Add missing const qualifiers to AltiVec function parameters where appropriate.
[libav.git] / libswscale / ppc / swscale_altivec_template.c
CommitLineData
e50bc5a4 1/*
d026b45e
DB
2 * AltiVec-enhanced yuv2yuvX
3 *
4 * Copyright (C) 2004 Romain Dolbeau <romain@dolbeau.org>
e281d684 5 * based on the equivalent C code in swscale.c
d026b45e
DB
6 *
7 * This file is part of FFmpeg.
8 *
4d02387f
DB
9 * FFmpeg is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Lesser General Public
11 * License as published by the Free Software Foundation; either
12 * version 2.1 of the License, or (at your option) any later version.
d026b45e
DB
13 *
14 * FFmpeg is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
4d02387f
DB
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Lesser General Public License for more details.
d026b45e 18 *
4d02387f
DB
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with FFmpeg; if not, write to the Free Software
b19bcbaa 21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
d026b45e 22 */
a2faa401 23
265a1ac7 24#define vzero vec_splat_s32(0)
8c266f0c 25
a2faa401
RD
26static inline void
27altivec_packIntArrayToCharArray(int *val, uint8_t* dest, int dstW) {
6e42e6c4
DB
28 register int i;
29 vector unsigned int altivec_vectorShiftInt19 =
30c48a0a 30 vec_add(vec_splat_u32(10), vec_splat_u32(9));
6e42e6c4 31 if ((unsigned long)dest % 16) {
737278c8
DB
32 /* badly aligned store, we force store alignment */
33 /* and will handle load misalignment on val w/ vec_perm */
6e42e6c4
DB
34 vector unsigned char perm1;
35 vector signed int v1;
36 for (i = 0 ; (i < dstW) &&
37 (((unsigned long)dest + i) % 16) ; i++) {
38 int t = val[i] >> 19;
39 dest[i] = (t < 0) ? 0 : ((t > 255) ? 255 : t);
40 }
41 perm1 = vec_lvsl(i << 2, val);
42 v1 = vec_ld(i << 2, val);
43 for ( ; i < (dstW - 15); i+=16) {
44 int offset = i << 2;
45 vector signed int v2 = vec_ld(offset + 16, val);
46 vector signed int v3 = vec_ld(offset + 32, val);
47 vector signed int v4 = vec_ld(offset + 48, val);
48 vector signed int v5 = vec_ld(offset + 64, val);
30c48a0a
BF
49 vector signed int v12 = vec_perm(v1, v2, perm1);
50 vector signed int v23 = vec_perm(v2, v3, perm1);
51 vector signed int v34 = vec_perm(v3, v4, perm1);
52 vector signed int v45 = vec_perm(v4, v5, perm1);
6e42e6c4
DB
53
54 vector signed int vA = vec_sra(v12, altivec_vectorShiftInt19);
55 vector signed int vB = vec_sra(v23, altivec_vectorShiftInt19);
56 vector signed int vC = vec_sra(v34, altivec_vectorShiftInt19);
57 vector signed int vD = vec_sra(v45, altivec_vectorShiftInt19);
58 vector unsigned short vs1 = vec_packsu(vA, vB);
59 vector unsigned short vs2 = vec_packsu(vC, vD);
60 vector unsigned char vf = vec_packsu(vs1, vs2);
61 vec_st(vf, i, dest);
62 v1 = v5;
63 }
64 } else { // dest is properly aligned, great
65 for (i = 0; i < (dstW - 15); i+=16) {
66 int offset = i << 2;
67 vector signed int v1 = vec_ld(offset, val);
68 vector signed int v2 = vec_ld(offset + 16, val);
69 vector signed int v3 = vec_ld(offset + 32, val);
70 vector signed int v4 = vec_ld(offset + 48, val);
71 vector signed int v5 = vec_sra(v1, altivec_vectorShiftInt19);
72 vector signed int v6 = vec_sra(v2, altivec_vectorShiftInt19);
