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1 | /* |
2 | * Copyright (c) 2002 Brian Foley | |
3 | * Copyright (c) 2002 Dieter Shirley | |
4 | * Copyright (c) 2003-2004 Romain Dolbeau <romain@dolbeau.org> | |
5 | * | |
6 | * This file is part of FFmpeg. | |
7 | * | |
8 | * FFmpeg is free software; you can redistribute it and/or | |
9 | * modify it under the terms of the GNU Lesser General Public | |
10 | * License as published by the Free Software Foundation; either | |
11 | * version 2.1 of the License, or (at your option) any later version. | |
12 | * | |
13 | * FFmpeg is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | * Lesser General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU Lesser General Public | |
19 | * License along with FFmpeg; if not, write to the Free Software | |
20 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
21 | */ | |
22 | ||
23 | #include "config.h" | |
24 | #if HAVE_ALTIVEC_H | |
25 | #include <altivec.h> | |
26 | #endif | |
27 | ||
28 | #include "libavutil/attributes.h" | |
29 | #include "libavutil/cpu.h" | |
30 | #include "libavutil/ppc/cpu.h" | |
31 | #include "libavutil/ppc/types_altivec.h" | |
32 | #include "libavutil/ppc/util_altivec.h" | |
33 | #include "libavcodec/avcodec.h" | |
34 | #include "libavcodec/mpegvideo.h" | |
35 | #include "libavcodec/me_cmp.h" | |
36 | ||
37 | #if HAVE_ALTIVEC | |
38 | static int sad16_x2_altivec(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2, | |
39 | int line_size, int h) | |
40 | { | |
41 | int i, s = 0; | |
42 | const vector unsigned char zero = | |
43 | (const vector unsigned char) vec_splat_u8(0); | |
44 | vector unsigned char perm1 = vec_lvsl(0, pix2); | |
45 | vector unsigned char perm2 = vec_add(perm1, vec_splat_u8(1)); | |
46 | vector unsigned int sad = (vector unsigned int) vec_splat_u32(0); | |
47 | vector signed int sumdiffs; | |
48 | ||
49 | for (i = 0; i < h; i++) { | |
50 | /* Read unaligned pixels into our vectors. The vectors are as follows: | |
51 | * pix1v: pix1[0] - pix1[15] | |
52 | * pix2v: pix2[0] - pix2[15] pix2iv: pix2[1] - pix2[16] */ | |
53 | vector unsigned char pix1v = vec_ld(0, pix1); | |
54 | vector unsigned char pix2l = vec_ld(0, pix2); | |
55 | vector unsigned char pix2r = vec_ld(16, pix2); | |
56 | vector unsigned char pix2v = vec_perm(pix2l, pix2r, perm1); | |
57 | vector unsigned char pix2iv = vec_perm(pix2l, pix2r, perm2); | |
58 | ||
59 | /* Calculate the average vector. */ | |
60 | vector unsigned char avgv = vec_avg(pix2v, pix2iv); | |
61 | ||
62 | /* Calculate a sum of abs differences vector. */ | |
63 | vector unsigned char t5 = vec_sub(vec_max(pix1v, avgv), | |
64 | vec_min(pix1v, avgv)); | |
65 | ||
66 | /* Add each 4 pixel group together and put 4 results into sad. */ | |
67 | sad = vec_sum4s(t5, sad); | |
68 | ||
69 | pix1 += line_size; | |
70 | pix2 += line_size; | |
71 | } | |
72 | /* Sum up the four partial sums, and put the result into s. */ | |
73 | sumdiffs = vec_sums((vector signed int) sad, (vector signed int) zero); | |
74 | sumdiffs = vec_splat(sumdiffs, 3); | |
75 | vec_ste(sumdiffs, 0, &s); | |
76 | ||
77 | return s; | |
78 | } | |
79 | ||
80 | static int sad16_y2_altivec(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2, | |
81 | int line_size, int h) | |
82 | { | |
83 | int i, s = 0; | |
84 | const vector unsigned char zero = | |
85 | (const vector unsigned char) vec_splat_u8(0); | |
86 | vector unsigned char perm = vec_lvsl(0, pix2); | |
87 | vector unsigned char pix1v, pix3v, avgv, t5; | |
88 | vector unsigned int sad = (vector unsigned int) vec_splat_u32(0); | |
89 | vector signed int sumdiffs; | |
90 | uint8_t *pix3 = pix2 + line_size; | |
91 | ||
92 | /* Due to the fact that pix3 = pix2 + line_size, the pix3 of one | |
93 | * iteration becomes pix2 in the next iteration. We can use this | |
94 | * fact to avoid a potentially expensive unaligned read, each | |
95 | * time around the loop. | |
96 | * Read unaligned pixels into our vectors. The vectors are as follows: | |
97 | * pix2v: pix2[0] - pix2[15] | |
98 | * Split the pixel vectors into shorts. */ | |
99 | vector unsigned char pix2l = vec_ld(0, pix2); | |
100 | vector unsigned char pix2r = vec_ld(15, pix2); | |
101 | vector unsigned char pix2v = vec_perm(pix2l, pix2r, perm); | |
102 | ||
103 | for (i = 0; i < h; i++) { | |
104 | /* Read unaligned pixels into our vectors. The vectors are as follows: | |
105 | * pix1v: pix1[0] - pix1[15] | |
