h264: move the parameter set definitions to a new header file
[ffmpeg.git] / libavcodec / dxva2_h264.c
1 /*
2  * DXVA2 H.264 HW acceleration.
3  *
4  * copyright (c) 2009 Laurent Aimar
5  *
6  * This file is part of Libav.
7  *
8  * Libav 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  * Libav 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 Libav; if not, write to the Free Software
20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21  */
22
23 #include "h264dec.h"
24 #include "h264data.h"
25 #include "h264_ps.h"
26 #include "mpegutils.h"
27
28 // The headers above may include w32threads.h, which uses the original
29 // _WIN32_WINNT define, while dxva2_internal.h redefines it to target a
30 // potentially newer version.
31 #include "dxva2_internal.h"
32
33 struct dxva2_picture_context {
34     DXVA_PicParams_H264   pp;
35     DXVA_Qmatrix_H264     qm;
36     unsigned              slice_count;
37     DXVA_Slice_H264_Short slice_short[MAX_SLICES];
38     DXVA_Slice_H264_Long  slice_long[MAX_SLICES];
39     const uint8_t         *bitstream;
40     unsigned              bitstream_size;
41 };
42
43 static void fill_picture_entry(DXVA_PicEntry_H264 *pic,
44                                unsigned index, unsigned flag)
45 {
46     assert((index&0x7f) == index && (flag&0x01) == flag);
47     pic->bPicEntry = index | (flag << 7);
48 }
49
50 static void fill_picture_parameters(const AVCodecContext *avctx, AVDXVAContext *ctx, const H264Context *h,
51                                     DXVA_PicParams_H264 *pp)
52 {
53     const H264Picture *current_picture = h->cur_pic_ptr;
54     const SPS *sps = h->ps.sps;
55     const PPS *pps = h->ps.pps;
56     int i, j;
57
58     memset(pp, 0, sizeof(*pp));
59     /* Configure current picture */
60     fill_picture_entry(&pp->CurrPic,
61                        ff_dxva2_get_surface_index(avctx, ctx, current_picture->f),
62                        h->picture_structure == PICT_BOTTOM_FIELD);
63     /* Configure the set of references */
64     pp->UsedForReferenceFlags  = 0;
65     pp->NonExistingFrameFlags  = 0;
66     for (i = 0, j = 0; i < FF_ARRAY_ELEMS(pp->RefFrameList); i++) {
67         const H264Picture *r;
68         if (j < h->short_ref_count) {
69             r = h->short_ref[j++];
70         } else {
71             r = NULL;
72             while (!r && j < h->short_ref_count + 16)
73                 r = h->long_ref[j++ - h->short_ref_count];
74         }
75         if (r) {
76             fill_picture_entry(&pp->RefFrameList[i],
77                                ff_dxva2_get_surface_index(avctx, ctx, r->f),
78                                r->long_ref != 0);
79
80             if ((r->reference & PICT_TOP_FIELD) && r->field_poc[0] != INT_MAX)
81                 pp->FieldOrderCntList[i][0] = r->field_poc[0];
82             if ((r->reference & PICT_BOTTOM_FIELD) && r->field_poc[1] != INT_MAX)
83                 pp->FieldOrderCntList[i][1] = r->field_poc[1];
84
85             pp->FrameNumList[i] = r->long_ref ? r->pic_id : r->frame_num;
86             if (r->reference & PICT_TOP_FIELD)
87                 pp->UsedForReferenceFlags |= 1 << (2*i + 0);
88             if (r->reference & PICT_BOTTOM_FIELD)
89                 pp->UsedForReferenceFlags |= 1 << (2*i + 1);
90         } else {
91             pp->RefFrameList[i].bPicEntry = 0xff;
92             pp->FieldOrderCntList[i][0]   = 0;
93             pp->FieldOrderCntList[i][1]   = 0;
94             pp->FrameNumList[i]           = 0;
