hevc: rename hevc.[ch] to hevcdec.[ch]
authorAnton Khirnov <anton@khirnov.net>
Sun, 21 Aug 2016 15:14:24 +0000 (17:14 +0200)
committerAnton Khirnov <anton@khirnov.net>
Sun, 16 Oct 2016 18:26:17 +0000 (20:26 +0200)
This is more consistent with the rest of libav and frees up the hevc.h
name for decoder-independent shared declarations.

24 files changed:
libavcodec/Makefile
libavcodec/dxva2_hevc.c
libavcodec/hevc.c [deleted file]
libavcodec/hevc.h [deleted file]
libavcodec/hevc_cabac.c
libavcodec/hevc_data.c
libavcodec/hevc_filter.c
libavcodec/hevc_mp4toannexb_bsf.c
libavcodec/hevc_mvs.c
libavcodec/hevc_parser.c
libavcodec/hevc_ps.c
libavcodec/hevc_ps_enc.c
libavcodec/hevc_refs.c
libavcodec/hevc_sei.c
libavcodec/hevcdec.c [new file with mode: 0644]
libavcodec/hevcdec.h [new file with mode: 0644]
libavcodec/hevcdsp_template.c
libavcodec/hevcpred.c
libavcodec/hevcpred_template.c
libavcodec/qsvenc_hevc.c
libavcodec/vaapi_encode_h265.c
libavcodec/vdpau_hevc.c
libavformat/hevc.c
libavformat/hevcdec.c

index bec461b..d4579f9 100644 (file)
@@ -264,7 +264,7 @@ OBJS-$(CONFIG_H264_QSV_ENCODER)        += qsvenc_h264.o
 OBJS-$(CONFIG_H264_VAAPI_ENCODER)      += vaapi_encode_h264.o vaapi_encode_h26x.o
 OBJS-$(CONFIG_HAP_DECODER)             += hapdec.o hap.o
 OBJS-$(CONFIG_HAP_ENCODER)             += hapenc.o hap.o
-OBJS-$(CONFIG_HEVC_DECODER)            += hevc.o hevc_mvs.o hevc_ps.o hevc_sei.o \
+OBJS-$(CONFIG_HEVC_DECODER)            += hevcdec.o hevc_mvs.o hevc_ps.o hevc_sei.o \
                                           hevc_cabac.o hevc_refs.o hevcpred.o    \
                                           hevcdsp.o hevc_filter.o h2645_parse.o hevc_data.o
 OBJS-$(CONFIG_HEVC_NVENC_ENCODER)      += nvenc_hevc.o
index 5bb10d6..53fd638 100644 (file)
@@ -22,7 +22,7 @@
 
 #include "libavutil/avassert.h"
 
-#include "hevc.h"
+#include "hevcdec.h"
 
