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4349 | Serge | 1 | /* |
2 | * XVID MPEG-4 VIDEO CODEC |
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3 | * - MMX and XMM forward discrete cosine transform - |
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4 | * |
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5 | * Copyright(C) 2001 Peter Ross |
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6 | * |
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7 | * Originally provided by Intel at AP-922 |
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8 | * http://developer.intel.com/vtune/cbts/strmsimd/922down.htm |
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9 | * (See more app notes at http://developer.intel.com/vtune/cbts/strmsimd/appnotes.htm) |
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10 | * but in a limited edition. |
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11 | * New macro implements a column part for precise iDCT |
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12 | * The routine precision now satisfies IEEE standard 1180-1990. |
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13 | * |
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14 | * Copyright(C) 2000-2001 Peter Gubanov |
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15 | * Rounding trick Copyright(C) 2000 Michel Lespinasse |
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16 | * |
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17 | * http://www.elecard.com/peter/idct.html |
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18 | * http://www.linuxvideo.org/mpeg2dec/ |
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19 | * |
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20 | * These examples contain code fragments for first stage iDCT 8x8 |
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21 | * (for rows) and first stage DCT 8x8 (for columns) |
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22 | * |
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23 | * conversion to gcc syntax by Michael Niedermayer |
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24 | * |
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25 | * This file is part of FFmpeg. |
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26 | * |
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27 | * FFmpeg is free software; you can redistribute it and/or |
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28 | * modify it under the terms of the GNU Lesser General Public |
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29 | * License as published by the Free Software Foundation; either |
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30 | * version 2.1 of the License, or (at your option) any later version. |
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31 | * |
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32 | * FFmpeg is distributed in the hope that it will be useful, |
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33 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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34 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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35 | * Lesser General Public License for more details. |
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36 | * |
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37 | * You should have received a copy of the GNU Lesser General Public License |
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38 | * along with FFmpeg; if not, write to the Free Software Foundation, |
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39 | * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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40 | */ |
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41 | |||
42 | #include |
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43 | |||
44 | #include "config.h" |
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45 | #include "libavcodec/avcodec.h" |
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46 | #include "libavutil/mem.h" |
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47 | #include "dsputil_x86.h" |
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48 | #include "idct_xvid.h" |
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49 | |||
50 | #if HAVE_MMX_INLINE |
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51 | |||
52 | //============================================================================= |
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53 | // Macros and other preprocessor constants |
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54 | //============================================================================= |
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55 | |||
56 | #define BITS_INV_ACC 5 // 4 or 5 for IEEE |
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57 | #define SHIFT_INV_ROW (16 - BITS_INV_ACC) //11 |
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58 | #define SHIFT_INV_COL (1 + BITS_INV_ACC) //6 |
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59 | #define RND_INV_ROW (1024 * (6 - BITS_INV_ACC)) |
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60 | #define RND_INV_COL (16 * (BITS_INV_ACC - 3)) |
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61 | #define RND_INV_CORR (RND_INV_COL - 1) |
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62 | |||
63 | #define BITS_FRW_ACC 3 // 2 or 3 for accuracy |
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64 | #define SHIFT_FRW_COL BITS_FRW_ACC |
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65 | #define SHIFT_FRW_ROW (BITS_FRW_ACC + 17) |
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66 | #define RND_FRW_ROW (262144*(BITS_FRW_ACC - 1)) |
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67 | |||
68 | |||
69 | //----------------------------------------------------------------------------- |
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70 | // Various memory constants (trigonometric values or rounding values) |
