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| 1 ; |
| 2 ; jiss2fst.asm - fast integer IDCT (SSE2) |
| 3 ; |
| 4 ; Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB |
| 5 ; |
| 6 ; Based on |
| 7 ; x86 SIMD extension for IJG JPEG library |
| 8 ; Copyright (C) 1999-2006, MIYASAKA Masaru. |
| 9 ; For conditions of distribution and use, see copyright notice in jsimdext.inc |
| 10 ; |
| 11 ; This file should be assembled with NASM (Netwide Assembler), |
| 12 ; can *not* be assembled with Microsoft's MASM or any compatible |
| 13 ; assembler (including Borland's Turbo Assembler). |
| 14 ; NASM is available from http://nasm.sourceforge.net/ or |
| 15 ; http://sourceforge.net/project/showfiles.php?group_id=6208 |
| 16 ; |
| 17 ; This file contains a fast, not so accurate integer implementation of |
| 18 ; the inverse DCT (Discrete Cosine Transform). The following code is |
| 19 ; based directly on the IJG's original jidctfst.c; see the jidctfst.c |
| 20 ; for more details. |
| 21 ; |
| 22 ; [TAB8] |
| 23 |
| 24 %include "jsimdext.inc" |
| 25 %include "jdct.inc" |
| 26 |
| 27 ; -------------------------------------------------------------------------- |
| 28 |
| 29 %define CONST_BITS 8 ; 14 is also OK. |
| 30 %define PASS1_BITS 2 |
| 31 |
| 32 %if IFAST_SCALE_BITS != PASS1_BITS |
| 33 %error "'IFAST_SCALE_BITS' must be equal to 'PASS1_BITS'." |
| 34 %endif |
| 35 |
| 36 %if CONST_BITS == 8 |
| 37 F_1_082 equ 277 ; FIX(1.082392200) |
| 38 F_1_414 equ 362 ; FIX(1.414213562) |
| 39 F_1_847 equ 473 ; FIX(1.847759065) |
| 40 F_2_613 equ 669 ; FIX(2.613125930) |
| 41 F_1_613 equ (F_2_613 - 256) ; FIX(2.613125930) - FIX(1) |
| 42 %else |
| 43 ; NASM cannot do compile-time arithmetic on floating-point constants. |
| 44 %define DESCALE(x,n) (((x)+(1<<((n)-1)))>>(n)) |
| 45 F_1_082 equ DESCALE(1162209775,30-CONST_BITS) ; FIX(1.082392200) |
| 46 F_1_414 equ DESCALE(1518500249,30-CONST_BITS) ; FIX(1.414213562) |
| 47 F_1_847 equ DESCALE(1984016188,30-CONST_BITS) ; FIX(1.847759065) |
| 48 F_2_613 equ DESCALE(2805822602,30-CONST_BITS) ; FIX(2.613125930) |
| 49 F_1_613 equ (F_2_613 - (1 << CONST_BITS)) ; FIX(2.613125930) - FIX(1) |
| 50 %endif |
| 51 |
| 52 ; -------------------------------------------------------------------------- |
| 53 SECTION SEG_CONST |
| 54 |
| 55 ; PRE_MULTIPLY_SCALE_BITS <= 2 (to avoid overflow) |
| 56 ; CONST_BITS + CONST_SHIFT + PRE_MULTIPLY_SCALE_BITS == 16 (for pmulhw) |
| 57 |
| 58 %define PRE_MULTIPLY_SCALE_BITS 2 |
| 59 %define CONST_SHIFT (16 - PRE_MULTIPLY_SCALE_BITS - CONST_BITS) |
| 60 |
