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1 : | edgomez | 1.2 | ;/**************************************************************************** |
2 : | ; * | ||
3 : | ; * XVID MPEG-4 VIDEO CODEC | ||
4 : | ; * - SSE2 forward discrete cosine transform - | ||
5 : | ; * | ||
6 : | ; * Copyright(C) 2003 Pascal Massimino <skal@planet-d.net> | ||
7 : | ; * | ||
8 : | ; * This program is free software; you can redistribute it and/or modify it | ||
9 : | ; * under the terms of the GNU General Public License as published by | ||
10 : | ; * the Free Software Foundation; either version 2 of the License, or | ||
11 : | ; * (at your option) any later version. | ||
12 : | ; * | ||
13 : | ; * This program is distributed in the hope that it will be useful, | ||
14 : | ; * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
15 : | ; * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
16 : | ; * GNU General Public License for more details. | ||
17 : | ; * | ||
18 : | ; * You should have received a copy of the GNU General Public License | ||
19 : | ; * along with this program; if not, write to the Free Software | ||
20 : | ; * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | ||
21 : | ; * | ||
22 : | Isibaar | 1.15 | ; * $Id: fdct_sse2_skal.asm,v 1.14 2008/12/05 10:33:47 Isibaar Exp $ |
23 : | edgomez | 1.2 | ; * |
24 : | ; ***************************************************************************/ | ||
25 : | |||
26 : | Isibaar | 1.10 | %include "nasm.inc" |
27 : | edgomez | 1.2 | |
28 : | ;----------------------------------------------------------------------------- | ||
29 : | ; | ||
30 : | ; -=FDCT=- | ||
31 : | ; | ||
32 : | ; Vertical pass is an implementation of the scheme: | ||
33 : | ; Loeffler C., Ligtenberg A., and Moschytz C.S.: | ||
34 : | ; Practical Fast 1D DCT Algorithm with Eleven Multiplications, | ||
35 : | ; Proc. ICASSP 1989, 988-991. | ||
36 : | ; | ||
37 : | ; Horizontal pass is a double 4x4 vector/matrix multiplication, | ||
38 : | ; (see also Intel's Application Note 922: | ||
39 : | ; http://developer.intel.com/vtune/cbts/strmsimd/922down.htm | ||
40 : | ; Copyright (C) 1999 Intel Corporation) | ||
41 : | ; | ||
42 : | ; Notes: | ||
43 : | ; * tan(3pi/16) is greater than 0.5, and would use the | ||
44 : | ; sign bit when turned into 16b fixed-point precision. So, | ||
45 : | ; we use the trick: x*tan3 = x*(tan3-1)+x | ||
46 : | ; | ||
47 : | ; * There's only one SSE-specific instruction (pshufw). | ||
48 : | ; | ||
49 : | ; * There's still 1 or 2 ticks to save in fLLM_PASS, but | ||
50 : | ; I prefer having a readable code, instead of a tightly | ||
51 : | ; scheduled one... | ||
52 : | ; | ||
53 : | ; * Quantization stage (as well as pre-transposition for the | ||
54 : | ; idct way back) can be included in the fTab* constants | ||
55 : | ; (with induced loss of precision, somehow) | ||
56 : | ; | ||
57 : | ; * Some more details at: http://skal.planet-d.net/coding/dct.html | ||
58 : | ; | ||
59 : | ;----------------------------------------------------------------------------- | ||
60 : | ; | ||
61 : | ; -=IDCT=- | ||
62 : | ; | ||
63 : | ; A little slower than fdct, because the final stages (butterflies and | ||
