3da2b0b2aaaa20529d9b918d9e6e7895cf9d7b22
[libav.git] / libswscale / rgb2rgb_template.c
1 /*
2 * software RGB to RGB converter
3 * pluralize by software PAL8 to RGB converter
4 * software YUV to YUV converter
5 * software YUV to RGB converter
6 * Written by Nick Kurshev.
7 * palette & YUV & runtime CPU stuff by Michael (michaelni@gmx.at)
8 * lot of big-endian byte order fixes by Alex Beregszaszi
9 *
10 * This file is part of Libav.
11 *
12 * Libav is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU Lesser General Public
14 * License as published by the Free Software Foundation; either
15 * version 2.1 of the License, or (at your option) any later version.
16 *
17 * Libav is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20 * Lesser General Public License for more details.
21 *
22 * You should have received a copy of the GNU Lesser General Public
23 * License along with Libav; if not, write to the Free Software
24 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
25 */
26
27 #include <stddef.h>
28
29 #include "libavutil/attributes.h"
30
31 static inline void rgb24tobgr32_c(const uint8_t *src, uint8_t *dst,
32 int src_size)
33 {
34 uint8_t *dest = dst;
35 const uint8_t *s = src;
36 const uint8_t *end = s + src_size;
37
38 while (s < end) {
39 #if HAVE_BIGENDIAN
40 /* RGB24 (= R, G, B) -> RGB32 (= A, B, G, R) */
41 *dest++ = 255;
42 *dest++ = s[2];
43 *dest++ = s[1];
44 *dest++ = s[0];
45 s += 3;
46 #else
47 *dest++ = *s++;
48 *dest++ = *s++;
49 *dest++ = *s++;
50 *dest++ = 255;
51 #endif
52 }
53 }
54
55 static inline void rgb32tobgr24_c(const uint8_t *src, uint8_t *dst,
56 int src_size)
57 {
58 uint8_t *dest = dst;
59 const uint8_t *s = src;
60 const uint8_t *end = s + src_size;
61
62 while (s < end) {
63 #if HAVE_BIGENDIAN
64 /* RGB32 (= A, B, G, R) -> RGB24 (= R, G, B) */
65 s++;
66 dest[2] = *s++;
67 dest[1] = *s++;
68 dest[0] = *s++;
69 dest += 3;
70 #else
71 *dest++ = *s++;
72 *dest++ = *s++;
73 *dest++ = *s++;
74 s++;
75 #endif
76 }
77 }
78
79 /*
80 * original by Strepto/Astral
81 * ported to gcc & bugfixed: A'rpi
82 * MMXEXT, 3DNOW optimization by Nick Kurshev
83 * 32-bit C version, and and&add trick by Michael Niedermayer
84 */
85 static inline void rgb15to16_c(const uint8_t *src, uint8_t *dst, int src_size)
86 {
87 register uint8_t *d = dst;
88 register const uint8_t *s = src;
89 register const uint8_t *end = s + src_size;
90 const uint8_t *mm_end = end - 3;
91
92 while (s < mm_end) {
93 register unsigned x = *((const uint32_t *)s);
94 *((uint32_t *)d) = (x & 0x7FFF7FFF) + (x & 0x7FE07FE0);
95 d += 4;
96 s += 4;
97 }
98 if (s < end) {
99 register unsigned short x = *((const uint16_t *)s);
100 *((uint16_t *)d) = (x & 0x7FFF) + (x & 0x7FE0);
101 }
102 }
103
104 static inline void rgb16to15_c(const uint8_t *src, uint8_t *dst, int src_size)
105 {
106 register uint8_t *d = dst;
107 register const uint8_t *s = src;
108 register const uint8_t *end = s + src_size;
109 const uint8_t *mm_end = end - 3;
110
111 while (s < mm_end) {
112 register uint32_t x = *((const uint32_t *)s);
113 *((uint32_t *)d) = ((x >> 1) & 0x7FE07FE0) | (x & 0x001F001F);
114 s += 4;
115 d += 4;
116 }
117 if (s < end) {
118 register uint16_t x = *((const uint16_t *)s);
119 *((uint16_t *)d) = ((x >> 1) & 0x7FE0) | (x & 0x001F);
120 }
121 }
122
