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comparison: media/libjpeg/simd/jimmxred.asm
media/libjpeg/simd/jimmxred.asm
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| 1 ; | |
| 2 ; jimmxred.asm - reduced-size IDCT (MMX) | |
| 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 inverse-DCT routines that produce reduced-size | |
| 18 ; output: either 4x4 or 2x2 pixels from an 8x8 DCT block. | |
| 19 ; The following code is based directly on the IJG's original jidctred.c; | |
| 20 ; see the jidctred.c for more details. | |
| 21 ; | |
| 22 ; [TAB8] | |
| 23 | |
| 24 %include "jsimdext.inc" | |
| 25 %include "jdct.inc" | |
| 26 | |
| 27 ; -------------------------------------------------------------------------- | |
| 28 | |
| 29 %define CONST_BITS 13 | |
| 30 %define PASS1_BITS 2 | |
| 31 | |
| 32 %define DESCALE_P1_4 (CONST_BITS-PASS1_BITS+1) | |
| 33 %define DESCALE_P2_4 (CONST_BITS+PASS1_BITS+3+1) | |
| 34 %define DESCALE_P1_2 (CONST_BITS-PASS1_BITS+2) | |
| 35 %define DESCALE_P2_2 (CONST_BITS+PASS1_BITS+3+2) | |
| 36 | |
| 37 %if CONST_BITS == 13 | |
| 38 F_0_211 equ 1730 ; FIX(0.211164243) | |
| 39 F_0_509 equ 4176 ; FIX(0.509795579) | |
| 40 F_0_601 equ 4926 ; FIX(0.601344887) | |
| 41 F_0_720 equ 5906 ; FIX(0.720959822) | |
| 42 F_0_765 equ 6270 ; FIX(0.765366865) | |
| 43 F_0_850 equ 6967 ; FIX(0.850430095) | |
| 44 F_0_899 equ 7373 ; FIX(0.899976223) | |
| 45 F_1_061 equ 8697 ; FIX(1.061594337) | |
| 46 F_1_272 equ 10426 ; FIX(1.272758580) | |
| 47 F_1_451 equ 11893 ; FIX(1.451774981) | |
| 48 F_1_847 equ 15137 ; FIX(1.847759065) | |
| 49 F_2_172 equ 17799 ; FIX(2.172734803) | |
| 50 F_2_562 equ 20995 ; FIX(2.562915447) | |
| 51 F_3_624 equ 29692 ; FIX(3.624509785) | |
| 52 %else | |
| 53 ; NASM cannot do compile-time arithmetic on floating-point constants. | |
| 54 %define DESCALE(x,n) (((x)+(1<<((n)-1)))>>(n)) | |
| 55 F_0_211 equ DESCALE( 226735879,30-CONST_BITS) ; FIX(0.211164243) | |
| 56 F_0_509 equ DESCALE( 547388834,30-CONST_BITS) ; FIX(0.509795579) | |
| 57 F_0_601 equ DESCALE( 645689155,30-CONST_BITS) ; FIX(0.601344887) | |
| 58 F_0_720 equ DESCALE( 774124714,30-CONST_BITS) ; FIX(0.720959822) | |
| 59 F_0_765 equ DESCALE( 821806413,30-CONST_BITS) ; FIX(0.765366865) | |
| 60 F_0_850 equ DESCALE( 913142361,30-CONST_BITS) ; FIX(0.850430095) | |
| 61 F_0_899 equ DESCALE( 966342111,30-CONST_BITS) ; FIX(0.899976223) | |
| 62 F_1_061 equ DESCALE(1139878239,30-CONST_BITS) ; FIX(1.061594337) | |
| 63 F_1_272 equ DESCALE(1366614119,30-CONST_BITS) ; FIX(1.272758580) | |
| 64 F_1_451 equ DESCALE(1558831516,30-CONST_BITS) ; FIX(1.451774981) | |
| 65 F_1_847 equ DESCALE(1984016188,30-CONST_BITS) ; FIX(1.847759065) | |
| 66 F_2_172 equ DESCALE(2332956230,30-CONST_BITS) ; FIX(2.172734803) | |
| 67 F_2_562 equ DESCALE(2751909506,30-CONST_BITS) ; FIX(2.562915447) | |
| 68 F_3_624 equ DESCALE(3891787747,30-CONST_BITS) ; FIX(3.624509785) | |
| 69 %endif | |
| 70 | |
| 71 ; -------------------------------------------------------------------------- | |
| 72 SECTION SEG_CONST | |
| 73 | |
| 74 alignz 16 | |
| 75 global EXTN(jconst_idct_red_mmx) | |
| 76 | |
| 77 EXTN(jconst_idct_red_mmx): | |
| 78 | |
| 79 PW_F184_MF076 times 2 dw F_1_847,-F_0_765 | |
| 80 PW_F256_F089 times 2 dw F_2_562, F_0_899 | |
