2 ; jfdctint.asm - accurate integer FDCT (SSE2)
4 ; Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB
5 ; Copyright (C) 2016, 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_DATA(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)
97 %define data(b) (b) + 8 ; DCTELEM *data
99 %define original_ebp ebp + 0
100 %define wk(i) ebp - (WK_NUM - (i)) * SIZEOF_XMMWORD
105 GLOBAL_FUNCTION(jsimd_fdct_islow_sse2)
107 EXTN(jsimd_fdct_islow_sse2):
109 mov eax, esp ; eax = original ebp
111 and esp, byte (-SIZEOF_XMMWORD) ; align to 128 bits
113 mov ebp, esp ; ebp = aligned ebp
117 ; push edx ; need not be preserved
121 get_GOT ebx ; get GOT address
123 ; ---- Pass 1: process rows.
125 mov edx, POINTER [data(eax)] ; (DCTELEM *)
127 movdqa xmm0, XMMWORD [XMMBLOCK(0,0,edx,SIZEOF_DCTELEM)]
128 movdqa xmm1, XMMWORD [XMMBLOCK(1,0,edx,SIZEOF_DCTELEM)]
129 movdqa xmm2, XMMWORD [XMMBLOCK(2,0,edx,SIZEOF_DCTELEM)]
130 movdqa xmm3, XMMWORD [XMMBLOCK(3,0,edx,SIZEOF_DCTELEM)]
132 ; xmm0=(00 01 02 03 04 05 06 07), xmm2=(20 21 22 23 24 25 26 27)
133 ; xmm1=(10 11 12 13 14 15 16 17), xmm3=(30 31 32 33 34 35 36 37)
135 movdqa xmm4, xmm0 ; transpose coefficients(phase 1)
136 punpcklwd xmm0, xmm1 ; xmm0=(00 10 01 11 02 12 03 13)
137 punpckhwd xmm4, xmm1 ; xmm4=(04 14 05 15 06 16 07 17)
138 movdqa xmm5, xmm2 ; transpose coefficients(phase 1)
139 punpcklwd xmm2, xmm3 ; xmm2=(20 30 21 31 22 32 23 33)
140 punpckhwd xmm5, xmm3 ; xmm5=(24 34 25 35 26 36 27 37)
142 movdqa xmm6, XMMWORD [XMMBLOCK(4,0,edx,SIZEOF_DCTELEM)]
143 movdqa xmm7, XMMWORD [XMMBLOCK(5,0,edx,SIZEOF_DCTELEM)]
144 movdqa xmm1, XMMWORD [XMMBLOCK(6,0,edx,SIZEOF_DCTELEM)]
145 movdqa xmm3, XMMWORD [XMMBLOCK(7,0,edx,SIZEOF_DCTELEM)]
147 ; xmm6=( 4 12 20 28 36 44 52 60), xmm1=( 6 14 22 30 38 46 54 62)
148 ; xmm7=( 5 13 21 29 37 45 53 61), xmm3=( 7 15 23 31 39 47 55 63)
150 movdqa XMMWORD [wk(0)], xmm2 ; wk(0)=(20 30 21 31 22 32 23 33)
151 movdqa XMMWORD [wk(1)], xmm5 ; wk(1)=(24 34 25 35 26 36 27 37)
153 movdqa xmm2, xmm6 ; transpose coefficients(phase 1)
154 punpcklwd xmm6, xmm7 ; xmm6=(40 50 41 51 42 52 43 53)
155 punpckhwd xmm2, xmm7 ; xmm2=(44 54 45 55 46 56 47 57)
156 movdqa xmm5, xmm1 ; transpose coefficients(phase 1)
157 punpcklwd xmm1, xmm3 ; xmm1=(60 70 61 71 62 72 63 73)
