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1 : | edgomez | 1586 | ;/**************************************************************************** |
2 : | ; * | ||
3 : | ; * XVID MPEG-4 VIDEO CODEC | ||
4 : | ; * - 3dne Quantization/Dequantization - | ||
5 : | ; * | ||
6 : | ; * Copyright (C) 2002-2003 Peter Ross <pross@xvid.org> | ||
7 : | ; * 2002 Jaan Kalda | ||
8 : | ; * 2004 Andre Werthmann <wertmann@aei.mpg.de> | ||
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 : | ; * $Id: quantize_mpeg_xmm.asm,v 1.1 2005-01-05 23:02:15 edgomez Exp $ | ||
25 : | ; * | ||
26 : | ; ***************************************************************************/ | ||
27 : | |||
28 : | ; _3dne functions are compatible with iSSE, but are optimized specifically | ||
29 : | ; for K7 pipelines | ||
30 : | |||
31 : | %define SATURATE | ||
32 : | |||
33 : | BITS 64 | ||
34 : | |||
35 : | %macro cglobal 1 | ||
36 : | %ifdef PREFIX | ||
37 : | %ifdef MARK_FUNCS | ||
38 : | global _%1:function %1.endfunc-%1 | ||
39 : | %define %1 _%1:function %1.endfunc-%1 | ||
40 : | %else | ||
41 : | global _%1 | ||
42 : | %define %1 _%1 | ||
43 : | %endif | ||
44 : | %else | ||
45 : | %ifdef MARK_FUNCS | ||
46 : | global %1:function %1.endfunc-%1 | ||
47 : | %else | ||
48 : | global %1 | ||
49 : | %endif | ||
50 : | %endif | ||
51 : | %endmacro | ||
52 : | |||
53 : | ;============================================================================= | ||
54 : | ; Local data | ||
55 : | ;============================================================================= | ||
56 : | |||
57 : | %ifdef FORMAT_COFF | ||
58 : | SECTION .rodata | ||
59 : | %else | ||
60 : | SECTION .rodata align=16 | ||
61 : | %endif | ||
62 : | |||
63 : | ALIGN 8 | ||
64 : | mmzero: | ||
65 : | dd 0,0 | ||
66 : | mmx_one: | ||
67 : | times 4 dw 1 | ||
68 : | |||
69 : | ;----------------------------------------------------------------------------- | ||
70 : | ; divide by 2Q table | ||
71 : | ;----------------------------------------------------------------------------- | ||
72 : | |||
73 : | ALIGN 16 | ||
74 : | mmx_divs: ;i>2 | ||
75 : | %assign i 1 | ||
76 : | %rep 31 | ||
77 : | times 4 dw ((1 << 15) / i + 1) | ||
78 : | %assign i i+1 | ||
79 : | %endrep | ||
80 : | |||
81 : | ALIGN 16 | ||
82 : | mmx_div: ;quant>2 | ||
83 : | times 4 dw 65535 ; the div by 2 formula will overflow for the case | ||
84 : | ; quant=1 but we don't care much because quant=1 | ||
85 : | ; is handled by a different piece of code that | ||
86 : | ; doesn't use this table. | ||
87 : | %assign quant 2 | ||
88 : | %rep 31 | ||
89 : | times 4 dw ((1 << 16) / quant + 1) | ||
90 : | %assign quant quant+1 | ||
91 : | %endrep | ||
92 : | |||
93 : | %macro FIXX 1 | ||
94 : | dw (1 << 16) / (%1) + 1 | ||
95 : | %endmacro | ||
96 : | |||
97 : | %define nop4 db 08Dh, 074h, 026h,0 | ||
98 : | %define nop3 add esp, byte 0 | ||
99 : | %define nop2 mov esp, esp | ||
100 : | %define nop7 db 08dh, 02ch, 02dh,0,0,0,0 | ||
101 : | %define nop6 add ebp, dword 0 | ||
102 : | |||
103 : | ;----------------------------------------------------------------------------- | ||
104 : | ; quantd table | ||
105 : | ;----------------------------------------------------------------------------- | ||
106 : | |||
107 : | %define VM18P 3 | ||
108 : | %define VM18Q 4 | ||
109 : | |||
110 : | ALIGN 16 | ||
111 : | quantd: | ||
112 : | %assign i 1 | ||
113 : | %rep 31 | ||
114 : | times 4 dw (((VM18P*i) + (VM18Q/2)) / VM18Q) | ||
115 : | %assign i i+1 | ||
116 : | %endrep | ||
117 : | |||
118 : | ;----------------------------------------------------------------------------- | ||
