2 * DXVA2 H.264 HW acceleration.
4 * copyright (c) 2009 Laurent Aimar
6 * This file is part of FFmpeg.
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.
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.
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
23 #include "libavutil/avassert.h"
28 #include "mpegutils.h"
30 // The headers above may include w32threads.h, which uses the original
31 // _WIN32_WINNT define, while dxva2_internal.h redefines it to target a
32 // potentially newer version.
33 #include "dxva2_internal.h"
35 struct dxva2_picture_context {
36 DXVA_PicParams_H264 pp;
39 DXVA_Slice_H264_Short slice_short[MAX_SLICES];
40 DXVA_Slice_H264_Long slice_long[MAX_SLICES];
41 const uint8_t *bitstream;
42 unsigned bitstream_size;
45 static void fill_picture_entry(DXVA_PicEntry_H264 *pic,
46 unsigned index, unsigned flag)
48 assert((index&0x7f) == index && (flag&0x01) == flag);
49 pic->bPicEntry = index | (flag << 7);
52 static void fill_picture_parameters(const AVCodecContext *avctx, AVDXVAContext *ctx, const H264Context *h,
53 DXVA_PicParams_H264 *pp)
55 const H264Picture *current_picture = h->cur_pic_ptr;
56 const SPS *sps = h->ps.sps;
57 const PPS *pps = h->ps.pps;
60 memset(pp, 0, sizeof(*pp));
61 /* Configure current picture */
62 fill_picture_entry(&pp->CurrPic,
63 ff_dxva2_get_surface_index(avctx, ctx, current_picture->f),
64 h->picture_structure == PICT_BOTTOM_FIELD);
65 /* Configure the set of references */
66 pp->UsedForReferenceFlags = 0;
67 pp->NonExistingFrameFlags = 0;
68 for (i = 0, j = 0; i < FF_ARRAY_ELEMS(pp->RefFrameList); i++) {
70 if (j < h->short_ref_count) {
71 r = h->short_ref[j++];
74 while (!r && j < h->short_ref_count + 16)
75 r = h->long_ref[j++ - h->short_ref_count];
78 fill_picture_entry(&pp->RefFrameList[i],
79 ff_dxva2_get_surface_index(avctx, ctx, r->f),
82 if ((r->reference & PICT_TOP_FIELD) && r->field_poc[0] != INT_MAX)
83 pp->FieldOrderCntList[i][0] = r->field_poc[0];
84 if ((r->reference & PICT_BOTTOM_FIELD) && r->field_poc[1] != INT_MAX)
85 pp->FieldOrderCntList[i][1] = r->field_poc[1];
87 pp->FrameNumList[i] = r->long_ref ? r->pic_id : r->frame_num;
88 if (r->reference & PICT_TOP_FIELD)
89 pp->UsedForReferenceFlags |= 1 << (2*i + 0);
90 if (r->reference & PICT_BOTTOM_FIELD)
91 pp->UsedForReferenceFlags |= 1 << (2*i + 1);
93 pp->RefFrameList[i].bPicEntry = 0xff;
94 pp->FieldOrderCntList[i][0] = 0;
95 pp->FieldOrderCntList[i][1] = 0;
96 pp->FrameNumList[i] = 0;
100 pp->wFrameWidthInMbsMinus1 = h->mb_width - 1;
101 pp->wFrameHeightInMbsMinus1 = h->mb_height - 1;
102 pp->num_ref_frames = sps->ref_frame_count;
104 pp->wBitFields = ((h->picture_structure != PICT_FRAME) << 0) |
106 (h->picture_structure == PICT_FRAME)) << 1) |
107 (sps->residual_color_transform_flag << 2) |
108 /* sp_for_switch_flag (not implemented by FFmpeg) */
110 (sps->chroma_format_idc << 4) |
111 ((h->nal_ref_idc != 0) << 6) |
112 (pps->constrained_intra_pred << 7) |
113 (pps->weighted_pred << 8) |
114 (pps->weighted_bipred_idc << 9) |