| 81 PW_F106_MF217 times 2 dw F_1_061,-F_2_172 | |
| 82 PW_MF060_MF050 times 2 dw -F_0_601,-F_0_509 | |
| 83 PW_F145_MF021 times 2 dw F_1_451,-F_0_211 | |
| 84 PW_F362_MF127 times 2 dw F_3_624,-F_1_272 | |
| 85 PW_F085_MF072 times 2 dw F_0_850,-F_0_720 | |
| 86 PD_DESCALE_P1_4 times 2 dd 1 << (DESCALE_P1_4-1) | |
| 87 PD_DESCALE_P2_4 times 2 dd 1 << (DESCALE_P2_4-1) | |
| 88 PD_DESCALE_P1_2 times 2 dd 1 << (DESCALE_P1_2-1) | |
| 89 PD_DESCALE_P2_2 times 2 dd 1 << (DESCALE_P2_2-1) | |
| 90 PB_CENTERJSAMP times 8 db CENTERJSAMPLE | |
| 91 | |
| 92 alignz 16 | |
| 93 | |
| 94 ; -------------------------------------------------------------------------- | |
| 95 SECTION SEG_TEXT | |
| 96 BITS 32 | |
| 97 ; | |
| 98 ; Perform dequantization and inverse DCT on one block of coefficients, | |
| 99 ; producing a reduced-size 4x4 output block. | |
| 100 ; | |
| 101 ; GLOBAL(void) | |
| 102 ; jsimd_idct_4x4_mmx (void * dct_table, JCOEFPTR coef_block, | |
| 103 ; JSAMPARRAY output_buf, JDIMENSION output_col) | |
| 104 ; | |
| 105 | |
| 106 %define dct_table(b) (b)+8 ; void * dct_table | |
| 107 %define coef_block(b) (b)+12 ; JCOEFPTR coef_block | |
| 108 %define output_buf(b) (b)+16 ; JSAMPARRAY output_buf | |
| 109 %define output_col(b) (b)+20 ; JDIMENSION output_col | |
| 110 | |
| 111 %define original_ebp ebp+0 | |
| 112 %define wk(i) ebp-(WK_NUM-(i))*SIZEOF_MMWORD ; mmword wk[WK_NUM] | |
| 113 %define WK_NUM 2 | |
| 114 %define workspace wk(0)-DCTSIZE2*SIZEOF_JCOEF | |
| 115 ; JCOEF workspace[DCTSIZE2] | |
| 116 | |
| 117 align 16 | |
| 118 global EXTN(jsimd_idct_4x4_mmx) | |
| 119 | |
| 120 EXTN(jsimd_idct_4x4_mmx): | |
| 121 push ebp | |
| 122 mov eax,esp ; eax = original ebp | |
| 123 sub esp, byte 4 | |
| 124 and esp, byte (-SIZEOF_MMWORD) ; align to 64 bits | |
| 125 mov [esp],eax | |
| 126 mov ebp,esp ; ebp = aligned ebp | |
| 127 lea esp, [workspace] | |
| 128 pushpic ebx | |
| 129 ; push ecx ; need not be preserved | |
| 130 ; push edx ; need not be preserved | |
| 131 push esi | |
| 132 push edi | |
| 133 | |
| 134 get_GOT ebx ; get GOT address | |
| 135 | |
| 136 ; ---- Pass 1: process columns from input, store into work array. | |
| 137 | |
| 138 ; mov eax, [original_ebp] | |
| 139 mov edx, POINTER [dct_table(eax)] ; quantptr | |
| 140 mov esi, JCOEFPTR [coef_block(eax)] ; inptr | |
| 141 lea edi, [workspace] ; JCOEF * wsptr | |
| 142 mov ecx, DCTSIZE/4 ; ctr | |
| 143 alignx 16,7 | |
| 144 .columnloop: | |
| 145 %ifndef NO_ZERO_COLUMN_TEST_4X4_MMX | |
| 146 mov eax, DWORD [DWBLOCK(1,0,esi,SIZEOF_JCOEF)] | |
| 147 or eax, DWORD [DWBLOCK(2,0,esi,SIZEOF_JCOEF)] | |
| 148 jnz short .columnDCT | |
| 149 | |
| 150 movq mm0, MMWORD [MMBLOCK(1,0,esi,SIZEOF_JCOEF)] | |
| 151 movq mm1, MMWORD [MMBLOCK(2,0,esi,SIZEOF_JCOEF)] | |
| 152 por mm0, MMWORD [MMBLOCK(3,0,esi,SIZEOF_JCOEF)] | |
| 153 por mm1, MMWORD [MMBLOCK(5,0,esi,SIZEOF_JCOEF)] | |
| 154 por mm0, MMWORD [MMBLOCK(6,0,esi,SIZEOF_JCOEF)] | |
| 155 por mm1, MMWORD [MMBLOCK(7,0,esi,SIZEOF_JCOEF)] | |
| 156 por mm0,mm1 | |
| 157 packsswb mm0,mm0 | |
| 158 movd eax,mm0 | |
| 159 test eax,eax | |
| 160 jnz short .columnDCT | |
| 161 | |
| 162 ; -- AC terms all zero | |
| 163 | |
| 164 movq mm0, MMWORD [MMBLOCK(0,0,esi,SIZEOF_JCOEF)] | |
| 165 pmullw mm0, MMWORD [MMBLOCK(0,0,edx,SIZEOF_ISLOW_MULT_TYPE)] | |
