Mercurial > sdl-ios-xcode
annotate src/video/SDL_yuv_mmx.c @ 2167:8f2174e22cd5
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author | Sam Lantinga <slouken@libsdl.org> |
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date | Wed, 11 Jul 2007 04:47:25 +0000 |
parents | c121d94672cb |
children | 07f084fe97d0 |
rev | line source |
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0 | 1 /* |
2 SDL - Simple DirectMedia Layer | |
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3 Copyright (C) 1997-2006 Sam Lantinga |
0 | 4 |
5 This library is free software; you can redistribute it and/or | |
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6 modify it under the terms of the GNU Lesser General Public |
0 | 7 License as published by the Free Software Foundation; either |
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8 version 2.1 of the License, or (at your option) any later version. |
0 | 9 |
10 This library is distributed in the hope that it will be useful, | |
11 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
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13 Lesser General Public License for more details. |
0 | 14 |
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15 You should have received a copy of the GNU Lesser General Public |
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16 License along with this library; if not, write to the Free Software |
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
0 | 18 |
19 Sam Lantinga | |
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20 slouken@libsdl.org |
0 | 21 */ |
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22 #include "SDL_config.h" |
0 | 23 |
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24 /* *INDENT-OFF* */ |
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25 |
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26 #if 0 /* FIXME: This code needs to be rewritten to reference the static data using relocatable addresses (e.g. http://www.gentoo.org/proj/en/hardened/pic-fix-guide.xml or http://nasm.sourceforge.net/doc/html/nasmdoc8.html#section-8.2) This code currently breaks on systems with readonly text segments (hardened Linux / Intel Mac) */ |
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27 #if defined(__GNUC__) && defined(__i386__) && SDL_ASSEMBLY_ROUTINES |
0 | 28 |
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29 #include "SDL_stdinc.h" |
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30 |
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31 #define ASM_ARRAY(x) x[] __asm__("_" #x) __attribute__((used)) |
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32 |
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33 static unsigned int ASM_ARRAY(MMX_0080w) = {0x00800080, 0x00800080}; |
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34 static unsigned int ASM_ARRAY(MMX_00FFw) = {0x00ff00ff, 0x00ff00ff}; |
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35 static unsigned int ASM_ARRAY(MMX_FF00w) = {0xff00ff00, 0xff00ff00}; |
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36 |
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37 static unsigned short ASM_ARRAY(MMX_Ycoeff) = {0x004a, 0x004a, 0x004a, 0x004a}; |
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38 |
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39 static unsigned short ASM_ARRAY(MMX_UbluRGB) = {0x0072, 0x0072, 0x0072, 0x0072}; |
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40 static unsigned short ASM_ARRAY(MMX_VredRGB) = {0x0059, 0x0059, 0x0059, 0x0059}; |
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41 static unsigned short ASM_ARRAY(MMX_UgrnRGB) = {0xffea, 0xffea, 0xffea, 0xffea}; |
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42 static unsigned short ASM_ARRAY(MMX_VgrnRGB) = {0xffd2, 0xffd2, 0xffd2, 0xffd2}; |
0 | 43 |
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44 static unsigned short ASM_ARRAY(MMX_Ublu5x5) = {0x0081, 0x0081, 0x0081, 0x0081}; |
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45 static unsigned short ASM_ARRAY(MMX_Vred5x5) = {0x0066, 0x0066, 0x0066, 0x0066}; |
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46 static unsigned short ASM_ARRAY(MMX_Ugrn555) = {0xffe7, 0xffe7, 0xffe7, 0xffe7}; |
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47 static unsigned short ASM_ARRAY(MMX_Vgrn555) = {0xffcc, 0xffcc, 0xffcc, 0xffcc}; |
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48 static unsigned short ASM_ARRAY(MMX_Ugrn565) = {0xffe8, 0xffe8, 0xffe8, 0xffe8}; |
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49 static unsigned short ASM_ARRAY(MMX_Vgrn565) = {0xffcd, 0xffcd, 0xffcd, 0xffcd}; |
0 | 50 |
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51 static unsigned short ASM_ARRAY(MMX_red555) = {0x7c00, 0x7c00, 0x7c00, 0x7c00}; |
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52 static unsigned short ASM_ARRAY(MMX_red565) = {0xf800, 0xf800, 0xf800, 0xf800}; |