115 /* MbsConsecutiveFlag */
117 (sps->frame_mbs_only_flag << 12) |
118 (pps->transform_8x8_mode << 13) |
119 ((sps->level_idc >= 31) << 14) |
120 /* IntraPicFlag (Modified if we detect a non
121 * intra slice in dxva2_h264_decode_slice) */
124 pp->bit_depth_luma_minus8 = sps->bit_depth_luma - 8;
125 pp->bit_depth_chroma_minus8 = sps->bit_depth_chroma - 8;
126 if (DXVA_CONTEXT_WORKAROUND(avctx, ctx) & FF_DXVA2_WORKAROUND_SCALING_LIST_ZIGZAG)
127 pp->Reserved16Bits = 0;
128 else if (DXVA_CONTEXT_WORKAROUND(avctx, ctx) & FF_DXVA2_WORKAROUND_INTEL_CLEARVIDEO)
129 pp->Reserved16Bits = 0x34c;
131 pp->Reserved16Bits = 3; /* FIXME is there a way to detect the right mode ? */
132 pp->StatusReportFeedbackNumber = 1 + DXVA_CONTEXT_REPORT_ID(avctx, ctx)++;
133 pp->CurrFieldOrderCnt[0] = 0;
134 if ((h->picture_structure & PICT_TOP_FIELD) &&
135 current_picture->field_poc[0] != INT_MAX)
136 pp->CurrFieldOrderCnt[0] = current_picture->field_poc[0];
137 pp->CurrFieldOrderCnt[1] = 0;
138 if ((h->picture_structure & PICT_BOTTOM_FIELD) &&
139 current_picture->field_poc[1] != INT_MAX)
140 pp->CurrFieldOrderCnt[1] = current_picture->field_poc[1];
141 pp->pic_init_qs_minus26 = pps->init_qs - 26;
142 pp->chroma_qp_index_offset = pps->chroma_qp_index_offset[0];
143 pp->second_chroma_qp_index_offset = pps->chroma_qp_index_offset[1];
144 pp->ContinuationFlag = 1;
145 pp->pic_init_qp_minus26 = pps->init_qp - 26;
146 pp->num_ref_idx_l0_active_minus1 = pps->ref_count[0] - 1;
147 pp->num_ref_idx_l1_active_minus1 = pps->ref_count[1] - 1;
148 pp->Reserved8BitsA = 0;
149 pp->frame_num = h->poc.frame_num;
150 pp->log2_max_frame_num_minus4 = sps->log2_max_frame_num - 4;
151 pp->pic_order_cnt_type = sps->poc_type;
152 if (sps->poc_type == 0)
153 pp->log2_max_pic_order_cnt_lsb_minus4 = sps->log2_max_poc_lsb - 4;
154 else if (sps->poc_type == 1)
155 pp->delta_pic_order_always_zero_flag = sps->delta_pic_order_always_zero_flag;
156 pp->direct_8x8_inference_flag = sps->direct_8x8_inference_flag;
157 pp->entropy_coding_mode_flag = pps->cabac;
158 pp->pic_order_present_flag = pps->pic_order_present;
159 pp->num_slice_groups_minus1 = pps->slice_group_count - 1;
160 pp->slice_group_map_type = pps->mb_slice_group_map_type;
161 pp->deblocking_filter_control_present_flag = pps->deblocking_filter_parameters_present;
162 pp->redundant_pic_cnt_present_flag= pps->redundant_pic_cnt_present;
163 pp->Reserved8BitsB = 0;
164 pp->slice_group_change_rate_minus1= 0; /* XXX not implemented by FFmpeg */
165 //pp->SliceGroupMap[810]; /* XXX not implemented by FFmpeg */
168 static void fill_scaling_lists(const AVCodecContext *avctx, AVDXVAContext *ctx, const H264Context *h, DXVA_Qmatrix_H264 *qm)
170 const PPS *pps = h->ps.pps;
172 memset(qm, 0, sizeof(*qm));
173 if (DXVA_CONTEXT_WORKAROUND(avctx, ctx) & FF_DXVA2_WORKAROUND_SCALING_LIST_ZIGZAG) {
174 for (i = 0; i < 6; i++)
175 for (j = 0; j < 16; j++)
176 qm->bScalingLists4x4[i][j] = pps->scaling_matrix4[i][j];
178 for (i = 0; i < 64; i++) {
