2 * software YUV to RGB converter
4 * Copyright (C) 2009 Konstantin Shishkov
6 * 1,4,8bpp support and context / deglobalize stuff
7 * by Michael Niedermayer (michaelni@gmx.at)
9 * This file is part of FFmpeg.
11 * FFmpeg is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU Lesser General Public
13 * License as published by the Free Software Foundation; either
14 * version 2.1 of the License, or (at your option) any later version.
16 * FFmpeg is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 * Lesser General Public License for more details.
21 * You should have received a copy of the GNU Lesser General Public
22 * License along with FFmpeg; if not, write to the Free Software
23 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
30 #include "libavutil/cpu.h"
31 #include "libavutil/bswap.h"
35 #include "swscale_internal.h"
36 #include "libavutil/pixdesc.h"
38 /* Color space conversion coefficients for YCbCr -> RGB mapping.
40 * Entries are {crv, cbu, cgu, cgv}
42 * crv = (255 / 224) * 65536 * (1 - cr) / 0.5
43 * cbu = (255 / 224) * 65536 * (1 - cb) / 0.5
44 * cgu = (255 / 224) * 65536 * (cb / cg) * (1 - cb) / 0.5
45 * cgv = (255 / 224) * 65536 * (cr / cg) * (1 - cr) / 0.5
47 * where Y = cr * R + cg * G + cb * B and cr + cg + cb = 1.
49 const int32_t ff_yuv2rgb_coeffs[8][4] = {
50 { 117504, 138453, 13954, 34903 }, /* no sequence_display_extension */
51 { 117504, 138453, 13954, 34903 }, /* ITU-R Rec. 709 (1990) */
52 { 104597, 132201, 25675, 53279 }, /* unspecified */
53 { 104597, 132201, 25675, 53279 }, /* reserved */
54 { 104448, 132798, 24759, 53109 }, /* FCC */
55 { 104597, 132201, 25675, 53279 }, /* ITU-R Rec. 624-4 System B, G */
56 { 104597, 132201, 25675, 53279 }, /* SMPTE 170M */
57 { 117579, 136230, 16907, 35559 } /* SMPTE 240M (1987) */
60 const int *sws_getCoefficients(int colorspace)
62 if (colorspace > 7 || colorspace < 0)
63 colorspace = SWS_CS_DEFAULT;
64 return ff_yuv2rgb_coeffs[colorspace];
67 #define LOADCHROMA(i) \
70 r = (void *)c->table_rV[V+YUVRGB_TABLE_HEADROOM]; \
71 g = (void *)(c->table_gU[U+YUVRGB_TABLE_HEADROOM] + c->table_gV[V+YUVRGB_TABLE_HEADROOM]); \
72 b = (void *)c->table_bU[U+YUVRGB_TABLE_HEADROOM];
74 #define PUTRGB(dst, src, i) \
76 dst[2 * i] = r[Y] + g[Y] + b[Y]; \
78 dst[2 * i + 1] = r[Y] + g[Y] + b[Y];
80 #define PUTRGB24(dst, src, i) \
82 dst[6 * i + 0] = r[Y]; \
83 dst[6 * i + 1] = g[Y]; \
84 dst[6 * i + 2] = b[Y]; \
86 dst[6 * i + 3] = r[Y]; \
87 dst[6 * i + 4] = g[Y]; \
88 dst[6 * i + 5] = b[Y];
90 #define PUTBGR24(dst, src, i) \
92 dst[6 * i + 0] = b[Y]; \
93 dst[6 * i + 1] = g[Y]; \
94 dst[6 * i + 2] = r[Y]; \
96 dst[6 * i + 3] = b[Y]; \
97 dst[6 * i + 4] = g[Y]; \
98 dst[6 * i + 5] = r[Y];
100 #define PUTRGBA(dst, ysrc, asrc, i, s) \
102 dst[2 * i] = r[Y] + g[Y] + b[Y] + (asrc[2 * i] << s); \
103 Y = ysrc[2 * i + 1]; \
104 dst[2 * i + 1] = r[Y] + g[Y] + b[Y] + (asrc[2 * i + 1] << s);
106 #define PUTRGB48(dst, src, i) \
108 dst[12 * i + 0] = dst[12 * i + 1] = r[Y]; \
109 dst[12 * i + 2] = dst[12 * i + 3] = g[Y]; \
110 dst[12 * i + 4] = dst[12 * i + 5] = b[Y]; \
