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comparison: media/libjpeg/simd/jiss2int.asm

media/libjpeg/simd/jiss2int.asm

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1 ;
2 ; jiss2int.asm - accurate integer IDCT (SSE2)
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 a slow-but-accurate integer implementation of the
18 ; inverse DCT (Discrete Cosine Transform). The following code is based
19 ; directly on the IJG's original jidctint.c; see the jidctint.c for
20 ; 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 (CONST_BITS-PASS1_BITS)
33 %define DESCALE_P2 (CONST_BITS+PASS1_BITS+3)
34
35 %if CONST_BITS == 13
36 F_0_298 equ 2446 ; FIX(0.298631336)
37 F_0_390 equ 3196 ; FIX(0.390180644)
38 F_0_541 equ 4433 ; FIX(0.541196100)
39 F_0_765 equ 6270 ; FIX(0.765366865)
40 F_0_899 equ 7373 ; FIX(0.899976223)
41 F_1_175 equ 9633 ; FIX(1.175875602)
42 F_1_501 equ 12299 ; FIX(1.501321110)
43 F_1_847 equ 15137 ; FIX(1.847759065)
44 F_1_961 equ 16069 ; FIX(1.961570560)
45 F_2_053 equ 16819 ; FIX(2.053119869)
46 F_2_562 equ 20995 ; FIX(2.562915447)
47 F_3_072 equ 25172 ; FIX(3.072711026)
48 %else
49 ; NASM cannot do compile-time arithmetic on floating-point constants.
50 %define DESCALE(x,n) (((x)+(1<<((n)-1)))>>(n))
51 F_0_298 equ DESCALE( 320652955,30-CONST_BITS) ; FIX(0.298631336)
52 F_0_390 equ DESCALE( 418953276,30-CONST_BITS) ; FIX(0.390180644)
53 F_0_541 equ DESCALE( 581104887,30-CONST_BITS) ; FIX(0.541196100)
54 F_0_765 equ DESCALE( 821806413,30-CONST_BITS) ; FIX(0.765366865)
55 F_0_899 equ DESCALE( 966342111,30-CONST_BITS) ; FIX(0.899976223)
56 F_1_175 equ DESCALE(1262586813,30-CONST_BITS) ; FIX(1.175875602)
57 F_1_501 equ DESCALE(1612031267,30-CONST_BITS) ; FIX(1.501321110)
58 F_1_847 equ DESCALE(1984016188,30-CONST_BITS) ; FIX(1.847759065)
59 F_1_961 equ DESCALE(2106220350,30-CONST_BITS) ; FIX(1.961570560)
60 F_2_053 equ DESCALE(2204520673,30-CONST_BITS) ; FIX(2.053119869)
61 F_2_562 equ DESCALE(2751909506,30-CONST_BITS) ; FIX(2.562915447)
62 F_3_072 equ DESCALE(3299298341,30-CONST_BITS) ; FIX(3.072711026)
63 %endif
64
65 ; --------------------------------------------------------------------------
66 SECTION SEG_CONST
67
68 alignz 16
69 global EXTN(jconst_idct_islow_sse2)
70
71 EXTN(jconst_idct_islow_sse2):
72
73 PW_F130_F054 times 4 dw (F_0_541+F_0_765), F_0_541
74 PW_F054_MF130 times 4 dw F_0_541, (F_0_541-F_1_847)
75 PW_MF078_F117 times 4 dw (F_1_175-F_1_961), F_1_175
76 PW_F117_F078 times 4 dw F_1_175, (F_1_175-F_0_390)
77 PW_MF060_MF089 times 4 dw (F_0_298-F_0_899),-F_0_899
78 PW_MF089_F060 times 4 dw -F_0_899, (F_1_501-F_0_899)
79 PW_MF050_MF256 times 4 dw (F_2_053-F_2_562),-F_2_562
80 PW_MF256_F050 times 4 dw -F_2_562, (F_3_072-F_2_562)
81 PD_DESCALE_P1 times 4 dd 1 << (DESCALE_P1-1)
82 PD_DESCALE_P2 times 4 dd 1 << (DESCALE_P2-1)
83 PB_CENTERJSAMP times 16 db CENTERJSAMPLE
84
85 alignz 16
86
87 ; --------------------------------------------------------------------------
88 SECTION SEG_TEXT
89 BITS 32
90 ;
91 ; Perform dequantization and inverse DCT on one block of coefficients.
92 ;
93 ; GLOBAL(void)
94 ; jsimd_idct_islow_sse2 (void * dct_table, JCOEFPTR coef_block,
95 ; JSAMPARRAY output_buf, JDIMENSION output_col)
96 ;
97
98 %define dct_table(b) (b)+8 ; jpeg_component_info * compptr
99 %define coef_block(b) (b)+12 ; JCOEFPTR coef_block
100 %define output_buf(b) (b)+16 ; JSAMPARRAY output_buf
101 %define output_col(b) (b)+20 ; JDIMENSION output_col
102
103 %define original_ebp ebp+0
104 %define wk(i) ebp-(WK_NUM-(i))*SIZEOF_XMMWORD ; xmmword wk[WK_NUM]
105 %define WK_NUM 12
106
107 align 16
108 global EXTN(jsimd_idct_islow_sse2)
109
110 EXTN(jsimd_idct_islow_sse2):
111 push ebp
112 mov eax,esp ; eax = original ebp
113 sub esp, byte 4
114 and esp, byte (-SIZEOF_XMMWORD) ; align to 128 bits
115 mov [esp],eax
116 mov ebp,esp ; ebp = aligned ebp
117 lea esp, [wk(0)]
118 pushpic ebx
119 ; push ecx ; unused
120 ; push edx ; need not be preserved
121 push esi
122 push edi
123
124 get_GOT ebx ; get GOT address
125
126 ; ---- Pass 1: process columns from input.
