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gerrit.omnirom.org / android_external_tigervnc / 071d033e8b794517c1de2ce19e4f0cffe941c90a / . / common / jpeg / simd / jcclrss2-64.asm
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DRC246c3d92009-06-25 20:38:31 +0000[diff] [blame]1;
2; jcclrss2.asm - colorspace conversion (64-bit SSE2)
3;
4; x86 SIMD extension for IJG JPEG library
5; Copyright (C) 1999-2006, MIYASAKA Masaru.
6; Copyright (C) 2009, D. R. Commander.
7; For conditions of distribution and use, see copyright notice in jsimdext.inc
8;
9; This file should be assembled with NASM (Netwide Assembler),
10; can *not* be assembled with Microsoft's MASM or any compatible
11; assembler (including Borland's Turbo Assembler).
12; NASM is available from http://nasm.sourceforge.net/ or
13; http://sourceforge.net/project/showfiles.php?group_id=6208
14;
15; [TAB8]
16
17%include "jcolsamp.inc"
18
19; --------------------------------------------------------------------------
20 SECTION SEG_TEXT
21 BITS 64
22;
23; Convert some rows of samples to the output colorspace.
24;
25; GLOBAL(void)
26; jsimd_rgb_ycc_convert_sse2 (JDIMENSION img_width,
27; JSAMPARRAY input_buf, JSAMPIMAGE output_buf,
28; JDIMENSION output_row, int num_rows);
29;
30
31; r10 = JDIMENSION img_width
32; r11 = JSAMPARRAY input_buf
33; r12 = JSAMPIMAGE output_buf
34; r13 = JDIMENSION output_row
35; r14 = int num_rows
36
37%define wk(i) rbp-(WK_NUM-(i))*SIZEOF_XMMWORD ; xmmword wk[WK_NUM]
38%define WK_NUM 8
39
40 align 16
41
42 global EXTN(jsimd_rgb_ycc_convert_sse2)
43
44EXTN(jsimd_rgb_ycc_convert_sse2):
45 push rbp
46 mov rax,rsp ; rax = original rbp
47 sub rsp, byte 4
48 and rsp, byte (-SIZEOF_XMMWORD) ; align to 128 bits
49 mov [rsp],rax
50 mov rbp,rsp ; rbp = aligned rbp
51 lea rsp, [wk(0)]
52 push rbx
53 collect_args
54
55 mov rcx, r10
56 test rcx,rcx
57 jz near .return
58
59 push rcx
60
61 mov rsi, r12
62 mov rcx, r13
63 mov rdi, JSAMPARRAY [rsi+0*SIZEOF_JSAMPARRAY]
64 mov rbx, JSAMPARRAY [rsi+1*SIZEOF_JSAMPARRAY]
65 mov rdx, JSAMPARRAY [rsi+2*SIZEOF_JSAMPARRAY]
66 lea rdi, [rdi+rcx*SIZEOF_JSAMPROW]
67 lea rbx, [rbx+rcx*SIZEOF_JSAMPROW]
68 lea rdx, [rdx+rcx*SIZEOF_JSAMPROW]
69
70 pop rcx
71
