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
31 #include "libavutil/cpu.h"
32 #include "libavutil/bswap.h"
36 #include "swscale_internal.h"
37 #include "libavutil/pixdesc.h"
39 extern const uint8_t dither_4x4_16[4][8];
40 extern const uint8_t dither_8x8_32[8][8];
41 extern const uint8_t dither_8x8_73[8][8];
42 extern const uint8_t dither_8x8_220[8][8];
44 const int32_t ff_yuv2rgb_coeffs[8][4] = {
45 { 117504, 138453, 13954, 34903 }, /* no sequence_display_extension */
46 { 117504, 138453, 13954, 34903 }, /* ITU-R Rec. 709 (1990) */
47 { 104597, 132201, 25675, 53279 }, /* unspecified */
48 { 104597, 132201, 25675, 53279 }, /* reserved */
49 { 104448, 132798, 24759, 53109 }, /* FCC */
50 { 104597, 132201, 25675, 53279 }, /* ITU-R Rec. 624-4 System B, G */
51 { 104597, 132201, 25675, 53279 }, /* SMPTE 170M */
52 { 117579, 136230, 16907, 35559 } /* SMPTE 240M (1987) */
55 const int *sws_getCoefficients(int colorspace)
57 if (colorspace > 7 || colorspace < 0)
58 colorspace = SWS_CS_DEFAULT;
59 return ff_yuv2rgb_coeffs[colorspace];
62 #define LOADCHROMA(i) \
65 r = (void *)c->table_rV[V+YUVRGB_TABLE_HEADROOM]; \
66 g = (void *)(c->table_gU[U+YUVRGB_TABLE_HEADROOM] + c->table_gV[V+YUVRGB_TABLE_HEADROOM]); \
67 b = (void *)c->table_bU[U+YUVRGB_TABLE_HEADROOM];
69 #define PUTRGB(dst, src, i) \
71 dst[2 * i] = r[Y] + g[Y] + b[Y]; \
73 dst[2 * i + 1] = r[Y] + g[Y] + b[Y];
75 #define PUTRGB24(dst, src, i) \
77 dst[6 * i + 0] = r[Y]; \
78 dst[6 * i + 1] = g[Y]; \
79 dst[6 * i + 2] = b[Y]; \
81 dst[6 * i + 3] = r[Y]; \
82 dst[6 * i + 4] = g[Y]; \
83 dst[6 * i + 5] = b[Y];
85 #define PUTBGR24(dst, src, i) \
87 dst[6 * i + 0] = b[Y]; \
88 dst[6 * i + 1] = g[Y]; \
89 dst[6 * i + 2] = r[Y]; \
91 dst[6 * i + 3] = b[Y]; \
92 dst[6 * i + 4] = g[Y]; \
93 dst[6 * i + 5] = r[Y];
95 #define PUTRGBA(dst, ysrc, asrc, i, s) \
97 dst[2 * i] = r[Y] + g[Y] + b[Y] + (asrc[2 * i] << s); \
98 Y = ysrc[2 * i + 1]; \
99 dst[2 * i + 1] = r[Y] + g[Y] + b[Y] + (asrc[2 * i + 1] << s);
101 #define PUTRGB48(dst, src, i) \
103 dst[12 * i + 0] = dst[12 * i + 1] = r[Y]; \
104 dst[12 * i + 2] = dst[12 * i + 3] = g[Y]; \
105 dst[12 * i + 4] = dst[12 * i + 5] = b[Y]; \
106 Y = src[ 2 * i + 1]; \
107 dst[12 * i + 6] = dst[12 * i + 7] = r[Y]; \
108 dst[12 * i + 8] = dst[12 * i + 9] = g[Y]; \
109 dst[12 * i + 10] = dst[12 * i + 11] = b[Y];
111 #define PUTBGR48(dst, src, i) \
113 dst[12 * i + 0] = dst[12 * i + 1] = b[Y]; \
