Parent Directory | Revision Log
Revision 1.14 - (view) (download)
1 : | edgomez | 1.5 | ;/***************************************************************************** |
2 : | Isibaar | 1.1 | ; * |
3 : | edgomez | 1.5 | ; * XVID MPEG-4 VIDEO CODEC |
4 : | ; * - 3dnow 8x8 block-based halfpel interpolation - | ||
5 : | Isibaar | 1.1 | ; * |
6 : | edgomez | 1.5 | ; * Copyright(C) 2001 Peter Ross <pross@xvid.org> |
7 : | Isibaar | 1.12 | ; * 2002-2008 Michael Militzer <michael@xvid.org> |
8 : | edgomez | 1.5 | ; * 2002 Pascal Massimino <skal@planet-d.net> |
9 : | Isibaar | 1.1 | ; * |
10 : | edgomez | 1.5 | ; * 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 : | edgomez | 1.3 | ; * |
15 : | edgomez | 1.5 | ; * 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 : | Isibaar | 1.1 | ; * |
20 : | edgomez | 1.5 | ; * 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 : | edgomez | 1.4 | ; * |
24 : | edgomez | 1.5 | ; ****************************************************************************/ |
25 : | edgomez | 1.4 | |
26 : | Isibaar | 1.12 | %include "nasm.inc" |
27 : | Isibaar | 1.1 | |
28 : | edgomez | 1.5 | ;============================================================================= |
29 : | ; Read Only data | ||
30 : | ;============================================================================= | ||
31 : | |||
32 : | Isibaar | 1.12 | DATA |
33 : | edgomez | 1.5 | |
34 : | Isibaar | 1.12 | ALIGN SECTION_ALIGN |
35 : | edgomez | 1.5 | mmx_one: |
36 : | times 8 db 1 | ||
37 : | |||
38 : | ;============================================================================= | ||
39 : | ; Code | ||
40 : | ;============================================================================= | ||
41 : | Isibaar | 1.1 | |
42 : | Isibaar | 1.13 | TEXT |
43 : | Isibaar | 1.1 | |
44 : | cglobal interpolate8x8_halfpel_h_3dn | ||
45 : | cglobal interpolate8x8_halfpel_v_3dn | ||
46 : | cglobal interpolate8x8_halfpel_hv_3dn | ||
47 : | |||
48 : | suxen_drol | 1.9 | cglobal interpolate8x4_halfpel_h_3dn |
49 : | cglobal interpolate8x4_halfpel_v_3dn | ||
50 : | cglobal interpolate8x4_halfpel_hv_3dn | ||
51 : | |||
52 : | edgomez | 1.5 | ;----------------------------------------------------------------------------- |
53 : | Isibaar | 1.1 | ; |
54 : | ; void interpolate8x8_halfpel_h_3dn(uint8_t * const dst, | ||
55 : | edgomez | 1.5 | ; const uint8_t * const src, |
56 : | ; const uint32_t stride, | ||
57 : | ; const uint32_t rounding); | ||
58 : | Isibaar | 1.1 | ; |
59 : | edgomez | 1.5 | ;----------------------------------------------------------------------------- |
60 : | Isibaar | 1.1 | |