 // The headers above may include w32threads.h, which uses the original
 // _WIN32_WINNT define, while dxva2_internal.h redefines it to target a
diff --git a/libavcodec/hevc.c b/libavcodec/hevc.c
deleted file mode 100644 (file)
index e38d367..0000000
+++ /dev/null
@@ -1,3077 +0,0 @@
-/*
- * HEVC video decoder
- *
- * Copyright (C) 2012 - 2013 Guillaume Martres
- * Copyright (C) 2012 - 2013 Mickael Raulet
- * Copyright (C) 2012 - 2013 Gildas Cocherel
- * Copyright (C) 2012 - 2013 Wassim Hamidouche
- *
- * This file is part of Libav.
- *
- * Libav is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * Libav is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with Libav; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#include "libavutil/attributes.h"
-#include "libavutil/common.h"
-#include "libavutil/display.h"
-#include "libavutil/internal.h"
-#include "libavutil/md5.h"
-#include "libavutil/opt.h"
-#include "libavutil/pixdesc.h"
-#include "libavutil/stereo3d.h"
-
-#include "bswapdsp.h"
-#include "bytestream.h"
-#include "cabac_functions.h"
-#include "golomb.h"
-#include "hevc.h"
-#include "profiles.h"
-
-const uint8_t ff_hevc_qpel_extra_before[4] = { 0, 3, 3, 3 };
-const uint8_t ff_hevc_qpel_extra_after[4]  = { 0, 4, 4, 4 };
-const uint8_t ff_hevc_qpel_extra[4]        = { 0, 7, 7, 7 };
-
-static const uint8_t scan_1x1[1] = { 0 };
-
-static const uint8_t horiz_scan2x2_x[4] = { 0, 1, 0, 1 };
-
-static const uint8_t horiz_scan2x2_y[4] = { 0, 0, 1, 1 };
-
-static const uint8_t horiz_scan4x4_x[16] = {
-    0, 1, 2, 3,
-    0, 1, 2, 3,
-    0, 1, 2, 3,
-    0, 1, 2, 3,
-};
-
-static const uint8_t horiz_scan4x4_y[16] = {
-    0, 0, 0, 0,
-    1, 1, 1, 1,
-    2, 2, 2, 2,
-    3, 3, 3, 3,
-};
-
-static const uint8_t horiz_scan8x8_inv[8][8] = {
-    {  0,  1,  2,  3, 16, 17, 18, 19, },
-    {  4,  5,  6,  7, 20, 21, 22, 23, },
-    {  8,  9, 10, 11, 24, 25, 26, 27, },
-    { 12, 13, 14, 15, 28, 29, 30, 31, },
-    { 32, 33, 34, 35, 48, 49, 50, 51, },
-    { 36, 37, 38, 39, 52, 53, 54, 55, },
-    { 40, 41, 42, 43, 56, 57, 58, 59, },
-    { 44, 45, 46, 47, 60, 61, 62, 63, },
-};
-
-static const uint8_t diag_scan2x2_x[4] = { 0, 0, 1, 1 };
-
-static const uint8_t diag_scan2x2_y[4] = { 0, 1, 0, 1 };
-
-static const uint8_t diag_scan2x2_inv[2][2] = {
-    { 0, 2, },
-    { 1, 3, },
-};
-
-static const uint8_t diag_scan4x4_inv[4][4] = {
-    { 0,  2,  5,  9, },
-    { 1,  4,  8, 12, },
-    { 3,  7, 11, 14, },
-    { 6, 10, 13, 15, },
-};
-
-static const uint8_t diag_scan8x8_inv[8][8] = {
-    {  0,  2,  5,  9, 14, 20, 27, 35, },
-    {  1,  4,  8, 13, 19, 26, 34, 42, },
-    {  3,  7, 12, 18, 25, 33, 41, 48, },
-    {  6, 11, 17, 24, 32, 40, 47, 53, },
-    { 10, 16, 23, 31, 39, 46, 52, 57, },
-    { 15, 22, 30, 38, 45, 51, 56, 60, },
-    { 21, 29, 37, 44, 50, 55, 59, 62, },
-    { 28, 36, 43, 49, 54, 58, 61, 63, },
-};
-
-/**
- * NOTE: Each function hls_foo correspond to the function foo in the
- * specification (HLS stands for High Level Syntax).
- */
-
-/**
- * Section 5.7
- */
-
-/* free everything allocated  by pic_arrays_init() */
-static void pic_arrays_free(HEVCContext *s)
-{
-    av_freep(&s->sao);
-    av_freep(&s->deblock);
-
-    av_freep(&s->skip_flag);
-    av_freep(&s->tab_ct_depth);
-
-    av_freep(&s->tab_ipm);
-    av_freep(&s->cbf_luma);
-    av_freep(&s->is_pcm);
-
-    av_freep(&s->qp_y_tab);
-    av_freep(&s->tab_slice_address);
-    av_freep(&s->filter_slice_edges);
-
-    av_freep(&s->horizontal_bs);
-    av_freep(&s->vertical_bs);
-
-    av_buffer_pool_uninit(&s->tab_mvf_pool);
-    av_buffer_pool_uninit(&s->rpl_tab_pool);
-}
-
-/* allocate arrays that depend on frame dimensions */
-static int pic_arrays_init(HEVCContext *s, const HEVCSPS *sps)
-{
-    int log2_min_cb_size = sps->log2_min_cb_size;
-    int width            = sps->width;
-    int height           = sps->height;
-    int pic_size_in_ctb  = ((width  >> log2_min_cb_size) + 1) *
-                           ((height >> log2_min_cb_size) + 1);
-    int ctb_count        = sps->ctb_width * sps->ctb_height;
-    int min_pu_size      = sps->min_pu_width * sps->min_pu_height;
-
-    s->bs_width  = width  >> 3;
-    s->bs_height = height >> 3;
-
-    s->sao           = av_mallocz_array(ctb_count, sizeof(*s->sao));
-    s->deblock       = av_mallocz_array(ctb_count, sizeof(*s->deblock));
-    if (!s->sao || !s->deblock)
-        goto fail;
-
-    s->skip_flag    = av_malloc(pic_size_in_ctb);
-    s->tab_ct_depth = av_malloc(sps->min_cb_height * sps->min_cb_width);
-    if (!s->skip_flag || !s->tab_ct_depth)
-        goto fail;
-
-    s->cbf_luma = av_malloc(sps->min_tb_width * sps->min_tb_height);
-    s->tab_ipm  = av_mallocz(min_pu_size);
-    s->is_pcm   = av_malloc(min_pu_size);
-    if (!s->tab_ipm || !s->cbf_luma || !s->is_pcm)
-        goto fail;
-
-    s->filter_slice_edges = av_malloc(ctb_count);
-    s->tab_slice_address  = av_malloc(pic_size_in_ctb *
-                                      sizeof(*s->tab_slice_address));
-    s->qp_y_tab           = av_malloc(pic_size_in_ctb *
-                                      sizeof(*s->qp_y_tab));
-    if (!s->qp_y_tab || !s->filter_slice_edges || !s->tab_slice_address)
-        goto fail;
-
-    s->horizontal_bs = av_mallocz(2 * s->bs_width * (s->bs_height + 1));
-    s->vertical_bs   = av_mallocz(2 * s->bs_width * (s->bs_height + 1));
-    if (!s->horizontal_bs || !s->vertical_bs)
-        goto fail;
-
-    s->tab_mvf_pool = av_buffer_pool_init(min_pu_size * sizeof(MvField),
-                                          av_buffer_alloc);
-    s->rpl_tab_pool = av_buffer_pool_init(ctb_count * sizeof(RefPicListTab),
-                                          av_buffer_allocz);
-    if (!s->tab_mvf_pool || !s->rpl_tab_pool)
-        goto fail;
-
-    return 0;
-
-fail:
-    pic_arrays_free(s);
-    return AVERROR(ENOMEM);
-}
-
-static void pred_weight_table(HEVCContext *s, GetBitContext *gb)
-{
-    int i = 0;
-    int j = 0;
-    uint8_t luma_weight_l0_flag[16];
-    uint8_t chroma_weight_l0_flag[16];
-    uint8_t luma_weight_l1_flag[16];
-    uint8_t chroma_weight_l1_flag[16];
-
-    s->sh.luma_log2_weight_denom = av_clip(get_ue_golomb_long(gb), 0, 7);
-    if (s->ps.sps->chroma_format_idc != 0) {
-        int delta = get_se_golomb(gb);
-        s->sh.chroma_log2_weight_denom = av_clip(s->sh.luma_log2_weight_denom + delta, 0, 7);
-    }
-
-    for (i = 0; i < s->sh.nb_refs[L0]; i++) {
-        luma_weight_l0_flag[i] = get_bits1(gb);
-        if (!luma_weight_l0_flag[i]) {
-            s->sh.luma_weight_l0[i] = 1 << s->sh.luma_log2_weight_denom;
-            s->sh.luma_offset_l0[i] = 0;
-        }
-    }
-    if (s->ps.sps->chroma_format_idc != 0) { // FIXME: invert "if" and "for"
-        for (i = 0; i < s->sh.nb_refs[L0]; i++)
-            chroma_weight_l0_flag[i] = get_bits1(gb);
-    } else {
-        for (i = 0; i < s->sh.nb_refs[L0]; i++)
-            chroma_weight_l0_flag[i] = 0;
-    }
-    for (i = 0; i < s->sh.nb_refs[L0]; i++) {
-        if (luma_weight_l0_flag[i]) {
-            int delta_luma_weight_l0 = get_se_golomb(gb);
-            s->sh.luma_weight_l0[i] = (1 << s->sh.luma_log2_weight_denom) + delta_luma_weight_l0;
-            s->sh.luma_offset_l0[i] = get_se_golomb(gb);
-        }
-        if (chroma_weight_l0_flag[i]) {
-            for (j = 0; j < 2; j++) {
-                int delta_chroma_weight_l0 = get_se_golomb(gb);
-                int delta_chroma_offset_l0 = get_se_golomb(gb);
-                s->sh.chroma_weight_l0[i][j] = (1 << s->sh.chroma_log2_weight_denom) + delta_chroma_weight_l0;
-                s->sh.chroma_offset_l0[i][j] = av_clip((delta_chroma_offset_l0 - ((128 * s->sh.chroma_weight_l0[i][j])
-                                                                                    >> s->sh.chroma_log2_weight_denom) + 128), -128, 127);
-            }
-        } else {
-            s->sh.chroma_weight_l0[i][0] = 1 << s->sh.chroma_log2_weight_denom;
-            s->sh.chroma_offset_l0[i][0] = 0;
-            s->sh.chroma_weight_l0[i][1] = 1 << s->sh.chroma_log2_weight_denom;
-            s->sh.chroma_offset_l0[i][1] = 0;
-        }
-    }
-    if (s->sh.slice_type == B_SLICE) {
-        for (i = 0; i < s->sh.nb_refs[L1]; i++) {
-            luma_weight_l1_flag[i] = get_bits1(gb);
-            if (!luma_weight_l1_flag[i]) {
-                s->sh.luma_weight_l1[i] = 1 << s->sh.luma_log2_weight_denom;
-                s->sh.luma_offset_l1[i] = 0;
-            }
-        }
-        if (s->ps.sps->chroma_format_idc != 0) {
-            for (i = 0; i < s->sh.nb_refs[L1]; i++)
-                chroma_weight_l1_flag[i] = get_bits1(gb);
-        } else {
-            for (i = 0; i < s->sh.nb_refs[L1]; i++)
-                chroma_weight_l1_flag[i] = 0;
-        }
-        for (i = 0; i < s->sh.nb_refs[L1]; i++) {
-            if (luma_weight_l1_flag[i]) {
-                int delta_luma_weight_l1 = get_se_golomb(gb);
-                s->sh.luma_weight_l1[i] = (1 << s->sh.luma_log2_weight_denom) + delta_luma_weight_l1;
-                s->sh.luma_offset_l1[i] = get_se_golomb(gb);
-            }
-            if (chroma_weight_l1_flag[i]) {
-                for (j = 0; j < 2; j++) {
-                    int delta_chroma_weight_l1 = get_se_golomb(gb);
-                    int delta_chroma_offset_l1 = get_se_golomb(gb);
-                    s->sh.chroma_weight_l1[i][j] = (1 << s->sh.chroma_log2_weight_denom) + delta_chroma_weight_l1;
-                    s->sh.chroma_offset_l1[i][j] = av_clip((delta_chroma_offset_l1 - ((128 * s->sh.chroma_weight_l1[i][j])
-                                                                                        >> s->sh.chroma_log2_weight_denom) + 128), -128, 127);
-                }
-            } else {
-                s->sh.chroma_weight_l1[i][0] = 1 << s->sh.chroma_log2_weight_denom;
-                s->sh.chroma_offset_l1[i][0] = 0;
-                s->sh.chroma_weight_l1[i][1] = 1 << s->sh.chroma_log2_weight_denom;
-                s->sh.chroma_offset_l1[i][1] = 0;
-            }
-        }
-    }
-}
-
-static int decode_lt_rps(HEVCContext *s, LongTermRPS *rps, GetBitContext *gb)
-{
-    const HEVCSPS *sps = s->ps.sps;
-    int max_poc_lsb    = 1 << sps->log2_max_poc_lsb;
-    int prev_delta_msb = 0;
-    unsigned int nb_sps = 0, nb_sh;
-    int i;
-
-    rps->nb_refs = 0;
-    if (!sps->long_term_ref_pics_present_flag)
-        return 0;
-
-    if (sps->num_long_term_ref_pics_sps > 0)
-        nb_sps = get_ue_golomb_long(gb);
-    nb_sh = get_ue_golomb_long(gb);
-
-    if (nb_sh + nb_sps > FF_ARRAY_ELEMS(rps->poc))
-        return AVERROR_INVALIDDATA;
-
-    rps->nb_refs = nb_sh + nb_sps;
-
-    for (i = 0; i < rps->nb_refs; i++) {
-        uint8_t delta_poc_msb_present;
-
-        if (i < nb_sps) {
-            uint8_t lt_idx_sps = 0;
-
-            if (sps->num_long_term_ref_pics_sps > 1)
-                lt_idx_sps = get_bits(gb, av_ceil_log2(sps->num_long_term_ref_pics_sps));
-
-            rps->poc[i]  = sps->lt_ref_pic_poc_lsb_sps[lt_idx_sps];
-            rps->used[i] = sps->used_by_curr_pic_lt_sps_flag[lt_idx_sps];
-        } else {
-            rps->poc[i]  = get_bits(gb, sps->log2_max_poc_lsb);
-            rps->used[i] = get_bits1(gb);
-        }
-
-        delta_poc_msb_present = get_bits1(gb);
-        if (delta_poc_msb_present) {
-            int delta = get_ue_golomb_long(gb);
-
-            if (i && i != nb_sps)
-                delta += prev_delta_msb;
-
-            rps->poc[i] += s->poc - delta * max_poc_lsb - s->sh.pic_order_cnt_lsb;
-            prev_delta_msb = delta;
-        }
-    }
-
-    return 0;
-}
-
-static void export_stream_params(AVCodecContext *avctx, const HEVCParamSets *ps,
-                                 const HEVCSPS *sps)
-{
-    const HEVCVPS *vps = (const HEVCVPS*)ps->vps_list[sps->vps_id]->data;
-    unsigned int num = 0, den = 0;
-
-    avctx->pix_fmt             = sps->pix_fmt;
-    avctx->coded_width         = sps->width;
-    avctx->coded_height        = sps->height;
-    avctx->width               = sps->output_width;
-    avctx->height              = sps->output_height;
-    avctx->has_b_frames        = sps->temporal_layer[sps->max_sub_layers - 1].num_reorder_pics;
-    avctx->profile             = sps->ptl.general_ptl.profile_idc;
-    avctx->level               = sps->ptl.general_ptl.level_idc;
-
-    ff_set_sar(avctx, sps->vui.sar);
-
-    if (sps->vui.video_signal_type_present_flag)
-        avctx->color_range = sps->vui.video_full_range_flag ? AVCOL_RANGE_JPEG
-                                                            : AVCOL_RANGE_MPEG;
-    else
-        avctx->color_range = AVCOL_RANGE_MPEG;
-
-    if (sps->vui.colour_description_present_flag) {
-        avctx->color_primaries = sps->vui.colour_primaries;
-        avctx->color_trc       = sps->vui.transfer_characteristic;
-        avctx->colorspace      = sps->vui.matrix_coeffs;
-    } else {
-        avctx->color_primaries = AVCOL_PRI_UNSPECIFIED;
-        avctx->color_trc       = AVCOL_TRC_UNSPECIFIED;
-        avctx->colorspace      = AVCOL_SPC_UNSPECIFIED;
-    }
-
-    if (vps->vps_timing_info_present_flag) {
-        num = vps->vps_num_units_in_tick;
-        den = vps->vps_time_scale;
-    } else if (sps->vui.vui_timing_info_present_flag) {
-        num = sps->vui.vui_num_units_in_tick;
-        den = sps->vui.vui_time_scale;
-    }
-
-    if (num != 0 && den != 0)
-        av_reduce(&avctx->framerate.den, &avctx->framerate.num,
-                  num, den, 1 << 30);
-}
-
-static int set_sps(HEVCContext *s, const HEVCSPS *sps)
-{
-    #define HWACCEL_MAX (CONFIG_HEVC_DXVA2_HWACCEL + CONFIG_HEVC_D3D11VA_HWACCEL + CONFIG_HEVC_VDPAU_HWACCEL)
-    enum AVPixelFormat pix_fmts[HWACCEL_MAX + 2], *fmt = pix_fmts;
-    int ret;
-
-    pic_arrays_free(s);
-    s->ps.sps = NULL;
-    s->ps.vps = NULL;
-
-    if (!sps)
-        return 0;
-
-    ret = pic_arrays_init(s, sps);
-    if (ret < 0)
-        goto fail;
-
-    export_stream_params(s->avctx, &s->ps, sps);
-
-    if (sps->pix_fmt == AV_PIX_FMT_YUV420P || sps->pix_fmt == AV_PIX_FMT_YUVJ420P ||
-        sps->pix_fmt == AV_PIX_FMT_YUV420P10) {
-#if CONFIG_HEVC_DXVA2_HWACCEL
-        *fmt++ = AV_PIX_FMT_DXVA2_VLD;
-#endif
-    }
-    if (sps->pix_fmt == AV_PIX_FMT_YUV420P || sps->pix_fmt == AV_PIX_FMT_YUVJ420P) {
-#if CONFIG_HEVC_D3D11VA_HWACCEL
-        *fmt++ = AV_PIX_FMT_D3D11VA_VLD;
-#endif
-#if CONFIG_HEVC_VDPAU_HWACCEL
-        *fmt++ = AV_PIX_FMT_VDPAU;
-#endif
-    }
-
-    *fmt++ = sps->pix_fmt;
-    *fmt = AV_PIX_FMT_NONE;
-
-    ret = ff_get_format(s->avctx, pix_fmts);
-    if (ret < 0)
-        goto fail;
-    s->avctx->pix_fmt = ret;
-
-    ff_hevc_pred_init(&s->hpc,     sps->bit_depth);
-    ff_hevc_dsp_init (&s->hevcdsp, sps->bit_depth);
-    ff_videodsp_init (&s->vdsp,    sps->bit_depth);
-
-    if (sps->sao_enabled && !s->avctx->hwaccel) {
-        av_frame_unref(s->tmp_frame);
-        ret = ff_get_buffer(s->avctx, s->tmp_frame, AV_GET_BUFFER_FLAG_REF);
-        if (ret < 0)
-            goto fail;
-        s->frame = s->tmp_frame;
-    }
-
-    s->ps.sps = sps;
-    s->ps.vps = (HEVCVPS*) s->ps.vps_list[s->ps.sps->vps_id]->data;
-
-    return 0;
-
-fail:
-    pic_arrays_free(s);
-    s->ps.sps = NULL;
-    return ret;
-}
-
-static int hls_slice_header(HEVCContext *s)
-{
-    GetBitContext *gb = &s->HEVClc.gb;
-    SliceHeader *sh   = &s->sh;
-    int i, ret;
-
-    // Coded parameters
-    sh->first_slice_in_pic_flag = get_bits1(gb);
-    if ((IS_IDR(s) || IS_BLA(s)) && sh->first_slice_in_pic_flag) {
-        s->seq_decode = (s->seq_decode + 1) & 0xff;
-        s->max_ra     = INT_MAX;
-        if (IS_IDR(s))
-            ff_hevc_clear_refs(s);
-    }
-    if (IS_IRAP(s))
-        sh->no_output_of_prior_pics_flag = get_bits1(gb);
-
-    sh->pps_id = get_ue_golomb_long(gb);
-    if (sh->pps_id >= MAX_PPS_COUNT || !s->ps.pps_list[sh->pps_id]) {
-        av_log(s->avctx, AV_LOG_ERROR, "PPS id out of range: %d\n", sh->pps_id);
-        return AVERROR_INVALIDDATA;
-    }
-    if (!sh->first_slice_in_pic_flag &&
-        s->ps.pps != (HEVCPPS*)s->ps.pps_list[sh->pps_id]->data) {
-        av_log(s->avctx, AV_LOG_ERROR, "PPS changed between slices.\n");
-        return AVERROR_INVALIDDATA;
-    }
-    s->ps.pps = (HEVCPPS*)s->ps.pps_list[sh->pps_id]->data;
-
-    if (s->ps.sps != (HEVCSPS*)s->ps.sps_list[s->ps.pps->sps_id]->data) {
-        s->ps.sps = (HEVCSPS*)s->ps.sps_list[s->ps.pps->sps_id]->data;
-
-        ff_hevc_clear_refs(s);
-        ret = set_sps(s, s->ps.sps);
-        if (ret < 0)
-            return ret;
-
-        s->seq_decode = (s->seq_decode + 1) & 0xff;
-        s->max_ra     = INT_MAX;
-    }
-
-    sh->dependent_slice_segment_flag = 0;
-    if (!sh->first_slice_in_pic_flag) {
-        int slice_address_length;
-
-        if (s->ps.pps->dependent_slice_segments_enabled_flag)
-            sh->dependent_slice_segment_flag = get_bits1(gb);
-
-        slice_address_length = av_ceil_log2(s->ps.sps->ctb_width *
-                                            s->ps.sps->ctb_height);
-        sh->slice_segment_addr = slice_address_length ? get_bits(gb, slice_address_length) : 0;
-        if (sh->slice_segment_addr >= s->ps.sps->ctb_width * s->ps.sps->ctb_height) {
-            av_log(s->avctx, AV_LOG_ERROR,
-                   "Invalid slice segment address: %u.\n",
-                   sh->slice_segment_addr);
-            return AVERROR_INVALIDDATA;
-        }
-
-        if (!sh->dependent_slice_segment_flag) {
-            sh->slice_addr = sh->slice_segment_addr;
-            s->slice_idx++;
-        }
-    } else {
-        sh->slice_segment_addr = sh->slice_addr = 0;
-        s->slice_idx           = 0;
-        s->slice_initialized   = 0;
-    }
-
-    if (!sh->dependent_slice_segment_flag) {
-        s->slice_initialized = 0;
-
-        for (i = 0; i < s->ps.pps->num_extra_slice_header_bits; i++)
-            skip_bits(gb, 1);  // slice_reserved_undetermined_flag[]
-
-        sh->slice_type = get_ue_golomb_long(gb);
-        if (!(sh->slice_type == I_SLICE ||
-              sh->slice_type == P_SLICE ||
-              sh->slice_type == B_SLICE)) {
-            av_log(s->avctx, AV_LOG_ERROR, "Unknown slice type: %d.\n",
-                   sh->slice_type);
-            return AVERROR_INVALIDDATA;
-        }
-        if (IS_IRAP(s) && sh->slice_type != I_SLICE) {
-            av_log(s->avctx, AV_LOG_ERROR, "Inter slices in an IRAP frame.\n");
-            return AVERROR_INVALIDDATA;
-        }
-
-        // when flag is not present, picture is inferred to be output
-        sh->pic_output_flag = 1;
-        if (s->ps.pps->output_flag_present_flag)
-            sh->pic_output_flag = get_bits1(gb);
-
-        if (s->ps.sps->separate_colour_plane_flag)
-            sh->colour_plane_id = get_bits(gb, 2);
-
-        if (!IS_IDR(s)) {
-            int poc, pos;
-
-            sh->pic_order_cnt_lsb = get_bits(gb, s->ps.sps->log2_max_poc_lsb);
-            poc = ff_hevc_compute_poc(s, sh->pic_order_cnt_lsb);
-            if (!sh->first_slice_in_pic_flag && poc != s->poc) {
-                av_log(s->avctx, AV_LOG_WARNING,
-                       "Ignoring POC change between slices: %d -> %d\n", s->poc, poc);
-                if (s->avctx->err_recognition & AV_EF_EXPLODE)
-                    return AVERROR_INVALIDDATA;
-                poc = s->poc;
-            }
-            s->poc = poc;
-
-            sh->short_term_ref_pic_set_sps_flag = get_bits1(gb);
-            pos = get_bits_left(gb);
-            if (!sh->short_term_ref_pic_set_sps_flag) {
-                ret = ff_hevc_decode_short_term_rps(gb, s->avctx, &sh->slice_rps, s->ps.sps, 1);
-                if (ret < 0)
-                    return ret;
-
-                sh->short_term_rps = &sh->slice_rps;
-            } else {
-                int numbits, rps_idx;
-
-                if (!s->ps.sps->nb_st_rps) {
-                    av_log(s->avctx, AV_LOG_ERROR, "No ref lists in the SPS.\n");
-                    return AVERROR_INVALIDDATA;
-                }
-
-                numbits = av_ceil_log2(s->ps.sps->nb_st_rps);
-                rps_idx = numbits > 0 ? get_bits(gb, numbits) : 0;
-                sh->short_term_rps = &s->ps.sps->st_rps[rps_idx];
-            }
-            sh->short_term_ref_pic_set_size = pos - get_bits_left(gb);
-
-            pos = get_bits_left(gb);
-            ret = decode_lt_rps(s, &sh->long_term_rps, gb);
-            if (ret < 0) {
-                av_log(s->avctx, AV_LOG_WARNING, "Invalid long term RPS.\n");
-                if (s->avctx->err_recognition & AV_EF_EXPLODE)
-                    return AVERROR_INVALIDDATA;
-            }
-            sh->long_term_ref_pic_set_size = pos - get_bits_left(gb);
-
-            if (s->ps.sps->sps_temporal_mvp_enabled_flag)
-                sh->slice_temporal_mvp_enabled_flag = get_bits1(gb);
-            else
-                sh->slice_temporal_mvp_enabled_flag = 0;
-        } else {
-            s->sh.short_term_rps = NULL;
-            s->poc               = 0;
-        }
-
-        /* 8.3.1 */
-        if (s->temporal_id == 0 &&
-            s->nal_unit_type != NAL_TRAIL_N &&
-            s->nal_unit_type != NAL_TSA_N   &&
-            s->nal_unit_type != NAL_STSA_N  &&
-            s->nal_unit_type != NAL_RADL_N  &&
-            s->nal_unit_type != NAL_RADL_R  &&
-            s->nal_unit_type != NAL_RASL_N  &&
-            s->nal_unit_type != NAL_RASL_R)
-            s->pocTid0 = s->poc;
-
-        if (s->ps.sps->sao_enabled) {
-            sh->slice_sample_adaptive_offset_flag[0] = get_bits1(gb);
-            sh->slice_sample_adaptive_offset_flag[1] =
-            sh->slice_sample_adaptive_offset_flag[2] = get_bits1(gb);
-        } else {
-            sh->slice_sample_adaptive_offset_flag[0] = 0;
-            sh->slice_sample_adaptive_offset_flag[1] = 0;
-            sh->slice_sample_adaptive_offset_flag[2] = 0;
-        }
-
-        sh->nb_refs[L0] = sh->nb_refs[L1] = 0;
-        if (sh->slice_type == P_SLICE || sh->slice_type == B_SLICE) {
-            int nb_refs;
-
-            sh->nb_refs[L0] = s->ps.pps->num_ref_idx_l0_default_active;
-            if (sh->slice_type == B_SLICE)
-                sh->nb_refs[L1] = s->ps.pps->num_ref_idx_l1_default_active;
-
-            if (get_bits1(gb)) { // num_ref_idx_active_override_flag
-                sh->nb_refs[L0] = get_ue_golomb_long(gb) + 1;
-                if (sh->slice_type == B_SLICE)
-                    sh->nb_refs[L1] = get_ue_golomb_long(gb) + 1;
-            }
-            if (sh->nb_refs[L0] > MAX_REFS || sh->nb_refs[L1] > MAX_REFS) {
-                av_log(s->avctx, AV_LOG_ERROR, "Too many refs: %d/%d.\n",
-                       sh->nb_refs[L0], sh->nb_refs[L1]);
-                return AVERROR_INVALIDDATA;
-            }
-
-            sh->rpl_modification_flag[0] = 0;
-            sh->rpl_modification_flag[1] = 0;
-            nb_refs = ff_hevc_frame_nb_refs(s);
-            if (!nb_refs) {
-                av_log(s->avctx, AV_LOG_ERROR, "Zero refs for a frame with P or B slices.\n");
-                return AVERROR_INVALIDDATA;
-            }
-
-            if (s->ps.pps->lists_modification_present_flag && nb_refs > 1) {
-                sh->rpl_modification_flag[0] = get_bits1(gb);
-                if (sh->rpl_modification_flag[0]) {
-                    for (i = 0; i < sh->nb_refs[L0]; i++)
-                        sh->list_entry_lx[0][i] = get_bits(gb, av_ceil_log2(nb_refs));
-                }
-
-                if (sh->slice_type == B_SLICE) {
-                    sh->rpl_modification_flag[1] = get_bits1(gb);
-                    if (sh->rpl_modification_flag[1] == 1)
-                        for (i = 0; i < sh->nb_refs[L1]; i++)
-                            sh->list_entry_lx[1][i] = get_bits(gb, av_ceil_log2(nb_refs));
-                }
-            }
-
-            if (sh->slice_type == B_SLICE)
-                sh->mvd_l1_zero_flag = get_bits1(gb);
-
-            if (s->ps.pps->cabac_init_present_flag)
-                sh->cabac_init_flag = get_bits1(gb);
-            else
-                sh->cabac_init_flag = 0;
-
-            sh->collocated_ref_idx = 0;
-            if (sh->slice_temporal_mvp_enabled_flag) {
-                sh->collocated_list = L0;
-                if (sh->slice_type == B_SLICE)
-                    sh->collocated_list = !get_bits1(gb);
-
-                if (sh->nb_refs[sh->collocated_list] > 1) {
-                    sh->collocated_ref_idx = get_ue_golomb_long(gb);
-                    if (sh->collocated_ref_idx >= sh->nb_refs[sh->collocated_list]) {
-                        av_log(s->avctx, AV_LOG_ERROR,
-                               "Invalid collocated_ref_idx: %d.\n",
-                               sh->collocated_ref_idx);
-                        return AVERROR_INVALIDDATA;
-                    }
-                }
-            }
-
-            if ((s->ps.pps->weighted_pred_flag   && sh->slice_type == P_SLICE) ||
-                (s->ps.pps->weighted_bipred_flag && sh->slice_type == B_SLICE)) {
-                pred_weight_table(s, gb);
-            }
-
-            sh->max_num_merge_cand = 5 - get_ue_golomb_long(gb);
-            if (sh->max_num_merge_cand < 1 || sh->max_num_merge_cand > 5) {
-                av_log(s->avctx, AV_LOG_ERROR,
-                       "Invalid number of merging MVP candidates: %d.\n",
-                       sh->max_num_merge_cand);
-                return AVERROR_INVALIDDATA;
-            }
-        }
-
-        sh->slice_qp_delta = get_se_golomb(gb);
-
-        if (s->ps.pps->pic_slice_level_chroma_qp_offsets_present_flag) {
-            sh->slice_cb_qp_offset = get_se_golomb(gb);
-            sh->slice_cr_qp_offset = get_se_golomb(gb);
-        } else {
-            sh->slice_cb_qp_offset = 0;
-            sh->slice_cr_qp_offset = 0;
-        }
-
-        if (s->ps.pps->deblocking_filter_control_present_flag) {
-            int deblocking_filter_override_flag = 0;
-
-            if (s->ps.pps->deblocking_filter_override_enabled_flag)
-                deblocking_filter_override_flag = get_bits1(gb);
-
-            if (deblocking_filter_override_flag) {
-                sh->disable_deblocking_filter_flag = get_bits1(gb);
-                if (!sh->disable_deblocking_filter_flag) {
-                    sh->beta_offset = get_se_golomb(gb) * 2;
-                    sh->tc_offset   = get_se_golomb(gb) * 2;
-                }
-            } else {
-                sh->disable_deblocking_filter_flag = s->ps.pps->disable_dbf;
-                sh->beta_offset                    = s->ps.pps->beta_offset;
-                sh->tc_offset                      = s->ps.pps->tc_offset;
-            }
-        } else {
-            sh->disable_deblocking_filter_flag = 0;
-            sh->beta_offset                    = 0;
-            sh->tc_offset                      = 0;
-        }
-
-        if (s->ps.pps->seq_loop_filter_across_slices_enabled_flag &&
-            (sh->slice_sample_adaptive_offset_flag[0] ||
-             sh->slice_sample_adaptive_offset_flag[1] ||
-             !sh->disable_deblocking_filter_flag)) {
-            sh->slice_loop_filter_across_slices_enabled_flag = get_bits1(gb);
-        } else {
-            sh->slice_loop_filter_across_slices_enabled_flag = s->ps.pps->seq_loop_filter_across_slices_enabled_flag;
-        }
-    } else if (!s->slice_initialized) {
-        av_log(s->avctx, AV_LOG_ERROR, "Independent slice segment missing.\n");
-        return AVERROR_INVALIDDATA;
-    }
-
-    sh->num_entry_point_offsets = 0;
-    if (s->ps.pps->tiles_enabled_flag || s->ps.pps->entropy_coding_sync_enabled_flag) {
-        sh->num_entry_point_offsets = get_ue_golomb_long(gb);
-        if (sh->num_entry_point_offsets > 0) {
-            int offset_len = get_ue_golomb_long(gb) + 1;
-
-            for (i = 0; i < sh->num_entry_point_offsets; i++)
-                skip_bits(gb, offset_len);
-        }
-    }
-
-    if (s->ps.pps->slice_header_extension_present_flag) {
-        unsigned int length = get_ue_golomb_long(gb);
-        for (i = 0; i < length; i++)
-            skip_bits(gb, 8);  // slice_header_extension_data_byte
-    }
-
-    // Inferred parameters
-    sh->slice_qp = 26 + s->ps.pps->pic_init_qp_minus26 + sh->slice_qp_delta;
-    if (sh->slice_qp > 51 ||
-        sh->slice_qp < -s->ps.sps->qp_bd_offset) {
-        av_log(s->avctx, AV_LOG_ERROR,
-               "The slice_qp %d is outside the valid range "
-               "[%d, 51].\n",
-               sh->slice_qp,
-               -s->ps.sps->qp_bd_offset);
-        return AVERROR_INVALIDDATA;
-    }
-
-    sh->slice_ctb_addr_rs = sh->slice_segment_addr;
-
-    if (!s->sh.slice_ctb_addr_rs && s->sh.dependent_slice_segment_flag) {
-        av_log(s->avctx, AV_LOG_ERROR, "Impossible slice segment.\n");
-        return AVERROR_INVALIDDATA;
-    }
-
-    s->HEVClc.first_qp_group = !s->sh.dependent_slice_segment_flag;
-
-    if (!s->ps.pps->cu_qp_delta_enabled_flag)
-        s->HEVClc.qp_y = FFUMOD(s->sh.slice_qp + 52 + 2 * s->ps.sps->qp_bd_offset,
-                                52 + s->ps.sps->qp_bd_offset) - s->ps.sps->qp_bd_offset;
-
-    s->slice_initialized = 1;
-
-    return 0;
-}
-
-#define CTB(tab, x, y) ((tab)[(y) * s->ps.sps->ctb_width + (x)])
-
-#define SET_SAO(elem, value)                            \
-do {                                                    \
-    if (!sao_merge_up_flag && !sao_merge_left_flag)     \
-        sao->elem = value;                              \
-    else if (sao_merge_left_flag)                       \
-        sao->elem = CTB(s->sao, rx-1, ry).elem;         \
-    else if (sao_merge_up_flag)                         \
-        sao->elem = CTB(s->sao, rx, ry-1).elem;         \
-    else                                                \
-        sao->elem = 0;                                  \
-} while (0)
-
-static void hls_sao_param(HEVCContext *s, int rx, int ry)
-{
-    HEVCLocalContext *lc    = &s->HEVClc;
-    int sao_merge_left_flag = 0;
-    int sao_merge_up_flag   = 0;
-    int shift               = s->ps.sps->bit_depth - FFMIN(s->ps.sps->bit_depth, 10);
-    SAOParams *sao          = &CTB(s->sao, rx, ry);
-    int c_idx, i;
-
-    if (s->sh.slice_sample_adaptive_offset_flag[0] ||
-        s->sh.slice_sample_adaptive_offset_flag[1]) {
-        if (rx > 0) {
-            if (lc->ctb_left_flag)
-                sao_merge_left_flag = ff_hevc_sao_merge_flag_decode(s);
-        }
-        if (ry > 0 && !sao_merge_left_flag) {
-            if (lc->ctb_up_flag)
-                sao_merge_up_flag = ff_hevc_sao_merge_flag_decode(s);
-        }
-    }
-
-    for (c_idx = 0; c_idx < 3; c_idx++) {
-        if (!s->sh.slice_sample_adaptive_offset_flag[c_idx]) {
-            sao->type_idx[c_idx] = SAO_NOT_APPLIED;
-            continue;
-        }
-
-        if (c_idx == 2) {
-            sao->type_idx[2] = sao->type_idx[1];
-            sao->eo_class[2] = sao->eo_class[1];
-        } else {
-            SET_SAO(type_idx[c_idx], ff_hevc_sao_type_idx_decode(s));
-        }
-
-        if (sao->type_idx[c_idx] == SAO_NOT_APPLIED)
-            continue;
-
-        for (i = 0; i < 4; i++)
-            SET_SAO(offset_abs[c_idx][i], ff_hevc_sao_offset_abs_decode(s));
-
-        if (sao->type_idx[c_idx] == SAO_BAND) {
-            for (i = 0; i < 4; i++) {
-                if (sao->offset_abs[c_idx][i]) {
-                    SET_SAO(offset_sign[c_idx][i],
-                            ff_hevc_sao_offset_sign_decode(s));
-                } else {
-                    sao->offset_sign[c_idx][i] = 0;
-                }
-            }
-            SET_SAO(band_position[c_idx], ff_hevc_sao_band_position_decode(s));
-        } else if (c_idx != 2) {
-            SET_SAO(eo_class[c_idx], ff_hevc_sao_eo_class_decode(s));
-        }
-
-        // Inferred parameters
-        sao->offset_val[c_idx][0] = 0;
-        for (i = 0; i < 4; i++) {
-            sao->offset_val[c_idx][i + 1] = sao->offset_abs[c_idx][i] << shift;
-            if (sao->type_idx[c_idx] == SAO_EDGE) {
-                if (i > 1)
-                    sao->offset_val[c_idx][i + 1] = -sao->offset_val[c_idx][i + 1];
-            } else if (sao->offset_sign[c_idx][i]) {
-                sao->offset_val[c_idx][i + 1] = -sao->offset_val[c_idx][i + 1];
-            }
-        }
-    }
-}
-
-#undef SET_SAO
-#undef CTB
-
-static void hls_residual_coding(HEVCContext *s, int x0, int y0,
-                                int log2_trafo_size, enum ScanType scan_idx,
-                                int c_idx)
-{
-#define GET_COORD(offset, n)                                    \
-    do {                                                        \
-        x_c = (scan_x_cg[offset >> 4] << 2) + scan_x_off[n];    \
-        y_c = (scan_y_cg[offset >> 4] << 2) + scan_y_off[n];    \
-    } while (0)
-    HEVCLocalContext *lc    = &s->HEVClc;
-    int transform_skip_flag = 0;
-
-    int last_significant_coeff_x, last_significant_coeff_y;
-    int last_scan_pos;
-    int n_end;
-    int num_coeff    = 0;
-    int greater1_ctx = 1;
-
-    int num_last_subset;
-    int x_cg_last_sig, y_cg_last_sig;
-
-    const uint8_t *scan_x_cg, *scan_y_cg, *scan_x_off, *scan_y_off;
-
-    ptrdiff_t stride = s->frame->linesize[c_idx];
-    int hshift       = s->ps.sps->hshift[c_idx];
-    int vshift       = s->ps.sps->vshift[c_idx];
-    uint8_t *dst     = &s->frame->data[c_idx][(y0 >> vshift) * stride +
-                                              ((x0 >> hshift) << s->ps.sps->pixel_shift)];
-    DECLARE_ALIGNED(32, int16_t, coeffs[MAX_TB_SIZE * MAX_TB_SIZE]) = { 0 };
-    DECLARE_ALIGNED(8, uint8_t, significant_coeff_group_flag[8][8]) = { { 0 } };
-
-    int trafo_size = 1 << log2_trafo_size;
-    int i, qp, shift, add, scale, scale_m;
-    static const uint8_t level_scale[] = { 40, 45, 51, 57, 64, 72 };
-    const uint8_t *scale_matrix;
-    uint8_t dc_scale;
-
-    // Derive QP for dequant
-    if (!lc->cu.cu_transquant_bypass_flag) {
-        static const int qp_c[] = {
-            29, 30, 31, 32, 33, 33, 34, 34, 35, 35, 36, 36, 37, 37
-        };
-
-        static const uint8_t rem6[51 + 2 * 6 + 1] = {
-            0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2,
-            3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5,
-            0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3,
-        };
-
-        static const uint8_t div6[51 + 2 * 6 + 1] = {
-            0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2,  3,  3,  3,
-            3, 3, 3, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 6, 6, 6,  6,  6,  6,
-            7, 7, 7, 7, 7, 7, 8, 8, 8, 8, 8, 8, 9, 9, 9, 9, 9, 9, 10, 10, 10, 10,
-        };
-        int qp_y = lc->qp_y;
-
-        if (c_idx == 0) {
-            qp = qp_y + s->ps.sps->qp_bd_offset;
-        } else {
-            int qp_i, offset;
-
-            if (c_idx == 1)
-                offset = s->ps.pps->cb_qp_offset + s->sh.slice_cb_qp_offset;
-            else
-                offset = s->ps.pps->cr_qp_offset + s->sh.slice_cr_qp_offset;
-
-            qp_i = av_clip(qp_y + offset, -s->ps.sps->qp_bd_offset, 57);
-            if (qp_i < 30)
-                qp = qp_i;
-            else if (qp_i > 43)
-                qp = qp_i - 6;
-            else
-                qp = qp_c[qp_i - 30];
-
-            qp += s->ps.sps->qp_bd_offset;
-        }
-
-        shift    = s->ps.sps->bit_depth + log2_trafo_size - 5;
-        add      = 1 << (shift - 1);
-        scale    = level_scale[rem6[qp]] << (div6[qp]);
-        scale_m  = 16; // default when no custom scaling lists.
-        dc_scale = 16;
-
-        if (s->ps.sps->scaling_list_enable_flag) {
-            const ScalingList *sl = s->ps.pps->scaling_list_data_present_flag ?
-                                    &s->ps.pps->scaling_list : &s->ps.sps->scaling_list;
-            int matrix_id = lc->cu.pred_mode != MODE_INTRA;
-
-            if (log2_trafo_size != 5)
-                matrix_id = 3 * matrix_id + c_idx;
-
-            scale_matrix = sl->sl[log2_trafo_size - 2][matrix_id];
-            if (log2_trafo_size >= 4)
-                dc_scale = sl->sl_dc[log2_trafo_size - 4][matrix_id];
-        }
-    }
-
-    if (s->ps.pps->transform_skip_enabled_flag &&
-        !lc->cu.cu_transquant_bypass_flag   &&
-        log2_trafo_size == 2) {
-        transform_skip_flag = ff_hevc_transform_skip_flag_decode(s, c_idx);
-    }
-
-    last_significant_coeff_x =
-        ff_hevc_last_significant_coeff_x_prefix_decode(s, c_idx, log2_trafo_size);
-    last_significant_coeff_y =
-        ff_hevc_last_significant_coeff_y_prefix_decode(s, c_idx, log2_trafo_size);
-
-    if (last_significant_coeff_x > 3) {
-        int suffix = ff_hevc_last_significant_coeff_suffix_decode(s, last_significant_coeff_x);
-        last_significant_coeff_x = (1 << ((last_significant_coeff_x >> 1) - 1)) *
-                                   (2 + (last_significant_coeff_x & 1)) +
-                                   suffix;
-    }
-
-    if (last_significant_coeff_y > 3) {
-        int suffix = ff_hevc_last_significant_coeff_suffix_decode(s, last_significant_coeff_y);
-        last_significant_coeff_y = (1 << ((last_significant_coeff_y >> 1) - 1)) *
-                                   (2 + (last_significant_coeff_y & 1)) +
-                                   suffix;
-    }
-
-    if (scan_idx == SCAN_VERT)
-        FFSWAP(int, last_significant_coeff_x, last_significant_coeff_y);
-
-    x_cg_last_sig = last_significant_coeff_x >> 2;
-    y_cg_last_sig = last_significant_coeff_y >> 2;
-
-    switch (scan_idx) {
-    case SCAN_DIAG: {
-        int last_x_c = last_significant_coeff_x & 3;
-        int last_y_c = last_significant_coeff_y & 3;
-
-        scan_x_off = ff_hevc_diag_scan4x4_x;
-        scan_y_off = ff_hevc_diag_scan4x4_y;
-        num_coeff  = diag_scan4x4_inv[last_y_c][last_x_c];
-        if (trafo_size == 4) {
-            scan_x_cg = scan_1x1;
-            scan_y_cg = scan_1x1;
-        } else if (trafo_size == 8) {
-            num_coeff += diag_scan2x2_inv[y_cg_last_sig][x_cg_last_sig] << 4;
-            scan_x_cg  = diag_scan2x2_x;
-            scan_y_cg  = diag_scan2x2_y;
-        } else if (trafo_size == 16) {
-            num_coeff += diag_scan4x4_inv[y_cg_last_sig][x_cg_last_sig] << 4;
-            scan_x_cg  = ff_hevc_diag_scan4x4_x;
-            scan_y_cg  = ff_hevc_diag_scan4x4_y;
-        } else { // trafo_size == 32
-            num_coeff += diag_scan8x8_inv[y_cg_last_sig][x_cg_last_sig] << 4;
-            scan_x_cg  = ff_hevc_diag_scan8x8_x;
-            scan_y_cg  = ff_hevc_diag_scan8x8_y;
-        }
-        break;
-    }
-    case SCAN_HORIZ:
-        scan_x_cg  = horiz_scan2x2_x;
-        scan_y_cg  = horiz_scan2x2_y;
-        scan_x_off = horiz_scan4x4_x;
-        scan_y_off = horiz_scan4x4_y;
-        num_coeff  = horiz_scan8x8_inv[last_significant_coeff_y][last_significant_coeff_x];
-        break;
-    default: //SCAN_VERT
-        scan_x_cg  = horiz_scan2x2_y;
-        scan_y_cg  = horiz_scan2x2_x;
-        scan_x_off = horiz_scan4x4_y;
-        scan_y_off = horiz_scan4x4_x;
-        num_coeff  = horiz_scan8x8_inv[last_significant_coeff_x][last_significant_coeff_y];
-        break;
-    }
-    num_coeff++;
-    num_last_subset = (num_coeff - 1) >> 4;
-
-    for (i = num_last_subset; i >= 0; i--) {
-        int n, m;
-        int x_cg, y_cg, x_c, y_c;
-        int implicit_non_zero_coeff = 0;
-        int64_t trans_coeff_level;
-        int prev_sig = 0;
-        int offset   = i << 4;
-
-        uint8_t significant_coeff_flag_idx[16];
-        uint8_t nb_significant_coeff_flag = 0;
-
-        x_cg = scan_x_cg[i];
-        y_cg = scan_y_cg[i];
-
-        if (i < num_last_subset && i > 0) {
-            int ctx_cg = 0;
-            if (x_cg < (1 << (log2_trafo_size - 2)) - 1)
-                ctx_cg += significant_coeff_group_flag[x_cg + 1][y_cg];
-            if (y_cg < (1 << (log2_trafo_size - 2)) - 1)
-                ctx_cg += significant_coeff_group_flag[x_cg][y_cg + 1];
-
-            significant_coeff_group_flag[x_cg][y_cg] =
-                ff_hevc_significant_coeff_group_flag_decode(s, c_idx, ctx_cg);
-            implicit_non_zero_coeff = 1;
-        } else {
-            significant_coeff_group_flag[x_cg][y_cg] =
-                ((x_cg == x_cg_last_sig && y_cg == y_cg_last_sig) ||
-                 (x_cg == 0 && y_cg == 0));
-        }
-
-        last_scan_pos = num_coeff - offset - 1;
-
-        if (i == num_last_subset) {
-            n_end                         = last_scan_pos - 1;
-            significant_coeff_flag_idx[0] = last_scan_pos;
-            nb_significant_coeff_flag     = 1;
-        } else {
-            n_end = 15;
-        }
-
-        if (x_cg < ((1 << log2_trafo_size) - 1) >> 2)
-            prev_sig = significant_coeff_group_flag[x_cg + 1][y_cg];
-        if (y_cg < ((1 << log2_trafo_size) - 1) >> 2)
-            prev_sig += significant_coeff_group_flag[x_cg][y_cg + 1] << 1;
-
-        for (n = n_end; n >= 0; n--) {
-            GET_COORD(offset, n);
-
-            if (significant_coeff_group_flag[x_cg][y_cg] &&
-                (n > 0 || implicit_non_zero_coeff == 0)) {
-                if (ff_hevc_significant_coeff_flag_decode(s, c_idx, x_c, y_c,
-                                                          log2_trafo_size,
-                                                          scan_idx,
-                                                          prev_sig) == 1) {
-                    significant_coeff_flag_idx[nb_significant_coeff_flag] = n;
-                    nb_significant_coeff_flag++;
-                    implicit_non_zero_coeff = 0;
-                }
-            } else {
-                int last_cg = (x_c == (x_cg << 2) && y_c == (y_cg << 2));
-                if (last_cg && implicit_non_zero_coeff && significant_coeff_group_flag[x_cg][y_cg]) {
-                    significant_coeff_flag_idx[nb_significant_coeff_flag] = n;
-                    nb_significant_coeff_flag++;
-                }
-            }
-        }
-
-        n_end = nb_significant_coeff_flag;
-
-        if (n_end) {
-            int first_nz_pos_in_cg = 16;
-            int last_nz_pos_in_cg = -1;
-            int c_rice_param = 0;
-            int first_greater1_coeff_idx = -1;
-            uint8_t coeff_abs_level_greater1_flag[16] = { 0 };
-            uint16_t coeff_sign_flag;
-            int sum_abs = 0;
-            int sign_hidden = 0;
-
-            // initialize first elem of coeff_bas_level_greater1_flag
-            int ctx_set = (i > 0 && c_idx == 0) ? 2 : 0;
-
-            if (!(i == num_last_subset) && greater1_ctx == 0)
-                ctx_set++;
-            greater1_ctx      = 1;
-            last_nz_pos_in_cg = significant_coeff_flag_idx[0];
-
-            for (m = 0; m < (n_end > 8 ? 8 : n_end); m++) {
-                int n_idx = significant_coeff_flag_idx[m];
-                int inc   = (ctx_set << 2) + greater1_ctx;
-                coeff_abs_level_greater1_flag[n_idx] =
-                    ff_hevc_coeff_abs_level_greater1_flag_decode(s, c_idx, inc);
-                if (coeff_abs_level_greater1_flag[n_idx]) {
-                    greater1_ctx = 0;
-                } else if (greater1_ctx > 0 && greater1_ctx < 3) {
-                    greater1_ctx++;
-                }
-
-                if (coeff_abs_level_greater1_flag[n_idx] &&
-                    first_greater1_coeff_idx == -1)
-                    first_greater1_coeff_idx = n_idx;
-            }
-            first_nz_pos_in_cg = significant_coeff_flag_idx[n_end - 1];
-            sign_hidden        = last_nz_pos_in_cg - first_nz_pos_in_cg >= 4 &&
-                                 !lc->cu.cu_transquant_bypass_flag;
-
-            if (first_greater1_coeff_idx != -1) {
-                coeff_abs_level_greater1_flag[first_greater1_coeff_idx] += ff_hevc_coeff_abs_level_greater2_flag_decode(s, c_idx, ctx_set);
-            }
-            if (!s->ps.pps->sign_data_hiding_flag || !sign_hidden) {
-                coeff_sign_flag = ff_hevc_coeff_sign_flag(s, nb_significant_coeff_flag) << (16 - nb_significant_coeff_flag);
-            } else {
-                coeff_sign_flag = ff_hevc_coeff_sign_flag(s, nb_significant_coeff_flag - 1) << (16 - (nb_significant_coeff_flag - 1));
-            }
-
-            for (m = 0; m < n_end; m++) {
-                n = significant_coeff_flag_idx[m];
-                GET_COORD(offset, n);
-                trans_coeff_level = 1 + coeff_abs_level_greater1_flag[n];
-                if (trans_coeff_level == ((m < 8) ?
-                                          ((n == first_greater1_coeff_idx) ? 3 : 2) : 1)) {
-                    int last_coeff_abs_level_remaining = ff_hevc_coeff_abs_level_remaining(s, trans_coeff_level, c_rice_param);
-
-                    trans_coeff_level += last_coeff_abs_level_remaining;
-                    if ((trans_coeff_level) > (3 * (1 << c_rice_param)))
-                        c_rice_param = FFMIN(c_rice_param + 1, 4);
-                }
-                if (s->ps.pps->sign_data_hiding_flag && sign_hidden) {
-                    sum_abs += trans_coeff_level;
-                    if (n == first_nz_pos_in_cg && ((sum_abs & 1) == 1))
-                        trans_coeff_level = -trans_coeff_level;
-                }
-                if (coeff_sign_flag >> 15)
-                    trans_coeff_level = -trans_coeff_level;
-                coeff_sign_flag <<= 1;
-                if (!lc->cu.cu_transquant_bypass_flag) {
-                    if (s->ps.sps->scaling_list_enable_flag) {
-                        if (y_c || x_c || log2_trafo_size < 4) {
-                            int pos;
-                            switch (log2_trafo_size) {
-                            case 3:  pos = (y_c        << 3) +  x_c;       break;
-                            case 4:  pos = ((y_c >> 1) << 3) + (x_c >> 1); break;
-                            case 5:  pos = ((y_c >> 2) << 3) + (x_c >> 2); break;
-                            default: pos = (y_c        << 2) +  x_c;
-                            }
-                            scale_m = scale_matrix[pos];
-                        } else {
-                            scale_m = dc_scale;
-                        }
-                    }
-                    trans_coeff_level = (trans_coeff_level * (int64_t)scale * (int64_t)scale_m + add) >> shift;
-                    if(trans_coeff_level < 0) {
-                        if((~trans_coeff_level) & 0xFffffffffff8000)
-                            trans_coeff_level = -32768;
-                    } else {
-                        if (trans_coeff_level & 0xffffffffffff8000)
-                            trans_coeff_level = 32767;
-                    }
-                }
-                coeffs[y_c * trafo_size + x_c] = trans_coeff_level;
-            }
-        }
-    }
-
-    if (!lc->cu.cu_transquant_bypass_flag) {
-        if (transform_skip_flag)
-            s->hevcdsp.dequant(coeffs);
-        else if (lc->cu.pred_mode == MODE_INTRA && c_idx == 0 &&
-                 log2_trafo_size == 2)
-            s->hevcdsp.transform_4x4_luma(coeffs);
-        else {
-            int max_xy = FFMAX(last_significant_coeff_x, last_significant_coeff_y);
-            if (max_xy == 0)
-                s->hevcdsp.idct_dc[log2_trafo_size - 2](coeffs);
-            else {
-                int col_limit = last_significant_coeff_x + last_significant_coeff_y + 4;
-                if (max_xy < 4)
-                    col_limit = FFMIN(4, col_limit);
-                else if (max_xy < 8)
-                    col_limit = FFMIN(8, col_limit);
-                else if (max_xy < 12)
-                    col_limit = FFMIN(24, col_limit);
-                s->hevcdsp.idct[log2_trafo_size - 2](coeffs, col_limit);
-            }
-        }
-    }
-    s->hevcdsp.add_residual[log2_trafo_size - 2](dst, coeffs, stride);
-}
-
-static int hls_transform_unit(HEVCContext *s, int x0, int y0,
-                              int xBase, int yBase, int cb_xBase, int cb_yBase,
-                              int log2_cb_size, int log2_trafo_size,
-                              int blk_idx, int cbf_luma, int cbf_cb, int cbf_cr)
-{
-    HEVCLocalContext *lc = &s->HEVClc;
-
-    if (lc->cu.pred_mode == MODE_INTRA) {
-        int trafo_size = 1 << log2_trafo_size;
-        ff_hevc_set_neighbour_available(s, x0, y0, trafo_size, trafo_size);
-
-        s->hpc.intra_pred[log2_trafo_size - 2](s, x0, y0, 0);
-        if (log2_trafo_size > 2) {
-            trafo_size = trafo_size << (s->ps.sps->hshift[1] - 1);
-            ff_hevc_set_neighbour_available(s, x0, y0, trafo_size, trafo_size);
-            s->hpc.intra_pred[log2_trafo_size - 3](s, x0, y0, 1);
-            s->hpc.intra_pred[log2_trafo_size - 3](s, x0, y0, 2);
-        } else if (blk_idx == 3) {
-            trafo_size = trafo_size << s->ps.sps->hshift[1];
-            ff_hevc_set_neighbour_available(s, xBase, yBase,
-                                            trafo_size, trafo_size);
-            s->hpc.intra_pred[log2_trafo_size - 2](s, xBase, yBase, 1);
-            s->hpc.intra_pred[log2_trafo_size - 2](s, xBase, yBase, 2);
-        }
-    }
-
-    if (cbf_luma || cbf_cb || cbf_cr) {
-        int scan_idx   = SCAN_DIAG;
-        int scan_idx_c = SCAN_DIAG;
-
-        if (s->ps.pps->cu_qp_delta_enabled_flag && !lc->tu.is_cu_qp_delta_coded) {
-            lc->tu.cu_qp_delta = ff_hevc_cu_qp_delta_abs(s);
-            if (lc->tu.cu_qp_delta != 0)
-                if (ff_hevc_cu_qp_delta_sign_flag(s) == 1)
-                    lc->tu.cu_qp_delta = -lc->tu.cu_qp_delta;
-            lc->tu.is_cu_qp_delta_coded = 1;
-
-            if (lc->tu.cu_qp_delta < -(26 + s->ps.sps->qp_bd_offset / 2) ||
-                lc->tu.cu_qp_delta >  (25 + s->ps.sps->qp_bd_offset / 2)) {
-                av_log(s->avctx, AV_LOG_ERROR,
-                       "The cu_qp_delta %d is outside the valid range "
-                       "[%d, %d].\n",
-                       lc->tu.cu_qp_delta,
-                       -(26 + s->ps.sps->qp_bd_offset / 2),
-                        (25 + s->ps.sps->qp_bd_offset / 2));
-                return AVERROR_INVALIDDATA;
-            }
-
-            ff_hevc_set_qPy(s, x0, y0, cb_xBase, cb_yBase, log2_cb_size);
-        }
-
-        if (lc->cu.pred_mode == MODE_INTRA && log2_trafo_size < 4) {
-            if (lc->tu.cur_intra_pred_mode >= 6 &&
-                lc->tu.cur_intra_pred_mode <= 14) {
-                scan_idx = SCAN_VERT;
-            } else if (lc->tu.cur_intra_pred_mode >= 22 &&
-                       lc->tu.cur_intra_pred_mode <= 30) {
-                scan_idx = SCAN_HORIZ;
-            }
-
-            if (lc->pu.intra_pred_mode_c >=  6 &&
-                lc->pu.intra_pred_mode_c <= 14) {
-                scan_idx_c = SCAN_VERT;
-            } else if (lc->pu.intra_pred_mode_c >= 22 &&
-                       lc->pu.intra_pred_mode_c <= 30) {
-                scan_idx_c = SCAN_HORIZ;
-            }
-        }
-
-        if (cbf_luma)
-            hls_residual_coding(s, x0, y0, log2_trafo_size, scan_idx, 0);
-        if (log2_trafo_size > 2) {
-            if (cbf_cb)
-                hls_residual_coding(s, x0, y0, log2_trafo_size - 1, scan_idx_c, 1);
-            if (cbf_cr)
-                hls_residual_coding(s, x0, y0, log2_trafo_size - 1, scan_idx_c, 2);
-        } else if (blk_idx == 3) {
-            if (cbf_cb)
-                hls_residual_coding(s, xBase, yBase, log2_trafo_size, scan_idx_c, 1);
-            if (cbf_cr)
-                hls_residual_coding(s, xBase, yBase, log2_trafo_size, scan_idx_c, 2);
-        }
-    }
-    return 0;
-}
-
-static void set_deblocking_bypass(HEVCContext *s, int x0, int y0, int log2_cb_size)
-{
-    int cb_size          = 1 << log2_cb_size;
-    int log2_min_pu_size = s->ps.sps->log2_min_pu_size;
-
-    int min_pu_width     = s->ps.sps->min_pu_width;
-    int x_end = FFMIN(x0 + cb_size, s->ps.sps->width);
-    int y_end = FFMIN(y0 + cb_size, s->ps.sps->height);
-    int i, j;
-
-    for (j = (y0 >> log2_min_pu_size); j < (y_end >> log2_min_pu_size); j++)
-        for (i = (x0 >> log2_min_pu_size); i < (x_end >> log2_min_pu_size); i++)
-            s->is_pcm[i + j * min_pu_width] = 2;
-}
-
-static int hls_transform_tree(HEVCContext *s, int x0, int y0,
-                              int xBase, int yBase, int cb_xBase, int cb_yBase,
-                              int log2_cb_size, int log2_trafo_size,
-                              int trafo_depth, int blk_idx,
-                              int cbf_cb, int cbf_cr)
-{
-    HEVCLocalContext *lc = &s->HEVClc;
-    uint8_t split_transform_flag;
-    int ret;
-
-    if (lc->cu.intra_split_flag) {
-        if (trafo_depth == 1)
-            lc->tu.cur_intra_pred_mode = lc->pu.intra_pred_mode[blk_idx];
-    } else {
-        lc->tu.cur_intra_pred_mode = lc->pu.intra_pred_mode[0];
-    }
-
-    if (log2_trafo_size <= s->ps.sps->log2_max_trafo_size &&
-        log2_trafo_size >  s->ps.sps->log2_min_tb_size    &&
-        trafo_depth     < lc->cu.max_trafo_depth       &&
-        !(lc->cu.intra_split_flag && trafo_depth == 0)) {
-        split_transform_flag = ff_hevc_split_transform_flag_decode(s, log2_trafo_size);
-    } else {
-        int inter_split = s->ps.sps->max_transform_hierarchy_depth_inter == 0 &&
-                          lc->cu.pred_mode == MODE_INTER &&
-                          lc->cu.part_mode != PART_2Nx2N &&
-                          trafo_depth == 0;
-
-        split_transform_flag = log2_trafo_size > s->ps.sps->log2_max_trafo_size ||
-                               (lc->cu.intra_split_flag && trafo_depth == 0) ||
-                               inter_split;
-    }
-
-    if (log2_trafo_size > 2 && (trafo_depth == 0 || cbf_cb))
-        cbf_cb = ff_hevc_cbf_cb_cr_decode(s, trafo_depth);
-    else if (log2_trafo_size > 2 || trafo_depth == 0)
-        cbf_cb = 0;
-    if (log2_trafo_size > 2 && (trafo_depth == 0 || cbf_cr))
-        cbf_cr = ff_hevc_cbf_cb_cr_decode(s, trafo_depth);
-    else if (log2_trafo_size > 2 || trafo_depth == 0)
-        cbf_cr = 0;
-
-    if (split_transform_flag) {
-        const int trafo_size_split = 1 << (log2_trafo_size - 1);
-        const int x1 = x0 + trafo_size_split;
-        const int y1 = y0 + trafo_size_split;
-
-#define SUBDIVIDE(x, y, idx)                                                    \
-do {                                                                            \
-    ret = hls_transform_tree(s, x, y, x0, y0, cb_xBase, cb_yBase, log2_cb_size, \
-                             log2_trafo_size - 1, trafo_depth + 1, idx,         \
-                             cbf_cb, cbf_cr);                                   \
-    if (ret < 0)                                                                \
-        return ret;                                                             \
-} while (0)
-
-        SUBDIVIDE(x0, y0, 0);
-        SUBDIVIDE(x1, y0, 1);
-        SUBDIVIDE(x0, y1, 2);
-        SUBDIVIDE(x1, y1, 3);
-
-#undef SUBDIVIDE
-    } else {
-        int min_tu_size      = 1 << s->ps.sps->log2_min_tb_size;
-        int log2_min_tu_size = s->ps.sps->log2_min_tb_size;
-        int min_tu_width     = s->ps.sps->min_tb_width;
-        int cbf_luma         = 1;
-
-        if (lc->cu.pred_mode == MODE_INTRA || trafo_depth != 0 ||
-            cbf_cb || cbf_cr)
-            cbf_luma = ff_hevc_cbf_luma_decode(s, trafo_depth);
-
-        ret = hls_transform_unit(s, x0, y0, xBase, yBase, cb_xBase, cb_yBase,
-                                 log2_cb_size, log2_trafo_size,
-                                 blk_idx, cbf_luma, cbf_cb, cbf_cr);
-        if (ret < 0)
-            return ret;
-        // TODO: store cbf_luma somewhere else
-        if (cbf_luma) {
-            int i, j;
-            for (i = 0; i < (1 << log2_trafo_size); i += min_tu_size)
-                for (j = 0; j < (1 << log2_trafo_size); j += min_tu_size) {
-                    int x_tu = (x0 + j) >> log2_min_tu_size;
-                    int y_tu = (y0 + i) >> log2_min_tu_size;
-                    s->cbf_luma[y_tu * min_tu_width + x_tu] = 1;
-                }
-        }
-        if (!s->sh.disable_deblocking_filter_flag) {
-            ff_hevc_deblocking_boundary_strengths(s, x0, y0, log2_trafo_size);
-            if (s->ps.pps->transquant_bypass_enable_flag &&
-                lc->cu.cu_transquant_bypass_flag)
-                set_deblocking_bypass(s, x0, y0, log2_trafo_size);
-        }
-    }
-    return 0;
-}
-
-static int hls_pcm_sample(HEVCContext *s, int x0, int y0, int log2_cb_size)
-{
-    //TODO: non-4:2:0 support
-    HEVCLocalContext *lc = &s->HEVClc;
-    GetBitContext gb;
-    int cb_size   = 1 << log2_cb_size;
-    ptrdiff_t stride0 = s->frame->linesize[0];
-    ptrdiff_t stride1 = s->frame->linesize[1];
-    ptrdiff_t stride2 = s->frame->linesize[2];
-    uint8_t *dst0 = &s->frame->data[0][y0 * stride0 + (x0 << s->ps.sps->pixel_shift)];
-    uint8_t *dst1 = &s->frame->data[1][(y0 >> s->ps.sps->vshift[1]) * stride1 + ((x0 >> s->ps.sps->hshift[1]) << s->ps.sps->pixel_shift)];
-    uint8_t *dst2 = &s->frame->data[2][(y0 >> s->ps.sps->vshift[2]) * stride2 + ((x0 >> s->ps.sps->hshift[2]) << s->ps.sps->pixel_shift)];
-
-    int length         = cb_size * cb_size * s->ps.sps->pcm.bit_depth + ((cb_size * cb_size) >> 1) * s->ps.sps->pcm.bit_depth_chroma;
-    const uint8_t *pcm = skip_bytes(&lc->cc, (length + 7) >> 3);
-    int ret;
-
-    if (!s->sh.disable_deblocking_filter_flag)
-        ff_hevc_deblocking_boundary_strengths(s, x0, y0, log2_cb_size);
-
-    ret = init_get_bits(&gb, pcm, length);
-    if (ret < 0)
-        return ret;
-
-    s->hevcdsp.put_pcm(dst0, stride0, cb_size,     &gb, s->ps.sps->pcm.bit_depth);
-    s->hevcdsp.put_pcm(dst1, stride1, cb_size / 2, &gb, s->ps.sps->pcm.bit_depth_chroma);
-    s->hevcdsp.put_pcm(dst2, stride2, cb_size / 2, &gb, s->ps.sps->pcm.bit_depth_chroma);
-    return 0;
-}
-
-static void hls_mvd_coding(HEVCContext *s, int x0, int y0, int log2_cb_size)
-{
-    HEVCLocalContext *lc = &s->HEVClc;
-    int x = ff_hevc_abs_mvd_greater0_flag_decode(s);
-    int y = ff_hevc_abs_mvd_greater0_flag_decode(s);
-
-    if (x)
-        x += ff_hevc_abs_mvd_greater1_flag_decode(s);
-    if (y)
-        y += ff_hevc_abs_mvd_greater1_flag_decode(s);
-
-    switch (x) {
-    case 2: lc->pu.mvd.x = ff_hevc_mvd_decode(s);           break;
-    case 1: lc->pu.mvd.x = ff_hevc_mvd_sign_flag_decode(s); break;
-    case 0: lc->pu.mvd.x = 0;                               break;
-    }
-
-    switch (y) {
-    case 2: lc->pu.mvd.y = ff_hevc_mvd_decode(s);           break;
-    case 1: lc->pu.mvd.y = ff_hevc_mvd_sign_flag_decode(s); break;
-    case 0: lc->pu.mvd.y = 0;                               break;
-    }
-}
-
-/**
- * 8.5.3.2.2.1 Luma sample interpolation process
- *
- * @param s HEVC decoding context
- * @param dst target buffer for block data at block position
- * @param dststride stride of the dst buffer
- * @param ref reference picture buffer at origin (0, 0)
- * @param mv motion vector (relative to block position) to get pixel data from
- * @param x_off horizontal position of block from origin (0, 0)
- * @param y_off vertical position of block from origin (0, 0)
- * @param block_w width of block
- * @param block_h height of block
- */
-static void luma_mc(HEVCContext *s, int16_t *dst, ptrdiff_t dststride,
-                    AVFrame *ref, const Mv *mv, int x_off, int y_off,
-                    int block_w, int block_h, int pred_idx)
-{
-    HEVCLocalContext *lc = &s->HEVClc;
-    uint8_t *src         = ref->data[0];
-    ptrdiff_t srcstride  = ref->linesize[0];
-    int pic_width        = s->ps.sps->width;
-    int pic_height       = s->ps.sps->height;
-
-    int mx         = mv->x & 3;
-    int my         = mv->y & 3;
-    int extra_left = ff_hevc_qpel_extra_before[mx];
-    int extra_top  = ff_hevc_qpel_extra_before[my];
-
-    x_off += mv->x >> 2;
-    y_off += mv->y >> 2;
-    src   += y_off * srcstride + (x_off * (1 << s->ps.sps->pixel_shift));
-
-    if (x_off < extra_left || y_off < extra_top ||
-        x_off >= pic_width - block_w - ff_hevc_qpel_extra_after[mx] ||
-        y_off >= pic_height - block_h - ff_hevc_qpel_extra_after[my]) {
-        const ptrdiff_t edge_emu_stride = EDGE_EMU_BUFFER_STRIDE << s->ps.sps->pixel_shift;
-        int offset = extra_top * srcstride + (extra_left << s->ps.sps->pixel_shift);
-        int buf_offset = extra_top *
-                         edge_emu_stride + (extra_left << s->ps.sps->pixel_shift);
-
-        s->vdsp.emulated_edge_mc(lc->edge_emu_buffer, src - offset,
-                                 edge_emu_stride, srcstride,
-                                 block_w + ff_hevc_qpel_extra[mx],
-                                 block_h + ff_hevc_qpel_extra[my],
-                                 x_off - extra_left, y_off - extra_top,
-                                 pic_width, pic_height);
-        src = lc->edge_emu_buffer + buf_offset;
-        srcstride = edge_emu_stride;
-    }
-    s->hevcdsp.put_hevc_qpel[!!my][!!mx][pred_idx](dst, dststride, src, srcstride,
-                                                   block_h, mx, my, lc->mc_buffer);
-}
-
-/**
- * 8.5.3.2.2.2 Chroma sample interpolation process
- *
- * @param s HEVC decoding context
- * @param dst1 target buffer for block data at block position (U plane)
- * @param dst2 target buffer for block data at block position (V plane)
- * @param dststride stride of the dst1 and dst2 buffers
- * @param ref reference picture buffer at origin (0, 0)
- * @param mv motion vector (relative to block position) to get pixel data from
- * @param x_off horizontal position of block from origin (0, 0)
- * @param y_off vertical position of block from origin (0, 0)
- * @param block_w width of block
- * @param block_h height of block
- */
-static void chroma_mc(HEVCContext *s, int16_t *dst1, int16_t *dst2,
-                      ptrdiff_t dststride, AVFrame *ref, const Mv *mv,
-                      int x_off, int y_off, int block_w, int block_h, int pred_idx)
-{
-    HEVCLocalContext *lc = &s->HEVClc;
-    uint8_t *src1        = ref->data[1];
-    uint8_t *src2        = ref->data[2];
-    ptrdiff_t src1stride = ref->linesize[1];
-    ptrdiff_t src2stride = ref->linesize[2];
-    int pic_width        = s->ps.sps->width >> 1;
-    int pic_height       = s->ps.sps->height >> 1;
-
-    int mx = mv->x & 7;
-    int my = mv->y & 7;
-
-    x_off += mv->x >> 3;
-    y_off += mv->y >> 3;
-    src1  += y_off * src1stride + (x_off * (1 << s->ps.sps->pixel_shift));
-    src2  += y_off * src2stride + (x_off * (1 << s->ps.sps->pixel_shift));
-
-    if (x_off < EPEL_EXTRA_BEFORE || y_off < EPEL_EXTRA_AFTER ||
-        x_off >= pic_width - block_w - EPEL_EXTRA_AFTER ||
-        y_off >= pic_height - block_h - EPEL_EXTRA_AFTER) {
-        const ptrdiff_t edge_emu_stride = EDGE_EMU_BUFFER_STRIDE << s->ps.sps->pixel_shift;
-        int offset1 = EPEL_EXTRA_BEFORE * (src1stride + (1 << s->ps.sps->pixel_shift));
-        int buf_offset1 = EPEL_EXTRA_BEFORE *
-                          (edge_emu_stride + (1 << s->ps.sps->pixel_shift));
-        int offset2 = EPEL_EXTRA_BEFORE * (src2stride + (1 << s->ps.sps->pixel_shift));
-        int buf_offset2 = EPEL_EXTRA_BEFORE *
-                          (edge_emu_stride + (1 << s->ps.sps->pixel_shift));
-
-        s->vdsp.emulated_edge_mc(lc->edge_emu_buffer, src1 - offset1,
-                                 edge_emu_stride, src1stride,
-                                 block_w + EPEL_EXTRA, block_h + EPEL_EXTRA,
-                                 x_off - EPEL_EXTRA_BEFORE,
-                                 y_off - EPEL_EXTRA_BEFORE,
-                                 pic_width, pic_height);
-
-        src1 = lc->edge_emu_buffer + buf_offset1;
-        src1stride = edge_emu_stride;
-        s->hevcdsp.put_hevc_epel[!!my][!!mx][pred_idx](dst1, dststride, src1, src1stride,
-                                                       block_h, mx, my, lc->mc_buffer);
-
-        s->vdsp.emulated_edge_mc(lc->edge_emu_buffer, src2 - offset2,
-                                 edge_emu_stride, src2stride,
-                                 block_w + EPEL_EXTRA, block_h + EPEL_EXTRA,
-                                 x_off - EPEL_EXTRA_BEFORE,
-                                 y_off - EPEL_EXTRA_BEFORE,
-                                 pic_width, pic_height);
-        src2 = lc->edge_emu_buffer + buf_offset2;
-        src2stride = edge_emu_stride;
-
-        s->hevcdsp.put_hevc_epel[!!my][!!mx][pred_idx](dst2, dststride, src2, src2stride,
-                                                       block_h, mx, my, lc->mc_buffer);
-    } else {
-        s->hevcdsp.put_hevc_epel[!!my][!!mx][pred_idx](dst1, dststride, src1, src1stride,
-                                                       block_h, mx, my, lc->mc_buffer);
-        s->hevcdsp.put_hevc_epel[!!my][!!mx][pred_idx](dst2, dststride, src2, src2stride,
-                                                       block_h, mx, my, lc->mc_buffer);
-    }
-}
-
-static void hevc_await_progress(HEVCContext *s, HEVCFrame *ref,
-                                const Mv *mv, int y0, int height)
-{
-    int y = (mv->y >> 2) + y0 + height + 9;
-    ff_thread_await_progress(&ref->tf, y, 0);
-}
-
-static void hevc_luma_mv_mpv_mode(HEVCContext *s, int x0, int y0, int nPbW,
-                                  int nPbH, int log2_cb_size, int part_idx,
-                                  int merge_idx, MvField *mv)
-{
-    HEVCLocalContext *lc             = &s->HEVClc;
-    enum InterPredIdc inter_pred_idc = PRED_L0;
-    int mvp_flag;
-
-    ff_hevc_set_neighbour_available(s, x0, y0, nPbW, nPbH);
-    if (s->sh.slice_type == B_SLICE)
-        inter_pred_idc = ff_hevc_inter_pred_idc_decode(s, nPbW, nPbH);
-
-    if (inter_pred_idc != PRED_L1) {
-        if (s->sh.nb_refs[L0])
-            mv->ref_idx[0]= ff_hevc_ref_idx_lx_decode(s, s->sh.nb_refs[L0]);
-
-        mv->pred_flag[0] = 1;
-        hls_mvd_coding(s, x0, y0, 0);
-        mvp_flag = ff_hevc_mvp_lx_flag_decode(s);
-        ff_hevc_luma_mv_mvp_mode(s, x0, y0, nPbW, nPbH, log2_cb_size,
-                                 part_idx, merge_idx, mv, mvp_flag, 0);
-        mv->mv[0].x += lc->pu.mvd.x;
-        mv->mv[0].y += lc->pu.mvd.y;
-    }
-
-    if (inter_pred_idc != PRED_L0) {
-        if (s->sh.nb_refs[L1])
-            mv->ref_idx[1]= ff_hevc_ref_idx_lx_decode(s, s->sh.nb_refs[L1]);
-
-        if (s->sh.mvd_l1_zero_flag == 1 && inter_pred_idc == PRED_BI) {
-            AV_ZERO32(&lc->pu.mvd);
-        } else {
-            hls_mvd_coding(s, x0, y0, 1);
-        }
-
-        mv->pred_flag[1] = 1;
-        mvp_flag = ff_hevc_mvp_lx_flag_decode(s);
-        ff_hevc_luma_mv_mvp_mode(s, x0, y0, nPbW, nPbH, log2_cb_size,
-                                 part_idx, merge_idx, mv, mvp_flag, 1);
-        mv->mv[1].x += lc->pu.mvd.x;
-        mv->mv[1].y += lc->pu.mvd.y;
-    }
-}
-
-static void hls_prediction_unit(HEVCContext *s, int x0, int y0,
-                                int nPbW, int nPbH,
-                                int log2_cb_size, int partIdx)
-{
-    static const int pred_indices[] = {
-        [4] = 0, [8] = 1, [12] = 2, [16] = 3, [24] = 4, [32] = 5, [48] = 6, [64] = 7,
-    };
-    const int pred_idx = pred_indices[nPbW];
-
-#define POS(c_idx, x, y)                                                              \
-    &s->frame->data[c_idx][((y) >> s->ps.sps->vshift[c_idx]) * s->frame->linesize[c_idx] + \
-                           (((x) >> s->ps.sps->hshift[c_idx]) << s->ps.sps->pixel_shift)]
-    HEVCLocalContext *lc = &s->HEVClc;
-    int merge_idx = 0;
-    struct MvField current_mv = {{{ 0 }}};
-
-    int min_pu_width = s->ps.sps->min_pu_width;
-
-    MvField *tab_mvf = s->ref->tab_mvf;
-    RefPicList  *refPicList = s->ref->refPicList;
-    HEVCFrame *ref0, *ref1;
-
-    ptrdiff_t tmpstride = MAX_PB_SIZE * sizeof(int16_t);
-
-    uint8_t *dst0 = POS(0, x0, y0);
-    uint8_t *dst1 = POS(1, x0, y0);
-    uint8_t *dst2 = POS(2, x0, y0);
-    int log2_min_cb_size = s->ps.sps->log2_min_cb_size;
-    int min_cb_width     = s->ps.sps->min_cb_width;
-    int x_cb             = x0 >> log2_min_cb_size;
-    int y_cb             = y0 >> log2_min_cb_size;
-    int x_pu, y_pu;
-    int i, j;
-
-    int skip_flag = SAMPLE_CTB(s->skip_flag, x_cb, y_cb);
-
-    if (!skip_flag)
-        lc->pu.merge_flag = ff_hevc_merge_flag_decode(s);
-
-    if (skip_flag || lc->pu.merge_flag) {
-        if (s->sh.max_num_merge_cand > 1)
-            merge_idx = ff_hevc_merge_idx_decode(s);
-        else
-            merge_idx = 0;
-
-        ff_hevc_luma_mv_merge_mode(s, x0, y0, nPbW, nPbH, log2_cb_size,
-                                   partIdx, merge_idx, &current_mv);
-    } else {
-        hevc_luma_mv_mpv_mode(s, x0, y0, nPbW, nPbH, log2_cb_size,
-                              partIdx, merge_idx, &current_mv);
-    }
-
-    x_pu = x0 >> s->ps.sps->log2_min_pu_size;
-    y_pu = y0 >> s->ps.sps->log2_min_pu_size;
-
-    for (j = 0; j < nPbH >> s->ps.sps->log2_min_pu_size; j++)
-        for (i = 0; i < nPbW >> s->ps.sps->log2_min_pu_size; i++)
-            tab_mvf[(y_pu + j) * min_pu_width + x_pu + i] = current_mv;
-
-    if (current_mv.pred_flag[0]) {
-        ref0 = refPicList[0].ref[current_mv.ref_idx[0]];
-        if (!ref0)
-            return;
-        hevc_await_progress(s, ref0, &current_mv.mv[0], y0, nPbH);
-    }
-    if (current_mv.pred_flag[1]) {
-        ref1 = refPicList[1].ref[current_mv.ref_idx[1]];
-        if (!ref1)
-            return;
-        hevc_await_progress(s, ref1, &current_mv.mv[1], y0, nPbH);
-    }
-
-    if (current_mv.pred_flag[0] && !current_mv.pred_flag[1]) {
-        DECLARE_ALIGNED(16, int16_t,  tmp[MAX_PB_SIZE * MAX_PB_SIZE]);
-        DECLARE_ALIGNED(16, int16_t, tmp2[MAX_PB_SIZE * MAX_PB_SIZE]);
-
-        luma_mc(s, tmp, tmpstride, ref0->frame,
-                &current_mv.mv[0], x0, y0, nPbW, nPbH, pred_idx);
-
-        if ((s->sh.slice_type == P_SLICE && s->ps.pps->weighted_pred_flag) ||
-            (s->sh.slice_type == B_SLICE && s->ps.pps->weighted_bipred_flag)) {
-            s->hevcdsp.weighted_pred[pred_idx](s->sh.luma_log2_weight_denom,
-                                               s->sh.luma_weight_l0[current_mv.ref_idx[0]],
-                                               s->sh.luma_offset_l0[current_mv.ref_idx[0]],
-                                               dst0, s->frame->linesize[0], tmp,
-                                               tmpstride, nPbH);
-        } else {
-            s->hevcdsp.put_unweighted_pred[pred_idx](dst0, s->frame->linesize[0], tmp, tmpstride, nPbH);
-        }
-        chroma_mc(s, tmp, tmp2, tmpstride, ref0->frame,
-                  &current_mv.mv[0], x0 / 2, y0 / 2, nPbW / 2, nPbH / 2, pred_idx);
-
-        if ((s->sh.slice_type == P_SLICE && s->ps.pps->weighted_pred_flag) ||
-            (s->sh.slice_type == B_SLICE && s->ps.pps->weighted_bipred_flag)) {
-            s->hevcdsp.weighted_pred_chroma[pred_idx](s->sh.chroma_log2_weight_denom,
-                                                      s->sh.chroma_weight_l0[current_mv.ref_idx[0]][0],
-                                                      s->sh.chroma_offset_l0[current_mv.ref_idx[0]][0],
-                                                      dst1, s->frame->linesize[1], tmp, tmpstride,
-                                                      nPbH / 2);
-            s->hevcdsp.weighted_pred_chroma[pred_idx](s->sh.chroma_log2_weight_denom,
-                                                      s->sh.chroma_weight_l0[current_mv.ref_idx[0]][1],
-                                                      s->sh.chroma_offset_l0[current_mv.ref_idx[0]][1],
-                                                      dst2, s->frame->linesize[2], tmp2, tmpstride,
-                                                      nPbH / 2);
-        } else {
-            s->hevcdsp.put_unweighted_pred_chroma[pred_idx](dst1, s->frame->linesize[1], tmp,  tmpstride, nPbH / 2);
-            s->hevcdsp.put_unweighted_pred_chroma[pred_idx](dst2, s->frame->linesize[2], tmp2, tmpstride, nPbH / 2);
-        }
-    } else if (!current_mv.pred_flag[0] && current_mv.pred_flag[1]) {
-        DECLARE_ALIGNED(16, int16_t, tmp [MAX_PB_SIZE * MAX_PB_SIZE]);
-        DECLARE_ALIGNED(16, int16_t, tmp2[MAX_PB_SIZE * MAX_PB_SIZE]);
-
-        luma_mc(s, tmp, tmpstride, ref1->frame,
-                &current_mv.mv[1], x0, y0, nPbW, nPbH, pred_idx);
-
-        if ((s->sh.slice_type == P_SLICE && s->ps.pps->weighted_pred_flag) ||
-            (s->sh.slice_type == B_SLICE && s->ps.pps->weighted_bipred_flag)) {
-            s->hevcdsp.weighted_pred[pred_idx](s->sh.luma_log2_weight_denom,
-                                               s->sh.luma_weight_l1[current_mv.ref_idx[1]],
-                                               s->sh.luma_offset_l1[current_mv.ref_idx[1]],
-                                               dst0, s->frame->linesize[0], tmp, tmpstride,
-                                               nPbH);
-        } else {
-            s->hevcdsp.put_unweighted_pred[pred_idx](dst0, s->frame->linesize[0], tmp, tmpstride, nPbH);
-        }
-
-        chroma_mc(s, tmp, tmp2, tmpstride, ref1->frame,
-                  &current_mv.mv[1], x0 / 2, y0 / 2, nPbW / 2, nPbH / 2, pred_idx);
-
-        if ((s->sh.slice_type == P_SLICE && s->ps.pps->weighted_pred_flag) ||
-            (s->sh.slice_type == B_SLICE && s->ps.pps->weighted_bipred_flag)) {
-            s->hevcdsp.weighted_pred_chroma[pred_idx](s->sh.chroma_log2_weight_denom,
-                                                      s->sh.chroma_weight_l1[current_mv.ref_idx[1]][0],
-                                                      s->sh.chroma_offset_l1[current_mv.ref_idx[1]][0],
-                                                      dst1, s->frame->linesize[1], tmp, tmpstride, nPbH/2);
-            s->hevcdsp.weighted_pred_chroma[pred_idx](s->sh.chroma_log2_weight_denom,
-                                                      s->sh.chroma_weight_l1[current_mv.ref_idx[1]][1],
-                                                      s->sh.chroma_offset_l1[current_mv.ref_idx[1]][1],
-                                                      dst2, s->frame->linesize[2], tmp2, tmpstride, nPbH/2);
-        } else {
-            s->hevcdsp.put_unweighted_pred_chroma[pred_idx](dst1, s->frame->linesize[1], tmp,  tmpstride, nPbH / 2);
-            s->hevcdsp.put_unweighted_pred_chroma[pred_idx](dst2, s->frame->linesize[2], tmp2, tmpstride, nPbH / 2);
-        }
-    } else if (current_mv.pred_flag[0] && current_mv.pred_flag[1]) {
-        DECLARE_ALIGNED(16, int16_t, tmp [MAX_PB_SIZE * MAX_PB_SIZE]);
-        DECLARE_ALIGNED(16, int16_t, tmp2[MAX_PB_SIZE * MAX_PB_SIZE]);
-        DECLARE_ALIGNED(16, int16_t, tmp3[MAX_PB_SIZE * MAX_PB_SIZE]);
-        DECLARE_ALIGNED(16, int16_t, tmp4[MAX_PB_SIZE * MAX_PB_SIZE]);
-
-        luma_mc(s, tmp, tmpstride, ref0->frame,
-                &current_mv.mv[0], x0, y0, nPbW, nPbH, pred_idx);
-        luma_mc(s, tmp2, tmpstride, ref1->frame,
-                &current_mv.mv[1], x0, y0, nPbW, nPbH, pred_idx);
-
-        if ((s->sh.slice_type == P_SLICE && s->ps.pps->weighted_pred_flag) ||
-            (s->sh.slice_type == B_SLICE && s->ps.pps->weighted_bipred_flag)) {
-            s->hevcdsp.weighted_pred_avg[pred_idx](s->sh.luma_log2_weight_denom,
-                                                   s->sh.luma_weight_l0[current_mv.ref_idx[0]],
