lavf/segment: add deinit function
[ffmpeg.git] / libavcodec / dxva2_hevc.c
1 /*
2  * DXVA2 HEVC HW acceleration.
3  *
4  * copyright (c) 2014 - 2015 Hendrik Leppkes
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 "libavutil/avassert.h"
24
25 #include "hevc.h"
26
27 // The headers above may include w32threads.h, which uses the original
28 // _WIN32_WINNT define, while dxva2_internal.h redefines it to target a
29 // potentially newer version.
30 #include "dxva2_internal.h"
31
32 #define MAX_SLICES 256
33
34 struct hevc_dxva2_picture_context {
35     DXVA_PicParams_HEVC   pp;
36     DXVA_Qmatrix_HEVC     qm;
37     unsigned              slice_count;
38     DXVA_Slice_HEVC_Short slice_short[MAX_SLICES];
39     const uint8_t         *bitstream;
40     unsigned              bitstream_size;
41 };
42
43 static void fill_picture_entry(DXVA_PicEntry_HEVC *pic,
44                                unsigned index, unsigned flag)
45 {
46     av_assert0((index & 0x7f) == index && (flag & 0x01) == flag);
47     pic->bPicEntry = index | (flag << 7);
48 }
49
50 static int get_refpic_index(const DXVA_PicParams_HEVC *pp, int surface_index)
51 {
52     int i;
53     for (i = 0; i < FF_ARRAY_ELEMS(pp->RefPicList); i++) {
54         if ((pp->RefPicList[i].bPicEntry & 0x7f) == surface_index)
55           return i;
56     }
57     return 0xff;
58 }
59
60 static void fill_picture_parameters(const AVCodecContext *avctx, AVDXVAContext *ctx, const HEVCContext *h,
61                                     DXVA_PicParams_HEVC *pp)
62 {
63     const HEVCFrame *current_picture = h->ref;
64     const HEVCSPS *sps = h->ps.sps;
65     const HEVCPPS *pps = h->ps.pps;
66     int i, j;
67
68     memset(pp, 0, sizeof(*pp));
69
70     pp->PicWidthInMinCbsY  = sps->min_cb_width;
71     pp->PicHeightInMinCbsY = sps->min_cb_height;
72
73     pp->wFormatAndSequenceInfoFlags = (sps->chroma_format_idc             <<  0) |
74                                       (sps->separate_colour_plane_flag    <<  2) |
75                                       ((sps->bit_depth - 8)               <<  3) |
76                                       ((sps->bit_depth - 8)               <<  6) |
77                                       ((sps->log2_max_poc_lsb - 4)        <<  9) |
78                                       (0                                  << 13) |
79                                       (0                                  << 14) |
80                                       (0                                  << 15);
81
82     fill_picture_entry(&pp->CurrPic, ff_dxva2_get_surface_index(avctx, ctx, current_picture->frame), 0);
83
84     pp->sps_max_dec_pic_buffering_minus1         = sps->temporal_layer[sps->max_sub_layers - 1].max_dec_pic_buffering - 1;
85     pp->log2_min_luma_coding_block_size_minus3   = sps->log2_min_cb_size - 3;
86     pp->log2_diff_max_min_luma_coding_block_size = sps->log2_diff_max_min_coding_block_size;
87     pp->log2_min_transform_block_size_minus2     = sps->log2_min_tb_size - 2;
88     pp->log2_diff_max_min_transform_block_size   = sps->log2_max_trafo_size  - sps->log2_min_tb_size;
89     pp->max_transform_hierarchy_depth_inter      = sps->max_transform_hierarchy_depth_inter;
90     pp->max_transform_hierarchy_depth_intra      = sps->max_transform_hierarchy_depth_intra;
91     pp->num_short_term_ref_pic_sets              = sps->nb_st_rps;
92     pp->num_long_term_ref_pics_sps               = sps->num_long_term_ref_pics_sps;
93
94     pp->num_ref_idx_l0_default_active_minus1     = pps->num_ref_idx_l0_default_active - 1;
95     pp->num_ref_idx_l1_default_active_minus1     = pps->num_ref_idx_l1_default_active - 1;
96     pp->init_qp_minus26                          = pps->pic_init_qp_minus26;
97
98     if (h->sh.short_term_ref_pic_set_sps_flag == 0 && h->sh.short_term_rps) {
99         pp->ucNumDeltaPocsOfRefRpsIdx            = h->sh.short_term_rps->rps_idx_num_delta_pocs;
100         pp->wNumBitsForShortTermRPSInSlice       = h->sh.short_term_ref_pic_set_size;
101     }
102
103     pp->dwCodingParamToolFlags = (sps->scaling_list_enable_flag                  <<  0) |