64 : | ; descaling) require some unpairable shifting and packing, all on | ||
65 : | ; the same CPU unit. | ||
66 : | ; | ||
67 : | ;----------------------------------------------------------------------------- | ||
68 : | |||
69 : | ;============================================================================= | ||
70 : | ; Read only data | ||
71 : | ;============================================================================= | ||
72 : | |||
73 : | Isibaar | 1.10 | DATA |
74 : | edgomez | 1.2 | |
75 : | Isibaar | 1.10 | ALIGN SECTION_ALIGN |
76 : | edgomez | 1.2 | tan1: times 8 dw 0x32ec ; tan( pi/16) |
77 : | tan2: times 8 dw 0x6a0a ; tan(2pi/16) (=sqrt(2)-1) | ||
78 : | tan3: times 8 dw 0xab0e ; tan(3pi/16)-1 | ||
79 : | sqrt2: times 8 dw 0x5a82 ; 0.5/sqrt(2) | ||
80 : | |||
81 : | ;----------------------------------------------------------------------------- | ||
82 : | ; Inverse DCT tables | ||
83 : | ;----------------------------------------------------------------------------- | ||
84 : | |||
85 : | Isibaar | 1.10 | ALIGN SECTION_ALIGN |
86 : | edgomez | 1.2 | iTab1: |
87 : | dw 0x4000, 0x539f, 0x4000, 0x22a3 | ||
88 : | dw 0x4000, 0xdd5d, 0x4000, 0xac61 | ||
89 : | dw 0x4000, 0x22a3, 0xc000, 0xac61 | ||
90 : | dw 0xc000, 0x539f, 0x4000, 0xdd5d | ||
91 : | dw 0x58c5, 0x4b42, 0x4b42, 0xee58 | ||
92 : | dw 0x3249, 0xa73b, 0x11a8, 0xcdb7 | ||
93 : | dw 0x3249, 0x11a8, 0xa73b, 0xcdb7 | ||
94 : | dw 0x11a8, 0x4b42, 0x4b42, 0xa73b | ||
95 : | |||
96 : | iTab2: | ||
97 : | dw 0x58c5, 0x73fc, 0x58c5, 0x300b | ||
98 : | dw 0x58c5, 0xcff5, 0x58c5, 0x8c04 | ||
99 : | dw 0x58c5, 0x300b, 0xa73b, 0x8c04 | ||
100 : | dw 0xa73b, 0x73fc, 0x58c5, 0xcff5 | ||
101 : | dw 0x7b21, 0x6862, 0x6862, 0xe782 | ||
102 : | dw 0x45bf, 0x84df, 0x187e, 0xba41 | ||
103 : | dw 0x45bf, 0x187e, 0x84df, 0xba41 | ||
104 : | dw 0x187e, 0x6862, 0x6862, 0x84df | ||
105 : | |||
106 : | iTab3: | ||
107 : | dw 0x539f, 0x6d41, 0x539f, 0x2d41 | ||
108 : | dw 0x539f, 0xd2bf, 0x539f, 0x92bf | ||
109 : | dw 0x539f, 0x2d41, 0xac61, 0x92bf | ||
110 : | dw 0xac61, 0x6d41, 0x539f, 0xd2bf | ||
111 : | dw 0x73fc, 0x6254, 0x6254, 0xe8ee | ||
112 : | dw 0x41b3, 0x8c04, 0x1712, 0xbe4d | ||
113 : | dw 0x41b3, 0x1712, 0x8c04, 0xbe4d | ||
114 : | dw 0x1712, 0x6254, 0x6254, 0x8c04 | ||
115 : | |||
116 : | iTab4: | ||
117 : | dw 0x4b42, 0x6254, 0x4b42, 0x28ba | ||
118 : | dw 0x4b42, 0xd746, 0x4b42, 0x9dac | ||
119 : | dw 0x4b42, 0x28ba, 0xb4be, 0x9dac | ||
120 : | dw 0xb4be, 0x6254, 0x4b42, 0xd746 | ||
121 : | dw 0x6862, 0x587e, 0x587e, 0xeb3d | ||
122 : | dw 0x3b21, 0x979e, 0x14c3, 0xc4df | ||
123 : | dw 0x3b21, 0x14c3, 0x979e, 0xc4df | ||
124 : | dw 0x14c3, 0x587e, 0x587e, 0x979e | ||
125 : | |||
126 : | Isibaar | 1.10 | ALIGN SECTION_ALIGN |
127 : | Skal | 1.6 | Walken_Idct_Rounders: |
128 : | dd 65536, 65536, 65536, 65536 | ||
129 : | dd 3597, 3597, 3597, 3597 | ||
130 : | dd 2260, 2260, 2260, 2260 | ||
131 : | dd 1203, 1203, 1203, 1203 | ||
132 : | dd 0, 0, 0, 0 | ||
133 : | dd 120, 120, 120, 120 | ||
134 : | dd 512, 512, 512, 512 | ||
135 : | dd 512, 512, 512, 512 | ||
136 : | |||
137 : | times 8 dw (65536>>11) | ||
138 : | times 8 dw ( 3597>>11) | ||
139 : | times 8 dw ( 2260>>11) | ||
140 : | edgomez | 1.2 | ; other rounders are zero... |
