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1 : | edgomez | 1176 | ;/************************************************************************** |
2 : | ; * | ||
3 : | ; * XVID MPEG-4 VIDEO CODEC | ||
4 : | ; * - 3dne Quantization/Dequantization - | ||
5 : | ; * | ||
6 : | ; * Copyright (C) 2002-2003 Peter Ross <pross@xvid.org> | ||
7 : | ; * 2002-2003 Michael Militzer <isibaar@xvid.org> | ||
8 : | ; * 2002-2003 Pascal Massimino <skal@planet-d.net> | ||
9 : | ; * | ||
10 : | ; * This program is free software ; you can redistribute it and/or modify | ||
11 : | ; * it under the terms of the GNU General Public License as published by | ||
12 : | ; * the Free Software Foundation ; either version 2 of the License, or | ||
13 : | ; * (at your option) any later version. | ||
14 : | ; * | ||
15 : | ; * This program is distributed in the hope that it will be useful, | ||
16 : | ; * but WITHOUT ANY WARRANTY ; without even the implied warranty of | ||
17 : | ; * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
18 : | ; * GNU General Public License for more details. | ||
19 : | ; * | ||
20 : | ; * You should have received a copy of the GNU General Public License | ||
21 : | ; * along with this program ; if not, write to the Free Software | ||
22 : | ; * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | ||
23 : | ; * | ||
24 : | edgomez | 1198 | ; * $Id: quantize_mpeg_mmx.asm,v 1.1.2.4 2003-11-03 15:51:50 edgomez Exp $ |
25 : | edgomez | 1176 | ; * |
26 : | ; *************************************************************************/ | ||
27 : | edgomez | 1174 | |
28 : | %define SATURATE | ||
29 : | |||
30 : | edgomez | 1192 | BITS 32 |
31 : | edgomez | 1174 | |
32 : | edgomez | 1192 | %macro cglobal 1 |
33 : | edgomez | 1174 | %ifdef PREFIX |
34 : | edgomez | 1192 | global _%1 |
35 : | edgomez | 1174 | %define %1 _%1 |
36 : | %else | ||
37 : | global %1 | ||
38 : | %endif | ||
39 : | %endmacro | ||
40 : | |||
41 : | edgomez | 1192 | %macro cextern 1 |
42 : | edgomez | 1174 | %ifdef PREFIX |
43 : | edgomez | 1192 | extern _%1 |
44 : | edgomez | 1174 | %define %1 _%1 |
45 : | %else | ||
46 : | extern %1 | ||
47 : | %endif | ||
48 : | %endmacro | ||
49 : | |||
50 : | edgomez | 1192 | ;============================================================================= |
51 : | ; Local data (Read Only) | ||
52 : | ;============================================================================= | ||
53 : | edgomez | 1174 | |
54 : | edgomez | 1198 | %ifdef FORMAT_COFF |
55 : | SECTION .rodata data | ||
56 : | %else | ||
57 : | SECTION .rodata data align=16 | ||
58 : | %endif | ||
59 : | edgomez | 1176 | |
60 : | mmx_one: | ||
61 : | times 4 dw 1 | ||
62 : | |||
63 : | edgomez | 1192 | ;----------------------------------------------------------------------------- |
64 : | ; divide by 2Q table | ||
65 : | ;----------------------------------------------------------------------------- | ||
66 : | edgomez | 1174 | |
67 : | edgomez | 1192 | ALIGN 16 |
68 : | edgomez | 1176 | mmx_div: |
69 : | edgomez | 1192 | times 4 dw 65535 ; the div by 2 formula will overflow for the case |
70 : | ; quant=1 but we don't care much because quant=1 | ||
71 : | ; is handled by a different piece of code that | ||
72 : | ; doesn't use this table. | ||
73 : | %assign quant 2 | ||
74 : | %rep 30 | ||
75 : | edgomez | 1176 | times 4 dw (1<<17) / (quant*2) + 1 |
76 : | %assign quant quant+1 | ||
77 : | %endrep | ||
78 : | edgomez | 1174 | |
79 : | edgomez | 1192 | ;----------------------------------------------------------------------------- |
80 : | ; intra matrix | ||
81 : | ;----------------------------------------------------------------------------- | ||