104                                  (sps->amp_enabled_flag                          <<  1) |
105                                  (sps->sao_enabled                               <<  2) |
106                                  (sps->pcm_enabled_flag                          <<  3) |
107                                  ((sps->pcm_enabled_flag ? (sps->pcm.bit_depth - 1) : 0)            <<  4) |
108                                  ((sps->pcm_enabled_flag ? (sps->pcm.bit_depth_chroma - 1) : 0)     <<  8) |
109                                  ((sps->pcm_enabled_flag ? (sps->pcm.log2_min_pcm_cb_size - 3) : 0) << 12) |
110                                  ((sps->pcm_enabled_flag ? (sps->pcm.log2_max_pcm_cb_size - sps->pcm.log2_min_pcm_cb_size) : 0) << 14) |
111                                  (sps->pcm.loop_filter_disable_flag              << 16) |
112                                  (sps->long_term_ref_pics_present_flag           << 17) |
113                                  (sps->sps_temporal_mvp_enabled_flag             << 18) |
114                                  (sps->sps_strong_intra_smoothing_enable_flag    << 19) |
115                                  (pps->dependent_slice_segments_enabled_flag     << 20) |
116                                  (pps->output_flag_present_flag                  << 21) |
117                                  (pps->num_extra_slice_header_bits               << 22) |
118                                  (pps->sign_data_hiding_flag                     << 25) |
119                                  (pps->cabac_init_present_flag                   << 26) |
120                                  (0                                              << 27);
121
122     pp->dwCodingSettingPicturePropertyFlags = (pps->constrained_intra_pred_flag                   <<  0) |
123                                               (pps->transform_skip_enabled_flag                   <<  1) |
124                                               (pps->cu_qp_delta_enabled_flag                      <<  2) |
125                                               (pps->pic_slice_level_chroma_qp_offsets_present_flag <<  3) |
126                                               (pps->weighted_pred_flag                            <<  4) |
127                                               (pps->weighted_bipred_flag                          <<  5) |
128                                               (pps->transquant_bypass_enable_flag                 <<  6) |
129                                               (pps->tiles_enabled_flag                            <<  7) |
130                                               (pps->entropy_coding_sync_enabled_flag              <<  8) |
131                                               (pps->uniform_spacing_flag                          <<  9) |
132                                               ((pps->tiles_enabled_flag ? pps->loop_filter_across_tiles_enabled_flag : 0) << 10) |
133                                               (pps->seq_loop_filter_across_slices_enabled_flag    << 11) |
134                                               (pps->deblocking_filter_override_enabled_flag       << 12) |
135                                               (pps->disable_dbf                                   << 13) |
136                                               (pps->lists_modification_present_flag               << 14) |
137                                               (pps->slice_header_extension_present_flag           << 15) |
138                                               (IS_IRAP(h)                                         << 16) |
139                                               (IS_IDR(h)                                          << 17) |
140                                               /* IntraPicFlag */
141                                               (IS_IRAP(h)                                         << 18) |
142                                               (0                                                  << 19);
143     pp->pps_cb_qp_offset            = pps->cb_qp_offset;