| 166 | |
| 167 psllw mm0,PASS1_BITS | |
| 168 | |
| 169 movq mm2,mm0 ; mm0=in0=(00 01 02 03) | |
| 170 punpcklwd mm0,mm0 ; mm0=(00 00 01 01) | |
| 171 punpckhwd mm2,mm2 ; mm2=(02 02 03 03) | |
| 172 | |
| 173 movq mm1,mm0 | |
| 174 punpckldq mm0,mm0 ; mm0=(00 00 00 00) | |
| 175 punpckhdq mm1,mm1 ; mm1=(01 01 01 01) | |
| 176 movq mm3,mm2 | |
| 177 punpckldq mm2,mm2 ; mm2=(02 02 02 02) | |
| 178 punpckhdq mm3,mm3 ; mm3=(03 03 03 03) | |
| 179 | |
| 180 movq MMWORD [MMBLOCK(0,0,edi,SIZEOF_JCOEF)], mm0 | |
| 181 movq MMWORD [MMBLOCK(1,0,edi,SIZEOF_JCOEF)], mm1 | |
| 182 movq MMWORD [MMBLOCK(2,0,edi,SIZEOF_JCOEF)], mm2 | |
| 183 movq MMWORD [MMBLOCK(3,0,edi,SIZEOF_JCOEF)], mm3 | |
| 184 jmp near .nextcolumn | |
| 185 alignx 16,7 | |
| 186 %endif | |
| 187 .columnDCT: | |
| 188 | |
| 189 ; -- Odd part | |
| 190 | |
| 191 movq mm0, MMWORD [MMBLOCK(1,0,esi,SIZEOF_JCOEF)] | |
| 192 movq mm1, MMWORD [MMBLOCK(3,0,esi,SIZEOF_JCOEF)] | |
| 193 pmullw mm0, MMWORD [MMBLOCK(1,0,edx,SIZEOF_ISLOW_MULT_TYPE)] | |
| 194 pmullw mm1, MMWORD [MMBLOCK(3,0,edx,SIZEOF_ISLOW_MULT_TYPE)] | |
| 195 movq mm2, MMWORD [MMBLOCK(5,0,esi,SIZEOF_JCOEF)] | |
| 196 movq mm3, MMWORD [MMBLOCK(7,0,esi,SIZEOF_JCOEF)] | |
| 197 pmullw mm2, MMWORD [MMBLOCK(5,0,edx,SIZEOF_ISLOW_MULT_TYPE)] | |
| 198 pmullw mm3, MMWORD [MMBLOCK(7,0,edx,SIZEOF_ISLOW_MULT_TYPE)] | |
| 199 | |
| 200 movq mm4,mm0 | |
| 201 movq mm5,mm0 | |
| 202 punpcklwd mm4,mm1 | |
| 203 punpckhwd mm5,mm1 | |
| 204 movq mm0,mm4 | |
| 205 movq mm1,mm5 | |
| 206 pmaddwd mm4,[GOTOFF(ebx,PW_F256_F089)] ; mm4=(tmp2L) | |
| 207 pmaddwd mm5,[GOTOFF(ebx,PW_F256_F089)] ; mm5=(tmp2H) | |
| 208 pmaddwd mm0,[GOTOFF(ebx,PW_F106_MF217)] ; mm0=(tmp0L) | |
| 209 pmaddwd mm1,[GOTOFF(ebx,PW_F106_MF217)] ; mm1=(tmp0H) | |
| 210 | |
| 211 movq mm6,mm2 | |
| 212 movq mm7,mm2 | |
| 213 punpcklwd mm6,mm3 | |
| 214 punpckhwd mm7,mm3 | |
| 215 movq mm2,mm6 | |
| 216 movq mm3,mm7 | |
| 217 pmaddwd mm6,[GOTOFF(ebx,PW_MF060_MF050)] ; mm6=(tmp2L) | |
| 218 pmaddwd mm7,[GOTOFF(ebx,PW_MF060_MF050)] ; mm7=(tmp2H) | |
| 219 pmaddwd mm2,[GOTOFF(ebx,PW_F145_MF021)] ; mm2=(tmp0L) | |
| 220 pmaddwd mm3,[GOTOFF(ebx,PW_F145_MF021)] ; mm3=(tmp0H) | |
| 221 | |
| 222 paddd mm6,mm4 ; mm6=tmp2L | |
| 223 paddd mm7,mm5 ; mm7=tmp2H | |
| 224 paddd mm2,mm0 ; mm2=tmp0L | |
| 225 paddd mm3,mm1 ; mm3=tmp0H | |
| 226 | |
| 227 movq MMWORD [wk(0)], mm2 ; wk(0)=tmp0L | |
| 228 movq MMWORD [wk(1)], mm3 ; wk(1)=tmp0H | |
| 229 | |
| 230 ; -- Even part | |
| 231 | |
| 232 movq mm4, MMWORD [MMBLOCK(0,0,esi,SIZEOF_JCOEF)] | |
| 233 movq mm5, MMWORD [MMBLOCK(2,0,esi,SIZEOF_JCOEF)] | |
| 234 movq mm0, MMWORD [MMBLOCK(6,0,esi,SIZEOF_JCOEF)] | |
| 235 pmullw mm4, MMWORD [MMBLOCK(0,0,edx,SIZEOF_ISLOW_MULT_TYPE)] | |
| 236 pmullw mm5, MMWORD [MMBLOCK(2,0,edx,SIZEOF_ISLOW_MULT_TYPE)] | |
| 237 pmullw mm0, MMWORD [MMBLOCK(6,0,edx,SIZEOF_ISLOW_MULT_TYPE)] | |
| 238 | |
| 239 pxor mm1,mm1 | |
| 240 pxor mm2,mm2 | |
| 241 punpcklwd mm1,mm4 ; mm1=tmp0L | |
| 242 punpckhwd mm2,mm4 ; mm2=tmp0H | |
| 243 psrad mm1,(16-CONST_BITS-1) ; psrad mm1,16 & pslld mm1,CONST_BITS+1 | |
| 244 psrad mm2,(16-CONST_BITS-1) ; psrad mm2,16 & pslld mm2,CONST_BITS+1 | |
| 245 | |
| 246 movq mm3,mm5 ; mm5=in2=z2 | |
| 247 punpcklwd mm5,mm0 ; mm0=in6=z3 | |
| 248 punpckhwd mm3,mm0 | |