119 : | ; multiple by 2Q table | ||
120 : | ;----------------------------------------------------------------------------- | ||
121 : | |||
122 : | ALIGN 16 | ||
123 : | mmx_mul_quant: | ||
124 : | %assign i 1 | ||
125 : | %rep 31 | ||
126 : | times 4 dw i | ||
127 : | %assign i i+1 | ||
128 : | %endrep | ||
129 : | |||
130 : | ;----------------------------------------------------------------------------- | ||
131 : | ; saturation limits | ||
132 : | ;----------------------------------------------------------------------------- | ||
133 : | |||
134 : | ALIGN 16 | ||
135 : | mmx_32767_minus_2047: | ||
136 : | times 4 dw (32767-2047) | ||
137 : | mmx_32768_minus_2048: | ||
138 : | times 4 dw (32768-2048) | ||
139 : | mmx_2047: | ||
140 : | times 4 dw 2047 | ||
141 : | mmx_minus_2048: | ||
142 : | times 4 dw (-2048) | ||
143 : | zero: | ||
144 : | times 4 dw 0 | ||
145 : | |||
146 : | int_div: | ||
147 : | dd 0 | ||
148 : | %assign i 1 | ||
149 : | %rep 255 | ||
150 : | dd (1 << 17) / ( i) + 1 | ||
151 : | %assign i i+1 | ||
152 : | %endrep | ||
153 : | |||
154 : | ;============================================================================= | ||
155 : | ; Code | ||
156 : | ;============================================================================= | ||
157 : | |||
158 : | SECTION .text align=16 | ||
159 : | |||
160 : | cglobal quant_mpeg_intra_x86_64 | ||
161 : | cglobal quant_mpeg_inter_x86_64 | ||
162 : | cglobal dequant_mpeg_intra_x86_64 | ||
163 : | cglobal dequant_mpeg_inter_x86_64 | ||
164 : | |||
165 : | ;----------------------------------------------------------------------------- | ||
166 : | ; | ||
167 : | ; uint32_t quant_mpeg_intra_x86_64(int16_t * coeff, | ||
168 : | ; const int16_t const * data, | ||
169 : | ; const uint32_t quant, | ||
170 : | ; const uint32_t dcscalar, | ||
171 : | ; const uint16_t *mpeg_matrices); | ||
172 : | ; Ported from its 32bit xmm cousin | ||
173 : | ;----------------------------------------------------------------------------- | ||
174 : | |||
175 : | ALIGN 16 | ||
176 : | quant_mpeg_intra_x86_64: | ||
177 : | mov rax, rsi ; data | ||
178 : | mov r9, rcx ; save dcscalar | ||
179 : | mov rcx, rdx ; quant | ||
180 : | mov rdx, rdi ; coeff | ||
181 : | |||
182 : | push rbx | ||
183 : | |||
184 : | mov rdi, r8 ; mpeg_quant_matrices | ||
185 : | |||
186 : | mov rsi, -14 | ||
187 : | pxor mm0, mm0 | ||
188 : | pxor mm3, mm3 | ||
189 : | cmp rcx, byte 1 | ||
190 : | je near .q1loop | ||
191 : | cmp rcx, byte 19 | ||
192 : | jg near .lloop | ||
193 : | |||
194 : | ALIGN 16 | ||
195 : | .loop | ||
196 : | movq mm1, [rax + 8*rsi+112] ; mm0 = [1st] | ||
197 : | psubw mm0, mm1 ;-mm1 | ||
198 : | movq mm4, [rax + 8*rsi + 120] ; | ||
199 : | psubw mm3, mm4 ;-mm4 | ||
200 : | pmaxsw mm0, mm1 ;|src| | ||
201 : | pmaxsw mm3,mm4 | ||
202 : | ; nop2 | ||
203 : | psraw mm1, 15 ;sign src | ||
204 : | psraw mm4, 15 | ||
205 : | psllw mm0, 4 ;level << 4 ; | ||
206 : | psllw mm3, 4 | ||
207 : | paddw mm0, [rdi + 128 + 8*rsi+112] | ||
208 : | paddw mm3, [rdi + 128 + 8*rsi+120] | ||
209 : | movq mm5, [rdi + 384 + 8*rsi+112] | ||
210 : | movq mm7, [rdi + 384 + 8*rsi+120] | ||
211 : | pmulhuw mm5, mm0 | ||
212 : | pmulhuw mm7, mm3 | ||
213 : | ; mov esp, esp | ||
214 : | movq mm2, [rdi + 8*rsi+112] | ||
215 : | movq mm6, [rdi + 8*rsi+120] | ||
216 : | pmullw mm2, mm5 | ||
217 : | pmullw mm6, mm7 | ||
218 : | psubw mm0, mm2 | ||
219 : | psubw mm3, mm6 | ||
220 : | ; nop4 | ||
221 : | lea r11, [quantd wrt rip] | ||
222 : | movq mm2, [r11 + rcx * 8 - 8] | ||
223 : | lea r11, [mmx_divs wrt rip] | ||
224 : | movq mm6, [r11 + rcx * 8 - 8] | ||
