Merge commit '728c4658563dc82115ade0f1679679eddb7be5ff'
[ffmpeg.git] / libavcodec / vdpau.c
1 /*
2  * Video Decode and Presentation API for UNIX (VDPAU) is used for
3  * HW decode acceleration for MPEG-1/2, MPEG-4 ASP, H.264 and VC-1.
4  *
5  * Copyright (c) 2008 NVIDIA
6  *
7  * This file is part of FFmpeg.
8  *
9  * FFmpeg is free software; you can redistribute it and/or
10  * modify it under the terms of the GNU Lesser General Public
11  * License as published by the Free Software Foundation; either
12  * version 2.1 of the License, or (at your option) any later version.
13  *
14  * FFmpeg is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
17  * Lesser General Public License for more details.
18  *
19  * You should have received a copy of the GNU Lesser General Public
20  * License along with FFmpeg; if not, write to the Free Software
21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22  */
23
24 #include <limits.h>
25 #include "avcodec.h"
26 #include "h264.h"
27 #include "vc1.h"
28
29 #undef NDEBUG
30 #include <assert.h>
31
32 #include "vdpau.h"
33 #include "vdpau_internal.h"
34
35 /**
36  * @addtogroup VDPAU_Decoding
37  *
38  * @{
39  */
40
41 AVVDPAUContext *av_alloc_vdpaucontext(void)
42 {
43     return av_vdpau_alloc_context();
44 }
45
46 MAKE_ACCESSORS(AVVDPAUContext, vdpau_hwaccel, AVVDPAU_Render2, render2)
47
48 int ff_vdpau_common_start_frame(Picture *pic,
49                                 av_unused const uint8_t *buffer,
50                                 av_unused uint32_t size)
51 {
52     struct vdpau_picture_context *pic_ctx = pic->hwaccel_picture_private;
53
54     pic_ctx->bitstream_buffers_allocated = 0;
55     pic_ctx->bitstream_buffers_used      = 0;
56     pic_ctx->bitstream_buffers           = NULL;
57     return 0;
58 }
59
60 #if CONFIG_H263_VDPAU_HWACCEL  || CONFIG_MPEG1_VDPAU_HWACCEL || \
61     CONFIG_MPEG2_VDPAU_HWACCEL || CONFIG_MPEG4_VDPAU_HWACCEL || \
62     CONFIG_VC1_VDPAU_HWACCEL   || CONFIG_WMV3_VDPAU_HWACCEL
63 int ff_vdpau_mpeg_end_frame(AVCodecContext *avctx)
64 {
65     int res = 0;
66     AVVDPAUContext *hwctx = avctx->hwaccel_context;
67     MpegEncContext *s = avctx->priv_data;
68     Picture *pic = s->current_picture_ptr;
69     struct vdpau_picture_context *pic_ctx = pic->hwaccel_picture_private;
70     VdpVideoSurface surf = ff_vdpau_get_surface_id(pic);
71
72     if (!hwctx->render) {
73         res = hwctx->render2(avctx, &pic->f, (void *)&pic_ctx->info,
74                              pic_ctx->bitstream_buffers_used, pic_ctx->bitstream_buffers);
75     } else
76     hwctx->render(hwctx->decoder, surf, (void *)&pic_ctx->info,
77                   pic_ctx->bitstream_buffers_used, pic_ctx->bitstream_buffers);
78
79     ff_mpeg_draw_horiz_band(s, 0, s->avctx->height);
80     av_freep(&pic_ctx->bitstream_buffers);
81
82     return res;
83 }
84 #endif
85
86 int ff_vdpau_add_buffer(Picture *pic, const uint8_t *buf, uint32_t size)
87 {
88     struct vdpau_picture_context *pic_ctx = pic->hwaccel_picture_private;
89     VdpBitstreamBuffer *buffers = pic_ctx->bitstream_buffers;
90
91     buffers = av_fast_realloc(buffers, &pic_ctx->bitstream_buffers_allocated,
92                               (pic_ctx->bitstream_buffers_used + 1) * sizeof(*buffers));
93     if (!buffers)
94         return AVERROR(ENOMEM);
95
96     pic_ctx->bitstream_buffers = buffers;
97     buffers += pic_ctx->bitstream_buffers_used++;
98
99     buffers->struct_version  = VDP_BITSTREAM_BUFFER_VERSION;
100     buffers->bitstream       = buf;
101     buffers->bitstream_bytes = size;
102     return 0;
103 }
104
105 /* Obsolete non-hwaccel VDPAU support below... */
106
107 void ff_vdpau_h264_set_reference_frames(H264Context *h)
108 {
109     struct vdpau_render_state *render, *render_ref;