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71 | //----------------------------------------------------------------------------- |
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72 | |||
73 | |||
74 | DECLARE_ALIGNED(8, static const int16_t, tg_1_16)[4*4] = { |
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75 | 13036,13036,13036,13036, // tg * (2<<16) + 0.5 |
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76 | 27146,27146,27146,27146, // tg * (2<<16) + 0.5 |
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77 | -21746,-21746,-21746,-21746, // tg * (2<<16) + 0.5 |
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78 | 23170,23170,23170,23170}; // cos * (2<<15) + 0.5 |
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79 | |||
80 | DECLARE_ALIGNED(8, static const int32_t, rounder_0)[2*8] = { |
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81 | 65536,65536, |
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82 | 3597,3597, |
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83 | 2260,2260, |
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84 | 1203,1203, |
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85 | 0,0, |
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86 | 120,120, |
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87 | 512,512, |
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88 | 512,512}; |
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89 | |||
90 | //----------------------------------------------------------------------------- |
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91 | // |
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92 | // The first stage iDCT 8x8 - inverse DCTs of rows |
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93 | // |
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94 | //----------------------------------------------------------------------------- |
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95 | // The 8-point inverse DCT direct algorithm |
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96 | //----------------------------------------------------------------------------- |
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97 | // |
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98 | // static const short w[32] = { |
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99 | // FIX(cos_4_16), FIX(cos_2_16), FIX(cos_4_16), FIX(cos_6_16), |
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100 | // FIX(cos_4_16), FIX(cos_6_16), -FIX(cos_4_16), -FIX(cos_2_16), |
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101 | // FIX(cos_4_16), -FIX(cos_6_16), -FIX(cos_4_16), FIX(cos_2_16), |
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102 | // FIX(cos_4_16), -FIX(cos_2_16), FIX(cos_4_16), -FIX(cos_6_16), |
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103 | // FIX(cos_1_16), FIX(cos_3_16), FIX(cos_5_16), FIX(cos_7_16), |
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104 | // FIX(cos_3_16), -FIX(cos_7_16), -FIX(cos_1_16), -FIX(cos_5_16), |
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105 | // FIX(cos_5_16), -FIX(cos_1_16), FIX(cos_7_16), FIX(cos_3_16), |
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106 | // FIX(cos_7_16), -FIX(cos_5_16), FIX(cos_3_16), -FIX(cos_1_16) }; |
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107 | // |
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108 | // #define DCT_8_INV_ROW(x, y) |
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109 | // { |
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110 | // int a0, a1, a2, a3, b0, b1, b2, b3; |
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111 | // |
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112 | // a0 =x[0]*w[0]+x[2]*w[1]+x[4]*w[2]+x[6]*w[3]; |
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113 | // a1 =x[0]*w[4]+x[2]*w[5]+x[4]*w[6]+x[6]*w[7]; |
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114 | // a2 = x[0] * w[ 8] + x[2] * w[ 9] + x[4] * w[10] + x[6] * w[11]; |
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115 | // a3 = x[0] * w[12] + x[2] * w[13] + x[4] * w[14] + x[6] * w[15]; |
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116 | // b0 = x[1] * w[16] + x[3] * w[17] + x[5] * w[18] + x[7] * w[19]; |
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117 | // b1 = x[1] * w[20] + x[3] * w[21] + x[5] * w[22] + x[7] * w[23]; |
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118 | // b2 = x[1] * w[24] + x[3] * w[25] + x[5] * w[26] + x[7] * w[27]; |
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119 | // b3 = x[1] * w[28] + x[3] * w[29] + x[5] * w[30] + x[7] * w[31]; |
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120 | // |
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121 | // y[0] = SHIFT_ROUND ( a0 + b0 ); |
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122 | // y[1] = SHIFT_ROUND ( a1 + b1 ); |
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123 | // y[2] = SHIFT_ROUND ( a2 + b2 ); |
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124 | // y[3] = SHIFT_ROUND ( a3 + b3 ); |
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125 | // y[4] = SHIFT_ROUND ( a3 - b3 ); |
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126 | // y[5] = SHIFT_ROUND ( a2 - b2 ); |
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127 | // y[6] = SHIFT_ROUND ( a1 - b1 ); |
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128 | // y[7] = SHIFT_ROUND ( a0 - b0 ); |
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129 | // } |
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130 | // |
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131 | //----------------------------------------------------------------------------- |
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132 | // |
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133 | // In this implementation the outputs of the iDCT-1D are multiplied |
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134 | // for rows 0,4 - by cos_4_16, |
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135 | // for rows 1,7 - by cos_1_16, |
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136 | // for rows 2,6 - by cos_2_16, |