82 : | edgomez | 1174 | |
83 : | cextern intra_matrix | ||
84 : | cextern intra_matrix_fix | ||
85 : | |||
86 : | edgomez | 1192 | ;----------------------------------------------------------------------------- |
87 : | edgomez | 1174 | ; inter matrix |
88 : | edgomez | 1192 | ;----------------------------------------------------------------------------- |
89 : | edgomez | 1174 | |
90 : | cextern inter_matrix | ||
91 : | cextern inter_matrix_fix | ||
92 : | |||
93 : | |||
94 : | %define VM18P 3 | ||
95 : | %define VM18Q 4 | ||
96 : | |||
97 : | |||
98 : | edgomez | 1192 | ;----------------------------------------------------------------------------- |
99 : | ; quantd table | ||
100 : | ;----------------------------------------------------------------------------- | ||
101 : | edgomez | 1174 | |
102 : | edgomez | 1176 | quantd: |
103 : | %assign quant 1 | ||
104 : | %rep 31 | ||
105 : | times 4 dw ((VM18P*quant) + (VM18Q/2)) / VM18Q | ||
106 : | %assign quant quant+1 | ||
107 : | %endrep | ||
108 : | edgomez | 1174 | |
109 : | edgomez | 1192 | ;----------------------------------------------------------------------------- |
110 : | edgomez | 1174 | ; multiple by 2Q table |
111 : | edgomez | 1192 | ;----------------------------------------------------------------------------- |
112 : | edgomez | 1174 | |
113 : | edgomez | 1176 | mmx_mul_quant: |
114 : | %assign quant 1 | ||
115 : | %rep 31 | ||
116 : | times 4 dw quant | ||
117 : | %assign quant quant+1 | ||
118 : | %endrep | ||
119 : | edgomez | 1174 | |
120 : | edgomez | 1192 | ;----------------------------------------------------------------------------- |
121 : | ; saturation limits | ||
122 : | ;----------------------------------------------------------------------------- | ||
123 : | edgomez | 1174 | |
124 : | edgomez | 1192 | ALIGN 16 |
125 : | edgomez | 1174 | |
126 : | edgomez | 1176 | mmx_32767_minus_2047: |
127 : | times 4 dw (32767-2047) | ||
128 : | mmx_32768_minus_2048: | ||
129 : | times 4 dw (32768-2048) | ||
130 : | mmx_2047: | ||
131 : | times 4 dw 2047 | ||
132 : | mmx_minus_2048: | ||
133 : | times 4 dw (-2048) | ||
134 : | zero: | ||
135 : | times 4 dw 0 | ||
136 : | edgomez | 1174 | |
137 : | edgomez | 1192 | ;============================================================================= |
138 : | ; Code | ||
139 : | ;============================================================================= | ||
140 : | edgomez | 1176 | |
141 : | edgomez | 1192 | SECTION .text |
142 : | edgomez | 1174 | |
143 : | edgomez | 1192 | cglobal quant_mpeg_intra_mmx |
144 : | cglobal quant_mpeg_inter_mmx | ||
145 : | cglobal dequant_mpeg_intra_mmx | ||
146 : | cglobal dequant_mpeg_inter_mmx | ||
147 : | |||
148 : | ;----------------------------------------------------------------------------- | ||
149 : | edgomez | 1174 | ; |
150 : | edgomez | 1192 | ; uint32_t quant_mpeg_intra_mmx(int16_t * coeff, |
151 : | edgomez | 1176 | ; const int16_t const * data, |
152 : | ; const uint32_t quant, | ||
153 : | ; const uint32_t dcscalar); | ||
154 : | edgomez | 1174 | ; |
155 : | edgomez | 1192 | ;----------------------------------------------------------------------------- |
156 : | edgomez | 1174 | |
157 : | edgomez | 1192 | ALIGN 16 |
158 : | edgomez | 1174 | quant_mpeg_intra_mmx: |
159 : | |||
160 : | edgomez | 1192 | push ecx |
161 : | push esi | ||
162 : | push edi | ||
163 : | edgomez | 1174 | |
164 : | edgomez | 1192 | mov edi, [esp + 12 + 4] ; coeff |
165 : | mov esi, [esp + 12 + 8] ; data | ||
166 : | mov eax, [esp + 12 + 12] ; quant | ||
167 : | edgomez | 1174 | |
168 : | edgomez | 1192 | movq mm5, [quantd + eax * 8 - 8] ; quantd -> mm5 |
169 : | edgomez | 1174 | |
