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6148 | serge | 1 | /* |
2 | * Copyright (c) 2003 The FFmpeg Project |
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3 | * |
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4 | * This file is part of FFmpeg. |
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5 | * |
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6 | * FFmpeg is free software; you can redistribute it and/or |
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7 | * modify it under the terms of the GNU Lesser General Public |
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8 | * License as published by the Free Software Foundation; either |
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9 | * version 2.1 of the License, or (at your option) any later version. |
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10 | * |
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11 | * FFmpeg is distributed in the hope that it will be useful, |
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12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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14 | * Lesser General Public License for more details. |
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15 | * |
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16 | * You should have received a copy of the GNU Lesser General Public |
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17 | * License along with FFmpeg; if not, write to the Free Software |
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18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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19 | */ |
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20 | |||
21 | /* |
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22 | * How to use this decoder: |
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23 | * SVQ3 data is transported within Apple Quicktime files. Quicktime files |
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24 | * have stsd atoms to describe media trak properties. A stsd atom for a |
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25 | * video trak contains 1 or more ImageDescription atoms. These atoms begin |
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26 | * with the 4-byte length of the atom followed by the codec fourcc. Some |
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27 | * decoders need information in this atom to operate correctly. Such |
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28 | * is the case with SVQ3. In order to get the best use out of this decoder, |
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29 | * the calling app must make the SVQ3 ImageDescription atom available |
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30 | * via the AVCodecContext's extradata[_size] field: |
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31 | * |
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32 | * AVCodecContext.extradata = pointer to ImageDescription, first characters |
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33 | * are expected to be 'S', 'V', 'Q', and '3', NOT the 4-byte atom length |
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34 | * AVCodecContext.extradata_size = size of ImageDescription atom memory |
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35 | * buffer (which will be the same as the ImageDescription atom size field |
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36 | * from the QT file, minus 4 bytes since the length is missing) |
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37 | * |
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38 | * You will know you have these parameters passed correctly when the decoder |
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39 | * correctly decodes this file: |
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40 | * http://samples.mplayerhq.hu/V-codecs/SVQ3/Vertical400kbit.sorenson3.mov |
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41 | */ |
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42 | |||
43 | #include "libavutil/attributes.h" |
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44 | #include "internal.h" |
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45 | #include "avcodec.h" |
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46 | #include "mpegvideo.h" |
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47 | #include "h264.h" |
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48 | |||
49 | #include "h264data.h" // FIXME FIXME FIXME |
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50 | |||
51 | #include "h264_mvpred.h" |
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52 | #include "golomb.h" |
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53 | #include "hpeldsp.h" |
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54 | #include "rectangle.h" |
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55 | #include "vdpau_internal.h" |
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56 | |||
57 | #if CONFIG_ZLIB |
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58 | #include |
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59 | #endif |
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60 | |||
61 | #include "svq1.h" |
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62 | #include "svq3.h" |
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63 | |||
64 | /** |
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65 | * @file |
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66 | * svq3 decoder. |
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67 | */ |
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68 | |||
69 | typedef struct { |
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70 | H264Context h; |
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71 | HpelDSPContext hdsp; |
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72 | Picture *cur_pic; |
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73 | Picture *next_pic; |
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74 | Picture *last_pic; |
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75 | int halfpel_flag; |
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76 | int thirdpel_flag; |
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77 | int unknown_flag; |
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78 | int next_slice_index; |
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79 | uint32_t watermark_key; |
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80 | uint8_t *buf; |
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81 | int buf_size; |
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82 | int adaptive_quant; |
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83 | int next_p_frame_damaged; |
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84 | int h_edge_pos; |
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85 | int v_edge_pos; |
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86 | int last_frame_output; |
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87 | } SVQ3Context; |
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88 | |||
89 | #define FULLPEL_MODE 1 |
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90 | #define HALFPEL_MODE 2 |
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91 | #define THIRDPEL_MODE 3 |
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92 | #define PREDICT_MODE 4 |
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93 | |||
94 | /* dual scan (from some older h264 draft) |
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95 | * o-->o-->o o |
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96 | * | /| |
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97 | * o o o / o |
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98 | * | / | |/ | |
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99 | * o o o o |
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100 | * / |
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101 | * o-->o-->o-->o |
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102 | */ |
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103 | static const uint8_t svq3_scan[16] = { |
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104 | |||
105 | 2 + 2 * 4, 3 + 0 * 4, 3 + 1 * 4, 3 + 2 * 4, |
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106 | |||
107 | |||
108 | }; |
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109 | |||
110 | static const uint8_t luma_dc_zigzag_scan[16] = { |
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111 | |||
