1 /*
2 * software YUV to RGB converter
3 *
4 * Copyright (C) 2009 Konstantin Shishkov
5 *
6 * 1,4,8bpp support and context / deglobalize stuff
7 * by Michael Niedermayer (michaelni@gmx.at)
8 *
9 * This file is part of FFmpeg.
10 *
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.
15 *
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.
20 *
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
24 */
25
26 #include <stdio.h>
27 #include <stdlib.h>
28 #include <inttypes.h>
29
30 #include "libavutil/cpu.h"
31 #include "libavutil/bswap.h"
32 #include "config.h"
33 #include "rgb2rgb.h"
34 #include "swscale.h"
35 #include "swscale_internal.h"
36 #include "libavutil/pixdesc.h"
37
38 /* Color space conversion coefficients for YCbCr -> RGB mapping.
39 *
40 * Entries are {crv, cbu, cgu, cgv}
41 *
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
46 *
47 * where Y = cr * R + cg * G + cb * B and cr + cg + cb = 1.
48 */
49 const int32_t ff_yuv2rgb_coeffs[11][4] = {
50 { 117489, 138438, 13975, 34925 }, /* no sequence_display_extension */
51 { 117489, 138438, 13975, 34925 }, /* 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) */
58 { 0 }, /* YCgCo */
59 { 110013, 140363, 12277, 42626 }, /* Bt-2020-NCL */
60 { 110013, 140363, 12277, 42626 }, /* Bt-2020-CL */
61 };
62
sws_getCoefficients(int colorspace)63 const int *sws_getCoefficients(int colorspace)
64 {
65 if (colorspace > 10 || colorspace < 0 || colorspace == 8)
66 colorspace = SWS_CS_DEFAULT;
67 return ff_yuv2rgb_coeffs[colorspace];
68 }
69
70 #define LOADCHROMA(i) \
71 U = pu[i]; \
72 V = pv[i]; \
73 r = (void *)c->table_rV[V+YUVRGB_TABLE_HEADROOM]; \
74 g = (void *)(c->table_gU[U+YUVRGB_TABLE_HEADROOM] + c->table_gV[V+YUVRGB_TABLE_HEADROOM]); \
75 b = (void *)c->table_bU[U+YUVRGB_TABLE_HEADROOM];
76
77 #define PUTRGB(dst, src, i) \
78 Y = src[2 * i]; \
79 dst[2 * i] = r[Y] + g[Y] + b[Y]; \
80 Y = src[2 * i + 1]; \
81 dst[2 * i + 1] = r[Y] + g[Y] + b[Y];
82
83 #define PUTRGB24(dst, src, i) \
84 Y = src[2 * i]; \
85 dst[6 * i + 0] = r[Y]; \
86 dst[6 * i + 1] = g[Y]; \
87 dst[6 * i + 2] = b[Y]; \
88 Y = src[2 * i + 1]; \
89 dst[6 * i + 3] = r[Y]; \
90 dst[6 * i + 4] = g[Y]; \
91 dst[6 * i + 5] = b[Y];
92
93 #define PUTBGR24(dst, src, i) \
94 Y = src[2 * i]; \
95 dst[6 * i + 0] = b[Y]; \
96 dst[6 * i + 1] = g[Y]; \
97 dst[6 * i + 2] = r[Y]; \
98 Y = src[2 * i + 1]; \
99 dst[6 * i + 3] = b[Y]; \
100 dst[6 * i + 4] = g[Y]; \
101 dst[6 * i + 5] = r[Y];
102
103 #define PUTRGBA(dst, ysrc, asrc, i, s) \
104 Y = ysrc[2 * i]; \
105 dst[2 * i] = r[Y] + g[Y] + b[Y] + (asrc[2 * i] << s); \