110     VdpReferenceFrameH264 *rf, *rf2;
111     Picture *pic;
112     int i, list, pic_frame_idx;
113
114     render = (struct vdpau_render_state *)h->cur_pic_ptr->f.data[0];
115     assert(render);
116
117     rf = &render->info.h264.referenceFrames[0];
118 #define H264_RF_COUNT FF_ARRAY_ELEMS(render->info.h264.referenceFrames)
119
120     for (list = 0; list < 2; ++list) {
121         Picture **lp = list ? h->long_ref : h->short_ref;
122         int ls = list ? 16 : h->short_ref_count;
123
124         for (i = 0; i < ls; ++i) {
125             pic = lp[i];
126             if (!pic || !pic->reference)
127                 continue;
128             pic_frame_idx = pic->long_ref ? pic->pic_id : pic->frame_num;
129
130             render_ref = (struct vdpau_render_state *)pic->f.data[0];
131             assert(render_ref);
132
133             rf2 = &render->info.h264.referenceFrames[0];
134             while (rf2 != rf) {
135                 if (
136                     (rf2->surface == render_ref->surface)
137                     && (rf2->is_long_term == pic->long_ref)
138                     && (rf2->frame_idx == pic_frame_idx)
139                 )
140                     break;
141                 ++rf2;
142             }
143             if (rf2 != rf) {
144                 rf2->top_is_reference    |= (pic->reference & PICT_TOP_FIELD)    ? VDP_TRUE : VDP_FALSE;
145                 rf2->bottom_is_reference |= (pic->reference & PICT_BOTTOM_FIELD) ? VDP_TRUE : VDP_FALSE;
146                 continue;
147             }
148
149             if (rf >= &render->info.h264.referenceFrames[H264_RF_COUNT])
150                 continue;
151
152             rf->surface             = render_ref->surface;
153             rf->is_long_term        = pic->long_ref;
154             rf->top_is_reference    = (pic->reference & PICT_TOP_FIELD)    ? VDP_TRUE : VDP_FALSE;
155             rf->bottom_is_reference = (pic->reference & PICT_BOTTOM_FIELD) ? VDP_TRUE : VDP_FALSE;
156             rf->field_order_cnt[0]  = pic->field_poc[0];
157             rf->field_order_cnt[1]  = pic->field_poc[1];
158             rf->frame_idx           = pic_frame_idx;
159
160             ++rf;
161         }
162     }
163
164     for (; rf < &render->info.h264.referenceFrames[H264_RF_COUNT]; ++rf) {
165         rf->surface             = VDP_INVALID_HANDLE;
166         rf->is_long_term        = 0;
167         rf->top_is_reference    = 0;
168         rf->bottom_is_reference = 0;
169         rf->field_order_cnt[0]  = 0;
170         rf->field_order_cnt[1]  = 0;
171         rf->frame_idx           = 0;
172     }
173 }
174
175 void ff_vdpau_add_data_chunk(uint8_t *data, const uint8_t *buf, int buf_size)
176 {
177     struct vdpau_render_state *render = (struct vdpau_render_state*)data;
178     assert(render);
179
180     render->bitstream_buffers= av_fast_realloc(
181         render->bitstream_buffers,
182         &render->bitstream_buffers_allocated,
183         sizeof(*render->bitstream_buffers)*(render->bitstream_buffers_used + 1)
184     );
185
186     render->bitstream_buffers[render->bitstream_buffers_used].struct_version  = VDP_BITSTREAM_BUFFER_VERSION;
187     render->bitstream_buffers[render->bitstream_buffers_used].bitstream       = buf;
188     render->bitstream_buffers[render->bitstream_buffers_used].bitstream_bytes = buf_size;
189     render->bitstream_buffers_used++;
190 }
191
192 #if CONFIG_H264_VDPAU_DECODER
193 void ff_vdpau_h264_picture_start(H264Context *h)
194 {
195     struct vdpau_render_state *render;
196     int i;
197
198     render = (struct vdpau_render_state *)h->cur_pic_ptr->f.data[0];
199     assert(render);
200
201     for (i = 0; i < 2; ++i) {
202         int foc = h->cur_pic_ptr->field_poc[i];
203         if (foc == INT_MAX)
204             foc = 0;