112 | 3 * 16 + 0 * 64, 0 * 16 + 1 * 64, 1 * 16 + 1 * 64, 2 * 16 + 1 * 64, |
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113 | 1 * 16 + 2 * 64, 2 * 16 + 2 * 64, 3 * 16 + 2 * 64, 0 * 16 + 3 * 64, |
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114 | 3 * 16 + 1 * 64, 1 * 16 + 3 * 64, 2 * 16 + 3 * 64, 3 * 16 + 3 * 64, |
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115 | }; |
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116 | |||
117 | static const uint8_t svq3_pred_0[25][2] = { |
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118 | { 0, 0 }, |
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119 | { 1, 0 }, { 0, 1 }, |
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120 | { 0, 2 }, { 1, 1 }, { 2, 0 }, |
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121 | { 3, 0 }, { 2, 1 }, { 1, 2 }, { 0, 3 }, |
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122 | { 0, 4 }, { 1, 3 }, { 2, 2 }, { 3, 1 }, { 4, 0 }, |
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123 | { 4, 1 }, { 3, 2 }, { 2, 3 }, { 1, 4 }, |
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124 | { 2, 4 }, { 3, 3 }, { 4, 2 }, |
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125 | { 4, 3 }, { 3, 4 }, |
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126 | { 4, 4 } |
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127 | }; |
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128 | |||
129 | static const int8_t svq3_pred_1[6][6][5] = { |
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130 | { { 2, -1, -1, -1, -1 }, { 2, 1, -1, -1, -1 }, { 1, 2, -1, -1, -1 }, |
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131 | { 2, 1, -1, -1, -1 }, { 1, 2, -1, -1, -1 }, { 1, 2, -1, -1, -1 } }, |
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132 | { { 0, 2, -1, -1, -1 }, { 0, 2, 1, 4, 3 }, { 0, 1, 2, 4, 3 }, |
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133 | { 0, 2, 1, 4, 3 }, { 2, 0, 1, 3, 4 }, { 0, 4, 2, 1, 3 } }, |
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134 | { { 2, 0, -1, -1, -1 }, { 2, 1, 0, 4, 3 }, { 1, 2, 4, 0, 3 }, |
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135 | { 2, 1, 0, 4, 3 }, { 2, 1, 4, 3, 0 }, { 1, 2, 4, 0, 3 } }, |
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136 | { { 2, 0, -1, -1, -1 }, { 2, 0, 1, 4, 3 }, { 1, 2, 0, 4, 3 }, |
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137 | { 2, 1, 0, 4, 3 }, { 2, 1, 3, 4, 0 }, { 2, 4, 1, 0, 3 } }, |
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138 | { { 0, 2, -1, -1, -1 }, { 0, 2, 1, 3, 4 }, { 1, 2, 3, 0, 4 }, |
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139 | { 2, 0, 1, 3, 4 }, { 2, 1, 3, 0, 4 }, { 2, 0, 4, 3, 1 } }, |
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140 | { { 0, 2, -1, -1, -1 }, { 0, 2, 4, 1, 3 }, { 1, 4, 2, 0, 3 }, |
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141 | { 4, 2, 0, 1, 3 }, { 2, 0, 1, 4, 3 }, { 4, 2, 1, 0, 3 } }, |
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142 | }; |
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143 | |||
144 | static const struct { |
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145 | uint8_t run; |
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146 | uint8_t level; |
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147 | } svq3_dct_tables[2][16] = { |
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148 | { { 0, 0 }, { 0, 1 }, { 1, 1 }, { 2, 1 }, { 0, 2 }, { 3, 1 }, { 4, 1 }, { 5, 1 }, |
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149 | { 0, 3 }, { 1, 2 }, { 2, 2 }, { 6, 1 }, { 7, 1 }, { 8, 1 }, { 9, 1 }, { 0, 4 } }, |
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150 | { { 0, 0 }, { 0, 1 }, { 1, 1 }, { 0, 2 }, { 2, 1 }, { 0, 3 }, { 0, 4 }, { 0, 5 }, |
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151 | { 3, 1 }, { 4, 1 }, { 1, 2 }, { 1, 3 }, { 0, 6 }, { 0, 7 }, { 0, 8 }, { 0, 9 } } |
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152 | }; |
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153 | |||
154 | static const uint32_t svq3_dequant_coeff[32] = { |
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155 | 3881, 4351, 4890, 5481, 6154, 6914, 7761, 8718, |
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156 | 9781, 10987, 12339, 13828, 15523, 17435, 19561, 21873, |
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157 | 24552, 27656, 30847, 34870, 38807, 43747, 49103, 54683, |
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158 | 61694, 68745, 77615, 89113, 100253, 109366, 126635, 141533 |
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159 | }; |
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160 | |||
161 | void ff_svq3_luma_dc_dequant_idct_c(int16_t *output, int16_t *input, int qp) |
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162 | { |
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163 | const int qmul = svq3_dequant_coeff[qp]; |
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164 | #define stride 16 |
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165 | int i; |
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166 | int temp[16]; |
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167 | static const uint8_t x_offset[4] = { 0, 1 * stride, 4 * stride, 5 * stride }; |
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168 | |||
169 | for (i = 0; i < 4; i++) { |
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170 | const int z0 = 13 * (input[4 * i + 0] + input[4 * i + 2]); |
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171 | const int z1 = 13 * (input[4 * i + 0] - input[4 * i + 2]); |
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172 | const int z2 = 7 * input[4 * i + 1] - 17 * input[4 * i + 3]; |
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173 | const int z3 = 17 * input[4 * i + 1] + 7 * input[4 * i + 3]; |
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174 | |||
175 | temp[4 * i + 0] = z0 + z3; |
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176 | temp[4 * i + 1] = z1 + z2; |
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177 | temp[4 * i + 2] = z1 - z2; |
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178 | temp[4 * i + 3] = z0 - z3; |
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179 | } |
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180 | |||
181 | for (i = 0; i < 4; i++) { |
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182 | const int offset = x_offset[i]; |
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183 | const int z0 = 13 * (temp[4 * 0 + i] + temp[4 * 2 + i]); |
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184 | const int z1 = 13 * (temp[4 * 0 + i] - temp[4 * 2 + i]); |
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185 | const int z2 = 7 * temp[4 * 1 + i] - 17 * temp[4 * 3 + i]; |
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186 | const int z3 = 17 * temp[4 * 1 + i] + 7 * temp[4 * 3 + i]; |
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187 | |||
188 | output[stride * 0 + offset] = (z0 + z3) * qmul + 0x80000 >> 20; |
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189 | output[stride * 2 + offset] = (z1 + z2) * qmul + 0x80000 >> 20; |
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190 | output[stride * 8 + offset] = (z1 - z2) * qmul + 0x80000 >> 20; |
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191 | output[stride * 10 + offset] = (z0 - z3) * qmul + 0x80000 >> 20; |
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192 | } |
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193 | } |
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194 | #undef stride |
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195 | |||
196 | void ff_svq3_add_idct_c(uint8_t *dst, int16_t *block, |
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197 | int stride, int qp, int dc) |
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198 | { |
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199 | const int qmul = svq3_dequant_coeff[qp]; |
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200 | int i; |
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201 | |||
202 | if (dc) { |
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203 | dc = 13 * 13 * (dc == 1 ? 1538 * block[0] |
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204 | : qmul * (block[0] >> 3) / 2); |
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205 | block[0] = 0; |
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206 | } |
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207 | |||
208 | for (i = 0; i < 4; i++) { |