61 : | %macro COPY_H_3DN_RND0 0 | ||
62 : | Isibaar | 1.12 | movq mm0, [_EAX] |
63 : | pavgusb mm0, [_EAX+1] | ||
64 : | movq mm1, [_EAX+TMP1] | ||
65 : | pavgusb mm1, [_EAX+TMP1+1] | ||
66 : | lea _EAX, [_EAX+2*TMP1] | ||
67 : | movq [TMP0], mm0 | ||
68 : | movq [TMP0+TMP1], mm1 | ||
69 : | Isibaar | 1.1 | %endmacro |
70 : | |||
71 : | %macro COPY_H_3DN_RND1 0 | ||
72 : | Isibaar | 1.12 | movq mm0, [_EAX] |
73 : | movq mm1, [_EAX+TMP1] | ||
74 : | Isibaar | 1.1 | movq mm4, mm0 |
75 : | movq mm5, mm1 | ||
76 : | Isibaar | 1.12 | movq mm2, [_EAX+1] |
77 : | movq mm3, [_EAX+TMP1+1] | ||
78 : | Isibaar | 1.1 | pavgusb mm0, mm2 |
79 : | pxor mm2, mm4 | ||
80 : | pavgusb mm1, mm3 | ||
81 : | Isibaar | 1.12 | lea _EAX, [_EAX+2*TMP1] |
82 : | Isibaar | 1.1 | pxor mm3, mm5 |
83 : | pand mm2, mm7 | ||
84 : | pand mm3, mm7 | ||
85 : | psubb mm0, mm2 | ||
86 : | Isibaar | 1.12 | movq [TMP0], mm0 |
87 : | Isibaar | 1.1 | psubb mm1, mm3 |
88 : | Isibaar | 1.12 | movq [TMP0+TMP1], mm1 |
89 : | Isibaar | 1.1 | %endmacro |
90 : | |||
91 : | Isibaar | 1.12 | ALIGN SECTION_ALIGN |
92 : | Isibaar | 1.1 | interpolate8x8_halfpel_h_3dn: |
93 : | |||
94 : | Isibaar | 1.12 | mov _EAX, prm4 ; rounding |
95 : | mov TMP0, prm1 ; Dst | ||
96 : | test _EAX, _EAX | ||
97 : | mov _EAX, prm2 ; Src | ||
98 : | mov TMP1, prm3 ; stride | ||
99 : | Isibaar | 1.1 | |
100 : | jnz near .rounding1 | ||
101 : | |||
102 : | COPY_H_3DN_RND0 | ||
103 : | Isibaar | 1.12 | lea TMP0, [TMP0+2*TMP1] |
104 : | Isibaar | 1.1 | COPY_H_3DN_RND0 |
105 : | Isibaar | 1.12 | lea TMP0, [TMP0+2*TMP1] |
106 : | Isibaar | 1.1 | COPY_H_3DN_RND0 |
107 : | Isibaar | 1.12 | lea TMP0, [TMP0+2*TMP1] |
108 : | Isibaar | 1.1 | COPY_H_3DN_RND0 |
109 : | ret | ||
110 : | |||
111 : | Isibaar | 1.11 | .rounding1: |
112 : | edgomez | 1.5 | ; we use: (i+j)/2 = ( i+j+1 )/2 - (i^j)&1 |
113 : | Isibaar | 1.1 | movq mm7, [mmx_one] |
114 : | COPY_H_3DN_RND1 | ||
115 : | Isibaar | 1.12 | lea TMP0, [TMP0+2*TMP1] |
116 : | Isibaar | 1.1 | COPY_H_3DN_RND1 |
117 : | Isibaar | 1.12 | lea TMP0, [TMP0+2*TMP1] |
118 : | Isibaar | 1.1 | COPY_H_3DN_RND1 |
119 : | Isibaar | 1.12 | lea TMP0, [TMP0+2*TMP1] |
120 : | Isibaar | 1.1 | COPY_H_3DN_RND1 |
121 : | ret | ||
122 : | Isibaar | 1.11 | ENDFUNC |
123 : | Isibaar | 1.1 | |
124 : | |||
125 : | edgomez | 1.5 | ;----------------------------------------------------------------------------- |
126 : | Isibaar | 1.1 | ; |
127 : | ; void interpolate8x8_halfpel_v_3dn(uint8_t * const dst, | ||
128 : | edgomez | 1.5 | ; const uint8_t * const src, |
129 : | ; const uint32_t stride, | ||
130 : | ; const uint32_t rounding); | ||
131 : | Isibaar | 1.1 | ; |
