1 ; 2 ; jdsample.asm - upsampling (64-bit SSE2) 3 ; 4 ; Copyright 2009 Pierre Ossman <ossman (a] cendio.se> for Cendio AB 5 ; Copyright (C) 2009, D. R. Commander. 6 ; 7 ; Based on the 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 ; [TAB8] 18 19 %include "jsimdext.inc" 20 21 ; -------------------------------------------------------------------------- 22 SECTION SEG_CONST 23 24 alignz 16 25 global EXTN(jconst_fancy_upsample_sse2) 26 27 EXTN(jconst_fancy_upsample_sse2): 28 29 PW_ONE times 8 dw 1 30 PW_TWO times 8 dw 2 31 PW_THREE times 8 dw 3 32 PW_SEVEN times 8 dw 7 33 PW_EIGHT times 8 dw 8 34 35 alignz 16 36 37 ; -------------------------------------------------------------------------- 38 SECTION SEG_TEXT 39 BITS 64 40 ; 41 ; Fancy processing for the common case of 2:1 horizontal and 1:1 vertical. 42 ; 43 ; The upsampling algorithm is linear interpolation between pixel centers, 44 ; also known as a "triangle filter". This is a good compromise between 45 ; speed and visual quality. The centers of the output pixels are 1/4 and 3/4 46 ; of the way between input pixel centers. 47 ; 48 ; GLOBAL(void) 49 ; jsimd_h2v1_fancy_upsample_sse2 (int max_v_samp_factor, 50 ; JDIMENSION downsampled_width, 51 ; JSAMPARRAY input_data, 52 ; JSAMPARRAY *output_data_ptr); 53 ; 54 55 ; r10 = int max_v_samp_factor 56 ; r11 = JDIMENSION downsampled_width 57 ; r12 = JSAMPARRAY input_data 58 ; r13 = JSAMPARRAY *output_data_ptr 59 60 align 16 61 global EXTN(jsimd_h2v1_fancy_upsample_sse2) 62 63 EXTN(jsimd_h2v1_fancy_upsample_sse2): 64 push rbp 65 mov rax,rsp 66 mov rbp,rsp 67 collect_args 68 69 mov eax, r11d ; colctr 70 test rax,rax 71 jz near .return 72 73 mov rcx, r10 ; rowctr 74 test rcx,rcx 75 jz near .return 76 77 mov rsi, r12 ; input_data 78 mov rdi, r13 79 mov rdi, JSAMPARRAY [rdi] ; output_data 80 .rowloop: 81 push rax ; colctr 82 push rdi 83 push rsi 84 85 mov rsi, JSAMPROW [rsi] ; inptr 86 mov rdi, JSAMPROW [rdi] ; outptr 87 88 test rax, SIZEOF_XMMWORD-1 89 jz short .skip 90 mov dl, JSAMPLE [rsi+(rax-1)*SIZEOF_JSAMPLE] 91 mov JSAMPLE [rsi+rax*SIZEOF_JSAMPLE], dl ; insert a dummy sample 92 .skip: 93 pxor xmm0,xmm0 ; xmm0=(all 0's) 94 pcmpeqb xmm7,xmm7 95 psrldq xmm7,(SIZEOF_XMMWORD-1) 96 pand xmm7, XMMWORD [rsi+0*SIZEOF_XMMWORD] 97 98 add rax, byte SIZEOF_XMMWORD-1 99 and rax, byte -SIZEOF_XMMWORD 100 cmp rax, byte SIZEOF_XMMWORD 101 ja short .columnloop 102 103 .columnloop_last: 104 pcmpeqb xmm6,xmm6 105 pslldq xmm6,(SIZEOF_XMMWORD-1) 106 pand xmm6, XMMWORD [rsi+0*SIZEOF_XMMWORD] 107 jmp short .upsample 108 109 .columnloop: 110 movdqa xmm6, XMMWORD [rsi+1*SIZEOF_XMMWORD] 111 pslldq xmm6,(SIZEOF_XMMWORD-1) 112 113 .upsample: 114 movdqa xmm1, XMMWORD [rsi+0*SIZEOF_XMMWORD] 115 movdqa xmm2,xmm1 116 movdqa xmm3,xmm1 ; xmm1=( 0 1 2 ... 13 14 15) 117 pslldq xmm2,1 ; xmm2=(-- 0 1 ... 12 13 14) 118 psrldq xmm3,1 ; xmm3=( 1 2 3 ... 14 15 --) 119 120 por xmm2,xmm7 ; xmm2=(-1 0 1 ... 12 13 14) 121 por xmm3,xmm6 ; xmm3=( 1 2 3 ... 14 15 16) 122 123 movdqa xmm7,xmm1 124 psrldq xmm7,(SIZEOF_XMMWORD-1) ; xmm7=(15 -- -- ... -- -- --) 125 126 movdqa xmm4,xmm1 127 punpcklbw xmm1,xmm0 ; xmm1=( 0 1 2 3 4 5 6 7) 128 punpckhbw xmm4,xmm0 ; xmm4=( 8 9 10 11 12 13 14 15) 129 movdqa xmm5,xmm2 130 punpcklbw xmm2,xmm0 ; xmm2=(-1 0 1 2 3 4 5 6) 131 punpckhbw xmm5,xmm0 ; xmm5=( 7 8 9 10 11 12 13 14) 132 movdqa xmm6,xmm3 133 punpcklbw xmm3,xmm0 ; xmm3=( 1 2 3 4 5 6 7 8) 134 punpckhbw xmm6,xmm0 ; xmm6=( 9 10 11 12 13 14 15 16) 135 136 pmullw xmm1,[rel PW_THREE] 137 pmullw xmm4,[rel PW_THREE] 138 paddw xmm2,[rel PW_ONE] 139 paddw xmm5,[rel PW_ONE] 140 paddw xmm3,[rel PW_TWO] 141 paddw xmm6,[rel PW_TWO] 142 143 paddw xmm2,xmm1 144 paddw xmm5,xmm4 145 psrlw xmm2,2 ; xmm2=OutLE=( 0 2 4 6 8 10 12 14) 146 psrlw xmm5,2 ; xmm5=OutHE=(16 18 20 22 24 26 28 30) 147 paddw xmm3,xmm1 148 paddw xmm6,xmm4 149 psrlw xmm3,2 ; xmm3=OutLO=( 1 3 5 7 9 11 13 15) 150 psrlw xmm6,2 ; xmm6=OutHO=(17 19 21 23 25 27 29 31) 151 152 psllw xmm3,BYTE_BIT 153 psllw xmm6,BYTE_BIT 154 por xmm2,xmm3 ; xmm2=OutL=( 0 1 2 ... 13 14 15) 155 por xmm5,xmm6 ; xmm5=OutH=(16 17 18 ... 29 30 31) 156 157 movdqa XMMWORD [rdi+0*SIZEOF_XMMWORD], xmm2 158 movdqa XMMWORD [rdi+1*SIZEOF_XMMWORD], xmm5 159 160 sub rax, byte SIZEOF_XMMWORD 161 add rsi, byte 1*SIZEOF_XMMWORD ; inptr 162 add rdi, byte 2*SIZEOF_XMMWORD ; outptr 163 cmp rax, byte SIZEOF_XMMWORD 164 ja near .columnloop 165 test eax,eax 166 jnz near .columnloop_last 167 168 pop rsi 169 pop rdi 170 pop rax 171 172 add rsi, byte SIZEOF_JSAMPROW ; input_data 173 add rdi, byte SIZEOF_JSAMPROW ; output_data 174 dec rcx ; rowctr 175 jg near .rowloop 176 177 .return: 178 uncollect_args 179 pop rbp 180 ret 181 182 ; -------------------------------------------------------------------------- 183 ; 184 ; Fancy processing for the common case of 2:1 horizontal and 2:1 vertical. 