72 mov rsi, r11
73 mov rax, r14
74 test rax,rax
75 jle near .return
76.rowloop:
77 push rdx
78 push rbx
79 push rdi
80 push rsi
81 push rcx ; col
82
83 mov rsi, JSAMPROW [rsi] ; inptr
84 mov rdi, JSAMPROW [rdi] ; outptr0
85 mov rbx, JSAMPROW [rbx] ; outptr1
86 mov rdx, JSAMPROW [rdx] ; outptr2
87
88 cmp rcx, byte SIZEOF_XMMWORD
89 jae near .columnloop
90
91%if RGB_PIXELSIZE == 3 ; ---------------
92
93.column_ld1:
94 push rax
95 push rdx
96 lea rcx,[rcx+rcx*2] ; imul ecx,RGB_PIXELSIZE
97 test cl, SIZEOF_BYTE
98 jz short .column_ld2
99 sub rcx, byte SIZEOF_BYTE
100 movzx rax, BYTE [rsi+rcx]
101.column_ld2:
102 test cl, SIZEOF_WORD
103 jz short .column_ld4
104 sub rcx, byte SIZEOF_WORD
105 movzx rdx, WORD [rsi+rcx]
106 shl rax, WORD_BIT
107 or rax,rdx
108.column_ld4:
109 movd xmmA,eax
110 pop rdx
111 pop rax
112 test cl, SIZEOF_DWORD
113 jz short .column_ld8
114 sub rcx, byte SIZEOF_DWORD
115 movd xmmF, XMM_DWORD [rsi+rcx]
116 pslldq xmmA, SIZEOF_DWORD
117 por xmmA,xmmF
118.column_ld8:
119 test cl, SIZEOF_MMWORD
120 jz short .column_ld16
121 sub rcx, byte SIZEOF_MMWORD
122 movq xmmB, XMM_MMWORD [rsi+rcx]
123 pslldq xmmA, SIZEOF_MMWORD
124 por xmmA,xmmB
125.column_ld16:
126 test cl, SIZEOF_XMMWORD
127 jz short .column_ld32
128 movdqa xmmF,xmmA
129 movdqu xmmA, XMMWORD [rsi+0*SIZEOF_XMMWORD]
130 mov rcx, SIZEOF_XMMWORD
131 jmp short .rgb_ycc_cnv
132.column_ld32:
133 test cl, 2*SIZEOF_XMMWORD
134 mov rcx, SIZEOF_XMMWORD
135 jz short .rgb_ycc_cnv
136 movdqa xmmB,xmmA
137 movdqu xmmA, XMMWORD [rsi+0*SIZEOF_XMMWORD]
138 movdqu xmmF, XMMWORD [rsi+1*SIZEOF_XMMWORD]
139 jmp short .rgb_ycc_cnv
140
141.columnloop:
142 movdqu xmmA, XMMWORD [rsi+0*SIZEOF_XMMWORD]
143 movdqu xmmF, XMMWORD [rsi+1*SIZEOF_XMMWORD]
144 movdqu xmmB, XMMWORD [rsi+2*SIZEOF_XMMWORD]
145
146.rgb_ycc_cnv:
147 ; xmmA=(00 10 20 01 11 21 02 12 22 03 13 23 04 14 24 05)
148 ; xmmF=(15 25 06 16 26 07 17 27 08 18 28 09 19 29 0A 1A)
149 ; xmmB=(2A 0B 1B 2B 0C 1C 2C 0D 1D 2D 0E 1E 2E 0F 1F 2F)
150
151 movdqa xmmG,xmmA
152 pslldq xmmA,8 ; xmmA=(-- -- -- -- -- -- -- -- 00 10 20 01 11 21 02 12)
153 psrldq xmmG,8 ; xmmG=(22 03 13 23 04 14 24 05 -- -- -- -- -- -- -- --)
154
155 punpckhbw xmmA,xmmF ; xmmA=(00 08 10 18 20 28 01 09 11 19 21 29 02 0A 12 1A)