170 : | edgomez | 1192 | xor ecx, ecx |
171 : | cmp al, 1 | ||
172 : | jz near .q1loop | ||
173 : | edgomez | 1174 | |
174 : | edgomez | 1192 | cmp al, 2 |
175 : | jz near .q2loop | ||
176 : | edgomez | 1174 | |
177 : | edgomez | 1192 | movq mm7, [mmx_div + eax * 8 - 8] ; multipliers[quant] -> mm7 |
178 : | |||
179 : | ALIGN 16 | ||
180 : | edgomez | 1174 | .loop |
181 : | edgomez | 1192 | movq mm0, [esi + 8*ecx] ; mm0 = [1st] |
182 : | movq mm3, [esi + 8*ecx + 8] ; | ||
183 : | pxor mm1, mm1 ; mm1 = 0 | ||
184 : | pxor mm4, mm4 | ||
185 : | pcmpgtw mm1, mm0 ; mm1 = (0 > mm0) | ||
186 : | pcmpgtw mm4, mm3 | ||
187 : | pxor mm0, mm1 ; mm0 = |mm0| | ||
188 : | pxor mm3, mm4 ; | ||
189 : | psubw mm0, mm1 ; displace | ||
190 : | psubw mm3, mm4 ; | ||
191 : | psllw mm0, 4 ; level << 4 | ||
192 : | psllw mm3, 4 | ||
193 : | movq mm2, [intra_matrix + 8*ecx] | ||
194 : | psrlw mm2, 1 ; intra_matrix[i]>>1 | ||
195 : | paddw mm0, mm2 | ||
196 : | movq mm2, [intra_matrix_fix + ecx*8] | ||
197 : | pmulhw mm0, mm2 ; (level<<4 + intra_matrix[i]>>1) / intra_matrix[i] | ||
198 : | movq mm2, [intra_matrix + 8*ecx + 8] | ||
199 : | psrlw mm2, 1 | ||
200 : | paddw mm3, mm2 | ||
201 : | movq mm2, [intra_matrix_fix + ecx*8 + 8] | ||
202 : | pmulhw mm3, mm2 | ||
203 : | paddw mm0, mm5 ; + quantd | ||
204 : | paddw mm3, mm5 | ||
205 : | pmulhw mm0, mm7 ; mm0 = (mm0 / 2Q) >> 16 | ||
206 : | pmulhw mm3, mm7 ; | ||
207 : | psrlw mm0, 1 ; additional shift by 1 => 16 + 1 = 17 | ||
208 : | psrlw mm3, 1 | ||
209 : | pxor mm0, mm1 ; mm0 *= sign(mm0) | ||
210 : | pxor mm3, mm4 ; | ||
211 : | psubw mm0, mm1 ; undisplace | ||
212 : | psubw mm3, mm4 ; | ||
213 : | edgomez | 1174 | |
214 : | edgomez | 1192 | movq [edi + 8*ecx], mm0 |
215 : | movq [edi + 8*ecx + 8], mm3 | ||
216 : | edgomez | 1174 | |
217 : | edgomez | 1192 | add ecx,2 |
218 : | cmp ecx,16 | ||
219 : | jnz near .loop | ||
220 : | edgomez | 1174 | |
221 : | edgomez | 1192 | .done |
222 : | ; caclulate data[0] // (int32_t)dcscalar) | ||
223 : | mov ecx, [esp + 12 + 16] ; dcscalar | ||
224 : | mov edx, ecx | ||
225 : | movsx eax, word [esi] ; data[0] | ||
226 : | shr edx, 1 ; edx = dcscalar /2 | ||
227 : | cmp eax, 0 | ||
228 : | jg .gtzero | ||
229 : | edgomez | 1174 | |
230 : | edgomez | 1192 | sub eax, edx |
231 : | jmp short .mul | ||
232 : | edgomez | 1174 | .gtzero |
233 : | edgomez | 1192 | add eax, edx |
234 : | edgomez | 1174 | .mul |
235 : | edgomez | 1192 | cdq ; expand eax -> edx:eax |
236 : | idiv ecx ; eax = edx:eax / dcscalar | ||
237 : | edgomez | 1174 | |
238 : | edgomez | 1192 | mov [edi], ax ; coeff[0] = ax |
239 : | edgomez | 1174 | |
240 : | edgomez | 1192 | pop edi |
241 : | pop esi | ||
242 : | pop ecx | ||
243 : | edgomez | 1174 | |
244 : | edgomez | 1192 | xor eax, eax ; return(0); |
245 : | ret | ||
246 : | |||
247 : | ALIGN 16 | ||
248 : | edgomez | 1174 | .q1loop |
249 : | edgomez | 1192 | movq mm0, [esi + 8*ecx] ; mm0 = [1st] |
250 : | movq mm3, [esi + 8*ecx + 8] ; | ||
251 : | pxor mm1, mm1 ; mm1 = 0 | ||
252 : | pxor mm4, mm4 ; | ||
253 : | pcmpgtw mm1, mm0 ; mm1 = (0 > mm0) | ||
254 : | pcmpgtw mm4, mm3 ; | ||
255 : | pxor mm0, mm1 ; mm0 = |mm0| | ||
256 : | pxor mm3, mm4 ; | ||
257 : | psubw mm0, mm1 ; displace | ||
258 : | psubw mm3, mm4 ; | ||
259 : | psllw mm0, 4 | ||
260 : | psllw mm3, 4 | ||
261 : | movq mm2, [intra_matrix + 8*ecx] | ||
262 : | psrlw mm2, 1 | ||
263 : | paddw mm0, mm2 | ||
264 : | movq mm2, [intra_matrix_fix + ecx*8] | ||
265 : | pmulhw mm0, mm2 ; (level<<4 + intra_matrix[i]>>1) / intra_matrix[i] | ||
266 : | movq mm2, [intra_matrix + 8*ecx + 8] | ||
267 : | psrlw mm2, 1 | ||
268 : | paddw mm3, mm2 | ||
269 : | movq mm2, [intra_matrix_fix + ecx*8 + 8] | ||