127
128 ; mov eax, [original_ebp]
129 mov edx, POINTER [dct_table(eax)] ; quantptr
130 mov esi, JCOEFPTR [coef_block(eax)] ; inptr
131
132 %ifndef NO_ZERO_COLUMN_TEST_ISLOW_SSE2
133 mov eax, DWORD [DWBLOCK(1,0,esi,SIZEOF_JCOEF)]
134 or eax, DWORD [DWBLOCK(2,0,esi,SIZEOF_JCOEF)]
135 jnz near .columnDCT
136
137 movdqa xmm0, XMMWORD [XMMBLOCK(1,0,esi,SIZEOF_JCOEF)]
138 movdqa xmm1, XMMWORD [XMMBLOCK(2,0,esi,SIZEOF_JCOEF)]
139 por xmm0, XMMWORD [XMMBLOCK(3,0,esi,SIZEOF_JCOEF)]
140 por xmm1, XMMWORD [XMMBLOCK(4,0,esi,SIZEOF_JCOEF)]
141 por xmm0, XMMWORD [XMMBLOCK(5,0,esi,SIZEOF_JCOEF)]
142 por xmm1, XMMWORD [XMMBLOCK(6,0,esi,SIZEOF_JCOEF)]
143 por xmm0, XMMWORD [XMMBLOCK(7,0,esi,SIZEOF_JCOEF)]
144 por xmm1,xmm0
145 packsswb xmm1,xmm1
146 packsswb xmm1,xmm1
147 movd eax,xmm1
148 test eax,eax
149 jnz short .columnDCT
150
151 ; -- AC terms all zero
152
153 movdqa xmm5, XMMWORD [XMMBLOCK(0,0,esi,SIZEOF_JCOEF)]
154 pmullw xmm5, XMMWORD [XMMBLOCK(0,0,edx,SIZEOF_ISLOW_MULT_TYPE)]
155
156 psllw xmm5,PASS1_BITS
157
158 movdqa xmm4,xmm5 ; xmm5=in0=(00 01 02 03 04 05 06 07)
159 punpcklwd xmm5,xmm5 ; xmm5=(00 00 01 01 02 02 03 03)
160 punpckhwd xmm4,xmm4 ; xmm4=(04 04 05 05 06 06 07 07)
161
162 pshufd xmm7,xmm5,0x00 ; xmm7=col0=(00 00 00 00 00 00 00 00)
163 pshufd xmm6,xmm5,0x55 ; xmm6=col1=(01 01 01 01 01 01 01 01)
164 pshufd xmm1,xmm5,0xAA ; xmm1=col2=(02 02 02 02 02 02 02 02)
165 pshufd xmm5,xmm5,0xFF ; xmm5=col3=(03 03 03 03 03 03 03 03)
166 pshufd xmm0,xmm4,0x00 ; xmm0=col4=(04 04 04 04 04 04 04 04)
167 pshufd xmm3,xmm4,0x55 ; xmm3=col5=(05 05 05 05 05 05 05 05)
168 pshufd xmm2,xmm4,0xAA ; xmm2=col6=(06 06 06 06 06 06 06 06)
169 pshufd xmm4,xmm4,0xFF ; xmm4=col7=(07 07 07 07 07 07 07 07)
170
171 movdqa XMMWORD [wk(8)], xmm6 ; wk(8)=col1
172 movdqa XMMWORD [wk(9)], xmm5 ; wk(9)=col3
173 movdqa XMMWORD [wk(10)], xmm3 ; wk(10)=col5
174 movdqa XMMWORD [wk(11)], xmm4 ; wk(11)=col7
175 jmp near .column_end
176 alignx 16,7
177 %endif
178 .columnDCT:
179
180 ; -- Even part
181
182 movdqa xmm0, XMMWORD [XMMBLOCK(0,0,esi,SIZEOF_JCOEF)]
183 movdqa xmm1, XMMWORD [XMMBLOCK(2,0,esi,SIZEOF_JCOEF)]
184 pmullw xmm0, XMMWORD [XMMBLOCK(0,0,edx,SIZEOF_ISLOW_MULT_TYPE)]
185 pmullw xmm1, XMMWORD [XMMBLOCK(2,0,edx,SIZEOF_ISLOW_MULT_TYPE)]
186 movdqa xmm2, XMMWORD [XMMBLOCK(4,0,esi,SIZEOF_JCOEF)]
187 movdqa xmm3, XMMWORD [XMMBLOCK(6,0,esi,SIZEOF_JCOEF)]
188 pmullw xmm2, XMMWORD [XMMBLOCK(4,0,edx,SIZEOF_ISLOW_MULT_TYPE)]
189 pmullw xmm3, XMMWORD [XMMBLOCK(6,0,edx,SIZEOF_ISLOW_MULT_TYPE)]
190
191 ; (Original)
192 ; z1 = (z2 + z3) * 0.541196100;
193 ; tmp2 = z1 + z3 * -1.847759065;
194 ; tmp3 = z1 + z2 * 0.765366865;
195 ;
196 ; (This implementation)
197 ; tmp2 = z2 * 0.541196100 + z3 * (0.541196100 - 1.847759065);
198 ; tmp3 = z2 * (0.541196100 + 0.765366865) + z3 * 0.541196100;
199
200 movdqa xmm4,xmm1 ; xmm1=in2=z2
201 movdqa xmm5,xmm1
202 punpcklwd xmm4,xmm3 ; xmm3=in6=z3
203 punpckhwd xmm5,xmm3
204 movdqa xmm1,xmm4
205 movdqa xmm3,xmm5
206 pmaddwd xmm4,[GOTOFF(ebx,PW_F130_F054)] ; xmm4=tmp3L
207 pmaddwd xmm5,[GOTOFF(ebx,PW_F130_F054)] ; xmm5=tmp3H
208 pmaddwd xmm1,[GOTOFF(ebx,PW_F054_MF130)] ; xmm1=tmp2L
209 pmaddwd xmm3,[GOTOFF(ebx,PW_F054_MF130)] ; xmm3=tmp2H
210
211 movdqa xmm6,xmm0
212 paddw xmm0,xmm2 ; xmm0=in0+in4
213 psubw xmm6,xmm2 ; xmm6=in0-in4
214
215 pxor xmm7,xmm7
216 pxor xmm2,xmm2
217 punpcklwd xmm7,xmm0 ; xmm7=tmp0L
218 punpckhwd xmm2,xmm0 ; xmm2=tmp0H
219 psrad xmm7,(16-CONST_BITS) ; psrad xmm7,16 & pslld xmm7,CONST_BITS
220 psrad xmm2,(16-CONST_BITS) ; psrad xmm2,16 & pslld xmm2,CONST_BITS
221
222 movdqa xmm0,xmm7