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209 | const int z0 = 13 * (block[0 + 4 * i] + block[2 + 4 * i]); |
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210 | const int z1 = 13 * (block[0 + 4 * i] - block[2 + 4 * i]); |
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211 | const int z2 = 7 * block[1 + 4 * i] - 17 * block[3 + 4 * i]; |
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212 | const int z3 = 17 * block[1 + 4 * i] + 7 * block[3 + 4 * i]; |
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213 | |||
214 | block[0 + 4 * i] = z0 + z3; |
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215 | block[1 + 4 * i] = z1 + z2; |
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216 | block[2 + 4 * i] = z1 - z2; |
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217 | block[3 + 4 * i] = z0 - z3; |
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218 | } |
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219 | |||
220 | for (i = 0; i < 4; i++) { |
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221 | const int z0 = 13 * (block[i + 4 * 0] + block[i + 4 * 2]); |
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222 | const int z1 = 13 * (block[i + 4 * 0] - block[i + 4 * 2]); |
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223 | const int z2 = 7 * block[i + 4 * 1] - 17 * block[i + 4 * 3]; |
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224 | const int z3 = 17 * block[i + 4 * 1] + 7 * block[i + 4 * 3]; |
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225 | const int rr = (dc + 0x80000); |
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226 | |||
227 | dst[i + stride * 0] = av_clip_uint8(dst[i + stride * 0] + ((z0 + z3) * qmul + rr >> 20)); |
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228 | dst[i + stride * 1] = av_clip_uint8(dst[i + stride * 1] + ((z1 + z2) * qmul + rr >> 20)); |
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229 | dst[i + stride * 2] = av_clip_uint8(dst[i + stride * 2] + ((z1 - z2) * qmul + rr >> 20)); |
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230 | dst[i + stride * 3] = av_clip_uint8(dst[i + stride * 3] + ((z0 - z3) * qmul + rr >> 20)); |
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231 | } |
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232 | |||
233 | memset(block, 0, 16 * sizeof(int16_t)); |
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234 | } |
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235 | |||
236 | static inline int svq3_decode_block(GetBitContext *gb, int16_t *block, |
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237 | int index, const int type) |
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238 | { |
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239 | static const uint8_t *const scan_patterns[4] = |
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240 | { luma_dc_zigzag_scan, zigzag_scan, svq3_scan, chroma_dc_scan }; |
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241 | |||
242 | int run, level, sign, limit; |
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243 | unsigned vlc; |
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244 | const int intra = 3 * type >> 2; |
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245 | const uint8_t *const scan = scan_patterns[type]; |
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246 | |||
247 | for (limit = (16 >> intra); index < 16; index = limit, limit += 8) { |
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248 | for (; (vlc = svq3_get_ue_golomb(gb)) != 0; index++) { |
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249 | if ((int32_t)vlc < 0) |
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250 | return -1; |
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251 | |||
252 | sign = (vlc & 1) ? 0 : -1; |
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253 | vlc = vlc + 1 >> 1; |
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254 | |||
255 | if (type == 3) { |
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256 | if (vlc < 3) { |
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257 | run = 0; |
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258 | level = vlc; |
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259 | } else if (vlc < 4) { |
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260 | run = 1; |
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261 | level = 1; |
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262 | } else { |
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263 | run = vlc & 0x3; |
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264 | level = (vlc + 9 >> 2) - run; |
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265 | } |
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266 | } else { |
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267 | if (vlc < 16U) { |
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268 | run = svq3_dct_tables[intra][vlc].run; |
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269 | level = svq3_dct_tables[intra][vlc].level; |
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270 | } else if (intra) { |
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271 | run = vlc & 0x7; |
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272 | level = (vlc >> 3) + ((run == 0) ? 8 : ((run < 2) ? 2 : ((run < 5) ? 0 : -1))); |
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273 | } else { |
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274 | run = vlc & 0xF; |
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275 | level = (vlc >> 4) + ((run == 0) ? 4 : ((run < 3) ? 2 : ((run < 10) ? 1 : 0))); |
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276 | } |
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277 | } |
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278 | |||
279 | |||
280 | if ((index += run) >= limit) |
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281 | return -1; |
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282 | |||
283 | block[scan[index]] = (level ^ sign) - sign; |
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284 | } |
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285 | |||
286 | if (type != 2) { |
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287 | break; |
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288 | } |
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289 | } |
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290 | |||
291 | return 0; |
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292 | } |
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293 | |||
294 | static inline void svq3_mc_dir_part(SVQ3Context *s, |
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295 | int x, int y, int width, int height, |
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296 | int mx, int my, int dxy, |
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297 | int thirdpel, int dir, int avg) |
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298 | { |
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299 | H264Context *h = &s->h; |
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300 | const Picture *pic = (dir == 0) ? s->last_pic : s->next_pic; |
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301 | uint8_t *src, *dest; |
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302 | int i, emu = 0; |
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303 | int blocksize = 2 - (width >> 3); // 16->0, 8->1, 4->2 |
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304 | |||
305 | mx += x; |
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306 | my += y; |
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307 | |||
308 | if (mx < 0 || mx >= s->h_edge_pos - width - 1 || |
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309 | my < 0 || my >= s->v_edge_pos - height - 1) { |
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310 | emu = 1; |
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311 | mx = av_clip(mx, -16, s->h_edge_pos - width + 15); |
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312 | my = av_clip(my, -16, s->v_edge_pos - height + 15); |
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313 | } |
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314 | |||
315 | /* form component predictions */ |
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316 | dest = h->cur_pic.f.data[0] + x + y * h->linesize; |
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317 | src = pic->f.data[0] + mx + my * h->linesize; |
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318 | |||
319 | if (emu) { |
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320 | h->vdsp.emulated_edge_mc(h->edge_emu_buffer, h->linesize, |