| 61 alignz 16 |
| 62 global EXTN(jconst_idct_ifast_sse2) |
| 63 |
| 64 EXTN(jconst_idct_ifast_sse2): |
| 65 |
| 66 PW_F1414 times 8 dw F_1_414 << CONST_SHIFT |
| 67 PW_F1847 times 8 dw F_1_847 << CONST_SHIFT |
| 68 PW_MF1613 times 8 dw -F_1_613 << CONST_SHIFT |
| 69 PW_F1082 times 8 dw F_1_082 << CONST_SHIFT |
| 70 PB_CENTERJSAMP times 16 db CENTERJSAMPLE |
| 71 |
| 72 alignz 16 |
| 73 |
| 74 ; -------------------------------------------------------------------------- |
| 75 SECTION SEG_TEXT |
| 76 BITS 32 |
| 77 ; |
| 78 ; Perform dequantization and inverse DCT on one block of coefficients. |
| 79 ; |
| 80 ; GLOBAL(void) |
| 81 ; jsimd_idct_ifast_sse2 (void * dct_table, JCOEFPTR coef_block, |
| 82 ; JSAMPARRAY output_buf, JDIMENSION output_col) |
| 83 ; |
| 84 |
| 85 %define dct_table(b) (b)+8 ; jpeg_component_info * compptr |
| 86 %define coef_block(b) (b)+12 ; JCOEFPTR coef_block |
| 87 %define output_buf(b) (b)+16 ; JSAMPARRAY output_buf |
| 88 %define output_col(b) (b)+20 ; JDIMENSION output_col |
| 89 |
| 90 %define original_ebp ebp+0 |
| 91 %define wk(i) ebp-(WK_NUM-(i))*SIZEOF_XMMWORD ; xmmword wk[WK_NUM] |
| 92 %define WK_NUM 2 |
| 93 |
| 94 align 16 |
| 95 global EXTN(jsimd_idct_ifast_sse2) |
| 96 |
| 97 EXTN(jsimd_idct_ifast_sse2): |
| 98 push ebp |
| 99 mov eax,esp ; eax = original ebp |
| 100 sub esp, byte 4 |
| 101 and esp, byte (-SIZEOF_XMMWORD) ; align to 128 bits |
| 102 mov [esp],eax |
| 103 mov ebp,esp ; ebp = aligned ebp |
| 104 lea esp, [wk(0)] |
| 105 pushpic ebx |
| 106 ; push ecx ; unused |
| 107 ; push edx ; need not be preserved |
| 108 push esi |
| 109 push edi |
| 110 |
| 111 get_GOT ebx ; get GOT address |
| 112 |
| 113 ; ---- Pass 1: process columns from input. |
| 114 |
| 115 ; mov eax, [original_ebp] |
| 116 mov edx, POINTER [dct_table(eax)] ; quantptr |
| 117 mov esi, JCOEFPTR [coef_block(eax)] ; inptr |
| 118 |
| 119 %ifndef NO_ZERO_COLUMN_TEST_IFAST_SSE2 |
| 120 mov eax, DWORD [DWBLOCK(1,0,esi,SIZEOF_JCOEF)] |
| 121 or eax, DWORD [DWBLOCK(2,0,esi,SIZEOF_JCOEF)] |
| 122 jnz near .columnDCT |
| 123 |
| 124 movdqa xmm0, XMMWORD [XMMBLOCK(1,0,esi,SIZEOF_JCOEF)] |
| 125 movdqa xmm1, XMMWORD [XMMBLOCK(2,0,esi,SIZEOF_JCOEF)] |
| 126 por xmm0, XMMWORD [XMMBLOCK(3,0,esi,SIZEOF_JCOEF)] |
| 127 por xmm1, XMMWORD [XMMBLOCK(4,0,esi,SIZEOF_JCOEF)] |
| 128 por xmm0, XMMWORD [XMMBLOCK(5,0,esi,SIZEOF_JCOEF)] |
| 129 por xmm1, XMMWORD [XMMBLOCK(6,0,esi,SIZEOF_JCOEF)] |
| 130 por xmm0, XMMWORD [XMMBLOCK(7,0,esi,SIZEOF_JCOEF)] |
| 131 por xmm1,xmm0 |
| 132 packsswb xmm1,xmm1 |
| 133 packsswb xmm1,xmm1 |