223 paddd xmm7,xmm4 ; xmm7=tmp10L
224 psubd xmm0,xmm4 ; xmm0=tmp13L
225 movdqa xmm4,xmm2
226 paddd xmm2,xmm5 ; xmm2=tmp10H
227 psubd xmm4,xmm5 ; xmm4=tmp13H
228
229 movdqa XMMWORD [wk(0)], xmm7 ; wk(0)=tmp10L
230 movdqa XMMWORD [wk(1)], xmm2 ; wk(1)=tmp10H
231 movdqa XMMWORD [wk(2)], xmm0 ; wk(2)=tmp13L
232 movdqa XMMWORD [wk(3)], xmm4 ; wk(3)=tmp13H
233
234 pxor xmm5,xmm5
235 pxor xmm7,xmm7
236 punpcklwd xmm5,xmm6 ; xmm5=tmp1L
237 punpckhwd xmm7,xmm6 ; xmm7=tmp1H
238 psrad xmm5,(16-CONST_BITS) ; psrad xmm5,16 & pslld xmm5,CONST_BITS
239 psrad xmm7,(16-CONST_BITS) ; psrad xmm7,16 & pslld xmm7,CONST_BITS
240
241 movdqa xmm2,xmm5
242 paddd xmm5,xmm1 ; xmm5=tmp11L
243 psubd xmm2,xmm1 ; xmm2=tmp12L
244 movdqa xmm0,xmm7
245 paddd xmm7,xmm3 ; xmm7=tmp11H
246 psubd xmm0,xmm3 ; xmm0=tmp12H
247
248 movdqa XMMWORD [wk(4)], xmm5 ; wk(4)=tmp11L
249 movdqa XMMWORD [wk(5)], xmm7 ; wk(5)=tmp11H
250 movdqa XMMWORD [wk(6)], xmm2 ; wk(6)=tmp12L
251 movdqa XMMWORD [wk(7)], xmm0 ; wk(7)=tmp12H
252
253 ; -- Odd part
254
255 movdqa xmm4, XMMWORD [XMMBLOCK(1,0,esi,SIZEOF_JCOEF)]
256 movdqa xmm6, XMMWORD [XMMBLOCK(3,0,esi,SIZEOF_JCOEF)]
257 pmullw xmm4, XMMWORD [XMMBLOCK(1,0,edx,SIZEOF_ISLOW_MULT_TYPE)]
258 pmullw xmm6, XMMWORD [XMMBLOCK(3,0,edx,SIZEOF_ISLOW_MULT_TYPE)]
259 movdqa xmm1, XMMWORD [XMMBLOCK(5,0,esi,SIZEOF_JCOEF)]
260 movdqa xmm3, XMMWORD [XMMBLOCK(7,0,esi,SIZEOF_JCOEF)]
261 pmullw xmm1, XMMWORD [XMMBLOCK(5,0,edx,SIZEOF_ISLOW_MULT_TYPE)]
262 pmullw xmm3, XMMWORD [XMMBLOCK(7,0,edx,SIZEOF_ISLOW_MULT_TYPE)]
263
264 movdqa xmm5,xmm6
265 movdqa xmm7,xmm4
266 paddw xmm5,xmm3 ; xmm5=z3
267 paddw xmm7,xmm1 ; xmm7=z4
268
269 ; (Original)
270 ; z5 = (z3 + z4) * 1.175875602;
271 ; z3 = z3 * -1.961570560; z4 = z4 * -0.390180644;
272 ; z3 += z5; z4 += z5;
273 ;
274 ; (This implementation)
275 ; z3 = z3 * (1.175875602 - 1.961570560) + z4 * 1.175875602;
276 ; z4 = z3 * 1.175875602 + z4 * (1.175875602 - 0.390180644);
277
278 movdqa xmm2,xmm5
279 movdqa xmm0,xmm5
280 punpcklwd xmm2,xmm7
281 punpckhwd xmm0,xmm7
282 movdqa xmm5,xmm2
283 movdqa xmm7,xmm0
284 pmaddwd xmm2,[GOTOFF(ebx,PW_MF078_F117)] ; xmm2=z3L
285 pmaddwd xmm0,[GOTOFF(ebx,PW_MF078_F117)] ; xmm0=z3H
286 pmaddwd xmm5,[GOTOFF(ebx,PW_F117_F078)] ; xmm5=z4L
287 pmaddwd xmm7,[GOTOFF(ebx,PW_F117_F078)] ; xmm7=z4H
288
289 movdqa XMMWORD [wk(10)], xmm2 ; wk(10)=z3L
290 movdqa XMMWORD [wk(11)], xmm0 ; wk(11)=z3H
291
292 ; (Original)
293 ; z1 = tmp0 + tmp3; z2 = tmp1 + tmp2;
294 ; tmp0 = tmp0 * 0.298631336; tmp1 = tmp1 * 2.053119869;
295 ; tmp2 = tmp2 * 3.072711026; tmp3 = tmp3 * 1.501321110;
296 ; z1 = z1 * -0.899976223; z2 = z2 * -2.562915447;
297 ; tmp0 += z1 + z3; tmp1 += z2 + z4;
298 ; tmp2 += z2 + z3; tmp3 += z1 + z4;
299 ;
300 ; (This implementation)
301 ; tmp0 = tmp0 * (0.298631336 - 0.899976223) + tmp3 * -0.899976223;
302 ; tmp1 = tmp1 * (2.053119869 - 2.562915447) + tmp2 * -2.562915447;
303 ; tmp2 = tmp1 * -2.562915447 + tmp2 * (3.072711026 - 2.562915447);
304 ; tmp3 = tmp0 * -0.899976223 + tmp3 * (1.501321110 - 0.899976223);
305 ; tmp0 += z3; tmp1 += z4;
306 ; tmp2 += z3; tmp3 += z4;
307
308 movdqa xmm2,xmm3
309 movdqa xmm0,xmm3
310 punpcklwd xmm2,xmm4
311 punpckhwd xmm0,xmm4
312 movdqa xmm3,xmm2
313 movdqa xmm4,xmm0
314 pmaddwd xmm2,[GOTOFF(ebx,PW_MF060_MF089)] ; xmm2=tmp0L
315 pmaddwd xmm0,[GOTOFF(ebx,PW_MF060_MF089)] ; xmm0=tmp0H
316 pmaddwd xmm3,[GOTOFF(ebx,PW_MF089_F060)] ; xmm3=tmp3L
317 pmaddwd xmm4,[GOTOFF(ebx,PW_MF089_F060)] ; xmm4=tmp3H
318
319 paddd xmm2, XMMWORD [wk(10)] ; xmm2=tmp0L
320 paddd xmm0, XMMWORD [wk(11)] ; xmm0=tmp0H
321 paddd xmm3,xmm5 ; xmm3=tmp3L