225 : | paddw mm5, mm2 | ||
226 : | paddw mm7, mm2 | ||
227 : | ; mov esp, esp | ||
228 : | pmulhuw mm0, [rdi + 256 + 8*rsi+112] | ||
229 : | pmulhuw mm3, [rdi + 256 + 8*rsi+120] | ||
230 : | paddw mm5, mm0 | ||
231 : | paddw mm7, mm3 | ||
232 : | pxor mm0, mm0 | ||
233 : | pxor mm3, mm3 | ||
234 : | pmulhuw mm5, mm6 ; mm0 = (mm0 / 2Q) >> 16 | ||
235 : | pmulhuw mm7, mm6 ; (level + quantd) / quant (0<quant<32) | ||
236 : | pxor mm5, mm1 ; mm0 *= sign(mm0) | ||
237 : | pxor mm7, mm4 ; | ||
238 : | psubw mm5, mm1 ; undisplace | ||
239 : | psubw mm7, mm4 ; | ||
240 : | movq [rdx + 8*rsi+112], mm5 | ||
241 : | movq [rdx + 8*rsi +120], mm7 | ||
242 : | add rsi, byte 2 | ||
243 : | jng near .loop | ||
244 : | |||
245 : | .done | ||
246 : | ; calculate data[0] // (int32_t)dcscalar) | ||
247 : | ; mov esi, [esp + 12 + 16] ; dcscalar | ||
248 : | mov rsi, r9 ; dcscalar | ||
249 : | movsx rcx, word [rax] | ||
250 : | mov rdi, rcx | ||
251 : | ; mov edx, [esp + 12 + 16] | ||
252 : | mov r11, rdx ; save rdx | ||
253 : | mov rdx, r9 ; | ||
254 : | shr edx, 1 ; ebx = dcscalar /2 | ||
255 : | sar edi, 31 ; cdq is vectorpath | ||
256 : | xor edx, edi ; ebx = eax V -eax -1 | ||
257 : | sub ecx, edi | ||
258 : | add ecx, edx | ||
259 : | ;; mov rdx, [dword esp + 12 + 4] | ||
260 : | mov rdx, r11 ; restore rdx | ||
261 : | lea r11, [int_div wrt rip] | ||
262 : | mov rsi, [r11+4*rsi] | ||
263 : | imul ecx, esi | ||
264 : | sar ecx, 17 | ||
265 : | lea rbx, [byte rcx + 1] | ||
266 : | cmovs rcx, rbx | ||
267 : | ; idiv cx ; ecx = edi:ecx / dcscalar | ||
268 : | |||
269 : | ; mov ebx, [esp] | ||
270 : | ; mov edi, [esp+4] | ||
271 : | ; mov esi, [esp+8] | ||
272 : | ; add esp, byte 12 ; pops... | ||
273 : | pop rbx | ||
274 : | ; mov [rdx], rcx ; coeff[0] = ax | ||
275 : | mov [rdx], cx ; coeff[0] = cx | ||
276 : | |||
277 : | xor rax, rax | ||
278 : | ret | ||
279 : | |||
280 : | ALIGN 16 | ||
281 : | .q1loop | ||
282 : | movq mm1, [rax + 8*rsi+112] ; mm0 = [1st] | ||
283 : | psubw mm0, mm1 ;-mm1 | ||
284 : | movq mm4, [rax + 8*rsi+120] ; | ||
285 : | psubw mm3, mm4 ;-mm4 | ||
286 : | pmaxsw mm0, mm1 ;|src| | ||
287 : | pmaxsw mm3, mm4 | ||
288 : | ; nop2 | ||
289 : | psraw mm1, 15 ;sign src | ||
290 : | psraw mm4, 15 | ||
291 : | psllw mm0, 4 ; level << 4 | ||
292 : | psllw mm3, 4 | ||
293 : | paddw mm0, [rdi + 128 + 8*rsi+112] ;mm0 is to be divided | ||
294 : | paddw mm3, [rdi + 128 + 8*rsi+120] ;intra1 contains fix for division by 1 | ||
295 : | movq mm5, [rdi + 384 + 8*rsi+112] ;with rounding down | ||
296 : | movq mm7, [rdi + 384 + 8*rsi+120] | ||
297 : | pmulhuw mm5, mm0 | ||
298 : | pmulhuw mm7, mm3 ;mm7: first approx of division | ||
299 : | ; mov esp, esp | ||
300 : | movq mm2, [rdi + 8*rsi+112] | ||
301 : | movq mm6, [rdi + 8*rsi+120] ; divs for q<=16 | ||
302 : | pmullw mm2, mm5 ;test value <= original | ||
303 : | pmullw mm6, mm7 | ||
304 : | psubw mm0, mm2 ;mismatch | ||
305 : | psubw mm3, mm6 | ||
306 : | ; nop4 | ||
307 : | lea r11, [quantd wrt rip] | ||
308 : | movq mm2, [r11 + rcx * 8 - 8] | ||
309 : | paddw mm5, mm2 ;first approx with quantd | ||
310 : | paddw mm7, mm2 | ||
311 : | ; mov esp, esp | ||
312 : | pmulhuw mm0, [rdi + 256 + 8*rsi+112] ;correction | ||
313 : | pmulhuw mm3, [rdi + 256 + 8*rsi+120] | ||
314 : | paddw mm5, mm0 ;final result with quantd | ||
315 : | paddw mm7, mm3 | ||
316 : | pxor mm0, mm0 | ||
317 : | pxor mm3, mm3 | ||
318 : | ; mov esp, esp | ||
319 : | psrlw mm5, 1 ; (level + quantd) /2 (quant = 1) | ||
320 : | psrlw mm7, 1 | ||
321 : | pxor mm5, mm1 ; mm0 *= sign(mm0) | ||
322 : | pxor mm7, mm4 ; | ||