158 punpckhwd xmm5, xmm3 ; xmm5=(64 74 65 75 66 76 67 77)
160 movdqa xmm7, xmm6 ; transpose coefficients(phase 2)
161 punpckldq xmm6, xmm1 ; xmm6=(40 50 60 70 41 51 61 71)
162 punpckhdq xmm7, xmm1 ; xmm7=(42 52 62 72 43 53 63 73)
163 movdqa xmm3, xmm2 ; transpose coefficients(phase 2)
164 punpckldq xmm2, xmm5 ; xmm2=(44 54 64 74 45 55 65 75)
165 punpckhdq xmm3, xmm5 ; xmm3=(46 56 66 76 47 57 67 77)
167 movdqa xmm1, XMMWORD [wk(0)] ; xmm1=(20 30 21 31 22 32 23 33)
168 movdqa xmm5, XMMWORD [wk(1)] ; xmm5=(24 34 25 35 26 36 27 37)
169 movdqa XMMWORD [wk(2)], xmm7 ; wk(2)=(42 52 62 72 43 53 63 73)
170 movdqa XMMWORD [wk(3)], xmm2 ; wk(3)=(44 54 64 74 45 55 65 75)
172 movdqa xmm7, xmm0 ; transpose coefficients(phase 2)
173 punpckldq xmm0, xmm1 ; xmm0=(00 10 20 30 01 11 21 31)
174 punpckhdq xmm7, xmm1 ; xmm7=(02 12 22 32 03 13 23 33)
175 movdqa xmm2, xmm4 ; transpose coefficients(phase 2)
176 punpckldq xmm4, xmm5 ; xmm4=(04 14 24 34 05 15 25 35)
177 punpckhdq xmm2, xmm5 ; xmm2=(06 16 26 36 07 17 27 37)
179 movdqa xmm1, xmm0 ; transpose coefficients(phase 3)
180 punpcklqdq xmm0, xmm6 ; xmm0=(00 10 20 30 40 50 60 70)=data0
181 punpckhqdq xmm1, xmm6 ; xmm1=(01 11 21 31 41 51 61 71)=data1
182 movdqa xmm5, xmm2 ; transpose coefficients(phase 3)
183 punpcklqdq xmm2, xmm3 ; xmm2=(06 16 26 36 46 56 66 76)=data6
184 punpckhqdq xmm5, xmm3 ; xmm5=(07 17 27 37 47 57 67 77)=data7
188 psubw xmm1, xmm2 ; xmm1=data1-data6=tmp6
189 psubw xmm0, xmm5 ; xmm0=data0-data7=tmp7
190 paddw xmm6, xmm2 ; xmm6=data1+data6=tmp1
191 paddw xmm3, xmm5 ; xmm3=data0+data7=tmp0
193 movdqa xmm2, XMMWORD [wk(2)] ; xmm2=(42 52 62 72 43 53 63 73)
194 movdqa xmm5, XMMWORD [wk(3)] ; xmm5=(44 54 64 74 45 55 65 75)
195 movdqa XMMWORD [wk(0)], xmm1 ; wk(0)=tmp6
196 movdqa XMMWORD [wk(1)], xmm0 ; wk(1)=tmp7
198 movdqa xmm1, xmm7 ; transpose coefficients(phase 3)
199 punpcklqdq xmm7, xmm2 ; xmm7=(02 12 22 32 42 52 62 72)=data2
200 punpckhqdq xmm1, xmm2 ; xmm1=(03 13 23 33 43 53 63 73)=data3
201 movdqa xmm0, xmm4 ; transpose coefficients(phase 3)
202 punpcklqdq xmm4, xmm5 ; xmm4=(04 14 24 34 44 54 64 74)=data4
203 punpckhqdq xmm0, xmm5 ; xmm0=(05 15 25 35 45 55 65 75)=data5
207 paddw xmm1, xmm4 ; xmm1=data3+data4=tmp3
208 paddw xmm7, xmm0 ; xmm7=data2+data5=tmp2
209 psubw xmm2, xmm4 ; xmm2=data3-data4=tmp4
