2 ; jiss2int.asm - accurate integer IDCT (SSE2)
4 ; Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB
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
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
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
24 %include "jsimdext.inc"
27 ; --------------------------------------------------------------------------
32 %define DESCALE_P1
(CONST_BITS
-PASS1_BITS
)
33 %define DESCALE_P2
(CONST_BITS
+PASS1_BITS
+3)
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)
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)
65 ; --------------------------------------------------------------------------
69 global EXTN
(jconst_idct_islow_sse2
)
71 EXTN
(jconst_idct_islow_sse2
):
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
87 ; --------------------------------------------------------------------------
91 ; Perform dequantization and inverse DCT on one block of coefficients.
94 ; jsimd_idct_islow_sse2 (void * dct_table, JCOEFPTR coef_block,
95 ; JSAMPARRAY output_buf, JDIMENSION output_col)
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
103 %define original_ebp
ebp+0
104 %define wk
(i
) ebp-(WK_NUM
-(i
))*SIZEOF_XMMWORD
; xmmword wk[WK_NUM]
108 global EXTN
(jsimd_idct_islow_sse2
)
110 EXTN
(jsimd_idct_islow_sse2
):
112 mov eax,esp ; eax = original ebp
114 and esp, byte (-SIZEOF_XMMWORD
) ; align to 128 bits
116 mov ebp,esp ; ebp = aligned ebp
120 ; push edx ; need not be preserved
124 get_GOT
ebx ; get GOT address
126 ; ---- Pass 1: process columns from input.
128 ; mov eax, [original_ebp]
129 mov edx, POINTER
[dct_table
(eax)] ; quantptr
130 mov esi, JCOEFPTR
[coef_block
(eax)] ; inptr
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
)]
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
)]
151 ; -- AC terms all zero
153 movdqa xmm5
, XMMWORD
[XMMBLOCK
(0,0,esi,SIZEOF_JCOEF
)]
154 pmullw xmm5
, XMMWORD
[XMMBLOCK
(0,0,edx,SIZEOF_ISLOW_MULT_TYPE
)]
156 psllw xmm5
,PASS1_BITS
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)
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)
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
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
)]
192 ; z1 = (z2 + z3) * 0.541196100;
193 ; tmp2 = z1 + z3 * -1.847759065;
194 ; tmp3 = z1 + z2 * 0.765366865;
196 ; (This implementation)
197 ; tmp2 = z2 * 0.541196100 + z3 * (0.541196100 - 1.847759065);
198 ; tmp3 = z2 * (0.541196100 + 0.765366865) + z3 * 0.541196100;
200 movdqa xmm4
,xmm1
; xmm1=in2=z2
202 punpcklwd xmm4
,xmm3
; xmm3=in6=z3
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
212 paddw xmm0
,xmm2
; xmm0=in0+in4
213 psubw xmm6
,xmm2
; xmm6=in0-in4
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
223 paddd xmm7
,xmm4
; xmm7=tmp10L
224 psubd xmm0
,xmm4
; xmm0=tmp13L
226 paddd xmm2
,xmm5
; xmm2=tmp10H
227 psubd xmm4
,xmm5
; xmm4=tmp13H
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
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
242 paddd xmm5
,xmm1
; xmm5=tmp11L
243 psubd xmm2
,xmm1
; xmm2=tmp12L
245 paddd xmm7
,xmm3
; xmm7=tmp11H
246 psubd xmm0
,xmm3
; xmm0=tmp12H
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
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
)]
266 paddw xmm5
,xmm3
; xmm5=z3
267 paddw xmm7
,xmm1
; xmm7=z4
270 ; z5 = (z3 + z4) * 1.175875602;
271 ; z3 = z3 * -1.961570560; z4 = z4 * -0.390180644;
272 ; z3 += z5; z4 += z5;
274 ; (This implementation)
275 ; z3 = z3 * (1.175875602 - 1.961570560) + z4 * 1.175875602;
