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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 | * @file | |
29 | * @ingroup lavc_codec_hwaccel_vdpau | |
30 | * Public libavcodec VDPAU header. | |
31 | */ | |
32 | ||
33 | ||
34 | /** | |
35 | * @defgroup lavc_codec_hwaccel_vdpau VDPAU Decoder and Renderer | |
36 | * @ingroup lavc_codec_hwaccel | |
37 | * | |
38 | * VDPAU hardware acceleration has two modules | |
39 | * - VDPAU decoding | |
40 | * - VDPAU presentation | |
41 | * | |
42 | * The VDPAU decoding module parses all headers using FFmpeg | |
43 | * parsing mechanisms and uses VDPAU for the actual decoding. | |
44 | * | |
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. | |
48 | * | |
49 | * @{ | |
50 | */ | |
51 | ||
52 | #include <vdpau/vdpau.h> | |
53 | #include <vdpau/vdpau_x11.h> | |
54 | #include "libavutil/avconfig.h" | |
55 | #include "libavutil/attributes.h" | |
56 | ||
57 | #include "avcodec.h" | |
58 | #include "version.h" | |
59 | ||
60 | #if FF_API_BUFS_VDPAU | |
61 | union AVVDPAUPictureInfo { | |
62 | VdpPictureInfoH264 h264; | |
63 | VdpPictureInfoMPEG1Or2 mpeg; | |
64 | VdpPictureInfoVC1 vc1; | |
65 | VdpPictureInfoMPEG4Part2 mpeg4; | |
66 | }; | |
67 | #endif | |
68 | ||
69 | struct AVCodecContext; | |
70 | struct AVFrame; | |
71 | ||
72 | typedef int (*AVVDPAU_Render2)(struct AVCodecContext *, struct AVFrame *, | |
73 | const VdpPictureInfo *, uint32_t, | |
74 | const VdpBitstreamBuffer *); | |
75 | ||
76 | /** | |
77 | * This structure is used to share data between the libavcodec library and | |
78 | * the client video application. | |
79 | * The user shall allocate the structure via the av_alloc_vdpau_hwaccel | |
80 | * function and make it available as | |
81 | * AVCodecContext.hwaccel_context. Members can be set by the user once | |
82 | * during initialization or through each AVCodecContext.get_buffer() | |
83 | * function call. In any case, they must be valid prior to calling | |
84 | * decoding functions. | |
85 | * | |
86 | * The size of this structure is not a part of the public ABI and must not | |
87 | * be used outside of libavcodec. Use av_vdpau_alloc_context() to allocate an | |
88 | * AVVDPAUContext. | |
89 | */ | |
90 | typedef struct AVVDPAUContext { | |
91 | /** | |
92 | * VDPAU decoder handle | |
93 | * | |
94 | * Set by user. | |
95 | */ | |
96 | VdpDecoder decoder; | |
97 | ||
98 | /** | |
99 | * VDPAU decoder render callback | |
100 | * | |
101 | * Set by the user. | |
102 | */ | |
103 | VdpDecoderRender *render; | |
104 | ||
105 | #if FF_API_BUFS_VDPAU | |
106 | /** | |
107 | * VDPAU picture information | |
108 | * | |
109 | * Set by libavcodec. | |
110 | */ | |
111 | attribute_deprecated | |
112 | union AVVDPAUPictureInfo info; | |
113 | ||
114 | /** | |
115 | * Allocated size of the bitstream_buffers table. | |
116 | * | |
117 | * Set by libavcodec. | |
118 | */ | |
119 | attribute_deprecated | |
120 | int bitstream_buffers_allocated; | |
121 | ||
122 | /** | |
123 | * Useful bitstream buffers in the bitstream buffers table. | |
124 | * | |
125 | * Set by libavcodec. | |
126 | */ | |
127 | attribute_deprecated | |
128 | int bitstream_buffers_used; | |
129 | ||
130 | /** | |
131 | * Table of bitstream buffers. | |
