1 ; 2 ; jdsample.asm - upsampling (SSE2) 3 ; 4 ; Copyright 2009 Pierre Ossman <ossman (a] cendio.se> for Cendio AB 5 ; 6 ; Based on the x86 SIMD extension for IJG JPEG library 7 ; Copyright (C) 1999-2006, MIYASAKA Masaru. 8 ; For conditions of distribution and use, see copyright notice in jsimdext.inc 9 ; 10 ; This file should be assembled with NASM (Netwide Assembler), 11 ; can *not* be assembled with Microsoft's MASM or any compatible 12 ; assembler (including Borland's Turbo Assembler). 13 ; NASM is available from http://nasm.sourceforge.net/ or 14 ; http://sourceforge.net/project/showfiles.php?group_id=6208 15 ; 16 ; [TAB8] 17 18 %include "jsimdext.inc" 19 20 ; -------------------------------------------------------------------------- 21 SECTION SEG_CONST 22 23 alignz 16 24 global EXTN(jconst_fancy_upsample_sse2) 25 26 EXTN(jconst_fancy_upsample_sse2): 27 28 PW_ONE times 8 dw 1 29 PW_TWO times 8 dw 2 30 PW_THREE times 8 dw 3 31 PW_SEVEN times 8 dw 7 32 PW_EIGHT times 8 dw 8 33 34 alignz 16 35 36 ; -------------------------------------------------------------------------- 37 SECTION SEG_TEXT 38 BITS 32 39 ; 40 ; Fancy processing for the common case of 2:1 horizontal and 1:1 vertical. 41 ; 42 ; The upsampling algorithm is linear interpolation between pixel centers, 43 ; also known as a "triangle filter". This is a good compromise between 44 ; speed and visual quality. The centers of the output pixels are 1/4 and 3/4 45 ; of the way between input pixel centers. 46 ; 47 ; GLOBAL(void) 48 ; jsimd_h2v1_fancy_upsample_sse2 (int max_v_samp_factor, 49 ; JDIMENSION downsampled_width, 50 ; JSAMPARRAY input_data, 51 ; JSAMPARRAY *output_data_ptr); 52 ; 53 54 %define max_v_samp(b) (b)+8 ; int max_v_samp_factor 55 %define downsamp_width(b) (b)+12 ; JDIMENSION downsampled_width 56 %define input_data(b) (b)+16 ; JSAMPARRAY input_data 57 %define output_data_ptr(b) (b)+20 ; JSAMPARRAY *output_data_ptr 58 59 align 16 60 global EXTN(jsimd_h2v1_fancy_upsample_sse2) 61 62 EXTN(jsimd_h2v1_fancy_upsample_sse2): 63 push ebp 64 mov ebp,esp 65 pushpic ebx 66 ; push ecx ; need not be preserved 67 ; push edx ; need not be preserved 68 push esi 69 push edi 70 71 get_GOT ebx ; get GOT address 72 73 mov eax, JDIMENSION [downsamp_width(ebp)] ; colctr 74 test eax,eax 75 jz near .return 76 77 mov ecx, INT [max_v_samp(ebp)] ; rowctr 78 test ecx,ecx 79 jz near .return 80 81 mov esi, JSAMPARRAY [input_data(ebp)] ; input_data 82 mov edi, POINTER [output_data_ptr(ebp)] 83 mov edi, JSAMPARRAY [edi] ; output_data 84 alignx 16,7 85 .rowloop: 86 push eax ; colctr 87 push edi 88 push esi 89 90 mov esi, JSAMPROW [esi] ; inptr 91 mov edi, JSAMPROW [edi] ; outptr 92 93 test eax, SIZEOF_XMMWORD-1 94 jz short .skip 95 