| 134 movd eax,xmm1 |
| 135 test eax,eax |
| 136 jnz short .columnDCT |
| 137 |
| 138 ; -- AC terms all zero |
| 139 |
| 140 movdqa xmm0, XMMWORD [XMMBLOCK(0,0,esi,SIZEOF_JCOEF)] |
| 141 pmullw xmm0, XMMWORD [XMMBLOCK(0,0,edx,SIZEOF_ISLOW_MULT_TYPE)] |
| 142 |
| 143 movdqa xmm7,xmm0 ; xmm0=in0=(00 01 02 03 04 05 06 07) |
| 144 punpcklwd xmm0,xmm0 ; xmm0=(00 00 01 01 02 02 03 03) |
| 145 punpckhwd xmm7,xmm7 ; xmm7=(04 04 05 05 06 06 07 07) |
| 146 |
| 147 pshufd xmm6,xmm0,0x00 ; xmm6=col0=(00 00 00 00 00 00 00 00) |
| 148 pshufd xmm2,xmm0,0x55 ; xmm2=col1=(01 01 01 01 01 01 01 01) |
| 149 pshufd xmm5,xmm0,0xAA ; xmm5=col2=(02 02 02 02 02 02 02 02) |
| 150 pshufd xmm0,xmm0,0xFF ; xmm0=col3=(03 03 03 03 03 03 03 03) |
| 151 pshufd xmm1,xmm7,0x00 ; xmm1=col4=(04 04 04 04 04 04 04 04) |
| 152 pshufd xmm4,xmm7,0x55 ; xmm4=col5=(05 05 05 05 05 05 05 05) |
| 153 pshufd xmm3,xmm7,0xAA ; xmm3=col6=(06 06 06 06 06 06 06 06) |
| 154 pshufd xmm7,xmm7,0xFF ; xmm7=col7=(07 07 07 07 07 07 07 07) |
| 155 |
| 156 movdqa XMMWORD [wk(0)], xmm2 ; wk(0)=col1 |
| 157 movdqa XMMWORD [wk(1)], xmm0 ; wk(1)=col3 |
| 158 jmp near .column_end |
| 159 alignx 16,7 |
| 160 %endif |
| 161 .columnDCT: |
| 162 |
| 163 ; -- Even part |
| 164 |
| 165 movdqa xmm0, XMMWORD [XMMBLOCK(0,0,esi,SIZEOF_JCOEF)] |
| 166 movdqa xmm1, XMMWORD [XMMBLOCK(2,0,esi,SIZEOF_JCOEF)] |
| 167 pmullw xmm0, XMMWORD [XMMBLOCK(0,0,edx,SIZEOF_IFAST_MULT_TYPE)] |
| 168 pmullw xmm1, XMMWORD [XMMBLOCK(2,0,edx,SIZEOF_IFAST_MULT_TYPE)] |
| 169 movdqa xmm2, XMMWORD [XMMBLOCK(4,0,esi,SIZEOF_JCOEF)] |
| 170 movdqa xmm3, XMMWORD [XMMBLOCK(6,0,esi,SIZEOF_JCOEF)] |
| 171 pmullw xmm2, XMMWORD [XMMBLOCK(4,0,edx,SIZEOF_IFAST_MULT_TYPE)] |
| 172 pmullw xmm3, XMMWORD [XMMBLOCK(6,0,edx,SIZEOF_IFAST_MULT_TYPE)] |
| 173 |
| 174 movdqa xmm4,xmm0 |
| 175 movdqa xmm5,xmm1 |
| 176 psubw xmm0,xmm2 ; xmm0=tmp11 |
| 177 psubw xmm1,xmm3 |
| 178 paddw xmm4,xmm2 ; xmm4=tmp10 |
| 179 paddw xmm5,xmm3 ; xmm5=tmp13 |
| 180 |
| 181 psllw xmm1,PRE_MULTIPLY_SCALE_BITS |
| 182 pmulhw xmm1,[GOTOFF(ebx,PW_F1414)] |
| 183 psubw xmm1,xmm5 ; xmm1=tmp12 |
| 184 |
| 185 movdqa xmm6,xmm4 |
| 186 movdqa xmm7,xmm0 |
| 187 psubw xmm4,xmm5 ; xmm4=tmp3 |
| 188 psubw xmm0,xmm1 ; xmm0=tmp2 |
| 189 paddw xmm6,xmm5 ; xmm6=tmp0 |
| 190 paddw xmm7,xmm1 ; xmm7=tmp1 |
| 191 |
| 192 movdqa XMMWORD [wk(1)], xmm4 ; wk(1)=tmp3 |
| 193 movdqa XMMWORD [wk(0)], xmm0 ; wk(0)=tmp2 |
| 194 |
| 195 ; -- Odd part |
| 196 |
| 197 movdqa xmm2, XMMWORD [XMMBLOCK(1,0,esi,SIZEOF_JCOEF)] |
| 198 movdqa xmm3, XMMWORD [XMMBLOCK(3,0,esi,SIZEOF_JCOEF)] |
