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5362 | serge | 1 | /* |
2 | * Copyright (c) 2007-2012 Intel Corporation. All Rights Reserved. |
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3 | * |
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4 | * Permission is hereby granted, free of charge, to any person obtaining a |
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5 | * copy of this software and associated documentation files (the |
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6 | * "Software"), to deal in the Software without restriction, including |
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7 | * without limitation the rights to use, copy, modify, merge, publish, |
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8 | * distribute, sub license, and/or sell copies of the Software, and to |
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9 | * permit persons to whom the Software is furnished to do so, subject to |
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10 | * the following conditions: |
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11 | * |
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12 | * The above copyright notice and this permission notice (including the |
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13 | * next paragraph) shall be included in all copies or substantial portions |
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14 | * of the Software. |
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15 | * |
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16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
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17 | * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
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18 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. |
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19 | * IN NO EVENT SHALL INTEL AND/OR ITS SUPPLIERS BE LIABLE FOR |
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20 | * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, |
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21 | * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE |
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22 | * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
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23 | */ |
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24 | |||
25 | /** |
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26 | * \file va_dec_vp.h |
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27 | * \brief VP8 decoding API |
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28 | * |
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29 | * This file contains the \ref api_dec_vp8 "VP8 decoding API". |
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30 | */ |
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31 | |||
32 | #ifndef VA_DEC_VP8_H |
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33 | #define VA_DEC_VP8_H |
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34 | |||
35 | #ifdef __cplusplus |
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36 | extern "C" { |
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37 | #endif |
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38 | |||
39 | /** |
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40 | * \defgroup api_dec_vp8 VP8 decoding API |
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41 | * |
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42 | * @{ |
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43 | */ |
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44 | |||
45 | /** |
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46 | * \brief VPX Bool Coder Context structure |
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47 | * |
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48 | * This common structure is defined for potential sharing by other VP formats |
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49 | * |
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50 | */ |
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51 | typedef struct _VABoolCoderContextVPX |
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52 | { |
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53 | /* partition 0 "range" */ |
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54 | unsigned char range; |
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55 | /* partition 0 "value" */ |
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56 | unsigned char value; |
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57 | /* |
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58 | * 'partition 0 number of shifts before an output byte is available' |
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59 | * it is the number of remaining bits in 'value' for decoding, range [0, 7]. |
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60 | */ |
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61 | |||
62 | unsigned char count; |
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63 | } VABoolCoderContextVPX; |
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64 | |||
65 | /** |
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66 | * \brief VP8 Decoding Picture Parameter Buffer Structure |
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67 | * |
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68 | * This structure conveys frame level parameters and should be sent once |
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69 | * per frame. |
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70 | * |
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71 | */ |
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72 | typedef struct _VAPictureParameterBufferVP8 |
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73 | { |
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74 | /* frame width in pixels */ |
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75 | unsigned int frame_width; |
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76 | /* frame height in pixels */ |
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77 | unsigned int frame_height; |
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78 | |||
79 | /* specifies the "last" reference frame */ |
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80 | VASurfaceID last_ref_frame; |
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81 | /* specifies the "golden" reference frame */ |
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82 | VASurfaceID golden_ref_frame; |
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83 | /* specifies the "alternate" referrence frame */ |
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84 | VASurfaceID alt_ref_frame; |
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85 | /* specifies the out-of-loop deblocked frame, not used currently */ |
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86 | VASurfaceID out_of_loop_frame; |
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87 | |||
88 | union { |
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89 | struct { |
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90 | /* same as key_frame in bitstream syntax, 0 means a key frame */ |
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91 | unsigned int key_frame : 1; |
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92 | /* same as version in bitstream syntax */ |
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93 | unsigned int version : 3; |
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94 | /* same as segmentation_enabled in bitstream syntax */ |
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95 | unsigned int segmentation_enabled : 1; |
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96 | /* same as update_mb_segmentation_map in bitstream syntax */ |
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97 | unsigned int update_mb_segmentation_map : 1; |
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98 | /* same as update_segment_feature_data in bitstream syntax */ |
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99 | unsigned int update_segment_feature_data : 1; |
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100 | /* same as filter_type in bitstream syntax */ |
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101 | unsigned int filter_type : 1; |
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102 | /* same as sharpness_level in bitstream syntax */ |
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103 | unsigned int sharpness_level : 3; |
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104 | /* same as loop_filter_adj_enable in bitstream syntax */ |
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105 | unsigned int loop_filter_adj_enable : 1; |
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106 | /* same as mode_ref_lf_delta_update in bitstream syntax */ |
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107 | unsigned int mode_ref_lf_delta_update : 1; |
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108 | /* same as sign_bias_golden in bitstream syntax */ |
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109 | unsigned int sign_bias_golden : 1; |
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110 | /* same as sign_bias_alternate in bitstream syntax */ |
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111 | unsigned int sign_bias_alternate : 1; |
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112 | /* same as mb_no_coeff_skip in bitstream syntax */ |
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113 | unsigned int mb_no_coeff_skip : 1; |
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114 | /* flag to indicate that loop filter should be disabled */ |
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115 | unsigned int loop_filter_disable : 1; |
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116 | } bits; |
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117 | unsigned int value; |
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118 | } pic_fields; |
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119 | |||
120 | /* |
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121 | * probabilities of the segment_id decoding tree and same as |
