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1 ; | |
2 ; jfsseflt-64.asm - floating-point FDCT (64-bit SSE) | |
3 ; | |
4 ; Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB | |
5 ; Copyright 2009 D. R. Commander | |
6 ; | |
7 ; Based on | |
8 ; x86 SIMD extension for IJG JPEG library | |
9 ; Copyright (C) 1999-2006, MIYASAKA Masaru. | |
10 ; For conditions of distribution and use, see copyright notice in jsimdext.inc | |
11 ; | |
12 ; This file should be assembled with NASM (Netwide Assembler), | |
13 ; can *not* be assembled with Microsoft's MASM or any compatible | |
14 ; assembler (including Borland's Turbo Assembler). | |
15 ; NASM is available from http://nasm.sourceforge.net/ or | |
16 ; http://sourceforge.net/project/showfiles.php?group_id=6208 | |
17 ; | |
18 ; This file contains a floating-point implementation of the forward DCT | |
19 ; (Discrete Cosine Transform). The following code is based directly on | |
20 ; the IJG's original jfdctflt.c; see the jfdctflt.c for more details. | |
21 ; | |
22 ; [TAB8] | |
23 | |
24 %include "jsimdext.inc" | |
25 %include "jdct.inc" | |
26 | |
27 ; -------------------------------------------------------------------------- | |
28 | |
29 %macro unpcklps2 2 ; %1=(0 1 2 3) / %2=(4 5 6 7) => %1=(0 1 4 5) | |
30 shufps %1,%2,0x44 | |
31 %endmacro | |
32 | |
33 %macro unpckhps2 2 ; %1=(0 1 2 3) / %2=(4 5 6 7) => %1=(2 3 6 7) | |
34 shufps %1,%2,0xEE | |
35 %endmacro | |
36 | |
37 ; -------------------------------------------------------------------------- | |
38 SECTION SEG_CONST | |
39 | |
40 alignz 16 | |
41 global EXTN(jconst_fdct_float_sse) PRIVATE | |
42 | |
43 EXTN(jconst_fdct_float_sse): | |
44 | |
45 PD_0_382 times 4 dd 0.382683432365089771728460 | |
46 PD_0_707 times 4 dd 0.707106781186547524400844 | |
47 PD_0_541 times 4 dd 0.541196100146196984399723 | |
48 PD_1_306 times 4 dd 1.306562964876376527856643 | |
49 | |
50 alignz 16 | |
51 | |
52 ; -------------------------------------------------------------------------- | |
53 SECTION SEG_TEXT | |
54 BITS 64 | |
55 ; | |
56 ; Perform the forward DCT on one block of samples. | |
57 ; | |
58 ; GLOBAL(void) | |
59 ; jsimd_fdct_float_sse (FAST_FLOAT * data) | |
60 ; | |
61 | |
62 ; r10 = FAST_FLOAT * data | |
63 | |
64 %define wk(i) rbp-(WK_NUM-(i))*SIZEOF_XMMWORD ; xmmword wk[WK_NUM] | |
65 %define WK_NUM 2 | |
66 | |
67 align 16 | |
68 global EXTN(jsimd_fdct_float_sse) PRIVATE | |
69 | |
70 EXTN(jsimd_fdct_float_sse): | |
71 push rbp | |
72 mov rax,rsp ; rax = original rbp | |
73 sub rsp, byte 4 | |
74 and rsp, byte (-SIZEOF_XMMWORD) ; align to 128 bits | |
75 mov [rsp],rax | |
76 mov rbp,rsp ; rbp = aligned rbp | |
77 lea rsp, [wk(0)] | |
