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1 : | edgomez | 1382 | ;/***************************************************************************** |
2 : | Isibaar | 262 | ; * |
3 : | edgomez | 1382 | ; * XVID MPEG-4 VIDEO CODEC |
4 : | ; * - mmx 8x8 block-based halfpel interpolation - | ||
5 : | Isibaar | 262 | ; * |
6 : | edgomez | 1382 | ; * Copyright(C) 2002 Michael Militzer <isibaar@xvid.org> |
7 : | ; * 2002 Pascal Massimino <skal@planet-d.net> | ||
8 : | Isibaar | 262 | ; * |
9 : | edgomez | 1382 | ; * This program is free software ; you can redistribute it and/or modify |
10 : | ; * it under the terms of the GNU General Public License as published by | ||
11 : | ; * the Free Software Foundation ; either version 2 of the License, or | ||
12 : | ; * (at your option) any later version. | ||
13 : | Isibaar | 262 | ; * |
14 : | edgomez | 1382 | ; * This program is distributed in the hope that it will be useful, |
15 : | ; * but WITHOUT ANY WARRANTY ; without even the implied warranty of | ||
16 : | ; * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
17 : | ; * GNU General Public License for more details. | ||
18 : | Isibaar | 262 | ; * |
19 : | edgomez | 1382 | ; * You should have received a copy of the GNU General Public License |
20 : | ; * along with this program ; if not, write to the Free Software | ||
21 : | ; * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | ||
22 : | Isibaar | 262 | ; * |
23 : | edgomez | 1382 | ; ****************************************************************************/ |
24 : | Isibaar | 262 | |
25 : | edgomez | 1382 | BITS 32 |
26 : | edgomez | 851 | |
27 : | edgomez | 1382 | %macro cglobal 1 |
28 : | Isibaar | 262 | %ifdef PREFIX |
29 : | edgomez | 1535 | %ifdef MARK_FUNCS |
30 : | edgomez | 1540 | global _%1:function %1.endfunc-%1 |
31 : | %define %1 _%1:function %1.endfunc-%1 | ||
32 : | edgomez | 1535 | %else |
33 : | global _%1 | ||
34 : | %define %1 _%1 | ||
35 : | %endif | ||
36 : | Isibaar | 262 | %else |
37 : | edgomez | 1535 | %ifdef MARK_FUNCS |
38 : | edgomez | 1540 | global %1:function %1.endfunc-%1 |
39 : | edgomez | 1535 | %else |
40 : | global %1 | ||
41 : | %endif | ||
42 : | Isibaar | 262 | %endif |
43 : | %endmacro | ||
44 : | |||
45 : | edgomez | 1382 | ;============================================================================= |
46 : | ; Read only data | ||
47 : | ;============================================================================= | ||
48 : | Isibaar | 262 | |
49 : | edgomez | 1382 | %ifdef FORMAT_COFF |
50 : | edgomez | 1519 | SECTION .rodata |
51 : | edgomez | 1382 | %else |
52 : | edgomez | 1519 | SECTION .rodata align=16 |
53 : | edgomez | 1382 | %endif |
54 : | Isibaar | 262 | |
55 : | edgomez | 1382 | ALIGN 16 |
56 : | mmx_one: | ||
57 : | times 8 db 1 | ||
58 : | Isibaar | 262 | |
59 : | edgomez | 1382 | SECTION .text |
60 : | Isibaar | 262 | |
61 : | cglobal interpolate8x8_halfpel_h_xmm | ||
62 : | cglobal interpolate8x8_halfpel_v_xmm | ||
63 : | cglobal interpolate8x8_halfpel_hv_xmm | ||
64 : | |||
65 : | edgomez | 1530 | cglobal interpolate8x8_halfpel_add_xmm |
66 : | cglobal interpolate8x8_halfpel_h_add_xmm | ||