185 ; Again a triangle filter; see comments for h2v1 case, above. 186 ; 187 ; GLOBAL(void) 188 ; jsimd_h2v2_fancy_upsample_sse2 (int max_v_samp_factor, 189 ; JDIMENSION downsampled_width, 190 ; JSAMPARRAY input_data, 191 ; JSAMPARRAY *output_data_ptr); 192 ; 193 194 ; r10 = int max_v_samp_factor 195 ; r11 = JDIMENSION downsampled_width 196 ; r12 = JSAMPARRAY input_data 197 ; r13 = JSAMPARRAY *output_data_ptr 198 199 %define wk(i) rbp-(WK_NUM-(i))*SIZEOF_XMMWORD ; xmmword wk[WK_NUM] 200 %define WK_NUM 4 201 202 align 16 203 global EXTN(jsimd_h2v2_fancy_upsample_sse2) 204 205 EXTN(jsimd_h2v2_fancy_upsample_sse2): 206 push rbp 207 mov rax,rsp ; rax = original rbp 208 sub rsp, byte 4 209 and rsp, byte (-SIZEOF_XMMWORD) ; align to 128 bits 210 mov [rsp],rax 211 mov rbp,rsp ; rbp = aligned rbp 212 lea rsp, [wk(0)] 213 collect_args 214 push rbx 215 216 mov eax, r11d ; colctr 217 test rax,rax 218 jz near .return 219 220 mov rcx, r10 ; rowctr 221 test rcx,rcx 222 jz near .return 223 224 mov rsi, r12 ; input_data 225 mov rdi, r13 226 mov rdi, JSAMPARRAY [rdi] ; output_data 227 .rowloop: 228 push rax ; colctr 229 push rcx 230 push rdi 231 push rsi 232 233 mov rcx, JSAMPROW [rsi-1*SIZEOF_JSAMPROW] ; inptr1(above) 234 mov rbx, JSAMPROW [rsi+0*SIZEOF_JSAMPROW] ; inptr0 235 mov rsi, JSAMPROW [rsi+1*SIZEOF_JSAMPROW] ; inptr1(below) 236 mov rdx, JSAMPROW [rdi+0*SIZEOF_JSAMPROW] ; outptr0 237 mov rdi, JSAMPROW [rdi+1*SIZEOF_JSAMPROW] ; outptr1 238 239 test rax, SIZEOF_XMMWORD-1 240 jz short .skip 241 push rdx 242 mov dl, JSAMPLE [rcx+(rax-1)*SIZEOF_JSAMPLE] 243 mov JSAMPLE [rcx+rax*SIZEOF_JSAMPLE], dl 244 mov dl, JSAMPLE [rbx+(rax-1)*SIZEOF_JSAMPLE] 245 mov JSAMPLE [rbx+rax*SIZEOF_JSAMPLE], dl 246 mov dl, JSAMPLE [rsi+(rax-1)*SIZEOF_JSAMPLE] 247 mov JSAMPLE [rsi+rax*SIZEOF_JSAMPLE], dl ; insert a dummy sample 248 pop rdx 249 .skip: 250 ; -- process the first column block 251 252 movdqa xmm0, XMMWORD [rbx+0*SIZEOF_XMMWORD] ; xmm0=row[ 0][0] 253 movdqa xmm1, XMMWORD [rcx+0*SIZEOF_XMMWORD] ; xmm1=row[-1][0] 254 movdqa xmm2, XMMWORD [rsi+0*SIZEOF_XMMWORD] ; xmm2=row[+1][0] 255 256 pxor xmm3,xmm3 ; xmm3=(all 0's) 257 movdqa xmm4,xmm0 258 punpcklbw xmm0,xmm3 ; xmm0=row[ 0]( 0 1 2 3 4 5 6 7) 259 punpckhbw xmm4,xmm3 ; xmm4=row[ 0]( 8 9 10 11 12 13 14 15) 260 movdqa xmm5,xmm1 261 punpcklbw