73 vector signed int v7 = vec_sra(v3, altivec_vectorShiftInt19);
74 vector signed int v8 = vec_sra(v4, altivec_vectorShiftInt19);
75 vector unsigned short vs1 = vec_packsu(v5, v6);
76 vector unsigned short vs2 = vec_packsu(v7, v8);
77 vector unsigned char vf = vec_packsu(vs1, vs2);
78 vec_st(vf, i, dest);
79 }
a2faa401 80 }
6e42e6c4
DB
81 for ( ; i < dstW ; i++) {
82 int t = val[i] >> 19;
83 dest[i] = (t < 0) ? 0 : ((t > 255) ? 255 : t);
a2faa401 84 }
a2faa401
RD
85}
86
87static inline void
f1933e43
DB
88yuv2yuvX_altivec_real(const int16_t *lumFilter, int16_t **lumSrc, int lumFilterSize,
89 const int16_t *chrFilter, int16_t **chrSrc, int chrFilterSize,
6e42e6c4 90 uint8_t *dest, uint8_t *uDest, uint8_t *vDest, int dstW, int chrDstW)
a2faa401 91{
6e42e6c4
DB
92 const vector signed int vini = {(1 << 18), (1 << 18), (1 << 18), (1 << 18)};
93 register int i, j;
94 {
95 int __attribute__ ((aligned (16))) val[dstW];
6a4970ab 96
6e42e6c4
DB
97 for (i = 0; i < (dstW -7); i+=4) {
98 vec_st(vini, i << 2, val);
99 }
100 for (; i < dstW; i++) {
101 val[i] = (1 << 18);
102 }
6a4970ab 103
6e42e6c4
DB
104 for (j = 0; j < lumFilterSize; j++) {
105 vector signed short l1, vLumFilter = vec_ld(j << 1, lumFilter);
106 vector unsigned char perm, perm0 = vec_lvsl(j << 1, lumFilter);
107 vLumFilter = vec_perm(vLumFilter, vLumFilter, perm0);
108 vLumFilter = vec_splat(vLumFilter, 0); // lumFilter[j] is loaded 8 times in vLumFilter
6a4970ab 109
6e42e6c4
DB
110 perm = vec_lvsl(0, lumSrc[j]);
111 l1 = vec_ld(0, lumSrc[j]);
6a4970ab 112
6e42e6c4
DB
113 for (i = 0; i < (dstW - 7); i+=8) {
114 int offset = i << 2;
115 vector signed short l2 = vec_ld((i << 1) + 16, lumSrc[j]);
6a4970ab 116
6e42e6c4
DB
117 vector signed int v1 = vec_ld(offset, val);
118 vector signed int v2 = vec_ld(offset + 16, val);
6a4970ab 119
6e42e6c4 120 vector signed short ls = vec_perm(l1, l2, perm); // lumSrc[j][i] ... lumSrc[j][i+7]
6a4970ab 121
6e42e6c4
DB
122 vector signed int i1 = vec_mule(vLumFilter, ls);
123 vector signed int i2 = vec_mulo(vLumFilter, ls);
6a4970ab 124
6e42e6c4
DB
125 vector signed int vf1 = vec_mergeh(i1, i2);
126 vector signed int vf2 = vec_mergel(i1, i2); // lumSrc[j][i] * lumFilter[j] ... lumSrc[j][i+7] * lumFilter[j]
6a4970ab 127
6e42e6c4
DB
128 vector signed int vo1 = vec_add(v1, vf1);
129 vector signed int vo2 = vec_add(v2, vf2);
6a4970ab 130
6e42e6c4
DB
131 vec_st(vo1, offset, val);
132 vec_st(vo2, offset + 16, val);
6a4970ab 133
6e42e6c4
DB
134 l1 = l2;
135 }
136 for ( ; i < dstW; i++) {
137 val[i] += lumSrc[j][i] * lumFilter[j];
138 }
139 }
30c48a0a 140 altivec_packIntArrayToCharArray(val, dest, dstW);
a2faa401 141 }
6e42e6c4
DB
142 if (uDest != 0) {
143 int __attribute__ ((aligned (16))) u[chrDstW];
144 int __attribute__ ((aligned (16))) v[chrDstW];
145
146 for (i = 0; i < (chrDstW -7); i+=4) {
147 vec_st(vini, i << 2, u);
148 vec_st(vini, i << 2, v);
149 }
150 for (; i < chrDstW; i++) {
151 u[i] = (1 << 18);
152 v[i] = (1 << 18);
153 }
6a4970ab 154
6e42e6c4
DB
155 for (j = 0; j < chrFilterSize; j++) {
156 vector signed short l1, l1_V, vChrFilter = vec_ld(j << 1, chrFilter);
157 vector unsigned char perm, perm0 = vec_lvsl(j << 1, chrFilter);
158 vChrFilter = vec_perm(vChrFilter, vChrFilter, perm0);