179 qm->bScalingLists8x8[0][i] = pps->scaling_matrix8[0][i];
180 qm->bScalingLists8x8[1][i] = pps->scaling_matrix8[3][i];
183 for (i = 0; i < 6; i++)
184 for (j = 0; j < 16; j++)
185 qm->bScalingLists4x4[i][j] = pps->scaling_matrix4[i][ff_zigzag_scan[j]];
187 for (i = 0; i < 64; i++) {
188 qm->bScalingLists8x8[0][i] = pps->scaling_matrix8[0][ff_zigzag_direct[i]];
189 qm->bScalingLists8x8[1][i] = pps->scaling_matrix8[3][ff_zigzag_direct[i]];
194 static int is_slice_short(const AVCodecContext *avctx, AVDXVAContext *ctx)
196 assert(DXVA_CONTEXT_CFG_BITSTREAM(avctx, ctx) == 1 ||
197 DXVA_CONTEXT_CFG_BITSTREAM(avctx, ctx) == 2);
198 return DXVA_CONTEXT_CFG_BITSTREAM(avctx, ctx) == 2;
201 static void fill_slice_short(DXVA_Slice_H264_Short *slice,
202 unsigned position, unsigned size)
204 memset(slice, 0, sizeof(*slice));
205 slice->BSNALunitDataLocation = position;
206 slice->SliceBytesInBuffer = size;
207 slice->wBadSliceChopping = 0;
210 static int get_refpic_index(const DXVA_PicParams_H264 *pp, int surface_index)
213 for (i = 0; i < FF_ARRAY_ELEMS(pp->RefFrameList); i++) {
214 if ((pp->RefFrameList[i].bPicEntry & 0x7f) == surface_index)
220 static void fill_slice_long(AVCodecContext *avctx, DXVA_Slice_H264_Long *slice,
221 const DXVA_PicParams_H264 *pp, unsigned position, unsigned size)
223 const H264Context *h = avctx->priv_data;
224 H264SliceContext *sl = &h->slice_ctx[0];
225 AVDXVAContext *ctx = DXVA_CONTEXT(avctx);
228 memset(slice, 0, sizeof(*slice));
229 slice->BSNALunitDataLocation = position;
230 slice->SliceBytesInBuffer = size;
231 slice->wBadSliceChopping = 0;
233 slice->first_mb_in_slice = (sl->mb_y >> FIELD_OR_MBAFF_PICTURE(h)) * h->mb_width + sl->mb_x;
234 slice->NumMbsForSlice = 0; /* XXX it is set once we have all slices */
235 slice->BitOffsetToSliceData = get_bits_count(&sl->gb) - 8;
236 slice->slice_type = ff_h264_get_slice_type(sl);
237 if (sl->slice_type_fixed)
238 slice->slice_type += 5;
239 slice->luma_log2_weight_denom = sl->pwt.luma_log2_weight_denom;
240 slice->chroma_log2_weight_denom = sl->pwt.chroma_log2_weight_denom;
241 if (sl->list_count > 0)
242 slice->num_ref_idx_l0_active_minus1 = sl->ref_count[0] - 1;
243 if (sl->list_count > 1)
244 slice->num_ref_idx_l1_active_minus1 = sl->ref_count[1] - 1;
245 slice->slice_alpha_c0_offset_div2 = sl->slice_alpha_c0_offset / 2;
246 slice->slice_beta_offset_div2 = sl->slice_beta_offset / 2;
247 slice->Reserved8Bits = 0;
249 for (list = 0; list < 2; list++) {
251 for (i = 0; i < FF_ARRAY_ELEMS(slice->RefPicList[list]); i++) {
252 if (list < sl->list_count && i < sl->ref_count[list]) {
253 const H264Picture *r = sl->ref_list[list][i].parent;
256 if (DXVA_CONTEXT_WORKAROUND(avctx, ctx) & FF_DXVA2_WORKAROUND_INTEL_CLEARVIDEO)
257 index = ff_dxva2_get_surface_index(avctx, ctx, r->f);
259 index = get_refpic_index(pp, ff_dxva2_get_surface_index(avctx, ctx, r->f));
260 fill_picture_entry(&slice->RefPicList[list][i], index,
261 sl->ref_list[list][i].reference == PICT_BOTTOM_FIELD);