114 dst[12 * i + 2] = dst[12 * i + 3] = g[Y]; \
115 dst[12 * i + 4] = dst[12 * i + 5] = r[Y]; \
116 Y = src[2 * i + 1]; \
117 dst[12 * i + 6] = dst[12 * i + 7] = b[Y]; \
118 dst[12 * i + 8] = dst[12 * i + 9] = g[Y]; \
119 dst[12 * i + 10] = dst[12 * i + 11] = r[Y];
121 #define YUV2RGBFUNC(func_name, dst_type, alpha) \
122 static int func_name(SwsContext *c, const uint8_t *src[], \
123 int srcStride[], int srcSliceY, int srcSliceH, \
124 uint8_t *dst[], int dstStride[]) \
128 if (!alpha && c->srcFormat == PIX_FMT_YUV422P) { \
132 for (y = 0; y < srcSliceH; y += 2) { \
134 (dst_type *)(dst[0] + (y + srcSliceY) * dstStride[0]); \
136 (dst_type *)(dst[0] + (y + srcSliceY + 1) * dstStride[0]); \
137 dst_type av_unused *r, *g, *b; \
138 const uint8_t *py_1 = src[0] + y * srcStride[0]; \
139 const uint8_t *py_2 = py_1 + srcStride[0]; \
140 const uint8_t *pu = src[1] + (y >> 1) * srcStride[1]; \
141 const uint8_t *pv = src[2] + (y >> 1) * srcStride[2]; \
142 const uint8_t av_unused *pa_1, *pa_2; \
143 unsigned int h_size = c->dstW >> 3; \
145 pa_1 = src[3] + y * srcStride[3]; \
146 pa_2 = pa_1 + srcStride[3]; \
149 int av_unused U, V, Y; \
151 #define ENDYUV2RGBLINE(dst_delta) \
156 dst_1 += dst_delta; \
157 dst_2 += dst_delta; \
160 int av_unused Y, U, V; \
162 #define ENDYUV2RGBFUNC() \
168 #define CLOSEYUV2RGBFUNC(dst_delta) \
169 ENDYUV2RGBLINE(dst_delta) \
172 YUV2RGBFUNC(yuv2rgb_c_48, uint8_t, 0)
174 PUTRGB48(dst_1, py_1, 0);
175 PUTRGB48(dst_2, py_2, 0);
178 PUTRGB48(dst_2, py_2, 1);
179 PUTRGB48(dst_1, py_1, 1);
182 PUTRGB48(dst_1, py_1, 2);
183 PUTRGB48(dst_2, py_2, 2);
186 PUTRGB48(dst_2, py_2, 3);
187 PUTRGB48(dst_1, py_1, 3);
190 PUTRGB48(dst_1, py_1, 0);
191 PUTRGB48(dst_2, py_2, 0);
194 PUTRGB48(dst_2, py_2, 1);
195 PUTRGB48(dst_1, py_1, 1);
198 YUV2RGBFUNC(yuv2rgb_c_bgr48, uint8_t, 0)
200 PUTBGR48(dst_1, py_1, 0);
201 PUTBGR48(dst_2, py_2, 0);
204 PUTBGR48(dst_2, py_2, 1);
205 PUTBGR48(dst_1, py_1, 1);
208 PUTBGR48(dst_1, py_1, 2);
209 PUTBGR48(dst_2, py_2, 2);
212 PUTBGR48(dst_2, py_2, 3);
213 PUTBGR48(dst_1, py_1, 3);
216 PUTBGR48(dst_1, py_1, 0);
217 PUTBGR48(dst_2, py_2, 0);
220 PUTBGR48(dst_2, py_2, 1);
221 PUTBGR48(dst_1, py_1, 1);
224 YUV2RGBFUNC(yuv2rgb_c_32, uint32_t, 0)
226 PUTRGB(dst_1, py_1, 0);
227 PUTRGB(dst_2, py_2, 0);
230 PUTRGB(dst_2, py_2, 1);
231 PUTRGB(dst_1, py_1, 1);
234 PUTRGB(dst_1, py_1, 2);