156 pslldq xmmF,8 ; xmmF=(-- -- -- -- -- -- -- -- 15 25 06 16 26 07 17 27)
157
158 punpcklbw xmmG,xmmB ; xmmG=(22 2A 03 0B 13 1B 23 2B 04 0C 14 1C 24 2C 05 0D)
159 punpckhbw xmmF,xmmB ; xmmF=(15 1D 25 2D 06 0E 16 1E 26 2E 07 0F 17 1F 27 2F)
160
161 movdqa xmmD,xmmA
162 pslldq xmmA,8 ; xmmA=(-- -- -- -- -- -- -- -- 00 08 10 18 20 28 01 09)
163 psrldq xmmD,8 ; xmmD=(11 19 21 29 02 0A 12 1A -- -- -- -- -- -- -- --)
164
165 punpckhbw xmmA,xmmG ; xmmA=(00 04 08 0C 10 14 18 1C 20 24 28 2C 01 05 09 0D)
166 pslldq xmmG,8 ; xmmG=(-- -- -- -- -- -- -- -- 22 2A 03 0B 13 1B 23 2B)
167
168 punpcklbw xmmD,xmmF ; xmmD=(11 15 19 1D 21 25 29 2D 02 06 0A 0E 12 16 1A 1E)
169 punpckhbw xmmG,xmmF ; xmmG=(22 26 2A 2E 03 07 0B 0F 13 17 1B 1F 23 27 2B 2F)
170
171 movdqa xmmE,xmmA
172 pslldq xmmA,8 ; xmmA=(-- -- -- -- -- -- -- -- 00 04 08 0C 10 14 18 1C)
173 psrldq xmmE,8 ; xmmE=(20 24 28 2C 01 05 09 0D -- -- -- -- -- -- -- --)
174
175 punpckhbw xmmA,xmmD ; xmmA=(00 02 04 06 08 0A 0C 0E 10 12 14 16 18 1A 1C 1E)
176 pslldq xmmD,8 ; xmmD=(-- -- -- -- -- -- -- -- 11 15 19 1D 21 25 29 2D)
177
178 punpcklbw xmmE,xmmG ; xmmE=(20 22 24 26 28 2A 2C 2E 01 03 05 07 09 0B 0D 0F)
179 punpckhbw xmmD,xmmG ; xmmD=(11 13 15 17 19 1B 1D 1F 21 23 25 27 29 2B 2D 2F)
180
181 pxor xmmH,xmmH
182
183 movdqa xmmC,xmmA
184 punpcklbw xmmA,xmmH ; xmmA=(00 02 04 06 08 0A 0C 0E)
185 punpckhbw xmmC,xmmH ; xmmC=(10 12 14 16 18 1A 1C 1E)
186
187 movdqa xmmB,xmmE
188 punpcklbw xmmE,xmmH ; xmmE=(20 22 24 26 28 2A 2C 2E)
189 punpckhbw xmmB,xmmH ; xmmB=(01 03 05 07 09 0B 0D 0F)
190
191 movdqa xmmF,xmmD
192 punpcklbw xmmD,xmmH ; xmmD=(11 13 15 17 19 1B 1D 1F)
193 punpckhbw xmmF,xmmH ; xmmF=(21 23 25 27 29 2B 2D 2F)
194
195%else ; RGB_PIXELSIZE == 4 ; -----------
196
197.column_ld1:
198 test cl, SIZEOF_XMMWORD/16
199 jz short .column_ld2
200 sub rcx, byte SIZEOF_XMMWORD/16
201 movd xmmA, XMM_DWORD [rsi+rcx*RGB_PIXELSIZE]
202.column_ld2:
203 test cl, SIZEOF_XMMWORD/8
204 jz short .column_ld4
205 sub rcx, byte SIZEOF_XMMWORD/8
206 movq xmmE, XMM_MMWORD [rsi+rcx*RGB_PIXELSIZE]
207 pslldq xmmA, SIZEOF_MMWORD
208 por xmmA,xmmE
209.column_ld4:
210 test cl, SIZEOF_XMMWORD/4
211 jz short .column_ld8