| 249 pmaddwd mm5,[GOTOFF(ebx,PW_F184_MF076)] ; mm5=tmp2L | |
| 250 pmaddwd mm3,[GOTOFF(ebx,PW_F184_MF076)] ; mm3=tmp2H | |
| 251 | |
| 252 movq mm4,mm1 | |
| 253 movq mm0,mm2 | |
| 254 paddd mm1,mm5 ; mm1=tmp10L | |
| 255 paddd mm2,mm3 ; mm2=tmp10H | |
| 256 psubd mm4,mm5 ; mm4=tmp12L | |
| 257 psubd mm0,mm3 ; mm0=tmp12H | |
| 258 | |
| 259 ; -- Final output stage | |
| 260 | |
| 261 movq mm5,mm1 | |
| 262 movq mm3,mm2 | |
| 263 paddd mm1,mm6 ; mm1=data0L | |
| 264 paddd mm2,mm7 ; mm2=data0H | |
| 265 psubd mm5,mm6 ; mm5=data3L | |
| 266 psubd mm3,mm7 ; mm3=data3H | |
| 267 | |
| 268 movq mm6,[GOTOFF(ebx,PD_DESCALE_P1_4)] ; mm6=[PD_DESCALE_P1_4] | |
| 269 | |
| 270 paddd mm1,mm6 | |
| 271 paddd mm2,mm6 | |
| 272 psrad mm1,DESCALE_P1_4 | |
| 273 psrad mm2,DESCALE_P1_4 | |
| 274 paddd mm5,mm6 | |
| 275 paddd mm3,mm6 | |
| 276 psrad mm5,DESCALE_P1_4 | |
| 277 psrad mm3,DESCALE_P1_4 | |
| 278 | |
| 279 packssdw mm1,mm2 ; mm1=data0=(00 01 02 03) | |
| 280 packssdw mm5,mm3 ; mm5=data3=(30 31 32 33) | |
| 281 | |
| 282 movq mm7, MMWORD [wk(0)] ; mm7=tmp0L | |
| 283 movq mm6, MMWORD [wk(1)] ; mm6=tmp0H | |
| 284 | |
| 285 movq mm2,mm4 | |
| 286 movq mm3,mm0 | |
| 287 paddd mm4,mm7 ; mm4=data1L | |
| 288 paddd mm0,mm6 ; mm0=data1H | |
| 289 psubd mm2,mm7 ; mm2=data2L | |
| 290 psubd mm3,mm6 ; mm3=data2H | |
| 291 | |
| 292 movq mm7,[GOTOFF(ebx,PD_DESCALE_P1_4)] ; mm7=[PD_DESCALE_P1_4] | |
| 293 | |
| 294 paddd mm4,mm7 | |
| 295 paddd mm0,mm7 | |
| 296 psrad mm4,DESCALE_P1_4 | |
| 297 psrad mm0,DESCALE_P1_4 | |
| 298 paddd mm2,mm7 | |
| 299 paddd mm3,mm7 | |
| 300 psrad mm2,DESCALE_P1_4 | |
| 301 psrad mm3,DESCALE_P1_4 | |
| 302 | |
| 303 packssdw mm4,mm0 ; mm4=data1=(10 11 12 13) | |
| 304 packssdw mm2,mm3 ; mm2=data2=(20 21 22 23) | |
| 305 | |
| 306 movq mm6,mm1 ; transpose coefficients(phase 1) | |
| 307 punpcklwd mm1,mm4 ; mm1=(00 10 01 11) | |
| 308 punpckhwd mm6,mm4 ; mm6=(02 12 03 13) | |
| 309 movq mm7,mm2 ; transpose coefficients(phase 1) | |
| 310 punpcklwd mm2,mm5 ; mm2=(20 30 21 31) | |
| 311 punpckhwd mm7,mm5 ; mm7=(22 32 23 33) | |
| 312 | |
| 313 movq mm0,mm1 ; transpose coefficients(phase 2) | |
| 314 punpckldq mm1,mm2 ; mm1=(00 10 20 30) | |
| 315 punpckhdq mm0,mm2 ; mm0=(01 11 21 31) | |
| 316 movq mm3,mm6 ; transpose coefficients(phase 2) | |
| 317 punpckldq mm6,mm7 ; mm6=(02 12 22 32) | |
| 318 punpckhdq mm3,mm7 ; mm3=(03 13 23 33) | |
| 319 | |
| 320 movq MMWORD [MMBLOCK(0,0,edi,SIZEOF_JCOEF)], mm1 | |
| 321 movq MMWORD [MMBLOCK(1,0,edi,SIZEOF_JCOEF)], mm0 | |
| 322 movq MMWORD [MMBLOCK(2,0,edi,SIZEOF_JCOEF)], mm6 | |
| 323 movq MMWORD [MMBLOCK(3,0,edi,SIZEOF_JCOEF)], mm3 | |
| 324 | |
| 325 .nextcolumn: | |
| 326 add esi, byte 4*SIZEOF_JCOEF ; coef_block | |
| 327 add edx, byte 4*SIZEOF_ISLOW_MULT_TYPE ; quantptr | |
| 328 add edi, byte 4*DCTSIZE*SIZEOF_JCOEF ; wsptr | |
| 329 dec ecx ; ctr | |
| 330 jnz near .columnloop | |
| 331 | |
| 332 ; ---- Pass 2: process rows from work array, store into output array. | |
| 333 | |
| 334 mov eax, [original_ebp] | |
| 335 lea esi, [workspace] ; JCOEF * wsptr | |
| 336 mov edi, JSAMPARRAY [output_buf(eax)] ; (JSAMPROW *) | |
| 337 mov eax, JDIMENSION [output_col(eax)] | |
| 338 | |
| 339 ; -- Odd part | |
| 340 | |
| 341 movq mm0, MMWORD [MMBLOCK(1,0,esi,SIZEOF_JCOEF)] | |