| 199 pmullw xmm2, XMMWORD [XMMBLOCK(1,0,edx,SIZEOF_IFAST_MULT_TYPE)] |
| 200 pmullw xmm3, XMMWORD [XMMBLOCK(3,0,edx,SIZEOF_IFAST_MULT_TYPE)] |
| 201 movdqa xmm5, XMMWORD [XMMBLOCK(5,0,esi,SIZEOF_JCOEF)] |
| 202 movdqa xmm1, XMMWORD [XMMBLOCK(7,0,esi,SIZEOF_JCOEF)] |
| 203 pmullw xmm5, XMMWORD [XMMBLOCK(5,0,edx,SIZEOF_IFAST_MULT_TYPE)] |
| 204 pmullw xmm1, XMMWORD [XMMBLOCK(7,0,edx,SIZEOF_IFAST_MULT_TYPE)] |
| 205 |
| 206 movdqa xmm4,xmm2 |
| 207 movdqa xmm0,xmm5 |
| 208 psubw xmm2,xmm1 ; xmm2=z12 |
| 209 psubw xmm5,xmm3 ; xmm5=z10 |
| 210 paddw xmm4,xmm1 ; xmm4=z11 |
| 211 paddw xmm0,xmm3 ; xmm0=z13 |
| 212 |
| 213 movdqa xmm1,xmm5 ; xmm1=z10(unscaled) |
| 214 psllw xmm2,PRE_MULTIPLY_SCALE_BITS |
| 215 psllw xmm5,PRE_MULTIPLY_SCALE_BITS |
| 216 |
| 217 movdqa xmm3,xmm4 |
| 218 psubw xmm4,xmm0 |
| 219 paddw xmm3,xmm0 ; xmm3=tmp7 |
| 220 |
| 221 psllw xmm4,PRE_MULTIPLY_SCALE_BITS |
| 222 pmulhw xmm4,[GOTOFF(ebx,PW_F1414)] ; xmm4=tmp11 |
| 223 |
| 224 ; To avoid overflow... |
| 225 ; |
| 226 ; (Original) |
| 227 ; tmp12 = -2.613125930 * z10 + z5; |
| 228 ; |
| 229 ; (This implementation) |
| 230 ; tmp12 = (-1.613125930 - 1) * z10 + z5; |
| 231 ; = -1.613125930 * z10 - z10 + z5; |
| 232 |
| 233 movdqa xmm0,xmm5 |
| 234 paddw xmm5,xmm2 |
| 235 pmulhw xmm5,[GOTOFF(ebx,PW_F1847)] ; xmm5=z5 |
| 236 pmulhw xmm0,[GOTOFF(ebx,PW_MF1613)] |
| 237 pmulhw xmm2,[GOTOFF(ebx,PW_F1082)] |
| 238 psubw xmm0,xmm1 |
| 239 psubw xmm2,xmm5 ; xmm2=tmp10 |
| 240 paddw xmm0,xmm5 ; xmm0=tmp12 |
| 241 |
| 242 ; -- Final output stage |
| 243 |
| 244 psubw xmm0,xmm3 ; xmm0=tmp6 |
| 245 movdqa xmm1,xmm6 |
| 246 movdqa xmm5,xmm7 |
| 247 paddw xmm6,xmm3 ; xmm6=data0=(00 01 02 03 04 05 06 07) |
| 248 paddw xmm7,xmm0 ; xmm7=data1=(10 11 12 13 14 15 16 17) |
| 249 psubw xmm1,xmm3 ; xmm1=data7=(70 71 72 73 74 75 76 77) |
| 250 psubw xmm5,xmm0 ; xmm5=data6=(60 61 62 63 64 65 66 67) |
| 251 psubw xmm4,xmm0 ; xmm4=tmp5 |
| 252 |
| 253 movdqa xmm3,xmm6 ; transpose coefficients(phase 1) |
| 254 punpcklwd xmm6,xmm7 ; xmm6=(00 10 01 11 02 12 03 13) |
| 255 punpckhwd xmm3,xmm7 ; xmm3=(04 14 05 15 06 16 07 17) |
| 256 movdqa xmm0,xmm5 ; transpose coefficients(phase 1) |
| 257 punpcklwd xmm5,xmm1 ; xmm5=(60 70 61 71 62 72 63 73) |
| 258 punpckhwd xmm0,xmm1 ; xmm0=(64 74 65 75 66 76 67 77) |
| 259 |
| 260 movdqa xmm7, XMMWORD [wk(0)] ; xmm7=tmp2 |
| 261 movdqa xmm1, XMMWORD [wk(1)] ; xmm1=tmp3 |
| 262 |
| 263 movdqa XMMWORD [wk(0)], xmm5 ; wk(0)=(60 70 61 71 62 72 63 73) |
| 264 movdqa XMMWORD [wk(1)], xmm0 ; wk(1)=(64 74 65 75 66 76 67 77) |
| 265 |
