2
* Copyright (c) 2002 Brian Foley
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* Copyright (c) 2002 Dieter Shirley
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* Copyright (c) 2003-2004 Romain Dolbeau <romain@dolbeau.org>
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* This file is part of Libav.
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* Libav is free software; you can redistribute it and/or
9
* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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* Libav is distributed in the hope that it will be useful,
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* 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.
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* You should have received a copy of the GNU Lesser General Public
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* License along with Libav; if not, write to the Free Software
20
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
28
#include "libavutil/attributes.h"
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#include "libavutil/cpu.h"
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#include "libavutil/ppc/cpu.h"
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#include "libavutil/ppc/types_altivec.h"
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#include "libavutil/ppc/util_altivec.h"
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#include "libavcodec/avcodec.h"
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#include "libavcodec/mpegvideo.h"
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#include "libavcodec/me_cmp.h"
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static int sad16_x2_altivec(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2,
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const vector unsigned char zero =
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(const vector unsigned char) vec_splat_u8(0);
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vector unsigned char perm1 = vec_lvsl(0, pix2);
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vector unsigned char perm2 = vec_add(perm1, vec_splat_u8(1));
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vector unsigned int sad = (vector unsigned int) vec_splat_u32(0);
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vector signed int sumdiffs;
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for (i = 0; i < h; i++) {
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/* Read unaligned pixels into our vectors. The vectors are as follows:
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* pix1v: pix1[0] - pix1[15]
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* pix2v: pix2[0] - pix2[15] pix2iv: pix2[1] - pix2[16] */
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vector unsigned char pix1v = vec_ld(0, pix1);
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vector unsigned char pix2l = vec_ld(0, pix2);
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vector unsigned char pix2r = vec_ld(16, pix2);
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vector unsigned char pix2v = vec_perm(pix2l, pix2r, perm1);
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vector unsigned char pix2iv = vec_perm(pix2l, pix2r, perm2);
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/* Calculate the average vector. */
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vector unsigned char avgv = vec_avg(pix2v, pix2iv);
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/* Calculate a sum of abs differences vector. */
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vector unsigned char t5 = vec_sub(vec_max(pix1v, avgv),
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vec_min(pix1v, avgv));
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/* Add each 4 pixel group together and put 4 results into sad. */
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sad = vec_sum4s(t5, sad);
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/* Sum up the four partial sums, and put the result into s. */
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sumdiffs = vec_sums((vector signed int) sad, (vector signed int) zero);
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sumdiffs = vec_splat(sumdiffs, 3);
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vec_ste(sumdiffs, 0, &s);
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static int sad16_y2_altivec(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2,
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const vector unsigned char zero =
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(const vector unsigned char) vec_splat_u8(0);
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vector unsigned char perm = vec_lvsl(0, pix2);
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vector unsigned char pix1v, pix3v, avgv, t5;
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vector unsigned int sad = (vector unsigned int) vec_splat_u32(0);
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vector signed int sumdiffs;
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uint8_t *pix3 = pix2 + line_size;
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/* Due to the fact that pix3 = pix2 + line_size, the pix3 of one
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* iteration becomes pix2 in the next iteration. We can use this
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* fact to avoid a potentially expensive unaligned read, each
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* time around the loop.
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* Read unaligned pixels into our vectors. The vectors are as follows:
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* pix2v: pix2[0] - pix2[15]
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* Split the pixel vectors into shorts. */
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vector unsigned char pix2l = vec_ld(0, pix2);
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vector unsigned char pix2r = vec_ld(15, pix2);
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vector unsigned char pix2v = vec_perm(pix2l, pix2r, perm);
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for (i = 0; i < h; i++) {
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/* Read unaligned pixels into our vectors. The vectors are as follows:
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* pix1v: pix1[0] - pix1[15]
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* pix3v: pix3[0] - pix3[15] */
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pix1v = vec_ld(0, pix1);
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pix2l = vec_ld(0, pix3);
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pix2r = vec_ld(15, pix3);
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pix3v = vec_perm(pix2l, pix2r, perm);
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/* Calculate the average vector. */
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avgv = vec_avg(pix2v, pix3v);
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/* Calculate a sum of abs differences vector. */
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t5 = vec_sub(vec_max(pix1v, avgv), vec_min(pix1v, avgv));
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/* Add each 4 pixel group together and put 4 results into sad. */
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sad = vec_sum4s(t5, sad);
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/* Sum up the four partial sums, and put the result into s. */
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sumdiffs = vec_sums((vector signed int) sad, (vector signed int) zero);
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sumdiffs = vec_splat(sumdiffs, 3);
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vec_ste(sumdiffs, 0, &s);
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static int sad16_xy2_altivec(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2,
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int line_size, int h)
138
uint8_t *pix3 = pix2 + line_size;
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const vector unsigned char zero =
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(const vector unsigned char) vec_splat_u8(0);
141
const vector unsigned short two =
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(const vector unsigned short) vec_splat_u16(2);
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vector unsigned char avgv, t5;
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vector unsigned char perm1 = vec_lvsl(0, pix2);
