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Rev | Author | Line No. | Line |
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6147 | serge | 1 | /* |
2 | * Copyright (c) 2002 Brian Foley |
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3 | * Copyright (c) 2002 Dieter Shirley |
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4 | * Copyright (c) 2003-2004 Romain Dolbeau |
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5 | * |
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6 | * This file is part of FFmpeg. |
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7 | * |
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8 | * FFmpeg is free software; you can redistribute it and/or |
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9 | * modify it under the terms of the GNU Lesser General Public |
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10 | * License as published by the Free Software Foundation; either |
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11 | * version 2.1 of the License, or (at your option) any later version. |
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12 | * |
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13 | * FFmpeg is distributed in the hope that it will be useful, |
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14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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16 | * Lesser General Public License for more details. |
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17 | * |
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18 | * You should have received a copy of the GNU Lesser General Public |
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19 | * License along with FFmpeg; if not, write to the Free Software |
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20 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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21 | */ |
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22 | |||
23 | #include "config.h" |
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24 | #if HAVE_ALTIVEC_H |
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25 | #include |
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26 | #endif |
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27 | |||
28 | #include "libavutil/attributes.h" |
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29 | #include "libavutil/cpu.h" |
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30 | #include "libavutil/ppc/cpu.h" |
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31 | #include "libavutil/ppc/types_altivec.h" |
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32 | #include "libavutil/ppc/util_altivec.h" |
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33 | #include "libavcodec/avcodec.h" |
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34 | #include "libavcodec/mpegvideo.h" |
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35 | #include "libavcodec/me_cmp.h" |
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36 | |||
37 | #if HAVE_ALTIVEC |
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38 | |||
39 | #if HAVE_BIGENDIAN |
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40 | #define GET_PERM(per1, per2, pix) {\ |
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41 | per1 = vec_lvsl(0, pix);\ |
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42 | per2 = vec_add(per1, vec_splat_u8(1));\ |
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43 | } |
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44 | #define LOAD_PIX(v, iv, pix, per1, per2) {\ |
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45 | vector unsigned char pix2l = vec_ld(0, pix);\ |
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46 | vector unsigned char pix2r = vec_ld(16, pix);\ |
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47 | v = vec_perm(pix2l, pix2r, per1);\ |
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48 | iv = vec_perm(pix2l, pix2r, per2);\ |
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49 | } |
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50 | #else |
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51 | #define GET_PERM(per1, per2, pix) {} |
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52 | #define LOAD_PIX(v, iv, pix, per1, per2) {\ |
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53 | v = vec_vsx_ld(0, pix);\ |
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54 | iv = vec_vsx_ld(1, pix);\ |
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55 | } |
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56 | #endif |
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57 | static int sad16_x2_altivec(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2, |
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58 | ptrdiff_t stride, int h) |
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59 | { |
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60 | int i; |
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61 | int __attribute__((aligned(16))) s = 0; |
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62 | const vector unsigned char zero = |
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63 | (const vector unsigned char) vec_splat_u8(0); |
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64 | vector unsigned int sad = (vector unsigned int) vec_splat_u32(0); |
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65 | vector signed int sumdiffs; |
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66 | vector unsigned char perm1, perm2, pix2v, pix2iv; |
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67 | |||
68 | GET_PERM(perm1, perm2, pix2); |
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69 | for (i = 0; i < h; i++) { |
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70 | /* Read unaligned pixels into our vectors. The vectors are as follows: |
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71 | * pix1v: pix1[0] - pix1[15] |
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72 | * pix2v: pix2[0] - pix2[15] pix2iv: pix2[1] - pix2[16] */ |
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73 | vector unsigned char pix1v = vec_ld(0, pix1); |
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74 | LOAD_PIX(pix2v, pix2iv, pix2, perm1, perm2); |
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75 | |||
76 | /* Calculate the average vector. */ |
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77 | vector unsigned char avgv = vec_avg(pix2v, pix2iv); |