212 sub rcx, byte SIZEOF_XMMWORD/4
213 movdqa xmmE,xmmA
214 movdqu xmmA, XMMWORD [rsi+rcx*RGB_PIXELSIZE]
215.column_ld8:
216 test cl, SIZEOF_XMMWORD/2
217 mov rcx, SIZEOF_XMMWORD
218 jz short .rgb_ycc_cnv
219 movdqa xmmF,xmmA
220 movdqa xmmH,xmmE
221 movdqu xmmA, XMMWORD [rsi+0*SIZEOF_XMMWORD]
222 movdqu xmmE, XMMWORD [rsi+1*SIZEOF_XMMWORD]
223 jmp short .rgb_ycc_cnv
224
225.columnloop:
226 movdqu xmmA, XMMWORD [rsi+0*SIZEOF_XMMWORD]
227 movdqu xmmE, XMMWORD [rsi+1*SIZEOF_XMMWORD]
228 movdqu xmmF, XMMWORD [rsi+2*SIZEOF_XMMWORD]
229 movdqu xmmH, XMMWORD [rsi+3*SIZEOF_XMMWORD]
230
231.rgb_ycc_cnv:
232 ; xmmA=(00 10 20 30 01 11 21 31 02 12 22 32 03 13 23 33)
233 ; xmmE=(04 14 24 34 05 15 25 35 06 16 26 36 07 17 27 37)
234 ; xmmF=(08 18 28 38 09 19 29 39 0A 1A 2A 3A 0B 1B 2B 3B)
235 ; xmmH=(0C 1C 2C 3C 0D 1D 2D 3D 0E 1E 2E 3E 0F 1F 2F 3F)
236
237 movdqa xmmD,xmmA
238 punpcklbw xmmA,xmmE ; xmmA=(00 04 10 14 20 24 30 34 01 05 11 15 21 25 31 35)
239 punpckhbw xmmD,xmmE ; xmmD=(02 06 12 16 22 26 32 36 03 07 13 17 23 27 33 37)
240
241 movdqa xmmC,xmmF
242 punpcklbw xmmF,xmmH ; xmmF=(08 0C 18 1C 28 2C 38 3C 09 0D 19 1D 29 2D 39 3D)
243 punpckhbw xmmC,xmmH ; xmmC=(0A 0E 1A 1E 2A 2E 3A 3E 0B 0F 1B 1F 2B 2F 3B 3F)
244
245 movdqa xmmB,xmmA
246 punpcklwd xmmA,xmmF ; xmmA=(00 04 08 0C 10 14 18 1C 20 24 28 2C 30 34 38 3C)
247 punpckhwd xmmB,xmmF ; xmmB=(01 05 09 0D 11 15 19 1D 21 25 29 2D 31 35 39 3D)
248
249 movdqa xmmG,xmmD
250 punpcklwd xmmD,xmmC ; xmmD=(02 06 0A 0E 12 16 1A 1E 22 26 2A 2E 32 36 3A 3E)
251 punpckhwd xmmG,xmmC ; xmmG=(03 07 0B 0F 13 17 1B 1F 23 27 2B 2F 33 37 3B 3F)
252
253 movdqa xmmE,xmmA
254 punpcklbw xmmA,xmmD ; xmmA=(00 02 04 06 08 0A 0C 0E 10 12 14 16 18 1A 1C 1E)
255 punpckhbw xmmE,xmmD ; xmmE=(20 22 24 26 28 2A 2C 2E 30 32 34 36 38 3A 3C 3E)
256
257 movdqa xmmH,xmmB
258 punpcklbw xmmB,xmmG ; xmmB=(01 03 05 07 09 0B 0D 0F 11 13 15 17 19 1B 1D 1F)
259 punpckhbw xmmH,xmmG ; xmmH=(21 23 25 27 29 2B 2D 2F 31 33 35 37 39 3B 3D 3F)
260
261 pxor xmmF,xmmF
262
263 movdqa xmmC,xmmA
264 punpcklbw xmmA,xmmF ; xmmA=(00 02 04 06 08 0A 0C 0E)
265 punpckhbw xmmC,xmmF ; xmmC=(10 12 14 16 18 1A 1C 1E)
266
267 movdqa xmmD,xmmB
268 punpcklbw xmmB,xmmF ; xmmB=(01 03 05 07 09 0B 0D 0F)