276 ; z4 = z3 * 1.175875602 + z4 * (1.175875602 - 0.390180644);
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
289 movdqa XMMWORD
[wk
(10)], xmm2
; wk(10)=z3L
290 movdqa XMMWORD
[wk
(11)], xmm0
; wk(11)=z3H
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;
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;
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
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
324 movdqa XMMWORD
[wk
(8)], xmm2
; wk(8)=tmp0L
325 movdqa XMMWORD
[wk
(9)], xmm0
; wk(9)=tmp0H
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
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
343 movdqa XMMWORD
[wk
(10)], xmm2
; wk(10)=tmp1L
344 movdqa XMMWORD
[wk
(11)], xmm0
; wk(11)=tmp1H
346 ; -- Final output stage
348 movdqa xmm5
, XMMWORD
[wk
(0)] ; xmm5=tmp10L
349 movdqa xmm7
, XMMWORD
[wk
(1)] ; xmm7=tmp10H
353 paddd xmm5
,xmm3
; xmm5=data0L
354 paddd xmm7
,xmm4
; xmm7=data0H
355 psubd xmm2
,xmm3
; xmm2=data7L
356 psubd xmm0
,xmm4
; xmm0=data7H
358 movdqa xmm3
,[GOTOFF
(ebx,PD_DESCALE_P1
)] ; xmm3=[PD_DESCALE_P1]
362 psrad xmm5
,DESCALE_P1
363 psrad xmm7
,DESCALE_P1
366 psrad xmm2
,DESCALE_P1
367 psrad xmm0
,DESCALE_P1
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)
372 movdqa xmm4
, XMMWORD
[wk
(4)] ; xmm4=tmp11L
373 movdqa xmm3
, XMMWORD
[wk
(5)] ; xmm3=tmp11H
377 paddd xmm4
,xmm1
; xmm4=data1L
378 paddd xmm3
,xmm6
; xmm3=data1H
379 psubd xmm7
,xmm1
; xmm7=data6L
380 psubd xmm0
,xmm6
; xmm0=data6H
382 movdqa xmm1
,[GOTOFF
(ebx,PD_DESCALE_P1
)] ; xmm1=[PD_DESCALE_P1]
386 psrad xmm4
,DESCALE_P1
387 psrad xmm3
,DESCALE_P1
390 psrad xmm7
,DESCALE_P1
391 psrad xmm0
,DESCALE_P1
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)
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)
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
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)
415 paddd xmm3
,xmm4
; xmm3=data2L
416 paddd xmm0
,xmm2
; xmm0=data2H
417 psubd xmm5
,xmm4
; xmm5=data5L
418 psubd xmm6
,xmm2
; xmm6=data5H
420 movdqa xmm7
,[GOTOFF
(ebx,PD_DESCALE_P1
)] ; xmm7=[PD_DESCALE_P1]
424 psrad xmm3
,DESCALE_P1
425 psrad xmm0
,DESCALE_P1
428 psrad xmm5
,DESCALE_P1
429 psrad xmm6
,DESCALE_P1
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)
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
441 paddd xmm1
,xmm2
; xmm1=data3L
442 paddd xmm4
,xmm7
; xmm4=data3H
443 psubd xmm0
,xmm2
; xmm0=data4L
444 psubd xmm6
,xmm7
; xmm6=data4H
446 movdqa xmm2
,[GOTOFF
(ebx,PD_DESCALE_P1
)] ; xmm2=[PD_DESCALE_P1]
450 psrad xmm1
,DESCALE_P1
451 psrad xmm4
,DESCALE_P1
454 psrad xmm0
,DESCALE_P1
455 psrad xmm6
,DESCALE_P1
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)
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)
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)
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)
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)
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)
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)
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)
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)
500 movdqa XMMWORD
[wk
(8)], xmm3
; wk(8)=col1
501 movdqa XMMWORD
[wk
(9)], xmm4
; wk(9)=col3
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)
510 movdqa XMMWORD
[wk
(10)], xmm3
; wk(10)=col5
511 movdqa XMMWORD
[wk
(11)], xmm4
; wk(11)=col7
514 ; -- Prefetch the next coefficient block
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]
521 ; ---- Pass 2: process rows from work array, store into output array.
