2 ; jfdctint.asm - accurate integer FDCT (64-bit SSE2)
4 ; Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB
5 ; Copyright (C) 2009, D. R. Commander.
7 ; Based on the 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 ; forward DCT (Discrete Cosine Transform). The following code is based
19 ; directly on the IJG's original jfdctint.c; see the jfdctint.c for
24 %include "jsimdext.inc"
27 ; --------------------------------------------------------------------------
32 %define DESCALE_P1 (CONST_BITS-PASS1_BITS)
33 %define DESCALE_P2 (CONST_BITS+PASS1_BITS)
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_fdct_islow_sse2)
71 EXTN(jconst_fdct_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 PW_DESCALE_P2X times 8 dw 1 << (PASS1_BITS-1)
87 ; --------------------------------------------------------------------------
91 ; Perform the forward DCT on one block of samples.
94 ; jsimd_fdct_islow_sse2 (DCTELEM *data)
99 %define wk(i) rbp-(WK_NUM-(i))*SIZEOF_XMMWORD ; xmmword wk[WK_NUM]
103 global EXTN(jsimd_fdct_islow_sse2)
105 EXTN(jsimd_fdct_islow_sse2):
107 mov rax,rsp ; rax = original rbp
109 and rsp, byte (-SIZEOF_XMMWORD) ; align to 128 bits
111 mov rbp,rsp ; rbp = aligned rbp
115 ; ---- Pass 1: process rows.
117 mov rdx, r10 ; (DCTELEM *)
119 movdqa xmm0, XMMWORD [XMMBLOCK(0,0,rdx,SIZEOF_DCTELEM)]
120 movdqa xmm1, XMMWORD [XMMBLOCK(1,0,rdx,SIZEOF_DCTELEM)]
121 movdqa xmm2, XMMWORD [XMMBLOCK(2,0,rdx,SIZEOF_DCTELEM)]
122 movdqa xmm3, XMMWORD [XMMBLOCK(3,0,rdx,SIZEOF_DCTELEM)]
124 ; xmm0=(00 01 02 03 04 05 06 07), xmm2=(20 21 22 23 24 25 26 27)
125 ; xmm1=(10 11 12 13 14 15 16 17), xmm3=(30 31 32 33 34 35 36 37)
127 movdqa xmm4,xmm0 ; transpose coefficients(phase 1)
128 punpcklwd xmm0,xmm1 ; xmm0=(00 10 01 11 02 12 03 13)
129 punpckhwd xmm4,xmm1 ; xmm4=(04 14 05 15 06 16 07 17)
130 movdqa xmm5,xmm2 ; transpose coefficients(phase 1)
131 punpcklwd xmm2,xmm3 ; xmm2=(20 30 21 31 22 32 23 33)
132 punpckhwd xmm5,xmm3 ; xmm5=(24 34 25 35 26 36 27 37)
134 movdqa xmm6, XMMWORD [XMMBLOCK(4,0,rdx,SIZEOF_DCTELEM)]
135 movdqa xmm7, XMMWORD [XMMBLOCK(5,0,rdx,SIZEOF_DCTELEM)]
136 movdqa xmm1, XMMWORD [XMMBLOCK(6,0,rdx,SIZEOF_DCTELEM)]
137 movdqa xmm3, XMMWORD [XMMBLOCK(7,0,rdx,SIZEOF_DCTELEM)]
139 ; xmm6=( 4 12 20 28 36 44 52 60), xmm1=( 6 14 22 30 38 46 54 62)
140 ; xmm7=( 5 13 21 29 37 45 53 61), xmm3=( 7 15 23 31 39 47 55 63)