| 266 paddw xmm2,xmm4 ; xmm2=tmp4 |
| 267 movdqa xmm5,xmm7 |
| 268 movdqa xmm0,xmm1 |
| 269 paddw xmm7,xmm4 ; xmm7=data2=(20 21 22 23 24 25 26 27) |
| 270 paddw xmm1,xmm2 ; xmm1=data4=(40 41 42 43 44 45 46 47) |
| 271 psubw xmm5,xmm4 ; xmm5=data5=(50 51 52 53 54 55 56 57) |
| 272 psubw xmm0,xmm2 ; xmm0=data3=(30 31 32 33 34 35 36 37) |
| 273 |
| 274 movdqa xmm4,xmm7 ; transpose coefficients(phase 1) |
| 275 punpcklwd xmm7,xmm0 ; xmm7=(20 30 21 31 22 32 23 33) |
| 276 punpckhwd xmm4,xmm0 ; xmm4=(24 34 25 35 26 36 27 37) |
| 277 movdqa xmm2,xmm1 ; transpose coefficients(phase 1) |
| 278 punpcklwd xmm1,xmm5 ; xmm1=(40 50 41 51 42 52 43 53) |
| 279 punpckhwd xmm2,xmm5 ; xmm2=(44 54 45 55 46 56 47 57) |
| 280 |
| 281 movdqa xmm0,xmm3 ; transpose coefficients(phase 2) |
| 282 punpckldq xmm3,xmm4 ; xmm3=(04 14 24 34 05 15 25 35) |
| 283 punpckhdq xmm0,xmm4 ; xmm0=(06 16 26 36 07 17 27 37) |
| 284 movdqa xmm5,xmm6 ; transpose coefficients(phase 2) |
| 285 punpckldq xmm6,xmm7 ; xmm6=(00 10 20 30 01 11 21 31) |
| 286 punpckhdq xmm5,xmm7 ; xmm5=(02 12 22 32 03 13 23 33) |
| 287 |
| 288 movdqa xmm4, XMMWORD [wk(0)] ; xmm4=(60 70 61 71 62 72 63 73) |
| 289 movdqa xmm7, XMMWORD [wk(1)] ; xmm7=(64 74 65 75 66 76 67 77) |
| 290 |
| 291 movdqa XMMWORD [wk(0)], xmm3 ; wk(0)=(04 14 24 34 05 15 25 35) |
| 292 movdqa XMMWORD [wk(1)], xmm0 ; wk(1)=(06 16 26 36 07 17 27 37) |
| 293 |
| 294 movdqa xmm3,xmm1 ; transpose coefficients(phase 2) |
| 295 punpckldq xmm1,xmm4 ; xmm1=(40 50 60 70 41 51 61 71) |
| 296 punpckhdq xmm3,xmm4 ; xmm3=(42 52 62 72 43 53 63 73) |
| 297 movdqa xmm0,xmm2 ; transpose coefficients(phase 2) |
| 298 punpckldq xmm2,xmm7 ; xmm2=(44 54 64 74 45 55 65 75) |
| 299 punpckhdq xmm0,xmm7 ; xmm0=(46 56 66 76 47 57 67 77) |
| 300 |
| 301 movdqa xmm4,xmm6 ; transpose coefficients(phase 3) |
| 302 punpcklqdq xmm6,xmm1 ; xmm6=col0=(00 10 20 30 40 50 60 70) |
| 303 punpckhqdq xmm4,xmm1 ; xmm4=col1=(01 11 21 31 41 51 61 71) |
| 304 movdqa xmm7,xmm5 ; transpose coefficients(phase 3) |
| 305 punpcklqdq xmm5,xmm3 ; xmm5=col2=(02 12 22 32 42 52 62 72) |
| 306 punpckhqdq xmm7,xmm3 ; xmm7=col3=(03 13 23 33 43 53 63 73) |
| 307 |
| 308 movdqa xmm1, XMMWORD [wk(0)] ; xmm1=(04 14 24 34 05 15 25 35) |
| 309 movdqa xmm3, XMMWORD [wk(1)] ; xmm3=(06 16 26 36 07 17 27 37) |
| 310 |
| 311 movdqa XMMWORD [wk(0)], xmm4 ; wk(0)=col1 |
| 312 movdqa XMMWORD [wk(1)], xmm7 ; wk(1)=col3 |
| 313 |
| 314 movdqa xmm4,xmm1 ; transpose coefficients(phase 3) |
| 315 punpcklqdq xmm1,xmm2 ; xmm1=col4=(04 14 24 34 44 54 64 74) |
| 316 punpckhqdq xmm4,xmm2 ; xmm4=col5=(05 15 25 35 45 55 65 75) |