123 static inline void rgb32to16_c(const uint8_t *src, uint8_t *dst, int src_size)
124 {
125 uint16_t *d = (uint16_t *)dst;
126 const uint8_t *s = src;
127 const uint8_t *end = s + src_size;
128
129 while (s < end) {
130 register int rgb = *(const uint32_t *)s;
131 s += 4;
132 *d++ = ((rgb & 0xFF) >> 3) +
133 ((rgb & 0xFC00) >> 5) +
134 ((rgb & 0xF80000) >> 8);
135 }
136 }
137
138 static inline void rgb32tobgr16_c(const uint8_t *src, uint8_t *dst,
139 int src_size)
140 {
141 uint16_t *d = (uint16_t *)dst;
142 const uint8_t *s = src;
143 const uint8_t *end = s + src_size;
144
145 while (s < end) {
146 register int rgb = *(const uint32_t *)s;
147 s += 4;
148 *d++ = ((rgb & 0xF8) << 8) +
149 ((rgb & 0xFC00) >> 5) +
150 ((rgb & 0xF80000) >> 19);
151 }
152 }
153
154 static inline void rgb32to15_c(const uint8_t *src, uint8_t *dst, int src_size)
155 {
156 uint16_t *d = (uint16_t *)dst;
157 const uint8_t *s = src;
158 const uint8_t *end = s + src_size;
159
160 while (s < end) {
161 register int rgb = *(const uint32_t *)s;
162 s += 4;
163 *d++ = ((rgb & 0xFF) >> 3) +
164 ((rgb & 0xF800) >> 6) +
165 ((rgb & 0xF80000) >> 9);
166 }
167 }
168
169 static inline void rgb32tobgr15_c(const uint8_t *src, uint8_t *dst,
170 int src_size)
171 {
172 uint16_t *d = (uint16_t *)dst;
173 const uint8_t *s = src;
174 const uint8_t *end = s + src_size;
175
176 while (s < end) {
177 register int rgb = *(const uint32_t *)s;
178 s += 4;
179 *d++ = ((rgb & 0xF8) << 7) +
180 ((rgb & 0xF800) >> 6) +
181 ((rgb & 0xF80000) >> 19);
182 }
183 }
184
185 static inline void rgb24tobgr16_c(const uint8_t *src, uint8_t *dst,
186 int src_size)
187 {
188 uint16_t *d = (uint16_t *)dst;
189 const uint8_t *s = src;
190 const uint8_t *end = s + src_size;
191
192 while (s < end) {
193 const int b = *s++;
194 const int g = *s++;
195 const int r = *s++;
196 *d++ = (b >> 3) | ((g & 0xFC) << 3) | ((r & 0xF8) << 8);
197 }
198 }
199
200 static inline void rgb24to16_c(const uint8_t *src, uint8_t *dst, int src_size)
201 {
202 uint16_t *d = (uint16_t *)dst;
203 const uint8_t *s = src;
204 const uint8_t *end = s + src_size;
205
206 while (s < end) {
207 const int r = *s++;
208 const int g = *s++;
209 const int b = *s++;
210 *d++ = (b >> 3) | ((g & 0xFC) << 3) | ((r & 0xF8) << 8);
211 }
212 }
213
214 static inline void rgb24tobgr15_c(const uint8_t *src, uint8_t *dst,
215 int src_size)
216 {
217 uint16_t *d = (uint16_t *)dst;
218 const uint8_t *s = src;
219 const uint8_t *end = s + src_size;
220
221 while (s < end) {
222 const int b = *s++;
223 const int g = *s++;
224 const int r = *s++;
225 *d++ = (b >> 3) | ((g & 0xF8) << 2) | ((r & 0xF8) << 7);
226 }
227 }
228
229 static inline void rgb24to15_c(const uint8_t *src, uint8_t *dst, int src_size)
230 {
231 uint16_t *d = (uint16_t *)dst;
232 const uint8_t *s = src;
233 const uint8_t *end = s + src_size;
234
235 while (s < end) {
236 const int r = *s++;
237 const int g = *s++;
238 const int b = *s++;
239 *d++ = (b >> 3) | ((g & 0xF8) << 2) | ((r & 0xF8) << 7);
240 }
241 }
242
243 /*
244 * I use less accurate approximation here by simply left-shifting the input
245 * value and filling the low order bits with zeroes. This method improves PNG
246 * compression but this scheme cannot reproduce white exactly, since it does
247 * not generate an all-ones maximum value; the net effect is to darken the
248 * image slightly.