142 movdqa XMMWORD [wk(0)], xmm2 ; wk(0)=(20 30 21 31 22 32 23 33)
143 movdqa XMMWORD [wk(1)], xmm5 ; wk(1)=(24 34 25 35 26 36 27 37)
145 movdqa xmm2,xmm6 ; transpose coefficients(phase 1)
146 punpcklwd xmm6,xmm7 ; xmm6=(40 50 41 51 42 52 43 53)
147 punpckhwd xmm2,xmm7 ; xmm2=(44 54 45 55 46 56 47 57)
148 movdqa xmm5,xmm1 ; transpose coefficients(phase 1)
149 punpcklwd xmm1,xmm3 ; xmm1=(60 70 61 71 62 72 63 73)
150 punpckhwd xmm5,xmm3 ; xmm5=(64 74 65 75 66 76 67 77)
152 movdqa xmm7,xmm6 ; transpose coefficients(phase 2)
153 punpckldq xmm6,xmm1 ; xmm6=(40 50 60 70 41 51 61 71)
154 punpckhdq xmm7,xmm1 ; xmm7=(42 52 62 72 43 53 63 73)
155 movdqa xmm3,xmm2 ; transpose coefficients(phase 2)
156 punpckldq xmm2,xmm5 ; xmm2=(44 54 64 74 45 55 65 75)
157 punpckhdq xmm3,xmm5 ; xmm3=(46 56 66 76 47 57 67 77)
159 movdqa xmm1, XMMWORD [wk(0)] ; xmm1=(20 30 21 31 22 32 23 33)
160 movdqa xmm5, XMMWORD [wk(1)] ; xmm5=(24 34 25 35 26 36 27 37)
161 movdqa XMMWORD [wk(2)], xmm7 ; wk(2)=(42 52 62 72 43 53 63 73)
162 movdqa XMMWORD [wk(3)], xmm2 ; wk(3)=(44 54 64 74 45 55 65 75)
164 movdqa xmm7,xmm0 ; transpose coefficients(phase 2)
165 punpckldq xmm0,xmm1 ; xmm0=(00 10 20 30 01 11 21 31)
166 punpckhdq xmm7,xmm1 ; xmm7=(02 12 22 32 03 13 23 33)
167 movdqa xmm2,xmm4 ; transpose coefficients(phase 2)
168 punpckldq xmm4,xmm5 ; xmm4=(04 14 24 34 05 15 25 35)
169 punpckhdq xmm2,xmm5 ; xmm2=(06 16 26 36 07 17 27 37)
171 movdqa xmm1,xmm0 ; transpose coefficients(phase 3)
172 punpcklqdq xmm0,xmm6 ; xmm0=(00 10 20 30 40 50 60 70)=data0
173 punpckhqdq xmm1,xmm6 ; xmm1=(01 11 21 31 41 51 61 71)=data1
174 movdqa xmm5,xmm2 ; transpose coefficients(phase 3)
175 punpcklqdq xmm2,xmm3 ; xmm2=(06 16 26 36 46 56 66 76)=data6
176 punpckhqdq xmm5,xmm3 ; xmm5=(07 17 27 37 47 57 67 77)=data7
180 psubw xmm1,xmm2 ; xmm1=data1-data6=tmp6
181 psubw xmm0,xmm5 ; xmm0=data0-data7=tmp7
182 paddw xmm6,xmm2 ; xmm6=data1+data6=tmp1
183 paddw xmm3,xmm5 ; xmm3=data0+data7=tmp0
185 movdqa xmm2, XMMWORD [wk(2)] ; xmm2=(42 52 62 72 43 53 63 73)
186 movdqa xmm5, XMMWORD [wk(3)] ; xmm5=(44 54 64 74 45 55 65 75)
187 movdqa XMMWORD [wk(0)], xmm1 ; wk(0)=tmp6
188 movdqa XMMWORD [wk(1)], xmm0 ; wk(1)=tmp7
190 movdqa xmm1,xmm7 ; transpose coefficients(phase 3)
191 punpcklqdq xmm7,xmm2 ; xmm7=(02 12 22 32 42 52 62 72)=data2