141 : | |||
142 : | ;----------------------------------------------------------------------------- | ||
143 : | ; Forward DCT tables | ||
144 : | ;----------------------------------------------------------------------------- | ||
145 : | |||
146 : | Isibaar | 1.10 | ALIGN SECTION_ALIGN |
147 : | edgomez | 1.2 | fTab1: |
148 : | dw 0x4000, 0x4000, 0x58c5, 0x4b42, | ||
149 : | dw 0xdd5d, 0xac61, 0xa73b, 0xcdb7, | ||
150 : | dw 0x4000, 0x4000, 0x3249, 0x11a8, | ||
151 : | dw 0x539f, 0x22a3, 0x4b42, 0xee58, | ||
152 : | dw 0x4000, 0xc000, 0x3249, 0xa73b, | ||
153 : | dw 0x539f, 0xdd5d, 0x4b42, 0xa73b, | ||
154 : | dw 0xc000, 0x4000, 0x11a8, 0x4b42, | ||
155 : | dw 0x22a3, 0xac61, 0x11a8, 0xcdb7 | ||
156 : | |||
157 : | fTab2: | ||
158 : | dw 0x58c5, 0x58c5, 0x7b21, 0x6862, | ||
159 : | dw 0xcff5, 0x8c04, 0x84df, 0xba41, | ||
160 : | dw 0x58c5, 0x58c5, 0x45bf, 0x187e, | ||
161 : | dw 0x73fc, 0x300b, 0x6862, 0xe782, | ||
162 : | dw 0x58c5, 0xa73b, 0x45bf, 0x84df, | ||
163 : | dw 0x73fc, 0xcff5, 0x6862, 0x84df, | ||
164 : | dw 0xa73b, 0x58c5, 0x187e, 0x6862, | ||
165 : | dw 0x300b, 0x8c04, 0x187e, 0xba41 | ||
166 : | |||
167 : | fTab3: | ||
168 : | dw 0x539f, 0x539f, 0x73fc, 0x6254, | ||
169 : | dw 0xd2bf, 0x92bf, 0x8c04, 0xbe4d, | ||
170 : | dw 0x539f, 0x539f, 0x41b3, 0x1712, | ||
171 : | dw 0x6d41, 0x2d41, 0x6254, 0xe8ee, | ||
172 : | dw 0x539f, 0xac61, 0x41b3, 0x8c04, | ||
173 : | dw 0x6d41, 0xd2bf, 0x6254, 0x8c04, | ||
174 : | dw 0xac61, 0x539f, 0x1712, 0x6254, | ||
175 : | dw 0x2d41, 0x92bf, 0x1712, 0xbe4d | ||
176 : | |||
177 : | fTab4: | ||
178 : | dw 0x4b42, 0x4b42, 0x6862, 0x587e, | ||
179 : | dw 0xd746, 0x9dac, 0x979e, 0xc4df, | ||
180 : | dw 0x4b42, 0x4b42, 0x3b21, 0x14c3, | ||
181 : | dw 0x6254, 0x28ba, 0x587e, 0xeb3d, | ||
182 : | dw 0x4b42, 0xb4be, 0x3b21, 0x979e, | ||
183 : | dw 0x6254, 0xd746, 0x587e, 0x979e, | ||
184 : | dw 0xb4be, 0x4b42, 0x14c3, 0x587e, | ||
185 : | dw 0x28ba, 0x9dac, 0x14c3, 0xc4df | ||
186 : | |||
187 : | |||
188 : | Isibaar | 1.10 | ALIGN SECTION_ALIGN |
189 : | edgomez | 1.2 | Fdct_Rnd0: dw 6,8,8,8, 6,8,8,8 |
190 : | Fdct_Rnd1: dw 8,8,8,8, 8,8,8,8 | ||
191 : | Fdct_Rnd2: dw 10,8,8,8, 8,8,8,8 | ||
192 : | Rounder1: dw 1,1,1,1, 1,1,1,1 | ||
193 : | |||
194 : | ;============================================================================= | ||
195 : | ; Code | ||
196 : | ;============================================================================= | ||
197 : | |||
198 : | Isibaar | 1.12 | TEXT |
199 : | edgomez | 1.2 | |
200 : | cglobal idct_sse2_skal | ||
201 : | cglobal fdct_sse2_skal | ||
202 : | |||
203 : | ;----------------------------------------------------------------------------- | ||
204 : | ; Helper macro iMTX_MULT | ||
205 : | ;----------------------------------------------------------------------------- | ||
206 : | |||
207 : | %macro iMTX_MULT 4 ; %1=src, %2 = Table to use, %3=rounder, %4=Shift | ||
208 : | |||
209 : | Isibaar | 1.10 | movdqa xmm0, [_ECX+%1*16] ; xmm0 = [01234567] |
210 : | edgomez | 1.2 | |
211 : | Skal | 1.6 | pshuflw xmm0, xmm0, 11011000b ; [02134567] ; these two shufflings could be |
212 : | pshufhw xmm0, xmm0, 11011000b ; [02134657] ; integrated in zig-zag orders | ||