111 Y = src[ 2 * i + 1]; \
112 dst[12 * i + 6] = dst[12 * i + 7] = r[Y]; \
113 dst[12 * i + 8] = dst[12 * i + 9] = g[Y]; \
114 dst[12 * i + 10] = dst[12 * i + 11] = b[Y];
116 #define PUTBGR48(dst, src, i) \
118 dst[12 * i + 0] = dst[12 * i + 1] = b[Y]; \
119 dst[12 * i + 2] = dst[12 * i + 3] = g[Y]; \
120 dst[12 * i + 4] = dst[12 * i + 5] = r[Y]; \
121 Y = src[2 * i + 1]; \
122 dst[12 * i + 6] = dst[12 * i + 7] = b[Y]; \
123 dst[12 * i + 8] = dst[12 * i + 9] = g[Y]; \
124 dst[12 * i + 10] = dst[12 * i + 11] = r[Y];
126 #define YUV2RGBFUNC(func_name, dst_type, alpha) \
127 static int func_name(SwsContext *c, const uint8_t *src[], \
128 int srcStride[], int srcSliceY, int srcSliceH, \
129 uint8_t *dst[], int dstStride[]) \
133 if (!alpha && c->srcFormat == AV_PIX_FMT_YUV422P) { \
137 for (y = 0; y < srcSliceH; y += 2) { \
139 (dst_type *)(dst[0] + (y + srcSliceY) * dstStride[0]); \
141 (dst_type *)(dst[0] + (y + srcSliceY + 1) * dstStride[0]); \
142 dst_type av_unused *r, *g, *b; \
143 const uint8_t *py_1 = src[0] + y * srcStride[0]; \
144 const uint8_t *py_2 = py_1 + srcStride[0]; \
145 const uint8_t *pu = src[1] + (y >> 1) * srcStride[1]; \
146 const uint8_t *pv = src[2] + (y >> 1) * srcStride[2]; \
147 const uint8_t av_unused *pa_1, *pa_2; \
148 unsigned int h_size = c->dstW >> 3; \
150 pa_1 = src[3] + y * srcStride[3]; \
151 pa_2 = pa_1 + srcStride[3]; \
154 int av_unused U, V, Y; \
156 #define ENDYUV2RGBLINE(dst_delta, ss) \
161 dst_1 += dst_delta >> ss; \
162 dst_2 += dst_delta >> ss; \
164 if (c->dstW & (4 >> ss)) { \
165 int av_unused Y, U, V; \
167 #define ENDYUV2RGBFUNC() \
173 #define CLOSEYUV2RGBFUNC(dst_delta) \
174 ENDYUV2RGBLINE(dst_delta, 0) \
177 YUV2RGBFUNC(yuv2rgb_c_48, uint8_t, 0)
179 PUTRGB48(dst_1, py_1, 0);
180 PUTRGB48(dst_2, py_2, 0);
183 PUTRGB48(dst_2, py_2, 1);
184 PUTRGB48(dst_1, py_1, 1);
187 PUTRGB48(dst_1, py_1, 2);
188 PUTRGB48(dst_2, py_2, 2);
191 PUTRGB48(dst_2, py_2, 3);
192 PUTRGB48(dst_1, py_1, 3);
193 ENDYUV2RGBLINE(48, 0)
195 PUTRGB48(dst_1, py_1, 0);
196 PUTRGB48(dst_2, py_2, 0);
199 PUTRGB48(dst_2, py_2, 1);
200 PUTRGB48(dst_1, py_1, 1);
201 ENDYUV2RGBLINE(48, 1)
203 PUTRGB48(dst_1, py_1, 0);
204 PUTRGB48(dst_2, py_2, 0);
207 YUV2RGBFUNC(yuv2rgb_c_bgr48, uint8_t, 0)
209 PUTBGR48(dst_1, py_1, 0);
210 PUTBGR48(dst_2, py_2, 0);
213 PUTBGR48(dst_2, py_2, 1);
214 PUTBGR48(dst_1, py_1, 1);
217 PUTBGR48(dst_1, py_1, 2);
218 PUTBGR48(dst_2, py_2, 2);
221 PUTBGR48(dst_2, py_2, 3);
222 PUTBGR48(dst_1, py_1, 3);
223 ENDYUV2RGBLINE(48, 0)
225 PUTBGR48(dst_1, py_1, 0);
226 PUTBGR48(dst_2, py_2, 0);
229 PUTBGR48(dst_2, py_2, 1);
230 PUTBGR48(dst_1, py_1, 1);
231 ENDYUV2RGBLINE(48, 1)
233 PUTBGR48(dst_1, py_1, 0);
234 PUTBGR48(dst_2, py_2, 0);
237 YUV2RGBFUNC(yuv2rgb_c_32, uint32_t, 0)
239 PUTRGB(dst_1, py_1, 0);
240 PUTRGB(dst_2, py_2, 0);
243 PUTRGB(dst_2, py_2, 1);
244 PUTRGB(dst_1, py_1, 1);
247 PUTRGB(dst_1, py_1, 2);
248 PUTRGB(dst_2, py_2, 2);
251 PUTRGB(dst_2, py_2, 3);
252 PUTRGB(dst_1, py_1, 3);
255 PUTRGB(dst_1, py_1, 0);
256 PUTRGB(dst_2, py_2, 0);
259 PUTRGB(dst_2, py_2, 1);