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137 | // for rows 3,5 - by cos_3_16 |
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138 | // and are shifted to the left for better accuracy |
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139 | // |
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140 | // For the constants used, |
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141 | // FIX(float_const) = (short) (float_const * (1<<15) + 0.5) |
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142 | // |
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143 | //----------------------------------------------------------------------------- |
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144 | |||
145 | //----------------------------------------------------------------------------- |
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146 | // Tables for mmx processors |
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147 | //----------------------------------------------------------------------------- |
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148 | |||
149 | // Table for rows 0,4 - constants are multiplied by cos_4_16 |
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150 | DECLARE_ALIGNED(8, static const int16_t, tab_i_04_mmx)[32*4] = { |
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151 | 16384,16384,16384,-16384, // movq-> w06 w04 w02 w00 |
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152 | 21407,8867,8867,-21407, // w07 w05 w03 w01 |
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153 | 16384,-16384,16384,16384, // w14 w12 w10 w08 |
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154 | -8867,21407,-21407,-8867, // w15 w13 w11 w09 |
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155 | 22725,12873,19266,-22725, // w22 w20 w18 w16 |
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156 | 19266,4520,-4520,-12873, // w23 w21 w19 w17 |
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157 | 12873,4520,4520,19266, // w30 w28 w26 w24 |
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158 | -22725,19266,-12873,-22725, // w31 w29 w27 w25 |
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159 | // Table for rows 1,7 - constants are multiplied by cos_1_16 |
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160 | 22725,22725,22725,-22725, // movq-> w06 w04 w02 w00 |
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161 | 29692,12299,12299,-29692, // w07 w05 w03 w01 |
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162 | 22725,-22725,22725,22725, // w14 w12 w10 w08 |
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163 | -12299,29692,-29692,-12299, // w15 w13 w11 w09 |
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164 | 31521,17855,26722,-31521, // w22 w20 w18 w16 |
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165 | 26722,6270,-6270,-17855, // w23 w21 w19 w17 |
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166 | 17855,6270,6270,26722, // w30 w28 w26 w24 |
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167 | -31521,26722,-17855,-31521, // w31 w29 w27 w25 |
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168 | // Table for rows 2,6 - constants are multiplied by cos_2_16 |
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169 | 21407,21407,21407,-21407, // movq-> w06 w04 w02 w00 |
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170 | 27969,11585,11585,-27969, // w07 w05 w03 w01 |
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171 | 21407,-21407,21407,21407, // w14 w12 w10 w08 |
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172 | -11585,27969,-27969,-11585, // w15 w13 w11 w09 |
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173 | 29692,16819,25172,-29692, // w22 w20 w18 w16 |
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174 | 25172,5906,-5906,-16819, // w23 w21 w19 w17 |
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175 | 16819,5906,5906,25172, // w30 w28 w26 w24 |
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176 | -29692,25172,-16819,-29692, // w31 w29 w27 w25 |
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177 | // Table for rows 3,5 - constants are multiplied by cos_3_16 |
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178 | 19266,19266,19266,-19266, // movq-> w06 w04 w02 w00 |
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179 | 25172,10426,10426,-25172, // w07 w05 w03 w01 |
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180 | 19266,-19266,19266,19266, // w14 w12 w10 w08 |
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181 | -10426,25172,-25172,-10426, // w15 w13 w11 w09 |
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182 | 26722,15137,22654,-26722, // w22 w20 w18 w16 |
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183 | 22654,5315,-5315,-15137, // w23 w21 w19 w17 |
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184 | 15137,5315,5315,22654, // w30 w28 w26 w24 |
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185 | -26722,22654,-15137,-26722, // w31 w29 w27 w25 |
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186 | }; |
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187 | //----------------------------------------------------------------------------- |
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188 | // Tables for xmm processors |
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189 | //----------------------------------------------------------------------------- |
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190 | |||
191 | // %3 for rows 0,4 - constants are multiplied by cos_4_16 |
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192 | DECLARE_ALIGNED(8, static const int16_t, tab_i_04_xmm)[32*4] = { |
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193 | 16384,21407,16384,8867, // movq-> w05 w04 w01 w00 |
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194 | 16384,8867,-16384,-21407, // w07 w06 w03 w02 |
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195 | 16384,-8867,16384,-21407, // w13 w12 w09 w08 |
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196 | -16384,21407,16384,-8867, // w15 w14 w11 w10 |