95         }
96     }
97
98     pp->wFrameWidthInMbsMinus1        = h->mb_width  - 1;
99     pp->wFrameHeightInMbsMinus1       = h->mb_height - 1;
100     pp->num_ref_frames                = sps->ref_frame_count;
101
102     pp->wBitFields                    = ((h->picture_structure != PICT_FRAME) <<  0) |
103                                         ((sps->mb_aff &&
104                                         (h->picture_structure == PICT_FRAME)) <<  1) |
105                                         (sps->residual_color_transform_flag   <<  2) |
106                                         /* sp_for_switch_flag (not implemented by Libav) */
107                                         (0                                    <<  3) |
108                                         (sps->chroma_format_idc               <<  4) |
109                                         ((h->nal_ref_idc != 0)                <<  6) |
110                                         (pps->constrained_intra_pred          <<  7) |
111                                         (pps->weighted_pred                   <<  8) |
112                                         (pps->weighted_bipred_idc             <<  9) |
113                                         /* MbsConsecutiveFlag */
114                                         (1                                    << 11) |
115                                         (sps->frame_mbs_only_flag             << 12) |
116                                         (pps->transform_8x8_mode              << 13) |
117                                         ((sps->level_idc >= 31)               << 14) |
118                                         /* IntraPicFlag (Modified if we detect a non
119                                          * intra slice in dxva2_h264_decode_slice) */
120                                         (1                                    << 15);
121
122     pp->bit_depth_luma_minus8         = sps->bit_depth_luma - 8;
123     pp->bit_depth_chroma_minus8       = sps->bit_depth_chroma - 8;
124     if (DXVA_CONTEXT_WORKAROUND(avctx, ctx) & FF_DXVA2_WORKAROUND_SCALING_LIST_ZIGZAG)
125         pp->Reserved16Bits            = 0;
126     else if (DXVA_CONTEXT_WORKAROUND(avctx, ctx) & FF_DXVA2_WORKAROUND_INTEL_CLEARVIDEO)
127         pp->Reserved16Bits            = 0x34c;
128     else
129         pp->Reserved16Bits            = 3; /* FIXME is there a way to detect the right mode ? */
130     pp->StatusReportFeedbackNumber    = 1 + DXVA_CONTEXT_REPORT_ID(avctx, ctx)++;
131     pp->CurrFieldOrderCnt[0] = 0;
132     if ((h->picture_structure & PICT_TOP_FIELD) &&
133         current_picture->field_poc[0] != INT_MAX)
134         pp->CurrFieldOrderCnt[0] = current_picture->field_poc[0];
135     pp->CurrFieldOrderCnt[1] = 0;
136     if ((h->picture_structure & PICT_BOTTOM_FIELD) &&
137         current_picture->field_poc[1] != INT_MAX)
138         pp->CurrFieldOrderCnt[1] = current_picture->field_poc[1];
139     pp->pic_init_qs_minus26           = pps->init_qs - 26;
140     pp->chroma_qp_index_offset        = pps->chroma_qp_index_offset[0];
141     pp->second_chroma_qp_index_offset = pps->chroma_qp_index_offset[1];
142     pp->ContinuationFlag              = 1;
143     pp->pic_init_qp_minus26           = pps->init_qp - 26;
144     pp->num_ref_idx_l0_active_minus1  = pps->ref_count[0] - 1;
145     pp->num_ref_idx_l1_active_minus1  = pps->ref_count[1] - 1;
146     pp->Reserved8BitsA                = 0;
