38a7ba147686f2ff16c861c5a77061f55268ff20
[deb_ffmpeg.git] / me_cmp.c
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
39 #if HAVE_BIGENDIAN
40 #define GET_PERM(per1, per2, pix) {\
41 per1 = vec_lvsl(0, pix);\
42 per2 = vec_add(per1, vec_splat_u8(1));\
43 }
44 #define LOAD_PIX(v, iv, pix, per1, per2) {\
45 vector unsigned char pix2l = vec_ld(0, pix);\
46 vector unsigned char pix2r = vec_ld(16, pix);\
47 v = vec_perm(pix2l, pix2r, per1);\
48 iv = vec_perm(pix2l, pix2r, per2);\
49 }
50 #else
51 #define GET_PERM(per1, per2, pix) {}
52 #define LOAD_PIX(v, iv, pix, per1, per2) {\
53 v = vec_vsx_ld(0, pix);\
54 iv = vec_vsx_ld(1, pix);\
55 }
56 #endif
57 static int sad16_x2_altivec(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2,
58 ptrdiff_t stride, int h)
59 {
60 int i;
61 int __attribute__((aligned(16))) s = 0;
62 const vector unsigned char zero =
63 (const vector unsigned char) vec_splat_u8(0);
64 vector unsigned int sad = (vector unsigned int) vec_splat_u32(0);
65 vector signed int sumdiffs;
66 vector unsigned char perm1, perm2, pix2v, pix2iv;
67
68 GET_PERM(perm1, perm2, pix2);
69 for (i = 0; i < h; i++) {
70 /* Read unaligned pixels into our vectors. The vectors are as follows:
71 * pix1v: pix1[0] - pix1[15]
72 * pix2v: pix2[0] - pix2[15] pix2iv: pix2[1] - pix2[16] */
73 vector unsigned char pix1v = vec_ld(0, pix1);
74 LOAD_PIX(pix2v, pix2iv, pix2, perm1, perm2);
75
76 /* Calculate the average vector. */
77 vector unsigned char avgv = vec_avg(pix2v, pix2iv);
78
79 /* Calculate a sum of abs differences vector. */
80 vector unsigned char t5 = vec_sub(vec_max(pix1v, avgv),
81 vec_min(pix1v, avgv));
82
83 /* Add each 4 pixel group together and put 4 results into sad. */
84 sad = vec_sum4s(t5, sad);
85
86 pix1 += stride;
87 pix2 += stride;
88 }
89 /* Sum up the four partial sums, and put the result into s. */
90 sumdiffs = vec_sums((vector signed int) sad, (vector signed int) zero);
91 sumdiffs = vec_splat(sumdiffs, 3);
92 vec_ste(sumdiffs, 0, &s);
93
94 return s;
95 }
96
97 static int sad16_y2_altivec(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2,
98 ptrdiff_t stride, int h)
99 {
100 int i;
101 int __attribute__((aligned(16))) s = 0;
102 const vector unsigned char zero =
103 (const vector unsigned char) vec_splat_u8(0);
104 vector unsigned char pix1v, pix3v, avgv, t5;
105 vector unsigned int sad = (vector unsigned int) vec_splat_u32(0);
106 vector signed int sumdiffs;
107
108 uint8_t *pix3 = pix2 + stride;
109
110 /* Due to the fact that pix3 = pix2 + stride, the pix3 of one
111 * iteration becomes pix2 in the next iteration. We can use this
112 * fact to avoid a potentially expensive unaligned read, each
113 * time around the loop.