132 : | edgomez | 1.5 | ;----------------------------------------------------------------------------- |
133 : | Isibaar | 1.1 | |
134 : | %macro COPY_V_3DN_RND0 0 | ||
135 : | Isibaar | 1.12 | movq mm0, [_EAX] |
136 : | movq mm1, [_EAX+TMP1] | ||
137 : | Isibaar | 1.1 | pavgusb mm0, mm1 |
138 : | Isibaar | 1.12 | pavgusb mm1, [_EAX+2*TMP1] |
139 : | lea _EAX, [_EAX+2*TMP1] | ||
140 : | movq [TMP0], mm0 | ||
141 : | movq [TMP0+TMP1], mm1 | ||
142 : | Isibaar | 1.1 | %endmacro |
143 : | |||
144 : | %macro COPY_V_3DN_RND1 0 | ||
145 : | movq mm0, mm2 | ||
146 : | Isibaar | 1.12 | movq mm1, [_EAX] |
147 : | movq mm2, [_EAX+TMP1] | ||
148 : | lea _EAX, [_EAX+2*TMP1] | ||
149 : | Isibaar | 1.1 | movq mm4, mm0 |
150 : | movq mm5, mm1 | ||
151 : | pavgusb mm0, mm1 | ||
152 : | edgomez | 1.5 | pxor mm4, mm1 |
153 : | Isibaar | 1.1 | pavgusb mm1, mm2 |
154 : | pxor mm5, mm2 | ||
155 : | edgomez | 1.5 | pand mm4, mm7 ; lsb's of (i^j)... |
156 : | pand mm5, mm7 ; lsb's of (i^j)... | ||
157 : | psubb mm0, mm4 ; ...are substracted from result of pavgusb | ||
158 : | Isibaar | 1.12 | movq [TMP0], mm0 |
159 : | edgomez | 1.5 | psubb mm1, mm5 ; ...are substracted from result of pavgusb |
160 : | Isibaar | 1.12 | movq [TMP0+TMP1], mm1 |
161 : | Isibaar | 1.1 | %endmacro |
162 : | |||
163 : | Isibaar | 1.12 | ALIGN SECTION_ALIGN |
164 : | Isibaar | 1.1 | interpolate8x8_halfpel_v_3dn: |
165 : | |||
166 : | Isibaar | 1.12 | mov _EAX, prm4 ; rounding |
167 : | mov TMP0, prm1 ; Dst | ||
168 : | test _EAX,_EAX | ||
169 : | mov _EAX, prm2 ; Src | ||
170 : | mov TMP1, prm3 ; stride | ||
171 : | Isibaar | 1.1 | |
172 : | ; we process 2 line at a time | ||
173 : | |||
174 : | jnz near .rounding1 | ||
175 : | |||
176 : | COPY_V_3DN_RND0 | ||
177 : | Isibaar | 1.12 | lea TMP0, [TMP0+2*TMP1] |
178 : | Isibaar | 1.1 | COPY_V_3DN_RND0 |
179 : | Isibaar | 1.12 | lea TMP0, [TMP0+2*TMP1] |
180 : | Isibaar | 1.1 | COPY_V_3DN_RND0 |
181 : | Isibaar | 1.12 | lea TMP0, [TMP0+2*TMP1] |
182 : | Isibaar | 1.1 | COPY_V_3DN_RND0 |
183 : | ret | ||
184 : | |||
185 : | Isibaar | 1.11 | .rounding1: |
186 : | edgomez | 1.5 | ; we use: (i+j)/2 = ( i+j+1 )/2 - (i^j)&1 |
187 : | Isibaar | 1.1 | movq mm7, [mmx_one] |
188 : | Isibaar | 1.12 | movq mm2, [_EAX] ; loop invariant |
189 : | add _EAX, TMP1 | ||
190 : | Isibaar | 1.1 | |
191 : | COPY_V_3DN_RND1 | ||
192 : | Isibaar | 1.12 | lea TMP0, [TMP0+2*TMP1] |
193 : | Isibaar | 1.1 | COPY_V_3DN_RND1 |
194 : | Isibaar | 1.12 | lea TMP0, [TMP0+2*TMP1] |
195 : | Isibaar | 1.1 | COPY_V_3DN_RND1 |
196 : | Isibaar | 1.12 | lea TMP0, [TMP0+2*TMP1] |
197 : | Isibaar | 1.1 | COPY_V_3DN_RND1 |