-                                                   s->sh.luma_weight_l1[current_mv.ref_idx[1]],
-                                                   s->sh.luma_offset_l0[current_mv.ref_idx[0]],
-                                                   s->sh.luma_offset_l1[current_mv.ref_idx[1]],
-                                                   dst0, s->frame->linesize[0],
-                                                   tmp, tmp2, tmpstride, nPbH);
-        } else {
-            s->hevcdsp.put_unweighted_pred_avg[pred_idx](dst0, s->frame->linesize[0],
-                                                         tmp, tmp2, tmpstride, nPbH);
-        }
-
-        chroma_mc(s, tmp, tmp2, tmpstride, ref0->frame,
-                  &current_mv.mv[0], x0 / 2, y0 / 2, nPbW / 2, nPbH / 2, pred_idx);
-        chroma_mc(s, tmp3, tmp4, tmpstride, ref1->frame,
-                  &current_mv.mv[1], x0 / 2, y0 / 2, nPbW / 2, nPbH / 2, pred_idx);
-
-        if ((s->sh.slice_type == P_SLICE && s->ps.pps->weighted_pred_flag) ||
-            (s->sh.slice_type == B_SLICE && s->ps.pps->weighted_bipred_flag)) {
-            s->hevcdsp.weighted_pred_avg_chroma[pred_idx](s->sh.chroma_log2_weight_denom,
-                                                          s->sh.chroma_weight_l0[current_mv.ref_idx[0]][0],
-                                                          s->sh.chroma_weight_l1[current_mv.ref_idx[1]][0],
-                                                          s->sh.chroma_offset_l0[current_mv.ref_idx[0]][0],
-                                                          s->sh.chroma_offset_l1[current_mv.ref_idx[1]][0],
-                                                          dst1, s->frame->linesize[1], tmp, tmp3,
-                                                          tmpstride, nPbH / 2);
-            s->hevcdsp.weighted_pred_avg_chroma[pred_idx](s->sh.chroma_log2_weight_denom,
-                                                          s->sh.chroma_weight_l0[current_mv.ref_idx[0]][1],
-                                                          s->sh.chroma_weight_l1[current_mv.ref_idx[1]][1],
-                                                          s->sh.chroma_offset_l0[current_mv.ref_idx[0]][1],
-                                                          s->sh.chroma_offset_l1[current_mv.ref_idx[1]][1],
-                                                          dst2, s->frame->linesize[2], tmp2, tmp4,
-                                                          tmpstride, nPbH / 2);
-        } else {
-            s->hevcdsp.put_unweighted_pred_avg_chroma[pred_idx](dst1, s->frame->linesize[1], tmp, tmp3,  tmpstride, nPbH/2);
-            s->hevcdsp.put_unweighted_pred_avg_chroma[pred_idx](dst2, s->frame->linesize[2], tmp2, tmp4, tmpstride, nPbH/2);
-        }
-    }
-}
-
-/**
- * 8.4.1
- */
-static int luma_intra_pred_mode(HEVCContext *s, int x0, int y0, int pu_size,
-                                int prev_intra_luma_pred_flag)
-{
-    HEVCLocalContext *lc = &s->HEVClc;
-    int x_pu             = x0 >> s->ps.sps->log2_min_pu_size;
-    int y_pu             = y0 >> s->ps.sps->log2_min_pu_size;
-    int min_pu_width     = s->ps.sps->min_pu_width;
-    int size_in_pus      = pu_size >> s->ps.sps->log2_min_pu_size;
-    int x0b              = x0 & ((1 << s->ps.sps->log2_ctb_size) - 1);
-    int y0b              = y0 & ((1 << s->ps.sps->log2_ctb_size) - 1);
-
-    int cand_up   = (lc->ctb_up_flag || y0b) ?
-                    s->tab_ipm[(y_pu - 1) * min_pu_width + x_pu] : INTRA_DC;
-    int cand_left = (lc->ctb_left_flag || x0b) ?
-                    s->tab_ipm[y_pu * min_pu_width + x_pu - 1]   : INTRA_DC;
-
-    int y_ctb = (y0 >> (s->ps.sps->log2_ctb_size)) << (s->ps.sps->log2_ctb_size);
-
-    MvField *tab_mvf = s->ref->tab_mvf;
-    int intra_pred_mode;
-    int candidate[3];
-    int i, j;
-
-    // intra_pred_mode prediction does not cross vertical CTB boundaries
-    if ((y0 - 1) < y_ctb)
-        cand_up = INTRA_DC;
-
-    if (cand_left == cand_up) {
-        if (cand_left < 2) {
-            candidate[0] = INTRA_PLANAR;
-            candidate[1] = INTRA_DC;
-            candidate[2] = INTRA_ANGULAR_26;
-        } else {
-            candidate[0] = cand_left;
-            candidate[1] = 2 + ((cand_left - 2 - 1 + 32) & 31);
-            candidate[2] = 2 + ((cand_left - 2 + 1) & 31);
-        }
-    } else {
-        candidate[0] = cand_left;
-        candidate[1] = cand_up;
-        if (candidate[0] != INTRA_PLANAR && candidate[1] != INTRA_PLANAR) {
-            candidate[2] = INTRA_PLANAR;
-        } else if (candidate[0] != INTRA_DC && candidate[1] != INTRA_DC) {
-            candidate[2] = INTRA_DC;
-        } else {
-            candidate[2] = INTRA_ANGULAR_26;
-        }
-    }
-
-    if (prev_intra_luma_pred_flag) {
-        intra_pred_mode = candidate[lc->pu.mpm_idx];
-    } else {
-        if (candidate[0] > candidate[1])
-            FFSWAP(uint8_t, candidate[0], candidate[1]);
-        if (candidate[0] > candidate[2])
-            FFSWAP(uint8_t, candidate[0], candidate[2]);
-        if (candidate[1] > candidate[2])
-            FFSWAP(uint8_t, candidate[1], candidate[2]);
-
-        intra_pred_mode = lc->pu.rem_intra_luma_pred_mode;
-        for (i = 0; i < 3; i++)
-            if (intra_pred_mode >= candidate[i])
-                intra_pred_mode++;
-    }
-
-    /* write the intra prediction units into the mv array */
-    if (!size_in_pus)
-        size_in_pus = 1;
-    for (i = 0; i < size_in_pus; i++) {
-        memset(&s->tab_ipm[(y_pu + i) * min_pu_width + x_pu],
-               intra_pred_mode, size_in_pus);
-
-        for (j = 0; j < size_in_pus; j++) {
-            tab_mvf[(y_pu + j) * min_pu_width + x_pu + i].is_intra     = 1;
-            tab_mvf[(y_pu + j) * min_pu_width + x_pu + i].pred_flag[0] = 0;
-            tab_mvf[(y_pu + j) * min_pu_width + x_pu + i].pred_flag[1] = 0;
-            tab_mvf[(y_pu + j) * min_pu_width + x_pu + i].ref_idx[0]   = 0;
-            tab_mvf[(y_pu + j) * min_pu_width + x_pu + i].ref_idx[1]   = 0;
-            tab_mvf[(y_pu + j) * min_pu_width + x_pu + i].mv[0].x      = 0;
-            tab_mvf[(y_pu + j) * min_pu_width + x_pu + i].mv[0].y      = 0;
-            tab_mvf[(y_pu + j) * min_pu_width + x_pu + i].mv[1].x      = 0;
-            tab_mvf[(y_pu + j) * min_pu_width + x_pu + i].mv[1].y      = 0;
-        }
-    }
-
-    return intra_pred_mode;
-}
-
-static av_always_inline void set_ct_depth(HEVCContext *s, int x0, int y0,
-                                          int log2_cb_size, int ct_depth)
-{
-    int length = (1 << log2_cb_size) >> s->ps.sps->log2_min_cb_size;
-    int x_cb   = x0 >> s->ps.sps->log2_min_cb_size;
-    int y_cb   = y0 >> s->ps.sps->log2_min_cb_size;
-    int y;
-
-    for (y = 0; y < length; y++)
-        memset(&s->tab_ct_depth[(y_cb + y) * s->ps.sps->min_cb_width + x_cb],
-               ct_depth, length);
-}
-
-static void intra_prediction_unit(HEVCContext *s, int x0, int y0,
-                                  int log2_cb_size)
-{
-    HEVCLocalContext *lc = &s->HEVClc;
-    static const uint8_t intra_chroma_table[4] = { 0, 26, 10, 1 };
-    uint8_t prev_intra_luma_pred_flag[4];
-    int split   = lc->cu.part_mode == PART_NxN;
-    int pb_size = (1 << log2_cb_size) >> split;
-    int side    = split + 1;
-    int chroma_mode;
-    int i, j;
-
-    for (i = 0; i < side; i++)
-        for (j = 0; j < side; j++)
-            prev_intra_luma_pred_flag[2 * i + j] = ff_hevc_prev_intra_luma_pred_flag_decode(s);
-
-    for (i = 0; i < side; i++) {
-        for (j = 0; j < side; j++) {
-            if (prev_intra_luma_pred_flag[2 * i + j])
-                lc->pu.mpm_idx = ff_hevc_mpm_idx_decode(s);
-            else
-                lc->pu.rem_intra_luma_pred_mode = ff_hevc_rem_intra_luma_pred_mode_decode(s);
-
-            lc->pu.intra_pred_mode[2 * i + j] =
-                luma_intra_pred_mode(s, x0 + pb_size * j, y0 + pb_size * i, pb_size,
-                                     prev_intra_luma_pred_flag[2 * i + j]);
-        }
-    }
-
-    chroma_mode = ff_hevc_intra_chroma_pred_mode_decode(s);
-    if (chroma_mode != 4) {
-        if (lc->pu.intra_pred_mode[0] == intra_chroma_table[chroma_mode])
-            lc->pu.intra_pred_mode_c = 34;
-        else
-            lc->pu.intra_pred_mode_c = intra_chroma_table[chroma_mode];
-    } else {
-        lc->pu.intra_pred_mode_c = lc->pu.intra_pred_mode[0];
-    }
-}
-
-static void intra_prediction_unit_default_value(HEVCContext *s,
-                                                int x0, int y0,
-                                                int log2_cb_size)
-{
-    HEVCLocalContext *lc = &s->HEVClc;
-    int pb_size          = 1 << log2_cb_size;
-    int size_in_pus      = pb_size >> s->ps.sps->log2_min_pu_size;
-    int min_pu_width     = s->ps.sps->min_pu_width;
-    MvField *tab_mvf     = s->ref->tab_mvf;
-    int x_pu             = x0 >> s->ps.sps->log2_min_pu_size;
-    int y_pu             = y0 >> s->ps.sps->log2_min_pu_size;
-    int j, k;
-
-    if (size_in_pus == 0)
-        size_in_pus = 1;
-    for (j = 0; j < size_in_pus; j++) {
-        memset(&s->tab_ipm[(y_pu + j) * min_pu_width + x_pu], INTRA_DC, size_in_pus);
-        for (k = 0; k < size_in_pus; k++)
-            tab_mvf[(y_pu + j) * min_pu_width + x_pu + k].is_intra = lc->cu.pred_mode == MODE_INTRA;
-    }
-}
-
-static int hls_coding_unit(HEVCContext *s, int x0, int y0, int log2_cb_size)
-{
-    int cb_size          = 1 << log2_cb_size;
-    HEVCLocalContext *lc = &s->HEVClc;
-    int log2_min_cb_size = s->ps.sps->log2_min_cb_size;
-    int length           = cb_size >> log2_min_cb_size;
-    int min_cb_width     = s->ps.sps->min_cb_width;
-    int x_cb             = x0 >> log2_min_cb_size;
-    int y_cb             = y0 >> log2_min_cb_size;
-    int x, y, ret;
-
-    lc->cu.x                = x0;
-    lc->cu.y                = y0;
-    lc->cu.pred_mode        = MODE_INTRA;
-    lc->cu.part_mode        = PART_2Nx2N;
-    lc->cu.intra_split_flag = 0;
-
-    SAMPLE_CTB(s->skip_flag, x_cb, y_cb) = 0;
-    for (x = 0; x < 4; x++)
-        lc->pu.intra_pred_mode[x] = 1;
-    if (s->ps.pps->transquant_bypass_enable_flag) {
-        lc->cu.cu_transquant_bypass_flag = ff_hevc_cu_transquant_bypass_flag_decode(s);
-        if (lc->cu.cu_transquant_bypass_flag)
-            set_deblocking_bypass(s, x0, y0, log2_cb_size);
-    } else
-        lc->cu.cu_transquant_bypass_flag = 0;
-
-    if (s->sh.slice_type != I_SLICE) {
-        uint8_t skip_flag = ff_hevc_skip_flag_decode(s, x0, y0, x_cb, y_cb);
-
-        x = y_cb * min_cb_width + x_cb;
-        for (y = 0; y < length; y++) {
-            memset(&s->skip_flag[x], skip_flag, length);
-            x += min_cb_width;
-        }
-        lc->cu.pred_mode = skip_flag ? MODE_SKIP : MODE_INTER;
-    }
-
-    if (SAMPLE_CTB(s->skip_flag, x_cb, y_cb)) {
-        hls_prediction_unit(s, x0, y0, cb_size, cb_size, log2_cb_size, 0);
-        intra_prediction_unit_default_value(s, x0, y0, log2_cb_size);
-
-        if (!s->sh.disable_deblocking_filter_flag)
-            ff_hevc_deblocking_boundary_strengths(s, x0, y0, log2_cb_size);
-    } else {
-        int pcm_flag = 0;
-
-        if (s->sh.slice_type != I_SLICE)
-            lc->cu.pred_mode = ff_hevc_pred_mode_decode(s);
-        if (lc->cu.pred_mode != MODE_INTRA ||
-            log2_cb_size == s->ps.sps->log2_min_cb_size) {
-            lc->cu.part_mode        = ff_hevc_part_mode_decode(s, log2_cb_size);
-            lc->cu.intra_split_flag = lc->cu.part_mode == PART_NxN &&
-                                      lc->cu.pred_mode == MODE_INTRA;
-        }
-
-        if (lc->cu.pred_mode == MODE_INTRA) {
-            if (lc->cu.part_mode == PART_2Nx2N && s->ps.sps->pcm_enabled_flag &&
-                log2_cb_size >= s->ps.sps->pcm.log2_min_pcm_cb_size &&
-                log2_cb_size <= s->ps.sps->pcm.log2_max_pcm_cb_size) {
-                pcm_flag = ff_hevc_pcm_flag_decode(s);
-            }
-            if (pcm_flag) {
-                intra_prediction_unit_default_value(s, x0, y0, log2_cb_size);
-                ret = hls_pcm_sample(s, x0, y0, log2_cb_size);
-                if (s->ps.sps->pcm.loop_filter_disable_flag)
-                    set_deblocking_bypass(s, x0, y0, log2_cb_size);
-
-                if (ret < 0)
-                    return ret;
-            } else {
-                intra_prediction_unit(s, x0, y0, log2_cb_size);
-            }
-        } else {
-            intra_prediction_unit_default_value(s, x0, y0, log2_cb_size);
-            switch (lc->cu.part_mode) {
-            case PART_2Nx2N:
-                hls_prediction_unit(s, x0, y0, cb_size, cb_size, log2_cb_size, 0);
-                break;
-            case PART_2NxN:
-                hls_prediction_unit(s, x0, y0,               cb_size, cb_size / 2, log2_cb_size, 0);
-                hls_prediction_unit(s, x0, y0 + cb_size / 2, cb_size, cb_size / 2, log2_cb_size, 1);
-                break;
-            case PART_Nx2N:
-                hls_prediction_unit(s, x0,               y0, cb_size / 2, cb_size, log2_cb_size, 0);
-                hls_prediction_unit(s, x0 + cb_size / 2, y0, cb_size / 2, cb_size, log2_cb_size, 1);
-                break;
-            case PART_2NxnU:
-                hls_prediction_unit(s, x0, y0,               cb_size, cb_size     / 4, log2_cb_size, 0);
-                hls_prediction_unit(s, x0, y0 + cb_size / 4, cb_size, cb_size * 3 / 4, log2_cb_size, 1);
-                break;
-            case PART_2NxnD:
-                hls_prediction_unit(s, x0, y0,                   cb_size, cb_size * 3 / 4, log2_cb_size, 0);
-                hls_prediction_unit(s, x0, y0 + cb_size * 3 / 4, cb_size, cb_size     / 4, log2_cb_size, 1);
-                break;
-            case PART_nLx2N:
-                hls_prediction_unit(s, x0,               y0, cb_size     / 4, cb_size, log2_cb_size, 0);
-                hls_prediction_unit(s, x0 + cb_size / 4, y0, cb_size * 3 / 4, cb_size, log2_cb_size, 1);
-                break;
-            case PART_nRx2N:
-                hls_prediction_unit(s, x0,                   y0, cb_size * 3 / 4, cb_size, log2_cb_size, 0);
-                hls_prediction_unit(s, x0 + cb_size * 3 / 4, y0, cb_size     / 4, cb_size, log2_cb_size, 1);
-                break;
-            case PART_NxN:
-                hls_prediction_unit(s, x0,               y0,               cb_size / 2, cb_size / 2, log2_cb_size, 0);
-                hls_prediction_unit(s, x0 + cb_size / 2, y0,               cb_size / 2, cb_size / 2, log2_cb_size, 1);
-                hls_prediction_unit(s, x0,               y0 + cb_size / 2, cb_size / 2, cb_size / 2, log2_cb_size, 2);
-                hls_prediction_unit(s, x0 + cb_size / 2, y0 + cb_size / 2, cb_size / 2, cb_size / 2, log2_cb_size, 3);
-                break;
-            }
-        }
-
-        if (!pcm_flag) {
-            int rqt_root_cbf = 1;
-
-            if (lc->cu.pred_mode != MODE_INTRA &&
-                !(lc->cu.part_mode == PART_2Nx2N && lc->pu.merge_flag)) {
-                rqt_root_cbf = ff_hevc_no_residual_syntax_flag_decode(s);
-            }
-            if (rqt_root_cbf) {
-                lc->cu.max_trafo_depth = lc->cu.pred_mode == MODE_INTRA ?
-                                         s->ps.sps->max_transform_hierarchy_depth_intra + lc->cu.intra_split_flag :
-                                         s->ps.sps->max_transform_hierarchy_depth_inter;
-                ret = hls_transform_tree(s, x0, y0, x0, y0, x0, y0,
-                                         log2_cb_size,
-                                         log2_cb_size, 0, 0, 0, 0);
-                if (ret < 0)
-                    return ret;
-            } else {
-                if (!s->sh.disable_deblocking_filter_flag)
-                    ff_hevc_deblocking_boundary_strengths(s, x0, y0, log2_cb_size);
-            }
-        }
-    }
-
-    if (s->ps.pps->cu_qp_delta_enabled_flag && lc->tu.is_cu_qp_delta_coded == 0)
-        ff_hevc_set_qPy(s, x0, y0, x0, y0, log2_cb_size);
-
-    x = y_cb * min_cb_width + x_cb;
-    for (y = 0; y < length; y++) {
-        memset(&s->qp_y_tab[x], lc->qp_y, length);
-        x += min_cb_width;
-    }
-
-    set_ct_depth(s, x0, y0, log2_cb_size, lc->ct.depth);
-
-    return 0;
-}
-
-static int hls_coding_quadtree(HEVCContext *s, int x0, int y0,
-                               int log2_cb_size, int cb_depth)
-{
-    HEVCLocalContext *lc = &s->HEVClc;
-    const int cb_size    = 1 << log2_cb_size;
-    int split_cu;
-
-    lc->ct.depth = cb_depth;
-    if (x0 + cb_size <= s->ps.sps->width  &&
-        y0 + cb_size <= s->ps.sps->height &&
-        log2_cb_size > s->ps.sps->log2_min_cb_size) {
-        split_cu = ff_hevc_split_coding_unit_flag_decode(s, cb_depth, x0, y0);
-    } else {
-        split_cu = (log2_cb_size > s->ps.sps->log2_min_cb_size);
-    }
-    if (s->ps.pps->cu_qp_delta_enabled_flag &&
-        log2_cb_size >= s->ps.sps->log2_ctb_size - s->ps.pps->diff_cu_qp_delta_depth) {
-        lc->tu.is_cu_qp_delta_coded = 0;
-        lc->tu.cu_qp_delta          = 0;
-    }
-
-    if (split_cu) {
-        const int cb_size_split = cb_size >> 1;
-        const int x1 = x0 + cb_size_split;
-        const int y1 = y0 + cb_size_split;
-
-        log2_cb_size--;
-        cb_depth++;
-
-#define SUBDIVIDE(x, y)                                                \
-do {                                                                   \
-    if (x < s->ps.sps->width && y < s->ps.sps->height) {                     \
-        int ret = hls_coding_quadtree(s, x, y, log2_cb_size, cb_depth);\
-        if (ret < 0)                                                   \
-            return ret;                                                \
-    }                                                                  \
-} while (0)
-
-        SUBDIVIDE(x0, y0);
-        SUBDIVIDE(x1, y0);
-        SUBDIVIDE(x0, y1);
-        SUBDIVIDE(x1, y1);
-    } else {
-        int ret = hls_coding_unit(s, x0, y0, log2_cb_size);
-        if (ret < 0)
-            return ret;
-    }
-
-    return 0;
-}
-
-static void hls_decode_neighbour(HEVCContext *s, int x_ctb, int y_ctb,
-                                 int ctb_addr_ts)
-{
-    HEVCLocalContext *lc  = &s->HEVClc;
-    int ctb_size          = 1 << s->ps.sps->log2_ctb_size;
-    int ctb_addr_rs       = s->ps.pps->ctb_addr_ts_to_rs[ctb_addr_ts];
-    int ctb_addr_in_slice = ctb_addr_rs - s->sh.slice_addr;
-
-    s->tab_slice_address[ctb_addr_rs] = s->sh.slice_addr;
-
-    if (s->ps.pps->entropy_coding_sync_enabled_flag) {
-        if (x_ctb == 0 && (y_ctb & (ctb_size - 1)) == 0)
-            lc->first_qp_group = 1;
-        lc->end_of_tiles_x = s->ps.sps->width;
-    } else if (s->ps.pps->tiles_enabled_flag) {
-        if (ctb_addr_ts && s->ps.pps->tile_id[ctb_addr_ts] != s->ps.pps->tile_id[ctb_addr_ts - 1]) {
-            int idxX = s->ps.pps->col_idxX[x_ctb >> s->ps.sps->log2_ctb_size];
-            lc->start_of_tiles_x = x_ctb;
-            lc->end_of_tiles_x   = x_ctb + (s->ps.pps->column_width[idxX] << s->ps.sps->log2_ctb_size);
-            lc->first_qp_group   = 1;
-        }
-    } else {
-        lc->end_of_tiles_x = s->ps.sps->width;
-    }
-
-    lc->end_of_tiles_y = FFMIN(y_ctb + ctb_size, s->ps.sps->height);
-
-    lc->boundary_flags = 0;
-    if (s->ps.pps->tiles_enabled_flag) {
-        if (x_ctb > 0 && s->ps.pps->tile_id[ctb_addr_ts] != s->ps.pps->tile_id[s->ps.pps->ctb_addr_rs_to_ts[ctb_addr_rs - 1]])
-            lc->boundary_flags |= BOUNDARY_LEFT_TILE;
-        if (x_ctb > 0 && s->tab_slice_address[ctb_addr_rs] != s->tab_slice_address[ctb_addr_rs - 1])
-            lc->boundary_flags |= BOUNDARY_LEFT_SLICE;
-        if (y_ctb > 0 && s->ps.pps->tile_id[ctb_addr_ts] != s->ps.pps->tile_id[s->ps.pps->ctb_addr_rs_to_ts[ctb_addr_rs - s->ps.sps->ctb_width]])
-            lc->boundary_flags |= BOUNDARY_UPPER_TILE;
-        if (y_ctb > 0 && s->tab_slice_address[ctb_addr_rs] != s->tab_slice_address[ctb_addr_rs - s->ps.sps->ctb_width])
-            lc->boundary_flags |= BOUNDARY_UPPER_SLICE;
-    } else {
-        if (!ctb_addr_in_slice)
-            lc->boundary_flags |= BOUNDARY_LEFT_SLICE;
-        if (ctb_addr_in_slice < s->ps.sps->ctb_width)
-            lc->boundary_flags |= BOUNDARY_UPPER_SLICE;
-    }
-
-    lc->ctb_left_flag = ((x_ctb > 0) && (ctb_addr_in_slice > 0) && !(lc->boundary_flags & BOUNDARY_LEFT_TILE));
-    lc->ctb_up_flag   = ((y_ctb > 0) && (ctb_addr_in_slice >= s->ps.sps->ctb_width) && !(lc->boundary_flags & BOUNDARY_UPPER_TILE));
-    lc->ctb_up_right_flag = ((y_ctb > 0)  && (ctb_addr_in_slice+1 >= s->ps.sps->ctb_width) && (s->ps.pps->tile_id[ctb_addr_ts] == s->ps.pps->tile_id[s->ps.pps->ctb_addr_rs_to_ts[ctb_addr_rs+1 - s->ps.sps->ctb_width]]));
-    lc->ctb_up_left_flag = ((x_ctb > 0) && (y_ctb > 0)  && (ctb_addr_in_slice-1 >= s->ps.sps->ctb_width) && (s->ps.pps->tile_id[ctb_addr_ts] == s->ps.pps->tile_id[s->ps.pps->ctb_addr_rs_to_ts[ctb_addr_rs-1 - s->ps.sps->ctb_width]]));
-}
-
-static int hls_slice_data(HEVCContext *s)
-{
-    int ctb_size    = 1 << s->ps.sps->log2_ctb_size;
-    int more_data   = 1;
-    int x_ctb       = 0;
-    int y_ctb       = 0;
-    int ctb_addr_ts = s->ps.pps->ctb_addr_rs_to_ts[s->sh.slice_ctb_addr_rs];
-    int ret;
-
-    while (more_data && ctb_addr_ts < s->ps.sps->ctb_size) {
-        int ctb_addr_rs = s->ps.pps->ctb_addr_ts_to_rs[ctb_addr_ts];
-
-        x_ctb = (ctb_addr_rs % ((s->ps.sps->width + ctb_size - 1) >> s->ps.sps->log2_ctb_size)) << s->ps.sps->log2_ctb_size;
-        y_ctb = (ctb_addr_rs / ((s->ps.sps->width + ctb_size - 1) >> s->ps.sps->log2_ctb_size)) << s->ps.sps->log2_ctb_size;
-        hls_decode_neighbour(s, x_ctb, y_ctb, ctb_addr_ts);
-
-        ff_hevc_cabac_init(s, ctb_addr_ts);
-
-        hls_sao_param(s, x_ctb >> s->ps.sps->log2_ctb_size, y_ctb >> s->ps.sps->log2_ctb_size);
-
-        s->deblock[ctb_addr_rs].beta_offset = s->sh.beta_offset;
-        s->deblock[ctb_addr_rs].tc_offset   = s->sh.tc_offset;
-        s->filter_slice_edges[ctb_addr_rs]  = s->sh.slice_loop_filter_across_slices_enabled_flag;
-
-        ret = hls_coding_quadtree(s, x_ctb, y_ctb, s->ps.sps->log2_ctb_size, 0);
-        if (ret < 0)
-            return ret;
-        more_data = !ff_hevc_end_of_slice_flag_decode(s);
-
-        ctb_addr_ts++;
-        ff_hevc_save_states(s, ctb_addr_ts);
-        ff_hevc_hls_filters(s, x_ctb, y_ctb, ctb_size);
-    }
-
-    if (x_ctb + ctb_size >= s->ps.sps->width &&
-        y_ctb + ctb_size >= s->ps.sps->height)
-        ff_hevc_hls_filter(s, x_ctb, y_ctb);
-
-    return ctb_addr_ts;
-}
-
-static void restore_tqb_pixels(HEVCContext *s)
-{
-    int min_pu_size = 1 << s->ps.sps->log2_min_pu_size;
-    int x, y, c_idx;
-
-    for (c_idx = 0; c_idx < 3; c_idx++) {
-        ptrdiff_t stride = s->frame->linesize[c_idx];
-        int hshift       = s->ps.sps->hshift[c_idx];
-        int vshift       = s->ps.sps->vshift[c_idx];
-        for (y = 0; y < s->ps.sps->min_pu_height; y++) {
-            for (x = 0; x < s->ps.sps->min_pu_width; x++) {
-                if (s->is_pcm[y * s->ps.sps->min_pu_width + x]) {
-                    int n;
-                    int len      = min_pu_size >> hshift;
-                    uint8_t *src = &s->frame->data[c_idx][((y << s->ps.sps->log2_min_pu_size) >> vshift) * stride + (((x << s->ps.sps->log2_min_pu_size) >> hshift) << s->ps.sps->pixel_shift)];
-                    uint8_t *dst = &s->sao_frame->data[c_idx][((y << s->ps.sps->log2_min_pu_size) >> vshift) * stride + (((x << s->ps.sps->log2_min_pu_size) >> hshift) << s->ps.sps->pixel_shift)];
-                    for (n = 0; n < (min_pu_size >> vshift); n++) {
-                        memcpy(dst, src, len);
-                        src += stride;
-                        dst += stride;
-                    }
-                }
-            }
-        }
-    }
-}
-
-static int set_side_data(HEVCContext *s)
-{
-    AVFrame *out = s->ref->frame;
-
-    if (s->sei_frame_packing_present &&
-        s->frame_packing_arrangement_type >= 3 &&
-        s->frame_packing_arrangement_type <= 5 &&
-        s->content_interpretation_type > 0 &&
-        s->content_interpretation_type < 3) {
-        AVStereo3D *stereo = av_stereo3d_create_side_data(out);
-        if (!stereo)
-            return AVERROR(ENOMEM);
-
-        switch (s->frame_packing_arrangement_type) {
-        case 3:
-            if (s->quincunx_subsampling)
-                stereo->type = AV_STEREO3D_SIDEBYSIDE_QUINCUNX;
-            else
-                stereo->type = AV_STEREO3D_SIDEBYSIDE;
-            break;
-        case 4:
-            stereo->type = AV_STEREO3D_TOPBOTTOM;
-            break;
-        case 5:
-            stereo->type = AV_STEREO3D_FRAMESEQUENCE;
-            break;
-        }
-
-        if (s->content_interpretation_type == 2)
-            stereo->flags = AV_STEREO3D_FLAG_INVERT;
-    }
-
-    if (s->sei_display_orientation_present &&
-        (s->sei_anticlockwise_rotation || s->sei_hflip || s->sei_vflip)) {
-        double angle = s->sei_anticlockwise_rotation * 360 / (double) (1 << 16);
-        AVFrameSideData *rotation = av_frame_new_side_data(out,
-                                                           AV_FRAME_DATA_DISPLAYMATRIX,
-                                                           sizeof(int32_t) * 9);
-        if (!rotation)
-            return AVERROR(ENOMEM);
-
-        av_display_rotation_set((int32_t *)rotation->data, angle);
-        av_display_matrix_flip((int32_t *)rotation->data,
-                               s->sei_hflip, s->sei_vflip);
-    }
-
-    return 0;
-}
-
-static int hevc_frame_start(HEVCContext *s)
-{
-    HEVCLocalContext *lc = &s->HEVClc;
-    int ret;
-
-    memset(s->horizontal_bs, 0, 2 * s->bs_width * (s->bs_height + 1));
-    memset(s->vertical_bs,   0, 2 * s->bs_width * (s->bs_height + 1));
-    memset(s->cbf_luma,      0, s->ps.sps->min_tb_width * s->ps.sps->min_tb_height);
-    memset(s->is_pcm,        0, s->ps.sps->min_pu_width * s->ps.sps->min_pu_height);
-
-    lc->start_of_tiles_x = 0;
-    s->is_decoded        = 0;
-    s->first_nal_type    = s->nal_unit_type;
-
-    if (s->ps.pps->tiles_enabled_flag)
-        lc->end_of_tiles_x = s->ps.pps->column_width[0] << s->ps.sps->log2_ctb_size;
-
-    ret = ff_hevc_set_new_ref(s, s->ps.sps->sao_enabled ? &s->sao_frame : &s->frame,
-                              s->poc);
-    if (ret < 0)
-        goto fail;
-
-    ret = ff_hevc_frame_rps(s);
-    if (ret < 0) {
-        av_log(s->avctx, AV_LOG_ERROR, "Error constructing the frame RPS.\n");
-        goto fail;
-    }
-
-    s->ref->frame->key_frame = IS_IRAP(s);
-
-    ret = set_side_data(s);
-    if (ret < 0)
-        goto fail;
-
-    av_frame_unref(s->output_frame);
-    ret = ff_hevc_output_frame(s, s->output_frame, 0);
-    if (ret < 0)
-        goto fail;
-
-    ff_thread_finish_setup(s->avctx);
-
-    return 0;
-
-fail:
-    if (s->ref)
-        ff_hevc_unref_frame(s, s->ref, ~0);
-    s->ref = NULL;
-    return ret;
-}
-
-static int decode_nal_unit(HEVCContext *s, const H2645NAL *nal)
-{
-    HEVCLocalContext *lc = &s->HEVClc;
-    GetBitContext *gb    = &lc->gb;
-    int ctb_addr_ts, ret;
-
-    *gb              = nal->gb;
-    s->nal_unit_type = nal->type;
-    s->temporal_id   = nal->temporal_id;
-
-    switch (s->nal_unit_type) {
-    case NAL_VPS:
-        ret = ff_hevc_decode_nal_vps(gb, s->avctx, &s->ps);
-        if (ret < 0)
-            goto fail;
-        break;
-    case NAL_SPS:
-        ret = ff_hevc_decode_nal_sps(gb, s->avctx, &s->ps,
-                                     s->apply_defdispwin);
-        if (ret < 0)
-            goto fail;
-        break;
-    case NAL_PPS:
-        ret = ff_hevc_decode_nal_pps(gb, s->avctx, &s->ps);
-        if (ret < 0)
-            goto fail;
-        break;
-    case NAL_SEI_PREFIX:
-    case NAL_SEI_SUFFIX:
-        ret = ff_hevc_decode_nal_sei(s);
-        if (ret < 0)
-            goto fail;
-        break;
-    case NAL_TRAIL_R:
-    case NAL_TRAIL_N:
-    case NAL_TSA_N:
-    case NAL_TSA_R:
-    case NAL_STSA_N:
-    case NAL_STSA_R:
-    case NAL_BLA_W_LP:
-    case NAL_BLA_W_RADL:
-    case NAL_BLA_N_LP:
-    case NAL_IDR_W_RADL:
-    case NAL_IDR_N_LP:
-    case NAL_CRA_NUT:
-    case NAL_RADL_N:
-    case NAL_RADL_R:
-    case NAL_RASL_N:
-    case NAL_RASL_R:
-        ret = hls_slice_header(s);
-        if (ret < 0)
-            return ret;
-
-        if (s->max_ra == INT_MAX) {
-            if (s->nal_unit_type == NAL_CRA_NUT || IS_BLA(s)) {
-                s->max_ra = s->poc;
-            } else {
-                if (IS_IDR(s))
-                    s->max_ra = INT_MIN;
-            }
-        }
-
-        if ((s->nal_unit_type == NAL_RASL_R || s->nal_unit_type == NAL_RASL_N) &&
-            s->poc <= s->max_ra) {
-            s->is_decoded = 0;
-            break;
-        } else {
-            if (s->nal_unit_type == NAL_RASL_R && s->poc > s->max_ra)
-                s->max_ra = INT_MIN;
-        }
-
-        if (s->sh.first_slice_in_pic_flag) {
-            ret = hevc_frame_start(s);
-            if (ret < 0)
-                return ret;
-        } else if (!s->ref) {
-            av_log(s->avctx, AV_LOG_ERROR, "First slice in a frame missing.\n");
-            goto fail;
-        }
-
-        if (s->nal_unit_type != s->first_nal_type) {
-            av_log(s->avctx, AV_LOG_ERROR,
-                   "Non-matching NAL types of the VCL NALUs: %d %d\n",
-                   s->first_nal_type, s->nal_unit_type);
-            return AVERROR_INVALIDDATA;
-        }
-
-        if (!s->sh.dependent_slice_segment_flag &&
-            s->sh.slice_type != I_SLICE) {
-            ret = ff_hevc_slice_rpl(s);
-            if (ret < 0) {
-                av_log(s->avctx, AV_LOG_WARNING,
-                       "Error constructing the reference lists for the current slice.\n");
-                goto fail;
-            }
-        }
-
-        if (s->sh.first_slice_in_pic_flag && s->avctx->hwaccel) {
-            ret = s->avctx->hwaccel->start_frame(s->avctx, NULL, 0);
-            if (ret < 0)
-                goto fail;
-        }
-
-        if (s->avctx->hwaccel) {
-            ret = s->avctx->hwaccel->decode_slice(s->avctx, nal->raw_data, nal->raw_size);
-            if (ret < 0)
-                goto fail;
-        } else {
-            ctb_addr_ts = hls_slice_data(s);
-            if (ctb_addr_ts >= (s->ps.sps->ctb_width * s->ps.sps->ctb_height)) {
-                s->is_decoded = 1;
-                if ((s->ps.pps->transquant_bypass_enable_flag ||
-                     (s->ps.sps->pcm.loop_filter_disable_flag && s->ps.sps->pcm_enabled_flag)) &&
-                    s->ps.sps->sao_enabled)
-                    restore_tqb_pixels(s);
-            }
-
-            if (ctb_addr_ts < 0) {
-                ret = ctb_addr_ts;
-                goto fail;
-            }
-        }
-        break;
-    case NAL_EOS_NUT:
-    case NAL_EOB_NUT:
-        s->seq_decode = (s->seq_decode + 1) & 0xff;
-        s->max_ra     = INT_MAX;
-        break;
-    case NAL_AUD:
-    case NAL_FD_NUT:
-        break;
-    default:
-        av_log(s->avctx, AV_LOG_INFO,
-               "Skipping NAL unit %d\n", s->nal_unit_type);
-    }
-
-    return 0;
-fail:
-    if (s->avctx->err_recognition & AV_EF_EXPLODE)
-        return ret;
-    return 0;
-}
-
-static int decode_nal_units(HEVCContext *s, const uint8_t *buf, int length)
-{
-    int i, ret = 0;
-
-    s->ref = NULL;
-    s->eos = 0;
-
-    /* split the input packet into NAL units, so we know the upper bound on the
-     * number of slices in the frame */
-    ret = ff_h2645_packet_split(&s->pkt, buf, length, s->avctx, s->is_nalff,
-                                s->nal_length_size, s->avctx->codec_id);
-    if (ret < 0) {
-        av_log(s->avctx, AV_LOG_ERROR,
-               "Error splitting the input into NAL units.\n");
-        return ret;
-    }
-
-    for (i = 0; i < s->pkt.nb_nals; i++) {
-        if (s->pkt.nals[i].type == NAL_EOB_NUT ||
-            s->pkt.nals[i].type == NAL_EOS_NUT)
-            s->eos = 1;
-    }
-
-    /* decode the NAL units */
-    for (i = 0; i < s->pkt.nb_nals; i++) {
-        ret = decode_nal_unit(s, &s->pkt.nals[i]);
-        if (ret < 0) {
-            av_log(s->avctx, AV_LOG_WARNING,
-                   "Error parsing NAL unit #%d.\n", i);
-            goto fail;
-        }
-    }
-
-fail:
-    if (s->ref)
-        ff_thread_report_progress(&s->ref->tf, INT_MAX, 0);
-
-    return ret;
-}
-
-static void print_md5(void *log_ctx, int level, uint8_t md5[16])
-{
-    int i;
-    for (i = 0; i < 16; i++)
-        av_log(log_ctx, level, "%02"PRIx8, md5[i]);
-}
-
-static int verify_md5(HEVCContext *s, AVFrame *frame)
-{
-    const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(frame->format);
-    int pixel_shift;
-    int i, j;
-
-    if (!desc)
-        return AVERROR(EINVAL);
-
-    pixel_shift = desc->comp[0].depth > 8;
-
-    av_log(s->avctx, AV_LOG_DEBUG, "Verifying checksum for frame with POC %d: ",
-           s->poc);
-
-    /* the checksums are LE, so we have to byteswap for >8bpp formats
-     * on BE arches */
-#if HAVE_BIGENDIAN
-    if (pixel_shift && !s->checksum_buf) {
-        av_fast_malloc(&s->checksum_buf, &s->checksum_buf_size,
-                       FFMAX3(frame->linesize[0], frame->linesize[1],
-                              frame->linesize[2]));
-        if (!s->checksum_buf)
-            return AVERROR(ENOMEM);
-    }
-#endif
-
-    for (i = 0; frame->data[i]; i++) {
-        int width  = s->avctx->coded_width;
-        int height = s->avctx->coded_height;
-        int w = (i == 1 || i == 2) ? (width  >> desc->log2_chroma_w) : width;
-        int h = (i == 1 || i == 2) ? (height >> desc->log2_chroma_h) : height;
-        uint8_t md5[16];
-
-        av_md5_init(s->md5_ctx);
-        for (j = 0; j < h; j++) {
-            const uint8_t *src = frame->data[i] + j * frame->linesize[i];
-#if HAVE_BIGENDIAN
-            if (pixel_shift) {
-                s->bdsp.bswap16_buf((uint16_t *) s->checksum_buf,
-                                    (const uint16_t *) src, w);
-                src = s->checksum_buf;
-            }
-#endif
-            av_md5_update(s->md5_ctx, src, w << pixel_shift);
-        }
-        av_md5_final(s->md5_ctx, md5);
-
-        if (!memcmp(md5, s->md5[i], 16)) {
-            av_log   (s->avctx, AV_LOG_DEBUG, "plane %d - correct ", i);
-            print_md5(s->avctx, AV_LOG_DEBUG, md5);
-            av_log   (s->avctx, AV_LOG_DEBUG, "; ");
-        } else {
-            av_log   (s->avctx, AV_LOG_ERROR, "mismatching checksum of plane %d - ", i);
-            print_md5(s->avctx, AV_LOG_ERROR, md5);
-            av_log   (s->avctx, AV_LOG_ERROR, " != ");
-            print_md5(s->avctx, AV_LOG_ERROR, s->md5[i]);
-            av_log   (s->avctx, AV_LOG_ERROR, "\n");
-            return AVERROR_INVALIDDATA;
-        }
-    }
-
-    av_log(s->avctx, AV_LOG_DEBUG, "\n");
-
-    return 0;
-}
-
-static int hevc_decode_frame(AVCodecContext *avctx, void *data, int *got_output,
-                             AVPacket *avpkt)
-{
-    int ret;
-    HEVCContext *s = avctx->priv_data;
-
-    if (!avpkt->size) {
-        ret = ff_hevc_output_frame(s, data, 1);
-        if (ret < 0)
-            return ret;
-
-        *got_output = ret;
-        return 0;
-    }
-
-    s->ref = NULL;
-    ret    = decode_nal_units(s, avpkt->data, avpkt->size);
-    if (ret < 0)
-        return ret;
-
-    if (avctx->hwaccel) {
-        if (s->ref && avctx->hwaccel->end_frame(avctx) < 0)
-            av_log(avctx, AV_LOG_ERROR,
-                   "hardware accelerator failed to decode picture\n");
-    } else {
-        /* verify the SEI checksum */
-        if (avctx->err_recognition & AV_EF_CRCCHECK && s->is_decoded &&
-            s->is_md5) {
-            ret = verify_md5(s, s->ref->frame);
-            if (ret < 0 && avctx->err_recognition & AV_EF_EXPLODE) {
-                ff_hevc_unref_frame(s, s->ref, ~0);
-                return ret;
-            }
-        }
-    }
-    s->is_md5 = 0;
-
-    if (s->is_decoded) {
-        av_log(avctx, AV_LOG_DEBUG, "Decoded frame with POC %d.\n", s->poc);
-        s->is_decoded = 0;
-    }
-
-    if (s->output_frame->buf[0]) {
-        av_frame_move_ref(data, s->output_frame);
-        *got_output = 1;
-    }
-
-    return avpkt->size;
-}
-
-static int hevc_ref_frame(HEVCContext *s, HEVCFrame *dst, HEVCFrame *src)
-{
-    int ret = ff_thread_ref_frame(&dst->tf, &src->tf);
-    if (ret < 0)
-        return ret;
-
-    dst->tab_mvf_buf = av_buffer_ref(src->tab_mvf_buf);
-    if (!dst->tab_mvf_buf)
-        goto fail;
-    dst->tab_mvf = src->tab_mvf;
-
-    dst->rpl_tab_buf = av_buffer_ref(src->rpl_tab_buf);
-    if (!dst->rpl_tab_buf)
-        goto fail;
-    dst->rpl_tab = src->rpl_tab;
-
-    dst->rpl_buf = av_buffer_ref(src->rpl_buf);
-    if (!dst->rpl_buf)
-        goto fail;
-
-    dst->poc        = src->poc;
-    dst->ctb_count  = src->ctb_count;
-    dst->window     = src->window;
-    dst->flags      = src->flags;
-    dst->sequence   = src->sequence;
-
-    if (src->hwaccel_picture_private) {
-        dst->hwaccel_priv_buf = av_buffer_ref(src->hwaccel_priv_buf);
-        if (!dst->hwaccel_priv_buf)
-            goto fail;
-        dst->hwaccel_picture_private = dst->hwaccel_priv_buf->data;
-    }
-
-    return 0;
-fail:
-    ff_hevc_unref_frame(s, dst, ~0);
-    return AVERROR(ENOMEM);
-}
-
-static av_cold int hevc_decode_free(AVCodecContext *avctx)
-{
-    HEVCContext       *s = avctx->priv_data;
-    int i;
-
-    pic_arrays_free(s);
-
-    av_freep(&s->md5_ctx);
-
-    av_frame_free(&s->tmp_frame);
-    av_frame_free(&s->output_frame);
-
-    for (i = 0; i < FF_ARRAY_ELEMS(s->DPB); i++) {
-        ff_hevc_unref_frame(s, &s->DPB[i], ~0);
-        av_frame_free(&s->DPB[i].frame);
-    }
-
-    for (i = 0; i < FF_ARRAY_ELEMS(s->ps.vps_list); i++)
-        av_buffer_unref(&s->ps.vps_list[i]);
-    for (i = 0; i < FF_ARRAY_ELEMS(s->ps.sps_list); i++)
-        av_buffer_unref(&s->ps.sps_list[i]);
-    for (i = 0; i < FF_ARRAY_ELEMS(s->ps.pps_list); i++)
-        av_buffer_unref(&s->ps.pps_list[i]);
-
-    ff_h2645_packet_uninit(&s->pkt);
-
-    return 0;
-}
-
-static av_cold int hevc_init_context(AVCodecContext *avctx)
-{
-    HEVCContext *s = avctx->priv_data;
-    int i;
-
-    s->avctx = avctx;
-
-    s->tmp_frame = av_frame_alloc();
-    if (!s->tmp_frame)
-        goto fail;
-
-    s->output_frame = av_frame_alloc();
-    if (!s->output_frame)
-        goto fail;
-
-    for (i = 0; i < FF_ARRAY_ELEMS(s->DPB); i++) {
-        s->DPB[i].frame = av_frame_alloc();
-        if (!s->DPB[i].frame)
-            goto fail;
-        s->DPB[i].tf.f = s->DPB[i].frame;
-    }
-
-    s->max_ra = INT_MAX;
-
-    s->md5_ctx = av_md5_alloc();
-    if (!s->md5_ctx)
-        goto fail;
-
-    ff_bswapdsp_init(&s->bdsp);
-
-    s->context_initialized = 1;
-
-    return 0;
-
-fail:
-    hevc_decode_free(avctx);
-    return AVERROR(ENOMEM);
-}
-
-static int hevc_update_thread_context(AVCodecContext *dst,
-                                      const AVCodecContext *src)
-{
-    HEVCContext *s  = dst->priv_data;
-    HEVCContext *s0 = src->priv_data;
-    int i, ret;
-
-    if (!s->context_initialized) {
-        ret = hevc_init_context(dst);
-        if (ret < 0)
-            return ret;
-    }
-
-    for (i = 0; i < FF_ARRAY_ELEMS(s->DPB); i++) {
-        ff_hevc_unref_frame(s, &s->DPB[i], ~0);
-        if (s0->DPB[i].frame->buf[0]) {
-            ret = hevc_ref_frame(s, &s->DPB[i], &s0->DPB[i]);
-            if (ret < 0)
-                return ret;
-        }
-    }
-
-    for (i = 0; i < FF_ARRAY_ELEMS(s->ps.vps_list); i++) {
-        av_buffer_unref(&s->ps.vps_list[i]);
-        if (s0->ps.vps_list[i]) {
-            s->ps.vps_list[i] = av_buffer_ref(s0->ps.vps_list[i]);
-            if (!s->ps.vps_list[i])
-                return AVERROR(ENOMEM);
-        }
-    }
-
-    for (i = 0; i < FF_ARRAY_ELEMS(s->ps.sps_list); i++) {
-        av_buffer_unref(&s->ps.sps_list[i]);
-        if (s0->ps.sps_list[i]) {
-            s->ps.sps_list[i] = av_buffer_ref(s0->ps.sps_list[i]);
-            if (!s->ps.sps_list[i])
-                return AVERROR(ENOMEM);
-        }
-    }
-
-    for (i = 0; i < FF_ARRAY_ELEMS(s->ps.pps_list); i++) {
-        av_buffer_unref(&s->ps.pps_list[i]);
-        if (s0->ps.pps_list[i]) {
-            s->ps.pps_list[i] = av_buffer_ref(s0->ps.pps_list[i]);
-            if (!s->ps.pps_list[i])
-                return AVERROR(ENOMEM);
-        }
-    }
-
-    if (s->ps.sps != s0->ps.sps)
-        ret = set_sps(s, s0->ps.sps);
-
-    s->seq_decode = s0->seq_decode;
-    s->seq_output = s0->seq_output;
-    s->pocTid0    = s0->pocTid0;
-    s->max_ra     = s0->max_ra;
-
-    s->is_nalff        = s0->is_nalff;
-    s->nal_length_size = s0->nal_length_size;
-
-    if (s0->eos) {
-        s->seq_decode = (s->seq_decode + 1) & 0xff;
-        s->max_ra = INT_MAX;
-    }
-
-    return 0;
-}
-
-static int hevc_decode_extradata(HEVCContext *s)
-{
-    AVCodecContext *avctx = s->avctx;
-    GetByteContext gb;
-    int ret, i;
-
-    bytestream2_init(&gb, avctx->extradata, avctx->extradata_size);
-
-    if (avctx->extradata_size > 3 &&
-        (avctx->extradata[0] || avctx->extradata[1] ||
-         avctx->extradata[2] > 1)) {
-        /* It seems the extradata is encoded as hvcC format.
-         * Temporarily, we support configurationVersion==0 until 14496-15 3rd
-         * is finalized. When finalized, configurationVersion will be 1 and we
-         * can recognize hvcC by checking if avctx->extradata[0]==1 or not. */
-        int i, j, num_arrays, nal_len_size;
-
-        s->is_nalff = 1;
-
-        bytestream2_skip(&gb, 21);
-        nal_len_size = (bytestream2_get_byte(&gb) & 3) + 1;
-        num_arrays   = bytestream2_get_byte(&gb);
-
-        /* nal units in the hvcC always have length coded with 2 bytes,
-         * so put a fake nal_length_size = 2 while parsing them */
-        s->nal_length_size = 2;
-
-        /* Decode nal units from hvcC. */
-        for (i = 0; i < num_arrays; i++) {
-            int type = bytestream2_get_byte(&gb) & 0x3f;
-            int cnt  = bytestream2_get_be16(&gb);
-
-            for (j = 0; j < cnt; j++) {
-                // +2 for the nal size field
-                int nalsize = bytestream2_peek_be16(&gb) + 2;
-                if (bytestream2_get_bytes_left(&gb) < nalsize) {
-                    av_log(s->avctx, AV_LOG_ERROR,
-                           "Invalid NAL unit size in extradata.\n");
-                    return AVERROR_INVALIDDATA;
-                }
-
-                ret = decode_nal_units(s, gb.buffer, nalsize);
-                if (ret < 0) {
-                    av_log(avctx, AV_LOG_ERROR,
-                           "Decoding nal unit %d %d from hvcC failed\n",
-                           type, i);
-                    return ret;
-                }
-                bytestream2_skip(&gb, nalsize);
-            }
-        }
-
-        /* Now store right nal length size, that will be used to parse
-         * all other nals */
-        s->nal_length_size = nal_len_size;
-    } else {
-        s->is_nalff = 0;
-        ret = decode_nal_units(s, avctx->extradata, avctx->extradata_size);
-        if (ret < 0)
-            return ret;
-    }
-
-    /* export stream parameters from the first SPS */
-    for (i = 0; i < FF_ARRAY_ELEMS(s->ps.sps_list); i++) {
-        if (s->ps.sps_list[i]) {
-            const HEVCSPS *sps = (const HEVCSPS*)s->ps.sps_list[i]->data;
-            export_stream_params(s->avctx, &s->ps, sps);
-            break;
-        }
-    }
-
-    return 0;
-}
-
-static av_cold int hevc_decode_init(AVCodecContext *avctx)
-{
-    HEVCContext *s = avctx->priv_data;
-    int ret;
-
-    avctx->internal->allocate_progress = 1;
-
-    ret = hevc_init_context(avctx);
-    if (ret < 0)
-        return ret;
-
-    if (avctx->extradata_size > 0 && avctx->extradata) {
-        ret = hevc_decode_extradata(s);
-        if (ret < 0) {
-            hevc_decode_free(avctx);
-            return ret;
-        }
-    }
-
-    return 0;
-}
-
-static av_cold int hevc_init_thread_copy(AVCodecContext *avctx)
-{
-    HEVCContext *s = avctx->priv_data;
-    int ret;
-
-    memset(s, 0, sizeof(*s));
-
-    ret = hevc_init_context(avctx);
-    if (ret < 0)
-        return ret;
-
-    return 0;
-}
-
-static void hevc_decode_flush(AVCodecContext *avctx)
-{
-    HEVCContext *s = avctx->priv_data;
-    ff_hevc_flush_dpb(s);
-    s->max_ra = INT_MAX;
-}
-
-#define OFFSET(x) offsetof(HEVCContext, x)
-#define PAR (AV_OPT_FLAG_DECODING_PARAM | AV_OPT_FLAG_VIDEO_PARAM)
-
-static const AVOption options[] = {
-    { "apply_defdispwin", "Apply default display window from VUI", OFFSET(apply_defdispwin),
-        AV_OPT_TYPE_INT, {.i64 = 0}, 0, 1, PAR },
-    { NULL },
-};
-
-static const AVClass hevc_decoder_class = {
-    .class_name = "HEVC decoder",
-    .item_name  = av_default_item_name,
-    .option     = options,
-    .version    = LIBAVUTIL_VERSION_INT,
-};
-
-AVCodec ff_hevc_decoder = {
-    .name                  = "hevc",
-    .long_name             = NULL_IF_CONFIG_SMALL("HEVC (High Efficiency Video Coding)"),
-    .type                  = AVMEDIA_TYPE_VIDEO,
-    .id                    = AV_CODEC_ID_HEVC,
-    .priv_data_size        = sizeof(HEVCContext),
-    .priv_class            = &hevc_decoder_class,
-    .init                  = hevc_decode_init,
-    .close                 = hevc_decode_free,
-    .decode                = hevc_decode_frame,
-    .flush                 = hevc_decode_flush,
-    .update_thread_context = hevc_update_thread_context,
-    .init_thread_copy      = hevc_init_thread_copy,
-    .capabilities          = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_DELAY |
-                             AV_CODEC_CAP_FRAME_THREADS,
-    .profiles              = NULL_IF_CONFIG_SMALL(ff_hevc_profiles),
-};
diff --git a/libavcodec/hevc.h b/libavcodec/hevc.h
deleted file mode 100644 (file)
index d15af71..0000000
+++ /dev/null
@@ -1,1016 +0,0 @@
-/*
- * HEVC video decoder
- *
- * Copyright (C) 2012 - 2013 Guillaume Martres
- *
- * This file is part of Libav.
- *
- * Libav is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * Libav is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with Libav; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#ifndef AVCODEC_HEVC_H
-#define AVCODEC_HEVC_H
-
-#include <stddef.h>
-#include <stdint.h>
-
-#include "libavutil/buffer.h"
-#include "libavutil/md5.h"
-
-#include "avcodec.h"
-#include "bswapdsp.h"
-#include "cabac.h"
-#include "get_bits.h"
-#include "h2645_parse.h"
-#include "hevcdsp.h"
-#include "internal.h"
-#include "thread.h"
-#include "videodsp.h"
-
-#define MAX_DPB_SIZE 16 // A.4.1
-#define MAX_REFS 16
-
-/**
- * 7.4.2.1
- */
-#define MAX_SUB_LAYERS 7
-#define MAX_VPS_COUNT 16
-#define MAX_SPS_COUNT 32
-#define MAX_PPS_COUNT 256
-#define MAX_SHORT_TERM_RPS_COUNT 64
-#define MAX_CU_SIZE 128
-
-//TODO: check if this is really the maximum
-#define MAX_TRANSFORM_DEPTH 5
-
-#define MAX_TB_SIZE 32
-#define MAX_PB_SIZE 64
-#define MAX_LOG2_CTB_SIZE 6
-#define MAX_QP 51
-#define DEFAULT_INTRA_TC_OFFSET 2
-
-#define HEVC_CONTEXTS 183
-
-#define MRG_MAX_NUM_CANDS     5
-
-#define L0 0
-#define L1 1
-
-#define EPEL_EXTRA_BEFORE 1
-#define EPEL_EXTRA_AFTER  2
-#define EPEL_EXTRA        3
-
-#define EDGE_EMU_BUFFER_STRIDE 80
-
-/**
- * Value of the luma sample at position (x, y) in the 2D array tab.
- */
-#define SAMPLE(tab, x, y) ((tab)[(y) * s->sps->width + (x)])
-#define SAMPLE_CTB(tab, x, y) ((tab)[(y) * min_cb_width + (x)])
-
-#define IS_IDR(s) (s->nal_unit_type == NAL_IDR_W_RADL || s->nal_unit_type == NAL_IDR_N_LP)
-#define IS_BLA(s) (s->nal_unit_type == NAL_BLA_W_RADL || s->nal_unit_type == NAL_BLA_W_LP || \
-                   s->nal_unit_type == NAL_BLA_N_LP)
-#define IS_IRAP(s) (s->nal_unit_type >= 16 && s->nal_unit_type <= 23)
-
-#define FFUDIV(a,b) (((a) > 0 ? (a) : (a) - (b) + 1) / (b))
-#define FFUMOD(a,b) ((a) - (b) * FFUDIV(a,b))
-
-/**
- * Table 7-3: NAL unit type codes
- */
-enum NALUnitType {
-    NAL_TRAIL_N    = 0,
-    NAL_TRAIL_R    = 1,
-    NAL_TSA_N      = 2,
-    NAL_TSA_R      = 3,
-    NAL_STSA_N     = 4,
-    NAL_STSA_R     = 5,
-    NAL_RADL_N     = 6,
-    NAL_RADL_R     = 7,
-    NAL_RASL_N     = 8,
-    NAL_RASL_R     = 9,
-    NAL_BLA_W_LP   = 16,
-    NAL_BLA_W_RADL = 17,
-    NAL_BLA_N_LP   = 18,
-    NAL_IDR_W_RADL = 19,
-    NAL_IDR_N_LP   = 20,
-    NAL_CRA_NUT    = 21,
-    NAL_VPS        = 32,
-    NAL_SPS        = 33,
-    NAL_PPS        = 34,
-    NAL_AUD        = 35,
-    NAL_EOS_NUT    = 36,
-    NAL_EOB_NUT    = 37,
-    NAL_FD_NUT     = 38,
-    NAL_SEI_PREFIX = 39,
-    NAL_SEI_SUFFIX = 40,
-};
-
-enum RPSType {
-    ST_CURR_BEF = 0,
-    ST_CURR_AFT,
-    ST_FOLL,
-    LT_CURR,
-    LT_FOLL,
-    NB_RPS_TYPE,
-};
-
-enum SliceType {
-    B_SLICE = 0,
-    P_SLICE = 1,
-    I_SLICE = 2,
-};
-
-enum SyntaxElement {
-    SAO_MERGE_FLAG = 0,
-    SAO_TYPE_IDX,
-    SAO_EO_CLASS,
-    SAO_BAND_POSITION,
-    SAO_OFFSET_ABS,
-    SAO_OFFSET_SIGN,
-    END_OF_SLICE_FLAG,
-    SPLIT_CODING_UNIT_FLAG,
-    CU_TRANSQUANT_BYPASS_FLAG,
-    SKIP_FLAG,
-    CU_QP_DELTA,
-    PRED_MODE_FLAG,
-    PART_MODE,
-    PCM_FLAG,
-    PREV_INTRA_LUMA_PRED_FLAG,
-    MPM_IDX,
-    REM_INTRA_LUMA_PRED_MODE,
-    INTRA_CHROMA_PRED_MODE,
-    MERGE_FLAG,
-    MERGE_IDX,
-    INTER_PRED_IDC,
-    REF_IDX_L0,
-    REF_IDX_L1,
-    ABS_MVD_GREATER0_FLAG,
-    ABS_MVD_GREATER1_FLAG,
-    ABS_MVD_MINUS2,
-    MVD_SIGN_FLAG,
-    MVP_LX_FLAG,
-    NO_RESIDUAL_DATA_FLAG,
-    SPLIT_TRANSFORM_FLAG,
-    CBF_LUMA,
-    CBF_CB_CR,
-    TRANSFORM_SKIP_FLAG,
-    LAST_SIGNIFICANT_COEFF_X_PREFIX,
-    LAST_SIGNIFICANT_COEFF_Y_PREFIX,
-    LAST_SIGNIFICANT_COEFF_X_SUFFIX,
-    LAST_SIGNIFICANT_COEFF_Y_SUFFIX,
-    SIGNIFICANT_COEFF_GROUP_FLAG,
-    SIGNIFICANT_COEFF_FLAG,
-    COEFF_ABS_LEVEL_GREATER1_FLAG,
-    COEFF_ABS_LEVEL_GREATER2_FLAG,
-    COEFF_ABS_LEVEL_REMAINING,
-    COEFF_SIGN_FLAG,
-};
-
-enum PartMode {
-    PART_2Nx2N = 0,
-    PART_2NxN  = 1,
-    PART_Nx2N  = 2,
-    PART_NxN   = 3,
-    PART_2NxnU = 4,
-    PART_2NxnD = 5,
-    PART_nLx2N = 6,
-    PART_nRx2N = 7,
-};
-
-enum PredMode {
-    MODE_INTER = 0,
-    MODE_INTRA,
-    MODE_SKIP,
-};
-
-enum InterPredIdc {
-    PRED_L0 = 0,
-    PRED_L1,
-    PRED_BI,
-};
-
-enum IntraPredMode {
-    INTRA_PLANAR = 0,
-    INTRA_DC,
-    INTRA_ANGULAR_2,
-    INTRA_ANGULAR_3,
-    INTRA_ANGULAR_4,
-    INTRA_ANGULAR_5,
-    INTRA_ANGULAR_6,
-    INTRA_ANGULAR_7,
-    INTRA_ANGULAR_8,
-    INTRA_ANGULAR_9,
-    INTRA_ANGULAR_10,
-    INTRA_ANGULAR_11,
-    INTRA_ANGULAR_12,
-    INTRA_ANGULAR_13,
-    INTRA_ANGULAR_14,
-    INTRA_ANGULAR_15,
-    INTRA_ANGULAR_16,
-    INTRA_ANGULAR_17,
-    INTRA_ANGULAR_18,
-    INTRA_ANGULAR_19,
-    INTRA_ANGULAR_20,
-    INTRA_ANGULAR_21,
-    INTRA_ANGULAR_22,
-    INTRA_ANGULAR_23,
-    INTRA_ANGULAR_24,
-    INTRA_ANGULAR_25,
-    INTRA_ANGULAR_26,
-    INTRA_ANGULAR_27,
-    INTRA_ANGULAR_28,
-    INTRA_ANGULAR_29,
-    INTRA_ANGULAR_30,
-    INTRA_ANGULAR_31,
-    INTRA_ANGULAR_32,
-    INTRA_ANGULAR_33,
-    INTRA_ANGULAR_34,
-};
-
-enum SAOType {
-    SAO_NOT_APPLIED = 0,
-    SAO_BAND,
-    SAO_EDGE,
-};
-
-enum SAOEOClass {
-    SAO_EO_HORIZ = 0,
-    SAO_EO_VERT,
-    SAO_EO_135D,
-    SAO_EO_45D,
-};
-
-enum ScanType {
-    SCAN_DIAG = 0,
-    SCAN_HORIZ,
-    SCAN_VERT,
-};
-
-typedef struct ShortTermRPS {
-    unsigned int num_negative_pics;
-    int num_delta_pocs;
-    int rps_idx_num_delta_pocs;
-    int32_t delta_poc[32];
-    uint8_t used[32];
-} ShortTermRPS;
-
-typedef struct LongTermRPS {
-    int     poc[32];
-    uint8_t used[32];
-    uint8_t nb_refs;
-} LongTermRPS;
-
-typedef struct RefPicList {
-    struct HEVCFrame *ref[MAX_REFS];
-    int list[MAX_REFS];
-    int isLongTerm[MAX_REFS];
-    int nb_refs;
-} RefPicList;
-
-typedef struct RefPicListTab {
-    RefPicList refPicList[2];
-} RefPicListTab;
-
-typedef struct HEVCWindow {
-    unsigned int left_offset;
-    unsigned int right_offset;
-    unsigned int top_offset;
-    unsigned int bottom_offset;
-} HEVCWindow;
-
-typedef struct VUI {
-    AVRational sar;
-
-    int overscan_info_present_flag;
-    int overscan_appropriate_flag;
-
-    int video_signal_type_present_flag;
-    int video_format;
-    int video_full_range_flag;
-    int colour_description_present_flag;
-    uint8_t colour_primaries;
-    uint8_t transfer_characteristic;
-    uint8_t matrix_coeffs;
-
-    int chroma_loc_info_present_flag;
-    int chroma_sample_loc_type_top_field;
-    int chroma_sample_loc_type_bottom_field;
-    int neutra_chroma_indication_flag;
-
-    int field_seq_flag;
-    int frame_field_info_present_flag;
-
-    int default_display_window_flag;
-    HEVCWindow def_disp_win;
-
-    int vui_timing_info_present_flag;
-    uint32_t vui_num_units_in_tick;
-    uint32_t vui_time_scale;
-    int vui_poc_proportional_to_timing_flag;
-    int vui_num_ticks_poc_diff_one_minus1;
-    int vui_hrd_parameters_present_flag;
-
-    int bitstream_restriction_flag;
-    int tiles_fixed_structure_flag;
-    int motion_vectors_over_pic_boundaries_flag;
-    int restricted_ref_pic_lists_flag;
-    int min_spatial_segmentation_idc;
-    int max_bytes_per_pic_denom;
-    int max_bits_per_min_cu_denom;
-    int log2_max_mv_length_horizontal;
-    int log2_max_mv_length_vertical;
-} VUI;
-
-typedef struct PTLCommon {
-    uint8_t profile_space;
-    uint8_t tier_flag;
-    uint8_t profile_idc;
-    uint8_t profile_compatibility_flag[32];
-    uint8_t level_idc;
-    uint8_t progressive_source_flag;
-    uint8_t interlaced_source_flag;
-    uint8_t non_packed_constraint_flag;
-    uint8_t frame_only_constraint_flag;
-} PTLCommon;
-
-typedef struct PTL {
-    PTLCommon general_ptl;
-    PTLCommon sub_layer_ptl[MAX_SUB_LAYERS];
-
-    uint8_t sub_layer_profile_present_flag[MAX_SUB_LAYERS];
-    uint8_t sub_layer_level_present_flag[MAX_SUB_LAYERS];
-} PTL;
-
-typedef struct HEVCVPS {
-    uint8_t vps_temporal_id_nesting_flag;
-    int vps_max_layers;
-    int vps_max_sub_layers; ///< vps_max_temporal_layers_minus1 + 1
-
-    PTL ptl;
-    int vps_sub_layer_ordering_info_present_flag;
-    unsigned int vps_max_dec_pic_buffering[MAX_SUB_LAYERS];
-    unsigned int vps_num_reorder_pics[MAX_SUB_LAYERS];
-    unsigned int vps_max_latency_increase[MAX_SUB_LAYERS];
-    int vps_max_layer_id;
-    int vps_num_layer_sets; ///< vps_num_layer_sets_minus1 + 1
-    uint8_t vps_timing_info_present_flag;
-    uint32_t vps_num_units_in_tick;
-    uint32_t vps_time_scale;
-    uint8_t vps_poc_proportional_to_timing_flag;
-    int vps_num_ticks_poc_diff_one; ///< vps_num_ticks_poc_diff_one_minus1 + 1
-    int vps_num_hrd_parameters;
-} HEVCVPS;
-
-typedef struct ScalingList {
-    /* This is a little wasteful, since sizeID 0 only needs 8 coeffs,
-     * and size ID 3 only has 2 arrays, not 6. */
-    uint8_t sl[4][6][64];
-    uint8_t sl_dc[2][6];
-} ScalingList;
-
-typedef struct HEVCSPS {
-    int vps_id;
-    int chroma_format_idc;
-    uint8_t separate_colour_plane_flag;
-
-    ///< output (i.e. cropped) values
-    int output_width, output_height;
-    HEVCWindow output_window;
-
-    HEVCWindow pic_conf_win;
-
-    int bit_depth;
-    int pixel_shift;
-    enum AVPixelFormat pix_fmt;
-
-    unsigned int log2_max_poc_lsb;
-    int pcm_enabled_flag;
-
-    int max_sub_layers;
-    struct {
-        int max_dec_pic_buffering;
-        int num_reorder_pics;
-        int max_latency_increase;
-    } temporal_layer[MAX_SUB_LAYERS];
-
-    VUI vui;
-    PTL ptl;
-
-    uint8_t scaling_list_enable_flag;
-    ScalingList scaling_list;
-
-    unsigned int nb_st_rps;
-    ShortTermRPS st_rps[MAX_SHORT_TERM_RPS_COUNT];
-
-    uint8_t amp_enabled_flag;
-    uint8_t sao_enabled;
-
-    uint8_t long_term_ref_pics_present_flag;
-    uint16_t lt_ref_pic_poc_lsb_sps[32];
-    uint8_t used_by_curr_pic_lt_sps_flag[32];
-    uint8_t num_long_term_ref_pics_sps;
-
-    struct {
-        uint8_t bit_depth;
-        uint8_t bit_depth_chroma;
-        unsigned int log2_min_pcm_cb_size;
-        unsigned int log2_max_pcm_cb_size;
-        uint8_t loop_filter_disable_flag;
-    } pcm;
-    uint8_t sps_temporal_mvp_enabled_flag;
-    uint8_t sps_strong_intra_smoothing_enable_flag;
-
-    unsigned int log2_min_cb_size;
-    unsigned int log2_diff_max_min_coding_block_size;
-    unsigned int log2_min_tb_size;
-    unsigned int log2_max_trafo_size;
-    unsigned int log2_ctb_size;
-    unsigned int log2_min_pu_size;
-
-    int max_transform_hierarchy_depth_inter;
-    int max_transform_hierarchy_depth_intra;
-
-    ///< coded frame dimension in various units
-    int width;
-    int height;
-    int ctb_width;
-    int ctb_height;
-    int ctb_size;
-    int min_cb_width;
-    int min_cb_height;
-    int min_tb_width;
-    int min_tb_height;
-    int min_pu_width;
-    int min_pu_height;
-
-    int hshift[3];
-    int vshift[3];
-
-    int qp_bd_offset;
-} HEVCSPS;
-
-typedef struct HEVCPPS {
-    unsigned int sps_id; ///< seq_parameter_set_id
-
-    uint8_t sign_data_hiding_flag;
-
-    uint8_t cabac_init_present_flag;
-
-    int num_ref_idx_l0_default_active; ///< num_ref_idx_l0_default_active_minus1 + 1
-    int num_ref_idx_l1_default_active; ///< num_ref_idx_l1_default_active_minus1 + 1
-    int pic_init_qp_minus26;
-
-    uint8_t constrained_intra_pred_flag;
-    uint8_t transform_skip_enabled_flag;
-
-    uint8_t cu_qp_delta_enabled_flag;
-    int diff_cu_qp_delta_depth;
-
-    int cb_qp_offset;
-    int cr_qp_offset;
-    uint8_t pic_slice_level_chroma_qp_offsets_present_flag;
-    uint8_t weighted_pred_flag;
-    uint8_t weighted_bipred_flag;
-    uint8_t output_flag_present_flag;
-    uint8_t transquant_bypass_enable_flag;
-
-    uint8_t dependent_slice_segments_enabled_flag;
-    uint8_t tiles_enabled_flag;
-    uint8_t entropy_coding_sync_enabled_flag;
-
-    int num_tile_columns;   ///< num_tile_columns_minus1 + 1
-    int num_tile_rows;      ///< num_tile_rows_minus1 + 1
-    uint8_t uniform_spacing_flag;
-    uint8_t loop_filter_across_tiles_enabled_flag;
-
-    uint8_t seq_loop_filter_across_slices_enabled_flag;
-
-    uint8_t deblocking_filter_control_present_flag;
-    uint8_t deblocking_filter_override_enabled_flag;
-    uint8_t disable_dbf;
-    int beta_offset;    ///< beta_offset_div2 * 2
-    int tc_offset;      ///< tc_offset_div2 * 2
-
-    uint8_t scaling_list_data_present_flag;
-    ScalingList scaling_list;
-
-    uint8_t lists_modification_present_flag;
-    int log2_parallel_merge_level; ///< log2_parallel_merge_level_minus2 + 2
-    int num_extra_slice_header_bits;
-    uint8_t slice_header_extension_present_flag;
-
-    // Inferred parameters
-    unsigned int *column_width;  ///< ColumnWidth
-    unsigned int *row_height;    ///< RowHeight
-    unsigned int *col_bd;        ///< ColBd
-    unsigned int *row_bd;        ///< RowBd
-    int *col_idxX;
-
-    int *ctb_addr_rs_to_ts; ///< CtbAddrRSToTS
-    int *ctb_addr_ts_to_rs; ///< CtbAddrTSToRS
-    int *tile_id;           ///< TileId
-    int *tile_pos_rs;       ///< TilePosRS
-    int *min_tb_addr_zs;    ///< MinTbAddrZS
-} HEVCPPS;
-
-typedef struct HEVCParamSets {
-    AVBufferRef *vps_list[MAX_VPS_COUNT];
-    AVBufferRef *sps_list[MAX_SPS_COUNT];
-    AVBufferRef *pps_list[MAX_PPS_COUNT];
-
-    /* currently active parameter sets */
-    const HEVCVPS *vps;
-    const HEVCSPS *sps;
-    const HEVCPPS *pps;
-} HEVCParamSets;
-
-typedef struct SliceHeader {
-    unsigned int pps_id;
-
-    ///< address (in raster order) of the first block in the current slice segment
-    unsigned int   slice_segment_addr;
-    ///< address (in raster order) of the first block in the current slice
-    unsigned int   slice_addr;
-
-    enum SliceType slice_type;
-
-    int pic_order_cnt_lsb;
-
-    uint8_t first_slice_in_pic_flag;
-    uint8_t dependent_slice_segment_flag;
-    uint8_t pic_output_flag;
-    uint8_t colour_plane_id;
-
-    ///< RPS coded in the slice header itself is stored here
-    int short_term_ref_pic_set_sps_flag;
-    int short_term_ref_pic_set_size;
-    ShortTermRPS slice_rps;
-    const ShortTermRPS *short_term_rps;
-    int long_term_ref_pic_set_size;
-    LongTermRPS long_term_rps;
-    unsigned int list_entry_lx[2][32];
-
-    uint8_t rpl_modification_flag[2];
-    uint8_t no_output_of_prior_pics_flag;
-    uint8_t slice_temporal_mvp_enabled_flag;
-
-    unsigned int nb_refs[2];
-
-    uint8_t slice_sample_adaptive_offset_flag[3];
-    uint8_t mvd_l1_zero_flag;
-
-    uint8_t cabac_init_flag;
-    uint8_t disable_deblocking_filter_flag; ///< slice_header_disable_deblocking_filter_flag
-    uint8_t slice_loop_filter_across_slices_enabled_flag;
-    uint8_t collocated_list;
-
-    unsigned int collocated_ref_idx;
-
-    int slice_qp_delta;
-    int slice_cb_qp_offset;
-    int slice_cr_qp_offset;
-
-    int beta_offset;    ///< beta_offset_div2 * 2
-    int tc_offset;      ///< tc_offset_div2 * 2
-
-    unsigned int max_num_merge_cand; ///< 5 - 5_minus_max_num_merge_cand
-
-    int num_entry_point_offsets;
-
-    int8_t slice_qp;
-
-    uint8_t luma_log2_weight_denom;
-    int16_t chroma_log2_weight_denom;
-
-    int16_t luma_weight_l0[16];
-    int16_t chroma_weight_l0[16][2];
-    int16_t chroma_weight_l1[16][2];
-    int16_t luma_weight_l1[16];
-
-    int16_t luma_offset_l0[16];
-    int16_t chroma_offset_l0[16][2];
-
-    int16_t luma_offset_l1[16];
-    int16_t chroma_offset_l1[16][2];
-
-    int slice_ctb_addr_rs;
-} SliceHeader;
-
-typedef struct CodingTree {
-    int depth; ///< ctDepth
-} CodingTree;
-
-typedef struct CodingUnit {
-    int x;
-    int y;
-
-    enum PredMode pred_mode;    ///< PredMode
-    enum PartMode part_mode;    ///< PartMode
-
-    // Inferred parameters
-    uint8_t intra_split_flag;   ///< IntraSplitFlag
-    uint8_t max_trafo_depth;    ///< MaxTrafoDepth
-    uint8_t cu_transquant_bypass_flag;
-} CodingUnit;
-
-typedef struct Mv {
-    int16_t x;  ///< horizontal component of motion vector
-    int16_t y;  ///< vertical component of motion vector
-} Mv;
-
-typedef struct MvField {
-    DECLARE_ALIGNED(4, Mv, mv)[2];
-    int8_t ref_idx[2];
-    int8_t pred_flag[2];
-    uint8_t is_intra;
-} MvField;
-
-typedef struct NeighbourAvailable {
-    int cand_bottom_left;
-    int cand_left;
-    int cand_up;
-    int cand_up_left;
-    int cand_up_right;
-    int cand_up_right_sap;
-} NeighbourAvailable;
-
-typedef struct PredictionUnit {
-    int mpm_idx;
-    int rem_intra_luma_pred_mode;
-    uint8_t intra_pred_mode[4];
-    Mv mvd;
-    uint8_t merge_flag;
-    uint8_t intra_pred_mode_c;
-} PredictionUnit;
-
-typedef struct TransformUnit {
-    int cu_qp_delta;
-
-    // Inferred parameters;
-    int cur_intra_pred_mode;
-    uint8_t is_cu_qp_delta_coded;
-} TransformUnit;
-
-typedef struct DBParams {
-    int beta_offset;
-    int tc_offset;
-} DBParams;
-
-#define HEVC_FRAME_FLAG_OUTPUT    (1 << 0)
-#define HEVC_FRAME_FLAG_SHORT_REF (1 << 1)
-#define HEVC_FRAME_FLAG_LONG_REF  (1 << 2)
-
-typedef struct HEVCFrame {
-    AVFrame *frame;
-    ThreadFrame tf;
-    MvField *tab_mvf;
-    RefPicList *refPicList;
-    RefPicListTab **rpl_tab;
-    int ctb_count;
-    int poc;
-    struct HEVCFrame *collocated_ref;
-
-    HEVCWindow window;
-
-    AVBufferRef *tab_mvf_buf;
-    AVBufferRef *rpl_tab_buf;
-    AVBufferRef *rpl_buf;
-
-    AVBufferRef *hwaccel_priv_buf;
-    void *hwaccel_picture_private;
-
-    /**
-     * A sequence counter, so that old frames are output first
-     * after a POC reset
-     */
-    uint16_t sequence;
-
-    /**
-     * A combination of HEVC_FRAME_FLAG_*
-     */
-    uint8_t flags;
-} HEVCFrame;
-
-struct HEVCContext;
-
-typedef struct HEVCPredContext {
-    void (*intra_pred[4])(struct HEVCContext *s, int x0, int y0, int c_idx);
-
-    void (*pred_planar[4])(uint8_t *src, const uint8_t *top,
-                           const uint8_t *left, ptrdiff_t stride);
-    void (*pred_dc)(uint8_t *src, const uint8_t *top, const uint8_t *left,
-                    ptrdiff_t stride, int log2_size, int c_idx);
-    void (*pred_angular[4])(uint8_t *src, const uint8_t *top,
-                            const uint8_t *left, ptrdiff_t stride,
-                            int c_idx, int mode);
-} HEVCPredContext;
-
-typedef struct HEVCLocalContext {
-    DECLARE_ALIGNED(16, int16_t, mc_buffer[(MAX_PB_SIZE + 24) * MAX_PB_SIZE]);
-    uint8_t cabac_state[HEVC_CONTEXTS];
-
-    uint8_t first_qp_group;
-
-    GetBitContext gb;
-    CABACContext cc;
-
-    int8_t qp_y;
-    int8_t curr_qp_y;
-
-    TransformUnit tu;
-
-    uint8_t ctb_left_flag;
-    uint8_t ctb_up_flag;
-    uint8_t ctb_up_right_flag;
-    uint8_t ctb_up_left_flag;
-    int     start_of_tiles_x;
-    int     end_of_tiles_x;
-    int     end_of_tiles_y;
-    /* +7 is for subpixel interpolation, *2 for high bit depths */
-    DECLARE_ALIGNED(32, uint8_t, edge_emu_buffer)[(MAX_PB_SIZE + 7) * EDGE_EMU_BUFFER_STRIDE * 2];
-    CodingTree ct;
-    CodingUnit cu;
-    PredictionUnit pu;
-    NeighbourAvailable na;
-
-#define BOUNDARY_LEFT_SLICE     (1 << 0)
-#define BOUNDARY_LEFT_TILE      (1 << 1)
-#define BOUNDARY_UPPER_SLICE    (1 << 2)
-#define BOUNDARY_UPPER_TILE     (1 << 3)
-    /* properties of the boundary of the current CTB for the purposes
-     * of the deblocking filter */
-    int boundary_flags;
-} HEVCLocalContext;
-
-typedef struct HEVCContext {
-    const AVClass *c;  // needed by private avoptions
-    AVCodecContext *avctx;
-
-    HEVCLocalContext HEVClc;
-
-    uint8_t cabac_state[HEVC_CONTEXTS];
-
-    /** 1 if the independent slice segment header was successfully parsed */
-    uint8_t slice_initialized;
-
-    AVFrame *frame;
-    AVFrame *sao_frame;
-    AVFrame *tmp_frame;
-    AVFrame *output_frame;
-
-    HEVCParamSets ps;
-
-    AVBufferPool *tab_mvf_pool;
-    AVBufferPool *rpl_tab_pool;
-
-    ///< candidate references for the current frame
-    RefPicList rps[5];
-
-    SliceHeader sh;
-    SAOParams *sao;
-    DBParams *deblock;
-    enum NALUnitType nal_unit_type;
-    int temporal_id;  ///< temporal_id_plus1 - 1
-    HEVCFrame *ref;
-    HEVCFrame DPB[32];
-    int poc;
-    int pocTid0;
-    int slice_idx; ///< number of the slice being currently decoded
-    int eos;       ///< current packet contains an EOS/EOB NAL
-    int max_ra;
-    int bs_width;
-    int bs_height;
-
-    int is_decoded;
-
-    HEVCPredContext hpc;
-    HEVCDSPContext hevcdsp;
-    VideoDSPContext vdsp;
-    BswapDSPContext bdsp;
-    int8_t *qp_y_tab;
-    uint8_t *horizontal_bs;
-    uint8_t *vertical_bs;
-
-    int32_t *tab_slice_address;
-
-    //  CU
-    uint8_t *skip_flag;
-    uint8_t *tab_ct_depth;
-    // PU
-    uint8_t *tab_ipm;
-
-    uint8_t *cbf_luma; // cbf_luma of colocated TU
-    uint8_t *is_pcm;
-
-    // CTB-level flags affecting loop filter operation
-    uint8_t *filter_slice_edges;
-
-    /** used on BE to byteswap the lines for checksumming */
-    uint8_t *checksum_buf;
-    int      checksum_buf_size;
-
-    /**
-     * Sequence counters for decoded and output frames, so that old
-     * frames are output first after a POC reset
-     */
-    uint16_t seq_decode;
-    uint16_t seq_output;
-
-    H2645Packet pkt;
-    // type of the first VCL NAL of the current frame
-    enum NALUnitType first_nal_type;
-
-    // for checking the frame checksums
-    struct AVMD5 *md5_ctx;
-    uint8_t       md5[3][16];
-    uint8_t is_md5;
-
-    uint8_t context_initialized;
-    uint8_t is_nalff;       ///< this flag is != 0 if bitstream is encapsulated
-                            ///< as a format defined in 14496-15
-    int apply_defdispwin;
-
-    int nal_length_size;    ///< Number of bytes used for nal length (1, 2 or 4)
-    int nuh_layer_id;
-
-    /** frame packing arrangement variables */
-    int sei_frame_packing_present;
-    int frame_packing_arrangement_type;
-    int content_interpretation_type;
-    int quincunx_subsampling;
-
-    /** display orientation */
-    int sei_display_orientation_present;
-    int sei_anticlockwise_rotation;
-    int sei_hflip, sei_vflip;
-} HEVCContext;
-
-int ff_hevc_decode_short_term_rps(GetBitContext *gb, AVCodecContext *avctx,
-                                  ShortTermRPS *rps, const HEVCSPS *sps, int is_slice_header);
-
-/**
- * Parse the SPS from the bitstream into the provided HEVCSPS struct.
- *
- * @param sps_id the SPS id will be written here
- * @param apply_defdispwin if set 1, the default display window from the VUI
- *                         will be applied to the video dimensions
- * @param vps_list if non-NULL, this function will validate that the SPS refers
- *                 to an existing VPS
- */
-int ff_hevc_parse_sps(HEVCSPS *sps, GetBitContext *gb, unsigned int *sps_id,
-                      int apply_defdispwin, AVBufferRef **vps_list, AVCodecContext *avctx);
-
-int ff_hevc_decode_nal_vps(GetBitContext *gb, AVCodecContext *avctx,
-                           HEVCParamSets *ps);
-int ff_hevc_decode_nal_sps(GetBitContext *gb, AVCodecContext *avctx,
-                           HEVCParamSets *ps, int apply_defdispwin);
-int ff_hevc_decode_nal_pps(GetBitContext *gb, AVCodecContext *avctx,
-                           HEVCParamSets *ps);
-int ff_hevc_decode_nal_sei(HEVCContext *s);
-
-/**
- * Mark all frames in DPB as unused for reference.
- */
-void ff_hevc_clear_refs(HEVCContext *s);
-
-/**
- * Drop all frames currently in DPB.
- */
-void ff_hevc_flush_dpb(HEVCContext *s);
-
-/**
- * Compute POC of the current frame and return it.
- */
-int ff_hevc_compute_poc(HEVCContext *s, int poc_lsb);
-
-RefPicList *ff_hevc_get_ref_list(HEVCContext *s, HEVCFrame *frame,
-                                 int x0, int y0);
-
-/**
- * Construct the reference picture sets for the current frame.
- */
-int ff_hevc_frame_rps(HEVCContext *s);
-
-/**
- * Construct the reference picture list(s) for the current slice.
- */
-int ff_hevc_slice_rpl(HEVCContext *s);
-
-void ff_hevc_save_states(HEVCContext *s, int ctb_addr_ts);
-void ff_hevc_cabac_init(HEVCContext *s, int ctb_addr_ts);
-int ff_hevc_sao_merge_flag_decode(HEVCContext *s);
-int ff_hevc_sao_type_idx_decode(HEVCContext *s);
-int ff_hevc_sao_band_position_decode(HEVCContext *s);
-int ff_hevc_sao_offset_abs_decode(HEVCContext *s);
-int ff_hevc_sao_offset_sign_decode(HEVCContext *s);
-int ff_hevc_sao_eo_class_decode(HEVCContext *s);
-int ff_hevc_end_of_slice_flag_decode(HEVCContext *s);
-int ff_hevc_cu_transquant_bypass_flag_decode(HEVCContext *s);
-int ff_hevc_skip_flag_decode(HEVCContext *s, int x0, int y0,
-                             int x_cb, int y_cb);
-int ff_hevc_pred_mode_decode(HEVCContext *s);
-int ff_hevc_split_coding_unit_flag_decode(HEVCContext *s, int ct_depth,
-                                          int x0, int y0);
-int ff_hevc_part_mode_decode(HEVCContext *s, int log2_cb_size);
-int ff_hevc_pcm_flag_decode(HEVCContext *s);
-int ff_hevc_prev_intra_luma_pred_flag_decode(HEVCContext *s);
-int ff_hevc_mpm_idx_decode(HEVCContext *s);
-int ff_hevc_rem_intra_luma_pred_mode_decode(HEVCContext *s);
-int ff_hevc_intra_chroma_pred_mode_decode(HEVCContext *s);
-int ff_hevc_merge_idx_decode(HEVCContext *s);
-int ff_hevc_merge_flag_decode(HEVCContext *s);
-int ff_hevc_inter_pred_idc_decode(HEVCContext *s, int nPbW, int nPbH);
-int ff_hevc_ref_idx_lx_decode(HEVCContext *s, int num_ref_idx_lx);
-int ff_hevc_mvp_lx_flag_decode(HEVCContext *s);
-int ff_hevc_no_residual_syntax_flag_decode(HEVCContext *s);
-int ff_hevc_abs_mvd_greater0_flag_decode(HEVCContext *s);
-int ff_hevc_abs_mvd_greater1_flag_decode(HEVCContext *s);
-int ff_hevc_mvd_decode(HEVCContext *s);
-int ff_hevc_mvd_sign_flag_decode(HEVCContext *s);
-int ff_hevc_split_transform_flag_decode(HEVCContext *s, int log2_trafo_size);
-int ff_hevc_cbf_cb_cr_decode(HEVCContext *s, int trafo_depth);
-int ff_hevc_cbf_luma_decode(HEVCContext *s, int trafo_depth);
-int ff_hevc_transform_skip_flag_decode(HEVCContext *s, int c_idx);
-int ff_hevc_last_significant_coeff_x_prefix_decode(HEVCContext *s, int c_idx,
-                                                   int log2_size);
-int ff_hevc_last_significant_coeff_y_prefix_decode(HEVCContext *s, int c_idx,
-                                                   int log2_size);
-int ff_hevc_last_significant_coeff_suffix_decode(HEVCContext *s,
-                                                 int last_significant_coeff_prefix);
-int ff_hevc_significant_coeff_group_flag_decode(HEVCContext *s, int c_idx,
-                                                int ctx_cg);
-int ff_hevc_significant_coeff_flag_decode(HEVCContext *s, int c_idx, int x_c,
-                                          int y_c, int log2_trafo_size,
-                                          int scan_idx, int prev_sig);
-int ff_hevc_coeff_abs_level_greater1_flag_decode(HEVCContext *s, int c_idx,
-                                                 int ctx_set);
-int ff_hevc_coeff_abs_level_greater2_flag_decode(HEVCContext *s, int c_idx,
-                                                 int inc);
-int ff_hevc_coeff_abs_level_remaining(HEVCContext *s, int base_level,
-                                      int rc_rice_param);
-int ff_hevc_coeff_sign_flag(HEVCContext *s, uint8_t nb);
-
-/**
- * Get the number of candidate references for the current frame.
- */
-int ff_hevc_frame_nb_refs(HEVCContext *s);
-
-int ff_hevc_set_new_ref(HEVCContext *s, AVFrame **frame, int poc);
-
-/**
- * Find next frame in output order and put a reference to it in frame.
- * @return 1 if a frame was output, 0 otherwise
- */
-int ff_hevc_output_frame(HEVCContext *s, AVFrame *frame, int flush);
-
-void ff_hevc_unref_frame(HEVCContext *s, HEVCFrame *frame, int flags);
-
-void ff_hevc_set_neighbour_available(HEVCContext *s, int x0, int y0,
-                                     int nPbW, int nPbH);
-void ff_hevc_luma_mv_merge_mode(HEVCContext *s, int x0, int y0,
-                                int nPbW, int nPbH, int log2_cb_size,
-                                int part_idx, int merge_idx, MvField *mv);
-void ff_hevc_luma_mv_mvp_mode(HEVCContext *s, int x0, int y0,
-                              int nPbW, int nPbH, int log2_cb_size,
-                              int part_idx, int merge_idx,
-                              MvField *mv, int mvp_lx_flag, int LX);
-void ff_hevc_set_qPy(HEVCContext *s, int xC, int yC, int xBase, int yBase,
-                     int log2_cb_size);
-void ff_hevc_deblocking_boundary_strengths(HEVCContext *s, int x0, int y0,
-                                           int log2_trafo_size);
-int ff_hevc_cu_qp_delta_sign_flag(HEVCContext *s);
-int ff_hevc_cu_qp_delta_abs(HEVCContext *s);
-void ff_hevc_hls_filter(HEVCContext *s, int x, int y);
-void ff_hevc_hls_filters(HEVCContext *s, int x_ctb, int y_ctb, int ctb_size);
-
-void ff_hevc_pps_free(HEVCPPS **ppps);
-
-void ff_hevc_pred_init(HEVCPredContext *hpc, int bit_depth);
-
-int ff_hevc_encode_nal_vps(HEVCVPS *vps, unsigned int id,
-                           uint8_t *buf, int buf_size);
-
-extern const uint8_t ff_hevc_qpel_extra_before[4];
-extern const uint8_t ff_hevc_qpel_extra_after[4];
-extern const uint8_t ff_hevc_qpel_extra[4];
-
-extern const uint8_t ff_hevc_diag_scan4x4_x[16];
-extern const uint8_t ff_hevc_diag_scan4x4_y[16];
-extern const uint8_t ff_hevc_diag_scan8x8_x[64];
-extern const uint8_t ff_hevc_diag_scan8x8_y[64];
-
-#endif /* AVCODEC_HEVC_H */
index b01808f..eb16f57 100644 (file)
@@ -25,7 +25,7 @@
 #include "libavutil/common.h"
 