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53 static unsigned short ASM_ARRAY(MMX_grn555) = {0x03e0, 0x03e0, 0x03e0, 0x03e0}; |
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54 static unsigned short ASM_ARRAY(MMX_grn565) = {0x07e0, 0x07e0, 0x07e0, 0x07e0}; |
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55 static unsigned short ASM_ARRAY(MMX_blu5x5) = {0x001f, 0x001f, 0x001f, 0x001f}; |
0 | 56 |
57 /** | |
58 This MMX assembler is my first assembler/MMX program ever. | |
59 Thus it maybe buggy. | |
60 Send patches to: | |
61 mvogt@rhrk.uni-kl.de | |
62 | |
63 After it worked fine I have "obfuscated" the code a bit to have | |
64 more parallism in the MMX units. This means I moved | |
65 initilisation around and delayed other instruction. | |
66 Performance measurement did not show that this brought any advantage | |
67 but in theory it _should_ be faster this way. | |
68 | |
69 The overall performanve gain to the C based dither was 30%-40%. | |
70 The MMX routine calculates 256bit=8RGB values in each cycle | |
71 (4 for row1 & 4 for row2) | |
72 | |
73 The red/green/blue.. coefficents are taken from the mpeg_play | |
74 player. They look nice, but I dont know if you can have | |
75 better values, to avoid integer rounding errors. | |
76 | |
77 | |
78 IMPORTANT: | |
79 ========== | |
80 | |
81 It is a requirement that the cr/cb/lum are 8 byte aligned and | |
82 the out are 16byte aligned or you will/may get segfaults | |
83 | |
84 */ | |
85 | |
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86 void ColorRGBDitherYV12MMX1X( int *colortab, Uint32 *rgb_2_pix, |
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87 unsigned char *lum, unsigned char *cr, |
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88 unsigned char *cb, unsigned char *out, |
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89 int rows, int cols, int mod ) |
0 | 90 { |
91 Uint32 *row1; | |
92 Uint32 *row2; | |
93 | |
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94 unsigned char* y = lum +cols*rows; // Pointer to the end |
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95 int x=0; |
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96 row1 = (Uint32 *)out; // 32 bit target |
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97 row2 = (Uint32 *)out+cols+mod; // start of second row |
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98 mod = (mod+cols+mod)*4; // increment for row1 in byte |
0 | 99 |
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100 __asm__ __volatile__ ( |
0 | 101 /* We don't really care about PIC - the code should be rewritten to use |
102 relative addressing for the static tables, so right now we take the | |
103 COW hit on the pages this code resides. Big deal. | |
104 This spill is just to reduce register pressure in the PIC case. */ | |
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105 "pushl %%ebx\n" |
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106 "movl %0, %%ebx\n" |
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107 |
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108 ".align 8\n" |
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109 "1:\n" |
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110 |
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111 // create Cr (result in mm1) |
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112 "movd (%%ebx), %%mm1\n" // 0 0 0 0 v3 v2 v1 v0 |
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113 "pxor %%mm7,%%mm7\n" // 00 00 00 00 00 00 00 00 |
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114 "movd (%2), %%mm2\n" // 0 0 0 0 l3 l2 l1 l0 |
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115 "punpcklbw %%mm7,%%mm1\n" // 0 v3 0 v2 00 v1 00 v0 |
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116 "punpckldq %%mm1,%%mm1\n" // 00 v1 00 v0 00 v1 00 v0 |
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117 "psubw _MMX_0080w,%%mm1\n" // mm1-128:r1 r1 r0 r0 r1 r1 r0 r0 |
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118 |
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119 // create Cr_g (result in mm0) |
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120 "movq %%mm1,%%mm0\n" // r1 r1 r0 r0 r1 r1 r0 r0 |
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121 "pmullw _MMX_VgrnRGB,%%mm0\n"// red*-46dec=0.7136*64 |
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122 "pmullw _MMX_VredRGB,%%mm1\n"// red*89dec=1.4013*64 |
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123 "psraw $6, %%mm0\n" // red=red/64 |
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124 "psraw $6, %%mm1\n" // red=red/64 |
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125 |
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126 // create L1 L2 (result in mm2,mm4) |
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127 // L2=lum+cols |
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128 "movq (%2,%4),%%mm3\n" // 0 0 0 0 L3 L2 L1 L0 |
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129 "punpckldq %%mm3,%%mm2\n" // L3 L2 L1 L0 l3 l2 l1 l0 |