192 punpckhqdq xmm1,xmm2 ; xmm1=(03 13 23 33 43 53 63 73)=data3
193 movdqa xmm0,xmm4 ; transpose coefficients(phase 3)
194 punpcklqdq xmm4,xmm5 ; xmm4=(04 14 24 34 44 54 64 74)=data4
195 punpckhqdq xmm0,xmm5 ; xmm0=(05 15 25 35 45 55 65 75)=data5
199 paddw xmm1,xmm4 ; xmm1=data3+data4=tmp3
200 paddw xmm7,xmm0 ; xmm7=data2+data5=tmp2
201 psubw xmm2,xmm4 ; xmm2=data3-data4=tmp4
202 psubw xmm5,xmm0 ; xmm5=data2-data5=tmp5
208 paddw xmm3,xmm1 ; xmm3=tmp10
209 paddw xmm6,xmm7 ; xmm6=tmp11
210 psubw xmm4,xmm1 ; xmm4=tmp13
211 psubw xmm0,xmm7 ; xmm0=tmp12
214 paddw xmm3,xmm6 ; xmm3=tmp10+tmp11
215 psubw xmm1,xmm6 ; xmm1=tmp10-tmp11
217 psllw xmm3,PASS1_BITS ; xmm3=data0
218 psllw xmm1,PASS1_BITS ; xmm1=data4
220 movdqa XMMWORD [wk(2)], xmm3 ; wk(2)=data0
221 movdqa XMMWORD [wk(3)], xmm1 ; wk(3)=data4
224 ; z1 = (tmp12 + tmp13) * 0.541196100;
225 ; data2 = z1 + tmp13 * 0.765366865;
226 ; data6 = z1 + tmp12 * -1.847759065;
228 ; (This implementation)
229 ; data2 = tmp13 * (0.541196100 + 0.765366865) + tmp12 * 0.541196100;
230 ; data6 = tmp13 * 0.541196100 + tmp12 * (0.541196100 - 1.847759065);
232 movdqa xmm7,xmm4 ; xmm4=tmp13
234 punpcklwd xmm7,xmm0 ; xmm0=tmp12
238 pmaddwd xmm7,[rel PW_F130_F054] ; xmm7=data2L
239 pmaddwd xmm6,[rel PW_F130_F054] ; xmm6=data2H
240 pmaddwd xmm4,[rel PW_F054_MF130] ; xmm4=data6L
241 pmaddwd xmm0,[rel PW_F054_MF130] ; xmm0=data6H
243 paddd xmm7,[rel PD_DESCALE_P1]
244 paddd xmm6,[rel PD_DESCALE_P1]
245 psrad xmm7,DESCALE_P1
246 psrad xmm6,DESCALE_P1
247 paddd xmm4,[rel PD_DESCALE_P1]
248 paddd xmm0,[rel PD_DESCALE_P1]
249 psrad xmm4,DESCALE_P1
250 psrad xmm0,DESCALE_P1
252 packssdw xmm7,xmm6 ; xmm7=data2
253 packssdw xmm4,xmm0 ; xmm4=data6
255 movdqa XMMWORD [wk(4)], xmm7 ; wk(4)=data2
256 movdqa XMMWORD [wk(5)], xmm4 ; wk(5)=data6
260 movdqa xmm3, XMMWORD [wk(0)] ; xmm3=tmp6
261 movdqa xmm1, XMMWORD [wk(1)] ; xmm1=tmp7
263 movdqa xmm6,xmm2 ; xmm2=tmp4
264 movdqa xmm0,xmm5 ; xmm5=tmp5
265 paddw xmm6,xmm3 ; xmm6=z3
266 paddw xmm0,xmm1 ; xmm0=z4
269 ; z5 = (z3 + z4) * 1.175875602;
270 ; z3 = z3 * -1.961570560; z4 = z4 * -0.390180644;
271 ; z3 += z5; z4 += z5;
273 ; (This implementation)
274 ; z3 = z3 * (1.175875602 - 1.961570560) + z4 * 1.175875602;
275 ; z4 = z3 * 1.175875602 + z4 * (1.175875602 - 0.390180644);
283 pmaddwd xmm7,[rel PW_MF078_F117] ; xmm7=z3L