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78 | |||
79 | /* Calculate a sum of abs differences vector. */ |
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80 | vector unsigned char t5 = vec_sub(vec_max(pix1v, avgv), |
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81 | vec_min(pix1v, avgv)); |
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82 | |||
83 | /* Add each 4 pixel group together and put 4 results into sad. */ |
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84 | sad = vec_sum4s(t5, sad); |
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85 | |||
86 | pix1 += stride; |
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87 | pix2 += stride; |
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88 | } |
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89 | /* Sum up the four partial sums, and put the result into s. */ |
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90 | sumdiffs = vec_sums((vector signed int) sad, (vector signed int) zero); |
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91 | sumdiffs = vec_splat(sumdiffs, 3); |
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92 | vec_ste(sumdiffs, 0, &s); |
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93 | |||
94 | return s; |
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95 | } |
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96 | |||
97 | static int sad16_y2_altivec(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2, |
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98 | ptrdiff_t stride, int h) |
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99 | { |
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100 | int i; |
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101 | int __attribute__((aligned(16))) s = 0; |
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102 | const vector unsigned char zero = |
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103 | (const vector unsigned char) vec_splat_u8(0); |
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104 | vector unsigned char pix1v, pix3v, avgv, t5; |
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105 | vector unsigned int sad = (vector unsigned int) vec_splat_u32(0); |
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106 | vector signed int sumdiffs; |
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107 | |||
108 | uint8_t *pix3 = pix2 + stride; |
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109 | |||
110 | /* Due to the fact that pix3 = pix2 + stride, the pix3 of one |
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111 | * iteration becomes pix2 in the next iteration. We can use this |
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112 | * fact to avoid a potentially expensive unaligned read, each |
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113 | * time around the loop. |
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114 | * Read unaligned pixels into our vectors. The vectors are as follows: |
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115 | * pix2v: pix2[0] - pix2[15] |
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116 | * Split the pixel vectors into shorts. */ |
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117 | vector unsigned char pix2v = VEC_LD(0, pix2); |
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118 | |||
119 | for (i = 0; i < h; i++) { |
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120 | /* Read unaligned pixels into our vectors. The vectors are as follows: |
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121 | * pix1v: pix1[0] - pix1[15] |
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122 | * pix3v: pix3[0] - pix3[15] */ |
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123 | pix1v = vec_ld(0, pix1); |
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124 | pix3v = VEC_LD(0, pix3); |
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125 | |||
126 | /* Calculate the average vector. */ |
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127 | avgv = vec_avg(pix2v, pix3v); |
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128 | |||
129 | /* Calculate a sum of abs differences vector. */ |
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130 | t5 = vec_sub(vec_max(pix1v, avgv), vec_min(pix1v, avgv)); |
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131 | |||
132 | /* Add each 4 pixel group together and put 4 results into sad. */ |
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133 | sad = vec_sum4s(t5, sad); |
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134 | |||
135 | pix1 += stride; |
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136 | pix2v = pix3v; |
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137 | pix3 += stride; |
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138 | } |
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139 | |||
140 | /* Sum up the four partial sums, and put the result into s. */ |
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141 | sumdiffs = vec_sums((vector signed int) sad, (vector signed int) zero); |
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142 | sumdiffs = vec_splat(sumdiffs, 3); |
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143 | vec_ste(sumdiffs, 0, &s); |
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144 | return s; |
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145 | } |
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146 | |||
147 | static int sad16_xy2_altivec(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2, |
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148 | ptrdiff_t stride, int h) |
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149 | { |
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150 | int i; |
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151 | int __attribute__((aligned(16))) s = 0; |
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152 | uint8_t *pix3 = pix2 + stride; |
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153 | const vector unsigned char zero = |
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154 | (const vector unsigned char) vec_splat_u8(0); |
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155 | const vector unsigned short two = |
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156 | (const vector unsigned short) vec_splat_u16(2); |
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157 | vector unsigned char avgv, t5; |
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158 | vector unsigned char pix1v, pix3v, pix3iv; |