106 Y = ysrc[2 * i + 1]; \
107 dst[2 * i + 1] = r[Y] + g[Y] + b[Y] + (asrc[2 * i + 1] << s);
108
109 #define PUTRGB48(dst, src, i) \
110 Y = src[ 2 * i]; \
111 dst[12 * i + 0] = dst[12 * i + 1] = r[Y]; \
112 dst[12 * i + 2] = dst[12 * i + 3] = g[Y]; \
113 dst[12 * i + 4] = dst[12 * i + 5] = b[Y]; \
114 Y = src[ 2 * i + 1]; \
115 dst[12 * i + 6] = dst[12 * i + 7] = r[Y]; \
116 dst[12 * i + 8] = dst[12 * i + 9] = g[Y]; \
117 dst[12 * i + 10] = dst[12 * i + 11] = b[Y];
118
119 #define PUTBGR48(dst, src, i) \
120 Y = src[2 * i]; \
121 dst[12 * i + 0] = dst[12 * i + 1] = b[Y]; \
122 dst[12 * i + 2] = dst[12 * i + 3] = g[Y]; \
123 dst[12 * i + 4] = dst[12 * i + 5] = r[Y]; \
124 Y = src[2 * i + 1]; \
125 dst[12 * i + 6] = dst[12 * i + 7] = b[Y]; \
126 dst[12 * i + 8] = dst[12 * i + 9] = g[Y]; \
127 dst[12 * i + 10] = dst[12 * i + 11] = r[Y];
128
129 #define YUV2RGBFUNC(func_name, dst_type, alpha) \
130 static int func_name(SwsContext *c, const uint8_t *src[], \
131 int srcStride[], int srcSliceY, int srcSliceH, \
132 uint8_t *dst[], int dstStride[]) \
133 { \
134 int y; \
135 \
136 if (!alpha && c->srcFormat == AV_PIX_FMT_YUV422P) { \
137 srcStride[1] *= 2; \
138 srcStride[2] *= 2; \
139 } \
140 for (y = 0; y < srcSliceH; y += 2) { \
141 int yd = y + srcSliceY; \
142 dst_type *dst_1 = \
143 (dst_type *)(dst[0] + (yd) * dstStride[0]); \
144 dst_type *dst_2 = \
145 (dst_type *)(dst[0] + (yd + 1) * dstStride[0]); \
146 dst_type av_unused *r, *g, *b; \
147 const uint8_t *py_1 = src[0] + y * srcStride[0]; \
148 const uint8_t *py_2 = py_1 + srcStride[0]; \
149 const uint8_t *pu = src[1] + (y >> 1) * srcStride[1]; \
150 const uint8_t *pv = src[2] + (y >> 1) * srcStride[2]; \
151 const uint8_t av_unused *pa_1, *pa_2; \
152 unsigned int h_size = c->dstW >> 3; \
153 if (alpha) { \
154 pa_1 = src[3] + y * srcStride[3]; \
155 pa_2 = pa_1 + srcStride[3]; \
156 } \
157 while (h_size--) { \
158 int av_unused U, V, Y; \
159
160 #define ENDYUV2RGBLINE(dst_delta, ss) \
161 pu += 4 >> ss; \
162 pv += 4 >> ss; \
163 py_1 += 8 >> ss; \
164 py_2 += 8 >> ss; \
165 dst_1 += dst_delta >> ss; \
166 dst_2 += dst_delta >> ss; \
167 } \
168 if (c->dstW & (4 >> ss)) { \
169 int av_unused Y, U, V; \
170
171 #define ENDYUV2RGBFUNC() \
172 } \
173 } \
174 return srcSliceH; \
175 }
176
177 #define CLOSEYUV2RGBFUNC(dst_delta) \
178 ENDYUV2RGBLINE(dst_delta, 0) \
179 ENDYUV2RGBFUNC()
180
181 YUV2RGBFUNC(yuv2rgb_c_48, uint8_t, 0)
182 LOADCHROMA(0);
183 PUTRGB48(dst_1, py_1, 0);
184 PUTRGB48(dst_2, py_2, 0);
185
186 LOADCHROMA(1);