235 PUTRGB(dst_2, py_2, 2);
238 PUTRGB(dst_2, py_2, 3);
239 PUTRGB(dst_1, py_1, 3);
242 PUTRGB(dst_1, py_1, 0);
243 PUTRGB(dst_2, py_2, 0);
246 PUTRGB(dst_2, py_2, 1);
247 PUTRGB(dst_1, py_1, 1);
250 YUV2RGBFUNC(yuva2rgba_c, uint32_t, 1)
252 PUTRGBA(dst_1, py_1, pa_1, 0, 24);
253 PUTRGBA(dst_2, py_2, pa_2, 0, 24);
256 PUTRGBA(dst_2, py_2, pa_1, 1, 24);
257 PUTRGBA(dst_1, py_1, pa_2, 1, 24);
260 PUTRGBA(dst_1, py_1, pa_1, 2, 24);
261 PUTRGBA(dst_2, py_2, pa_2, 2, 24);
264 PUTRGBA(dst_2, py_2, pa_1, 3, 24);
265 PUTRGBA(dst_1, py_1, pa_2, 3, 24);
270 PUTRGBA(dst_1, py_1, pa_1, 0, 24);
271 PUTRGBA(dst_2, py_2, pa_2, 0, 24);
274 PUTRGBA(dst_2, py_2, pa_1, 1, 24);
275 PUTRGBA(dst_1, py_1, pa_2, 1, 24);
278 YUV2RGBFUNC(yuva2argb_c, uint32_t, 1)
280 PUTRGBA(dst_1, py_1, pa_1, 0, 0);
281 PUTRGBA(dst_2, py_2, pa_2, 0, 0);
284 PUTRGBA(dst_2, py_2, pa_2, 1, 0);
285 PUTRGBA(dst_1, py_1, pa_1, 1, 0);
288 PUTRGBA(dst_1, py_1, pa_1, 2, 0);
289 PUTRGBA(dst_2, py_2, pa_2, 2, 0);
292 PUTRGBA(dst_2, py_2, pa_2, 3, 0);
293 PUTRGBA(dst_1, py_1, pa_1, 3, 0);
298 PUTRGBA(dst_1, py_1, pa_1, 0, 0);
299 PUTRGBA(dst_2, py_2, pa_2, 0, 0);
302 PUTRGBA(dst_2, py_2, pa_2, 1, 0);
303 PUTRGBA(dst_1, py_1, pa_1, 1, 0);
306 YUV2RGBFUNC(yuv2rgb_c_24_rgb, uint8_t, 0)
308 PUTRGB24(dst_1, py_1, 0);
309 PUTRGB24(dst_2, py_2, 0);
312 PUTRGB24(dst_2, py_2, 1);
313 PUTRGB24(dst_1, py_1, 1);
316 PUTRGB24(dst_1, py_1, 2);
317 PUTRGB24(dst_2, py_2, 2);
320 PUTRGB24(dst_2, py_2, 3);
321 PUTRGB24(dst_1, py_1, 3);
324 PUTRGB24(dst_1, py_1, 0);
325 PUTRGB24(dst_2, py_2, 0);
328 PUTRGB24(dst_2, py_2, 1);
329 PUTRGB24(dst_1, py_1, 1);
332 // only trivial mods from yuv2rgb_c_24_rgb
333 YUV2RGBFUNC(yuv2rgb_c_24_bgr, uint8_t, 0)
335 PUTBGR24(dst_1, py_1, 0);
336 PUTBGR24(dst_2, py_2, 0);
339 PUTBGR24(dst_2, py_2, 1);
340 PUTBGR24(dst_1, py_1, 1);
343 PUTBGR24(dst_1, py_1, 2);
344 PUTBGR24(dst_2, py_2, 2);
347 PUTBGR24(dst_2, py_2, 3);
348 PUTBGR24(dst_1, py_1, 3);
351 PUTBGR24(dst_1, py_1, 0);
352 PUTBGR24(dst_2, py_2, 0);
355 PUTBGR24(dst_2, py_2, 1);
356 PUTBGR24(dst_1, py_1, 1);
359 // This is exactly the same code as yuv2rgb_c_32 except for the types of
360 // r, g, b, dst_1, dst_2
361 YUV2RGBFUNC(yuv2rgb_c_16, uint16_t, 0)
363 PUTRGB(dst_1, py_1, 0);
364 PUTRGB(dst_2, py_2, 0);
367 PUTRGB(dst_2, py_2, 1);
368 PUTRGB(dst_1, py_1, 1);
371 PUTRGB(dst_1, py_1, 2);
372 PUTRGB(dst_2, py_2, 2);
375 PUTRGB(dst_2, py_2, 3);