323 : | psubw mm5, mm1 ; undisplace | ||
324 : | psubw mm7, mm4 ; | ||
325 : | movq [rdx + 8*rsi+112], mm5 | ||
326 : | movq [rdx + 8*rsi +120], mm7 | ||
327 : | add rsi, byte 2 | ||
328 : | jng near .q1loop | ||
329 : | jmp near .done | ||
330 : | |||
331 : | ALIGN 8 | ||
332 : | .lloop | ||
333 : | movq mm1, [rax + 8*rsi+112] ; mm0 = [1st] | ||
334 : | psubw mm0, mm1 ;-mm1 | ||
335 : | movq mm4, [rax + 8*rsi+120] | ||
336 : | psubw mm3, mm4 ;-mm4 | ||
337 : | pmaxsw mm0, mm1 ;|src| | ||
338 : | pmaxsw mm3, mm4 | ||
339 : | ; nop2 | ||
340 : | psraw mm1, 15 ;sign src | ||
341 : | psraw mm4, 15 | ||
342 : | psllw mm0, 4 ; level << 4 | ||
343 : | psllw mm3, 4 ; | ||
344 : | paddw mm0, [rdi + 128 + 8*rsi+112] ;mm0 is to be divided intra1 contains fix for division by 1 | ||
345 : | paddw mm3, [rdi + 128 + 8*rsi+120] | ||
346 : | movq mm5, [rdi + 384 + 8*rsi+112] | ||
347 : | movq mm7, [rdi + 384 + 8*rsi+120] | ||
348 : | pmulhuw mm5, mm0 | ||
349 : | pmulhuw mm7, mm3 ;mm7: first approx of division | ||
350 : | ; mov esp, esp | ||
351 : | movq mm2, [rdi + 8*rsi+112] | ||
352 : | movq mm6, [rdi + 8*rsi+120] | ||
353 : | pmullw mm2, mm5 ;test value <= original | ||
354 : | pmullw mm6, mm7 | ||
355 : | psubw mm0, mm2 ;mismatch | ||
356 : | psubw mm3, mm6 | ||
357 : | ; nop4 | ||
358 : | lea r11, [quantd wrt rip] | ||
359 : | movq mm2, [r11 + rcx * 8 - 8] | ||
360 : | lea r11, [mmx_div wrt rip] | ||
361 : | movq mm6, [r11 + rcx * 8 - 8] ; divs for q<=16 | ||
362 : | paddw mm5, mm2 ;first approx with quantd | ||
363 : | paddw mm7, mm2 | ||
364 : | ; mov esp, esp | ||
365 : | pmulhuw mm0, [rdi + 256 + 8*rsi+112] ;correction | ||
366 : | pmulhuw mm3, [rdi + 256 + 8*rsi+120] | ||
367 : | paddw mm5, mm0 ;final result with quantd | ||
368 : | paddw mm7, mm3 | ||
369 : | pxor mm0, mm0 | ||
370 : | pxor mm3, mm3 | ||
371 : | ; mov esp, esp | ||
372 : | pmulhuw mm5, mm6 ; mm0 = (mm0 / 2Q) >> 16 | ||
373 : | pmulhuw mm7, mm6 ; (level + quantd) / quant (0<quant<32) | ||
374 : | psrlw mm5, 1 ; (level + quantd) / (2*quant) | ||
375 : | psrlw mm7, 1 | ||
376 : | pxor mm5, mm1 ; mm0 *= sign(mm0) | ||
377 : | pxor mm7, mm4 ; | ||
378 : | psubw mm5, mm1 ; undisplace | ||
379 : | psubw mm7, mm4 ; | ||
380 : | movq [rdx + 8*rsi+112], mm5 | ||
381 : | movq [rdx + 8*rsi +120], mm7 | ||
382 : | add rsi,byte 2 | ||
383 : | jng near .lloop | ||
384 : | jmp near .done | ||
385 : | .endfunc | ||
386 : | |||
387 : | ;----------------------------------------------------------------------------- | ||
388 : | ; | ||
389 : | ; uint32_t quant_mpeg_inter_x86_64(int16_t * coeff, | ||
390 : | ; const int16_t const * data, | ||
391 : | ; const uint32_t quant, | ||
392 : | ; const uint16_t *mpeg_matrices); | ||
393 : | ; Ported from its 32bit xmm cousin | ||
394 : | ;----------------------------------------------------------------------------- | ||
395 : | |||
396 : | ALIGN 16 | ||
397 : | quant_mpeg_inter_x86_64: | ||
398 : | mov rax, rsi ; data | ||
399 : | mov r8, rdi ; save coeff | ||
400 : | mov rdi, rcx ; mpeg_matrices | ||
401 : | mov rcx, rdx ; quant | ||
402 : | mov rdx, r8 ; coeff | ||
403 : | |||
404 : | push rbx | ||
405 : | |||
406 : | mov rsi, -14 | ||
407 : | mov rbx, rsp | ||
408 : | sub rsp, byte 24 ; 16 would be enough, but it isn't important | ||
409 : | lea rbx, [rsp+8] | ||
410 : | and rbx, byte -8 ;ALIGN 8 | ||
411 : | pxor mm0, mm0 | ||
412 : | pxor mm3, mm3 | ||
413 : | movq [byte rbx],mm0 | ||
414 : | movq [rbx+8],mm0 | ||
415 : | cmp rcx, byte 1 | ||
416 : | je near .q1loop | ||
417 : | cmp rcx, byte 19 | ||
418 : | jg near .lloop | ||
419 : | |||
420 : | ALIGN 16 | ||