114 * Read unaligned pixels into our vectors. The vectors are as follows:
115 * pix2v: pix2[0] - pix2[15]
116 * Split the pixel vectors into shorts. */
117 vector unsigned char pix2v = VEC_LD(0, pix2);
118
119 for (i = 0; i < h; i++) {
120 /* Read unaligned pixels into our vectors. The vectors are as follows:
121 * pix1v: pix1[0] - pix1[15]
122 * pix3v: pix3[0] - pix3[15] */
123 pix1v = vec_ld(0, pix1);
124 pix3v = VEC_LD(0, pix3);
125
126 /* Calculate the average vector. */
127 avgv = vec_avg(pix2v, pix3v);
128
129 /* Calculate a sum of abs differences vector. */
130 t5 = vec_sub(vec_max(pix1v, avgv), vec_min(pix1v, avgv));
131
132 /* Add each 4 pixel group together and put 4 results into sad. */
133 sad = vec_sum4s(t5, sad);
134
135 pix1 += stride;
136 pix2v = pix3v;
137 pix3 += stride;
138 }
139
140 /* Sum up the four partial sums, and put the result into s. */
141 sumdiffs = vec_sums((vector signed int) sad, (vector signed int) zero);
142 sumdiffs = vec_splat(sumdiffs, 3);
143 vec_ste(sumdiffs, 0, &s);
144 return s;
145 }
146
147 static int sad16_xy2_altivec(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2,
148 ptrdiff_t stride, int h)
149 {
150 int i;
151 int __attribute__((aligned(16))) s = 0;
152 uint8_t *pix3 = pix2 + stride;
153 const vector unsigned char zero =
154 (const vector unsigned char) vec_splat_u8(0);
155 const vector unsigned short two =
156 (const vector unsigned short) vec_splat_u16(2);
157 vector unsigned char avgv, t5;
158 vector unsigned char pix1v, pix3v, pix3iv;
159 vector unsigned short pix3lv, pix3hv, pix3ilv, pix3ihv;
160 vector unsigned short avghv, avglv;
161 vector unsigned int sad = (vector unsigned int) vec_splat_u32(0);
162 vector signed int sumdiffs;
163 vector unsigned char perm1, perm2, pix2v, pix2iv;
164 GET_PERM(perm1, perm2, pix2);
165
166 /* Due to the fact that pix3 = pix2 + stride, the pix3 of one
167 * iteration becomes pix2 in the next iteration. We can use this
168 * fact to avoid a potentially expensive unaligned read, as well
169 * as some splitting, and vector addition each time around the loop.
170 * Read unaligned pixels into our vectors. The vectors are as follows:
171 * pix2v: pix2[0] - pix2[15] pix2iv: pix2[1] - pix2[16]
172 * Split the pixel vectors into shorts. */
173 LOAD_PIX(pix2v, pix2iv, pix2, perm1, perm2);
174 vector unsigned short pix2hv =
175 (vector unsigned short) VEC_MERGEH(zero, pix2v);
176 vector unsigned short pix2lv =
177 (vector unsigned short) VEC_MERGEL(zero, pix2v);
178 vector unsigned short pix2ihv =
179 (vector unsigned short) VEC_MERGEH(zero, pix2iv);
180 vector unsigned short pix2ilv =
181 (vector unsigned short) VEC_MERGEL(zero, pix2iv);
182
183 vector unsigned short t1 = vec_add(pix2hv, pix2ihv);
184 vector unsigned short t2 = vec_add(pix2lv, pix2ilv);
185 vector unsigned short t3, t4;
186
187 for (i = 0; i < h; i++) {
188 /* Read unaligned pixels into our vectors. The vectors are as follows:
189 * pix1v: pix1[0] - pix1[15]
190 * pix3v: pix3[0] - pix3[15] pix3iv: pix3[1] - pix3[16] */
191 pix1v = vec_ld(0, pix1);
192 LOAD_PIX(pix3v, pix3iv, pix3, perm1, perm2);
193
194 /* Note that AltiVec does have vec_avg, but this works on vector pairs
195 * and rounds up. We could do avg(avg(a, b), avg(c, d)), but the
196 * rounding would mean that, for example, avg(3, 0, 0, 1) = 2, when
197 * it should be 1. Instead, we have to split the pixel vectors into
198 * vectors of shorts and do the averaging by hand. */
199
200 /* Split the pixel vectors into shorts. */
201 pix3hv = (vector unsigned short) VEC_MERGEH(zero, pix3v);
202 pix3lv = (vector unsigned short) VEC_MERGEL(zero, pix3v);
203 pix3ihv = (vector unsigned short) VEC_MERGEH(zero, pix3iv);