67 : | cglobal interpolate8x8_halfpel_v_add_xmm | ||
68 : | cglobal interpolate8x8_halfpel_hv_add_xmm | ||
69 : | |||
70 : | Isibaar | 262 | ;=========================================================================== |
71 : | ; | ||
72 : | ; void interpolate8x8_halfpel_h_xmm(uint8_t * const dst, | ||
73 : | ; const uint8_t * const src, | ||
74 : | ; const uint32_t stride, | ||
75 : | ; const uint32_t rounding); | ||
76 : | ; | ||
77 : | ;=========================================================================== | ||
78 : | |||
79 : | %macro COPY_H_SSE_RND0 0 | ||
80 : | movq mm0, [eax] | ||
81 : | pavgb mm0, [eax+1] | ||
82 : | movq mm1, [eax+edx] | ||
83 : | pavgb mm1, [eax+edx+1] | ||
84 : | lea eax,[eax+2*edx] | ||
85 : | movq [ecx],mm0 | ||
86 : | movq [ecx+edx],mm1 | ||
87 : | %endmacro | ||
88 : | |||
89 : | %macro COPY_H_SSE_RND1 0 | ||
90 : | movq mm0, [eax] | ||
91 : | movq mm1, [eax+edx] | ||
92 : | movq mm4, mm0 | ||
93 : | movq mm5, mm1 | ||
94 : | edgomez | 1382 | movq mm2, [eax+1] |
95 : | Isibaar | 262 | movq mm3, [eax+edx+1] |
96 : | pavgb mm0, mm2 | ||
97 : | pxor mm2, mm4 | ||
98 : | pavgb mm1, mm3 | ||
99 : | edgomez | 1382 | lea eax, [eax+2*edx] |
100 : | Isibaar | 262 | pxor mm3, mm5 |
101 : | pand mm2, mm7 | ||
102 : | pand mm3, mm7 | ||
103 : | psubb mm0, mm2 | ||
104 : | movq [ecx], mm0 | ||
105 : | psubb mm1, mm3 | ||
106 : | edgomez | 1382 | movq [ecx+edx], mm1 |
107 : | Isibaar | 262 | %endmacro |
108 : | |||
109 : | edgomez | 1382 | ALIGN 16 |
110 : | Isibaar | 262 | interpolate8x8_halfpel_h_xmm: |
111 : | |||
112 : | edgomez | 1382 | mov eax, [esp+16] ; rounding |
113 : | mov ecx, [esp+ 4] ; Dst | ||
114 : | Isibaar | 262 | test eax,eax |
115 : | edgomez | 1382 | mov eax, [esp+ 8] ; Src |
116 : | mov edx, [esp+12] ; stride | ||
117 : | Isibaar | 262 | |
118 : | jnz near .rounding1 | ||
119 : | |||
120 : | COPY_H_SSE_RND0 | ||
121 : | lea ecx,[ecx+2*edx] | ||
122 : | COPY_H_SSE_RND0 | ||
123 : | lea ecx,[ecx+2*edx] | ||
124 : | COPY_H_SSE_RND0 | ||
125 : | lea ecx,[ecx+2*edx] | ||
126 : | COPY_H_SSE_RND0 | ||
127 : | ret | ||
128 : | |||
129 : | .rounding1 | ||
130 : | edgomez | 1382 | ; we use: (i+j)/2 = ( i+j+1 )/2 - (i^j)&1 |
131 : | Isibaar | 262 | movq mm7, [mmx_one] |
132 : | COPY_H_SSE_RND1 | ||
133 : | lea ecx, [ecx+2*edx] | ||
134 : | COPY_H_SSE_RND1 | ||
135 : | lea ecx,[ecx+2*edx] | ||
136 : | COPY_H_SSE_RND1 | ||
137 : | lea ecx,[ecx+2*edx] | ||
138 : | COPY_H_SSE_RND1 | ||
139 : | ret | ||
140 : | edgomez | 1540 | .endfunc |
141 : | Isibaar | 262 | |
142 : | ;=========================================================================== | ||
143 : | ; | ||
144 : | ; void interpolate8x8_halfpel_v_xmm(uint8_t * const dst, | ||
145 : | edgomez | 1382 | ; const uint8_t * const src, |
146 : | ; const uint32_t stride, | ||
147 : | ; const uint32_t rounding); | ||
148 : | Isibaar | 262 | ; |
149 : | ;=========================================================================== | ||
150 : | |||
151 : | %macro COPY_V_SSE_RND0 0 | ||
152 : | edgomez | 1382 | movq mm0, [eax] |
153 : | movq mm1, [eax+edx] | ||
154 : | Isibaar | 262 | pavgb mm0, mm1 |