205         render->info.h264.field_order_cnt[i] = foc;
206     }
207
208     render->info.h264.frame_num = h->frame_num;
209 }
210
211 void ff_vdpau_h264_picture_complete(H264Context *h)
212 {
213     struct vdpau_render_state *render;
214
215     render = (struct vdpau_render_state *)h->cur_pic_ptr->f.data[0];
216     assert(render);
217
218     render->info.h264.slice_count = h->slice_num;
219     if (render->info.h264.slice_count < 1)
220         return;
221
222     render->info.h264.is_reference                           = (h->cur_pic_ptr->reference & 3) ? VDP_TRUE : VDP_FALSE;
223     render->info.h264.field_pic_flag                         = h->picture_structure != PICT_FRAME;
224     render->info.h264.bottom_field_flag                      = h->picture_structure == PICT_BOTTOM_FIELD;
225     render->info.h264.num_ref_frames                         = h->sps.ref_frame_count;
226     render->info.h264.mb_adaptive_frame_field_flag           = h->sps.mb_aff && !render->info.h264.field_pic_flag;
227     render->info.h264.constrained_intra_pred_flag            = h->pps.constrained_intra_pred;
228     render->info.h264.weighted_pred_flag                     = h->pps.weighted_pred;
229     render->info.h264.weighted_bipred_idc                    = h->pps.weighted_bipred_idc;
230     render->info.h264.frame_mbs_only_flag                    = h->sps.frame_mbs_only_flag;
231     render->info.h264.transform_8x8_mode_flag                = h->pps.transform_8x8_mode;
232     render->info.h264.chroma_qp_index_offset                 = h->pps.chroma_qp_index_offset[0];
233     render->info.h264.second_chroma_qp_index_offset          = h->pps.chroma_qp_index_offset[1];
234     render->info.h264.pic_init_qp_minus26                    = h->pps.init_qp - 26;
235     render->info.h264.num_ref_idx_l0_active_minus1           = h->pps.ref_count[0] - 1;
236     render->info.h264.num_ref_idx_l1_active_minus1           = h->pps.ref_count[1] - 1;
237     render->info.h264.log2_max_frame_num_minus4              = h->sps.log2_max_frame_num - 4;
238     render->info.h264.pic_order_cnt_type                     = h->sps.poc_type;
239     render->info.h264.log2_max_pic_order_cnt_lsb_minus4      = h->sps.poc_type ? 0 : h->sps.log2_max_poc_lsb - 4;
240     render->info.h264.delta_pic_order_always_zero_flag       = h->sps.delta_pic_order_always_zero_flag;
241     render->info.h264.direct_8x8_inference_flag              = h->sps.direct_8x8_inference_flag;
242     render->info.h264.entropy_coding_mode_flag               = h->pps.cabac;
243     render->info.h264.pic_order_present_flag                 = h->pps.pic_order_present;
244     render->info.h264.deblocking_filter_control_present_flag = h->pps.deblocking_filter_parameters_present;
245     render->info.h264.redundant_pic_cnt_present_flag         = h->pps.redundant_pic_cnt_present;
246     memcpy(render->info.h264.scaling_lists_4x4, h->pps.scaling_matrix4, sizeof(render->info.h264.scaling_lists_4x4));
247     memcpy(render->info.h264.scaling_lists_8x8[0], h->pps.scaling_matrix8[0], sizeof(render->info.h264.scaling_lists_8x8[0]));
248     memcpy(render->info.h264.scaling_lists_8x8[1], h->pps.scaling_matrix8[3], sizeof(render->info.h264.scaling_lists_8x8[0]));
249
250     ff_h264_draw_horiz_band(h, 0, h->avctx->height);
251     render->bitstream_buffers_used = 0;
252 }
253 #endif /* CONFIG_H264_VDPAU_DECODER */
254
255 #if CONFIG_MPEG_VDPAU_DECODER || CONFIG_MPEG1_VDPAU_DECODER
256 void ff_vdpau_mpeg_picture_complete(MpegEncContext *s, const uint8_t *buf,
257                                     int buf_size, int slice_count)
258 {
259     struct vdpau_render_state *render, *last, *next;
260     int i;
261
262     if (!s->current_picture_ptr) return;
263
264     render = (struct vdpau_render_state *)s->current_picture_ptr->f.data[0];