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130 "movq %%mm2,%%mm4\n" // L3 L2 L1 L0 l3 l2 l1 l0 |
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131 "pand _MMX_FF00w,%%mm2\n" // L3 0 L1 0 l3 0 l1 0 |
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132 "pand _MMX_00FFw,%%mm4\n" // 0 L2 0 L0 0 l2 0 l0 |
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133 "psrlw $8,%%mm2\n" // 0 L3 0 L1 0 l3 0 l1 |
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134 |
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135 // create R (result in mm6) |
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136 "movq %%mm2,%%mm5\n" // 0 L3 0 L1 0 l3 0 l1 |
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137 "movq %%mm4,%%mm6\n" // 0 L2 0 L0 0 l2 0 l0 |
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138 "paddsw %%mm1, %%mm5\n" // lum1+red:x R3 x R1 x r3 x r1 |
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139 "paddsw %%mm1, %%mm6\n" // lum1+red:x R2 x R0 x r2 x r0 |
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140 "packuswb %%mm5,%%mm5\n" // R3 R1 r3 r1 R3 R1 r3 r1 |
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141 "packuswb %%mm6,%%mm6\n" // R2 R0 r2 r0 R2 R0 r2 r0 |
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142 "pxor %%mm7,%%mm7\n" // 00 00 00 00 00 00 00 00 |
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143 "punpcklbw %%mm5,%%mm6\n" // R3 R2 R1 R0 r3 r2 r1 r0 |
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144 |
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145 // create Cb (result in mm1) |
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146 "movd (%1), %%mm1\n" // 0 0 0 0 u3 u2 u1 u0 |
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147 "punpcklbw %%mm7,%%mm1\n" // 0 u3 0 u2 00 u1 00 u0 |
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148 "punpckldq %%mm1,%%mm1\n" // 00 u1 00 u0 00 u1 00 u0 |
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149 "psubw _MMX_0080w,%%mm1\n" // mm1-128:u1 u1 u0 u0 u1 u1 u0 u0 |
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150 // create Cb_g (result in mm5) |
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151 "movq %%mm1,%%mm5\n" // u1 u1 u0 u0 u1 u1 u0 u0 |
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152 "pmullw _MMX_UgrnRGB,%%mm5\n" // blue*-109dec=1.7129*64 |
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153 "pmullw _MMX_UbluRGB,%%mm1\n" // blue*114dec=1.78125*64 |
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154 "psraw $6, %%mm5\n" // blue=red/64 |
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155 "psraw $6, %%mm1\n" // blue=blue/64 |
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156 |
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157 // create G (result in mm7) |
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158 "movq %%mm2,%%mm3\n" // 0 L3 0 L1 0 l3 0 l1 |
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159 "movq %%mm4,%%mm7\n" // 0 L2 0 L0 0 l2 0 l1 |
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160 "paddsw %%mm5, %%mm3\n" // lum1+Cb_g:x G3t x G1t x g3t x g1t |
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161 "paddsw %%mm5, %%mm7\n" // lum1+Cb_g:x G2t x G0t x g2t x g0t |
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162 "paddsw %%mm0, %%mm3\n" // lum1+Cr_g:x G3 x G1 x g3 x g1 |
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163 "paddsw %%mm0, %%mm7\n" // lum1+blue:x G2 x G0 x g2 x g0 |
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164 "packuswb %%mm3,%%mm3\n" // G3 G1 g3 g1 G3 G1 g3 g1 |
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165 "packuswb %%mm7,%%mm7\n" // G2 G0 g2 g0 G2 G0 g2 g0 |
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166 "punpcklbw %%mm3,%%mm7\n" // G3 G2 G1 G0 g3 g2 g1 g0 |
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167 |
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168 // create B (result in mm5) |
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169 "movq %%mm2,%%mm3\n" // 0 L3 0 L1 0 l3 0 l1 |
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170 "movq %%mm4,%%mm5\n" // 0 L2 0 L0 0 l2 0 l1 |
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171 "paddsw %%mm1, %%mm3\n" // lum1+blue:x B3 x B1 x b3 x b1 |
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172 "paddsw %%mm1, %%mm5\n" // lum1+blue:x B2 x B0 x b2 x b0 |
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173 "packuswb %%mm3,%%mm3\n" // B3 B1 b3 b1 B3 B1 b3 b1 |
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174 "packuswb %%mm5,%%mm5\n" // B2 B0 b2 b0 B2 B0 b2 b0 |
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175 "punpcklbw %%mm3,%%mm5\n" // B3 B2 B1 B0 b3 b2 b1 b0 |
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176 |
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177 // fill destination row1 (needed are mm6=Rr,mm7=Gg,mm5=Bb) |
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178 |
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179 "pxor %%mm2,%%mm2\n" // 0 0 0 0 0 0 0 0 |