213 : | |||
214 : | edgomez | 1.2 | pshufd xmm4, xmm0, 00000000b ; [02020202] |
215 : | pshufd xmm5, xmm0, 10101010b ; [46464646] | ||
216 : | pshufd xmm6, xmm0, 01010101b ; [13131313] | ||
217 : | pshufd xmm7, xmm0, 11111111b ; [57575757] | ||
218 : | |||
219 : | pmaddwd xmm4, [%2+ 0] ; dot [M00,M01][M04,M05][M08,M09][M12,M13] | ||
220 : | pmaddwd xmm5, [%2+16] ; dot [M02,M03][M06,M07][M10,M11][M14,M15] | ||
221 : | pmaddwd xmm6, [%2+32] ; dot [M16,M17][M20,M21][M24,M25][M28,M29] | ||
222 : | pmaddwd xmm7, [%2+48] ; dot [M18,M19][M22,M23][M26,M27][M30,M31] | ||
223 : | paddd xmm4, [%3] ; Round | ||
224 : | |||
225 : | paddd xmm6, xmm7 ; [b0|b1|b2|b3] | ||
226 : | paddd xmm4, xmm5 ; [a0|a1|a2|a3] | ||
227 : | |||
228 : | movdqa xmm7, xmm6 | ||
229 : | paddd xmm6, xmm4 ; mm6=a+b | ||
230 : | psubd xmm4, xmm7 ; mm4=a-b | ||
231 : | psrad xmm6, %4 ; => out [0123] | ||
232 : | psrad xmm4, %4 ; => out [7654] | ||
233 : | |||
234 : | packssdw xmm6, xmm4 ; [01237654] | ||
235 : | Skal | 1.6 | |
236 : | edgomez | 1.2 | pshufhw xmm6, xmm6, 00011011b ; [01234567] |
237 : | |||
238 : | Isibaar | 1.10 | movdqa [_ECX+%1*16], xmm6 |
239 : | edgomez | 1.2 | |
240 : | %endmacro | ||
241 : | |||
242 : | ;----------------------------------------------------------------------------- | ||
243 : | ; Helper macro iLLM_PASS | ||
244 : | ;----------------------------------------------------------------------------- | ||
245 : | |||
246 : | %macro iLLM_PASS 1 ; %1: src/dst | ||
247 : | |||
248 : | Skal | 1.6 | movdqa xmm0, [tan3] ; t3-1 |
249 : | movdqa xmm3, [%1+16*3] ; x3 | ||
250 : | edgomez | 1.2 | movdqa xmm1, xmm0 ; t3-1 |
251 : | Skal | 1.6 | movdqa xmm5, [%1+16*5] ; x5 |
252 : | edgomez | 1.2 | |
253 : | Skal | 1.6 | movdqa xmm4, [tan1] ; t1 |
254 : | movdqa xmm6, [%1+16*1] ; x1 | ||
255 : | movdqa xmm7, [%1+16*7] ; x7 | ||
256 : | edgomez | 1.2 | movdqa xmm2, xmm4 ; t1 |
257 : | |||
258 : | pmulhw xmm0, xmm3 ; x3*(t3-1) | ||
259 : | pmulhw xmm1, xmm5 ; x5*(t3-1) | ||
260 : | paddsw xmm0, xmm3 ; x3*t3 | ||
261 : | paddsw xmm1, xmm5 ; x5*t3 | ||
262 : | psubsw xmm0, xmm5 ; x3*t3-x5 = tm35 | ||
263 : | paddsw xmm1, xmm3 ; x3+x5*t3 = tp35 | ||
264 : | |||
265 : | pmulhw xmm4, xmm7 ; x7*t1 | ||
266 : | pmulhw xmm2, xmm6 ; x1*t1 | ||
267 : | paddsw xmm4, xmm6 ; x1+t1*x7 = tp17 | ||
268 : | psubsw xmm2, xmm7 ; x1*t1-x7 = tm17 | ||
269 : | |||
270 : | |||
271 : | movdqa xmm3, [sqrt2] | ||
272 : | movdqa xmm7, xmm4 | ||
273 : | movdqa xmm6, xmm2 | ||
274 : | psubsw xmm4, xmm1 ; tp17-tp35 = t1 | ||
275 : | psubsw xmm2, xmm0 ; tm17-tm35 = b3 | ||
276 : | paddsw xmm1, xmm7 ; tp17+tp35 = b0 | ||
277 : | paddsw xmm0, xmm6 ; tm17+tm35 = t2 | ||
278 : | |||
279 : | ; xmm1 = b0, xmm2 = b3. preserved | ||
280 : | |||
281 : | movdqa xmm6, xmm4 | ||
282 : | psubsw xmm4, xmm0 ; t1-t2 | ||
283 : | paddsw xmm0, xmm6 ; t1+t2 | ||
284 : | |||
285 : | pmulhw xmm4, xmm3 ; (t1-t2)/(2.sqrt2) | ||
286 : | pmulhw xmm0, xmm3 ; (t1+t2)/(2.sqrt2) | ||
287 : | |||
288 : | paddsw xmm0, xmm0 ; 2.(t1+t2) = b1 | ||
289 : | paddsw xmm4, xmm4 ; 2.(t1-t2) = b2 | ||
290 : | |||
291 : | Skal | 1.6 | movdqa xmm7, [tan2] ; t2 |
292 : | movdqa xmm3, [%1+2*16] ; x2 | ||
293 : | movdqa xmm6, [%1+6*16] ; x6 | ||