204 pix3ilv = (vector unsigned short) VEC_MERGEL(zero, pix3iv);
205
206 /* Do the averaging on them. */
207 t3 = vec_add(pix3hv, pix3ihv);
208 t4 = vec_add(pix3lv, pix3ilv);
209
210 avghv = vec_sr(vec_add(vec_add(t1, t3), two), two);
211 avglv = vec_sr(vec_add(vec_add(t2, t4), two), two);
212
213 /* Pack the shorts back into a result. */
214 avgv = vec_pack(avghv, avglv);
215
216 /* Calculate a sum of abs differences vector. */
217 t5 = vec_sub(vec_max(pix1v, avgv), vec_min(pix1v, avgv));
218
219 /* Add each 4 pixel group together and put 4 results into sad. */
220 sad = vec_sum4s(t5, sad);
221
222 pix1 += stride;
223 pix3 += stride;
224 /* Transfer the calculated values for pix3 into pix2. */
225 t1 = t3;
226 t2 = t4;
227 }
228 /* Sum up the four partial sums, and put the result into s. */
229 sumdiffs = vec_sums((vector signed int) sad, (vector signed int) zero);
230 sumdiffs = vec_splat(sumdiffs, 3);
231 vec_ste(sumdiffs, 0, &s);
232
233 return s;
234 }
235
236 static int sad16_altivec(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2,
237 ptrdiff_t stride, int h)
238 {
239 int i;
240 int __attribute__((aligned(16))) s;
241 const vector unsigned int zero =
242 (const vector unsigned int) vec_splat_u32(0);
243 vector unsigned int sad = (vector unsigned int) vec_splat_u32(0);
244 vector signed int sumdiffs;
245
246 for (i = 0; i < h; i++) {
247 /* Read potentially unaligned pixels into t1 and t2. */
248 vector unsigned char t1 =vec_ld(0, pix1);
249 vector unsigned char t2 = VEC_LD(0, pix2);
250
251 /* Calculate a sum of abs differences vector. */
252 vector unsigned char t3 = vec_max(t1, t2);
253 vector unsigned char t4 = vec_min(t1, t2);
254 vector unsigned char t5 = vec_sub(t3, t4);
255
256 /* Add each 4 pixel group together and put 4 results into sad. */
257 sad = vec_sum4s(t5, sad);
258
259 pix1 += stride;
260 pix2 += stride;
261 }
262
263 /* Sum up the four partial sums, and put the result into s. */
264 sumdiffs = vec_sums((vector signed int) sad, (vector signed int) zero);
265 sumdiffs = vec_splat(sumdiffs, 3);
266 vec_ste(sumdiffs, 0, &s);
267
268 return s;
269 }
270
271 static int sad8_altivec(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2,
272 ptrdiff_t stride, int h)
273 {
274 int i;
275 int __attribute__((aligned(16))) s;
276 const vector unsigned int zero =
277 (const vector unsigned int) vec_splat_u32(0);
278 const vector unsigned char permclear =
279 (vector unsigned char)
280 { 255, 255, 255, 255, 255, 255, 255, 255, 0, 0, 0, 0, 0, 0, 0, 0 };
281 vector unsigned int sad = (vector unsigned int) vec_splat_u32(0);
282 vector signed int sumdiffs;
283
284 for (i = 0; i < h; i++) {
285 /* Read potentially unaligned pixels into t1 and t2.
286 * Since we're reading 16 pixels, and actually only want 8,
287 * mask out the last 8 pixels. The 0s don't change the sum. */
288 vector unsigned char pix1l = VEC_LD(0, pix1);
289 vector unsigned char pix2l = VEC_LD(0, pix2);
290 vector unsigned char t1 = vec_and(pix1l, permclear);
291 vector unsigned char t2 = vec_and(pix2l, 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 += stride;
302 pix2 += stride;
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 ptrdiff_t stride, int h)
317 {
318 int i;
319 int __attribute__((aligned(16))) s;
320 const vector unsigned int zero =
321 (const vector unsigned int) vec_splat_u32(0);
322 const vector unsigned char permclear =
323 (vector unsigned char)
324 { 255, 255, 255, 255, 255, 255, 255, 255, 0, 0, 0, 0, 0, 0, 0, 0 };
325 vector unsigned int sum = (vector unsigned int) vec_splat_u32(0);
326 vector signed int sumsqr;
327
328 for (i = 0; i < h; i++) {
329 /* Read potentially unaligned pixels into t1 and t2.