260 PUTRGB(dst_1, py_1, 1);
263 PUTRGB(dst_1, py_1, 0);
264 PUTRGB(dst_2, py_2, 0);
267 YUV2RGBFUNC(yuva2rgba_c, uint32_t, 1)
269 PUTRGBA(dst_1, py_1, pa_1, 0, 24);
270 PUTRGBA(dst_2, py_2, pa_2, 0, 24);
273 PUTRGBA(dst_2, py_2, pa_2, 1, 24);
274 PUTRGBA(dst_1, py_1, pa_1, 1, 24);
277 PUTRGBA(dst_1, py_1, pa_1, 2, 24);
278 PUTRGBA(dst_2, py_2, pa_2, 2, 24);
281 PUTRGBA(dst_2, py_2, pa_2, 3, 24);
282 PUTRGBA(dst_1, py_1, pa_1, 3, 24);
287 PUTRGBA(dst_1, py_1, pa_1, 0, 24);
288 PUTRGBA(dst_2, py_2, pa_2, 0, 24);
291 PUTRGBA(dst_2, py_2, pa_2, 1, 24);
292 PUTRGBA(dst_1, py_1, pa_1, 1, 24);
297 PUTRGBA(dst_1, py_1, pa_1, 0, 24);
298 PUTRGBA(dst_2, py_2, pa_2, 0, 24);
301 YUV2RGBFUNC(yuva2argb_c, uint32_t, 1)
303 PUTRGBA(dst_1, py_1, pa_1, 0, 0);
304 PUTRGBA(dst_2, py_2, pa_2, 0, 0);
307 PUTRGBA(dst_2, py_2, pa_2, 1, 0);
308 PUTRGBA(dst_1, py_1, pa_1, 1, 0);
311 PUTRGBA(dst_1, py_1, pa_1, 2, 0);
312 PUTRGBA(dst_2, py_2, pa_2, 2, 0);
315 PUTRGBA(dst_2, py_2, pa_2, 3, 0);
316 PUTRGBA(dst_1, py_1, pa_1, 3, 0);
321 PUTRGBA(dst_1, py_1, pa_1, 0, 0);
322 PUTRGBA(dst_2, py_2, pa_2, 0, 0);
325 PUTRGBA(dst_2, py_2, pa_2, 1, 0);
326 PUTRGBA(dst_1, py_1, pa_1, 1, 0);
331 PUTRGBA(dst_1, py_1, pa_1, 0, 0);
332 PUTRGBA(dst_2, py_2, pa_2, 0, 0);
335 YUV2RGBFUNC(yuv2rgb_c_24_rgb, uint8_t, 0)
337 PUTRGB24(dst_1, py_1, 0);
338 PUTRGB24(dst_2, py_2, 0);
341 PUTRGB24(dst_2, py_2, 1);
342 PUTRGB24(dst_1, py_1, 1);
345 PUTRGB24(dst_1, py_1, 2);
346 PUTRGB24(dst_2, py_2, 2);
349 PUTRGB24(dst_2, py_2, 3);
350 PUTRGB24(dst_1, py_1, 3);
351 ENDYUV2RGBLINE(24, 0)
353 PUTRGB24(dst_1, py_1, 0);
354 PUTRGB24(dst_2, py_2, 0);
357 PUTRGB24(dst_2, py_2, 1);
358 PUTRGB24(dst_1, py_1, 1);
359 ENDYUV2RGBLINE(24, 1)
361 PUTRGB24(dst_1, py_1, 0);
362 PUTRGB24(dst_2, py_2, 0);
365 // only trivial mods from yuv2rgb_c_24_rgb
366 YUV2RGBFUNC(yuv2rgb_c_24_bgr, uint8_t, 0)
368 PUTBGR24(dst_1, py_1, 0);
369 PUTBGR24(dst_2, py_2, 0);
372 PUTBGR24(dst_2, py_2, 1);
373 PUTBGR24(dst_1, py_1, 1);
376 PUTBGR24(dst_1, py_1, 2);
377 PUTBGR24(dst_2, py_2, 2);
380 PUTBGR24(dst_2, py_2, 3);
381 PUTBGR24(dst_1, py_1, 3);
382 ENDYUV2RGBLINE(24, 0)
384 PUTBGR24(dst_1, py_1, 0);
385 PUTBGR24(dst_2, py_2, 0);
388 PUTBGR24(dst_2, py_2, 1);
389 PUTBGR24(dst_1, py_1, 1);
390 ENDYUV2RGBLINE(24, 1)
392 PUTBGR24(dst_1, py_1, 0);
393 PUTBGR24(dst_2, py_2, 0);
396 YUV2RGBFUNC(yuv2rgb_c_16_ordered_dither, uint16_t, 0)
397 const uint8_t *d16 = ff_dither_2x2_8[y & 1];
398 const uint8_t *e16 = ff_dither_2x2_4[y & 1];
399 const uint8_t *f16 = ff_dither_2x2_8[(y & 1)^1];
401 #define PUTRGB16(dst, src, i, o) \
403 dst[2 * i] = r[Y + d16[0 + o]] + \
404 g[Y + e16[0 + o]] + \
406 Y = src[2 * i + 1]; \
407 dst[2 * i + 1] = r[Y + d16[1 + o]] + \
408 g[Y + e16[1 + o]] + \
411 PUTRGB16(dst_1, py_1, 0, 0);
412 PUTRGB16(dst_2, py_2, 0, 0 + 8);
415 PUTRGB16(dst_2, py_2, 1, 2 + 8);
416 PUTRGB16(dst_1, py_1, 1, 2);
419 PUTRGB16(dst_1, py_1, 2, 4);
420 PUTRGB16(dst_2, py_2, 2, 4 + 8);
423 PUTRGB16(dst_2, py_2, 3, 6 + 8);
424 PUTRGB16(dst_1, py_1, 3, 6);
427 YUV2RGBFUNC(yuv2rgb_c_15_ordered_dither, uint16_t, 0)