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321 | src, h->linesize, |
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322 | width + 1, height + 1, |
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323 | mx, my, s->h_edge_pos, s->v_edge_pos); |
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324 | src = h->edge_emu_buffer; |
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325 | } |
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326 | if (thirdpel) |
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327 | (avg ? h->dsp.avg_tpel_pixels_tab |
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328 | : h->dsp.put_tpel_pixels_tab)[dxy](dest, src, h->linesize, |
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329 | width, height); |
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330 | else |
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331 | (avg ? s->hdsp.avg_pixels_tab |
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332 | : s->hdsp.put_pixels_tab)[blocksize][dxy](dest, src, h->linesize, |
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333 | height); |
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334 | |||
335 | if (!(h->flags & CODEC_FLAG_GRAY)) { |
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336 | mx = mx + (mx < (int) x) >> 1; |
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337 | my = my + (my < (int) y) >> 1; |
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338 | width = width >> 1; |
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339 | height = height >> 1; |
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340 | blocksize++; |
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341 | |||
342 | for (i = 1; i < 3; i++) { |
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343 | dest = h->cur_pic.f.data[i] + (x >> 1) + (y >> 1) * h->uvlinesize; |
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344 | src = pic->f.data[i] + mx + my * h->uvlinesize; |
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345 | |||
346 | if (emu) { |
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347 | h->vdsp.emulated_edge_mc(h->edge_emu_buffer, h->uvlinesize, |
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348 | src, h->uvlinesize, |
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349 | width + 1, height + 1, |
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350 | mx, my, (s->h_edge_pos >> 1), |
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351 | s->v_edge_pos >> 1); |
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352 | src = h->edge_emu_buffer; |
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353 | } |
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354 | if (thirdpel) |
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355 | (avg ? h->dsp.avg_tpel_pixels_tab |
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356 | : h->dsp.put_tpel_pixels_tab)[dxy](dest, src, |
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357 | h->uvlinesize, |
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358 | width, height); |
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359 | else |
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360 | (avg ? s->hdsp.avg_pixels_tab |
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361 | : s->hdsp.put_pixels_tab)[blocksize][dxy](dest, src, |
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362 | h->uvlinesize, |
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363 | height); |
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364 | } |
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365 | } |
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366 | } |
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367 | |||
368 | static inline int svq3_mc_dir(SVQ3Context *s, int size, int mode, |
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369 | int dir, int avg) |
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370 | { |
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371 | int i, j, k, mx, my, dx, dy, x, y; |
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372 | H264Context *h = &s->h; |
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373 | const int part_width = ((size & 5) == 4) ? 4 : 16 >> (size & 1); |
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374 | const int part_height = 16 >> ((unsigned)(size + 1) / 3); |
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375 | const int extra_width = (mode == PREDICT_MODE) ? -16 * 6 : 0; |
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376 | const int h_edge_pos = 6 * (s->h_edge_pos - part_width) - extra_width; |
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377 | const int v_edge_pos = 6 * (s->v_edge_pos - part_height) - extra_width; |
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378 | |||
379 | for (i = 0; i < 16; i += part_height) |
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380 | for (j = 0; j < 16; j += part_width) { |
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381 | const int b_xy = (4 * h->mb_x + (j >> 2)) + |
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382 | (4 * h->mb_y + (i >> 2)) * h->b_stride; |
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383 | int dxy; |
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384 | x = 16 * h->mb_x + j; |
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385 | y = 16 * h->mb_y + i; |
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386 | k = (j >> 2 & 1) + (i >> 1 & 2) + |
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387 | (j >> 1 & 4) + (i & 8); |
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388 | |||
389 | if (mode != PREDICT_MODE) { |
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390 | pred_motion(h, k, part_width >> 2, dir, 1, &mx, &my); |
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391 | } else { |
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392 | mx = s->next_pic->motion_val[0][b_xy][0] << 1; |
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393 | my = s->next_pic->motion_val[0][b_xy][1] << 1; |
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394 | |||
395 | if (dir == 0) { |
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396 | mx = mx * h->frame_num_offset / |
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397 | h->prev_frame_num_offset + 1 >> 1; |
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398 | my = my * h->frame_num_offset / |
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399 | h->prev_frame_num_offset + 1 >> 1; |
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400 | } else { |
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401 | mx = mx * (h->frame_num_offset - h->prev_frame_num_offset) / |
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402 | h->prev_frame_num_offset + 1 >> 1; |
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403 | my = my * (h->frame_num_offset - h->prev_frame_num_offset) / |
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404 | h->prev_frame_num_offset + 1 >> 1; |
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405 | } |
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406 | } |
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407 | |||
408 | /* clip motion vector prediction to frame border */ |
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409 | mx = av_clip(mx, extra_width - 6 * x, h_edge_pos - 6 * x); |
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410 | my = av_clip(my, extra_width - 6 * y, v_edge_pos - 6 * y); |
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411 | |||
412 | /* get (optional) motion vector differential */ |
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413 | if (mode == PREDICT_MODE) { |
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414 | dx = dy = 0; |
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415 | } else { |
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416 | dy = svq3_get_se_golomb(&h->gb); |
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417 | dx = svq3_get_se_golomb(&h->gb); |
||
418 | |||
419 | if (dx == INVALID_VLC || dy == INVALID_VLC) { |
||
420 | av_log(h->avctx, AV_LOG_ERROR, "invalid MV vlc\n"); |
||
421 | return -1; |
||
422 | } |
||
423 | } |
||
424 | |||
425 | /* compute motion vector */ |
||
426 | if (mode == THIRDPEL_MODE) { |
||
427 | int fx, fy; |
||
428 | mx = (mx + 1 >> 1) + dx; |
||
429 | my = (my + 1 >> 1) + dy; |
||
430 | fx = (unsigned)(mx + 0x3000) / 3 - 0x1000; |
||
431 | fy = (unsigned)(my + 0x3000) / 3 - 0x1000; |
||
432 | dxy = (mx - 3 * fx) + 4 * (my - 3 * fy); |
||