106 | * pix3v: pix3[0] - pix3[15] */ | |
107 | pix1v = vec_ld(0, pix1); | |
108 | ||
109 | pix2l = vec_ld(0, pix3); | |
110 | pix2r = vec_ld(15, pix3); | |
111 | pix3v = vec_perm(pix2l, pix2r, perm); | |
112 | ||
113 | /* Calculate the average vector. */ | |
114 | avgv = vec_avg(pix2v, pix3v); | |
115 | ||
116 | /* Calculate a sum of abs differences vector. */ | |
117 | t5 = vec_sub(vec_max(pix1v, avgv), vec_min(pix1v, avgv)); | |
118 | ||
119 | /* Add each 4 pixel group together and put 4 results into sad. */ | |
120 | sad = vec_sum4s(t5, sad); | |
121 | ||
122 | pix1 += line_size; | |
123 | pix2v = pix3v; | |
124 | pix3 += line_size; | |
125 | } | |
126 | ||
127 | /* Sum up the four partial sums, and put the result into s. */ | |
128 | sumdiffs = vec_sums((vector signed int) sad, (vector signed int) zero); | |
129 | sumdiffs = vec_splat(sumdiffs, 3); | |
130 | vec_ste(sumdiffs, 0, &s); | |
131 | return s; | |
132 | } | |
133 | ||
134 | static int sad16_xy2_altivec(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2, | |
135 | int line_size, int h) | |
136 | { | |
137 | int i, s = 0; | |
138 | uint8_t *pix3 = pix2 + line_size; | |
139 | const vector unsigned char zero = | |
140 | (const vector unsigned char) vec_splat_u8(0); | |
141 | const vector unsigned short two = | |
142 | (const vector unsigned short) vec_splat_u16(2); | |
143 | vector unsigned char avgv, t5; | |
144 | vector unsigned char perm1 = vec_lvsl(0, pix2); | |
145 | vector unsigned char perm2 = vec_add(perm1, vec_splat_u8(1)); | |
146 | vector unsigned char pix1v, pix3v, pix3iv; | |
147 | vector unsigned short pix3lv, pix3hv, pix3ilv, pix3ihv; | |
148 | vector unsigned short avghv, avglv; | |
149 | vector unsigned int sad = (vector unsigned int) vec_splat_u32(0); | |
150 | vector signed int sumdiffs; | |
151 | ||
152 | /* Due to the fact that pix3 = pix2 + line_size, the pix3 of one | |
153 | * iteration becomes pix2 in the next iteration. We can use this | |
154 | * fact to avoid a potentially expensive unaligned read, as well | |
155 | * as some splitting, and vector addition each time around the loop. | |
156 | * Read unaligned pixels into our vectors. The vectors are as follows: | |
157 | * pix2v: pix2[0] - pix2[15] pix2iv: pix2[1] - pix2[16] | |
158 | * Split the pixel vectors into shorts. */ | |
159 | vector unsigned char pix2l = vec_ld(0, pix2); | |
160 | vector unsigned char pix2r = vec_ld(16, pix2); | |
161 | vector unsigned char pix2v = vec_perm(pix2l, pix2r, perm1); | |
162 | vector unsigned char pix2iv = vec_perm(pix2l, pix2r, perm2); | |
163 | ||
164 | vector unsigned short pix2hv = | |
165 | (vector unsigned short) vec_mergeh(zero, pix2v); | |
166 | vector unsigned short pix2lv = | |
167 | (vector unsigned short) vec_mergel(zero, pix2v); | |
168 | vector unsigned short pix2ihv = | |
169 | (vector unsigned short) vec_mergeh(zero, pix2iv); | |
170 | vector unsigned short pix2ilv = | |
171 | (vector unsigned short) vec_mergel(zero, pix2iv); | |
172 | vector unsigned short t1 = vec_add(pix2hv, pix2ihv); | |
173 | vector unsigned short t2 = vec_add(pix2lv, pix2ilv); | |
174 | vector unsigned short t3, t4; | |
175 | ||
176 | for (i = 0; i < h; i++) { | |
177 | /* Read unaligned pixels into our vectors. The vectors are as follows: | |
178 | * pix1v: pix1[0] - pix1[15] | |
179 | * pix3v: pix3[0] - pix3[15] pix3iv: pix3[1] - pix3[16] */ | |
180 | pix1v = vec_ld(0, pix1); | |
181 | ||
182 | pix2l = vec_ld(0, pix3); | |
183 | pix2r = vec_ld(16, pix3); | |
184 | pix3v = vec_perm(pix2l, pix2r, perm1); | |
185 | pix3iv = vec_perm(pix2l, pix2r, perm2); | |
186 | ||
187 | /* Note that AltiVec does have vec_avg, but this works on vector pairs | |
188 | * and rounds up. We could do avg(avg(a, b), avg(c, d)), but the | |
189 | * rounding would mean that, for example, avg(3, 0, 0, 1) = 2, when | |
190 | * it should be 1. Instead, we have to split the pixel vectors into | |
191 | * vectors of shorts and do the averaging by hand. */ | |
192 | ||
193 | /* Split the pixel vectors into shorts. */ | |
194 | pix3hv = (vector unsigned short) vec_mergeh(zero, pix3v); | |
195 | pix3lv = (vector unsigned short) vec_mergel(zero, pix3v); | |
196 | pix3ihv = (vector unsigned short) vec_mergeh(zero, pix3iv); | |
197 | pix3ilv = (vector unsigned short) vec_mergel(zero, pix3iv); | |
198 | ||
199 | /* Do the averaging on them. */ | |
200 | t3 = vec_add(pix3hv, pix3ihv); | |
201 | t4 = vec_add(pix3lv, pix3ilv); | |