| 342 movq mm1, MMWORD [MMBLOCK(3,0,esi,SIZEOF_JCOEF)] | |
| 343 movq mm2, MMWORD [MMBLOCK(5,0,esi,SIZEOF_JCOEF)] | |
| 344 movq mm3, MMWORD [MMBLOCK(7,0,esi,SIZEOF_JCOEF)] | |
| 345 | |
| 346 movq mm4,mm0 | |
| 347 movq mm5,mm0 | |
| 348 punpcklwd mm4,mm1 | |
| 349 punpckhwd mm5,mm1 | |
| 350 movq mm0,mm4 | |
| 351 movq mm1,mm5 | |
| 352 pmaddwd mm4,[GOTOFF(ebx,PW_F256_F089)] ; mm4=(tmp2L) | |
| 353 pmaddwd mm5,[GOTOFF(ebx,PW_F256_F089)] ; mm5=(tmp2H) | |
| 354 pmaddwd mm0,[GOTOFF(ebx,PW_F106_MF217)] ; mm0=(tmp0L) | |
| 355 pmaddwd mm1,[GOTOFF(ebx,PW_F106_MF217)] ; mm1=(tmp0H) | |
| 356 | |
| 357 movq mm6,mm2 | |
| 358 movq mm7,mm2 | |
| 359 punpcklwd mm6,mm3 | |
| 360 punpckhwd mm7,mm3 | |
| 361 movq mm2,mm6 | |
| 362 movq mm3,mm7 | |
| 363 pmaddwd mm6,[GOTOFF(ebx,PW_MF060_MF050)] ; mm6=(tmp2L) | |
| 364 pmaddwd mm7,[GOTOFF(ebx,PW_MF060_MF050)] ; mm7=(tmp2H) | |
| 365 pmaddwd mm2,[GOTOFF(ebx,PW_F145_MF021)] ; mm2=(tmp0L) | |
| 366 pmaddwd mm3,[GOTOFF(ebx,PW_F145_MF021)] ; mm3=(tmp0H) | |
| 367 | |
| 368 paddd mm6,mm4 ; mm6=tmp2L | |
| 369 paddd mm7,mm5 ; mm7=tmp2H | |
| 370 paddd mm2,mm0 ; mm2=tmp0L | |
| 371 paddd mm3,mm1 ; mm3=tmp0H | |
| 372 | |
| 373 movq MMWORD [wk(0)], mm2 ; wk(0)=tmp0L | |
| 374 movq MMWORD [wk(1)], mm3 ; wk(1)=tmp0H | |
| 375 | |
| 376 ; -- Even part | |
| 377 | |
| 378 movq mm4, MMWORD [MMBLOCK(0,0,esi,SIZEOF_JCOEF)] | |
| 379 movq mm5, MMWORD [MMBLOCK(2,0,esi,SIZEOF_JCOEF)] | |
| 380 movq mm0, MMWORD [MMBLOCK(6,0,esi,SIZEOF_JCOEF)] | |
| 381 | |
| 382 pxor mm1,mm1 | |
| 383 pxor mm2,mm2 | |
| 384 punpcklwd mm1,mm4 ; mm1=tmp0L | |
| 385 punpckhwd mm2,mm4 ; mm2=tmp0H | |
| 386 psrad mm1,(16-CONST_BITS-1) ; psrad mm1,16 & pslld mm1,CONST_BITS+1 | |
| 387 psrad mm2,(16-CONST_BITS-1) ; psrad mm2,16 & pslld mm2,CONST_BITS+1 | |
| 388 | |
| 389 movq mm3,mm5 ; mm5=in2=z2 | |
| 390 punpcklwd mm5,mm0 ; mm0=in6=z3 | |
| 391 punpckhwd mm3,mm0 | |
| 392 pmaddwd mm5,[GOTOFF(ebx,PW_F184_MF076)] ; mm5=tmp2L | |
| 393 pmaddwd mm3,[GOTOFF(ebx,PW_F184_MF076)] ; mm3=tmp2H | |
| 394 | |
| 395 movq mm4,mm1 | |
| 396 movq mm0,mm2 | |
| 397 paddd mm1,mm5 ; mm1=tmp10L | |
| 398 paddd mm2,mm3 ; mm2=tmp10H | |
| 399 psubd mm4,mm5 ; mm4=tmp12L | |
| 400 psubd mm0,mm3 ; mm0=tmp12H | |
| 401 | |
| 402 ; -- Final output stage | |
| 403 | |
| 404 movq mm5,mm1 | |
| 405 movq mm3,mm2 | |
| 406 paddd mm1,mm6 ; mm1=data0L | |
| 407 paddd mm2,mm7 ; mm2=data0H | |
| 408 psubd mm5,mm6 ; mm5=data3L | |
| 409 psubd mm3,mm7 ; mm3=data3H | |
| 410 | |
| 411 movq mm6,[GOTOFF(ebx,PD_DESCALE_P2_4)] ; mm6=[PD_DESCALE_P2_4] | |
| 412 | |
| 413 paddd mm1,mm6 | |
| 414 paddd mm2,mm6 | |
| 415 psrad mm1,DESCALE_P2_4 | |
| 416 psrad mm2,DESCALE_P2_4 | |
| 417 paddd mm5,mm6 | |
| 418 paddd mm3,mm6 | |
| 419 psrad mm5,DESCALE_P2_4 | |
| 420 psrad mm3,DESCALE_P2_4 | |
| 421 | |
| 422 packssdw mm1,mm2 ; mm1=data0=(00 10 20 30) | |
| 423 packssdw mm5,mm3 ; mm5=data3=(03 13 23 33) | |
| 424 | |
| 425 movq mm7, MMWORD [wk(0)] ; mm7=tmp0L | |
| 426 movq mm6, MMWORD [wk(1)] ; mm6=tmp0H | |
| 427 | |
| 428 movq mm2,mm4 | |
| 429 movq mm3,mm0 | |
| 430 paddd mm4,mm7 ; mm4=data1L | |
| 431 paddd mm0,mm6 ; mm0=data1H | |
| 432 psubd mm2,mm7 ; mm2=data2L | |
| 433 psubd mm3,mm6 ; mm3=data2H | |
| 434 | |
| 435 movq mm7,[GOTOFF(ebx,PD_DESCALE_P2_4)] ; mm7=[PD_DESCALE_P2_4] | |
| 436 | |