262 for (plane = 0; plane < 3; plane++) {
264 if (plane == 0 && sl->pwt.luma_weight_flag[list]) {
265 w = sl->pwt.luma_weight[i][list][0];
266 o = sl->pwt.luma_weight[i][list][1];
267 } else if (plane >= 1 && sl->pwt.chroma_weight_flag[list]) {
268 w = sl->pwt.chroma_weight[i][list][plane-1][0];
269 o = sl->pwt.chroma_weight[i][list][plane-1][1];
271 w = 1 << (plane == 0 ? sl->pwt.luma_log2_weight_denom :
272 sl->pwt.chroma_log2_weight_denom);
275 slice->Weights[list][i][plane][0] = w;
276 slice->Weights[list][i][plane][1] = o;
280 slice->RefPicList[list][i].bPicEntry = 0xff;
281 for (plane = 0; plane < 3; plane++) {
282 slice->Weights[list][i][plane][0] = 0;
283 slice->Weights[list][i][plane][1] = 0;
288 slice->slice_qs_delta = 0; /* XXX not implemented by FFmpeg */
289 slice->slice_qp_delta = sl->qscale - h->ps.pps->init_qp;
290 slice->redundant_pic_cnt = sl->redundant_pic_count;
291 if (sl->slice_type == AV_PICTURE_TYPE_B)
292 slice->direct_spatial_mv_pred_flag = sl->direct_spatial_mv_pred;
293 slice->cabac_init_idc = h->ps.pps->cabac ? sl->cabac_init_idc : 0;
294 if (sl->deblocking_filter < 2)
295 slice->disable_deblocking_filter_idc = 1 - sl->deblocking_filter;
297 slice->disable_deblocking_filter_idc = sl->deblocking_filter;
298 slice->slice_id = h->current_slice - 1;
301 static int commit_bitstream_and_slice_buffer(AVCodecContext *avctx,
302 DECODER_BUFFER_DESC *bs,
303 DECODER_BUFFER_DESC *sc)
305 const H264Context *h = avctx->priv_data;
306 const unsigned mb_count = h->mb_width * h->mb_height;
307 AVDXVAContext *ctx = DXVA_CONTEXT(avctx);
308 const H264Picture *current_picture = h->cur_pic_ptr;
309 struct dxva2_picture_context *ctx_pic = current_picture->hwaccel_picture_private;
310 DXVA_Slice_H264_Short *slice = NULL;
311 void *dxva_data_ptr = NULL;
312 uint8_t *dxva_data, *current, *end;
313 unsigned dxva_size = 0;
320 /* Create an annex B bitstream buffer with only slice NAL and finalize slice */
322 if (ff_dxva2_is_d3d11(avctx)) {
323 type = D3D11_VIDEO_DECODER_BUFFER_BITSTREAM;
324 if (FAILED(ID3D11VideoContext_GetDecoderBuffer(D3D11VA_CONTEXT(ctx)->video_context,
325 D3D11VA_CONTEXT(ctx)->decoder,
327 &dxva_size, &dxva_data_ptr)))
332 if (avctx->pix_fmt == AV_PIX_FMT_DXVA2_VLD) {
333 type = DXVA2_BitStreamDateBufferType;
334 if (FAILED(IDirectXVideoDecoder_GetBuffer(DXVA2_CONTEXT(ctx)->decoder,
336 &dxva_data_ptr, &dxva_size)))
341 dxva_data = dxva_data_ptr;
343 end = dxva_data + dxva_size;
345 for (i = 0; i < ctx_pic->slice_count; i++) {
346 static const uint8_t start_code[] = { 0, 0, 1 };
347 static const unsigned start_code_size = sizeof(start_code);
348 unsigned position, size;
350 assert(offsetof(DXVA_Slice_H264_Short, BSNALunitDataLocation) ==
351 offsetof(DXVA_Slice_H264_Long, BSNALunitDataLocation));
352 assert(offsetof(DXVA_Slice_H264_Short, SliceBytesInBuffer) ==
353 offsetof(DXVA_Slice_H264_Long, SliceBytesInBuffer));
355 if (is_slice_short(avctx, ctx))
356 slice = &ctx_pic->slice_short[i];