433 | |||
434 | svq3_mc_dir_part(s, x, y, part_width, part_height, |
||
435 | fx, fy, dxy, 1, dir, avg); |
||
436 | mx += mx; |
||
437 | my += my; |
||
438 | } else if (mode == HALFPEL_MODE || mode == PREDICT_MODE) { |
||
439 | mx = (unsigned)(mx + 1 + 0x3000) / 3 + dx - 0x1000; |
||
440 | my = (unsigned)(my + 1 + 0x3000) / 3 + dy - 0x1000; |
||
441 | dxy = (mx & 1) + 2 * (my & 1); |
||
442 | |||
443 | svq3_mc_dir_part(s, x, y, part_width, part_height, |
||
444 | mx >> 1, my >> 1, dxy, 0, dir, avg); |
||
445 | mx *= 3; |
||
446 | my *= 3; |
||
447 | } else { |
||
448 | mx = (unsigned)(mx + 3 + 0x6000) / 6 + dx - 0x1000; |
||
449 | my = (unsigned)(my + 3 + 0x6000) / 6 + dy - 0x1000; |
||
450 | |||
451 | svq3_mc_dir_part(s, x, y, part_width, part_height, |
||
452 | mx, my, 0, 0, dir, avg); |
||
453 | mx *= 6; |
||
454 | my *= 6; |
||
455 | } |
||
456 | |||
457 | /* update mv_cache */ |
||
458 | if (mode != PREDICT_MODE) { |
||
459 | int32_t mv = pack16to32(mx, my); |
||
460 | |||
461 | if (part_height == 8 && i < 8) { |
||
462 | AV_WN32A(h->mv_cache[dir][scan8[k] + 1 * 8], mv); |
||
463 | |||
464 | if (part_width == 8 && j < 8) |
||
465 | AV_WN32A(h->mv_cache[dir][scan8[k] + 1 + 1 * 8], mv); |
||
466 | } |
||
467 | if (part_width == 8 && j < 8) |
||
468 | AV_WN32A(h->mv_cache[dir][scan8[k] + 1], mv); |
||
469 | if (part_width == 4 || part_height == 4) |
||
470 | AV_WN32A(h->mv_cache[dir][scan8[k]], mv); |
||
471 | } |
||
472 | |||
473 | /* write back motion vectors */ |
||
474 | fill_rectangle(h->cur_pic.motion_val[dir][b_xy], |
||
475 | part_width >> 2, part_height >> 2, h->b_stride, |
||
476 | pack16to32(mx, my), 4); |
||
477 | } |
||
478 | |||
479 | return 0; |
||
480 | } |
||
481 | |||
482 | static int svq3_decode_mb(SVQ3Context *s, unsigned int mb_type) |
||
483 | { |
||
484 | H264Context *h = &s->h; |
||
485 | int i, j, k, m, dir, mode; |
||
486 | int cbp = 0; |
||
487 | uint32_t vlc; |
||
488 | int8_t *top, *left; |
||
489 | const int mb_xy = h->mb_xy; |
||
490 | const int b_xy = 4 * h->mb_x + 4 * h->mb_y * h->b_stride; |
||
491 | |||
492 | h->top_samples_available = (h->mb_y == 0) ? 0x33FF : 0xFFFF; |
||
493 | h->left_samples_available = (h->mb_x == 0) ? 0x5F5F : 0xFFFF; |
||
494 | h->topright_samples_available = 0xFFFF; |
||
495 | |||
496 | if (mb_type == 0) { /* SKIP */ |
||
497 | if (h->pict_type == AV_PICTURE_TYPE_P || |
||
498 | s->next_pic->mb_type[mb_xy] == -1) { |
||
499 | svq3_mc_dir_part(s, 16 * h->mb_x, 16 * h->mb_y, 16, 16, |
||
500 | 0, 0, 0, 0, 0, 0); |
||
501 | |||
502 | if (h->pict_type == AV_PICTURE_TYPE_B) |
||
503 | svq3_mc_dir_part(s, 16 * h->mb_x, 16 * h->mb_y, 16, 16, |
||
504 | 0, 0, 0, 0, 1, 1); |
||
505 | |||
506 | mb_type = MB_TYPE_SKIP; |
||
507 | } else { |
||
508 | mb_type = FFMIN(s->next_pic->mb_type[mb_xy], 6); |
||
509 | if (svq3_mc_dir(s, mb_type, PREDICT_MODE, 0, 0) < 0) |
||
510 | return -1; |
||
511 | if (svq3_mc_dir(s, mb_type, PREDICT_MODE, 1, 1) < 0) |
||
512 | return -1; |
||
513 | |||
514 | mb_type = MB_TYPE_16x16; |
||
515 | } |
||
516 | } else if (mb_type < 8) { /* INTER */ |
||
517 | if (s->thirdpel_flag && s->halfpel_flag == !get_bits1(&h->gb)) |
||
518 | mode = THIRDPEL_MODE; |
||
519 | else if (s->halfpel_flag && |
||
520 | s->thirdpel_flag == !get_bits1(&h->gb)) |
||
521 | mode = HALFPEL_MODE; |
||
522 | else |
||
523 | mode = FULLPEL_MODE; |
||
524 | |||
525 | /* fill caches */ |
||
526 | /* note ref_cache should contain here: |
||
527 | * ???????? |
||
528 | * ???11111 |
||
529 | * N??11111 |
||
530 | * N??11111 |
||
531 | * N??11111 |
||
532 | */ |
||
533 | |||
534 | for (m = 0; m < 2; m++) { |
||
535 | if (h->mb_x > 0 && h->intra4x4_pred_mode[h->mb2br_xy[mb_xy - 1] + 6] != -1) { |
||
536 | for (i = 0; i < 4; i++) |
||
537 | AV_COPY32(h->mv_cache[m][scan8[0] - 1 + i * 8], |
||
538 | h->cur_pic.motion_val[m][b_xy - 1 + i * h->b_stride]); |
||
539 | } else { |
||
540 | for (i = 0; i < 4; i++) |
||
541 | AV_ZERO32(h->mv_cache[m][scan8[0] - 1 + i * 8]); |
||
542 | } |
||
543 | if (h->mb_y > 0) { |
||
544 | memcpy(h->mv_cache[m][scan8[0] - 1 * 8], |
||
545 | h->cur_pic.motion_val[m][b_xy - h->b_stride], |
||
546 | 4 * 2 * sizeof(int16_t)); |
||
547 | memset(&h->ref_cache[m][scan8[0] - 1 * 8], |
||
548 | (h->intra4x4_pred_mode[h->mb2br_xy[mb_xy - h->mb_stride]] == -1) ? PART_NOT_AVAILABLE : 1, 4); |
||
549 | |||
550 | if (h->mb_x < h->mb_width - 1) { |
||
551 | AV_COPY32(h->mv_cache[m][scan8[0] + 4 - 1 * 8], |
||
552 | h->cur_pic.motion_val[m][b_xy - h->b_stride + 4]); |
||
553 | h->ref_cache[m][scan8[0] + 4 - 1 * 8] = |
||
554 | (h->intra4x4_pred_mode[h->mb2br_xy[mb_xy - h->mb_stride + 1] + 6] == -1 || |
||
555 | h->intra4x4_pred_mode[h->mb2br_xy[mb_xy - h->mb_stride]] == -1) ? PART_NOT_AVAILABLE : 1; |
||
556 | } else |
||
557 | h->ref_cache[m][scan8[0] + 4 - 1 * 8] = PART_NOT_AVAILABLE; |
||
558 | if (h->mb_x > 0) { |
||
559 | AV_COPY32(h->mv_cache[m][scan8[0] - 1 - 1 * 8], |
||
560 | h->cur_pic.motion_val[m][b_xy - h->b_stride - 1]); |
||
561 | h->ref_cache[m][scan8[0] - 1 - 1 * 8] = |
||
562 | (h->intra4x4_pred_mode[h->mb2br_xy[mb_xy - h->mb_stride - 1] + 3] == -1) ? PART_NOT_AVAILABLE : 1; |
||
563 | } else |
||
564 | h->ref_cache[m][scan8[0] - 1 - 1 * 8] = PART_NOT_AVAILABLE; |
||
565 | } else |
||
566 | memset(&h->ref_cache[m][scan8[0] - 1 * 8 - 1], |
||
567 | PART_NOT_AVAILABLE, 8); |
||
568 | |||
569 | if (h->pict_type != AV_PICTURE_TYPE_B) |
||
570 | break; |
||
571 | } |
||
572 | |||
573 | /* decode motion vector(s) and form prediction(s) */ |
||
574 | if (h->pict_type == AV_PICTURE_TYPE_P) { |
||
575 | if (svq3_mc_dir(s, mb_type - 1, mode, 0, 0) < 0) |
||
576 | return -1; |
||
577 | } else { /* AV_PICTURE_TYPE_B */ |
||
578 | if (mb_type != 2) { |
||
579 | if (svq3_mc_dir(s, 0, mode, 0, 0) < 0) |
||
580 | return -1; |
||
581 | } else { |
||
582 | for (i = 0; i < 4; i++) |
||
583 | memset(h->cur_pic.motion_val[0][b_xy + i * h->b_stride], |
||
584 | 0, 4 * 2 * sizeof(int16_t)); |
||
585 | } |
||
586 | if (mb_type != 1) { |
||
587 | if (svq3_mc_dir(s, 0, mode, 1, mb_type == 3) < 0) |
||
588 | return -1; |
||
589 | } else { |
||
590 | for (i = 0; i < 4; i++) |
||
591 | memset(h->cur_pic.motion_val[1][b_xy + i * h->b_stride], |
||
592 | 0, 4 * 2 * sizeof(int16_t)); |
||
593 | } |
||
594 | } |
||
595 | |||
596 | mb_type = MB_TYPE_16x16; |
||
597 | } else if (mb_type == 8 || mb_type == 33) { /* INTRA4x4 */ |
||
598 | memset(h->intra4x4_pred_mode_cache, -1, 8 * 5 * sizeof(int8_t)); |
||
599 | |||
600 | if (mb_type == 8) { |
||
601 | if (h->mb_x > 0) { |
||
602 | for (i = 0; i < 4; i++) |
||
603 | h->intra4x4_pred_mode_cache[scan8[0] - 1 + i * 8] = h->intra4x4_pred_mode[h->mb2br_xy[mb_xy - 1] + 6 - i]; |
||
604 | if (h->intra4x4_pred_mode_cache[scan8[0] - 1] == -1) |
||
605 | h->left_samples_available = 0x5F5F; |
||
606 | } |
||
607 | if (h->mb_y > 0) { |
||
608 | h->intra4x4_pred_mode_cache[4 + 8 * 0] = h->intra4x4_pred_mode[h->mb2br_xy[mb_xy - h->mb_stride] + 0]; |
||
609 | h->intra4x4_pred_mode_cache[5 + 8 * 0] = h->intra4x4_pred_mode[h->mb2br_xy[mb_xy - h->mb_stride] + 1]; |
||
610 | h->intra4x4_pred_mode_cache[6 + 8 * 0] = h->intra4x4_pred_mode[h->mb2br_xy[mb_xy - h->mb_stride] + 2]; |
||
611 | h->intra4x4_pred_mode_cache[7 + 8 * 0] = h->intra4x4_pred_mode[h->mb2br_xy[mb_xy - h->mb_stride] + 3]; |
||
612 | |||
613 | if (h->intra4x4_pred_mode_cache[4 + 8 * 0] == -1) |
||
614 | h->top_samples_available = 0x33FF; |
||
615 | } |
||
616 | |||
617 | /* decode prediction codes for luma blocks */ |
||
618 | for (i = 0; i < 16; i += 2) { |
||
619 | vlc = svq3_get_ue_golomb(&h->gb); |
||
620 | |||
621 | if (vlc >= 25U) { |
||
622 | av_log(h->avctx, AV_LOG_ERROR, "luma prediction:%d\n", vlc); |
||
623 | return -1; |
||
624 | } |
||
625 | |||
626 | left = &h->intra4x4_pred_mode_cache[scan8[i] - 1]; |
||
627 | top = &h->intra4x4_pred_mode_cache[scan8[i] - 8]; |
||
628 | |||
629 | left[1] = svq3_pred_1[top[0] + 1][left[0] + 1][svq3_pred_0[vlc][0]]; |
||
630 | left[2] = svq3_pred_1[top[1] + 1][left[1] + 1][svq3_pred_0[vlc][1]]; |
||
631 | |||
632 | if (left[1] == -1 || left[2] == -1) { |
||
633 | av_log(h->avctx, AV_LOG_ERROR, "weird prediction\n"); |
||
634 | return -1; |
||
635 | } |
||
636 | } |
||
637 | } else { /* mb_type == 33, DC_128_PRED block type */ |
||
638 | for (i = 0; i < 4; i++) |
||
639 | memset(&h->intra4x4_pred_mode_cache[scan8[0] + 8 * i], DC_PRED, 4); |
||
640 | } |
||
641 | |||
642 | write_back_intra_pred_mode(h); |
||
643 | |||
644 | if (mb_type == 8) { |
||
645 | ff_h264_check_intra4x4_pred_mode(h); |
||
646 | |||
647 | h->top_samples_available = (h->mb_y == 0) ? 0x33FF : 0xFFFF; |
||
648 | h->left_samples_available = (h->mb_x == 0) ? 0x5F5F : 0xFFFF; |
||
649 | } else { |
||