269 punpckhbw xmmD,xmmF ; xmmD=(11 13 15 17 19 1B 1D 1F)
270
271 movdqa xmmG,xmmE
272 punpcklbw xmmE,xmmF ; xmmE=(20 22 24 26 28 2A 2C 2E)
273 punpckhbw xmmG,xmmF ; xmmG=(30 32 34 36 38 3A 3C 3E)
274
275 punpcklbw xmmF,xmmH
276 punpckhbw xmmH,xmmH
277 psrlw xmmF,BYTE_BIT ; xmmF=(21 23 25 27 29 2B 2D 2F)
278 psrlw xmmH,BYTE_BIT ; xmmH=(31 33 35 37 39 3B 3D 3F)
279
280%endif ; RGB_PIXELSIZE ; ---------------
281
282 ; xmm0=R(02468ACE)=RE, xmm2=G(02468ACE)=GE, xmm4=B(02468ACE)=BE
283 ; xmm1=R(13579BDF)=RO, xmm3=G(13579BDF)=GO, xmm5=B(13579BDF)=BO
284
285 ; (Original)
286 ; Y = 0.29900 * R + 0.58700 * G + 0.11400 * B
287 ; Cb = -0.16874 * R - 0.33126 * G + 0.50000 * B + CENTERJSAMPLE
288 ; Cr = 0.50000 * R - 0.41869 * G - 0.08131 * B + CENTERJSAMPLE
289 ;
290 ; (This implementation)
291 ; Y = 0.29900 * R + 0.33700 * G + 0.11400 * B + 0.25000 * G
292 ; Cb = -0.16874 * R - 0.33126 * G + 0.50000 * B + CENTERJSAMPLE
293 ; Cr = 0.50000 * R - 0.41869 * G - 0.08131 * B + CENTERJSAMPLE
294
295 movdqa XMMWORD [wk(0)], xmm0 ; wk(0)=RE
296 movdqa XMMWORD [wk(1)], xmm1 ; wk(1)=RO
297 movdqa XMMWORD [wk(2)], xmm4 ; wk(2)=BE
298 movdqa XMMWORD [wk(3)], xmm5 ; wk(3)=BO
299
300 movdqa xmm6,xmm1
301 punpcklwd xmm1,xmm3
302 punpckhwd xmm6,xmm3
303 movdqa xmm7,xmm1
304 movdqa xmm4,xmm6
305 pmaddwd xmm1,[PW_F0299_F0337] ; xmm1=ROL*FIX(0.299)+GOL*FIX(0.337)
306 pmaddwd xmm6,[PW_F0299_F0337] ; xmm6=ROH*FIX(0.299)+GOH*FIX(0.337)
307 pmaddwd xmm7,[PW_MF016_MF033] ; xmm7=ROL*-FIX(0.168)+GOL*-FIX(0.331)
308 pmaddwd xmm4,[PW_MF016_MF033] ; xmm4=ROH*-FIX(0.168)+GOH*-FIX(0.331)
309
310 movdqa XMMWORD [wk(4)], xmm1 ; wk(4)=ROL*FIX(0.299)+GOL*FIX(0.337)
311 movdqa XMMWORD [wk(5)], xmm6 ; wk(5)=ROH*FIX(0.299)+GOH*FIX(0.337)
312
313 pxor xmm1,xmm1
314 pxor xmm6,xmm6
315 punpcklwd xmm1,xmm5 ; xmm1=BOL
316 punpckhwd xmm6,xmm5 ; xmm6=BOH
317 psrld xmm1,1 ; xmm1=BOL*FIX(0.500)
318 psrld xmm6,1 ; xmm6=BOH*FIX(0.500)
319
320 movdqa xmm5,[PD_ONEHALFM1_CJ] ; xmm5=[PD_ONEHALFM1_CJ]
321
322 paddd xmm7,xmm1
323 paddd xmm4,xmm6
324 paddd xmm7,xmm5
325 paddd xmm4,xmm5
326 psrld xmm7,SCALEBITS ; xmm7=CbOL
327 psrld xmm4,SCALEBITS ; xmm4=CbOH
328 packssdw xmm7,xmm4 ; xmm7=CbO
329
330 movdqa xmm1, XMMWORD [wk(2)] ; xmm1=BE
331