187 PUTRGB48(dst_2, py_2, 1);
188 PUTRGB48(dst_1, py_1, 1);
189
190 LOADCHROMA(2);
191 PUTRGB48(dst_1, py_1, 2);
192 PUTRGB48(dst_2, py_2, 2);
193
194 LOADCHROMA(3);
195 PUTRGB48(dst_2, py_2, 3);
196 PUTRGB48(dst_1, py_1, 3);
197 ENDYUV2RGBLINE(48, 0)
198 LOADCHROMA(0);
199 PUTRGB48(dst_1, py_1, 0);
200 PUTRGB48(dst_2, py_2, 0);
201
202 LOADCHROMA(1);
203 PUTRGB48(dst_2, py_2, 1);
204 PUTRGB48(dst_1, py_1, 1);
205 ENDYUV2RGBLINE(48, 1)
206 LOADCHROMA(0);
207 PUTRGB48(dst_1, py_1, 0);
208 PUTRGB48(dst_2, py_2, 0);
209 ENDYUV2RGBFUNC()
210
211 YUV2RGBFUNC(yuv2rgb_c_bgr48, uint8_t, 0)
212 LOADCHROMA(0);
213 PUTBGR48(dst_1, py_1, 0);
214 PUTBGR48(dst_2, py_2, 0);
215
216 LOADCHROMA(1);
217 PUTBGR48(dst_2, py_2, 1);
218 PUTBGR48(dst_1, py_1, 1);
219
220 LOADCHROMA(2);
221 PUTBGR48(dst_1, py_1, 2);
222 PUTBGR48(dst_2, py_2, 2);
223
224 LOADCHROMA(3);
225 PUTBGR48(dst_2, py_2, 3);
226 PUTBGR48(dst_1, py_1, 3);
227 ENDYUV2RGBLINE(48, 0)
228 LOADCHROMA(0);
229 PUTBGR48(dst_1, py_1, 0);
230 PUTBGR48(dst_2, py_2, 0);
231
232 LOADCHROMA(1);
233 PUTBGR48(dst_2, py_2, 1);
234 PUTBGR48(dst_1, py_1, 1);
235 ENDYUV2RGBLINE(48, 1)
236 LOADCHROMA(0);
237 PUTBGR48(dst_1, py_1, 0);
238 PUTBGR48(dst_2, py_2, 0);
239 ENDYUV2RGBFUNC()
240
241 YUV2RGBFUNC(yuv2rgb_c_32, uint32_t, 0)
242 LOADCHROMA(0);
243 PUTRGB(dst_1, py_1, 0);
244 PUTRGB(dst_2, py_2, 0);
245
246 LOADCHROMA(1);
247 PUTRGB(dst_2, py_2, 1);
248 PUTRGB(dst_1, py_1, 1);
249
250 LOADCHROMA(2);
251 PUTRGB(dst_1, py_1, 2);
252 PUTRGB(dst_2, py_2, 2);
253
254 LOADCHROMA(3);
255 PUTRGB(dst_2, py_2, 3);
256 PUTRGB(dst_1, py_1, 3);
257 ENDYUV2RGBLINE(8, 0)
258 LOADCHROMA(0);
259 PUTRGB(dst_1, py_1, 0);
260 PUTRGB(dst_2, py_2, 0);
261
262 LOADCHROMA(1);
263 PUTRGB(dst_2, py_2, 1);
264 PUTRGB(dst_1, py_1, 1);
265 ENDYUV2RGBLINE(8, 1)
266 LOADCHROMA(0);
267 PUTRGB(dst_1, py_1, 0);
268 PUTRGB(dst_2, py_2, 0);
269 ENDYUV2RGBFUNC()
270
271 #if HAVE_BIGENDIAN
272 YUV2RGBFUNC(yuva2argb_c, uint32_t, 1)
273 #else
274 YUV2RGBFUNC(yuva2rgba_c, uint32_t, 1)
275 #endif
276 LOADCHROMA(0);
277 PUTRGBA(dst_1, py_1, pa_1, 0, 24);
278 PUTRGBA(dst_2, py_2, pa_2, 0, 24);
279
280 LOADCHROMA(1);
281 PUTRGBA(dst_2, py_2, pa_2, 1, 24);
282 PUTRGBA(dst_1, py_1, pa_1, 1, 24);
283
284 LOADCHROMA(2);
285 PUTRGBA(dst_1, py_1, pa_1, 2, 24);
286 PUTRGBA(dst_2, py_2, pa_2, 2, 24);
287
288 LOADCHROMA(3);
289 PUTRGBA(dst_2, py_2, pa_2, 3, 24);
290 PUTRGBA(dst_1, py_1, pa_1, 3, 24);
291 pa_1 += 8;
292 pa_2 += 8;
293 ENDYUV2RGBLINE(8, 0)
294 LOADCHROMA(0);
295 PUTRGBA(dst_1, py_1, pa_1, 0, 24);