249 *
250 * The better method should be "left bit replication":
251 *
252 * 4 3 2 1 0
253 * ---------
254 * 1 1 0 1 1
255 *
256 * 7 6 5 4 3 2 1 0
257 * ----------------
258 * 1 1 0 1 1 1 1 0
259 * |=======| |===|
260 * | leftmost bits repeated to fill open bits
261 * |
262 * original bits
263 */
264 static inline void rgb15tobgr24_c(const uint8_t *src, uint8_t *dst,
265 int src_size)
266 {
267 uint8_t *d = dst;
268 const uint16_t *s = (const uint16_t *)src;
269 const uint16_t *end = s + src_size / 2;
270
271 while (s < end) {
272 register uint16_t bgr = *s++;
273 *d++ = (bgr & 0x1F) << 3;
274 *d++ = (bgr & 0x3E0) >> 2;
275 *d++ = (bgr & 0x7C00) >> 7;
276 }
277 }
278
279 static inline void rgb16tobgr24_c(const uint8_t *src, uint8_t *dst,
280 int src_size)
281 {
282 uint8_t *d = (uint8_t *)dst;
283 const uint16_t *s = (const uint16_t *)src;
284 const uint16_t *end = s + src_size / 2;
285
286 while (s < end) {
287 register uint16_t bgr = *s++;
288 *d++ = (bgr & 0x1F) << 3;
289 *d++ = (bgr & 0x7E0) >> 3;
290 *d++ = (bgr & 0xF800) >> 8;
291 }
292 }
293
294 static inline void rgb15to32_c(const uint8_t *src, uint8_t *dst, int src_size)
295 {
296 uint8_t *d = dst;
297 const uint16_t *s = (const uint16_t *)src;
298 const uint16_t *end = s + src_size / 2;
299
300 while (s < end) {
301 register uint16_t bgr = *s++;
302 #if HAVE_BIGENDIAN
303 *d++ = 255;
304 *d++ = (bgr & 0x7C00) >> 7;
305 *d++ = (bgr & 0x3E0) >> 2;
306 *d++ = (bgr & 0x1F) << 3;
307 #else
308 *d++ = (bgr & 0x1F) << 3;
309 *d++ = (bgr & 0x3E0) >> 2;
310 *d++ = (bgr & 0x7C00) >> 7;
311 *d++ = 255;
312 #endif
313 }
314 }
315
316 static inline void rgb16to32_c(const uint8_t *src, uint8_t *dst, int src_size)
317 {
318 uint8_t *d = dst;
319 const uint16_t *s = (const uint16_t *)src;
320 const uint16_t *end = s + src_size / 2;
321
322 while (s < end) {
323 register uint16_t bgr = *s++;
324 #if HAVE_BIGENDIAN
325 *d++ = 255;
326 *d++ = (bgr & 0xF800) >> 8;
327 *d++ = (bgr & 0x7E0) >> 3;
328 *d++ = (bgr & 0x1F) << 3;
329 #else
330 *d++ = (bgr & 0x1F) << 3;
331 *d++ = (bgr & 0x7E0) >> 3;
332 *d++ = (bgr & 0xF800) >> 8;
333 *d++ = 255;
334 #endif
335 }
336 }
337
338 static inline void shuffle_bytes_2103_c(const uint8_t *src, uint8_t *dst,
339 int src_size)
340 {
341 int idx = 15 - src_size;
342 const uint8_t *s = src - idx;
343 uint8_t *d = dst - idx;
344
345 for (; idx < 15; idx += 4) {
346 register int v = *(const uint32_t *)&s[idx], g = v & 0xff00ff00;
347 v &= 0xff00ff;
348 *(uint32_t *)&d[idx] = (v >> 16) + g + (v << 16);
349 }
350 }
351
352 static inline void rgb24tobgr24_c(const uint8_t *src, uint8_t *dst, int src_size)
353 {
354 unsigned i;
355
356 for (i = 0; i < src_size; i += 3) {
357 register uint8_t x = src[i + 2];
358 dst[i + 1] = src[i + 1];
359 dst[i + 2] = src[i + 0];
360 dst[i + 0] = x;
361 }
362 }
363
364 static inline void yuvPlanartoyuy2_c(const uint8_t *ysrc, const uint8_t *usrc,
365 const uint8_t *vsrc, uint8_t *dst,
366 int width, int height,
367 int lumStride, int chromStride,
368 int dstStride, int vertLumPerChroma)
369 {
370 int y, i;
371 const int chromWidth = width >> 1;
372
373 for (y = 0; y < height; y++) {
374 #if HAVE_FAST_64BIT
375 uint64_t *ldst = (uint64_t *)dst;