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159 | vector unsigned short pix3lv, pix3hv, pix3ilv, pix3ihv; |
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160 | vector unsigned short avghv, avglv; |
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161 | vector unsigned int sad = (vector unsigned int) vec_splat_u32(0); |
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162 | vector signed int sumdiffs; |
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163 | vector unsigned char perm1, perm2, pix2v, pix2iv; |
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164 | GET_PERM(perm1, perm2, pix2); |
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165 | |||
166 | /* Due to the fact that pix3 = pix2 + stride, the pix3 of one |
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167 | * iteration becomes pix2 in the next iteration. We can use this |
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168 | * fact to avoid a potentially expensive unaligned read, as well |
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169 | * as some splitting, and vector addition each time around the loop. |
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170 | * Read unaligned pixels into our vectors. The vectors are as follows: |
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171 | * pix2v: pix2[0] - pix2[15] pix2iv: pix2[1] - pix2[16] |
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172 | * Split the pixel vectors into shorts. */ |
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173 | LOAD_PIX(pix2v, pix2iv, pix2, perm1, perm2); |
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174 | vector unsigned short pix2hv = |
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175 | (vector unsigned short) VEC_MERGEH(zero, pix2v); |
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176 | vector unsigned short pix2lv = |
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177 | (vector unsigned short) VEC_MERGEL(zero, pix2v); |
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178 | vector unsigned short pix2ihv = |
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179 | (vector unsigned short) VEC_MERGEH(zero, pix2iv); |
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180 | vector unsigned short pix2ilv = |
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181 | (vector unsigned short) VEC_MERGEL(zero, pix2iv); |
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182 | |||
183 | vector unsigned short t1 = vec_add(pix2hv, pix2ihv); |
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184 | vector unsigned short t2 = vec_add(pix2lv, pix2ilv); |
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185 | vector unsigned short t3, t4; |
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186 | |||
187 | for (i = 0; i < h; i++) { |
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188 | /* Read unaligned pixels into our vectors. The vectors are as follows: |
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189 | * pix1v: pix1[0] - pix1[15] |
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190 | * pix3v: pix3[0] - pix3[15] pix3iv: pix3[1] - pix3[16] */ |
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191 | pix1v = vec_ld(0, pix1); |
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192 | LOAD_PIX(pix3v, pix3iv, pix3, perm1, perm2); |
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193 | |||
194 | /* Note that AltiVec does have vec_avg, but this works on vector pairs |
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195 | * and rounds up. We could do avg(avg(a, b), avg(c, d)), but the |
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196 | * rounding would mean that, for example, avg(3, 0, 0, 1) = 2, when |
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197 | * it should be 1. Instead, we have to split the pixel vectors into |
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198 | * vectors of shorts and do the averaging by hand. */ |
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199 | |||
200 | /* Split the pixel vectors into shorts. */ |
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201 | pix3hv = (vector unsigned short) VEC_MERGEH(zero, pix3v); |
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202 | pix3lv = (vector unsigned short) VEC_MERGEL(zero, pix3v); |
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203 | pix3ihv = (vector unsigned short) VEC_MERGEH(zero, pix3iv); |
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204 | pix3ilv = (vector unsigned short) VEC_MERGEL(zero, pix3iv); |
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205 | |||
206 | /* Do the averaging on them. */ |
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207 | t3 = vec_add(pix3hv, pix3ihv); |
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208 | t4 = vec_add(pix3lv, pix3ilv); |
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209 | |||
210 | avghv = vec_sr(vec_add(vec_add(t1, t3), two), two); |
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211 | avglv = vec_sr(vec_add(vec_add(t2, t4), two), two); |
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212 | |||
213 | /* Pack the shorts back into a result. */ |
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214 | avgv = vec_pack(avghv, avglv); |
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215 | |||
216 | /* Calculate a sum of abs differences vector. */ |
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217 | t5 = vec_sub(vec_max(pix1v, avgv), vec_min(pix1v, avgv)); |
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218 | |||
219 | /* Add each 4 pixel group together and put 4 results into sad. */ |
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220 | sad = vec_sum4s(t5, sad); |
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221 | |||
222 | pix1 += stride; |
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223 | pix3 += stride; |
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224 | /* Transfer the calculated values for pix3 into pix2. */ |
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225 | t1 = t3; |
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226 | t2 = t4; |
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227 | } |
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228 | /* Sum up the four partial sums, and put the result into s. */ |
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229 | sumdiffs = vec_sums((vector signed int) sad, (vector signed int) zero); |
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230 | sumdiffs = vec_splat(sumdiffs, 3); |