202 | ||
203 | avghv = vec_sr(vec_add(vec_add(t1, t3), two), two); | |
204 | avglv = vec_sr(vec_add(vec_add(t2, t4), two), two); | |
205 | ||
206 | /* Pack the shorts back into a result. */ | |
207 | avgv = vec_pack(avghv, avglv); | |
208 | ||
209 | /* Calculate a sum of abs differences vector. */ | |
210 | t5 = vec_sub(vec_max(pix1v, avgv), vec_min(pix1v, avgv)); | |
211 | ||
212 | /* Add each 4 pixel group together and put 4 results into sad. */ | |
213 | sad = vec_sum4s(t5, sad); | |
214 | ||
215 | pix1 += line_size; | |
216 | pix3 += line_size; | |
217 | /* Transfer the calculated values for pix3 into pix2. */ | |
218 | t1 = t3; | |
219 | t2 = t4; | |
220 | } | |
221 | /* Sum up the four partial sums, and put the result into s. */ | |
222 | sumdiffs = vec_sums((vector signed int) sad, (vector signed int) zero); | |
223 | sumdiffs = vec_splat(sumdiffs, 3); | |
224 | vec_ste(sumdiffs, 0, &s); | |
225 | ||
226 | return s; | |
227 | } | |
228 | ||
229 | static int sad16_altivec(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2, | |
230 | int line_size, int h) | |
231 | { | |
232 | int i, s; | |
233 | const vector unsigned int zero = | |
234 | (const vector unsigned int) vec_splat_u32(0); | |
235 | vector unsigned char perm = vec_lvsl(0, pix2); | |
236 | vector unsigned int sad = (vector unsigned int) vec_splat_u32(0); | |
237 | vector signed int sumdiffs; | |
238 | ||
239 | for (i = 0; i < h; i++) { | |
240 | /* Read potentially unaligned pixels into t1 and t2. */ | |
241 | vector unsigned char pix2l = vec_ld(0, pix2); | |
242 | vector unsigned char pix2r = vec_ld(15, pix2); | |
243 | vector unsigned char t1 = vec_ld(0, pix1); | |
244 | vector unsigned char t2 = vec_perm(pix2l, pix2r, perm); | |
245 | ||
246 | /* Calculate a sum of abs differences vector. */ | |
247 | vector unsigned char t3 = vec_max(t1, t2); | |
248 | vector unsigned char t4 = vec_min(t1, t2); | |
249 | vector unsigned char t5 = vec_sub(t3, t4); | |
250 | ||
251 | /* Add each 4 pixel group together and put 4 results into sad. */ | |
252 | sad = vec_sum4s(t5, sad); | |
253 | ||
254 | pix1 += line_size; | |
255 | pix2 += line_size; | |
256 | } | |
257 | ||
258 | /* Sum up the four partial sums, and put the result into s. */ | |
259 | sumdiffs = vec_sums((vector signed int) sad, (vector signed int) zero); | |
260 | sumdiffs = vec_splat(sumdiffs, 3); | |
261 | vec_ste(sumdiffs, 0, &s); | |
262 | ||
263 | return s; | |
264 | } | |
265 | ||
266 | static int sad8_altivec(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2, | |
267 | int line_size, int h) | |
268 | { | |
269 | int i, s; | |
270 | const vector unsigned int zero = | |
271 | (const vector unsigned int) vec_splat_u32(0); | |
272 | const vector unsigned char permclear = | |
273 | (vector unsigned char) | |
274 | { 255, 255, 255, 255, 255, 255, 255, 255, 0, 0, 0, 0, 0, 0, 0, 0 }; | |
275 | vector unsigned char perm1 = vec_lvsl(0, pix1); | |
276 | vector unsigned char perm2 = vec_lvsl(0, pix2); | |
277 | vector unsigned int sad = (vector unsigned int) vec_splat_u32(0); | |
278 | vector signed int sumdiffs; | |
279 | ||
280 | for (i = 0; i < h; i++) { | |
281 | /* Read potentially unaligned pixels into t1 and t2. | |
282 | * Since we're reading 16 pixels, and actually only want 8, | |
283 | * mask out the last 8 pixels. The 0s don't change the sum. */ | |
284 | vector unsigned char pix1l = vec_ld(0, pix1); | |
285 | vector unsigned char pix1r = vec_ld(7, pix1); | |
286 | vector unsigned char pix2l = vec_ld(0, pix2); | |
287 | vector unsigned char pix2r = vec_ld(7, pix2); | |
288 | vector unsigned char t1 = vec_and(vec_perm(pix1l, pix1r, perm1), | |
289 | permclear); | |
290 | vector unsigned char t2 = vec_and(vec_perm(pix2l, pix2r, perm2), | |
291 | permclear); | |
292 | ||
293 | /* Calculate a sum of abs differences vector. */ | |
294 | vector unsigned char t3 = vec_max(t1, t2); | |
295 | vector unsigned char t4 = vec_min(t1, t2); | |
296 | vector unsigned char t5 = vec_sub(t3, t4); | |
297 | ||
298 | /* Add each 4 pixel group together and put 4 results into sad. */ | |
299 | sad = vec_sum4s(t5, sad); | |
300 | ||
301 | pix1 += line_size; | |
302 | pix2 += line_size; | |
303 | } | |
304 | ||
305 | /* Sum up the four partial sums, and put the result into s. */ | |
306 | sumdiffs = vec_sums((vector signed int) sad, (vector signed int) zero); | |
307 | sumdiffs = vec_splat(sumdiffs, 3); | |
308 | vec_ste(sumdiffs, 0, &s); | |