296 PUTRGBA(dst_2, py_2, pa_2, 0, 24);
297
298 LOADCHROMA(1);
299 PUTRGBA(dst_2, py_2, pa_2, 1, 24);
300 PUTRGBA(dst_1, py_1, pa_1, 1, 24);
301 pa_1 += 4;
302 pa_2 += 4;
303 ENDYUV2RGBLINE(8, 1)
304 LOADCHROMA(0);
305 PUTRGBA(dst_1, py_1, pa_1, 0, 24);
306 PUTRGBA(dst_2, py_2, pa_2, 0, 24);
307 ENDYUV2RGBFUNC()
308
309 #if HAVE_BIGENDIAN
310 YUV2RGBFUNC(yuva2rgba_c, uint32_t, 1)
311 #else
312 YUV2RGBFUNC(yuva2argb_c, uint32_t, 1)
313 #endif
314 LOADCHROMA(0);
315 PUTRGBA(dst_1, py_1, pa_1, 0, 0);
316 PUTRGBA(dst_2, py_2, pa_2, 0, 0);
317
318 LOADCHROMA(1);
319 PUTRGBA(dst_2, py_2, pa_2, 1, 0);
320 PUTRGBA(dst_1, py_1, pa_1, 1, 0);
321
322 LOADCHROMA(2);
323 PUTRGBA(dst_1, py_1, pa_1, 2, 0);
324 PUTRGBA(dst_2, py_2, pa_2, 2, 0);
325
326 LOADCHROMA(3);
327 PUTRGBA(dst_2, py_2, pa_2, 3, 0);
328 PUTRGBA(dst_1, py_1, pa_1, 3, 0);
329 pa_1 += 8;
330 pa_2 += 8;
331 ENDYUV2RGBLINE(8, 0)
332 LOADCHROMA(0);
333 PUTRGBA(dst_1, py_1, pa_1, 0, 0);
334 PUTRGBA(dst_2, py_2, pa_2, 0, 0);
335
336 LOADCHROMA(1);
337 PUTRGBA(dst_2, py_2, pa_2, 1, 0);
338 PUTRGBA(dst_1, py_1, pa_1, 1, 0);
339 pa_1 += 4;
340 pa_2 += 4;
341 ENDYUV2RGBLINE(8, 1)
342 LOADCHROMA(0);
343 PUTRGBA(dst_1, py_1, pa_1, 0, 0);
344 PUTRGBA(dst_2, py_2, pa_2, 0, 0);
345 ENDYUV2RGBFUNC()
346
347 YUV2RGBFUNC(yuv2rgb_c_24_rgb, uint8_t, 0)
348 LOADCHROMA(0);
349 PUTRGB24(dst_1, py_1, 0);
350 PUTRGB24(dst_2, py_2, 0);
351
352 LOADCHROMA(1);
353 PUTRGB24(dst_2, py_2, 1);
354 PUTRGB24(dst_1, py_1, 1);
355
356 LOADCHROMA(2);
357 PUTRGB24(dst_1, py_1, 2);
358 PUTRGB24(dst_2, py_2, 2);
359
360 LOADCHROMA(3);
361 PUTRGB24(dst_2, py_2, 3);
362 PUTRGB24(dst_1, py_1, 3);
363 ENDYUV2RGBLINE(24, 0)
364 LOADCHROMA(0);
365 PUTRGB24(dst_1, py_1, 0);
366 PUTRGB24(dst_2, py_2, 0);
367
368 LOADCHROMA(1);
369 PUTRGB24(dst_2, py_2, 1);
370 PUTRGB24(dst_1, py_1, 1);
371 ENDYUV2RGBLINE(24, 1)
372 LOADCHROMA(0);
373 PUTRGB24(dst_1, py_1, 0);
374 PUTRGB24(dst_2, py_2, 0);
375 ENDYUV2RGBFUNC()
376
377 // only trivial mods from yuv2rgb_c_24_rgb
378 YUV2RGBFUNC(yuv2rgb_c_24_bgr, uint8_t, 0)
379 LOADCHROMA(0);
380 PUTBGR24(dst_1, py_1, 0);
381 PUTBGR24(dst_2, py_2, 0);
382
383 LOADCHROMA(1);
384 PUTBGR24(dst_2, py_2, 1);
385 PUTBGR24(dst_1, py_1, 1);
386
387 LOADCHROMA(2);
388 PUTBGR24(dst_1, py_1, 2);
389 PUTBGR24(dst_2, py_2, 2);
390
391 LOADCHROMA(3);
392 PUTBGR24(dst_2, py_2, 3);
393 PUTBGR24(dst_1, py_1, 3);
394 ENDYUV2RGBLINE(24, 0)
395 LOADCHROMA(0);
396 PUTBGR24(dst_1, py_1, 0);
397 PUTBGR24(dst_2, py_2, 0);
398
399 LOADCHROMA(1);
400 PUTBGR24(dst_2, py_2, 1);
401 PUTBGR24(dst_1, py_1, 1);
