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1 ; | |
2 ; jcclrmmx.asm - colorspace conversion (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 ; [TAB8] | |
18 | |
19 %include "jcolsamp.inc" | |
20 | |
21 ; -------------------------------------------------------------------------- | |
22 ; | |
23 ; Convert some rows of samples to the output colorspace. | |
24 ; | |
25 ; GLOBAL(void) | |
26 ; jsimd_rgb_ycc_convert_mmx (JDIMENSION img_width, | |
27 ; JSAMPARRAY input_buf, JSAMPIMAGE output_buf, | |
28 ; JDIMENSION output_row, int num_rows); | |
29 ; | |
30 | |
31 %define img_width(b) (b)+8 ; JDIMENSION img_width | |
32 %define input_buf(b) (b)+12 ; JSAMPARRAY input_buf | |
33 %define output_buf(b) (b)+16 ; JSAMPIMAGE output_buf | |
34 %define output_row(b) (b)+20 ; JDIMENSION output_row | |
35 %define num_rows(b) (b)+24 ; int num_rows | |
36 | |
37 %define original_ebp ebp+0 | |
38 %define wk(i) ebp-(WK_NUM-(i))*SIZEOF_MMWORD ; mmword wk[WK_NUM] | |
39 %define WK_NUM 8 | |
40 %define gotptr wk(0)-SIZEOF_POINTER ; void * gotptr | |
41 | |
42 align 16 | |
43 global EXTN(jsimd_rgb_ycc_convert_mmx) PRIVATE | |
44 | |
45 EXTN(jsimd_rgb_ycc_convert_mmx): | |
46 push ebp | |
47 mov eax,esp ; eax = original ebp | |
48 sub esp, byte 4 | |
49 and esp, byte (-SIZEOF_MMWORD) ; align to 64 bits | |
50 mov [esp],eax | |
51 mov ebp,esp ; ebp = aligned ebp | |
52 lea esp, [wk(0)] | |
53 pushpic eax ; make a room for GOT address | |
54 push ebx | |
55 ; push ecx ; need not be preserved | |
56 ; push edx ; need not be preserved | |
57 push esi | |
58 push edi | |
59 | |
60 get_GOT ebx ; get GOT address | |
61 movpic POINTER [gotptr], ebx ; save GOT address | |
62 | |
63 mov ecx, JDIMENSION [img_width(eax)] ; num_cols | |
64 test ecx,ecx | |
65 jz near .return | |
66 | |
67 push ecx | |
68 | |
69 mov esi, JSAMPIMAGE [output_buf(eax)] | |
70 mov ecx, JDIMENSION [output_row(eax)] | |
71 mov edi, JSAMPARRAY [esi+0*SIZEOF_JSAMPARRAY] | |
72 mov ebx, JSAMPARRAY [esi+1*SIZEOF_JSAMPARRAY] | |
73 mov edx, JSAMPARRAY [esi+2*SIZEOF_JSAMPARRAY] | |
74 lea edi, [edi+ecx*SIZEOF_JSAMPROW] | |
75 lea ebx, [ebx+ecx*SIZEOF_JSAMPROW] | |
76 lea edx, [edx+ecx*SIZEOF_JSAMPROW] | |
77 | |
78 pop ecx | |
79 | |
80 mov esi, JSAMPARRAY [input_buf(eax)] | |
81 mov eax, INT [num_rows(eax)] | |
82 test eax,eax | |
83 jle near .return | |
84 alignx 16,7 | |
85 .rowloop: | |
86 pushpic eax | |
87 push edx | |
88 push ebx | |
89 push edi | |
90 push esi | |
91 push ecx ; col | |
92 | |
93 mov esi, JSAMPROW [esi] ; inptr | |