421 : | .loop | ||
422 : | movq mm1, [rax + 8*rsi+112] ; mm0 = [1st] | ||
423 : | psubw mm0, mm1 ;-mm1 | ||
424 : | movq mm4, [rax + 8*rsi + 120] ; | ||
425 : | psubw mm3, mm4 ;-mm4 | ||
426 : | pmaxsw mm0, mm1 ;|src| | ||
427 : | pmaxsw mm3, mm4 | ||
428 : | ; nop2 | ||
429 : | psraw mm1, 15 ;sign src | ||
430 : | psraw mm4, 15 | ||
431 : | psllw mm0, 4 ; level << 4 | ||
432 : | psllw mm3, 4 ; | ||
433 : | paddw mm0, [rdi + 640 + 8*rsi+112] | ||
434 : | paddw mm3, [rdi + 640 + 8*rsi+120] | ||
435 : | movq mm5, [rdi + 896 + 8*rsi+112] | ||
436 : | movq mm7, [rdi + 896 + 8*rsi+120] | ||
437 : | pmulhuw mm5, mm0 | ||
438 : | pmulhuw mm7, mm3 | ||
439 : | ; mov esp, esp | ||
440 : | movq mm2, [rdi + 512 + 8*rsi+112] | ||
441 : | movq mm6, [rdi + 512 + 8*rsi+120] | ||
442 : | pmullw mm2, mm5 | ||
443 : | pmullw mm6, mm7 | ||
444 : | psubw mm0, mm2 | ||
445 : | psubw mm3, mm6 | ||
446 : | movq mm2, [byte rbx] | ||
447 : | lea r11, [mmx_divs wrt rip] | ||
448 : | movq mm6, [r11 + rcx * 8 - 8] | ||
449 : | pmulhuw mm0, [rdi + 768 + 8*rsi+112] | ||
450 : | pmulhuw mm3, [rdi + 768 + 8*rsi+120] | ||
451 : | paddw mm2, [rbx+8] ;sum | ||
452 : | paddw mm5, mm0 | ||
453 : | paddw mm7, mm3 | ||
454 : | pxor mm0, mm0 | ||
455 : | pxor mm3, mm3 | ||
456 : | pmulhuw mm5, mm6 ; mm0 = (mm0 / 2Q) >> 16 | ||
457 : | pmulhuw mm7, mm6 ; (level ) / quant (0<quant<32) | ||
458 : | add rsi, byte 2 | ||
459 : | paddw mm2, mm5 ;sum += x1 | ||
460 : | movq [rbx], mm7 ;store x2 | ||
461 : | pxor mm5, mm1 ; mm0 *= sign(mm0) | ||
462 : | pxor mm7, mm4 ; | ||
463 : | psubw mm5, mm1 ; undisplace | ||
464 : | psubw mm7, mm4 ; | ||
465 : | ; db 0Fh, 7Fh, 54h, 23h, 08 ;movq [ebx+8],mm2 ;store sum | ||
466 : | movq [rbx+8], mm2 ;store sum | ||
467 : | movq [rdx + 8*rsi+112-16], mm5 | ||
468 : | movq [rdx + 8*rsi +120-16], mm7 | ||
469 : | jng near .loop | ||
470 : | |||
471 : | .done | ||
472 : | ; calculate data[0] // (int32_t)dcscalar) | ||
473 : | paddw mm2, [rbx] | ||
474 : | add rsp, byte 24 | ||
475 : | pop rbx | ||
476 : | pmaddwd mm2, [mmx_one wrt rip] | ||
477 : | punpckldq mm0, mm2 ;get low dw to mm0:high | ||
478 : | paddd mm0,mm2 | ||
479 : | punpckhdq mm0, mm0 ;get result to low | ||
480 : | movd rax, mm0 | ||
481 : | |||
482 : | ret | ||
483 : | |||
484 : | ALIGN 16 | ||
485 : | .q1loop | ||
486 : | movq mm1, [rax + 8*rsi+112] ; mm0 = [1st] | ||
487 : | psubw mm0, mm1 ;-mm1 | ||
488 : | movq mm4, [rax + 8*rsi+120] | ||
489 : | psubw mm3, mm4 ;-mm4 | ||
490 : | pmaxsw mm0, mm1 ;|src| | ||
491 : | pmaxsw mm3, mm4 | ||
492 : | ; nop2 | ||
493 : | psraw mm1, 15 ; sign src | ||
494 : | psraw mm4, 15 | ||
495 : | psllw mm0, 4 ; level << 4 | ||
496 : | psllw mm3, 4 | ||
497 : | paddw mm0, [rdi + 640 + 8*rsi+112] ;mm0 is to be divided | ||
498 : | paddw mm3, [rdi + 640 + 8*rsi+120] ; inter1 contains fix for division by 1 | ||
499 : | movq mm5, [rdi + 896 + 8*rsi+112] ;with rounding down | ||
500 : | movq mm7, [rdi + 896 + 8*rsi+120] | ||
501 : | pmulhuw mm5, mm0 | ||
502 : | pmulhuw mm7, mm3 ;mm7: first approx of division | ||
503 : | ; mov esp, esp | ||
504 : | movq mm2, [rdi + 512 + 8*rsi+112] | ||
505 : | movq mm6, [rdi + 512 + 8*rsi+120] ; divs for q<=16 | ||
506 : | pmullw mm2, mm5 ;test value <= original | ||
507 : | pmullw mm6, mm7 | ||
508 : | psubw mm0, mm2 ;mismatch | ||
509 : | psubw mm3, mm6 | ||
510 : | movq mm2, [byte rbx] | ||
511 : | pmulhuw mm0, [rdi + 768 + 8*rsi+112] ;correction | ||
512 : | pmulhuw mm3, [rdi + 768 + 8*rsi+120] | ||
513 : | paddw mm2, [rbx+8] ;sum | ||
514 : | paddw mm5, mm0 ;final result | ||
515 : | paddw mm7, mm3 | ||
516 : | pxor mm0, mm0 | ||