xmm1,xmm3 ; xmm1=row[-1]( 0 1 2 3 4 5 6 7) 262 punpckhbw xmm5,xmm3 ; xmm5=row[-1]( 8 9 10 11 12 13 14 15) 263 movdqa xmm6,xmm2 264 punpcklbw xmm2,xmm3 ; xmm2=row[+1]( 0 1 2 3 4 5 6 7) 265 punpckhbw xmm6,xmm3 ; xmm6=row[+1]( 8 9 10 11 12 13 14 15) 266 267 pmullw xmm0,[rel PW_THREE] 268 pmullw xmm4,[rel PW_THREE] 269 270 pcmpeqb xmm7,xmm7 271 psrldq xmm7,(SIZEOF_XMMWORD-2) 272 273 paddw xmm1,xmm0 ; xmm1=Int0L=( 0 1 2 3 4 5 6 7) 274 paddw xmm5,xmm4 ; xmm5=Int0H=( 8 9 10 11 12 13 14 15) 275 paddw xmm2,xmm0 ; xmm2=Int1L=( 0 1 2 3 4 5 6 7) 276 paddw xmm6,xmm4 ; xmm6=Int1H=( 8 9 10 11 12 13 14 15) 277 278 movdqa XMMWORD [rdx+0*SIZEOF_XMMWORD], xmm1 ; temporarily save 279 movdqa XMMWORD [rdx+1*SIZEOF_XMMWORD], xmm5 ; the intermediate data 280 movdqa XMMWORD [rdi+0*SIZEOF_XMMWORD], xmm2 281 movdqa XMMWORD [rdi+1*SIZEOF_XMMWORD], xmm6 282 283 pand xmm1,xmm7 ; xmm1=( 0 -- -- -- -- -- -- --) 284 pand xmm2,xmm7 ; xmm2=( 0 -- -- -- -- -- -- --) 285 286 movdqa XMMWORD [wk(0)], xmm1 287 movdqa XMMWORD [wk(1)], xmm2 288 289 add rax, byte SIZEOF_XMMWORD-1 290 and rax, byte -SIZEOF_XMMWORD 291 cmp rax, byte SIZEOF_XMMWORD 292 ja short .columnloop 293 294 .columnloop_last: 295 ; -- process the last column block 296 297 pcmpeqb xmm1,xmm1 298 pslldq xmm1,(SIZEOF_XMMWORD-2) 299 movdqa xmm2,xmm1 300 301 pand xmm1, XMMWORD [rdx+1*SIZEOF_XMMWORD] 302 pand xmm2, XMMWORD [rdi+1*SIZEOF_XMMWORD] 303 304 movdqa XMMWORD [wk(2)], xmm1 ; xmm1=(-- -- -- -- -- -- -- 15) 305 movdqa XMMWORD [wk(3)], xmm2 ; xmm2=(-- -- -- -- -- -- -- 15) 306 307 jmp near .upsample 308 309 .columnloop: 310 ; -- process the next column block 311 312 movdqa xmm0, XMMWORD [rbx+1*SIZEOF_XMMWORD] ; xmm0=row[ 0][1] 313 movdqa xmm1, XMMWORD [rcx+1*SIZEOF_XMMWORD] ; xmm1=row[-1][1] 314 movdqa xmm2, XMMWORD [rsi+1*SIZEOF_XMMWORD] ; xmm2=row[+1][1] 315 316 pxor xmm3,xmm3 ; xmm3=(all 0's) 317 movdqa xmm4,xmm0 318 punpcklbw xmm0,xmm3 ; xmm0=row[ 0]( 0 1 2 3 4 5 6 7) 319 punpckhbw xmm4,xmm3 ; xmm4=row[ 0]( 8 9 10 11 12 13 14 15) 320 movdqa xmm5,xmm1 321 punpcklbw xmm1,xmm3 ; xmm1=row[-1]( 0 1 2 3 4 5 6 7) 322 punpckhbw xmm5,xmm3 ; xmm5=row[-1]( 8 9 10 11 12 13 14 15) 323 movdqa xmm6,xmm2 324 punpcklbw xmm2,xmm3 ; xmm2=row[+1]( 0 1 2 3 4 5 6 7) 325 punpckhbw xmm6,xmm3 ; xmm6=row[+1]( 8 9 10 11 12 13 14 15) 326 327 pmullw xmm0,[rel PW_THREE] 328 pmullw xmm4,[rel PW_THREE] 329 330 paddw xmm1,xmm0 ; xmm1=Int0L=( 0 1 2 3 4 5 6 7) 331 paddw xmm5,xmm4 ; xmm5=Int0H=( 8 9 10 11 12 13 14 15) 332 paddw xmm2,xmm0 ; xmm2=Int1L=( 0 1 2 3 4 5 6 7) 333 paddw xmm6,xmm4 ; xmm6=Int1H=( 8 9 10 11 12 13 14 15) 334 335 movdqa XMMWORD [rdx+2*SIZEOF_XMMWORD], xmm1 ; temporarily save 336 movdqa XMMWORD [rdx+3*SIZEOF_XMMWORD], xmm5 ; the intermediate data 337 movdqa XMMWORD [rdi+2*SIZEOF_XMMWORD], xmm2 338 movdqa XMMWORD [rdi+3*SIZEOF_XMMWORD], xmm6 339 340 pslldq xmm1,(SIZEOF_XMMWORD-2) ; xmm1=(-- -- -- -- -- -- -- 0) 341 pslldq xmm2,(SIZEOF_XMMWORD-2) ; xmm2=(-- -- -- -- -- -- -- 0) 342 343 movdqa XMMWORD [wk(2)], xmm1 344 movdqa XMMWORD [wk(3)], xmm2 345 346 .upsample: 347 ; -- process the upper row 348 349 movdqa xmm7, XMMWORD [rdx+0*SIZEOF_XMMWORD] 350 movdqa xmm3, XMMWORD [rdx+1*SIZEOF_XMMWORD] 351 352 movdqa xmm0,xmm7 ; xmm7=Int0L=( 0 1 2 3 4 5 6 7) 353 movdqa xmm4,xmm3 ; xmm3=Int0H=( 8 9 10 11 12 13 14 15) 354 psrldq xmm0,2 ; xmm0=( 1 2 3 4 5 6 7 --) 355 pslldq xmm4,(SIZEOF_XMMWORD-2) ; xmm4=(-- -- -- -- -- -- -- 8) 356 movdqa xmm5,xmm7 357 movdqa xmm6,xmm3 358 psrldq xmm5,(SIZEOF_XMMWORD-2) ; xmm5=( 7 -- -- -- -- -- -- --) 359 pslldq xmm6,2 ; xmm6=(-- 8 9 10 11 12 13 14) 360 361 por xmm0,xmm4 ; xmm0=( 1 2 3 4 5 6 7 8) 362 por xmm5,xmm6 ; xmm5=( 7 8 9 10 11 12 13 14) 363 364 movdqa xmm1,xmm7 365 movdqa xmm2,xmm3 366 pslldq xmm1,2 ; xmm1=(-- 0 1 2 3 4 5 6) 367 psrldq xmm2,2 ; xmm2=( 9 10 11 12 13 14 15 --) 368 movdqa xmm4,xmm3 369 psrldq xmm4,(SIZEOF_XMMWORD-2) ; xmm4=(15 -- -- -- -- -- -- --) 370 371 por xmm1, XMMWORD [wk(0)] ; xmm1=(-1 0 1 2 3 4 5 6) 372 por xmm2, XMMWORD [wk(2)] ; xmm2=( 9 10 11 12 13 14 15 16) 373 374 movdqa XMMWORD [wk(0)], xmm4 375 376 pmullw xmm7,[rel PW_THREE] 377 pmullw xmm3,[rel PW_THREE] 378 paddw xmm1,[rel PW_EIGHT] 379 paddw xmm5,[rel PW_EIGHT] 380 paddw xmm0,[rel PW_SEVEN] 381 paddw xmm2,[rel PW_SEVEN] 382 383 paddw xmm1,xmm7 384 paddw xmm5,xmm3 385 psrlw xmm1,4 ; xmm1=Out0LE=( 0 2 4 6 8 10 12 14) 386 psrlw xmm5,4 ; xmm5=Out0HE=(16 18 20 22 24 26 28 30) 387 paddw xmm0,xmm7 388 paddw xmm2,xmm3 389 psrlw xmm0,4 ; xmm0=Out0LO=( 1 3 5 7 9 11 13 15) 390 psrlw xmm2,4 ; xmm2=Out0HO=(17 19 21 23 25 27 29 31) 391 392 psllw xmm0,BYTE_BIT 393 psllw xmm2,BYTE_BIT 394 por xmm1,xmm0 ; xmm1=Out0L=( 0 1 2 ... 13 14 15) 395 por xmm5,xmm2 ; xmm5=Out0H=(16 17 18 ... 