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180 "pxor %%mm4,%%mm4\n" // 0 0 0 0 0 0 0 0 |
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181 "movq %%mm6,%%mm1\n" // R3 R2 R1 R0 r3 r2 r1 r0 |
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182 "movq %%mm5,%%mm3\n" // B3 B2 B1 B0 b3 b2 b1 b0 |
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183 // process lower lum |
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184 "punpcklbw %%mm4,%%mm1\n" // 0 r3 0 r2 0 r1 0 r0 |
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185 "punpcklbw %%mm4,%%mm3\n" // 0 b3 0 b2 0 b1 0 b0 |
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186 "movq %%mm1,%%mm2\n" // 0 r3 0 r2 0 r1 0 r0 |
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187 "movq %%mm3,%%mm0\n" // 0 b3 0 b2 0 b1 0 b0 |
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188 "punpcklwd %%mm1,%%mm3\n" // 0 r1 0 b1 0 r0 0 b0 |
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189 "punpckhwd %%mm2,%%mm0\n" // 0 r3 0 b3 0 r2 0 b2 |
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190 |
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191 "pxor %%mm2,%%mm2\n" // 0 0 0 0 0 0 0 0 |
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192 "movq %%mm7,%%mm1\n" // G3 G2 G1 G0 g3 g2 g1 g0 |
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193 "punpcklbw %%mm1,%%mm2\n" // g3 0 g2 0 g1 0 g0 0 |
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194 "punpcklwd %%mm4,%%mm2\n" // 0 0 g1 0 0 0 g0 0 |
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195 "por %%mm3, %%mm2\n" // 0 r1 g1 b1 0 r0 g0 b0 |
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196 "movq %%mm2,(%3)\n" // wrote out ! row1 |
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197 |
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198 "pxor %%mm2,%%mm2\n" // 0 0 0 0 0 0 0 0 |
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199 "punpcklbw %%mm1,%%mm4\n" // g3 0 g2 0 g1 0 g0 0 |
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200 "punpckhwd %%mm2,%%mm4\n" // 0 0 g3 0 0 0 g2 0 |
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201 "por %%mm0, %%mm4\n" // 0 r3 g3 b3 0 r2 g2 b2 |
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202 "movq %%mm4,8(%3)\n" // wrote out ! row1 |
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203 |
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204 // fill destination row2 (needed are mm6=Rr,mm7=Gg,mm5=Bb) |
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205 // this can be done "destructive" |
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206 "pxor %%mm2,%%mm2\n" // 0 0 0 0 0 0 0 0 |
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207 "punpckhbw %%mm2,%%mm6\n" // 0 R3 0 R2 0 R1 0 R0 |
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208 "punpckhbw %%mm1,%%mm5\n" // G3 B3 G2 B2 G1 B1 G0 B0 |
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209 "movq %%mm5,%%mm1\n" // G3 B3 G2 B2 G1 B1 G0 B0 |
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210 "punpcklwd %%mm6,%%mm1\n" // 0 R1 G1 B1 0 R0 G0 B0 |
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211 "movq %%mm1,(%5)\n" // wrote out ! row2 |
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212 "punpckhwd %%mm6,%%mm5\n" // 0 R3 G3 B3 0 R2 G2 B2 |
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213 "movq %%mm5,8(%5)\n" // wrote out ! row2 |
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214 |
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215 "addl $4,%2\n" // lum+4 |
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216 "leal 16(%3),%3\n" // row1+16 |
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217 "leal 16(%5),%5\n" // row2+16 |
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218 "addl $2, %%ebx\n" // cr+2 |
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219 "addl $2, %1\n" // cb+2 |
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220 |
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221 "addl $4,%6\n" // x+4 |
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222 "cmpl %4,%6\n" |
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223 |
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224 "jl 1b\n" |
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225 "addl %4, %2\n" // lum += cols |
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226 "addl %8, %3\n" // row1+= mod |
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227 "addl %8, %5\n" // row2+= mod |
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228 "movl $0, %6\n" // x=0 |
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229 "cmpl %7, %2\n" |
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230 "jl 1b\n" |
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231 "emms\n" |
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232 "popl %%ebx\n" |
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233 : |
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234 : "m" (cr), "r"(cb),"r"(lum), |