330 * Since we're reading 16 pixels, and actually only want 8,
331 * mask out the last 8 pixels. The 0s don't change the sum. */
332 vector unsigned char t1 = vec_and(VEC_LD(0, pix1), permclear);
333 vector unsigned char t2 = vec_and(VEC_LD(0, pix2), permclear);
334
335 /* Since we want to use unsigned chars, we can take advantage
336 * of the fact that abs(a - b) ^ 2 = (a - b) ^ 2. */
337
338 /* Calculate abs differences vector. */
339 vector unsigned char t3 = vec_max(t1, t2);
340 vector unsigned char t4 = vec_min(t1, t2);
341 vector unsigned char t5 = vec_sub(t3, t4);
342
343 /* Square the values and add them to our sum. */
344 sum = vec_msum(t5, t5, sum);
345
346 pix1 += stride;
347 pix2 += stride;
348 }
349
350 /* Sum up the four partial sums, and put the result into s. */
351 sumsqr = vec_sums((vector signed int) sum, (vector signed int) zero);
352 sumsqr = vec_splat(sumsqr, 3);
353 vec_ste(sumsqr, 0, &s);
354
355 return s;
356 }
357
358 /* Sum of Squared Errors for a 16x16 block, AltiVec-enhanced.
359 * It's the sad16_altivec code above w/ squaring added. */
360 static int sse16_altivec(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2,
361 ptrdiff_t stride, int h)
362 {
363 int i;
364 int __attribute__((aligned(16))) s;
365 const vector unsigned int zero =
366 (const vector unsigned int) vec_splat_u32(0);
367 vector unsigned int sum = (vector unsigned int) vec_splat_u32(0);
368 vector signed int sumsqr;
369
370 for (i = 0; i < h; i++) {
371 /* Read potentially unaligned pixels into t1 and t2. */
372 vector unsigned char t1 = vec_ld(0, pix1);
373 vector unsigned char t2 = VEC_LD(0, pix2);
374
375 /* Since we want to use unsigned chars, we can take advantage
376 * of the fact that abs(a - b) ^ 2 = (a - b) ^ 2. */
377
378 /* Calculate abs differences vector. */
379 vector unsigned char t3 = vec_max(t1, t2);
380 vector unsigned char t4 = vec_min(t1, t2);
381 vector unsigned char t5 = vec_sub(t3, t4);
382
383 /* Square the values and add them to our sum. */
384 sum = vec_msum(t5, t5, sum);
385
386 pix1 += stride;
387 pix2 += stride;
388 }
389
390 /* Sum up the four partial sums, and put the result into s. */
391 sumsqr = vec_sums((vector signed int) sum, (vector signed int) zero);
392 sumsqr = vec_splat(sumsqr, 3);
393
394 vec_ste(sumsqr, 0, &s);
395 return s;
396 }
397
398 static int hadamard8_diff8x8_altivec(MpegEncContext *s, uint8_t *dst,
399 uint8_t *src, ptrdiff_t stride, int h)
400 {
401 int __attribute__((aligned(16))) sum;
402 register const vector unsigned char vzero =
403 (const vector unsigned char) vec_splat_u8(0);
404 register vector signed short temp0, temp1, temp2, temp3, temp4,
405 temp5, temp6, temp7;
406 {
407 register const vector signed short vprod1 =
408 (const vector signed short) { 1, -1, 1, -1, 1, -1, 1, -1 };
409 register const vector signed short vprod2 =
410 (const vector signed short) { 1, 1, -1, -1, 1, 1, -1, -1 };
411 register const vector signed short vprod3 =
412 (const vector signed short) { 1, 1, 1, 1, -1, -1, -1, -1 };
413 register const vector unsigned char perm1 =
414 (const vector unsigned char)
415 { 0x02, 0x03, 0x00, 0x01, 0x06, 0x07, 0x04, 0x05,
416 0x0A, 0x0B, 0x08, 0x09, 0x0E, 0x0F, 0x0C, 0x0D };
417 register const vector unsigned char perm2 =
418 (const vector unsigned char)
419 { 0x04, 0x05, 0x06, 0x07, 0x00, 0x01, 0x02, 0x03,
420 0x0C, 0x0D, 0x0E, 0x0F, 0x08, 0x09, 0x0A, 0x0B };
421 register const vector unsigned char perm3 =
422 (const vector unsigned char)
423 { 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F,
424 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07 };
425
426
427 #define ONEITERBUTTERFLY(i, res) \
428 { \