376 PUTRGB(dst_1, py_1, 3);
379 // r, g, b, dst_1, dst_2
380 YUV2RGBFUNC(yuv2rgb_c_12_ordered_dither, uint16_t, 0)
381 const uint8_t *d16 = dither_4x4_16[y & 3];
383 #define PUTRGB12(dst, src, i, o) \
385 dst[2 * i] = r[Y + d16[0 + o]] + \
386 g[Y + d16[0 + o]] + \
388 Y = src[2 * i + 1]; \
389 dst[2 * i + 1] = r[Y + d16[1 + o]] + \
390 g[Y + d16[1 + o]] + \
394 PUTRGB12(dst_1, py_1, 0, 0);
395 PUTRGB12(dst_2, py_2, 0, 0 + 8);
398 PUTRGB12(dst_2, py_2, 1, 2 + 8);
399 PUTRGB12(dst_1, py_1, 1, 2);
402 PUTRGB12(dst_1, py_1, 2, 4);
403 PUTRGB12(dst_2, py_2, 2, 4 + 8);
406 PUTRGB12(dst_2, py_2, 3, 6 + 8);
407 PUTRGB12(dst_1, py_1, 3, 6);
410 // r, g, b, dst_1, dst_2
411 YUV2RGBFUNC(yuv2rgb_c_8_ordered_dither, uint8_t, 0)
412 const uint8_t *d32 = dither_8x8_32[y & 7];
413 const uint8_t *d64 = dither_8x8_73[y & 7];
415 #define PUTRGB8(dst, src, i, o) \
417 dst[2 * i] = r[Y + d32[0 + o]] + \
418 g[Y + d32[0 + o]] + \
420 Y = src[2 * i + 1]; \
421 dst[2 * i + 1] = r[Y + d32[1 + o]] + \
422 g[Y + d32[1 + o]] + \
426 PUTRGB8(dst_1, py_1, 0, 0);
427 PUTRGB8(dst_2, py_2, 0, 0 + 8);
430 PUTRGB8(dst_2, py_2, 1, 2 + 8);
431 PUTRGB8(dst_1, py_1, 1, 2);
434 PUTRGB8(dst_1, py_1, 2, 4);
435 PUTRGB8(dst_2, py_2, 2, 4 + 8);
438 PUTRGB8(dst_2, py_2, 3, 6 + 8);
439 PUTRGB8(dst_1, py_1, 3, 6);
442 YUV2RGBFUNC(yuv2rgb_c_4_ordered_dither, uint8_t, 0)
443 const uint8_t * d64 = dither_8x8_73[y & 7];
444 const uint8_t *d128 = dither_8x8_220[y & 7];
447 #define PUTRGB4D(dst, src, i, o) \
449 acc = r[Y + d128[0 + o]] + \
450 g[Y + d64[0 + o]] + \
451 b[Y + d128[0 + o]]; \
452 Y = src[2 * i + 1]; \
453 acc |= (r[Y + d128[1 + o]] + \
454 g[Y + d64[1 + o]] + \
455 b[Y + d128[1 + o]]) << 4; \
459 PUTRGB4D(dst_1, py_1, 0, 0);
460 PUTRGB4D(dst_2, py_2, 0, 0 + 8);
463 PUTRGB4D(dst_2, py_2, 1, 2 + 8);
464 PUTRGB4D(dst_1, py_1, 1, 2);
467 PUTRGB4D(dst_1, py_1, 2, 4);
468 PUTRGB4D(dst_2, py_2, 2, 4 + 8);
471 PUTRGB4D(dst_2, py_2, 3, 6 + 8);
472 PUTRGB4D(dst_1, py_1, 3, 6);
475 YUV2RGBFUNC(yuv2rgb_c_4b_ordered_dither, uint8_t, 0)
476 const uint8_t *d64 = dither_8x8_73[y & 7];
477 const uint8_t *d128 = dither_8x8_220[y & 7];
479 #define PUTRGB4DB(dst, src, i, o) \
481 dst[2 * i] = r[Y + d128[0 + o]] + \
482 g[Y + d64[0 + o]] + \
483 b[Y + d128[0 + o]]; \
484 Y = src[2 * i + 1]; \
485 dst[2 * i + 1] = r[Y + d128[1 + o]] + \
486 g[Y + d64[1 + o]] + \
490 PUTRGB4DB(dst_1, py_1, 0, 0);
491 PUTRGB4DB(dst_2, py_2, 0, 0 + 8);
