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 * \defgroup Decoder VDPAU Decoder and Renderer
29 *
30 * VDPAU hardware acceleration has two modules
31 * - VDPAU decoding
32 * - VDPAU presentation
33 *
34 * The VDPAU decoding module parses all headers using FFmpeg
35 * parsing mechanisms and uses VDPAU for the actual decoding.
36 *
37 * As per the current implementation, the actual decoding
38 * and rendering (API calls) are done as part of the VDPAU
39 * presentation (vo_vdpau.c) module.
40 *
41 * @{
42 * \defgroup  VDPAU_Decoding VDPAU Decoding
43 * \ingroup Decoder
44 * @{
45 */
46
47#include <vdpau/vdpau.h>
48#include <vdpau/vdpau_x11.h>
49
50/** \brief The videoSurface is used for rendering. */
51#define FF_VDPAU_STATE_USED_FOR_RENDER 1
52
53/**
54 * \brief The videoSurface is needed for reference/prediction.
55 * The codec manipulates this.
56 */
57#define FF_VDPAU_STATE_USED_FOR_REFERENCE 2
58
59/**
60 * \brief This structure is used as a callback between the FFmpeg
61 * decoder (vd_) and presentation (vo_) module.
62 * This is used for defining a video frame containing surface,
63 * picture parameter, bitstream information etc which are passed
64 * between the FFmpeg decoder and its clients.
65 */
66struct vdpau_render_state {
67    VdpVideoSurface surface; ///< Used as rendered surface, never changed.
68
69    int state; ///< Holds FF_VDPAU_STATE_* values.
70
71    /** picture parameter information for all supported codecs */
72    union VdpPictureInfo {
73        VdpPictureInfoH264        h264;
74        VdpPictureInfoMPEG1Or2    mpeg;
75        VdpPictureInfoVC1          vc1;
76        VdpPictureInfoMPEG4Part2 mpeg4;
77    } info;
78
79    /** Describe size/location of the compressed video data.
80        Set to 0 when freeing bitstream_buffers. */
81    int bitstream_buffers_allocated;
82    int bitstream_buffers_used;
83    /** The user is responsible for freeing this buffer using av_freep(). */
84    VdpBitstreamBuffer *bitstream_buffers;
85};
86
87/* @}*/
88
89#endif /* AVCODEC_VDPAU_H */
90