265     assert(render);
266
267     /* fill VdpPictureInfoMPEG1Or2 struct */
268     render->info.mpeg.picture_structure          = s->picture_structure;
269     render->info.mpeg.picture_coding_type        = s->pict_type;
270     render->info.mpeg.intra_dc_precision         = s->intra_dc_precision;
271     render->info.mpeg.frame_pred_frame_dct       = s->frame_pred_frame_dct;
272     render->info.mpeg.concealment_motion_vectors = s->concealment_motion_vectors;
273     render->info.mpeg.intra_vlc_format           = s->intra_vlc_format;
274     render->info.mpeg.alternate_scan             = s->alternate_scan;
275     render->info.mpeg.q_scale_type               = s->q_scale_type;
276     render->info.mpeg.top_field_first            = s->top_field_first;
277     render->info.mpeg.full_pel_forward_vector    = s->full_pel[0]; // MPEG-1 only.  Set 0 for MPEG-2
278     render->info.mpeg.full_pel_backward_vector   = s->full_pel[1]; // MPEG-1 only.  Set 0 for MPEG-2
279     render->info.mpeg.f_code[0][0]               = s->mpeg_f_code[0][0]; // For MPEG-1 fill both horiz. & vert.
280     render->info.mpeg.f_code[0][1]               = s->mpeg_f_code[0][1];
281     render->info.mpeg.f_code[1][0]               = s->mpeg_f_code[1][0];
282     render->info.mpeg.f_code[1][1]               = s->mpeg_f_code[1][1];
283     for (i = 0; i < 64; ++i) {
284         render->info.mpeg.intra_quantizer_matrix[i]     = s->intra_matrix[i];
285         render->info.mpeg.non_intra_quantizer_matrix[i] = s->inter_matrix[i];
286     }
287
288     render->info.mpeg.forward_reference          = VDP_INVALID_HANDLE;
289     render->info.mpeg.backward_reference         = VDP_INVALID_HANDLE;
290
291     switch(s->pict_type){
292     case  AV_PICTURE_TYPE_B:
293         next = (struct vdpau_render_state *)s->next_picture.f.data[0];
294         assert(next);
295         render->info.mpeg.backward_reference     = next->surface;
296         // no return here, going to set forward prediction
297     case  AV_PICTURE_TYPE_P:
298         last = (struct vdpau_render_state *)s->last_picture.f.data[0];
299         if (!last) // FIXME: Does this test make sense?
300             last = render; // predict second field from the first
301         render->info.mpeg.forward_reference      = last->surface;
302     }
303
304     ff_vdpau_add_data_chunk(s->current_picture_ptr->f.data[0], buf, buf_size);
305
306     render->info.mpeg.slice_count                = slice_count;
307
308     if (slice_count)
309         ff_mpeg_draw_horiz_band(s, 0, s->avctx->height);
310     render->bitstream_buffers_used               = 0;
311 }
312 #endif /* CONFIG_MPEG_VDPAU_DECODER || CONFIG_MPEG1_VDPAU_DECODER */
313
314 #if CONFIG_VC1_VDPAU_DECODER
315 void ff_vdpau_vc1_decode_picture(MpegEncContext *s, const uint8_t *buf,
316                                  int buf_size)
317 {
318     VC1Context *v = s->avctx->priv_data;
319     struct vdpau_render_state *render, *last, *next;
320
321     render = (struct vdpau_render_state *)s->current_picture.f.data[0];
322     assert(render);
323
324     /*  fill LvPictureInfoVC1 struct */
325     render->info.vc1.frame_coding_mode  = v->fcm ? v->fcm + 1 : 0;
326     render->info.vc1.postprocflag       = v->postprocflag;
327     render->info.vc1.pulldown           = v->broadcast;
328     render->info.vc1.interlace          = v->interlace;
329     render->info.vc1.tfcntrflag         = v->tfcntrflag;
330     render->info.vc1.finterpflag        = v->finterpflag;
331     render->info.vc1.psf                = v->psf;
332     render->info.vc1.dquant             = v->dquant;
333     render->info.vc1.panscan_flag       = v->panscanflag;
334     render->info.vc1.refdist_flag       = v->refdist_flag;
335     render->info.vc1.quantizer          = v->quantizer_mode;