210 psubw xmm5, xmm0 ; xmm5=data2-data5=tmp5
216 paddw xmm3, xmm1 ; xmm3=tmp10
217 paddw xmm6, xmm7 ; xmm6=tmp11
218 psubw xmm4, xmm1 ; xmm4=tmp13
219 psubw xmm0, xmm7 ; xmm0=tmp12
222 paddw xmm3, xmm6 ; xmm3=tmp10+tmp11
223 psubw xmm1, xmm6 ; xmm1=tmp10-tmp11
225 psllw xmm3, PASS1_BITS ; xmm3=data0
226 psllw xmm1, PASS1_BITS ; xmm1=data4
228 movdqa XMMWORD [wk(2)], xmm3 ; wk(2)=data0
229 movdqa XMMWORD [wk(3)], xmm1 ; wk(3)=data4
232 ; z1 = (tmp12 + tmp13) * 0.541196100;
233 ; data2 = z1 + tmp13 * 0.765366865;
234 ; data6 = z1 + tmp12 * -1.847759065;
236 ; (This implementation)
237 ; data2 = tmp13 * (0.541196100 + 0.765366865) + tmp12 * 0.541196100;
238 ; data6 = tmp13 * 0.541196100 + tmp12 * (0.541196100 - 1.847759065);
240 movdqa xmm7, xmm4 ; xmm4=tmp13
242 punpcklwd xmm7, xmm0 ; xmm0=tmp12
246 pmaddwd xmm7, [GOTOFF(ebx,PW_F130_F054)] ; xmm7=data2L
247 pmaddwd xmm6, [GOTOFF(ebx,PW_F130_F054)] ; xmm6=data2H
248 pmaddwd xmm4, [GOTOFF(ebx,PW_F054_MF130)] ; xmm4=data6L
249 pmaddwd xmm0, [GOTOFF(ebx,PW_F054_MF130)] ; xmm0=data6H
251 paddd xmm7, [GOTOFF(ebx,PD_DESCALE_P1)]
252 paddd xmm6, [GOTOFF(ebx,PD_DESCALE_P1)]
253 psrad xmm7, DESCALE_P1
254 psrad xmm6, DESCALE_P1
255 paddd xmm4, [GOTOFF(ebx,PD_DESCALE_P1)]
256 paddd xmm0, [GOTOFF(ebx,PD_DESCALE_P1)]
257 psrad xmm4, DESCALE_P1
258 psrad xmm0, DESCALE_P1
260 packssdw xmm7, xmm6 ; xmm7=data2
261 packssdw xmm4, xmm0 ; xmm4=data6
263 movdqa XMMWORD [wk(4)], xmm7 ; wk(4)=data2
264 movdqa XMMWORD [wk(5)], xmm4 ; wk(5)=data6
268 movdqa xmm3, XMMWORD [wk(0)] ; xmm3=tmp6
269 movdqa xmm1, XMMWORD [wk(1)] ; xmm1=tmp7
271 movdqa xmm6, xmm2 ; xmm2=tmp4
272 movdqa xmm0, xmm5 ; xmm5=tmp5
273 paddw xmm6, xmm3 ; xmm6=z3
274 paddw xmm0, xmm1 ; xmm0=z4
277 ; z5 = (z3 + z4) * 1.175875602;
278 ; z3 = z3 * -1.961570560; z4 = z4 * -0.390180644;
279 ; z3 += z5; z4 += z5;
281 ; (This implementation)
282 ; z3 = z3 * (1.175875602 - 1.961570560) + z4 * 1.175875602;
283 ; z4 = z3 * 1.175875602 + z4 * (1.175875602 - 0.390180644);
291 pmaddwd xmm7, [GOTOFF(ebx,PW_MF078_F117)] ; xmm7=z3L
292 pmaddwd xmm4, [GOTOFF(ebx,PW_MF078_F117)] ; xmm4=z3H
293 pmaddwd xmm6, [GOTOFF(ebx,PW_F117_F078)] ; xmm6=z4L
294 pmaddwd xmm0, [GOTOFF(ebx,PW_F117_F078)] ; xmm0=z4H
296 movdqa XMMWORD [wk(0)], xmm7 ; wk(0)=z3L
297 movdqa XMMWORD [wk(1)], xmm4 ; wk(1)=z3H