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231 | vec_ste(sumdiffs, 0, &s); |
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232 | |||
233 | return s; |
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234 | } |
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235 | |||
236 | static int sad16_altivec(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2, |
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237 | ptrdiff_t stride, int h) |
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238 | { |
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239 | int i; |
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240 | int __attribute__((aligned(16))) s; |
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241 | const vector unsigned int zero = |
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242 | (const vector unsigned int) vec_splat_u32(0); |
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243 | vector unsigned int sad = (vector unsigned int) vec_splat_u32(0); |
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244 | vector signed int sumdiffs; |
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245 | |||
246 | for (i = 0; i < h; i++) { |
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247 | /* Read potentially unaligned pixels into t1 and t2. */ |
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248 | vector unsigned char t1 =vec_ld(0, pix1); |
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249 | vector unsigned char t2 = VEC_LD(0, pix2); |
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250 | |||
251 | /* Calculate a sum of abs differences vector. */ |
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252 | vector unsigned char t3 = vec_max(t1, t2); |
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253 | vector unsigned char t4 = vec_min(t1, t2); |
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254 | vector unsigned char t5 = vec_sub(t3, t4); |
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255 | |||
256 | /* Add each 4 pixel group together and put 4 results into sad. */ |
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257 | sad = vec_sum4s(t5, sad); |
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258 | |||
259 | pix1 += stride; |
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260 | pix2 += stride; |
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261 | } |
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262 | |||
263 | /* Sum up the four partial sums, and put the result into s. */ |
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264 | sumdiffs = vec_sums((vector signed int) sad, (vector signed int) zero); |
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265 | sumdiffs = vec_splat(sumdiffs, 3); |
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266 | vec_ste(sumdiffs, 0, &s); |
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267 | |||
268 | return s; |
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269 | } |
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270 | |||
271 | static int sad8_altivec(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2, |
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272 | ptrdiff_t stride, int h) |
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273 | { |
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274 | int i; |
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275 | int __attribute__((aligned(16))) s; |
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276 | const vector unsigned int zero = |
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277 | (const vector unsigned int) vec_splat_u32(0); |
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278 | const vector unsigned char permclear = |
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279 | (vector unsigned char) |
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280 | { 255, 255, 255, 255, 255, 255, 255, 255, 0, 0, 0, 0, 0, 0, 0, 0 }; |
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281 | vector unsigned int sad = (vector unsigned int) vec_splat_u32(0); |
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282 | vector signed int sumdiffs; |
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283 | |||
284 | for (i = 0; i < h; i++) { |
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285 | /* Read potentially unaligned pixels into t1 and t2. |
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286 | * Since we're reading 16 pixels, and actually only want 8, |
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287 | * mask out the last 8 pixels. The 0s don't change the sum. */ |
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288 | vector unsigned char pix1l = VEC_LD(0, pix1); |
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289 | vector unsigned char pix2l = VEC_LD(0, pix2); |
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290 | vector unsigned char t1 = vec_and(pix1l, permclear); |
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291 | vector unsigned char t2 = vec_and(pix2l, permclear); |
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292 | |||
293 | /* Calculate a sum of abs differences vector. */ |
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294 | vector unsigned char t3 = vec_max(t1, t2); |
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295 | vector unsigned char t4 = vec_min(t1, t2); |
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296 | vector unsigned char t5 = vec_sub(t3, t4); |
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297 | |||
298 | /* Add each 4 pixel group together and put 4 results into sad. */ |
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299 | sad = vec_sum4s(t5, sad); |
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300 | |||
301 | pix1 += stride; |
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302 | pix2 += stride; |
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303 | } |
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304 | |||
305 | /* Sum up the four partial sums, and put the result into s. */ |
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306 | sumdiffs = vec_sums((vector signed int) sad, (vector signed int) zero); |
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307 | sumdiffs = vec_splat(sumdiffs, 3); |
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308 | vec_ste(sumdiffs, 0, &s); |
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309 | |||
310 | return s; |
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311 | } |