 #include "cabac_functions.h"
-#include "hevc.h"
+#include "hevcdec.h"
 
 #define CABAC_MAX_BIN 31
 
index f4b6096..7976c34 100644 (file)
@@ -20,7 +20,7 @@
 
 #include <stdint.h>
 
-#include "hevc.h"
+#include "hevcdec.h"
 
 const uint8_t ff_hevc_diag_scan4x4_x[16] = {
     0, 0, 1, 0,
index 5037dae..4b71a89 100644 (file)
@@ -26,7 +26,7 @@
 #include "libavutil/internal.h"
 
 #include "cabac_functions.h"
-#include "hevc.h"
+#include "hevcdec.h"
 
 #define LUMA 0
 #define CB 1
index 8d7ac58..f364fbd 100644 (file)
@@ -27,7 +27,7 @@
 #include "avcodec.h"
 #include "bsf.h"
 #include "bytestream.h"
-#include "hevc.h"
+#include "hevcdec.h"
 
 #define MIN_HEVCC_LENGTH 23
 
index 446b83a..90aff97 100644 (file)
@@ -21,7 +21,7 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
-#include "hevc.h"
+#include "hevcdec.h"
 
 static const uint8_t l0_l1_cand_idx[12][2] = {
     { 0, 1, },
index dc5fffc..b68ceb9 100644 (file)
@@ -23,7 +23,7 @@
 #include "libavutil/common.h"
 
 #include "golomb.h"
-#include "hevc.h"
+#include "hevcdec.h"
 #include "h2645_parse.h"
 #include "parser.h"
 
index 5c249d8..b7b2ea9 100644 (file)
@@ -26,7 +26,7 @@
 #include "libavutil/imgutils.h"
 
 #include "golomb.h"
-#include "hevc.h"
+#include "hevcdec.h"
 
 static const uint8_t default_scaling_list_intra[] = {
     16, 16, 16, 16, 17, 18, 21, 24,
index 007a132..fdf9fb7 100644 (file)
@@ -19,7 +19,7 @@
  */
 
 #include "golomb.h"
-#include "hevc.h"
+#include "hevcdec.h"
 #include "put_bits.h"
 
 static void write_ptl_layer(PutBitContext *pb, PTLCommon *ptl)
index b51f259..3e056da 100644 (file)
@@ -26,7 +26,7 @@
 
 #include "internal.h"
 #include "thread.h"
-#include "hevc.h"
+#include "hevcdec.h"
 
 void ff_hevc_unref_frame(HEVCContext *s, HEVCFrame *frame, int flags)
 {
index 17cef67..37c8064 100644 (file)
@@ -23,7 +23,7 @@
  */
 
 #include "golomb.h"
-#include "hevc.h"
+#include "hevcdec.h"
 