517 : | pxor mm3, mm3 | ||
518 : | psrlw mm5, 1 ; (level ) /2 (quant = 1) | ||
519 : | psrlw mm7, 1 | ||
520 : | add rsi, byte 2 | ||
521 : | paddw mm2, mm5 ;sum += x1 | ||
522 : | movq [rbx], mm7 ;store x2 | ||
523 : | pxor mm5, mm1 ; mm0 *= sign(mm0) | ||
524 : | pxor mm7, mm4 ; | ||
525 : | psubw mm5, mm1 ; undisplace | ||
526 : | psubw mm7, mm4 ; | ||
527 : | movq [rbx+8], mm2 ;store sum | ||
528 : | movq [rdx + 8*rsi+112-16], mm5 | ||
529 : | movq [rdx + 8*rsi +120-16], mm7 | ||
530 : | jng near .q1loop | ||
531 : | jmp near .done | ||
532 : | |||
533 : | ALIGN 8 | ||
534 : | .lloop | ||
535 : | movq mm1, [rax + 8*rsi+112] ; mm0 = [1st] | ||
536 : | psubw mm0,mm1 ;-mm1 | ||
537 : | movq mm4, [rax + 8*rsi+120] | ||
538 : | psubw mm3,mm4 ;-mm4 | ||
539 : | pmaxsw mm0,mm1 ;|src| | ||
540 : | pmaxsw mm3,mm4 | ||
541 : | ; nop2 | ||
542 : | psraw mm1,15 ;sign src | ||
543 : | psraw mm4,15 | ||
544 : | psllw mm0, 4 ; level << 4 | ||
545 : | psllw mm3, 4 ; | ||
546 : | paddw mm0, [rdi + 640 + 8*rsi+112] ;mm0 is to be divided inter1 contains fix for division by 1 | ||
547 : | paddw mm3, [rdi + 640 + 8*rsi+120] | ||
548 : | movq mm5,[rdi + 896 + 8*rsi+112] | ||
549 : | movq mm7,[rdi + 896 + 8*rsi+120] | ||
550 : | pmulhuw mm5,mm0 | ||
551 : | pmulhuw mm7,mm3 ;mm7: first approx of division | ||
552 : | ; mov esp,esp | ||
553 : | movq mm2,[rdi + 512 + 8*rsi+112] | ||
554 : | movq mm6,[rdi + 512 + 8*rsi+120] | ||
555 : | pmullw mm2,mm5 ;test value <= original | ||
556 : | pmullw mm6,mm7 | ||
557 : | psubw mm0,mm2 ;mismatch | ||
558 : | psubw mm3,mm6 | ||
559 : | movq mm2,[byte rbx] | ||
560 : | lea r11, [mmx_div wrt rip] | ||
561 : | movq mm6,[r11 + rcx * 8 - 8] ; divs for q<=16 | ||
562 : | pmulhuw mm0,[rdi + 768 + 8*rsi+112] ;correction | ||
563 : | pmulhuw mm3,[rdi + 768 + 8*rsi+120] | ||
564 : | paddw mm2,[rbx+8] ;sum | ||
565 : | paddw mm5,mm0 ;final result | ||
566 : | paddw mm7,mm3 | ||
567 : | pxor mm0,mm0 | ||
568 : | pxor mm3,mm3 | ||
569 : | pmulhuw mm5, mm6 ; mm0 = (mm0 / 2Q) >> 16 | ||
570 : | pmulhuw mm7, mm6 ; (level ) / quant (0<quant<32) | ||
571 : | add rsi,byte 2 | ||
572 : | psrlw mm5, 1 ; (level ) / (2*quant) | ||
573 : | paddw mm2,mm5 ;sum += x1 | ||
574 : | psrlw mm7, 1 | ||
575 : | movq [rbx],mm7 ;store x2 | ||
576 : | pxor mm5, mm1 ; mm0 *= sign(mm0) | ||
577 : | pxor mm7, mm4 ; | ||
578 : | psubw mm5, mm1 ; undisplace | ||
579 : | psubw mm7, mm4 ; | ||
580 : | ; db 0Fh, 7Fh, 54h, 23h, 08 ;movq [ebx+8],mm2 ;store sum | ||
581 : | movq [rbx+8], mm2 ;store sum | ||
582 : | movq [rdx + 8*rsi+112-16], mm5 | ||
583 : | movq [rdx + 8*rsi +120-16], mm7 | ||
584 : | jng near .lloop | ||
585 : | jmp near .done | ||
586 : | .endfunc | ||
587 : | |||
588 : | ;----------------------------------------------------------------------------- | ||
589 : | ; | ||
590 : | ; uint32_t dequant_mpeg_intra_x86_64(int16_t *data, | ||
591 : | ; const int16_t const *coeff, | ||
592 : | ; const uint32_t quant, | ||
593 : | ; const uint32_t dcscalar, | ||
594 : | ; const uint16_t *mpeg_matrices); | ||
595 : | ; Ported from the 32bit 3dne cousin | ||
596 : | ;----------------------------------------------------------------------------- | ||
597 : | |||
598 : | ; Note: in order to saturate 'easily', we pre-shift the quantifier | ||
599 : | ; by 4. Then, the high-word of (coeff[]*matrix[i]*quant) are used to | ||
600 : | ; build a saturating mask. It is non-zero only when an overflow occured. | ||
601 : | ; We thus avoid packing/unpacking toward double-word. | ||
602 : | ; Moreover, we perform the mult (matrix[i]*quant) first, instead of, e.g., | ||