284 pmaddwd xmm4,[rel PW_MF078_F117] ; xmm4=z3H
285 pmaddwd xmm6,[rel PW_F117_F078] ; xmm6=z4L
286 pmaddwd xmm0,[rel PW_F117_F078] ; xmm0=z4H
288 movdqa XMMWORD [wk(0)], xmm7 ; wk(0)=z3L
289 movdqa XMMWORD [wk(1)], xmm4 ; wk(1)=z3H
292 ; z1 = tmp4 + tmp7; z2 = tmp5 + tmp6;
293 ; tmp4 = tmp4 * 0.298631336; tmp5 = tmp5 * 2.053119869;
294 ; tmp6 = tmp6 * 3.072711026; tmp7 = tmp7 * 1.501321110;
295 ; z1 = z1 * -0.899976223; z2 = z2 * -2.562915447;
296 ; data7 = tmp4 + z1 + z3; data5 = tmp5 + z2 + z4;
297 ; data3 = tmp6 + z2 + z3; data1 = tmp7 + z1 + z4;
299 ; (This implementation)
300 ; tmp4 = tmp4 * (0.298631336 - 0.899976223) + tmp7 * -0.899976223;
301 ; tmp5 = tmp5 * (2.053119869 - 2.562915447) + tmp6 * -2.562915447;
302 ; tmp6 = tmp5 * -2.562915447 + tmp6 * (3.072711026 - 2.562915447);
303 ; tmp7 = tmp4 * -0.899976223 + tmp7 * (1.501321110 - 0.899976223);
304 ; data7 = tmp4 + z3; data5 = tmp5 + z4;
305 ; data3 = tmp6 + z3; data1 = tmp7 + z4;
313 pmaddwd xmm7,[rel PW_MF060_MF089] ; xmm7=tmp4L
314 pmaddwd xmm4,[rel PW_MF060_MF089] ; xmm4=tmp4H
315 pmaddwd xmm2,[rel PW_MF089_F060] ; xmm2=tmp7L
316 pmaddwd xmm1,[rel PW_MF089_F060] ; xmm1=tmp7H
318 paddd xmm7, XMMWORD [wk(0)] ; xmm7=data7L
319 paddd xmm4, XMMWORD [wk(1)] ; xmm4=data7H
320 paddd xmm2,xmm6 ; xmm2=data1L
321 paddd xmm1,xmm0 ; xmm1=data1H
323 paddd xmm7,[rel PD_DESCALE_P1]
324 paddd xmm4,[rel PD_DESCALE_P1]
325 psrad xmm7,DESCALE_P1
326 psrad xmm4,DESCALE_P1
327 paddd xmm2,[rel PD_DESCALE_P1]
328 paddd xmm1,[rel PD_DESCALE_P1]
329 psrad xmm2,DESCALE_P1
330 psrad xmm1,DESCALE_P1
332 packssdw xmm7,xmm4 ; xmm7=data7
333 packssdw xmm2,xmm1 ; xmm2=data1
341 pmaddwd xmm4,[rel PW_MF050_MF256] ; xmm4=tmp5L
342 pmaddwd xmm1,[rel PW_MF050_MF256] ; xmm1=tmp5H
343 pmaddwd xmm5,[rel PW_MF256_F050] ; xmm5=tmp6L
344 pmaddwd xmm3,[rel PW_MF256_F050] ; xmm3=tmp6H
346 paddd xmm4,xmm6 ; xmm4=data5L
347 paddd xmm1,xmm0 ; xmm1=data5H
348 paddd xmm5, XMMWORD [wk(0)] ; xmm5=data3L
349 paddd xmm3, XMMWORD [wk(1)] ; xmm3=data3H
351 paddd xmm4,[rel PD_DESCALE_P1]
352 paddd xmm1,[rel PD_DESCALE_P1]
353 psrad xmm4,DESCALE_P1
354 psrad xmm1,DESCALE_P1
355 paddd xmm5,[rel PD_DESCALE_P1]
356 paddd xmm3,[rel PD_DESCALE_P1]
357 psrad xmm5,DESCALE_P1
358 psrad xmm3,DESCALE_P1
360 packssdw xmm4,xmm1 ; xmm4=data5
361 packssdw xmm5,xmm3 ; xmm5=data3
363 ; ---- Pass 2: process columns.