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197 | 22725,19266,19266,-4520, // w21 w20 w17 w16 |
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198 | 12873,4520,-22725,-12873, // w23 w22 w19 w18 |
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199 | 12873,-22725,4520,-12873, // w29 w28 w25 w24 |
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200 | 4520,19266,19266,-22725, // w31 w30 w27 w26 |
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201 | // %3 for rows 1,7 - constants are multiplied by cos_1_16 |
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202 | 22725,29692,22725,12299, // movq-> w05 w04 w01 w00 |
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203 | 22725,12299,-22725,-29692, // w07 w06 w03 w02 |
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204 | 22725,-12299,22725,-29692, // w13 w12 w09 w08 |
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205 | -22725,29692,22725,-12299, // w15 w14 w11 w10 |
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206 | 31521,26722,26722,-6270, // w21 w20 w17 w16 |
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207 | 17855,6270,-31521,-17855, // w23 w22 w19 w18 |
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208 | 17855,-31521,6270,-17855, // w29 w28 w25 w24 |
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209 | 6270,26722,26722,-31521, // w31 w30 w27 w26 |
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210 | // %3 for rows 2,6 - constants are multiplied by cos_2_16 |
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211 | 21407,27969,21407,11585, // movq-> w05 w04 w01 w00 |
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212 | 21407,11585,-21407,-27969, // w07 w06 w03 w02 |
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213 | 21407,-11585,21407,-27969, // w13 w12 w09 w08 |
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214 | -21407,27969,21407,-11585, // w15 w14 w11 w10 |
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215 | 29692,25172,25172,-5906, // w21 w20 w17 w16 |
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216 | 16819,5906,-29692,-16819, // w23 w22 w19 w18 |
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217 | 16819,-29692,5906,-16819, // w29 w28 w25 w24 |
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218 | 5906,25172,25172,-29692, // w31 w30 w27 w26 |
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219 | // %3 for rows 3,5 - constants are multiplied by cos_3_16 |
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220 | 19266,25172,19266,10426, // movq-> w05 w04 w01 w00 |
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221 | 19266,10426,-19266,-25172, // w07 w06 w03 w02 |
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222 | 19266,-10426,19266,-25172, // w13 w12 w09 w08 |
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223 | -19266,25172,19266,-10426, // w15 w14 w11 w10 |
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224 | 26722,22654,22654,-5315, // w21 w20 w17 w16 |
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225 | 15137,5315,-26722,-15137, // w23 w22 w19 w18 |
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226 | 15137,-26722,5315,-15137, // w29 w28 w25 w24 |
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227 | 5315,22654,22654,-26722, // w31 w30 w27 w26 |
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228 | }; |
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229 | //============================================================================= |
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230 | // Helper macros for the code |
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231 | //============================================================================= |
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232 | |||
233 | //----------------------------------------------------------------------------- |
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234 | // DCT_8_INV_ROW_MMX( INP, OUT, TABLE, ROUNDER |
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235 | //----------------------------------------------------------------------------- |
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236 | |||
237 | #define DCT_8_INV_ROW_MMX(A1,A2,A3,A4)\ |
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238 | "movq " #A1 ",%%mm0 \n\t"/* 0 ; x3 x2 x1 x0*/\ |
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239 | "movq 8+" #A1 ",%%mm1 \n\t"/* 1 ; x7 x6 x5 x4*/\ |
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240 | "movq %%mm0,%%mm2 \n\t"/* 2 ; x3 x2 x1 x0*/\ |
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241 | "movq " #A3 ",%%mm3 \n\t"/* 3 ; w06 w04 w02 w00*/\ |
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242 | "punpcklwd %%mm1,%%mm0 \n\t"/* x5 x1 x4 x0*/\ |
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243 | "movq %%mm0,%%mm5 \n\t"/* 5 ; x5 x1 x4 x0*/\ |
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244 | "punpckldq %%mm0,%%mm0 \n\t"/* x4 x0 x4 x0*/\ |
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245 | "movq 8+" #A3 ",%%mm4 \n\t"/* 4 ; w07 w05 w03 w01*/\ |
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246 | "punpckhwd %%mm1,%%mm2 \n\t"/* 1 ; x7 x3 x6 x2*/\ |
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247 | "pmaddwd %%mm0,%%mm3 \n\t"/* x4*w06+x0*w04 x4*w02+x0*w00*/\ |
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248 | "movq %%mm2,%%mm6 \n\t"/* 6 ; x7 x3 x6 x2*/\ |
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249 | "movq 32+" #A3 ",%%mm1 \n\t"/* 1 ; w22 w20 w18 w16*/\ |
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250 | "punpckldq %%mm2,%%mm2 \n\t"/* x6 x2 x6 x2*/\ |
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251 | "pmaddwd %%mm2,%%mm4 \n\t"/* x6*w07+x2*w05 x6*w03+x2*w01*/\ |
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252 | "punpckhdq %%mm5,%%mm5 \n\t"/* x5 x1 x5 x1*/\ |
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253 | "pmaddwd 16+" #A3 ",%%mm0 \n\t"/* x4*w14+x0*w12 x4*w10+x0*w08*/\ |
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254 | "punpckhdq %%mm6,%%mm6 \n\t"/* x7 x3 x7 x3*/\ |
