libfdk-aacdec: Decode the first AAC frame to reliably identify the bitstream
[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 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
35 /**
36  * @addtogroup VDPAU_Decoding
37  *
38  * @{
39  */
40
41 int ff_vdpau_common_start_frame(struct vdpau_picture_context *pic_ctx,
42                                 av_unused const uint8_t *buffer,
43                                 av_unused uint32_t size)
44 {
45     pic_ctx->bitstream_buffers_allocated = 0;
46     pic_ctx->bitstream_buffers_used      = 0;
47     pic_ctx->bitstream_buffers           = NULL;
48     return 0;
49 }
50
51 #if CONFIG_H263_VDPAU_HWACCEL  || CONFIG_MPEG1_VDPAU_HWACCEL || \
52     CONFIG_MPEG2_VDPAU_HWACCEL || CONFIG_MPEG4_VDPAU_HWACCEL || \
53     CONFIG_VC1_VDPAU_HWACCEL   || CONFIG_WMV3_VDPAU_HWACCEL
54 int ff_vdpau_mpeg_end_frame(AVCodecContext *avctx)
55 {
56     AVVDPAUContext *hwctx = avctx->hwaccel_context;
57     MpegEncContext *s = avctx->priv_data;
58     Picture *pic = s->current_picture_ptr;
59     struct vdpau_picture_context *pic_ctx = pic->hwaccel_picture_private;
60     VdpVideoSurface surf = ff_vdpau_get_surface_id(pic->f);
61
62     hwctx->render(hwctx->decoder, surf, (void *)&pic_ctx->info,
63                   pic_ctx->bitstream_buffers_used, pic_ctx->bitstream_buffers);
64
65     ff_mpeg_draw_horiz_band(s, 0, s->avctx->height);
66     av_freep(&pic_ctx->bitstream_buffers);
67
68     return 0;
69 }
70 #endif
71
72 int ff_vdpau_add_buffer(struct vdpau_picture_context *pic_ctx,
73                         const uint8_t *buf, uint32_t size)
74 {
75     VdpBitstreamBuffer *buffers = pic_ctx->bitstream_buffers;
76
77     buffers = av_fast_realloc(buffers, &pic_ctx->bitstream_buffers_allocated,
78                               (pic_ctx->bitstream_buffers_used + 1) * sizeof(*buffers));
79     if (!buffers)
80         return AVERROR(ENOMEM);
81
82     pic_ctx->bitstream_buffers = buffers;
83     buffers += pic_ctx->bitstream_buffers_used++;
84
85     buffers->struct_version  = VDP_BITSTREAM_BUFFER_VERSION;
86     buffers->bitstream       = buf;
87     buffers->bitstream_bytes = size;
88     return 0;
89 }
90
91 int av_vdpau_get_profile(AVCodecContext *avctx, VdpDecoderProfile *profile)
92 {
93 #define PROFILE(prof)       \
94 do {                        \
95     *profile = prof;        \
96     return 0;               \
97 } while (0)
98
99     switch (avctx->codec_id) {
100     case AV_CODEC_ID_MPEG1VIDEO:               PROFILE(VDP_DECODER_PROFILE_MPEG1);
101     case AV_CODEC_ID_MPEG2VIDEO:
102         switch (avctx->profile) {
103         case FF_PROFILE_MPEG2_MAIN:            PROFILE(VDP_DECODER_PROFILE_MPEG2_MAIN);
104         case FF_PROFILE_MPEG2_SIMPLE:          PROFILE(VDP_DECODER_PROFILE_MPEG2_SIMPLE);
105         default:                               return AVERROR(EINVAL);
106         }
107     case AV_CODEC_ID_H263:                     PROFILE(VDP_DECODER_PROFILE_MPEG4_PART2_ASP);
108     case AV_CODEC_ID_MPEG4:
109         switch (avctx->profile) {
110         case FF_PROFILE_MPEG4_SIMPLE:          PROFILE(VDP_DECODER_PROFILE_MPEG4_PART2_SP);
111         case FF_PROFILE_MPEG4_ADVANCED_SIMPLE: PROFILE(VDP_DECODER_PROFILE_MPEG4_PART2_ASP);
112         default:                               return AVERROR(EINVAL);
113         }
114     case AV_CODEC_ID_H264:
115         switch (avctx->profile & ~FF_PROFILE_H264_INTRA) {
116         case FF_PROFILE_H264_CONSTRAINED_BASELINE:
117         case FF_PROFILE_H264_BASELINE:         PROFILE(VDP_DECODER_PROFILE_H264_BASELINE);
118         case FF_PROFILE_H264_MAIN:             PROFILE(VDP_DECODER_PROFILE_H264_MAIN);
119         case FF_PROFILE_H264_HIGH:             PROFILE(VDP_DECODER_PROFILE_H264_HIGH);
120         default:                               return AVERROR(EINVAL);
121         }
122     case AV_CODEC_ID_WMV3:
123     case AV_CODEC_ID_VC1:
124         switch (avctx->profile) {
125         case FF_PROFILE_VC1_SIMPLE:            PROFILE(VDP_DECODER_PROFILE_VC1_SIMPLE);
126         case FF_PROFILE_VC1_MAIN:              PROFILE(VDP_DECODER_PROFILE_VC1_MAIN);
127         case FF_PROFILE_VC1_ADVANCED:          PROFILE(VDP_DECODER_PROFILE_VC1_ADVANCED);
128         default:                               return AVERROR(EINVAL);
129         }
130     }
131     return AVERROR(EINVAL);
132 }
133
134 AVVDPAUContext *av_vdpau_alloc_context(void)
135 {
136     return av_mallocz(sizeof(AVVDPAUContext));
137 }
138
139 /* @}*/