94 mov edi, JSAMPROW [edi] ; outptr0 | |
95 mov ebx, JSAMPROW [ebx] ; outptr1 | |
96 mov edx, JSAMPROW [edx] ; outptr2 | |
97 movpic eax, POINTER [gotptr] ; load GOT address (eax) | |
98 | |
99 cmp ecx, byte SIZEOF_MMWORD | |
100 jae short .columnloop | |
101 alignx 16,7 | |
102 | |
103 %if RGB_PIXELSIZE == 3 ; --------------- | |
104 | |
105 .column_ld1: | |
106 push eax | |
107 push edx | |
108 lea ecx,[ecx+ecx*2] ; imul ecx,RGB_PIXELSIZE | |
109 test cl, SIZEOF_BYTE | |
110 jz short .column_ld2 | |
111 sub ecx, byte SIZEOF_BYTE | |
112 xor eax,eax | |
113 mov al, BYTE [esi+ecx] | |
114 .column_ld2: | |
115 test cl, SIZEOF_WORD | |
116 jz short .column_ld4 | |
117 sub ecx, byte SIZEOF_WORD | |
118 xor edx,edx | |
119 mov dx, WORD [esi+ecx] | |
120 shl eax, WORD_BIT | |
121 or eax,edx | |
122 .column_ld4: | |
123 movd mmA,eax | |
124 pop edx | |
125 pop eax | |
126 test cl, SIZEOF_DWORD | |
127 jz short .column_ld8 | |
128 sub ecx, byte SIZEOF_DWORD | |
129 movd mmG, DWORD [esi+ecx] | |
130 psllq mmA, DWORD_BIT | |
131 por mmA,mmG | |
132 .column_ld8: | |
133 test cl, SIZEOF_MMWORD | |
134 jz short .column_ld16 | |
135 movq mmG,mmA | |
136 movq mmA, MMWORD [esi+0*SIZEOF_MMWORD] | |
137 mov ecx, SIZEOF_MMWORD | |
138 jmp short .rgb_ycc_cnv | |
139 .column_ld16: | |
140 test cl, 2*SIZEOF_MMWORD | |
141 mov ecx, SIZEOF_MMWORD | |
142 jz short .rgb_ycc_cnv | |
143 movq mmF,mmA | |
144 movq mmA, MMWORD [esi+0*SIZEOF_MMWORD] | |
145 movq mmG, MMWORD [esi+1*SIZEOF_MMWORD] | |
146 jmp short .rgb_ycc_cnv | |
147 alignx 16,7 | |
148 | |
149 .columnloop: | |
150 movq mmA, MMWORD [esi+0*SIZEOF_MMWORD] | |
151 movq mmG, MMWORD [esi+1*SIZEOF_MMWORD] | |
152 movq mmF, MMWORD [esi+2*SIZEOF_MMWORD] | |
153 | |
154 .rgb_ycc_cnv: | |
155 ; mmA=(00 10 20 01 11 21 02 12) | |
156 ; mmG=(22 03 13 23 04 14 24 05) | |
157 ; mmF=(15 25 06 16 26 07 17 27) | |
158 | |
159 movq mmD,mmA | |
160 psllq mmA,4*BYTE_BIT ; mmA=(-- -- -- -- 00 10 20 01) | |
161 psrlq mmD,4*BYTE_BIT ; mmD=(11 21 02 12 -- -- -- --) | |
162 | |
163 punpckhbw mmA,mmG ; mmA=(00 04 10 14 20 24 01 05) | |
164 psllq mmG,4*BYTE_BIT ; mmG=(-- -- -- -- 22 03 13 23) | |
165 | |
166 punpcklbw mmD,mmF ; mmD=(11 15 21 25 02 06 12 16) | |
167 punpckhbw mmG,mmF ; mmG=(22 26 03 07 13 17 23 27) | |
168 | |
169 movq mmE,mmA | |
170 psllq mmA,4*BYTE_BIT ; mmA=(-- -- -- -- 00 04 10 14) | |
171 psrlq mmE,4*BYTE_BIT ; mmE=(20 24 01 05 -- -- -- --) | |
172 | |
173 punpckhbw mmA,mmD ; mmA=(00 02 04 06 10 12 14 16) | |
174 psllq mmD,4*BYTE_BIT ; mmD=(-- -- -- -- 11 15 21 25) | |
