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2134
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1 /*
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2 * Video Acceleration API (shared data between FFmpeg and the video player)
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3 * HW decode acceleration for MPEG-2, MPEG-4, H.264 and VC-1
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4 *
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5 * Copyright (C) 2008-2009 Splitted-Desktop Systems
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6 *
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7 * This file is part of FFmpeg.
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8 *
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9 * FFmpeg is free software; you can redistribute it and/or
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10 * modify it under the terms of the GNU Lesser General Public
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11 * License as published by the Free Software Foundation; either
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12 * version 2.1 of the License, or (at your option) any later version.
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13 *
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14 * FFmpeg is distributed in the hope that it will be useful,
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15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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17 * Lesser General Public License for more details.
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18 *
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19 * You should have received a copy of the GNU Lesser General Public
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20 * License along with FFmpeg; if not, write to the Free Software
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21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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22 */
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23
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24 #ifndef AVCODEC_VAAPI_H
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25 #define AVCODEC_VAAPI_H
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26
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27 /**
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28 * @file
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29 * @ingroup lavc_codec_hwaccel_vaapi
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30 * Public libavcodec VA API header.
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31 */
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32
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33 #include <stdint.h>
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34
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35 /**
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36 * @defgroup lavc_codec_hwaccel_vaapi VA API Decoding
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37 * @ingroup lavc_codec_hwaccel
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38 * @{
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39 */
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40
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41 /**
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42 * This structure is used to share data between the FFmpeg library and
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43 * the client video application.
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44 * This shall be zero-allocated and available as
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45 * AVCodecContext.hwaccel_context. All user members can be set once
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46 * during initialization or through each AVCodecContext.get_buffer()
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47 * function call. In any case, they must be valid prior to calling
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48 * decoding functions.
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49 */
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50 struct vaapi_context {
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51 /**
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52 * Window system dependent data
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53 *
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54 * - encoding: unused
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55 * - decoding: Set by user
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56 */
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57 void *display;
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58
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59 /**
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60 * Configuration ID
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61 *
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62 * - encoding: unused
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63 * - decoding: Set by user
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64 */
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65 uint32_t config_id;
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66
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67 /**
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68 * Context ID (video decode pipeline)
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69 *
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70 * - encoding: unused
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71 * - decoding: Set by user
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72 */
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73 uint32_t context_id;
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74
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75 /**
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76 * VAPictureParameterBuffer ID
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77 *
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78 * - encoding: unused
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79 * - decoding: Set by libavcodec
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80 */
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81 uint32_t pic_param_buf_id;
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82
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83 /**
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84 * VAIQMatrixBuffer ID
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85 *
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86 * - encoding: unused
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87 * - decoding: Set by libavcodec
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88 */
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89 uint32_t iq_matrix_buf_id;
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90
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91 /**
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92 * VABitPlaneBuffer ID (for VC-1 decoding)
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93 *
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94 * - encoding: unused
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95 * - decoding: Set by libavcodec
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96 */
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97 uint32_t bitplane_buf_id;
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98
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99 /**
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100 * Slice parameter/data buffer IDs
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101 *
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102 * - encoding: unused
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103 * - decoding: Set by libavcodec
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104 */
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105 uint32_t *slice_buf_ids;
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106
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107 /**
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108 * Number of effective slice buffer IDs to send to the HW
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109 *
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110 * - encoding: unused
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111 * - decoding: Set by libavcodec
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112 */
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113 unsigned int n_slice_buf_ids;
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114
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115 /**
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116 * Size of pre-allocated slice_buf_ids
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117 *
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118 * - encoding: unused
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119 * - decoding: Set by libavcodec
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120 */
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121 unsigned int slice_buf_ids_alloc;
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122
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123 /**
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124 * Pointer to VASliceParameterBuffers
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125 *
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126 * - encoding: unused
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127 * - decoding: Set by libavcodec
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128 */
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129 void *slice_params;
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130
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131 /**
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132 * Size of a VASliceParameterBuffer element
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133 *
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134 * - encoding: unused
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135 * - decoding: Set by libavcodec
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136 */
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137 unsigned int slice_param_size;
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138
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139 /**
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140 * Size of pre-allocated slice_params
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141 *
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142 * - encoding: unused
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143 * - decoding: Set by libavcodec
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144 */
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145 unsigned int slice_params_alloc;
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146
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147 /**
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148 * Number of slices currently filled in
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149 *
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150 * - encoding: unused
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151 * - decoding: Set by libavcodec
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152 */
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153 unsigned int slice_count;
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154
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155 /**
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156 * Pointer to slice data buffer base
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157 * - encoding: unused
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158 * - decoding: Set by libavcodec
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159 */
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160 const uint8_t *slice_data;
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161
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162 /**
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163 * Current size of slice data
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164 *
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165 * - encoding: unused
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166 * - decoding: Set by libavcodec
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167 */
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168 uint32_t slice_data_size;
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169 };
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170
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171 /* @} */
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172
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173 #endif /* AVCODEC_VAAPI_H */
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