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122 | * mb_segment_tree_probs in the spec. |
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123 | */ |
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124 | unsigned char mb_segment_tree_probs[3]; |
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125 | |||
126 | /* Post-adjustment loop filter levels for the 4 segments */ |
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127 | unsigned char loop_filter_level[4]; |
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128 | /* loop filter deltas for reference frame based MB level adjustment */ |
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129 | char loop_filter_deltas_ref_frame[4]; |
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130 | /* loop filter deltas for coding mode based MB level adjustment */ |
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131 | char loop_filter_deltas_mode[4]; |
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132 | |||
133 | /* same as prob_skip_false in bitstream syntax */ |
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134 | unsigned char prob_skip_false; |
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135 | /* same as prob_intra in bitstream syntax */ |
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136 | unsigned char prob_intra; |
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137 | /* same as prob_last in bitstream syntax */ |
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138 | unsigned char prob_last; |
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139 | /* same as prob_gf in bitstream syntax */ |
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140 | unsigned char prob_gf; |
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141 | |||
142 | /* |
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143 | * list of 4 probabilities of the luma intra prediction mode decoding |
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144 | * tree and same as y_mode_probs in frame header |
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145 | */ |
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146 | unsigned char y_mode_probs[4]; |
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147 | /* |
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148 | * list of 3 probabilities of the chroma intra prediction mode decoding |
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149 | * tree and same as uv_mode_probs in frame header |
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150 | */ |
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151 | unsigned char uv_mode_probs[3]; |
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152 | /* |
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153 | * updated mv decoding probabilities and same as mv_probs in |
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154 | * frame header |
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155 | */ |
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156 | unsigned char mv_probs[2][19]; |
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157 | |||
158 | VABoolCoderContextVPX bool_coder_ctx; |
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159 | |||
160 | } VAPictureParameterBufferVP8; |
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161 | |||
162 | /** |
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163 | * \brief VP8 Slice Parameter Buffer Structure |
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164 | * |
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165 | * This structure conveys parameters related to data partitions and should be |
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166 | * sent once per frame. Slice data buffer of VASliceDataBufferType is used |
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167 | * to send the partition data. |
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168 | * |
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169 | */ |
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170 | typedef struct _VASliceParameterBufferVP8 |
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171 | { |
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172 | /* |
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173 | * number of bytes in the slice data buffer for the partitions |
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174 | */ |
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175 | unsigned int slice_data_size; |
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176 | /* |
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177 | * offset to the first byte of partition data (control partition) |
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178 | */ |
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179 | unsigned int slice_data_offset; |
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180 | /* |
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181 | * see VA_SLICE_DATA_FLAG_XXX definitions |
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182 | */ |
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183 | unsigned int slice_data_flag; |
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184 | /* |
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185 | * offset to the first bit of MB from the first byte of partition data(slice_data_offset) |
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186 | */ |
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187 | unsigned int macroblock_offset; |
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188 | |||
189 | /* |
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190 | * Partitions |
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191 | * (1< |
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192 | */ |
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193 | unsigned char num_of_partitions; |
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194 | /* |
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195 | * partition_size[0] is remaining bytes of control partition after parsed by application. |
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196 | * exclude current byte for the remaining bits in bool_coder_ctx. |
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197 | * exclude the uncompress data chunk since first_part_size 'excluding the uncompressed data chunk' |
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198 | */ |
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199 | unsigned int partition_size[9]; |
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200 | } VASliceParameterBufferVP8; |
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201 | |||
202 | /** |
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203 | * \brief VP8 Coefficient Probability Data Buffer Structure |
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204 | * |
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205 | * Contains the contents of the token probability table, which may be |
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206 | * incrementally modified in the frame header. There are four dimensions to |
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207 | * the token probability array. The outermost dimension is indexed by the |
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208 | * type of plane being decoded; the next dimension is selected by the |
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209 | * position of the coefficient being decoded; the third dimension, * roughly |
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210 | * speaking, measures the "local complexity" or extent to which nearby |
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211 | * coefficients are non-zero; the fourth, and final, dimension of the token |
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212 | * probability array is indexed by the position in the token tree structure, |
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213 | * as are all tree probability arrays. This structure is sent once per frame. |
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214 | * |
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215 | */ |
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216 | typedef struct _VAProbabilityDataBufferVP8 |
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217 | { |
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218 | unsigned char dct_coeff_probs[4][8][3][11]; |
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219 | } VAProbabilityDataBufferVP8; |
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220 | |||
221 | /** |
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222 | * \brief VP8 Inverse Quantization Matrix Buffer Structure |
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223 | * |
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224 | * Contains quantization indices for yac(0),ydc(1),y2dc(2),y2ac(3),uvdc(4), |
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225 | * uvac(5) for each segment (0-3). When segmentation is disabled, only |
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226 | * quantization_index[0][] will be used. This structure is sent once per frame. |
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227 | */ |
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228 | typedef struct _VAIQMatrixBufferVP8 |
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229 | { |
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230 | /* |
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231 | * array first dimensional is segment and 2nd dimensional is Q index |
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232 | * all Q indexs should be clipped to be range [0, 127] |
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233 | */ |
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234 | unsigned short quantization_index[4][6]; |
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235 | } VAIQMatrixBufferVP8; |
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236 | |||
237 | /**@}*/ |
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238 | |||
239 | #ifdef __cplusplus |
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240 | } |
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241 | #endif |
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242 | |||
243 | #endif /* VA_DEC_VP8_H */ |