78 collect_args | |
79 | |
80 ; ---- Pass 1: process rows. | |
81 | |
82 mov rdx, r10 ; (FAST_FLOAT *) | |
83 mov rcx, DCTSIZE/4 | |
84 .rowloop: | |
85 | |
86 movaps xmm0, XMMWORD [XMMBLOCK(2,0,rdx,SIZEOF_FAST_FLOAT)] | |
87 movaps xmm1, XMMWORD [XMMBLOCK(3,0,rdx,SIZEOF_FAST_FLOAT)] | |
88 movaps xmm2, XMMWORD [XMMBLOCK(2,1,rdx,SIZEOF_FAST_FLOAT)] | |
89 movaps xmm3, XMMWORD [XMMBLOCK(3,1,rdx,SIZEOF_FAST_FLOAT)] | |
90 | |
91 ; xmm0=(20 21 22 23), xmm2=(24 25 26 27) | |
92 ; xmm1=(30 31 32 33), xmm3=(34 35 36 37) | |
93 | |
94 movaps xmm4,xmm0 ; transpose coefficients(phase 1) | |
95 unpcklps xmm0,xmm1 ; xmm0=(20 30 21 31) | |
96 unpckhps xmm4,xmm1 ; xmm4=(22 32 23 33) | |
97 movaps xmm5,xmm2 ; transpose coefficients(phase 1) | |
98 unpcklps xmm2,xmm3 ; xmm2=(24 34 25 35) | |
99 unpckhps xmm5,xmm3 ; xmm5=(26 36 27 37) | |
100 | |
101 movaps xmm6, XMMWORD [XMMBLOCK(0,0,rdx,SIZEOF_FAST_FLOAT)] | |
102 movaps xmm7, XMMWORD [XMMBLOCK(1,0,rdx,SIZEOF_FAST_FLOAT)] | |
103 movaps xmm1, XMMWORD [XMMBLOCK(0,1,rdx,SIZEOF_FAST_FLOAT)] | |
104 movaps xmm3, XMMWORD [XMMBLOCK(1,1,rdx,SIZEOF_FAST_FLOAT)] | |
105 | |
106 ; xmm6=(00 01 02 03), xmm1=(04 05 06 07) | |
107 ; xmm7=(10 11 12 13), xmm3=(14 15 16 17) | |
108 | |
109 movaps XMMWORD [wk(0)], xmm4 ; wk(0)=(22 32 23 33) | |
110 movaps XMMWORD [wk(1)], xmm2 ; wk(1)=(24 34 25 35) | |
111 | |
112 movaps xmm4,xmm6 ; transpose coefficients(phase 1) | |
113 unpcklps xmm6,xmm7 ; xmm6=(00 10 01 11) | |
114 unpckhps xmm4,xmm7 ; xmm4=(02 12 03 13) | |
115 movaps xmm2,xmm1 ; transpose coefficients(phase 1) | |
116 unpcklps xmm1,xmm3 ; xmm1=(04 14 05 15) | |
117 unpckhps xmm2,xmm3 ; xmm2=(06 16 07 17) | |
118 | |
119 movaps xmm7,xmm6 ; transpose coefficients(phase 2) | |
120 unpcklps2 xmm6,xmm0 ; xmm6=(00 10 20 30)=data0 | |
121 unpckhps2 xmm7,xmm0 ; xmm7=(01 11 21 31)=data1 | |
122 movaps xmm3,xmm2 ; transpose coefficients(phase 2) | |
123 unpcklps2 xmm2,xmm5 ; xmm2=(06 16 26 36)=data6 | |
124 unpckhps2 xmm3,xmm5 ; xmm3=(07 17 27 37)=data7 | |
125 | |
126 movaps xmm0,xmm7 | |
127 movaps xmm5,xmm6 | |
128 subps xmm7,xmm2 ; xmm7=data1-data6=tmp6 | |
129 subps xmm6,xmm3 ; xmm6=data0-data7=tmp7 | |
130 addps xmm0,xmm2 ; xmm0=data1+data6=tmp1 | |
131 addps xmm5,xmm3 ; xmm5=data0+data7=tmp0 | |
132 | |
133 movaps xmm2, XMMWORD [wk(0)] ; xmm2=(22 32 23 33) | |
134 movaps xmm3, XMMWORD [wk(1)] ; xmm3=(24 34 25 35) | |
135 movaps XMMWORD [wk(0)], xmm7 ; wk(0)=tmp6 | |
136 movaps XMMWORD [wk(1)], xmm6 ; wk(1)=tmp7 | |
137 | |
138 movaps xmm7,xmm4 ; transpose coefficients(phase 2) | |
139 unpcklps2 xmm4,xmm2 ; xmm4=(02 12 22 32)=data2 | |
140 unpckhps2 xmm7,xmm2 ; xmm7=(03 13 23 33)=data3 | |