376 const uint8_t *yc = ysrc, *uc = usrc, *vc = vsrc;
377 for (i = 0; i < chromWidth; i += 2) {
378 uint64_t k = yc[0] + (uc[0] << 8) +
379 (yc[1] << 16) + (vc[0] << 24);
380 uint64_t l = yc[2] + (uc[1] << 8) +
381 (yc[3] << 16) + (vc[1] << 24);
382 *ldst++ = k + (l << 32);
383 yc += 4;
384 uc += 2;
385 vc += 2;
386 }
387
388 #else
389 int *idst = (int32_t *)dst;
390 const uint8_t *yc = ysrc, *uc = usrc, *vc = vsrc;
391
392 for (i = 0; i < chromWidth; i++) {
393 #if HAVE_BIGENDIAN
394 *idst++ = (yc[0] << 24) + (uc[0] << 16) +
395 (yc[1] << 8) + (vc[0] << 0);
396 #else
397 *idst++ = yc[0] + (uc[0] << 8) +
398 (yc[1] << 16) + (vc[0] << 24);
399 #endif
400 yc += 2;
401 uc++;
402 vc++;
403 }
404 #endif
405 if ((y & (vertLumPerChroma - 1)) == vertLumPerChroma - 1) {
406 usrc += chromStride;
407 vsrc += chromStride;
408 }
409 ysrc += lumStride;
410 dst += dstStride;
411 }
412 }
413
414 /**
415 * Height should be a multiple of 2 and width should be a multiple of 16.
416 * (If this is a problem for anyone then tell me, and I will fix it.)
417 */
418 static inline void yv12toyuy2_c(const uint8_t *ysrc, const uint8_t *usrc,
419 const uint8_t *vsrc, uint8_t *dst,
420 int width, int height, int lumStride,
421 int chromStride, int dstStride)
422 {
423 //FIXME interpolate chroma
424 yuvPlanartoyuy2_c(ysrc, usrc, vsrc, dst, width, height, lumStride,
425 chromStride, dstStride, 2);
426 }
427
428 static inline void yuvPlanartouyvy_c(const uint8_t *ysrc, const uint8_t *usrc,
429 const uint8_t *vsrc, uint8_t *dst,
430 int width, int height,
431 int lumStride, int chromStride,
432 int dstStride, int vertLumPerChroma)
433 {
434 int y, i;
435 const int chromWidth = width >> 1;
436
437 for (y = 0; y < height; y++) {
438 #if HAVE_FAST_64BIT
439 uint64_t *ldst = (uint64_t *)dst;
440 const uint8_t *yc = ysrc, *uc = usrc, *vc = vsrc;
441 for (i = 0; i < chromWidth; i += 2) {
442 uint64_t k = uc[0] + (yc[0] << 8) +
443 (vc[0] << 16) + (yc[1] << 24);
444 uint64_t l = uc[1] + (yc[2] << 8) +
445 (vc[1] << 16) + (yc[3] << 24);
446 *ldst++ = k + (l << 32);
447 yc += 4;
448 uc += 2;
449 vc += 2;
450 }
451
452 #else
453 int *idst = (int32_t *)dst;
454 const uint8_t *yc = ysrc, *uc = usrc, *vc = vsrc;
455
456 for (i = 0; i < chromWidth; i++) {
457 #if HAVE_BIGENDIAN
458 *idst++ = (uc[0] << 24) + (yc[0] << 16) +
459 (vc[0] << 8) + (yc[1] << 0);
460 #else
461 *idst++ = uc[0] + (yc[0] << 8) +
462 (vc[0] << 16) + (yc[1] << 24);
463 #endif
464 yc += 2;
465 uc++;
466 vc++;
467 }
468 #endif
469 if ((y & (vertLumPerChroma - 1)) == vertLumPerChroma - 1) {
470 usrc += chromStride;
471 vsrc += chromStride;
472 }
473 ysrc += lumStride;
474 dst += dstStride;
475 }
476 }
477
478 /**
479 * Height should be a multiple of 2 and width should be a multiple of 16
480 * (If this is a problem for anyone then tell me, and I will fix it.)
481 */
482 static inline void yv12touyvy_c(const uint8_t *ysrc, const uint8_t *usrc,
483 const uint8_t *vsrc, uint8_t *dst,
484 int width, int height, int lumStride,
485 int chromStride, int dstStride)
486 {
487 //FIXME interpolate chroma
488 yuvPlanartouyvy_c(ysrc, usrc, vsrc, dst, width, height, lumStride,
489 chromStride, dstStride, 2);
490 }
491
492 /**
493 * Width should be a multiple of 16.