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255 | "movq 40+" #A3 ",%%mm7 \n\t"/* 7 ; w23 w21 w19 w17*/\ |
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256 | "pmaddwd %%mm5,%%mm1 \n\t"/* x5*w22+x1*w20 x5*w18+x1*w16*/\ |
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257 | "paddd " #A4 ",%%mm3 \n\t"/* +%4*/\ |
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258 | "pmaddwd %%mm6,%%mm7 \n\t"/* x7*w23+x3*w21 x7*w19+x3*w17*/\ |
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259 | "pmaddwd 24+" #A3 ",%%mm2 \n\t"/* x6*w15+x2*w13 x6*w11+x2*w09*/\ |
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260 | "paddd %%mm4,%%mm3 \n\t"/* 4 ; a1=sum(even1) a0=sum(even0)*/\ |
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261 | "pmaddwd 48+" #A3 ",%%mm5 \n\t"/* x5*w30+x1*w28 x5*w26+x1*w24*/\ |
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262 | "movq %%mm3,%%mm4 \n\t"/* 4 ; a1 a0*/\ |
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263 | "pmaddwd 56+" #A3 ",%%mm6 \n\t"/* x7*w31+x3*w29 x7*w27+x3*w25*/\ |
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264 | "paddd %%mm7,%%mm1 \n\t"/* 7 ; b1=sum(odd1) b0=sum(odd0)*/\ |
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265 | "paddd " #A4 ",%%mm0 \n\t"/* +%4*/\ |
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266 | "psubd %%mm1,%%mm3 \n\t"/* a1-b1 a0-b0*/\ |
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267 | "psrad $11,%%mm3 \n\t"/* y6=a1-b1 y7=a0-b0*/\ |
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268 | "paddd %%mm4,%%mm1 \n\t"/* 4 ; a1+b1 a0+b0*/\ |
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269 | "paddd %%mm2,%%mm0 \n\t"/* 2 ; a3=sum(even3) a2=sum(even2)*/\ |
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270 | "psrad $11,%%mm1 \n\t"/* y1=a1+b1 y0=a0+b0*/\ |
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271 | "paddd %%mm6,%%mm5 \n\t"/* 6 ; b3=sum(odd3) b2=sum(odd2)*/\ |
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272 | "movq %%mm0,%%mm4 \n\t"/* 4 ; a3 a2*/\ |
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273 | "paddd %%mm5,%%mm0 \n\t"/* a3+b3 a2+b2*/\ |
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274 | "psubd %%mm5,%%mm4 \n\t"/* 5 ; a3-b3 a2-b2*/\ |
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275 | "psrad $11,%%mm0 \n\t"/* y3=a3+b3 y2=a2+b2*/\ |
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276 | "psrad $11,%%mm4 \n\t"/* y4=a3-b3 y5=a2-b2*/\ |
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277 | "packssdw %%mm0,%%mm1 \n\t"/* 0 ; y3 y2 y1 y0*/\ |
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278 | "packssdw %%mm3,%%mm4 \n\t"/* 3 ; y6 y7 y4 y5*/\ |
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279 | "movq %%mm4,%%mm7 \n\t"/* 7 ; y6 y7 y4 y5*/\ |
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280 | "psrld $16,%%mm4 \n\t"/* 0 y6 0 y4*/\ |
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281 | "pslld $16,%%mm7 \n\t"/* y7 0 y5 0*/\ |
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282 | "movq %%mm1," #A2 " \n\t"/* 1 ; save y3 y2 y1 y0*/\ |
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283 | "por %%mm4,%%mm7 \n\t"/* 4 ; y7 y6 y5 y4*/\ |
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284 | "movq %%mm7,8 +" #A2 "\n\t"/* 7 ; save y7 y6 y5 y4*/\ |
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285 | |||
286 | |||
287 | //----------------------------------------------------------------------------- |
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288 | // DCT_8_INV_ROW_XMM( INP, OUT, TABLE, ROUNDER |
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289 | //----------------------------------------------------------------------------- |
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290 | |||
291 | #define DCT_8_INV_ROW_XMM(A1,A2,A3,A4)\ |
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292 | "movq " #A1 ",%%mm0 \n\t"/* 0 ; x3 x2 x1 x0*/\ |
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293 | "movq 8+" #A1 ",%%mm1 \n\t"/* 1 ; x7 x6 x5 x4*/\ |
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294 | "movq %%mm0,%%mm2 \n\t"/* 2 ; x3 x2 x1 x0*/\ |
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295 | "movq " #A3 ",%%mm3 \n\t"/* 3 ; w05 w04 w01 w00*/\ |
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296 | "pshufw $0x88,%%mm0,%%mm0 \n\t"/* x2 x0 x2 x0*/\ |
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297 | "movq 8+" #A3 ",%%mm4 \n\t"/* 4 ; w07 w06 w03 w02*/\ |
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298 | "movq %%mm1,%%mm5 \n\t"/* 5 ; x7 x6 x5 x4*/\ |
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299 | "pmaddwd %%mm0,%%mm3 \n\t"/* x2*w05+x0*w04 x2*w01+x0*w00*/\ |
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300 | "movq 32+" #A3 ",%%mm6 \n\t"/* 6 ; w21 w20 w17 w16*/\ |
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301 | "pshufw $0x88,%%mm1,%%mm1 \n\t"/* x6 x4 x6 x4*/\ |
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302 | "pmaddwd %%mm1,%%mm4 \n\t"/* x6*w07+x4*w06 x6*w03+x4*w02*/\ |
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303 | "movq 40+" #A3 ",%%mm7 \n\t"/* 7 ; w23 w22 w19 w18*/\ |
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304 | "pshufw $0xdd,%%mm2,%%mm2 \n\t"/* x3 x1 x3 x1*/\ |
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305 | "pmaddwd %%mm2,%%mm6 \n\t"/* x3*w21+x1*w20 x3*w17+x1*w16*/\ |
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306 | "pshufw $0xdd,%%mm5,%%mm5 \n\t"/* x7 x5 x7 x5*/\ |
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307 | "pmaddwd %%mm5,%%mm7 \n\t"/* x7*w23+x5*w22 x7*w19+x5*w18*/\ |
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308 | "paddd " #A4 ",%%mm3 \n\t"/* +%4*/\ |
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309 | "pmaddwd 16+" #A3 ",%%mm0 \n\t"/* x2*w13+x0*w12 x2*w09+x0*w08*/\ |
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310 | "paddd %%mm4,%%mm3 \n\t"/* 4 ; a1=sum(even1) a0=sum(even0)*/\ |
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311 | "pmaddwd 24+" #A3 ",%%mm1 \n\t"/* x6*w15+x4*w14 x6*w11+x4*w10*/\ |
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312 | "movq %%mm3,%%mm4 \n\t"/* 4 ; a1 a0*/\ |