429 register vector unsigned char srcO = unaligned_load(stride * i, src); \
430 register vector unsigned char dstO = unaligned_load(stride * i, dst);\
431 \
432 /* Promote the unsigned chars to signed shorts. */ \
433 /* We're in the 8x8 function, we only care for the first 8. */ \
434 register vector signed short srcV = \
435 (vector signed short) VEC_MERGEH((vector signed char) vzero, \
436 (vector signed char) srcO); \
437 register vector signed short dstV = \
438 (vector signed short) VEC_MERGEH((vector signed char) vzero, \
439 (vector signed char) dstO); \
440 \
441 /* subtractions inside the first butterfly */ \
442 register vector signed short but0 = vec_sub(srcV, dstV); \
443 register vector signed short op1 = vec_perm(but0, but0, perm1); \
444 register vector signed short but1 = vec_mladd(but0, vprod1, op1); \
445 register vector signed short op2 = vec_perm(but1, but1, perm2); \
446 register vector signed short but2 = vec_mladd(but1, vprod2, op2); \
447 register vector signed short op3 = vec_perm(but2, but2, perm3); \
448 res = vec_mladd(but2, vprod3, op3); \
449 }
450
451 ONEITERBUTTERFLY(0, temp0);
452 ONEITERBUTTERFLY(1, temp1);
453 ONEITERBUTTERFLY(2, temp2);
454 ONEITERBUTTERFLY(3, temp3);
455 ONEITERBUTTERFLY(4, temp4);
456 ONEITERBUTTERFLY(5, temp5);
457 ONEITERBUTTERFLY(6, temp6);
458 ONEITERBUTTERFLY(7, temp7);
459 }
460 #undef ONEITERBUTTERFLY
461 {
462 register vector signed int vsum;
463 register vector signed short line0 = vec_add(temp0, temp1);
464 register vector signed short line1 = vec_sub(temp0, temp1);
465 register vector signed short line2 = vec_add(temp2, temp3);
466 register vector signed short line3 = vec_sub(temp2, temp3);
467 register vector signed short line4 = vec_add(temp4, temp5);
468 register vector signed short line5 = vec_sub(temp4, temp5);
469 register vector signed short line6 = vec_add(temp6, temp7);
470 register vector signed short line7 = vec_sub(temp6, temp7);
471
472 register vector signed short line0B = vec_add(line0, line2);
473 register vector signed short line2B = vec_sub(line0, line2);
474 register vector signed short line1B = vec_add(line1, line3);
475 register vector signed short line3B = vec_sub(line1, line3);
476 register vector signed short line4B = vec_add(line4, line6);
477 register vector signed short line6B = vec_sub(line4, line6);
478 register vector signed short line5B = vec_add(line5, line7);
479 register vector signed short line7B = vec_sub(line5, line7);
480
481 register vector signed short line0C = vec_add(line0B, line4B);
482 register vector signed short line4C = vec_sub(line0B, line4B);
483 register vector signed short line1C = vec_add(line1B, line5B);
484 register vector signed short line5C = vec_sub(line1B, line5B);
485 register vector signed short line2C = vec_add(line2B, line6B);
486 register vector signed short line6C = vec_sub(line2B, line6B);
487 register vector signed short line3C = vec_add(line3B, line7B);
488 register vector signed short line7C = vec_sub(line3B, line7B);
489
490 vsum = vec_sum4s(vec_abs(line0C), vec_splat_s32(0));
491 vsum = vec_sum4s(vec_abs(line1C), vsum);
492 vsum = vec_sum4s(vec_abs(line2C), vsum);
493 vsum = vec_sum4s(vec_abs(line3C), vsum);
494 vsum = vec_sum4s(vec_abs(line4C), vsum);
495 vsum = vec_sum4s(vec_abs(line5C), vsum);
496 vsum = vec_sum4s(vec_abs(line6C), vsum);
497 vsum = vec_sum4s(vec_abs(line7C), vsum);
498 vsum = vec_sums(vsum, (vector signed int) vzero);
499 vsum = vec_splat(vsum, 3);
500
501 vec_ste(vsum, 0, &sum);
502 }
503 return sum;
504 }
505
506 /*
507 * 16x8 works with 16 elements; it allows to avoid replicating loads, and
508 * gives the compiler more room for scheduling. It's only used from
509 * inside hadamard8_diff16_altivec.