402 ENDYUV2RGBLINE(24, 1)
403 LOADCHROMA(0);
404 PUTBGR24(dst_1, py_1, 0);
405 PUTBGR24(dst_2, py_2, 0);
406 ENDYUV2RGBFUNC()
407
408 YUV2RGBFUNC(yuv2rgb_c_16_ordered_dither, uint16_t, 0)
409 const uint8_t *d16 = ff_dither_2x2_8[y & 1];
410 const uint8_t *e16 = ff_dither_2x2_4[y & 1];
411 const uint8_t *f16 = ff_dither_2x2_8[(y & 1)^1];
412
413 #define PUTRGB16(dst, src, i, o) \
414 Y = src[2 * i]; \
415 dst[2 * i] = r[Y + d16[0 + o]] + \
416 g[Y + e16[0 + o]] + \
417 b[Y + f16[0 + o]]; \
418 Y = src[2 * i + 1]; \
419 dst[2 * i + 1] = r[Y + d16[1 + o]] + \
420 g[Y + e16[1 + o]] + \
421 b[Y + f16[1 + o]];
422 LOADCHROMA(0);
423 PUTRGB16(dst_1, py_1, 0, 0);
424 PUTRGB16(dst_2, py_2, 0, 0 + 8);
425
426 LOADCHROMA(1);
427 PUTRGB16(dst_2, py_2, 1, 2 + 8);
428 PUTRGB16(dst_1, py_1, 1, 2);
429
430 LOADCHROMA(2);
431 PUTRGB16(dst_1, py_1, 2, 4);
432 PUTRGB16(dst_2, py_2, 2, 4 + 8);
433
434 LOADCHROMA(3);
435 PUTRGB16(dst_2, py_2, 3, 6 + 8);
436 PUTRGB16(dst_1, py_1, 3, 6);
437 CLOSEYUV2RGBFUNC(8)
438
439 YUV2RGBFUNC(yuv2rgb_c_15_ordered_dither, uint16_t, 0)
440 const uint8_t *d16 = ff_dither_2x2_8[y & 1];
441 const uint8_t *e16 = ff_dither_2x2_8[(y & 1)^1];
442
443 #define PUTRGB15(dst, src, i, o) \
444 Y = src[2 * i]; \
445 dst[2 * i] = r[Y + d16[0 + o]] + \
446 g[Y + d16[1 + o]] + \
447 b[Y + e16[0 + o]]; \
448 Y = src[2 * i + 1]; \
449 dst[2 * i + 1] = r[Y + d16[1 + o]] + \
450 g[Y + d16[0 + o]] + \
451 b[Y + e16[1 + o]];
452 LOADCHROMA(0);
453 PUTRGB15(dst_1, py_1, 0, 0);
454 PUTRGB15(dst_2, py_2, 0, 0 + 8);
455
456 LOADCHROMA(1);
457 PUTRGB15(dst_2, py_2, 1, 2 + 8);
458 PUTRGB15(dst_1, py_1, 1, 2);
459
460 LOADCHROMA(2);
461 PUTRGB15(dst_1, py_1, 2, 4);
462 PUTRGB15(dst_2, py_2, 2, 4 + 8);
463
464 LOADCHROMA(3);
465 PUTRGB15(dst_2, py_2, 3, 6 + 8);
466 PUTRGB15(dst_1, py_1, 3, 6);
467 CLOSEYUV2RGBFUNC(8)
468
469 // r, g, b, dst_1, dst_2
470 YUV2RGBFUNC(yuv2rgb_c_12_ordered_dither, uint16_t, 0)
471 const uint8_t *d16 = ff_dither_4x4_16[y & 3];
472
473 #define PUTRGB12(dst, src, i, o) \
474 Y = src[2 * i]; \
475 dst[2 * i] = r[Y + d16[0 + o]] + \
476 g[Y + d16[0 + o]] + \
477 b[Y + d16[0 + o]]; \
478 Y = src[2 * i + 1]; \
479 dst[2 * i + 1] = r[Y + d16[1 + o]] + \
480 g[Y + d16[1 + o]] + \
481 b[Y + d16[1 + o]];
482
483 LOADCHROMA(0);
484 PUTRGB12(dst_1, py_1, 0, 0);
485 PUTRGB12(dst_2, py_2, 0, 0 + 8);
486
487 LOADCHROMA(1);
488 PUTRGB12(dst_2, py_2, 1, 2 + 8);
489 PUTRGB12(dst_1, py_1, 1, 2);
490
491 LOADCHROMA(2);
492 PUTRGB12(dst_1, py_1, 2, 4);
493 PUTRGB12(dst_2, py_2, 2, 4 + 8);
494
495 LOADCHROMA(3);