428 const uint8_t *d16 = ff_dither_2x2_8[y & 1];
429 const uint8_t *e16 = ff_dither_2x2_8[(y & 1)^1];
431 #define PUTRGB15(dst, src, i, o) \
433 dst[2 * i] = r[Y + d16[0 + o]] + \
434 g[Y + d16[1 + o]] + \
436 Y = src[2 * i + 1]; \
437 dst[2 * i + 1] = r[Y + d16[1 + o]] + \
438 g[Y + d16[0 + o]] + \
441 PUTRGB15(dst_1, py_1, 0, 0);
442 PUTRGB15(dst_2, py_2, 0, 0 + 8);
445 PUTRGB15(dst_2, py_2, 1, 2 + 8);
446 PUTRGB15(dst_1, py_1, 1, 2);
449 PUTRGB15(dst_1, py_1, 2, 4);
450 PUTRGB15(dst_2, py_2, 2, 4 + 8);
453 PUTRGB15(dst_2, py_2, 3, 6 + 8);
454 PUTRGB15(dst_1, py_1, 3, 6);
457 // r, g, b, dst_1, dst_2
458 YUV2RGBFUNC(yuv2rgb_c_12_ordered_dither, uint16_t, 0)
459 const uint8_t *d16 = ff_dither_4x4_16[y & 3];
461 #define PUTRGB12(dst, src, i, o) \
463 dst[2 * i] = r[Y + d16[0 + o]] + \
464 g[Y + d16[0 + o]] + \
466 Y = src[2 * i + 1]; \
467 dst[2 * i + 1] = r[Y + d16[1 + o]] + \
468 g[Y + d16[1 + o]] + \
472 PUTRGB12(dst_1, py_1, 0, 0);
473 PUTRGB12(dst_2, py_2, 0, 0 + 8);
476 PUTRGB12(dst_2, py_2, 1, 2 + 8);
477 PUTRGB12(dst_1, py_1, 1, 2);
480 PUTRGB12(dst_1, py_1, 2, 4);
481 PUTRGB12(dst_2, py_2, 2, 4 + 8);
484 PUTRGB12(dst_2, py_2, 3, 6 + 8);
485 PUTRGB12(dst_1, py_1, 3, 6);
488 // r, g, b, dst_1, dst_2
489 YUV2RGBFUNC(yuv2rgb_c_8_ordered_dither, uint8_t, 0)
490 const uint8_t *d32 = ff_dither_8x8_32[y & 7];
491 const uint8_t *d64 = ff_dither_8x8_73[y & 7];
493 #define PUTRGB8(dst, src, i, o) \
495 dst[2 * i] = r[Y + d32[0 + o]] + \
496 g[Y + d32[0 + o]] + \
498 Y = src[2 * i + 1]; \
499 dst[2 * i + 1] = r[Y + d32[1 + o]] + \
500 g[Y + d32[1 + o]] + \
504 PUTRGB8(dst_1, py_1, 0, 0);
505 PUTRGB8(dst_2, py_2, 0, 0 + 8);
508 PUTRGB8(dst_2, py_2, 1, 2 + 8);
509 PUTRGB8(dst_1, py_1, 1, 2);
512 PUTRGB8(dst_1, py_1, 2, 4);
513 PUTRGB8(dst_2, py_2, 2, 4 + 8);
516 PUTRGB8(dst_2, py_2, 3, 6 + 8);
517 PUTRGB8(dst_1, py_1, 3, 6);
520 const uint8_t *d32 = ff_dither_8x8_32[y & 7];
521 const uint8_t *d64 = ff_dither_8x8_73[y & 7];
523 PUTRGB8(dst_1, py_1, 0, 0);
524 PUTRGB8(dst_2, py_2, 0, 0 + 8);
527 PUTRGB8(dst_2, py_2, 1, 2 + 8);
528 PUTRGB8(dst_1, py_1, 1, 2);
531 const uint8_t *d32 = ff_dither_8x8_32[y & 7];
532 const uint8_t *d64 = ff_dither_8x8_73[y & 7];
534 PUTRGB8(dst_1, py_1, 0, 0);
535 PUTRGB8(dst_2, py_2, 0, 0 + 8);
540 YUV2RGBFUNC(yuv2rgb_c_4_ordered_dither, uint8_t, 0)
541 const uint8_t * d64 = ff_dither_8x8_73[y & 7];
542 const uint8_t *d128 = ff_dither_8x8_220[y & 7];
545 #define PUTRGB4D(dst, src, i, o) \
547 acc = r[Y + d128[0 + o]] + \
548 g[Y + d64[0 + o]] + \
549 b[Y + d128[0 + o]]; \
550 Y = src[2 * i + 1]; \
551 acc |= (r[Y + d128[1 + o]] + \
552 g[Y + d64[1 + o]] + \
553 b[Y + d128[1 + o]]) << 4; \
557 PUTRGB4D(dst_1, py_1, 0, 0);
558 PUTRGB4D(dst_2, py_2, 0, 0 + 8);
561 PUTRGB4D(dst_2, py_2, 1, 2 + 8);
562 PUTRGB4D(dst_1, py_1, 1, 2);
565 PUTRGB4D(dst_1, py_1, 2, 4);
566 PUTRGB4D(dst_2, py_2, 2, 4 + 8);
569 PUTRGB4D(dst_2, py_2, 3, 6 + 8);
570 PUTRGB4D(dst_1, py_1, 3, 6);
573 const uint8_t * d64 = ff_dither_8x8_73[y & 7];
574 const uint8_t *d128 = ff_dither_8x8_220[y & 7];