494 */
495 static inline void yuv422ptouyvy_c(const uint8_t *ysrc, const uint8_t *usrc,
496 const uint8_t *vsrc, uint8_t *dst,
497 int width, int height, int lumStride,
498 int chromStride, int dstStride)
499 {
500 yuvPlanartouyvy_c(ysrc, usrc, vsrc, dst, width, height, lumStride,
501 chromStride, dstStride, 1);
502 }
503
504 /**
505 * Width should be a multiple of 16.
506 */
507 static inline void yuv422ptoyuy2_c(const uint8_t *ysrc, const uint8_t *usrc,
508 const uint8_t *vsrc, uint8_t *dst,
509 int width, int height, int lumStride,
510 int chromStride, int dstStride)
511 {
512 yuvPlanartoyuy2_c(ysrc, usrc, vsrc, dst, width, height, lumStride,
513 chromStride, dstStride, 1);
514 }
515
516 /**
517 * Height should be a multiple of 2 and width should be a multiple of 16.
518 * (If this is a problem for anyone then tell me, and I will fix it.)
519 */
520 static inline void yuy2toyv12_c(const uint8_t *src, uint8_t *ydst,
521 uint8_t *udst, uint8_t *vdst,
522 int width, int height, int lumStride,
523 int chromStride, int srcStride)
524 {
525 int y;
526 const int chromWidth = width >> 1;
527
528 for (y = 0; y < height; y += 2) {
529 int i;
530 for (i = 0; i < chromWidth; i++) {
531 ydst[2 * i + 0] = src[4 * i + 0];
532 udst[i] = src[4 * i + 1];
533 ydst[2 * i + 1] = src[4 * i + 2];
534 vdst[i] = src[4 * i + 3];
535 }
536 ydst += lumStride;
537 src += srcStride;
538
539 for (i = 0; i < chromWidth; i++) {
540 ydst[2 * i + 0] = src[4 * i + 0];
541 ydst[2 * i + 1] = src[4 * i + 2];
542 }
543 udst += chromStride;
544 vdst += chromStride;
545 ydst += lumStride;
546 src += srcStride;
547 }
548 }
549
550 static inline void planar2x_c(const uint8_t *src, uint8_t *dst, int srcWidth,
551 int srcHeight, int srcStride, int dstStride)
552 {
553 int x, y;
554
555 dst[0] = src[0];
556
557 // first line
558 for (x = 0; x < srcWidth - 1; x++) {
559 dst[2 * x + 1] = (3 * src[x] + src[x + 1]) >> 2;
560 dst[2 * x + 2] = (src[x] + 3 * src[x + 1]) >> 2;
561 }
562 dst[2 * srcWidth - 1] = src[srcWidth - 1];
563
564 dst += dstStride;
565
566 for (y = 1; y < srcHeight; y++) {
567 const int mmxSize = 1;
568
569 dst[0] = (src[0] * 3 + src[srcStride]) >> 2;
570 dst[dstStride] = (src[0] + 3 * src[srcStride]) >> 2;
571
572 for (x = mmxSize - 1; x < srcWidth - 1; x++) {
573 dst[2 * x + 1] = (src[x + 0] * 3 + src[x + srcStride + 1]) >> 2;
574 dst[2 * x + dstStride + 2] = (src[x + 0] + 3 * src[x + srcStride + 1]) >> 2;
575 dst[2 * x + dstStride + 1] = (src[x + 1] + 3 * src[x + srcStride]) >> 2;
576 dst[2 * x + 2] = (src[x + 1] * 3 + src[x + srcStride]) >> 2;
577 }
578 dst[srcWidth * 2 - 1] = (src[srcWidth - 1] * 3 + src[srcWidth - 1 + srcStride]) >> 2;
579 dst[srcWidth * 2 - 1 + dstStride] = (src[srcWidth - 1] + 3 * src[srcWidth - 1 + srcStride]) >> 2;
580
581 dst += dstStride * 2;
582 src += srcStride;
583 }
584
585 // last line
586 dst[0] = src[0];
587
588 for (x = 0; x < srcWidth - 1; x++) {
589 dst[2 * x + 1] = (src[x] * 3 + src[x + 1]) >> 2;
590 dst[2 * x + 2] = (src[x] + 3 * src[x + 1]) >> 2;
591 }
592 dst[2 * srcWidth - 1] = src[srcWidth - 1];
593 }
594
595 /**
596 * Height should be a multiple of 2 and width should be a multiple of 16.