155 : | pavgb mm1, [eax+2*edx] | ||
156 : | edgomez | 1382 | lea eax, [eax+2*edx] |
157 : | movq [ecx], mm0 | ||
158 : | Isibaar | 262 | movq [ecx+edx],mm1 |
159 : | %endmacro | ||
160 : | |||
161 : | %macro COPY_V_SSE_RND1 0 | ||
162 : | movq mm0, mm2 | ||
163 : | movq mm1, [eax] | ||
164 : | movq mm2, [eax+edx] | ||
165 : | lea eax,[eax+2*edx] | ||
166 : | movq mm4, mm0 | ||
167 : | movq mm5, mm1 | ||
168 : | pavgb mm0, mm1 | ||
169 : | edgomez | 1382 | pxor mm4, mm1 |
170 : | Isibaar | 262 | pavgb mm1, mm2 |
171 : | pxor mm5, mm2 | ||
172 : | edgomez | 1382 | pand mm4, mm7 ; lsb's of (i^j)... |
173 : | pand mm5, mm7 ; lsb's of (i^j)... | ||
174 : | psubb mm0, mm4 ; ...are substracted from result of pavgb | ||
175 : | Isibaar | 262 | movq [ecx], mm0 |
176 : | edgomez | 1382 | psubb mm1, mm5 ; ...are substracted from result of pavgb |
177 : | Isibaar | 262 | movq [ecx+edx], mm1 |
178 : | %endmacro | ||
179 : | |||
180 : | edgomez | 1382 | ALIGN 16 |
181 : | Isibaar | 262 | interpolate8x8_halfpel_v_xmm: |
182 : | |||
183 : | mov eax, [esp+16]; rounding | ||
184 : | edgomez | 1382 | mov ecx, [esp+ 4] ; Dst |
185 : | Isibaar | 262 | test eax,eax |
186 : | edgomez | 1382 | mov eax, [esp+ 8] ; Src |
187 : | mov edx, [esp+12] ; stride | ||
188 : | Isibaar | 262 | |
189 : | edgomez | 1382 | ; we process 2 line at a time |
190 : | Isibaar | 262 | jnz near .rounding1 |
191 : | |||
192 : | COPY_V_SSE_RND0 | ||
193 : | lea ecx, [ecx+2*edx] | ||
194 : | COPY_V_SSE_RND0 | ||
195 : | lea ecx, [ecx+2*edx] | ||
196 : | COPY_V_SSE_RND0 | ||
197 : | lea ecx, [ecx+2*edx] | ||
198 : | COPY_V_SSE_RND0 | ||
199 : | ret | ||
200 : | |||
201 : | .rounding1 | ||
202 : | edgomez | 1382 | ; we use: (i+j)/2 = ( i+j+1 )/2 - (i^j)&1 |
203 : | Isibaar | 262 | movq mm7, [mmx_one] |
204 : | edgomez | 1382 | movq mm2, [eax] ; loop invariant |
205 : | Isibaar | 262 | add eax, edx |
206 : | |||
207 : | COPY_V_SSE_RND1 | ||
208 : | lea ecx,[ecx+2*edx] | ||
209 : | COPY_V_SSE_RND1 | ||
210 : | lea ecx,[ecx+2*edx] | ||
211 : | COPY_V_SSE_RND1 | ||
212 : | lea ecx,[ecx+2*edx] | ||
213 : | COPY_V_SSE_RND1 | ||
214 : | ret | ||
215 : | edgomez | 1540 | .endfunc |
216 : | Isibaar | 262 | |
217 : | ;=========================================================================== | ||
218 : | ; | ||
219 : | ; void interpolate8x8_halfpel_hv_xmm(uint8_t * const dst, | ||
220 : | edgomez | 1382 | ; const uint8_t * const src, |
221 : | ; const uint32_t stride, | ||
222 : | ; const uint32_t rounding); | ||
223 : | Isibaar | 262 | ; |
224 : | ; | ||
225 : | ;=========================================================================== | ||
226 : | |||
227 : | ; The trick is to correct the result of 'pavgb' with some combination of the | ||
228 : | ; lsb's of the 4 input values i,j,k,l, and their intermediate 'pavgb' (s and t). | ||
229 : | ; The boolean relations are: | ||
230 : | edgomez | 1382 | ; (i+j+k+l+3)/4 = (s+t+1)/2 - (ij&kl)&st |
231 : | Isibaar | 262 | ; (i+j+k+l+2)/4 = (s+t+1)/2 - (ij|kl)&st |
232 : | ; (i+j+k+l+1)/4 = (s+t+1)/2 - (ij&kl)|st | ||
233 : | ; (i+j+k+l+0)/4 = (s+t+1)/2 - (ij|kl)|st | ||
234 : | ; with s=(i+j+1)/2, t=(k+l+1)/2, ij = i^j, kl = k^l, st = s^t. | ||