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235 "r"(row1),"r"(cols),"r"(row2),"m"(x),"m"(y),"m"(mod)); |
0 | 236 } |
237 | |
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238 void Color565DitherYV12MMX1X( int *colortab, Uint32 *rgb_2_pix, |
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239 unsigned char *lum, unsigned char *cr, |
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240 unsigned char *cb, unsigned char *out, |
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241 int rows, int cols, int mod ) |
0 | 242 { |
243 Uint16 *row1; | |
244 Uint16 *row2; | |
245 | |
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246 unsigned char* y = lum +cols*rows; /* Pointer to the end */ |
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247 int x=0; |
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248 row1 = (Uint16 *)out; /* 16 bit target */ |
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249 row2 = (Uint16 *)out+cols+mod; /* start of second row */ |
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250 mod = (mod+cols+mod)*2; /* increment for row1 in byte */ |
0 | 251 |
252 | |
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253 __asm__ __volatile__( |
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254 "pushl %%ebx\n" |
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255 "movl %0, %%ebx\n" |
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256 |
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257 ".align 8\n" |
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258 "1:\n" |
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259 "movd (%1), %%mm0\n" // 4 Cb 0 0 0 0 u3 u2 u1 u0 |
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260 "pxor %%mm7, %%mm7\n" |
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261 "movd (%%ebx), %%mm1\n" // 4 Cr 0 0 0 0 v3 v2 v1 v0 |
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262 "punpcklbw %%mm7, %%mm0\n" // 4 W cb 0 u3 0 u2 0 u1 0 u0 |
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263 "punpcklbw %%mm7, %%mm1\n" // 4 W cr 0 v3 0 v2 0 v1 0 v0 |
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264 "psubw _MMX_0080w, %%mm0\n" |
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265 "psubw _MMX_0080w, %%mm1\n" |
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266 "movq %%mm0, %%mm2\n" // Cb 0 u3 0 u2 0 u1 0 u0 |
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267 "movq %%mm1, %%mm3\n" // Cr |
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268 "pmullw _MMX_Ugrn565, %%mm2\n" // Cb2green 0 R3 0 R2 0 R1 0 R0 |
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269 "movq (%2), %%mm6\n" // L1 l7 L6 L5 L4 L3 L2 L1 L0 |
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270 "pmullw _MMX_Ublu5x5, %%mm0\n" // Cb2blue |
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271 "pand _MMX_00FFw, %%mm6\n" // L1 00 L6 00 L4 00 L2 00 L0 |
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272 "pmullw _MMX_Vgrn565, %%mm3\n" // Cr2green |
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273 "movq (%2), %%mm7\n" // L2 |
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274 "pmullw _MMX_Vred5x5, %%mm1\n" // Cr2red |
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275 "psrlw $8, %%mm7\n" // L2 00 L7 00 L5 00 L3 00 L1 |
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276 "pmullw _MMX_Ycoeff, %%mm6\n" // lum1 |
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277 "paddw %%mm3, %%mm2\n" // Cb2green + Cr2green == green |
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278 "pmullw _MMX_Ycoeff, %%mm7\n" // lum2 |
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279 |
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280 "movq %%mm6, %%mm4\n" // lum1 |
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281 "paddw %%mm0, %%mm6\n" // lum1 +blue 00 B6 00 B4 00 B2 00 B0 |
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282 "movq %%mm4, %%mm5\n" // lum1 |
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283 "paddw %%mm1, %%mm4\n" // lum1 +red 00 R6 00 R4 00 R2 00 R0 |
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284 "paddw %%mm2, %%mm5\n" // lum1 +green 00 G6 00 G4 00 G2 00 G0 |
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285 "psraw $6, %%mm4\n" // R1 0 .. 64 |
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286 "movq %%mm7, %%mm3\n" // lum2 00 L7 00 L5 00 L3 00 L1 |
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287 "psraw $6, %%mm5\n" // G1 - .. + |
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288 "paddw %%mm0, %%mm7\n" // Lum2 +blue 00 B7 00 B5 00 B3 00 B1 |
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289 "psraw $6, %%mm6\n" // B1 0 .. 64 |
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290 "packuswb %%mm4, %%mm4\n" // R1 R1 |
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291 "packuswb %%mm5, %%mm5\n" // G1 G1 |
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292 "packuswb %%mm6, %%mm6\n" // B1 B1 |