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312 | |||
313 | /* Sum of Squared Errors for an 8x8 block, AltiVec-enhanced. |
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314 | * It's the sad8_altivec code above w/ squaring added. */ |
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315 | static int sse8_altivec(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2, |
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316 | ptrdiff_t stride, int h) |
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317 | { |
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318 | int i; |
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319 | int __attribute__((aligned(16))) s; |
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320 | const vector unsigned int zero = |
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321 | (const vector unsigned int) vec_splat_u32(0); |
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322 | const vector unsigned char permclear = |
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323 | (vector unsigned char) |
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324 | { 255, 255, 255, 255, 255, 255, 255, 255, 0, 0, 0, 0, 0, 0, 0, 0 }; |
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325 | vector unsigned int sum = (vector unsigned int) vec_splat_u32(0); |
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326 | vector signed int sumsqr; |
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327 | |||
328 | for (i = 0; i < h; i++) { |
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329 | /* Read potentially unaligned pixels into t1 and t2. |
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330 | * Since we're reading 16 pixels, and actually only want 8, |
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331 | * mask out the last 8 pixels. The 0s don't change the sum. */ |
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332 | vector unsigned char t1 = vec_and(VEC_LD(0, pix1), permclear); |
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333 | vector unsigned char t2 = vec_and(VEC_LD(0, pix2), permclear); |
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334 | |||
335 | /* Since we want to use unsigned chars, we can take advantage |
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336 | * of the fact that abs(a - b) ^ 2 = (a - b) ^ 2. */ |
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337 | |||
338 | /* Calculate abs differences vector. */ |
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339 | vector unsigned char t3 = vec_max(t1, t2); |
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340 | vector unsigned char t4 = vec_min(t1, t2); |
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341 | vector unsigned char t5 = vec_sub(t3, t4); |
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342 | |||
343 | /* Square the values and add them to our sum. */ |
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344 | sum = vec_msum(t5, t5, sum); |
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345 | |||
346 | pix1 += stride; |
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347 | pix2 += stride; |
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348 | } |
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349 | |||
350 | /* Sum up the four partial sums, and put the result into s. */ |
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351 | sumsqr = vec_sums((vector signed int) sum, (vector signed int) zero); |
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352 | sumsqr = vec_splat(sumsqr, 3); |
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353 | vec_ste(sumsqr, 0, &s); |
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354 | |||
355 | return s; |
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356 | } |
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357 | |||
358 | /* Sum of Squared Errors for a 16x16 block, AltiVec-enhanced. |
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359 | * It's the sad16_altivec code above w/ squaring added. */ |
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360 | static int sse16_altivec(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2, |
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361 | ptrdiff_t stride, int h) |
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362 | { |
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363 | int i; |
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364 | int __attribute__((aligned(16))) s; |
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365 | const vector unsigned int zero = |
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366 | (const vector unsigned int) vec_splat_u32(0); |
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367 | vector unsigned int sum = (vector unsigned int) vec_splat_u32(0); |
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368 | vector signed int sumsqr; |
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369 | |||
370 | for (i = 0; i < h; i++) { |
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371 | /* Read potentially unaligned pixels into t1 and t2. */ |
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372 | vector unsigned char t1 = vec_ld(0, pix1); |
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373 | vector unsigned char t2 = VEC_LD(0, pix2); |
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374 | |||
375 | /* Since we want to use unsigned chars, we can take advantage |
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376 | * of the fact that abs(a - b) ^ 2 = (a - b) ^ 2. */ |
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377 | |||
378 | /* Calculate abs differences vector. */ |
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379 | vector unsigned char t3 = vec_max(t1, t2); |
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380 | vector unsigned char t4 = vec_min(t1, t2); |
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381 | vector unsigned char t5 = vec_sub(t3, t4); |
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382 | |||
383 | /* Square the values and add them to our sum. */ |
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384 | sum = vec_msum(t5, t5, sum); |
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385 | |||
386 | pix1 += stride; |
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387 | pix2 += stride; |
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388 | } |
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389 | |||
390 | /* Sum up the four partial sums, and put the result into s. */ |