147     pp->frame_num                     = h->poc.frame_num;
148     pp->log2_max_frame_num_minus4     = sps->log2_max_frame_num - 4;
149     pp->pic_order_cnt_type            = sps->poc_type;
150     if (sps->poc_type == 0)
151         pp->log2_max_pic_order_cnt_lsb_minus4 = sps->log2_max_poc_lsb - 4;
152     else if (sps->poc_type == 1)
153         pp->delta_pic_order_always_zero_flag = sps->delta_pic_order_always_zero_flag;
154     pp->direct_8x8_inference_flag     = sps->direct_8x8_inference_flag;
155     pp->entropy_coding_mode_flag      = pps->cabac;
156     pp->pic_order_present_flag        = pps->pic_order_present;
157     pp->num_slice_groups_minus1       = pps->slice_group_count - 1;
158     pp->slice_group_map_type          = pps->mb_slice_group_map_type;
159     pp->deblocking_filter_control_present_flag = pps->deblocking_filter_parameters_present;
160     pp->redundant_pic_cnt_present_flag= pps->redundant_pic_cnt_present;
161     pp->Reserved8BitsB                = 0;
162     pp->slice_group_change_rate_minus1= 0;  /* XXX not implemented by Libav */
163     //pp->SliceGroupMap[810];               /* XXX not implemented by Libav */
164 }
165
166 static void fill_scaling_lists(const AVCodecContext *avctx, AVDXVAContext *ctx, const H264Context *h, DXVA_Qmatrix_H264 *qm)
167 {
168     unsigned i, j;
169     const SPS *sps = h->ps.sps;
170     const PPS *pps = h->ps.pps;
171     memset(qm, 0, sizeof(*qm));
172     if (DXVA_CONTEXT_WORKAROUND(avctx, ctx) & FF_DXVA2_WORKAROUND_SCALING_LIST_ZIGZAG) {
173         for (i = 0; i < 6; i++)
174             for (j = 0; j < 16; j++)
175                 qm->bScalingLists4x4[i][j] = pps->scaling_matrix4[i][j];
176
177         for (i = 0; i < 64; i++) {
178             qm->bScalingLists8x8[0][i] = pps->scaling_matrix8[0][i];
179             qm->bScalingLists8x8[1][i] = pps->scaling_matrix8[3][i];
180         }
181     } else {
182         for (i = 0; i < 6; i++)
183             for (j = 0; j < 16; j++)
184                 qm->bScalingLists4x4[i][j] = pps->scaling_matrix4[i][ff_zigzag_scan[j]];
185
186         for (i = 0; i < 64; i++) {
187             qm->bScalingLists8x8[0][i] = pps->scaling_matrix8[0][ff_zigzag_direct[i]];
188             qm->bScalingLists8x8[1][i] = pps->scaling_matrix8[3][ff_zigzag_direct[i]];
189         }
190     }
191 }
192
193 static int is_slice_short(const AVCodecContext *avctx, AVDXVAContext *ctx)
194 {
195     assert(DXVA_CONTEXT_CFG_BITSTREAM(avctx, ctx) == 1 ||
196            DXVA_CONTEXT_CFG_BITSTREAM(avctx, ctx) == 2);
197     return DXVA_CONTEXT_CFG_BITSTREAM(avctx, ctx) == 2;
198 }
199
200 static void fill_slice_short(DXVA_Slice_H264_Short *slice,
201                              unsigned position, unsigned size)
202 {
203     memset(slice, 0, sizeof(*slice));
204     slice->BSNALunitDataLocation = position;
205     slice->SliceBytesInBuffer    = size;
206     slice->wBadSliceChopping     = 0;
207 }
208
209 static int get_refpic_index(const DXVA_PicParams_H264 *pp, int surface_index)
210 {
211     int i;
212     for (i = 0; i < FF_ARRAY_ELEMS(pp->RefFrameList); i++) {
213         if ((pp->RefFrameList[i].bPicEntry & 0x7f) == surface_index)
214           return i;
215     }
216     return 0x7f;
217 }
218
219 static void fill_slice_long(AVCodecContext *avctx, DXVA_Slice_H264_Long *slice,
220                             const DXVA_PicParams_H264 *pp, unsigned position, unsigned size)
221 {
222     const H264Context *h = avctx->priv_data;
223     H264SliceContext *sl = &h->slice_ctx[0];