300 ; z1 = tmp4 + tmp7; z2 = tmp5 + tmp6;
301 ; tmp4 = tmp4 * 0.298631336; tmp5 = tmp5 * 2.053119869;
302 ; tmp6 = tmp6 * 3.072711026; tmp7 = tmp7 * 1.501321110;
303 ; z1 = z1 * -0.899976223; z2 = z2 * -2.562915447;
304 ; data7 = tmp4 + z1 + z3; data5 = tmp5 + z2 + z4;
305 ; data3 = tmp6 + z2 + z3; data1 = tmp7 + z1 + z4;
307 ; (This implementation)
308 ; tmp4 = tmp4 * (0.298631336 - 0.899976223) + tmp7 * -0.899976223;
309 ; tmp5 = tmp5 * (2.053119869 - 2.562915447) + tmp6 * -2.562915447;
310 ; tmp6 = tmp5 * -2.562915447 + tmp6 * (3.072711026 - 2.562915447);
311 ; tmp7 = tmp4 * -0.899976223 + tmp7 * (1.501321110 - 0.899976223);
312 ; data7 = tmp4 + z3; data5 = tmp5 + z4;
313 ; data3 = tmp6 + z3; data1 = tmp7 + z4;
321 pmaddwd xmm7, [GOTOFF(ebx,PW_MF060_MF089)] ; xmm7=tmp4L
322 pmaddwd xmm4, [GOTOFF(ebx,PW_MF060_MF089)] ; xmm4=tmp4H
323 pmaddwd xmm2, [GOTOFF(ebx,PW_MF089_F060)] ; xmm2=tmp7L
324 pmaddwd xmm1, [GOTOFF(ebx,PW_MF089_F060)] ; xmm1=tmp7H
326 paddd xmm7, XMMWORD [wk(0)] ; xmm7=data7L
327 paddd xmm4, XMMWORD [wk(1)] ; xmm4=data7H
328 paddd xmm2, xmm6 ; xmm2=data1L
329 paddd xmm1, xmm0 ; xmm1=data1H
331 paddd xmm7, [GOTOFF(ebx,PD_DESCALE_P1)]
332 paddd xmm4, [GOTOFF(ebx,PD_DESCALE_P1)]
333 psrad xmm7, DESCALE_P1
334 psrad xmm4, DESCALE_P1
335 paddd xmm2, [GOTOFF(ebx,PD_DESCALE_P1)]
336 paddd xmm1, [GOTOFF(ebx,PD_DESCALE_P1)]
337 psrad xmm2, DESCALE_P1
338 psrad xmm1, DESCALE_P1
340 packssdw xmm7, xmm4 ; xmm7=data7
341 packssdw xmm2, xmm1 ; xmm2=data1
349 pmaddwd xmm4, [GOTOFF(ebx,PW_MF050_MF256)] ; xmm4=tmp5L
350 pmaddwd xmm1, [GOTOFF(ebx,PW_MF050_MF256)] ; xmm1=tmp5H
351 pmaddwd xmm5, [GOTOFF(ebx,PW_MF256_F050)] ; xmm5=tmp6L
352 pmaddwd xmm3, [GOTOFF(ebx,PW_MF256_F050)] ; xmm3=tmp6H
354 paddd xmm4, xmm6 ; xmm4=data5L
355 paddd xmm1, xmm0 ; xmm1=data5H
356 paddd xmm5, XMMWORD [wk(0)] ; xmm5=data3L
357 paddd xmm3, XMMWORD [wk(1)] ; xmm3=data3H
359 paddd xmm4, [GOTOFF(ebx,PD_DESCALE_P1)]
360 paddd xmm1, [GOTOFF(ebx,PD_DESCALE_P1)]
361 psrad xmm4, DESCALE_P1
362 psrad xmm1, DESCALE_P1
363 paddd xmm5, [GOTOFF(ebx,PD_DESCALE_P1)]
364 paddd xmm3, [GOTOFF(ebx,PD_DESCALE_P1)]
365 psrad xmm5, DESCALE_P1
366 psrad xmm3, DESCALE_P1
368 packssdw xmm4, xmm1 ; xmm4=data5
369 packssdw xmm5, xmm3 ; xmm5=data3
371 ; ---- Pass 2: process columns.