309 | ||
310 | return s; | |
311 | } | |
312 | ||
313 | /* Sum of Squared Errors for an 8x8 block, AltiVec-enhanced. | |
314 | * It's the sad8_altivec code above w/ squaring added. */ | |
315 | static int sse8_altivec(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2, | |
316 | int line_size, int h) | |
317 | { | |
318 | int i, s; | |
319 | const vector unsigned int zero = | |
320 | (const vector unsigned int) vec_splat_u32(0); | |
321 | const vector unsigned char permclear = | |
322 | (vector unsigned char) | |
323 | { 255, 255, 255, 255, 255, 255, 255, 255, 0, 0, 0, 0, 0, 0, 0, 0 }; | |
324 | vector unsigned char perm1 = vec_lvsl(0, pix1); | |
325 | vector unsigned char perm2 = vec_lvsl(0, pix2); | |
326 | vector unsigned int sum = (vector unsigned int) vec_splat_u32(0); | |
327 | vector signed int sumsqr; | |
328 | ||
329 | for (i = 0; i < h; i++) { | |
330 | /* Read potentially unaligned pixels into t1 and t2. | |
331 | * Since we're reading 16 pixels, and actually only want 8, | |
332 | * mask out the last 8 pixels. The 0s don't change the sum. */ | |
333 | vector unsigned char pix1l = vec_ld(0, pix1); | |
334 | vector unsigned char pix1r = vec_ld(7, pix1); | |
335 | vector unsigned char pix2l = vec_ld(0, pix2); | |
336 | vector unsigned char pix2r = vec_ld(7, pix2); | |
337 | vector unsigned char t1 = vec_and(vec_perm(pix1l, pix1r, perm1), | |
338 | permclear); | |
339 | vector unsigned char t2 = vec_and(vec_perm(pix2l, pix2r, perm2), | |
340 | permclear); | |
341 | ||
342 | /* Since we want to use unsigned chars, we can take advantage | |
343 | * of the fact that abs(a - b) ^ 2 = (a - b) ^ 2. */ | |
344 | ||
345 | /* Calculate abs differences vector. */ | |
346 | vector unsigned char t3 = vec_max(t1, t2); | |
347 | vector unsigned char t4 = vec_min(t1, t2); | |
348 | vector unsigned char t5 = vec_sub(t3, t4); | |
349 | ||
350 | /* Square the values and add them to our sum. */ | |
351 | sum = vec_msum(t5, t5, sum); | |
352 | ||
353 | pix1 += line_size; | |
354 | pix2 += line_size; | |
355 | } | |
356 | ||
357 | /* Sum up the four partial sums, and put the result into s. */ | |
358 | sumsqr = vec_sums((vector signed int) sum, (vector signed int) zero); | |
359 | sumsqr = vec_splat(sumsqr, 3); | |
360 | vec_ste(sumsqr, 0, &s); | |
361 | ||
362 | return s; | |
363 | } | |
364 | ||
365 | /* Sum of Squared Errors for a 16x16 block, AltiVec-enhanced. | |
366 | * It's the sad16_altivec code above w/ squaring added. */ | |
367 | static int sse16_altivec(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2, | |
368 | int line_size, int h) | |
369 | { | |
370 | int i, s; | |
371 | const vector unsigned int zero = | |
372 | (const vector unsigned int) vec_splat_u32(0); | |
373 | vector unsigned char perm = vec_lvsl(0, pix2); | |
374 | vector unsigned int sum = (vector unsigned int) vec_splat_u32(0); | |
375 | vector signed int sumsqr; | |
376 | ||
377 | for (i = 0; i < h; i++) { | |
378 | /* Read potentially unaligned pixels into t1 and t2. */ | |
379 | vector unsigned char pix2l = vec_ld(0, pix2); | |
380 | vector unsigned char pix2r = vec_ld(15, pix2); | |
381 | vector unsigned char t1 = vec_ld(0, pix1); | |
382 | vector unsigned char t2 = vec_perm(pix2l, pix2r, perm); | |
383 | ||
384 | /* Since we want to use unsigned chars, we can take advantage | |
385 | * of the fact that abs(a - b) ^ 2 = (a - b) ^ 2. */ | |
386 | ||
387 | /* Calculate abs differences vector. */ | |
388 | vector unsigned char t3 = vec_max(t1, t2); | |
389 | vector unsigned char t4 = vec_min(t1, t2); | |
390 | vector unsigned char t5 = vec_sub(t3, t4); | |
391 | ||
392 | /* Square the values and add them to our sum. */ | |
393 | sum = vec_msum(t5, t5, sum); | |
394 | ||
395 | pix1 += line_size; | |
396 | pix2 += line_size; | |
397 | } | |
398 | ||
399 | /* Sum up the four partial sums, and put the result into s. */ | |
400 | sumsqr = vec_sums((vector signed int) sum, (vector signed int) zero); | |
401 | sumsqr = vec_splat(sumsqr, 3); | |
402 | vec_ste(sumsqr, 0, &s); | |
403 | ||
404 | return s; | |
405 | } | |
406 | ||
407 | static int hadamard8_diff8x8_altivec(MpegEncContext *s, uint8_t *dst, | |
408 | uint8_t *src, int stride, int h) | |
409 | { | |
410 | int sum; | |
411 | register const vector unsigned char vzero = | |
412 | (const vector unsigned char) vec_splat_u8(0); | |
413 | register vector signed short temp0, temp1, temp2, temp3, temp4, | |
414 | temp5, temp6, temp7; | |