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293 "punpcklbw %%mm4, %%mm4\n" |
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294 "punpcklbw %%mm5, %%mm5\n" |
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295 |
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296 "pand _MMX_red565, %%mm4\n" |
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297 "psllw $3, %%mm5\n" // GREEN 1 |
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298 "punpcklbw %%mm6, %%mm6\n" |
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299 "pand _MMX_grn565, %%mm5\n" |
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300 "pand _MMX_red565, %%mm6\n" |
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301 "por %%mm5, %%mm4\n" // |
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302 "psrlw $11, %%mm6\n" // BLUE 1 |
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303 "movq %%mm3, %%mm5\n" // lum2 |
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304 "paddw %%mm1, %%mm3\n" // lum2 +red 00 R7 00 R5 00 R3 00 R1 |
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305 "paddw %%mm2, %%mm5\n" // lum2 +green 00 G7 00 G5 00 G3 00 G1 |
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306 "psraw $6, %%mm3\n" // R2 |
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307 "por %%mm6, %%mm4\n" // MM4 |
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308 "psraw $6, %%mm5\n" // G2 |
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309 "movq (%2, %4), %%mm6\n" // L3 load lum2 |
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310 "psraw $6, %%mm7\n" |
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311 "packuswb %%mm3, %%mm3\n" |
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312 "packuswb %%mm5, %%mm5\n" |
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313 "packuswb %%mm7, %%mm7\n" |
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314 "pand _MMX_00FFw, %%mm6\n" // L3 |
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315 "punpcklbw %%mm3, %%mm3\n" |
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316 "punpcklbw %%mm5, %%mm5\n" |
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317 "pmullw _MMX_Ycoeff, %%mm6\n" // lum3 |
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318 "punpcklbw %%mm7, %%mm7\n" |
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319 "psllw $3, %%mm5\n" // GREEN 2 |
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320 "pand _MMX_red565, %%mm7\n" |
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321 "pand _MMX_red565, %%mm3\n" |
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322 "psrlw $11, %%mm7\n" // BLUE 2 |
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323 "pand _MMX_grn565, %%mm5\n" |
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324 "por %%mm7, %%mm3\n" |
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325 "movq (%2,%4), %%mm7\n" // L4 load lum2 |
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326 "por %%mm5, %%mm3\n" // |
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327 "psrlw $8, %%mm7\n" // L4 |
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328 "movq %%mm4, %%mm5\n" |
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329 "punpcklwd %%mm3, %%mm4\n" |
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330 "pmullw _MMX_Ycoeff, %%mm7\n" // lum4 |
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331 "punpckhwd %%mm3, %%mm5\n" |
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332 |
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333 "movq %%mm4, (%3)\n" // write row1 |
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334 "movq %%mm5, 8(%3)\n" // write row1 |
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335 |
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336 "movq %%mm6, %%mm4\n" // Lum3 |
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337 "paddw %%mm0, %%mm6\n" // Lum3 +blue |
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338 |
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339 "movq %%mm4, %%mm5\n" // Lum3 |
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340 "paddw %%mm1, %%mm4\n" // Lum3 +red |
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341 "paddw %%mm2, %%mm5\n" // Lum3 +green |
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342 "psraw $6, %%mm4\n" |
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343 "movq %%mm7, %%mm3\n" // Lum4 |
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344 "psraw $6, %%mm5\n" |
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345 "paddw %%mm0, %%mm7\n" // Lum4 +blue |
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346 "psraw $6, %%mm6\n" // Lum3 +blue |
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347 "movq %%mm3, %%mm0\n" // Lum4 |
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348 "packuswb %%mm4, %%mm4\n" |
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349 "paddw %%mm1, %%mm3\n" // Lum4 +red |
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350 "packuswb %%mm5, %%mm5\n" |