365 movdqa xmm6, XMMWORD [wk(2)] ; xmm6=col0
366 movdqa xmm0, XMMWORD [wk(4)] ; xmm0=col2
368 ; xmm6=(00 10 20 30 40 50 60 70), xmm0=(02 12 22 32 42 52 62 72)
369 ; xmm2=(01 11 21 31 41 51 61 71), xmm5=(03 13 23 33 43 53 63 73)
371 movdqa xmm1,xmm6 ; transpose coefficients(phase 1)
372 punpcklwd xmm6,xmm2 ; xmm6=(00 01 10 11 20 21 30 31)
373 punpckhwd xmm1,xmm2 ; xmm1=(40 41 50 51 60 61 70 71)
374 movdqa xmm3,xmm0 ; transpose coefficients(phase 1)
375 punpcklwd xmm0,xmm5 ; xmm0=(02 03 12 13 22 23 32 33)
376 punpckhwd xmm3,xmm5 ; xmm3=(42 43 52 53 62 63 72 73)
378 movdqa xmm2, XMMWORD [wk(3)] ; xmm2=col4
379 movdqa xmm5, XMMWORD [wk(5)] ; xmm5=col6
381 ; xmm2=(04 14 24 34 44 54 64 74), xmm5=(06 16 26 36 46 56 66 76)
382 ; xmm4=(05 15 25 35 45 55 65 75), xmm7=(07 17 27 37 47 57 67 77)
384 movdqa XMMWORD [wk(0)], xmm0 ; wk(0)=(02 03 12 13 22 23 32 33)
385 movdqa XMMWORD [wk(1)], xmm3 ; wk(1)=(42 43 52 53 62 63 72 73)
387 movdqa xmm0,xmm2 ; transpose coefficients(phase 1)
388 punpcklwd xmm2,xmm4 ; xmm2=(04 05 14 15 24 25 34 35)
389 punpckhwd xmm0,xmm4 ; xmm0=(44 45 54 55 64 65 74 75)
390 movdqa xmm3,xmm5 ; transpose coefficients(phase 1)
391 punpcklwd xmm5,xmm7 ; xmm5=(06 07 16 17 26 27 36 37)
392 punpckhwd xmm3,xmm7 ; xmm3=(46 47 56 57 66 67 76 77)
394 movdqa xmm4,xmm2 ; transpose coefficients(phase 2)
395 punpckldq xmm2,xmm5 ; xmm2=(04 05 06 07 14 15 16 17)
396 punpckhdq xmm4,xmm5 ; xmm4=(24 25 26 27 34 35 36 37)
397 movdqa xmm7,xmm0 ; transpose coefficients(phase 2)
398 punpckldq xmm0,xmm3 ; xmm0=(44 45 46 47 54 55 56 57)
399 punpckhdq xmm7,xmm3 ; xmm7=(64 65 66 67 74 75 76 77)
401 movdqa xmm5, XMMWORD [wk(0)] ; xmm5=(02 03 12 13 22 23 32 33)
402 movdqa xmm3, XMMWORD [wk(1)] ; xmm3=(42 43 52 53 62 63 72 73)
403 movdqa XMMWORD [wk(2)], xmm4 ; wk(2)=(24 25 26 27 34 35 36 37)
404 movdqa XMMWORD [wk(3)], xmm0 ; wk(3)=(44 45 46 47 54 55 56 57)
406 movdqa xmm4,xmm6 ; transpose coefficients(phase 2)
407 punpckldq xmm6,xmm5 ; xmm6=(00 01 02 03 10 11 12 13)
408 punpckhdq xmm4,xmm5 ; xmm4=(20 21 22 23 30 31 32 33)
409 movdqa xmm0,xmm1 ; transpose coefficients(phase 2)