322 paddd xmm4,xmm7 ; xmm4=tmp3H
323
324 movdqa XMMWORD [wk(8)], xmm2 ; wk(8)=tmp0L
325 movdqa XMMWORD [wk(9)], xmm0 ; wk(9)=tmp0H
326
327 movdqa xmm2,xmm1
328 movdqa xmm0,xmm1
329 punpcklwd xmm2,xmm6
330 punpckhwd xmm0,xmm6
331 movdqa xmm1,xmm2
332 movdqa xmm6,xmm0
333 pmaddwd xmm2,[GOTOFF(ebx,PW_MF050_MF256)] ; xmm2=tmp1L
334 pmaddwd xmm0,[GOTOFF(ebx,PW_MF050_MF256)] ; xmm0=tmp1H
335 pmaddwd xmm1,[GOTOFF(ebx,PW_MF256_F050)] ; xmm1=tmp2L
336 pmaddwd xmm6,[GOTOFF(ebx,PW_MF256_F050)] ; xmm6=tmp2H
337
338 paddd xmm2,xmm5 ; xmm2=tmp1L
339 paddd xmm0,xmm7 ; xmm0=tmp1H
340 paddd xmm1, XMMWORD [wk(10)] ; xmm1=tmp2L
341 paddd xmm6, XMMWORD [wk(11)] ; xmm6=tmp2H
342
343 movdqa XMMWORD [wk(10)], xmm2 ; wk(10)=tmp1L
344 movdqa XMMWORD [wk(11)], xmm0 ; wk(11)=tmp1H
345
346 ; -- Final output stage
347
348 movdqa xmm5, XMMWORD [wk(0)] ; xmm5=tmp10L
349 movdqa xmm7, XMMWORD [wk(1)] ; xmm7=tmp10H
350
351 movdqa xmm2,xmm5
352 movdqa xmm0,xmm7
353 paddd xmm5,xmm3 ; xmm5=data0L
354 paddd xmm7,xmm4 ; xmm7=data0H
355 psubd xmm2,xmm3 ; xmm2=data7L
356 psubd xmm0,xmm4 ; xmm0=data7H
357
358 movdqa xmm3,[GOTOFF(ebx,PD_DESCALE_P1)] ; xmm3=[PD_DESCALE_P1]
359
360 paddd xmm5,xmm3
361 paddd xmm7,xmm3
362 psrad xmm5,DESCALE_P1
363 psrad xmm7,DESCALE_P1
364 paddd xmm2,xmm3
365 paddd xmm0,xmm3
366 psrad xmm2,DESCALE_P1
367 psrad xmm0,DESCALE_P1
368
369 packssdw xmm5,xmm7 ; xmm5=data0=(00 01 02 03 04 05 06 07)
370 packssdw xmm2,xmm0 ; xmm2=data7=(70 71 72 73 74 75 76 77)
371
372 movdqa xmm4, XMMWORD [wk(4)] ; xmm4=tmp11L
373 movdqa xmm3, XMMWORD [wk(5)] ; xmm3=tmp11H
374
375 movdqa xmm7,xmm4
376 movdqa xmm0,xmm3
377 paddd xmm4,xmm1 ; xmm4=data1L
378 paddd xmm3,xmm6 ; xmm3=data1H
379 psubd xmm7,xmm1 ; xmm7=data6L
380 psubd xmm0,xmm6 ; xmm0=data6H
381
382 movdqa xmm1,[GOTOFF(ebx,PD_DESCALE_P1)] ; xmm1=[PD_DESCALE_P1]
383
384 paddd xmm4,xmm1
385 paddd xmm3,xmm1
386 psrad xmm4,DESCALE_P1
387 psrad xmm3,DESCALE_P1
388 paddd xmm7,xmm1
389 paddd xmm0,xmm1
390 psrad xmm7,DESCALE_P1
391 psrad xmm0,DESCALE_P1
392
393 packssdw xmm4,xmm3 ; xmm4=data1=(10 11 12 13 14 15 16 17)
394 packssdw xmm7,xmm0 ; xmm7=data6=(60 61 62 63 64 65 66 67)
395
396 movdqa xmm6,xmm5 ; transpose coefficients(phase 1)
397 punpcklwd xmm5,xmm4 ; xmm5=(00 10 01 11 02 12 03 13)
398 punpckhwd xmm6,xmm4 ; xmm6=(04 14 05 15 06 16 07 17)
399 movdqa xmm1,xmm7 ; transpose coefficients(phase 1)
400 punpcklwd xmm7,xmm2 ; xmm7=(60 70 61 71 62 72 63 73)
401 punpckhwd xmm1,xmm2 ; xmm1=(64 74 65 75 66 76 67 77)
402
403 movdqa xmm3, XMMWORD [wk(6)] ; xmm3=tmp12L
404 movdqa xmm0, XMMWORD [wk(7)] ; xmm0=tmp12H
405 movdqa xmm4, XMMWORD [wk(10)] ; xmm4=tmp1L
406 movdqa xmm2, XMMWORD [wk(11)] ; xmm2=tmp1H
407
408 movdqa XMMWORD [wk(0)], xmm5 ; wk(0)=(00 10 01 11 02 12 03 13)
409 movdqa XMMWORD [wk(1)], xmm6 ; wk(1)=(04 14 05 15 06 16 07 17)
410 movdqa XMMWORD [wk(4)], xmm7 ; wk(4)=(60 70 61 71 62 72 63 73)
411 movdqa XMMWORD [wk(5)], xmm1 ; wk(5)=(64 74 65 75 66 76 67 77)
412
413 movdqa xmm5,xmm3
414 movdqa xmm6,xmm0
415 paddd xmm3,xmm4 ; xmm3=data2L
416 paddd xmm0,xmm2 ; xmm0=data2H
417 psubd xmm5,xmm4 ; xmm5=data5L
418 psubd xmm6,xmm2 ; xmm6=data5H
419
420 movdqa xmm7,[GOTOFF(ebx,PD_DESCALE_P1)] ; xmm7=[PD_DESCALE_P1]
421
422 paddd xmm3,xmm7
423 paddd xmm0,xmm7
424 psrad xmm3,DESCALE_P1
425 psrad xmm0,DESCALE_P1
426 paddd xmm5,xmm7
427 paddd xmm6,xmm7
428 psrad xmm5,DESCALE_P1
429 psrad xmm6,DESCALE_P1
430
431 packssdw xmm3,xmm0 ; xmm3=data2=(20 21 22 23 24 25 26 27)
432 packssdw xmm5,xmm6 ; xmm5=data5=(50 51 52 53 54 55 56 57)
433
434 movdqa xmm1, XMMWORD [wk(2)] ; xmm1=tmp13L