496 PUTRGB12(dst_2, py_2, 3, 6 + 8);
497 PUTRGB12(dst_1, py_1, 3, 6);
498 CLOSEYUV2RGBFUNC(8)
499
500 // r, g, b, dst_1, dst_2
501 YUV2RGBFUNC(yuv2rgb_c_8_ordered_dither, uint8_t, 0)
502 const uint8_t *d32 = ff_dither_8x8_32[yd & 7];
503 const uint8_t *d64 = ff_dither_8x8_73[yd & 7];
504
505 #define PUTRGB8(dst, src, i, o) \
506 Y = src[2 * i]; \
507 dst[2 * i] = r[Y + d32[0 + o]] + \
508 g[Y + d32[0 + o]] + \
509 b[Y + d64[0 + o]]; \
510 Y = src[2 * i + 1]; \
511 dst[2 * i + 1] = r[Y + d32[1 + o]] + \
512 g[Y + d32[1 + o]] + \
513 b[Y + d64[1 + o]];
514
515 LOADCHROMA(0);
516 PUTRGB8(dst_1, py_1, 0, 0);
517 PUTRGB8(dst_2, py_2, 0, 0 + 8);
518
519 LOADCHROMA(1);
520 PUTRGB8(dst_2, py_2, 1, 2 + 8);
521 PUTRGB8(dst_1, py_1, 1, 2);
522
523 LOADCHROMA(2);
524 PUTRGB8(dst_1, py_1, 2, 4);
525 PUTRGB8(dst_2, py_2, 2, 4 + 8);
526
527 LOADCHROMA(3);
528 PUTRGB8(dst_2, py_2, 3, 6 + 8);
529 PUTRGB8(dst_1, py_1, 3, 6);
530
531 ENDYUV2RGBLINE(8, 0)
532 const uint8_t *d32 = ff_dither_8x8_32[yd & 7];
533 const uint8_t *d64 = ff_dither_8x8_73[yd & 7];
534 LOADCHROMA(0);
535 PUTRGB8(dst_1, py_1, 0, 0);
536 PUTRGB8(dst_2, py_2, 0, 0 + 8);
537
538 LOADCHROMA(1);
539 PUTRGB8(dst_2, py_2, 1, 2 + 8);
540 PUTRGB8(dst_1, py_1, 1, 2);
541
542 ENDYUV2RGBLINE(8, 1)
543 const uint8_t *d32 = ff_dither_8x8_32[yd & 7];
544 const uint8_t *d64 = ff_dither_8x8_73[yd & 7];
545 LOADCHROMA(0);
546 PUTRGB8(dst_1, py_1, 0, 0);
547 PUTRGB8(dst_2, py_2, 0, 0 + 8);
548
549 ENDYUV2RGBFUNC()
550
551
552 YUV2RGBFUNC(yuv2rgb_c_4_ordered_dither, uint8_t, 0)
553 const uint8_t * d64 = ff_dither_8x8_73[yd & 7];
554 const uint8_t *d128 = ff_dither_8x8_220[yd & 7];
555 int acc;
556
557 #define PUTRGB4D(dst, src, i, o) \
558 Y = src[2 * i]; \
559 acc = r[Y + d128[0 + o]] + \
560 g[Y + d64[0 + o]] + \
561 b[Y + d128[0 + o]]; \
562 Y = src[2 * i + 1]; \
563 acc |= (r[Y + d128[1 + o]] + \
564 g[Y + d64[1 + o]] + \
565 b[Y + d128[1 + o]]) << 4; \
566 dst[i] = acc;
567
568 LOADCHROMA(0);
569 PUTRGB4D(dst_1, py_1, 0, 0);
570 PUTRGB4D(dst_2, py_2, 0, 0 + 8);
571
572 LOADCHROMA(1);
573 PUTRGB4D(dst_2, py_2, 1, 2 + 8);
574 PUTRGB4D(dst_1, py_1, 1, 2);
575
576 LOADCHROMA(2);
577 PUTRGB4D(dst_1, py_1, 2, 4);
578 PUTRGB4D(dst_2, py_2, 2, 4 + 8);
579
580 LOADCHROMA(3);
581 PUTRGB4D(dst_2, py_2, 3, 6 + 8);
582 PUTRGB4D(dst_1, py_1, 3, 6);
583
584 ENDYUV2RGBLINE(4, 0)
585 const uint8_t * d64 = ff_dither_8x8_73[yd & 7];
586 const uint8_t *d128 = ff_dither_8x8_220[yd & 7];
587 int acc;
588 LOADCHROMA(0);
589 PUTRGB4D(dst_1, py_1, 0, 0);
590 PUTRGB4D(dst_2, py_2, 0, 0 + 8);
591