294 : | edgomez | 1.2 | movdqa xmm5, xmm7 ; t2 |
295 : | |||
296 : | pmulhw xmm7, xmm6 ; x6*t2 | ||
297 : | pmulhw xmm5, xmm3 ; x2*t2 | ||
298 : | |||
299 : | paddsw xmm7, xmm3 ; x2+x6*t2 = tp26 | ||
300 : | psubsw xmm5, xmm6 ; x2*t2-x6 = tm26 | ||
301 : | |||
302 : | |||
303 : | Skal | 1.6 | ; use:xmm3,xmm5,xmm6,xmm7 frozen: xmm0,xmm4,xmm1,xmm2 |
304 : | edgomez | 1.2 | |
305 : | movdqa xmm3, [%1+0*16] ; x0 | ||
306 : | movdqa xmm6, [%1+4*16] ; x4 | ||
307 : | |||
308 : | Skal | 1.6 | movdqa [%1 ], xmm2 ; we spill 1 reg to perform safe butterflies |
309 : | |||
310 : | movdqa xmm2, xmm3 | ||
311 : | edgomez | 1.2 | psubsw xmm3, xmm6 ; x0-x4 = tm04 |
312 : | Skal | 1.6 | paddsw xmm6, xmm2 ; x0+x4 = tp04 |
313 : | edgomez | 1.2 | |
314 : | Skal | 1.6 | movdqa xmm2, xmm6 |
315 : | psubsw xmm6, xmm7 | ||
316 : | paddsw xmm7, xmm2 | ||
317 : | movdqa xmm2, xmm3 | ||
318 : | psubsw xmm3, xmm5 | ||
319 : | paddsw xmm5, xmm2 | ||
320 : | |||
321 : | movdqa xmm2, xmm5 | ||
322 : | psubsw xmm5, xmm0 | ||
323 : | paddsw xmm0, xmm2 | ||
324 : | movdqa xmm2, xmm3 | ||
325 : | psubsw xmm3, xmm4 | ||
326 : | paddsw xmm4, xmm2 | ||
327 : | |||
328 : | movdqa xmm2, [%1] | ||
329 : | |||
330 : | psraw xmm5, 6 ; out6 | ||
331 : | psraw xmm3, 6 ; out5 | ||
332 : | psraw xmm0, 6 ; out1 | ||
333 : | psraw xmm4, 6 ; out2 | ||
334 : | edgomez | 1.2 | |
335 : | movdqa [%1+6*16], xmm5 | ||
336 : | movdqa [%1+5*16], xmm3 | ||
337 : | movdqa [%1+1*16], xmm0 | ||
338 : | movdqa [%1+2*16], xmm4 | ||
339 : | |||
340 : | ; reminder: xmm1=b0, xmm2=b3, xmm7=a0, xmm6=a3 | ||
341 : | |||
342 : | movdqa xmm0, xmm7 | ||
343 : | movdqa xmm4, xmm6 | ||
344 : | psubsw xmm7, xmm1 ; a0-b0 | ||
345 : | psubsw xmm6, xmm2 ; a3-b3 | ||
346 : | paddsw xmm1, xmm0 ; a0+b0 | ||
347 : | paddsw xmm2, xmm4 ; a3+b3 | ||
348 : | |||
349 : | Skal | 1.6 | psraw xmm1, 6 ; out0 |
350 : | psraw xmm7, 6 ; out7 | ||
351 : | psraw xmm2, 6 ; out3 | ||
352 : | psraw xmm6, 6 ; out4 | ||
353 : | |||
354 : | ; store result | ||
355 : | edgomez | 1.2 | |
356 : | movdqa [%1+0*16], xmm1 | ||
357 : | movdqa [%1+3*16], xmm2 | ||
358 : | movdqa [%1+4*16], xmm6 | ||
359 : | movdqa [%1+7*16], xmm7 | ||
360 : | Skal | 1.6 | |
361 : | edgomez | 1.2 | %endmacro |
362 : | |||
363 : | ;----------------------------------------------------------------------------- | ||
364 : | ; Helper macro TEST_ROW (test a null row) | ||
365 : | ;----------------------------------------------------------------------------- | ||
366 : | |||
367 : | %macro TEST_ROW 2 ; %1:src, %2:label x8 | ||
368 : | Isibaar | 1.10 | mov _EAX, [%1 ] |
369 : | mov _EDX, [%1+ 8] | ||
370 : | or _EAX, [%1+ 4] | ||
371 : | or _EDX, [%1+12] | ||
372 : | or _EAX, _EDX | ||
373 : | edgomez | 1.2 | jz near %2 |
374 : | %endmacro | ||
375 : | |||
376 : | ;----------------------------------------------------------------------------- | ||
377 : | ; Function idct (this one skips null rows) | ||
378 : | ;----------------------------------------------------------------------------- | ||
379 : | Skal | 1.6 | ; IEEE1180 and Walken compatible version |
380 : | edgomez | 1.2 | |
381 : | Isibaar | 1.10 | ALIGN SECTION_ALIGN |
382 : | Skal | 1.6 | idct_sse2_skal: |
383 : | edgomez | 1.2 | |