235 : | |||
236 : | ; Moreover, we process 2 lines at a times, for better overlapping (~15% faster). | ||
237 : | |||
238 : | %macro COPY_HV_SSE_RND0 0 | ||
239 : | edgomez | 1382 | lea eax, [eax+edx] |
240 : | Isibaar | 262 | |
241 : | edgomez | 1382 | movq mm0, [eax] |
242 : | movq mm1, [eax+1] | ||
243 : | Isibaar | 262 | |
244 : | edgomez | 1382 | movq mm6, mm0 |
245 : | pavgb mm0, mm1 ; mm0=(j+k+1)/2. preserved for next step | ||
246 : | lea eax, [eax+edx] | ||
247 : | pxor mm1, mm6 ; mm1=(j^k). preserved for next step | ||
248 : | Isibaar | 262 | |
249 : | edgomez | 1382 | por mm3, mm1 ; ij |= jk |
250 : | movq mm6, mm2 | ||
251 : | pxor mm6, mm0 ; mm6 = s^t | ||
252 : | pand mm3, mm6 ; (ij|jk) &= st | ||
253 : | pavgb mm2, mm0 ; mm2 = (s+t+1)/2 | ||
254 : | pand mm3, mm7 ; mask lsb | ||
255 : | psubb mm2, mm3 ; apply. | ||
256 : | Isibaar | 262 | |
257 : | edgomez | 1382 | movq [ecx], mm2 |
258 : | Isibaar | 262 | |
259 : | edgomez | 1382 | movq mm2, [eax] |
260 : | movq mm3, [eax+1] | ||
261 : | movq mm6, mm2 | ||
262 : | pavgb mm2, mm3 ; preserved for next iteration | ||
263 : | lea ecx,[ecx+edx] | ||
264 : | pxor mm3, mm6 ; preserved for next iteration | ||
265 : | Isibaar | 262 | |
266 : | edgomez | 1382 | por mm1, mm3 |
267 : | movq mm6, mm0 | ||
268 : | pxor mm6, mm2 | ||
269 : | pand mm1, mm6 | ||
270 : | pavgb mm0, mm2 | ||
271 : | Isibaar | 262 | |
272 : | edgomez | 1382 | pand mm1, mm7 |
273 : | psubb mm0, mm1 | ||
274 : | Isibaar | 262 | |
275 : | edgomez | 1382 | movq [ecx], mm0 |
276 : | Isibaar | 262 | %endmacro |
277 : | |||
278 : | %macro COPY_HV_SSE_RND1 0 | ||
279 : | edgomez | 1382 | lea eax, [eax+edx] |
280 : | Isibaar | 262 | |
281 : | edgomez | 1382 | movq mm0, [eax] |
282 : | movq mm1, [eax+1] | ||
283 : | Isibaar | 262 | |
284 : | edgomez | 1382 | movq mm6, mm0 |
285 : | pavgb mm0, mm1 ; mm0=(j+k+1)/2. preserved for next step | ||
286 : | lea eax, [eax+edx] | ||
287 : | pxor mm1, mm6 ; mm1=(j^k). preserved for next step | ||
288 : | Isibaar | 262 | |
289 : | edgomez | 1382 | pand mm3, mm1 |
290 : | movq mm6, mm2 | ||
291 : | pxor mm6, mm0 | ||
292 : | por mm3, mm6 | ||
293 : | pavgb mm2, mm0 | ||
294 : | pand mm3, mm7 | ||
295 : | psubb mm2, mm3 | ||
296 : | Isibaar | 262 | |
297 : | edgomez | 1382 | movq [ecx], mm2 |
298 : | Isibaar | 262 | |
299 : | edgomez | 1382 | movq mm2, [eax] |
300 : | movq mm3, [eax+1] | ||
301 : | movq mm6, mm2 | ||
302 : | pavgb mm2, mm3 ; preserved for next iteration | ||
303 : | lea ecx,[ecx+edx] | ||
304 : | pxor mm3, mm6 ; preserved for next iteration | ||
305 : | Isibaar | 262 | |
306 : | edgomez | 1382 | pand mm1, mm3 |
307 : | movq mm6, mm0 | ||
308 : | pxor mm6, mm2 | ||
309 : | por mm1, mm6 | ||
310 : | pavgb mm0, mm2 | ||
311 : | pand mm1, mm7 | ||
312 : | psubb mm0, mm1 | ||
313 : | Isibaar | 262 | |
314 : | edgomez | 1382 | movq [ecx], mm0 |
315 : | Isibaar | 262 | %endmacro |
316 : | |||
317 : | edgomez | 1382 | ALIGN 16 |
318 : | Isibaar | 262 | interpolate8x8_halfpel_hv_xmm: |
319 : | edgomez | 1382 | mov eax, [esp+16] ; rounding |
320 : | mov ecx, [esp+ 4] ; Dst | ||
321 : | test eax, eax | ||