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391 | sumsqr = vec_sums((vector signed int) sum, (vector signed int) zero); |
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392 | sumsqr = vec_splat(sumsqr, 3); |
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393 | |||
394 | vec_ste(sumsqr, 0, &s); |
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395 | return s; |
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396 | } |
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397 | |||
398 | static int hadamard8_diff8x8_altivec(MpegEncContext *s, uint8_t *dst, |
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399 | uint8_t *src, ptrdiff_t stride, int h) |
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400 | { |
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401 | int __attribute__((aligned(16))) sum; |
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402 | register const vector unsigned char vzero = |
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403 | (const vector unsigned char) vec_splat_u8(0); |
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404 | register vector signed short temp0, temp1, temp2, temp3, temp4, |
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405 | temp5, temp6, temp7; |
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406 | { |
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407 | register const vector signed short vprod1 = |
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408 | (const vector signed short) { 1, -1, 1, -1, 1, -1, 1, -1 }; |
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409 | register const vector signed short vprod2 = |
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410 | (const vector signed short) { 1, 1, -1, -1, 1, 1, -1, -1 }; |
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411 | register const vector signed short vprod3 = |
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412 | (const vector signed short) { 1, 1, 1, 1, -1, -1, -1, -1 }; |
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413 | register const vector unsigned char perm1 = |
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414 | (const vector unsigned char) |
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415 | { 0x02, 0x03, 0x00, 0x01, 0x06, 0x07, 0x04, 0x05, |
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416 | 0x0A, 0x0B, 0x08, 0x09, 0x0E, 0x0F, 0x0C, 0x0D }; |
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417 | register const vector unsigned char perm2 = |
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418 | (const vector unsigned char) |
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419 | { 0x04, 0x05, 0x06, 0x07, 0x00, 0x01, 0x02, 0x03, |
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420 | 0x0C, 0x0D, 0x0E, 0x0F, 0x08, 0x09, 0x0A, 0x0B }; |
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421 | register const vector unsigned char perm3 = |
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422 | (const vector unsigned char) |
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423 | { 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, |
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424 | 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07 }; |
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425 | |||
426 | |||
427 | #define ONEITERBUTTERFLY(i, res) \ |
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428 | { \ |
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429 | register vector unsigned char srcO = unaligned_load(stride * i, src); \ |
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430 | register vector unsigned char dstO = unaligned_load(stride * i, dst);\ |
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431 | \ |
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432 | /* Promote the unsigned chars to signed shorts. */ \ |
||
433 | /* We're in the 8x8 function, we only care for the first 8. */ \ |
||
434 | register vector signed short srcV = \ |
||
435 | (vector signed short) VEC_MERGEH((vector signed char) vzero, \ |
||
436 | (vector signed char) srcO); \ |
||
437 | register vector signed short dstV = \ |
||
438 | (vector signed short) VEC_MERGEH((vector signed char) vzero, \ |
||
439 | (vector signed char) dstO); \ |
||
440 | \ |
||
441 | /* subtractions inside the first butterfly */ \ |
||
442 | register vector signed short but0 = vec_sub(srcV, dstV); \ |
||
443 | register vector signed short op1 = vec_perm(but0, but0, perm1); \ |
||
444 | register vector signed short but1 = vec_mladd(but0, vprod1, op1); \ |
||
445 | register vector signed short op2 = vec_perm(but1, but1, perm2); \ |
||
446 | register vector signed short but2 = vec_mladd(but1, vprod2, op2); \ |
||
447 | register vector signed short op3 = vec_perm(but2, but2, perm3); \ |
||
448 | res = vec_mladd(but2, vprod3, op3); \ |
||
449 | } |
||
450 | |||
451 | ONEITERBUTTERFLY(0, temp0); |
||
452 | ONEITERBUTTERFLY(1, temp1); |
||
453 | ONEITERBUTTERFLY(2, temp2); |
||
454 | ONEITERBUTTERFLY(3, temp3); |
||
455 | ONEITERBUTTERFLY(4, temp4); |
||
456 | ONEITERBUTTERFLY(5, temp5); |
||
457 | ONEITERBUTTERFLY(6, temp6); |
||
458 | ONEITERBUTTERFLY(7, temp7); |
||
459 | } |
||
460 | #undef ONEITERBUTTERFLY |
||
461 | { |
||
462 | register vector signed int vsum; |
||
463 | register vector signed short line0 = vec_add(temp0, temp1); |
||
464 | register vector signed short line1 = vec_sub(temp0, temp1); |
||
465 | register vector signed short line2 = vec_add(temp2, temp3); |
||
466 | register vector signed short line3 = vec_sub(temp2, temp3); |
||
467 | register vector signed short line4 = vec_add(temp4, temp5); |
||
468 | register vector signed short line5 = vec_sub(temp4, temp5); |
||
469 | register vector signed short line6 = vec_add(temp6, temp7); |
||
470 | register vector signed short line7 = vec_sub(temp6, temp7); |
||
471 | |||
472 | register vector signed short line0B = vec_add(line0, line2); |
||
473 | register vector signed short line2B = vec_sub(line0, line2); |
||
474 | register vector signed short line1B = vec_add(line1, line3); |
||
475 | register vector signed short line3B = vec_sub(line1, line3); |
||
476 | register vector signed short line4B = vec_add(line4, line6); |
||
477 | register vector signed short line6B = vec_sub(line4, line6); |
||
478 | register vector signed short line5B = vec_add(line5, line7); |
||
479 | register vector signed short line7B = vec_sub(line5, line7); |
||
480 | |||
481 | register vector signed short line0C = vec_add(line0B, line4B); |
||
482 | register vector signed short line4C = vec_sub(line0B, line4B); |
||