597 * (If this is a problem for anyone then tell me, and I will fix it.)
598 * Chrominance data is only taken from every second line, others are ignored.
599 * FIXME: Write HQ version.
600 */
601 static inline void uyvytoyv12_c(const uint8_t *src, uint8_t *ydst,
602 uint8_t *udst, uint8_t *vdst,
603 int width, int height, int lumStride,
604 int chromStride, int srcStride)
605 {
606 int y;
607 const int chromWidth = width >> 1;
608
609 for (y = 0; y < height; y += 2) {
610 int i;
611 for (i = 0; i < chromWidth; i++) {
612 udst[i] = src[4 * i + 0];
613 ydst[2 * i + 0] = src[4 * i + 1];
614 vdst[i] = src[4 * i + 2];
615 ydst[2 * i + 1] = src[4 * i + 3];
616 }
617 ydst += lumStride;
618 src += srcStride;
619
620 for (i = 0; i < chromWidth; i++) {
621 ydst[2 * i + 0] = src[4 * i + 1];
622 ydst[2 * i + 1] = src[4 * i + 3];
623 }
624 udst += chromStride;
625 vdst += chromStride;
626 ydst += lumStride;
627 src += srcStride;
628 }
629 }
630
631 /**
632 * Height should be a multiple of 2 and width should be a multiple of 2.
633 * (If this is a problem for anyone then tell me, and I will fix it.)
634 * Chrominance data is only taken from every second line,
635 * others are ignored in the C version.
636 * FIXME: Write HQ version.
637 */
638 void rgb24toyv12_c(const uint8_t *src, uint8_t *ydst, uint8_t *udst,
639 uint8_t *vdst, int width, int height, int lumStride,
640 int chromStride, int srcStride)
641 {
642 int y;
643 const int chromWidth = width >> 1;
644
645 for (y = 0; y < height; y += 2) {
646 int i;
647 for (i = 0; i < chromWidth; i++) {
648 unsigned int b = src[6 * i + 0];
649 unsigned int g = src[6 * i + 1];
650 unsigned int r = src[6 * i + 2];
651
652 unsigned int Y = ((RY * r + GY * g + BY * b) >> RGB2YUV_SHIFT) + 16;
653 unsigned int V = ((RV * r + GV * g + BV * b) >> RGB2YUV_SHIFT) + 128;
654 unsigned int U = ((RU * r + GU * g + BU * b) >> RGB2YUV_SHIFT) + 128;
655
656 udst[i] = U;
657 vdst[i] = V;
658 ydst[2 * i] = Y;
659
660 b = src[6 * i + 3];
661 g = src[6 * i + 4];
662 r = src[6 * i + 5];
663
664 Y = ((RY * r + GY * g + BY * b) >> RGB2YUV_SHIFT) + 16;
665 ydst[2 * i + 1] = Y;
666 }
667 ydst += lumStride;
668 src += srcStride;
669
670 for (i = 0; i < chromWidth; i++) {
671 unsigned int b = src[6 * i + 0];
672 unsigned int g = src[6 * i + 1];
673 unsigned int r = src[6 * i + 2];
674
675 unsigned int Y = ((RY * r + GY * g + BY * b) >> RGB2YUV_SHIFT) + 16;
676
677 ydst[2 * i] = Y;
678
679 b = src[6 * i + 3];
680 g = src[6 * i + 4];
681 r = src[6 * i + 5];
682
683 Y = ((RY * r + GY * g + BY * b) >> RGB2YUV_SHIFT) + 16;
684 ydst[2 * i + 1] = Y;
685 }
686 udst += chromStride;
687 vdst += chromStride;
688 ydst += lumStride;
689 src += srcStride;
690 }
691 }
692
693 static void interleaveBytes_c(const uint8_t *src1, const uint8_t *src2,
694 uint8_t *dest, int width, int height,
695 int src1Stride, int src2Stride, int dstStride)
696 {
697 int h;
698
699 for (h = 0; h < height; h++) {
700 int w;
701 for (w = 0; w < width; w++) {
702 dest[2 * w + 0] = src1[w];
703 dest[2 * w + 1] = src2[w];
704 }
705 dest += dstStride;
706 src1 += src1Stride;
707 src2 += src2Stride;
708 }
709 }
710