322 : | mov eax, [esp+ 8] ; Src | ||
323 : | mov edx, [esp+12] ; stride | ||
324 : | Isibaar | 262 | |
325 : | movq mm7, [mmx_one] | ||
326 : | |||
327 : | ; loop invariants: mm2=(i+j+1)/2 and mm3= i^j | ||
328 : | movq mm2, [eax] | ||
329 : | movq mm3, [eax+1] | ||
330 : | movq mm6, mm2 | ||
331 : | pavgb mm2, mm3 | ||
332 : | edgomez | 1382 | pxor mm3, mm6 ; mm2/mm3 ready |
333 : | Isibaar | 262 | |
334 : | jnz near .rounding1 | ||
335 : | |||
336 : | COPY_HV_SSE_RND0 | ||
337 : | add ecx, edx | ||
338 : | COPY_HV_SSE_RND0 | ||
339 : | add ecx, edx | ||
340 : | COPY_HV_SSE_RND0 | ||
341 : | add ecx, edx | ||
342 : | COPY_HV_SSE_RND0 | ||
343 : | ret | ||
344 : | |||
345 : | .rounding1 | ||
346 : | COPY_HV_SSE_RND1 | ||
347 : | add ecx, edx | ||
348 : | COPY_HV_SSE_RND1 | ||
349 : | add ecx, edx | ||
350 : | COPY_HV_SSE_RND1 | ||
351 : | add ecx, edx | ||
352 : | COPY_HV_SSE_RND1 | ||
353 : | edgomez | 1382 | ret |
354 : | edgomez | 1540 | .endfunc |
355 : | edgomez | 1530 | |
356 : | ;=========================================================================== | ||
357 : | ; | ||
358 : | ; The next functions combine both source halfpel interpolation step and the | ||
359 : | ; averaging (with rouding) step to avoid wasting memory bandwidth computing | ||
360 : | ; intermediate halfpel images and then averaging them. | ||
361 : | ; | ||
362 : | ;=========================================================================== | ||
363 : | |||
364 : | %macro PROLOG0 0 | ||
365 : | mov ecx, [esp+ 4] ; Dst | ||
366 : | mov eax, [esp+ 8] ; Src | ||
367 : | mov edx, [esp+12] ; BpS | ||
368 : | %endmacro | ||
369 : | %macro PROLOG1 0 | ||
370 : | PROLOG0 | ||
371 : | test dword [esp+16], 1; Rounding? | ||
372 : | %endmacro | ||
373 : | %macro EPILOG 0 | ||
374 : | ret | ||
375 : | %endmacro | ||
376 : | |||
377 : | ;=========================================================================== | ||
378 : | ; | ||
379 : | ; void interpolate8x8_halfpel_add_xmm(uint8_t * const dst, | ||
380 : | ; const uint8_t * const src, | ||
381 : | ; const uint32_t stride, | ||
382 : | ; const uint32_t rounding); | ||
383 : | ; | ||
384 : | ; | ||
385 : | ;=========================================================================== | ||
386 : | |||
387 : | %macro ADD_FF 2 | ||
388 : | movq mm0, [eax+%1] | ||
389 : | movq mm1, [eax+%2] | ||
390 : | ;;--- | ||
391 : | ;; movq mm2, mm0 | ||
392 : | ;; movq mm3, mm1 | ||
393 : | ;;--- | ||
394 : | pavgb mm0, [ecx+%1] | ||
395 : | pavgb mm1, [ecx+%2] | ||
396 : | ;;-- | ||
397 : | ;; por mm2, [ecx+%1] | ||
398 : | ;; por mm3, [ecx+%2] | ||
399 : | ;; pand mm2, [mmx_one] | ||
400 : | ;; pand mm3, [mmx_one] | ||
401 : | ;; psubsb mm0, mm2 | ||
402 : | ;; psubsb mm1, mm3 | ||
403 : | ;;-- | ||
404 : | movq [ecx+%1], mm0 | ||
405 : | movq [ecx+%2], mm1 | ||
406 : | %endmacro | ||
407 : | |||
408 : | ALIGN 16 | ||
409 : | interpolate8x8_halfpel_add_xmm: ; 23c | ||
410 : | PROLOG1 | ||
411 : | ADD_FF 0, edx | ||
412 : | lea eax,[eax+2*edx] | ||
413 : | lea ecx,[ecx+2*edx] | ||
414 : | ADD_FF 0, edx | ||
415 : | lea eax,[eax+2*edx] | ||
416 : | lea ecx,[ecx+2*edx] | ||
