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 Libav.
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.
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.
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
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 Libav
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>
56 union AVVDPAUPictureInfo {
57 VdpPictureInfoH264 h264;
58 VdpPictureInfoMPEG1Or2 mpeg;
59 VdpPictureInfoVC1 vc1;
60 VdpPictureInfoMPEG4Part2 mpeg4;
65 * This structure is used to share data between the libavcodec library and
66 * the client video application.
67 * The user shall zero-allocate the structure and make it available as
68 * AVCodecContext.hwaccel_context. Members can be set by the user once
69 * during initialization or through each AVCodecContext.get_buffer()
70 * function call. In any case, they must be valid prior to calling
73 typedef struct AVVDPAUContext {
75 * VDPAU decoder handle
82 * VDPAU decoder render callback
86 VdpDecoderRender *render;
90 * VDPAU picture information
95 union AVVDPAUPictureInfo info;
98 * Allocated size of the bitstream_buffers table.
103 int bitstream_buffers_allocated;
106 * Useful bitstream buffers in the bitstream buffers table.
111 int bitstream_buffers_used;
114 * Table of bitstream buffers.
115 * The user is responsible for freeing this buffer using av_freep().
120 VdpBitstreamBuffer *bitstream_buffers;
125 /** @brief The videoSurface is used for rendering. */
126 #define FF_VDPAU_STATE_USED_FOR_RENDER 1
129 * @brief The videoSurface is needed for reference/prediction.
130 * The codec manipulates this.
132 #define FF_VDPAU_STATE_USED_FOR_REFERENCE 2
135 * @brief This structure is used as a callback between the Libav
136 * decoder (vd_) and presentation (vo_) module.
137 * This is used for defining a video frame containing surface,
138 * picture parameter, bitstream information etc which are passed
139 * between the Libav decoder and its clients.
141 struct vdpau_render_state {
142 VdpVideoSurface surface; ///< Used as rendered surface, never changed.
144 int state; ///< Holds FF_VDPAU_STATE_* values.
146 /** picture parameter information for all supported codecs */
147 union AVVDPAUPictureInfo info;
149 /** Describe size/location of the compressed video data.
150 Set to 0 when freeing bitstream_buffers. */
151 int bitstream_buffers_allocated;
152 int bitstream_buffers_used;
153 /** The user is responsible for freeing this buffer using av_freep(). */
154 VdpBitstreamBuffer *bitstream_buffers;
160 #endif /* AVCODEC_VDPAU_H */