159 vChrFilter = vec_splat(vChrFilter, 0); // chrFilter[j] is loaded 8 times in vChrFilter
160
161 perm = vec_lvsl(0, chrSrc[j]);
162 l1 = vec_ld(0, chrSrc[j]);
163 l1_V = vec_ld(2048 << 1, chrSrc[j]);
164
165 for (i = 0; i < (chrDstW - 7); i+=8) {
166 int offset = i << 2;
167 vector signed short l2 = vec_ld((i << 1) + 16, chrSrc[j]);
168 vector signed short l2_V = vec_ld(((i + 2048) << 1) + 16, chrSrc[j]);
169
170 vector signed int v1 = vec_ld(offset, u);
171 vector signed int v2 = vec_ld(offset + 16, u);
172 vector signed int v1_V = vec_ld(offset, v);
173 vector signed int v2_V = vec_ld(offset + 16, v);
174
175 vector signed short ls = vec_perm(l1, l2, perm); // chrSrc[j][i] ... chrSrc[j][i+7]
176 vector signed short ls_V = vec_perm(l1_V, l2_V, perm); // chrSrc[j][i+2048] ... chrSrc[j][i+2055]
177
178 vector signed int i1 = vec_mule(vChrFilter, ls);
179 vector signed int i2 = vec_mulo(vChrFilter, ls);
180 vector signed int i1_V = vec_mule(vChrFilter, ls_V);
181 vector signed int i2_V = vec_mulo(vChrFilter, ls_V);
182
183 vector signed int vf1 = vec_mergeh(i1, i2);
184 vector signed int vf2 = vec_mergel(i1, i2); // chrSrc[j][i] * chrFilter[j] ... chrSrc[j][i+7] * chrFilter[j]
185 vector signed int vf1_V = vec_mergeh(i1_V, i2_V);
186 vector signed int vf2_V = vec_mergel(i1_V, i2_V); // chrSrc[j][i] * chrFilter[j] ... chrSrc[j][i+7] * chrFilter[j]
187
188 vector signed int vo1 = vec_add(v1, vf1);
189 vector signed int vo2 = vec_add(v2, vf2);
190 vector signed int vo1_V = vec_add(v1_V, vf1_V);
191 vector signed int vo2_V = vec_add(v2_V, vf2_V);
192
193 vec_st(vo1, offset, u);
194 vec_st(vo2, offset + 16, u);
195 vec_st(vo1_V, offset, v);
196 vec_st(vo2_V, offset + 16, v);
197
198 l1 = l2;
199 l1_V = l2_V;
200 }
201 for ( ; i < chrDstW; i++) {
202 u[i] += chrSrc[j][i] * chrFilter[j];
203 v[i] += chrSrc[j][i + 2048] * chrFilter[j];
204 }
205 }
30c48a0a
BF
206 altivec_packIntArrayToCharArray(u, uDest, chrDstW);
207 altivec_packIntArrayToCharArray(v, vDest, chrDstW);
a2faa401 208 }
a2faa401 209}
8c266f0c 210
f1933e43
DB
211static inline void hScale_altivec_real(int16_t *dst, int dstW,
212 const uint8_t *src, int srcW,
213 int xInc, const int16_t *filter,
214 const int16_t *filterPos, int filterSize)
215{
6e42e6c4
DB
216 register int i;
217 int __attribute__ ((aligned (16))) tempo[4];
218
219 if (filterSize % 4) {
220 for (i=0; i<dstW; i++) {
221 register int j;
222 register int srcPos = filterPos[i];
223 register int val = 0;
224 for (j=0; j<filterSize; j++) {
225 val += ((int)src[srcPos + j])*filter[filterSize*i + j];
226 }
43cbf8ad 227 dst[i] = FFMIN(val>>7, (1<<15)-1);
6e42e6c4 228 }
8c266f0c 229 }
6e42e6c4
DB
230 else
231 switch (filterSize) {
232 case 4:
8c266f0c 233 {
6e42e6c4
DB
234 for (i=0; i<dstW; i++) {
235 register int srcPos = filterPos[i];
236
237 vector unsigned char src_v0 = vec_ld(srcPos, src);
238 vector unsigned char src_v1, src_vF;
239 vector signed short src_v, filter_v;
240 vector signed int val_vEven, val_s;
241 if ((((int)src + srcPos)% 16) > 12) {
242 src_v1 = vec_ld(srcPos + 16, src);
243 }
244 src_vF = vec_perm(src_v0, src_v1, vec_lvsl(srcPos, src));
245
246 src_v = // vec_unpackh sign-extends...