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313 | "pmaddwd 48+" #A3 ",%%mm2 \n\t"/* x3*w29+x1*w28 x3*w25+x1*w24*/\ |
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314 | "paddd %%mm7,%%mm6 \n\t"/* 7 ; b1=sum(odd1) b0=sum(odd0)*/\ |
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315 | "pmaddwd 56+" #A3 ",%%mm5 \n\t"/* x7*w31+x5*w30 x7*w27+x5*w26*/\ |
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316 | "paddd %%mm6,%%mm3 \n\t"/* a1+b1 a0+b0*/\ |
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317 | "paddd " #A4 ",%%mm0 \n\t"/* +%4*/\ |
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318 | "psrad $11,%%mm3 \n\t"/* y1=a1+b1 y0=a0+b0*/\ |
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319 | "paddd %%mm1,%%mm0 \n\t"/* 1 ; a3=sum(even3) a2=sum(even2)*/\ |
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320 | "psubd %%mm6,%%mm4 \n\t"/* 6 ; a1-b1 a0-b0*/\ |
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321 | "movq %%mm0,%%mm7 \n\t"/* 7 ; a3 a2*/\ |
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322 | "paddd %%mm5,%%mm2 \n\t"/* 5 ; b3=sum(odd3) b2=sum(odd2)*/\ |
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323 | "paddd %%mm2,%%mm0 \n\t"/* a3+b3 a2+b2*/\ |
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324 | "psrad $11,%%mm4 \n\t"/* y6=a1-b1 y7=a0-b0*/\ |
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325 | "psubd %%mm2,%%mm7 \n\t"/* 2 ; a3-b3 a2-b2*/\ |
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326 | "psrad $11,%%mm0 \n\t"/* y3=a3+b3 y2=a2+b2*/\ |
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327 | "psrad $11,%%mm7 \n\t"/* y4=a3-b3 y5=a2-b2*/\ |
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328 | "packssdw %%mm0,%%mm3 \n\t"/* 0 ; y3 y2 y1 y0*/\ |
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329 | "packssdw %%mm4,%%mm7 \n\t"/* 4 ; y6 y7 y4 y5*/\ |
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330 | "movq %%mm3, " #A2 " \n\t"/* 3 ; save y3 y2 y1 y0*/\ |
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331 | "pshufw $0xb1,%%mm7,%%mm7 \n\t"/* y7 y6 y5 y4*/\ |
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332 | "movq %%mm7,8 +" #A2 "\n\t"/* 7 ; save y7 y6 y5 y4*/\ |
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333 | |||
334 | |||
335 | //----------------------------------------------------------------------------- |
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336 | // |
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337 | // The first stage DCT 8x8 - forward DCTs of columns |
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338 | // |
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339 | // The %2puts are multiplied |
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340 | // for rows 0,4 - on cos_4_16, |
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341 | // for rows 1,7 - on cos_1_16, |
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342 | // for rows 2,6 - on cos_2_16, |
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343 | // for rows 3,5 - on cos_3_16 |
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344 | // and are shifted to the left for rise of accuracy |
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345 | // |
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346 | //----------------------------------------------------------------------------- |
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347 | // |
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348 | // The 8-point scaled forward DCT algorithm (26a8m) |
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349 | // |
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350 | //----------------------------------------------------------------------------- |
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351 | // |
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352 | // #define DCT_8_FRW_COL(x, y) |
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353 | //{ |
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354 | // short t0, t1, t2, t3, t4, t5, t6, t7; |
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355 | // short tp03, tm03, tp12, tm12, tp65, tm65; |
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356 | // short tp465, tm465, tp765, tm765; |
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357 | // |
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358 | // t0 = LEFT_SHIFT ( x[0] + x[7] ); |
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359 | // t1 = LEFT_SHIFT ( x[1] + x[6] ); |
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360 | // t2 = LEFT_SHIFT ( x[2] + x[5] ); |
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361 | // t3 = LEFT_SHIFT ( x[3] + x[4] ); |
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362 | // t4 = LEFT_SHIFT ( x[3] - x[4] ); |
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363 | // t5 = LEFT_SHIFT ( x[2] - x[5] ); |
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364 | // t6 = LEFT_SHIFT ( x[1] - x[6] ); |
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365 | // t7 = LEFT_SHIFT ( x[0] - x[7] ); |
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366 | // |
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367 | // tp03 = t0 + t3; |
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368 | // tm03 = t0 - t3; |
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369 | // tp12 = t1 + t2; |
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370 | // tm12 = t1 - t2; |
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371 | // |
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372 | // y[0] = tp03 + tp12; |
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373 | // y[4] = tp03 - tp12; |
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374 | // |
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375 | // y[2] = tm03 + tm12 * tg_2_16; |
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376 | // y[6] = tm03 * tg_2_16 - tm12; |
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377 | // |
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378 | // tp65 =(t6 +t5 )*cos_4_16; |
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379 | // tm65 =(t6 -t5 )*cos_4_16; |