175 | |
176 punpcklbw mmE,mmG ; mmE=(20 22 24 26 01 03 05 07) | |
177 punpckhbw mmD,mmG ; mmD=(11 13 15 17 21 23 25 27) | |
178 | |
179 pxor mmH,mmH | |
180 | |
181 movq mmC,mmA | |
182 punpcklbw mmA,mmH ; mmA=(00 02 04 06) | |
183 punpckhbw mmC,mmH ; mmC=(10 12 14 16) | |
184 | |
185 movq mmB,mmE | |
186 punpcklbw mmE,mmH ; mmE=(20 22 24 26) | |
187 punpckhbw mmB,mmH ; mmB=(01 03 05 07) | |
188 | |
189 movq mmF,mmD | |
190 punpcklbw mmD,mmH ; mmD=(11 13 15 17) | |
191 punpckhbw mmF,mmH ; mmF=(21 23 25 27) | |
192 | |
193 %else ; RGB_PIXELSIZE == 4 ; ----------- | |
194 | |
195 .column_ld1: | |
196 test cl, SIZEOF_MMWORD/8 | |
197 jz short .column_ld2 | |
198 sub ecx, byte SIZEOF_MMWORD/8 | |
199 movd mmA, DWORD [esi+ecx*RGB_PIXELSIZE] | |
200 .column_ld2: | |
201 test cl, SIZEOF_MMWORD/4 | |
202 jz short .column_ld4 | |
203 sub ecx, byte SIZEOF_MMWORD/4 | |
204 movq mmF,mmA | |
205 movq mmA, MMWORD [esi+ecx*RGB_PIXELSIZE] | |
206 .column_ld4: | |
207 test cl, SIZEOF_MMWORD/2 | |
208 mov ecx, SIZEOF_MMWORD | |
209 jz short .rgb_ycc_cnv | |
210 movq mmD,mmA | |
211 movq mmC,mmF | |
212 movq mmA, MMWORD [esi+0*SIZEOF_MMWORD] | |
213 movq mmF, MMWORD [esi+1*SIZEOF_MMWORD] | |
214 jmp short .rgb_ycc_cnv | |
215 alignx 16,7 | |
216 | |
217 .columnloop: | |
218 movq mmA, MMWORD [esi+0*SIZEOF_MMWORD] | |
219 movq mmF, MMWORD [esi+1*SIZEOF_MMWORD] | |
220 movq mmD, MMWORD [esi+2*SIZEOF_MMWORD] | |
221 movq mmC, MMWORD [esi+3*SIZEOF_MMWORD] | |
222 | |
223 .rgb_ycc_cnv: | |
224 ; mmA=(00 10 20 30 01 11 21 31) | |
225 ; mmF=(02 12 22 32 03 13 23 33) | |
226 ; mmD=(04 14 24 34 05 15 25 35) | |
227 ; mmC=(06 16 26 36 07 17 27 37) | |
228 | |
229 movq mmB,mmA | |
230 punpcklbw mmA,mmF ; mmA=(00 02 10 12 20 22 30 32) | |
231 punpckhbw mmB,mmF ; mmB=(01 03 11 13 21 23 31 33) | |
232 | |
233 movq mmG,mmD | |
234 punpcklbw mmD,mmC ; mmD=(04 06 14 16 24 26 34 36) | |
235 punpckhbw mmG,mmC ; mmG=(05 07 15 17 25 27 35 37) | |
236 | |
237 movq mmE,mmA | |
238 punpcklwd mmA,mmD ; mmA=(00 02 04 06 10 12 14 16) | |
239 punpckhwd mmE,mmD ; mmE=(20 22 24 26 30 32 34 36) | |
240 | |
241 movq mmH,mmB | |
242 punpcklwd mmB,mmG ; mmB=(01 03 05 07 11 13 15 17) | |
243 punpckhwd mmH,mmG ; mmH=(21 23 25 27 31 33 35 37) | |
244 | |
245 pxor mmF,mmF | |
246 | |
247 movq mmC,mmA | |
248 punpcklbw mmA,mmF ; mmA=(00 02 04 06) | |
249 punpckhbw mmC,mmF ; mmC=(10 12 14 16) | |
250 | |
251 movq mmD,mmB | |
252 punpcklbw mmB,mmF ; mmB=(01 03 05 07) | |
253 punpckhbw mmD,mmF ; mmD=(11 13 15 17) | |
254 | |
255 movq mmG,mmE | |