247 (vector signed short)(vec_mergeh((vector unsigned char)vzero, src_vF));
248 // now put our elements in the even slots
249 src_v = vec_mergeh(src_v, (vector signed short)vzero);
250
251 filter_v = vec_ld(i << 3, filter);
8a322796 252 // The 3 above is 2 (filterSize == 4) + 1 (sizeof(short) == 2).
8c266f0c 253
8a322796 254 // The neat trick: We only care for half the elements,
8c266f0c 255 // high or low depending on (i<<3)%16 (it's 0 or 8 here),
8a322796
DB
256 // and we're going to use vec_mule, so we choose
257 // carefully how to "unpack" the elements into the even slots.
6e42e6c4 258 if ((i << 3) % 16)
30c48a0a 259 filter_v = vec_mergel(filter_v, (vector signed short)vzero);
6e42e6c4 260 else
30c48a0a 261 filter_v = vec_mergeh(filter_v, (vector signed short)vzero);
6e42e6c4
DB
262
263 val_vEven = vec_mule(src_v, filter_v);
264 val_s = vec_sums(val_vEven, vzero);
265 vec_st(val_s, 0, tempo);
43cbf8ad 266 dst[i] = FFMIN(tempo[3]>>7, (1<<15)-1);
6e42e6c4 267 }
8c266f0c
RD
268 }
269 break;
270
6e42e6c4 271 case 8:
8c266f0c 272 {
6e42e6c4
DB
273 for (i=0; i<dstW; i++) {
274 register int srcPos = filterPos[i];
275
276 vector unsigned char src_v0 = vec_ld(srcPos, src);
277 vector unsigned char src_v1, src_vF;
278 vector signed short src_v, filter_v;
279 vector signed int val_v, val_s;
280 if ((((int)src + srcPos)% 16) > 8) {
281 src_v1 = vec_ld(srcPos + 16, src);
282 }
283 src_vF = vec_perm(src_v0, src_v1, vec_lvsl(srcPos, src));
284
285 src_v = // vec_unpackh sign-extends...
286 (vector signed short)(vec_mergeh((vector unsigned char)vzero, src_vF));
287 filter_v = vec_ld(i << 4, filter);
8c266f0c
RD
288 // the 4 above is 3 (filterSize == 8) + 1 (sizeof(short) == 2)
289
6e42e6c4
DB
290 val_v = vec_msums(src_v, filter_v, (vector signed int)vzero);
291 val_s = vec_sums(val_v, vzero);
292 vec_st(val_s, 0, tempo);
43cbf8ad 293 dst[i] = FFMIN(tempo[3]>>7, (1<<15)-1);
6e42e6c4 294 }
8c266f0c
RD
295 }
296 break;
297
6e42e6c4 298 case 16:
8c266f0c 299 {
6e42e6c4
DB
300 for (i=0; i<dstW; i++) {
301 register int srcPos = filterPos[i];
8c266f0c 302
6e42e6c4
DB
303 vector unsigned char src_v0 = vec_ld(srcPos, src);
304 vector unsigned char src_v1 = vec_ld(srcPos + 16, src);
305 vector unsigned char src_vF = vec_perm(src_v0, src_v1, vec_lvsl(srcPos, src));
8c266f0c 306
6e42e6c4
DB
307 vector signed short src_vA = // vec_unpackh sign-extends...
308 (vector signed short)(vec_mergeh((vector unsigned char)vzero, src_vF));
309 vector signed short src_vB = // vec_unpackh sign-extends...