711 static inline void vu9_to_vu12_c(const uint8_t *src1, const uint8_t *src2,
712 uint8_t *dst1, uint8_t *dst2,
713 int width, int height,
714 int srcStride1, int srcStride2,
715 int dstStride1, int dstStride2)
716 {
717 int x, y;
718 int w = width / 2;
719 int h = height / 2;
720
721 for (y = 0; y < h; y++) {
722 const uint8_t *s1 = src1 + srcStride1 * (y >> 1);
723 uint8_t *d = dst1 + dstStride1 * y;
724 for (x = 0; x < w; x++)
725 d[2 * x] = d[2 * x + 1] = s1[x];
726 }
727 for (y = 0; y < h; y++) {
728 const uint8_t *s2 = src2 + srcStride2 * (y >> 1);
729 uint8_t *d = dst2 + dstStride2 * y;
730 for (x = 0; x < w; x++)
731 d[2 * x] = d[2 * x + 1] = s2[x];
732 }
733 }
734
735 static inline void yvu9_to_yuy2_c(const uint8_t *src1, const uint8_t *src2,
736 const uint8_t *src3, uint8_t *dst,
737 int width, int height,
738 int srcStride1, int srcStride2,
739 int srcStride3, int dstStride)
740 {
741 int x, y;
742 int w = width / 2;
743 int h = height;
744
745 for (y = 0; y < h; y++) {
746 const uint8_t *yp = src1 + srcStride1 * y;
747 const uint8_t *up = src2 + srcStride2 * (y >> 2);
748 const uint8_t *vp = src3 + srcStride3 * (y >> 2);
749 uint8_t *d = dst + dstStride * y;
750 for (x = 0; x < w; x++) {
751 const int x2 = x << 2;
752 d[8 * x + 0] = yp[x2];
753 d[8 * x + 1] = up[x];
754 d[8 * x + 2] = yp[x2 + 1];
755 d[8 * x + 3] = vp[x];
756 d[8 * x + 4] = yp[x2 + 2];
757 d[8 * x + 5] = up[x];
758 d[8 * x + 6] = yp[x2 + 3];
759 d[8 * x + 7] = vp[x];
760 }
761 }
762 }
763
764 static void extract_even_c(const uint8_t *src, uint8_t *dst, int count)
765 {
766 dst += count;
767 src += count * 2;
768 count = -count;
769 while (count < 0) {
770 dst[count] = src[2 * count];
771 count++;
772 }
773 }
774
775 static void extract_even2_c(const uint8_t *src, uint8_t *dst0, uint8_t *dst1,
776 int count)
777 {
778 dst0 += count;
779 dst1 += count;
780 src += count * 4;
781 count = -count;
782 while (count < 0) {
783 dst0[count] = src[4 * count + 0];
784 dst1[count] = src[4 * count + 2];
785 count++;
786 }
787 }
788
789 static void extract_even2avg_c(const uint8_t *src0, const uint8_t *src1,
790 uint8_t *dst0, uint8_t *dst1, int count)
791 {
792 dst0 += count;
793 dst1 += count;
794 src0 += count * 4;
795 src1 += count * 4;
796 count = -count;
797 while (count < 0) {
798 dst0[count] = (src0[4 * count + 0] + src1[4 * count + 0]) >> 1;
799 dst1[count] = (src0[4 * count + 2] + src1[4 * count + 2]) >> 1;
800 count++;
801 }
802 }
803
804 static void extract_odd2_c(const uint8_t *src, uint8_t *dst0, uint8_t *dst1,
805 int count)
806 {
807 dst0 += count;
808 dst1 += count;
809 src += count * 4;
810 count = -count;
811 src++;
812 while (count < 0) {
813 dst0[count] = src[4 * count + 0];
814 dst1[count] = src[4 * count + 2];
815 count++;
816 }
817 }
818
819 static void extract_odd2avg_c(const uint8_t *src0, const uint8_t *src1,
820 uint8_t *dst0, uint8_t *dst1, int count)
821 {
822 dst0 += count;
823 dst1 += count;
824 src0 += count * 4;
825 src1 += count * 4;
826 count = -count;
827 src0++;
828 src1++;
829 while (count < 0) {
830 dst0[count] = (src0[4 * count + 0] + src1[4 * count + 0]) >> 1;
831 dst1[count] = (src0[4 * count + 2] + src1[4 * count + 2]) >> 1;