592 LOADCHROMA(1);
593 PUTRGB4D(dst_2, py_2, 1, 2 + 8);
594 PUTRGB4D(dst_1, py_1, 1, 2);
595
596 ENDYUV2RGBLINE(4, 1)
597 const uint8_t * d64 = ff_dither_8x8_73[yd & 7];
598 const uint8_t *d128 = ff_dither_8x8_220[yd & 7];
599 int acc;
600 LOADCHROMA(0);
601 PUTRGB4D(dst_1, py_1, 0, 0);
602 PUTRGB4D(dst_2, py_2, 0, 0 + 8);
603 ENDYUV2RGBFUNC()
604
605 YUV2RGBFUNC(yuv2rgb_c_4b_ordered_dither, uint8_t, 0)
606 const uint8_t *d64 = ff_dither_8x8_73[yd & 7];
607 const uint8_t *d128 = ff_dither_8x8_220[yd & 7];
608
609 #define PUTRGB4DB(dst, src, i, o) \
610 Y = src[2 * i]; \
611 dst[2 * i] = r[Y + d128[0 + o]] + \
612 g[Y + d64[0 + o]] + \
613 b[Y + d128[0 + o]]; \
614 Y = src[2 * i + 1]; \
615 dst[2 * i + 1] = r[Y + d128[1 + o]] + \
616 g[Y + d64[1 + o]] + \
617 b[Y + d128[1 + o]];
618
619 LOADCHROMA(0);
620 PUTRGB4DB(dst_1, py_1, 0, 0);
621 PUTRGB4DB(dst_2, py_2, 0, 0 + 8);
622
623 LOADCHROMA(1);
624 PUTRGB4DB(dst_2, py_2, 1, 2 + 8);
625 PUTRGB4DB(dst_1, py_1, 1, 2);
626
627 LOADCHROMA(2);
628 PUTRGB4DB(dst_1, py_1, 2, 4);
629 PUTRGB4DB(dst_2, py_2, 2, 4 + 8);
630
631 LOADCHROMA(3);
632 PUTRGB4DB(dst_2, py_2, 3, 6 + 8);
633 PUTRGB4DB(dst_1, py_1, 3, 6);
634 ENDYUV2RGBLINE(8, 0)
635 const uint8_t *d64 = ff_dither_8x8_73[yd & 7];
636 const uint8_t *d128 = ff_dither_8x8_220[yd & 7];
637 LOADCHROMA(0);
638 PUTRGB4DB(dst_1, py_1, 0, 0);
639 PUTRGB4DB(dst_2, py_2, 0, 0 + 8);
640
641 LOADCHROMA(1);
642 PUTRGB4DB(dst_2, py_2, 1, 2 + 8);
643 PUTRGB4DB(dst_1, py_1, 1, 2);
644 ENDYUV2RGBLINE(8, 1)
645 const uint8_t *d64 = ff_dither_8x8_73[yd & 7];
646 const uint8_t *d128 = ff_dither_8x8_220[yd & 7];
647 LOADCHROMA(0);
648 PUTRGB4DB(dst_1, py_1, 0, 0);
649 PUTRGB4DB(dst_2, py_2, 0, 0 + 8);
650 ENDYUV2RGBFUNC()
651
652 YUV2RGBFUNC(yuv2rgb_c_1_ordered_dither, uint8_t, 0)
653 const uint8_t *d128 = ff_dither_8x8_220[yd & 7];
654 char out_1 = 0, out_2 = 0;
655 g = c->table_gU[128 + YUVRGB_TABLE_HEADROOM] + c->table_gV[128 + YUVRGB_TABLE_HEADROOM];
656
657 #define PUTRGB1(out, src, i, o) \
658 Y = src[2 * i]; \
659 out += out + g[Y + d128[0 + o]]; \
660 Y = src[2 * i + 1]; \
661 out += out + g[Y + d128[1 + o]];
662
663 PUTRGB1(out_1, py_1, 0, 0);
664 PUTRGB1(out_2, py_2, 0, 0 + 8);
665
666 PUTRGB1(out_2, py_2, 1, 2 + 8);
667 PUTRGB1(out_1, py_1, 1, 2);
668
669 PUTRGB1(out_1, py_1, 2, 4);
670 PUTRGB1(out_2, py_2, 2, 4 + 8);
671
672 PUTRGB1(out_2, py_2, 3, 6 + 8);
673 PUTRGB1(out_1, py_1, 3, 6);
674
675 dst_1[0] = out_1;
676 dst_2[0] = out_2;
677 CLOSEYUV2RGBFUNC(1)
678
ff_yuv2rgb_get_func_ptr(SwsContext * c)679 SwsFunc ff_yuv2rgb_get_func_ptr(SwsContext *c)
