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2ba45a60 DM |
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 | |
f6fa7814 DM |
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 | |
2ba45a60 | 57 | static int sad16_x2_altivec(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2, |
f6fa7814 | 58 | ptrdiff_t stride, int h) |
2ba45a60 | 59 | { |
f6fa7814 DM |
60 | int i; |
61 | int __attribute__((aligned(16))) s = 0; | |
2ba45a60 DM |
62 | const vector unsigned char zero = |
63 | (const vector unsigned char) vec_splat_u8(0); | |
2ba45a60 DM |
64 | vector unsigned int sad = (vector unsigned int) vec_splat_u32(0); |
65 | vector signed int sumdiffs; | |
f6fa7814 | 66 | vector unsigned char perm1, perm2, pix2v, pix2iv; |
2ba45a60 | 67 | |
f6fa7814 | 68 | GET_PERM(perm1, perm2, pix2); |
2ba45a60 DM |
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); | |
f6fa7814 | 74 | LOAD_PIX(pix2v, pix2iv, pix2, perm1, perm2); |
2ba45a60 DM |
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 | ||
f6fa7814 DM |
86 | pix1 += stride; |
87 | pix2 += stride; | |
2ba45a60 DM |
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, | |
f6fa7814 | 98 | ptrdiff_t stride, int h) |
2ba45a60 | 99 | { |
f6fa7814 DM |
100 | int i; |
101 | int __attribute__((aligned(16))) s = 0; | |
2ba45a60 DM |
102 | const vector unsigned char zero = |
103 | (const vector unsigned char) vec_splat_u8(0); | |
2ba45a60 DM |
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; | |
2ba45a60 | 107 | |
f6fa7814 DM |
108 | uint8_t *pix3 = pix2 + stride; |
109 | ||
110 | /* Due to the fact that pix3 = pix2 + stride, the pix3 of one | |
2ba45a60 DM |
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. */ | |
f6fa7814 | 117 | vector unsigned char pix2v = VEC_LD(0, pix2); |
2ba45a60 DM |
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); | |
f6fa7814 | 124 | pix3v = VEC_LD(0, pix3); |
2ba45a60 DM |
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 | ||
f6fa7814 | 135 | pix1 += stride; |
2ba45a60 | 136 | pix2v = pix3v; |
f6fa7814 | 137 | pix3 += stride; |
2ba45a60 DM |
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, | |
f6fa7814 | 148 | ptrdiff_t stride, int h) |
2ba45a60 | 149 | { |
f6fa7814 DM |
150 | int i; |
151 | int __attribute__((aligned(16))) s = 0; | |
152 | uint8_t *pix3 = pix2 + stride; | |
2ba45a60 DM |
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; | |
2ba45a60 DM |
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; | |
f6fa7814 DM |
163 | vector unsigned char perm1, perm2, pix2v, pix2iv; |
164 | GET_PERM(perm1, perm2, pix2); | |
2ba45a60 | 165 | |
f6fa7814 | 166 | /* Due to the fact that pix3 = pix2 + stride, the pix3 of one |
2ba45a60 DM |
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. */ | |
f6fa7814 | 173 | LOAD_PIX(pix2v, pix2iv, pix2, perm1, perm2); |
2ba45a60 | 174 | vector unsigned short pix2hv = |
f6fa7814 | 175 | (vector unsigned short) VEC_MERGEH(zero, pix2v); |
2ba45a60 | 176 | vector unsigned short pix2lv = |
f6fa7814 | 177 | (vector unsigned short) VEC_MERGEL(zero, pix2v); |
2ba45a60 | 178 | vector unsigned short pix2ihv = |
f6fa7814 | 179 | (vector unsigned short) VEC_MERGEH(zero, pix2iv); |
2ba45a60 | 180 | vector unsigned short pix2ilv = |
f6fa7814 DM |
181 | (vector unsigned short) VEC_MERGEL(zero, pix2iv); |
182 | ||
2ba45a60 DM |
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); | |
f6fa7814 | 192 | LOAD_PIX(pix3v, pix3iv, pix3, perm1, perm2); |
2ba45a60 DM |
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. */ | |
f6fa7814 DM |
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); | |
2ba45a60 DM |
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 | ||
f6fa7814 DM |
222 | pix1 += stride; |
223 | pix3 += stride; | |
2ba45a60 DM |
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, | |
f6fa7814 | 237 | ptrdiff_t stride, int h) |
2ba45a60 | 238 | { |
f6fa7814 DM |
239 | int i; |
240 | int __attribute__((aligned(16))) s; | |
2ba45a60 DM |
241 | const vector unsigned int zero = |
242 | (const vector unsigned int) vec_splat_u32(0); | |
2ba45a60 DM |
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. */ | |
f6fa7814 DM |
248 | vector unsigned char t1 =vec_ld(0, pix1); |
249 | vector unsigned char t2 = VEC_LD(0, pix2); | |
2ba45a60 DM |
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 | ||
f6fa7814 DM |
259 | pix1 += stride; |
260 | pix2 += stride; | |
2ba45a60 DM |
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, | |
f6fa7814 | 272 | ptrdiff_t stride, int h) |
2ba45a60 | 273 | { |
f6fa7814 DM |
274 | int i; |
275 | int __attribute__((aligned(16))) s; | |
2ba45a60 DM |
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 }; | |
2ba45a60 DM |