256 punpcklbw mmE,mmF ; mmE=(20 22 24 26) | |
257 punpckhbw mmG,mmF ; mmG=(30 32 34 36) | |
258 | |
259 punpcklbw mmF,mmH | |
260 punpckhbw mmH,mmH | |
261 psrlw mmF,BYTE_BIT ; mmF=(21 23 25 27) | |
262 psrlw mmH,BYTE_BIT ; mmH=(31 33 35 37) | |
263 | |
264 %endif ; RGB_PIXELSIZE ; --------------- | |
265 | |
266 ; mm0=(R0 R2 R4 R6)=RE, mm2=(G0 G2 G4 G6)=GE, mm4=(B0 B2 B4 B6)=BE | |
267 ; mm1=(R1 R3 R5 R7)=RO, mm3=(G1 G3 G5 G7)=GO, mm5=(B1 B3 B5 B7)=BO | |
268 | |
269 ; (Original) | |
270 ; Y = 0.29900 * R + 0.58700 * G + 0.11400 * B | |
271 ; Cb = -0.16874 * R - 0.33126 * G + 0.50000 * B + CENTERJSAMPLE | |
272 ; Cr = 0.50000 * R - 0.41869 * G - 0.08131 * B + CENTERJSAMPLE | |
273 ; | |
274 ; (This implementation) | |
275 ; Y = 0.29900 * R + 0.33700 * G + 0.11400 * B + 0.25000 * G | |
276 ; Cb = -0.16874 * R - 0.33126 * G + 0.50000 * B + CENTERJSAMPLE | |
277 ; Cr = 0.50000 * R - 0.41869 * G - 0.08131 * B + CENTERJSAMPLE | |
278 | |
279 movq MMWORD [wk(0)], mm0 ; wk(0)=RE | |
280 movq MMWORD [wk(1)], mm1 ; wk(1)=RO | |
281 movq MMWORD [wk(2)], mm4 ; wk(2)=BE | |
282 movq MMWORD [wk(3)], mm5 ; wk(3)=BO | |
283 | |
284 movq mm6,mm1 | |
285 punpcklwd mm1,mm3 | |
286 punpckhwd mm6,mm3 | |
287 movq mm7,mm1 | |
288 movq mm4,mm6 | |
289 pmaddwd mm1,[GOTOFF(eax,PW_F0299_F0337)] ; mm1=ROL*FIX(0.299)+GOL*FIX(
0.337) | |
290 pmaddwd mm6,[GOTOFF(eax,PW_F0299_F0337)] ; mm6=ROH*FIX(0.299)+GOH*FIX(
0.337) | |
291 pmaddwd mm7,[GOTOFF(eax,PW_MF016_MF033)] ; mm7=ROL*-FIX(0.168)+GOL*-FI
X(0.331) | |
292 pmaddwd mm4,[GOTOFF(eax,PW_MF016_MF033)] ; mm4=ROH*-FIX(0.168)+GOH*-FI
X(0.331) | |
293 | |
294 movq MMWORD [wk(4)], mm1 ; wk(4)=ROL*FIX(0.299)+GOL*FIX(0.337) | |
295 movq MMWORD [wk(5)], mm6 ; wk(5)=ROH*FIX(0.299)+GOH*FIX(0.337) | |
296 | |
297 pxor mm1,mm1 | |
298 pxor mm6,mm6 | |
299 punpcklwd mm1,mm5 ; mm1=BOL | |
300 punpckhwd mm6,mm5 ; mm6=BOH | |
301 psrld mm1,1 ; mm1=BOL*FIX(0.500) | |
302 psrld mm6,1 ; mm6=BOH*FIX(0.500) | |
303 | |
304 movq mm5,[GOTOFF(eax,PD_ONEHALFM1_CJ)] ; mm5=[PD_ONEHALFM1_CJ] | |
305 | |
306 paddd mm7,mm1 | |
307 paddd mm4,mm6 | |
308 paddd mm7,mm5 | |
309 paddd mm4,mm5 | |
310 psrld mm7,SCALEBITS ; mm7=CbOL | |
311 psrld mm4,SCALEBITS ; mm4=CbOH | |
312 packssdw mm7,mm4 ; mm7=CbO | |
313 | |
314 movq mm1, MMWORD [wk(2)] ; mm1=BE | |
315 | |
316 movq mm6,mm0 | |
317 punpcklwd mm0,mm2 | |
318 punpckhwd mm6,mm2 | |
319 movq mm5,mm0 | |
320 movq mm4,mm6 | |
321 pmaddwd mm0,[GOTOFF(eax,PW_F0299_F0337)] ; mm0=REL*FIX(0.299)+GEL*FIX(
0.337) | |
322 pmaddwd mm6,[GOTOFF(eax,PW_F0299_F0337)] ; mm6=REH*FIX(0.299)+GEH*FIX(