510 *
511 * Unfortunately, it seems gcc-3.3 is a bit dumb, and the compiled code has
512 * a LOT of spill code, it seems gcc (unlike xlc) cannot keep everything in
513 * registers by itself. The following code includes hand-made register
514 * allocation. It's not clean, but on a 7450 the resulting code is much faster
515 * (best case falls from 700+ cycles to 550).
516 *
517 * xlc doesn't add spill code, but it doesn't know how to schedule for the
518 * 7450, and its code isn't much faster than gcc-3.3 on the 7450 (but uses
519 * 25% fewer instructions...)
520 *
521 * On the 970, the hand-made RA is still a win (around 690 vs. around 780),
522 * but xlc goes to around 660 on the regular C code...
523 */
524 static int hadamard8_diff16x8_altivec(MpegEncContext *s, uint8_t *dst,
525 uint8_t *src, ptrdiff_t stride, int h)
526 {
527 int __attribute__((aligned(16))) sum;
528 register vector signed short
529 temp0 __asm__ ("v0"),
530 temp1 __asm__ ("v1"),
531 temp2 __asm__ ("v2"),
532 temp3 __asm__ ("v3"),
533 temp4 __asm__ ("v4"),
534 temp5 __asm__ ("v5"),
535 temp6 __asm__ ("v6"),
536 temp7 __asm__ ("v7");
537 register vector signed short
538 temp0S __asm__ ("v8"),
539 temp1S __asm__ ("v9"),
540 temp2S __asm__ ("v10"),
541 temp3S __asm__ ("v11"),
542 temp4S __asm__ ("v12"),
543 temp5S __asm__ ("v13"),
544 temp6S __asm__ ("v14"),
545 temp7S __asm__ ("v15");
546 register const vector unsigned char vzero __asm__ ("v31") =
547 (const vector unsigned char) vec_splat_u8(0);
548 {
549 register const vector signed short vprod1 __asm__ ("v16") =
550 (const vector signed short) { 1, -1, 1, -1, 1, -1, 1, -1 };
551
552 register const vector signed short vprod2 __asm__ ("v17") =
553 (const vector signed short) { 1, 1, -1, -1, 1, 1, -1, -1 };
554
555 register const vector signed short vprod3 __asm__ ("v18") =
556 (const vector signed short) { 1, 1, 1, 1, -1, -1, -1, -1 };
557
558 register const vector unsigned char perm1 __asm__ ("v19") =
559 (const vector unsigned char)
560 { 0x02, 0x03, 0x00, 0x01, 0x06, 0x07, 0x04, 0x05,
561 0x0A, 0x0B, 0x08, 0x09, 0x0E, 0x0F, 0x0C, 0x0D };
562
563 register const vector unsigned char perm2 __asm__ ("v20") =
564 (const vector unsigned char)
565 { 0x04, 0x05, 0x06, 0x07, 0x00, 0x01, 0x02, 0x03,
566 0x0C, 0x0D, 0x0E, 0x0F, 0x08, 0x09, 0x0A, 0x0B };
567
568 register const vector unsigned char perm3 __asm__ ("v21") =
569 (const vector unsigned char)
570 { 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F,
571 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07 };
572
573 #define ONEITERBUTTERFLY(i, res1, res2) \
574 { \
575 register vector unsigned char srcO __asm__ ("v22") = \
576 unaligned_load(stride * i, src); \
577 register vector unsigned char dstO __asm__ ("v23") = \
578 unaligned_load(stride * i, dst);\
579 \
580 /* Promote the unsigned chars to signed shorts. */ \
581 register vector signed short srcV __asm__ ("v24") = \
582 (vector signed short) VEC_MERGEH((vector signed char) vzero, \
583 (vector signed char) srcO); \
584 register vector signed short dstV __asm__ ("v25") = \
585 (vector signed short) VEC_MERGEH((vector signed char) vzero, \
586 (vector signed char) dstO); \
587 register vector signed short srcW __asm__ ("v26") = \
588 (vector signed short) VEC_MERGEL((vector signed char) vzero, \
589 (vector signed char) srcO); \
590 register vector signed short dstW __asm__ ("v27") = \
591 (vector signed short) VEC_MERGEL((vector signed char) vzero, \