| 317 movdqa xmm7,xmm3 ; transpose coefficients(phase 3) |
| 318 punpcklqdq xmm3,xmm0 ; xmm3=col6=(06 16 26 36 46 56 66 76) |
| 319 punpckhqdq xmm7,xmm0 ; xmm7=col7=(07 17 27 37 47 57 67 77) |
| 320 .column_end: |
| 321 |
| 322 ; -- Prefetch the next coefficient block |
| 323 |
| 324 prefetchnta [esi + DCTSIZE2*SIZEOF_JCOEF + 0*32] |
| 325 prefetchnta [esi + DCTSIZE2*SIZEOF_JCOEF + 1*32] |
| 326 prefetchnta [esi + DCTSIZE2*SIZEOF_JCOEF + 2*32] |
| 327 prefetchnta [esi + DCTSIZE2*SIZEOF_JCOEF + 3*32] |
| 328 |
| 329 ; ---- Pass 2: process rows from work array, store into output array. |
| 330 |
| 331 mov eax, [original_ebp] |
| 332 mov edi, JSAMPARRAY [output_buf(eax)] ; (JSAMPROW *) |
| 333 mov eax, JDIMENSION [output_col(eax)] |
| 334 |
| 335 ; -- Even part |
| 336 |
| 337 ; xmm6=col0, xmm5=col2, xmm1=col4, xmm3=col6 |
| 338 |
| 339 movdqa xmm2,xmm6 |
| 340 movdqa xmm0,xmm5 |
| 341 psubw xmm6,xmm1 ; xmm6=tmp11 |
| 342 psubw xmm5,xmm3 |
| 343 paddw xmm2,xmm1 ; xmm2=tmp10 |
| 344 paddw xmm0,xmm3 ; xmm0=tmp13 |
| 345 |
| 346 psllw xmm5,PRE_MULTIPLY_SCALE_BITS |
| 347 pmulhw xmm5,[GOTOFF(ebx,PW_F1414)] |
| 348 psubw xmm5,xmm0 ; xmm5=tmp12 |
| 349 |
| 350 movdqa xmm1,xmm2 |
| 351 movdqa xmm3,xmm6 |
| 352 psubw xmm2,xmm0 ; xmm2=tmp3 |
| 353 psubw xmm6,xmm5 ; xmm6=tmp2 |
| 354 paddw xmm1,xmm0 ; xmm1=tmp0 |
| 355 paddw xmm3,xmm5 ; xmm3=tmp1 |
| 356 |
| 357 movdqa xmm0, XMMWORD [wk(0)] ; xmm0=col1 |
| 358 movdqa xmm5, XMMWORD [wk(1)] ; xmm5=col3 |
| 359 |
| 360 movdqa XMMWORD [wk(0)], xmm2 ; wk(0)=tmp3 |
| 361 movdqa XMMWORD [wk(1)], xmm6 ; wk(1)=tmp2 |
| 362 |
| 363 ; -- Odd part |
| 364 |
| 365 ; xmm0=col1, xmm5=col3, xmm4=col5, xmm7=col7 |
| 366 |
| 367 movdqa xmm2,xmm0 |
| 368 movdqa xmm6,xmm4 |
| 369 psubw xmm0,xmm7 ; xmm0=z12 |
| 370 psubw xmm4,xmm5 ; xmm4=z10 |
| 371 paddw xmm2,xmm7 ; xmm2=z11 |
| 372 paddw xmm6,xmm5 ; xmm6=z13 |
| 373 |
| 374 movdqa xmm7,xmm4 ; xmm7=z10(unscaled) |
| 375 psllw xmm0,PRE_MULTIPLY_SCALE_BITS |
| 376 psllw xmm4,PRE_MULTIPLY_SCALE_BITS |
| 377 |
| 378 movdqa xmm5,xmm2 |
| 379 psubw xmm2,xmm6 |
| 380 paddw xmm5,xmm6 ; xmm5=tmp7 |
| 381 |
| 382 psllw xmm2,PRE_MULTIPLY_SCALE_BITS |
| 383 pmulhw xmm2,[GOTOFF(ebx,PW_F1414)] ; xmm2=tmp11 |
| 384 |
| 385 ; To avoid overflow... |
| 386 ; |
| 387 ; (Original) |
| 388 ; tmp12 = -2.613125930 * z10 + z5; |
| 389 ; |
| 390 ; (This implementation) |
| 391 ; tmp12 = (-1.613125930 - 1) * z10 + z5; |
| 392 ; = -1.613125930 * z10 - z10 + z5; |
| 393 |
| 394 movdqa xmm6,xmm4 |
| 395 paddw xmm4,xmm0 |
| 396 pmulhw xmm4,[GOTOFF(ebx,PW_F1847)] ; xmm4=z5 |