650 | for (i = 0; i < 4; i++) |
||
651 | memset(&h->intra4x4_pred_mode_cache[scan8[0] + 8 * i], DC_128_PRED, 4); |
||
652 | |||
653 | h->top_samples_available = 0x33FF; |
||
654 | h->left_samples_available = 0x5F5F; |
||
655 | } |
||
656 | |||
657 | mb_type = MB_TYPE_INTRA4x4; |
||
658 | } else { /* INTRA16x16 */ |
||
659 | dir = i_mb_type_info[mb_type - 8].pred_mode; |
||
660 | dir = (dir >> 1) ^ 3 * (dir & 1) ^ 1; |
||
661 | |||
662 | if ((h->intra16x16_pred_mode = ff_h264_check_intra_pred_mode(h, dir, 0)) < 0) { |
||
663 | av_log(h->avctx, AV_LOG_ERROR, "ff_h264_check_intra_pred_mode < 0\n"); |
||
664 | return h->intra16x16_pred_mode; |
||
665 | } |
||
666 | |||
667 | cbp = i_mb_type_info[mb_type - 8].cbp; |
||
668 | mb_type = MB_TYPE_INTRA16x16; |
||
669 | } |
||
670 | |||
671 | if (!IS_INTER(mb_type) && h->pict_type != AV_PICTURE_TYPE_I) { |
||
672 | for (i = 0; i < 4; i++) |
||
673 | memset(h->cur_pic.motion_val[0][b_xy + i * h->b_stride], |
||
674 | 0, 4 * 2 * sizeof(int16_t)); |
||
675 | if (h->pict_type == AV_PICTURE_TYPE_B) { |
||
676 | for (i = 0; i < 4; i++) |
||
677 | memset(h->cur_pic.motion_val[1][b_xy + i * h->b_stride], |
||
678 | 0, 4 * 2 * sizeof(int16_t)); |
||
679 | } |
||
680 | } |
||
681 | if (!IS_INTRA4x4(mb_type)) { |
||
682 | memset(h->intra4x4_pred_mode + h->mb2br_xy[mb_xy], DC_PRED, 8); |
||
683 | } |
||
684 | if (!IS_SKIP(mb_type) || h->pict_type == AV_PICTURE_TYPE_B) { |
||
685 | memset(h->non_zero_count_cache + 8, 0, 14 * 8 * sizeof(uint8_t)); |
||
686 | } |
||
687 | |||
688 | if (!IS_INTRA16x16(mb_type) && |
||
689 | (!IS_SKIP(mb_type) || h->pict_type == AV_PICTURE_TYPE_B)) { |
||
690 | if ((vlc = svq3_get_ue_golomb(&h->gb)) >= 48U){ |
||
691 | av_log(h->avctx, AV_LOG_ERROR, "cbp_vlc=%d\n", vlc); |
||
692 | return -1; |
||
693 | } |
||
694 | |||
695 | cbp = IS_INTRA(mb_type) ? golomb_to_intra4x4_cbp[vlc] |
||
696 | : golomb_to_inter_cbp[vlc]; |
||
697 | } |
||
698 | if (IS_INTRA16x16(mb_type) || |
||
699 | (h->pict_type != AV_PICTURE_TYPE_I && s->adaptive_quant && cbp)) { |
||
700 | h->qscale += svq3_get_se_golomb(&h->gb); |
||
701 | |||
702 | if (h->qscale > 31u) { |
||
703 | av_log(h->avctx, AV_LOG_ERROR, "qscale:%d\n", h->qscale); |
||
704 | return -1; |
||
705 | } |
||
706 | } |
||
707 | if (IS_INTRA16x16(mb_type)) { |
||
708 | AV_ZERO128(h->mb_luma_dc[0] + 0); |
||
709 | AV_ZERO128(h->mb_luma_dc[0] + 8); |
||
710 | if (svq3_decode_block(&h->gb, h->mb_luma_dc[0], 0, 1)) { |
||
711 | av_log(h->avctx, AV_LOG_ERROR, |
||
712 | "error while decoding intra luma dc\n"); |
||
713 | return -1; |
||
714 | } |
||
715 | } |
||
716 | |||
717 | if (cbp) { |
||
718 | const int index = IS_INTRA16x16(mb_type) ? 1 : 0; |
||
719 | const int type = ((h->qscale < 24 && IS_INTRA4x4(mb_type)) ? 2 : 1); |
||
720 | |||
721 | for (i = 0; i < 4; i++) |
||
722 | if ((cbp & (1 << i))) { |
||
723 | for (j = 0; j < 4; j++) { |
||
724 | k = index ? (1 * (j & 1) + 2 * (i & 1) + |
||
725 | 2 * (j & 2) + 4 * (i & 2)) |
||
726 | : (4 * i + j); |
||
727 | h->non_zero_count_cache[scan8[k]] = 1; |
||
728 | |||
729 | if (svq3_decode_block(&h->gb, &h->mb[16 * k], index, type)) { |
||
730 | av_log(h->avctx, AV_LOG_ERROR, |
||
731 | "error while decoding block\n"); |
||
732 | return -1; |
||
733 | } |
||
734 | } |
||
735 | } |
||
736 | |||
737 | if ((cbp & 0x30)) { |
||
738 | for (i = 1; i < 3; ++i) |
||
739 | if (svq3_decode_block(&h->gb, &h->mb[16 * 16 * i], 0, 3)) { |
||
740 | av_log(h->avctx, AV_LOG_ERROR, |
||
741 | "error while decoding chroma dc block\n"); |
||
742 | return -1; |
||
743 | } |
||
744 | |||
745 | if ((cbp & 0x20)) { |
||
746 | for (i = 1; i < 3; i++) { |
||
747 | for (j = 0; j < 4; j++) { |
||
748 | k = 16 * i + j; |
||
749 | h->non_zero_count_cache[scan8[k]] = 1; |
||
750 | |||
751 | if (svq3_decode_block(&h->gb, &h->mb[16 * k], 1, 1)) { |
||
752 | av_log(h->avctx, AV_LOG_ERROR, |
||
753 | "error while decoding chroma ac block\n"); |
||
754 | return -1; |
||
755 | } |
||
756 | } |
||
757 | } |
||
758 | } |
||
759 | } |
||
760 | } |
||
761 | |||
762 | h->cbp = cbp; |
||
763 | h->cur_pic.mb_type[mb_xy] = mb_type; |
||
764 | |||
765 | if (IS_INTRA(mb_type)) |
||
766 | h->chroma_pred_mode = ff_h264_check_intra_pred_mode(h, DC_PRED8x8, 1); |
||
767 | |||
768 | return 0; |
||
769 | } |
||
770 | |||
771 | static int svq3_decode_slice_header(AVCodecContext *avctx) |
||
772 | { |
||
773 | SVQ3Context *s = avctx->priv_data; |
||
774 | H264Context *h = &s->h; |
||
775 | const int mb_xy = h->mb_xy; |
||
776 | int i, header; |
||
777 | unsigned slice_id; |
||
778 | |||
779 | header = get_bits(&h->gb, 8); |
||
780 | |||
781 | if (((header & 0x9F) != 1 && (header & 0x9F) != 2) || (header & 0x60) == 0) { |
||
782 | /* TODO: what? */ |
||
783 | av_log(avctx, AV_LOG_ERROR, "unsupported slice header (%02X)\n", header); |
||
784 | return -1; |
||
785 | } else { |
||
786 | int length = header >> 5 & 3; |
||
787 | |||
788 | s->next_slice_index = get_bits_count(&h->gb) + |
||
789 | 8 * show_bits(&h->gb, 8 * length) + |
||
790 | 8 * length; |
||
791 | |||
792 | if (s->next_slice_index > h->gb.size_in_bits) { |
||
793 | av_log(avctx, AV_LOG_ERROR, "slice after bitstream end\n"); |
||
794 | return -1; |
||
795 | } |
||
796 | |||
797 | h->gb.size_in_bits = s->next_slice_index - 8 * (length - 1); |
||
798 | skip_bits(&h->gb, 8); |
||
799 | |||
800 | if (s->watermark_key) { |
||
801 | uint32_t header = AV_RL32(&h->gb.buffer[(get_bits_count(&h->gb) >> 3) + 1]); |
||
802 | AV_WL32(&h->gb.buffer[(get_bits_count(&h->gb) >> 3) + 1], |
||
803 | header ^ s->watermark_key); |
||
804 | } |
||
805 | if (length > 0) { |
||
806 | memmove((uint8_t *) &h->gb.buffer[get_bits_count(&h->gb) >> 3], |
||
807 | &h->gb.buffer[h->gb.size_in_bits >> 3], length - 1); |
||
808 | } |
||
809 | skip_bits_long(&h->gb, 0); |
||
810 | } |
||
811 | |||
812 | if ((slice_id = svq3_get_ue_golomb(&h->gb)) >= 3) { |
||
813 | av_log(h->avctx, AV_LOG_ERROR, "illegal slice type %d \n", slice_id); |
||
814 | return -1; |
||
815 | } |
||
816 | |||
817 | h->slice_type = golomb_to_pict_type[slice_id]; |
||
818 | |||
819 | if ((header & 0x9F) == 2) { |
||
820 | i = (h->mb_num < 64) ? 6 : (1 + av_log2(h->mb_num - 1)); |
||
821 | h->mb_skip_run = get_bits(&h->gb, i) - |
||
822 | (h->mb_y * h->mb_width + h->mb_x); |
||
823 | } else { |
||
824 | skip_bits1(&h->gb); |
||
825 | h->mb_skip_run = 0; |
||
826 | } |
||
827 | |||
828 | h->slice_num = get_bits(&h->gb, 8); |
||
829 | h->qscale = get_bits(&h->gb, 5); |
||
830 | s->adaptive_quant = get_bits1(&h->gb); |
||
831 | |||
832 | /* unknown fields */ |
||
833 | skip_bits1(&h->gb); |
||
834 | |||
835 | if (s->unknown_flag) |
||
836 | skip_bits1(&h->gb); |
||
837 | |||
838 | skip_bits1(&h->gb); |
||
839 | skip_bits(&h->gb, 2); |
||
840 | |||
841 | while (get_bits1(&h->gb)) |
||
842 | skip_bits(&h->gb, 8); |
||
843 | |||
844 | /* reset intra predictors and invalidate motion vector references */ |
||
845 | if (h->mb_x > 0) { |
||
846 | memset(h->intra4x4_pred_mode + h->mb2br_xy[mb_xy - 1] + 3, |
||
847 | -1, 4 * sizeof(int8_t)); |
||
848 | memset(h->intra4x4_pred_mode + h->mb2br_xy[mb_xy - h->mb_x], |
||
849 | -1, 8 * sizeof(int8_t) * h->mb_x); |
||
850 | } |
||
851 | if (h->mb_y > 0) { |
||
852 | memset(h->intra4x4_pred_mode + h->mb2br_xy[mb_xy - h->mb_stride], |
||
853 | -1, 8 * sizeof(int8_t) * (h->mb_width - h->mb_x)); |
||
854 | |||
855 | if (h->mb_x > 0) |
||
856 | h->intra4x4_pred_mode[h->mb2br_xy[mb_xy - h->mb_stride - 1] + 3] = -1; |
||
857 | } |
||
858 | |||
859 | return 0; |
||
860 | } |
||
861 | |||
862 | static av_cold int svq3_decode_init(AVCodecContext *avctx) |
||
863 | { |
||
864 | SVQ3Context *s = avctx->priv_data; |
||
865 | H264Context *h = &s->h; |
||
866 | int m; |
||
867 | unsigned char *extradata; |
||
868 | unsigned char *extradata_end; |
||
869 | unsigned int size; |
||
870 | int marker_found = 0; |
||
871 | |||
872 | s->cur_pic = av_mallocz(sizeof(*s->cur_pic)); |
||
873 | s->last_pic = av_mallocz(sizeof(*s->last_pic)); |
||
874 | s->next_pic = av_mallocz(sizeof(*s->next_pic)); |
||
875 | if (!s->next_pic || !s->last_pic || !s->cur_pic) { |
||
876 | av_freep(&s->cur_pic); |
||
877 | av_freep(&s->last_pic); |
||
878 | av_freep(&s->next_pic); |
||
879 | return AVERROR(ENOMEM); |
||
880 | } |
||
881 | |||
882 | if (ff_h264_decode_init(avctx) < 0) |
||
883 | return -1; |
||
884 | |||
885 | ff_hpeldsp_init(&s->hdsp, avctx->flags); |
||
886 | h->flags = avctx->flags; |
||
887 | h->is_complex = 1; |
||
888 | h->sps.chroma_format_idc = 1; |
||
889 | h->picture_structure = PICT_FRAME; |
||
890 | avctx->pix_fmt = avctx->codec->pix_fmts[0]; |
||
891 | |||
892 | h->chroma_qp[0] = h->chroma_qp[1] = 4; |
||
893 | h->chroma_x_shift = h->chroma_y_shift = 1; |
||
894 | |||