417 : | ADD_FF 0, edx | ||
418 : | lea eax,[eax+2*edx] | ||
419 : | lea ecx,[ecx+2*edx] | ||
420 : | ADD_FF 0, edx | ||
421 : | EPILOG | ||
422 : | edgomez | 1540 | .endfunc |
423 : | edgomez | 1530 | |
424 : | ;=========================================================================== | ||
425 : | ; | ||
426 : | ; void interpolate8x8_halfpel_h_add_xmm(uint8_t * const dst, | ||
427 : | ; const uint8_t * const src, | ||
428 : | ; const uint32_t stride, | ||
429 : | ; const uint32_t rounding); | ||
430 : | ; | ||
431 : | ; | ||
432 : | ;=========================================================================== | ||
433 : | |||
434 : | |||
435 : | %macro ADD_FH_RND0 2 | ||
436 : | movq mm0, [eax+%1] | ||
437 : | movq mm1, [eax+%2] | ||
438 : | pavgb mm0, [eax+%1+1] | ||
439 : | pavgb mm1, [eax+%2+1] | ||
440 : | pavgb mm0, [ecx+%1] | ||
441 : | pavgb mm1, [ecx+%2] | ||
442 : | movq [ecx+%1],mm0 | ||
443 : | movq [ecx+%2],mm1 | ||
444 : | %endmacro | ||
445 : | |||
446 : | %macro ADD_FH_RND1 2 | ||
447 : | movq mm0, [eax+%1] | ||
448 : | movq mm1, [eax+%2] | ||
449 : | movq mm4, mm0 | ||
450 : | movq mm5, mm1 | ||
451 : | movq mm2, [eax+%1+1] | ||
452 : | movq mm3, [eax+%2+1] | ||
453 : | pavgb mm0, mm2 | ||
454 : | ; lea ?? | ||
455 : | pxor mm2, mm4 | ||
456 : | pavgb mm1, mm3 | ||
457 : | pxor mm3, mm5 | ||
458 : | pand mm2, [mmx_one] | ||
459 : | pand mm3, [mmx_one] | ||
460 : | psubb mm0, mm2 | ||
461 : | psubb mm1, mm3 | ||
462 : | pavgb mm0, [ecx+%1] | ||
463 : | pavgb mm1, [ecx+%2] | ||
464 : | movq [ecx+%1],mm0 | ||
465 : | movq [ecx+%2],mm1 | ||
466 : | %endmacro | ||
467 : | |||
468 : | ALIGN 16 | ||
469 : | interpolate8x8_halfpel_h_add_xmm: ; 32c | ||
470 : | PROLOG1 | ||
471 : | jnz near .Loop1 | ||
472 : | ADD_FH_RND0 0, edx | ||
473 : | lea eax,[eax+2*edx] | ||
474 : | lea ecx,[ecx+2*edx] | ||
475 : | ADD_FH_RND0 0, edx | ||
476 : | lea eax,[eax+2*edx] | ||
477 : | lea ecx,[ecx+2*edx] | ||
478 : | ADD_FH_RND0 0, edx | ||
479 : | lea eax,[eax+2*edx] | ||
480 : | lea ecx,[ecx+2*edx] | ||
481 : | ADD_FH_RND0 0, edx | ||
482 : | EPILOG | ||
483 : | |||
484 : | .Loop1 | ||
485 : | ; we use: (i+j)/2 = ( i+j+1 )/2 - (i^j)&1 | ||
486 : | ; movq mm7, [mmx_one] | ||
487 : | ADD_FH_RND1 0, edx | ||
488 : | lea eax,[eax+2*edx] | ||
489 : | lea ecx,[ecx+2*edx] | ||
490 : | ADD_FH_RND1 0, edx | ||
491 : | lea eax,[eax+2*edx] | ||
492 : | lea ecx,[ecx+2*edx] | ||
493 : | ADD_FH_RND1 0, edx | ||
494 : | lea eax,[eax+2*edx] | ||
495 : | lea ecx,[ecx+2*edx] | ||
496 : | ADD_FH_RND1 0, edx | ||
497 : | EPILOG | ||
498 : | edgomez | 1540 | .endfunc |
499 : | edgomez | 1530 | |
500 : | |||
501 : | ;=========================================================================== | ||
502 : | ; | ||
503 : | ; void interpolate8x8_halfpel_v_add_xmm(uint8_t * const dst, | ||
504 : | ; const uint8_t * const src, | ||
505 : | ; const uint32_t stride, | ||
506 : | ; const uint32_t rounding); | ||
507 : | ; | ||
508 : | ; | ||
509 : | ;=========================================================================== | ||
510 : | |||
511 : | %macro ADD_8_HF_RND0 0 | ||
512 : | movq mm0, [eax] | ||
513 : | movq mm1, [eax+edx] | ||