198 : | ret | ||
199 : | Isibaar | 1.11 | ENDFUNC |
200 : | Isibaar | 1.1 | |
201 : | |||
202 : | edgomez | 1.5 | ;----------------------------------------------------------------------------- |
203 : | Isibaar | 1.1 | ; |
204 : | ; void interpolate8x8_halfpel_hv_3dn(uint8_t * const dst, | ||
205 : | edgomez | 1.5 | ; const uint8_t * const src, |
206 : | ; const uint32_t stride, | ||
207 : | ; const uint32_t rounding); | ||
208 : | Isibaar | 1.1 | ; |
209 : | ; | ||
210 : | edgomez | 1.5 | ;----------------------------------------------------------------------------- |
211 : | Isibaar | 1.1 | |
212 : | ; The trick is to correct the result of 'pavgusb' with some combination of the | ||
213 : | ; lsb's of the 4 input values i,j,k,l, and their intermediate 'pavgusb' (s and t). | ||
214 : | ; The boolean relations are: | ||
215 : | edgomez | 1.5 | ; (i+j+k+l+3)/4 = (s+t+1)/2 - (ij&kl)&st |
216 : | Isibaar | 1.1 | ; (i+j+k+l+2)/4 = (s+t+1)/2 - (ij|kl)&st |
217 : | ; (i+j+k+l+1)/4 = (s+t+1)/2 - (ij&kl)|st | ||
218 : | ; (i+j+k+l+0)/4 = (s+t+1)/2 - (ij|kl)|st | ||
219 : | ; with s=(i+j+1)/2, t=(k+l+1)/2, ij = i^j, kl = k^l, st = s^t. | ||
220 : | |||
221 : | ; Moreover, we process 2 lines at a times, for better overlapping (~15% faster). | ||
222 : | |||
223 : | %macro COPY_HV_3DN_RND0 0 | ||
224 : | Isibaar | 1.12 | lea _EAX, [_EAX+TMP1] |
225 : | edgomez | 1.5 | |
226 : | Isibaar | 1.12 | movq mm0, [_EAX] |
227 : | movq mm1, [_EAX+1] | ||
228 : | edgomez | 1.5 | |
229 : | movq mm6, mm0 | ||
230 : | pavgusb mm0, mm1 ; mm0=(j+k+1)/2. preserved for next step | ||
231 : | Isibaar | 1.12 | lea _EAX, [_EAX+TMP1] |
232 : | edgomez | 1.5 | pxor mm1, mm6 ; mm1=(j^k). preserved for next step |
233 : | |||
234 : | por mm3, mm1 ; ij |= jk | ||
235 : | movq mm6, mm2 | ||
236 : | pxor mm6, mm0 ; mm6 = s^t | ||
237 : | pand mm3, mm6 ; (ij|jk) &= st | ||
238 : | pavgusb mm2, mm0 ; mm2 = (s+t+1)/2 | ||
239 : | pand mm3, mm7 ; mask lsb | ||
240 : | psubb mm2, mm3 ; apply. | ||
241 : | Isibaar | 1.1 | |
242 : | Isibaar | 1.12 | movq [TMP0], mm2 |
243 : | Isibaar | 1.1 | |
244 : | Isibaar | 1.12 | movq mm2, [_EAX] |
245 : | movq mm3, [_EAX+1] | ||
246 : | edgomez | 1.5 | movq mm6, mm2 |
247 : | pavgusb mm2, mm3 ; preserved for next iteration | ||
248 : | Isibaar | 1.12 | lea TMP0, [TMP0+TMP1] |
249 : | edgomez | 1.5 | pxor mm3, mm6 ; preserved for next iteration |
250 : | |||
251 : | por mm1, mm3 | ||
252 : | movq mm6, mm0 | ||
253 : | pxor mm6, mm2 | ||
254 : | pand mm1, mm6 | ||
255 : | pavgusb mm0, mm2 | ||
256 : | Isibaar | 1.1 | |
257 : | edgomez | 1.5 | pand mm1, mm7 |
258 : | psubb mm0, mm1 | ||