410 punpckldq xmm1,xmm3 ; xmm1=(40 41 42 43 50 51 52 53)
411 punpckhdq xmm0,xmm3 ; xmm0=(60 61 62 63 70 71 72 73)
413 movdqa xmm5,xmm6 ; transpose coefficients(phase 3)
414 punpcklqdq xmm6,xmm2 ; xmm6=(00 01 02 03 04 05 06 07)=data0
415 punpckhqdq xmm5,xmm2 ; xmm5=(10 11 12 13 14 15 16 17)=data1
416 movdqa xmm3,xmm0 ; transpose coefficients(phase 3)
417 punpcklqdq xmm0,xmm7 ; xmm0=(60 61 62 63 64 65 66 67)=data6
418 punpckhqdq xmm3,xmm7 ; xmm3=(70 71 72 73 74 75 76 77)=data7
422 psubw xmm5,xmm0 ; xmm5=data1-data6=tmp6
423 psubw xmm6,xmm3 ; xmm6=data0-data7=tmp7
424 paddw xmm2,xmm0 ; xmm2=data1+data6=tmp1
425 paddw xmm7,xmm3 ; xmm7=data0+data7=tmp0
427 movdqa xmm0, XMMWORD [wk(2)] ; xmm0=(24 25 26 27 34 35 36 37)
428 movdqa xmm3, XMMWORD [wk(3)] ; xmm3=(44 45 46 47 54 55 56 57)
429 movdqa XMMWORD [wk(0)], xmm5 ; wk(0)=tmp6
430 movdqa XMMWORD [wk(1)], xmm6 ; wk(1)=tmp7
432 movdqa xmm5,xmm4 ; transpose coefficients(phase 3)
433 punpcklqdq xmm4,xmm0 ; xmm4=(20 21 22 23 24 25 26 27)=data2
434 punpckhqdq xmm5,xmm0 ; xmm5=(30 31 32 33 34 35 36 37)=data3
435 movdqa xmm6,xmm1 ; transpose coefficients(phase 3)
436 punpcklqdq xmm1,xmm3 ; xmm1=(40 41 42 43 44 45 46 47)=data4
437 punpckhqdq xmm6,xmm3 ; xmm6=(50 51 52 53 54 55 56 57)=data5
441 paddw xmm5,xmm1 ; xmm5=data3+data4=tmp3
442 paddw xmm4,xmm6 ; xmm4=data2+data5=tmp2
443 psubw xmm0,xmm1 ; xmm0=data3-data4=tmp4
444 psubw xmm3,xmm6 ; xmm3=data2-data5=tmp5
450 paddw xmm7,xmm5 ; xmm7=tmp10
451 paddw xmm2,xmm4 ; xmm2=tmp11
452 psubw xmm1,xmm5 ; xmm1=tmp13
453 psubw xmm6,xmm4 ; xmm6=tmp12
456 paddw xmm7,xmm2 ; xmm7=tmp10+tmp11
457 psubw xmm5,xmm2 ; xmm5=tmp10-tmp11
459 paddw xmm7,[rel PW_DESCALE_P2X]
460 paddw xmm5,[rel PW_DESCALE_P2X]
461 psraw xmm7,PASS1_BITS ; xmm7=data0
462 psraw xmm5,PASS1_BITS ; xmm5=data4
464 movdqa XMMWORD [XMMBLOCK(0,0,rdx,SIZEOF_DCTELEM)], xmm7
465 movdqa XMMWORD [XMMBLOCK(4,0,rdx,SIZEOF_DCTELEM)], xmm5
468 ; z1 = (tmp12 + tmp13) * 0.541196100;
469 ; data2 = z1 + tmp13 * 0.765366865;
470 ; data6 = z1 + tmp12 * -1.847759065;
472 ; (This implementation)