494 PUTRGB4DB(dst_2, py_2, 1, 2 + 8);
495 PUTRGB4DB(dst_1, py_1, 1, 2);
498 PUTRGB4DB(dst_1, py_1, 2, 4);
499 PUTRGB4DB(dst_2, py_2, 2, 4 + 8);
502 PUTRGB4DB(dst_2, py_2, 3, 6 + 8);
503 PUTRGB4DB(dst_1, py_1, 3, 6);
506 YUV2RGBFUNC(yuv2rgb_c_1_ordered_dither, uint8_t, 0)
507 const uint8_t *d128 = dither_8x8_220[y & 7];
508 char out_1 = 0, out_2 = 0;
509 g = c->table_gU[128 + YUVRGB_TABLE_HEADROOM] + c->table_gV[128 + YUVRGB_TABLE_HEADROOM];
511 #define PUTRGB1(out, src, i, o) \
513 out += out + g[Y + d128[0 + o]]; \
514 Y = src[2 * i + 1]; \
515 out += out + g[Y + d128[1 + o]];
517 PUTRGB1(out_1, py_1, 0, 0);
518 PUTRGB1(out_2, py_2, 0, 0 + 8);
520 PUTRGB1(out_2, py_2, 1, 2 + 8);
521 PUTRGB1(out_1, py_1, 1, 2);
523 PUTRGB1(out_1, py_1, 2, 4);
524 PUTRGB1(out_2, py_2, 2, 4 + 8);
526 PUTRGB1(out_2, py_2, 3, 6 + 8);
527 PUTRGB1(out_1, py_1, 3, 6);
533 SwsFunc ff_yuv2rgb_get_func_ptr(SwsContext *c)
538 t = ff_yuv2rgb_init_mmx(c);
540 t = ff_yuv2rgb_init_vis(c);
541 else if (HAVE_ALTIVEC)
542 t = ff_yuv2rgb_init_altivec(c);
544 t = ff_yuv2rgb_get_func_ptr_bfin(c);
549 av_log(c, AV_LOG_WARNING,
550 "No accelerated colorspace conversion found from %s to %s.\n",
551 av_get_pix_fmt_name(c->srcFormat), av_get_pix_fmt_name(c->dstFormat));
553 switch (c->dstFormat) {
554 case PIX_FMT_BGR48BE:
555 case PIX_FMT_BGR48LE:
556 return yuv2rgb_c_bgr48;
557 case PIX_FMT_RGB48BE:
558 case PIX_FMT_RGB48LE:
562 if (CONFIG_SWSCALE_ALPHA && isALPHA(c->srcFormat))
566 return (CONFIG_SWSCALE_ALPHA && isALPHA(c->srcFormat)) ? yuva2rgba_c : yuv2rgb_c_32;
568 return yuv2rgb_c_24_rgb;
570 return yuv2rgb_c_24_bgr;
578 return yuv2rgb_c_12_ordered_dither;
581 return yuv2rgb_c_8_ordered_dither;
584 return yuv2rgb_c_4_ordered_dither;
585 case PIX_FMT_RGB4_BYTE:
586 case PIX_FMT_BGR4_BYTE:
587 return yuv2rgb_c_4b_ordered_dither;
588 case PIX_FMT_MONOBLACK:
589 return yuv2rgb_c_1_ordered_dither;
596 static void fill_table(uint8_t* table[256 + 2*YUVRGB_TABLE_HEADROOM], const int elemsize,
597 const int inc, void *y_tab)
600 uint8_t *y_table = y_tab;
602 y_table -= elemsize * (inc >> 9);
604 for (i = 0; i < 256 + 2*YUVRGB_TABLE_HEADROOM; i++) {
605 int64_t cb = av_clip(i-YUVRGB_TABLE_HEADROOM, 0, 255)*inc;
606 table[i] = y_table + elemsize * (cb >> 16);
610 static void fill_gv_table(int table[256 + 2*YUVRGB_TABLE_HEADROOM], const int elemsize, const int inc)
613 int off = -(inc >> 9);