336     render->info.vc1.extended_mv        = v->extended_mv;
337     render->info.vc1.extended_dmv       = v->extended_dmv;
338     render->info.vc1.overlap            = v->overlap;
339     render->info.vc1.vstransform        = v->vstransform;
340     render->info.vc1.loopfilter         = v->s.loop_filter;
341     render->info.vc1.fastuvmc           = v->fastuvmc;
342     render->info.vc1.range_mapy_flag    = v->range_mapy_flag;
343     render->info.vc1.range_mapy         = v->range_mapy;
344     render->info.vc1.range_mapuv_flag   = v->range_mapuv_flag;
345     render->info.vc1.range_mapuv        = v->range_mapuv;
346     /* Specific to simple/main profile only */
347     render->info.vc1.multires           = v->multires;
348     render->info.vc1.syncmarker         = v->s.resync_marker;
349     render->info.vc1.rangered           = v->rangered | (v->rangeredfrm << 1);
350     render->info.vc1.maxbframes         = v->s.max_b_frames;
351
352     render->info.vc1.deblockEnable      = v->postprocflag & 1;
353     render->info.vc1.pquant             = v->pq;
354
355     render->info.vc1.forward_reference  = VDP_INVALID_HANDLE;
356     render->info.vc1.backward_reference = VDP_INVALID_HANDLE;
357
358     if (v->bi_type)
359         render->info.vc1.picture_type = 4;
360     else
361         render->info.vc1.picture_type = s->pict_type - 1 + s->pict_type / 3;
362
363     switch(s->pict_type){
364     case  AV_PICTURE_TYPE_B:
365         next = (struct vdpau_render_state *)s->next_picture.f.data[0];
366         assert(next);
367         render->info.vc1.backward_reference = next->surface;
368         // no break here, going to set forward prediction
369     case  AV_PICTURE_TYPE_P:
370         last = (struct vdpau_render_state *)s->last_picture.f.data[0];
371         if (!last) // FIXME: Does this test make sense?
372             last = render; // predict second field from the first
373         render->info.vc1.forward_reference = last->surface;
374     }
375
376     ff_vdpau_add_data_chunk(s->current_picture_ptr->f.data[0], buf, buf_size);
377
378     render->info.vc1.slice_count          = 1;
379
380     ff_mpeg_draw_horiz_band(s, 0, s->avctx->height);
381     render->bitstream_buffers_used        = 0;
382 }
383 #endif /* (CONFIG_VC1_VDPAU_DECODER */
384
385 #if CONFIG_MPEG4_VDPAU_DECODER
386 void ff_vdpau_mpeg4_decode_picture(MpegEncContext *s, const uint8_t *buf,
387                                    int buf_size)
388 {
389     struct vdpau_render_state *render, *last, *next;
390     int i;
391
392     if (!s->current_picture_ptr) return;
393
394     render = (struct vdpau_render_state *)s->current_picture_ptr->f.data[0];
395     assert(render);
396
397     /* fill VdpPictureInfoMPEG4Part2 struct */
398     render->info.mpeg4.trd[0]                            = s->pp_time;
399     render->info.mpeg4.trb[0]                            = s->pb_time;
400     render->info.mpeg4.trd[1]                            = s->pp_field_time >> 1;
401     render->info.mpeg4.trb[1]                            = s->pb_field_time >> 1;
402     render->info.mpeg4.vop_time_increment_resolution     = s->avctx->time_base.den;
403     render->info.mpeg4.vop_coding_type                   = 0;
404     render->info.mpeg4.vop_fcode_forward                 = s->f_code;
405     render->info.mpeg4.vop_fcode_backward                = s->b_code;
406     render->info.mpeg4.resync_marker_disable             = !s->resync_marker;
407     render->info.mpeg4.interlaced                        = !s->progressive_sequence;
408     render->info.mpeg4.quant_type                        = s->mpeg_quant;
409     render->info.mpeg4.quarter_sample                    = s->quarter_sample;
410     render->info.mpeg4.short_video_header                = s->avctx->codec->id == AV_CODEC_ID_H263;