0.337) | |
323 pmaddwd mm5,[GOTOFF(eax,PW_MF016_MF033)] ; mm5=REL*-FIX(0.168)+GEL*-FI
X(0.331) | |
324 pmaddwd mm4,[GOTOFF(eax,PW_MF016_MF033)] ; mm4=REH*-FIX(0.168)+GEH*-FI
X(0.331) | |
325 | |
326 movq MMWORD [wk(6)], mm0 ; wk(6)=REL*FIX(0.299)+GEL*FIX(0.337) | |
327 movq MMWORD [wk(7)], mm6 ; wk(7)=REH*FIX(0.299)+GEH*FIX(0.337) | |
328 | |
329 pxor mm0,mm0 | |
330 pxor mm6,mm6 | |
331 punpcklwd mm0,mm1 ; mm0=BEL | |
332 punpckhwd mm6,mm1 ; mm6=BEH | |
333 psrld mm0,1 ; mm0=BEL*FIX(0.500) | |
334 psrld mm6,1 ; mm6=BEH*FIX(0.500) | |
335 | |
336 movq mm1,[GOTOFF(eax,PD_ONEHALFM1_CJ)] ; mm1=[PD_ONEHALFM1_CJ] | |
337 | |
338 paddd mm5,mm0 | |
339 paddd mm4,mm6 | |
340 paddd mm5,mm1 | |
341 paddd mm4,mm1 | |
342 psrld mm5,SCALEBITS ; mm5=CbEL | |
343 psrld mm4,SCALEBITS ; mm4=CbEH | |
344 packssdw mm5,mm4 ; mm5=CbE | |
345 | |
346 psllw mm7,BYTE_BIT | |
347 por mm5,mm7 ; mm5=Cb | |
348 movq MMWORD [ebx], mm5 ; Save Cb | |
349 | |
350 movq mm0, MMWORD [wk(3)] ; mm0=BO | |
351 movq mm6, MMWORD [wk(2)] ; mm6=BE | |
352 movq mm1, MMWORD [wk(1)] ; mm1=RO | |
353 | |
354 movq mm4,mm0 | |
355 punpcklwd mm0,mm3 | |
356 punpckhwd mm4,mm3 | |
357 movq mm7,mm0 | |
358 movq mm5,mm4 | |
359 pmaddwd mm0,[GOTOFF(eax,PW_F0114_F0250)] ; mm0=BOL*FIX(0.114)+GOL*FIX(
0.250) | |
360 pmaddwd mm4,[GOTOFF(eax,PW_F0114_F0250)] ; mm4=BOH*FIX(0.114)+GOH*FIX(
0.250) | |
361 pmaddwd mm7,[GOTOFF(eax,PW_MF008_MF041)] ; mm7=BOL*-FIX(0.081)+GOL*-FI
X(0.418) | |
362 pmaddwd mm5,[GOTOFF(eax,PW_MF008_MF041)] ; mm5=BOH*-FIX(0.081)+GOH*-FI
X(0.418) | |
363 | |
364 movq mm3,[GOTOFF(eax,PD_ONEHALF)] ; mm3=[PD_ONEHALF] | |
365 | |
366 paddd mm0, MMWORD [wk(4)] | |
367 paddd mm4, MMWORD [wk(5)] | |
368 paddd mm0,mm3 | |
369 paddd mm4,mm3 | |
370 psrld mm0,SCALEBITS ; mm0=YOL | |
371 psrld mm4,SCALEBITS ; mm4=YOH | |
372 packssdw mm0,mm4 ; mm0=YO | |
373 | |
374 pxor mm3,mm3 | |
375 pxor mm4,mm4 | |
376 punpcklwd mm3,mm1 ; mm3=ROL | |
377 punpckhwd mm4,mm1 ; mm4=ROH | |
378 psrld mm3,1 ; mm3=ROL*FIX(0.500) | |
379 psrld mm4,1 ; mm4=ROH*FIX(0.500) | |
380 | |
381 movq mm1,[GOTOFF(eax,PD_ONEHALFM1_CJ)] ; mm1=[PD_ONEHALFM1_CJ] | |
382 | |
383 paddd mm7,mm3 | |
384 paddd mm5,mm4 | |
385 paddd mm7,mm1 | |
386 paddd mm5,mm1 | |
387 psrld mm7,SCALEBITS ; mm7=CrOL | |
388 psrld mm5,SCALEBITS ; mm5=CrOH | |
389 packssdw mm7,mm5 ; mm7=CrO | |
390 | |
391 movq mm3, MMWORD [wk(0)] ; mm3=RE | |
392 | |
393 movq mm4,mm6 | |
394 punpcklwd mm6,mm2 | |
395 punpckhwd mm4,mm2 | |
396 movq mm1,mm6 | |
397 movq mm5,mm4 | |