259 : | Isibaar | 1.1 | |
260 : | Isibaar | 1.12 | movq [TMP0], mm0 |
261 : | Isibaar | 1.1 | %endmacro |
262 : | |||
263 : | %macro COPY_HV_3DN_RND1 0 | ||
264 : | Isibaar | 1.12 | lea _EAX,[_EAX+TMP1] |
265 : | edgomez | 1.5 | |
266 : | Isibaar | 1.12 | movq mm0, [_EAX] |
267 : | movq mm1, [_EAX+1] | ||
268 : | edgomez | 1.5 | |
269 : | movq mm6, mm0 | ||
270 : | pavgusb mm0, mm1 ; mm0=(j+k+1)/2. preserved for next step | ||
271 : | Isibaar | 1.12 | lea _EAX, [_EAX+TMP1] |
272 : | edgomez | 1.5 | pxor mm1, mm6 ; mm1=(j^k). preserved for next step |
273 : | |||
274 : | pand mm3, mm1 | ||
275 : | movq mm6, mm2 | ||
276 : | pxor mm6, mm0 | ||
277 : | por mm3, mm6 | ||
278 : | pavgusb mm2, mm0 | ||
279 : | pand mm3, mm7 | ||
280 : | psubb mm2, mm3 | ||
281 : | Isibaar | 1.1 | |
282 : | Isibaar | 1.12 | movq [TMP0], mm2 |
283 : | Isibaar | 1.1 | |
284 : | Isibaar | 1.12 | movq mm2, [_EAX] |
285 : | movq mm3, [_EAX+1] | ||
286 : | edgomez | 1.5 | movq mm6, mm2 |
287 : | pavgusb mm2, mm3 ; preserved for next iteration | ||
288 : | Isibaar | 1.12 | lea TMP0, [TMP0+TMP1] |
289 : | edgomez | 1.5 | pxor mm3, mm6 ; preserved for next iteration |
290 : | |||
291 : | pand mm1, mm3 | ||
292 : | movq mm6, mm0 | ||
293 : | pxor mm6, mm2 | ||
294 : | por mm1, mm6 | ||
295 : | pavgusb mm0, mm2 | ||
296 : | pand mm1, mm7 | ||
297 : | psubb mm0, mm1 | ||
298 : | Isibaar | 1.1 | |
299 : | Isibaar | 1.12 | movq [TMP0], mm0 |
300 : | Isibaar | 1.1 | %endmacro |
301 : | |||
302 : | Isibaar | 1.12 | ALIGN SECTION_ALIGN |
303 : | Isibaar | 1.11 | interpolate8x8_halfpel_hv_3dn: |
304 : | Isibaar | 1.12 | mov _EAX, prm4 ; rounding |
305 : | mov TMP0, prm1 ; Dst | ||
306 : | test _EAX, _EAX | ||
307 : | mov _EAX, prm2 ; Src | ||
308 : | mov TMP1, prm3 ; stride | ||
309 : | Isibaar | 1.1 | |
310 : | movq mm7, [mmx_one] | ||
311 : | |||
312 : | ; loop invariants: mm2=(i+j+1)/2 and mm3= i^j | ||
313 : | Isibaar | 1.12 | movq mm2, [_EAX] |
314 : | movq mm3, [_EAX+1] | ||
315 : | Isibaar | 1.1 | movq mm6, mm2 |
316 : | pavgusb mm2, mm3 | ||
317 : | edgomez | 1.5 | pxor mm3, mm6 ; mm2/mm3 ready |
318 : | Isibaar | 1.1 | |
319 : | jnz near .rounding1 | ||
320 : | |||
321 : | COPY_HV_3DN_RND0 | ||
322 : | Isibaar | 1.12 | add TMP0, TMP1 |
323 : | Isibaar | 1.1 | COPY_HV_3DN_RND0 |
324 : | Isibaar | 1.12 | add TMP0, TMP1 |
325 : | Isibaar | 1.1 | COPY_HV_3DN_RND0 |
326 : | Isibaar | 1.12 | add TMP0, TMP1 |
327 : | Isibaar | 1.1 | COPY_HV_3DN_RND0 |
328 : | ret | ||
329 : | |||
330 : | Isibaar | 1.11 | .rounding1: |
331 : | Isibaar | 1.1 | COPY_HV_3DN_RND1 |
332 : | Isibaar | 1.12 | add TMP0, TMP1 |
