vaapi.h (3889B)
1 /* 2 * Video Acceleration API (shared data between Libav and the video player) 3 * HW decode acceleration for MPEG-2, MPEG-4, H.264 and VC-1 4 * 5 * Copyright (C) 2008-2009 Splitted-Desktop Systems 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_VAAPI_H 25 #define AVCODEC_VAAPI_H 26 27 #include <stdint.h> 28 29 /** 30 * @defgroup VAAPI_Decoding VA API Decoding 31 * @ingroup Decoder 32 * @{ 33 */ 34 35 /** 36 * This structure is used to share data between the Libav library and 37 * the client video application. 38 * This shall be zero-allocated and available as 39 * AVCodecContext.hwaccel_context. All user members can be set once 40 * during initialization or through each AVCodecContext.get_buffer() 41 * function call. In any case, they must be valid prior to calling 42 * decoding functions. 43 */ 44 struct vaapi_context { 45 /** 46 * Window system dependent data 47 * 48 * - encoding: unused 49 * - decoding: Set by user 50 */ 51 void *display; 52 53 /** 54 * Configuration ID 55 * 56 * - encoding: unused 57 * - decoding: Set by user 58 */ 59 uint32_t config_id; 60 61 /** 62 * Context ID (video decode pipeline) 63 * 64 * - encoding: unused 65 * - decoding: Set by user 66 */ 67 uint32_t context_id; 68 69 /** 70 * VAPictureParameterBuffer ID 71 * 72 * - encoding: unused 73 * - decoding: Set by libavcodec 74 */ 75 uint32_t pic_param_buf_id; 76 77 /** 78 * VAIQMatrixBuffer ID 79 * 80 * - encoding: unused 81 * - decoding: Set by libavcodec 82 */ 83 uint32_t iq_matrix_buf_id; 84 85 /** 86 * VABitPlaneBuffer ID (for VC-1 decoding) 87 * 88 * - encoding: unused 89 * - decoding: Set by libavcodec 90 */ 91 uint32_t bitplane_buf_id; 92 93 /** 94 * Slice parameter/data buffer IDs 95 * 96 * - encoding: unused 97 * - decoding: Set by libavcodec 98 */ 99 uint32_t *slice_buf_ids; 100 101 /** 102 * Number of effective slice buffer IDs to send to the HW 103 * 104 * - encoding: unused 105 * - decoding: Set by libavcodec 106 */ 107 unsigned int n_slice_buf_ids; 108 109 /** 110 * Size of pre-allocated slice_buf_ids 111 * 112 * - encoding: unused 113 * - decoding: Set by libavcodec 114 */ 115 unsigned int slice_buf_ids_alloc; 116 117 /** 118 * Pointer to VASliceParameterBuffers 119 * 120 * - encoding: unused 121 * - decoding: Set by libavcodec 122 */ 123 void *slice_params; 124 125 /** 126 * Size of a VASliceParameterBuffer element 127 * 128 * - encoding: unused 129 * - decoding: Set by libavcodec 130 */ 131 unsigned int slice_param_size; 132 133 /** 134 * Size of pre-allocated slice_params 135 * 136 * - encoding: unused 137 * - decoding: Set by libavcodec 138 */ 139 unsigned int slice_params_alloc; 140 141 /** 142 * Number of slices currently filled in 143 * 144 * - encoding: unused 145 * - decoding: Set by libavcodec 146 */ 147 unsigned int slice_count; 148 149 /** 150 * Pointer to slice data buffer base 151 * - encoding: unused 152 * - decoding: Set by libavcodec 153 */ 154 const uint8_t *slice_data; 155 156 /** 157 * Current size of slice data 158 * 159 * - encoding: unused 160 * - decoding: Set by libavcodec 161 */ 162 uint32_t slice_data_size; 163 }; 164 165 /* @} */ 166 167 #endif /* AVCODEC_VAAPI_H */