224     AVDXVAContext *ctx = avctx->hwaccel_context;
225     unsigned list;
226
227     memset(slice, 0, sizeof(*slice));
228     slice->BSNALunitDataLocation = position;
229     slice->SliceBytesInBuffer    = size;
230     slice->wBadSliceChopping     = 0;
231
232     slice->first_mb_in_slice     = (sl->mb_y >> FIELD_OR_MBAFF_PICTURE(h)) * h->mb_width + sl->mb_x;
233     slice->NumMbsForSlice        = 0; /* XXX it is set once we have all slices */
234     slice->BitOffsetToSliceData  = get_bits_count(&sl->gb);
235     slice->slice_type            = ff_h264_get_slice_type(sl);
236     if (sl->slice_type_fixed)
237         slice->slice_type += 5;
238     slice->luma_log2_weight_denom       = sl->pwt.luma_log2_weight_denom;
239     slice->chroma_log2_weight_denom     = sl->pwt.chroma_log2_weight_denom;
240     if (sl->list_count > 0)
241         slice->num_ref_idx_l0_active_minus1 = sl->ref_count[0] - 1;
242     if (sl->list_count > 1)
243         slice->num_ref_idx_l1_active_minus1 = sl->ref_count[1] - 1;
244     slice->slice_alpha_c0_offset_div2   = sl->slice_alpha_c0_offset / 2;
245     slice->slice_beta_offset_div2       = sl->slice_beta_offset     / 2;
246     slice->Reserved8Bits                = 0;
247
248     for (list = 0; list < 2; list++) {
249         unsigned i;
250         for (i = 0; i < FF_ARRAY_ELEMS(slice->RefPicList[list]); i++) {
251             if (list < sl->list_count && i < sl->ref_count[list]) {
252                 const H264Picture *r = sl->ref_list[list][i].parent;
253                 unsigned plane;
254                 unsigned index;
255                 if (DXVA_CONTEXT_WORKAROUND(avctx, ctx) & FF_DXVA2_WORKAROUND_INTEL_CLEARVIDEO)
256                     index = ff_dxva2_get_surface_index(avctx, ctx, r->f);
257                 else
258                     index = get_refpic_index(pp, ff_dxva2_get_surface_index(avctx, ctx, r->f));
259                 fill_picture_entry(&slice->RefPicList[list][i], index,
260                                    r->reference == PICT_BOTTOM_FIELD);
261                 for (plane = 0; plane < 3; plane++) {
262                     int w, o;
263                     if (plane == 0 && sl->pwt.luma_weight_flag[list]) {
264                         w = sl->pwt.luma_weight[i][list][0];
265                         o = sl->pwt.luma_weight[i][list][1];
266                     } else if (plane >= 1 && sl->pwt.chroma_weight_flag[list]) {
267                         w = sl->pwt.chroma_weight[i][list][plane-1][0];
268                         o = sl->pwt.chroma_weight[i][list][plane-1][1];
269                     } else {
270                         w = 1 << (plane == 0 ? sl->pwt.luma_log2_weight_denom :
271                                                sl->pwt.chroma_log2_weight_denom);
272                         o = 0;
273                     }
274                     slice->Weights[list][i][plane][0] = w;
275                     slice->Weights[list][i][plane][1] = o;
276                 }
277             } else {
278                 unsigned plane;
279                 slice->RefPicList[list][i].bPicEntry = 0xff;
280                 for (plane = 0; plane < 3; plane++) {
281                     slice->Weights[list][i][plane][0] = 0;
282                     slice->Weights[list][i][plane][1] = 0;
283                 }
284             }
285         }
286     }
287     slice->slice_qs_delta    = 0; /* XXX not implemented by Libav */
288     slice->slice_qp_delta    = sl->qscale - h->ps.pps->init_qp;