592 (vector signed char) dstO); \
593 \
594 /* subtractions inside the first butterfly */ \
595 register vector signed short but0 __asm__ ("v28") = \
596 vec_sub(srcV, dstV); \
597 register vector signed short but0S __asm__ ("v29") = \
598 vec_sub(srcW, dstW); \
599 register vector signed short op1 __asm__ ("v30") = \
600 vec_perm(but0, but0, perm1); \
601 register vector signed short but1 __asm__ ("v22") = \
602 vec_mladd(but0, vprod1, op1); \
603 register vector signed short op1S __asm__ ("v23") = \
604 vec_perm(but0S, but0S, perm1); \
605 register vector signed short but1S __asm__ ("v24") = \
606 vec_mladd(but0S, vprod1, op1S); \
607 register vector signed short op2 __asm__ ("v25") = \
608 vec_perm(but1, but1, perm2); \
609 register vector signed short but2 __asm__ ("v26") = \
610 vec_mladd(but1, vprod2, op2); \
611 register vector signed short op2S __asm__ ("v27") = \
612 vec_perm(but1S, but1S, perm2); \
613 register vector signed short but2S __asm__ ("v28") = \
614 vec_mladd(but1S, vprod2, op2S); \
615 register vector signed short op3 __asm__ ("v29") = \
616 vec_perm(but2, but2, perm3); \
617 register vector signed short op3S __asm__ ("v30") = \
618 vec_perm(but2S, but2S, perm3); \
619 res1 = vec_mladd(but2, vprod3, op3); \
620 res2 = vec_mladd(but2S, vprod3, op3S); \
621 }
622
623 ONEITERBUTTERFLY(0, temp0, temp0S);
624 ONEITERBUTTERFLY(1, temp1, temp1S);
625 ONEITERBUTTERFLY(2, temp2, temp2S);
626 ONEITERBUTTERFLY(3, temp3, temp3S);
627 ONEITERBUTTERFLY(4, temp4, temp4S);
628 ONEITERBUTTERFLY(5, temp5, temp5S);
629 ONEITERBUTTERFLY(6, temp6, temp6S);
630 ONEITERBUTTERFLY(7, temp7, temp7S);
631 }
632 #undef ONEITERBUTTERFLY
633 {
634 register vector signed int vsum;
635
636 register vector signed short line0 = vec_add(temp0, temp1);
637 register vector signed short line1 = vec_sub(temp0, temp1);
638 register vector signed short line2 = vec_add(temp2, temp3);
639 register vector signed short line3 = vec_sub(temp2, temp3);
640 register vector signed short line4 = vec_add(temp4, temp5);
641 register vector signed short line5 = vec_sub(temp4, temp5);
642 register vector signed short line6 = vec_add(temp6, temp7);
643 register vector signed short line7 = vec_sub(temp6, temp7);
644
645 register vector signed short line0B = vec_add(line0, line2);
646 register vector signed short line2B = vec_sub(line0, line2);
647 register vector signed short line1B = vec_add(line1, line3);
648 register vector signed short line3B = vec_sub(line1, line3);
649 register vector signed short line4B = vec_add(line4, line6);
650 register vector signed short line6B = vec_sub(line4, line6);
651 register vector signed short line5B = vec_add(line5, line7);
652 register vector signed short line7B = vec_sub(line5, line7);
653
654 register vector signed short line0C = vec_add(line0B, line4B);
655 register vector signed short line4C = vec_sub(line0B, line4B);
656 register vector signed short line1C = vec_add(line1B, line5B);
657 register vector signed short line5C = vec_sub(line1B, line5B);
658 register vector signed short line2C = vec_add(line2B, line6B);
659 register vector signed short line6C = vec_sub(line2B, line6B);
660 register vector signed short line3C = vec_add(line3B, line7B);
661 register vector signed short line7C = vec_sub(line3B, line7B);
662
663 register vector signed short line0S = vec_add(temp0S, temp1S);
664 register vector signed short line1S = vec_sub(temp0S, temp1S);