523 mov eax, [original_ebp
]
524 mov edi, JSAMPARRAY
[output_buf
(eax)] ; (JSAMPROW *)
525 mov eax, JDIMENSION
[output_col
(eax)]
529 ; xmm7=col0, xmm1=col2, xmm0=col4, xmm2=col6
532 ; z1 = (z2 + z3) * 0.541196100;
533 ; tmp2 = z1 + z3 * -1.847759065;
534 ; tmp3 = z1 + z2 * 0.765366865;
536 ; (This implementation)
537 ; tmp2 = z2 * 0.541196100 + z3 * (0.541196100 - 1.847759065);
538 ; tmp3 = z2 * (0.541196100 + 0.765366865) + z3 * 0.541196100;
540 movdqa xmm6
,xmm1
; xmm1=in2=z2
542 punpcklwd xmm6
,xmm2
; xmm2=in6=z3
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
552 paddw xmm7
,xmm0
; xmm7=in0+in4
553 psubw xmm3
,xmm0
; xmm3=in0-in4
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
563 paddd xmm4
,xmm6
; xmm4=tmp10L
564 psubd xmm7
,xmm6
; xmm7=tmp13L
566 paddd xmm0
,xmm5
; xmm0=tmp10H
567 psubd xmm6
,xmm5
; xmm6=tmp13H
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
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
582 paddd xmm5
,xmm1
; xmm5=tmp11L
583 psubd xmm0
,xmm1
; xmm0=tmp12L
585 paddd xmm4
,xmm2
; xmm4=tmp11H
586 psubd xmm7
,xmm2
; xmm7=tmp12H
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
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
602 paddw xmm5
,xmm1
; xmm5=z3
603 paddw xmm4
,xmm2
; xmm4=z4
606 ; z5 = (z3 + z4) * 1.175875602;
607 ; z3 = z3 * -1.961570560; z4 = z4 * -0.390180644;
608 ; z3 += z5; z4 += z5;
610 ; (This implementation)
611 ; z3 = z3 * (1.175875602 - 1.961570560) + z4 * 1.175875602;
612 ; z4 = z3 * 1.175875602 + z4 * (1.175875602 - 0.390180644);
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
625 movdqa XMMWORD
[wk
(10)], xmm0
; wk(10)=z3L
626 movdqa XMMWORD
[wk
(11)], xmm7
; wk(11)=z3H
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;
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;
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
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
660 movdqa XMMWORD
[wk
(8)], xmm0
; wk(8)=tmp0L
661 movdqa XMMWORD
[wk
(9)], xmm7
; wk(9)=tmp0H
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
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
679 movdqa XMMWORD
[wk
(10)], xmm0
; wk(10)=tmp1L
680 movdqa XMMWORD
[wk
(11)], xmm7
; wk(11)=tmp1H
682 ; -- Final output stage
684 movdqa xmm5
, XMMWORD
[wk
(0)] ; xmm5=tmp10L
685 movdqa xmm4
, XMMWORD
[wk
(1)] ; xmm4=tmp10H
689 paddd xmm5
,xmm1
; xmm5=data0L
690 paddd xmm4
,xmm3
; xmm4=data0H
691 psubd xmm0
,xmm1
; xmm0=data7L
692 psubd xmm7
,xmm3
; xmm7=data7H
694 movdqa xmm1
,[GOTOFF
(ebx,PD_DESCALE_P2
)] ; xmm1=[PD_DESCALE_P2]
698 psrad xmm5
,DESCALE_P2
699 psrad xmm4
,DESCALE_P2
702 psrad xmm0
,DESCALE_P2
703 psrad xmm7
,DESCALE_P2
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)
708 movdqa xmm3
, XMMWORD
[wk
(4)] ; xmm3=tmp11L
709 movdqa xmm1
, XMMWORD
[wk
(5)] ; xmm1=tmp11H
713 paddd xmm3
,xmm2
; xmm3=data1L
714 paddd xmm1
,xmm6
; xmm1=data1H
715 psubd xmm4
,xmm2
; xmm4=data6L
716 psubd xmm7
,xmm6
; xmm7=data6H
718 movdqa xmm2
,[GOTOFF
(ebx,PD_DESCALE_P2
)] ; xmm2=[PD_DESCALE_P2]
722 psrad xmm3
,DESCALE_P2
723 psrad xmm1
,DESCALE_P2
726 psrad xmm4
,DESCALE_P2
727 psrad xmm7
,DESCALE_P2
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)
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)
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
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)
745 paddd xmm6
,xmm1
; xmm6=data2L
746 paddd xmm2
,xmm7
; xmm2=data2H
747 psubd xmm4
,xmm1
; xmm4=data5L
748 psubd xmm0
,xmm7
; xmm0=data5H
750 movdqa xmm5
,[GOTOFF
(ebx,PD_DESCALE_P2
)] ; xmm5=[PD_DESCALE_P2]
754 psrad xmm6
,DESCALE_P2
755 psrad xmm2
,DESCALE_P2
758 psrad xmm4
,DESCALE_P2
759 psrad xmm0
,DESCALE_P2
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)
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
771 paddd xmm3
,xmm7
; xmm3=data3L
772 paddd xmm1
,xmm5
; xmm1=data3H
773 psubd xmm2
,xmm7
; xmm2=data4L
774 psubd xmm0
,xmm5
; xmm0=data4H
776 movdqa xmm7
,[GOTOFF
(ebx,PD_DESCALE_P2
)] ; xmm7=[PD_DESCALE_P2]
780 psrad xmm3
,DESCALE_P2
781 psrad xmm1
,DESCALE_P2
784 psrad xmm2
,DESCALE_P2
785 psrad xmm0
,DESCALE_P2
787 movdqa xmm5
,[GOTOFF
(ebx,PB_CENTERJSAMP
)] ; xmm5=[PB_CENTERJSAMP]
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)
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)
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)
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)
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)
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)
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)
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
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
849 ; pop edx ; need not be preserved
852 mov esp,ebp ; esp <- aligned ebp
853 pop esp ; esp <- original ebp
857 ; For some reason, the OS X linker does not honor the request to align the
858 ; segment unless we do this.