289     slice->redundant_pic_cnt = sl->redundant_pic_count;
290     if (sl->slice_type == AV_PICTURE_TYPE_B)
291         slice->direct_spatial_mv_pred_flag = sl->direct_spatial_mv_pred;
292     slice->cabac_init_idc = h->ps.pps->cabac ? sl->cabac_init_idc : 0;
293     if (sl->deblocking_filter < 2)
294         slice->disable_deblocking_filter_idc = 1 - sl->deblocking_filter;
295     else
296         slice->disable_deblocking_filter_idc = sl->deblocking_filter;
297     slice->slice_id = h->current_slice - 1;
298 }
299
300 static int commit_bitstream_and_slice_buffer(AVCodecContext *avctx,
301                                              DECODER_BUFFER_DESC *bs,
302                                              DECODER_BUFFER_DESC *sc)
303 {
304     const H264Context *h = avctx->priv_data;
305     const unsigned mb_count = h->mb_width * h->mb_height;
306     AVDXVAContext *ctx = avctx->hwaccel_context;
307     const H264Picture *current_picture = h->cur_pic_ptr;
308     struct dxva2_picture_context *ctx_pic = current_picture->hwaccel_picture_private;
309     DXVA_Slice_H264_Short *slice = NULL;
310     void     *dxva_data_ptr;
311     uint8_t  *dxva_data, *current, *end;
312     unsigned dxva_size;
313     void     *slice_data;
314     unsigned slice_size;
315     unsigned padding;
316     unsigned i;
317     unsigned type;
318
319     /* Create an annex B bitstream buffer with only slice NAL and finalize slice */
320 #if CONFIG_D3D11VA
321     if (avctx->pix_fmt == AV_PIX_FMT_D3D11VA_VLD) {
322         type = D3D11_VIDEO_DECODER_BUFFER_BITSTREAM;
323         if (FAILED(ID3D11VideoContext_GetDecoderBuffer(D3D11VA_CONTEXT(ctx)->video_context,
324                                                        D3D11VA_CONTEXT(ctx)->decoder,
325                                                        type,
326                                                        &dxva_size, &dxva_data_ptr)))
327             return -1;
328     }
329 #endif
330 #if CONFIG_DXVA2
331     if (avctx->pix_fmt == AV_PIX_FMT_DXVA2_VLD) {
332         type = DXVA2_BitStreamDateBufferType;
333         if (FAILED(IDirectXVideoDecoder_GetBuffer(DXVA2_CONTEXT(ctx)->decoder,
334                                                   type,
335                                                   &dxva_data_ptr, &dxva_size)))
336             return -1;
337     }
338 #endif
339
340     dxva_data = dxva_data_ptr;
341     current = dxva_data;
342     end = dxva_data + dxva_size;
343
344     for (i = 0; i < ctx_pic->slice_count; i++) {
345         static const uint8_t start_code[] = { 0, 0, 1 };
346         static const unsigned start_code_size = sizeof(start_code);
347         unsigned position, size;
348
349         assert(offsetof(DXVA_Slice_H264_Short, BSNALunitDataLocation) ==
350                offsetof(DXVA_Slice_H264_Long,  BSNALunitDataLocation));
351         assert(offsetof(DXVA_Slice_H264_Short, SliceBytesInBuffer) ==
352                offsetof(DXVA_Slice_H264_Long,  SliceBytesInBuffer));
353
354         if (is_slice_short(avctx, ctx))
355             slice = &ctx_pic->slice_short[i];
356         else
357             slice = (DXVA_Slice_H264_Short*)&ctx_pic->slice_long[i];
358
359         position = slice->BSNALunitDataLocation;
360         size     = slice->SliceBytesInBuffer;
361         if (start_code_size + size > end - current) {
362             av_log(avctx, AV_LOG_ERROR, "Failed to build bitstream");
363             break;
364         }