603 : | ; (coeff[i]*matrix[i]). This is less prone to overflow if coeff[] are not | ||
604 : | ; checked. Input ranges are: coeff in [-127,127], inter_matrix in [1..255],a | ||
605 : | ; and quant in [1..31]. | ||
606 : | ; | ||
607 : | |||
608 : | %macro DEQUANT4INTRAMMX 1 | ||
609 : | movq mm1, [byte rcx+ 16 * %1] ; mm0 = c = coeff[i] | ||
610 : | movq mm4, [rcx+ 16 * %1 +8] ; mm3 = c' = coeff[i+1] | ||
611 : | psubw mm0, mm1 | ||
612 : | psubw mm3, mm4 | ||
613 : | pmaxsw mm0, mm1 | ||
614 : | pmaxsw mm3, mm4 | ||
615 : | psraw mm1, 15 | ||
616 : | psraw mm4, 15 | ||
617 : | %if %1 | ||
618 : | movq mm2, [rsp-16] | ||
619 : | movq mm7, [rsp-16] | ||
620 : | %endif | ||
621 : | pmullw mm2, [rdi + 16 * %1 ] ; matrix[i]*quant | ||
622 : | pmullw mm7, [rdi + 16 * %1 +8] ; matrix[i+1]*quant | ||
623 : | movq mm5, mm0 | ||
624 : | movq mm6, mm3 | ||
625 : | pmulhw mm0, mm2 ; high of coeff*(matrix*quant) | ||
626 : | pmulhw mm3, mm7 ; high of coeff*(matrix*quant) | ||
627 : | pmullw mm2, mm5 ; low of coeff*(matrix*quant) | ||
628 : | pmullw mm7, mm6 ; low of coeff*(matrix*quant) | ||
629 : | pcmpgtw mm0, [rsp-8] | ||
630 : | pcmpgtw mm3, [rsp-8] | ||
631 : | paddusw mm2, mm0 | ||
632 : | paddusw mm7, mm3 | ||
633 : | psrlw mm2, 5 | ||
634 : | psrlw mm7, 5 | ||
635 : | pxor mm2, mm1 ; start negating back | ||
636 : | pxor mm7, mm4 ; start negating back | ||
637 : | psubusw mm1, mm0 | ||
638 : | psubusw mm4, mm3 | ||
639 : | movq mm0, [rsp-8] | ||
640 : | movq mm3, [rsp-8] | ||
641 : | psubw mm2, mm1 ; finish negating back | ||
642 : | psubw mm7, mm4 ; finish negating back | ||
643 : | movq [byte rdx + 16 * %1], mm2 ; data[i] | ||
644 : | movq [rdx + 16 * %1 +8], mm7 ; data[i+1] | ||
645 : | %endmacro | ||
646 : | |||
647 : | ALIGN 16 | ||
648 : | dequant_mpeg_intra_x86_64: | ||
649 : | mov rax, rdx ; quant | ||
650 : | mov rdx, rdi ; data | ||
651 : | mov r9, rcx ; dcscalar | ||
652 : | mov rcx, rsi ; coeff | ||
653 : | |||
654 : | lea r11, [mmx_mul_quant wrt rip] | ||
655 : | movq mm7, [r11 + rax*8 - 8] | ||
656 : | psllw mm7, 2 ; << 2. See comment. | ||
657 : | push rbx | ||
658 : | |||
659 : | movsx ebx, word [rcx] | ||
660 : | pxor mm0, mm0 | ||
661 : | pxor mm3, mm3 | ||
662 : | |||
663 : | movq [rsp-8], mm0 | ||
664 : | movq [rsp-16], mm7 | ||
665 : | |||
666 : | imul ebx, r9d | ||
667 : | movq mm2, mm7 | ||
668 : | mov rdi, r8 ; mpeg_quant_matrices | ||
669 : | ALIGN 4 | ||
670 : | |||
671 : | DEQUANT4INTRAMMX 0 | ||
672 : | |||
673 : | mov esi, -2048 | ||
674 : | ; nop | ||
675 : | cmp ebx, esi | ||
676 : | |||
677 : | DEQUANT4INTRAMMX 1 | ||
678 : | |||
679 : | cmovl ebx, esi | ||
680 : | neg esi | ||
681 : | sub esi, byte 1 ;2047 | ||
682 : | |||
683 : | DEQUANT4INTRAMMX 2 | ||
684 : | |||
685 : | cmp ebx, esi | ||
686 : | cmovg ebx, esi | ||
687 : | |||
688 : | DEQUANT4INTRAMMX 3 | ||
689 : | |||
690 : | mov [byte rdx], bx | ||
691 : | |||
692 : | DEQUANT4INTRAMMX 4 | ||
693 : | DEQUANT4INTRAMMX 5 | ||
694 : | DEQUANT4INTRAMMX 6 | ||
695 : | DEQUANT4INTRAMMX 7 | ||
696 : | |||
697 : | pop rbx | ||
698 : | |||
699 : | xor rax, rax | ||
700 : | ret | ||
701 : | .endfunc | ||
702 : | |||
703 : | ;----------------------------------------------------------------------------- | ||
704 : | ; | ||
705 : | ; uint32_t dequant_mpeg_inter_3dne(int16_t * data, | ||
706 : | ; const int16_t * const coeff, | ||
707 : | ; const uint32_t quant, | ||
708 : | ; const uint16_t *mpeg_matrices); | ||
709 : | ; Ported from 32bit 3dne cousin | ||
710 : | ;----------------------------------------------------------------------------- | ||
711 : | |||
712 : | ; Note: We use (2*c + sgn(c) - sgn(-c)) as multiplier | ||