435 movdqa xmm4, XMMWORD [wk(3)] ; xmm4=tmp13H
436 movdqa xmm2, XMMWORD [wk(8)] ; xmm2=tmp0L
437 movdqa xmm7, XMMWORD [wk(9)] ; xmm7=tmp0H
438
439 movdqa xmm0,xmm1
440 movdqa xmm6,xmm4
441 paddd xmm1,xmm2 ; xmm1=data3L
442 paddd xmm4,xmm7 ; xmm4=data3H
443 psubd xmm0,xmm2 ; xmm0=data4L
444 psubd xmm6,xmm7 ; xmm6=data4H
445
446 movdqa xmm2,[GOTOFF(ebx,PD_DESCALE_P1)] ; xmm2=[PD_DESCALE_P1]
447
448 paddd xmm1,xmm2
449 paddd xmm4,xmm2
450 psrad xmm1,DESCALE_P1
451 psrad xmm4,DESCALE_P1
452 paddd xmm0,xmm2
453 paddd xmm6,xmm2
454 psrad xmm0,DESCALE_P1
455 psrad xmm6,DESCALE_P1
456
457 packssdw xmm1,xmm4 ; xmm1=data3=(30 31 32 33 34 35 36 37)
458 packssdw xmm0,xmm6 ; xmm0=data4=(40 41 42 43 44 45 46 47)
459
460 movdqa xmm7, XMMWORD [wk(0)] ; xmm7=(00 10 01 11 02 12 03 13)
461 movdqa xmm2, XMMWORD [wk(1)] ; xmm2=(04 14 05 15 06 16 07 17)
462
463 movdqa xmm4,xmm3 ; transpose coefficients(phase 1)
464 punpcklwd xmm3,xmm1 ; xmm3=(20 30 21 31 22 32 23 33)
465 punpckhwd xmm4,xmm1 ; xmm4=(24 34 25 35 26 36 27 37)
466 movdqa xmm6,xmm0 ; transpose coefficients(phase 1)
467 punpcklwd xmm0,xmm5 ; xmm0=(40 50 41 51 42 52 43 53)
468 punpckhwd xmm6,xmm5 ; xmm6=(44 54 45 55 46 56 47 57)
469
470 movdqa xmm1,xmm7 ; transpose coefficients(phase 2)
471 punpckldq xmm7,xmm3 ; xmm7=(00 10 20 30 01 11 21 31)
472 punpckhdq xmm1,xmm3 ; xmm1=(02 12 22 32 03 13 23 33)
473 movdqa xmm5,xmm2 ; transpose coefficients(phase 2)
474 punpckldq xmm2,xmm4 ; xmm2=(04 14 24 34 05 15 25 35)
475 punpckhdq xmm5,xmm4 ; xmm5=(06 16 26 36 07 17 27 37)
476
477 movdqa xmm3, XMMWORD [wk(4)] ; xmm3=(60 70 61 71 62 72 63 73)
478 movdqa xmm4, XMMWORD [wk(5)] ; xmm4=(64 74 65 75 66 76 67 77)
479
480 movdqa XMMWORD [wk(6)], xmm2 ; wk(6)=(04 14 24 34 05 15 25 35)
481 movdqa XMMWORD [wk(7)], xmm5 ; wk(7)=(06 16 26 36 07 17 27 37)
482
483 movdqa xmm2,xmm0 ; transpose coefficients(phase 2)
484 punpckldq xmm0,xmm3 ; xmm0=(40 50 60 70 41 51 61 71)
485 punpckhdq xmm2,xmm3 ; xmm2=(42 52 62 72 43 53 63 73)
486 movdqa xmm5,xmm6 ; transpose coefficients(phase 2)
487 punpckldq xmm6,xmm4 ; xmm6=(44 54 64 74 45 55 65 75)
488 punpckhdq xmm5,xmm4 ; xmm5=(46 56 66 76 47 57 67 77)
489
490 movdqa xmm3,xmm7 ; transpose coefficients(phase 3)
491 punpcklqdq xmm7,xmm0 ; xmm7=col0=(00 10 20 30 40 50 60 70)
492 punpckhqdq xmm3,xmm0 ; xmm3=col1=(01 11 21 31 41 51 61 71)
493 movdqa xmm4,xmm1 ; transpose coefficients(phase 3)
494 punpcklqdq xmm1,xmm2 ; xmm1=col2=(02 12 22 32 42 52 62 72)
495 punpckhqdq xmm4,xmm2 ; xmm4=col3=(03 13 23 33 43 53 63 73)
496
497 movdqa xmm0, XMMWORD [wk(6)] ; xmm0=(04 14 24 34 05 15 25 35)
498 movdqa xmm2, XMMWORD [wk(7)] ; xmm2=(06 16 26 36 07 17 27 37)
499
500 movdqa XMMWORD [wk(8)], xmm3 ; wk(8)=col1
501 movdqa XMMWORD [wk(9)], xmm4 ; wk(9)=col3
502
503 movdqa xmm3,xmm0 ; transpose coefficients(phase 3)
504 punpcklqdq xmm0,xmm6 ; xmm0=col4=(04 14 24 34 44 54 64 74)
505 punpckhqdq xmm3,xmm6 ; xmm3=col5=(05 15 25 35 45 55 65 75)
506 movdqa xmm4,xmm2 ; transpose coefficients(phase 3)
507 punpcklqdq xmm2,xmm5 ; xmm2=col6=(06 16 26 36 46 56 66 76)
508 punpckhqdq xmm4,xmm5 ; xmm4=col7=(07 17 27 37 47 57 67 77)
509
510 movdqa XMMWORD [wk(10)], xmm3 ; wk(10)=col5
511 movdqa XMMWORD [wk(11)], xmm4 ; wk(11)=col7
512 .column_end:
513
514 ; -- Prefetch the next coefficient block
515
516 prefetchnta [esi + DCTSIZE2*SIZEOF_JCOEF + 0*32]
517 prefetchnta [esi + DCTSIZE2*SIZEOF_JCOEF + 1*32]
518 prefetchnta [esi + DCTSIZE2*SIZEOF_JCOEF + 2*32]
519 prefetchnta [esi + DCTSIZE2*SIZEOF_JCOEF + 3*32]
520
521 ; ---- Pass 2: process rows from work array, store into output array.