 enum HEVC_SEI_TYPE {
     SEI_TYPE_BUFFERING_PERIOD                     = 0,
diff --git a/libavcodec/hevcdec.c b/libavcodec/hevcdec.c
new file mode 100644 (file)
index 0000000..2afd638
--- /dev/null
@@ -0,0 +1,3077 @@
+/*
+ * HEVC video decoder
+ *
+ * Copyright (C) 2012 - 2013 Guillaume Martres
+ * Copyright (C) 2012 - 2013 Mickael Raulet
+ * Copyright (C) 2012 - 2013 Gildas Cocherel
+ * Copyright (C) 2012 - 2013 Wassim Hamidouche
+ *
+ * This file is part of Libav.
+ *
+ * Libav is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * Libav is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "libavutil/attributes.h"
+#include "libavutil/common.h"
+#include "libavutil/display.h"
+#include "libavutil/internal.h"
+#include "libavutil/md5.h"
+#include "libavutil/opt.h"
+#include "libavutil/pixdesc.h"
+#include "libavutil/stereo3d.h"
+
+#include "bswapdsp.h"
+#include "bytestream.h"
+#include "cabac_functions.h"
+#include "golomb.h"
+#include "hevcdec.h"
+#include "profiles.h"
+
+const uint8_t ff_hevc_qpel_extra_before[4] = { 0, 3, 3, 3 };
+const uint8_t ff_hevc_qpel_extra_after[4]  = { 0, 4, 4, 4 };
+const uint8_t ff_hevc_qpel_extra[4]        = { 0, 7, 7, 7 };
+
+static const uint8_t scan_1x1[1] = { 0 };
+
+static const uint8_t horiz_scan2x2_x[4] = { 0, 1, 0, 1 };
+
+static const uint8_t horiz_scan2x2_y[4] = { 0, 0, 1, 1 };
+
+static const uint8_t horiz_scan4x4_x[16] = {
+    0, 1, 2, 3,
+    0, 1, 2, 3,
+    0, 1, 2, 3,
+    0, 1, 2, 3,
+};
+
+static const uint8_t horiz_scan4x4_y[16] = {
+    0, 0, 0, 0,
+    1, 1, 1, 1,
+    2, 2, 2, 2,
+    3, 3, 3, 3,
+};
+
+static const uint8_t horiz_scan8x8_inv[8][8] = {
+    {  0,  1,  2,  3, 16, 17, 18, 19, },
+    {  4,  5,  6,  7, 20, 21, 22, 23, },
+    {  8,  9, 10, 11, 24, 25, 26, 27, },
+    { 12, 13, 14, 15, 28, 29, 30, 31, },
+    { 32, 33, 34, 35, 48, 49, 50, 51, },
+    { 36, 37, 38, 39, 52, 53, 54, 55, },
+    { 40, 41, 42, 43, 56, 57, 58, 59, },
+    { 44, 45, 46, 47, 60, 61, 62, 63, },
+};
+
+static const uint8_t diag_scan2x2_x[4] = { 0, 0, 1, 1 };
+
+static const uint8_t diag_scan2x2_y[4] = { 0, 1, 0, 1 };
+
+static const uint8_t diag_scan2x2_inv[2][2] = {
+    { 0, 2, },
+    { 1, 3, },
+};
+
+static const uint8_t diag_scan4x4_inv[4][4] = {
+    { 0,  2,  5,  9, },
+    { 1,  4,  8, 12, },
+    { 3,  7, 11, 14, },
+    { 6, 10, 13, 15, },
+};
+
+static const uint8_t diag_scan8x8_inv[8][8] = {
+    {  0,  2,  5,  9, 14, 20, 27, 35, },
+    {  1,  4,  8, 13, 19, 26, 34, 42, },
+    {  3,  7, 12, 18, 25, 33, 41, 48, },
+    {  6, 11, 17, 24, 32, 40, 47, 53, },
+    { 10, 16, 23, 31, 39, 46, 52, 57, },
+    { 15, 22, 30, 38, 45, 51, 56, 60, },
+    { 21, 29, 37, 44, 50, 55, 59, 62, },
+    { 28, 36, 43, 49, 54, 58, 61, 63, },
+};
+
+/**
+ * NOTE: Each function hls_foo correspond to the function foo in the
+ * specification (HLS stands for High Level Syntax).
+ */
+
+/**
+ * Section 5.7
+ */
+
+/* free everything allocated  by pic_arrays_init() */
+static void pic_arrays_free(HEVCContext *s)
+{
+    av_freep(&s->sao);
+    av_freep(&s->deblock);
+
+    av_freep(&s->skip_flag);
+    av_freep(&s->tab_ct_depth);
+
+    av_freep(&s->tab_ipm);
+    av_freep(&s->cbf_luma);
+    av_freep(&s->is_pcm);
+
+    av_freep(&s->qp_y_tab);
+    av_freep(&s->tab_slice_address);
+    av_freep(&s->filter_slice_edges);
+
+    av_freep(&s->horizontal_bs);
+    av_freep(&s->vertical_bs);
+
+    av_buffer_pool_uninit(&s->tab_mvf_pool);
+    av_buffer_pool_uninit(&s->rpl_tab_pool);
+}
+
+/* allocate arrays that depend on frame dimensions */
+static int pic_arrays_init(HEVCContext *s, const HEVCSPS *sps)
+{
+    int log2_min_cb_size = sps->log2_min_cb_size;
+    int width            = sps->width;
+    int height           = sps->height;
+    int pic_size_in_ctb  = ((width  >> log2_min_cb_size) + 1) *
+                           ((height >> log2_min_cb_size) + 1);
+    int ctb_count        = sps->ctb_width * sps->ctb_height;
+    int min_pu_size      = sps->min_pu_width * sps->min_pu_height;
+
+    s->bs_width  = width  >> 3;
+    s->bs_height = height >> 3;
+
+    s->sao           = av_mallocz_array(ctb_count, sizeof(*s->sao));
+    s->deblock       = av_mallocz_array(ctb_count, sizeof(*s->deblock));
+    if (!s->sao || !s->deblock)
+        goto fail;
+
+    s->skip_flag    = av_malloc(pic_size_in_ctb);
+    s->tab_ct_depth = av_malloc(sps->min_cb_height * sps->min_cb_width);
+    if (!s->skip_flag || !s->tab_ct_depth)
+        goto fail;
+
+    s->cbf_luma = av_malloc(sps->min_tb_width * sps->min_tb_height);
+    s->tab_ipm  = av_mallocz(min_pu_size);
+    s->is_pcm   = av_malloc(min_pu_size);
+    if (!s->tab_ipm || !s->cbf_luma || !s->is_pcm)
+        goto fail;
+
+    s->filter_slice_edges = av_malloc(ctb_count);
+    s->tab_slice_address  = av_malloc(pic_size_in_ctb *
+                                      sizeof(*s->tab_slice_address));
+    s->qp_y_tab           = av_malloc(pic_size_in_ctb *
+                                      sizeof(*s->qp_y_tab));
+    if (!s->qp_y_tab || !s->filter_slice_edges || !s->tab_slice_address)
+        goto fail;
+
+    s->horizontal_bs = av_mallocz(2 * s->bs_width * (s->bs_height + 1));
+    s->vertical_bs   = av_mallocz(2 * s->bs_width * (s->bs_height + 1));
+    if (!s->horizontal_bs || !s->vertical_bs)
+        goto fail;
+
+    s->tab_mvf_pool = av_buffer_pool_init(min_pu_size * sizeof(MvField),
+                                          av_buffer_alloc);
+    s->rpl_tab_pool = av_buffer_pool_init(ctb_count * sizeof(RefPicListTab),
+                                          av_buffer_allocz);
+    if (!s->tab_mvf_pool || !s->rpl_tab_pool)
+        goto fail;
+
+    return 0;
+
+fail:
+    pic_arrays_free(s);
+    return AVERROR(ENOMEM);
+}
+
+static void pred_weight_table(HEVCContext *s, GetBitContext *gb)
+{
+    int i = 0;
+    int j = 0;
+    uint8_t luma_weight_l0_flag[16];
+    uint8_t chroma_weight_l0_flag[16];
+    uint8_t luma_weight_l1_flag[16];
+    uint8_t chroma_weight_l1_flag[16];
+
+    s->sh.luma_log2_weight_denom = av_clip(get_ue_golomb_long(gb), 0, 7);
+    if (s->ps.sps->chroma_format_idc != 0) {
+        int delta = get_se_golomb(gb);
+        s->sh.chroma_log2_weight_denom = av_clip(s->sh.luma_log2_weight_denom + delta, 0, 7);
+    }
+
+    for (i = 0; i < s->sh.nb_refs[L0]; i++) {
+        luma_weight_l0_flag[i] = get_bits1(gb);
+        if (!luma_weight_l0_flag[i]) {
+            s->sh.luma_weight_l0[i] = 1 << s->sh.luma_log2_weight_denom;
+            s->sh.luma_offset_l0[i] = 0;
+        }
+    }
+    if (s->ps.sps->chroma_format_idc != 0) { // FIXME: invert "if" and "for"
+        for (i = 0; i < s->sh.nb_refs[L0]; i++)
+            chroma_weight_l0_flag[i] = get_bits1(gb);
+    } else {
+        for (i = 0; i < s->sh.nb_refs[L0]; i++)
+            chroma_weight_l0_flag[i] = 0;
+    }
+    for (i = 0; i < s->sh.nb_refs[L0]; i++) {
+        if (luma_weight_l0_flag[i]) {
+            int delta_luma_weight_l0 = get_se_golomb(gb);
+            s->sh.luma_weight_l0[i] = (1 << s->sh.luma_log2_weight_denom) + delta_luma_weight_l0;
+            s->sh.luma_offset_l0[i] = get_se_golomb(gb);
+        }
+        if (chroma_weight_l0_flag[i]) {
+            for (j = 0; j < 2; j++) {
+                int delta_chroma_weight_l0 = get_se_golomb(gb);
+                int delta_chroma_offset_l0 = get_se_golomb(gb);
+                s->sh.chroma_weight_l0[i][j] = (1 << s->sh.chroma_log2_weight_denom) + delta_chroma_weight_l0;
+                s->sh.chroma_offset_l0[i][j] = av_clip((delta_chroma_offset_l0 - ((128 * s->sh.chroma_weight_l0[i][j])
+                                                                                    >> s->sh.chroma_log2_weight_denom) + 128), -128, 127);
+            }
+        } else {
+            s->sh.chroma_weight_l0[i][0] = 1 << s->sh.chroma_log2_weight_denom;
+            s->sh.chroma_offset_l0[i][0] = 0;
+            s->sh.chroma_weight_l0[i][1] = 1 << s->sh.chroma_log2_weight_denom;
+            s->sh.chroma_offset_l0[i][1] = 0;
+        }
+    }
+    if (s->sh.slice_type == B_SLICE) {
+        for (i = 0; i < s->sh.nb_refs[L1]; i++) {
+            luma_weight_l1_flag[i] = get_bits1(gb);
+            if (!luma_weight_l1_flag[i]) {
+                s->sh.luma_weight_l1[i] = 1 << s->sh.luma_log2_weight_denom;
+                s->sh.luma_offset_l1[i] = 0;
+            }
+        }
+        if (s->ps.sps->chroma_format_idc != 0) {
+            for (i = 0; i < s->sh.nb_refs[L1]; i++)
+                chroma_weight_l1_flag[i] = get_bits1(gb);
+        } else {
+            for (i = 0; i < s->sh.nb_refs[L1]; i++)
+                chroma_weight_l1_flag[i] = 0;
+        }
+        for (i = 0; i < s->sh.nb_refs[L1]; i++) {
+            if (luma_weight_l1_flag[i]) {
+                int delta_luma_weight_l1 = get_se_golomb(gb);
+                s->sh.luma_weight_l1[i] = (1 << s->sh.luma_log2_weight_denom) + delta_luma_weight_l1;
+                s->sh.luma_offset_l1[i] = get_se_golomb(gb);
+            }
+            if (chroma_weight_l1_flag[i]) {
+                for (j = 0; j < 2; j++) {
+                    int delta_chroma_weight_l1 = get_se_golomb(gb);
+                    int delta_chroma_offset_l1 = get_se_golomb(gb);
+                    s->sh.chroma_weight_l1[i][j] = (1 << s->sh.chroma_log2_weight_denom) + delta_chroma_weight_l1;
+                    s->sh.chroma_offset_l1[i][j] = av_clip((delta_chroma_offset_l1 - ((128 * s->sh.chroma_weight_l1[i][j])
+                                                                                        >> s->sh.chroma_log2_weight_denom) + 128), -128, 127);
+                }
+            } else {
+                s->sh.chroma_weight_l1[i][0] = 1 << s->sh.chroma_log2_weight_denom;
+                s->sh.chroma_offset_l1[i][0] = 0;
+                s->sh.chroma_weight_l1[i][1] = 1 << s->sh.chroma_log2_weight_denom;
+                s->sh.chroma_offset_l1[i][1] = 0;
+            }
+        }
+    }
+}
+
+static int decode_lt_rps(HEVCContext *s, LongTermRPS *rps, GetBitContext *gb)
+{
+    const HEVCSPS *sps = s->ps.sps;
+    int max_poc_lsb    = 1 << sps->log2_max_poc_lsb;
+    int prev_delta_msb = 0;
+    unsigned int nb_sps = 0, nb_sh;
+    int i;
+
+    rps->nb_refs = 0;
+    if (!sps->long_term_ref_pics_present_flag)
+        return 0;
+
+    if (sps->num_long_term_ref_pics_sps > 0)
+        nb_sps = get_ue_golomb_long(gb);
+    nb_sh = get_ue_golomb_long(gb);
+
+    if (nb_sh + nb_sps > FF_ARRAY_ELEMS(rps->poc))
+        return AVERROR_INVALIDDATA;
+
+    rps->nb_refs = nb_sh + nb_sps;
+
+    for (i = 0; i < rps->nb_refs; i++) {
+        uint8_t delta_poc_msb_present;
+
+        if (i < nb_sps) {
+            uint8_t lt_idx_sps = 0;
+
+            if (sps->num_long_term_ref_pics_sps > 1)
+                lt_idx_sps = get_bits(gb, av_ceil_log2(sps->num_long_term_ref_pics_sps));
+
+            rps->poc[i]  = sps->lt_ref_pic_poc_lsb_sps[lt_idx_sps];
+            rps->used[i] = sps->used_by_curr_pic_lt_sps_flag[lt_idx_sps];
+        } else {
+            rps->poc[i]  = get_bits(gb, sps->log2_max_poc_lsb);
+            rps->used[i] = get_bits1(gb);
+        }
+
+        delta_poc_msb_present = get_bits1(gb);
+        if (delta_poc_msb_present) {
+            int delta = get_ue_golomb_long(gb);
+
+            if (i && i != nb_sps)
+                delta += prev_delta_msb;
+
+            rps->poc[i] += s->poc - delta * max_poc_lsb - s->sh.pic_order_cnt_lsb;
+            prev_delta_msb = delta;
+        }
+    }
+
+    return 0;
+}
+
+static void export_stream_params(AVCodecContext *avctx, const HEVCParamSets *ps,
+                                 const HEVCSPS *sps)
+{
+    const HEVCVPS *vps = (const HEVCVPS*)ps->vps_list[sps->vps_id]->data;
+    unsigned int num = 0, den = 0;
+
+    avctx->pix_fmt             = sps->pix_fmt;
+    avctx->coded_width         = sps->width;
+    avctx->coded_height        = sps->height;
+    avctx->width               = sps->output_width;
+    avctx->height              = sps->output_height;
+    avctx->has_b_frames        = sps->temporal_layer[sps->max_sub_layers - 1].num_reorder_pics;
+    avctx->profile             = sps->ptl.general_ptl.profile_idc;
+    avctx->level               = sps->ptl.general_ptl.level_idc;
+
+    ff_set_sar(avctx, sps->vui.sar);
+
+    if (sps->vui.video_signal_type_present_flag)
+        avctx->color_range = sps->vui.video_full_range_flag ? AVCOL_RANGE_JPEG
+                                                            : AVCOL_RANGE_MPEG;
+    else
+        avctx->color_range = AVCOL_RANGE_MPEG;
+
+    if (sps->vui.colour_description_present_flag) {
+        avctx->color_primaries = sps->vui.colour_primaries;
+        avctx->color_trc       = sps->vui.transfer_characteristic;
+        avctx->colorspace      = sps->vui.matrix_coeffs;
+    } else {
+        avctx->color_primaries = AVCOL_PRI_UNSPECIFIED;
+        avctx->color_trc       = AVCOL_TRC_UNSPECIFIED;
+        avctx->colorspace      = AVCOL_SPC_UNSPECIFIED;
+    }
+
+    if (vps->vps_timing_info_present_flag) {
+        num = vps->vps_num_units_in_tick;
+        den = vps->vps_time_scale;
+    } else if (sps->vui.vui_timing_info_present_flag) {
+        num = sps->vui.vui_num_units_in_tick;
+        den = sps->vui.vui_time_scale;
+    }
+
+    if (num != 0 && den != 0)
+        av_reduce(&avctx->framerate.den, &avctx->framerate.num,
+                  num, den, 1 << 30);
+}
+
+static int set_sps(HEVCContext *s, const HEVCSPS *sps)
+{
+    #define HWACCEL_MAX (CONFIG_HEVC_DXVA2_HWACCEL + CONFIG_HEVC_D3D11VA_HWACCEL + CONFIG_HEVC_VDPAU_HWACCEL)
+    enum AVPixelFormat pix_fmts[HWACCEL_MAX + 2], *fmt = pix_fmts;
+    int ret;
+
+    pic_arrays_free(s);
+    s->ps.sps = NULL;
+    s->ps.vps = NULL;
+
+    if (!sps)
+        return 0;
+
+    ret = pic_arrays_init(s, sps);
+    if (ret < 0)
+        goto fail;
+
+    export_stream_params(s->avctx, &s->ps, sps);
+
+    if (sps->pix_fmt == AV_PIX_FMT_YUV420P || sps->pix_fmt == AV_PIX_FMT_YUVJ420P ||
+        sps->pix_fmt == AV_PIX_FMT_YUV420P10) {
+#if CONFIG_HEVC_DXVA2_HWACCEL
+        *fmt++ = AV_PIX_FMT_DXVA2_VLD;
+#endif
+    }
+    if (sps->pix_fmt == AV_PIX_FMT_YUV420P || sps->pix_fmt == AV_PIX_FMT_YUVJ420P) {
+#if CONFIG_HEVC_D3D11VA_HWACCEL
+        *fmt++ = AV_PIX_FMT_D3D11VA_VLD;
+#endif
+#if CONFIG_HEVC_VDPAU_HWACCEL
+        *fmt++ = AV_PIX_FMT_VDPAU;
+#endif
+    }
+
+    *fmt++ = sps->pix_fmt;
+    *fmt = AV_PIX_FMT_NONE;
+
+    ret = ff_get_format(s->avctx, pix_fmts);
+    if (ret < 0)
+        goto fail;
+    s->avctx->pix_fmt = ret;
+
+    ff_hevc_pred_init(&s->hpc,     sps->bit_depth);
+    ff_hevc_dsp_init (&s->hevcdsp, sps->bit_depth);
+    ff_videodsp_init (&s->vdsp,    sps->bit_depth);
+
+    if (sps->sao_enabled && !s->avctx->hwaccel) {
+        av_frame_unref(s->tmp_frame);
+        ret = ff_get_buffer(s->avctx, s->tmp_frame, AV_GET_BUFFER_FLAG_REF);
+        if (ret < 0)
+            goto fail;
+        s->frame = s->tmp_frame;
+    }
+
+    s->ps.sps = sps;
+    s->ps.vps = (HEVCVPS*) s->ps.vps_list[s->ps.sps->vps_id]->data;
+
+    return 0;
+
+fail:
+    pic_arrays_free(s);
+    s->ps.sps = NULL;
+    return ret;
+}
+
+static int hls_slice_header(HEVCContext *s)
+{
+    GetBitContext *gb = &s->HEVClc.gb;
+    SliceHeader *sh   = &s->sh;
+    int i, ret;
+
+    // Coded parameters
+    sh->first_slice_in_pic_flag = get_bits1(gb);
+    if ((IS_IDR(s) || IS_BLA(s)) && sh->first_slice_in_pic_flag) {
+        s->seq_decode = (s->seq_decode + 1) & 0xff;
+        s->max_ra     = INT_MAX;
+        if (IS_IDR(s))
+            ff_hevc_clear_refs(s);
+    }
+    if (IS_IRAP(s))
+        sh->no_output_of_prior_pics_flag = get_bits1(gb);
+
+    sh->pps_id = get_ue_golomb_long(gb);
+    if (sh->pps_id >= MAX_PPS_COUNT || !s->ps.pps_list[sh->pps_id]) {
+        av_log(s->avctx, AV_LOG_ERROR, "PPS id out of range: %d\n", sh->pps_id);
+        return AVERROR_INVALIDDATA;
+    }
+    if (!sh->first_slice_in_pic_flag &&
+        s->ps.pps != (HEVCPPS*)s->ps.pps_list[sh->pps_id]->data) {
+        av_log(s->avctx, AV_LOG_ERROR, "PPS changed between slices.\n");
+        return AVERROR_INVALIDDATA;
+    }
+    s->ps.pps = (HEVCPPS*)s->ps.pps_list[sh->pps_id]->data;
+
+    if (s->ps.sps != (HEVCSPS*)s->ps.sps_list[s->ps.pps->sps_id]->data) {
+        s->ps.sps = (HEVCSPS*)s->ps.sps_list[s->ps.pps->sps_id]->data;
+
+        ff_hevc_clear_refs(s);
+        ret = set_sps(s, s->ps.sps);
+        if (ret < 0)
+            return ret;
+
+        s->seq_decode = (s->seq_decode + 1) & 0xff;
+        s->max_ra     = INT_MAX;
+    }
+
+    sh->dependent_slice_segment_flag = 0;
+    if (!sh->first_slice_in_pic_flag) {
+        int slice_address_length;
+
+        if (s->ps.pps->dependent_slice_segments_enabled_flag)
+            sh->dependent_slice_segment_flag = get_bits1(gb);
+
+        slice_address_length = av_ceil_log2(s->ps.sps->ctb_width *
+                                            s->ps.sps->ctb_height);
+        sh->slice_segment_addr = slice_address_length ? get_bits(gb, slice_address_length) : 0;
+        if (sh->slice_segment_addr >= s->ps.sps->ctb_width * s->ps.sps->ctb_height) {
+            av_log(s->avctx, AV_LOG_ERROR,
+                   "Invalid slice segment address: %u.\n",
+                   sh->slice_segment_addr);
+            return AVERROR_INVALIDDATA;
+        }
+
+        if (!sh->dependent_slice_segment_flag) {
+            sh->slice_addr = sh->slice_segment_addr;
+            s->slice_idx++;
+        }
+    } else {
+        sh->slice_segment_addr = sh->slice_addr = 0;
+        s->slice_idx           = 0;
+        s->slice_initialized   = 0;
+    }
+
+    if (!sh->dependent_slice_segment_flag) {
+        s->slice_initialized = 0;
+
+        for (i = 0; i < s->ps.pps->num_extra_slice_header_bits; i++)
+            skip_bits(gb, 1);  // slice_reserved_undetermined_flag[]
+
+        sh->slice_type = get_ue_golomb_long(gb);
+        if (!(sh->slice_type == I_SLICE ||
+              sh->slice_type == P_SLICE ||
+              sh->slice_type == B_SLICE)) {
+            av_log(s->avctx, AV_LOG_ERROR, "Unknown slice type: %d.\n",
+                   sh->slice_type);
+            return AVERROR_INVALIDDATA;
+        }
+        if (IS_IRAP(s) && sh->slice_type != I_SLICE) {
+            av_log(s->avctx, AV_LOG_ERROR, "Inter slices in an IRAP frame.\n");
+            return AVERROR_INVALIDDATA;
+        }
+
+        // when flag is not present, picture is inferred to be output
+        sh->pic_output_flag = 1;
+        if (s->ps.pps->output_flag_present_flag)
+            sh->pic_output_flag = get_bits1(gb);
+
+        if (s->ps.sps->separate_colour_plane_flag)
+            sh->colour_plane_id = get_bits(gb, 2);
+
+        if (!IS_IDR(s)) {
+            int poc, pos;
+
+            sh->pic_order_cnt_lsb = get_bits(gb, s->ps.sps->log2_max_poc_lsb);
+            poc = ff_hevc_compute_poc(s, sh->pic_order_cnt_lsb);
+            if (!sh->first_slice_in_pic_flag && poc != s->poc) {
+                av_log(s->avctx, AV_LOG_WARNING,
+                       "Ignoring POC change between slices: %d -> %d\n", s->poc, poc);
+                if (s->avctx->err_recognition & AV_EF_EXPLODE)
+                    return AVERROR_INVALIDDATA;
+                poc = s->poc;
+            }
+            s->poc = poc;
+
+            sh->short_term_ref_pic_set_sps_flag = get_bits1(gb);
+            pos = get_bits_left(gb);
+            if (!sh->short_term_ref_pic_set_sps_flag) {
+                ret = ff_hevc_decode_short_term_rps(gb, s->avctx, &sh->slice_rps, s->ps.sps, 1);
+                if (ret < 0)
+                    return ret;
+
+                sh->short_term_rps = &sh->slice_rps;
+            } else {
+                int numbits, rps_idx;
+
+                if (!s->ps.sps->nb_st_rps) {
+                    av_log(s->avctx, AV_LOG_ERROR, "No ref lists in the SPS.\n");
+                    return AVERROR_INVALIDDATA;
+                }
+
+                numbits = av_ceil_log2(s->ps.sps->nb_st_rps);
+                rps_idx = numbits > 0 ? get_bits(gb, numbits) : 0;
+                sh->short_term_rps = &s->ps.sps->st_rps[rps_idx];
+            }
+            sh->short_term_ref_pic_set_size = pos - get_bits_left(gb);
+
+            pos = get_bits_left(gb);
+            ret = decode_lt_rps(s, &sh->long_term_rps, gb);
+            if (ret < 0) {
+                av_log(s->avctx, AV_LOG_WARNING, "Invalid long term RPS.\n");
+                if (s->avctx->err_recognition & AV_EF_EXPLODE)
+                    return AVERROR_INVALIDDATA;
+            }
+            sh->long_term_ref_pic_set_size = pos - get_bits_left(gb);
+
+            if (s->ps.sps->sps_temporal_mvp_enabled_flag)
+                sh->slice_temporal_mvp_enabled_flag = get_bits1(gb);
+            else
+                sh->slice_temporal_mvp_enabled_flag = 0;
+        } else {
+            s->sh.short_term_rps = NULL;
+            s->poc               = 0;
+        }
+
+        /* 8.3.1 */
+        if (s->temporal_id == 0 &&
+            s->nal_unit_type != NAL_TRAIL_N &&
+            s->nal_unit_type != NAL_TSA_N   &&
+            s->nal_unit_type != NAL_STSA_N  &&
+            s->nal_unit_type != NAL_RADL_N  &&
+            s->nal_unit_type != NAL_RADL_R  &&
+            s->nal_unit_type != NAL_RASL_N  &&
+            s->nal_unit_type != NAL_RASL_R)
+            s->pocTid0 = s->poc;
+
+        if (s->ps.sps->sao_enabled) {
+            sh->slice_sample_adaptive_offset_flag[0] = get_bits1(gb);
+            sh->slice_sample_adaptive_offset_flag[1] =
+            sh->slice_sample_adaptive_offset_flag[2] = get_bits1(gb);
+        } else {
+            sh->slice_sample_adaptive_offset_flag[0] = 0;
+            sh->slice_sample_adaptive_offset_flag[1] = 0;
+            sh->slice_sample_adaptive_offset_flag[2] = 0;
+        }
+
+        sh->nb_refs[L0] = sh->nb_refs[L1] = 0;
+        if (sh->slice_type == P_SLICE || sh->slice_type == B_SLICE) {
+            int nb_refs;
+
+            sh->nb_refs[L0] = s->ps.pps->num_ref_idx_l0_default_active;
+            if (sh->slice_type == B_SLICE)
+                sh->nb_refs[L1] = s->ps.pps->num_ref_idx_l1_default_active;
+
+            if (get_bits1(gb)) { // num_ref_idx_active_override_flag
+                sh->nb_refs[L0] = get_ue_golomb_long(gb) + 1;
+                if (sh->slice_type == B_SLICE)
+                    sh->nb_refs[L1] = get_ue_golomb_long(gb) + 1;
+            }
+            if (sh->nb_refs[L0] > MAX_REFS || sh->nb_refs[L1] > MAX_REFS) {
+                av_log(s->avctx, AV_LOG_ERROR, "Too many refs: %d/%d.\n",
+                       sh->nb_refs[L0], sh->nb_refs[L1]);
+                return AVERROR_INVALIDDATA;
+            }
+
+            sh->rpl_modification_flag[0] = 0;
+            sh->rpl_modification_flag[1] = 0;
+            nb_refs = ff_hevc_frame_nb_refs(s);
+            if (!nb_refs) {
+                av_log(s->avctx, AV_LOG_ERROR, "Zero refs for a frame with P or B slices.\n");
+                return AVERROR_INVALIDDATA;
+            }
+
+            if (s->ps.pps->lists_modification_present_flag && nb_refs > 1) {
+                sh->rpl_modification_flag[0] = get_bits1(gb);
+                if (sh->rpl_modification_flag[0]) {
+                    for (i = 0; i < sh->nb_refs[L0]; i++)
+                        sh->list_entry_lx[0][i] = get_bits(gb, av_ceil_log2(nb_refs));
+                }
+
+                if (sh->slice_type == B_SLICE) {
+                    sh->rpl_modification_flag[1] = get_bits1(gb);
+                    if (sh->rpl_modification_flag[1] == 1)
+                        for (i = 0; i < sh->nb_refs[L1]; i++)
+                            sh->list_entry_lx[1][i] = get_bits(gb, av_ceil_log2(nb_refs));
+                }
+            }
+
+            if (sh->slice_type == B_SLICE)
+                sh->mvd_l1_zero_flag = get_bits1(gb);
+
+            if (s->ps.pps->cabac_init_present_flag)
+                sh->cabac_init_flag = get_bits1(gb);
+            else
+                sh->cabac_init_flag = 0;
+
+            sh->collocated_ref_idx = 0;
+            if (sh->slice_temporal_mvp_enabled_flag) {
+                sh->collocated_list = L0;
+                if (sh->slice_type == B_SLICE)
+                    sh->collocated_list = !get_bits1(gb);
+
+                if (sh->nb_refs[sh->collocated_list] > 1) {
+                    sh->collocated_ref_idx = get_ue_golomb_long(gb);
+                    if (sh->collocated_ref_idx >= sh->nb_refs[sh->collocated_list]) {
+                        av_log(s->avctx, AV_LOG_ERROR,
+                               "Invalid collocated_ref_idx: %d.\n",
+                               sh->collocated_ref_idx);
+                        return AVERROR_INVALIDDATA;
+                    }
+                }
+            }
+
+            if ((s->ps.pps->weighted_pred_flag   && sh->slice_type == P_SLICE) ||
+                (s->ps.pps->weighted_bipred_flag && sh->slice_type == B_SLICE)) {
+                pred_weight_table(s, gb);
+            }
+
+            sh->max_num_merge_cand = 5 - get_ue_golomb_long(gb);
+            if (sh->max_num_merge_cand < 1 || sh->max_num_merge_cand > 5) {
+                av_log(s->avctx, AV_LOG_ERROR,
+                       "Invalid number of merging MVP candidates: %d.\n",
+                       sh->max_num_merge_cand);
+                return AVERROR_INVALIDDATA;
+            }
+        }
+
+        sh->slice_qp_delta = get_se_golomb(gb);
+
+        if (s->ps.pps->pic_slice_level_chroma_qp_offsets_present_flag) {
+            sh->slice_cb_qp_offset = get_se_golomb(gb);
+            sh->slice_cr_qp_offset = get_se_golomb(gb);
+        } else {
+            sh->slice_cb_qp_offset = 0;
+            sh->slice_cr_qp_offset = 0;
+        }
+
+        if (s->ps.pps->deblocking_filter_control_present_flag) {
+            int deblocking_filter_override_flag = 0;
+
+            if (s->ps.pps->deblocking_filter_override_enabled_flag)
+                deblocking_filter_override_flag = get_bits1(gb);
+
+            if (deblocking_filter_override_flag) {
+                sh->disable_deblocking_filter_flag = get_bits1(gb);
+                if (!sh->disable_deblocking_filter_flag) {
+                    sh->beta_offset = get_se_golomb(gb) * 2;
+                    sh->tc_offset   = get_se_golomb(gb) * 2;
+                }
+            } else {
+                sh->disable_deblocking_filter_flag = s->ps.pps->disable_dbf;
+                sh->beta_offset                    = s->ps.pps->beta_offset;
+                sh->tc_offset                      = s->ps.pps->tc_offset;
+            }
+        } else {
+            sh->disable_deblocking_filter_flag = 0;
+            sh->beta_offset                    = 0;
+            sh->tc_offset                      = 0;
+        }
+
+        if (s->ps.pps->seq_loop_filter_across_slices_enabled_flag &&
+            (sh->slice_sample_adaptive_offset_flag[0] ||
+             sh->slice_sample_adaptive_offset_flag[1] ||
+             !sh->disable_deblocking_filter_flag)) {
+            sh->slice_loop_filter_across_slices_enabled_flag = get_bits1(gb);
+        } else {
+            sh->slice_loop_filter_across_slices_enabled_flag = s->ps.pps->seq_loop_filter_across_slices_enabled_flag;
+        }
+    } else if (!s->slice_initialized) {
+        av_log(s->avctx, AV_LOG_ERROR, "Independent slice segment missing.\n");
+        return AVERROR_INVALIDDATA;
+    }
+
+    sh->num_entry_point_offsets = 0;
+    if (s->ps.pps->tiles_enabled_flag || s->ps.pps->entropy_coding_sync_enabled_flag) {
+        sh->num_entry_point_offsets = get_ue_golomb_long(gb);
+        if (sh->num_entry_point_offsets > 0) {
+            int offset_len = get_ue_golomb_long(gb) + 1;
+
+            for (i = 0; i < sh->num_entry_point_offsets; i++)
+                skip_bits(gb, offset_len);
+        }
+    }
+
+    if (s->ps.pps->slice_header_extension_present_flag) {
+        unsigned int length = get_ue_golomb_long(gb);
+        for (i = 0; i < length; i++)
+            skip_bits(gb, 8);  // slice_header_extension_data_byte
+    }
+
+    // Inferred parameters
+    sh->slice_qp = 26 + s->ps.pps->pic_init_qp_minus26 + sh->slice_qp_delta;
+    if (sh->slice_qp > 51 ||
+        sh->slice_qp < -s->ps.sps->qp_bd_offset) {
+        av_log(s->avctx, AV_LOG_ERROR,
+               "The slice_qp %d is outside the valid range "
+               "[%d, 51].\n",
+               sh->slice_qp,
+               -s->ps.sps->qp_bd_offset);
+        return AVERROR_INVALIDDATA;
+    }
+
+    sh->slice_ctb_addr_rs = sh->slice_segment_addr;
+
+    if (!s->sh.slice_ctb_addr_rs && s->sh.dependent_slice_segment_flag) {
+        av_log(s->avctx, AV_LOG_ERROR, "Impossible slice segment.\n");
+        return AVERROR_INVALIDDATA;
+    }
+
+    s->HEVClc.first_qp_group = !s->sh.dependent_slice_segment_flag;
+
+    if (!s->ps.pps->cu_qp_delta_enabled_flag)
+        s->HEVClc.qp_y = FFUMOD(s->sh.slice_qp + 52 + 2 * s->ps.sps->qp_bd_offset,
+                                52 + s->ps.sps->qp_bd_offset) - s->ps.sps->qp_bd_offset;
+
+    s->slice_initialized = 1;
+
+    return 0;
+}
+
+#define CTB(tab, x, y) ((tab)[(y) * s->ps.sps->ctb_width + (x)])
+
+#define SET_SAO(elem, value)                            \
+do {                                                    \
+    if (!sao_merge_up_flag && !sao_merge_left_flag)     \
+        sao->elem = value;                              \
+    else if (sao_merge_left_flag)                       \
+        sao->elem = CTB(s->sao, rx-1, ry).elem;         \
+    else if (sao_merge_up_flag)                         \
+        sao->elem = CTB(s->sao, rx, ry-1).elem;         \
+    else                                                \
+        sao->elem = 0;                                  \
+} while (0)
+
+static void hls_sao_param(HEVCContext *s, int rx, int ry)
+{
+    HEVCLocalContext *lc    = &s->HEVClc;
+    int sao_merge_left_flag = 0;
+    int sao_merge_up_flag   = 0;
+    int shift               = s->ps.sps->bit_depth - FFMIN(s->ps.sps->bit_depth, 10);
+    SAOParams *sao          = &CTB(s->sao, rx, ry);
+    int c_idx, i;
+
+    if (s->sh.slice_sample_adaptive_offset_flag[0] ||
+        s->sh.slice_sample_adaptive_offset_flag[1]) {
+        if (rx > 0) {
+            if (lc->ctb_left_flag)
+                sao_merge_left_flag = ff_hevc_sao_merge_flag_decode(s);
+        }
+        if (ry > 0 && !sao_merge_left_flag) {
+            if (lc->ctb_up_flag)
+                sao_merge_up_flag = ff_hevc_sao_merge_flag_decode(s);
+        }
+    }
+
+    for (c_idx = 0; c_idx < 3; c_idx++) {
+        if (!s->sh.slice_sample_adaptive_offset_flag[c_idx]) {
+            sao->type_idx[c_idx] = SAO_NOT_APPLIED;
+            continue;
+        }
+
+        if (c_idx == 2) {
+            sao->type_idx[2] = sao->type_idx[1];
+            sao->eo_class[2] = sao->eo_class[1];
+        } else {
+            SET_SAO(type_idx[c_idx], ff_hevc_sao_type_idx_decode(s));
+        }
+
+        if (sao->type_idx[c_idx] == SAO_NOT_APPLIED)
+            continue;
+
+        for (i = 0; i < 4; i++)
+            SET_SAO(offset_abs[c_idx][i], ff_hevc_sao_offset_abs_decode(s));
+
+        if (sao->type_idx[c_idx] == SAO_BAND) {
+            for (i = 0; i < 4; i++) {
+                if (sao->offset_abs[c_idx][i]) {
+                    SET_SAO(offset_sign[c_idx][i],
+                            ff_hevc_sao_offset_sign_decode(s));
+                } else {
+                    sao->offset_sign[c_idx][i] = 0;
+                }
+            }
+            SET_SAO(band_position[c_idx], ff_hevc_sao_band_position_decode(s));
+        } else if (c_idx != 2) {
+            SET_SAO(eo_class[c_idx], ff_hevc_sao_eo_class_decode(s));
+        }
+
+        // Inferred parameters
+        sao->offset_val[c_idx][0] = 0;
+        for (i = 0; i < 4; i++) {
+            sao->offset_val[c_idx][i + 1] = sao->offset_abs[c_idx][i] << shift;
+            if (sao->type_idx[c_idx] == SAO_EDGE) {
+                if (i > 1)
+                    sao->offset_val[c_idx][i + 1] = -sao->offset_val[c_idx][i + 1];
+            } else if (sao->offset_sign[c_idx][i]) {
+                sao->offset_val[c_idx][i + 1] = -sao->offset_val[c_idx][i + 1];
+            }
+        }
+    }
+}
+
+#undef SET_SAO
+#undef CTB
+
+static void hls_residual_coding(HEVCContext *s, int x0, int y0,
+                                int log2_trafo_size, enum ScanType scan_idx,
+                                int c_idx)
+{
+#define GET_COORD(offset, n)                                    \
+    do {                                                        \
+        x_c = (scan_x_cg[offset >> 4] << 2) + scan_x_off[n];    \
+        y_c = (scan_y_cg[offset >> 4] << 2) + scan_y_off[n];    \
+    } while (0)
+    HEVCLocalContext *lc    = &s->HEVClc;
+    int transform_skip_flag = 0;
+
+    int last_significant_coeff_x, last_significant_coeff_y;
+    int last_scan_pos;
+    int n_end;
+    int num_coeff    = 0;
+    int greater1_ctx = 1;
+
+    int num_last_subset;
+    int x_cg_last_sig, y_cg_last_sig;
+
+    const uint8_t *scan_x_cg, *scan_y_cg, *scan_x_off, *scan_y_off;
+
+    ptrdiff_t stride = s->frame->linesize[c_idx];
+    int hshift       = s->ps.sps->hshift[c_idx];
+    int vshift       = s->ps.sps->vshift[c_idx];
+    uint8_t *dst     = &s->frame->data[c_idx][(y0 >> vshift) * stride +
+                                              ((x0 >> hshift) << s->ps.sps->pixel_shift)];
+    DECLARE_ALIGNED(32, int16_t, coeffs[MAX_TB_SIZE * MAX_TB_SIZE]) = { 0 };
+    DECLARE_ALIGNED(8, uint8_t, significant_coeff_group_flag[8][8]) = { { 0 } };
+
+    int trafo_size = 1 << log2_trafo_size;
+    int i, qp, shift, add, scale, scale_m;
+    static const uint8_t level_scale[] = { 40, 45, 51, 57, 64, 72 };
+    const uint8_t *scale_matrix;
+    uint8_t dc_scale;
+
+    // Derive QP for dequant
+    if (!lc->cu.cu_transquant_bypass_flag) {
+        static const int qp_c[] = {
+            29, 30, 31, 32, 33, 33, 34, 34, 35, 35, 36, 36, 37, 37
+        };
+
+        static const uint8_t rem6[51 + 2 * 6 + 1] = {
+            0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2,
+            3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5,
+            0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3,
+        };
+
+        static const uint8_t div6[51 + 2 * 6 + 1] = {
+            0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2,  3,  3,  3,
+            3, 3, 3, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 6, 6, 6,  6,  6,  6,
+            7, 7, 7, 7, 7, 7, 8, 8, 8, 8, 8, 8, 9, 9, 9, 9, 9, 9, 10, 10, 10, 10,
+        };
+        int qp_y = lc->qp_y;
+
+        if (c_idx == 0) {
+            qp = qp_y + s->ps.sps->qp_bd_offset;
+        } else {
+            int qp_i, offset;
+
+            if (c_idx == 1)
+                offset = s->ps.pps->cb_qp_offset + s->sh.slice_cb_qp_offset;
+            else
+                offset = s->ps.pps->cr_qp_offset + s->sh.slice_cr_qp_offset;
+
+            qp_i = av_clip(qp_y + offset, -s->ps.sps->qp_bd_offset, 57);
+            if (qp_i < 30)
+                qp = qp_i;
+            else if (qp_i > 43)
+                qp = qp_i - 6;
+            else
+                qp = qp_c[qp_i - 30];
+
+            qp += s->ps.sps->qp_bd_offset;
+        }
+
+        shift    = s->ps.sps->bit_depth + log2_trafo_size - 5;
+        add      = 1 << (shift - 1);
+        scale    = level_scale[rem6[qp]] << (div6[qp]);
+        scale_m  = 16; // default when no custom scaling lists.
+        dc_scale = 16;
+
+        if (s->ps.sps->scaling_list_enable_flag) {
+            const ScalingList *sl = s->ps.pps->scaling_list_data_present_flag ?
+                                    &s->ps.pps->scaling_list : &s->ps.sps->scaling_list;
+            int matrix_id = lc->cu.pred_mode != MODE_INTRA;
+
+            if (log2_trafo_size != 5)
+                matrix_id = 3 * matrix_id + c_idx;
+
+            scale_matrix = sl->sl[log2_trafo_size - 2][matrix_id];
+            if (log2_trafo_size >= 4)
+                dc_scale = sl->sl_dc[log2_trafo_size - 4][matrix_id];
+        }
+    }
+
+    if (s->ps.pps->transform_skip_enabled_flag &&
+        !lc->cu.cu_transquant_bypass_flag   &&
+        log2_trafo_size == 2) {
+        transform_skip_flag = ff_hevc_transform_skip_flag_decode(s, c_idx);
+    }
+
+    last_significant_coeff_x =
+        ff_hevc_last_significant_coeff_x_prefix_decode(s, c_idx, log2_trafo_size);
+    last_significant_coeff_y =
+        ff_hevc_last_significant_coeff_y_prefix_decode(s, c_idx, log2_trafo_size);
+
+    if (last_significant_coeff_x > 3) {
+        int suffix = ff_hevc_last_significant_coeff_suffix_decode(s, last_significant_coeff_x);
+        last_significant_coeff_x = (1 << ((last_significant_coeff_x >> 1) - 1)) *
+                                   (2 + (last_significant_coeff_x & 1)) +
+                                   suffix;
+    }
+
+    if (last_significant_coeff_y > 3) {
+        int suffix = ff_hevc_last_significant_coeff_suffix_decode(s, last_significant_coeff_y);
+        last_significant_coeff_y = (1 << ((last_significant_coeff_y >> 1) - 1)) *
+                                   (2 + (last_significant_coeff_y & 1)) +
+                                   suffix;
+    }
+
+    if (scan_idx == SCAN_VERT)
+        FFSWAP(int, last_significant_coeff_x, last_significant_coeff_y);
+
+    x_cg_last_sig = last_significant_coeff_x >> 2;
+    y_cg_last_sig = last_significant_coeff_y >> 2;
+
+    switch (scan_idx) {
+    case SCAN_DIAG: {
+        int last_x_c = last_significant_coeff_x & 3;
+        int last_y_c = last_significant_coeff_y & 3;
+
+        scan_x_off = ff_hevc_diag_scan4x4_x;
+        scan_y_off = ff_hevc_diag_scan4x4_y;
+        num_coeff  = diag_scan4x4_inv[last_y_c][last_x_c];
+        if (trafo_size == 4) {
+            scan_x_cg = scan_1x1;
+            scan_y_cg = scan_1x1;
+        } else if (trafo_size == 8) {
+            num_coeff += diag_scan2x2_inv[y_cg_last_sig][x_cg_last_sig] << 4;
+            scan_x_cg  = diag_scan2x2_x;
+            scan_y_cg  = diag_scan2x2_y;
+        } else if (trafo_size == 16) {
+            num_coeff += diag_scan4x4_inv[y_cg_last_sig][x_cg_last_sig] << 4;
+            scan_x_cg  = ff_hevc_diag_scan4x4_x;
+            scan_y_cg  = ff_hevc_diag_scan4x4_y;
+        } else { // trafo_size == 32
+            num_coeff += diag_scan8x8_inv[y_cg_last_sig][x_cg_last_sig] << 4;
+            scan_x_cg  = ff_hevc_diag_scan8x8_x;
+            scan_y_cg  = ff_hevc_diag_scan8x8_y;
+        }
+        break;
+    }
+    case SCAN_HORIZ:
+        scan_x_cg  = horiz_scan2x2_x;
+        scan_y_cg  = horiz_scan2x2_y;
+        scan_x_off = horiz_scan4x4_x;
+        scan_y_off = horiz_scan4x4_y;
+        num_coeff  = horiz_scan8x8_inv[last_significant_coeff_y][last_significant_coeff_x];
+        break;
+    default: //SCAN_VERT
+        scan_x_cg  = horiz_scan2x2_y;
+        scan_y_cg  = horiz_scan2x2_x;
+        scan_x_off = horiz_scan4x4_y;
+        scan_y_off = horiz_scan4x4_x;
+        num_coeff  = horiz_scan8x8_inv[last_significant_coeff_x][last_significant_coeff_y];
+        break;
+    }
+    num_coeff++;
+    num_last_subset = (num_coeff - 1) >> 4;
+
+    for (i = num_last_subset; i >= 0; i--) {
+        int n, m;
+        int x_cg, y_cg, x_c, y_c;
+        int implicit_non_zero_coeff = 0;
+        int64_t trans_coeff_level;
+        int prev_sig = 0;
+        int offset   = i << 4;
+
+        uint8_t significant_coeff_flag_idx[16];
+        uint8_t nb_significant_coeff_flag = 0;
+
+        x_cg = scan_x_cg[i];
+        y_cg = scan_y_cg[i];
+
+        if (i < num_last_subset && i > 0) {
+            int ctx_cg = 0;
+            if (x_cg < (1 << (log2_trafo_size - 2)) - 1)
+                ctx_cg += significant_coeff_group_flag[x_cg + 1][y_cg];
+            if (y_cg < (1 << (log2_trafo_size - 2)) - 1)
+                ctx_cg += significant_coeff_group_flag[x_cg][y_cg + 1];
+
+            significant_coeff_group_flag[x_cg][y_cg] =
+                ff_hevc_significant_coeff_group_flag_decode(s, c_idx, ctx_cg);
+            implicit_non_zero_coeff = 1;
+        } else {
+            significant_coeff_group_flag[x_cg][y_cg] =
+                ((x_cg == x_cg_last_sig && y_cg == y_cg_last_sig) ||
+                 (x_cg == 0 && y_cg == 0));
+        }
+
+        last_scan_pos = num_coeff - offset - 1;
+
+        if (i == num_last_subset) {
+            n_end                         = last_scan_pos - 1;
+            significant_coeff_flag_idx[0] = last_scan_pos;
+            nb_significant_coeff_flag     = 1;
+        } else {
+            n_end = 15;
+        }
+
+        if (x_cg < ((1 << log2_trafo_size) - 1) >> 2)
+            prev_sig = significant_coeff_group_flag[x_cg + 1][y_cg];
+        if (y_cg < ((1 << log2_trafo_size) - 1) >> 2)
+            prev_sig += significant_coeff_group_flag[x_cg][y_cg + 1] << 1;
+
+        for (n = n_end; n >= 0; n--) {
+            GET_COORD(offset, n);
+
+            if (significant_coeff_group_flag[x_cg][y_cg] &&
+                (n > 0 || implicit_non_zero_coeff == 0)) {
+                if (ff_hevc_significant_coeff_flag_decode(s, c_idx, x_c, y_c,
+                                                          log2_trafo_size,
+                                                          scan_idx,
+                                                          prev_sig) == 1) {
+                    significant_coeff_flag_idx[nb_significant_coeff_flag] = n;
+                    nb_significant_coeff_flag++;
+                    implicit_non_zero_coeff = 0;
+                }
+            } else {
+                int last_cg = (x_c == (x_cg << 2) && y_c == (y_cg << 2));
+                if (last_cg && implicit_non_zero_coeff && significant_coeff_group_flag[x_cg][y_cg]) {
+                    significant_coeff_flag_idx[nb_significant_coeff_flag] = n;
+                    nb_significant_coeff_flag++;
+                }
+            }
+        }
+
+        n_end = nb_significant_coeff_flag;
+
+        if (n_end) {
+            int first_nz_pos_in_cg = 16;
+            int last_nz_pos_in_cg = -1;
+            int c_rice_param = 0;
+            int first_greater1_coeff_idx = -1;
+            uint8_t coeff_abs_level_greater1_flag[16] = { 0 };
+            uint16_t coeff_sign_flag;
+            int sum_abs = 0;
+            int sign_hidden = 0;
+
+            // initialize first elem of coeff_bas_level_greater1_flag
+            int ctx_set = (i > 0 && c_idx == 0) ? 2 : 0;
+
+            if (!(i == num_last_subset) && greater1_ctx == 0)
+                ctx_set++;
+            greater1_ctx      = 1;
+            last_nz_pos_in_cg = significant_coeff_flag_idx[0];
+
+            for (m = 0; m < (n_end > 8 ? 8 : n_end); m++) {
+                int n_idx = significant_coeff_flag_idx[m];
+                int inc   = (ctx_set << 2) + greater1_ctx;
+                coeff_abs_level_greater1_flag[n_idx] =
+                    ff_hevc_coeff_abs_level_greater1_flag_decode(s, c_idx, inc);
+                if (coeff_abs_level_greater1_flag[n_idx]) {
+                    greater1_ctx = 0;
+                } else if (greater1_ctx > 0 && greater1_ctx < 3) {
+                    greater1_ctx++;
+                }
+
+                if (coeff_abs_level_greater1_flag[n_idx] &&
+                    first_greater1_coeff_idx == -1)
+                    first_greater1_coeff_idx = n_idx;
+            }
+            first_nz_pos_in_cg = significant_coeff_flag_idx[n_end - 1];
+            sign_hidden        = last_nz_pos_in_cg - first_nz_pos_in_cg >= 4 &&
+                                 !lc->cu.cu_transquant_bypass_flag;
+
+            if (first_greater1_coeff_idx != -1) {
+                coeff_abs_level_greater1_flag[first_greater1_coeff_idx] += ff_hevc_coeff_abs_level_greater2_flag_decode(s, c_idx, ctx_set);
+            }
+            if (!s->ps.pps->sign_data_hiding_flag || !sign_hidden) {
+                coeff_sign_flag = ff_hevc_coeff_sign_flag(s, nb_significant_coeff_flag) << (16 - nb_significant_coeff_flag);
+            } else {
+                coeff_sign_flag = ff_hevc_coeff_sign_flag(s, nb_significant_coeff_flag - 1) << (16 - (nb_significant_coeff_flag - 1));
+            }
+
+            for (m = 0; m < n_end; m++) {
+                n = significant_coeff_flag_idx[m];
+                GET_COORD(offset, n);
+                trans_coeff_level = 1 + coeff_abs_level_greater1_flag[n];
+                if (trans_coeff_level == ((m < 8) ?
+                                          ((n == first_greater1_coeff_idx) ? 3 : 2) : 1)) {
+                    int last_coeff_abs_level_remaining = ff_hevc_coeff_abs_level_remaining(s, trans_coeff_level, c_rice_param);
+
+                    trans_coeff_level += last_coeff_abs_level_remaining;
+                    if ((trans_coeff_level) > (3 * (1 << c_rice_param)))
+                        c_rice_param = FFMIN(c_rice_param + 1, 4);
+                }
+                if (s->ps.pps->sign_data_hiding_flag && sign_hidden) {
+                    sum_abs += trans_coeff_level;
+                    if (n == first_nz_pos_in_cg && ((sum_abs & 1) == 1))
+                        trans_coeff_level = -trans_coeff_level;
+                }
+                if (coeff_sign_flag >> 15)
+                    trans_coeff_level = -trans_coeff_level;
+                coeff_sign_flag <<= 1;
+                if (!lc->cu.cu_transquant_bypass_flag) {
+                    if (s->ps.sps->scaling_list_enable_flag) {
+                        if (y_c || x_c || log2_trafo_size < 4) {
+                            int pos;
+                            switch (log2_trafo_size) {
+                            case 3:  pos = (y_c        << 3) +  x_c;       break;
+                            case 4:  pos = ((y_c >> 1) << 3) + (x_c >> 1); break;
+                            case 5:  pos = ((y_c >> 2) << 3) + (x_c >> 2); break;
+                            default: pos = (y_c        << 2) +  x_c;
+                            }
+                            scale_m = scale_matrix[pos];
+                        } else {
+                            scale_m = dc_scale;
+                        }
+                    }
+                    trans_coeff_level = (trans_coeff_level * (int64_t)scale * (int64_t)scale_m + add) >> shift;
+                    if(trans_coeff_level < 0) {
+                        if((~trans_coeff_level) & 0xFffffffffff8000)
+                            trans_coeff_level = -32768;
+                    } else {
+                        if (trans_coeff_level & 0xffffffffffff8000)
+                            trans_coeff_level = 32767;
+                    }
+                }
+                coeffs[y_c * trafo_size + x_c] = trans_coeff_level;
+            }
+        }
+    }
+
+    if (!lc->cu.cu_transquant_bypass_flag) {
+        if (transform_skip_flag)
+            s->hevcdsp.dequant(coeffs);
+        else if (lc->cu.pred_mode == MODE_INTRA && c_idx == 0 &&
+                 log2_trafo_size == 2)
+            s->hevcdsp.transform_4x4_luma(coeffs);
+        else {
+            int max_xy = FFMAX(last_significant_coeff_x, last_significant_coeff_y);
+            if (max_xy == 0)
+                s->hevcdsp.idct_dc[log2_trafo_size - 2](coeffs);
+            else {
+                int col_limit = last_significant_coeff_x + last_significant_coeff_y + 4;
+                if (max_xy < 4)
+                    col_limit = FFMIN(4, col_limit);
+                else if (max_xy < 8)
+                    col_limit = FFMIN(8, col_limit);
+                else if (max_xy < 12)
+                    col_limit = FFMIN(24, col_limit);
+                s->hevcdsp.idct[log2_trafo_size - 2](coeffs, col_limit);
+            }
+        }
+    }
+    s->hevcdsp.add_residual[log2_trafo_size - 2](dst, coeffs, stride);
+}
+
+static int hls_transform_unit(HEVCContext *s, int x0, int y0,
+                              int xBase, int yBase, int cb_xBase, int cb_yBase,
+                              int log2_cb_size, int log2_trafo_size,
+                              int blk_idx, int cbf_luma, int cbf_cb, int cbf_cr)
+{
+    HEVCLocalContext *lc = &s->HEVClc;
+
+    if (lc->cu.pred_mode == MODE_INTRA) {
+        int trafo_size = 1 << log2_trafo_size;
+        ff_hevc_set_neighbour_available(s, x0, y0, trafo_size, trafo_size);
+
+        s->hpc.intra_pred[log2_trafo_size - 2](s, x0, y0, 0);
+        if (log2_trafo_size > 2) {
+            trafo_size = trafo_size << (s->ps.sps->hshift[1] - 1);
+            ff_hevc_set_neighbour_available(s, x0, y0, trafo_size, trafo_size);
+            s->hpc.intra_pred[log2_trafo_size - 3](s, x0, y0, 1);
+            s->hpc.intra_pred[log2_trafo_size - 3](s, x0, y0, 2);
+        } else if (blk_idx == 3) {
+            trafo_size = trafo_size << s->ps.sps->hshift[1];
+            ff_hevc_set_neighbour_available(s, xBase, yBase,
+                                            trafo_size, trafo_size);
+            s->hpc.intra_pred[log2_trafo_size - 2](s, xBase, yBase, 1);
+            s->hpc.intra_pred[log2_trafo_size - 2](s, xBase, yBase, 2);
+        }
+    }
+
+    if (cbf_luma || cbf_cb || cbf_cr) {
+        int scan_idx   = SCAN_DIAG;
+        int scan_idx_c = SCAN_DIAG;
+
+        if (s->ps.pps->cu_qp_delta_enabled_flag && !lc->tu.is_cu_qp_delta_coded) {
+            lc->tu.cu_qp_delta = ff_hevc_cu_qp_delta_abs(s);
+            if (lc->tu.cu_qp_delta != 0)
+                if (ff_hevc_cu_qp_delta_sign_flag(s) == 1)
+                    lc->tu.cu_qp_delta = -lc->tu.cu_qp_delta;
+            lc->tu.is_cu_qp_delta_coded = 1;
+
+            if (lc->tu.cu_qp_delta < -(26 + s->ps.sps->qp_bd_offset / 2) ||
+                lc->tu.cu_qp_delta >  (25 + s->ps.sps->qp_bd_offset / 2)) {
+                av_log(s->avctx, AV_LOG_ERROR,
+                       "The cu_qp_delta %d is outside the valid range "
+                       "[%d, %d].\n",
+                       lc->tu.cu_qp_delta,
+                       -(26 + s->ps.sps->qp_bd_offset / 2),
+                        (25 + s->ps.sps->qp_bd_offset / 2));
+                return AVERROR_INVALIDDATA;
+            }
+
+            ff_hevc_set_qPy(s, x0, y0, cb_xBase, cb_yBase, log2_cb_size);
+        }
+
+        if (lc->cu.pred_mode == MODE_INTRA && log2_trafo_size < 4) {
+            if (lc->tu.cur_intra_pred_mode >= 6 &&
+                lc->tu.cur_intra_pred_mode <= 14) {