615 for (i = 0; i < 256 + 2*YUVRGB_TABLE_HEADROOM; i++) {
616 int64_t cb = av_clip(i-YUVRGB_TABLE_HEADROOM, 0, 255)*inc;
617 table[i] = elemsize * (off + (cb >> 16));
621 static uint16_t roundToInt16(int64_t f)
623 int r = (f + (1 << 15)) >> 16;
633 av_cold int ff_yuv2rgb_c_init_tables(SwsContext *c, const int inv_table[4],
634 int fullRange, int brightness,
635 int contrast, int saturation)
637 const int isRgb = c->dstFormat == PIX_FMT_RGB32 ||
638 c->dstFormat == PIX_FMT_RGB32_1 ||
639 c->dstFormat == PIX_FMT_BGR24 ||
640 c->dstFormat == PIX_FMT_RGB565BE ||
641 c->dstFormat == PIX_FMT_RGB565LE ||
642 c->dstFormat == PIX_FMT_RGB555BE ||
643 c->dstFormat == PIX_FMT_RGB555LE ||
644 c->dstFormat == PIX_FMT_RGB444BE ||
645 c->dstFormat == PIX_FMT_RGB444LE ||
646 c->dstFormat == PIX_FMT_RGB8 ||
647 c->dstFormat == PIX_FMT_RGB4 ||
648 c->dstFormat == PIX_FMT_RGB4_BYTE ||
649 c->dstFormat == PIX_FMT_MONOBLACK;
650 const int isNotNe = c->dstFormat == PIX_FMT_NE(RGB565LE, RGB565BE) ||
651 c->dstFormat == PIX_FMT_NE(RGB555LE, RGB555BE) ||
652 c->dstFormat == PIX_FMT_NE(RGB444LE, RGB444BE) ||
653 c->dstFormat == PIX_FMT_NE(BGR565LE, BGR565BE) ||
654 c->dstFormat == PIX_FMT_NE(BGR555LE, BGR555BE) ||
655 c->dstFormat == PIX_FMT_NE(BGR444LE, BGR444BE);
656 const int bpp = c->dstFormatBpp;
660 int i, base, rbase, gbase, bbase, av_uninit(abase), needAlpha;
661 const int yoffs = fullRange ? 384 : 326;
663 int64_t crv = inv_table[0];
664 int64_t cbu = inv_table[1];
665 int64_t cgu = -inv_table[2];
666 int64_t cgv = -inv_table[3];
667 int64_t cy = 1 << 16;
672 cy = (cy * 255) / 219;
675 crv = (crv * 224) / 255;
676 cbu = (cbu * 224) / 255;
677 cgu = (cgu * 224) / 255;
678 cgv = (cgv * 224) / 255;
681 cy = (cy * contrast) >> 16;
682 crv = (crv * contrast * saturation) >> 32;
683 cbu = (cbu * contrast * saturation) >> 32;
684 cgu = (cgu * contrast * saturation) >> 32;
685 cgv = (cgv * contrast * saturation) >> 32;
686 oy -= 256 * brightness;
688 c->uOffset = 0x0400040004000400LL;
689 c->vOffset = 0x0400040004000400LL;
690 c->yCoeff = roundToInt16(cy * 8192) * 0x0001000100010001ULL;
691 c->vrCoeff = roundToInt16(crv * 8192) * 0x0001000100010001ULL;
692 c->ubCoeff = roundToInt16(cbu * 8192) * 0x0001000100010001ULL;
693 c->vgCoeff = roundToInt16(cgv * 8192) * 0x0001000100010001ULL;
694 c->ugCoeff = roundToInt16(cgu * 8192) * 0x0001000100010001ULL;
695 c->yOffset = roundToInt16(oy * 8) * 0x0001000100010001ULL;