| 397 pmulhw xmm6,[GOTOFF(ebx,PW_MF1613)] |
| 398 pmulhw xmm0,[GOTOFF(ebx,PW_F1082)] |
| 399 psubw xmm6,xmm7 |
| 400 psubw xmm0,xmm4 ; xmm0=tmp10 |
| 401 paddw xmm6,xmm4 ; xmm6=tmp12 |
| 402 |
| 403 ; -- Final output stage |
| 404 |
| 405 psubw xmm6,xmm5 ; xmm6=tmp6 |
| 406 movdqa xmm7,xmm1 |
| 407 movdqa xmm4,xmm3 |
| 408 paddw xmm1,xmm5 ; xmm1=data0=(00 10 20 30 40 50 60 70) |
| 409 paddw xmm3,xmm6 ; xmm3=data1=(01 11 21 31 41 51 61 71) |
| 410 psraw xmm1,(PASS1_BITS+3) ; descale |
| 411 psraw xmm3,(PASS1_BITS+3) ; descale |
| 412 psubw xmm7,xmm5 ; xmm7=data7=(07 17 27 37 47 57 67 77) |
| 413 psubw xmm4,xmm6 ; xmm4=data6=(06 16 26 36 46 56 66 76) |
| 414 psraw xmm7,(PASS1_BITS+3) ; descale |
| 415 psraw xmm4,(PASS1_BITS+3) ; descale |
| 416 psubw xmm2,xmm6 ; xmm2=tmp5 |
| 417 |
| 418 packsswb xmm1,xmm4 ; xmm1=(00 10 20 30 40 50 60 70 06 16 26 36 46 5
6 66 76) |
| 419 packsswb xmm3,xmm7 ; xmm3=(01 11 21 31 41 51 61 71 07 17 27 37 47 5
7 67 77) |
| 420 |
| 421 movdqa xmm5, XMMWORD [wk(1)] ; xmm5=tmp2 |
| 422 movdqa xmm6, XMMWORD [wk(0)] ; xmm6=tmp3 |
| 423 |
| 424 paddw xmm0,xmm2 ; xmm0=tmp4 |
| 425 movdqa xmm4,xmm5 |
| 426 movdqa xmm7,xmm6 |
| 427 paddw xmm5,xmm2 ; xmm5=data2=(02 12 22 32 42 52 62 72) |
| 428 paddw xmm6,xmm0 ; xmm6=data4=(04 14 24 34 44 54 64 74) |
| 429 psraw xmm5,(PASS1_BITS+3) ; descale |
| 430 psraw xmm6,(PASS1_BITS+3) ; descale |
| 431 psubw xmm4,xmm2 ; xmm4=data5=(05 15 25 35 45 55 65 75) |
| 432 psubw xmm7,xmm0 ; xmm7=data3=(03 13 23 33 43 53 63 73) |
| 433 psraw xmm4,(PASS1_BITS+3) ; descale |
| 434 psraw xmm7,(PASS1_BITS+3) ; descale |
| 435 |
| 436 movdqa xmm2,[GOTOFF(ebx,PB_CENTERJSAMP)] ; xmm2=[PB_CENTERJSAMP] |
| 437 |
| 438 packsswb xmm5,xmm6 ; xmm5=(02 12 22 32 42 52 62 72 04 14 24 34 44 5
4 64 74) |
| 439 packsswb xmm7,xmm4 ; xmm7=(03 13 23 33 43 53 63 73 05 15 25 35 45 5
5 65 75) |
| 440 |
| 441 paddb xmm1,xmm2 |
| 442 paddb xmm3,xmm2 |
| 443 paddb xmm5,xmm2 |
| 444 paddb xmm7,xmm2 |
| 445 |
| 446 movdqa xmm0,xmm1 ; transpose coefficients(phase 1) |
| 447 punpcklbw xmm1,xmm3 ; xmm1=(00 01 10 11 20 21 30 31 40 41 50 51 60 6
1 70 71) |
| 448 punpckhbw xmm0,xmm3 ; xmm0=(06 07 16 17 26 27 36 37 46 47 56 57 66 6
7 76 77) |
| 449 movdqa xmm6,xmm5 ; transpose coefficients(phase 1) |
| 450 punpcklbw xmm5,xmm7 ; xmm5=(02 03 12 13 22 23 32 33 42 43 52 53 62 6
3 72 73) |
| 451 punpckhbw xmm6,xmm7 ; xmm6=(04 05 14 15 24 25 34 35 44 45 54 55 64 6
5 74 75) |
| 452 |
| 453 movdqa xmm4,xmm1 ; transpose coefficients(phase 2) |
| 454 punpcklwd xmm1,xmm5 ; xmm1=(00 01 02 03 10 11 12 13 20 21 22 23 30 3