144     pp->pps_cr_qp_offset            = pps->cr_qp_offset;
145     if (pps->tiles_enabled_flag) {
146         pp->num_tile_columns_minus1 = pps->num_tile_columns - 1;
147         pp->num_tile_rows_minus1    = pps->num_tile_rows - 1;
148
149         if (!pps->uniform_spacing_flag) {
150             for (i = 0; i < pps->num_tile_columns; i++)
151                 pp->column_width_minus1[i] = pps->column_width[i] - 1;
152
153             for (i = 0; i < pps->num_tile_rows; i++)
154                 pp->row_height_minus1[i] = pps->row_height[i] - 1;
155         }
156     }
157
158     pp->diff_cu_qp_delta_depth           = pps->diff_cu_qp_delta_depth;
159     pp->pps_beta_offset_div2             = pps->beta_offset / 2;
160     pp->pps_tc_offset_div2               = pps->tc_offset / 2;
161     pp->log2_parallel_merge_level_minus2 = pps->log2_parallel_merge_level - 2;
162     pp->CurrPicOrderCntVal               = h->poc;
163
164     // fill RefPicList from the DPB
165     for (i = 0, j = 0; i < FF_ARRAY_ELEMS(pp->RefPicList); i++) {
166         const HEVCFrame *frame = NULL;
167         while (!frame && j < FF_ARRAY_ELEMS(h->DPB)) {
168             if (&h->DPB[j] != current_picture && (h->DPB[j].flags & (HEVC_FRAME_FLAG_LONG_REF | HEVC_FRAME_FLAG_SHORT_REF)))
169                 frame = &h->DPB[j];
170             j++;
171         }
172
173         if (frame) {
174             fill_picture_entry(&pp->RefPicList[i], ff_dxva2_get_surface_index(avctx, ctx, frame->frame), !!(frame->flags & HEVC_FRAME_FLAG_LONG_REF));
175             pp->PicOrderCntValList[i] = frame->poc;
176         } else {
177             pp->RefPicList[i].bPicEntry = 0xff;
178             pp->PicOrderCntValList[i]   = 0;
179         }
180     }
181
182     #define DO_REF_LIST(ref_idx, ref_list) { \
183         const RefPicList *rpl = &h->rps[ref_idx]; \
184         for (i = 0, j = 0; i < FF_ARRAY_ELEMS(pp->ref_list); i++) { \
185             const HEVCFrame *frame = NULL; \
186             while (!frame && j < rpl->nb_refs) \
187                 frame = rpl->ref[j++]; \
188             if (frame) \
189                 pp->ref_list[i] = get_refpic_index(pp, ff_dxva2_get_surface_index(avctx, ctx, frame->frame)); \
190             else \
191                 pp->ref_list[i] = 0xff; \
192         } \
193     }
194
195     // Fill short term and long term lists
196     DO_REF_LIST(ST_CURR_BEF, RefPicSetStCurrBefore);
197     DO_REF_LIST(ST_CURR_AFT, RefPicSetStCurrAfter);
198     DO_REF_LIST(LT_CURR, RefPicSetLtCurr);
199
200     pp->StatusReportFeedbackNumber = 1 + DXVA_CONTEXT_REPORT_ID(avctx, ctx)++;
201 }
202
203 static void fill_scaling_lists(AVDXVAContext *ctx, const HEVCContext *h, DXVA_Qmatrix_HEVC *qm)
204 {
205     unsigned i, j, pos;
206     const ScalingList *sl = h->ps.pps->scaling_list_data_present_flag ?
207                             &h->ps.pps->scaling_list : &h->ps.sps->scaling_list;
208
209     memset(qm, 0, sizeof(*qm));
210     for (i = 0; i < 6; i++) {
211         for (j = 0; j < 16; j++) {
212             pos = 4 * ff_hevc_diag_scan4x4_y[j] + ff_hevc_diag_scan4x4_x[j];
213             qm->ucScalingLists0[i][j] = sl->sl[0][i][pos];
214         }
215
216         for (j = 0; j < 64; j++) {
217             pos = 8 * ff_hevc_diag_scan8x8_y[j] + ff_hevc_diag_scan8x8_x[j];
218             qm->ucScalingLists1[i][j] = sl->sl[1][i][pos];
219             qm->ucScalingLists2[i][j] = sl->sl[2][i][pos];
220
221             if (i < 2)
222                 qm->ucScalingLists3[i][j] = sl->sl[3][i * 3][pos];
223         }
224
225         qm->ucScalingListDCCoefSizeID2[i] = sl->sl_dc[0][i];
226         if (i < 2)
227             qm->ucScalingListDCCoefSizeID3[i] = sl->sl_dc[1][i * 3];
228     }
229 }
230
231 static void fill_slice_short(DXVA_Slice_HEVC_Short *slice,
232                              unsigned position, unsigned size)
233 {
234     memset(slice, 0, sizeof(*slice));
235     slice->BSNALunitDataLocation = position;
236     slice->SliceBytesInBuffer    = size;
237     slice->wBadSliceChopping     = 0;
238 }
239