| 437 paddd mm4,mm7 | |
| 438 paddd mm0,mm7 | |
| 439 psrad mm4,DESCALE_P2_4 | |
| 440 psrad mm0,DESCALE_P2_4 | |
| 441 paddd mm2,mm7 | |
| 442 paddd mm3,mm7 | |
| 443 psrad mm2,DESCALE_P2_4 | |
| 444 psrad mm3,DESCALE_P2_4 | |
| 445 | |
| 446 packssdw mm4,mm0 ; mm4=data1=(01 11 21 31) | |
| 447 packssdw mm2,mm3 ; mm2=data2=(02 12 22 32) | |
| 448 | |
| 449 movq mm6,[GOTOFF(ebx,PB_CENTERJSAMP)] ; mm6=[PB_CENTERJSAMP] | |
| 450 | |
| 451 packsswb mm1,mm2 ; mm1=(00 10 20 30 02 12 22 32) | |
| 452 packsswb mm4,mm5 ; mm4=(01 11 21 31 03 13 23 33) | |
| 453 paddb mm1,mm6 | |
| 454 paddb mm4,mm6 | |
| 455 | |
| 456 movq mm7,mm1 ; transpose coefficients(phase 1) | |
| 457 punpcklbw mm1,mm4 ; mm1=(00 01 10 11 20 21 30 31) | |
| 458 punpckhbw mm7,mm4 ; mm7=(02 03 12 13 22 23 32 33) | |
| 459 | |
| 460 movq mm0,mm1 ; transpose coefficients(phase 2) | |
| 461 punpcklwd mm1,mm7 ; mm1=(00 01 02 03 10 11 12 13) | |
| 462 punpckhwd mm0,mm7 ; mm0=(20 21 22 23 30 31 32 33) | |
| 463 | |
| 464 mov edx, JSAMPROW [edi+0*SIZEOF_JSAMPROW] | |
| 465 mov esi, JSAMPROW [edi+2*SIZEOF_JSAMPROW] | |
| 466 movd DWORD [edx+eax*SIZEOF_JSAMPLE], mm1 | |
| 467 movd DWORD [esi+eax*SIZEOF_JSAMPLE], mm0 | |
| 468 | |
| 469 psrlq mm1,4*BYTE_BIT | |
| 470 psrlq mm0,4*BYTE_BIT | |
| 471 | |
| 472 mov edx, JSAMPROW [edi+1*SIZEOF_JSAMPROW] | |
| 473 mov esi, JSAMPROW [edi+3*SIZEOF_JSAMPROW] | |
| 474 movd DWORD [edx+eax*SIZEOF_JSAMPLE], mm1 | |
| 475 movd DWORD [esi+eax*SIZEOF_JSAMPLE], mm0 | |
| 476 | |
| 477 emms ; empty MMX state | |
| 478 | |
| 479 pop edi | |
| 480 pop esi | |
| 481 ; pop edx ; need not be preserved | |
| 482 ; pop ecx ; need not be preserved | |
| 483 poppic ebx | |
| 484 mov esp,ebp ; esp <- aligned ebp | |
| 485 pop esp ; esp <- original ebp | |
| 486 pop ebp | |
| 487 ret | |
| 488 | |
| 489 | |
| 490 ; -------------------------------------------------------------------------- | |
| 491 ; | |
| 492 ; Perform dequantization and inverse DCT on one block of coefficients, | |
| 493 ; producing a reduced-size 2x2 output block. | |
| 494 ; | |
| 495 ; GLOBAL(void) | |
| 496 ; jsimd_idct_2x2_mmx (void * dct_table, JCOEFPTR coef_block, | |
| 497 ; JSAMPARRAY output_buf, JDIMENSION output_col) | |
| 498 ; | |
| 499 | |
| 500 %define dct_table(b) (b)+8 ; void * dct_table | |
| 501 %define coef_block(b) (b)+12 ; JCOEFPTR coef_block | |
| 502 %define output_buf(b) (b)+16 ; JSAMPARRAY output_buf | |
| 503 %define output_col(b) (b)+20 ; JDIMENSION output_col | |
| 504 | |
| 505 align 16 | |
| 506 global EXTN(jsimd_idct_2x2_mmx) | |
| 507 | |
| 508 EXTN(jsimd_idct_2x2_mmx): | |
| 509 push ebp | |
| 510 mov ebp,esp | |
| 511 push ebx | |
| 512 ; push ecx ; need not be preserved | |
| 513 ; push edx ; need not be preserved | |
| 514 push esi | |
| 515 push edi | |
| 516 | |
| 517 get_GOT ebx ; get GOT address | |
| 518 | |
| 519 ; ---- Pass 1: process columns from input. | |
| 520 | |
| 521 mov edx, POINTER [dct_table(ebp)] ; quantptr | |
| 522 mov esi, JCOEFPTR [coef_block(ebp)] ; inptr | |
| 523 | |
| 524 ; | input: | result: | | |
| 525 ; | 00 01 ** 03 ** 05 ** 07 | | | |
| 526 ; | 10 11 ** 13 ** 15 ** 17 | | | |
| 527 ; | ** ** ** ** ** ** ** ** | | | |
| 528 ; | 30 31 ** 33 ** 35 ** 37 | A0 A1 A3 A5 A7 | | |
| 529 ; | ** ** ** ** ** ** ** ** | B0 B1 B3 B5 B7 | | |