832 count++;
833 }
834 }
835
836 static void yuyvtoyuv420_c(uint8_t *ydst, uint8_t *udst, uint8_t *vdst,
837 const uint8_t *src, int width, int height,
838 int lumStride, int chromStride, int srcStride)
839 {
840 int y;
841 const int chromWidth = -((-width) >> 1);
842
843 for (y = 0; y < height; y++) {
844 extract_even_c(src, ydst, width);
845 if (y & 1) {
846 extract_odd2avg_c(src - srcStride, src, udst, vdst, chromWidth);
847 udst += chromStride;
848 vdst += chromStride;
849 }
850
851 src += srcStride;
852 ydst += lumStride;
853 }
854 }
855
856 static void yuyvtoyuv422_c(uint8_t *ydst, uint8_t *udst, uint8_t *vdst,
857 const uint8_t *src, int width, int height,
858 int lumStride, int chromStride, int srcStride)
859 {
860 int y;
861 const int chromWidth = -((-width) >> 1);
862
863 for (y = 0; y < height; y++) {
864 extract_even_c(src, ydst, width);
865 extract_odd2_c(src, udst, vdst, chromWidth);
866
867 src += srcStride;
868 ydst += lumStride;
869 udst += chromStride;
870 vdst += chromStride;
871 }
872 }
873
874 static void uyvytoyuv420_c(uint8_t *ydst, uint8_t *udst, uint8_t *vdst,
875 const uint8_t *src, int width, int height,
876 int lumStride, int chromStride, int srcStride)
877 {
878 int y;
879 const int chromWidth = -((-width) >> 1);
880
881 for (y = 0; y < height; y++) {
882 extract_even_c(src + 1, ydst, width);
883 if (y & 1) {
884 extract_even2avg_c(src - srcStride, src, udst, vdst, chromWidth);
885 udst += chromStride;
886 vdst += chromStride;
887 }
888
889 src += srcStride;
890 ydst += lumStride;
891 }
892 }
893
894 static void uyvytoyuv422_c(uint8_t *ydst, uint8_t *udst, uint8_t *vdst,
895 const uint8_t *src, int width, int height,
896 int lumStride, int chromStride, int srcStride)
897 {
898 int y;
899 const int chromWidth = -((-width) >> 1);
900
901 for (y = 0; y < height; y++) {
902 extract_even_c(src + 1, ydst, width);
903 extract_even2_c(src, udst, vdst, chromWidth);
904
905 src += srcStride;
906 ydst += lumStride;
907 udst += chromStride;
908 vdst += chromStride;
909 }
910 }
911
912 static av_cold void rgb2rgb_init_c(void)
913 {
914 rgb15to16 = rgb15to16_c;
915 rgb15tobgr24 = rgb15tobgr24_c;
916 rgb15to32 = rgb15to32_c;
917 rgb16tobgr24 = rgb16tobgr24_c;
918 rgb16to32 = rgb16to32_c;
919 rgb16to15 = rgb16to15_c;
920 rgb24tobgr16 = rgb24tobgr16_c;
921 rgb24tobgr15 = rgb24tobgr15_c;
922 rgb24tobgr32 = rgb24tobgr32_c;
923 rgb32to16 = rgb32to16_c;
924 rgb32to15 = rgb32to15_c;
925 rgb32tobgr24 = rgb32tobgr24_c;
926 rgb24to15 = rgb24to15_c;
927 rgb24to16 = rgb24to16_c;
928 rgb24tobgr24 = rgb24tobgr24_c;
929 shuffle_bytes_2103 = shuffle_bytes_2103_c;
930 rgb32tobgr16 = rgb32tobgr16_c;
931 rgb32tobgr15 = rgb32tobgr15_c;
932 yv12toyuy2 = yv12toyuy2_c;
933 yv12touyvy = yv12touyvy_c;
934 yuv422ptoyuy2 = yuv422ptoyuy2_c;
935 yuv422ptouyvy = yuv422ptouyvy_c;
936 yuy2toyv12 = yuy2toyv12_c;
937 planar2x = planar2x_c;
938 rgb24toyv12 = rgb24toyv12_c;
939 interleaveBytes = interleaveBytes_c;
940 vu9_to_vu12 = vu9_to_vu12_c;
941 yvu9_to_yuy2 = yvu9_to_yuy2_c;
942
943 uyvytoyuv420 = uyvytoyuv420_c;
944 uyvytoyuv422 = uyvytoyuv422_c;
945 yuyvtoyuv420 = yuyvtoyuv420_c;
946 yuyvtoyuv422 = yuyvtoyuv422_c;
947 }