mov dl, JSAMPLE [esi+(eax-1)*SIZEOF_JSAMPLE] 96 mov JSAMPLE [esi+eax*SIZEOF_JSAMPLE], dl ; insert a dummy sample 97 .skip: 98 pxor xmm0,xmm0 ; xmm0=(all 0's) 99 pcmpeqb xmm7,xmm7 100 psrldq xmm7,(SIZEOF_XMMWORD-1) 101 pand xmm7, XMMWORD [esi+0*SIZEOF_XMMWORD] 102 103 add eax, byte SIZEOF_XMMWORD-1 104 and eax, byte -SIZEOF_XMMWORD 105 cmp eax, byte SIZEOF_XMMWORD 106 ja short .columnloop 107 alignx 16,7 108 109 .columnloop_last: 110 pcmpeqb xmm6,xmm6 111 pslldq xmm6,(SIZEOF_XMMWORD-1) 112 pand xmm6, XMMWORD [esi+0*SIZEOF_XMMWORD] 113 jmp short .upsample 114 alignx 16,7 115 116 .columnloop: 117 movdqa xmm6, XMMWORD [esi+1*SIZEOF_XMMWORD] 118 pslldq xmm6,(SIZEOF_XMMWORD-1) 119 120 .upsample: 121 movdqa xmm1, XMMWORD [esi+0*SIZEOF_XMMWORD] 122 movdqa xmm2,xmm1 123 movdqa xmm3,xmm1 ; xmm1=( 0 1 2 ... 13 14 15) 124 pslldq xmm2,1 ; xmm2=(-- 0 1 ... 12 13 14) 125 psrldq xmm3,1 ; xmm3=( 1 2 3 ... 14 15 --) 126 127 por xmm2,xmm7 ; xmm2=(-1 0 1 ... 12 13 14) 128 por xmm3,xmm6 ; xmm3=( 1 2 3 ... 14 15 16) 129 130 movdqa xmm7,xmm1 131 psrldq xmm7,(SIZEOF_XMMWORD-1) ; xmm7=(15 -- -- ... -- -- --) 132 133 movdqa xmm4,xmm1 134 punpcklbw xmm1,xmm0 ; xmm1=( 0 1 2 3 4 5 6 7) 135 punpckhbw xmm4,xmm0 ; xmm4=( 8 9 10 11 12 13 14 15) 136 movdqa xmm5,xmm2 137 punpcklbw xmm2,xmm0 ; xmm2=(-1 0 1 2 3 4 5 6) 138 punpckhbw xmm5,xmm0 ; xmm5=( 7 8 9 10 11 12 13 14) 139 movdqa xmm6,xmm3 140 punpcklbw xmm3,xmm0 ; xmm3=( 1 2 3 4 5 6 7 8) 141 punpckhbw xmm6,xmm0 ; xmm6=( 9 10 11 12 13 14 15 16) 142 143 pmullw xmm1,[GOTOFF(ebx,PW_THREE)] 144 pmullw xmm4,[GOTOFF(ebx,PW_THREE)] 145 paddw xmm2,[GOTOFF(ebx,PW_ONE)] 146 paddw xmm5,[GOTOFF(ebx,PW_ONE)] 147 paddw xmm3,[GOTOFF(ebx,PW_TWO)] 148 paddw xmm6,[GOTOFF(ebx,PW_TWO)] 149 150 paddw xmm2,xmm1 151 paddw xmm5,xmm4 152 psrlw xmm2,2 ; xmm2=OutLE=( 0 2 4 6 8 10 12 14) 153 psrlw xmm5,2 ; xmm5=OutHE=(16 18 20 22 24 26 28 30) 154 paddw xmm3,xmm1 155 paddw xmm6,xmm4 156 psrlw xmm3,2 ; xmm3=OutLO=( 1 3 5 7 9 11 13 15) 157 psrlw xmm6,2 ; xmm6=OutHO=(17 19 21 23 25 27 29 31) 158 159 psllw xmm3,BYTE_BIT 160 psllw xmm6,BYTE_BIT 161 por xmm2,xmm3 ; xmm2=OutL=( 0 1 2 ... 13 14 15) 162 por xmm5,xmm6 ; xmm5=OutH=(16 17 18 ... 29 30 31) 163 164 movdqa XMMWORD [edi+0*SIZEOF_XMMWORD], xmm2 165 movdqa XMMWORD [edi+1*SIZEOF_XMMWORD], xmm5 166 167 sub eax, byte SIZEOF_XMMWORD 168 add esi, byte 1*SIZEOF_XMMWORD ; inptr 169 add edi, byte 2*SIZEOF_XMMWORD ; outptr 170 cmp eax, byte SIZEOF_XMMWORD 171 ja near .columnloop 172 test eax,eax 173 jnz near .columnloop_last 174 175 pop esi 176 pop edi 177 pop eax 178 179 add esi, byte SIZEOF_JSAMPROW ; input_data 180 add edi, byte SIZEOF_JSAMPROW ; output_data 181 dec ecx ; rowctr 182 jg near .rowloop 183 184 .return: 185 pop edi 186 pop esi 187 ; pop edx ; need not be preserved 188 ; pop ecx ; need not be preserved 189 poppic ebx 190 pop ebp 191 ret 192 193 ; -------------------------------------------------------------------------- 194 ; 195 ; Fancy processing for the common case of 2:1 horizontal and 2:1 vertical. 