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380 | // |
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381 | // tp765 = t7 + tp65; |
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382 | // tm765 = t7 - tp65; |
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383 | // tp465 = t4 + tm65; |
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384 | // tm465 = t4 - tm65; |
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385 | // |
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386 | // y[1] = tp765 + tp465 * tg_1_16; |
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387 | // y[7] = tp765 * tg_1_16 - tp465; |
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388 | // y[5] = tm765 * tg_3_16 + tm465; |
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389 | // y[3] = tm765 - tm465 * tg_3_16; |
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390 | //} |
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391 | // |
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392 | //----------------------------------------------------------------------------- |
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393 | |||
394 | //----------------------------------------------------------------------------- |
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395 | // DCT_8_INV_COL_4 INP,OUT |
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396 | //----------------------------------------------------------------------------- |
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397 | |||
398 | #define DCT_8_INV_COL(A1,A2)\ |
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399 | "movq 2*8(%3),%%mm0\n\t"\ |
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400 | "movq 16*3+" #A1 ",%%mm3\n\t"\ |
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401 | "movq %%mm0,%%mm1 \n\t"/* tg_3_16*/\ |
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402 | "movq 16*5+" #A1 ",%%mm5\n\t"\ |
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403 | "pmulhw %%mm3,%%mm0 \n\t"/* x3*(tg_3_16-1)*/\ |
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404 | "movq (%3),%%mm4\n\t"\ |
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405 | "pmulhw %%mm5,%%mm1 \n\t"/* x5*(tg_3_16-1)*/\ |
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406 | "movq 16*7+" #A1 ",%%mm7\n\t"\ |
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407 | "movq %%mm4,%%mm2 \n\t"/* tg_1_16*/\ |
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408 | "movq 16*1+" #A1 ",%%mm6\n\t"\ |
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409 | "pmulhw %%mm7,%%mm4 \n\t"/* x7*tg_1_16*/\ |
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410 | "paddsw %%mm3,%%mm0 \n\t"/* x3*tg_3_16*/\ |
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411 | "pmulhw %%mm6,%%mm2 \n\t"/* x1*tg_1_16*/\ |
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412 | "paddsw %%mm3,%%mm1 \n\t"/* x3+x5*(tg_3_16-1)*/\ |
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413 | "psubsw %%mm5,%%mm0 \n\t"/* x3*tg_3_16-x5 = tm35*/\ |
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414 | "movq 3*8(%3),%%mm3\n\t"\ |
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415 | "paddsw %%mm5,%%mm1 \n\t"/* x3+x5*tg_3_16 = tp35*/\ |
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416 | "paddsw %%mm6,%%mm4 \n\t"/* x1+tg_1_16*x7 = tp17*/\ |
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417 | "psubsw %%mm7,%%mm2 \n\t"/* x1*tg_1_16-x7 = tm17*/\ |
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418 | "movq %%mm4,%%mm5 \n\t"/* tp17*/\ |
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419 | "movq %%mm2,%%mm6 \n\t"/* tm17*/\ |
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420 | "paddsw %%mm1,%%mm5 \n\t"/* tp17+tp35 = b0*/\ |
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421 | "psubsw %%mm0,%%mm6 \n\t"/* tm17-tm35 = b3*/\ |
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422 | "psubsw %%mm1,%%mm4 \n\t"/* tp17-tp35 = t1*/\ |
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423 | "paddsw %%mm0,%%mm2 \n\t"/* tm17+tm35 = t2*/\ |
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424 | "movq 1*8(%3),%%mm7\n\t"\ |
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425 | "movq %%mm4,%%mm1 \n\t"/* t1*/\ |
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426 | "movq %%mm5,3*16 +" #A2 "\n\t"/* save b0*/\ |
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427 | "paddsw %%mm2,%%mm1 \n\t"/* t1+t2*/\ |
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428 | "movq %%mm6,5*16 +" #A2 "\n\t"/* save b3*/\ |
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429 | "psubsw %%mm2,%%mm4 \n\t"/* t1-t2*/\ |
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430 | "movq 2*16+" #A1 ",%%mm5\n\t"\ |
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431 | "movq %%mm7,%%mm0 \n\t"/* tg_2_16*/\ |
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432 | "movq 6*16+" #A1 ",%%mm6\n\t"\ |
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433 | "pmulhw %%mm5,%%mm0 \n\t"/* x2*tg_2_16*/\ |
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434 | "pmulhw %%mm6,%%mm7 \n\t"/* x6*tg_2_16*/\ |
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435 | "pmulhw %%mm3,%%mm1 \n\t"/* ocos_4_16*(t1+t2) = b1/2*/\ |
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436 | "movq 0*16+" #A1 ",%%mm2\n\t"\ |
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437 | "pmulhw %%mm3,%%mm4 \n\t"/* ocos_4_16*(t1-t2) = b2/2*/\ |
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438 | "psubsw %%mm6,%%mm0 \n\t"/* t2*tg_2_16-x6 = tm26*/\ |
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439 | "movq %%mm2,%%mm3 \n\t"/* x0*/\ |
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440 | "movq 4*16+" #A1 ",%%mm6\n\t"\ |
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441 | "paddsw %%mm5,%%mm7 \n\t"/* x2+x6*tg_2_16 = tp26*/\ |
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442 | "paddsw %%mm6,%%mm2 \n\t"/* x0+x4 = tp04*/\ |
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443 | "psubsw %%mm6,%%mm3 \n\t"/* x0-x4 = tm04*/\ |
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444 | "movq %%mm2,%%mm5 \n\t"/* tp04*/\ |