895 | s->halfpel_flag = 1; |
||
896 | s->thirdpel_flag = 1; |
||
897 | s->unknown_flag = 0; |
||
898 | |||
899 | /* prowl for the "SEQH" marker in the extradata */ |
||
900 | extradata = (unsigned char *)avctx->extradata; |
||
901 | extradata_end = avctx->extradata + avctx->extradata_size; |
||
902 | if (extradata) { |
||
903 | for (m = 0; m + 8 < avctx->extradata_size; m++) { |
||
904 | if (!memcmp(extradata, "SEQH", 4)) { |
||
905 | marker_found = 1; |
||
906 | break; |
||
907 | } |
||
908 | extradata++; |
||
909 | } |
||
910 | } |
||
911 | |||
912 | /* if a match was found, parse the extra data */ |
||
913 | if (marker_found) { |
||
914 | GetBitContext gb; |
||
915 | int frame_size_code; |
||
916 | |||
917 | size = AV_RB32(&extradata[4]); |
||
918 | if (size > extradata_end - extradata - 8) |
||
919 | return AVERROR_INVALIDDATA; |
||
920 | init_get_bits(&gb, extradata + 8, size * 8); |
||
921 | |||
922 | /* 'frame size code' and optional 'width, height' */ |
||
923 | frame_size_code = get_bits(&gb, 3); |
||
924 | switch (frame_size_code) { |
||
925 | case 0: |
||
926 | avctx->width = 160; |
||
927 | avctx->height = 120; |
||
928 | break; |
||
929 | case 1: |
||
930 | avctx->width = 128; |
||
931 | avctx->height = 96; |
||
932 | break; |
||
933 | case 2: |
||
934 | avctx->width = 176; |
||
935 | avctx->height = 144; |
||
936 | break; |
||
937 | case 3: |
||
938 | avctx->width = 352; |
||
939 | avctx->height = 288; |
||
940 | break; |
||
941 | case 4: |
||
942 | avctx->width = 704; |
||
943 | avctx->height = 576; |
||
944 | break; |
||
945 | case 5: |
||
946 | avctx->width = 240; |
||
947 | avctx->height = 180; |
||
948 | break; |
||
949 | case 6: |
||
950 | avctx->width = 320; |
||
951 | avctx->height = 240; |
||
952 | break; |
||
953 | case 7: |
||
954 | avctx->width = get_bits(&gb, 12); |
||
955 | avctx->height = get_bits(&gb, 12); |
||
956 | break; |
||
957 | } |
||
958 | |||
959 | s->halfpel_flag = get_bits1(&gb); |
||
960 | s->thirdpel_flag = get_bits1(&gb); |
||
961 | |||
962 | /* unknown fields */ |
||
963 | skip_bits1(&gb); |
||
964 | skip_bits1(&gb); |
||
965 | skip_bits1(&gb); |
||
966 | skip_bits1(&gb); |
||
967 | |||
968 | h->low_delay = get_bits1(&gb); |
||
969 | |||
970 | /* unknown field */ |
||
971 | skip_bits1(&gb); |
||
972 | |||
973 | while (get_bits1(&gb)) |
||
974 | skip_bits(&gb, 8); |
||
975 | |||
976 | s->unknown_flag = get_bits1(&gb); |
||
977 | avctx->has_b_frames = !h->low_delay; |
||
978 | if (s->unknown_flag) { |
||
979 | #if CONFIG_ZLIB |
||
980 | unsigned watermark_width = svq3_get_ue_golomb(&gb); |
||
981 | unsigned watermark_height = svq3_get_ue_golomb(&gb); |
||
982 | int u1 = svq3_get_ue_golomb(&gb); |
||
983 | int u2 = get_bits(&gb, 8); |
||
984 | int u3 = get_bits(&gb, 2); |
||
985 | int u4 = svq3_get_ue_golomb(&gb); |
||
986 | unsigned long buf_len = watermark_width * |
||
987 | watermark_height * 4; |
||
988 | int offset = get_bits_count(&gb) + 7 >> 3; |
||
989 | uint8_t *buf; |
||
990 | |||
991 | if (watermark_height <= 0 || |
||
992 | (uint64_t)watermark_width * 4 > UINT_MAX / watermark_height) |
||
993 | return -1; |
||
994 | |||
995 | buf = av_malloc(buf_len); |
||
996 | av_log(avctx, AV_LOG_DEBUG, "watermark size: %dx%d\n", |
||
997 | watermark_width, watermark_height); |
||
998 | av_log(avctx, AV_LOG_DEBUG, |
||
999 | "u1: %x u2: %x u3: %x compressed data size: %d offset: %d\n", |
||
1000 | u1, u2, u3, u4, offset); |
||
1001 | if (uncompress(buf, &buf_len, extradata + 8 + offset, |
||
1002 | size - offset) != Z_OK) { |
||
1003 | av_log(avctx, AV_LOG_ERROR, |
||
1004 | "could not uncompress watermark logo\n"); |
||
1005 | av_free(buf); |
||
1006 | return -1; |
||
1007 | } |
||
1008 | s->watermark_key = ff_svq1_packet_checksum(buf, buf_len, 0); |
||
1009 | s->watermark_key = s->watermark_key << 16 | s->watermark_key; |
||
1010 | av_log(avctx, AV_LOG_DEBUG, |
||
1011 | "watermark key %#x\n", s->watermark_key); |
||
1012 | av_free(buf); |
||
1013 | #else |
||
1014 | av_log(avctx, AV_LOG_ERROR, |
||
1015 | "this svq3 file contains watermark which need zlib support compiled in\n"); |
||
1016 | return -1; |
||
1017 | #endif |
||
1018 | } |
||
1019 | } |
||
1020 | |||
1021 | h->width = avctx->width; |
||
1022 | h->height = avctx->height; |
||
1023 | h->mb_width = (h->width + 15) / 16; |
||
1024 | h->mb_height = (h->height + 15) / 16; |
||
1025 | h->mb_stride = h->mb_width + 1; |
||
1026 | h->mb_num = h->mb_width * h->mb_height; |
||
1027 | h->b_stride = 4 * h->mb_width; |
||
1028 | s->h_edge_pos = h->mb_width * 16; |
||
1029 | s->v_edge_pos = h->mb_height * 16; |
||
1030 | |||
1031 | if (ff_h264_alloc_tables(h) < 0) { |
||
1032 | av_log(avctx, AV_LOG_ERROR, "svq3 memory allocation failed\n"); |
||
1033 | return AVERROR(ENOMEM); |
||
1034 | } |
||
1035 | |||
1036 | return 0; |
||
1037 | } |
||
1038 | |||
1039 | static void free_picture(AVCodecContext *avctx, Picture *pic) |
||
1040 | { |
||
1041 | int i; |
||
1042 | for (i = 0; i < 2; i++) { |
||
1043 | av_buffer_unref(&pic->motion_val_buf[i]); |
||
1044 | av_buffer_unref(&pic->ref_index_buf[i]); |
||
1045 | } |
||
1046 | av_buffer_unref(&pic->mb_type_buf); |
||
1047 | |||
1048 | av_frame_unref(&pic->f); |
||
1049 | } |
||
1050 | |||
1051 | static int get_buffer(AVCodecContext *avctx, Picture *pic) |
||
1052 | { |
||
1053 | SVQ3Context *s = avctx->priv_data; |
||
1054 | H264Context *h = &s->h; |
||
1055 | const int big_mb_num = h->mb_stride * (h->mb_height + 1) + 1; |
||
1056 | const int mb_array_size = h->mb_stride * h->mb_height; |
||
1057 | const int b4_stride = h->mb_width * 4 + 1; |
||
1058 | const int b4_array_size = b4_stride * h->mb_height * 4; |
||
1059 | int ret; |
||
1060 | |||
1061 | if (!pic->motion_val_buf[0]) { |
||
1062 | int i; |
||
1063 | |||
1064 | pic->mb_type_buf = av_buffer_allocz((big_mb_num + h->mb_stride) * sizeof(uint32_t)); |
||
1065 | if (!pic->mb_type_buf) |
||
1066 | return AVERROR(ENOMEM); |
||
1067 | pic->mb_type = (uint32_t*)pic->mb_type_buf->data + 2 * h->mb_stride + 1; |
||
1068 | |||
1069 | for (i = 0; i < 2; i++) { |
||
1070 | pic->motion_val_buf[i] = av_buffer_allocz(2 * (b4_array_size + 4) * sizeof(int16_t)); |
||
1071 | pic->ref_index_buf[i] = av_buffer_allocz(4 * mb_array_size); |
||
1072 | if (!pic->motion_val_buf[i] || !pic->ref_index_buf[i]) { |
||
1073 | ret = AVERROR(ENOMEM); |
||
1074 | goto fail; |
||
1075 | } |
||
1076 | |||
1077 | pic->motion_val[i] = (int16_t (*)[2])pic->motion_val_buf[i]->data + 4; |
||
1078 | pic->ref_index[i] = pic->ref_index_buf[i]->data; |
||
1079 | } |
||
1080 | } |
||
1081 | pic->reference = !(h->pict_type == AV_PICTURE_TYPE_B); |
||
1082 | |||
1083 | ret = ff_get_buffer(avctx, &pic->f, |
||
1084 | pic->reference ? AV_GET_BUFFER_FLAG_REF : 0); |
||
1085 | if (ret < 0) |
||
1086 | goto fail; |
||
1087 | |||
1088 | if (!h->edge_emu_buffer) { |
||
1089 | h->edge_emu_buffer = av_mallocz(pic->f.linesize[0] * 17); |
||
1090 | if (!h->edge_emu_buffer) |
||
1091 | return AVERROR(ENOMEM); |
||
1092 | } |
||
1093 | |||
1094 | h->linesize = pic->f.linesize[0]; |
||
1095 | h->uvlinesize = pic->f.linesize[1]; |
||
1096 | |||
1097 | return 0; |
||
1098 | fail: |
||
1099 | free_picture(avctx, pic); |
||
1100 | return ret; |
||
1101 | } |
||
1102 | |||
1103 | static int svq3_decode_frame(AVCodecContext *avctx, void *data, |
||
1104 | int *got_frame, AVPacket *avpkt) |
||
1105 | { |
||
1106 | SVQ3Context *s = avctx->priv_data; |
||
1107 | H264Context *h = &s->h; |
||
1108 | int buf_size = avpkt->size; |
||
1109 | int left; |
||
1110 | uint8_t *buf; |
||
1111 | int ret, m, i; |
||
1112 | |||
1113 | /* special case for last picture */ |
||
1114 | if (buf_size == 0) { |
||
1115 | if (s->next_pic->f.data[0] && !h->low_delay && !s->last_frame_output) { |
||
1116 | ret = av_frame_ref(data, &s->next_pic->f); |
||
1117 | if (ret < 0) |
||
1118 | return ret; |
||
1119 | s->last_frame_output = 1; |
||
1120 | *got_frame = 1; |
||
1121 | } |
||
1122 | return 0; |
||
1123 | } |
||
1124 | |||
1125 | h->mb_x = h->mb_y = h->mb_xy = 0; |
||
1126 | |||
1127 | if (s->watermark_key) { |
||
1128 | av_fast_malloc(&s->buf, &s->buf_size, |
||
1129 | buf_size+FF_INPUT_BUFFER_PADDING_SIZE); |
||
1130 | if (!s->buf) |
||
1131 | return AVERROR(ENOMEM); |
||
1132 | memcpy(s->buf, avpkt->data, buf_size); |
||
1133 | buf = s->buf; |
||
1134 | } else { |
||
1135 | buf = avpkt->data; |
||
1136 | } |
||
1137 | |||
1138 | init_get_bits(&h->gb, buf, 8 * buf_size); |
||
1139 | |||
1140 | if (svq3_decode_slice_header(avctx)) |
||
1141 | return -1; |
||
1142 | |||
1143 | h->pict_type = h->slice_type; |
||
1144 | |||
1145 | if (h->pict_type != AV_PICTURE_TYPE_B) |
||
1146 | FFSWAP(Picture*, s->next_pic, s->last_pic); |
||
1147 | |||
1148 | av_frame_unref(&s->cur_pic->f); |