522
523 mov eax, [original_ebp]
524 mov edi, JSAMPARRAY [output_buf(eax)] ; (JSAMPROW *)
525 mov eax, JDIMENSION [output_col(eax)]
526
527 ; -- Even part
528
529 ; xmm7=col0, xmm1=col2, xmm0=col4, xmm2=col6
530
531 ; (Original)
532 ; z1 = (z2 + z3) * 0.541196100;
533 ; tmp2 = z1 + z3 * -1.847759065;
534 ; tmp3 = z1 + z2 * 0.765366865;
535 ;
536 ; (This implementation)
537 ; tmp2 = z2 * 0.541196100 + z3 * (0.541196100 - 1.847759065);
538 ; tmp3 = z2 * (0.541196100 + 0.765366865) + z3 * 0.541196100;
539
540 movdqa xmm6,xmm1 ; xmm1=in2=z2
541 movdqa xmm5,xmm1
542 punpcklwd xmm6,xmm2 ; xmm2=in6=z3
543 punpckhwd xmm5,xmm2
544 movdqa xmm1,xmm6
545 movdqa xmm2,xmm5
546 pmaddwd xmm6,[GOTOFF(ebx,PW_F130_F054)] ; xmm6=tmp3L
547 pmaddwd xmm5,[GOTOFF(ebx,PW_F130_F054)] ; xmm5=tmp3H
548 pmaddwd xmm1,[GOTOFF(ebx,PW_F054_MF130)] ; xmm1=tmp2L
549 pmaddwd xmm2,[GOTOFF(ebx,PW_F054_MF130)] ; xmm2=tmp2H
550
551 movdqa xmm3,xmm7
552 paddw xmm7,xmm0 ; xmm7=in0+in4
553 psubw xmm3,xmm0 ; xmm3=in0-in4
554
555 pxor xmm4,xmm4
556 pxor xmm0,xmm0
557 punpcklwd xmm4,xmm7 ; xmm4=tmp0L
558 punpckhwd xmm0,xmm7 ; xmm0=tmp0H
559 psrad xmm4,(16-CONST_BITS) ; psrad xmm4,16 & pslld xmm4,CONST_BITS
560 psrad xmm0,(16-CONST_BITS) ; psrad xmm0,16 & pslld xmm0,CONST_BITS
561
562 movdqa xmm7,xmm4
563 paddd xmm4,xmm6 ; xmm4=tmp10L
564 psubd xmm7,xmm6 ; xmm7=tmp13L
565 movdqa xmm6,xmm0
566 paddd xmm0,xmm5 ; xmm0=tmp10H
567 psubd xmm6,xmm5 ; xmm6=tmp13H
568
569 movdqa XMMWORD [wk(0)], xmm4 ; wk(0)=tmp10L
570 movdqa XMMWORD [wk(1)], xmm0 ; wk(1)=tmp10H
571 movdqa XMMWORD [wk(2)], xmm7 ; wk(2)=tmp13L
572 movdqa XMMWORD [wk(3)], xmm6 ; wk(3)=tmp13H
573
574 pxor xmm5,xmm5
575 pxor xmm4,xmm4
576 punpcklwd xmm5,xmm3 ; xmm5=tmp1L
577 punpckhwd xmm4,xmm3 ; xmm4=tmp1H
578 psrad xmm5,(16-CONST_BITS) ; psrad xmm5,16 & pslld xmm5,CONST_BITS
579 psrad xmm4,(16-CONST_BITS) ; psrad xmm4,16 & pslld xmm4,CONST_BITS
580
581 movdqa xmm0,xmm5
582 paddd xmm5,xmm1 ; xmm5=tmp11L
583 psubd xmm0,xmm1 ; xmm0=tmp12L
584 movdqa xmm7,xmm4
585 paddd xmm4,xmm2 ; xmm4=tmp11H
586 psubd xmm7,xmm2 ; xmm7=tmp12H
587
588 movdqa XMMWORD [wk(4)], xmm5 ; wk(4)=tmp11L
589 movdqa XMMWORD [wk(5)], xmm4 ; wk(5)=tmp11H
590 movdqa XMMWORD [wk(6)], xmm0 ; wk(6)=tmp12L
591 movdqa XMMWORD [wk(7)], xmm7 ; wk(7)=tmp12H
592
593 ; -- Odd part
594
595 movdqa xmm6, XMMWORD [wk(9)] ; xmm6=col3
596 movdqa xmm3, XMMWORD [wk(8)] ; xmm3=col1
597 movdqa xmm1, XMMWORD [wk(11)] ; xmm1=col7
598 movdqa xmm2, XMMWORD [wk(10)] ; xmm2=col5
599
600 movdqa xmm5,xmm6
601 movdqa xmm4,xmm3
602 paddw xmm5,xmm1 ; xmm5=z3
603 paddw xmm4,xmm2 ; xmm4=z4
604
605 ; (Original)
606 ; z5 = (z3 + z4) * 1.175875602;
607 ; z3 = z3 * -1.961570560; z4 = z4 * -0.390180644;
608 ; z3 += z5; z4 += z5;
609 ;
610 ; (This implementation)
611 ; z3 = z3 * (1.175875602 - 1.961570560) + z4 * 1.175875602;
612 ; z4 = z3 * 1.175875602 + z4 * (1.175875602 - 0.390180644);
613
614 movdqa xmm0,xmm5
615 movdqa xmm7,xmm5
616 punpcklwd xmm0,xmm4
617 punpckhwd xmm7,xmm4
618 movdqa xmm5,xmm0
619 movdqa xmm4,xmm7
620 pmaddwd xmm0,[GOTOFF(ebx,PW_MF078_F117)] ; xmm0=z3L
621 pmaddwd xmm7,[GOTOFF(ebx,PW_MF078_F117)] ; xmm7=z3H
622 pmaddwd xmm5,[GOTOFF(ebx,PW_F117_F078)] ; xmm5=z4L
623 pmaddwd xmm4,[GOTOFF(ebx,PW_F117_F078)] ; xmm4=z4H
624
625 movdqa XMMWORD [wk(10)], xmm0 ; wk(10)=z3L
626 movdqa XMMWORD [wk(11)], xmm7 ; wk(11)=z3H
627
628 ; (Original)
629 ; z1 = tmp0 + tmp3; z2 = tmp1 + tmp2;
630 ; tmp0 = tmp0 * 0.298631336; tmp1 = tmp1 * 2.053119869;
631 ; tmp2 = tmp2 * 3.072711026; tmp3 = tmp3 * 1.501321110;
632 ; z1 = z1 * -0.899976223; z2 = z2 * -2.562915447;
633 ; tmp0 += z1 + z3; tmp1 += z2 + z4;
634 ; tmp2 += z2 + z3; tmp3 += z1 + z4;
635 ;
636 ; (This implementation)
637 ; tmp0 = tmp0 * (0.298631336 - 0.899976223) + tmp3 * -0.899976223;
638 ; tmp1 = tmp1 * (2.053119869 - 2.562915447) + tmp2 * -2.562915447;
639 ; tmp2 = tmp1 * -2.562915447 + tmp2 * (3.072711026 - 2.562915447);
640 ; tmp3 = tmp0 * -0.899976223 + tmp3 * (1.501321110 - 0.899976223);