270 : | pmulhw mm3, mm2 | ||
271 : | paddw mm0, mm5 | ||
272 : | paddw mm3, mm5 | ||
273 : | psrlw mm0, 1 ; mm0 >>= 1 (/2) | ||
274 : | psrlw mm3, 1 ; | ||
275 : | pxor mm0, mm1 ; mm0 *= sign(mm0) | ||
276 : | pxor mm3, mm4 ; | ||
277 : | psubw mm0, mm1 ; undisplace | ||
278 : | psubw mm3, mm4 ; | ||
279 : | movq [edi + 8*ecx], mm0 | ||
280 : | movq [edi + 8*ecx + 8], mm3 | ||
281 : | edgomez | 1174 | |
282 : | edgomez | 1192 | add ecx, 2 |
283 : | cmp ecx, 16 | ||
284 : | jnz near .q1loop | ||
285 : | jmp near .done | ||
286 : | edgomez | 1174 | |
287 : | |||
288 : | edgomez | 1192 | ALIGN 16 |
289 : | edgomez | 1174 | .q2loop |
290 : | edgomez | 1192 | movq mm0, [esi + 8*ecx] ; mm0 = [1st] |
291 : | movq mm3, [esi + 8*ecx + 8] ; | ||
292 : | pxor mm1, mm1 ; mm1 = 0 | ||
293 : | pxor mm4, mm4 ; | ||
294 : | pcmpgtw mm1, mm0 ; mm1 = (0 > mm0) | ||
295 : | pcmpgtw mm4, mm3 ; | ||
296 : | pxor mm0, mm1 ; mm0 = |mm0| | ||
297 : | pxor mm3, mm4 ; | ||
298 : | psubw mm0, mm1 ; displace | ||
299 : | psubw mm3, mm4 ; | ||
300 : | psllw mm0, 4 | ||
301 : | psllw mm3, 4 | ||
302 : | movq mm2, [intra_matrix + 8*ecx] | ||
303 : | psrlw mm2, 1 | ||
304 : | paddw mm0, mm2 | ||
305 : | movq mm2, [intra_matrix_fix + ecx*8] | ||
306 : | pmulhw mm0, mm2 ; (level<<4 + intra_matrix[i]>>1) / intra_matrix[i] | ||
307 : | movq mm2, [intra_matrix + 8*ecx + 8] | ||
308 : | psrlw mm2, 1 | ||
309 : | paddw mm3, mm2 | ||
310 : | movq mm2, [intra_matrix_fix + ecx*8 + 8] | ||
311 : | pmulhw mm3, mm2 | ||
312 : | paddw mm0, mm5 | ||
313 : | paddw mm3, mm5 | ||
314 : | psrlw mm0, 2 ; mm0 >>= 1 (/4) | ||
315 : | psrlw mm3, 2 ; | ||
316 : | pxor mm0, mm1 ; mm0 *= sign(mm0) | ||
317 : | pxor mm3, mm4 ; | ||
318 : | psubw mm0, mm1 ; undisplace | ||
319 : | psubw mm3, mm4 ; | ||
320 : | movq [edi + 8*ecx], mm0 | ||
321 : | movq [edi + 8*ecx + 8], mm3 | ||
322 : | edgomez | 1174 | |
323 : | edgomez | 1192 | add ecx,2 |
324 : | cmp ecx,16 | ||
325 : | jnz near .q2loop | ||
326 : | jmp near .done | ||
327 : | edgomez | 1174 | |
328 : | |||
329 : | edgomez | 1192 | ;----------------------------------------------------------------------------- |
330 : | edgomez | 1174 | ; |
331 : | edgomez | 1176 | ; uint32_t quant_mpeg_inter_mmx(int16_t * coeff, |
332 : | ; const int16_t const * data, | ||
333 : | ; const uint32_t quant); | ||
334 : | edgomez | 1174 | ; |
335 : | edgomez | 1192 | ;----------------------------------------------------------------------------- |
336 : | edgomez | 1174 | |
337 : | edgomez | 1192 | ALIGN 16 |
338 : | edgomez | 1174 | quant_mpeg_inter_mmx: |
339 : | |||
340 : | edgomez | 1192 | push ecx |
341 : | push esi | ||
342 : | push edi | ||
343 : | edgomez | 1174 | |
344 : | edgomez | 1192 | mov edi, [esp + 12 + 4] ; coeff |
345 : | mov esi, [esp + 12 + 8] ; data | ||
346 : | mov eax, [esp + 12 + 12] ; quant | ||
347 : | edgomez | 1174 | |
348 : | edgomez | 1192 | xor ecx, ecx |
349 : | edgomez | 1174 | |
350 : | edgomez | 1192 | pxor mm5, mm5 ; sum |
351 : | edgomez | 1174 | |
352 : | edgomez | 1192 | cmp al, 1 |
353 : | jz near .q1loop | ||
354 : | edgomez | 1174 | |
355 : | edgomez | 1192 | cmp al, 2 |
356 : | jz near .q2loop | ||
357 : | edgomez | 1174 | |
358 : | edgomez | 1192 | movq mm7, [mmx_div + eax * 8 - 8] ; divider |
359 : | edgomez | 1174 | |
360 : | edgomez | 1192 | ALIGN 16 |
361 : | edgomez | 1174 | .loop |
362 : | edgomez | 1192 | movq mm0, [esi + 8*ecx] ; mm0 = [1st] |
363 : | movq mm3, [esi + 8*ecx + 8] ; | ||
364 : | pxor mm1, mm1 ; mm1 = 0 | ||
365 : | pxor mm4, mm4 ; | ||
366 : | pcmpgtw mm1, mm0 ; mm1 = (0 > mm0) | ||
367 : | pcmpgtw mm4, mm3 ; | ||
368 : | pxor mm0, mm1 ; mm0 = |mm0| | ||
369 : | pxor mm3, mm4 ; | ||