| 530 ; | 50 51 ** 53 ** 55 ** 57 | | | |
| 531 ; | ** ** ** ** ** ** ** ** | | | |
| 532 ; | 70 71 ** 73 ** 75 ** 77 | | | |
| 533 | |
| 534 ; -- Odd part | |
| 535 | |
| 536 movq mm0, MMWORD [MMBLOCK(1,0,esi,SIZEOF_JCOEF)] | |
| 537 movq mm1, MMWORD [MMBLOCK(3,0,esi,SIZEOF_JCOEF)] | |
| 538 pmullw mm0, MMWORD [MMBLOCK(1,0,edx,SIZEOF_ISLOW_MULT_TYPE)] | |
| 539 pmullw mm1, MMWORD [MMBLOCK(3,0,edx,SIZEOF_ISLOW_MULT_TYPE)] | |
| 540 movq mm2, MMWORD [MMBLOCK(5,0,esi,SIZEOF_JCOEF)] | |
| 541 movq mm3, MMWORD [MMBLOCK(7,0,esi,SIZEOF_JCOEF)] | |
| 542 pmullw mm2, MMWORD [MMBLOCK(5,0,edx,SIZEOF_ISLOW_MULT_TYPE)] | |
| 543 pmullw mm3, MMWORD [MMBLOCK(7,0,edx,SIZEOF_ISLOW_MULT_TYPE)] | |
| 544 | |
| 545 ; mm0=(10 11 ** 13), mm1=(30 31 ** 33) | |
| 546 ; mm2=(50 51 ** 53), mm3=(70 71 ** 73) | |
| 547 | |
| 548 pcmpeqd mm7,mm7 | |
| 549 pslld mm7,WORD_BIT ; mm7={0x0000 0xFFFF 0x0000 0xFFFF} | |
| 550 | |
| 551 movq mm4,mm0 ; mm4=(10 11 ** 13) | |
| 552 movq mm5,mm2 ; mm5=(50 51 ** 53) | |
| 553 punpcklwd mm4,mm1 ; mm4=(10 30 11 31) | |
| 554 punpcklwd mm5,mm3 ; mm5=(50 70 51 71) | |
| 555 pmaddwd mm4,[GOTOFF(ebx,PW_F362_MF127)] | |
| 556 pmaddwd mm5,[GOTOFF(ebx,PW_F085_MF072)] | |
| 557 | |
| 558 psrld mm0,WORD_BIT ; mm0=(11 -- 13 --) | |
| 559 pand mm1,mm7 ; mm1=(-- 31 -- 33) | |
| 560 psrld mm2,WORD_BIT ; mm2=(51 -- 53 --) | |
| 561 pand mm3,mm7 ; mm3=(-- 71 -- 73) | |
| 562 por mm0,mm1 ; mm0=(11 31 13 33) | |
| 563 por mm2,mm3 ; mm2=(51 71 53 73) | |
| 564 pmaddwd mm0,[GOTOFF(ebx,PW_F362_MF127)] | |
| 565 pmaddwd mm2,[GOTOFF(ebx,PW_F085_MF072)] | |
| 566 | |
| 567 paddd mm4,mm5 ; mm4=tmp0[col0 col1] | |
| 568 | |
| 569 movq mm6, MMWORD [MMBLOCK(1,1,esi,SIZEOF_JCOEF)] | |
| 570 movq mm1, MMWORD [MMBLOCK(3,1,esi,SIZEOF_JCOEF)] | |
| 571 pmullw mm6, MMWORD [MMBLOCK(1,1,edx,SIZEOF_ISLOW_MULT_TYPE)] | |
| 572 pmullw mm1, MMWORD [MMBLOCK(3,1,edx,SIZEOF_ISLOW_MULT_TYPE)] | |
| 573 movq mm3, MMWORD [MMBLOCK(5,1,esi,SIZEOF_JCOEF)] | |
| 574 movq mm5, MMWORD [MMBLOCK(7,1,esi,SIZEOF_JCOEF)] | |
| 575 pmullw mm3, MMWORD [MMBLOCK(5,1,edx,SIZEOF_ISLOW_MULT_TYPE)] | |
| 576 pmullw mm5, MMWORD [MMBLOCK(7,1,edx,SIZEOF_ISLOW_MULT_TYPE)] | |
| 577 | |
| 578 ; mm6=(** 15 ** 17), mm1=(** 35 ** 37) | |
| 579 ; mm3=(** 55 ** 57), mm5=(** 75 ** 77) | |
| 580 | |
| 581 psrld mm6,WORD_BIT ; mm6=(15 -- 17 --) | |
| 582 pand mm1,mm7 ; mm1=(-- 35 -- 37) | |
| 583 psrld mm3,WORD_BIT ; mm3=(55 -- 57 --) | |
| 584 pand mm5,mm7 ; mm5=(-- 75 -- 77) | |
| 585 por mm6,mm1 ; mm6=(15 35 17 37) | |
| 586 por mm3,mm5 ; mm3=(55 75 57 77) | |
| 587 pmaddwd mm6,[GOTOFF(ebx,PW_F362_MF127)] | |
| 588 pmaddwd mm3,[GOTOFF(ebx,PW_F085_MF072)] | |
| 589 | |
| 590 paddd mm0,mm2 ; mm0=tmp0[col1 col3] | |
| 591 paddd mm6,mm3 ; mm6=tmp0[col5 col7] | |
| 592 | |
| 593 ; -- Even part | |
| 594 | |
| 595 movq mm1, MMWORD [MMBLOCK(0,0,esi,SIZEOF_JCOEF)] | |
| 596 movq mm5, MMWORD [MMBLOCK(0,1,esi,SIZEOF_JCOEF)] | |
| 597 pmullw mm1, MMWORD [MMBLOCK(0,0,edx,SIZEOF_ISLOW_MULT_TYPE)] | |
| 598 pmullw mm5, MMWORD [MMBLOCK(0,1,edx,SIZEOF_ISLOW_MULT_TYPE)] | |
| 599 | |
| 600 ; mm1=(00 01 ** 03), mm5=(** 05 ** 07) | |
| 601 | |
| 602 movq mm2,mm1 ; mm2=(00 01 ** 03) | |
| 603 pslld mm1,WORD_BIT ; mm1=(-- 00 -- **) | |
| 604 psrad mm1,(WORD_BIT-CONST_BITS-2) ; mm1=tmp10[col0 ****] | |
| 605 | |