196 ; Again a triangle filter; see comments for h2v1 case, above. 197 ; 198 ; GLOBAL(void) 199 ; jsimd_h2v2_fancy_upsample_sse2 (int max_v_samp_factor, 200 ; JDIMENSION downsampled_width, 201 ; JSAMPARRAY input_data, 202 ; JSAMPARRAY *output_data_ptr); 203 ; 204 205 %define max_v_samp(b) (b)+8 ; int max_v_samp_factor 206 %define downsamp_width(b) (b)+12 ; JDIMENSION downsampled_width 207 %define input_data(b) (b)+16 ; JSAMPARRAY input_data 208 %define output_data_ptr(b) (b)+20 ; JSAMPARRAY *output_data_ptr 209 210 %define original_ebp ebp+0 211 %define wk(i) ebp-(WK_NUM-(i))*SIZEOF_XMMWORD ; xmmword wk[WK_NUM] 212 %define WK_NUM 4 213 %define gotptr wk(0)-SIZEOF_POINTER ; void *gotptr 214 215 align 16 216 global EXTN(jsimd_h2v2_fancy_upsample_sse2) 217 218 EXTN(jsimd_h2v2_fancy_upsample_sse2): 219 push ebp 220 mov eax,esp ; eax = original ebp 221 sub esp, byte 4 222 and esp, byte (-SIZEOF_XMMWORD) ; align to 128 bits 223 mov [esp],eax 224 mov ebp,esp ; ebp = aligned ebp 225 lea esp, [wk(0)] 226 pushpic eax ; make a room for GOT address 227 push ebx 228 ; push ecx ; need not be preserved 229 ; push edx ; need not be preserved 230 push esi 231 push edi 232 233 get_GOT ebx ; get GOT address 234 movpic POINTER [gotptr], ebx ; save GOT address 235 236 mov edx,eax ; edx = original ebp 237 mov eax, JDIMENSION [downsamp_width(edx)] ; colctr 238 test eax,eax 239 jz near .return 240 241 mov ecx, INT [max_v_samp(edx)] ; rowctr 242 test ecx,ecx 243 jz near .return 244 245 mov esi, JSAMPARRAY [input_data(edx)] ; input_data 246 mov edi, POINTER [output_data_ptr(edx)] 247 mov edi, JSAMPARRAY [edi] ; output_data 248 alignx 16,7 249 .rowloop: 250 push eax ; colctr 251 push ecx 252 push edi 253 push esi 254 255 mov ecx, JSAMPROW [esi-1*SIZEOF_JSAMPROW] ; inptr1(above) 256 mov ebx, JSAMPROW [esi+0*SIZEOF_JSAMPROW] ; inptr0 257 mov esi, JSAMPROW [esi+1*SIZEOF_JSAMPROW] ; inptr1(below) 258 mov edx, JSAMPROW [edi+0*SIZEOF_JSAMPROW] ; outptr0 259 mov edi, JSAMPROW [edi+1*SIZEOF_JSAMPROW] ; outptr1 260 261 test eax, SIZEOF_XMMWORD-1 262 jz short .skip 263 push edx 264 mov dl, JSAMPLE [ecx+(eax-1)*SIZEOF_JSAMPLE] 265 mov JSAMPLE [ecx+eax*SIZEOF_JSAMPLE], dl 266 mov dl, JSAMPLE [ebx+(eax-1)*SIZEOF_JSAMPLE] 267 mov JSAMPLE [ebx+eax*SIZEOF_JSAMPLE], dl 268 mov dl, JSAMPLE [esi+(eax-1)*SIZEOF_JSAMPLE] 269 mov JSAMPLE [esi+eax*SIZEOF_JSAMPLE], dl ; insert a dummy sample 270 pop edx 271 .skip: 272 ; -- process the first column block 