333 : | Isibaar | 1.1 | COPY_HV_3DN_RND1 |
334 : | Isibaar | 1.12 | add TMP0, TMP1 |
335 : | Isibaar | 1.1 | COPY_HV_3DN_RND1 |
336 : | Isibaar | 1.12 | add TMP0, TMP1 |
337 : | Isibaar | 1.1 | COPY_HV_3DN_RND1 |
338 : | edgomez | 1.5 | ret |
339 : | Isibaar | 1.11 | ENDFUNC |
340 : | edgomez | 1.8 | |
341 : | suxen_drol | 1.9 | ;----------------------------------------------------------------------------- |
342 : | ; | ||
343 : | ; void interpolate8x4_halfpel_h_3dn(uint8_t * const dst, | ||
344 : | ; const uint8_t * const src, | ||
345 : | ; const uint32_t stride, | ||
346 : | ; const uint32_t rounding); | ||
347 : | ; | ||
348 : | ;----------------------------------------------------------------------------- | ||
349 : | |||
350 : | Isibaar | 1.12 | ALIGN SECTION_ALIGN |
351 : | suxen_drol | 1.9 | interpolate8x4_halfpel_h_3dn: |
352 : | |||
353 : | Isibaar | 1.12 | mov _EAX, prm4 ; rounding |
354 : | mov TMP0, prm1 ; Dst | ||
355 : | test _EAX, _EAX | ||
356 : | mov _EAX, prm2 ; Src | ||
357 : | mov TMP1, prm3 ; stride | ||
358 : | suxen_drol | 1.9 | |
359 : | jnz near .rounding1 | ||
360 : | |||
361 : | COPY_H_3DN_RND0 | ||
362 : | Isibaar | 1.12 | lea TMP0, [TMP0+2*TMP1] |
363 : | suxen_drol | 1.9 | COPY_H_3DN_RND0 |
364 : | ret | ||
365 : | |||
366 : | Isibaar | 1.11 | .rounding1: |
367 : | suxen_drol | 1.9 | ; we use: (i+j)/2 = ( i+j+1 )/2 - (i^j)&1 |
368 : | movq mm7, [mmx_one] | ||
369 : | COPY_H_3DN_RND1 | ||
370 : | Isibaar | 1.12 | lea TMP0, [TMP0+2*TMP1] |
371 : | suxen_drol | 1.9 | COPY_H_3DN_RND1 |
372 : | ret | ||
373 : | Isibaar | 1.11 | ENDFUNC |
374 : | suxen_drol | 1.9 | |
375 : | |||
376 : | ;----------------------------------------------------------------------------- | ||
377 : | ; | ||
378 : | ; void interpolate8x4_halfpel_v_3dn(uint8_t * const dst, | ||
379 : | ; const uint8_t * const src, | ||
380 : | ; const uint32_t stride, | ||
381 : | ; const uint32_t rounding); | ||
382 : | ; | ||
383 : | ;----------------------------------------------------------------------------- | ||
384 : | |||
385 : | Isibaar | 1.12 | ALIGN SECTION_ALIGN |
386 : | suxen_drol | 1.9 | interpolate8x4_halfpel_v_3dn: |
387 : | |||
388 : | Isibaar | 1.12 | mov _EAX, prm4 ; rounding |
389 : | mov TMP0, prm1 ; Dst | ||
390 : | test _EAX,_EAX | ||
391 : | mov _EAX, prm2 ; Src | ||
392 : | mov TMP1, prm3 ; stride | ||
393 : | suxen_drol | 1.9 | |
394 : | ; we process 2 line at a time | ||
395 : | |||
396 : | jnz near .rounding1 | ||
397 : | |||
398 : | COPY_V_3DN_RND0 | ||
399 : | Isibaar | 1.12 | lea TMP0, [TMP0+2*TMP1] |
400 : | suxen_drol | 1.9 | COPY_V_3DN_RND0 |
401 : | ret | ||
402 : | |||