141 movaps xmm6,xmm1 ; transpose coefficients(phase 2) | |
142 unpcklps2 xmm1,xmm3 ; xmm1=(04 14 24 34)=data4 | |
143 unpckhps2 xmm6,xmm3 ; xmm6=(05 15 25 35)=data5 | |
144 | |
145 movaps xmm2,xmm7 | |
146 movaps xmm3,xmm4 | |
147 addps xmm7,xmm1 ; xmm7=data3+data4=tmp3 | |
148 addps xmm4,xmm6 ; xmm4=data2+data5=tmp2 | |
149 subps xmm2,xmm1 ; xmm2=data3-data4=tmp4 | |
150 subps xmm3,xmm6 ; xmm3=data2-data5=tmp5 | |
151 | |
152 ; -- Even part | |
153 | |
154 movaps xmm1,xmm5 | |
155 movaps xmm6,xmm0 | |
156 subps xmm5,xmm7 ; xmm5=tmp13 | |
157 subps xmm0,xmm4 ; xmm0=tmp12 | |
158 addps xmm1,xmm7 ; xmm1=tmp10 | |
159 addps xmm6,xmm4 ; xmm6=tmp11 | |
160 | |
161 addps xmm0,xmm5 | |
162 mulps xmm0,[rel PD_0_707] ; xmm0=z1 | |
163 | |
164 movaps xmm7,xmm1 | |
165 movaps xmm4,xmm5 | |
166 subps xmm1,xmm6 ; xmm1=data4 | |
167 subps xmm5,xmm0 ; xmm5=data6 | |
168 addps xmm7,xmm6 ; xmm7=data0 | |
169 addps xmm4,xmm0 ; xmm4=data2 | |
170 | |
171 movaps XMMWORD [XMMBLOCK(0,1,rdx,SIZEOF_FAST_FLOAT)], xmm1 | |
172 movaps XMMWORD [XMMBLOCK(2,1,rdx,SIZEOF_FAST_FLOAT)], xmm5 | |
173 movaps XMMWORD [XMMBLOCK(0,0,rdx,SIZEOF_FAST_FLOAT)], xmm7 | |
174 movaps XMMWORD [XMMBLOCK(2,0,rdx,SIZEOF_FAST_FLOAT)], xmm4 | |
175 | |
176 ; -- Odd part | |
177 | |
178 movaps xmm6, XMMWORD [wk(0)] ; xmm6=tmp6 | |
179 movaps xmm0, XMMWORD [wk(1)] ; xmm0=tmp7 | |
180 | |
181 addps xmm2,xmm3 ; xmm2=tmp10 | |
182 addps xmm3,xmm6 ; xmm3=tmp11 | |
183 addps xmm6,xmm0 ; xmm6=tmp12, xmm0=tmp7 | |
184 | |
185 mulps xmm3,[rel PD_0_707] ; xmm3=z3 | |
186 | |
187 movaps xmm1,xmm2 ; xmm1=tmp10 | |
188 subps xmm2,xmm6 | |
189 mulps xmm2,[rel PD_0_382] ; xmm2=z5 | |
190 mulps xmm1,[rel PD_0_541] ; xmm1=MULTIPLY(tmp10,FIX_0_541196) | |
191 mulps xmm6,[rel PD_1_306] ; xmm6=MULTIPLY(tmp12,FIX_1_306562) | |
192 addps xmm1,xmm2 ; xmm1=z2 | |
193 addps xmm6,xmm2 ; xmm6=z4 | |
194 | |
195 movaps xmm5,xmm0 | |
196 subps xmm0,xmm3 ; xmm0=z13 | |
197 addps xmm5,xmm3 ; xmm5=z11 | |
198 | |
199 movaps xmm7,xmm0 | |
200 movaps xmm4,xmm5 | |
201 subps xmm0,xmm1 ; xmm0=data3 | |
202 subps xmm5,xmm6 ; xmm5=data7 | |
203 addps xmm7,xmm1 ; xmm7=data5 | |
204 addps xmm4,xmm6 ; xmm4=data1 | |
205 | |
206 movaps XMMWORD [XMMBLOCK(3,0,rdx,SIZEOF_FAST_FLOAT)], xmm0 | |
207 movaps XMMWORD [XMMBLOCK(3,1,rdx,SIZEOF_FAST_FLOAT)], xmm5 | |
208 movaps XMMWORD [XMMBLOCK(1,1,rdx,SIZEOF_FAST_FLOAT)], xmm7 | |
209 movaps XMMWORD [XMMBLOCK(1,0,rdx,SIZEOF_FAST_FLOAT)], xmm4 | |
210 | |
211 add rdx, 4*DCTSIZE*SIZEOF_FAST_FLOAT | |
212 dec rcx | |
213 jnz near .rowloop | |
214 | |
215 ; ---- Pass 2: process columns. | |
216 | |
217 mov rdx, r10 ; (FAST_FLOAT *) | |
218 mov rcx, DCTSIZE/4 | |
219 .columnloop: | |
220 | |