415 | { | |
416 | register const vector signed short vprod1 = | |
417 | (const vector signed short) { 1, -1, 1, -1, 1, -1, 1, -1 }; | |
418 | register const vector signed short vprod2 = | |
419 | (const vector signed short) { 1, 1, -1, -1, 1, 1, -1, -1 }; | |
420 | register const vector signed short vprod3 = | |
421 | (const vector signed short) { 1, 1, 1, 1, -1, -1, -1, -1 }; | |
422 | register const vector unsigned char perm1 = | |
423 | (const vector unsigned char) | |
424 | { 0x02, 0x03, 0x00, 0x01, 0x06, 0x07, 0x04, 0x05, | |
425 | 0x0A, 0x0B, 0x08, 0x09, 0x0E, 0x0F, 0x0C, 0x0D }; | |
426 | register const vector unsigned char perm2 = | |
427 | (const vector unsigned char) | |
428 | { 0x04, 0x05, 0x06, 0x07, 0x00, 0x01, 0x02, 0x03, | |
429 | 0x0C, 0x0D, 0x0E, 0x0F, 0x08, 0x09, 0x0A, 0x0B }; | |
430 | register const vector unsigned char perm3 = | |
431 | (const vector unsigned char) | |
432 | { 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, | |
433 | 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07 }; | |
434 | ||
435 | #define ONEITERBUTTERFLY(i, res) \ | |
436 | { \ | |
437 | register vector unsigned char src1 = vec_ld(stride * i, src); \ | |
438 | register vector unsigned char src2 = vec_ld(stride * i + 15, src); \ | |
439 | register vector unsigned char srcO = \ | |
440 | vec_perm(src1, src2, vec_lvsl(stride * i, src)); \ | |
441 | register vector unsigned char dst1 = vec_ld(stride * i, dst); \ | |
442 | register vector unsigned char dst2 = vec_ld(stride * i + 15, dst); \ | |
443 | register vector unsigned char dstO = \ | |
444 | vec_perm(dst1, dst2, vec_lvsl(stride * i, dst)); \ | |
445 | \ | |
446 | /* Promote the unsigned chars to signed shorts. */ \ | |
447 | /* We're in the 8x8 function, we only care for the first 8. */ \ | |
448 | register vector signed short srcV = \ | |
449 | (vector signed short) vec_mergeh((vector signed char) vzero, \ | |
450 | (vector signed char) srcO); \ | |
451 | register vector signed short dstV = \ | |
452 | (vector signed short) vec_mergeh((vector signed char) vzero, \ | |
453 | (vector signed char) dstO); \ | |
454 | \ | |
455 | /* subtractions inside the first butterfly */ \ | |
456 | register vector signed short but0 = vec_sub(srcV, dstV); \ | |
457 | register vector signed short op1 = vec_perm(but0, but0, perm1); \ | |
458 | register vector signed short but1 = vec_mladd(but0, vprod1, op1); \ | |
459 | register vector signed short op2 = vec_perm(but1, but1, perm2); \ | |
460 | register vector signed short but2 = vec_mladd(but1, vprod2, op2); \ | |
461 | register vector signed short op3 = vec_perm(but2, but2, perm3); \ | |
462 | res = vec_mladd(but2, vprod3, op3); \ | |
463 | } | |
464 | ONEITERBUTTERFLY(0, temp0); | |
465 | ONEITERBUTTERFLY(1, temp1); | |
466 | ONEITERBUTTERFLY(2, temp2); | |
467 | ONEITERBUTTERFLY(3, temp3); | |
468 | ONEITERBUTTERFLY(4, temp4); | |
469 | ONEITERBUTTERFLY(5, temp5); | |
470 | ONEITERBUTTERFLY(6, temp6); | |
471 | ONEITERBUTTERFLY(7, temp7); | |
472 | } | |
473 | #undef ONEITERBUTTERFLY | |
474 | { | |
475 | register vector signed int vsum; | |
476 | register vector signed short line0 = vec_add(temp0, temp1); | |
477 | register vector signed short line1 = vec_sub(temp0, temp1); | |
478 | register vector signed short line2 = vec_add(temp2, temp3); | |
479 | register vector signed short line3 = vec_sub(temp2, temp3); | |
480 | register vector signed short line4 = vec_add(temp4, temp5); | |
481 | register vector signed short line5 = vec_sub(temp4, temp5); | |
482 | register vector signed short line6 = vec_add(temp6, temp7); | |
483 | register vector signed short line7 = vec_sub(temp6, temp7); | |
484 | ||
485 | register vector signed short line0B = vec_add(line0, line2); | |
486 | register vector signed short line2B = vec_sub(line0, line2); | |
487 | register vector signed short line1B = vec_add(line1, line3); | |
488 | register vector signed short line3B = vec_sub(line1, line3); | |
489 | register vector signed short line4B = vec_add(line4, line6); | |
490 | register vector signed short line6B = vec_sub(line4, line6); | |
491 | register vector signed short line5B = vec_add(line5, line7); | |
492 | register vector signed short line7B = vec_sub(line5, line7); | |
493 | ||
494 | register vector signed short line0C = vec_add(line0B, line4B); | |
495 | register vector signed short line4C = vec_sub(line0B, line4B); | |
496 | register vector signed short line1C = vec_add(line1B, line5B); | |