373 ; mov edx, POINTER [data(eax)] ; (DCTELEM *)
375 movdqa xmm6, XMMWORD [wk(2)] ; xmm6=col0
376 movdqa xmm0, XMMWORD [wk(4)] ; xmm0=col2
378 ; xmm6=(00 10 20 30 40 50 60 70), xmm0=(02 12 22 32 42 52 62 72)
379 ; xmm2=(01 11 21 31 41 51 61 71), xmm5=(03 13 23 33 43 53 63 73)
381 movdqa xmm1, xmm6 ; transpose coefficients(phase 1)
382 punpcklwd xmm6, xmm2 ; xmm6=(00 01 10 11 20 21 30 31)
383 punpckhwd xmm1, xmm2 ; xmm1=(40 41 50 51 60 61 70 71)
384 movdqa xmm3, xmm0 ; transpose coefficients(phase 1)
385 punpcklwd xmm0, xmm5 ; xmm0=(02 03 12 13 22 23 32 33)
386 punpckhwd xmm3, xmm5 ; xmm3=(42 43 52 53 62 63 72 73)
388 movdqa xmm2, XMMWORD [wk(3)] ; xmm2=col4
389 movdqa xmm5, XMMWORD [wk(5)] ; xmm5=col6
391 ; xmm2=(04 14 24 34 44 54 64 74), xmm5=(06 16 26 36 46 56 66 76)
392 ; xmm4=(05 15 25 35 45 55 65 75), xmm7=(07 17 27 37 47 57 67 77)
394 movdqa XMMWORD [wk(0)], xmm0 ; wk(0)=(02 03 12 13 22 23 32 33)
395 movdqa XMMWORD [wk(1)], xmm3 ; wk(1)=(42 43 52 53 62 63 72 73)
397 movdqa xmm0, xmm2 ; transpose coefficients(phase 1)
398 punpcklwd xmm2, xmm4 ; xmm2=(04 05 14 15 24 25 34 35)
399 punpckhwd xmm0, xmm4 ; xmm0=(44 45 54 55 64 65 74 75)
400 movdqa xmm3, xmm5 ; transpose coefficients(phase 1)
401 punpcklwd xmm5, xmm7 ; xmm5=(06 07 16 17 26 27 36 37)
402 punpckhwd xmm3, xmm7 ; xmm3=(46 47 56 57 66 67 76 77)
404 movdqa xmm4, xmm2 ; transpose coefficients(phase 2)
405 punpckldq xmm2, xmm5 ; xmm2=(04 05 06 07 14 15 16 17)
406 punpckhdq xmm4, xmm5 ; xmm4=(24 25 26 27 34 35 36 37)
407 movdqa xmm7, xmm0 ; transpose coefficients(phase 2)
408 punpckldq xmm0, xmm3 ; xmm0=(44 45 46 47 54 55 56 57)
409 punpckhdq xmm7, xmm3 ; xmm7=(64 65 66 67 74 75 76 77)
411 movdqa xmm5, XMMWORD [wk(0)] ; xmm5=(02 03 12 13 22 23 32 33)
412 movdqa xmm3, XMMWORD [wk(1)] ; xmm3=(42 43 52 53 62 63 72 73)
413 movdqa XMMWORD [wk(2)], xmm4 ; wk(2)=(24 25 26 27 34 35 36 37)
414 movdqa XMMWORD [wk(3)], xmm0 ; wk(3)=(44 45 46 47 54 55 56 57)
416 movdqa xmm4, xmm6 ; transpose coefficients(phase 2)
417 punpckldq xmm6, xmm5 ; xmm6=(00 01 02 03 10 11 12 13)
418 punpckhdq xmm4, xmm5 ; xmm4=(20 21 22 23 30 31 32 33)
419 movdqa xmm0, xmm1 ; transpose coefficients(phase 2)