697 c->yuv2rgb_y_coeff = (int16_t)roundToInt16(cy << 13);
698 c->yuv2rgb_y_offset = (int16_t)roundToInt16(oy << 9);
699 c->yuv2rgb_v2r_coeff = (int16_t)roundToInt16(crv << 13);
700 c->yuv2rgb_v2g_coeff = (int16_t)roundToInt16(cgv << 13);
701 c->yuv2rgb_u2g_coeff = (int16_t)roundToInt16(cgu << 13);
702 c->yuv2rgb_u2b_coeff = (int16_t)roundToInt16(cbu << 13);
704 //scale coefficients by cy
705 crv = ((crv << 16) + 0x8000) / cy;
706 cbu = ((cbu << 16) + 0x8000) / cy;
707 cgu = ((cgu << 16) + 0x8000) / cy;
708 cgv = ((cgv << 16) + 0x8000) / cy;
710 av_free(c->yuvTable);
714 c->yuvTable = av_malloc(1024);
715 y_table = c->yuvTable;
716 yb = -(384 << 16) - oy;
717 for (i = 0; i < 1024 - 110; i++) {
718 y_table[i + 110] = av_clip_uint8((yb + 0x8000) >> 16) >> 7;
721 fill_table(c->table_gU, 1, cgu, y_table + yoffs);
722 fill_gv_table(c->table_gV, 1, cgv);
726 rbase = isRgb ? 3 : 0;
728 bbase = isRgb ? 0 : 3;
729 c->yuvTable = av_malloc(1024 * 3);
730 y_table = c->yuvTable;
731 yb = -(384 << 16) - oy;
732 for (i = 0; i < 1024 - 110; i++) {
733 int yval = av_clip_uint8((yb + 0x8000) >> 16);
734 y_table[i + 110] = (yval >> 7) << rbase;
735 y_table[i + 37 + 1024] = ((yval + 43) / 85) << gbase;
736 y_table[i + 110 + 2048] = (yval >> 7) << bbase;
739 fill_table(c->table_rV, 1, crv, y_table + yoffs);
740 fill_table(c->table_gU, 1, cgu, y_table + yoffs + 1024);
741 fill_table(c->table_bU, 1, cbu, y_table + yoffs + 2048);
742 fill_gv_table(c->table_gV, 1, cgv);
745 rbase = isRgb ? 5 : 0;
746 gbase = isRgb ? 2 : 3;
747 bbase = isRgb ? 0 : 6;
748 c->yuvTable = av_malloc(1024 * 3);
749 y_table = c->yuvTable;
750 yb = -(384 << 16) - oy;
751 for (i = 0; i < 1024 - 38; i++) {
752 int yval = av_clip_uint8((yb + 0x8000) >> 16);
753 y_table[i + 16] = ((yval + 18) / 36) << rbase;
754 y_table[i + 16 + 1024] = ((yval + 18) / 36) << gbase;
755 y_table[i + 37 + 2048] = ((yval + 43) / 85) << bbase;
758 fill_table(c->table_rV, 1, crv, y_table + yoffs);
759 fill_table(c->table_gU, 1, cgu, y_table + yoffs + 1024);
760 fill_table(c->table_bU, 1, cbu, y_table + yoffs + 2048);
761 fill_gv_table(c->table_gV, 1, cgv);
764 rbase = isRgb ? 8 : 0;
766 bbase = isRgb ? 0 : 8;
767 c->yuvTable = av_malloc(1024 * 3 * 2);
768 y_table16 = c->yuvTable;
769 yb = -(384 << 16) - oy;
770 for (i = 0; i < 1024; i++) {
771 uint8_t yval = av_clip_uint8((yb + 0x8000) >> 16);