514 : | pavgb mm0, mm1 | ||
515 : | pavgb mm1, [eax+2*edx] | ||
516 : | lea eax,[eax+2*edx] | ||
517 : | pavgb mm0, [ecx] | ||
518 : | pavgb mm1, [ecx+edx] | ||
519 : | movq [ecx],mm0 | ||
520 : | movq [ecx+edx],mm1 | ||
521 : | %endmacro | ||
522 : | |||
523 : | %macro ADD_8_HF_RND1 0 | ||
524 : | movq mm1, [eax+edx] | ||
525 : | movq mm2, [eax+2*edx] | ||
526 : | lea eax,[eax+2*edx] | ||
527 : | movq mm4, mm0 | ||
528 : | movq mm5, mm1 | ||
529 : | pavgb mm0, mm1 | ||
530 : | pxor mm4, mm1 | ||
531 : | pavgb mm1, mm2 | ||
532 : | pxor mm5, mm2 | ||
533 : | pand mm4, mm7 ; lsb's of (i^j)... | ||
534 : | pand mm5, mm7 ; lsb's of (i^j)... | ||
535 : | psubb mm0, mm4 ; ...are substracted from result of pavgb | ||
536 : | pavgb mm0, [ecx] | ||
537 : | movq [ecx], mm0 | ||
538 : | psubb mm1, mm5 ; ...are substracted from result of pavgb | ||
539 : | pavgb mm1, [ecx+edx] | ||
540 : | movq [ecx+edx], mm1 | ||
541 : | %endmacro | ||
542 : | |||
543 : | ALIGN 16 | ||
544 : | interpolate8x8_halfpel_v_add_xmm: | ||
545 : | PROLOG1 | ||
546 : | |||
547 : | jnz near .Loop1 | ||
548 : | pxor mm7, mm7 ; this is a NOP | ||
549 : | |||
550 : | ADD_8_HF_RND0 | ||
551 : | lea ecx,[ecx+2*edx] | ||
552 : | ADD_8_HF_RND0 | ||
553 : | lea ecx,[ecx+2*edx] | ||
554 : | ADD_8_HF_RND0 | ||
555 : | lea ecx,[ecx+2*edx] | ||
556 : | ADD_8_HF_RND0 | ||
557 : | EPILOG | ||
558 : | |||
559 : | .Loop1 | ||
560 : | movq mm0, [eax] ; loop invariant | ||
561 : | movq mm7, [mmx_one] | ||
562 : | |||
563 : | ADD_8_HF_RND1 | ||
564 : | movq mm0, mm2 | ||
565 : | lea ecx,[ecx+2*edx] | ||
566 : | ADD_8_HF_RND1 | ||
567 : | movq mm0, mm2 | ||
568 : | lea ecx,[ecx+2*edx] | ||
569 : | ADD_8_HF_RND1 | ||
570 : | movq mm0, mm2 | ||
571 : | lea ecx,[ecx+2*edx] | ||
572 : | ADD_8_HF_RND1 | ||
573 : | EPILOG | ||
574 : | edgomez | 1540 | .endfunc |
575 : | edgomez | 1530 | |
576 : | ; The trick is to correct the result of 'pavgb' with some combination of the | ||
577 : | ; lsb's of the 4 input values i,j,k,l, and their intermediate 'pavgb' (s and t). | ||
578 : | ; The boolean relations are: | ||
579 : | ; (i+j+k+l+3)/4 = (s+t+1)/2 - (ij&kl)&st | ||
580 : | ; (i+j+k+l+2)/4 = (s+t+1)/2 - (ij|kl)&st | ||
581 : | ; (i+j+k+l+1)/4 = (s+t+1)/2 - (ij&kl)|st | ||
582 : | ; (i+j+k+l+0)/4 = (s+t+1)/2 - (ij|kl)|st | ||
583 : | ; with s=(i+j+1)/2, t=(k+l+1)/2, ij = i^j, kl = k^l, st = s^t. | ||
584 : | |||
585 : | ; Moreover, we process 2 lines at a times, for better overlapping (~15% faster). | ||
586 : | |||
587 : | ;=========================================================================== | ||
588 : | ; | ||
589 : | ; void interpolate8x8_halfpel_hv_add_xmm(uint8_t * const dst, | ||
590 : | ; const uint8_t * const src, | ||
591 : | ; const uint32_t stride, | ||
592 : | ; const uint32_t rounding); | ||
593 : | ; | ||
594 : | ; | ||
595 : | ;=========================================================================== | ||
596 : | |||
597 : | %macro ADD_HH_RND0 0 | ||
598 : | lea eax,[eax+edx] | ||
599 : | |||
600 : | movq mm0, [eax] | ||
601 : | movq mm1, [eax+1] | ||
602 : | |||
603 : | movq mm6, mm0 | ||
604 : | pavgb mm0, mm1 ; mm0=(j+k+1)/2. preserved for next step | ||