1 32 33) |
| 455 punpckhwd xmm4,xmm5 ; xmm4=(40 41 42 43 50 51 52 53 60 61 62 63 70 7
1 72 73) |
| 456 movdqa xmm2,xmm6 ; transpose coefficients(phase 2) |
| 457 punpcklwd xmm6,xmm0 ; xmm6=(04 05 06 07 14 15 16 17 24 25 26 27 34 3
5 36 37) |
| 458 punpckhwd xmm2,xmm0 ; xmm2=(44 45 46 47 54 55 56 57 64 65 66 67 74 7
5 76 77) |
| 459 |
| 460 movdqa xmm3,xmm1 ; transpose coefficients(phase 3) |
| 461 punpckldq xmm1,xmm6 ; xmm1=(00 01 02 03 04 05 06 07 10 11 12 13 14 1
5 16 17) |
| 462 punpckhdq xmm3,xmm6 ; xmm3=(20 21 22 23 24 25 26 27 30 31 32 33 34 3
5 36 37) |
| 463 movdqa xmm7,xmm4 ; transpose coefficients(phase 3) |
| 464 punpckldq xmm4,xmm2 ; xmm4=(40 41 42 43 44 45 46 47 50 51 52 53 54 5
5 56 57) |
| 465 punpckhdq xmm7,xmm2 ; xmm7=(60 61 62 63 64 65 66 67 70 71 72 73 74 7
5 76 77) |
| 466 |
| 467 pshufd xmm5,xmm1,0x4E ; xmm5=(10 11 12 13 14 15 16 17 00 01 02 03 04 0
5 06 07) |
| 468 pshufd xmm0,xmm3,0x4E ; xmm0=(30 31 32 33 34 35 36 37 20 21 22 23 24 2
5 26 27) |
| 469 pshufd xmm6,xmm4,0x4E ; xmm6=(50 51 52 53 54 55 56 57 40 41 42 43 44 4
5 46 47) |
| 470 pshufd xmm2,xmm7,0x4E ; xmm2=(70 71 72 73 74 75 76 77 60 61 62 63 64 6
5 66 67) |
| 471 |
| 472 mov edx, JSAMPROW [edi+0*SIZEOF_JSAMPROW] |
| 473 mov esi, JSAMPROW [edi+2*SIZEOF_JSAMPROW] |
| 474 movq XMM_MMWORD [edx+eax*SIZEOF_JSAMPLE], xmm1 |
| 475 movq XMM_MMWORD [esi+eax*SIZEOF_JSAMPLE], xmm3 |
| 476 mov edx, JSAMPROW [edi+4*SIZEOF_JSAMPROW] |
| 477 mov esi, JSAMPROW [edi+6*SIZEOF_JSAMPROW] |
| 478 movq XMM_MMWORD [edx+eax*SIZEOF_JSAMPLE], xmm4 |
| 479 movq XMM_MMWORD [esi+eax*SIZEOF_JSAMPLE], xmm7 |
| 480 |
| 481 mov edx, JSAMPROW [edi+1*SIZEOF_JSAMPROW] |
| 482 mov esi, JSAMPROW [edi+3*SIZEOF_JSAMPROW] |
| 483 movq XMM_MMWORD [edx+eax*SIZEOF_JSAMPLE], xmm5 |
| 484 movq XMM_MMWORD [esi+eax*SIZEOF_JSAMPLE], xmm0 |
| 485 mov edx, JSAMPROW [edi+5*SIZEOF_JSAMPROW] |
| 486 mov esi, JSAMPROW [edi+7*SIZEOF_JSAMPROW] |
| 487 movq XMM_MMWORD [edx+eax*SIZEOF_JSAMPLE], xmm6 |
| 488 movq XMM_MMWORD [esi+eax*SIZEOF_JSAMPLE], xmm2 |
| 489 |
| 490 pop edi |
| 491 pop esi |
| 492 ; pop edx ; need not be preserved |
| 493 ; pop ecx ; unused |
| 494 poppic ebx |
| 495 mov esp,ebp ; esp <- aligned ebp |
| 496 pop esp ; esp <- original ebp |
| 497 pop ebp |
| 498 ret |
| 499 |
| 500 ; For some reason, the OS X linker does not honor the request to align the |
| 501 ; segment unless we do this. |
| 502 align 16 |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 4134011:
Adds libjpeg-turbo to deps... (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/deps/