| 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 */ |