497 | register vector signed short line5C = vec_sub(line1B, line5B); | |
498 | register vector signed short line2C = vec_add(line2B, line6B); | |
499 | register vector signed short line6C = vec_sub(line2B, line6B); | |
500 | register vector signed short line3C = vec_add(line3B, line7B); | |
501 | register vector signed short line7C = vec_sub(line3B, line7B); | |
502 | ||
503 | vsum = vec_sum4s(vec_abs(line0C), vec_splat_s32(0)); | |
504 | vsum = vec_sum4s(vec_abs(line1C), vsum); | |
505 | vsum = vec_sum4s(vec_abs(line2C), vsum); | |
506 | vsum = vec_sum4s(vec_abs(line3C), vsum); | |
507 | vsum = vec_sum4s(vec_abs(line4C), vsum); | |
508 | vsum = vec_sum4s(vec_abs(line5C), vsum); | |
509 | vsum = vec_sum4s(vec_abs(line6C), vsum); | |
510 | vsum = vec_sum4s(vec_abs(line7C), vsum); | |
511 | vsum = vec_sums(vsum, (vector signed int) vzero); | |
512 | vsum = vec_splat(vsum, 3); | |
513 | vec_ste(vsum, 0, &sum); | |
514 | } | |
515 | return sum; | |
516 | } | |
517 | ||
518 | /* | |
519 | * 16x8 works with 16 elements; it allows to avoid replicating loads, and | |
520 | * gives the compiler more room for scheduling. It's only used from | |
521 | * inside hadamard8_diff16_altivec. | |
522 | * | |
523 | * Unfortunately, it seems gcc-3.3 is a bit dumb, and the compiled code has | |
524 | * a LOT of spill code, it seems gcc (unlike xlc) cannot keep everything in | |
525 | * registers by itself. The following code includes hand-made register | |
526 | * allocation. It's not clean, but on a 7450 the resulting code is much faster | |
527 | * (best case falls from 700+ cycles to 550). | |
528 | * | |
529 | * xlc doesn't add spill code, but it doesn't know how to schedule for the | |
530 | * 7450, and its code isn't much faster than gcc-3.3 on the 7450 (but uses | |
531 | * 25% fewer instructions...) | |
532 | * | |
533 | * On the 970, the hand-made RA is still a win (around 690 vs. around 780), | |
534 | * but xlc goes to around 660 on the regular C code... | |
535 | */ | |
536 | static int hadamard8_diff16x8_altivec(MpegEncContext *s, uint8_t *dst, | |
537 | uint8_t *src, int stride, int h) | |
538 | { | |
539 | int sum; | |
540 | register vector signed short | |
541 | temp0 __asm__ ("v0"), | |
542 | temp1 __asm__ ("v1"), | |
543 | temp2 __asm__ ("v2"), | |
544 | temp3 __asm__ ("v3"), | |
545 | temp4 __asm__ ("v4"), | |
546 | temp5 __asm__ ("v5"), | |
547 | temp6 __asm__ ("v6"), | |
548 | temp7 __asm__ ("v7"); | |
549 | register vector signed short | |
550 | temp0S __asm__ ("v8"), | |
551 | temp1S __asm__ ("v9"), | |
552 | temp2S __asm__ ("v10"), | |
553 | temp3S __asm__ ("v11"), | |
554 | temp4S __asm__ ("v12"), | |
555 | temp5S __asm__ ("v13"), | |
556 | temp6S __asm__ ("v14"), | |
557 | temp7S __asm__ ("v15"); | |
558 | register const vector unsigned char vzero __asm__ ("v31") = | |
559 | (const vector unsigned char) vec_splat_u8(0); | |
560 | { | |
561 | register const vector signed short vprod1 __asm__ ("v16") = | |
562 | (const vector signed short) { 1, -1, 1, -1, 1, -1, 1, -1 }; | |
563 | ||
564 | register const vector signed short vprod2 __asm__ ("v17") = | |
565 | (const vector signed short) { 1, 1, -1, -1, 1, 1, -1, -1 }; | |
566 | ||
567 | register const vector signed short vprod3 __asm__ ("v18") = | |
568 | (const vector signed short) { 1, 1, 1, 1, -1, -1, -1, -1 }; | |
569 | ||
570 | register const vector unsigned char perm1 __asm__ ("v19") = | |
571 | (const vector unsigned char) | |
572 | { 0x02, 0x03, 0x00, 0x01, 0x06, 0x07, 0x04, 0x05, | |
573 | 0x0A, 0x0B, 0x08, 0x09, 0x0E, 0x0F, 0x0C, 0x0D }; | |
574 | ||
575 | register const vector unsigned char perm2 __asm__ ("v20") = | |
576 | (const vector unsigned char) | |
577 | { 0x04, 0x05, 0x06, 0x07, 0x00, 0x01, 0x02, 0x03, | |
578 | 0x0C, 0x0D, 0x0E, 0x0F, 0x08, 0x09, 0x0A, 0x0B }; | |
579 | ||
580 | register const vector unsigned char perm3 __asm__ ("v21") = | |
581 | (const vector unsigned char) | |
582 | { 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, | |
583 | 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07 }; | |
584 | ||
585 | #define ONEITERBUTTERFLY(i, res1, res2) \ | |
586 | { \ | |
587 | register vector unsigned char src1 __asm__ ("v22") = \ | |
588 | vec_ld(stride * i, src); \ | |
589 | register vector unsigned char src2 __asm__ ("v23") = \ | |
590 | vec_ld(stride * i + 16, src); \ | |
591 | register vector unsigned char srcO __asm__ ("v22") = \ | |