403 : | Isibaar | 1.11 | .rounding1: |
404 : | suxen_drol | 1.9 | ; we use: (i+j)/2 = ( i+j+1 )/2 - (i^j)&1 |
405 : | movq mm7, [mmx_one] | ||
406 : | Isibaar | 1.12 | movq mm2, [_EAX] ; loop invariant |
407 : | add _EAX, TMP1 | ||
408 : | suxen_drol | 1.9 | |
409 : | COPY_V_3DN_RND1 | ||
410 : | Isibaar | 1.12 | lea TMP0, [TMP0+2*TMP1] |
411 : | suxen_drol | 1.9 | COPY_V_3DN_RND1 |
412 : | ret | ||
413 : | Isibaar | 1.11 | ENDFUNC |
414 : | suxen_drol | 1.9 | |
415 : | |||
416 : | ;----------------------------------------------------------------------------- | ||
417 : | ; | ||
418 : | ; void interpolate8x4_halfpel_hv_3dn(uint8_t * const dst, | ||
419 : | ; const uint8_t * const src, | ||
420 : | ; const uint32_t stride, | ||
421 : | ; const uint32_t rounding); | ||
422 : | ; | ||
423 : | ; | ||
424 : | ;----------------------------------------------------------------------------- | ||
425 : | |||
426 : | ; The trick is to correct the result of 'pavgusb' with some combination of the | ||
427 : | ; lsb's of the 4 input values i,j,k,l, and their intermediate 'pavgusb' (s and t). | ||
428 : | ; The boolean relations are: | ||
429 : | ; (i+j+k+l+3)/4 = (s+t+1)/2 - (ij&kl)&st | ||
430 : | ; (i+j+k+l+2)/4 = (s+t+1)/2 - (ij|kl)&st | ||
431 : | ; (i+j+k+l+1)/4 = (s+t+1)/2 - (ij&kl)|st | ||
432 : | ; (i+j+k+l+0)/4 = (s+t+1)/2 - (ij|kl)|st | ||
433 : | ; with s=(i+j+1)/2, t=(k+l+1)/2, ij = i^j, kl = k^l, st = s^t. | ||
434 : | |||
435 : | Isibaar | 1.12 | ALIGN SECTION_ALIGN |
436 : | Isibaar | 1.11 | interpolate8x4_halfpel_hv_3dn: |
437 : | Isibaar | 1.12 | mov _EAX, prm4 ; rounding |
438 : | mov TMP0, prm1 ; Dst | ||
439 : | test _EAX, _EAX | ||
440 : | mov _EAX, prm2 ; Src | ||
441 : | mov TMP1, prm3 ; stride | ||
442 : | suxen_drol | 1.9 | |
443 : | movq mm7, [mmx_one] | ||
444 : | |||
445 : | ; loop invariants: mm2=(i+j+1)/2 and mm3= i^j | ||
446 : | Isibaar | 1.12 | movq mm2, [_EAX] |
447 : | movq mm3, [_EAX+1] | ||
448 : | suxen_drol | 1.9 | movq mm6, mm2 |
449 : | pavgusb mm2, mm3 | ||
450 : | pxor mm3, mm6 ; mm2/mm3 ready | ||
451 : | |||
452 : | jnz near .rounding1 | ||
453 : | |||
454 : | COPY_HV_3DN_RND0 | ||
455 : | Isibaar | 1.12 | add TMP0, TMP1 |
456 : | suxen_drol | 1.9 | COPY_HV_3DN_RND0 |
457 : | ret | ||
458 : | |||
459 : | Isibaar | 1.11 | .rounding1: |
460 : | suxen_drol | 1.9 | COPY_HV_3DN_RND1 |
461 : | Isibaar | 1.12 | add TMP0, TMP1 |
462 : | suxen_drol | 1.9 | COPY_HV_3DN_RND1 |
463 : | ret | ||
464 : | Isibaar | 1.11 | ENDFUNC |
465 : | suxen_drol | 1.9 | |
466 : | Isibaar | 1.14 | NON_EXEC_STACK |
No admin address has been configured | ViewVC Help |
Powered by ViewVC 1.0.4 |