483 | register vector signed short line1C = vec_add(line1B, line5B); |
||
484 | register vector signed short line5C = vec_sub(line1B, line5B); |
||
485 | register vector signed short line2C = vec_add(line2B, line6B); |
||
486 | register vector signed short line6C = vec_sub(line2B, line6B); |
||
487 | register vector signed short line3C = vec_add(line3B, line7B); |
||
488 | register vector signed short line7C = vec_sub(line3B, line7B); |
||
489 | |||
490 | vsum = vec_sum4s(vec_abs(line0C), vec_splat_s32(0)); |
||
491 | vsum = vec_sum4s(vec_abs(line1C), vsum); |
||
492 | vsum = vec_sum4s(vec_abs(line2C), vsum); |
||
493 | vsum = vec_sum4s(vec_abs(line3C), vsum); |
||
494 | vsum = vec_sum4s(vec_abs(line4C), vsum); |
||
495 | vsum = vec_sum4s(vec_abs(line5C), vsum); |
||
496 | vsum = vec_sum4s(vec_abs(line6C), vsum); |
||
497 | vsum = vec_sum4s(vec_abs(line7C), vsum); |
||
498 | vsum = vec_sums(vsum, (vector signed int) vzero); |
||
499 | vsum = vec_splat(vsum, 3); |
||
500 | |||
501 | vec_ste(vsum, 0, &sum); |
||
502 | } |
||
503 | return sum; |
||
504 | } |
||
505 | |||
506 | /* |
||
507 | * 16x8 works with 16 elements; it can avoid replicating loads, and |
||
508 | * gives the compiler more room for scheduling. It's only used from |
||
509 | * inside hadamard8_diff16_altivec. |
||
510 | * |
||
511 | * Unfortunately, it seems gcc-3.3 is a bit dumb, and the compiled code has |
||
512 | * a LOT of spill code, it seems gcc (unlike xlc) cannot keep everything in |
||
513 | * registers by itself. The following code includes hand-made register |
||
514 | * allocation. It's not clean, but on a 7450 the resulting code is much faster |
||
515 | * (best case falls from 700+ cycles to 550). |
||
516 | * |
||
517 | * xlc doesn't add spill code, but it doesn't know how to schedule for the |
||
518 | * 7450, and its code isn't much faster than gcc-3.3 on the 7450 (but uses |
||
519 | * 25% fewer instructions...) |
||
520 | * |
||
521 | * On the 970, the hand-made RA is still a win (around 690 vs. around 780), |
||
522 | * but xlc goes to around 660 on the regular C code... |
||
523 | */ |
||
524 | static int hadamard8_diff16x8_altivec(MpegEncContext *s, uint8_t *dst, |
||
525 | uint8_t *src, ptrdiff_t stride, int h) |
||
526 | { |
||
527 | int __attribute__((aligned(16))) sum; |
||
528 | register vector signed short |
||
529 | temp0 __asm__ ("v0"), |
||
530 | temp1 __asm__ ("v1"), |
||
531 | temp2 __asm__ ("v2"), |
||
532 | temp3 __asm__ ("v3"), |
||
533 | temp4 __asm__ ("v4"), |
||
534 | temp5 __asm__ ("v5"), |
||
535 | temp6 __asm__ ("v6"), |
||
536 | temp7 __asm__ ("v7"); |
||
537 | register vector signed short |
||
538 | temp0S __asm__ ("v8"), |
||
539 | temp1S __asm__ ("v9"), |
||
540 | temp2S __asm__ ("v10"), |
||
541 | temp3S __asm__ ("v11"), |
||
542 | temp4S __asm__ ("v12"), |
||
543 | temp5S __asm__ ("v13"), |
||
544 | temp6S __asm__ ("v14"), |
||
545 | temp7S __asm__ ("v15"); |
||
546 | register const vector unsigned char vzero __asm__ ("v31") = |
||
547 | (const vector unsigned char) vec_splat_u8(0); |
||
548 | { |
||
549 | register const vector signed short vprod1 __asm__ ("v16") = |
||
550 | (const vector signed short) { 1, -1, 1, -1, 1, -1, 1, -1 }; |
||
551 | |||
552 | register const vector signed short vprod2 __asm__ ("v17") = |
||
553 | (const vector signed short) { 1, 1, -1, -1, 1, 1, -1, -1 }; |
||
554 | |||
555 | register const vector signed short vprod3 __asm__ ("v18") = |
||
556 | (const vector signed short) { 1, 1, 1, 1, -1, -1, -1, -1 }; |
||
557 | |||
558 | register const vector unsigned char perm1 __asm__ ("v19") = |
||
559 | (const vector unsigned char) |
||
560 | { 0x02, 0x03, 0x00, 0x01, 0x06, 0x07, 0x04, 0x05, |
||
561 | 0x0A, 0x0B, 0x08, 0x09, 0x0E, 0x0F, 0x0C, 0x0D }; |
||
562 | |||
563 | register const vector unsigned char perm2 __asm__ ("v20") = |
||
564 | (const vector unsigned char) |
||
565 | { 0x04, 0x05, 0x06, 0x07, 0x00, 0x01, 0x02, 0x03, |
||
566 | 0x0C, 0x0D, 0x0E, 0x0F, 0x08, 0x09, 0x0A, 0x0B }; |
||
567 | |||
568 | register const vector unsigned char perm3 __asm__ ("v21") = |
||
569 | (const vector unsigned char) |
||
570 | { 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, |
||
571 | 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07 }; |
||
572 | |||
573 | #define ONEITERBUTTERFLY(i, res1, res2) \ |
||
574 | { \ |
||
575 | register vector unsigned char srcO __asm__ ("v22") = \ |
||
576 | unaligned_load(stride * i, src); \ |
||
577 | register vector unsigned char dstO __asm__ ("v23") = \ |
||
578 | unaligned_load(stride * i, dst);\ |
||
579 | \ |
||
580 | /* Promote the unsigned chars to signed shorts. */ \ |
||
581 | register vector signed short srcV __asm__ ("v24") = \ |
||
582 | (vector signed short) VEC_MERGEH((vector signed char) vzero, \ |
||
583 | (vector signed char) srcO); \ |
||
584 | register vector signed short dstV __asm__ ("v25") = \ |
||
585 | (vector signed short) VEC_MERGEH((vector signed char) vzero, \ |
||
586 | (vector signed char) dstO); \ |
||
587 | register vector signed short srcW __asm__ ("v26") = \ |
||
588 | (vector signed short) VEC_MERGEL((vector signed char) vzero, \ |
||
589 | (vector signed char) srcO); \ |
||
590 | register vector signed short dstW __asm__ ("v27") = \ |
||
591 | (vector signed short) VEC_MERGEL((vector signed char) vzero, \ |
||
592 | (vector signed char) dstO); \ |
||
593 | \ |
||
594 | /* subtractions inside the first butterfly */ \ |
||
595 | register vector signed short but0 __asm__ ("v28") = \ |
||
596 | vec_sub(srcV, dstV); \ |
||
597 | register vector signed short but0S __asm__ ("v29") = \ |
||
598 | vec_sub(srcW, dstW); \ |
||
599 | register vector signed short op1 __asm__ ("v30") = \ |
||
600 | vec_perm(but0, but0, perm1); \ |
||
601 | register vector signed short but1 __asm__ ("v22") = \ |
||
602 | vec_mladd(but0, vprod1, op1); \ |
||
603 | register vector signed short op1S __asm__ ("v23") = \ |
||
604 | vec_perm(but0S, but0S, perm1); \ |
||
605 | register vector signed short but1S __asm__ ("v24") = \ |
||
606 | vec_mladd(but0S, vprod1, op1S); \ |
||
607 | register vector signed short op2 __asm__ ("v25") = \ |
||
608 | vec_perm(but1, but1, perm2); \ |
||
609 | register vector signed short but2 __asm__ ("v26") = \ |
||
610 | vec_mladd(but1, vprod2, op2); \ |
||
611 | register vector signed short op2S __asm__ ("v27") = \ |
||
612 | vec_perm(but1S, but1S, perm2); \ |
||
613 | register vector signed short but2S __asm__ ("v28") = \ |
||
614 | vec_mladd(but1S, vprod2, op2S); \ |
||
615 | register vector signed short op3 __asm__ ("v29") = \ |
||
616 | vec_perm(but2, but2, perm3); \ |
||
617 | register vector signed short op3S __asm__ ("v30") = \ |