641 ; tmp0 += z3; tmp1 += z4;
642 ; tmp2 += z3; tmp3 += z4;
643
644 movdqa xmm0,xmm1
645 movdqa xmm7,xmm1
646 punpcklwd xmm0,xmm3
647 punpckhwd xmm7,xmm3
648 movdqa xmm1,xmm0
649 movdqa xmm3,xmm7
650 pmaddwd xmm0,[GOTOFF(ebx,PW_MF060_MF089)] ; xmm0=tmp0L
651 pmaddwd xmm7,[GOTOFF(ebx,PW_MF060_MF089)] ; xmm7=tmp0H
652 pmaddwd xmm1,[GOTOFF(ebx,PW_MF089_F060)] ; xmm1=tmp3L
653 pmaddwd xmm3,[GOTOFF(ebx,PW_MF089_F060)] ; xmm3=tmp3H
654
655 paddd xmm0, XMMWORD [wk(10)] ; xmm0=tmp0L
656 paddd xmm7, XMMWORD [wk(11)] ; xmm7=tmp0H
657 paddd xmm1,xmm5 ; xmm1=tmp3L
658 paddd xmm3,xmm4 ; xmm3=tmp3H
659
660 movdqa XMMWORD [wk(8)], xmm0 ; wk(8)=tmp0L
661 movdqa XMMWORD [wk(9)], xmm7 ; wk(9)=tmp0H
662
663 movdqa xmm0,xmm2
664 movdqa xmm7,xmm2
665 punpcklwd xmm0,xmm6
666 punpckhwd xmm7,xmm6
667 movdqa xmm2,xmm0
668 movdqa xmm6,xmm7
669 pmaddwd xmm0,[GOTOFF(ebx,PW_MF050_MF256)] ; xmm0=tmp1L
670 pmaddwd xmm7,[GOTOFF(ebx,PW_MF050_MF256)] ; xmm7=tmp1H
671 pmaddwd xmm2,[GOTOFF(ebx,PW_MF256_F050)] ; xmm2=tmp2L
672 pmaddwd xmm6,[GOTOFF(ebx,PW_MF256_F050)] ; xmm6=tmp2H
673
674 paddd xmm0,xmm5 ; xmm0=tmp1L
675 paddd xmm7,xmm4 ; xmm7=tmp1H
676 paddd xmm2, XMMWORD [wk(10)] ; xmm2=tmp2L
677 paddd xmm6, XMMWORD [wk(11)] ; xmm6=tmp2H
678
679 movdqa XMMWORD [wk(10)], xmm0 ; wk(10)=tmp1L
680 movdqa XMMWORD [wk(11)], xmm7 ; wk(11)=tmp1H
681
682 ; -- Final output stage
683
684 movdqa xmm5, XMMWORD [wk(0)] ; xmm5=tmp10L
685 movdqa xmm4, XMMWORD [wk(1)] ; xmm4=tmp10H
686
687 movdqa xmm0,xmm5
688 movdqa xmm7,xmm4
689 paddd xmm5,xmm1 ; xmm5=data0L
690 paddd xmm4,xmm3 ; xmm4=data0H
691 psubd xmm0,xmm1 ; xmm0=data7L
692 psubd xmm7,xmm3 ; xmm7=data7H
693
694 movdqa xmm1,[GOTOFF(ebx,PD_DESCALE_P2)] ; xmm1=[PD_DESCALE_P2]
695
696 paddd xmm5,xmm1
697 paddd xmm4,xmm1
698 psrad xmm5,DESCALE_P2
699 psrad xmm4,DESCALE_P2
700 paddd xmm0,xmm1
701 paddd xmm7,xmm1
702 psrad xmm0,DESCALE_P2
703 psrad xmm7,DESCALE_P2
704
705 packssdw xmm5,xmm4 ; xmm5=data0=(00 10 20 30 40 50 60 70)
706 packssdw xmm0,xmm7 ; xmm0=data7=(07 17 27 37 47 57 67 77)
707
708 movdqa xmm3, XMMWORD [wk(4)] ; xmm3=tmp11L
709 movdqa xmm1, XMMWORD [wk(5)] ; xmm1=tmp11H
710
711 movdqa xmm4,xmm3
712 movdqa xmm7,xmm1
713 paddd xmm3,xmm2 ; xmm3=data1L
714 paddd xmm1,xmm6 ; xmm1=data1H
715 psubd xmm4,xmm2 ; xmm4=data6L
716 psubd xmm7,xmm6 ; xmm7=data6H
717
718 movdqa xmm2,[GOTOFF(ebx,PD_DESCALE_P2)] ; xmm2=[PD_DESCALE_P2]
719
720 paddd xmm3,xmm2
721 paddd xmm1,xmm2
722 psrad xmm3,DESCALE_P2
723 psrad xmm1,DESCALE_P2
724 paddd xmm4,xmm2
725 paddd xmm7,xmm2
726 psrad xmm4,DESCALE_P2
727 psrad xmm7,DESCALE_P2
728
729 packssdw xmm3,xmm1 ; xmm3=data1=(01 11 21 31 41 51 61 71)
730 packssdw xmm4,xmm7 ; xmm4=data6=(06 16 26 36 46 56 66 76)
731
732 packsswb xmm5,xmm4 ; xmm5=(00 10 20 30 40 50 60 70 06 16 26 36 46 56 66 76)
733 packsswb xmm3,xmm0 ; xmm3=(01 11 21 31 41 51 61 71 07 17 27 37 47 57 67 77)
734
735 movdqa xmm6, XMMWORD [wk(6)] ; xmm6=tmp12L
736 movdqa xmm2, XMMWORD [wk(7)] ; xmm2=tmp12H
737 movdqa xmm1, XMMWORD [wk(10)] ; xmm1=tmp1L
738 movdqa xmm7, XMMWORD [wk(11)] ; xmm7=tmp1H
739
740 movdqa XMMWORD [wk(0)], xmm5 ; wk(0)=(00 10 20 30 40 50 60 70 06 16 26 36 46 56 66 76)
741 movdqa XMMWORD [wk(1)], xmm3 ; wk(1)=(01 11 21 31 41 51 61 71 07 17 27 37 47 57 67 77)
742
743 movdqa xmm4,xmm6
744 movdqa xmm0,xmm2
745 paddd xmm6,xmm1 ; xmm6=data2L
746 paddd xmm2,xmm7 ; xmm2=data2H
747 psubd xmm4,xmm1 ; xmm4=data5L
748 psubd xmm0,xmm7 ; xmm0=data5H
749
750 movdqa xmm5,[GOTOFF(ebx,PD_DESCALE_P2)] ; xmm5=[PD_DESCALE_P2]
751
752 paddd xmm6,xmm5
753 paddd xmm2,xmm5
754 psrad xmm6,DESCALE_P2
755 psrad xmm2,DESCALE_P2
756 paddd xmm4,xmm5
757 paddd xmm0,xmm5
758 psrad xmm4,DESCALE_P2
759 psrad xmm0,DESCALE_P2
760
761 packssdw xmm6,xmm2 ; xmm6=data2=(02 12 22 32 42 52 62 72)
762 packssdw xmm4,xmm0 ; xmm4=data5=(05 15 25 35 45 55 65 75)
763
764 movdqa xmm3, XMMWORD [wk(2)] ; xmm3=tmp13L
765 movdqa xmm1, XMMWORD [wk(3)] ; xmm1=tmp13H
766 movdqa xmm7, XMMWORD [wk(8)] ; xmm7=tmp0L