365
366         slice->BSNALunitDataLocation = current - dxva_data;
367         slice->SliceBytesInBuffer    = start_code_size + size;
368
369         if (!is_slice_short(avctx, ctx)) {
370             DXVA_Slice_H264_Long *slice_long = (DXVA_Slice_H264_Long*)slice;
371             if (i < ctx_pic->slice_count - 1)
372                 slice_long->NumMbsForSlice =
373                     slice_long[1].first_mb_in_slice - slice_long[0].first_mb_in_slice;
374             else
375                 slice_long->NumMbsForSlice = mb_count - slice_long->first_mb_in_slice;
376         }
377
378         memcpy(current, start_code, start_code_size);
379         current += start_code_size;
380
381         memcpy(current, &ctx_pic->bitstream[position], size);
382         current += size;
383     }
384     padding = FFMIN(128 - ((current - dxva_data) & 127), end - current);
385     if (slice && padding > 0) {
386         memset(current, 0, padding);
387         current += padding;
388
389         slice->SliceBytesInBuffer += padding;
390     }
391 #if CONFIG_D3D11VA
392     if (avctx->pix_fmt == AV_PIX_FMT_D3D11VA_VLD)
393         if (FAILED(ID3D11VideoContext_ReleaseDecoderBuffer(D3D11VA_CONTEXT(ctx)->video_context, D3D11VA_CONTEXT(ctx)->decoder, type)))
394             return -1;
395 #endif
396 #if CONFIG_DXVA2
397     if (avctx->pix_fmt == AV_PIX_FMT_DXVA2_VLD)
398         if (FAILED(IDirectXVideoDecoder_ReleaseBuffer(DXVA2_CONTEXT(ctx)->decoder, type)))
399             return -1;
400 #endif
401     if (i < ctx_pic->slice_count)
402         return -1;
403
404 #if CONFIG_D3D11VA
405     if (avctx->pix_fmt == AV_PIX_FMT_D3D11VA_VLD) {
406         D3D11_VIDEO_DECODER_BUFFER_DESC *dsc11 = bs;
407         memset(dsc11, 0, sizeof(*dsc11));
408         dsc11->BufferType           = type;
409         dsc11->DataSize             = current - dxva_data;
410         dsc11->NumMBsInBuffer       = mb_count;
411
412         type = D3D11_VIDEO_DECODER_BUFFER_SLICE_CONTROL;
413     }
414 #endif
415 #if CONFIG_DXVA2
416     if (avctx->pix_fmt == AV_PIX_FMT_DXVA2_VLD) {
417         DXVA2_DecodeBufferDesc *dsc2 = bs;
418         memset(dsc2, 0, sizeof(*dsc2));
419         dsc2->CompressedBufferType = type;
420         dsc2->DataSize             = current - dxva_data;
421         dsc2->NumMBsInBuffer       = mb_count;
422
423         type = DXVA2_SliceControlBufferType;
424     }
425 #endif
426
427     if (is_slice_short(avctx, ctx)) {
428         slice_data = ctx_pic->slice_short;
429         slice_size = ctx_pic->slice_count * sizeof(*ctx_pic->slice_short);
430     } else {
431         slice_data = ctx_pic->slice_long;
432         slice_size = ctx_pic->slice_count * sizeof(*ctx_pic->slice_long);
433     }
434     assert((bs->DataSize & 127) == 0);
435     return ff_dxva2_commit_buffer(avctx, ctx, sc,
436                                   type,
437                                   slice_data, slice_size, mb_count);
438 }
439
440
441 static int dxva2_h264_start_frame(AVCodecContext *avctx,
442                                   av_unused const uint8_t *buffer,
443                                   av_unused uint32_t size)
444 {
445     const H264Context *h = avctx->priv_data;
446     AVDXVAContext *ctx = avctx->hwaccel_context;
447     struct dxva2_picture_context *ctx_pic = h->cur_pic_ptr->hwaccel_picture_private;
448
449     if (DXVA_CONTEXT_DECODER(avctx, ctx) == NULL ||
450         DXVA_CONTEXT_CFG(avctx, ctx) == NULL ||
451         DXVA_CONTEXT_COUNT(avctx, ctx) <= 0)