370 : | psubw mm0, mm1 ; displace | ||
371 : | psubw mm3, mm4 ; | ||
372 : | psllw mm0, 4 | ||
373 : | psllw mm3, 4 | ||
374 : | movq mm2, [inter_matrix + 8*ecx] | ||
375 : | psrlw mm2, 1 | ||
376 : | paddw mm0, mm2 | ||
377 : | movq mm2, [inter_matrix_fix + ecx*8] | ||
378 : | pmulhw mm0, mm2 ; (level<<4 + inter_matrix[i]>>1) / inter_matrix[i] | ||
379 : | movq mm2, [inter_matrix + 8*ecx + 8] | ||
380 : | psrlw mm2, 1 | ||
381 : | paddw mm3, mm2 | ||
382 : | movq mm2, [inter_matrix_fix + ecx*8 + 8] | ||
383 : | pmulhw mm3, mm2 | ||
384 : | pmulhw mm0, mm7 ; mm0 = (mm0 / 2Q) >> 16 | ||
385 : | pmulhw mm3, mm7 ; | ||
386 : | psrlw mm0, 1 ; additional shift by 1 => 16 + 1 = 17 | ||
387 : | psrlw mm3, 1 | ||
388 : | paddw mm5, mm0 ; sum += mm0 | ||
389 : | pxor mm0, mm1 ; mm0 *= sign(mm0) | ||
390 : | paddw mm5, mm3 ; | ||
391 : | pxor mm3, mm4 ; | ||
392 : | psubw mm0, mm1 ; undisplace | ||
393 : | psubw mm3, mm4 | ||
394 : | movq [edi + 8*ecx], mm0 | ||
395 : | movq [edi + 8*ecx + 8], mm3 | ||
396 : | edgomez | 1174 | |
397 : | edgomez | 1192 | add ecx, 2 |
398 : | cmp ecx, 16 | ||
399 : | jnz near .loop | ||
400 : | edgomez | 1174 | |
401 : | .done | ||
402 : | edgomez | 1192 | pmaddwd mm5, [mmx_one] |
403 : | movq mm0, mm5 | ||
404 : | psrlq mm5, 32 | ||
405 : | paddd mm0, mm5 | ||
406 : | movd eax, mm0 ; return sum | ||
407 : | edgomez | 1174 | |
408 : | edgomez | 1192 | pop edi |
409 : | pop esi | ||
410 : | pop ecx | ||
411 : | edgomez | 1174 | |
412 : | edgomez | 1192 | ret |
413 : | edgomez | 1174 | |
414 : | edgomez | 1192 | ALIGN 16 |
415 : | edgomez | 1174 | .q1loop |
416 : | edgomez | 1192 | movq mm0, [esi + 8*ecx] ; mm0 = [1st] |
417 : | movq mm3, [esi + 8*ecx+ 8] | ||
418 : | pxor mm1, mm1 ; mm1 = 0 | ||
419 : | pxor mm4, mm4 ; | ||
420 : | pcmpgtw mm1, mm0 ; mm1 = (0 > mm0) | ||
421 : | pcmpgtw mm4, mm3 ; | ||
422 : | pxor mm0, mm1 ; mm0 = |mm0| | ||
423 : | pxor mm3, mm4 ; | ||
424 : | psubw mm0, mm1 ; displace | ||
425 : | psubw mm3, mm4 ; | ||
426 : | psllw mm0, 4 | ||
427 : | psllw mm3, 4 | ||
428 : | movq mm2, [inter_matrix + 8*ecx] | ||
429 : | psrlw mm2, 1 | ||
430 : | paddw mm0, mm2 | ||
431 : | movq mm2, [inter_matrix_fix + ecx*8] | ||
432 : | pmulhw mm0, mm2 ; (level<<4 + inter_matrix[i]>>1) / inter_matrix[i] | ||
433 : | movq mm2, [inter_matrix + 8*ecx + 8] | ||
434 : | psrlw mm2, 1 | ||
435 : | paddw mm3, mm2 | ||
436 : | movq mm2, [inter_matrix_fix + ecx*8 + 8] | ||
437 : | pmulhw mm3, mm2 | ||
438 : | psrlw mm0, 1 ; mm0 >>= 1 (/2) | ||
439 : | psrlw mm3, 1 ; | ||
440 : | paddw mm5, mm0 ; sum += mm0 | ||
441 : | pxor mm0, mm1 ; mm0 *= sign(mm0) | ||
442 : | paddw mm5, mm3 ; | ||
443 : | pxor mm3, mm4 ; | ||
444 : | psubw mm0, mm1 ; undisplace | ||
445 : | psubw mm3, mm4 | ||
446 : | movq [edi + 8*ecx], mm0 | ||
447 : | movq [edi + 8*ecx + 8], mm3 | ||
448 : | edgomez | 1174 | |
449 : | edgomez | 1192 | add ecx, 2 |
450 : | cmp ecx, 16 | ||
451 : | jnz near .q1loop | ||
452 : | edgomez | 1174 | |
453 : | edgomez | 1192 | jmp .done |
454 : | edgomez | 1174 | |
455 : | |||
456 : | edgomez | 1192 | ALIGN 16 |
457 : | edgomez | 1174 | .q2loop |
458 : | edgomez | 1192 | movq mm0, [esi + 8*ecx] ; mm0 = [1st] |
459 : | movq mm3, [esi + 8*ecx+ 8] | ||
460 : | pxor mm1, mm1 ; mm1 = 0 | ||
461 : | pxor mm4, mm4 ; | ||
462 : | pcmpgtw mm1, mm0 ; mm1 = (0 > mm0) | ||
463 : | pcmpgtw mm4, mm3 ; | ||
464 : | pxor mm0, mm1 ; mm0 = |mm0| | ||
465 : | pxor mm3, mm4 ; | ||
466 : | psubw mm0, mm1 ; displace | ||
467 : | psubw mm3, mm4 ; | ||
468 : | psllw mm0, 4 | ||
469 : | psllw mm3, 4 | ||
470 : | movq mm2, [inter_matrix + 8*ecx] | ||
471 : | psrlw mm2, 1 | ||
472 : | paddw mm0, mm2 | ||