310 (vector signed short)(vec_mergel((vector unsigned char)vzero, src_vF));
8c266f0c 311
6e42e6c4
DB
312 vector signed short filter_v0 = vec_ld(i << 5, filter);
313 vector signed short filter_v1 = vec_ld((i << 5) + 16, filter);
314 // the 5 above are 4 (filterSize == 16) + 1 (sizeof(short) == 2)
8c266f0c 315
6e42e6c4
DB
316 vector signed int val_acc = vec_msums(src_vA, filter_v0, (vector signed int)vzero);
317 vector signed int val_v = vec_msums(src_vB, filter_v1, val_acc);
8c266f0c 318
6e42e6c4 319 vector signed int val_s = vec_sums(val_v, vzero);
8c266f0c 320
6e42e6c4 321 vec_st(val_s, 0, tempo);
43cbf8ad 322 dst[i] = FFMIN(tempo[3]>>7, (1<<15)-1);
6e42e6c4 323 }
8c266f0c
RD
324 }
325 break;
6a4970ab 326
6e42e6c4 327 default:
8c266f0c 328 {
6e42e6c4
DB
329 for (i=0; i<dstW; i++) {
330 register int j;
331 register int srcPos = filterPos[i];
8c266f0c 332
484267f3 333 vector signed int val_s, val_v = (vector signed int)vzero;
6e42e6c4 334 vector signed short filter_v0R = vec_ld(i * 2 * filterSize, filter);
8c266f0c
RD
335 vector unsigned char permF = vec_lvsl((i * 2 * filterSize), filter);
336
337 vector unsigned char src_v0 = vec_ld(srcPos, src);
338 vector unsigned char permS = vec_lvsl(srcPos, src);
339
340 for (j = 0 ; j < filterSize - 15; j += 16) {
6e42e6c4
DB
341 vector unsigned char src_v1 = vec_ld(srcPos + j + 16, src);
342 vector unsigned char src_vF = vec_perm(src_v0, src_v1, permS);
6a4970ab 343
6e42e6c4
DB
344 vector signed short src_vA = // vec_unpackh sign-extends...
345 (vector signed short)(vec_mergeh((vector unsigned char)vzero, src_vF));
346 vector signed short src_vB = // vec_unpackh sign-extends...
347 (vector signed short)(vec_mergel((vector unsigned char)vzero, src_vF));
6a4970ab 348
6e42e6c4
DB
349 vector signed short filter_v1R = vec_ld((i * 2 * filterSize) + (j * 2) + 16, filter);
350 vector signed short filter_v2R = vec_ld((i * 2 * filterSize) + (j * 2) + 32, filter);
351 vector signed short filter_v0 = vec_perm(filter_v0R, filter_v1R, permF);
352 vector signed short filter_v1 = vec_perm(filter_v1R, filter_v2R, permF);
6a4970ab 353
6e42e6c4
DB
354 vector signed int val_acc = vec_msums(src_vA, filter_v0, val_v);
355 val_v = vec_msums(src_vB, filter_v1, val_acc);
8c266f0c 356
6e42e6c4
DB
357 filter_v0R = filter_v2R;
358 src_v0 = src_v1;
8c266f0c
RD
359 }
360
8916b4b5 361 if (j < filterSize-7) {
6e42e6c4
DB
362 // loading src_v0 is useless, it's already done above
363 //vector unsigned char src_v0 = vec_ld(srcPos + j, src);
364 vector unsigned char src_v1, src_vF;
365 vector signed short src_v, filter_v1R, filter_v;
366 if ((((int)src + srcPos)% 16) > 8) {
367 src_v1 = vec_ld(srcPos + j + 16, src);
368 }
369 src_vF = vec_perm(src_v0, src_v1, permS);
370
371 src_v = // vec_unpackh sign-extends...