221 movaps xmm0, XMMWORD [XMMBLOCK(2,0,rdx,SIZEOF_FAST_FLOAT)] | |
222 movaps xmm1, XMMWORD [XMMBLOCK(3,0,rdx,SIZEOF_FAST_FLOAT)] | |
223 movaps xmm2, XMMWORD [XMMBLOCK(6,0,rdx,SIZEOF_FAST_FLOAT)] | |
224 movaps xmm3, XMMWORD [XMMBLOCK(7,0,rdx,SIZEOF_FAST_FLOAT)] | |
225 | |
226 ; xmm0=(02 12 22 32), xmm2=(42 52 62 72) | |
227 ; xmm1=(03 13 23 33), xmm3=(43 53 63 73) | |
228 | |
229 movaps xmm4,xmm0 ; transpose coefficients(phase 1) | |
230 unpcklps xmm0,xmm1 ; xmm0=(02 03 12 13) | |
231 unpckhps xmm4,xmm1 ; xmm4=(22 23 32 33) | |
232 movaps xmm5,xmm2 ; transpose coefficients(phase 1) | |
233 unpcklps xmm2,xmm3 ; xmm2=(42 43 52 53) | |
234 unpckhps xmm5,xmm3 ; xmm5=(62 63 72 73) | |
235 | |
236 movaps xmm6, XMMWORD [XMMBLOCK(0,0,rdx,SIZEOF_FAST_FLOAT)] | |
237 movaps xmm7, XMMWORD [XMMBLOCK(1,0,rdx,SIZEOF_FAST_FLOAT)] | |
238 movaps xmm1, XMMWORD [XMMBLOCK(4,0,rdx,SIZEOF_FAST_FLOAT)] | |
239 movaps xmm3, XMMWORD [XMMBLOCK(5,0,rdx,SIZEOF_FAST_FLOAT)] | |
240 | |
241 ; xmm6=(00 10 20 30), xmm1=(40 50 60 70) | |
242 ; xmm7=(01 11 21 31), xmm3=(41 51 61 71) | |
243 | |
244 movaps XMMWORD [wk(0)], xmm4 ; wk(0)=(22 23 32 33) | |
245 movaps XMMWORD [wk(1)], xmm2 ; wk(1)=(42 43 52 53) | |
246 | |
247 movaps xmm4,xmm6 ; transpose coefficients(phase 1) | |
248 unpcklps xmm6,xmm7 ; xmm6=(00 01 10 11) | |
249 unpckhps xmm4,xmm7 ; xmm4=(20 21 30 31) | |
250 movaps xmm2,xmm1 ; transpose coefficients(phase 1) | |
251 unpcklps xmm1,xmm3 ; xmm1=(40 41 50 51) | |
252 unpckhps xmm2,xmm3 ; xmm2=(60 61 70 71) | |
253 | |
254 movaps xmm7,xmm6 ; transpose coefficients(phase 2) | |
255 unpcklps2 xmm6,xmm0 ; xmm6=(00 01 02 03)=data0 | |
256 unpckhps2 xmm7,xmm0 ; xmm7=(10 11 12 13)=data1 | |
257 movaps xmm3,xmm2 ; transpose coefficients(phase 2) | |
258 unpcklps2 xmm2,xmm5 ; xmm2=(60 61 62 63)=data6 | |
259 unpckhps2 xmm3,xmm5 ; xmm3=(70 71 72 73)=data7 | |
260 | |
261 movaps xmm0,xmm7 | |
262 movaps xmm5,xmm6 | |
263 subps xmm7,xmm2 ; xmm7=data1-data6=tmp6 | |
264 subps xmm6,xmm3 ; xmm6=data0-data7=tmp7 | |
265 addps xmm0,xmm2 ; xmm0=data1+data6=tmp1 | |
266 addps xmm5,xmm3 ; xmm5=data0+data7=tmp0 | |
267 | |
268 movaps xmm2, XMMWORD [wk(0)] ; xmm2=(22 23 32 33) | |
269 movaps xmm3, XMMWORD [wk(1)] ; xmm3=(42 43 52 53) | |
270 movaps XMMWORD [wk(0)], xmm7 ; wk(0)=tmp6 | |
271 movaps XMMWORD [wk(1)], xmm6 ; wk(1)=tmp7 | |
272 | |
273 movaps xmm7,xmm4 ; transpose coefficients(phase 2) | |
274 unpcklps2 xmm4,xmm2 ; xmm4=(20 21 22 23)=data2 | |
275 unpckhps2 xmm7,xmm2 ; xmm7=(30 31 32 33)=data3 | |
276 movaps xmm6,xmm1 ; transpose coefficients(phase 2) | |
277 unpcklps2 xmm1,xmm3 ; xmm1=(40 41 42 43)=data4 | |
278 unpckhps2 xmm6,xmm3 ; xmm6=(50 51 52 53)=data5 | |
279 | |