605 : | lea eax,[eax+edx] | ||
606 : | pxor mm1, mm6 ; mm1=(j^k). preserved for next step | ||
607 : | |||
608 : | por mm3, mm1 ; ij |= jk | ||
609 : | movq mm6, mm2 | ||
610 : | pxor mm6, mm0 ; mm6 = s^t | ||
611 : | pand mm3, mm6 ; (ij|jk) &= st | ||
612 : | pavgb mm2, mm0 ; mm2 = (s+t+1)/2 | ||
613 : | pand mm3, mm7 ; mask lsb | ||
614 : | psubb mm2, mm3 ; apply. | ||
615 : | |||
616 : | pavgb mm2, [ecx] | ||
617 : | movq [ecx], mm2 | ||
618 : | |||
619 : | movq mm2, [eax] | ||
620 : | movq mm3, [eax+1] | ||
621 : | movq mm6, mm2 | ||
622 : | pavgb mm2, mm3 ; preserved for next iteration | ||
623 : | lea ecx,[ecx+edx] | ||
624 : | pxor mm3, mm6 ; preserved for next iteration | ||
625 : | |||
626 : | por mm1, mm3 | ||
627 : | movq mm6, mm0 | ||
628 : | pxor mm6, mm2 | ||
629 : | pand mm1, mm6 | ||
630 : | pavgb mm0, mm2 | ||
631 : | |||
632 : | pand mm1, mm7 | ||
633 : | psubb mm0, mm1 | ||
634 : | |||
635 : | pavgb mm0, [ecx] | ||
636 : | movq [ecx], mm0 | ||
637 : | %endmacro | ||
638 : | |||
639 : | %macro ADD_HH_RND1 0 | ||
640 : | lea eax,[eax+edx] | ||
641 : | |||
642 : | movq mm0, [eax] | ||
643 : | movq mm1, [eax+1] | ||
644 : | |||
645 : | movq mm6, mm0 | ||
646 : | pavgb mm0, mm1 ; mm0=(j+k+1)/2. preserved for next step | ||
647 : | lea eax,[eax+edx] | ||
648 : | pxor mm1, mm6 ; mm1=(j^k). preserved for next step | ||
649 : | |||
650 : | pand mm3, mm1 | ||
651 : | movq mm6, mm2 | ||
652 : | pxor mm6, mm0 | ||
653 : | por mm3, mm6 | ||
654 : | pavgb mm2, mm0 | ||
655 : | pand mm3, mm7 | ||
656 : | psubb mm2, mm3 | ||
657 : | |||
658 : | pavgb mm2, [ecx] | ||
659 : | movq [ecx], mm2 | ||
660 : | |||
661 : | movq mm2, [eax] | ||
662 : | movq mm3, [eax+1] | ||
663 : | movq mm6, mm2 | ||
664 : | pavgb mm2, mm3 ; preserved for next iteration | ||
665 : | lea ecx,[ecx+edx] | ||
666 : | pxor mm3, mm6 ; preserved for next iteration | ||
667 : | |||
668 : | pand mm1, mm3 | ||
669 : | movq mm6, mm0 | ||
670 : | pxor mm6, mm2 | ||
671 : | por mm1, mm6 | ||
672 : | pavgb mm0, mm2 | ||
673 : | pand mm1, mm7 | ||
674 : | psubb mm0, mm1 | ||
675 : | |||
676 : | pavgb mm0, [ecx] | ||
677 : | movq [ecx], mm0 | ||
678 : | %endmacro | ||
679 : | |||
680 : | ALIGN 16 | ||
681 : | interpolate8x8_halfpel_hv_add_xmm: | ||
682 : | PROLOG1 | ||
683 : | |||
684 : | movq mm7, [mmx_one] | ||
685 : | |||
686 : | ; loop invariants: mm2=(i+j+1)/2 and mm3= i^j | ||
687 : | movq mm2, [eax] | ||
688 : | movq mm3, [eax+1] | ||
689 : | movq mm6, mm2 | ||
690 : | pavgb mm2, mm3 | ||
691 : | pxor mm3, mm6 ; mm2/mm3 ready | ||
692 : | |||
693 : | jnz near .Loop1 | ||
694 : | |||
695 : | ADD_HH_RND0 | ||
696 : | add ecx, edx | ||
697 : | ADD_HH_RND0 | ||
698 : | add ecx, edx | ||
699 : | ADD_HH_RND0 | ||
700 : | add ecx, edx | ||
701 : | ADD_HH_RND0 | ||
702 : | EPILOG | ||
703 : | |||
704 : | .Loop1 | ||
705 : | ADD_HH_RND1 | ||
706 : | add ecx, edx | ||
707 : | ADD_HH_RND1 | ||
708 : | add ecx, edx | ||
709 : | ADD_HH_RND1 | ||
710 : | add ecx, edx | ||
711 : | ADD_HH_RND1 | ||
712 : | |||
713 : | EPILOG | ||
714 : | edgomez | 1540 | .endfunc |
715 : |
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