fate: add more tests for hue video filter
[ffmpeg.git] / libavcodec / nvdec_h264.c
1 /*
2  * MPEG-4 Part 10 / AVC / H.264 HW decode acceleration through NVDEC
3  *
4  * Copyright (c) 2016 Anton Khirnov
5  *
6  * This file is part of FFmpeg.
7  *
8  * FFmpeg is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU Lesser General Public
10  * License as published by the Free Software Foundation; either
11  * version 2.1 of the License, or (at your option) any later version.
12  *
13  * FFmpeg is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
16  * Lesser General Public License for more details.
17  *
18  * You should have received a copy of the GNU Lesser General Public
19  * License along with FFmpeg; if not, write to the Free Software
20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21  */
22
23 #include <stdint.h>
24 #include <string.h>
25
26 #include "avcodec.h"
27 #include "nvdec.h"
28 #include "decode.h"
29 #include "internal.h"
30 #include "h264dec.h"
31
32 static void dpb_add(const H264Context *h, CUVIDH264DPBENTRY *dst, const H264Picture *src,
33                     int frame_idx)
34 {
35     FrameDecodeData *fdd = (FrameDecodeData*)src->f->private_ref->data;
36     const NVDECFrame *cf = fdd->hwaccel_priv;
37
38     dst->PicIdx             = cf ? cf->idx : -1;
39     dst->FrameIdx           = frame_idx;
40     dst->is_long_term       = src->long_ref;
41     dst->not_existing       = 0;
42     dst->used_for_reference = src->reference & 3;
43     dst->FieldOrderCnt[0]   = src->field_poc[0];
44     dst->FieldOrderCnt[1]   = src->field_poc[1];
45 }
46
47 static int nvdec_h264_start_frame(AVCodecContext *avctx,
48                                   const uint8_t *buffer, uint32_t size)
49 {
50     const H264Context *h = avctx->priv_data;
51     const PPS *pps = h->ps.pps;
52     const SPS *sps = h->ps.sps;
53
54     NVDECContext       *ctx = avctx->internal->hwaccel_priv_data;
55     CUVIDPICPARAMS      *pp = &ctx->pic_params;
56     CUVIDH264PICPARAMS *ppc = &pp->CodecSpecific.h264;
57     FrameDecodeData *fdd;
58     NVDECFrame *cf;
59
60     int i, dpb_size, ret;
61
62     ret = ff_nvdec_start_frame(avctx, h->cur_pic_ptr->f);
63     if (ret < 0)
64         return ret;
65
66     fdd = (FrameDecodeData*)h->cur_pic_ptr->f->private_ref->data;
67     cf  = (NVDECFrame*)fdd->hwaccel_priv;
68
69     *pp = (CUVIDPICPARAMS) {
70         .PicWidthInMbs     = h->mb_width,
71         .FrameHeightInMbs  = h->mb_height,
72         .CurrPicIdx        = cf->idx,
73         .field_pic_flag    = FIELD_PICTURE(h),
74         .bottom_field_flag = h->picture_structure == PICT_BOTTOM_FIELD,
75         .second_field      = FIELD_PICTURE(h) && !h->first_field,
76         .ref_pic_flag      = h->nal_ref_idc != 0,
77         .intra_pic_flag    = 1,
78
79         .CodecSpecific.h264 = {
80             .log2_max_frame_num_minus4            = sps->log2_max_frame_num - 4,
81             .pic_order_cnt_type                   = sps->poc_type,
82             .log2_max_pic_order_cnt_lsb_minus4    = FFMAX(sps->log2_max_poc_lsb - 4, 0),
83             .delta_pic_order_always_zero_flag     = sps->delta_pic_order_always_zero_flag,
84             .frame_mbs_only_flag                  = sps->frame_mbs_only_flag,
85             .direct_8x8_inference_flag            = sps->direct_8x8_inference_flag,
86             .num_ref_frames                       = sps->ref_frame_count,
87             .residual_colour_transform_flag       = sps->residual_color_transform_flag,
88             .bit_depth_luma_minus8                = sps->bit_depth_luma - 8,
89             .bit_depth_chroma_minus8              = sps->bit_depth_chroma - 8,
90             .qpprime_y_zero_transform_bypass_flag = sps->transform_bypass,
91
92             .entropy_coding_mode_flag               = pps->cabac,
93             .pic_order_present_flag                 = pps->pic_order_present,
94             .num_ref_idx_l0_active_minus1           = pps->ref_count[0] - 1,
95             .num_ref_idx_l1_active_minus1           = pps->ref_count[1] - 1,
96             .weighted_pred_flag                     = pps->weighted_pred,