273 274 movdqa xmm0, XMMWORD [ebx+0*SIZEOF_XMMWORD] ; xmm0=row[ 0][0] 275 movdqa xmm1, XMMWORD [ecx+0*SIZEOF_XMMWORD] ; xmm1=row[-1][0] 276 movdqa xmm2, XMMWORD [esi+0*SIZEOF_XMMWORD] ; xmm2=row[+1][0] 277 278 pushpic ebx 279 movpic ebx, POINTER [gotptr] ; load GOT address 280 281 pxor xmm3,xmm3 ; xmm3=(all 0's) 282 movdqa xmm4,xmm0 283 punpcklbw xmm0,xmm3 ; xmm0=row[ 0]( 0 1 2 3 4 5 6 7) 284 punpckhbw xmm4,xmm3 ; xmm4=row[ 0]( 8 9 10 11 12 13 14 15) 285 movdqa xmm5,xmm1 286 punpcklbw xmm1,xmm3 ; xmm1=row[-1]( 0 1 2 3 4 5 6 7) 287 punpckhbw xmm5,xmm3 ; xmm5=row[-1]( 8 9 10 11 12 13 14 15) 288 movdqa xmm6,xmm2 289 punpcklbw xmm2,xmm3 ; xmm2=row[+1]( 0 1 2 3 4 5 6 7) 290 punpckhbw xmm6,xmm3 ; xmm6=row[+1]( 8 9 10 11 12 13 14 15) 291 292 pmullw xmm0,[GOTOFF(ebx,PW_THREE)] 293 pmullw xmm4,[GOTOFF(ebx,PW_THREE)] 294 295 pcmpeqb xmm7,xmm7 296 psrldq xmm7,(SIZEOF_XMMWORD-2) 297 298 paddw xmm1,xmm0 ; xmm1=Int0L=( 0 1 2 3 4 5 6 7) 299 paddw xmm5,xmm4 ; xmm5=Int0H=( 8 9 10 11 12 13 14 15) 300 paddw xmm2,xmm0 ; xmm2=Int1L=( 0 1 2 3 4 5 6 7) 301 paddw xmm6,xmm4 ; xmm6=Int1H=( 8 9 10 11 12 13 14 15) 302 303 movdqa XMMWORD [edx+0*SIZEOF_XMMWORD], xmm1 ; temporarily save 304 movdqa XMMWORD [edx+1*SIZEOF_XMMWORD], xmm5 ; the intermediate data 305 movdqa XMMWORD [edi+0*SIZEOF_XMMWORD], xmm2 306 movdqa XMMWORD [edi+1*SIZEOF_XMMWORD], xmm6 307 308 pand xmm1,xmm7 ; xmm1=( 0 -- -- -- -- -- -- --) 309 pand xmm2,xmm7 ; xmm2=( 0 -- -- -- -- -- -- --) 310 311 movdqa XMMWORD [wk(0)], xmm1 312 movdqa XMMWORD [wk(1)], xmm2 313 314 poppic ebx 315 316 add eax, byte SIZEOF_XMMWORD-1 317 and eax, byte -SIZEOF_XMMWORD 318 cmp eax, byte SIZEOF_XMMWORD 319 ja short .columnloop 320 alignx 16,7 321 322 .columnloop_last: 323 ; -- process the last column block 324 325 pushpic ebx 326 movpic ebx, POINTER [gotptr] ; load GOT address 327 328 pcmpeqb xmm1,xmm1 329 pslldq xmm1,(SIZEOF_XMMWORD-2) 330 movdqa xmm2,xmm1 331 332 pand xmm1, XMMWORD [edx+1*SIZEOF_XMMWORD] 333 pand xmm2, XMMWORD [edi+1*SIZEOF_XMMWORD] 334 335 movdqa XMMWORD [wk(2)], xmm1 ; xmm1=(-- -- -- -- -- -- -- 15) 336 movdqa XMMWORD [wk(3)], xmm2 ; xmm2=(-- -- -- -- -- -- -- 15) 337 338 jmp near .upsample 339 alignx 16,7 340 341 .columnloop: 342 ; -- process the next column block 343 344 movdqa xmm0, XMMWORD [ebx+1*SIZEOF_XMMWORD] ; xmm0=row[ 0][1] 345 movdqa xmm1, XMMWORD [ecx+1*SIZEOF_XMMWORD] ; xmm1=row[-1][1] 346 movdqa xmm2, XMMWORD [esi+1*SIZEOF_XMMWORD] ; xmm2=row[+1][1] 347 348 pushpic ebx 349 movpic ebx, POINTER [gotptr] ; load GOT address 350 351 pxor xmm3,xmm3 ; xmm3=(all 0's) 352 movdqa xmm4,xmm0 353 punpcklbw xmm0,xmm3 ; xmm0=row[ 0]( 0 1 2 3 4 5 6 7) 354 punpckhbw xmm4,xmm3 ; xmm4=row[ 0]( 8 9 10 11 12 13 14 15) 355 movdqa xmm5,xmm1 356 