240 static int commit_bitstream_and_slice_buffer(AVCodecContext *avctx,
241                                              DECODER_BUFFER_DESC *bs,
242                                              DECODER_BUFFER_DESC *sc)
243 {
244     const HEVCContext *h = avctx->priv_data;
245     AVDXVAContext *ctx = avctx->hwaccel_context;
246     const HEVCFrame *current_picture = h->ref;
247     struct hevc_dxva2_picture_context *ctx_pic = current_picture->hwaccel_picture_private;
248     DXVA_Slice_HEVC_Short *slice = NULL;
249     void     *dxva_data_ptr;
250     uint8_t  *dxva_data, *current, *end;
251     unsigned dxva_size;
252     void     *slice_data;
253     unsigned slice_size;
254     unsigned padding;
255     unsigned i;
256     unsigned type;
257
258     /* Create an annex B bitstream buffer with only slice NAL and finalize slice */
259 #if CONFIG_D3D11VA
260     if (avctx->pix_fmt == AV_PIX_FMT_D3D11VA_VLD) {
261         type = D3D11_VIDEO_DECODER_BUFFER_BITSTREAM;
262         if (FAILED(ID3D11VideoContext_GetDecoderBuffer(D3D11VA_CONTEXT(ctx)->video_context,
263                                                        D3D11VA_CONTEXT(ctx)->decoder,
264                                                        type,
265                                                        &dxva_size, &dxva_data_ptr)))
266             return -1;
267     }
268 #endif
269 #if CONFIG_DXVA2
270     if (avctx->pix_fmt == AV_PIX_FMT_DXVA2_VLD) {
271         type = DXVA2_BitStreamDateBufferType;
272         if (FAILED(IDirectXVideoDecoder_GetBuffer(DXVA2_CONTEXT(ctx)->decoder,
273                                                   type,
274                                                   &dxva_data_ptr, &dxva_size)))
275             return -1;
276     }
277 #endif
278
279     dxva_data = dxva_data_ptr;
280     current = dxva_data;
281     end = dxva_data + dxva_size;
282
283     for (i = 0; i < ctx_pic->slice_count; i++) {
284         static const uint8_t start_code[] = { 0, 0, 1 };
285         static const unsigned start_code_size = sizeof(start_code);
286         unsigned position, size;
287
288         slice = &ctx_pic->slice_short[i];
289
290         position = slice->BSNALunitDataLocation;
291         size     = slice->SliceBytesInBuffer;
292         if (start_code_size + size > end - current) {
293             av_log(avctx, AV_LOG_ERROR, "Failed to build bitstream");
294             break;
295         }
296
297         slice->BSNALunitDataLocation = current - dxva_data;
298         slice->SliceBytesInBuffer    = start_code_size + size;
299
300         memcpy(current, start_code, start_code_size);
301         current += start_code_size;
302
303         memcpy(current, &ctx_pic->bitstream[position], size);
304         current += size;
305     }
306     padding = FFMIN(128 - ((current - dxva_data) & 127), end - current);
307     if (slice && padding > 0) {
308         memset(current, 0, padding);
309         current += padding;
310
311         slice->SliceBytesInBuffer += padding;
312     }
313 #if CONFIG_D3D11VA
314     if (avctx->pix_fmt == AV_PIX_FMT_D3D11VA_VLD)
315         if (FAILED(ID3D11VideoContext_ReleaseDecoderBuffer(D3D11VA_CONTEXT(ctx)->video_context, D3D11VA_CONTEXT(ctx)->decoder, type)))
316             return -1;
317 #endif
318 #if CONFIG_DXVA2
319     if (avctx->pix_fmt == AV_PIX_FMT_DXVA2_VLD)
320         if (FAILED(IDirectXVideoDecoder_ReleaseBuffer(DXVA2_CONTEXT(ctx)->decoder, type)))
321             return -1;
322 #endif
323     if (i < ctx_pic->slice_count)
324         return -1;
325
326 #if CONFIG_D3D11VA
327     if (avctx->pix_fmt == AV_PIX_FMT_D3D11VA_VLD) {
328         D3D11_VIDEO_DECODER_BUFFER_DESC *dsc11 = bs;
329         memset(dsc11, 0, sizeof(*dsc11));
330         dsc11->BufferType           = type;
331         dsc11->DataSize             = current - dxva_data;
332         dsc11->NumMBsInBuffer       = 0;
333
334         type = D3D11_VIDEO_DECODER_BUFFER_SLICE_CONTROL;
335     }
336 #endif
337 #if CONFIG_DXVA2
338     if (avctx->pix_fmt == AV_PIX_FMT_DXVA2_VLD) {
339         DXVA2_DecodeBufferDesc *dsc2 = bs;