577 PUTRGB4D(dst_1, py_1, 0, 0);
578 PUTRGB4D(dst_2, py_2, 0, 0 + 8);
581 PUTRGB4D(dst_2, py_2, 1, 2 + 8);
582 PUTRGB4D(dst_1, py_1, 1, 2);
585 const uint8_t * d64 = ff_dither_8x8_73[y & 7];
586 const uint8_t *d128 = ff_dither_8x8_220[y & 7];
589 PUTRGB4D(dst_1, py_1, 0, 0);
590 PUTRGB4D(dst_2, py_2, 0, 0 + 8);
593 YUV2RGBFUNC(yuv2rgb_c_4b_ordered_dither, uint8_t, 0)
594 const uint8_t *d64 = ff_dither_8x8_73[y & 7];
595 const uint8_t *d128 = ff_dither_8x8_220[y & 7];
597 #define PUTRGB4DB(dst, src, i, o) \
599 dst[2 * i] = r[Y + d128[0 + o]] + \
600 g[Y + d64[0 + o]] + \
601 b[Y + d128[0 + o]]; \
602 Y = src[2 * i + 1]; \
603 dst[2 * i + 1] = r[Y + d128[1 + o]] + \
604 g[Y + d64[1 + o]] + \
608 PUTRGB4DB(dst_1, py_1, 0, 0);
609 PUTRGB4DB(dst_2, py_2, 0, 0 + 8);
612 PUTRGB4DB(dst_2, py_2, 1, 2 + 8);
613 PUTRGB4DB(dst_1, py_1, 1, 2);
616 PUTRGB4DB(dst_1, py_1, 2, 4);
617 PUTRGB4DB(dst_2, py_2, 2, 4 + 8);
620 PUTRGB4DB(dst_2, py_2, 3, 6 + 8);
621 PUTRGB4DB(dst_1, py_1, 3, 6);
623 const uint8_t *d64 = ff_dither_8x8_73[y & 7];
624 const uint8_t *d128 = ff_dither_8x8_220[y & 7];
626 PUTRGB4DB(dst_1, py_1, 0, 0);
627 PUTRGB4DB(dst_2, py_2, 0, 0 + 8);
630 PUTRGB4DB(dst_2, py_2, 1, 2 + 8);
631 PUTRGB4DB(dst_1, py_1, 1, 2);
633 const uint8_t *d64 = ff_dither_8x8_73[y & 7];
634 const uint8_t *d128 = ff_dither_8x8_220[y & 7];
636 PUTRGB4DB(dst_1, py_1, 0, 0);
637 PUTRGB4DB(dst_2, py_2, 0, 0 + 8);
640 YUV2RGBFUNC(yuv2rgb_c_1_ordered_dither, uint8_t, 0)
641 const uint8_t *d128 = ff_dither_8x8_220[y & 7];
642 char out_1 = 0, out_2 = 0;
643 g = c->table_gU[128 + YUVRGB_TABLE_HEADROOM] + c->table_gV[128 + YUVRGB_TABLE_HEADROOM];
645 #define PUTRGB1(out, src, i, o) \
647 out += out + g[Y + d128[0 + o]]; \
648 Y = src[2 * i + 1]; \
649 out += out + g[Y + d128[1 + o]];
651 PUTRGB1(out_1, py_1, 0, 0);
652 PUTRGB1(out_2, py_2, 0, 0 + 8);
654 PUTRGB1(out_2, py_2, 1, 2 + 8);
655 PUTRGB1(out_1, py_1, 1, 2);
657 PUTRGB1(out_1, py_1, 2, 4);
658 PUTRGB1(out_2, py_2, 2, 4 + 8);
660 PUTRGB1(out_2, py_2, 3, 6 + 8);
661 PUTRGB1(out_1, py_1, 3, 6);
667 SwsFunc ff_yuv2rgb_get_func_ptr(SwsContext *c)
672 t = ff_yuv2rgb_init_ppc(c);
674 t = ff_yuv2rgb_init_x86(c);
679 av_log(c, AV_LOG_WARNING,
680 "No accelerated colorspace conversion found from %s to %s.\n",
681 av_get_pix_fmt_name(c->srcFormat), av_get_pix_fmt_name(c->dstFormat));
683 switch (c->dstFormat) {
684 case AV_PIX_FMT_BGR48BE:
685 case AV_PIX_FMT_BGR48LE:
686 return yuv2rgb_c_bgr48;
687 case AV_PIX_FMT_RGB48BE:
688 case AV_PIX_FMT_RGB48LE:
690 case AV_PIX_FMT_ARGB:
691 case AV_PIX_FMT_ABGR:
692 if (CONFIG_SWSCALE_ALPHA && isALPHA(c->srcFormat))
694 case AV_PIX_FMT_RGBA:
695 case AV_PIX_FMT_BGRA:
696 return (CONFIG_SWSCALE_ALPHA && isALPHA(c->srcFormat)) ? yuva2rgba_c : yuv2rgb_c_32;
697 case AV_PIX_FMT_RGB24:
698 return yuv2rgb_c_24_rgb;
699 case AV_PIX_FMT_BGR24:
700 return yuv2rgb_c_24_bgr;
701 case AV_PIX_FMT_RGB565:
702 case AV_PIX_FMT_BGR565:
703 return yuv2rgb_c_16_ordered_dither;
704 case AV_PIX_FMT_RGB555:
705 case AV_PIX_FMT_BGR555:
706 return yuv2rgb_c_15_ordered_dither;
707 case AV_PIX_FMT_RGB444:
708 case AV_PIX_FMT_BGR444:
709 return yuv2rgb_c_12_ordered_dither;
710 case AV_PIX_FMT_RGB8:
711 case AV_PIX_FMT_BGR8:
712 return yuv2rgb_c_8_ordered_dither;
713 case AV_PIX_FMT_RGB4:
714 case AV_PIX_FMT_BGR4:
715 return yuv2rgb_c_4_ordered_dither;
716 case AV_PIX_FMT_RGB4_BYTE:
717 case AV_PIX_FMT_BGR4_BYTE:
718 return yuv2rgb_c_4b_ordered_dither;
719 case AV_PIX_FMT_MONOBLACK:
720 return yuv2rgb_c_1_ordered_dither;
725 static void fill_table(uint8_t* table[256 + 2*YUVRGB_TABLE_HEADROOM], const int elemsize,
726 const int64_t inc, void *y_tab)
729 uint8_t *y_table = y_tab;
731 y_table -= elemsize * (inc >> 9);
733 for (i = 0; i < 256 + 2*YUVRGB_TABLE_HEADROOM; i++) {
734 int64_t cb = av_clip_uint8(i-YUVRGB_TABLE_HEADROOM)*inc;
735 table[i] = y_table + elemsize * (cb >> 16);
739 static void fill_gv_table(int table[256 + 2*YUVRGB_TABLE_HEADROOM], const int elemsize, const int64_t inc)
742 int off = -(inc >> 9);
744 for (i = 0; i < 256 + 2*YUVRGB_TABLE_HEADROOM; i++) {
745 int64_t cb = av_clip_uint8(i-YUVRGB_TABLE_HEADROOM)*inc;
746 table[i] = elemsize * (off + (cb >> 16));
750 static uint16_t roundToInt16(int64_t f)
752 int r = (f + (1 << 15)) >> 16;
762 av_cold int ff_yuv2rgb_c_init_tables(SwsContext *c, const int inv_table[4],
763 int fullRange, int brightness,
764 int contrast, int saturation)
766 const int isRgb = c->dstFormat == AV_PIX_FMT_RGB32 ||
767 c->dstFormat == AV_PIX_FMT_RGB32_1 ||
768 c->dstFormat == AV_PIX_FMT_BGR24 ||
769 c->dstFormat == AV_PIX_FMT_RGB565BE ||
770 c->dstFormat == AV_PIX_FMT_RGB565LE ||
771 c->dstFormat == AV_PIX_FMT_RGB555BE ||
772 c->dstFormat == AV_PIX_FMT_RGB555LE ||
773 c->dstFormat == AV_PIX_FMT_RGB444BE ||
774 c->dstFormat == AV_PIX_FMT_RGB444LE ||
775 c->dstFormat == AV_PIX_FMT_RGB8 ||
776 c->dstFormat == AV_PIX_FMT_RGB4 ||
777 c->dstFormat == AV_PIX_FMT_RGB4_BYTE ||
778 c->dstFormat == AV_PIX_FMT_MONOBLACK;
779 const int isNotNe = c->dstFormat == AV_PIX_FMT_NE(RGB565LE, RGB565BE) ||
780 c->dstFormat == AV_PIX_FMT_NE(RGB555LE, RGB555BE) ||
781 c->dstFormat == AV_PIX_FMT_NE(RGB444LE, RGB444BE) ||
782 c->dstFormat == AV_PIX_FMT_NE(BGR565LE, BGR565BE) ||
783 c->dstFormat == AV_PIX_FMT_NE(BGR555LE, BGR555BE) ||
784 c->dstFormat == AV_PIX_FMT_NE(BGR444LE, BGR444BE);
785 const int bpp = c->dstFormatBpp;
789 int i, base, rbase, gbase, bbase, av_uninit(abase), needAlpha;
790 const int yoffs = (fullRange ? 384 : 326) + YUVRGB_TABLE_LUMA_HEADROOM;
791 const int table_plane_size = 1024 + 2*YUVRGB_TABLE_LUMA_HEADROOM;
793 int64_t crv = inv_table[0];
794 int64_t cbu = inv_table[1];
795 int64_t cgu = -inv_table[2];
796 int64_t cgv = -inv_table[3];
797 int64_t cy = 1 << 16;
802 cy = (cy * 255) / 219;
805 crv = (crv * 224) / 255;
806 cbu = (cbu * 224) / 255;
807 cgu = (cgu * 224) / 255;
808 cgv = (cgv * 224) / 255;
811 cy = (cy * contrast) >> 16;
812 crv = (crv * contrast * saturation) >> 32;
813 cbu = (cbu * contrast * saturation) >> 32;
814 cgu = (cgu * contrast * saturation) >> 32;
815 cgv = (cgv * contrast * saturation) >> 32;
816 oy -= 256 * brightness;