132 | * The user is responsible for freeing this buffer using av_freep(). | |
133 | * | |
134 | * Set by libavcodec. | |
135 | */ | |
136 | attribute_deprecated | |
137 | VdpBitstreamBuffer *bitstream_buffers; | |
138 | #endif | |
139 | AVVDPAU_Render2 render2; | |
140 | } AVVDPAUContext; | |
141 | ||
142 | /** | |
143 | * @brief allocation function for AVVDPAUContext | |
144 | * | |
145 | * Allows extending the struct without breaking API/ABI | |
146 | */ | |
147 | AVVDPAUContext *av_alloc_vdpaucontext(void); | |
148 | ||
149 | AVVDPAU_Render2 av_vdpau_hwaccel_get_render2(const AVVDPAUContext *); | |
150 | void av_vdpau_hwaccel_set_render2(AVVDPAUContext *, AVVDPAU_Render2); | |
151 | ||
152 | /** | |
153 | * Allocate an AVVDPAUContext. | |
154 | * | |
155 | * @return Newly-allocated AVVDPAUContext or NULL on failure. | |
156 | */ | |
157 | AVVDPAUContext *av_vdpau_alloc_context(void); | |
158 | ||
159 | /** | |
160 | * Get a decoder profile that should be used for initializing a VDPAU decoder. | |
161 | * Should be called from the AVCodecContext.get_format() callback. | |
162 | * | |
163 | * @param avctx the codec context being used for decoding the stream | |
164 | * @param profile a pointer into which the result will be written on success. | |
165 | * The contents of profile are undefined if this function returns | |
166 | * an error. | |
167 | * | |
168 | * @return 0 on success (non-negative), a negative AVERROR on failure. | |
169 | */ | |
170 | int av_vdpau_get_profile(AVCodecContext *avctx, VdpDecoderProfile *profile); | |
171 | ||
172 | #if FF_API_CAP_VDPAU | |
173 | /** @brief The videoSurface is used for rendering. */ | |
174 | #define FF_VDPAU_STATE_USED_FOR_RENDER 1 | |
175 | ||
176 | /** | |
177 | * @brief The videoSurface is needed for reference/prediction. | |
178 | * The codec manipulates this. | |
179 | */ | |
180 | #define FF_VDPAU_STATE_USED_FOR_REFERENCE 2 | |
181 | ||
182 | /** | |
183 | * @brief This structure is used as a callback between the FFmpeg | |
184 | * decoder (vd_) and presentation (vo_) module. | |
185 | * This is used for defining a video frame containing surface, | |
186 | * picture parameter, bitstream information etc which are passed | |
187 | * between the FFmpeg decoder and its clients. | |
188 | */ | |
189 | struct vdpau_render_state { | |
190 | VdpVideoSurface surface; ///< Used as rendered surface, never changed. | |
191 | ||
192 | int state; ///< Holds FF_VDPAU_STATE_* values. | |
193 | ||
194 | #if AV_HAVE_INCOMPATIBLE_LIBAV_ABI | |
195 | /** picture parameter information for all supported codecs */ | |
196 | union AVVDPAUPictureInfo info; | |
197 | #endif | |
198 | ||
199 | /** Describe size/location of the compressed video data. | |
200 | Set to 0 when freeing bitstream_buffers. */ | |
201 | int bitstream_buffers_allocated; | |
202 | int bitstream_buffers_used; | |
203 | /** The user is responsible for freeing this buffer using av_freep(). */ | |
204 | VdpBitstreamBuffer *bitstream_buffers; | |
205 | ||
206 | #if !AV_HAVE_INCOMPATIBLE_LIBAV_ABI | |
207 | /** picture parameter information for all supported codecs */ | |
208 | union AVVDPAUPictureInfo info; | |
209 | #endif | |
210 | }; | |
211 | #endif | |
212 | ||
213 | /* @}*/ | |
214 | ||
215 | #endif /* AVCODEC_VDPAU_H */ |