384 : | Isibaar | 1.11 | PUSH_XMM6_XMM7 |
385 : | |||
386 : | Isibaar | 1.10 | mov _ECX, prm1 ; Src |
387 : | edgomez | 1.2 | |
388 : | Isibaar | 1.10 | TEST_ROW _ECX, .Row0_Round |
389 : | Skal | 1.6 | iMTX_MULT 0, iTab1, Walken_Idct_Rounders + 16*0, 11 |
390 : | edgomez | 1.2 | jmp .Row1 |
391 : | Isibaar | 1.9 | .Row0_Round: |
392 : | Skal | 1.6 | movdqa xmm0, [Walken_Idct_Rounders + 16*8 + 8*0] |
393 : | Isibaar | 1.10 | movdqa [_ECX ], xmm0 |
394 : | edgomez | 1.2 | |
395 : | Isibaar | 1.9 | .Row1: |
396 : | Isibaar | 1.10 | TEST_ROW _ECX+16, .Row1_Round |
397 : | Skal | 1.6 | iMTX_MULT 1, iTab2, Walken_Idct_Rounders + 16*1, 11 |
398 : | edgomez | 1.2 | jmp .Row2 |
399 : | Isibaar | 1.9 | .Row1_Round: |
400 : | Skal | 1.6 | movdqa xmm0, [Walken_Idct_Rounders + 16*8 + 16*1] |
401 : | Isibaar | 1.10 | movdqa [_ECX+16 ], xmm0 |
402 : | edgomez | 1.2 | |
403 : | Isibaar | 1.9 | .Row2: |
404 : | Isibaar | 1.10 | TEST_ROW _ECX+32, .Row2_Round |
405 : | Skal | 1.6 | iMTX_MULT 2, iTab3, Walken_Idct_Rounders + 16*2, 11 |
406 : | edgomez | 1.2 | jmp .Row3 |
407 : | Isibaar | 1.9 | .Row2_Round: |
408 : | Skal | 1.6 | movdqa xmm0, [Walken_Idct_Rounders + 16*8 + 16*2] |
409 : | Isibaar | 1.10 | movdqa [_ECX+32 ], xmm0 |
410 : | edgomez | 1.2 | |
411 : | Isibaar | 1.9 | .Row3: |
412 : | Isibaar | 1.10 | TEST_ROW _ECX+48, .Row4 |
413 : | Skal | 1.6 | iMTX_MULT 3, iTab4, Walken_Idct_Rounders + 16*3, 11 |
414 : | edgomez | 1.2 | |
415 : | Isibaar | 1.9 | .Row4: |
416 : | Isibaar | 1.10 | TEST_ROW _ECX+64, .Row5 |
417 : | Skal | 1.6 | iMTX_MULT 4, iTab1, Walken_Idct_Rounders + 16*4, 11 |
418 : | edgomez | 1.2 | |
419 : | Isibaar | 1.9 | .Row5: |
420 : | Isibaar | 1.10 | TEST_ROW _ECX+80, .Row6 |
421 : | Skal | 1.6 | iMTX_MULT 5, iTab4, Walken_Idct_Rounders + 16*5, 11 |
422 : | edgomez | 1.2 | |
423 : | Isibaar | 1.9 | .Row6: |
424 : | Isibaar | 1.10 | TEST_ROW _ECX+96, .Row7 |
425 : | Skal | 1.6 | iMTX_MULT 6, iTab3, Walken_Idct_Rounders + 16*6, 11 |
426 : | edgomez | 1.2 | |
427 : | Isibaar | 1.9 | .Row7: |
428 : | Isibaar | 1.10 | TEST_ROW _ECX+112, .End |
429 : | Skal | 1.6 | iMTX_MULT 7, iTab2, Walken_Idct_Rounders + 16*7, 11 |
430 : | Isibaar | 1.9 | .End: |
431 : | edgomez | 1.2 | |
432 : | Isibaar | 1.10 | iLLM_PASS _ECX |
433 : | Skal | 1.6 | |
434 : | Isibaar | 1.11 | POP_XMM6_XMM7 |
435 : | edgomez | 1.2 | ret |
436 : | Isibaar | 1.9 | ENDFUNC |
437 : | edgomez | 1.2 | |
438 : | ;----------------------------------------------------------------------------- | ||
439 : | ; Helper macro fLLM_PASS | ||
440 : | ;----------------------------------------------------------------------------- | ||
441 : | |||
442 : | %macro fLLM_PASS 2 ; %1: src/dst, %2:Shift | ||
443 : | |||
444 : | movdqa xmm0, [%1+0*16] ; In0 | ||
445 : | movdqa xmm2, [%1+2*16] ; In2 | ||
446 : | movdqa xmm3, xmm0 | ||
447 : | movdqa xmm4, xmm2 | ||
448 : | movdqa xmm7, [%1+7*16] ; In7 | ||
449 : | movdqa xmm5, [%1+5*16] ; In5 | ||
450 : | |||
451 : | psubsw xmm0, xmm7 ; t7 = In0-In7 | ||
452 : | paddsw xmm7, xmm3 ; t0 = In0+In7 | ||
453 : | psubsw xmm2, xmm5 ; t5 = In2-In5 | ||
454 : | paddsw xmm5, xmm4 ; t2 = In2+In5 | ||
455 : | |||
456 : | movdqa xmm3, [%1+3*16] ; In3 | ||
457 : | movdqa xmm4, [%1+4*16] ; In4 | ||