592 | vec_perm(src1, src2, vec_lvsl(stride * i, src)); \ | |
593 | register vector unsigned char dst1 __asm__ ("v24") = \ | |
594 | vec_ld(stride * i, dst); \ | |
595 | register vector unsigned char dst2 __asm__ ("v25") = \ | |
596 | vec_ld(stride * i + 16, dst); \ | |
597 | register vector unsigned char dstO __asm__ ("v23") = \ | |
598 | vec_perm(dst1, dst2, vec_lvsl(stride * i, dst)); \ | |
599 | \ | |
600 | /* Promote the unsigned chars to signed shorts. */ \ | |
601 | register vector signed short srcV __asm__ ("v24") = \ | |
602 | (vector signed short) vec_mergeh((vector signed char) vzero, \ | |
603 | (vector signed char) srcO); \ | |
604 | register vector signed short dstV __asm__ ("v25") = \ | |
605 | (vector signed short) vec_mergeh((vector signed char) vzero, \ | |
606 | (vector signed char) dstO); \ | |
607 | register vector signed short srcW __asm__ ("v26") = \ | |
608 | (vector signed short) vec_mergel((vector signed char) vzero, \ | |
609 | (vector signed char) srcO); \ | |
610 | register vector signed short dstW __asm__ ("v27") = \ | |
611 | (vector signed short) vec_mergel((vector signed char) vzero, \ | |
612 | (vector signed char) dstO); \ | |
613 | \ | |
614 | /* subtractions inside the first butterfly */ \ | |
615 | register vector signed short but0 __asm__ ("v28") = \ | |
616 | vec_sub(srcV, dstV); \ | |
617 | register vector signed short but0S __asm__ ("v29") = \ | |
618 | vec_sub(srcW, dstW); \ | |
619 | register vector signed short op1 __asm__ ("v30") = \ | |
620 | vec_perm(but0, but0, perm1); \ | |
621 | register vector signed short but1 __asm__ ("v22") = \ | |
622 | vec_mladd(but0, vprod1, op1); \ | |
623 | register vector signed short op1S __asm__ ("v23") = \ | |
624 | vec_perm(but0S, but0S, perm1); \ | |
625 | register vector signed short but1S __asm__ ("v24") = \ | |
626 | vec_mladd(but0S, vprod1, op1S); \ | |
627 | register vector signed short op2 __asm__ ("v25") = \ | |
628 | vec_perm(but1, but1, perm2); \ | |
629 | register vector signed short but2 __asm__ ("v26") = \ | |
630 | vec_mladd(but1, vprod2, op2); \ | |
631 | register vector signed short op2S __asm__ ("v27") = \ | |
632 | vec_perm(but1S, but1S, perm2); \ | |
633 | register vector signed short but2S __asm__ ("v28") = \ | |
634 | vec_mladd(but1S, vprod2, op2S); \ | |
635 | register vector signed short op3 __asm__ ("v29") = \ | |
636 | vec_perm(but2, but2, perm3); \ | |
637 | register vector signed short op3S __asm__ ("v30") = \ | |
638 | vec_perm(but2S, but2S, perm3); \ | |
639 | res1 = vec_mladd(but2, vprod3, op3); \ | |
640 | res2 = vec_mladd(but2S, vprod3, op3S); \ | |
641 | } | |
642 | ONEITERBUTTERFLY(0, temp0, temp0S); | |
643 | ONEITERBUTTERFLY(1, temp1, temp1S); | |
644 | ONEITERBUTTERFLY(2, temp2, temp2S); | |
645 | ONEITERBUTTERFLY(3, temp3, temp3S); | |
646 | ONEITERBUTTERFLY(4, temp4, temp4S); | |
647 | ONEITERBUTTERFLY(5, temp5, temp5S); | |
648 | ONEITERBUTTERFLY(6, temp6, temp6S); | |
649 | ONEITERBUTTERFLY(7, temp7, temp7S); | |
650 | } | |
651 | #undef ONEITERBUTTERFLY | |
652 | { | |
653 | register vector signed int vsum; | |
654 | ||
655 | register vector signed short line0 = vec_add(temp0, temp1); | |
656 | register vector signed short line1 = vec_sub(temp0, temp1); | |
657 | register vector signed short line2 = vec_add(temp2, temp3); | |
658 | register vector signed short line3 = vec_sub(temp2, temp3); | |
659 | register vector signed short line4 = vec_add(temp4, temp5); | |
660 | register vector signed short line5 = vec_sub(temp4, temp5); | |
661 | register vector signed short line6 = vec_add(temp6, temp7); | |
662 | register vector signed short line7 = vec_sub(temp6, temp7); | |
663 | ||
664 | register vector signed short line0B = vec_add(line0, line2); | |
665 | register vector signed short line2B = vec_sub(line0, line2); | |
666 | register vector signed short line1B = vec_add(line1, line3); | |
667 | register vector signed short line3B = vec_sub(line1, line3); | |
668 | register vector signed short line4B = vec_add(line4, line6); | |
669 | register vector signed short line6B = vec_sub(line4, line6); | |
670 | register vector signed short line5B = vec_add(line5, line7); | |
671 | register vector signed short line7B = vec_sub(line5, line7); | |
672 | ||
673 | register vector signed short line0C = vec_add(line0B, line4B); | |
674 | register vector signed short line4C = vec_sub(line0B, line4B); | |
675 | register vector signed short line1C = vec_add(line1B, line5B); | |