767 movdqa xmm5, XMMWORD [wk(9)] ; xmm5=tmp0H
768
769 movdqa xmm2,xmm3
770 movdqa xmm0,xmm1
771 paddd xmm3,xmm7 ; xmm3=data3L
772 paddd xmm1,xmm5 ; xmm1=data3H
773 psubd xmm2,xmm7 ; xmm2=data4L
774 psubd xmm0,xmm5 ; xmm0=data4H
775
776 movdqa xmm7,[GOTOFF(ebx,PD_DESCALE_P2)] ; xmm7=[PD_DESCALE_P2]
777
778 paddd xmm3,xmm7
779 paddd xmm1,xmm7
780 psrad xmm3,DESCALE_P2
781 psrad xmm1,DESCALE_P2
782 paddd xmm2,xmm7
783 paddd xmm0,xmm7
784 psrad xmm2,DESCALE_P2
785 psrad xmm0,DESCALE_P2
786
787 movdqa xmm5,[GOTOFF(ebx,PB_CENTERJSAMP)] ; xmm5=[PB_CENTERJSAMP]
788
789 packssdw xmm3,xmm1 ; xmm3=data3=(03 13 23 33 43 53 63 73)
790 packssdw xmm2,xmm0 ; xmm2=data4=(04 14 24 34 44 54 64 74)
791
792 movdqa xmm7, XMMWORD [wk(0)] ; xmm7=(00 10 20 30 40 50 60 70 06 16 26 36 46 56 66 76)
793 movdqa xmm1, XMMWORD [wk(1)] ; xmm1=(01 11 21 31 41 51 61 71 07 17 27 37 47 57 67 77)
794
795 packsswb xmm6,xmm2 ; xmm6=(02 12 22 32 42 52 62 72 04 14 24 34 44 54 64 74)
796 packsswb xmm3,xmm4 ; xmm3=(03 13 23 33 43 53 63 73 05 15 25 35 45 55 65 75)
797
798 paddb xmm7,xmm5
799 paddb xmm1,xmm5
800 paddb xmm6,xmm5
801 paddb xmm3,xmm5
802
803 movdqa xmm0,xmm7 ; transpose coefficients(phase 1)
804 punpcklbw xmm7,xmm1 ; xmm7=(00 01 10 11 20 21 30 31 40 41 50 51 60 61 70 71)
805 punpckhbw xmm0,xmm1 ; xmm0=(06 07 16 17 26 27 36 37 46 47 56 57 66 67 76 77)
806 movdqa xmm2,xmm6 ; transpose coefficients(phase 1)
807 punpcklbw xmm6,xmm3 ; xmm6=(02 03 12 13 22 23 32 33 42 43 52 53 62 63 72 73)
808 punpckhbw xmm2,xmm3 ; xmm2=(04 05 14 15 24 25 34 35 44 45 54 55 64 65 74 75)
809
810 movdqa xmm4,xmm7 ; transpose coefficients(phase 2)
811 punpcklwd xmm7,xmm6 ; xmm7=(00 01 02 03 10 11 12 13 20 21 22 23 30 31 32 33)
812 punpckhwd xmm4,xmm6 ; xmm4=(40 41 42 43 50 51 52 53 60 61 62 63 70 71 72 73)
813 movdqa xmm5,xmm2 ; transpose coefficients(phase 2)
814 punpcklwd xmm2,xmm0 ; xmm2=(04 05 06 07 14 15 16 17 24 25 26 27 34 35 36 37)
815 punpckhwd xmm5,xmm0 ; xmm5=(44 45 46 47 54 55 56 57 64 65 66 67 74 75 76 77)
816
817 movdqa xmm1,xmm7 ; transpose coefficients(phase 3)
818 punpckldq xmm7,xmm2 ; xmm7=(00 01 02 03 04 05 06 07 10 11 12 13 14 15 16 17)
819 punpckhdq xmm1,xmm2 ; xmm1=(20 21 22 23 24 25 26 27 30 31 32 33 34 35 36 37)
820 movdqa xmm3,xmm4 ; transpose coefficients(phase 3)
821 punpckldq xmm4,xmm5 ; xmm4=(40 41 42 43 44 45 46 47 50 51 52 53 54 55 56 57)
822 punpckhdq xmm3,xmm5 ; xmm3=(60 61 62 63 64 65 66 67 70 71 72 73 74 75 76 77)
823
824 pshufd xmm6,xmm7,0x4E ; xmm6=(10 11 12 13 14 15 16 17 00 01 02 03 04 05 06 07)
825 pshufd xmm0,xmm1,0x4E ; xmm0=(30 31 32 33 34 35 36 37 20 21 22 23 24 25 26 27)
826 pshufd xmm2,xmm4,0x4E ; xmm2=(50 51 52 53 54 55 56 57 40 41 42 43 44 45 46 47)
827 pshufd xmm5,xmm3,0x4E ; xmm5=(70 71 72 73 74 75 76 77 60 61 62 63 64 65 66 67)
828
829 mov edx, JSAMPROW [edi+0*SIZEOF_JSAMPROW]
830 mov esi, JSAMPROW [edi+2*SIZEOF_JSAMPROW]
831 movq XMM_MMWORD [edx+eax*SIZEOF_JSAMPLE], xmm7
832 movq XMM_MMWORD [esi+eax*SIZEOF_JSAMPLE], xmm1
833 mov edx, JSAMPROW [edi+4*SIZEOF_JSAMPROW]
834 mov esi, JSAMPROW [edi+6*SIZEOF_JSAMPROW]
835 movq XMM_MMWORD [edx+eax*SIZEOF_JSAMPLE], xmm4
836 movq XMM_MMWORD [esi+eax*SIZEOF_JSAMPLE], xmm3
837
838 mov edx, JSAMPROW [edi+1*SIZEOF_JSAMPROW]
839 mov esi, JSAMPROW [edi+3*SIZEOF_JSAMPROW]
840 movq XMM_MMWORD [edx+eax*SIZEOF_JSAMPLE], xmm6
841 movq XMM_MMWORD [esi+eax*SIZEOF_JSAMPLE], xmm0
842 mov edx, JSAMPROW [edi+5*SIZEOF_JSAMPROW]
843 mov esi, JSAMPROW [edi+7*SIZEOF_JSAMPROW]
844 movq XMM_MMWORD [edx+eax*SIZEOF_JSAMPLE], xmm2
845 movq XMM_MMWORD [esi+eax*SIZEOF_JSAMPLE], xmm5
846
847 pop edi
848 pop esi
849 ; pop edx ; need not be preserved
850 ; pop ecx ; unused
851 poppic ebx
852 mov esp,ebp ; esp <- aligned ebp
853 pop esp ; esp <- original ebp
854 pop ebp
855 ret
856
857 ; For some reason, the OS X linker does not honor the request to align the
858 ; segment unless we do this.
859 align 16

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