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. */ | |
f6fa7814 DM |
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); | |
2ba45a60 DM |
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 | ||
f6fa7814 DM |
301 | pix1 += stride; |
302 | pix2 += stride; | |
2ba45a60 DM |
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, | |
f6fa7814 | 316 | ptrdiff_t stride, int h) |
2ba45a60 | 317 | { |
f6fa7814 DM |
318 | int i; |
319 | int __attribute__((aligned(16))) s; | |
2ba45a60 DM |
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 }; | |
2ba45a60 DM |
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. */ | |
f6fa7814 DM |
332 | vector unsigned char t1 = vec_and(VEC_LD(0, pix1), permclear); |
333 | vector unsigned char t2 = vec_and(VEC_LD(0, pix2), permclear); | |
2ba45a60 DM |
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 | ||
f6fa7814 DM |
346 | pix1 += stride; |
347 | pix2 += stride; | |
2ba45a60 DM |
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, | |
f6fa7814 | 361 | ptrdiff_t stride, int h) |
2ba45a60 | 362 | { |
f6fa7814 DM |
363 | int i; |
364 | int __attribute__((aligned(16))) s; | |
2ba45a60 DM |
365 | const vector unsigned int zero = |
366 | (const vector unsigned int) vec_splat_u32(0); | |
2ba45a60 DM |
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. */ | |
2ba45a60 | 372 | vector unsigned char t1 = vec_ld(0, pix1); |
f6fa7814 | 373 | vector unsigned char t2 = VEC_LD(0, pix2); |
2ba45a60 DM |
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 | ||
f6fa7814 DM |
386 | pix1 += stride; |
387 | pix2 += stride; | |
2ba45a60 DM |
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); | |
2ba45a60 | 393 | |
f6fa7814 | 394 | vec_ste(sumsqr, 0, &s); |
2ba45a60 DM |
395 | return s; |
396 | } | |
397 | ||
398 | static int hadamard8_diff8x8_altivec(MpegEncContext *s, uint8_t *dst, | |
f6fa7814 | 399 | uint8_t *src, ptrdiff_t stride, int h) |
2ba45a60 | 400 | { |
f6fa7814 | 401 | int __attribute__((aligned(16))) sum; |
2ba45a60 DM |
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 | ||
f6fa7814 | 426 | |
2ba45a60 DM |
427 | #define ONEITERBUTTERFLY(i, res) \ |
428 | { \ | |
f6fa7814 DM |
429 | register vector unsigned char srcO = unaligned_load(stride * i, src); \ |
430 | register vector unsigned char dstO = unaligned_load(stride * i, dst);\ | |
2ba45a60 DM |
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 = \ | |
f6fa7814 | 435 | (vector signed short) VEC_MERGEH((vector signed char) vzero, \ |
2ba45a60 DM |
436 | (vector signed char) srcO); \ |
437 | register vector signed short dstV = \ | |
f6fa7814 | 438 | (vector signed short) VEC_MERGEH((vector signed char) vzero, \ |
2ba45a60 DM |
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 | } | |
f6fa7814 | 450 | |
2ba45a60 DM |
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); | |
f6fa7814 | 500 | |
2ba45a60 DM |
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, | |
f6fa7814 | 525 | uint8_t *src, ptrdiff_t stride, int h) |
2ba45a60 | 526 | { |
f6fa7814 | 527 | int __attribute__((aligned(16))) sum; |
2ba45a60 DM |
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 | { \ | |
2ba45a60 | 575 | register vector unsigned char srcO __asm__ ("v22") = \ |
f6fa7814 | 576 | unaligned_load(stride * i, src); \ |
2ba45a60 | 577 | register vector unsigned char dstO __asm__ ("v23") = \ |
f6fa7814 | 578 | unaligned_load(stride * i, dst);\ |
2ba45a60 DM |
579 | \ |
580 | /* Promote the unsigned chars to signed shorts. */ \ | |
581 | register vector signed short srcV __asm__ ("v24") = \ | |
f6fa7814 | 582 | (vector signed short) VEC_MERGEH((vector signed char) vzero, \ |
2ba45a60 DM |
583 | (vector signed char) srcO); \ |
584 | register vector signed short dstV __asm__ ("v25") = \ | |
f6fa7814 | 585 | (vector signed short) VEC_MERGEH((vector signed char) vzero, \ |
2ba45a60 DM |
586 | (vector signed char) dstO); \ |
587 | register vector signed short srcW __asm__ ("v26") = \ | |
f6fa7814 | 588 | (vector signed short) VEC_MERGEL((vector signed char) vzero, \ |
2ba45a60 DM |
589 | (vector signed char) srcO); \ |
590 | register vector signed short dstW __asm__ ("v27") = \ | |
f6fa7814 | 591 | (vector signed short) VEC_MERGEL((vector signed char) vzero, \ |
2ba45a60 DM |
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 | } | |
f6fa7814 | 622 | |
2ba45a60 DM |
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); | |
f6fa7814 | 709 | |
2ba45a60 DM |
710 | vec_ste(vsum, 0, &sum); |
711 | } | |
712 | return sum; | |
713 | } | |
714 | ||
715 | static int hadamard8_diff16_altivec(MpegEncContext *s, uint8_t *dst, | |
f6fa7814 | 716 | uint8_t *src, ptrdiff_t stride, int h) |
2ba45a60 DM |
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 | } |