420 punpckldq xmm1, xmm3 ; xmm1=(40 41 42 43 50 51 52 53)
421 punpckhdq xmm0, xmm3 ; xmm0=(60 61 62 63 70 71 72 73)
423 movdqa xmm5, xmm6 ; transpose coefficients(phase 3)
424 punpcklqdq xmm6, xmm2 ; xmm6=(00 01 02 03 04 05 06 07)=data0
425 punpckhqdq xmm5, xmm2 ; xmm5=(10 11 12 13 14 15 16 17)=data1
426 movdqa xmm3, xmm0 ; transpose coefficients(phase 3)
427 punpcklqdq xmm0, xmm7 ; xmm0=(60 61 62 63 64 65 66 67)=data6
428 punpckhqdq xmm3, xmm7 ; xmm3=(70 71 72 73 74 75 76 77)=data7
432 psubw xmm5, xmm0 ; xmm5=data1-data6=tmp6
433 psubw xmm6, xmm3 ; xmm6=data0-data7=tmp7
434 paddw xmm2, xmm0 ; xmm2=data1+data6=tmp1
435 paddw xmm7, xmm3 ; xmm7=data0+data7=tmp0
437 movdqa xmm0, XMMWORD [wk(2)] ; xmm0=(24 25 26 27 34 35 36 37)
438 movdqa xmm3, XMMWORD [wk(3)] ; xmm3=(44 45 46 47 54 55 56 57)
439 movdqa XMMWORD [wk(0)], xmm5 ; wk(0)=tmp6
440 movdqa XMMWORD [wk(1)], xmm6 ; wk(1)=tmp7
442 movdqa xmm5, xmm4 ; transpose coefficients(phase 3)
443 punpcklqdq xmm4, xmm0 ; xmm4=(20 21 22 23 24 25 26 27)=data2
444 punpckhqdq xmm5, xmm0 ; xmm5=(30 31 32 33 34 35 36 37)=data3
445 movdqa xmm6, xmm1 ; transpose coefficients(phase 3)
446 punpcklqdq xmm1, xmm3 ; xmm1=(40 41 42 43 44 45 46 47)=data4
447 punpckhqdq xmm6, xmm3 ; xmm6=(50 51 52 53 54 55 56 57)=data5
451 paddw xmm5, xmm1 ; xmm5=data3+data4=tmp3
452 paddw xmm4, xmm6 ; xmm4=data2+data5=tmp2
453 psubw xmm0, xmm1 ; xmm0=data3-data4=tmp4
454 psubw xmm3, xmm6 ; xmm3=data2-data5=tmp5
460 paddw xmm7, xmm5 ; xmm7=tmp10
461 paddw xmm2, xmm4 ; xmm2=tmp11
462 psubw xmm1, xmm5 ; xmm1=tmp13
463 psubw xmm6, xmm4 ; xmm6=tmp12
466 paddw xmm7, xmm2 ; xmm7=tmp10+tmp11
467 psubw xmm5, xmm2 ; xmm5=tmp10-tmp11
469 paddw xmm7, [GOTOFF(ebx,PW_DESCALE_P2X)]
470 paddw xmm5, [GOTOFF(ebx,PW_DESCALE_P2X)]
471 psraw xmm7, PASS1_BITS ; xmm7=data0
472 psraw xmm5, PASS1_BITS ; xmm5=data4
474 movdqa XMMWORD [XMMBLOCK(0,0,edx,SIZEOF_DCTELEM)], xmm7
475 movdqa XMMWORD [XMMBLOCK(4,0,edx,SIZEOF_DCTELEM)], xmm5
478 ; z1 = (tmp12 + tmp13) * 0.541196100;
479 ; data2 = z1 + tmp13 * 0.765366865;
480 ; data6 = z1 + tmp12 * -1.847759065;
482 ; (This implementation)
483 ; data2 = tmp13 * (0.541196100 + 0.765366865) + tmp12 * 0.541196100;