332 movdqa xmm6,xmm0
333 punpcklwd xmm0,xmm2
334 punpckhwd xmm6,xmm2
335 movdqa xmm5,xmm0
336 movdqa xmm4,xmm6
337 pmaddwd xmm0,[PW_F0299_F0337] ; xmm0=REL*FIX(0.299)+GEL*FIX(0.337)
338 pmaddwd xmm6,[PW_F0299_F0337] ; xmm6=REH*FIX(0.299)+GEH*FIX(0.337)
339 pmaddwd xmm5,[PW_MF016_MF033] ; xmm5=REL*-FIX(0.168)+GEL*-FIX(0.331)
340 pmaddwd xmm4,[PW_MF016_MF033] ; xmm4=REH*-FIX(0.168)+GEH*-FIX(0.331)
341
342 movdqa XMMWORD [wk(6)], xmm0 ; wk(6)=REL*FIX(0.299)+GEL*FIX(0.337)
343 movdqa XMMWORD [wk(7)], xmm6 ; wk(7)=REH*FIX(0.299)+GEH*FIX(0.337)
344
345 pxor xmm0,xmm0
346 pxor xmm6,xmm6
347 punpcklwd xmm0,xmm1 ; xmm0=BEL
348 punpckhwd xmm6,xmm1 ; xmm6=BEH
349 psrld xmm0,1 ; xmm0=BEL*FIX(0.500)
350 psrld xmm6,1 ; xmm6=BEH*FIX(0.500)
351
352 movdqa xmm1,[PD_ONEHALFM1_CJ] ; xmm1=[PD_ONEHALFM1_CJ]
353
354 paddd xmm5,xmm0
355 paddd xmm4,xmm6
356 paddd xmm5,xmm1
357 paddd xmm4,xmm1
358 psrld xmm5,SCALEBITS ; xmm5=CbEL
359 psrld xmm4,SCALEBITS ; xmm4=CbEH
360 packssdw xmm5,xmm4 ; xmm5=CbE
361
362 psllw xmm7,BYTE_BIT
363 por xmm5,xmm7 ; xmm5=Cb
364 movdqa XMMWORD [ebx], xmm5 ; Save Cb
365
366 movdqa xmm0, XMMWORD [wk(3)] ; xmm0=BO
367 movdqa xmm6, XMMWORD [wk(2)] ; xmm6=BE
368 movdqa xmm1, XMMWORD [wk(1)] ; xmm1=RO
369
370 movdqa xmm4,xmm0
371 punpcklwd xmm0,xmm3
372 punpckhwd xmm4,xmm3
373 movdqa xmm7,xmm0
374 movdqa xmm5,xmm4
375 pmaddwd xmm0,[PW_F0114_F0250] ; xmm0=BOL*FIX(0.114)+GOL*FIX(0.250)
376 pmaddwd xmm4,[PW_F0114_F0250] ; xmm4=BOH*FIX(0.114)+GOH*FIX(0.250)
377 pmaddwd xmm7,[PW_MF008_MF041] ; xmm7=BOL*-FIX(0.081)+GOL*-FIX(0.418)
378 pmaddwd xmm5,[PW_MF008_MF041] ; xmm5=BOH*-FIX(0.081)+GOH*-FIX(0.418)
379
380 movdqa xmm3,[PD_ONEHALF] ; xmm3=[PD_ONEHALF]
381
382 paddd xmm0, XMMWORD [wk(4)]
383 paddd xmm4, XMMWORD [wk(5)]
384 paddd xmm0,xmm3
385 paddd xmm4,xmm3
386 psrld xmm0,SCALEBITS ; xmm0=YOL
387 psrld xmm4,SCALEBITS ; xmm4=YOH
388 packssdw xmm0,xmm4 ; xmm0=YO
389
390 pxor xmm3,xmm3
391 pxor xmm4,xmm4
392 punpcklwd xmm3,xmm1 ; xmm3=ROL
393 punpckhwd xmm4,xmm1 ; xmm4=ROH
394 psrld xmm3,1 ; xmm3=ROL*FIX(0.500)
395 psrld xmm4,1 ; xmm4=ROH*FIX(0.500)
396
397 movdqa xmm1,[PD_ONEHALFM1_CJ] ; xmm1=[PD_ONEHALFM1_CJ]
398
399 paddd xmm7,xmm3
400 paddd xmm5,xmm4
401 paddd xmm7,xmm1