458 : | movdqa xmm1, xmm3 | ||
459 : | psubsw xmm3, xmm4 ; t4 = In3-In4 | ||
460 : | paddsw xmm4, xmm1 ; t3 = In3+In4 | ||
461 : | movdqa xmm6, [%1+6*16] ; In6 | ||
462 : | movdqa xmm1, [%1+1*16] ; In1 | ||
463 : | psubsw xmm1, xmm6 ; t6 = In1-In6 | ||
464 : | paddsw xmm6, [%1+1*16] ; t1 = In1+In6 | ||
465 : | |||
466 : | psubsw xmm7, xmm4 ; tm03 = t0-t3 | ||
467 : | psubsw xmm6, xmm5 ; tm12 = t1-t2 | ||
468 : | paddsw xmm4, xmm4 ; 2.t3 | ||
469 : | paddsw xmm5, xmm5 ; 2.t2 | ||
470 : | paddsw xmm4, xmm7 ; tp03 = t0+t3 | ||
471 : | paddsw xmm5, xmm6 ; tp12 = t1+t2 | ||
472 : | |||
473 : | psllw xmm2, %2+1 ; shift t5 (shift +1 to.. | ||
474 : | psllw xmm1, %2+1 ; shift t6 ..compensate cos4/2) | ||
475 : | psllw xmm4, %2 ; shift t3 | ||
476 : | psllw xmm5, %2 ; shift t2 | ||
477 : | psllw xmm7, %2 ; shift t0 | ||
478 : | psllw xmm6, %2 ; shift t1 | ||
479 : | psllw xmm3, %2 ; shift t4 | ||
480 : | psllw xmm0, %2 ; shift t7 | ||
481 : | |||
482 : | psubsw xmm4, xmm5 ; out4 = tp03-tp12 | ||
483 : | psubsw xmm1, xmm2 ; xmm1: t6-t5 | ||
484 : | paddsw xmm5, xmm5 | ||
485 : | paddsw xmm2, xmm2 | ||
486 : | paddsw xmm5, xmm4 ; out0 = tp03+tp12 | ||
487 : | movdqa [%1+4*16], xmm4 ; => out4 | ||
488 : | paddsw xmm2, xmm1 ; xmm2: t6+t5 | ||
489 : | movdqa [%1+0*16], xmm5 ; => out0 | ||
490 : | |||
491 : | movdqa xmm4, [tan2] ; xmm4 <= tan2 | ||
492 : | pmulhw xmm4, xmm7 ; tm03*tan2 | ||
493 : | movdqa xmm5, [tan2] ; xmm5 <= tan2 | ||
494 : | psubsw xmm4, xmm6 ; out6 = tm03*tan2 - tm12 | ||
495 : | pmulhw xmm5, xmm6 ; tm12*tan2 | ||
496 : | paddsw xmm5, xmm7 ; out2 = tm12*tan2 + tm03 | ||
497 : | |||
498 : | movdqa xmm6, [sqrt2] | ||
499 : | movdqa xmm7, [Rounder1] | ||
500 : | |||
501 : | pmulhw xmm2, xmm6 ; xmm2: tp65 = (t6 + t5)*cos4 | ||
502 : | por xmm5, xmm7 ; correct out2 | ||
503 : | por xmm4, xmm7 ; correct out6 | ||
504 : | pmulhw xmm1, xmm6 ; xmm1: tm65 = (t6 - t5)*cos4 | ||
505 : | por xmm2, xmm7 ; correct tp65 | ||
506 : | |||
507 : | movdqa [%1+2*16], xmm5 ; => out2 | ||
508 : | movdqa xmm5, xmm3 ; save t4 | ||
509 : | movdqa [%1+6*16], xmm4 ; => out6 | ||
510 : | movdqa xmm4, xmm0 ; save t7 | ||
511 : | |||
512 : | psubsw xmm3, xmm1 ; xmm3: tm465 = t4 - tm65 | ||
513 : | psubsw xmm0, xmm2 ; xmm0: tm765 = t7 - tp65 | ||
514 : | paddsw xmm2, xmm4 ; xmm2: tp765 = t7 + tp65 | ||
515 : | paddsw xmm1, xmm5 ; xmm1: tp465 = t4 + tm65 | ||
516 : | |||
517 : | movdqa xmm4, [tan3] ; tan3 - 1 | ||
518 : | movdqa xmm5, [tan1] ; tan1 | ||
519 : | |||
520 : | movdqa xmm7, xmm3 ; save tm465 | ||
521 : | pmulhw xmm3, xmm4 ; tm465*(tan3-1) | ||
522 : | movdqa xmm6, xmm1 ; save tp465 | ||
523 : | pmulhw xmm1, xmm5 ; tp465*tan1 | ||
524 : | |||
525 : | paddsw xmm3, xmm7 ; tm465*tan3 | ||
526 : | pmulhw xmm4, xmm0 ; tm765*(tan3-1) | ||
527 : | paddsw xmm4, xmm0 ; tm765*tan3 | ||
528 : | pmulhw xmm5, xmm2 ; tp765*tan1 | ||
529 : | |||
530 : | paddsw xmm1, xmm2 ; out1 = tp765 + tp465*tan1 | ||
531 : | psubsw xmm0, xmm3 ; out3 = tm765 - tm465*tan3 | ||
532 : | paddsw xmm7, xmm4 ; out5 = tm465 + tm765*tan3 | ||
533 : | psubsw xmm5, xmm6 ; out7 =-tp465 + tp765*tan1 | ||
534 : | |||
535 : | movdqa [%1+1*16], xmm1 ; => out1 | ||
536 : | movdqa [%1+3*16], xmm0 ; => out3 | ||