473 : | movq mm2, [inter_matrix_fix + ecx*8] | ||
474 : | pmulhw mm0, mm2 ; (level<<4 + inter_matrix[i]>>1) / inter_matrix[i] | ||
475 : | movq mm2, [inter_matrix + 8*ecx + 8] | ||
476 : | psrlw mm2, 1 | ||
477 : | paddw mm3, mm2 | ||
478 : | movq mm2, [inter_matrix_fix + ecx*8 + 8] | ||
479 : | pmulhw mm3, mm2 | ||
480 : | psrlw mm0, 2 ; mm0 >>= 1 (/2) | ||
481 : | psrlw mm3, 2 ; | ||
482 : | paddw mm5, mm0 ; sum += mm0 | ||
483 : | pxor mm0, mm1 ; mm0 *= sign(mm0) | ||
484 : | paddw mm5, mm3 ; | ||
485 : | pxor mm3, mm4 ; | ||
486 : | psubw mm0, mm1 ; undisplace | ||
487 : | psubw mm3, mm4 | ||
488 : | movq [edi + 8*ecx], mm0 | ||
489 : | movq [edi + 8*ecx + 8], mm3 | ||
490 : | edgomez | 1174 | |
491 : | edgomez | 1192 | add ecx, 2 |
492 : | cmp ecx, 16 | ||
493 : | jnz near .q2loop | ||
494 : | edgomez | 1174 | |
495 : | edgomez | 1192 | jmp .done |
496 : | edgomez | 1174 | |
497 : | |||
498 : | edgomez | 1192 | ;----------------------------------------------------------------------------- |
499 : | edgomez | 1174 | ; |
500 : | edgomez | 1176 | ; uint32_t dequant_mpeg_intra_mmx(int16_t *data, |
501 : | ; const int16_t const *coeff, | ||
502 : | ; const uint32_t quant, | ||
503 : | ; const uint32_t dcscalar); | ||
504 : | edgomez | 1174 | ; |
505 : | edgomez | 1192 | ;----------------------------------------------------------------------------- |
506 : | edgomez | 1174 | |
507 : | ; Note: in order to saturate 'easily', we pre-shift the quantifier | ||
508 : | ; by 4. Then, the high-word of (coeff[]*matrix[i]*quant) are used to | ||
509 : | ; build a saturating mask. It is non-zero only when an overflow occured. | ||
510 : | ; We thus avoid packing/unpacking toward double-word. | ||
511 : | ; Moreover, we perform the mult (matrix[i]*quant) first, instead of, e.g., | ||
512 : | ; (coeff[i]*matrix[i]). This is less prone to overflow if coeff[] are not | ||
513 : | ; checked. Input ranges are: coeff in [-127,127], inter_matrix in [1..255],a | ||
514 : | edgomez | 1192 | ; and quant in [1..31]. |
515 : | edgomez | 1174 | ; |
516 : | ; The original loop is: | ||
517 : | ; | ||
518 : | %if 0 | ||
519 : | edgomez | 1192 | movq mm0, [ecx+8*eax + 8*16] ; mm0 = coeff[i] |
520 : | pxor mm1, mm1 | ||
521 : | pcmpgtw mm1, mm0 | ||
522 : | pxor mm0, mm1 ; change sign if negative | ||
523 : | psubw mm0, mm1 ; -> mm0 = abs(coeff[i]), mm1 = sign of coeff[i] | ||
524 : | edgomez | 1174 | |
525 : | edgomez | 1192 | movq mm2, mm7 ; mm2 = quant |
526 : | pmullw mm2, [intra_matrix + 8*eax + 8*16 ] ; matrix[i]*quant. | ||
527 : | edgomez | 1174 | |
528 : | edgomez | 1192 | movq mm6, mm2 |
529 : | pmulhw mm2, mm0 ; high of coeff*(matrix*quant) (should be 0 if no overflow) | ||
530 : | pmullw mm0, mm6 ; low of coeff*(matrix*quant) | ||
531 : | edgomez | 1174 | |
532 : | edgomez | 1192 | pxor mm5, mm5 |
533 : | pcmpgtw mm2, mm5 ; otherflow? | ||
534 : | psrlw mm2, 5 ; =0 if no clamp, 2047 otherwise | ||
535 : | psrlw mm0, 5 | ||
536 : | paddw mm0, mm1 ; start restoring sign | ||
537 : | por mm0, mm2 ; saturate to 2047 if needed | ||
538 : | pxor mm0, mm1 ; finish negating back | ||
539 : | edgomez | 1174 | |
540 : | edgomez | 1192 | movq [edx + 8*eax + 8*16], mm0 ; data[i] |
541 : | add eax, 1 | ||
542 : | edgomez | 1174 | %endif |
543 : | |||
544 : | ;******************************************************************** | ||
545 : | |||
546 : | edgomez | 1192 | ALIGN 16 |
547 : | edgomez | 1174 | dequant_mpeg_intra_mmx: |
548 : | |||
549 : | edgomez | 1192 | mov edx, [esp+4] ; data |
550 : | mov ecx, [esp+8] ; coeff | ||
551 : | mov eax, [esp+12] ; quant | ||
552 : | edgomez | 1174 | |
553 : | edgomez | 1192 | movq mm7, [mmx_mul_quant + eax*8 - 8] |