402 paddd xmm5,xmm1
403 psrld xmm7,SCALEBITS ; xmm7=CrOL
404 psrld xmm5,SCALEBITS ; xmm5=CrOH
405 packssdw xmm7,xmm5 ; xmm7=CrO
406
407 movdqa xmm3, XMMWORD [wk(0)] ; xmm3=RE
408
409 movdqa xmm4,xmm6
410 punpcklwd xmm6,xmm2
411 punpckhwd xmm4,xmm2
412 movdqa xmm1,xmm6
413 movdqa xmm5,xmm4
414 pmaddwd xmm6,[PW_F0114_F0250] ; xmm6=BEL*FIX(0.114)+GEL*FIX(0.250)
415 pmaddwd xmm4,[PW_F0114_F0250] ; xmm4=BEH*FIX(0.114)+GEH*FIX(0.250)
416 pmaddwd xmm1,[PW_MF008_MF041] ; xmm1=BEL*-FIX(0.081)+GEL*-FIX(0.418)
417 pmaddwd xmm5,[PW_MF008_MF041] ; xmm5=BEH*-FIX(0.081)+GEH*-FIX(0.418)
418
419 movdqa xmm2,[PD_ONEHALF] ; xmm2=[PD_ONEHALF]
420
421 paddd xmm6, XMMWORD [wk(6)]
422 paddd xmm4, XMMWORD [wk(7)]
423 paddd xmm6,xmm2
424 paddd xmm4,xmm2
425 psrld xmm6,SCALEBITS ; xmm6=YEL
426 psrld xmm4,SCALEBITS ; xmm4=YEH
427 packssdw xmm6,xmm4 ; xmm6=YE
428
429 psllw xmm0,BYTE_BIT
430 por xmm6,xmm0 ; xmm6=Y
431 movdqa XMMWORD [rdi], xmm6 ; Save Y
432
433 pxor xmm2,xmm2
434 pxor xmm4,xmm4
435 punpcklwd xmm2,xmm3 ; xmm2=REL
436 punpckhwd xmm4,xmm3 ; xmm4=REH
437 psrld xmm2,1 ; xmm2=REL*FIX(0.500)
438 psrld xmm4,1 ; xmm4=REH*FIX(0.500)
439
440 movdqa xmm0,[PD_ONEHALFM1_CJ] ; xmm0=[PD_ONEHALFM1_CJ]
441
442 paddd xmm1,xmm2
443 paddd xmm5,xmm4
444 paddd xmm1,xmm0
445 paddd xmm5,xmm0
446 psrld xmm1,SCALEBITS ; xmm1=CrEL
447 psrld xmm5,SCALEBITS ; xmm5=CrEH
448 packssdw xmm1,xmm5 ; xmm1=CrE
449
450 psllw xmm7,BYTE_BIT
451 por xmm1,xmm7 ; xmm1=Cr
452 movdqa XMMWORD [rdx], xmm1 ; Save Cr
453
454 sub rcx, byte SIZEOF_XMMWORD
455 add rsi, byte RGB_PIXELSIZE*SIZEOF_XMMWORD ; inptr
456 add rdi, byte SIZEOF_XMMWORD ; outptr0
457 add rbx, byte SIZEOF_XMMWORD ; outptr1
458 add rdx, byte SIZEOF_XMMWORD ; outptr2
459 cmp rcx, byte SIZEOF_XMMWORD
460 jae near .columnloop
461 test rcx,rcx
462 jnz near .column_ld1
463
464 pop rcx ; col
465 pop rsi
466 pop rdi
467 pop rbx
468 pop rdx
469
470 add rsi, byte SIZEOF_JSAMPROW ; input_buf
471 add rdi, byte SIZEOF_JSAMPROW
472 add rbx, byte SIZEOF_JSAMPROW
473 add rdx, byte SIZEOF_JSAMPROW
474 dec rax ; num_rows
475 jg near .rowloop
476
477.return:
478 uncollect_args
479 pop rbx
480 mov rsp,rbp ; rsp <- aligned rbp
481 pop rsp ; rsp <- original rbp
482 pop rbp
483 ret
484