summaryrefslogtreecommitdiffstats
path: root/libavcodec/vdpau.h
blob: b1c836c4b67e2d32c27dba1974498f59cdfdb88f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
/*
 * The Video Decode and Presentation API for UNIX (VDPAU) is used for
 * hardware-accelerated decoding of MPEG-1/2, H.264 and VC-1.
 *
 * Copyright (C) 2008 NVIDIA
 *
 * This file is part of FFmpeg.
 *
 * FFmpeg is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * FFmpeg is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with FFmpeg; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

#ifndef AVCODEC_VDPAU_H
#define AVCODEC_VDPAU_H

/**
 * @file
 * @ingroup lavc_codec_hwaccel_vdpau
 * Public libavcodec VDPAU header.
 */


/**
 * @defgroup lavc_codec_hwaccel_vdpau VDPAU Decoder and Renderer
 * @ingroup lavc_codec_hwaccel
 *
 * VDPAU hardware acceleration has two modules
 * - VDPAU decoding
 * - VDPAU presentation
 *
 * The VDPAU decoding module parses all headers using FFmpeg
 * parsing mechanisms and uses VDPAU for the actual decoding.
 *
 * As per the current implementation, the actual decoding
 * and rendering (API calls) are done as part of the VDPAU
 * presentation (vo_vdpau.c) module.
 *
 * @{
 */

#include <vdpau/vdpau.h>
#include <vdpau/vdpau_x11.h>
#include "libavutil/avconfig.h"
#include "libavutil/attributes.h"

#ifndef FF_API_CAP_VDPAU
#define FF_API_CAP_VDPAU 1
#endif
#ifndef FF_API_BUFS_VDPAU
#define FF_API_BUFS_VDPAU 1
#endif

#if FF_API_BUFS_VDPAU
union AVVDPAUPictureInfo {
    VdpPictureInfoH264        h264;
    VdpPictureInfoMPEG1Or2    mpeg;
    VdpPictureInfoVC1          vc1;
    VdpPictureInfoMPEG4Part2 mpeg4;
};
#endif

struct AVCodecContext;
struct AVFrame;

typedef int (*AVVDPAU_Render2)(struct AVCodecContext *, struct AVFrame *,
                               const VdpPictureInfo *, uint32_t,
                               const VdpBitstreamBuffer *);

/**
 * This structure is used to share data between the libavcodec library and
 * the client video application.
 * The user shall allocate the structure via the av_alloc_vdpau_hwaccel
 * function and make it available as
 * AVCodecContext.hwaccel_context. Members can be set by the user once
 * during initialization or through each AVCodecContext.get_buffer()
 * function call. In any case, they must be valid prior to calling
 * decoding functions.
 */
typedef struct AVVDPAUContext {
    /**
     * VDPAU decoder handle
     *
     * Set by user.
     */
    VdpDecoder decoder;

    /**
     * VDPAU decoder render callback
     *
     * Set by the user.
     */
    VdpDecoderRender *render;

#if FF_API_BUFS_VDPAU
    /**
     * VDPAU picture information
     *
     * Set by libavcodec.
     */
    attribute_deprecated
    union AVVDPAUPictureInfo info;

    /**
     * Allocated size of the bitstream_buffers table.
     *
     * Set by libavcodec.
     */
    attribute_deprecated
    int bitstream_buffers_allocated;

    /**
     * Useful bitstream buffers in the bitstream buffers table.
     *
     * Set by libavcodec.
     */
    attribute_deprecated
    int bitstream_buffers_used;

   /**
     * Table of bitstream buffers.
     * The user is responsible for freeing this buffer using av_freep().
     *
     * Set by libavcodec.
     */
    attribute_deprecated
    VdpBitstreamBuffer *bitstream_buffers;
#endif
    AVVDPAU_Render2 render2;
} AVVDPAUContext;

/**
 * @brief allocation function for AVVDPAUContext
 *
 * Allows extending the struct without breaking API/ABI
 */
AVVDPAUContext *av_alloc_vdpaucontext(void);

AVVDPAU_Render2 av_vdpau_hwaccel_get_render2(const AVVDPAUContext *);
void av_vdpau_hwaccel_set_render2(AVVDPAUContext *, AVVDPAU_Render2);

#if FF_API_CAP_VDPAU
/** @brief The videoSurface is used for rendering. */
#define FF_VDPAU_STATE_USED_FOR_RENDER 1

/**
 * @brief The videoSurface is needed for reference/prediction.
 * The codec manipulates this.
 */
#define FF_VDPAU_STATE_USED_FOR_REFERENCE 2

/**
 * @brief This structure is used as a callback between the FFmpeg
 * decoder (vd_) and presentation (vo_) module.
 * This is used for defining a video frame containing surface,
 * picture parameter, bitstream information etc which are passed
 * between the FFmpeg decoder and its clients.
 */
struct vdpau_render_state {
    VdpVideoSurface surface; ///< Used as rendered surface, never changed.

    int state; ///< Holds FF_VDPAU_STATE_* values.

#if AV_HAVE_INCOMPATIBLE_LIBAV_ABI
    /** picture parameter information for all supported codecs */
    union AVVDPAUPictureInfo info;
#endif

    /** Describe size/location of the compressed video data.
        Set to 0 when freeing bitstream_buffers. */
    int bitstream_buffers_allocated;
    int bitstream_buffers_used;
    /** The user is responsible for freeing this buffer using av_freep(). */
    VdpBitstreamBuffer *bitstream_buffers;

#if !AV_HAVE_INCOMPATIBLE_LIBAV_ABI
    /** picture parameter information for all supported codecs */
    union AVVDPAUPictureInfo info;
#endif
};
#endif

/* @}*/

#endif /* AVCODEC_VDPAU_H */
OpenPOWER on IntegriCloud