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vector unsigned char perm2 = vec_add(perm1, vec_splat_u8(1));
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vector unsigned char pix1v, pix3v, pix3iv;
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vector unsigned short pix3lv, pix3hv, pix3ilv, pix3ihv;
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vector unsigned short avghv, avglv;
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vector unsigned int sad = (vector unsigned int) vec_splat_u32(0);
150
vector signed int sumdiffs;
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);
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vector unsigned char pix2v = vec_perm(pix2l, pix2r, perm1);
162
vector unsigned char pix2iv = vec_perm(pix2l, pix2r, perm2);
164
vector unsigned short pix2hv =
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(vector unsigned short) vec_mergeh(zero, pix2v);
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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);
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vector unsigned short t3, t4;
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);
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pix2l = vec_ld(0, pix3);
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pix2r = vec_ld(16, pix3);
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pix3v = vec_perm(pix2l, pix2r, perm1);
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pix3iv = vec_perm(pix2l, pix2r, perm2);
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
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* it should be 1. Instead, we have to split the pixel vectors into
191
* vectors of shorts and do the averaging by hand. */
193
/* Split the pixel vectors into shorts. */
194
pix3hv = (vector unsigned short) vec_mergeh(zero, pix3v);
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pix3lv = (vector unsigned short) vec_mergel(zero, pix3v);
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pix3ihv = (vector unsigned short) vec_mergeh(zero, pix3iv);
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pix3ilv = (vector unsigned short) vec_mergel(zero, pix3iv);
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/* Do the averaging on them. */
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t3 = vec_add(pix3hv, pix3ihv);
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t4 = vec_add(pix3lv, pix3ilv);
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avghv = vec_sr(vec_add(vec_add(t1, t3), two), two);
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avglv = vec_sr(vec_add(vec_add(t2, t4), two), two);
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/* Pack the shorts back into a result. */
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avgv = vec_pack(avghv, avglv);
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/* Calculate a sum of abs differences vector. */
210
t5 = vec_sub(vec_max(pix1v, avgv), vec_min(pix1v, avgv));
212
/* Add each 4 pixel group together and put 4 results into sad. */
213
sad = vec_sum4s(t5, sad);
217
/* Transfer the calculated values for pix3 into pix2. */
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);
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vec_ste(sumdiffs, 0, &s);
229
static int sad16_altivec(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2,
230
int line_size, int h)
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;
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);
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);
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/* Add each 4 pixel group together and put 4 results into sad. */
252
sad = vec_sum4s(t5, sad);
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);
266
static int sad8_altivec(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2,
267
int line_size, int h)
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;
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),
290
vector unsigned char t2 = vec_and(vec_perm(pix2l, pix2r, perm2),
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);
298
/* Add each 4 pixel group together and put 4 results into sad. */
299
sad = vec_sum4s(t5, sad);
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);
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)
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;
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);
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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),
339
vector unsigned char t2 = vec_and(vec_perm(pix2l, pix2r, perm2),
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/* Since we want to use unsigned chars, we can take advantage
343
* of the fact that abs(a - b) ^ 2 = (a - b) ^ 2. */
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);
350
/* Square the values and add them to our sum. */
351
sum = vec_msum(t5, t5, sum);
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);
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)
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;
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);
384
/* Since we want to use unsigned chars, we can take advantage
385
* of the fact that abs(a - b) ^ 2 = (a - b) ^ 2. */
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);
392
/* Square the values and add them to our sum. */
393
sum = vec_msum(t5, t5, sum);
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);
407
static int hadamard8_diff8x8_altivec(MpegEncContext *s, uint8_t *dst,
408
uint8_t *src, int stride, int h)
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,
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 };
435
#define ONEITERBUTTERFLY(i, res) \
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)); \
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); \
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); \
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);
473
#undef ONEITERBUTTERFLY
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);
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);
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);
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);
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.
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).
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...)
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...
536
static int hadamard8_diff16x8_altivec(MpegEncContext *s, uint8_t *dst,
537
uint8_t *src, int stride, int h)
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);
561
register const vector signed short vprod1 __asm__ ("v16") =
562
(const vector signed short) { 1, -1, 1, -1, 1, -1, 1, -1 };
564
register const vector signed short vprod2 __asm__ ("v17") =
565
(const vector signed short) { 1, 1, -1, -1, 1, 1, -1, -1 };
567
register const vector signed short vprod3 __asm__ ("v18") =
568
(const vector signed short) { 1, 1, 1, 1, -1, -1, -1, -1 };
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 };
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 };
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 };
585
#define ONEITERBUTTERFLY(i, res1, res2) \
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)); \
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); \
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); \
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);
651
#undef ONEITERBUTTERFLY
653
register vector signed int vsum;
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);
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);
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);
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);
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);
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);
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);
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);
733
static int hadamard8_diff16_altivec(MpegEncContext *s, uint8_t *dst,
734
uint8_t *src, int stride, int h)
736
int score = hadamard8_diff16x8_altivec(s, dst, src, stride, 8);
741
score += hadamard8_diff16x8_altivec(s, dst, src, stride, 8);
745
#endif /* HAVE_ALTIVEC */
747
av_cold void ff_me_cmp_init_ppc(MECmpContext *c, AVCodecContext *avctx)
750
if (!PPC_ALTIVEC(av_get_cpu_flags()))
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;
759
c->sad[0] = sad16_altivec;
760
c->sad[1] = sad8_altivec;
761
c->sse[0] = sse16_altivec;
762
c->sse[1] = sse8_altivec;
764
c->hadamard8_diff[0] = hadamard8_diff16_altivec;
765
c->hadamard8_diff[1] = hadamard8_diff8x8_altivec;
766
#endif /* HAVE_ALTIVEC */
added
removed
libavcodec/ppc/me_cmp.c