punpcklbw xmm1,xmm3 ; xmm1=row[-1]( 0 1 2 3 4 5 6 7) 357 punpckhbw xmm5,xmm3 ; xmm5=row[-1]( 8 9 10 11 12 13 14 15) 358 movdqa xmm6,xmm2 359 punpcklbw xmm2,xmm3 ; xmm2=row[+1]( 0 1 2 3 4 5 6 7) 360 punpckhbw xmm6,xmm3 ; xmm6=row[+1]( 8 9 10 11 12 13 14 15) 361 362 pmullw xmm0,[GOTOFF(ebx,PW_THREE)] 363 pmullw xmm4,[GOTOFF(ebx,PW_THREE)] 364 365 paddw xmm1,xmm0 ; xmm1=Int0L=( 0 1 2 3 4 5 6 7) 366 paddw xmm5,xmm4 ; xmm5=Int0H=( 8 9 10 11 12 13 14 15) 367 paddw xmm2,xmm0 ; xmm2=Int1L=( 0 1 2 3 4 5 6 7) 368 paddw xmm6,xmm4 ; xmm6=Int1H=( 8 9 10 11 12 13 14 15) 369 370 movdqa XMMWORD [edx+2*SIZEOF_XMMWORD], xmm1 ; temporarily save 371 movdqa XMMWORD [edx+3*SIZEOF_XMMWORD], xmm5 ; the intermediate data 372 movdqa XMMWORD [edi+2*SIZEOF_XMMWORD], xmm2 373 movdqa XMMWORD [edi+3*SIZEOF_XMMWORD], xmm6 374 375 pslldq xmm1,(SIZEOF_XMMWORD-2) ; xmm1=(-- -- -- -- -- -- -- 0) 376 pslldq xmm2,(SIZEOF_XMMWORD-2) ; xmm2=(-- -- -- -- -- -- -- 0) 377 378 movdqa XMMWORD [wk(2)], xmm1 379 movdqa XMMWORD [wk(3)], xmm2 380 381 .upsample: 382 ; -- process the upper row 383 384 movdqa xmm7, XMMWORD [edx+0*SIZEOF_XMMWORD] 385 movdqa xmm3, XMMWORD [edx+1*SIZEOF_XMMWORD] 386 387 movdqa xmm0,xmm7 ; xmm7=Int0L=( 0 1 2 3 4 5 6 7) 388 movdqa xmm4,xmm3 ; xmm3=Int0H=( 8 9 10 11 12 13 14 15) 389 psrldq xmm0,2 ; xmm0=( 1 2 3 4 5 6 7 --) 390 pslldq xmm4,(SIZEOF_XMMWORD-2) ; xmm4=(-- -- -- -- -- -- -- 8) 391 movdqa xmm5,xmm7 392 movdqa xmm6,xmm3 393 psrldq xmm5,(SIZEOF_XMMWORD-2) ; xmm5=( 7 -- -- -- -- -- -- --) 394 pslldq xmm6,2 ; xmm6=(-- 8 9 10 11 12 13 14) 395 396 por xmm0,xmm4 ; xmm0=( 1 2 3 4 5 6 7 8) 397 por xmm5,xmm6 ; xmm5=( 7 8 9 10 11 12 13 14) 398 399 movdqa xmm1,xmm7 400 movdqa xmm2,xmm3 401 pslldq xmm1,2 ; xmm1=(-- 0 1 2 3 4 5 6) 402 psrldq xmm2,2 ; xmm2=( 9 10 11 12 13 14 15 --) 403 movdqa xmm4,xmm3 404 psrldq xmm4,(SIZEOF_XMMWORD-2) ; xmm4=(15 -- -- -- -- -- -- --) 405 406 por xmm1, XMMWORD [wk(0)] ; xmm1=(-1 0 1 2 3 4 5 6) 407 por xmm2, XMMWORD [wk(2)] ; xmm2=( 9 10 11 12 13 14 15 16) 408 409 movdqa XMMWORD [wk(0)], xmm4 410 411 pmullw xmm7,[GOTOFF(ebx,PW_THREE)] 412 pmullw xmm3,[GOTOFF(ebx,PW_THREE)] 413 paddw xmm1,[GOTOFF(ebx,PW_EIGHT)] 414 paddw xmm5,[GOTOFF(ebx,PW_EIGHT)] 415 paddw xmm0,[GOTOFF(ebx,PW_SEVEN)] 416 paddw xmm2,[GOTOFF(ebx,PW_SEVEN)] 417 418 paddw xmm1,xmm7 419 paddw xmm5,xmm3 420 psrlw xmm1,4 ; xmm1=Out0LE=( 0 2 4 6 8 10 12 14) 421 psrlw xmm5,4 ; xmm5=Out0HE=(16 18 20 22 24 26 28 30) 422 paddw xmm0,xmm7 423 paddw xmm2,xmm3 424 psrlw xmm0,4 ; xmm0=Out0LO=( 1 3 5 7 9 11 13 15) 425 psrlw xmm2,4 ; xmm2=Out0HO=(17 19 21 23 25 27 29 31) 426 427 psllw xmm0,BYTE_BIT 428 psllw xmm2,BYTE_BIT 429 por xmm1,xmm0 ; xmm1=Out0L=( 0 1 2 ... 13 14 15) 430 por xmm5,xmm2 ; xmm5=Out0H=(16 17 18 ... 