29 30 31) 396 397 movdqa XMMWORD [rdx+0*SIZEOF_XMMWORD], xmm1 398 movdqa XMMWORD [rdx+1*SIZEOF_XMMWORD], xmm5 399 400 ; -- process the lower row 401 402 movdqa xmm6, XMMWORD [rdi+0*SIZEOF_XMMWORD] 403 movdqa xmm4, XMMWORD [rdi+1*SIZEOF_XMMWORD] 404 405 movdqa xmm7,xmm6 ; xmm6=Int1L=( 0 1 2 3 4 5 6 7) 406 movdqa xmm3,xmm4 ; xmm4=Int1H=( 8 9 10 11 12 13 14 15) 407 psrldq xmm7,2 ; xmm7=( 1 2 3 4 5 6 7 --) 408 pslldq xmm3,(SIZEOF_XMMWORD-2) ; xmm3=(-- -- -- -- -- -- -- 8) 409 movdqa xmm0,xmm6 410 movdqa xmm2,xmm4 411 psrldq xmm0,(SIZEOF_XMMWORD-2) ; xmm0=( 7 -- -- -- -- -- -- --) 412 pslldq xmm2,2 ; xmm2=(-- 8 9 10 11 12 13 14) 413 414 por xmm7,xmm3 ; xmm7=( 1 2 3 4 5 6 7 8) 415 por xmm0,xmm2 ; xmm0=( 7 8 9 10 11 12 13 14) 416 417 movdqa xmm1,xmm6 418 movdqa xmm5,xmm4 419 pslldq xmm1,2 ; xmm1=(-- 0 1 2 3 4 5 6) 420 psrldq xmm5,2 ; xmm5=( 9 10 11 12 13 14 15 --) 421 movdqa xmm3,xmm4 422 psrldq xmm3,(SIZEOF_XMMWORD-2) ; xmm3=(15 -- -- -- -- -- -- --) 423 424 por xmm1, XMMWORD [wk(1)] ; xmm1=(-1 0 1 2 3 4 5 6) 425 por xmm5, XMMWORD [wk(3)] ; xmm5=( 9 10 11 12 13 14 15 16) 426 427 movdqa XMMWORD [wk(1)], xmm3 428 429 pmullw xmm6,[rel PW_THREE] 430 pmullw xmm4,[rel PW_THREE] 431 paddw xmm1,[rel PW_EIGHT] 432 paddw xmm0,[rel PW_EIGHT] 433 paddw xmm7,[rel PW_SEVEN] 434 paddw xmm5,[rel PW_SEVEN] 435 436 paddw xmm1,xmm6 437 paddw xmm0,xmm4 438 psrlw xmm1,4 ; xmm1=Out1LE=( 0 2 4 6 8 10 12 14) 439 psrlw xmm0,4 ; xmm0=Out1HE=(16 18 20 22 24 26 28 30) 440 paddw xmm7,xmm6 441 paddw xmm5,xmm4 442 psrlw xmm7,4 ; xmm7=Out1LO=( 1 3 5 7 9 11 13 15) 443 psrlw xmm5,4 ; xmm5=Out1HO=(17 19 21 23 25 27 29 31) 444 445 psllw xmm7,BYTE_BIT 446 psllw xmm5,BYTE_BIT 447 por xmm1,xmm7 ; xmm1=Out1L=( 0 1 2 ... 13 14 15) 448 por xmm0,xmm5 ; xmm0=Out1H=(16 17 18 ... 29 30 31) 449 450 movdqa XMMWORD [rdi+0*SIZEOF_XMMWORD], xmm1 451 movdqa XMMWORD [rdi+1*SIZEOF_XMMWORD], xmm0 452 453 sub rax, byte SIZEOF_XMMWORD 454 add rcx, byte 1*SIZEOF_XMMWORD ; inptr1(above) 455 add rbx, byte 1*SIZEOF_XMMWORD ; inptr0 456 add rsi, byte 1*SIZEOF_XMMWORD ; inptr1(below) 457 add rdx, byte 2*SIZEOF_XMMWORD ; outptr0 458 add rdi, byte 2*SIZEOF_XMMWORD ; outptr1 459 cmp rax, byte SIZEOF_XMMWORD 460 ja near .columnloop 461 test rax,rax 462 jnz near .columnloop_last 463 464 pop rsi 465 pop rdi 466 pop rcx 467 pop rax 468 469 add rsi, byte 1*SIZEOF_JSAMPROW ; input_data 470 add rdi, byte 2*SIZEOF_JSAMPROW ; output_data 471 sub rcx, byte 2 ; rowctr 472 jg near .rowloop 473 474 .return: 475 pop rbx 476 uncollect_args 477 mov rsp,rbp ; rsp <- aligned rbp 478 pop rsp ; rsp <- original rbp 479 pop rbp 480 ret 481 482 ; -------------------------------------------------------------------------- 483 ; 484 ; Fast processing for the common case of 2:1 horizontal and 1:1 vertical. 