280 movaps xmm2,xmm7 | |
281 movaps xmm3,xmm4 | |
282 addps xmm7,xmm1 ; xmm7=data3+data4=tmp3 | |
283 addps xmm4,xmm6 ; xmm4=data2+data5=tmp2 | |
284 subps xmm2,xmm1 ; xmm2=data3-data4=tmp4 | |
285 subps xmm3,xmm6 ; xmm3=data2-data5=tmp5 | |
286 | |
287 ; -- Even part | |
288 | |
289 movaps xmm1,xmm5 | |
290 movaps xmm6,xmm0 | |
291 subps xmm5,xmm7 ; xmm5=tmp13 | |
292 subps xmm0,xmm4 ; xmm0=tmp12 | |
293 addps xmm1,xmm7 ; xmm1=tmp10 | |
294 addps xmm6,xmm4 ; xmm6=tmp11 | |
295 | |
296 addps xmm0,xmm5 | |
297 mulps xmm0,[rel PD_0_707] ; xmm0=z1 | |
298 | |
299 movaps xmm7,xmm1 | |
300 movaps xmm4,xmm5 | |
301 subps xmm1,xmm6 ; xmm1=data4 | |
302 subps xmm5,xmm0 ; xmm5=data6 | |
303 addps xmm7,xmm6 ; xmm7=data0 | |
304 addps xmm4,xmm0 ; xmm4=data2 | |
305 | |
306 movaps XMMWORD [XMMBLOCK(4,0,rdx,SIZEOF_FAST_FLOAT)], xmm1 | |
307 movaps XMMWORD [XMMBLOCK(6,0,rdx,SIZEOF_FAST_FLOAT)], xmm5 | |
308 movaps XMMWORD [XMMBLOCK(0,0,rdx,SIZEOF_FAST_FLOAT)], xmm7 | |
309 movaps XMMWORD [XMMBLOCK(2,0,rdx,SIZEOF_FAST_FLOAT)], xmm4 | |
310 | |
311 ; -- Odd part | |
312 | |
313 movaps xmm6, XMMWORD [wk(0)] ; xmm6=tmp6 | |
314 movaps xmm0, XMMWORD [wk(1)] ; xmm0=tmp7 | |
315 | |
316 addps xmm2,xmm3 ; xmm2=tmp10 | |
317 addps xmm3,xmm6 ; xmm3=tmp11 | |
318 addps xmm6,xmm0 ; xmm6=tmp12, xmm0=tmp7 | |
319 | |
320 mulps xmm3,[rel PD_0_707] ; xmm3=z3 | |
321 | |
322 movaps xmm1,xmm2 ; xmm1=tmp10 | |
323 subps xmm2,xmm6 | |
324 mulps xmm2,[rel PD_0_382] ; xmm2=z5 | |
325 mulps xmm1,[rel PD_0_541] ; xmm1=MULTIPLY(tmp10,FIX_0_541196) | |
326 mulps xmm6,[rel PD_1_306] ; xmm6=MULTIPLY(tmp12,FIX_1_306562) | |
327 addps xmm1,xmm2 ; xmm1=z2 | |
328 addps xmm6,xmm2 ; xmm6=z4 | |
329 | |
330 movaps xmm5,xmm0 | |
331 subps xmm0,xmm3 ; xmm0=z13 | |
332 addps xmm5,xmm3 ; xmm5=z11 | |
333 | |
334 movaps xmm7,xmm0 | |
335 movaps xmm4,xmm5 | |
336 subps xmm0,xmm1 ; xmm0=data3 | |
337 subps xmm5,xmm6 ; xmm5=data7 | |
338 addps xmm7,xmm1 ; xmm7=data5 | |
339 addps xmm4,xmm6 ; xmm4=data1 | |
340 | |
341 movaps XMMWORD [XMMBLOCK(3,0,rdx,SIZEOF_FAST_FLOAT)], xmm0 | |
342 movaps XMMWORD [XMMBLOCK(7,0,rdx,SIZEOF_FAST_FLOAT)], xmm5 | |
343 movaps XMMWORD [XMMBLOCK(5,0,rdx,SIZEOF_FAST_FLOAT)], xmm7 | |
344 movaps XMMWORD [XMMBLOCK(1,0,rdx,SIZEOF_FAST_FLOAT)], xmm4 | |
345 | |
346 add rdx, byte 4*SIZEOF_FAST_FLOAT | |
347 dec rcx | |
348 jnz near .columnloop | |
349 | |
350 uncollect_args | |
351 mov rsp,rbp ; rsp <- aligned rbp | |
352 pop rsp ; rsp <- original rbp | |
353 pop rbp | |
354 ret | |
355 | |
356 ; For some reason, the OS X linker does not honor the request to align the | |
357 ; segment unless we do this. | |
358 align 16 | |
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