||
1149 | |||
1150 | /* for skipping the frame */ |
||
1151 | s->cur_pic->f.pict_type = h->pict_type; |
||
1152 | s->cur_pic->f.key_frame = (h->pict_type == AV_PICTURE_TYPE_I); |
||
1153 | |||
1154 | ret = get_buffer(avctx, s->cur_pic); |
||
1155 | if (ret < 0) |
||
1156 | return ret; |
||
1157 | |||
1158 | h->cur_pic_ptr = s->cur_pic; |
||
1159 | av_frame_unref(&h->cur_pic.f); |
||
1160 | h->cur_pic = *s->cur_pic; |
||
1161 | ret = av_frame_ref(&h->cur_pic.f, &s->cur_pic->f); |
||
1162 | if (ret < 0) |
||
1163 | return ret; |
||
1164 | |||
1165 | for (i = 0; i < 16; i++) { |
||
1166 | h->block_offset[i] = (4 * ((scan8[i] - scan8[0]) & 7)) + 4 * h->linesize * ((scan8[i] - scan8[0]) >> 3); |
||
1167 | h->block_offset[48 + i] = (4 * ((scan8[i] - scan8[0]) & 7)) + 8 * h->linesize * ((scan8[i] - scan8[0]) >> 3); |
||
1168 | } |
||
1169 | for (i = 0; i < 16; i++) { |
||
1170 | h->block_offset[16 + i] = |
||
1171 | h->block_offset[32 + i] = (4 * ((scan8[i] - scan8[0]) & 7)) + 4 * h->uvlinesize * ((scan8[i] - scan8[0]) >> 3); |
||
1172 | h->block_offset[48 + 16 + i] = |
||
1173 | h->block_offset[48 + 32 + i] = (4 * ((scan8[i] - scan8[0]) & 7)) + 8 * h->uvlinesize * ((scan8[i] - scan8[0]) >> 3); |
||
1174 | } |
||
1175 | |||
1176 | if (h->pict_type != AV_PICTURE_TYPE_I) { |
||
1177 | if (!s->last_pic->f.data[0]) { |
||
1178 | av_log(avctx, AV_LOG_ERROR, "Missing reference frame.\n"); |
||
1179 | ret = get_buffer(avctx, s->last_pic); |
||
1180 | if (ret < 0) |
||
1181 | return ret; |
||
1182 | memset(s->last_pic->f.data[0], 0, avctx->height * s->last_pic->f.linesize[0]); |
||
1183 | memset(s->last_pic->f.data[1], 0x80, (avctx->height / 2) * |
||
1184 | s->last_pic->f.linesize[1]); |
||
1185 | memset(s->last_pic->f.data[2], 0x80, (avctx->height / 2) * |
||
1186 | s->last_pic->f.linesize[2]); |
||
1187 | } |
||
1188 | |||
1189 | if (h->pict_type == AV_PICTURE_TYPE_B && !s->next_pic->f.data[0]) { |
||
1190 | av_log(avctx, AV_LOG_ERROR, "Missing reference frame.\n"); |
||
1191 | ret = get_buffer(avctx, s->next_pic); |
||
1192 | if (ret < 0) |
||
1193 | return ret; |
||
1194 | memset(s->next_pic->f.data[0], 0, avctx->height * s->next_pic->f.linesize[0]); |
||
1195 | memset(s->next_pic->f.data[1], 0x80, (avctx->height / 2) * |
||
1196 | s->next_pic->f.linesize[1]); |
||
1197 | memset(s->next_pic->f.data[2], 0x80, (avctx->height / 2) * |
||
1198 | s->next_pic->f.linesize[2]); |
||
1199 | } |
||
1200 | } |
||
1201 | |||
1202 | if (avctx->debug & FF_DEBUG_PICT_INFO) |
||
1203 | av_log(h->avctx, AV_LOG_DEBUG, |
||
1204 | "%c hpel:%d, tpel:%d aqp:%d qp:%d, slice_num:%02X\n", |
||
1205 | av_get_picture_type_char(h->pict_type), |
||
1206 | s->halfpel_flag, s->thirdpel_flag, |
||
1207 | s->adaptive_quant, h->qscale, h->slice_num); |
||
1208 | |||
1209 | if (avctx->skip_frame >= AVDISCARD_NONREF && h->pict_type == AV_PICTURE_TYPE_B || |
||
1210 | avctx->skip_frame >= AVDISCARD_NONKEY && h->pict_type != AV_PICTURE_TYPE_I || |
||
1211 | avctx->skip_frame >= AVDISCARD_ALL) |
||
1212 | return 0; |
||
1213 | |||
1214 | if (s->next_p_frame_damaged) { |
||
1215 | if (h->pict_type == AV_PICTURE_TYPE_B) |
||
1216 | return 0; |
||
1217 | else |
||
1218 | s->next_p_frame_damaged = 0; |
||
1219 | } |
||
1220 | |||
1221 | if (h->pict_type == AV_PICTURE_TYPE_B) { |
||
1222 | h->frame_num_offset = h->slice_num - h->prev_frame_num; |
||
1223 | |||
1224 | if (h->frame_num_offset < 0) |
||
1225 | h->frame_num_offset += 256; |
||
1226 | if (h->frame_num_offset == 0 || |
||
1227 | h->frame_num_offset >= h->prev_frame_num_offset) { |
||
1228 | av_log(h->avctx, AV_LOG_ERROR, "error in B-frame picture id\n"); |
||
1229 | return -1; |
||
1230 | } |
||
1231 | } else { |
||
1232 | h->prev_frame_num = h->frame_num; |
||
1233 | h->frame_num = h->slice_num; |
||
1234 | h->prev_frame_num_offset = h->frame_num - h->prev_frame_num; |
||
1235 | |||
1236 | if (h->prev_frame_num_offset < 0) |
||
1237 | h->prev_frame_num_offset += 256; |
||
1238 | } |
||
1239 | |||
1240 | for (m = 0; m < 2; m++) { |
||
1241 | int i; |
||
1242 | for (i = 0; i < 4; i++) { |
||
1243 | int j; |
||
1244 | for (j = -1; j < 4; j++) |
||
1245 | h->ref_cache[m][scan8[0] + 8 * i + j] = 1; |
||
1246 | if (i < 3) |
||
1247 | h->ref_cache[m][scan8[0] + 8 * i + j] = PART_NOT_AVAILABLE; |
||
1248 | } |
||
1249 | } |
||
1250 | |||
1251 | for (h->mb_y = 0; h->mb_y < h->mb_height; h->mb_y++) { |
||
1252 | for (h->mb_x = 0; h->mb_x < h->mb_width; h->mb_x++) { |
||
1253 | unsigned mb_type; |
||
1254 | h->mb_xy = h->mb_x + h->mb_y * h->mb_stride; |
||
1255 | |||
1256 | if ((get_bits_count(&h->gb) + 7) >= h->gb.size_in_bits && |
||
1257 | ((get_bits_count(&h->gb) & 7) == 0 || |
||
1258 | show_bits(&h->gb, -get_bits_count(&h->gb) & 7) == 0)) { |
||
1259 | skip_bits(&h->gb, s->next_slice_index - get_bits_count(&h->gb)); |
||
1260 | h->gb.size_in_bits = 8 * buf_size; |
||
1261 | |||
1262 | if (svq3_decode_slice_header(avctx)) |
||
1263 | return -1; |
||
1264 | |||
1265 | /* TODO: support s->mb_skip_run */ |
||
1266 | } |
||
1267 | |||
1268 | mb_type = svq3_get_ue_golomb(&h->gb); |
||
1269 | |||
1270 | if (h->pict_type == AV_PICTURE_TYPE_I) |
||
1271 | mb_type += 8; |
||
1272 | else if (h->pict_type == AV_PICTURE_TYPE_B && mb_type >= 4) |
||
1273 | mb_type += 4; |
||
1274 | if (mb_type > 33 || svq3_decode_mb(s, mb_type)) { |
||
1275 | av_log(h->avctx, AV_LOG_ERROR, |
||
1276 | "error while decoding MB %d %d\n", h->mb_x, h->mb_y); |
||
1277 | return -1; |
||
1278 | } |
||
1279 | |||
1280 | if (mb_type != 0 || h->cbp) |
||
1281 | ff_h264_hl_decode_mb(h); |
||
1282 | |||
1283 | if (h->pict_type != AV_PICTURE_TYPE_B && !h->low_delay) |
||
1284 | h->cur_pic.mb_type[h->mb_x + h->mb_y * h->mb_stride] = |
||
1285 | (h->pict_type == AV_PICTURE_TYPE_P && mb_type < 8) ? (mb_type - 1) : -1; |
||
1286 | } |
||
1287 | |||
1288 | ff_draw_horiz_band(avctx, NULL, s->cur_pic, s->last_pic->f.data[0] ? s->last_pic : NULL, |
||
1289 | 16 * h->mb_y, 16, h->picture_structure, 0, 0, |
||
1290 | h->low_delay, h->mb_height * 16, h->mb_width * 16); |
||
1291 | } |
||
1292 | |||
1293 | left = buf_size*8 - get_bits_count(&h->gb); |
||
1294 | |||
1295 | if (h->mb_y != h->mb_height || h->mb_x != h->mb_width) { |
||
1296 | av_log(avctx, AV_LOG_INFO, "frame num %d incomplete pic x %d y %d left %d\n", avctx->frame_number, h->mb_y, h->mb_x, left); |
||
1297 | //av_hex_dump(stderr, buf+buf_size-8, 8); |
||
1298 | } |
||
1299 | |||
1300 | if (left < 0) { |
||
1301 | av_log(avctx, AV_LOG_ERROR, "frame num %d left %d\n", avctx->frame_number, left); |
||
1302 | return -1; |
||
1303 | } |
||
1304 | |||
1305 | if (h->pict_type == AV_PICTURE_TYPE_B || h->low_delay) |
||
1306 | ret = av_frame_ref(data, &s->cur_pic->f); |
||
1307 | else if (s->last_pic->f.data[0]) |
||
1308 | ret = av_frame_ref(data, &s->last_pic->f); |
||
1309 | if (ret < 0) |
||
1310 | return ret; |
||
1311 | |||
1312 | /* Do not output the last pic after seeking. */ |
||
1313 | if (s->last_pic->f.data[0] || h->low_delay) |
||
1314 | *got_frame = 1; |
||
1315 | |||
1316 | if (h->pict_type != AV_PICTURE_TYPE_B) { |
||
1317 | FFSWAP(Picture*, s->cur_pic, s->next_pic); |
||
1318 | } else { |
||
1319 | av_frame_unref(&s->cur_pic->f); |
||
1320 | } |
||
1321 | |||
1322 | return buf_size; |
||
1323 | } |
||
1324 | |||
1325 | static av_cold int svq3_decode_end(AVCodecContext *avctx) |
||
1326 | { |
||
1327 | SVQ3Context *s = avctx->priv_data; |
||
1328 | H264Context *h = &s->h; |
||
1329 | |||
1330 | free_picture(avctx, s->cur_pic); |
||
1331 | free_picture(avctx, s->next_pic); |
||
1332 | free_picture(avctx, s->last_pic); |
||
1333 | av_freep(&s->cur_pic); |
||
1334 | av_freep(&s->next_pic); |
||
1335 | av_freep(&s->last_pic); |
||
1336 | |||
1337 | av_frame_unref(&h->cur_pic.f); |
||
1338 | |||
1339 | ff_h264_free_context(h); |
||
1340 | |||
1341 | av_freep(&s->buf); |
||
1342 | s->buf_size = 0; |
||
1343 | av_freep(&h->edge_emu_buffer); |
||
1344 | |||
1345 | return 0; |
||
1346 | } |
||
1347 | |||
1348 | AVCodec ff_svq3_decoder = { |
||
1349 | .name = "svq3", |
||
1350 | .long_name = NULL_IF_CONFIG_SMALL("Sorenson Vector Quantizer 3 / Sorenson Video 3 / SVQ3"), |
||
1351 | .type = AVMEDIA_TYPE_VIDEO, |
||
1352 | .id = AV_CODEC_ID_SVQ3, |
||
1353 | .priv_data_size = sizeof(SVQ3Context), |
||
1354 | .init = svq3_decode_init, |
||
1355 | .close = svq3_decode_end, |
||
1356 | .decode = svq3_decode_frame, |
||
1357 | .capabilities = CODEC_CAP_DRAW_HORIZ_BAND | |
||
1358 | CODEC_CAP_DR1 | |
||
1359 | CODEC_CAP_DELAY, |
||
1360 | .pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUVJ420P, |
||
1361 | AV_PIX_FMT_NONE}, |
||
1362 | };>>>>>>>>>>>>>>>>>>>>>>><>=>>>>>>>>><>>>>>>>>>>>>>>>>>>>>>>>>>>><>><>>>>>>>>>>>>>>>>>>>>> |