Libav
vdpau.c
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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 Libav.
8  *
9  * Libav 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  * Libav 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 Libav; 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 
42  av_unused const uint8_t *buffer,
43  av_unused uint32_t size)
44 {
45  struct vdpau_picture_context *pic_ctx = pic->hwaccel_picture_private;
46 
47  pic_ctx->bitstream_buffers_allocated = 0;
48  pic_ctx->bitstream_buffers_used = 0;
49  pic_ctx->bitstream_buffers = NULL;
50  return 0;
51 }
52 
53 #if CONFIG_H263_VDPAU_HWACCEL || CONFIG_MPEG1_VDPAU_HWACCEL || \
54  CONFIG_MPEG2_VDPAU_HWACCEL || CONFIG_MPEG4_VDPAU_HWACCEL || \
55  CONFIG_VC1_VDPAU_HWACCEL || CONFIG_WMV3_VDPAU_HWACCEL
57 {
58  AVVDPAUContext *hwctx = avctx->hwaccel_context;
59  MpegEncContext *s = avctx->priv_data;
60  Picture *pic = s->current_picture_ptr;
61  struct vdpau_picture_context *pic_ctx = pic->hwaccel_picture_private;
62  VdpVideoSurface surf = ff_vdpau_get_surface_id(pic);
63 
64  hwctx->render(hwctx->decoder, surf, (void *)&pic_ctx->info,
65  pic_ctx->bitstream_buffers_used, pic_ctx->bitstream_buffers);
66 
68  av_freep(&pic_ctx->bitstream_buffers);
69 
70  return 0;
71 }
72 #endif
73 
74 int ff_vdpau_add_buffer(Picture *pic, const uint8_t *buf, uint32_t size)
75 {
76  struct vdpau_picture_context *pic_ctx = pic->hwaccel_picture_private;
77  VdpBitstreamBuffer *buffers = pic_ctx->bitstream_buffers;
78 
79  buffers = av_fast_realloc(buffers, &pic_ctx->bitstream_buffers_allocated,
80  (pic_ctx->bitstream_buffers_used + 1) * sizeof(*buffers));
81  if (!buffers)
82  return AVERROR(ENOMEM);
83 
84  pic_ctx->bitstream_buffers = buffers;
85  buffers += pic_ctx->bitstream_buffers_used++;
86 
87  buffers->struct_version = VDP_BITSTREAM_BUFFER_VERSION;
88  buffers->bitstream = buf;
89  buffers->bitstream_bytes = size;
90  return 0;
91 }
92 
93 int av_vdpau_get_profile(AVCodecContext *avctx, VdpDecoderProfile *profile)
94 {
95 #define PROFILE(prof) \
96 do { \
97  *profile = prof; \
98  return 0; \
99 } while (0)
100 
101  switch (avctx->codec_id) {
102  case AV_CODEC_ID_MPEG1VIDEO: PROFILE(VDP_DECODER_PROFILE_MPEG1);
104  switch (avctx->profile) {
105  case FF_PROFILE_MPEG2_MAIN: PROFILE(VDP_DECODER_PROFILE_MPEG2_MAIN);
106  case FF_PROFILE_MPEG2_SIMPLE: PROFILE(VDP_DECODER_PROFILE_MPEG2_SIMPLE);
107  default: return AVERROR(EINVAL);
108  }
109  case AV_CODEC_ID_H263: PROFILE(VDP_DECODER_PROFILE_MPEG4_PART2_ASP);
110  case AV_CODEC_ID_MPEG4:
111  switch (avctx->profile) {
112  case FF_PROFILE_MPEG4_SIMPLE: PROFILE(VDP_DECODER_PROFILE_MPEG4_PART2_SP);
113  case FF_PROFILE_MPEG4_ADVANCED_SIMPLE: PROFILE(VDP_DECODER_PROFILE_MPEG4_PART2_ASP);
114  default: return AVERROR(EINVAL);
115  }
116  case AV_CODEC_ID_H264:
117  switch (avctx->profile) {
119  case FF_PROFILE_H264_BASELINE: PROFILE(VDP_DECODER_PROFILE_H264_BASELINE);
120  case FF_PROFILE_H264_MAIN: PROFILE(VDP_DECODER_PROFILE_H264_MAIN);
121  case FF_PROFILE_H264_HIGH: PROFILE(VDP_DECODER_PROFILE_H264_HIGH);
122  default: return AVERROR(EINVAL);
123  }
124  case AV_CODEC_ID_WMV3:
125  case AV_CODEC_ID_VC1:
126  switch (avctx->profile) {
127  case FF_PROFILE_VC1_SIMPLE: PROFILE(VDP_DECODER_PROFILE_VC1_SIMPLE);
128  case FF_PROFILE_VC1_MAIN: PROFILE(VDP_DECODER_PROFILE_VC1_MAIN);
129  case FF_PROFILE_VC1_ADVANCED: PROFILE(VDP_DECODER_PROFILE_VC1_ADVANCED);
130  default: return AVERROR(EINVAL);
131  }
132  }
133  return AVERROR(EINVAL);
134 }
135 
137 {
138  return av_mallocz(sizeof(AVVDPAUContext));
139 }
140 
141 /* @}*/