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