485 ; It's still a box filter. 486 ; 487 ; GLOBAL(void) 488 ; jsimd_h2v1_upsample_sse2 (int max_v_samp_factor, 489 ; JDIMENSION output_width, 490 ; JSAMPARRAY input_data, 491 ; JSAMPARRAY *output_data_ptr); 492 ; 493 494 ; r10 = int max_v_samp_factor 495 ; r11 = JDIMENSION output_width 496 ; r12 = JSAMPARRAY input_data 497 ; r13 = JSAMPARRAY *output_data_ptr 498 499 align 16 500 global EXTN(jsimd_h2v1_upsample_sse2) 501 502 EXTN(jsimd_h2v1_upsample_sse2): 503 push rbp 504 mov rax,rsp 505 mov rbp,rsp 506 collect_args 507 508 mov edx, r11d 509 add rdx, byte (2*SIZEOF_XMMWORD)-1 510 and rdx, byte -(2*SIZEOF_XMMWORD) 511 jz near .return 512 513 mov rcx, r10 ; rowctr 514 test rcx,rcx 515 jz short .return 516 517 mov rsi, r12 ; input_data 518 mov rdi, r13 519 mov rdi, JSAMPARRAY [rdi] ; output_data 520 .rowloop: 521 push rdi 522 push rsi 523 524 mov rsi, JSAMPROW [rsi] ; inptr 525 mov rdi, JSAMPROW [rdi] ; outptr 526 mov rax,rdx ; colctr 527 .columnloop: 528 529 movdqa xmm0, XMMWORD [rsi+0*SIZEOF_XMMWORD] 530 531 movdqa xmm1,xmm0 532 punpcklbw xmm0,xmm0 533 punpckhbw xmm1,xmm1 534 535 movdqa XMMWORD [rdi+0*SIZEOF_XMMWORD], xmm0 536 movdqa XMMWORD [rdi+1*SIZEOF_XMMWORD], xmm1 537 538 sub rax, byte 2*SIZEOF_XMMWORD 539 jz short .nextrow 540 541 movdqa xmm2, XMMWORD [rsi+1*SIZEOF_XMMWORD] 542 543 movdqa xmm3,xmm2 544 punpcklbw xmm2,xmm2 545 punpckhbw xmm3,xmm3 546 547 movdqa XMMWORD [rdi+2*SIZEOF_XMMWORD], xmm2 548 movdqa XMMWORD [rdi+3*SIZEOF_XMMWORD], xmm3 549 550 sub rax, byte 2*SIZEOF_XMMWORD 551 jz short .nextrow 552 553 add rsi, byte 2*SIZEOF_XMMWORD ; inptr 554 add rdi, byte 4*SIZEOF_XMMWORD ; outptr 555 jmp short .columnloop 556 557 .nextrow: 558 pop rsi 559 pop rdi 560 561 add rsi, byte SIZEOF_JSAMPROW ; input_data 562 add rdi, byte SIZEOF_JSAMPROW ; output_data 563 dec rcx ; rowctr 564 jg short .rowloop 565 566 .return: 567 uncollect_args 568 pop rbp 569 ret 570 571 ; -------------------------------------------------------------------------- 572 ; 573 ; Fast processing for the common case of 2:1 horizontal and 2:1 vertical. 