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351 "paddw %%mm2, %%mm0\n" // Lum4 +green |
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352 "packuswb %%mm6, %%mm6\n" |
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353 "punpcklbw %%mm4, %%mm4\n" |
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354 "punpcklbw %%mm5, %%mm5\n" |
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355 "punpcklbw %%mm6, %%mm6\n" |
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356 "psllw $3, %%mm5\n" // GREEN 3 |
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357 "pand _MMX_red565, %%mm4\n" |
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358 "psraw $6, %%mm3\n" // psr 6 |
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359 "psraw $6, %%mm0\n" |
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360 "pand _MMX_red565, %%mm6\n" // BLUE |
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361 "pand _MMX_grn565, %%mm5\n" |
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362 "psrlw $11, %%mm6\n" // BLUE 3 |
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363 "por %%mm5, %%mm4\n" |
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364 "psraw $6, %%mm7\n" |
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365 "por %%mm6, %%mm4\n" |
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366 "packuswb %%mm3, %%mm3\n" |
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367 "packuswb %%mm0, %%mm0\n" |
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368 "packuswb %%mm7, %%mm7\n" |
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369 "punpcklbw %%mm3, %%mm3\n" |
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370 "punpcklbw %%mm0, %%mm0\n" |
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371 "punpcklbw %%mm7, %%mm7\n" |
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372 "pand _MMX_red565, %%mm3\n" |
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373 "pand _MMX_red565, %%mm7\n" // BLUE |
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374 "psllw $3, %%mm0\n" // GREEN 4 |
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375 "psrlw $11, %%mm7\n" |
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376 "pand _MMX_grn565, %%mm0\n" |
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377 "por %%mm7, %%mm3\n" |
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378 "por %%mm0, %%mm3\n" |
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379 |
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380 "movq %%mm4, %%mm5\n" |
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381 |
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382 "punpcklwd %%mm3, %%mm4\n" |
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383 "punpckhwd %%mm3, %%mm5\n" |
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384 |
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385 "movq %%mm4, (%5)\n" |
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386 "movq %%mm5, 8(%5)\n" |
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387 |
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388 "addl $8, %6\n" |
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389 "addl $8, %2\n" |
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390 "addl $4, %%ebx\n" |
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391 "addl $4, %1\n" |
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392 "cmpl %4, %6\n" |
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393 "leal 16(%3), %3\n" |
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394 "leal 16(%5),%5\n" // row2+16 |
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395 |
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396 |
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397 "jl 1b\n" |
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398 "addl %4, %2\n" // lum += cols |
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399 "addl %8, %3\n" // row1+= mod |
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400 "addl %8, %5\n" // row2+= mod |
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401 "movl $0, %6\n" // x=0 |
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402 "cmpl %7, %2\n" |
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403 "jl 1b\n" |
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404 "emms\n" |
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405 "popl %%ebx\n" |
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406 : |
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407 :"m" (cr), "r"(cb),"r"(lum), |
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408 "r"(row1),"r"(cols),"r"(row2),"m"(x),"m"(y),"m"(mod)); |
0 | 409 } |
410 | |
411 #endif /* GCC i386 inline assembly */ | |
1413 | 412 #endif /* 0 */ |
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413 |
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414 /* *INDENT-ON* */ |
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415 |
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416 /* vi: set ts=4 sw=4 expandtab: */ |