+                scan_idx = SCAN_VERT;
+            } else if (lc->tu.cur_intra_pred_mode >= 22 &&
+                       lc->tu.cur_intra_pred_mode <= 30) {
+                scan_idx = SCAN_HORIZ;
+            }
+
+            if (lc->pu.intra_pred_mode_c >=  6 &&
+                lc->pu.intra_pred_mode_c <= 14) {
+                scan_idx_c = SCAN_VERT;
+            } else if (lc->pu.intra_pred_mode_c >= 22 &&
+                       lc->pu.intra_pred_mode_c <= 30) {
+                scan_idx_c = SCAN_HORIZ;
+            }
+        }
+
+        if (cbf_luma)
+            hls_residual_coding(s, x0, y0, log2_trafo_size, scan_idx, 0);
+        if (log2_trafo_size > 2) {
+            if (cbf_cb)
+                hls_residual_coding(s, x0, y0, log2_trafo_size - 1, scan_idx_c, 1);
+            if (cbf_cr)
+                hls_residual_coding(s, x0, y0, log2_trafo_size - 1, scan_idx_c, 2);
+        } else if (blk_idx == 3) {
+            if (cbf_cb)
+                hls_residual_coding(s, xBase, yBase, log2_trafo_size, scan_idx_c, 1);
+            if (cbf_cr)
+                hls_residual_coding(s, xBase, yBase, log2_trafo_size, scan_idx_c, 2);
+        }
+    }
+    return 0;
+}
+
+static void set_deblocking_bypass(HEVCContext *s, int x0, int y0, int log2_cb_size)
+{
+    int cb_size          = 1 << log2_cb_size;
+    int log2_min_pu_size = s->ps.sps->log2_min_pu_size;
+
+    int min_pu_width     = s->ps.sps->min_pu_width;
+    int x_end = FFMIN(x0 + cb_size, s->ps.sps->width);
+    int y_end = FFMIN(y0 + cb_size, s->ps.sps->height);
+    int i, j;
+
+    for (j = (y0 >> log2_min_pu_size); j < (y_end >> log2_min_pu_size); j++)
+        for (i = (x0 >> log2_min_pu_size); i < (x_end >> log2_min_pu_size); i++)
+            s->is_pcm[i + j * min_pu_width] = 2;
+}
+
+static int hls_transform_tree(HEVCContext *s, int x0, int y0,
+                              int xBase, int yBase, int cb_xBase, int cb_yBase,
+                              int log2_cb_size, int log2_trafo_size,
+                              int trafo_depth, int blk_idx,
+                              int cbf_cb, int cbf_cr)
+{
+    HEVCLocalContext *lc = &s->HEVClc;
+    uint8_t split_transform_flag;
+    int ret;
+
+    if (lc->cu.intra_split_flag) {
+        if (trafo_depth == 1)
+            lc->tu.cur_intra_pred_mode = lc->pu.intra_pred_mode[blk_idx];
+    } else {
+        lc->tu.cur_intra_pred_mode = lc->pu.intra_pred_mode[0];
+    }
+
+    if (log2_trafo_size <= s->ps.sps->log2_max_trafo_size &&
+        log2_trafo_size >  s->ps.sps->log2_min_tb_size    &&
+        trafo_depth     < lc->cu.max_trafo_depth       &&
+        !(lc->cu.intra_split_flag && trafo_depth == 0)) {
+        split_transform_flag = ff_hevc_split_transform_flag_decode(s, log2_trafo_size);
+    } else {
+        int inter_split = s->ps.sps->max_transform_hierarchy_depth_inter == 0 &&
+                          lc->cu.pred_mode == MODE_INTER &&
+                          lc->cu.part_mode != PART_2Nx2N &&
+                          trafo_depth == 0;
+
+        split_transform_flag = log2_trafo_size > s->ps.sps->log2_max_trafo_size ||
+                               (lc->cu.intra_split_flag && trafo_depth == 0) ||
+                               inter_split;
+    }
+
+    if (log2_trafo_size > 2 && (trafo_depth == 0 || cbf_cb))
+        cbf_cb = ff_hevc_cbf_cb_cr_decode(s, trafo_depth);
+    else if (log2_trafo_size > 2 || trafo_depth == 0)
+        cbf_cb = 0;
+    if (log2_trafo_size > 2 && (trafo_depth == 0 || cbf_cr))
+        cbf_cr = ff_hevc_cbf_cb_cr_decode(s, trafo_depth);
+    else if (log2_trafo_size > 2 || trafo_depth == 0)
+        cbf_cr = 0;
+
+    if (split_transform_flag) {
+        const int trafo_size_split = 1 << (log2_trafo_size - 1);
+        const int x1 = x0 + trafo_size_split;
+        const int y1 = y0 + trafo_size_split;
+
+#define SUBDIVIDE(x, y, idx)                                                    \
+do {                                                                            \
+    ret = hls_transform_tree(s, x, y, x0, y0, cb_xBase, cb_yBase, log2_cb_size, \
+                             log2_trafo_size - 1, trafo_depth + 1, idx,         \
+                             cbf_cb, cbf_cr);                                   \
+    if (ret < 0)                                                                \
+        return ret;                                                             \
+} while (0)
+
+        SUBDIVIDE(x0, y0, 0);
+        SUBDIVIDE(x1, y0, 1);
+        SUBDIVIDE(x0, y1, 2);
+        SUBDIVIDE(x1, y1, 3);
+
+#undef SUBDIVIDE
+    } else {
+        int min_tu_size      = 1 << s->ps.sps->log2_min_tb_size;
+        int log2_min_tu_size = s->ps.sps->log2_min_tb_size;
+        int min_tu_width     = s->ps.sps->min_tb_width;
+        int cbf_luma         = 1;
+
+        if (lc->cu.pred_mode == MODE_INTRA || trafo_depth != 0 ||
+            cbf_cb || cbf_cr)
+            cbf_luma = ff_hevc_cbf_luma_decode(s, trafo_depth);
+
+        ret = hls_transform_unit(s, x0, y0, xBase, yBase, cb_xBase, cb_yBase,
+                                 log2_cb_size, log2_trafo_size,
+                                 blk_idx, cbf_luma, cbf_cb, cbf_cr);
+        if (ret < 0)
+            return ret;
+        // TODO: store cbf_luma somewhere else
+        if (cbf_luma) {
+            int i, j;
+            for (i = 0; i < (1 << log2_trafo_size); i += min_tu_size)
+                for (j = 0; j < (1 << log2_trafo_size); j += min_tu_size) {
+                    int x_tu = (x0 + j) >> log2_min_tu_size;
+                    int y_tu = (y0 + i) >> log2_min_tu_size;
+                    s->cbf_luma[y_tu * min_tu_width + x_tu] = 1;
+                }
+        }
+        if (!s->sh.disable_deblocking_filter_flag) {
+            ff_hevc_deblocking_boundary_strengths(s, x0, y0, log2_trafo_size);
+            if (s->ps.pps->transquant_bypass_enable_flag &&
+                lc->cu.cu_transquant_bypass_flag)
+                set_deblocking_bypass(s, x0, y0, log2_trafo_size);
+        }
+    }
+    return 0;
+}
+
+static int hls_pcm_sample(HEVCContext *s, int x0, int y0, int log2_cb_size)
+{
+    //TODO: non-4:2:0 support
+    HEVCLocalContext *lc = &s->HEVClc;
+    GetBitContext gb;
+    int cb_size   = 1 << log2_cb_size;
+    ptrdiff_t stride0 = s->frame->linesize[0];
+    ptrdiff_t stride1 = s->frame->linesize[1];
+    ptrdiff_t stride2 = s->frame->linesize[2];
+    uint8_t *dst0 = &s->frame->data[0][y0 * stride0 + (x0 << s->ps.sps->pixel_shift)];
+    uint8_t *dst1 = &s->frame->data[1][(y0 >> s->ps.sps->vshift[1]) * stride1 + ((x0 >> s->ps.sps->hshift[1]) << s->ps.sps->pixel_shift)];
+    uint8_t *dst2 = &s->frame->data[2][(y0 >> s->ps.sps->vshift[2]) * stride2 + ((x0 >> s->ps.sps->hshift[2]) << s->ps.sps->pixel_shift)];
+
+    int length         = cb_size * cb_size * s->ps.sps->pcm.bit_depth + ((cb_size * cb_size) >> 1) * s->ps.sps->pcm.bit_depth_chroma;
+    const uint8_t *pcm = skip_bytes(&lc->cc, (length + 7) >> 3);
+    int ret;
+
+    if (!s->sh.disable_deblocking_filter_flag)
+        ff_hevc_deblocking_boundary_strengths(s, x0, y0, log2_cb_size);
+
+    ret = init_get_bits(&gb, pcm, length);
+    if (ret < 0)
+        return ret;
+
+    s->hevcdsp.put_pcm(dst0, stride0, cb_size,     &gb, s->ps.sps->pcm.bit_depth);
+    s->hevcdsp.put_pcm(dst1, stride1, cb_size / 2, &gb, s->ps.sps->pcm.bit_depth_chroma);
+    s->hevcdsp.put_pcm(dst2, stride2, cb_size / 2, &gb, s->ps.sps->pcm.bit_depth_chroma);
+    return 0;
+}
+
+static void hls_mvd_coding(HEVCContext *s, int x0, int y0, int log2_cb_size)
+{
+    HEVCLocalContext *lc = &s->HEVClc;
+    int x = ff_hevc_abs_mvd_greater0_flag_decode(s);
+    int y = ff_hevc_abs_mvd_greater0_flag_decode(s);
+
+    if (x)
+        x += ff_hevc_abs_mvd_greater1_flag_decode(s);
+    if (y)
+        y += ff_hevc_abs_mvd_greater1_flag_decode(s);
+
+    switch (x) {
+    case 2: lc->pu.mvd.x = ff_hevc_mvd_decode(s);           break;
+    case 1: lc->pu.mvd.x = ff_hevc_mvd_sign_flag_decode(s); break;
+    case 0: lc->pu.mvd.x = 0;                               break;
+    }
+
+    switch (y) {
+    case 2: lc->pu.mvd.y = ff_hevc_mvd_decode(s);           break;
+    case 1: lc->pu.mvd.y = ff_hevc_mvd_sign_flag_decode(s); break;
+    case 0: lc->pu.mvd.y = 0;                               break;
+    }
+}
+
+/**
+ * 8.5.3.2.2.1 Luma sample interpolation process
+ *
+ * @param s HEVC decoding context
+ * @param dst target buffer for block data at block position
+ * @param dststride stride of the dst buffer
+ * @param ref reference picture buffer at origin (0, 0)
+ * @param mv motion vector (relative to block position) to get pixel data from
+ * @param x_off horizontal position of block from origin (0, 0)
+ * @param y_off vertical position of block from origin (0, 0)
+ * @param block_w width of block
+ * @param block_h height of block
+ */
+static void luma_mc(HEVCContext *s, int16_t *dst, ptrdiff_t dststride,
+                    AVFrame *ref, const Mv *mv, int x_off, int y_off,
+                    int block_w, int block_h, int pred_idx)
+{
+    HEVCLocalContext *lc = &s->HEVClc;
+    uint8_t *src         = ref->data[0];
+    ptrdiff_t srcstride  = ref->linesize[0];
+    int pic_width        = s->ps.sps->width;
+    int pic_height       = s->ps.sps->height;
+
+    int mx         = mv->x & 3;
+    int my         = mv->y & 3;
+    int extra_left = ff_hevc_qpel_extra_before[mx];
+    int extra_top  = ff_hevc_qpel_extra_before[my];
+
+    x_off += mv->x >> 2;
+    y_off += mv->y >> 2;
+    src   += y_off * srcstride + (x_off * (1 << s->ps.sps->pixel_shift));
+
+    if (x_off < extra_left || y_off < extra_top ||
+        x_off >= pic_width - block_w - ff_hevc_qpel_extra_after[mx] ||
+        y_off >= pic_height - block_h - ff_hevc_qpel_extra_after[my]) {
+        const ptrdiff_t edge_emu_stride = EDGE_EMU_BUFFER_STRIDE << s->ps.sps->pixel_shift;
+        int offset = extra_top * srcstride + (extra_left << s->ps.sps->pixel_shift);
+        int buf_offset = extra_top *
+                         edge_emu_stride + (extra_left << s->ps.sps->pixel_shift);
+
+        s->vdsp.emulated_edge_mc(lc->edge_emu_buffer, src - offset,
+                                 edge_emu_stride, srcstride,
+                                 block_w + ff_hevc_qpel_extra[mx],
+                                 block_h + ff_hevc_qpel_extra[my],
+                                 x_off - extra_left, y_off - extra_top,
+                                 pic_width, pic_height);
+        src = lc->edge_emu_buffer + buf_offset;
+        srcstride = edge_emu_stride;
+    }
+    s->hevcdsp.put_hevc_qpel[!!my][!!mx][pred_idx](dst, dststride, src, srcstride,
+                                                   block_h, mx, my, lc->mc_buffer);
+}
+
+/**
+ * 8.5.3.2.2.2 Chroma sample interpolation process
+ *
+ * @param s HEVC decoding context
+ * @param dst1 target buffer for block data at block position (U plane)
+ * @param dst2 target buffer for block data at block position (V plane)
+ * @param dststride stride of the dst1 and dst2 buffers
+ * @param ref reference picture buffer at origin (0, 0)
+ * @param mv motion vector (relative to block position) to get pixel data from
+ * @param x_off horizontal position of block from origin (0, 0)
+ * @param y_off vertical position of block from origin (0, 0)
+ * @param block_w width of block
+ * @param block_h height of block
+ */
+static void chroma_mc(HEVCContext *s, int16_t *dst1, int16_t *dst2,
+                      ptrdiff_t dststride, AVFrame *ref, const Mv *mv,
+                      int x_off, int y_off, int block_w, int block_h, int pred_idx)
+{
+    HEVCLocalContext *lc = &s->HEVClc;
+    uint8_t *src1        = ref->data[1];
+    uint8_t *src2        = ref->data[2];
+    ptrdiff_t src1stride = ref->linesize[1];
+    ptrdiff_t src2stride = ref->linesize[2];
+    int pic_width        = s->ps.sps->width >> 1;
+    int pic_height       = s->ps.sps->height >> 1;
+
+    int mx = mv->x & 7;
+    int my = mv->y & 7;
+
+    x_off += mv->x >> 3;
+    y_off += mv->y >> 3;
+    src1  += y_off * src1stride + (x_off * (1 << s->ps.sps->pixel_shift));
+    src2  += y_off * src2stride + (x_off * (1 << s->ps.sps->pixel_shift));
+
+    if (x_off < EPEL_EXTRA_BEFORE || y_off < EPEL_EXTRA_AFTER ||
+        x_off >= pic_width - block_w - EPEL_EXTRA_AFTER ||
+        y_off >= pic_height - block_h - EPEL_EXTRA_AFTER) {
+        const ptrdiff_t edge_emu_stride = EDGE_EMU_BUFFER_STRIDE << s->ps.sps->pixel_shift;
+        int offset1 = EPEL_EXTRA_BEFORE * (src1stride + (1 << s->ps.sps->pixel_shift));
+        int buf_offset1 = EPEL_EXTRA_BEFORE *
+                          (edge_emu_stride + (1 << s->ps.sps->pixel_shift));
+        int offset2 = EPEL_EXTRA_BEFORE * (src2stride + (1 << s->ps.sps->pixel_shift));
+        int buf_offset2 = EPEL_EXTRA_BEFORE *
+                          (edge_emu_stride + (1 << s->ps.sps->pixel_shift));
+
+        s->vdsp.emulated_edge_mc(lc->edge_emu_buffer, src1 - offset1,
+                                 edge_emu_stride, src1stride,
+                                 block_w + EPEL_EXTRA, block_h + EPEL_EXTRA,
+                                 x_off - EPEL_EXTRA_BEFORE,
+                                 y_off - EPEL_EXTRA_BEFORE,
+                                 pic_width, pic_height);
+
+        src1 = lc->edge_emu_buffer + buf_offset1;
+        src1stride = edge_emu_stride;
+        s->hevcdsp.put_hevc_epel[!!my][!!mx][pred_idx](dst1, dststride, src1, src1stride,
+                                                       block_h, mx, my, lc->mc_buffer);
+
+        s->vdsp.emulated_edge_mc(lc->edge_emu_buffer, src2 - offset2,
+                                 edge_emu_stride, src2stride,
+                                 block_w + EPEL_EXTRA, block_h + EPEL_EXTRA,
+                                 x_off - EPEL_EXTRA_BEFORE,
+                                 y_off - EPEL_EXTRA_BEFORE,
+                                 pic_width, pic_height);
+        src2 = lc->edge_emu_buffer + buf_offset2;
+        src2stride = edge_emu_stride;
+
+        s->hevcdsp.put_hevc_epel[!!my][!!mx][pred_idx](dst2, dststride, src2, src2stride,
+                                                       block_h, mx, my, lc->mc_buffer);
+    } else {
+        s->hevcdsp.put_hevc_epel[!!my][!!mx][pred_idx](dst1, dststride, src1, src1stride,
+                                                       block_h, mx, my, lc->mc_buffer);
+        s->hevcdsp.put_hevc_epel[!!my][!!mx][pred_idx](dst2, dststride, src2, src2stride,
+                                                       block_h, mx, my, lc->mc_buffer);
+    }
+}
+
+static void hevc_await_progress(HEVCContext *s, HEVCFrame *ref,
+                                const Mv *mv, int y0, int height)
+{
+    int y = (mv->y >> 2) + y0 + height + 9;
+    ff_thread_await_progress(&ref->tf, y, 0);
+}
+
+static void hevc_luma_mv_mpv_mode(HEVCContext *s, int x0, int y0, int nPbW,
+                                  int nPbH, int log2_cb_size, int part_idx,
+                                  int merge_idx, MvField *mv)
+{
+    HEVCLocalContext *lc             = &s->HEVClc;
+    enum InterPredIdc inter_pred_idc = PRED_L0;
+    int mvp_flag;
+
+    ff_hevc_set_neighbour_available(s, x0, y0, nPbW, nPbH);
+    if (s->sh.slice_type == B_SLICE)
+        inter_pred_idc = ff_hevc_inter_pred_idc_decode(s, nPbW, nPbH);
+
+    if (inter_pred_idc != PRED_L1) {
+        if (s->sh.nb_refs[L0])
+            mv->ref_idx[0]= ff_hevc_ref_idx_lx_decode(s, s->sh.nb_refs[L0]);
+
+        mv->pred_flag[0] = 1;
+        hls_mvd_coding(s, x0, y0, 0);
+        mvp_flag = ff_hevc_mvp_lx_flag_decode(s);
+        ff_hevc_luma_mv_mvp_mode(s, x0, y0, nPbW, nPbH, log2_cb_size,
+                                 part_idx, merge_idx, mv, mvp_flag, 0);
+        mv->mv[0].x += lc->pu.mvd.x;
+        mv->mv[0].y += lc->pu.mvd.y;
+    }
+
+    if (inter_pred_idc != PRED_L0) {
+        if (s->sh.nb_refs[L1])
+            mv->ref_idx[1]= ff_hevc_ref_idx_lx_decode(s, s->sh.nb_refs[L1]);
+
+        if (s->sh.mvd_l1_zero_flag == 1 && inter_pred_idc == PRED_BI) {
+            AV_ZERO32(&lc->pu.mvd);
+        } else {
+            hls_mvd_coding(s, x0, y0, 1);
+        }
+
+        mv->pred_flag[1] = 1;
+        mvp_flag = ff_hevc_mvp_lx_flag_decode(s);
+        ff_hevc_luma_mv_mvp_mode(s, x0, y0, nPbW, nPbH, log2_cb_size,
+                                 part_idx, merge_idx, mv, mvp_flag, 1);
+        mv->mv[1].x += lc->pu.mvd.x;
+        mv->mv[1].y += lc->pu.mvd.y;
+    }
+}
+
+static void hls_prediction_unit(HEVCContext *s, int x0, int y0,
+                                int nPbW, int nPbH,
+                                int log2_cb_size, int partIdx)
+{
+    static const int pred_indices[] = {
+        [4] = 0, [8] = 1, [12] = 2, [16] = 3, [24] = 4, [32] = 5, [48] = 6, [64] = 7,
+    };
+    const int pred_idx = pred_indices[nPbW];
+
+#define POS(c_idx, x, y)                                                              \
+    &s->frame->data[c_idx][((y) >> s->ps.sps->vshift[c_idx]) * s->frame->linesize[c_idx] + \
+                           (((x) >> s->ps.sps->hshift[c_idx]) << s->ps.sps->pixel_shift)]
+    HEVCLocalContext *lc = &s->HEVClc;
+    int merge_idx = 0;
+    struct MvField current_mv = {{{ 0 }}};
+
+    int min_pu_width = s->ps.sps->min_pu_width;
+
+    MvField *tab_mvf = s->ref->tab_mvf;
+    RefPicList  *refPicList = s->ref->refPicList;
+    HEVCFrame *ref0, *ref1;
+
+    ptrdiff_t tmpstride = MAX_PB_SIZE * sizeof(int16_t);
+
+    uint8_t *dst0 = POS(0, x0, y0);
+    uint8_t *dst1 = POS(1, x0, y0);
+    uint8_t *dst2 = POS(2, x0, y0);
+    int log2_min_cb_size = s->ps.sps->log2_min_cb_size;
+    int min_cb_width     = s->ps.sps->min_cb_width;
+    int x_cb             = x0 >> log2_min_cb_size;
+    int y_cb             = y0 >> log2_min_cb_size;
+    int x_pu, y_pu;
+    int i, j;
+
+    int skip_flag = SAMPLE_CTB(s->skip_flag, x_cb, y_cb);
+
+    if (!skip_flag)
+        lc->pu.merge_flag = ff_hevc_merge_flag_decode(s);
+
+    if (skip_flag || lc->pu.merge_flag) {
+        if (s->sh.max_num_merge_cand > 1)
+            merge_idx = ff_hevc_merge_idx_decode(s);
+        else
+            merge_idx = 0;
+
+        ff_hevc_luma_mv_merge_mode(s, x0, y0, nPbW, nPbH, log2_cb_size,
+                                   partIdx, merge_idx, &current_mv);
+    } else {
+        hevc_luma_mv_mpv_mode(s, x0, y0, nPbW, nPbH, log2_cb_size,
+                              partIdx, merge_idx, &current_mv);
+    }
+
+    x_pu = x0 >> s->ps.sps->log2_min_pu_size;
+    y_pu = y0 >> s->ps.sps->log2_min_pu_size;
+
+    for (j = 0; j < nPbH >> s->ps.sps->log2_min_pu_size; j++)
+        for (i = 0; i < nPbW >> s->ps.sps->log2_min_pu_size; i++)
+            tab_mvf[(y_pu + j) * min_pu_width + x_pu + i] = current_mv;
+
+    if (current_mv.pred_flag[0]) {
+        ref0 = refPicList[0].ref[current_mv.ref_idx[0]];
+        if (!ref0)
+            return;
+        hevc_await_progress(s, ref0, &current_mv.mv[0], y0, nPbH);
+    }
+    if (current_mv.pred_flag[1]) {
+        ref1 = refPicList[1].ref[current_mv.ref_idx[1]];
+        if (!ref1)
+            return;
+        hevc_await_progress(s, ref1, &current_mv.mv[1], y0, nPbH);
+    }
+
+    if (current_mv.pred_flag[0] && !current_mv.pred_flag[1]) {
+        DECLARE_ALIGNED(16, int16_t,  tmp[MAX_PB_SIZE * MAX_PB_SIZE]);
+        DECLARE_ALIGNED(16, int16_t, tmp2[MAX_PB_SIZE * MAX_PB_SIZE]);
+
+        luma_mc(s, tmp, tmpstride, ref0->frame,
+                &current_mv.mv[0], x0, y0, nPbW, nPbH, pred_idx);
+
+        if ((s->sh.slice_type == P_SLICE && s->ps.pps->weighted_pred_flag) ||
+            (s->sh.slice_type == B_SLICE && s->ps.pps->weighted_bipred_flag)) {
+            s->hevcdsp.weighted_pred[pred_idx](s->sh.luma_log2_weight_denom,
+                                               s->sh.luma_weight_l0[current_mv.ref_idx[0]],
+                                               s->sh.luma_offset_l0[current_mv.ref_idx[0]],
+                                               dst0, s->frame->linesize[0], tmp,
+                                               tmpstride, nPbH);
+        } else {
+            s->hevcdsp.put_unweighted_pred[pred_idx](dst0, s->frame->linesize[0], tmp, tmpstride, nPbH);
+        }
+        chroma_mc(s, tmp, tmp2, tmpstride, ref0->frame,
+                  &current_mv.mv[0], x0 / 2, y0 / 2, nPbW / 2, nPbH / 2, pred_idx);
+
+        if ((s->sh.slice_type == P_SLICE && s->ps.pps->weighted_pred_flag) ||
+            (s->sh.slice_type == B_SLICE && s->ps.pps->weighted_bipred_flag)) {
+            s->hevcdsp.weighted_pred_chroma[pred_idx](s->sh.chroma_log2_weight_denom,
+                                                      s->sh.chroma_weight_l0[current_mv.ref_idx[0]][0],
+                                                      s->sh.chroma_offset_l0[current_mv.ref_idx[0]][0],
+                                                      dst1, s->frame->linesize[1], tmp, tmpstride,
+                                                      nPbH / 2);
+            s->hevcdsp.weighted_pred_chroma[pred_idx](s->sh.chroma_log2_weight_denom,
+                                                      s->sh.chroma_weight_l0[current_mv.ref_idx[0]][1],
+                                                      s->sh.chroma_offset_l0[current_mv.ref_idx[0]][1],
+                                                      dst2, s->frame->linesize[2], tmp2, tmpstride,
+                                                      nPbH / 2);
+        } else {
+            s->hevcdsp.put_unweighted_pred_chroma[pred_idx](dst1, s->frame->linesize[1], tmp,  tmpstride, nPbH / 2);
+            s->hevcdsp.put_unweighted_pred_chroma[pred_idx](dst2, s->frame->linesize[2], tmp2, tmpstride, nPbH / 2);
+        }
+    } else if (!current_mv.pred_flag[0] && current_mv.pred_flag[1]) {
+        DECLARE_ALIGNED(16, int16_t, tmp [MAX_PB_SIZE * MAX_PB_SIZE]);
+        DECLARE_ALIGNED(16, int16_t, tmp2[MAX_PB_SIZE * MAX_PB_SIZE]);
+
+        luma_mc(s, tmp, tmpstride, ref1->frame,
+                &current_mv.mv[1], x0, y0, nPbW, nPbH, pred_idx);
+
+        if ((s->sh.slice_type == P_SLICE && s->ps.pps->weighted_pred_flag) ||
+            (s->sh.slice_type == B_SLICE && s->ps.pps->weighted_bipred_flag)) {
+            s->hevcdsp.weighted_pred[pred_idx](s->sh.luma_log2_weight_denom,
+                                               s->sh.luma_weight_l1[current_mv.ref_idx[1]],
+                                               s->sh.luma_offset_l1[current_mv.ref_idx[1]],
+                                               dst0, s->frame->linesize[0], tmp, tmpstride,
+                                               nPbH);
+        } else {
+            s->hevcdsp.put_unweighted_pred[pred_idx](dst0, s->frame->linesize[0], tmp, tmpstride, nPbH);
+        }
+
+        chroma_mc(s, tmp, tmp2, tmpstride, ref1->frame,
+                  &current_mv.mv[1], x0 / 2, y0 / 2, nPbW / 2, nPbH / 2, pred_idx);
+
+        if ((s->sh.slice_type == P_SLICE && s->ps.pps->weighted_pred_flag) ||
+            (s->sh.slice_type == B_SLICE && s->ps.pps->weighted_bipred_flag)) {
+            s->hevcdsp.weighted_pred_chroma[pred_idx](s->sh.chroma_log2_weight_denom,
+                                                      s->sh.chroma_weight_l1[current_mv.ref_idx[1]][0],
+                                                      s->sh.chroma_offset_l1[current_mv.ref_idx[1]][0],
+                                                      dst1, s->frame->linesize[1], tmp, tmpstride, nPbH/2);
+            s->hevcdsp.weighted_pred_chroma[pred_idx](s->sh.chroma_log2_weight_denom,
+                                                      s->sh.chroma_weight_l1[current_mv.ref_idx[1]][1],
+                                                      s->sh.chroma_offset_l1[current_mv.ref_idx[1]][1],
+                                                      dst2, s->frame->linesize[2], tmp2, tmpstride, nPbH/2);
+        } else {
+            s->hevcdsp.put_unweighted_pred_chroma[pred_idx](dst1, s->frame->linesize[1], tmp,  tmpstride, nPbH / 2);
+            s->hevcdsp.put_unweighted_pred_chroma[pred_idx](dst2, s->frame->linesize[2], tmp2, tmpstride, nPbH / 2);
+        }
+    } else if (current_mv.pred_flag[0] && current_mv.pred_flag[1]) {
+        DECLARE_ALIGNED(16, int16_t, tmp [MAX_PB_SIZE * MAX_PB_SIZE]);
+        DECLARE_ALIGNED(16, int16_t, tmp2[MAX_PB_SIZE * MAX_PB_SIZE]);
+        DECLARE_ALIGNED(16, int16_t, tmp3[MAX_PB_SIZE * MAX_PB_SIZE]);
+        DECLARE_ALIGNED(16, int16_t, tmp4[MAX_PB_SIZE * MAX_PB_SIZE]);
+
+        luma_mc(s, tmp, tmpstride, ref0->frame,
+                &current_mv.mv[0], x0, y0, nPbW, nPbH, pred_idx);
+        luma_mc(s, tmp2, tmpstride, ref1->frame,
+                &current_mv.mv[1], x0, y0, nPbW, nPbH, pred_idx);
+
+        if ((s->sh.slice_type == P_SLICE && s->ps.pps->weighted_pred_flag) ||
+            (s->sh.slice_type == B_SLICE && s->ps.pps->weighted_bipred_flag)) {
+            s->hevcdsp.weighted_pred_avg[pred_idx](s->sh.luma_log2_weight_denom,
+                                                   s->sh.luma_weight_l0[current_mv.ref_idx[0]],
+                                                   s->sh.luma_weight_l1[current_mv.ref_idx[1]],
+                                                   s->sh.luma_offset_l0[current_mv.ref_idx[0]],
+                                                   s->sh.luma_offset_l1[current_mv.ref_idx[1]],
+                                                   dst0, s->frame->linesize[0],
+                                                   tmp, tmp2, tmpstride, nPbH);
+        } else {
+            s->hevcdsp.put_unweighted_pred_avg[pred_idx](dst0, s->frame->linesize[0],
+                                                         tmp, tmp2, tmpstride, nPbH);
+        }
+
+        chroma_mc(s, tmp, tmp2, tmpstride, ref0->frame,
+                  &current_mv.mv[0], x0 / 2, y0 / 2, nPbW / 2, nPbH / 2, pred_idx);
+        chroma_mc(s, tmp3, tmp4, tmpstride, ref1->frame,
+                  &current_mv.mv[1], x0 / 2, y0 / 2, nPbW / 2, nPbH / 2, pred_idx);
+
+        if ((s->sh.slice_type == P_SLICE && s->ps.pps->weighted_pred_flag) ||
+            (s->sh.slice_type == B_SLICE && s->ps.pps->weighted_bipred_flag)) {
+            s->hevcdsp.weighted_pred_avg_chroma[pred_idx](s->sh.chroma_log2_weight_denom,
+                                                          s->sh.chroma_weight_l0[current_mv.ref_idx[0]][0],
+                                                          s->sh.chroma_weight_l1[current_mv.ref_idx[1]][0],
+                                                          s->sh.chroma_offset_l0[current_mv.ref_idx[0]][0],
+                                                          s->sh.chroma_offset_l1[current_mv.ref_idx[1]][0],
+                                                          dst1, s->frame->linesize[1], tmp, tmp3,
+                                                          tmpstride, nPbH / 2);
+            s->hevcdsp.weighted_pred_avg_chroma[pred_idx](s->sh.chroma_log2_weight_denom,
+                                                          s->sh.chroma_weight_l0[current_mv.ref_idx[0]][1],
+                                                          s->sh.chroma_weight_l1[current_mv.ref_idx[1]][1],
+                                                          s->sh.chroma_offset_l0[current_mv.ref_idx[0]][1],
+                                                          s->sh.chroma_offset_l1[current_mv.ref_idx[1]][1],
+                                                          dst2, s->frame->linesize[2], tmp2, tmp4,
+                                                          tmpstride, nPbH / 2);
+        } else {
+            s->hevcdsp.put_unweighted_pred_avg_chroma[pred_idx](dst1, s->frame->linesize[1], tmp, tmp3,  tmpstride, nPbH/2);
+            s->hevcdsp.put_unweighted_pred_avg_chroma[pred_idx](dst2, s->frame->linesize[2], tmp2, tmp4, tmpstride, nPbH/2);
+        }
+    }
+}
+
+/**
+ * 8.4.1
+ */
+static int luma_intra_pred_mode(HEVCContext *s, int x0, int y0, int pu_size,
+                                int prev_intra_luma_pred_flag)
+{
+    HEVCLocalContext *lc = &s->HEVClc;
+    int x_pu             = x0 >> s->ps.sps->log2_min_pu_size;
+    int y_pu             = y0 >> s->ps.sps->log2_min_pu_size;
+    int min_pu_width     = s->ps.sps->min_pu_width;
+    int size_in_pus      = pu_size >> s->ps.sps->log2_min_pu_size;
+    int x0b              = x0 & ((1 << s->ps.sps->log2_ctb_size) - 1);
+    int y0b              = y0 & ((1 << s->ps.sps->log2_ctb_size) - 1);
+
+    int cand_up   = (lc->ctb_up_flag || y0b) ?
+                    s->tab_ipm[(y_pu - 1) * min_pu_width + x_pu] : INTRA_DC;
+    int cand_left = (lc->ctb_left_flag || x0b) ?
+                    s->tab_ipm[y_pu * min_pu_width + x_pu - 1]   : INTRA_DC;
+
+    int y_ctb = (y0 >> (s->ps.sps->log2_ctb_size)) << (s->ps.sps->log2_ctb_size);
+
+    MvField *tab_mvf = s->ref->tab_mvf;
+    int intra_pred_mode;
+    int candidate[3];
+    int i, j;
+
+    // intra_pred_mode prediction does not cross vertical CTB boundaries
+    if ((y0 - 1) < y_ctb)
+        cand_up = INTRA_DC;
+
+    if (cand_left == cand_up) {
+        if (cand_left < 2) {
+            candidate[0] = INTRA_PLANAR;
+            candidate[1] = INTRA_DC;
+            candidate[2] = INTRA_ANGULAR_26;
+        } else {
+            candidate[0] = cand_left;
+            candidate[1] = 2 + ((cand_left - 2 - 1 + 32) & 31);
+            candidate[2] = 2 + ((cand_left - 2 + 1) & 31);
+        }
+    } else {
+        candidate[0] = cand_left;
+        candidate[1] = cand_up;
+        if (candidate[0] != INTRA_PLANAR && candidate[1] != INTRA_PLANAR) {
+            candidate[2] = INTRA_PLANAR;
+        } else if (candidate[0] != INTRA_DC && candidate[1] != INTRA_DC) {
+            candidate[2] = INTRA_DC;
+        } else {
+            candidate[2] = INTRA_ANGULAR_26;
+        }
+    }
+
+    if (prev_intra_luma_pred_flag) {
+        intra_pred_mode = candidate[lc->pu.mpm_idx];
+    } else {
+        if (candidate[0] > candidate[1])
+            FFSWAP(uint8_t, candidate[0], candidate[1]);
+        if (candidate[0] > candidate[2])
+            FFSWAP(uint8_t, candidate[0], candidate[2]);
+        if (candidate[1] > candidate[2])
+            FFSWAP(uint8_t, candidate[1], candidate[2]);
+
+        intra_pred_mode = lc->pu.rem_intra_luma_pred_mode;
+        for (i = 0; i < 3; i++)
+            if (intra_pred_mode >= candidate[i])
+                intra_pred_mode++;
+    }
+
+    /* write the intra prediction units into the mv array */
+    if (!size_in_pus)
+        size_in_pus = 1;
+    for (i = 0; i < size_in_pus; i++) {
+        memset(&s->tab_ipm[(y_pu + i) * min_pu_width + x_pu],
+               intra_pred_mode, size_in_pus);
+
+        for (j = 0; j < size_in_pus; j++) {
+            tab_mvf[(y_pu + j) * min_pu_width + x_pu + i].is_intra     = 1;
+            tab_mvf[(y_pu + j) * min_pu_width + x_pu + i].pred_flag[0] = 0;
+            tab_mvf[(y_pu + j) * min_pu_width + x_pu + i].pred_flag[1] = 0;
+            tab_mvf[(y_pu + j) * min_pu_width + x_pu + i].ref_idx[0]   = 0;
+            tab_mvf[(y_pu + j) * min_pu_width + x_pu + i].ref_idx[1]   = 0;
+            tab_mvf[(y_pu + j) * min_pu_width + x_pu + i].mv[0].x      = 0;
+            tab_mvf[(y_pu + j) * min_pu_width + x_pu + i].mv[0].y      = 0;
+            tab_mvf[(y_pu + j) * min_pu_width + x_pu + i].mv[1].x      = 0;
+            tab_mvf[(y_pu + j) * min_pu_width + x_pu + i].mv[1].y      = 0;
+        }
+    }
+
+    return intra_pred_mode;
+}
+
+static av_always_inline void set_ct_depth(HEVCContext *s, int x0, int y0,
+                                          int log2_cb_size, int ct_depth)
+{
+    int length = (1 << log2_cb_size) >> s->ps.sps->log2_min_cb_size;
+    int x_cb   = x0 >> s->ps.sps->log2_min_cb_size;
+    int y_cb   = y0 >> s->ps.sps->log2_min_cb_size;
+    int y;
+
+    for (y = 0; y < length; y++)
+        memset(&s->tab_ct_depth[(y_cb + y) * s->ps.sps->min_cb_width + x_cb],
+               ct_depth, length);
+}
+
+static void intra_prediction_unit(HEVCContext *s, int x0, int y0,
+                                  int log2_cb_size)
+{
+    HEVCLocalContext *lc = &s->HEVClc;
+    static const uint8_t intra_chroma_table[4] = { 0, 26, 10, 1 };
+    uint8_t prev_intra_luma_pred_flag[4];
+    int split   = lc->cu.part_mode == PART_NxN;
+    int pb_size = (1 << log2_cb_size) >> split;
+    int side    = split + 1;
+    int chroma_mode;
+    int i, j;
+
+    for (i = 0; i < side; i++)
+        for (j = 0; j < side; j++)
+            prev_intra_luma_pred_flag[2 * i + j] = ff_hevc_prev_intra_luma_pred_flag_decode(s);
+
+    for (i = 0; i < side; i++) {
+        for (j = 0; j < side; j++) {
+            if (prev_intra_luma_pred_flag[2 * i + j])
+                lc->pu.mpm_idx = ff_hevc_mpm_idx_decode(s);
+            else
+                lc->pu.rem_intra_luma_pred_mode = ff_hevc_rem_intra_luma_pred_mode_decode(s);
+
+            lc->pu.intra_pred_mode[2 * i + j] =
+                luma_intra_pred_mode(s, x0 + pb_size * j, y0 + pb_size * i, pb_size,
+                                     prev_intra_luma_pred_flag[2 * i + j]);
+        }
+    }
+
+    chroma_mode = ff_hevc_intra_chroma_pred_mode_decode(s);
+    if (chroma_mode != 4) {
+        if (lc->pu.intra_pred_mode[0] == intra_chroma_table[chroma_mode])
+            lc->pu.intra_pred_mode_c = 34;
+        else
+            lc->pu.intra_pred_mode_c = intra_chroma_table[chroma_mode];
+    } else {
+        lc->pu.intra_pred_mode_c = lc->pu.intra_pred_mode[0];
+    }
+}
+
+static void intra_prediction_unit_default_value(HEVCContext *s,
+                                                int x0, int y0,
+                                                int log2_cb_size)
+{
+    HEVCLocalContext *lc = &s->HEVClc;
+    int pb_size          = 1 << log2_cb_size;
+    int size_in_pus      = pb_size >> s->ps.sps->log2_min_pu_size;
+    int min_pu_width     = s->ps.sps->min_pu_width;
+    MvField *tab_mvf     = s->ref->tab_mvf;
+    int x_pu             = x0 >> s->ps.sps->log2_min_pu_size;
+    int y_pu             = y0 >> s->ps.sps->log2_min_pu_size;
+    int j, k;
+
+    if (size_in_pus == 0)
+        size_in_pus = 1;
+    for (j = 0; j < size_in_pus; j++) {
+        memset(&s->tab_ipm[(y_pu + j) * min_pu_width + x_pu], INTRA_DC, size_in_pus);
+        for (k = 0; k < size_in_pus; k++)
+            tab_mvf[(y_pu + j) * min_pu_width + x_pu + k].is_intra = lc->cu.pred_mode == MODE_INTRA;
+    }
+}
+
+static int hls_coding_unit(HEVCContext *s, int x0, int y0, int log2_cb_size)
+{
+    int cb_size          = 1 << log2_cb_size;
+    HEVCLocalContext *lc = &s->HEVClc;
+    int log2_min_cb_size = s->ps.sps->log2_min_cb_size;
+    int length           = cb_size >> log2_min_cb_size;
+    int min_cb_width     = s->ps.sps->min_cb_width;
+    int x_cb             = x0 >> log2_min_cb_size;
+    int y_cb             = y0 >> log2_min_cb_size;
+    int x, y, ret;
+
+    lc->cu.x                = x0;
+    lc->cu.y                = y0;
+    lc->cu.pred_mode        = MODE_INTRA;
+    lc->cu.part_mode        = PART_2Nx2N;
+    lc->cu.intra_split_flag = 0;
+
+    SAMPLE_CTB(s->skip_flag, x_cb, y_cb) = 0;
+    for (x = 0; x < 4; x++)
+        lc->pu.intra_pred_mode[x] = 1;
+    if (s->ps.pps->transquant_bypass_enable_flag) {
+        lc->cu.cu_transquant_bypass_flag = ff_hevc_cu_transquant_bypass_flag_decode(s);
+        if (lc->cu.cu_transquant_bypass_flag)
+            set_deblocking_bypass(s, x0, y0, log2_cb_size);
+    } else
+        lc->cu.cu_transquant_bypass_flag = 0;
+
+    if (s->sh.slice_type != I_SLICE) {
+        uint8_t skip_flag = ff_hevc_skip_flag_decode(s, x0, y0, x_cb, y_cb);
+
+        x = y_cb * min_cb_width + x_cb;
+        for (y = 0; y < length; y++) {
+            memset(&s->skip_flag[x], skip_flag, length);
+            x += min_cb_width;
+        }
+        lc->cu.pred_mode = skip_flag ? MODE_SKIP : MODE_INTER;
+    }
+
+    if (SAMPLE_CTB(s->skip_flag, x_cb, y_cb)) {
+        hls_prediction_unit(s, x0, y0, cb_size, cb_size, log2_cb_size, 0);
+        intra_prediction_unit_default_value(s, x0, y0, log2_cb_size);
+
+        if (!s->sh.disable_deblocking_filter_flag)
+            ff_hevc_deblocking_boundary_strengths(s, x0, y0, log2_cb_size);
+    } else {
+        int pcm_flag = 0;
+
+        if (s->sh.slice_type != I_SLICE)
+            lc->cu.pred_mode = ff_hevc_pred_mode_decode(s);
+        if (lc->cu.pred_mode != MODE_INTRA ||
+            log2_cb_size == s->ps.sps->log2_min_cb_size) {
+            lc->cu.part_mode        = ff_hevc_part_mode_decode(s, log2_cb_size);
+            lc->cu.intra_split_flag = lc->cu.part_mode == PART_NxN &&
+                                      lc->cu.pred_mode == MODE_INTRA;
+        }
+
+        if (lc->cu.pred_mode == MODE_INTRA) {
+            if (lc->cu.part_mode == PART_2Nx2N && s->ps.sps->pcm_enabled_flag &&
+                log2_cb_size >= s->ps.sps->pcm.log2_min_pcm_cb_size &&
+                log2_cb_size <= s->ps.sps->pcm.log2_max_pcm_cb_size) {
+                pcm_flag = ff_hevc_pcm_flag_decode(s);
+            }
+            if (pcm_flag) {
+                intra_prediction_unit_default_value(s, x0, y0, log2_cb_size);
+                ret = hls_pcm_sample(s, x0, y0, log2_cb_size);
+                if (s->ps.sps->pcm.loop_filter_disable_flag)
+                    set_deblocking_bypass(s, x0, y0, log2_cb_size);
+
+                if (ret < 0)
+                    return ret;
+            } else {
+                intra_prediction_unit(s, x0, y0, log2_cb_size);
+            }
+        } else {
+            intra_prediction_unit_default_value(s, x0, y0, log2_cb_size);
+            switch (lc->cu.part_mode) {
+            case PART_2Nx2N:
+                hls_prediction_unit(s, x0, y0, cb_size, cb_size, log2_cb_size, 0);
+                break;
+            case PART_2NxN:
+                hls_prediction_unit(s, x0, y0,               cb_size, cb_size / 2, log2_cb_size, 0);
+                hls_prediction_unit(s, x0, y0 + cb_size / 2, cb_size, cb_size / 2, log2_cb_size, 1);
+                break;
+            case PART_Nx2N:
+                hls_prediction_unit(s, x0,               y0, cb_size / 2, cb_size, log2_cb_size, 0);
+                hls_prediction_unit(s, x0 + cb_size / 2, y0, cb_size / 2, cb_size, log2_cb_size, 1);
+                break;
+            case PART_2NxnU:
+                hls_prediction_unit(s, x0, y0,               cb_size, cb_size     / 4, log2_cb_size, 0);
+                hls_prediction_unit(s, x0, y0 + cb_size / 4, cb_size, cb_size * 3 / 4, log2_cb_size, 1);
+                break;
+            case PART_2NxnD:
+                hls_prediction_unit(s, x0, y0,                   cb_size, cb_size * 3 / 4, log2_cb_size, 0);
+                hls_prediction_unit(s, x0, y0 + cb_size * 3 / 4, cb_size, cb_size     / 4, log2_cb_size, 1);
+                break;
+            case PART_nLx2N:
+                hls_prediction_unit(s, x0,               y0, cb_size     / 4, cb_size, log2_cb_size, 0);
+                hls_prediction_unit(s, x0 + cb_size / 4, y0, cb_size * 3 / 4, cb_size, log2_cb_size, 1);
+                break;
+            case PART_nRx2N:
+                hls_prediction_unit(s, x0,                   y0, cb_size * 3 / 4, cb_size, log2_cb_size, 0);
+                hls_prediction_unit(s, x0 + cb_size * 3 / 4, y0, cb_size     / 4, cb_size, log2_cb_size, 1);
+                break;
+            case PART_NxN:
+                hls_prediction_unit(s, x0,               y0,               cb_size / 2, cb_size / 2, log2_cb_size, 0);
+                hls_prediction_unit(s, x0 + cb_size / 2, y0,               cb_size / 2, cb_size / 2, log2_cb_size, 1);
+                hls_prediction_unit(s, x0,               y0 + cb_size / 2, cb_size / 2, cb_size / 2, log2_cb_size, 2);
+                hls_prediction_unit(s, x0 + cb_size / 2, y0 + cb_size / 2, cb_size / 2, cb_size / 2, log2_cb_size, 3);
+                break;
+            }
+        }
+
+        if (!pcm_flag) {
+            int rqt_root_cbf = 1;
+
+            if (lc->cu.pred_mode != MODE_INTRA &&
+                !(lc->cu.part_mode == PART_2Nx2N && lc->pu.merge_flag)) {
+                rqt_root_cbf = ff_hevc_no_residual_syntax_flag_decode(s);
+            }
+            if (rqt_root_cbf) {
+                lc->cu.max_trafo_depth = lc->cu.pred_mode == MODE_INTRA ?
+                                         s->ps.sps->max_transform_hierarchy_depth_intra + lc->cu.intra_split_flag :
+                                         s->ps.sps->max_transform_hierarchy_depth_inter;
+                ret = hls_transform_tree(s, x0, y0, x0, y0, x0, y0,
+                                         log2_cb_size,
+                                         log2_cb_size, 0, 0, 0, 0);
+                if (ret < 0)
+                    return ret;
+            } else {
+                if (!s->sh.disable_deblocking_filter_flag)
+                    ff_hevc_deblocking_boundary_strengths(s, x0, y0, log2_cb_size);
+            }
+        }
+    }
+
+    if (s->ps.pps->cu_qp_delta_enabled_flag && lc->tu.is_cu_qp_delta_coded == 0)
+        ff_hevc_set_qPy(s, x0, y0, x0, y0, log2_cb_size);
+
+    x = y_cb * min_cb_width + x_cb;
+    for (y = 0; y < length; y++) {
+        memset(&s->qp_y_tab[x], lc->qp_y, length);
+        x += min_cb_width;
+    }
+
+    set_ct_depth(s, x0, y0, log2_cb_size, lc->ct.depth);
+
+    return 0;
+}
+
+static int hls_coding_quadtree(HEVCContext *s, int x0, int y0,
+                               int log2_cb_size, int cb_depth)
+{
+    HEVCLocalContext *lc = &s->HEVClc;
+    const int cb_size    = 1 << log2_cb_size;
+    int split_cu;
+
+    lc->ct.depth = cb_depth;
+    if (x0 + cb_size <= s->ps.sps->width  &&
+        y0 + cb_size <= s->ps.sps->height &&
+        log2_cb_size > s->ps.sps->log2_min_cb_size) {
+        split_cu = ff_hevc_split_coding_unit_flag_decode(s, cb_depth, x0, y0);
+    } else {
+        split_cu = (log2_cb_size > s->ps.sps->log2_min_cb_size);
+    }
+    if (s->ps.pps->cu_qp_delta_enabled_flag &&
+        log2_cb_size >= s->ps.sps->log2_ctb_size - s->ps.pps->diff_cu_qp_delta_depth) {
+        lc->tu.is_cu_qp_delta_coded = 0;
+        lc->tu.cu_qp_delta          = 0;
+    }
+
+    if (split_cu) {
+        const int cb_size_split = cb_size >> 1;
+        const int x1 = x0 + cb_size_split;
+        const int y1 = y0 + cb_size_split;
+
+        log2_cb_size--;
+        cb_depth++;
+
+#define SUBDIVIDE(x, y)                                                \
+do {                                                                   \
+    if (x < s->ps.sps->width && y < s->ps.sps->height) {                     \
+        int ret = hls_coding_quadtree(s, x, y, log2_cb_size, cb_depth);\
+        if (ret < 0)                                                   \
+            return ret;                                                \
+    }                                                                  \
+} while (0)
+
+        SUBDIVIDE(x0, y0);
+        SUBDIVIDE(x1, y0);
+        SUBDIVIDE(x0, y1);
+        SUBDIVIDE(x1, y1);
+    } else {
+        int ret = hls_coding_unit(s, x0, y0, log2_cb_size);
+        if (ret < 0)
+            return ret;
+    }
+
+    return 0;
+}
+
+static void hls_decode_neighbour(HEVCContext *s, int x_ctb, int y_ctb,
+                                 int ctb_addr_ts)
+{
+    HEVCLocalContext *lc  = &s->HEVClc;
+    int ctb_size          = 1 << s->ps.sps->log2_ctb_size;
+    int ctb_addr_rs       = s->ps.pps->ctb_addr_ts_to_rs[ctb_addr_ts];
+    int ctb_addr_in_slice = ctb_addr_rs - s->sh.slice_addr;
+
+    s->tab_slice_address[ctb_addr_rs] = s->sh.slice_addr;
+
+    if (s->ps.pps->entropy_coding_sync_enabled_flag) {
+        if (x_ctb == 0 && (y_ctb & (ctb_size - 1)) == 0)
+            lc->first_qp_group = 1;
+        lc->end_of_tiles_x = s->ps.sps->width;
+    } else if (s->ps.pps->tiles_enabled_flag) {
+        if (ctb_addr_ts && s->ps.pps->tile_id[ctb_addr_ts] != s->ps.pps->tile_id[ctb_addr_ts - 1]) {
+            int idxX = s->ps.pps->col_idxX[x_ctb >> s->ps.sps->log2_ctb_size];
+            lc->start_of_tiles_x = x_ctb;
+            lc->end_of_tiles_x   = x_ctb + (s->ps.pps->column_width[idxX] << s->ps.sps->log2_ctb_size);
+            lc->first_qp_group   = 1;
+        }
+    } else {
+        lc->end_of_tiles_x = s->ps.sps->width;
+    }
+
+    lc->end_of_tiles_y = FFMIN(y_ctb + ctb_size, s->ps.sps->height);
+
+    lc->boundary_flags = 0;
+    if (s->ps.pps->tiles_enabled_flag) {
+        if (x_ctb > 0 && s->ps.pps->tile_id[ctb_addr_ts] != s->ps.pps->tile_id[s->ps.pps->ctb_addr_rs_to_ts[ctb_addr_rs - 1]])
+            lc->boundary_flags |= BOUNDARY_LEFT_TILE;
+        if (x_ctb > 0 && s->tab_slice_address[ctb_addr_rs] != s->tab_slice_address[ctb_addr_rs - 1])
+            lc->boundary_flags |= BOUNDARY_LEFT_SLICE;
+        if (y_ctb > 0 && s->ps.pps->tile_id[ctb_addr_ts] != s->ps.pps->tile_id[s->ps.pps->ctb_addr_rs_to_ts[ctb_addr_rs - s->ps.sps->ctb_width]])
+            lc->boundary_flags |= BOUNDARY_UPPER_TILE;
+        if (y_ctb > 0 && s->tab_slice_address[ctb_addr_rs] != s->tab_slice_address[ctb_addr_rs - s->ps.sps->ctb_width])
+            lc->boundary_flags |= BOUNDARY_UPPER_SLICE;
+    } else {
+        if (!ctb_addr_in_slice)
+            lc->boundary_flags |= BOUNDARY_LEFT_SLICE;
+        if (ctb_addr_in_slice < s->ps.sps->ctb_width)
+            lc->boundary_flags |= BOUNDARY_UPPER_SLICE;
+    }
+
+    lc->ctb_left_flag = ((x_ctb > 0) && (ctb_addr_in_slice > 0) && !(lc->boundary_flags & BOUNDARY_LEFT_TILE));
+    lc->ctb_up_flag   = ((y_ctb > 0) && (ctb_addr_in_slice >= s->ps.sps->ctb_width) && !(lc->boundary_flags & BOUNDARY_UPPER_TILE));
+    lc->ctb_up_right_flag = ((y_ctb > 0)  && (ctb_addr_in_slice+1 >= s->ps.sps->ctb_width) && (s->ps.pps->tile_id[ctb_addr_ts] == s->ps.pps->tile_id[s->ps.pps->ctb_addr_rs_to_ts[ctb_addr_rs+1 - s->ps.sps->ctb_width]]));
+    lc->ctb_up_left_flag = ((x_ctb > 0) && (y_ctb > 0)  && (ctb_addr_in_slice-1 >= s->ps.sps->ctb_width) && (s->ps.pps->tile_id[ctb_addr_ts] == s->ps.pps->tile_id[s->ps.pps->ctb_addr_rs_to_ts[ctb_addr_rs-1 - s->ps.sps->ctb_width]]));
+}
+
+static int hls_slice_data(HEVCContext *s)
+{
+    int ctb_size    = 1 << s->ps.sps->log2_ctb_size;
+    int more_data   = 1;
+    int x_ctb       = 0;
+    int y_ctb       = 0;
+    int ctb_addr_ts = s->ps.pps->ctb_addr_rs_to_ts[s->sh.slice_ctb_addr_rs];
+    int ret;
+
+    while (more_data && ctb_addr_ts < s->ps.sps->ctb_size) {
+        int ctb_addr_rs = s->ps.pps->ctb_addr_ts_to_rs[ctb_addr_ts];
+
+        x_ctb = (ctb_addr_rs % ((s->ps.sps->width + ctb_size - 1) >> s->ps.sps->log2_ctb_size)) << s->ps.sps->log2_ctb_size;
+        y_ctb = (ctb_addr_rs / ((s->ps.sps->width + ctb_size - 1) >> s->ps.sps->log2_ctb_size)) << s->ps.sps->log2_ctb_size;
+        hls_decode_neighbour(s, x_ctb, y_ctb, ctb_addr_ts);
+
+        ff_hevc_cabac_init(s, ctb_addr_ts);
+
+        hls_sao_param(s, x_ctb >> s->ps.sps->log2_ctb_size, y_ctb >> s->ps.sps->log2_ctb_size);
+
+        s->deblock[ctb_addr_rs].beta_offset = s->sh.beta_offset;
+        s->deblock[ctb_addr_rs].tc_offset   = s->sh.tc_offset;
+        s->filter_slice_edges[ctb_addr_rs]  = s->sh.slice_loop_filter_across_slices_enabled_flag;
+
+        ret = hls_coding_quadtree(s, x_ctb, y_ctb, s->ps.sps->log2_ctb_size, 0);
+        if (ret < 0)
+            return ret;
+        more_data = !ff_hevc_end_of_slice_flag_decode(s);
+
+        ctb_addr_ts++;
+        ff_hevc_save_states(s, ctb_addr_ts);
+        ff_hevc_hls_filters(s, x_ctb, y_ctb, ctb_size);
+    }
+
+    if (x_ctb + ctb_size >= s->ps.sps->width &&
+        y_ctb + ctb_size >= s->ps.sps->height)
+        ff_hevc_hls_filter(s, x_ctb, y_ctb);
+
+    return ctb_addr_ts;
+}
+
+static void restore_tqb_pixels(HEVCContext *s)
+{
+    int min_pu_size = 1 << s->ps.sps->log2_min_pu_size;
+    int x, y, c_idx;
+
+    for (c_idx = 0; c_idx < 3; c_idx++) {
+        ptrdiff_t stride = s->frame->linesize[c_idx];
+        int hshift       = s->ps.sps->hshift[c_idx];
+        int vshift       = s->ps.sps->vshift[c_idx];
+        for (y = 0; y < s->ps.sps->min_pu_height; y++) {
+            for (x = 0; x < s->ps.sps->min_pu_width; x++) {
+                if (s->is_pcm[y * s->ps.sps->min_pu_width + x]) {
+                    int n;
+                    int len      = min_pu_size >> hshift;
+                    uint8_t *src = &s->frame->data[c_idx][((y << s->ps.sps->log2_min_pu_size) >> vshift) * stride + (((x << s->ps.sps->log2_min_pu_size) >> hshift) << s->ps.sps->pixel_shift)];
+                    uint8_t *dst = &s->sao_frame->data[c_idx][((y << s->ps.sps->log2_min_pu_size) >> vshift) * stride + (((x << s->ps.sps->log2_min_pu_size) >> hshift) << s->ps.sps->pixel_shift)];
+                    for (n = 0; n < (min_pu_size >> vshift); n++) {
+                        memcpy(dst, src, len);
+                        src += stride;
+                        dst += stride;
+                    }
+                }
+            }
+        }
+    }
+}
+
+static int set_side_data(HEVCContext *s)
+{
+    AVFrame *out = s->ref->frame;
+
+    if (s->sei_frame_packing_present &&
+        s->frame_packing_arrangement_type >= 3 &&
+        s->frame_packing_arrangement_type <= 5 &&
+        s->content_interpretation_type > 0 &&
+        s->content_interpretation_type < 3) {
+        AVStereo3D *stereo = av_stereo3d_create_side_data(out);
+        if (!stereo)
+            return AVERROR(ENOMEM);
+
+        switch (s->frame_packing_arrangement_type) {
+        case 3:
+            if (s->quincunx_subsampling)
+                stereo->type = AV_STEREO3D_SIDEBYSIDE_QUINCUNX;
+            else
+                stereo->type = AV_STEREO3D_SIDEBYSIDE;
+            break;
+        case 4:
+            stereo->type = AV_STEREO3D_TOPBOTTOM;
+            break;
+        case 5:
+            stereo->type = AV_STEREO3D_FRAMESEQUENCE;
+            break;
+        }
+
+        if (s->content_interpretation_type == 2)
+            stereo->flags = AV_STEREO3D_FLAG_INVERT;
+    }
+
+    if (s->sei_display_orientation_present &&
+        (s->sei_anticlockwise_rotation || s->sei_hflip || s->sei_vflip)) {
+        double angle = s->sei_anticlockwise_rotation * 360 / (double) (1 << 16);
+        AVFrameSideData *rotation = av_frame_new_side_data(out,