665 register vector signed short line2S = vec_add(temp2S, temp3S);
666 register vector signed short line3S = vec_sub(temp2S, temp3S);
667 register vector signed short line4S = vec_add(temp4S, temp5S);
668 register vector signed short line5S = vec_sub(temp4S, temp5S);
669 register vector signed short line6S = vec_add(temp6S, temp7S);
670 register vector signed short line7S = vec_sub(temp6S, temp7S);
671
672 register vector signed short line0BS = vec_add(line0S, line2S);
673 register vector signed short line2BS = vec_sub(line0S, line2S);
674 register vector signed short line1BS = vec_add(line1S, line3S);
675 register vector signed short line3BS = vec_sub(line1S, line3S);
676 register vector signed short line4BS = vec_add(line4S, line6S);
677 register vector signed short line6BS = vec_sub(line4S, line6S);
678 register vector signed short line5BS = vec_add(line5S, line7S);
679 register vector signed short line7BS = vec_sub(line5S, line7S);
680
681 register vector signed short line0CS = vec_add(line0BS, line4BS);
682 register vector signed short line4CS = vec_sub(line0BS, line4BS);
683 register vector signed short line1CS = vec_add(line1BS, line5BS);
684 register vector signed short line5CS = vec_sub(line1BS, line5BS);
685 register vector signed short line2CS = vec_add(line2BS, line6BS);
686 register vector signed short line6CS = vec_sub(line2BS, line6BS);
687 register vector signed short line3CS = vec_add(line3BS, line7BS);
688 register vector signed short line7CS = vec_sub(line3BS, line7BS);
689
690 vsum = vec_sum4s(vec_abs(line0C), vec_splat_s32(0));
691 vsum = vec_sum4s(vec_abs(line1C), vsum);
692 vsum = vec_sum4s(vec_abs(line2C), vsum);
693 vsum = vec_sum4s(vec_abs(line3C), vsum);
694 vsum = vec_sum4s(vec_abs(line4C), vsum);
695 vsum = vec_sum4s(vec_abs(line5C), vsum);
696 vsum = vec_sum4s(vec_abs(line6C), vsum);
697 vsum = vec_sum4s(vec_abs(line7C), vsum);
698
699 vsum = vec_sum4s(vec_abs(line0CS), vsum);
700 vsum = vec_sum4s(vec_abs(line1CS), vsum);
701 vsum = vec_sum4s(vec_abs(line2CS), vsum);
702 vsum = vec_sum4s(vec_abs(line3CS), vsum);
703 vsum = vec_sum4s(vec_abs(line4CS), vsum);
704 vsum = vec_sum4s(vec_abs(line5CS), vsum);
705 vsum = vec_sum4s(vec_abs(line6CS), vsum);
706 vsum = vec_sum4s(vec_abs(line7CS), vsum);
707 vsum = vec_sums(vsum, (vector signed int) vzero);
708 vsum = vec_splat(vsum, 3);
709
710 vec_ste(vsum, 0, &sum);
711 }
712 return sum;
713 }
714
715 static int hadamard8_diff16_altivec(MpegEncContext *s, uint8_t *dst,
716 uint8_t *src, ptrdiff_t stride, int h)
717 {
718 int score = hadamard8_diff16x8_altivec(s, dst, src, stride, 8);
719
720 if (h == 16) {
721 dst += 8 * stride;
722 src += 8 * stride;
723 score += hadamard8_diff16x8_altivec(s, dst, src, stride, 8);
724 }
725 return score;
726 }
727 #endif /* HAVE_ALTIVEC */
728
729 av_cold void ff_me_cmp_init_ppc(MECmpContext *c, AVCodecContext *avctx)
730 {
731 #if HAVE_ALTIVEC
732 if (!PPC_ALTIVEC(av_get_cpu_flags()))
733 return;
734
735 c->pix_abs[0][1] = sad16_x2_altivec;
736 c->pix_abs[0][2] = sad16_y2_altivec;
737 c->pix_abs[0][3] = sad16_xy2_altivec;
738 c->pix_abs[0][0] = sad16_altivec;
739 c->pix_abs[1][0] = sad8_altivec;
740
741 c->sad[0] = sad16_altivec;
742 c->sad[1] = sad8_altivec;
743 c->sse[0] = sse16_altivec;
744 c->sse[1] = sse8_altivec;
745
746 c->hadamard8_diff[0] = hadamard8_diff16_altivec;
747 c->hadamard8_diff[1] = hadamard8_diff8x8_altivec;
748 #endif /* HAVE_ALTIVEC */
749 }