| 606 pand mm2,mm7 ; mm2=(-- 01 -- 03) | |
| 607 pand mm5,mm7 ; mm5=(-- 05 -- 07) | |
| 608 psrad mm2,(WORD_BIT-CONST_BITS-2) ; mm2=tmp10[col1 col3] | |
| 609 psrad mm5,(WORD_BIT-CONST_BITS-2) ; mm5=tmp10[col5 col7] | |
| 610 | |
| 611 ; -- Final output stage | |
| 612 | |
| 613 movq mm3,mm1 | |
| 614 paddd mm1,mm4 ; mm1=data0[col0 ****]=(A0 **) | |
| 615 psubd mm3,mm4 ; mm3=data1[col0 ****]=(B0 **) | |
| 616 punpckldq mm1,mm3 ; mm1=(A0 B0) | |
| 617 | |
| 618 movq mm7,[GOTOFF(ebx,PD_DESCALE_P1_2)] ; mm7=[PD_DESCALE_P1_2] | |
| 619 | |
| 620 movq mm4,mm2 | |
| 621 movq mm3,mm5 | |
| 622 paddd mm2,mm0 ; mm2=data0[col1 col3]=(A1 A3) | |
| 623 paddd mm5,mm6 ; mm5=data0[col5 col7]=(A5 A7) | |
| 624 psubd mm4,mm0 ; mm4=data1[col1 col3]=(B1 B3) | |
| 625 psubd mm3,mm6 ; mm3=data1[col5 col7]=(B5 B7) | |
| 626 | |
| 627 paddd mm1,mm7 | |
| 628 psrad mm1,DESCALE_P1_2 | |
| 629 | |
| 630 paddd mm2,mm7 | |
| 631 paddd mm5,mm7 | |
| 632 psrad mm2,DESCALE_P1_2 | |
| 633 psrad mm5,DESCALE_P1_2 | |
| 634 paddd mm4,mm7 | |
| 635 paddd mm3,mm7 | |
| 636 psrad mm4,DESCALE_P1_2 | |
| 637 psrad mm3,DESCALE_P1_2 | |
| 638 | |
| 639 ; ---- Pass 2: process rows, store into output array. | |
| 640 | |
| 641 mov edi, JSAMPARRAY [output_buf(ebp)] ; (JSAMPROW *) | |
| 642 mov eax, JDIMENSION [output_col(ebp)] | |
| 643 | |
| 644 ; | input:| result:| | |
| 645 ; | A0 B0 | | | |
| 646 ; | A1 B1 | C0 C1 | | |
| 647 ; | A3 B3 | D0 D1 | | |
| 648 ; | A5 B5 | | | |
| 649 ; | A7 B7 | | | |
| 650 | |
| 651 ; -- Odd part | |
| 652 | |
| 653 packssdw mm2,mm4 ; mm2=(A1 A3 B1 B3) | |
| 654 packssdw mm5,mm3 ; mm5=(A5 A7 B5 B7) | |
| 655 pmaddwd mm2,[GOTOFF(ebx,PW_F362_MF127)] | |
| 656 pmaddwd mm5,[GOTOFF(ebx,PW_F085_MF072)] | |
| 657 | |
| 658 paddd mm2,mm5 ; mm2=tmp0[row0 row1] | |
| 659 | |
| 660 ; -- Even part | |
| 661 | |
| 662 pslld mm1,(CONST_BITS+2) ; mm1=tmp10[row0 row1] | |
| 663 | |
| 664 ; -- Final output stage | |
| 665 | |
| 666 movq mm0,[GOTOFF(ebx,PD_DESCALE_P2_2)] ; mm0=[PD_DESCALE_P2_2] | |
| 667 | |
| 668 movq mm6,mm1 | |
| 669 paddd mm1,mm2 ; mm1=data0[row0 row1]=(C0 C1) | |
| 670 psubd mm6,mm2 ; mm6=data1[row0 row1]=(D0 D1) | |
| 671 | |
| 672 paddd mm1,mm0 | |
| 673 paddd mm6,mm0 | |
| 674 psrad mm1,DESCALE_P2_2 | |
| 675 psrad mm6,DESCALE_P2_2 | |
| 676 | |
| 677 movq mm7,mm1 ; transpose coefficients | |
| 678 punpckldq mm1,mm6 ; mm1=(C0 D0) | |
| 679 punpckhdq mm7,mm6 ; mm7=(C1 D1) | |
| 680 | |
| 681 packssdw mm1,mm7 ; mm1=(C0 D0 C1 D1) | |
| 682 packsswb mm1,mm1 ; mm1=(C0 D0 C1 D1 C0 D0 C1 D1) | |
| 683 paddb mm1,[GOTOFF(ebx,PB_CENTERJSAMP)] | |
| 684 | |
| 685 movd ecx,mm1 | |
| 686 movd ebx,mm1 ; ebx=(C0 D0 C1 D1) | |
| 687 shr ecx,2*BYTE_BIT ; ecx=(C1 D1 -- --) | |
| 688 | |
| 689 mov edx, JSAMPROW [edi+0*SIZEOF_JSAMPROW] | |
| 690 mov esi, JSAMPROW [edi+1*SIZEOF_JSAMPROW] | |
| 691 mov WORD [edx+eax*SIZEOF_JSAMPLE], bx | |
| 692 mov WORD [esi+eax*SIZEOF_JSAMPLE], cx | |
| 693 | |
| 694 emms ; empty MMX state | |
| 695 | |
| 696 pop edi | |
| 697 pop esi | |
| 698 ; pop edx ; need not be preserved | |
| 699 ; pop ecx ; need not be preserved | |
| 700 pop ebx | |
| 701 pop ebp | |
| 702 ret | |
| 703 | |
| 704 ; For some reason, the OS X linker does not honor the request to align the | |
| 705 ; segment unless we do this. | |
| 706 align 16 |