772 y_table16[i] = (yval >> 4) << rbase;
773 y_table16[i + 1024] = (yval >> 4) << gbase;
774 y_table16[i + 2048] = (yval >> 4) << bbase;
778 for (i = 0; i < 1024 * 3; i++)
779 y_table16[i] = av_bswap16(y_table16[i]);
780 fill_table(c->table_rV, 2, crv, y_table16 + yoffs);
781 fill_table(c->table_gU, 2, cgu, y_table16 + yoffs + 1024);
782 fill_table(c->table_bU, 2, cbu, y_table16 + yoffs + 2048);
783 fill_gv_table(c->table_gV, 2, cgv);
787 rbase = isRgb ? bpp - 5 : 0;
789 bbase = isRgb ? 0 : (bpp - 5);
790 c->yuvTable = av_malloc(1024 * 3 * 2);
791 y_table16 = c->yuvTable;
792 yb = -(384 << 16) - oy;
793 for (i = 0; i < 1024; i++) {
794 uint8_t yval = av_clip_uint8((yb + 0x8000) >> 16);
795 y_table16[i] = (yval >> 3) << rbase;
796 y_table16[i + 1024] = (yval >> (18 - bpp)) << gbase;
797 y_table16[i + 2048] = (yval >> 3) << bbase;
801 for (i = 0; i < 1024 * 3; i++)
802 y_table16[i] = av_bswap16(y_table16[i]);
803 fill_table(c->table_rV, 2, crv, y_table16 + yoffs);
804 fill_table(c->table_gU, 2, cgu, y_table16 + yoffs + 1024);
805 fill_table(c->table_bU, 2, cbu, y_table16 + yoffs + 2048);
806 fill_gv_table(c->table_gV, 2, cgv);
810 c->yuvTable = av_malloc(1024);
811 y_table = c->yuvTable;
812 yb = -(384 << 16) - oy;
813 for (i = 0; i < 1024; i++) {
814 y_table[i] = av_clip_uint8((yb + 0x8000) >> 16);
817 fill_table(c->table_rV, 1, crv, y_table + yoffs);
818 fill_table(c->table_gU, 1, cgu, y_table + yoffs);
819 fill_table(c->table_bU, 1, cbu, y_table + yoffs);
820 fill_gv_table(c->table_gV, 1, cgv);
823 base = (c->dstFormat == PIX_FMT_RGB32_1 ||
824 c->dstFormat == PIX_FMT_BGR32_1) ? 8 : 0;
825 rbase = base + (isRgb ? 16 : 0);
827 bbase = base + (isRgb ? 0 : 16);
828 needAlpha = CONFIG_SWSCALE_ALPHA && isALPHA(c->srcFormat);
830 abase = (base + 24) & 31;
831 c->yuvTable = av_malloc(1024 * 3 * 4);
832 y_table32 = c->yuvTable;
833 yb = -(384 << 16) - oy;
834 for (i = 0; i < 1024; i++) {
835 unsigned yval = av_clip_uint8((yb + 0x8000) >> 16);
836 y_table32[i] = (yval << rbase) +
837 (needAlpha ? 0 : (255u << abase));
838 y_table32[i + 1024] = yval << gbase;
839 y_table32[i + 2048] = yval << bbase;
842 fill_table(c->table_rV, 4, crv, y_table32 + yoffs);
843 fill_table(c->table_gU, 4, cgu, y_table32 + yoffs + 1024);
844 fill_table(c->table_bU, 4, cbu, y_table32 + yoffs + 2048);
845 fill_gv_table(c->table_gV, 4, cgv);
849 av_log(c, AV_LOG_ERROR, "%ibpp not supported by yuv2rgb\n", bpp);