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445 | "movq %%mm3,%%mm6 \n\t"/* tm04*/\ |
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446 | "psubsw %%mm7,%%mm2 \n\t"/* tp04-tp26 = a3*/\ |
||
447 | "paddsw %%mm0,%%mm3 \n\t"/* tm04+tm26 = a1*/\ |
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448 | "paddsw %%mm1,%%mm1 \n\t"/* b1*/\ |
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449 | "paddsw %%mm4,%%mm4 \n\t"/* b2*/\ |
||
450 | "paddsw %%mm7,%%mm5 \n\t"/* tp04+tp26 = a0*/\ |
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451 | "psubsw %%mm0,%%mm6 \n\t"/* tm04-tm26 = a2*/\ |
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452 | "movq %%mm3,%%mm7 \n\t"/* a1*/\ |
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453 | "movq %%mm6,%%mm0 \n\t"/* a2*/\ |
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454 | "paddsw %%mm1,%%mm3 \n\t"/* a1+b1*/\ |
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455 | "paddsw %%mm4,%%mm6 \n\t"/* a2+b2*/\ |
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456 | "psraw $6,%%mm3 \n\t"/* dst1*/\ |
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457 | "psubsw %%mm1,%%mm7 \n\t"/* a1-b1*/\ |
||
458 | "psraw $6,%%mm6 \n\t"/* dst2*/\ |
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459 | "psubsw %%mm4,%%mm0 \n\t"/* a2-b2*/\ |
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460 | "movq 3*16+" #A2 ",%%mm1 \n\t"/* load b0*/\ |
||
461 | "psraw $6,%%mm7 \n\t"/* dst6*/\ |
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462 | "movq %%mm5,%%mm4 \n\t"/* a0*/\ |
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463 | "psraw $6,%%mm0 \n\t"/* dst5*/\ |
||
464 | "movq %%mm3,1*16+" #A2 "\n\t"\ |
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465 | "paddsw %%mm1,%%mm5 \n\t"/* a0+b0*/\ |
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466 | "movq %%mm6,2*16+" #A2 "\n\t"\ |
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467 | "psubsw %%mm1,%%mm4 \n\t"/* a0-b0*/\ |
||
468 | "movq 5*16+" #A2 ",%%mm3 \n\t"/* load b3*/\ |
||
469 | "psraw $6,%%mm5 \n\t"/* dst0*/\ |
||
470 | "movq %%mm2,%%mm6 \n\t"/* a3*/\ |
||
471 | "psraw $6,%%mm4 \n\t"/* dst7*/\ |
||
472 | "movq %%mm0,5*16+" #A2 "\n\t"\ |
||
473 | "paddsw %%mm3,%%mm2 \n\t"/* a3+b3*/\ |
||
474 | "movq %%mm7,6*16+" #A2 "\n\t"\ |
||
475 | "psubsw %%mm3,%%mm6 \n\t"/* a3-b3*/\ |
||
476 | "movq %%mm5,0*16+" #A2 "\n\t"\ |
||
477 | "psraw $6,%%mm2 \n\t"/* dst3*/\ |
||
478 | "movq %%mm4,7*16+" #A2 "\n\t"\ |
||
479 | "psraw $6,%%mm6 \n\t"/* dst4*/\ |
||
480 | "movq %%mm2,3*16+" #A2 "\n\t"\ |
||
481 | "movq %%mm6,4*16+" #A2 "\n\t" |
||
482 | |||
483 | //============================================================================= |
||
484 | // Code |
||
485 | //============================================================================= |
||
486 | |||
487 | //----------------------------------------------------------------------------- |
||
488 | // void idct_mmx(uint16_t block[64]); |
||
489 | //----------------------------------------------------------------------------- |
||
490 | |||
491 | |||
492 | void ff_idct_xvid_mmx(short *block){ |
||
493 | __asm__ volatile( |
||
494 | //# Process each row |
||
495 | DCT_8_INV_ROW_MMX(0*16(%0), 0*16(%0), 64*0(%2), 8*0(%1)) |
||
496 | DCT_8_INV_ROW_MMX(1*16(%0), 1*16(%0), 64*1(%2), 8*1(%1)) |
||
497 | DCT_8_INV_ROW_MMX(2*16(%0), 2*16(%0), 64*2(%2), 8*2(%1)) |
||
498 | DCT_8_INV_ROW_MMX(3*16(%0), 3*16(%0), 64*3(%2), 8*3(%1)) |
||
499 | DCT_8_INV_ROW_MMX(4*16(%0), 4*16(%0), 64*0(%2), 8*4(%1)) |
||
500 | DCT_8_INV_ROW_MMX(5*16(%0), 5*16(%0), 64*3(%2), 8*5(%1)) |
||
501 | DCT_8_INV_ROW_MMX(6*16(%0), 6*16(%0), 64*2(%2), 8*6(%1)) |
||
502 | DCT_8_INV_ROW_MMX(7*16(%0), 7*16(%0), 64*1(%2), 8*7(%1)) |
||
503 | |||
504 | //# Process the columns (4 at a time) |
||
505 | DCT_8_INV_COL(0(%0), 0(%0)) |
||
506 | DCT_8_INV_COL(8(%0), 8(%0)) |
||
507 | :: "r"(block), "r"(rounder_0), "r"(tab_i_04_mmx), "r"(tg_1_16)); |
||
508 | } |
||
509 | |||
510 | void ff_idct_xvid_mmx_put(uint8_t *dest, int line_size, int16_t *block) |
||
511 | { |
||
512 | ff_idct_xvid_mmx(block); |
||
513 | ff_put_pixels_clamped_mmx(block, dest, line_size); |
||
514 | } |
||
515 | |||
516 | void ff_idct_xvid_mmx_add(uint8_t *dest, int line_size, int16_t *block) |
||
517 | { |
||
518 | ff_idct_xvid_mmx(block); |
||
519 | ff_add_pixels_clamped_mmx(block, dest, line_size); |
||
520 | } |
||
521 | |||
522 | #endif /* HAVE_MMX_INLINE */ |
||
523 | |||
524 | #if HAVE_MMXEXT_INLINE |
||
525 | |||
526 | //----------------------------------------------------------------------------- |
||
527 | // void idct_xmm(uint16_t block[64]); |
||
528 | //----------------------------------------------------------------------------- |
||
529 | |||
530 | |||
531 | void ff_idct_xvid_mmxext(short *block) |
||
532 | { |
||
533 | __asm__ volatile( |
||
534 | //# Process each row |
||
535 | DCT_8_INV_ROW_XMM(0*16(%0), 0*16(%0), 64*0(%2), 8*0(%1)) |
||
536 | DCT_8_INV_ROW_XMM(1*16(%0), 1*16(%0), 64*1(%2), 8*1(%1)) |
||
537 | DCT_8_INV_ROW_XMM(2*16(%0), 2*16(%0), 64*2(%2), 8*2(%1)) |
||
538 | DCT_8_INV_ROW_XMM(3*16(%0), 3*16(%0), 64*3(%2), 8*3(%1)) |
||
539 | DCT_8_INV_ROW_XMM(4*16(%0), 4*16(%0), 64*0(%2), 8*4(%1)) |
||
540 | DCT_8_INV_ROW_XMM(5*16(%0), 5*16(%0), 64*3(%2), 8*5(%1)) |
||
541 | DCT_8_INV_ROW_XMM(6*16(%0), 6*16(%0), 64*2(%2), 8*6(%1)) |
||
542 | DCT_8_INV_ROW_XMM(7*16(%0), 7*16(%0), 64*1(%2), 8*7(%1)) |
||
543 | |||
544 | //# Process the columns (4 at a time) |
||
545 | DCT_8_INV_COL(0(%0), 0(%0)) |
||
546 | DCT_8_INV_COL(8(%0), 8(%0)) |
||
547 | :: "r"(block), "r"(rounder_0), "r"(tab_i_04_xmm), "r"(tg_1_16)); |
||
548 | } |
||
549 | |||
550 | void ff_idct_xvid_mmxext_put(uint8_t *dest, int line_size, int16_t *block) |
||
551 | { |
||
552 | ff_idct_xvid_mmxext(block); |
||
553 | ff_put_pixels_clamped_mmx(block, dest, line_size); |
||
554 | } |
||
555 | |||
556 | void ff_idct_xvid_mmxext_add(uint8_t *dest, int line_size, int16_t *block) |
||
557 | { |
||
558 | ff_idct_xvid_mmxext(block); |
||
559 | ff_add_pixels_clamped_mmx(block, dest, line_size); |
||
560 | } |
||
561 | |||
562 | #endif /* HAVE_MMXEXT_INLINE */15)><15)>15)><15)>16)><16)>16)><16)>16)><16)> |