574 ; It's still a box filter. 575 ; 576 ; GLOBAL(void) 577 ; jsimd_h2v2_upsample_sse2 (nt max_v_samp_factor, 578 ; JDIMENSION output_width, 579 ; JSAMPARRAY input_data, 580 ; JSAMPARRAY *output_data_ptr); 581 ; 582 583 ; r10 = int max_v_samp_factor 584 ; r11 = JDIMENSION output_width 585 ; r12 = JSAMPARRAY input_data 586 ; r13 = JSAMPARRAY *output_data_ptr 587 588 align 16 589 global EXTN(jsimd_h2v2_upsample_sse2) 590 591 EXTN(jsimd_h2v2_upsample_sse2): 592 push rbp 593 mov rax,rsp 594 mov rbp,rsp 595 collect_args 596 push rbx 597 598 mov edx, r11d 599 add rdx, byte (2*SIZEOF_XMMWORD)-1 600 and rdx, byte -(2*SIZEOF_XMMWORD) 601 jz near .return 602 603 mov rcx, r10 ; rowctr 604 test rcx,rcx 605 jz near .return 606 607 mov rsi, r12 ; input_data 608 mov rdi, r13 609 mov rdi, JSAMPARRAY [rdi] ; output_data 610 .rowloop: 611 push rdi 612 push rsi 613 614 mov rsi, JSAMPROW [rsi] ; inptr 615 mov rbx, JSAMPROW [rdi+0*SIZEOF_JSAMPROW] ; outptr0 616 mov rdi, JSAMPROW [rdi+1*SIZEOF_JSAMPROW] ; outptr1 617 mov rax,rdx ; colctr 618 .columnloop: 619 620 movdqa xmm0, XMMWORD [rsi+0*SIZEOF_XMMWORD] 621 622 movdqa xmm1,xmm0 623 punpcklbw xmm0,xmm0 624 punpckhbw xmm1,xmm1 625 626 movdqa XMMWORD [rbx+0*SIZEOF_XMMWORD], xmm0 627 movdqa XMMWORD [rbx+1*SIZEOF_XMMWORD], xmm1 628 movdqa XMMWORD [rdi+0*SIZEOF_XMMWORD], xmm0 629 movdqa XMMWORD [rdi+1*SIZEOF_XMMWORD], xmm1 630 631 sub rax, byte 2*SIZEOF_XMMWORD 632 jz short .nextrow 633 634 movdqa xmm2, XMMWORD [rsi+1*SIZEOF_XMMWORD] 635 636 movdqa xmm3,xmm2 637 punpcklbw xmm2,xmm2 638 punpckhbw xmm3,xmm3 639 640 movdqa XMMWORD [rbx+2*SIZEOF_XMMWORD], xmm2 641 movdqa XMMWORD [rbx+3*SIZEOF_XMMWORD], xmm3 642 movdqa XMMWORD [rdi+2*SIZEOF_XMMWORD], xmm2 643 movdqa XMMWORD [rdi+3*SIZEOF_XMMWORD], xmm3 644 645 sub rax, byte 2*SIZEOF_XMMWORD 646 jz short .nextrow 647 648 add rsi, byte 2*SIZEOF_XMMWORD ; inptr 649 add rbx, byte 4*SIZEOF_XMMWORD ; outptr0 650 add rdi, byte 4*SIZEOF_XMMWORD ; outptr1 651 jmp short .columnloop 652 653 .nextrow: 654 pop rsi 655 pop rdi 656 657 add rsi, byte 1*SIZEOF_JSAMPROW ; input_data 658 add rdi, byte 2*SIZEOF_JSAMPROW ; output_data 659 sub rcx, byte 2 ; rowctr 660 jg near .rowloop 661 662 .return: 663 pop rbx 664 uncollect_args 665 pop rbp 666 ret 667 668 ; For some reason, the OS X linker does not honor the request to align the 669 ; segment unless we do this. 670 align 16 671