340         memset(dsc2, 0, sizeof(*dsc2));
341         dsc2->CompressedBufferType = type;
342         dsc2->DataSize             = current - dxva_data;
343         dsc2->NumMBsInBuffer       = 0;
344
345         type = DXVA2_SliceControlBufferType;
346     }
347 #endif
348
349     slice_data = ctx_pic->slice_short;
350     slice_size = ctx_pic->slice_count * sizeof(*ctx_pic->slice_short);
351
352     av_assert0(((current - dxva_data) & 127) == 0);
353     return ff_dxva2_commit_buffer(avctx, ctx, sc,
354                                   type,
355                                   slice_data, slice_size, 0);
356 }
357
358
359 static int dxva2_hevc_start_frame(AVCodecContext *avctx,
360                                   av_unused const uint8_t *buffer,
361                                   av_unused uint32_t size)
362 {
363     const HEVCContext *h = avctx->priv_data;
364     AVDXVAContext *ctx = avctx->hwaccel_context;
365     struct hevc_dxva2_picture_context *ctx_pic = h->ref->hwaccel_picture_private;
366
367     if (DXVA_CONTEXT_DECODER(avctx, ctx) == NULL ||
368         DXVA_CONTEXT_CFG(avctx, ctx) == NULL ||
369         DXVA_CONTEXT_COUNT(avctx, ctx) <= 0)
370         return -1;
371     av_assert0(ctx_pic);
372
373     /* Fill up DXVA_PicParams_HEVC */
374     fill_picture_parameters(avctx, ctx, h, &ctx_pic->pp);
375
376     /* Fill up DXVA_Qmatrix_HEVC */
377     fill_scaling_lists(ctx, h, &ctx_pic->qm);
378
379     ctx_pic->slice_count    = 0;
380     ctx_pic->bitstream_size = 0;
381     ctx_pic->bitstream      = NULL;
382     return 0;
383 }
384
385 static int dxva2_hevc_decode_slice(AVCodecContext *avctx,
386                                    const uint8_t *buffer,
387                                    uint32_t size)
388 {
389     const HEVCContext *h = avctx->priv_data;
390     const HEVCFrame *current_picture = h->ref;
391     struct hevc_dxva2_picture_context *ctx_pic = current_picture->hwaccel_picture_private;
392     unsigned position;
393
394     if (ctx_pic->slice_count >= MAX_SLICES)
395         return -1;
396
397     if (!ctx_pic->bitstream)
398         ctx_pic->bitstream = buffer;
399     ctx_pic->bitstream_size += size;
400
401     position = buffer - ctx_pic->bitstream;
402     fill_slice_short(&ctx_pic->slice_short[ctx_pic->slice_count], position, size);
403     ctx_pic->slice_count++;
404
405     return 0;
406 }
407
408 static int dxva2_hevc_end_frame(AVCodecContext *avctx)
409 {
410     HEVCContext *h = avctx->priv_data;
411     struct hevc_dxva2_picture_context *ctx_pic = h->ref->hwaccel_picture_private;
412     int scale = ctx_pic->pp.dwCodingParamToolFlags & 1;
413     int ret;
414
415     if (ctx_pic->slice_count <= 0 || ctx_pic->bitstream_size <= 0)
416         return -1;
417
418     ret = ff_dxva2_common_end_frame(avctx, h->ref->frame,
419                                     &ctx_pic->pp, sizeof(ctx_pic->pp),
420                                     scale ? &ctx_pic->qm : NULL, scale ? sizeof(ctx_pic->qm) : 0,
421                                     commit_bitstream_and_slice_buffer);
422     return ret;
423 }
424
425 #if CONFIG_HEVC_DXVA2_HWACCEL
426 AVHWAccel ff_hevc_dxva2_hwaccel = {
427     .name           = "hevc_dxva2",
428     .type           = AVMEDIA_TYPE_VIDEO,
429     .id             = AV_CODEC_ID_HEVC,
430     .pix_fmt        = AV_PIX_FMT_DXVA2_VLD,
431     .start_frame    = dxva2_hevc_start_frame,
432     .decode_slice   = dxva2_hevc_decode_slice,
433     .end_frame      = dxva2_hevc_end_frame,
434     .frame_priv_data_size = sizeof(struct hevc_dxva2_picture_context),
435 };
436 #endif
437
438 #if CONFIG_HEVC_D3D11VA_HWACCEL
439 AVHWAccel ff_hevc_d3d11va_hwaccel = {
440     .name           = "hevc_d3d11va",
441     .type           = AVMEDIA_TYPE_VIDEO,
442     .id             = AV_CODEC_ID_HEVC,
443     .pix_fmt        = AV_PIX_FMT_D3D11VA_VLD,
444     .start_frame    = dxva2_hevc_start_frame,
445     .decode_slice   = dxva2_hevc_decode_slice,
446     .end_frame      = dxva2_hevc_end_frame,
447     .frame_priv_data_size = sizeof(struct hevc_dxva2_picture_context),
448 };
449 #endif