484 ; data6 = tmp13 * 0.541196100 + tmp12 * (0.541196100 - 1.847759065);
486 movdqa xmm4, xmm1 ; xmm1=tmp13
488 punpcklwd xmm4, xmm6 ; xmm6=tmp12
492 pmaddwd xmm4, [GOTOFF(ebx,PW_F130_F054)] ; xmm4=data2L
493 pmaddwd xmm2, [GOTOFF(ebx,PW_F130_F054)] ; xmm2=data2H
494 pmaddwd xmm1, [GOTOFF(ebx,PW_F054_MF130)] ; xmm1=data6L
495 pmaddwd xmm6, [GOTOFF(ebx,PW_F054_MF130)] ; xmm6=data6H
497 paddd xmm4, [GOTOFF(ebx,PD_DESCALE_P2)]
498 paddd xmm2, [GOTOFF(ebx,PD_DESCALE_P2)]
499 psrad xmm4, DESCALE_P2
500 psrad xmm2, DESCALE_P2
501 paddd xmm1, [GOTOFF(ebx,PD_DESCALE_P2)]
502 paddd xmm6, [GOTOFF(ebx,PD_DESCALE_P2)]
503 psrad xmm1, DESCALE_P2
504 psrad xmm6, DESCALE_P2
506 packssdw xmm4, xmm2 ; xmm4=data2
507 packssdw xmm1, xmm6 ; xmm1=data6
509 movdqa XMMWORD [XMMBLOCK(2,0,edx,SIZEOF_DCTELEM)], xmm4
510 movdqa XMMWORD [XMMBLOCK(6,0,edx,SIZEOF_DCTELEM)], xmm1
514 movdqa xmm7, XMMWORD [wk(0)] ; xmm7=tmp6
515 movdqa xmm5, XMMWORD [wk(1)] ; xmm5=tmp7
517 movdqa xmm2, xmm0 ; xmm0=tmp4
518 movdqa xmm6, xmm3 ; xmm3=tmp5
519 paddw xmm2, xmm7 ; xmm2=z3
520 paddw xmm6, xmm5 ; xmm6=z4
523 ; z5 = (z3 + z4) * 1.175875602;
524 ; z3 = z3 * -1.961570560; z4 = z4 * -0.390180644;
525 ; z3 += z5; z4 += z5;
527 ; (This implementation)
528 ; z3 = z3 * (1.175875602 - 1.961570560) + z4 * 1.175875602;
529 ; z4 = z3 * 1.175875602 + z4 * (1.175875602 - 0.390180644);
537 pmaddwd xmm4, [GOTOFF(ebx,PW_MF078_F117)] ; xmm4=z3L
538 pmaddwd xmm1, [GOTOFF(ebx,PW_MF078_F117)] ; xmm1=z3H
539 pmaddwd xmm2, [GOTOFF(ebx,PW_F117_F078)] ; xmm2=z4L
540 pmaddwd xmm6, [GOTOFF(ebx,PW_F117_F078)] ; xmm6=z4H
542 movdqa XMMWORD [wk(0)], xmm4 ; wk(0)=z3L
543 movdqa XMMWORD [wk(1)], xmm1 ; wk(1)=z3H
546 ; z1 = tmp4 + tmp7; z2 = tmp5 + tmp6;
547 ; tmp4 = tmp4 * 0.298631336; tmp5 = tmp5 * 2.053119869;
548 ; tmp6 = tmp6 * 3.072711026; tmp7 = tmp7 * 1.501321110;
549 ; z1 = z1 * -0.899976223; z2 = z2 * -2.562915447;
550 ; data7 = tmp4 + z1 + z3; data5 = tmp5 + z2 + z4;
551 ; data3 = tmp6 + z2 + z3; data1 = tmp7 + z1 + z4;
553 ; (This implementation)
554 ; tmp4 = tmp4 * (0.298631336 - 0.899976223) + tmp7 * -0.899976223;
555 ; tmp5 = tmp5 * (2.053119869 - 2.562915447) + tmp6 * -2.562915447;