713 : | ; so we handle the 3 cases: c<0, c==0, and c>0 in one shot. | ||
714 : | ; sgn(x) is the result of 'pcmpgtw 0,x': 0 if x>=0, -1 if x<0. | ||
715 : | ; It's mixed with the extraction of the absolute value. | ||
716 : | |||
717 : | ALIGN 16 | ||
718 : | dequant_mpeg_inter_x86_64: | ||
719 : | mov rax, rdx ; quant | ||
720 : | mov rdx, rdi ; data | ||
721 : | mov rdi, rcx ; mpeg_matrices | ||
722 : | mov rcx, rsi ; coeff | ||
723 : | |||
724 : | lea r11, [mmx_mul_quant wrt rip] | ||
725 : | movq mm7, [r11 + rax*8 - 8] | ||
726 : | mov rax, -14 | ||
727 : | paddw mm7, mm7 ; << 1 | ||
728 : | pxor mm6, mm6 ; mismatch sum | ||
729 : | pxor mm1, mm1 | ||
730 : | pxor mm3, mm3 | ||
731 : | |||
732 : | ALIGN 16 | ||
733 : | .loop | ||
734 : | movq mm0, [rcx+8*rax + 7*16 ] ; mm0 = coeff[i] | ||
735 : | pcmpgtw mm1, mm0 ; mm1 = sgn(c) (preserved) | ||
736 : | movq mm2, [rcx+8*rax + 7*16 +8] ; mm2 = coeff[i+1] | ||
737 : | pcmpgtw mm3, mm2 ; mm3 = sgn(c') (preserved) | ||
738 : | paddsw mm0, mm1 ; c += sgn(c) | ||
739 : | paddsw mm2, mm3 ; c += sgn(c') | ||
740 : | paddw mm0, mm0 ; c *= 2 | ||
741 : | paddw mm2, mm2 ; c'*= 2 | ||
742 : | |||
743 : | movq mm4, [mmzero wrt rip] | ||
744 : | movq mm5, [mmzero wrt rip] | ||
745 : | psubw mm4, mm0 ; -c | ||
746 : | psubw mm5, mm2 ; -c' | ||
747 : | |||
748 : | psraw mm4, 16 ; mm4 = sgn(-c) | ||
749 : | psraw mm5, 16 ; mm5 = sgn(-c') | ||
750 : | psubsw mm0, mm4 ; c -= sgn(-c) | ||
751 : | psubsw mm2, mm5 ; c' -= sgn(-c') | ||
752 : | pxor mm0, mm1 ; finish changing sign if needed | ||
753 : | pxor mm2, mm3 ; finish changing sign if needed | ||
754 : | |||
755 : | ; we're short on register, here. Poor pairing... | ||
756 : | |||
757 : | movq mm4, mm7 ; (matrix*quant) | ||
758 : | ; nop | ||
759 : | pmullw mm4, [rdi + 512 + 8*rax + 7*16] | ||
760 : | movq mm5, mm4 | ||
761 : | pmulhw mm5, mm0 ; high of c*(matrix*quant) | ||
762 : | pmullw mm0, mm4 ; low of c*(matrix*quant) | ||
763 : | |||
764 : | movq mm4, mm7 ; (matrix*quant) | ||
765 : | pmullw mm4, [rdi + 512 + 8*rax + 7*16 + 8] | ||
766 : | add rax, byte 2 | ||
767 : | |||
768 : | pcmpgtw mm5, [mmzero wrt rip] | ||
769 : | paddusw mm0, mm5 | ||
770 : | psrlw mm0, 5 | ||
771 : | pxor mm0, mm1 ; start restoring sign | ||
772 : | psubusw mm1, mm5 | ||
773 : | |||
774 : | movq mm5, mm4 | ||
775 : | pmulhw mm5, mm2 ; high of c*(matrix*quant) | ||
776 : | pmullw mm2, mm4 ; low of c*(matrix*quant) | ||
777 : | psubw mm0, mm1 ; finish restoring sign | ||
778 : | |||
779 : | pcmpgtw mm5, [mmzero wrt rip] | ||
780 : | paddusw mm2, mm5 | ||
781 : | psrlw mm2, 5 | ||
782 : | pxor mm2, mm3 ; start restoring sign | ||
783 : | psubusw mm3, mm5 | ||
784 : | psubw mm2, mm3 ; finish restoring sign | ||
785 : | movq mm1, [mmzero wrt rip] | ||
786 : | movq mm3, [byte mmzero wrt rip] | ||
787 : | pxor mm6, mm0 ; mismatch control | ||
788 : | movq [rdx + 8*rax + 7*16 -2*8 ], mm0 ; data[i] | ||
789 : | pxor mm6, mm2 ; mismatch control | ||
790 : | movq [rdx + 8*rax + 7*16 -2*8 +8], mm2 ; data[i+1] | ||
791 : | |||
792 : | jng .loop | ||
793 : | ; nop | ||
794 : | |||
795 : | ; mismatch control | ||
796 : | |||
797 : | pshufw mm0, mm6, 01010101b | ||
798 : | pshufw mm1, mm6, 10101010b | ||
799 : | pshufw mm2, mm6, 11111111b | ||
800 : | pxor mm6, mm0 | ||
801 : | pxor mm1, mm2 | ||
802 : | pxor mm6, mm1 | ||
803 : | movd rax, mm6 | ||
804 : | and rax, byte 1 | ||
805 : | xor rax, byte 1 | ||
806 : | xor word [rdx + 2*63], ax | ||
807 : | |||
808 : | xor rax, rax | ||
809 : | ret | ||
810 : | .endfunc |
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