29 30 31) 431 432 movdqa XMMWORD [edx+0*SIZEOF_XMMWORD], xmm1 433 movdqa XMMWORD [edx+1*SIZEOF_XMMWORD], xmm5 434 435 ; -- process the lower row 436 437 movdqa xmm6, XMMWORD [edi+0*SIZEOF_XMMWORD] 438 movdqa xmm4, XMMWORD [edi+1*SIZEOF_XMMWORD] 439 440 movdqa xmm7,xmm6 ; xmm6=Int1L=( 0 1 2 3 4 5 6 7) 441 movdqa xmm3,xmm4 ; xmm4=Int1H=( 8 9 10 11 12 13 14 15) 442 psrldq xmm7,2 ; xmm7=( 1 2 3 4 5 6 7 --) 443 pslldq xmm3,(SIZEOF_XMMWORD-2) ; xmm3=(-- -- -- -- -- -- -- 8) 444 movdqa xmm0,xmm6 445 movdqa xmm2,xmm4 446 psrldq xmm0,(SIZEOF_XMMWORD-2) ; xmm0=( 7 -- -- -- -- -- -- --) 447 pslldq xmm2,2 ; xmm2=(-- 8 9 10 11 12 13 14) 448 449 por xmm7,xmm3 ; xmm7=( 1 2 3 4 5 6 7 8) 450 por xmm0,xmm2 ; xmm0=( 7 8 9 10 11 12 13 14) 451 452 movdqa xmm1,xmm6 453 movdqa xmm5,xmm4 454 pslldq xmm1,2 ; xmm1=(-- 0 1 2 3 4 5 6) 455 psrldq xmm5,2 ; xmm5=( 9 10 11 12 13 14 15 --) 456 movdqa xmm3,xmm4 457 psrldq xmm3,(SIZEOF_XMMWORD-2) ; xmm3=(15 -- -- -- -- -- -- --) 458 459 por xmm1, XMMWORD [wk(1)] ; xmm1=(-1 0 1 2 3 4 5 6) 460 por xmm5, XMMWORD [wk(3)] ; xmm5=( 9 10 11 12 13 14 15 16) 461 462 movdqa XMMWORD [wk(1)], xmm3 463 464 pmullw xmm6,[GOTOFF(ebx,PW_THREE)] 465 pmullw xmm4,[GOTOFF(ebx,PW_THREE)] 466 paddw xmm1,[GOTOFF(ebx,PW_EIGHT)] 467 paddw xmm0,[GOTOFF(ebx,PW_EIGHT)] 468 paddw xmm7,[GOTOFF(ebx,PW_SEVEN)] 469 paddw xmm5,[GOTOFF(ebx,PW_SEVEN)] 470 471 paddw xmm1,xmm6 472 paddw xmm0,xmm4 473 psrlw xmm1,4 ; xmm1=Out1LE=( 0 2 4 6 8 10 12 14) 474 psrlw xmm0,4 ; xmm0=Out1HE=(16 18 20 22 24 26 28 30) 475 paddw xmm7,xmm6 476 paddw xmm5,xmm4 477 psrlw xmm7,4 ; xmm7=Out1LO=( 1 3 5 7 9 11 13 15) 478 psrlw xmm5,4 ; xmm5=Out1HO=(17 19 21 23 25 27 29 31) 479 480 psllw xmm7,BYTE_BIT 481 psllw xmm5,BYTE_BIT 482 por xmm1,xmm7 ; xmm1=Out1L=( 0 1 2 ... 13 14 15) 483 por xmm0,xmm5 ; xmm0=Out1H=(16 17 18 ... 29 30 31) 484 485 movdqa XMMWORD [edi+0*SIZEOF_XMMWORD], xmm1 486 movdqa XMMWORD [edi+1*SIZEOF_XMMWORD], xmm0 487 488 poppic ebx 489 490 sub eax, byte SIZEOF_XMMWORD 491 add ecx, byte 1*SIZEOF_XMMWORD ; inptr1(above) 492 add ebx, byte 1*SIZEOF_XMMWORD ; inptr0 493 add esi, byte 1*SIZEOF_XMMWORD ; inptr1(below) 494 add edx, byte 2*SIZEOF_XMMWORD ; outptr0 495 add edi, byte 2*SIZEOF_XMMWORD ; outptr1 496 cmp eax, byte SIZEOF_XMMWORD 497 ja near .columnloop 498 test eax,eax 499 jnz near .columnloop_last 500 501 pop esi 502 pop edi 503 pop ecx 504 pop eax 505 506 add esi, byte 1*SIZEOF_JSAMPROW ; input_data 507 add edi, byte 2*SIZEOF_JSAMPROW ; output_data 508 sub ecx, byte 2 ; rowctr 509 jg near .rowloop 510 511 .return: 512 pop edi 513 pop esi 514 ; pop edx ; need not be preserved 515 ; pop ecx ; need not be preserved 516 pop ebx 517 mov esp,ebp ; esp <- aligned ebp 518 pop esp ; esp <- original ebp 519 pop ebp 520 ret 521 522 ; -------------------------------------------------------------------------- 523 ; 524 ; Fast processing for the common case of 2:1 horizontal and 1:1 vertical. 