473 ; data2 = tmp13 * (0.541196100 + 0.765366865) + tmp12 * 0.541196100;
474 ; data6 = tmp13 * 0.541196100 + tmp12 * (0.541196100 - 1.847759065);
476 movdqa xmm4,xmm1 ; xmm1=tmp13
478 punpcklwd xmm4,xmm6 ; xmm6=tmp12
482 pmaddwd xmm4,[rel PW_F130_F054] ; xmm4=data2L
483 pmaddwd xmm2,[rel PW_F130_F054] ; xmm2=data2H
484 pmaddwd xmm1,[rel PW_F054_MF130] ; xmm1=data6L
485 pmaddwd xmm6,[rel PW_F054_MF130] ; xmm6=data6H
487 paddd xmm4,[rel PD_DESCALE_P2]
488 paddd xmm2,[rel PD_DESCALE_P2]
489 psrad xmm4,DESCALE_P2
490 psrad xmm2,DESCALE_P2
491 paddd xmm1,[rel PD_DESCALE_P2]
492 paddd xmm6,[rel PD_DESCALE_P2]
493 psrad xmm1,DESCALE_P2
494 psrad xmm6,DESCALE_P2
496 packssdw xmm4,xmm2 ; xmm4=data2
497 packssdw xmm1,xmm6 ; xmm1=data6
499 movdqa XMMWORD [XMMBLOCK(2,0,rdx,SIZEOF_DCTELEM)], xmm4
500 movdqa XMMWORD [XMMBLOCK(6,0,rdx,SIZEOF_DCTELEM)], xmm1
504 movdqa xmm7, XMMWORD [wk(0)] ; xmm7=tmp6
505 movdqa xmm5, XMMWORD [wk(1)] ; xmm5=tmp7
507 movdqa xmm2,xmm0 ; xmm0=tmp4
508 movdqa xmm6,xmm3 ; xmm3=tmp5
509 paddw xmm2,xmm7 ; xmm2=z3
510 paddw xmm6,xmm5 ; xmm6=z4
513 ; z5 = (z3 + z4) * 1.175875602;
514 ; z3 = z3 * -1.961570560; z4 = z4 * -0.390180644;
515 ; z3 += z5; z4 += z5;
517 ; (This implementation)
518 ; z3 = z3 * (1.175875602 - 1.961570560) + z4 * 1.175875602;
519 ; z4 = z3 * 1.175875602 + z4 * (1.175875602 - 0.390180644);
527 pmaddwd xmm4,[rel PW_MF078_F117] ; xmm4=z3L
528 pmaddwd xmm1,[rel PW_MF078_F117] ; xmm1=z3H
529 pmaddwd xmm2,[rel PW_F117_F078] ; xmm2=z4L
530 pmaddwd xmm6,[rel PW_F117_F078] ; xmm6=z4H
532 movdqa XMMWORD [wk(0)], xmm4 ; wk(0)=z3L
533 movdqa XMMWORD [wk(1)], xmm1 ; wk(1)=z3H
536 ; z1 = tmp4 + tmp7; z2 = tmp5 + tmp6;
537 ; tmp4 = tmp4 * 0.298631336; tmp5 = tmp5 * 2.053119869;
538 ; tmp6 = tmp6 * 3.072711026; tmp7 = tmp7 * 1.501321110;
539 ; z1 = z1 * -0.899976223; z2 = z2 * -2.562915447;
540 ; data7 = tmp4 + z1 + z3; data5 = tmp5 + z2 + z4;
541 ; data3 = tmp6 + z2 + z3; data1 = tmp7 + z1 + z4;
543 ; (This implementation)
544 ; tmp4 = tmp4 * (0.298631336 - 0.899976223) + tmp7 * -0.899976223;