537 : | movdqa [%1+5*16], xmm7 ; => out5 | ||
538 : | movdqa [%1+7*16], xmm5 ; => out7 | ||
539 : | |||
540 : | %endmacro | ||
541 : | |||
542 : | ;----------------------------------------------------------------------------- | ||
543 : | ;Helper macro fMTX_MULT | ||
544 : | ;----------------------------------------------------------------------------- | ||
545 : | |||
546 : | %macro fMTX_MULT 3 ; %1=src, %2 = Coeffs, %3=rounders | ||
547 : | |||
548 : | Isibaar | 1.10 | movdqa xmm0, [_ECX+%1*16+0] ; xmm0 = [0123][4567] |
549 : | edgomez | 1.2 | pshufhw xmm1, xmm0, 00011011b ; xmm1 = [----][7654] |
550 : | pshufd xmm0, xmm0, 01000100b | ||
551 : | pshufd xmm1, xmm1, 11101110b | ||
552 : | |||
553 : | movdqa xmm2, xmm0 | ||
554 : | paddsw xmm0, xmm1 ; xmm0 = [a0 a1 a2 a3] | ||
555 : | psubsw xmm2, xmm1 ; xmm2 = [b0 b1 b2 b3] | ||
556 : | |||
557 : | punpckldq xmm0, xmm2 ; xmm0 = [a0 a1 b0 b1][a2 a3 b2 b3] | ||
558 : | pshufd xmm2, xmm0, 01001110b ; xmm2 = [a2 a3 b2 b3][a0 a1 b0 b1] | ||
559 : | |||
560 : | ; [M00 M01 M16 M17] [M06 M07 M22 M23] x mm0 = [0 /1 /2'/3'] | ||
561 : | ; [M02 M03 M18 M19] [M04 M05 M20 M21] x mm2 = [0'/1'/2 /3 ] | ||
562 : | ; [M08 M09 M24 M25] [M14 M15 M30 M31] x mm0 = [4 /5 /6'/7'] | ||
563 : | ; [M10 M11 M26 M27] [M12 M13 M28 M29] x mm2 = [4'/5'/6 /7 ] | ||
564 : | |||
565 : | movdqa xmm1, [%2+16] | ||
566 : | movdqa xmm3, [%2+32] | ||
567 : | pmaddwd xmm1, xmm2 | ||
568 : | pmaddwd xmm3, xmm0 | ||
569 : | pmaddwd xmm2, [%2+48] | ||
570 : | pmaddwd xmm0, [%2+ 0] | ||
571 : | |||
572 : | paddd xmm0, xmm1 ; [ out0 | out1 ][ out2 | out3 ] | ||
573 : | paddd xmm2, xmm3 ; [ out4 | out5 ][ out6 | out7 ] | ||
574 : | psrad xmm0, 16 | ||
575 : | psrad xmm2, 16 | ||
576 : | |||
577 : | packssdw xmm0, xmm2 ; [ out0 .. out7 ] | ||
578 : | paddsw xmm0, [%3] ; Round | ||
579 : | |||
580 : | psraw xmm0, 4 ; => [-2048, 2047] | ||
581 : | |||
582 : | Isibaar | 1.10 | movdqa [_ECX+%1*16+0], xmm0 |
583 : | edgomez | 1.2 | %endmacro |
584 : | |||
585 : | ;----------------------------------------------------------------------------- | ||
586 : | ; Function Forward DCT | ||
587 : | ;----------------------------------------------------------------------------- | ||
588 : | |||
589 : | Isibaar | 1.10 | ALIGN SECTION_ALIGN |
590 : | edgomez | 1.2 | fdct_sse2_skal: |
591 : | Isibaar | 1.11 | PUSH_XMM6_XMM7 |
592 : | Isibaar | 1.10 | mov _ECX, prm1 |
593 : | fLLM_PASS _ECX+0, 3 | ||
594 : | edgomez | 1.2 | fMTX_MULT 0, fTab1, Fdct_Rnd0 |
595 : | fMTX_MULT 1, fTab2, Fdct_Rnd2 | ||
596 : | fMTX_MULT 2, fTab3, Fdct_Rnd1 | ||
597 : | fMTX_MULT 3, fTab4, Fdct_Rnd1 | ||
598 : | fMTX_MULT 4, fTab1, Fdct_Rnd0 | ||
599 : | fMTX_MULT 5, fTab4, Fdct_Rnd1 | ||
600 : | fMTX_MULT 6, fTab3, Fdct_Rnd1 | ||
601 : | fMTX_MULT 7, fTab2, Fdct_Rnd1 | ||
602 : | Isibaar | 1.11 | |
603 : | POP_XMM6_XMM7 | ||
604 : | edgomez | 1.2 | ret |
605 : | Isibaar | 1.9 | ENDFUNC |
606 : | edgomez | 1.5 | |
607 : | Isibaar | 1.14 | ; Mac-specific workaround for misaligned DCT tables |
608 : | Isibaar | 1.13 | ALIGN SECTION_ALIGN |
609 : | times 8 dw 0 | ||
610 : | Isibaar | 1.8 | |
611 : | Isibaar | 1.15 | NON_EXEC_STACK |
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