372 (vector signed short)(vec_mergeh((vector unsigned char)vzero, src_vF));
373 // loading filter_v0R is useless, it's already done above
374 //vector signed short filter_v0R = vec_ld((i * 2 * filterSize) + j, filter);
375 filter_v1R = vec_ld((i * 2 * filterSize) + (j * 2) + 16, filter);
376 filter_v = vec_perm(filter_v0R, filter_v1R, permF);
377
378 val_v = vec_msums(src_v, filter_v, val_v);
8c266f0c
RD
379 }
380
484267f3 381 val_s = vec_sums(val_v, vzero);
6a4970ab 382
8c266f0c 383 vec_st(val_s, 0, tempo);
43cbf8ad 384 dst[i] = FFMIN(tempo[3]>>7, (1<<15)-1);
6e42e6c4 385 }
6a4970ab 386
8c266f0c 387 }
6e42e6c4 388 }
8c266f0c 389}
b71cf33c
RD
390
391static inline int yv12toyuy2_unscaled_altivec(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
6e42e6c4
DB
392 int srcSliceH, uint8_t* dstParam[], int dstStride_a[]) {
393 uint8_t *dst=dstParam[0] + dstStride_a[0]*srcSliceY;
30c48a0a 394 // yv12toyuy2(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0], srcStride[1], dstStride[0]);
6e42e6c4
DB
395 uint8_t *ysrc = src[0];
396 uint8_t *usrc = src[1];
397 uint8_t *vsrc = src[2];
398 const int width = c->srcW;
399 const int height = srcSliceH;
400 const int lumStride = srcStride[0];
401 const int chromStride = srcStride[1];
402 const int dstStride = dstStride_a[0];
403 const vector unsigned char yperm = vec_lvsl(0, ysrc);
404 const int vertLumPerChroma = 2;
405 register unsigned int y;
406
407 if (width&15) {
30c48a0a 408 yv12toyuy2(ysrc, usrc, vsrc, dst, c->srcW, srcSliceH, lumStride, chromStride, dstStride);
6e42e6c4
DB
409 return srcSliceH;
410 }
6a4970ab 411
8a322796 412 /* This code assumes:
6e42e6c4
DB
413
414 1) dst is 16 bytes-aligned
415 2) dstStride is a multiple of 16
416 3) width is a multiple of 16
8a322796 417 4) lum & chrom stride are multiples of 8
6e42e6c4
DB
418 */
419
420 for (y=0; y<height; y++) {
421 int i;
422 for (i = 0; i < width - 31; i+= 32) {
423 const unsigned int j = i >> 1;
424 vector unsigned char v_yA = vec_ld(i, ysrc);
425 vector unsigned char v_yB = vec_ld(i + 16, ysrc);
426 vector unsigned char v_yC = vec_ld(i + 32, ysrc);
427 vector unsigned char v_y1 = vec_perm(v_yA, v_yB, yperm);
428 vector unsigned char v_y2 = vec_perm(v_yB, v_yC, yperm);
429 vector unsigned char v_uA = vec_ld(j, usrc);
430 vector unsigned char v_uB = vec_ld(j + 16, usrc);
431 vector unsigned char v_u = vec_perm(v_uA, v_uB, vec_lvsl(j, usrc));
432 vector unsigned char v_vA = vec_ld(j, vsrc);
433 vector unsigned char v_vB = vec_ld(j + 16, vsrc);
434 vector unsigned char v_v = vec_perm(v_vA, v_vB, vec_lvsl(j, vsrc));
435 vector unsigned char v_uv_a = vec_mergeh(v_u, v_v);
436 vector unsigned char v_uv_b = vec_mergel(v_u, v_v);
437 vector unsigned char v_yuy2_0 = vec_mergeh(v_y1, v_uv_a);
438 vector unsigned char v_yuy2_1 = vec_mergel(v_y1, v_uv_a);
439 vector unsigned char v_yuy2_2 = vec_mergeh(v_y2, v_uv_b);
440 vector unsigned char v_yuy2_3 = vec_mergel(v_y2, v_uv_b);
441 vec_st(v_yuy2_0, (i << 1), dst);
442 vec_st(v_yuy2_1, (i << 1) + 16, dst);
443 vec_st(v_yuy2_2, (i << 1) + 32, dst);
444 vec_st(v_yuy2_3, (i << 1) + 48, dst);
445 }
446 if (i < width) {
447 const unsigned int j = i >> 1;
448 vector unsigned char v_y1 = vec_ld(i, ysrc);
449 vector unsigned char v_u = vec_ld(j, usrc);
450 vector unsigned char v_v = vec_ld(j, vsrc);
451 vector unsigned char v_uv_a = vec_mergeh(v_u, v_v);
452 vector unsigned char v_yuy2_0 = vec_mergeh(v_y1, v_uv_a);
453 vector unsigned char v_yuy2_1 = vec_mergel(v_y1, v_uv_a);
