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vdpau.h
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1 /*
2  * The Video Decode and Presentation API for UNIX (VDPAU) is used for
3  * hardware-accelerated decoding of MPEG-1/2, 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 #ifndef AVCODEC_VDPAU_H
25 #define AVCODEC_VDPAU_H
26 
27 /**
28  * @file
29  * @ingroup lavc_codec_hwaccel_vdpau
30  * Public libavcodec VDPAU header.
31  */
32 
33 
34 /**
35  * @defgroup lavc_codec_hwaccel_vdpau VDPAU Decoder and Renderer
36  * @ingroup lavc_codec_hwaccel
37  *
38  * VDPAU hardware acceleration has two modules
39  * - VDPAU decoding
40  * - VDPAU presentation
41  *
42  * The VDPAU decoding module parses all headers using FFmpeg
43  * parsing mechanisms and uses VDPAU for the actual decoding.
44  *
45  * As per the current implementation, the actual decoding
46  * and rendering (API calls) are done as part of the VDPAU
47  * presentation (vo_vdpau.c) module.
48  *
49  * @{
50  */
51 
52 #include <vdpau/vdpau.h>
53 #include <vdpau/vdpau_x11.h>
54 
55 /** @brief The videoSurface is used for rendering. */
56 #define FF_VDPAU_STATE_USED_FOR_RENDER 1
57 
58 /**
59  * @brief The videoSurface is needed for reference/prediction.
60  * The codec manipulates this.
61  */
62 #define FF_VDPAU_STATE_USED_FOR_REFERENCE 2
63 
64 /**
65  * @brief This structure is used as a callback between the FFmpeg
66  * decoder (vd_) and presentation (vo_) module.
67  * This is used for defining a video frame containing surface,
68  * picture parameter, bitstream information etc which are passed
69  * between the FFmpeg decoder and its clients.
70  */
72  VdpVideoSurface surface; ///< Used as rendered surface, never changed.
73 
74  int state; ///< Holds FF_VDPAU_STATE_* values.
75 
76  /** Describe size/location of the compressed video data.
77  Set to 0 when freeing bitstream_buffers. */
80  /** The user is responsible for freeing this buffer using av_freep(). */
81  VdpBitstreamBuffer *bitstream_buffers;
82 
83  /** picture parameter information for all supported codecs */
85  VdpPictureInfoH264 h264;
86  VdpPictureInfoMPEG1Or2 mpeg;
87  VdpPictureInfoVC1 vc1;
88  VdpPictureInfoMPEG4Part2 mpeg4;
89  } info;
90 };
91 
92 /* @}*/
93 
94 #endif /* AVCODEC_VDPAU_H */