358 slice = (DXVA_Slice_H264_Short*)&ctx_pic->slice_long[i];
360 position = slice->BSNALunitDataLocation;
361 size = slice->SliceBytesInBuffer;
362 if (start_code_size + size > end - current) {
363 av_log(avctx, AV_LOG_ERROR, "Failed to build bitstream");
367 slice->BSNALunitDataLocation = current - dxva_data;
368 slice->SliceBytesInBuffer = start_code_size + size;
370 if (!is_slice_short(avctx, ctx)) {
371 DXVA_Slice_H264_Long *slice_long = (DXVA_Slice_H264_Long*)slice;
372 if (i < ctx_pic->slice_count - 1)
373 slice_long->NumMbsForSlice =
374 slice_long[1].first_mb_in_slice - slice_long[0].first_mb_in_slice;
376 slice_long->NumMbsForSlice = mb_count - slice_long->first_mb_in_slice;
379 memcpy(current, start_code, start_code_size);
380 current += start_code_size;
382 memcpy(current, &ctx_pic->bitstream[position], size);
385 padding = FFMIN(128 - ((current - dxva_data) & 127), end - current);
386 if (slice && padding > 0) {
387 memset(current, 0, padding);
390 slice->SliceBytesInBuffer += padding;
393 if (ff_dxva2_is_d3d11(avctx))
394 if (FAILED(ID3D11VideoContext_ReleaseDecoderBuffer(D3D11VA_CONTEXT(ctx)->video_context, D3D11VA_CONTEXT(ctx)->decoder, type)))
398 if (avctx->pix_fmt == AV_PIX_FMT_DXVA2_VLD)
399 if (FAILED(IDirectXVideoDecoder_ReleaseBuffer(DXVA2_CONTEXT(ctx)->decoder, type)))
402 if (i < ctx_pic->slice_count)
406 if (ff_dxva2_is_d3d11(avctx)) {
407 D3D11_VIDEO_DECODER_BUFFER_DESC *dsc11 = bs;
408 memset(dsc11, 0, sizeof(*dsc11));
409 dsc11->BufferType = type;
410 dsc11->DataSize = current - dxva_data;
411 dsc11->NumMBsInBuffer = mb_count;
413 type = D3D11_VIDEO_DECODER_BUFFER_SLICE_CONTROL;
415 av_assert0((dsc11->DataSize & 127) == 0);
419 if (avctx->pix_fmt == AV_PIX_FMT_DXVA2_VLD) {
420 DXVA2_DecodeBufferDesc *dsc2 = bs;
421 memset(dsc2, 0, sizeof(*dsc2));
422 dsc2->CompressedBufferType = type;
423 dsc2->DataSize = current - dxva_data;
424 dsc2->NumMBsInBuffer = mb_count;
426 type = DXVA2_SliceControlBufferType;
428 av_assert0((dsc2->DataSize & 127) == 0);
432 if (is_slice_short(avctx, ctx)) {
433 slice_data = ctx_pic->slice_short;
434 slice_size = ctx_pic->slice_count * sizeof(*ctx_pic->slice_short);
436 slice_data = ctx_pic->slice_long;
437 slice_size = ctx_pic->slice_count * sizeof(*ctx_pic->slice_long);
439 return ff_dxva2_commit_buffer(avctx, ctx, sc,
441 slice_data, slice_size, mb_count);
445 static int dxva2_h264_start_frame(AVCodecContext *avctx,
446 av_unused const uint8_t *buffer,
447 av_unused uint32_t size)
449 const H264Context *h = avctx->priv_data;
450 AVDXVAContext *ctx = DXVA_CONTEXT(avctx);
451 struct dxva2_picture_context *ctx_pic = h->cur_pic_ptr->hwaccel_picture_private;
453 if (!DXVA_CONTEXT_VALID(avctx, ctx))
457 /* Fill up DXVA_PicParams_H264 */
458 fill_picture_parameters(avctx, ctx, h, &ctx_pic->pp);
460 /* Fill up DXVA_Qmatrix_H264 */
461 fill_scaling_lists(avctx, ctx, h, &ctx_pic->qm);
463 ctx_pic->slice_count = 0;
464 ctx_pic->bitstream_size = 0;
465 ctx_pic->bitstream = NULL;
469 static int dxva2_h264_decode_slice(AVCodecContext *avctx,