556 ; tmp6 = tmp5 * -2.562915447 + tmp6 * (3.072711026 - 2.562915447);
557 ; tmp7 = tmp4 * -0.899976223 + tmp7 * (1.501321110 - 0.899976223);
558 ; data7 = tmp4 + z3; data5 = tmp5 + z4;
559 ; data3 = tmp6 + z3; data1 = tmp7 + z4;
567 pmaddwd xmm4, [GOTOFF(ebx,PW_MF060_MF089)] ; xmm4=tmp4L
568 pmaddwd xmm1, [GOTOFF(ebx,PW_MF060_MF089)] ; xmm1=tmp4H
569 pmaddwd xmm0, [GOTOFF(ebx,PW_MF089_F060)] ; xmm0=tmp7L
570 pmaddwd xmm5, [GOTOFF(ebx,PW_MF089_F060)] ; xmm5=tmp7H
572 paddd xmm4, XMMWORD [wk(0)] ; xmm4=data7L
573 paddd xmm1, XMMWORD [wk(1)] ; xmm1=data7H
574 paddd xmm0, xmm2 ; xmm0=data1L
575 paddd xmm5, xmm6 ; xmm5=data1H
577 paddd xmm4, [GOTOFF(ebx,PD_DESCALE_P2)]
578 paddd xmm1, [GOTOFF(ebx,PD_DESCALE_P2)]
579 psrad xmm4, DESCALE_P2
580 psrad xmm1, DESCALE_P2
581 paddd xmm0, [GOTOFF(ebx,PD_DESCALE_P2)]
582 paddd xmm5, [GOTOFF(ebx,PD_DESCALE_P2)]
583 psrad xmm0, DESCALE_P2
584 psrad xmm5, DESCALE_P2
586 packssdw xmm4, xmm1 ; xmm4=data7
587 packssdw xmm0, xmm5 ; xmm0=data1
589 movdqa XMMWORD [XMMBLOCK(7,0,edx,SIZEOF_DCTELEM)], xmm4
590 movdqa XMMWORD [XMMBLOCK(1,0,edx,SIZEOF_DCTELEM)], xmm0
598 pmaddwd xmm1, [GOTOFF(ebx,PW_MF050_MF256)] ; xmm1=tmp5L
599 pmaddwd xmm5, [GOTOFF(ebx,PW_MF050_MF256)] ; xmm5=tmp5H
600 pmaddwd xmm3, [GOTOFF(ebx,PW_MF256_F050)] ; xmm3=tmp6L
601 pmaddwd xmm7, [GOTOFF(ebx,PW_MF256_F050)] ; xmm7=tmp6H
603 paddd xmm1, xmm2 ; xmm1=data5L
604 paddd xmm5, xmm6 ; xmm5=data5H
605 paddd xmm3, XMMWORD [wk(0)] ; xmm3=data3L
606 paddd xmm7, XMMWORD [wk(1)] ; xmm7=data3H
608 paddd xmm1, [GOTOFF(ebx,PD_DESCALE_P2)]
609 paddd xmm5, [GOTOFF(ebx,PD_DESCALE_P2)]
610 psrad xmm1, DESCALE_P2
611 psrad xmm5, DESCALE_P2
612 paddd xmm3, [GOTOFF(ebx,PD_DESCALE_P2)]
613 paddd xmm7, [GOTOFF(ebx,PD_DESCALE_P2)]
614 psrad xmm3, DESCALE_P2
615 psrad xmm7, DESCALE_P2
617 packssdw xmm1, xmm5 ; xmm1=data5
618 packssdw xmm3, xmm7 ; xmm3=data3
620 movdqa XMMWORD [XMMBLOCK(5,0,edx,SIZEOF_DCTELEM)], xmm1
621 movdqa XMMWORD [XMMBLOCK(3,0,edx,SIZEOF_DCTELEM)], xmm3
625 ; pop edx ; need not be preserved
628 mov esp, ebp ; esp <- aligned ebp
629 pop esp ; esp <- original ebp
633 ; For some reason, the OS X linker does not honor the request to align the
634 ; segment unless we do this.