554 : | mov eax, -16 ; to keep ALIGNed, we regularly process coeff[0] | ||
555 : | psllw mm7, 2 ; << 2. See comment. | ||
556 : | pxor mm6, mm6 ; this is a NOP | ||
557 : | edgomez | 1174 | |
558 : | edgomez | 1192 | ALIGN 16 |
559 : | edgomez | 1174 | .loop |
560 : | edgomez | 1192 | movq mm0, [ecx+8*eax + 8*16] ; mm0 = c = coeff[i] |
561 : | movq mm3, [ecx+8*eax + 8*16 +8]; mm3 = c' = coeff[i+1] | ||
562 : | pxor mm1, mm1 | ||
563 : | pxor mm4, mm4 | ||
564 : | pcmpgtw mm1, mm0 ; mm1 = sgn(c) | ||
565 : | movq mm2, mm7 ; mm2 = quant | ||
566 : | edgomez | 1174 | |
567 : | edgomez | 1192 | pcmpgtw mm4, mm3 ; mm4 = sgn(c') |
568 : | pmullw mm2, [intra_matrix + 8*eax + 8*16 ] ; matrix[i]*quant | ||
569 : | edgomez | 1174 | |
570 : | edgomez | 1192 | pxor mm0, mm1 ; negate if negative |
571 : | pxor mm3, mm4 ; negate if negative | ||
572 : | edgomez | 1174 | |
573 : | edgomez | 1192 | psubw mm0, mm1 |
574 : | psubw mm3, mm4 | ||
575 : | edgomez | 1174 | |
576 : | edgomez | 1192 | ; we're short on register, here. Poor pairing... |
577 : | edgomez | 1174 | |
578 : | edgomez | 1192 | movq mm5, mm2 |
579 : | pmullw mm2, mm0 ; low of coeff*(matrix*quant) | ||
580 : | edgomez | 1174 | |
581 : | edgomez | 1192 | pmulhw mm0, mm5 ; high of coeff*(matrix*quant) |
582 : | movq mm5, mm7 ; mm2 = quant | ||
583 : | edgomez | 1174 | |
584 : | edgomez | 1192 | pmullw mm5, [intra_matrix + 8*eax + 8*16 +8] ; matrix[i+1]*quant |
585 : | edgomez | 1174 | |
586 : | edgomez | 1192 | movq mm6, mm5 |
587 : | add eax,2 ; z-flag will be tested later | ||
588 : | edgomez | 1174 | |
589 : | edgomez | 1192 | pmullw mm6, mm3 ; low of coeff*(matrix*quant) |
590 : | pmulhw mm3, mm5 ; high of coeff*(matrix*quant) | ||
591 : | edgomez | 1174 | |
592 : | edgomez | 1192 | pcmpgtw mm0, [zero] |
593 : | paddusw mm2, mm0 | ||
594 : | psrlw mm2, 5 | ||
595 : | edgomez | 1174 | |
596 : | edgomez | 1192 | pcmpgtw mm3, [zero] |
597 : | paddusw mm6, mm3 | ||
598 : | psrlw mm6, 5 | ||
599 : | edgomez | 1174 | |
600 : | edgomez | 1192 | pxor mm2, mm1 ; start negating back |
601 : | pxor mm6, mm4 ; start negating back | ||
602 : | edgomez | 1174 | |
603 : | edgomez | 1192 | psubusw mm1, mm0 |
604 : | psubusw mm4, mm3 | ||
605 : | edgomez | 1174 | |
606 : | edgomez | 1192 | psubw mm2, mm1 ; finish negating back |
607 : | psubw mm6, mm4 ; finish negating back | ||
608 : | edgomez | 1174 | |
609 : | edgomez | 1192 | movq [edx + 8*eax + 8*16 -2*8 ], mm2 ; data[i] |
610 : | movq [edx + 8*eax + 8*16 -2*8 +8], mm6 ; data[i+1] | ||
611 : | edgomez | 1174 | |
612 : | edgomez | 1192 | jnz near .loop |
613 : | edgomez | 1174 | |
614 : | edgomez | 1192 | ; deal with DC |
615 : | movd mm0, [ecx] | ||
616 : | pmullw mm0, [esp+16] ; dcscalar | ||
617 : | movq mm2, [mmx_32767_minus_2047] | ||
618 : | paddsw mm0, mm2 | ||
619 : | psubsw mm0, mm2 | ||
620 : | movq mm2, [mmx_32768_minus_2048] | ||
621 : | psubsw mm0, mm2 | ||
622 : | paddsw mm0, mm2 | ||
623 : | movd eax, mm0 | ||
624 : | mov [edx], ax | ||
625 : | |||
626 : | xor eax, eax | ||
627 : | ret | ||
628 : | |||
629 : | ;----------------------------------------------------------------------------- | ||
630 : | edgomez | 1174 | ; |
631 : | edgomez | 1176 | ; uint32_t dequant_mpeg_inter_mmx(int16_t * data, |
632 : | ; const int16_t * const coeff, | ||
633 : | ; const uint32_t quant); | ||
634 : | edgomez | 1174 | ; |
635 : | edgomez | 1192 | ;----------------------------------------------------------------------------- |
636 : | edgomez | 1174 | |
637 : | ; Note: We use (2*c + sgn(c) - sgn(-c)) as multiplier | ||
638 : | ; so we handle the 3 cases: c<0, c==0, and c>0 in one shot. | ||
639 : | ; sgn(x) is the result of 'pcmpgtw 0,x': 0 if x>=0, -1 if x<0. | ||
