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.
5 * Copyright (C) 2008 NVIDIA
7 * This file is part of FFmpeg.
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.
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.
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
24 #ifndef AVCODEC_VDPAU_H
25 #define AVCODEC_VDPAU_H
29 * @ingroup lavc_codec_hwaccel_vdpau
30 * Public libavcodec VDPAU header.
35 * @defgroup lavc_codec_hwaccel_vdpau VDPAU Decoder and Renderer
36 * @ingroup lavc_codec_hwaccel
38 * VDPAU hardware acceleration has two modules
40 * - VDPAU presentation
42 * The VDPAU decoding module parses all headers using FFmpeg
43 * parsing mechanisms and uses VDPAU for the actual decoding.
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.
52 #include <vdpau/vdpau.h>
53 #include <vdpau/vdpau_x11.h>
55 union FFVdpPictureInfo {
56 VdpPictureInfoH264 h264;
57 VdpPictureInfoMPEG1Or2 mpeg;
58 VdpPictureInfoVC1 vc1;
59 VdpPictureInfoMPEG4Part2 mpeg4;
63 * This structure is used to share data between the libavcodec library and
64 * the client video application.
65 * The user shall zero-allocate the structure and make it available as
66 * AVCodecContext.hwaccel_context. Members can be set by the user once
67 * during initialization or through each AVCodecContext.get_buffer()
68 * function call. In any case, they must be valid prior to calling
71 typedef struct AVVDPAUContext {
73 * VDPAU decoder handle
80 * VDPAU decoder render callback
84 VdpDecoderRender *render;
87 * VDPAU picture information
91 union FFVdpPictureInfo info;
94 * Allocated size of the bitstream_buffers table.
98 int bitstream_buffers_allocated;
101 * Useful bitstream buffers in the bitstream buffers table.
105 int bitstream_buffers_used;
108 * Table of bitstream buffers.
109 * The user is responsible for freeing this buffer using av_freep().
113 VdpBitstreamBuffer *bitstream_buffers;
117 /** @brief The videoSurface is used for rendering. */
118 #define FF_VDPAU_STATE_USED_FOR_RENDER 1
121 * @brief The videoSurface is needed for reference/prediction.
122 * The codec manipulates this.
124 #define FF_VDPAU_STATE_USED_FOR_REFERENCE 2
127 * @brief This structure is used as a callback between the FFmpeg
128 * decoder (vd_) and presentation (vo_) module.
129 * This is used for defining a video frame containing surface,
130 * picture parameter, bitstream information etc which are passed
131 * between the FFmpeg decoder and its clients.
133 struct vdpau_render_state {
134 VdpVideoSurface surface; ///< Used as rendered surface, never changed.
136 int state; ///< Holds FF_VDPAU_STATE_* values.
138 /** Describe size/location of the compressed video data.
139 Set to 0 when freeing bitstream_buffers. */
140 int bitstream_buffers_allocated;
141 int bitstream_buffers_used;
142 /** The user is responsible for freeing this buffer using av_freep(). */
143 VdpBitstreamBuffer *bitstream_buffers;
145 /** picture parameter information for all supported codecs */
146 union FFVdpPictureInfo info;
151 #endif /* AVCODEC_VDPAU_H */