525 ; It's still a box filter. 526 ; 527 ; GLOBAL(void) 528 ; jsimd_h2v1_upsample_sse2 (int max_v_samp_factor, 529 ; JDIMENSION output_width, 530 ; JSAMPARRAY input_data, 531 ; JSAMPARRAY *output_data_ptr); 532 ; 533 534 %define max_v_samp(b) (b)+8 ; int max_v_samp_factor 535 %define output_width(b) (b)+12 ; JDIMENSION output_width 536 %define input_data(b) (b)+16 ; JSAMPARRAY input_data 537 %define output_data_ptr(b) (b)+20 ; JSAMPARRAY *output_data_ptr 538 539 align 16 540 global EXTN(jsimd_h2v1_upsample_sse2) 541 542 EXTN(jsimd_h2v1_upsample_sse2): 543 push ebp 544 mov ebp,esp 545 ; push ebx ; unused 546 ; push ecx ; need not be preserved 547 ; push edx ; need not be preserved 548 push esi 549 push edi 550 551 mov edx, JDIMENSION [output_width(ebp)] 552 add edx, byte (2*SIZEOF_XMMWORD)-1 553 and edx, byte -(2*SIZEOF_XMMWORD) 554 jz short .return 555 556 mov ecx, INT [max_v_samp(ebp)] ; rowctr 557 test ecx,ecx 558 jz short .return 559 560 mov esi, JSAMPARRAY [input_data(ebp)] ; input_data 561 mov edi, POINTER [output_data_ptr(ebp)] 562 mov edi, JSAMPARRAY [edi] ; output_data 563 alignx 16,7 564 .rowloop: 565 push edi 566 push esi 567 568 mov esi, JSAMPROW [esi] ; inptr 569 mov edi, JSAMPROW [edi] ; outptr 570 mov eax,edx ; colctr 571 alignx 16,7 572 .columnloop: 573 574 movdqa xmm0, XMMWORD [esi+0*SIZEOF_XMMWORD] 575 576 movdqa xmm1,xmm0 577 punpcklbw xmm0,xmm0 578 punpckhbw xmm1,xmm1 579 580 movdqa XMMWORD [edi+0*SIZEOF_XMMWORD], xmm0 581 movdqa XMMWORD [edi+1*SIZEOF_XMMWORD], xmm1 582 583 sub eax, byte 2*SIZEOF_XMMWORD 584 jz short .nextrow 585 586 movdqa xmm2, XMMWORD [esi+1*SIZEOF_XMMWORD] 587 588 movdqa xmm3,xmm2 589 punpcklbw xmm2,xmm2 590 punpckhbw xmm3,xmm3 591 592 movdqa XMMWORD [edi+2*SIZEOF_XMMWORD], xmm2 593 movdqa XMMWORD [edi+3*SIZEOF_XMMWORD], xmm3 594 595 sub eax, byte 2*SIZEOF_XMMWORD 596 jz short .nextrow 597 598 add esi, byte 2*SIZEOF_XMMWORD ; inptr 599 add edi, byte 4*SIZEOF_XMMWORD ; outptr 600 jmp short .columnloop 601 alignx 16,7 602 603 .nextrow: 604 pop esi 605 pop edi 606 607 add esi, byte SIZEOF_JSAMPROW ; input_data 608 add edi, byte SIZEOF_JSAMPROW ; output_data 609 dec ecx ; rowctr 610 jg short .rowloop 611 612 .return: 613 pop edi 614 pop esi 615 ; pop edx ; need not be preserved 616 ; pop ecx ; need not be preserved 617 ; pop ebx ; unused 618 pop ebp 619 ret 620 621 ; -------------------------------------------------------------------------- 622 ; 623 ; Fast processing for the common case of 2:1 horizontal and 2:1 vertical. 624 ; It's still a box filter. 