818 c->uOffset = 0x0400040004000400LL;
819 c->vOffset = 0x0400040004000400LL;
820 c->yCoeff = roundToInt16(cy * (1 << 13)) * 0x0001000100010001ULL;
821 c->vrCoeff = roundToInt16(crv * (1 << 13)) * 0x0001000100010001ULL;
822 c->ubCoeff = roundToInt16(cbu * (1 << 13)) * 0x0001000100010001ULL;
823 c->vgCoeff = roundToInt16(cgv * (1 << 13)) * 0x0001000100010001ULL;
824 c->ugCoeff = roundToInt16(cgu * (1 << 13)) * 0x0001000100010001ULL;
825 c->yOffset = roundToInt16(oy * (1 << 3)) * 0x0001000100010001ULL;
827 c->yuv2rgb_y_coeff = (int16_t)roundToInt16(cy * (1 << 13));
828 c->yuv2rgb_y_offset = (int16_t)roundToInt16(oy * (1 << 9));
829 c->yuv2rgb_v2r_coeff = (int16_t)roundToInt16(crv * (1 << 13));
830 c->yuv2rgb_v2g_coeff = (int16_t)roundToInt16(cgv * (1 << 13));
831 c->yuv2rgb_u2g_coeff = (int16_t)roundToInt16(cgu * (1 << 13));
832 c->yuv2rgb_u2b_coeff = (int16_t)roundToInt16(cbu * (1 << 13));
834 //scale coefficients by cy
835 crv = ((crv * (1 << 16)) + 0x8000) / FFMAX(cy, 1);
836 cbu = ((cbu * (1 << 16)) + 0x8000) / FFMAX(cy, 1);
837 cgu = ((cgu * (1 << 16)) + 0x8000) / FFMAX(cy, 1);
838 cgv = ((cgv * (1 << 16)) + 0x8000) / FFMAX(cy, 1);
840 av_freep(&c->yuvTable);
842 #define ALLOC_YUV_TABLE(x) \
843 c->yuvTable = av_malloc(x); \
845 return AVERROR(ENOMEM);
848 ALLOC_YUV_TABLE(table_plane_size);
849 y_table = c->yuvTable;
850 yb = -(384 << 16) - YUVRGB_TABLE_LUMA_HEADROOM*cy - oy;
851 for (i = 0; i < table_plane_size - 110; i++) {
852 y_table[i + 110] = av_clip_uint8((yb + 0x8000) >> 16) >> 7;
855 fill_table(c->table_gU, 1, cgu, y_table + yoffs);
856 fill_gv_table(c->table_gV, 1, cgv);
860 rbase = isRgb ? 3 : 0;
862 bbase = isRgb ? 0 : 3;
863 ALLOC_YUV_TABLE(table_plane_size * 3);
864 y_table = c->yuvTable;
865 yb = -(384 << 16) - YUVRGB_TABLE_LUMA_HEADROOM*cy - oy;
866 for (i = 0; i < table_plane_size - 110; i++) {
867 int yval = av_clip_uint8((yb + 0x8000) >> 16);
868 y_table[i + 110] = (yval >> 7) << rbase;
869 y_table[i + 37 + table_plane_size] = ((yval + 43) / 85) << gbase;
870 y_table[i + 110 + 2*table_plane_size] = (yval >> 7) << bbase;
873 fill_table(c->table_rV, 1, crv, y_table + yoffs);
874 fill_table(c->table_gU, 1, cgu, y_table + yoffs + table_plane_size);
875 fill_table(c->table_bU, 1, cbu, y_table + yoffs + 2*table_plane_size);
876 fill_gv_table(c->table_gV, 1, cgv);
879 rbase = isRgb ? 5 : 0;
880 gbase = isRgb ? 2 : 3;
881 bbase = isRgb ? 0 : 6;
882 ALLOC_YUV_TABLE(table_plane_size * 3);
883 y_table = c->yuvTable;
884 yb = -(384 << 16) - YUVRGB_TABLE_LUMA_HEADROOM*cy - oy;
885 for (i = 0; i < table_plane_size - 38; i++) {
886 int yval = av_clip_uint8((yb + 0x8000) >> 16);
887 y_table[i + 16] = ((yval + 18) / 36) << rbase;
888 y_table[i + 16 + table_plane_size] = ((yval + 18) / 36) << gbase;
889 y_table[i + 37 + 2*table_plane_size] = ((yval + 43) / 85) << bbase;
892 fill_table(c->table_rV, 1, crv, y_table + yoffs);
893 fill_table(c->table_gU, 1, cgu, y_table + yoffs + table_plane_size);
894 fill_table(c->table_bU, 1, cbu, y_table + yoffs + 2*table_plane_size);
895 fill_gv_table(c->table_gV, 1, cgv);
898 rbase = isRgb ? 8 : 0;