||
618 | vec_perm(but2S, but2S, perm3); \ |
||
619 | res1 = vec_mladd(but2, vprod3, op3); \ |
||
620 | res2 = vec_mladd(but2S, vprod3, op3S); \ |
||
621 | } |
||
622 | |||
623 | ONEITERBUTTERFLY(0, temp0, temp0S); |
||
624 | ONEITERBUTTERFLY(1, temp1, temp1S); |
||
625 | ONEITERBUTTERFLY(2, temp2, temp2S); |
||
626 | ONEITERBUTTERFLY(3, temp3, temp3S); |
||
627 | ONEITERBUTTERFLY(4, temp4, temp4S); |
||
628 | ONEITERBUTTERFLY(5, temp5, temp5S); |
||
629 | ONEITERBUTTERFLY(6, temp6, temp6S); |
||
630 | ONEITERBUTTERFLY(7, temp7, temp7S); |
||
631 | } |
||
632 | #undef ONEITERBUTTERFLY |
||
633 | { |
||
634 | register vector signed int vsum; |
||
635 | |||
636 | register vector signed short line0 = vec_add(temp0, temp1); |
||
637 | register vector signed short line1 = vec_sub(temp0, temp1); |
||
638 | register vector signed short line2 = vec_add(temp2, temp3); |
||
639 | register vector signed short line3 = vec_sub(temp2, temp3); |
||
640 | register vector signed short line4 = vec_add(temp4, temp5); |
||
641 | register vector signed short line5 = vec_sub(temp4, temp5); |
||
642 | register vector signed short line6 = vec_add(temp6, temp7); |
||
643 | register vector signed short line7 = vec_sub(temp6, temp7); |
||
644 | |||
645 | register vector signed short line0B = vec_add(line0, line2); |
||
646 | register vector signed short line2B = vec_sub(line0, line2); |
||
647 | register vector signed short line1B = vec_add(line1, line3); |
||
648 | register vector signed short line3B = vec_sub(line1, line3); |
||
649 | register vector signed short line4B = vec_add(line4, line6); |
||
650 | register vector signed short line6B = vec_sub(line4, line6); |
||
651 | register vector signed short line5B = vec_add(line5, line7); |
||
652 | register vector signed short line7B = vec_sub(line5, line7); |
||
653 | |||
654 | register vector signed short line0C = vec_add(line0B, line4B); |
||
655 | register vector signed short line4C = vec_sub(line0B, line4B); |
||
656 | register vector signed short line1C = vec_add(line1B, line5B); |
||
657 | register vector signed short line5C = vec_sub(line1B, line5B); |
||
658 | register vector signed short line2C = vec_add(line2B, line6B); |
||
659 | register vector signed short line6C = vec_sub(line2B, line6B); |
||
660 | register vector signed short line3C = vec_add(line3B, line7B); |
||
661 | register vector signed short line7C = vec_sub(line3B, line7B); |
||
662 | |||
663 | register vector signed short line0S = vec_add(temp0S, temp1S); |
||
664 | register vector signed short line1S = vec_sub(temp0S, temp1S); |
||
665 | register vector signed short line2S = vec_add(temp2S, temp3S); |
||
666 | register vector signed short line3S = vec_sub(temp2S, temp3S); |
||
667 | register vector signed short line4S = vec_add(temp4S, temp5S); |
||
668 | register vector signed short line5S = vec_sub(temp4S, temp5S); |
||
669 | register vector signed short line6S = vec_add(temp6S, temp7S); |
||
670 | register vector signed short line7S = vec_sub(temp6S, temp7S); |
||
671 | |||
672 | register vector signed short line0BS = vec_add(line0S, line2S); |
||
673 | register vector signed short line2BS = vec_sub(line0S, line2S); |
||
674 | register vector signed short line1BS = vec_add(line1S, line3S); |
||
675 | register vector signed short line3BS = vec_sub(line1S, line3S); |
||
676 | register vector signed short line4BS = vec_add(line4S, line6S); |
||
677 | register vector signed short line6BS = vec_sub(line4S, line6S); |
||
678 | register vector signed short line5BS = vec_add(line5S, line7S); |
||
679 | register vector signed short line7BS = vec_sub(line5S, line7S); |
||
680 | |||
681 | register vector signed short line0CS = vec_add(line0BS, line4BS); |
||
682 | register vector signed short line4CS = vec_sub(line0BS, line4BS); |
||
683 | register vector signed short line1CS = vec_add(line1BS, line5BS); |
||
684 | register vector signed short line5CS = vec_sub(line1BS, line5BS); |
||
685 | register vector signed short line2CS = vec_add(line2BS, line6BS); |
||
686 | register vector signed short line6CS = vec_sub(line2BS, line6BS); |
||
687 | register vector signed short line3CS = vec_add(line3BS, line7BS); |
||
688 | register vector signed short line7CS = vec_sub(line3BS, line7BS); |
||
689 | |||
690 | vsum = vec_sum4s(vec_abs(line0C), vec_splat_s32(0)); |
||
691 | vsum = vec_sum4s(vec_abs(line1C), vsum); |
||
692 | vsum = vec_sum4s(vec_abs(line2C), vsum); |
||
693 | vsum = vec_sum4s(vec_abs(line3C), vsum); |
||
694 | vsum = vec_sum4s(vec_abs(line4C), vsum); |
||
695 | vsum = vec_sum4s(vec_abs(line5C), vsum); |
||
696 | vsum = vec_sum4s(vec_abs(line6C), vsum); |
||
697 | vsum = vec_sum4s(vec_abs(line7C), vsum); |
||
698 | |||
699 | vsum = vec_sum4s(vec_abs(line0CS), vsum); |
||
700 | vsum = vec_sum4s(vec_abs(line1CS), vsum); |
||
701 | vsum = vec_sum4s(vec_abs(line2CS), vsum); |
||
702 | vsum = vec_sum4s(vec_abs(line3CS), vsum); |
||
703 | vsum = vec_sum4s(vec_abs(line4CS), vsum); |
||
704 | vsum = vec_sum4s(vec_abs(line5CS), vsum); |
||
705 | vsum = vec_sum4s(vec_abs(line6CS), vsum); |
||
706 | vsum = vec_sum4s(vec_abs(line7CS), vsum); |
||
707 | vsum = vec_sums(vsum, (vector signed int) vzero); |
||
708 | vsum = vec_splat(vsum, 3); |
||
709 | |||
710 | vec_ste(vsum, 0, &sum); |
||
711 | } |
||
712 | return sum; |
||
713 | } |
||
714 | |||
715 | static int hadamard8_diff16_altivec(MpegEncContext *s, uint8_t *dst, |
||
716 | uint8_t *src, ptrdiff_t stride, int h) |
||
717 | { |
||
718 | int score = hadamard8_diff16x8_altivec(s, dst, src, stride, 8); |
||
719 | |||
720 | if (h == 16) { |
||
721 | dst += 8 * stride; |
||
722 | src += 8 * stride; |
||
723 | score += hadamard8_diff16x8_altivec(s, dst, src, stride, 8); |
||
724 | } |
||
725 | return score; |
||
726 | } |
||
727 | #endif /* HAVE_ALTIVEC */ |
||
728 | |||
729 | av_cold void ff_me_cmp_init_ppc(MECmpContext *c, AVCodecContext *avctx) |
||
730 | { |
||
731 | #if HAVE_ALTIVEC |
||
732 | if (!PPC_ALTIVEC(av_get_cpu_flags())) |
||
733 | return; |
||
734 | |||
735 | c->pix_abs[0][1] = sad16_x2_altivec; |
||
736 | c->pix_abs[0][2] = sad16_y2_altivec; |
||
737 | c->pix_abs[0][3] = sad16_xy2_altivec; |
||
738 | c->pix_abs[0][0] = sad16_altivec; |
||
739 | c->pix_abs[1][0] = sad8_altivec; |
||
740 | |||
741 | c->sad[0] = sad16_altivec; |
||
742 | c->sad[1] = sad8_altivec; |
||
743 | c->sse[0] = sse16_altivec; |
||
744 | c->sse[1] = sse8_altivec; |
||
745 | |||
746 | c->hadamard8_diff[0] = hadamard8_diff16_altivec; |
||
747 | c->hadamard8_diff[1] = hadamard8_diff8x8_altivec; |
||
748 | #endif /* HAVE_ALTIVEC */ |
||
749 | }>>>>>>> |