640 : | ; It's mixed with the extraction of the absolute value. | ||
641 : | |||
642 : | edgomez | 1192 | ALIGN 16 |
643 : | edgomez | 1174 | dequant_mpeg_inter_mmx: |
644 : | |||
645 : | edgomez | 1192 | mov edx, [esp+ 4] ; data |
646 : | mov ecx, [esp+ 8] ; coeff | ||
647 : | mov eax, [esp+12] ; quant | ||
648 : | movq mm7, [mmx_mul_quant + eax*8 - 8] | ||
649 : | mov eax, -16 | ||
650 : | paddw mm7, mm7 ; << 1 | ||
651 : | pxor mm6, mm6 ; mismatch sum | ||
652 : | edgomez | 1174 | |
653 : | edgomez | 1192 | ALIGN 16 |
654 : | edgomez | 1174 | .loop |
655 : | edgomez | 1192 | movq mm0, [ecx+8*eax + 8*16 ] ; mm0 = coeff[i] |
656 : | movq mm2, [ecx+8*eax + 8*16 +8] ; mm2 = coeff[i+1] | ||
657 : | add eax, 2 | ||
658 : | edgomez | 1174 | |
659 : | edgomez | 1192 | pxor mm1, mm1 |
660 : | pxor mm3, mm3 | ||
661 : | pcmpgtw mm1, mm0 ; mm1 = sgn(c) (preserved) | ||
662 : | pcmpgtw mm3, mm2 ; mm3 = sgn(c') (preserved) | ||
663 : | paddsw mm0, mm1 ; c += sgn(c) | ||
664 : | paddsw mm2, mm3 ; c += sgn(c') | ||
665 : | paddw mm0, mm0 ; c *= 2 | ||
666 : | paddw mm2, mm2 ; c'*= 2 | ||
667 : | edgomez | 1174 | |
668 : | edgomez | 1192 | pxor mm4, mm4 |
669 : | pxor mm5, mm5 | ||
670 : | psubw mm4, mm0 ; -c | ||
671 : | psubw mm5, mm2 ; -c' | ||
672 : | psraw mm4, 16 ; mm4 = sgn(-c) | ||
673 : | psraw mm5, 16 ; mm5 = sgn(-c') | ||
674 : | psubsw mm0, mm4 ; c -= sgn(-c) | ||
675 : | psubsw mm2, mm5 ; c' -= sgn(-c') | ||
676 : | pxor mm0, mm1 ; finish changing sign if needed | ||
677 : | pxor mm2, mm3 ; finish changing sign if needed | ||
678 : | edgomez | 1174 | |
679 : | ; we're short on register, here. Poor pairing... | ||
680 : | |||
681 : | edgomez | 1192 | movq mm4, mm7 ; (matrix*quant) |
682 : | pmullw mm4, [inter_matrix + 8*eax + 8*16 -2*8] | ||
683 : | movq mm5, mm4 | ||
684 : | pmulhw mm5, mm0 ; high of c*(matrix*quant) | ||
685 : | pmullw mm0, mm4 ; low of c*(matrix*quant) | ||
686 : | edgomez | 1174 | |
687 : | edgomez | 1192 | movq mm4, mm7 ; (matrix*quant) |
688 : | pmullw mm4, [inter_matrix + 8*eax + 8*16 -2*8 + 8] | ||
689 : | edgomez | 1174 | |
690 : | edgomez | 1192 | pcmpgtw mm5, [zero] |
691 : | paddusw mm0, mm5 | ||
692 : | psrlw mm0, 5 | ||
693 : | pxor mm0, mm1 ; start restoring sign | ||
694 : | psubusw mm1, mm5 | ||
695 : | edgomez | 1174 | |
696 : | edgomez | 1192 | movq mm5, mm4 |
697 : | pmulhw mm5, mm2 ; high of c*(matrix*quant) | ||
698 : | pmullw mm2, mm4 ; low of c*(matrix*quant) | ||
699 : | psubw mm0, mm1 ; finish restoring sign | ||
700 : | edgomez | 1174 | |
701 : | edgomez | 1192 | pcmpgtw mm5, [zero] |
702 : | paddusw mm2, mm5 | ||
703 : | psrlw mm2, 5 | ||
704 : | pxor mm2, mm3 ; start restoring sign | ||
705 : | psubusw mm3, mm5 | ||
706 : | psubw mm2, mm3 ; finish restoring sign | ||
707 : | edgomez | 1174 | |
708 : | edgomez | 1192 | pxor mm6, mm0 ; mismatch control |
709 : | movq [edx + 8*eax + 8*16 -2*8 ], mm0 ; data[i] | ||
710 : | pxor mm6, mm2 ; mismatch control | ||
711 : | movq [edx + 8*eax + 8*16 -2*8 +8], mm2 ; data[i+1] | ||
712 : | edgomez | 1174 | |
713 : | edgomez | 1192 | jnz near .loop |
714 : | edgomez | 1174 | |
715 : | ; mismatch control | ||
716 : | |||
717 : | edgomez | 1192 | movq mm0, mm6 |
718 : | psrlq mm0, 48 | ||
719 : | movq mm1, mm6 | ||
720 : | movq mm2, mm6 | ||
721 : | psrlq mm1, 32 | ||
722 : | pxor mm6, mm0 | ||
723 : | psrlq mm2, 16 | ||
724 : | pxor mm6, mm1 | ||
725 : | pxor mm6, mm2 | ||
726 : | movd eax, mm6 | ||
727 : | and eax, 1 | ||
728 : | xor eax, 1 | ||
729 : | xor word [edx + 2*63], ax | ||
730 : | edgomez | 1174 | |
731 : | edgomez | 1192 | xor eax, eax |
732 : | ret |
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