97             .weighted_bipred_idc                    = pps->weighted_bipred_idc,
98             .pic_init_qp_minus26                    = pps->init_qp - 26,
99             .deblocking_filter_control_present_flag = pps->deblocking_filter_parameters_present,
100             .redundant_pic_cnt_present_flag         = pps->redundant_pic_cnt_present,
101             .transform_8x8_mode_flag                = pps->transform_8x8_mode,
102             .MbaffFrameFlag                         = sps->mb_aff && !FIELD_PICTURE(h),
103             .constrained_intra_pred_flag            = pps->constrained_intra_pred,
104             .chroma_qp_index_offset                 = pps->chroma_qp_index_offset[0],
105             .second_chroma_qp_index_offset          = pps->chroma_qp_index_offset[1],
106             .ref_pic_flag                           = h->nal_ref_idc != 0,
107             .frame_num                              = h->poc.frame_num,
108             .CurrFieldOrderCnt[0]                   = h->cur_pic_ptr->field_poc[0],
109             .CurrFieldOrderCnt[1]                   = h->cur_pic_ptr->field_poc[1],
110         },
111     };
112
113     memcpy(ppc->WeightScale4x4,    pps->scaling_matrix4,    sizeof(ppc->WeightScale4x4));
114     memcpy(ppc->WeightScale8x8[0], pps->scaling_matrix8[0], sizeof(ppc->WeightScale8x8[0]));
115     memcpy(ppc->WeightScale8x8[1], pps->scaling_matrix8[3], sizeof(ppc->WeightScale8x8[0]));
116
117     dpb_size = 0;
118     for (i = 0; i < h->short_ref_count; i++)
119         dpb_add(h, &ppc->dpb[dpb_size++], h->short_ref[i], h->short_ref[i]->frame_num);
120     for (i = 0; i < 16; i++) {
121         if (h->long_ref[i])
122             dpb_add(h, &ppc->dpb[dpb_size++], h->long_ref[i], i);
123     }
124
125     for (i = dpb_size; i < FF_ARRAY_ELEMS(ppc->dpb); i++)
126         ppc->dpb[i].PicIdx = -1;
127
128     return 0;
129 }
130
131 static int nvdec_h264_decode_slice(AVCodecContext *avctx, const uint8_t *buffer,
132                                    uint32_t size)
133 {
134     NVDECContext *ctx = avctx->internal->hwaccel_priv_data;
135     CUVIDPICPARAMS *pp = &ctx->pic_params;
136     const H264Context *h = avctx->priv_data;
137     const H264SliceContext *sl = &h->slice_ctx[0];
138     void *tmp;
139
140     tmp = av_fast_realloc(ctx->bitstream, &ctx->bitstream_allocated,
141                           ctx->bitstream_len + size + 3);
142     if (!tmp)
143         return AVERROR(ENOMEM);
144     ctx->bitstream = tmp;
145
146     tmp = av_fast_realloc(ctx->slice_offsets, &ctx->slice_offsets_allocated,
147                           (ctx->nb_slices + 1) * sizeof(*ctx->slice_offsets));
148     if (!tmp)
149         return AVERROR(ENOMEM);
150     ctx->slice_offsets = tmp;
151
152     AV_WB24(ctx->bitstream + ctx->bitstream_len, 1);
153     memcpy(ctx->bitstream + ctx->bitstream_len + 3, buffer, size);
154     ctx->slice_offsets[ctx->nb_slices] = ctx->bitstream_len ;
155     ctx->bitstream_len += size + 3;
156     ctx->nb_slices++;
157
158     if (sl->slice_type != AV_PICTURE_TYPE_I && sl->slice_type != AV_PICTURE_TYPE_SI)
159         pp->intra_pic_flag = 0;
160
161     return 0;
162 }
163
164 static int nvdec_h264_frame_params(AVCodecContext *avctx,
165                                    AVBufferRef *hw_frames_ctx)
166 {
167     const H264Context *h = avctx->priv_data;
168     const SPS       *sps = h->ps.sps;
169     return ff_nvdec_frame_params(avctx, hw_frames_ctx, sps->ref_frame_count + sps->num_reorder_frames);
170 }
171
172 const AVHWAccel ff_h264_nvdec_hwaccel = {
173     .name                 = "h264_nvdec",
174     .type                 = AVMEDIA_TYPE_VIDEO,
175     .id                   = AV_CODEC_ID_H264,
176     .pix_fmt              = AV_PIX_FMT_CUDA,
177     .start_frame          = nvdec_h264_start_frame,
178     .end_frame            = ff_nvdec_end_frame,
179     .decode_slice         = nvdec_h264_decode_slice,
180     .frame_params         = nvdec_h264_frame_params,
181     .init                 = ff_nvdec_decode_init,
182     .uninit               = ff_nvdec_decode_uninit,
183     .priv_data_size       = sizeof(NVDECContext),
184 };