470 const uint8_t *buffer,
473 const H264Context *h = avctx->priv_data;
474 const H264SliceContext *sl = &h->slice_ctx[0];
475 AVDXVAContext *ctx = DXVA_CONTEXT(avctx);
476 const H264Picture *current_picture = h->cur_pic_ptr;
477 struct dxva2_picture_context *ctx_pic = current_picture->hwaccel_picture_private;
480 if (ctx_pic->slice_count >= MAX_SLICES)
483 if (!ctx_pic->bitstream)
484 ctx_pic->bitstream = buffer;
485 ctx_pic->bitstream_size += size;
487 position = buffer - ctx_pic->bitstream;
488 if (is_slice_short(avctx, ctx))
489 fill_slice_short(&ctx_pic->slice_short[ctx_pic->slice_count],
492 fill_slice_long(avctx, &ctx_pic->slice_long[ctx_pic->slice_count],
493 &ctx_pic->pp, position, size);
494 ctx_pic->slice_count++;
496 if (sl->slice_type != AV_PICTURE_TYPE_I && sl->slice_type != AV_PICTURE_TYPE_SI)
497 ctx_pic->pp.wBitFields &= ~(1 << 15); /* Set IntraPicFlag to 0 */
501 static int dxva2_h264_end_frame(AVCodecContext *avctx)
503 H264Context *h = avctx->priv_data;
504 H264SliceContext *sl = &h->slice_ctx[0];
505 struct dxva2_picture_context *ctx_pic =
506 h->cur_pic_ptr->hwaccel_picture_private;
509 if (ctx_pic->slice_count <= 0 || ctx_pic->bitstream_size <= 0)
511 ret = ff_dxva2_common_end_frame(avctx, h->cur_pic_ptr->f,
512 &ctx_pic->pp, sizeof(ctx_pic->pp),
513 &ctx_pic->qm, sizeof(ctx_pic->qm),
514 commit_bitstream_and_slice_buffer);
516 ff_h264_draw_horiz_band(h, sl, 0, h->avctx->height);
520 #if CONFIG_H264_DXVA2_HWACCEL
521 AVHWAccel ff_h264_dxva2_hwaccel = {
522 .name = "h264_dxva2",
523 .type = AVMEDIA_TYPE_VIDEO,
524 .id = AV_CODEC_ID_H264,
525 .pix_fmt = AV_PIX_FMT_DXVA2_VLD,
526 .init = ff_dxva2_decode_init,
527 .uninit = ff_dxva2_decode_uninit,
528 .start_frame = dxva2_h264_start_frame,
529 .decode_slice = dxva2_h264_decode_slice,
530 .end_frame = dxva2_h264_end_frame,
531 .frame_priv_data_size = sizeof(struct dxva2_picture_context),
532 .priv_data_size = sizeof(FFDXVASharedContext),
536 #if CONFIG_H264_D3D11VA_HWACCEL
537 AVHWAccel ff_h264_d3d11va_hwaccel = {
538 .name = "h264_d3d11va",
539 .type = AVMEDIA_TYPE_VIDEO,
540 .id = AV_CODEC_ID_H264,
541 .pix_fmt = AV_PIX_FMT_D3D11VA_VLD,
542 .init = ff_dxva2_decode_init,
543 .uninit = ff_dxva2_decode_uninit,
544 .start_frame = dxva2_h264_start_frame,
545 .decode_slice = dxva2_h264_decode_slice,
546 .end_frame = dxva2_h264_end_frame,
547 .frame_priv_data_size = sizeof(struct dxva2_picture_context),
548 .priv_data_size = sizeof(FFDXVASharedContext),
552 #if CONFIG_H264_D3D11VA2_HWACCEL
553 AVHWAccel ff_h264_d3d11va2_hwaccel = {
554 .name = "h264_d3d11va2",
555 .type = AVMEDIA_TYPE_VIDEO,
556 .id = AV_CODEC_ID_H264,
557 .pix_fmt = AV_PIX_FMT_D3D11,
558 .init = ff_dxva2_decode_init,
559 .uninit = ff_dxva2_decode_uninit,
560 .start_frame = dxva2_h264_start_frame,
561 .decode_slice = dxva2_h264_decode_slice,
562 .end_frame = dxva2_h264_end_frame,
563 .frame_priv_data_size = sizeof(struct dxva2_picture_context),
564 .priv_data_size = sizeof(FFDXVASharedContext),