411     render->info.mpeg4.rounding_control                  = s->no_rounding;
412     render->info.mpeg4.alternate_vertical_scan_flag      = s->alternate_scan;
413     render->info.mpeg4.top_field_first                   = s->top_field_first;
414     for (i = 0; i < 64; ++i) {
415         render->info.mpeg4.intra_quantizer_matrix[i]     = s->intra_matrix[i];
416         render->info.mpeg4.non_intra_quantizer_matrix[i] = s->inter_matrix[i];
417     }
418     render->info.mpeg4.forward_reference                 = VDP_INVALID_HANDLE;
419     render->info.mpeg4.backward_reference                = VDP_INVALID_HANDLE;
420
421     switch (s->pict_type) {
422     case AV_PICTURE_TYPE_B:
423         next = (struct vdpau_render_state *)s->next_picture.f.data[0];
424         assert(next);
425         render->info.mpeg4.backward_reference     = next->surface;
426         render->info.mpeg4.vop_coding_type        = 2;
427         // no break here, going to set forward prediction
428     case AV_PICTURE_TYPE_P:
429         last = (struct vdpau_render_state *)s->last_picture.f.data[0];
430         assert(last);
431         render->info.mpeg4.forward_reference      = last->surface;
432     }
433
434     ff_vdpau_add_data_chunk(s->current_picture_ptr->f.data[0], buf, buf_size);
435
436     ff_mpeg_draw_horiz_band(s, 0, s->avctx->height);
437     render->bitstream_buffers_used = 0;
438 }
439 #endif /* CONFIG_MPEG4_VDPAU_DECODER */
440
441 int av_vdpau_get_profile(AVCodecContext *avctx, VdpDecoderProfile *profile)
442 {
443 #define PROFILE(prof)       \
444 do {                        \
445     *profile = prof;        \
446     return 0;               \
447 } while (0)
448
449     switch (avctx->codec_id) {
450     case AV_CODEC_ID_MPEG1VIDEO:               PROFILE(VDP_DECODER_PROFILE_MPEG1);
451     case AV_CODEC_ID_MPEG2VIDEO:
452         switch (avctx->profile) {
453         case FF_PROFILE_MPEG2_MAIN:            PROFILE(VDP_DECODER_PROFILE_MPEG2_MAIN);
454         case FF_PROFILE_MPEG2_SIMPLE:          PROFILE(VDP_DECODER_PROFILE_MPEG2_SIMPLE);
455         default:                               return AVERROR(EINVAL);
456         }
457     case AV_CODEC_ID_H263:                     PROFILE(VDP_DECODER_PROFILE_MPEG4_PART2_ASP);
458     case AV_CODEC_ID_MPEG4:
459         switch (avctx->profile) {
460         case FF_PROFILE_MPEG4_SIMPLE:          PROFILE(VDP_DECODER_PROFILE_MPEG4_PART2_SP);
461         case FF_PROFILE_MPEG4_ADVANCED_SIMPLE: PROFILE(VDP_DECODER_PROFILE_MPEG4_PART2_ASP);
462         default:                               return AVERROR(EINVAL);
463         }
464     case AV_CODEC_ID_H264:
465         switch (avctx->profile) {
466         case FF_PROFILE_H264_CONSTRAINED_BASELINE:
467         case FF_PROFILE_H264_BASELINE:         PROFILE(VDP_DECODER_PROFILE_H264_BASELINE);
468         case FF_PROFILE_H264_MAIN:             PROFILE(VDP_DECODER_PROFILE_H264_MAIN);
469         case FF_PROFILE_H264_HIGH:             PROFILE(VDP_DECODER_PROFILE_H264_HIGH);
470         default:                               return AVERROR(EINVAL);
471         }
472     case AV_CODEC_ID_WMV3:
473     case AV_CODEC_ID_VC1:
474         switch (avctx->profile) {
475         case FF_PROFILE_VC1_SIMPLE:            PROFILE(VDP_DECODER_PROFILE_VC1_SIMPLE);
476         case FF_PROFILE_VC1_MAIN:              PROFILE(VDP_DECODER_PROFILE_VC1_MAIN);
477         case FF_PROFILE_VC1_ADVANCED:          PROFILE(VDP_DECODER_PROFILE_VC1_ADVANCED);
478         default:                               return AVERROR(EINVAL);
479         }
480     }
481     return AVERROR(EINVAL);
482 }
483
484 AVVDPAUContext *av_vdpau_alloc_context(void)
485 {
486     return av_mallocz(sizeof(AVVDPAUContext));
487 }
488
489 /* @}*/