454 vec_st(v_yuy2_0, (i << 1), dst);
455 vec_st(v_yuy2_1, (i << 1) + 16, dst);
456 }
8916b4b5 457 if ((y&(vertLumPerChroma-1)) == vertLumPerChroma-1) {
6e42e6c4
DB
458 usrc += chromStride;
459 vsrc += chromStride;
460 }
461 ysrc += lumStride;
462 dst += dstStride;
b71cf33c 463 }
6a4970ab 464
6e42e6c4 465 return srcSliceH;
b71cf33c
RD
466}
467
468static inline int yv12touyvy_unscaled_altivec(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
6e42e6c4
DB
469 int srcSliceH, uint8_t* dstParam[], int dstStride_a[]) {
470 uint8_t *dst=dstParam[0] + dstStride_a[0]*srcSliceY;
30c48a0a 471 // yv12toyuy2(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0], srcStride[1], dstStride[0]);
6e42e6c4
DB
472 uint8_t *ysrc = src[0];
473 uint8_t *usrc = src[1];
474 uint8_t *vsrc = src[2];
475 const int width = c->srcW;
476 const int height = srcSliceH;
477 const int lumStride = srcStride[0];
478 const int chromStride = srcStride[1];
479 const int dstStride = dstStride_a[0];
480 const int vertLumPerChroma = 2;
481 const vector unsigned char yperm = vec_lvsl(0, ysrc);
482 register unsigned int y;
483
484 if (width&15) {
30c48a0a 485 yv12touyvy(ysrc, usrc, vsrc, dst, c->srcW, srcSliceH, lumStride, chromStride, dstStride);
6e42e6c4
DB
486 return srcSliceH;
487 }
6a4970ab 488
8a322796 489 /* This code assumes:
6e42e6c4
DB
490
491 1) dst is 16 bytes-aligned
492 2) dstStride is a multiple of 16
493 3) width is a multiple of 16
8a322796 494 4) lum & chrom stride are multiples of 8
6e42e6c4
DB
495 */
496
497 for (y=0; y<height; y++) {
498 int i;
499 for (i = 0; i < width - 31; i+= 32) {
500 const unsigned int j = i >> 1;
501 vector unsigned char v_yA = vec_ld(i, ysrc);
502 vector unsigned char v_yB = vec_ld(i + 16, ysrc);
503 vector unsigned char v_yC = vec_ld(i + 32, ysrc);
504 vector unsigned char v_y1 = vec_perm(v_yA, v_yB, yperm);
505 vector unsigned char v_y2 = vec_perm(v_yB, v_yC, yperm);
506 vector unsigned char v_uA = vec_ld(j, usrc);
507 vector unsigned char v_uB = vec_ld(j + 16, usrc);
508 vector unsigned char v_u = vec_perm(v_uA, v_uB, vec_lvsl(j, usrc));
509 vector unsigned char v_vA = vec_ld(j, vsrc);
510 vector unsigned char v_vB = vec_ld(j + 16, vsrc);
511 vector unsigned char v_v = vec_perm(v_vA, v_vB, vec_lvsl(j, vsrc));
512 vector unsigned char v_uv_a = vec_mergeh(v_u, v_v);
513 vector unsigned char v_uv_b = vec_mergel(v_u, v_v);
514 vector unsigned char v_uyvy_0 = vec_mergeh(v_uv_a, v_y1);
515 vector unsigned char v_uyvy_1 = vec_mergel(v_uv_a, v_y1);
516 vector unsigned char v_uyvy_2 = vec_mergeh(v_uv_b, v_y2);
517 vector unsigned char v_uyvy_3 = vec_mergel(v_uv_b, v_y2);
518 vec_st(v_uyvy_0, (i << 1), dst);
519 vec_st(v_uyvy_1, (i << 1) + 16, dst);
520 vec_st(v_uyvy_2, (i << 1) + 32, dst);
521 vec_st(v_uyvy_3, (i << 1) + 48, dst);
522 }
523 if (i < width) {
524 const unsigned int j = i >> 1;
525 vector unsigned char v_y1 = vec_ld(i, ysrc);
526 vector unsigned char v_u = vec_ld(j, usrc);
527 vector unsigned char v_v = vec_ld(j, vsrc);
528 vector unsigned char v_uv_a = vec_mergeh(v_u, v_v);
529 vector unsigned char v_uyvy_0 = vec_mergeh(v_uv_a, v_y1);
530 vector unsigned char v_uyvy_1 = vec_mergel(v_uv_a, v_y1);
531 vec_st(v_uyvy_0, (i << 1), dst);
532 vec_st(v_uyvy_1, (i << 1) + 16, dst);
533 }
8916b4b5 534 if ((y&(vertLumPerChroma-1)) == vertLumPerChroma-1) {
6e42e6c4
DB
535 usrc += chromStride;
536 vsrc += chromStride;
537 }
538 ysrc += lumStride;
539 dst += dstStride;
b71cf33c 540 }
6e42e6c4 541 return srcSliceH;
b71cf33c 542}