+                                                           AV_FRAME_DATA_DISPLAYMATRIX,
+                                                           sizeof(int32_t) * 9);
+        if (!rotation)
+            return AVERROR(ENOMEM);
+
+        av_display_rotation_set((int32_t *)rotation->data, angle);
+        av_display_matrix_flip((int32_t *)rotation->data,
+                               s->sei_hflip, s->sei_vflip);
+    }
+
+    return 0;
+}
+
+static int hevc_frame_start(HEVCContext *s)
+{
+    HEVCLocalContext *lc = &s->HEVClc;
+    int ret;
+
+    memset(s->horizontal_bs, 0, 2 * s->bs_width * (s->bs_height + 1));
+    memset(s->vertical_bs,   0, 2 * s->bs_width * (s->bs_height + 1));
+    memset(s->cbf_luma,      0, s->ps.sps->min_tb_width * s->ps.sps->min_tb_height);
+    memset(s->is_pcm,        0, s->ps.sps->min_pu_width * s->ps.sps->min_pu_height);
+
+    lc->start_of_tiles_x = 0;
+    s->is_decoded        = 0;
+    s->first_nal_type    = s->nal_unit_type;
+
+    if (s->ps.pps->tiles_enabled_flag)
+        lc->end_of_tiles_x = s->ps.pps->column_width[0] << s->ps.sps->log2_ctb_size;
+
+    ret = ff_hevc_set_new_ref(s, s->ps.sps->sao_enabled ? &s->sao_frame : &s->frame,
+                              s->poc);
+    if (ret < 0)
+        goto fail;
+
+    ret = ff_hevc_frame_rps(s);
+    if (ret < 0) {
+        av_log(s->avctx, AV_LOG_ERROR, "Error constructing the frame RPS.\n");
+        goto fail;
+    }
+
+    s->ref->frame->key_frame = IS_IRAP(s);
+
+    ret = set_side_data(s);
+    if (ret < 0)
+        goto fail;
+
+    av_frame_unref(s->output_frame);
+    ret = ff_hevc_output_frame(s, s->output_frame, 0);
+    if (ret < 0)
+        goto fail;
+
+    ff_thread_finish_setup(s->avctx);
+
+    return 0;
+
+fail:
+    if (s->ref)
+        ff_hevc_unref_frame(s, s->ref, ~0);
+    s->ref = NULL;
+    return ret;
+}
+
+static int decode_nal_unit(HEVCContext *s, const H2645NAL *nal)
+{
+    HEVCLocalContext *lc = &s->HEVClc;
+    GetBitContext *gb    = &lc->gb;
+    int ctb_addr_ts, ret;
+
+    *gb              = nal->gb;
+    s->nal_unit_type = nal->type;
+    s->temporal_id   = nal->temporal_id;
+
+    switch (s->nal_unit_type) {
+    case NAL_VPS:
+        ret = ff_hevc_decode_nal_vps(gb, s->avctx, &s->ps);
+        if (ret < 0)
+            goto fail;
+        break;
+    case NAL_SPS:
+        ret = ff_hevc_decode_nal_sps(gb, s->avctx, &s->ps,
+                                     s->apply_defdispwin);
+        if (ret < 0)
+            goto fail;
+        break;
+    case NAL_PPS:
+        ret = ff_hevc_decode_nal_pps(gb, s->avctx, &s->ps);
+        if (ret < 0)
+            goto fail;
+        break;
+    case NAL_SEI_PREFIX:
+    case NAL_SEI_SUFFIX:
+        ret = ff_hevc_decode_nal_sei(s);
+        if (ret < 0)
+            goto fail;
+        break;
+    case NAL_TRAIL_R:
+    case NAL_TRAIL_N:
+    case NAL_TSA_N:
+    case NAL_TSA_R:
+    case NAL_STSA_N:
+    case NAL_STSA_R:
+    case NAL_BLA_W_LP:
+    case NAL_BLA_W_RADL:
+    case NAL_BLA_N_LP:
+    case NAL_IDR_W_RADL:
+    case NAL_IDR_N_LP:
+    case NAL_CRA_NUT:
+    case NAL_RADL_N:
+    case NAL_RADL_R:
+    case NAL_RASL_N:
+    case NAL_RASL_R:
+        ret = hls_slice_header(s);
+        if (ret < 0)
+            return ret;
+
+        if (s->max_ra == INT_MAX) {
+            if (s->nal_unit_type == NAL_CRA_NUT || IS_BLA(s)) {
+                s->max_ra = s->poc;
+            } else {
+                if (IS_IDR(s))
+                    s->max_ra = INT_MIN;
+            }
+        }
+
+        if ((s->nal_unit_type == NAL_RASL_R || s->nal_unit_type == NAL_RASL_N) &&
+            s->poc <= s->max_ra) {
+            s->is_decoded = 0;
+            break;
+        } else {
+            if (s->nal_unit_type == NAL_RASL_R && s->poc > s->max_ra)
+                s->max_ra = INT_MIN;
+        }
+
+        if (s->sh.first_slice_in_pic_flag) {
+            ret = hevc_frame_start(s);
+            if (ret < 0)
+                return ret;
+        } else if (!s->ref) {
+            av_log(s->avctx, AV_LOG_ERROR, "First slice in a frame missing.\n");
+            goto fail;
+        }
+
+        if (s->nal_unit_type != s->first_nal_type) {
+            av_log(s->avctx, AV_LOG_ERROR,
+                   "Non-matching NAL types of the VCL NALUs: %d %d\n",
+                   s->first_nal_type, s->nal_unit_type);
+            return AVERROR_INVALIDDATA;
+        }
+
+        if (!s->sh.dependent_slice_segment_flag &&
+            s->sh.slice_type != I_SLICE) {
+            ret = ff_hevc_slice_rpl(s);
+            if (ret < 0) {
+                av_log(s->avctx, AV_LOG_WARNING,
+                       "Error constructing the reference lists for the current slice.\n");
+                goto fail;
+            }
+        }
+
+        if (s->sh.first_slice_in_pic_flag && s->avctx->hwaccel) {
+            ret = s->avctx->hwaccel->start_frame(s->avctx, NULL, 0);
+            if (ret < 0)
+                goto fail;
+        }
+
+        if (s->avctx->hwaccel) {
+            ret = s->avctx->hwaccel->decode_slice(s->avctx, nal->raw_data, nal->raw_size);
+            if (ret < 0)
+                goto fail;
+        } else {
+            ctb_addr_ts = hls_slice_data(s);
+            if (ctb_addr_ts >= (s->ps.sps->ctb_width * s->ps.sps->ctb_height)) {
+                s->is_decoded = 1;
+                if ((s->ps.pps->transquant_bypass_enable_flag ||
+                     (s->ps.sps->pcm.loop_filter_disable_flag && s->ps.sps->pcm_enabled_flag)) &&
+                    s->ps.sps->sao_enabled)
+                    restore_tqb_pixels(s);
+            }
+
+            if (ctb_addr_ts < 0) {
+                ret = ctb_addr_ts;
+                goto fail;
+            }
+        }
+        break;
+    case NAL_EOS_NUT:
+    case NAL_EOB_NUT:
+        s->seq_decode = (s->seq_decode + 1) & 0xff;
+        s->max_ra     = INT_MAX;
+        break;
+    case NAL_AUD:
+    case NAL_FD_NUT:
+        break;
+    default:
+        av_log(s->avctx, AV_LOG_INFO,
+               "Skipping NAL unit %d\n", s->nal_unit_type);
+    }
+
+    return 0;
+fail:
+    if (s->avctx->err_recognition & AV_EF_EXPLODE)
+        return ret;
+    return 0;
+}
+
+static int decode_nal_units(HEVCContext *s, const uint8_t *buf, int length)
+{
+    int i, ret = 0;
+
+    s->ref = NULL;
+    s->eos = 0;
+
+    /* split the input packet into NAL units, so we know the upper bound on the
+     * number of slices in the frame */
+    ret = ff_h2645_packet_split(&s->pkt, buf, length, s->avctx, s->is_nalff,
+                                s->nal_length_size, s->avctx->codec_id);
+    if (ret < 0) {
+        av_log(s->avctx, AV_LOG_ERROR,
+               "Error splitting the input into NAL units.\n");
+        return ret;
+    }
+
+    for (i = 0; i < s->pkt.nb_nals; i++) {
+        if (s->pkt.nals[i].type == NAL_EOB_NUT ||
+            s->pkt.nals[i].type == NAL_EOS_NUT)
+            s->eos = 1;
+    }
+
+    /* decode the NAL units */
+    for (i = 0; i < s->pkt.nb_nals; i++) {
+        ret = decode_nal_unit(s, &s->pkt.nals[i]);
+        if (ret < 0) {
+            av_log(s->avctx, AV_LOG_WARNING,
+                   "Error parsing NAL unit #%d.\n", i);
+            goto fail;
+        }
+    }
+
+fail:
+    if (s->ref)
+        ff_thread_report_progress(&s->ref->tf, INT_MAX, 0);
+
+    return ret;
+}
+
+static void print_md5(void *log_ctx, int level, uint8_t md5[16])
+{
+    int i;
+    for (i = 0; i < 16; i++)
+        av_log(log_ctx, level, "%02"PRIx8, md5[i]);
+}
+
+static int verify_md5(HEVCContext *s, AVFrame *frame)
+{
+    const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(frame->format);
+    int pixel_shift;
+    int i, j;
+
+    if (!desc)
+        return AVERROR(EINVAL);
+
+    pixel_shift = desc->comp[0].depth > 8;
+
+    av_log(s->avctx, AV_LOG_DEBUG, "Verifying checksum for frame with POC %d: ",
+           s->poc);
+
+    /* the checksums are LE, so we have to byteswap for >8bpp formats
+     * on BE arches */
+#if HAVE_BIGENDIAN
+    if (pixel_shift && !s->checksum_buf) {
+        av_fast_malloc(&s->checksum_buf, &s->checksum_buf_size,
+                       FFMAX3(frame->linesize[0], frame->linesize[1],
+                              frame->linesize[2]));
+        if (!s->checksum_buf)
+            return AVERROR(ENOMEM);
+    }
+#endif
+
+    for (i = 0; frame->data[i]; i++) {
+        int width  = s->avctx->coded_width;
+        int height = s->avctx->coded_height;
+        int w = (i == 1 || i == 2) ? (width  >> desc->log2_chroma_w) : width;
+        int h = (i == 1 || i == 2) ? (height >> desc->log2_chroma_h) : height;
+        uint8_t md5[16];
+
+        av_md5_init(s->md5_ctx);
+        for (j = 0; j < h; j++) {
+            const uint8_t *src = frame->data[i] + j * frame->linesize[i];
+#if HAVE_BIGENDIAN
+            if (pixel_shift) {
+                s->bdsp.bswap16_buf((uint16_t *) s->checksum_buf,
+                                    (const uint16_t *) src, w);
+                src = s->checksum_buf;
+            }
+#endif
+            av_md5_update(s->md5_ctx, src, w << pixel_shift);
+        }
+        av_md5_final(s->md5_ctx, md5);
+
+        if (!memcmp(md5, s->md5[i], 16)) {
+            av_log   (s->avctx, AV_LOG_DEBUG, "plane %d - correct ", i);
+            print_md5(s->avctx, AV_LOG_DEBUG, md5);
+            av_log   (s->avctx, AV_LOG_DEBUG, "; ");
+        } else {
+            av_log   (s->avctx, AV_LOG_ERROR, "mismatching checksum of plane %d - ", i);
+            print_md5(s->avctx, AV_LOG_ERROR, md5);
+            av_log   (s->avctx, AV_LOG_ERROR, " != ");
+            print_md5(s->avctx, AV_LOG_ERROR, s->md5[i]);
+            av_log   (s->avctx, AV_LOG_ERROR, "\n");
+            return AVERROR_INVALIDDATA;
+        }
+    }
+
+    av_log(s->avctx, AV_LOG_DEBUG, "\n");
+
+    return 0;
+}
+
+static int hevc_decode_frame(AVCodecContext *avctx, void *data, int *got_output,
+                             AVPacket *avpkt)
+{
+    int ret;
+    HEVCContext *s = avctx->priv_data;
+
+    if (!avpkt->size) {
+        ret = ff_hevc_output_frame(s, data, 1);
+        if (ret < 0)
+            return ret;
+
+        *got_output = ret;
+        return 0;
+    }
+
+    s->ref = NULL;
+    ret    = decode_nal_units(s, avpkt->data, avpkt->size);
+    if (ret < 0)
+        return ret;
+
+    if (avctx->hwaccel) {
+        if (s->ref && avctx->hwaccel->end_frame(avctx) < 0)
+            av_log(avctx, AV_LOG_ERROR,
+                   "hardware accelerator failed to decode picture\n");
+    } else {
+        /* verify the SEI checksum */
+        if (avctx->err_recognition & AV_EF_CRCCHECK && s->is_decoded &&
+            s->is_md5) {
+            ret = verify_md5(s, s->ref->frame);
+            if (ret < 0 && avctx->err_recognition & AV_EF_EXPLODE) {
+                ff_hevc_unref_frame(s, s->ref, ~0);
+                return ret;
+            }
+        }
+    }
+    s->is_md5 = 0;
+
+    if (s->is_decoded) {
+        av_log(avctx, AV_LOG_DEBUG, "Decoded frame with POC %d.\n", s->poc);
+        s->is_decoded = 0;
+    }
+
+    if (s->output_frame->buf[0]) {
+        av_frame_move_ref(data, s->output_frame);
+        *got_output = 1;
+    }
+
+    return avpkt->size;
+}
+
+static int hevc_ref_frame(HEVCContext *s, HEVCFrame *dst, HEVCFrame *src)
+{
+    int ret = ff_thread_ref_frame(&dst->tf, &src->tf);
+    if (ret < 0)
+        return ret;
+
+    dst->tab_mvf_buf = av_buffer_ref(src->tab_mvf_buf);
+    if (!dst->tab_mvf_buf)
+        goto fail;
+    dst->tab_mvf = src->tab_mvf;
+
+    dst->rpl_tab_buf = av_buffer_ref(src->rpl_tab_buf);
+    if (!dst->rpl_tab_buf)
+        goto fail;
+    dst->rpl_tab = src->rpl_tab;
+
+    dst->rpl_buf = av_buffer_ref(src->rpl_buf);
+    if (!dst->rpl_buf)
+        goto fail;
+
+    dst->poc        = src->poc;
+    dst->ctb_count  = src->ctb_count;
+    dst->window     = src->window;
+    dst->flags      = src->flags;
+    dst->sequence   = src->sequence;
+
+    if (src->hwaccel_picture_private) {
+        dst->hwaccel_priv_buf = av_buffer_ref(src->hwaccel_priv_buf);
+        if (!dst->hwaccel_priv_buf)
+            goto fail;
+        dst->hwaccel_picture_private = dst->hwaccel_priv_buf->data;
+    }
+
+    return 0;
+fail:
+    ff_hevc_unref_frame(s, dst, ~0);
+    return AVERROR(ENOMEM);
+}
+
+static av_cold int hevc_decode_free(AVCodecContext *avctx)
+{
+    HEVCContext       *s = avctx->priv_data;
+    int i;
+
+    pic_arrays_free(s);
+
+    av_freep(&s->md5_ctx);
+
+    av_frame_free(&s->tmp_frame);
+    av_frame_free(&s->output_frame);
+
+    for (i = 0; i < FF_ARRAY_ELEMS(s->DPB); i++) {
+        ff_hevc_unref_frame(s, &s->DPB[i], ~0);
+        av_frame_free(&s->DPB[i].frame);
+    }
+
+    for (i = 0; i < FF_ARRAY_ELEMS(s->ps.vps_list); i++)
+        av_buffer_unref(&s->ps.vps_list[i]);
+    for (i = 0; i < FF_ARRAY_ELEMS(s->ps.sps_list); i++)
+        av_buffer_unref(&s->ps.sps_list[i]);
+    for (i = 0; i < FF_ARRAY_ELEMS(s->ps.pps_list); i++)
+        av_buffer_unref(&s->ps.pps_list[i]);
+
+    ff_h2645_packet_uninit(&s->pkt);
+
+    return 0;
+}
+
+static av_cold int hevc_init_context(AVCodecContext *avctx)
+{
+    HEVCContext *s = avctx->priv_data;
+    int i;
+
+    s->avctx = avctx;
+
+    s->tmp_frame = av_frame_alloc();
+    if (!s->tmp_frame)
+        goto fail;
+
+    s->output_frame = av_frame_alloc();
+    if (!s->output_frame)
+        goto fail;
+
+    for (i = 0; i < FF_ARRAY_ELEMS(s->DPB); i++) {
+        s->DPB[i].frame = av_frame_alloc();
+        if (!s->DPB[i].frame)
+            goto fail;
+        s->DPB[i].tf.f = s->DPB[i].frame;
+    }
+
+    s->max_ra = INT_MAX;
+
+    s->md5_ctx = av_md5_alloc();
+    if (!s->md5_ctx)
+        goto fail;
+
+    ff_bswapdsp_init(&s->bdsp);
+
+    s->context_initialized = 1;
+
+    return 0;
+
+fail:
+    hevc_decode_free(avctx);
+    return AVERROR(ENOMEM);
+}
+
+static int hevc_update_thread_context(AVCodecContext *dst,
+                                      const AVCodecContext *src)
+{
+    HEVCContext *s  = dst->priv_data;
+    HEVCContext *s0 = src->priv_data;
+    int i, ret;
+
+    if (!s->context_initialized) {
+        ret = hevc_init_context(dst);
+        if (ret < 0)
+            return ret;
+    }
+
+    for (i = 0; i < FF_ARRAY_ELEMS(s->DPB); i++) {
+        ff_hevc_unref_frame(s, &s->DPB[i], ~0);
+        if (s0->DPB[i].frame->buf[0]) {
+            ret = hevc_ref_frame(s, &s->DPB[i], &s0->DPB[i]);
+            if (ret < 0)
+                return ret;
+        }
+    }
+
+    for (i = 0; i < FF_ARRAY_ELEMS(s->ps.vps_list); i++) {
+        av_buffer_unref(&s->ps.vps_list[i]);
+        if (s0->ps.vps_list[i]) {
+            s->ps.vps_list[i] = av_buffer_ref(s0->ps.vps_list[i]);
+            if (!s->ps.vps_list[i])
+                return AVERROR(ENOMEM);
+        }
+    }
+
+    for (i = 0; i < FF_ARRAY_ELEMS(s->ps.sps_list); i++) {
+        av_buffer_unref(&s->ps.sps_list[i]);
+        if (s0->ps.sps_list[i]) {
+            s->ps.sps_list[i] = av_buffer_ref(s0->ps.sps_list[i]);
+            if (!s->ps.sps_list[i])
+                return AVERROR(ENOMEM);
+        }
+    }
+
+    for (i = 0; i < FF_ARRAY_ELEMS(s->ps.pps_list); i++) {
+        av_buffer_unref(&s->ps.pps_list[i]);
+        if (s0->ps.pps_list[i]) {
+            s->ps.pps_list[i] = av_buffer_ref(s0->ps.pps_list[i]);
+            if (!s->ps.pps_list[i])
+                return AVERROR(ENOMEM);
+        }
+    }
+
+    if (s->ps.sps != s0->ps.sps)
+        ret = set_sps(s, s0->ps.sps);
+
+    s->seq_decode = s0->seq_decode;
+    s->seq_output = s0->seq_output;
+    s->pocTid0    = s0->pocTid0;
+    s->max_ra     = s0->max_ra;
+
+    s->is_nalff        = s0->is_nalff;
+    s->nal_length_size = s0->nal_length_size;
+
+    if (s0->eos) {
+        s->seq_decode = (s->seq_decode + 1) & 0xff;
+        s->max_ra = INT_MAX;
+    }
+
+    return 0;
+}
+
+static int hevc_decode_extradata(HEVCContext *s)
+{
+    AVCodecContext *avctx = s->avctx;
+    GetByteContext gb;
+    int ret, i;
+
+    bytestream2_init(&gb, avctx->extradata, avctx->extradata_size);
+
+    if (avctx->extradata_size > 3 &&
+        (avctx->extradata[0] || avctx->extradata[1] ||
+         avctx->extradata[2] > 1)) {
+        /* It seems the extradata is encoded as hvcC format.
+         * Temporarily, we support configurationVersion==0 until 14496-15 3rd
+         * is finalized. When finalized, configurationVersion will be 1 and we
+         * can recognize hvcC by checking if avctx->extradata[0]==1 or not. */
+        int i, j, num_arrays, nal_len_size;
+
+        s->is_nalff = 1;
+
+        bytestream2_skip(&gb, 21);
+        nal_len_size = (bytestream2_get_byte(&gb) & 3) + 1;
+        num_arrays   = bytestream2_get_byte(&gb);
+
+        /* nal units in the hvcC always have length coded with 2 bytes,
+         * so put a fake nal_length_size = 2 while parsing them */
+        s->nal_length_size = 2;
+
+        /* Decode nal units from hvcC. */
+        for (i = 0; i < num_arrays; i++) {
+            int type = bytestream2_get_byte(&gb) & 0x3f;
+            int cnt  = bytestream2_get_be16(&gb);
+
+            for (j = 0; j < cnt; j++) {
+                // +2 for the nal size field
+                int nalsize = bytestream2_peek_be16(&gb) + 2;
+                if (bytestream2_get_bytes_left(&gb) < nalsize) {
+                    av_log(s->avctx, AV_LOG_ERROR,
+                           "Invalid NAL unit size in extradata.\n");
+                    return AVERROR_INVALIDDATA;
+                }
+
+                ret = decode_nal_units(s, gb.buffer, nalsize);
+                if (ret < 0) {
+                    av_log(avctx, AV_LOG_ERROR,
+                           "Decoding nal unit %d %d from hvcC failed\n",
+                           type, i);
+                    return ret;
+                }
+                bytestream2_skip(&gb, nalsize);
+            }
+        }
+
+        /* Now store right nal length size, that will be used to parse
+         * all other nals */
+        s->nal_length_size = nal_len_size;
+    } else {
+        s->is_nalff = 0;
+        ret = decode_nal_units(s, avctx->extradata, avctx->extradata_size);
+        if (ret < 0)
+            return ret;
+    }
+
+    /* export stream parameters from the first SPS */
+    for (i = 0; i < FF_ARRAY_ELEMS(s->ps.sps_list); i++) {
+        if (s->ps.sps_list[i]) {
+            const HEVCSPS *sps = (const HEVCSPS*)s->ps.sps_list[i]->data;
+            export_stream_params(s->avctx, &s->ps, sps);
+            break;
+        }
+    }
+
+    return 0;
+}
+
+static av_cold int hevc_decode_init(AVCodecContext *avctx)
+{
+    HEVCContext *s = avctx->priv_data;
+    int ret;
+
+    avctx->internal->allocate_progress = 1;
+
+    ret = hevc_init_context(avctx);
+    if (ret < 0)
+        return ret;
+
+    if (avctx->extradata_size > 0 && avctx->extradata) {
+        ret = hevc_decode_extradata(s);
+        if (ret < 0) {
+            hevc_decode_free(avctx);
+            return ret;
+        }
+    }
+
+    return 0;
+}
+
+static av_cold int hevc_init_thread_copy(AVCodecContext *avctx)
+{
+    HEVCContext *s = avctx->priv_data;
+    int ret;
+
+    memset(s, 0, sizeof(*s));
+
+    ret = hevc_init_context(avctx);
+    if (ret < 0)
+        return ret;
+
+    return 0;
+}
+
+static void hevc_decode_flush(AVCodecContext *avctx)
+{
+    HEVCContext *s = avctx->priv_data;
+    ff_hevc_flush_dpb(s);
+    s->max_ra = INT_MAX;
+}
+
+#define OFFSET(x) offsetof(HEVCContext, x)
+#define PAR (AV_OPT_FLAG_DECODING_PARAM | AV_OPT_FLAG_VIDEO_PARAM)
+
+static const AVOption options[] = {
+    { "apply_defdispwin", "Apply default display window from VUI", OFFSET(apply_defdispwin),
+        AV_OPT_TYPE_INT, {.i64 = 0}, 0, 1, PAR },
+    { NULL },
+};
+
+static const AVClass hevc_decoder_class = {
+    .class_name = "HEVC decoder",
+    .item_name  = av_default_item_name,
+    .option     = options,
+    .version    = LIBAVUTIL_VERSION_INT,
+};
+
+AVCodec ff_hevc_decoder = {
+    .name                  = "hevc",
+    .long_name             = NULL_IF_CONFIG_SMALL("HEVC (High Efficiency Video Coding)"),
+    .type                  = AVMEDIA_TYPE_VIDEO,
+    .id                    = AV_CODEC_ID_HEVC,
+    .priv_data_size        = sizeof(HEVCContext),
+    .priv_class            = &hevc_decoder_class,
+    .init                  = hevc_decode_init,
+    .close                 = hevc_decode_free,
+    .decode                = hevc_decode_frame,
+    .flush                 = hevc_decode_flush,
+    .update_thread_context = hevc_update_thread_context,
+    .init_thread_copy      = hevc_init_thread_copy,
+    .capabilities          = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_DELAY |
+                             AV_CODEC_CAP_FRAME_THREADS,
+    .profiles              = NULL_IF_CONFIG_SMALL(ff_hevc_profiles),
+};
diff --git a/libavcodec/hevcdec.h b/libavcodec/hevcdec.h
new file mode 100644 (file)
index 0000000..ba261e6
--- /dev/null
@@ -0,0 +1,1016 @@
+/*
+ * HEVC video decoder
+ *
+ * Copyright (C) 2012 - 2013 Guillaume Martres
+ *
+ * This file is part of Libav.
+ *
+ * Libav is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * Libav is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVCODEC_HEVCDEC_H
+#define AVCODEC_HEVCDEC_H
+
+#include <stddef.h>
+#include <stdint.h>
+
+#include "libavutil/buffer.h"
+#include "libavutil/md5.h"
+
+#include "avcodec.h"
+#include "bswapdsp.h"
+#include "cabac.h"
+#include "get_bits.h"
+#include "h2645_parse.h"
+#include "hevcdsp.h"
+#include "internal.h"
+#include "thread.h"
+#include "videodsp.h"
+
+#define MAX_DPB_SIZE 16 // A.4.1
+#define MAX_REFS 16
+
+/**
+ * 7.4.2.1
+ */
+#define MAX_SUB_LAYERS 7
+#define MAX_VPS_COUNT 16
+#define MAX_SPS_COUNT 32
+#define MAX_PPS_COUNT 256
+#define MAX_SHORT_TERM_RPS_COUNT 64
+#define MAX_CU_SIZE 128
+
+//TODO: check if this is really the maximum
+#define MAX_TRANSFORM_DEPTH 5
+
+#define MAX_TB_SIZE 32
+#define MAX_PB_SIZE 64
+#define MAX_LOG2_CTB_SIZE 6
+#define MAX_QP 51
+#define DEFAULT_INTRA_TC_OFFSET 2
+
+#define HEVC_CONTEXTS 183
+
+#define MRG_MAX_NUM_CANDS     5
+
+#define L0 0
+#define L1 1
+
+#define EPEL_EXTRA_BEFORE 1
+#define EPEL_EXTRA_AFTER  2
+#define EPEL_EXTRA        3
+
+#define EDGE_EMU_BUFFER_STRIDE 80
+
+/**
+ * Value of the luma sample at position (x, y) in the 2D array tab.
+ */
+#define SAMPLE(tab, x, y) ((tab)[(y) * s->sps->width + (x)])
+#define SAMPLE_CTB(tab, x, y) ((tab)[(y) * min_cb_width + (x)])
+
+#define IS_IDR(s) (s->nal_unit_type == NAL_IDR_W_RADL || s->nal_unit_type == NAL_IDR_N_LP)
+#define IS_BLA(s) (s->nal_unit_type == NAL_BLA_W_RADL || s->nal_unit_type == NAL_BLA_W_LP || \
+                   s->nal_unit_type == NAL_BLA_N_LP)
+#define IS_IRAP(s) (s->nal_unit_type >= 16 && s->nal_unit_type <= 23)
+
+#define FFUDIV(a,b) (((a) > 0 ? (a) : (a) - (b) + 1) / (b))
+#define FFUMOD(a,b) ((a) - (b) * FFUDIV(a,b))
+
+/**
+ * Table 7-3: NAL unit type codes
+ */
+enum NALUnitType {
+    NAL_TRAIL_N    = 0,
+    NAL_TRAIL_R    = 1,
+    NAL_TSA_N      = 2,
+    NAL_TSA_R      = 3,
+    NAL_STSA_N     = 4,
+    NAL_STSA_R     = 5,
+    NAL_RADL_N     = 6,
+    NAL_RADL_R     = 7,
+    NAL_RASL_N     = 8,
+    NAL_RASL_R     = 9,
+    NAL_BLA_W_LP   = 16,
+    NAL_BLA_W_RADL = 17,
+    NAL_BLA_N_LP   = 18,
+    NAL_IDR_W_RADL = 19,
+    NAL_IDR_N_LP   = 20,
+    NAL_CRA_NUT    = 21,
+    NAL_VPS        = 32,
+    NAL_SPS        = 33,
+    NAL_PPS        = 34,
+    NAL_AUD        = 35,
+    NAL_EOS_NUT    = 36,
+    NAL_EOB_NUT    = 37,
+    NAL_FD_NUT     = 38,
+    NAL_SEI_PREFIX = 39,
+    NAL_SEI_SUFFIX = 40,
+};
+
+enum RPSType {
+    ST_CURR_BEF = 0,
+    ST_CURR_AFT,
+    ST_FOLL,
+    LT_CURR,
+    LT_FOLL,
+    NB_RPS_TYPE,
+};
+
+enum SliceType {
+    B_SLICE = 0,
+    P_SLICE = 1,
+    I_SLICE = 2,
+};
+
+enum SyntaxElement {
+    SAO_MERGE_FLAG = 0,
+    SAO_TYPE_IDX,
+    SAO_EO_CLASS,
+    SAO_BAND_POSITION,
+    SAO_OFFSET_ABS,
+    SAO_OFFSET_SIGN,
+    END_OF_SLICE_FLAG,
+    SPLIT_CODING_UNIT_FLAG,
+    CU_TRANSQUANT_BYPASS_FLAG,
+    SKIP_FLAG,
+    CU_QP_DELTA,
+    PRED_MODE_FLAG,
+    PART_MODE,
+    PCM_FLAG,
+    PREV_INTRA_LUMA_PRED_FLAG,
+    MPM_IDX,
+    REM_INTRA_LUMA_PRED_MODE,
+    INTRA_CHROMA_PRED_MODE,
+    MERGE_FLAG,
+    MERGE_IDX,
+    INTER_PRED_IDC,
+    REF_IDX_L0,
+    REF_IDX_L1,
+    ABS_MVD_GREATER0_FLAG,
+    ABS_MVD_GREATER1_FLAG,
+    ABS_MVD_MINUS2,
+    MVD_SIGN_FLAG,
+    MVP_LX_FLAG,
+    NO_RESIDUAL_DATA_FLAG,
+    SPLIT_TRANSFORM_FLAG,
+    CBF_LUMA,
+    CBF_CB_CR,
+    TRANSFORM_SKIP_FLAG,
+    LAST_SIGNIFICANT_COEFF_X_PREFIX,
+    LAST_SIGNIFICANT_COEFF_Y_PREFIX,
+    LAST_SIGNIFICANT_COEFF_X_SUFFIX,
+    LAST_SIGNIFICANT_COEFF_Y_SUFFIX,
+    SIGNIFICANT_COEFF_GROUP_FLAG,
+    SIGNIFICANT_COEFF_FLAG,
+    COEFF_ABS_LEVEL_GREATER1_FLAG,
+    COEFF_ABS_LEVEL_GREATER2_FLAG,
+    COEFF_ABS_LEVEL_REMAINING,
+    COEFF_SIGN_FLAG,
+};
+
+enum PartMode {
+    PART_2Nx2N = 0,
+    PART_2NxN  = 1,
+    PART_Nx2N  = 2,
+    PART_NxN   = 3,
+    PART_2NxnU = 4,
+    PART_2NxnD = 5,
+    PART_nLx2N = 6,
+    PART_nRx2N = 7,
+};
+
+enum PredMode {
+    MODE_INTER = 0,
+    MODE_INTRA,
+    MODE_SKIP,
+};
+
+enum InterPredIdc {
+    PRED_L0 = 0,
+    PRED_L1,
+    PRED_BI,
+};
+
+enum IntraPredMode {
+    INTRA_PLANAR = 0,
+    INTRA_DC,
+    INTRA_ANGULAR_2,
+    INTRA_ANGULAR_3,
+    INTRA_ANGULAR_4,
+    INTRA_ANGULAR_5,
+    INTRA_ANGULAR_6,
+    INTRA_ANGULAR_7,
+    INTRA_ANGULAR_8,
+    INTRA_ANGULAR_9,
+    INTRA_ANGULAR_10,
+    INTRA_ANGULAR_11,
+    INTRA_ANGULAR_12,
+    INTRA_ANGULAR_13,
+    INTRA_ANGULAR_14,
+    INTRA_ANGULAR_15,
+    INTRA_ANGULAR_16,
+    INTRA_ANGULAR_17,
+    INTRA_ANGULAR_18,
+    INTRA_ANGULAR_19,
+    INTRA_ANGULAR_20,
+    INTRA_ANGULAR_21,
+    INTRA_ANGULAR_22,
+    INTRA_ANGULAR_23,
+    INTRA_ANGULAR_24,
+    INTRA_ANGULAR_25,
+    INTRA_ANGULAR_26,
+    INTRA_ANGULAR_27,
+    INTRA_ANGULAR_28,
+    INTRA_ANGULAR_29,
+    INTRA_ANGULAR_30,
+    INTRA_ANGULAR_31,
+    INTRA_ANGULAR_32,
+    INTRA_ANGULAR_33,
+    INTRA_ANGULAR_34,
+};
+
+enum SAOType {
+    SAO_NOT_APPLIED = 0,
+    SAO_BAND,
+    SAO_EDGE,
+};
+
+enum SAOEOClass {
+    SAO_EO_HORIZ = 0,
+    SAO_EO_VERT,
+    SAO_EO_135D,
+    SAO_EO_45D,
+};
+
+enum ScanType {
+    SCAN_DIAG = 0,
+    SCAN_HORIZ,
+    SCAN_VERT,
+};
+
+typedef struct ShortTermRPS {
+    unsigned int num_negative_pics;
+    int num_delta_pocs;
+    int rps_idx_num_delta_pocs;
+    int32_t delta_poc[32];
+    uint8_t used[32];
+} ShortTermRPS;
+
+typedef struct LongTermRPS {
+    int     poc[32];
+    uint8_t used[32];
+    uint8_t nb_refs;
+} LongTermRPS;
+
+typedef struct RefPicList {
+    struct HEVCFrame *ref[MAX_REFS];
+    int list[MAX_REFS];
+    int isLongTerm[MAX_REFS];
+    int nb_refs;
+} RefPicList;
+
+typedef struct RefPicListTab {
+    RefPicList refPicList[2];
+} RefPicListTab;
+
+typedef struct HEVCWindow {
+    unsigned int left_offset;
+    unsigned int right_offset;
+    unsigned int top_offset;
+    unsigned int bottom_offset;
+} HEVCWindow;
+
+typedef struct VUI {
+    AVRational sar;
+
+    int overscan_info_present_flag;
+    int overscan_appropriate_flag;
+
+    int video_signal_type_present_flag;
+    int video_format;
+    int video_full_range_flag;
+    int colour_description_present_flag;
+    uint8_t colour_primaries;
+    uint8_t transfer_characteristic;
+    uint8_t matrix_coeffs;
+
+    int chroma_loc_info_present_flag;
+    int chroma_sample_loc_type_top_field;
+    int chroma_sample_loc_type_bottom_field;
+    int neutra_chroma_indication_flag;
+
+    int field_seq_flag;
+    int frame_field_info_present_flag;
+
+    int default_display_window_flag;
+    HEVCWindow def_disp_win;
+
+    int vui_timing_info_present_flag;
+    uint32_t vui_num_units_in_tick;
+    uint32_t vui_time_scale;
+    int vui_poc_proportional_to_timing_flag;
+    int vui_num_ticks_poc_diff_one_minus1;
+    int vui_hrd_parameters_present_flag;
+
+    int bitstream_restriction_flag;
+    int tiles_fixed_structure_flag;
+    int motion_vectors_over_pic_boundaries_flag;
+    int restricted_ref_pic_lists_flag;
+    int min_spatial_segmentation_idc;
+    int max_bytes_per_pic_denom;
+    int max_bits_per_min_cu_denom;
+    int log2_max_mv_length_horizontal;
+    int log2_max_mv_length_vertical;
+} VUI;
+
+typedef struct PTLCommon {
+    uint8_t profile_space;
+    uint8_t tier_flag;
+    uint8_t profile_idc;
+    uint8_t profile_compatibility_flag[32];
+    uint8_t level_idc;
+    uint8_t progressive_source_flag;
+    uint8_t interlaced_source_flag;
+    uint8_t non_packed_constraint_flag;
+    uint8_t frame_only_constraint_flag;
+} PTLCommon;
+
+typedef struct PTL {
+    PTLCommon general_ptl;
+    PTLCommon sub_layer_ptl[MAX_SUB_LAYERS];
+
+    uint8_t sub_layer_profile_present_flag[MAX_SUB_LAYERS];
+    uint8_t sub_layer_level_present_flag[MAX_SUB_LAYERS];
+} PTL;
+
+typedef struct HEVCVPS {
+    uint8_t vps_temporal_id_nesting_flag;
+    int vps_max_layers;
+    int vps_max_sub_layers; ///< vps_max_temporal_layers_minus1 + 1
+
+    PTL ptl;
+    int vps_sub_layer_ordering_info_present_flag;
+    unsigned int vps_max_dec_pic_buffering[MAX_SUB_LAYERS];
+    unsigned int vps_num_reorder_pics[MAX_SUB_LAYERS];
+    unsigned int vps_max_latency_increase[MAX_SUB_LAYERS];
+    int vps_max_layer_id;
+    int vps_num_layer_sets; ///< vps_num_layer_sets_minus1 + 1
+    uint8_t vps_timing_info_present_flag;
+    uint32_t vps_num_units_in_tick;
+    uint32_t vps_time_scale;
+    uint8_t vps_poc_proportional_to_timing_flag;
+    int vps_num_ticks_poc_diff_one; ///< vps_num_ticks_poc_diff_one_minus1 + 1
+    int vps_num_hrd_parameters;
+} HEVCVPS;
+
+typedef struct ScalingList {
+    /* This is a little wasteful, since sizeID 0 only needs 8 coeffs,
+     * and size ID 3 only has 2 arrays, not 6. */
+    uint8_t sl[4][6][64];
+    uint8_t sl_dc[2][6];
+} ScalingList;
+
+typedef struct HEVCSPS {
+    int vps_id;
+    int chroma_format_idc;
+    uint8_t separate_colour_plane_flag;
+
+    ///< output (i.e. cropped) values
+    int output_width, output_height;
+    HEVCWindow output_window;
+
+    HEVCWindow pic_conf_win;
+
+    int bit_depth;
+    int pixel_shift;
+    enum AVPixelFormat pix_fmt;
+
+    unsigned int log2_max_poc_lsb;
+    int pcm_enabled_flag;
+
+    int max_sub_layers;
+    struct {
+        int max_dec_pic_buffering;
+        int num_reorder_pics;
+        int max_latency_increase;
+    } temporal_layer[MAX_SUB_LAYERS];
+
+    VUI vui;
+    PTL ptl;
+
+    uint8_t scaling_list_enable_flag;
+    ScalingList scaling_list;
+
+    unsigned int nb_st_rps;
+    ShortTermRPS st_rps[MAX_SHORT_TERM_RPS_COUNT];
+
+    uint8_t amp_enabled_flag;
+    uint8_t sao_enabled;
+
+    uint8_t long_term_ref_pics_present_flag;
+    uint16_t lt_ref_pic_poc_lsb_sps[32];
+    uint8_t used_by_curr_pic_lt_sps_flag[32];
+    uint8_t num_long_term_ref_pics_sps;
+
+    struct {
+        uint8_t bit_depth;
+        uint8_t bit_depth_chroma;
+        unsigned int log2_min_pcm_cb_size;
+        unsigned int log2_max_pcm_cb_size;
+        uint8_t loop_filter_disable_flag;
+    } pcm;
+    uint8_t sps_temporal_mvp_enabled_flag;
+    uint8_t sps_strong_intra_smoothing_enable_flag;
+
+    unsigned int log2_min_cb_size;
+    unsigned int log2_diff_max_min_coding_block_size;
+    unsigned int log2_min_tb_size;
+    unsigned int log2_max_trafo_size;
+    unsigned int log2_ctb_size;
+    unsigned int log2_min_pu_size;
+
+    int max_transform_hierarchy_depth_inter;
+    int max_transform_hierarchy_depth_intra;
+
+    ///< coded frame dimension in various units
+    int width;
+    int height;
+    int ctb_width;
+    int ctb_height;
+    int ctb_size;
+    int min_cb_width;
+    int min_cb_height;
+    int min_tb_width;
+    int min_tb_height;
+    int min_pu_width;
+    int min_pu_height;
+
+    int hshift[3];
+    int vshift[3];
+
+    int qp_bd_offset;
+} HEVCSPS;
+
+typedef struct HEVCPPS {
+    unsigned int sps_id; ///< seq_parameter_set_id
+
+    uint8_t sign_data_hiding_flag;
+
+    uint8_t cabac_init_present_flag;
+
+    int num_ref_idx_l0_default_active; ///< num_ref_idx_l0_default_active_minus1 + 1
+    int num_ref_idx_l1_default_active; ///< num_ref_idx_l1_default_active_minus1 + 1
+    int pic_init_qp_minus26;
+
+    uint8_t constrained_intra_pred_flag;
+    uint8_t transform_skip_enabled_flag;
+
+    uint8_t cu_qp_delta_enabled_flag;
+    int diff_cu_qp_delta_depth;
+
+    int cb_qp_offset;
+    int cr_qp_offset;
+    uint8_t pic_slice_level_chroma_qp_offsets_present_flag;
+    uint8_t weighted_pred_flag;
+    uint8_t weighted_bipred_flag;
+    uint8_t output_flag_present_flag;
+    uint8_t transquant_bypass_enable_flag;
+
+    uint8_t dependent_slice_segments_enabled_flag;
+    uint8_t tiles_enabled_flag;
+    uint8_t entropy_coding_sync_enabled_flag;
+
+    int num_tile_columns;   ///< num_tile_columns_minus1 + 1
+    int num_tile_rows;      ///< num_tile_rows_minus1 + 1
+    uint8_t uniform_spacing_flag;
+    uint8_t loop_filter_across_tiles_enabled_flag;
+
+    uint8_t seq_loop_filter_across_slices_enabled_flag;
+
+    uint8_t deblocking_filter_control_present_flag;
+    uint8_t deblocking_filter_override_enabled_flag;
+    uint8_t disable_dbf;
+    int beta_offset;    ///< beta_offset_div2 * 2
+    int tc_offset;      ///< tc_offset_div2 * 2
+
+    uint8_t scaling_list_data_present_flag;
+    ScalingList scaling_list;
+
+    uint8_t lists_modification_present_flag;
+    int log2_parallel_merge_level; ///< log2_parallel_merge_level_minus2 + 2
+    int num_extra_slice_header_bits;
+    uint8_t slice_header_extension_present_flag;
+
+    // Inferred parameters
+    unsigned int *column_width;  ///< ColumnWidth
+    unsigned int *row_height;    ///< RowHeight
+    unsigned int *col_bd;        ///< ColBd
+    unsigned int *row_bd;        ///< RowBd
+    int *col_idxX;
+
+    int *ctb_addr_rs_to_ts; ///< CtbAddrRSToTS
+    int *ctb_addr_ts_to_rs; ///< CtbAddrTSToRS
+    int *tile_id;           ///< TileId
+    int *tile_pos_rs;       ///< TilePosRS
+    int *min_tb_addr_zs;    ///< MinTbAddrZS
+} HEVCPPS;
+
+typedef struct HEVCParamSets {
+    AVBufferRef *vps_list[MAX_VPS_COUNT];
+    AVBufferRef *sps_list[MAX_SPS_COUNT];
+    AVBufferRef *pps_list[MAX_PPS_COUNT];
+
+    /* currently active parameter sets */
+    const HEVCVPS *vps;
+    const HEVCSPS *sps;
+    const HEVCPPS *pps;
+} HEVCParamSets;
+
+typedef struct SliceHeader {
+    unsigned int pps_id;
+
+    ///< address (in raster order) of the first block in the current slice segment
+    unsigned int   slice_segment_addr;
+    ///< address (in raster order) of the first block in the current slice
+    unsigned int   slice_addr;
+
+    enum SliceType slice_type;
+
+    int pic_order_cnt_lsb;
+
+    uint8_t first_slice_in_pic_flag;
+    uint8_t dependent_slice_segment_flag;
+    uint8_t pic_output_flag;
+    uint8_t colour_plane_id;
+
+    ///< RPS coded in the slice header itself is stored here
+    int short_term_ref_pic_set_sps_flag;
+    int short_term_ref_pic_set_size;
+    ShortTermRPS slice_rps;
+    const ShortTermRPS *short_term_rps;
+    int long_term_ref_pic_set_size;
+    LongTermRPS long_term_rps;
+    unsigned int list_entry_lx[2][32];
+
+    uint8_t rpl_modification_flag[2];
+    uint8_t no_output_of_prior_pics_flag;
+    uint8_t slice_temporal_mvp_enabled_flag;
+
+    unsigned int nb_refs[2];
+
+    uint8_t slice_sample_adaptive_offset_flag[3];
+    uint8_t mvd_l1_zero_flag;
+
+    uint8_t cabac_init_flag;
+    uint8_t disable_deblocking_filter_flag; ///< slice_header_disable_deblocking_filter_flag
+    uint8_t slice_loop_filter_across_slices_enabled_flag;
+    uint8_t collocated_list;
+
+    unsigned int collocated_ref_idx;
+
+    int slice_qp_delta;
+    int slice_cb_qp_offset;
+    int slice_cr_qp_offset;
+
+    int beta_offset;    ///< beta_offset_div2 * 2
+    int tc_offset;      ///< tc_offset_div2 * 2
+
+    unsigned int max_num_merge_cand; ///< 5 - 5_minus_max_num_merge_cand
+
+    int num_entry_point_offsets;
+
+    int8_t slice_qp;
+
+    uint8_t luma_log2_weight_denom;
+    int16_t chroma_log2_weight_denom;
+
+    int16_t luma_weight_l0[16];
+    int16_t chroma_weight_l0[16][2];
+    int16_t chroma_weight_l1[16][2];
+    int16_t luma_weight_l1[16];
+
+    int16_t luma_offset_l0[16];
+    int16_t chroma_offset_l0[16][2];
+
+    int16_t luma_offset_l1[16];
+    int16_t chroma_offset_l1[16][2];
+
+    int slice_ctb_addr_rs;
+} SliceHeader;
+
+typedef struct CodingTree {
+    int depth; ///< ctDepth
+} CodingTree;
+
+typedef struct CodingUnit {
+    int x;
+    int y;
+
+    enum PredMode pred_mode;    ///< PredMode
+    enum PartMode part_mode;    ///< PartMode
+
+    // Inferred parameters
+    uint8_t intra_split_flag;   ///< IntraSplitFlag
+    uint8_t max_trafo_depth;    ///< MaxTrafoDepth
+    uint8_t cu_transquant_bypass_flag;
+} CodingUnit;
+
+typedef struct Mv {
+    int16_t x;  ///< horizontal component of motion vector
+    int16_t y;  ///< vertical component of motion vector
+} Mv;
+
+typedef struct MvField {
+    DECLARE_ALIGNED(4, Mv, mv)[2];
+    int8_t ref_idx[2];
+    int8_t pred_flag[2];
+    uint8_t is_intra;
+} MvField;
+
+typedef struct NeighbourAvailable {
+    int cand_bottom_left;
+    int cand_left;
+    int cand_up;
+    int cand_up_left;
+    int cand_up_right;
+    int cand_up_right_sap;
+} NeighbourAvailable;
+
+typedef struct PredictionUnit {
+    int mpm_idx;
+    int rem_intra_luma_pred_mode;
+    uint8_t intra_pred_mode[4];
+    Mv mvd;
+    uint8_t merge_flag;
+    uint8_t intra_pred_mode_c;
+} PredictionUnit;
+
+typedef struct TransformUnit {
+    int cu_qp_delta;
+
+    // Inferred parameters;
+    int cur_intra_pred_mode;
+    uint8_t is_cu_qp_delta_coded;
+} TransformUnit;
+
+typedef struct DBParams {
+    int beta_offset;
+    int tc_offset;
+} DBParams;
+
+#define HEVC_FRAME_FLAG_OUTPUT    (1 << 0)
+#define HEVC_FRAME_FLAG_SHORT_REF (1 << 1)
+#define HEVC_FRAME_FLAG_LONG_REF  (1 << 2)
+
+typedef struct HEVCFrame {
+    AVFrame *frame;
+    ThreadFrame tf;
+    MvField *tab_mvf;
+    RefPicList *refPicList;
+    RefPicListTab **rpl_tab;
+    int ctb_count;
+    int poc;
+    struct HEVCFrame *collocated_ref;
+
+    HEVCWindow window;
+
+    AVBufferRef *tab_mvf_buf;
+    AVBufferRef *rpl_tab_buf;
+    AVBufferRef *rpl_buf;
+
+    AVBufferRef *hwaccel_priv_buf;
+    void *hwaccel_picture_private;
+
+    /**
+     * A sequence counter, so that old frames are output first
+     * after a POC reset
+     */
+    uint16_t sequence;
+
+    /**
+     * A combination of HEVC_FRAME_FLAG_*
+     */
+    uint8_t flags;
+} HEVCFrame;
+
+struct HEVCContext;
+
+typedef struct HEVCPredContext {
+    void (*intra_pred[4])(struct HEVCContext *s, int x0, int y0, int c_idx);
+
+    void (*pred_planar[4])(uint8_t *src, const uint8_t *top,
+                           const uint8_t *left, ptrdiff_t stride);
+    void (*pred_dc)(uint8_t *src, const uint8_t *top, const uint8_t *left,
+                    ptrdiff_t stride, int log2_size, int c_idx);
+    void (*pred_angular[4])(uint8_t *src, const uint8_t *top,
+                            const uint8_t *left, ptrdiff_t stride,
+                            int c_idx, int mode);
+} HEVCPredContext;
+
+typedef struct HEVCLocalContext {
+    DECLARE_ALIGNED(16, int16_t, mc_buffer[(MAX_PB_SIZE + 24) * MAX_PB_SIZE]);
+    uint8_t cabac_state[HEVC_CONTEXTS];
+
+    uint8_t first_qp_group;
+
+    GetBitContext gb;
+    CABACContext cc;
+
+    int8_t qp_y;
+    int8_t curr_qp_y;
+
+    TransformUnit tu;
+
+    uint8_t ctb_left_flag;
+    uint8_t ctb_up_flag;
+    uint8_t ctb_up_right_flag;
+    uint8_t ctb_up_left_flag;
+    int     start_of_tiles_x;
+    int     end_of_tiles_x;
+    int     end_of_tiles_y;
+    /* +7 is for subpixel interpolation, *2 for high bit depths */
+    DECLARE_ALIGNED(32, uint8_t, edge_emu_buffer)[(MAX_PB_SIZE + 7) * EDGE_EMU_BUFFER_STRIDE * 2];
+    CodingTree ct;
+    CodingUnit cu;
+    PredictionUnit pu;
+    NeighbourAvailable na;
+
+#define BOUNDARY_LEFT_SLICE     (1 << 0)
+#define BOUNDARY_LEFT_TILE      (1 << 1)
+#define BOUNDARY_UPPER_SLICE    (1 << 2)
+#define BOUNDARY_UPPER_TILE     (1 << 3)
+    /* properties of the boundary of the current CTB for the purposes
+     * of the deblocking filter */
+    int boundary_flags;
+} HEVCLocalContext;
+
+typedef struct HEVCContext {
+    const AVClass *c;  // needed by private avoptions
+    AVCodecContext *avctx;
+
+    HEVCLocalContext HEVClc;
+
+    uint8_t cabac_state[HEVC_CONTEXTS];
+
+    /** 1 if the independent slice segment header was successfully parsed */
+    uint8_t slice_initialized;
+
+    AVFrame *frame;
+    AVFrame *sao_frame;
+    AVFrame *tmp_frame;
+    AVFrame *output_frame;
+
+    HEVCParamSets ps;
+
+    AVBufferPool *tab_mvf_pool;
+    AVBufferPool *rpl_tab_pool;
+
+    ///< candidate references for the current frame
+    RefPicList rps[5];
+
+    SliceHeader sh;
+    SAOParams *sao;
+    DBParams *deblock;
+    enum NALUnitType nal_unit_type;
+    int temporal_id;  ///< temporal_id_plus1 - 1
+    HEVCFrame *ref;
+    HEVCFrame DPB[32];
+    int poc;
+    int pocTid0;
+    int slice_idx; ///< number of the slice being currently decoded
+    int eos;       ///< current packet contains an EOS/EOB NAL
+    int max_ra;
+    int bs_width;
+    int bs_height;
+
+    int is_decoded;
+
+    HEVCPredContext hpc;
+    HEVCDSPContext hevcdsp;
+    VideoDSPContext vdsp;
+    BswapDSPContext bdsp;
+    int8_t *qp_y_tab;
+    uint8_t *horizontal_bs;
+    uint8_t *vertical_bs;
+
+    int32_t *tab_slice_address;
+
+    //  CU
+    uint8_t *skip_flag;
+    uint8_t *tab_ct_depth;
+    // PU
+    uint8_t *tab_ipm;
+
+    uint8_t *cbf_luma; // cbf_luma of colocated TU
+    uint8_t *is_pcm;
+
+    // CTB-level flags affecting loop filter operation
+    uint8_t *filter_slice_edges;
+
+    /** used on BE to byteswap the lines for checksumming */
+    uint8_t *checksum_buf;
+    int      checksum_buf_size;
+
+    /**
+     * Sequence counters for decoded and output frames, so that old
+     * frames are output first after a POC reset
+     */
+    uint16_t seq_decode;
+    uint16_t seq_output;
+
+    H2645Packet pkt;
+    // type of the first VCL NAL of the current frame
+    enum NALUnitType first_nal_type;
+
+    // for checking the frame checksums
+    struct AVMD5 *md5_ctx;
+    uint8_t       md5[3][16];
+    uint8_t is_md5;
+
+    uint8_t context_initialized;
+    uint8_t is_nalff;       ///< this flag is != 0 if bitstream is encapsulated
+                            ///< as a format defined in 14496-15
+    int apply_defdispwin;
+
+    int nal_length_size;    ///< Number of bytes used for nal length (1, 2 or 4)
+    int nuh_layer_id;
+
+    /** frame packing arrangement variables */
+    int sei_frame_packing_present;
+    int frame_packing_arrangement_type;
+    int content_interpretation_type;
+    int quincunx_subsampling;
+
+    /** display orientation */
+    int sei_display_orientation_present;
+    int sei_anticlockwise_rotation;
+    int sei_hflip, sei_vflip;
+} HEVCContext;
+
+int ff_hevc_decode_short_term_rps(GetBitContext *gb, AVCodecContext *avctx,
+                                  ShortTermRPS *rps, const HEVCSPS *sps, int is_slice_header);
+
+/**
+ * Parse the SPS from the bitstream into the provided HEVCSPS struct.
+ *
+ * @param sps_id the SPS id will be written here
+ * @param apply_defdispwin if set 1, the default display window from the VUI
+ *                         will be applied to the video dimensions
+ * @param vps_list if non-NULL, this function will validate that the SPS refers
+ *                 to an existing VPS
+ */
+int ff_hevc_parse_sps(HEVCSPS *sps, GetBitContext *gb, unsigned int *sps_id,
+                      int apply_defdispwin, AVBufferRef **vps_list, AVCodecContext *avctx);
+
+int ff_hevc_decode_nal_vps(GetBitContext *gb, AVCodecContext *avctx,
+                           HEVCParamSets *ps);
+int ff_hevc_decode_nal_sps(GetBitContext *gb, AVCodecContext *avctx,
+                           HEVCParamSets *ps, int apply_defdispwin);
+int ff_hevc_decode_nal_pps(GetBitContext *gb, AVCodecContext *avctx,
+                           HEVCParamSets *ps);
+int ff_hevc_decode_nal_sei(HEVCContext *s);
+
+/**
+ * Mark all frames in DPB as unused for reference.
+ */
+void ff_hevc_clear_refs(HEVCContext *s);
+
+/**
+ * Drop all frames currently in DPB.
+ */
+void ff_hevc_flush_dpb(HEVCContext *s);
+
+/**
+ * Compute POC of the current frame and return it.
+ */
+int ff_hevc_compute_poc(HEVCContext *s, int poc_lsb);
+
+RefPicList *ff_hevc_get_ref_list(HEVCContext *s, HEVCFrame *frame,
+                                 int x0, int y0);
+
+/**
+ * Construct the reference picture sets for the current frame.
+ */
+int ff_hevc_frame_rps(HEVCContext *s);
+
+/**
+ * Construct the reference picture list(s) for the current slice.
+ */
+int ff_hevc_slice_rpl(HEVCContext *s);
+
+void ff_hevc_save_states(HEVCContext *s, int ctb_addr_ts);
+void ff_hevc_cabac_init(HEVCContext *s, int ctb_addr_ts);
+int ff_hevc_sao_merge_flag_decode(HEVCContext *s);
+int ff_hevc_sao_type_idx_decode(HEVCContext *s);
+int ff_hevc_sao_band_position_decode(HEVCContext *s);
+int ff_hevc_sao_offset_abs_decode(HEVCContext *s);
+int ff_hevc_sao_offset_sign_decode(HEVCContext *s);
+int ff_hevc_sao_eo_class_decode(HEVCContext *s);
+int ff_hevc_end_of_slice_flag_decode(HEVCContext *s);
+int ff_hevc_cu_transquant_bypass_flag_decode(HEVCContext *s);
+int ff_hevc_skip_flag_decode(HEVCContext *s, int x0, int y0,
+                             int x_cb, int y_cb);
+int ff_hevc_pred_mode_decode(HEVCContext *s);
+int ff_hevc_split_coding_unit_flag_decode(HEVCContext *s, int ct_depth,
+                                          int x0, int y0);
+int ff_hevc_part_mode_decode(HEVCContext *s, int log2_cb_size);
+int ff_hevc_pcm_flag_decode(HEVCContext *s);
+int ff_hevc_prev_intra_luma_pred_flag_decode(HEVCContext *s);
+int ff_hevc_mpm_idx_decode(HEVCContext *s);
+int ff_hevc_rem_intra_luma_pred_mode_decode(HEVCContext *s);
+int ff_hevc_intra_chroma_pred_mode_decode(HEVCContext *s);
+int ff_hevc_merge_idx_decode(HEVCContext *s);
+int ff_hevc_merge_flag_decode(HEVCContext *s);
+int ff_hevc_inter_pred_idc_decode(HEVCContext *s, int nPbW, int nPbH);
+int ff_hevc_ref_idx_lx_decode(HEVCContext *s, int num_ref_idx_lx);
+int ff_hevc_mvp_lx_flag_decode(HEVCContext *s);
+int ff_hevc_no_residual_syntax_flag_decode(HEVCContext *s);
+int ff_hevc_abs_mvd_greater0_flag_decode(HEVCContext *s);
+int ff_hevc_abs_mvd_greater1_flag_decode(HEVCContext *s);
+int ff_hevc_mvd_decode(HEVCContext *s);
+int ff_hevc_mvd_sign_flag_decode(HEVCContext *s);
+int ff_hevc_split_transform_flag_decode(HEVCContext *s, int log2_trafo_size);
+int ff_hevc_cbf_cb_cr_decode(HEVCContext *s, int trafo_depth);
+int ff_hevc_cbf_luma_decode(HEVCContext *s, int trafo_depth);
+int ff_hevc_transform_skip_flag_decode(HEVCContext *s, int c_idx);
+int ff_hevc_last_significant_coeff_x_prefix_decode(HEVCContext *s, int c_idx,
+                                                   int log2_size);
+int ff_hevc_last_significant_coeff_y_prefix_decode(HEVCContext *s, int c_idx,
+                                                   int log2_size);
+int ff_hevc_last_significant_coeff_suffix_decode(HEVCContext *s,
+                                                 int last_significant_coeff_prefix);
+int ff_hevc_significant_coeff_group_flag_decode(HEVCContext *s, int c_idx,
+                                                int ctx_cg);
+int ff_hevc_significant_coeff_flag_decode(HEVCContext *s, int c_idx, int x_c,
+                                          int y_c, int log2_trafo_size,
+                                          int scan_idx, int prev_sig);
+int ff_hevc_coeff_abs_level_greater1_flag_decode(HEVCContext *s, int c_idx,
+                                                 int ctx_set);
+int ff_hevc_coeff_abs_level_greater2_flag_decode(HEVCContext *s, int c_idx,
+                                                 int inc);
+int ff_hevc_coeff_abs_level_remaining(HEVCContext *s, int base_level,
+                                      int rc_rice_param);
+int ff_hevc_coeff_sign_flag(HEVCContext *s, uint8_t nb);
+
+/**
+ * Get the number of candidate references for the current frame.
+ */
+int ff_hevc_frame_nb_refs(HEVCContext *s);
+
+int ff_hevc_set_new_ref(HEVCContext *s, AVFrame **frame, int poc);
+
+/**
+ * Find next frame in output order and put a reference to it in frame.
+ * @return 1 if a frame was output, 0 otherwise
+ */
+int ff_hevc_output_frame(HEVCContext *s, AVFrame *frame, int flush);
+
+void ff_hevc_unref_frame(HEVCContext *s, HEVCFrame *frame, int flags);
+
+void ff_hevc_set_neighbour_available(HEVCContext *s, int x0, int y0,
+                                     int nPbW, int nPbH);
+void ff_hevc_luma_mv_merge_mode(HEVCContext *s, int x0, int y0,
+                                int nPbW, int nPbH, int log2_cb_size,
+                                int part_idx, int merge_idx, MvField *mv);
+void ff_hevc_luma_mv_mvp_mode(HEVCContext *s, int x0, int y0,
+                              int nPbW, int nPbH, int log2_cb_size,
+                              int part_idx, int merge_idx,
+                              MvField *mv, int mvp_lx_flag, int LX);
+void ff_hevc_set_qPy(HEVCContext *s, int xC, int yC, int xBase, int yBase,
+                     int log2_cb_size);
+void ff_hevc_deblocking_boundary_strengths(HEVCContext *s, int x0, int y0,
+                                           int log2_trafo_size);
+int ff_hevc_cu_qp_delta_sign_flag(HEVCContext *s);
+int ff_hevc_cu_qp_delta_abs(HEVCContext *s);
+void ff_hevc_hls_filter(HEVCContext *s, int x, int y);
+void ff_hevc_hls_filters(HEVCContext *s, int x_ctb, int y_ctb, int ctb_size);
+
+void ff_hevc_pps_free(HEVCPPS **ppps);
+
+void ff_hevc_pred_init(HEVCPredContext *hpc, int bit_depth);
+
+int ff_hevc_encode_nal_vps(HEVCVPS *vps, unsigned int id,
+                           uint8_t *buf, int buf_size);
+
+extern const uint8_t ff_hevc_qpel_extra_before[4];
+extern const uint8_t ff_hevc_qpel_extra_after[4];
+extern const uint8_t ff_hevc_qpel_extra[4];
+
+extern const uint8_t ff_hevc_diag_scan4x4_x[16];
+extern const uint8_t ff_hevc_diag_scan4x4_y[16];
+extern const uint8_t ff_hevc_diag_scan8x8_x[64];
+extern const uint8_t ff_hevc_diag_scan8x8_y[64];
+
+#endif /* AVCODEC_HEVCDEC_H */
index cd55571..97ce34a 100644 (file)
@@ -21,7 +21,7 @@
  */
 