625 ; 626 ; GLOBAL(void) 627 ; jsimd_h2v2_upsample_sse2 (nt max_v_samp_factor, 628 ; JDIMENSION output_width, 629 ; JSAMPARRAY input_data, 630 ; JSAMPARRAY *output_data_ptr); 631 ; 632 633 %define max_v_samp(b) (b)+8 ; int max_v_samp_factor 634 %define output_width(b) (b)+12 ; JDIMENSION output_width 635 %define input_data(b) (b)+16 ; JSAMPARRAY input_data 636 %define output_data_ptr(b) (b)+20 ; JSAMPARRAY *output_data_ptr 637 638 align 16 639 global EXTN(jsimd_h2v2_upsample_sse2) 640 641 EXTN(jsimd_h2v2_upsample_sse2): 642 push ebp 643 mov ebp,esp 644 push ebx 645 ; push ecx ; need not be preserved 646 ; push edx ; need not be preserved 647 push esi 648 push edi 649 650 mov edx, JDIMENSION [output_width(ebp)] 651 add edx, byte (2*SIZEOF_XMMWORD)-1 652 and edx, byte -(2*SIZEOF_XMMWORD) 653 jz near .return 654 655 mov ecx, INT [max_v_samp(ebp)] ; rowctr 656 test ecx,ecx 657 jz near .return 658 659 mov esi, JSAMPARRAY [input_data(ebp)] ; input_data 660 mov edi, POINTER [output_data_ptr(ebp)] 661 mov edi, JSAMPARRAY [edi] ; output_data 662 alignx 16,7 663 .rowloop: 664 push edi 665 push esi 666 667 mov esi, JSAMPROW [esi] ; inptr 668 mov ebx, JSAMPROW [edi+0*SIZEOF_JSAMPROW] ; outptr0 669 mov edi, JSAMPROW [edi+1*SIZEOF_JSAMPROW] ; outptr1 670 mov eax,edx ; colctr 671 alignx 16,7 672 .columnloop: 673 674 movdqa xmm0, XMMWORD [esi+0*SIZEOF_XMMWORD] 675 676 movdqa xmm1,xmm0 677 punpcklbw xmm0,xmm0 678 punpckhbw xmm1,xmm1 679 680 movdqa XMMWORD [ebx+0*SIZEOF_XMMWORD], xmm0 681 movdqa XMMWORD [ebx+1*SIZEOF_XMMWORD], xmm1 682 movdqa XMMWORD [edi+0*SIZEOF_XMMWORD], xmm0 683 movdqa XMMWORD [edi+1*SIZEOF_XMMWORD], xmm1 684 685 sub eax, byte 2*SIZEOF_XMMWORD 686 jz short .nextrow 687 688 movdqa xmm2, XMMWORD [esi+1*SIZEOF_XMMWORD] 689 690 movdqa xmm3,xmm2 691 punpcklbw xmm2,xmm2 692 punpckhbw xmm3,xmm3 693 694 movdqa XMMWORD [ebx+2*SIZEOF_XMMWORD], xmm2 695 movdqa XMMWORD [ebx+3*SIZEOF_XMMWORD], xmm3 696 movdqa XMMWORD [edi+2*SIZEOF_XMMWORD], xmm2 697 movdqa XMMWORD [edi+3*SIZEOF_XMMWORD], xmm3 698 699 sub eax, byte 2*SIZEOF_XMMWORD 700 jz short .nextrow 701 702 add esi, byte 2*SIZEOF_XMMWORD ; inptr 703 add ebx, byte 4*SIZEOF_XMMWORD ; outptr0 704 add edi, byte 4*SIZEOF_XMMWORD ; outptr1 705 jmp short .columnloop 706 alignx 16,7 707 708 .nextrow: 709 pop esi 710 pop edi 711 712 add esi, byte 1*SIZEOF_JSAMPROW ; input_data 713 add edi, byte 2*SIZEOF_JSAMPROW ; output_data 714 sub ecx, byte 2 ; rowctr 715 jg short .rowloop 716 717 .return: 718 pop edi 719 pop esi 720 ; pop edx ; need not be preserved 721 ; pop ecx ; need not be preserved 722 pop ebx 723 pop ebp 724 ret 725 726 ; For some reason, the OS X linker does not honor the request to align the 727 ; segment unless we do this. 728 align 16 729