452         return -1;
453     assert(ctx_pic);
454
455     /* Fill up DXVA_PicParams_H264 */
456     fill_picture_parameters(avctx, ctx, h, &ctx_pic->pp);
457
458     /* Fill up DXVA_Qmatrix_H264 */
459     fill_scaling_lists(avctx, ctx, h, &ctx_pic->qm);
460
461     ctx_pic->slice_count    = 0;
462     ctx_pic->bitstream_size = 0;
463     ctx_pic->bitstream      = NULL;
464     return 0;
465 }
466
467 static int dxva2_h264_decode_slice(AVCodecContext *avctx,
468                                    const uint8_t *buffer,
469                                    uint32_t size)
470 {
471     const H264Context *h = avctx->priv_data;
472     const H264SliceContext *sl = &h->slice_ctx[0];
473     AVDXVAContext *ctx = avctx->hwaccel_context;
474     const H264Picture *current_picture = h->cur_pic_ptr;
475     struct dxva2_picture_context *ctx_pic = current_picture->hwaccel_picture_private;
476     unsigned position;
477
478     if (ctx_pic->slice_count >= MAX_SLICES)
479         return -1;
480
481     if (!ctx_pic->bitstream)
482         ctx_pic->bitstream = buffer;
483     ctx_pic->bitstream_size += size;
484
485     position = buffer - ctx_pic->bitstream;
486     if (is_slice_short(avctx, ctx))
487         fill_slice_short(&ctx_pic->slice_short[ctx_pic->slice_count],
488                          position, size);
489     else
490         fill_slice_long(avctx, &ctx_pic->slice_long[ctx_pic->slice_count],
491                         &ctx_pic->pp, position, size);
492     ctx_pic->slice_count++;
493
494     if (sl->slice_type != AV_PICTURE_TYPE_I && sl->slice_type != AV_PICTURE_TYPE_SI)
495         ctx_pic->pp.wBitFields &= ~(1 << 15); /* Set IntraPicFlag to 0 */
496     return 0;
497 }
498
499 static int dxva2_h264_end_frame(AVCodecContext *avctx)
500 {
501     H264Context *h = avctx->priv_data;
502     H264SliceContext *sl = &h->slice_ctx[0];
503     struct dxva2_picture_context *ctx_pic =
504         h->cur_pic_ptr->hwaccel_picture_private;
505     int ret;
506
507     if (ctx_pic->slice_count <= 0 || ctx_pic->bitstream_size <= 0)
508         return -1;
509     ret = ff_dxva2_common_end_frame(avctx, h->cur_pic_ptr->f,
510                                     &ctx_pic->pp, sizeof(ctx_pic->pp),
511                                     &ctx_pic->qm, sizeof(ctx_pic->qm),
512                                     commit_bitstream_and_slice_buffer);
513     if (!ret)
514         ff_h264_draw_horiz_band(h, sl, 0, h->avctx->height);
515     return ret;
516 }
517
518 #if CONFIG_H264_DXVA2_HWACCEL
519 AVHWAccel ff_h264_dxva2_hwaccel = {
520     .name           = "h264_dxva2",
521     .type           = AVMEDIA_TYPE_VIDEO,
522     .id             = AV_CODEC_ID_H264,
523     .pix_fmt        = AV_PIX_FMT_DXVA2_VLD,
524     .start_frame    = dxva2_h264_start_frame,
525     .decode_slice   = dxva2_h264_decode_slice,
526     .end_frame      = dxva2_h264_end_frame,
527     .frame_priv_data_size = sizeof(struct dxva2_picture_context),
528 };
529 #endif
530
531 #if CONFIG_H264_D3D11VA_HWACCEL
532 AVHWAccel ff_h264_d3d11va_hwaccel = {
533     .name           = "h264_d3d11va",
534     .type           = AVMEDIA_TYPE_VIDEO,
535     .id             = AV_CODEC_ID_H264,
536     .pix_fmt        = AV_PIX_FMT_D3D11VA_VLD,
537     .start_frame    = dxva2_h264_start_frame,
538     .decode_slice   = dxva2_h264_decode_slice,
539     .end_frame      = dxva2_h264_end_frame,
540     .frame_priv_data_size = sizeof(struct dxva2_picture_context),
541 };
542 #endif