 #include "get_bits.h"
-#include "hevc.h"
+#include "hevcdec.h"
 
 #include "bit_depth_template.c"
 
index 1ba2487..7342b7e 100644 (file)
@@ -20,7 +20,7 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
-#include "hevc.h"
+#include "hevcdec.h"
 
 #define BIT_DEPTH 8
 #include "hevcpred_template.c"
index 039882b..5fe3ea3 100644 (file)
@@ -22,7 +22,7 @@
 
 #include "libavutil/pixdesc.h"
 
-#include "hevc.h"
+#include "hevcdec.h"
 
 #include "bit_depth_template.c"
 
index ddb2a42..24af82c 100644 (file)
@@ -30,7 +30,7 @@
 #include "avcodec.h"
 #include "bytestream.h"
 #include "get_bits.h"
-#include "hevc.h"
+#include "hevcdec.h"
 #include "h2645_parse.h"
 #include "internal.h"
 #include "qsv.h"
index 8715d30..4853a5b 100644 (file)
@@ -25,7 +25,7 @@
 #include "libavutil/pixfmt.h"
 
 #include "avcodec.h"
-#include "hevc.h"
+#include "hevcdec.h"
 #include "internal.h"
 #include "put_bits.h"
 #include "vaapi_encode.h"
index 1e5fb71..9f2baa7 100644 (file)
@@ -24,7 +24,7 @@
 
 #include "avcodec.h"
 #include "internal.h"
-#include "hevc.h"
+#include "hevcdec.h"
 #include "vdpau.h"
 #include "vdpau_internal.h"
 
index c835f22..b3a3603 100644 (file)
@@ -20,7 +20,7 @@
 
 #include "libavcodec/get_bits.h"
 #include "libavcodec/golomb.h"
-#include "libavcodec/hevc.h"
+#include "libavcodec/hevcdec.h"
 #include "libavutil/intreadwrite.h"
 #include "avc.h"
 #include "avio.h"
index 65a3cdf..75b2cd3 100644 (file)
@@ -19,7 +19,7 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
-#include "libavcodec/hevc.h"
+#include "libavcodec/hevcdec.h"
 
 #include "avformat.h"
 #include "rawdec.h"