545 ; tmp5 = tmp5 * (2.053119869 - 2.562915447) + tmp6 * -2.562915447;
546 ; tmp6 = tmp5 * -2.562915447 + tmp6 * (3.072711026 - 2.562915447);
547 ; tmp7 = tmp4 * -0.899976223 + tmp7 * (1.501321110 - 0.899976223);
548 ; data7 = tmp4 + z3; data5 = tmp5 + z4;
549 ; data3 = tmp6 + z3; data1 = tmp7 + z4;
557 pmaddwd xmm4,[rel PW_MF060_MF089] ; xmm4=tmp4L
558 pmaddwd xmm1,[rel PW_MF060_MF089] ; xmm1=tmp4H
559 pmaddwd xmm0,[rel PW_MF089_F060] ; xmm0=tmp7L
560 pmaddwd xmm5,[rel PW_MF089_F060] ; xmm5=tmp7H
562 paddd xmm4, XMMWORD [wk(0)] ; xmm4=data7L
563 paddd xmm1, XMMWORD [wk(1)] ; xmm1=data7H
564 paddd xmm0,xmm2 ; xmm0=data1L
565 paddd xmm5,xmm6 ; xmm5=data1H
567 paddd xmm4,[rel PD_DESCALE_P2]
568 paddd xmm1,[rel PD_DESCALE_P2]
569 psrad xmm4,DESCALE_P2
570 psrad xmm1,DESCALE_P2
571 paddd xmm0,[rel PD_DESCALE_P2]
572 paddd xmm5,[rel PD_DESCALE_P2]
573 psrad xmm0,DESCALE_P2
574 psrad xmm5,DESCALE_P2
576 packssdw xmm4,xmm1 ; xmm4=data7
577 packssdw xmm0,xmm5 ; xmm0=data1
579 movdqa XMMWORD [XMMBLOCK(7,0,rdx,SIZEOF_DCTELEM)], xmm4
580 movdqa XMMWORD [XMMBLOCK(1,0,rdx,SIZEOF_DCTELEM)], xmm0
588 pmaddwd xmm1,[rel PW_MF050_MF256] ; xmm1=tmp5L
589 pmaddwd xmm5,[rel PW_MF050_MF256] ; xmm5=tmp5H
590 pmaddwd xmm3,[rel PW_MF256_F050] ; xmm3=tmp6L
591 pmaddwd xmm7,[rel PW_MF256_F050] ; xmm7=tmp6H
593 paddd xmm1,xmm2 ; xmm1=data5L
594 paddd xmm5,xmm6 ; xmm5=data5H
595 paddd xmm3, XMMWORD [wk(0)] ; xmm3=data3L
596 paddd xmm7, XMMWORD [wk(1)] ; xmm7=data3H
598 paddd xmm1,[rel PD_DESCALE_P2]
599 paddd xmm5,[rel PD_DESCALE_P2]
600 psrad xmm1,DESCALE_P2
601 psrad xmm5,DESCALE_P2
602 paddd xmm3,[rel PD_DESCALE_P2]
603 paddd xmm7,[rel PD_DESCALE_P2]
604 psrad xmm3,DESCALE_P2
605 psrad xmm7,DESCALE_P2
607 packssdw xmm1,xmm5 ; xmm1=data5
608 packssdw xmm3,xmm7 ; xmm3=data3
610 movdqa XMMWORD [XMMBLOCK(5,0,rdx,SIZEOF_DCTELEM)], xmm1
611 movdqa XMMWORD [XMMBLOCK(3,0,rdx,SIZEOF_DCTELEM)], xmm3
614 mov rsp,rbp ; rsp <- aligned rbp
615 pop rsp ; rsp <- original rbp
619 ; For some reason, the OS X linker does not honor the request to align the
620 ; segment unless we do this.