676 | register vector signed short line5C = vec_sub(line1B, line5B); | |
677 | register vector signed short line2C = vec_add(line2B, line6B); | |
678 | register vector signed short line6C = vec_sub(line2B, line6B); | |
679 | register vector signed short line3C = vec_add(line3B, line7B); | |
680 | register vector signed short line7C = vec_sub(line3B, line7B); | |
681 | ||
682 | register vector signed short line0S = vec_add(temp0S, temp1S); | |
683 | register vector signed short line1S = vec_sub(temp0S, temp1S); | |
684 | register vector signed short line2S = vec_add(temp2S, temp3S); | |
685 | register vector signed short line3S = vec_sub(temp2S, temp3S); | |
686 | register vector signed short line4S = vec_add(temp4S, temp5S); | |
687 | register vector signed short line5S = vec_sub(temp4S, temp5S); | |
688 | register vector signed short line6S = vec_add(temp6S, temp7S); | |
689 | register vector signed short line7S = vec_sub(temp6S, temp7S); | |
690 | ||
691 | register vector signed short line0BS = vec_add(line0S, line2S); | |
692 | register vector signed short line2BS = vec_sub(line0S, line2S); | |
693 | register vector signed short line1BS = vec_add(line1S, line3S); | |
694 | register vector signed short line3BS = vec_sub(line1S, line3S); | |
695 | register vector signed short line4BS = vec_add(line4S, line6S); | |
696 | register vector signed short line6BS = vec_sub(line4S, line6S); | |
697 | register vector signed short line5BS = vec_add(line5S, line7S); | |
698 | register vector signed short line7BS = vec_sub(line5S, line7S); | |
699 | ||
700 | register vector signed short line0CS = vec_add(line0BS, line4BS); | |
701 | register vector signed short line4CS = vec_sub(line0BS, line4BS); | |
702 | register vector signed short line1CS = vec_add(line1BS, line5BS); | |
703 | register vector signed short line5CS = vec_sub(line1BS, line5BS); | |
704 | register vector signed short line2CS = vec_add(line2BS, line6BS); | |
705 | register vector signed short line6CS = vec_sub(line2BS, line6BS); | |
706 | register vector signed short line3CS = vec_add(line3BS, line7BS); | |
707 | register vector signed short line7CS = vec_sub(line3BS, line7BS); | |
708 | ||
709 | vsum = vec_sum4s(vec_abs(line0C), vec_splat_s32(0)); | |
710 | vsum = vec_sum4s(vec_abs(line1C), vsum); | |
711 | vsum = vec_sum4s(vec_abs(line2C), vsum); | |
712 | vsum = vec_sum4s(vec_abs(line3C), vsum); | |
713 | vsum = vec_sum4s(vec_abs(line4C), vsum); | |
714 | vsum = vec_sum4s(vec_abs(line5C), vsum); | |
715 | vsum = vec_sum4s(vec_abs(line6C), vsum); | |
716 | vsum = vec_sum4s(vec_abs(line7C), vsum); | |
717 | ||
718 | vsum = vec_sum4s(vec_abs(line0CS), vsum); | |
719 | vsum = vec_sum4s(vec_abs(line1CS), vsum); | |
720 | vsum = vec_sum4s(vec_abs(line2CS), vsum); | |
721 | vsum = vec_sum4s(vec_abs(line3CS), vsum); | |
722 | vsum = vec_sum4s(vec_abs(line4CS), vsum); | |
723 | vsum = vec_sum4s(vec_abs(line5CS), vsum); | |
724 | vsum = vec_sum4s(vec_abs(line6CS), vsum); | |
725 | vsum = vec_sum4s(vec_abs(line7CS), vsum); | |
726 | vsum = vec_sums(vsum, (vector signed int) vzero); | |
727 | vsum = vec_splat(vsum, 3); | |
728 | vec_ste(vsum, 0, &sum); | |
729 | } | |
730 | return sum; | |
731 | } | |
732 | ||
733 | static int hadamard8_diff16_altivec(MpegEncContext *s, uint8_t *dst, | |
734 | uint8_t *src, int stride, int h) | |
735 | { | |
736 | int score = hadamard8_diff16x8_altivec(s, dst, src, stride, 8); | |
737 | ||
738 | if (h == 16) { | |
739 | dst += 8 * stride; | |
740 | src += 8 * stride; | |
741 | score += hadamard8_diff16x8_altivec(s, dst, src, stride, 8); | |
742 | } | |
743 | return score; | |
744 | } | |
745 | #endif /* HAVE_ALTIVEC */ | |
746 | ||
747 | av_cold void ff_me_cmp_init_ppc(MECmpContext *c, AVCodecContext *avctx) | |
748 | { | |
749 | #if HAVE_ALTIVEC | |
750 | if (!PPC_ALTIVEC(av_get_cpu_flags())) | |
751 | return; | |
752 | ||
753 | c->pix_abs[0][1] = sad16_x2_altivec; | |
754 | c->pix_abs[0][2] = sad16_y2_altivec; | |
755 | c->pix_abs[0][3] = sad16_xy2_altivec; | |
756 | c->pix_abs[0][0] = sad16_altivec; | |
757 | c->pix_abs[1][0] = sad8_altivec; | |
758 | ||
759 | c->sad[0] = sad16_altivec; | |
760 | c->sad[1] = sad8_altivec; | |
761 | c->sse[0] = sse16_altivec; | |
762 | c->sse[1] = sse8_altivec; | |
763 | ||
764 | c->hadamard8_diff[0] = hadamard8_diff16_altivec; | |
765 | c->hadamard8_diff[1] = hadamard8_diff8x8_altivec; | |
766 | #endif /* HAVE_ALTIVEC */ | |
767 | } |