900 bbase = isRgb ? 0 : 8;
901 ALLOC_YUV_TABLE(table_plane_size * 3 * 2);
902 y_table16 = c->yuvTable;
903 yb = -(384 << 16) - YUVRGB_TABLE_LUMA_HEADROOM*cy - oy;
904 for (i = 0; i < table_plane_size; i++) {
905 uint8_t yval = av_clip_uint8((yb + 0x8000) >> 16);
906 y_table16[i] = (yval >> 4) << rbase;
907 y_table16[i + table_plane_size] = (yval >> 4) << gbase;
908 y_table16[i + 2*table_plane_size] = (yval >> 4) << bbase;
912 for (i = 0; i < table_plane_size * 3; i++)
913 y_table16[i] = av_bswap16(y_table16[i]);
914 fill_table(c->table_rV, 2, crv, y_table16 + yoffs);
915 fill_table(c->table_gU, 2, cgu, y_table16 + yoffs + table_plane_size);
916 fill_table(c->table_bU, 2, cbu, y_table16 + yoffs + 2*table_plane_size);
917 fill_gv_table(c->table_gV, 2, cgv);
921 rbase = isRgb ? bpp - 5 : 0;
923 bbase = isRgb ? 0 : (bpp - 5);
924 ALLOC_YUV_TABLE(table_plane_size * 3 * 2);
925 y_table16 = c->yuvTable;
926 yb = -(384 << 16) - YUVRGB_TABLE_LUMA_HEADROOM*cy - oy;
927 for (i = 0; i < table_plane_size; i++) {
928 uint8_t yval = av_clip_uint8((yb + 0x8000) >> 16);
929 y_table16[i] = (yval >> 3) << rbase;
930 y_table16[i + table_plane_size] = (yval >> (18 - bpp)) << gbase;
931 y_table16[i + 2*table_plane_size] = (yval >> 3) << bbase;
935 for (i = 0; i < table_plane_size * 3; i++)
936 y_table16[i] = av_bswap16(y_table16[i]);
937 fill_table(c->table_rV, 2, crv, y_table16 + yoffs);
938 fill_table(c->table_gU, 2, cgu, y_table16 + yoffs + table_plane_size);
939 fill_table(c->table_bU, 2, cbu, y_table16 + yoffs + 2*table_plane_size);
940 fill_gv_table(c->table_gV, 2, cgv);
944 ALLOC_YUV_TABLE(table_plane_size);
945 y_table = c->yuvTable;
946 yb = -(384 << 16) - YUVRGB_TABLE_LUMA_HEADROOM*cy - oy;
947 for (i = 0; i < table_plane_size; i++) {
948 y_table[i] = av_clip_uint8((yb + 0x8000) >> 16);
951 fill_table(c->table_rV, 1, crv, y_table + yoffs);
952 fill_table(c->table_gU, 1, cgu, y_table + yoffs);
953 fill_table(c->table_bU, 1, cbu, y_table + yoffs);
954 fill_gv_table(c->table_gV, 1, cgv);
958 base = (c->dstFormat == AV_PIX_FMT_RGB32_1 ||
959 c->dstFormat == AV_PIX_FMT_BGR32_1) ? 8 : 0;
960 rbase = base + (isRgb ? 16 : 0);
962 bbase = base + (isRgb ? 0 : 16);
963 needAlpha = CONFIG_SWSCALE_ALPHA && isALPHA(c->srcFormat);
965 abase = (base + 24) & 31;
966 ALLOC_YUV_TABLE(table_plane_size * 3 * 4);
967 y_table32 = c->yuvTable;
968 yb = -(384 << 16) - YUVRGB_TABLE_LUMA_HEADROOM*cy - oy;
969 for (i = 0; i < table_plane_size; i++) {
970 unsigned yval = av_clip_uint8((yb + 0x8000) >> 16);
971 y_table32[i] = (yval << rbase) +
972 (needAlpha ? 0 : (255u << abase));
973 y_table32[i + table_plane_size] = yval << gbase;
974 y_table32[i + 2*table_plane_size] = yval << bbase;
977 fill_table(c->table_rV, 4, crv, y_table32 + yoffs);
978 fill_table(c->table_gU, 4, cgu, y_table32 + yoffs + table_plane_size);
979 fill_table(c->table_bU, 4, cbu, y_table32 + yoffs + 2*table_plane_size);
980 fill_gv_table(c->table_gV, 4, cgv);
983 if(!isPlanar(c->dstFormat) || bpp <= 24)
984 av_log(c, AV_LOG_ERROR, "%ibpp not supported by yuv2rgb\n", bpp);