398 pmaddwd mm6,[GOTOFF(eax,PW_F0114_F0250)] ; mm6=BEL*FIX(0.114)+GEL*FIX(
0.250) | |
399 pmaddwd mm4,[GOTOFF(eax,PW_F0114_F0250)] ; mm4=BEH*FIX(0.114)+GEH*FIX(
0.250) | |
400 pmaddwd mm1,[GOTOFF(eax,PW_MF008_MF041)] ; mm1=BEL*-FIX(0.081)+GEL*-FI
X(0.418) | |
401 pmaddwd mm5,[GOTOFF(eax,PW_MF008_MF041)] ; mm5=BEH*-FIX(0.081)+GEH*-FI
X(0.418) | |
402 | |
403 movq mm2,[GOTOFF(eax,PD_ONEHALF)] ; mm2=[PD_ONEHALF] | |
404 | |
405 paddd mm6, MMWORD [wk(6)] | |
406 paddd mm4, MMWORD [wk(7)] | |
407 paddd mm6,mm2 | |
408 paddd mm4,mm2 | |
409 psrld mm6,SCALEBITS ; mm6=YEL | |
410 psrld mm4,SCALEBITS ; mm4=YEH | |
411 packssdw mm6,mm4 ; mm6=YE | |
412 | |
413 psllw mm0,BYTE_BIT | |
414 por mm6,mm0 ; mm6=Y | |
415 movq MMWORD [edi], mm6 ; Save Y | |
416 | |
417 pxor mm2,mm2 | |
418 pxor mm4,mm4 | |
419 punpcklwd mm2,mm3 ; mm2=REL | |
420 punpckhwd mm4,mm3 ; mm4=REH | |
421 psrld mm2,1 ; mm2=REL*FIX(0.500) | |
422 psrld mm4,1 ; mm4=REH*FIX(0.500) | |
423 | |
424 movq mm0,[GOTOFF(eax,PD_ONEHALFM1_CJ)] ; mm0=[PD_ONEHALFM1_CJ] | |
425 | |
426 paddd mm1,mm2 | |
427 paddd mm5,mm4 | |
428 paddd mm1,mm0 | |
429 paddd mm5,mm0 | |
430 psrld mm1,SCALEBITS ; mm1=CrEL | |
431 psrld mm5,SCALEBITS ; mm5=CrEH | |
432 packssdw mm1,mm5 ; mm1=CrE | |
433 | |
434 psllw mm7,BYTE_BIT | |
435 por mm1,mm7 ; mm1=Cr | |
436 movq MMWORD [edx], mm1 ; Save Cr | |
437 | |
438 sub ecx, byte SIZEOF_MMWORD | |
439 add esi, byte RGB_PIXELSIZE*SIZEOF_MMWORD ; inptr | |
440 add edi, byte SIZEOF_MMWORD ; outptr0 | |
441 add ebx, byte SIZEOF_MMWORD ; outptr1 | |
442 add edx, byte SIZEOF_MMWORD ; outptr2 | |
443 cmp ecx, byte SIZEOF_MMWORD | |
444 jae near .columnloop | |
445 test ecx,ecx | |
446 jnz near .column_ld1 | |
447 | |
448 pop ecx ; col | |
449 pop esi | |
450 pop edi | |
451 pop ebx | |
452 pop edx | |
453 poppic eax | |
454 | |
455 add esi, byte SIZEOF_JSAMPROW ; input_buf | |
456 add edi, byte SIZEOF_JSAMPROW | |
457 add ebx, byte SIZEOF_JSAMPROW | |
458 add edx, byte SIZEOF_JSAMPROW | |
459 dec eax ; num_rows | |
460 jg near .rowloop | |
461 | |
462 emms ; empty MMX state | |
463 | |
464 .return: | |
465 pop edi | |
466 pop esi | |
467 ; pop edx ; need not be preserved | |
468 ; pop ecx ; need not be preserved | |
469 pop ebx | |
470 mov esp,ebp ; esp <- aligned ebp | |
471 pop esp ; esp <- original ebp | |
472 pop ebp | |
473 ret | |
474 | |
475 ; For some reason, the OS X linker does not honor the request to align the | |
476 ; segment unless we do this. | |
477 align 16 | |
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