680 {
681 SwsFunc t = NULL;
682
683 if (ARCH_PPC)
684 t = ff_yuv2rgb_init_ppc(c);
685 if (ARCH_X86)
686 t = ff_yuv2rgb_init_x86(c);
687
688 if (t)
689 return t;
690
691 av_log(c, AV_LOG_WARNING,
692 "No accelerated colorspace conversion found from %s to %s.\n",
693 av_get_pix_fmt_name(c->srcFormat), av_get_pix_fmt_name(c->dstFormat));
694
695 switch (c->dstFormat) {
696 case AV_PIX_FMT_BGR48BE:
697 case AV_PIX_FMT_BGR48LE:
698 return yuv2rgb_c_bgr48;
699 case AV_PIX_FMT_RGB48BE:
700 case AV_PIX_FMT_RGB48LE:
701 return yuv2rgb_c_48;
702 case AV_PIX_FMT_ARGB:
703 case AV_PIX_FMT_ABGR:
704 if (CONFIG_SWSCALE_ALPHA && isALPHA(c->srcFormat))
705 return yuva2argb_c;
706 case AV_PIX_FMT_RGBA:
707 case AV_PIX_FMT_BGRA:
708 return (CONFIG_SWSCALE_ALPHA && isALPHA(c->srcFormat)) ? yuva2rgba_c : yuv2rgb_c_32;
709 case AV_PIX_FMT_RGB24:
710 return yuv2rgb_c_24_rgb;
711 case AV_PIX_FMT_BGR24:
712 return yuv2rgb_c_24_bgr;
713 case AV_PIX_FMT_RGB565:
714 case AV_PIX_FMT_BGR565:
715 return yuv2rgb_c_16_ordered_dither;
716 case AV_PIX_FMT_RGB555:
717 case AV_PIX_FMT_BGR555:
718 return yuv2rgb_c_15_ordered_dither;
719 case AV_PIX_FMT_RGB444:
720 case AV_PIX_FMT_BGR444:
721 return yuv2rgb_c_12_ordered_dither;
722 case AV_PIX_FMT_RGB8:
723 case AV_PIX_FMT_BGR8:
724 return yuv2rgb_c_8_ordered_dither;
725 case AV_PIX_FMT_RGB4:
726 case AV_PIX_FMT_BGR4:
727 return yuv2rgb_c_4_ordered_dither;
728 case AV_PIX_FMT_RGB4_BYTE:
729 case AV_PIX_FMT_BGR4_BYTE:
730 return yuv2rgb_c_4b_ordered_dither;
731 case AV_PIX_FMT_MONOBLACK:
732 return yuv2rgb_c_1_ordered_dither;
733 }
734 return NULL;
735 }
736
fill_table(uint8_t * table[256+2* YUVRGB_TABLE_HEADROOM],const int elemsize,const int64_t inc,void * y_tab)737 static void fill_table(uint8_t* table[256 + 2*YUVRGB_TABLE_HEADROOM], const int elemsize,
738 const int64_t inc, void *y_tab)
739 {
740 int i;
741 uint8_t *y_table = y_tab;
742
743 y_table -= elemsize * (inc >> 9);
744
745 for (i = 0; i < 256 + 2*YUVRGB_TABLE_HEADROOM; i++) {
746 int64_t cb = av_clip_uint8(i-YUVRGB_TABLE_HEADROOM)*inc;
747 table[i] = y_table + elemsize * (cb >> 16);
748 }
749 }
750
fill_gv_table(int table[256+2* YUVRGB_TABLE_HEADROOM],const int elemsize,const int64_t inc)751 static void fill_gv_table(int table[256 + 2*YUVRGB_TABLE_HEADROOM], const int elemsize, const int64_t inc)
752 {
753 int i;
754 int off = -(inc >> 9);
755
756 for (i = 0; i < 256 + 2*YUVRGB_TABLE_HEADROOM; i++) {
757 int64_t cb = av_clip_uint8(i-YUVRGB_TABLE_HEADROOM)*inc;
758 table[i] = elemsize * (off + (cb >> 16));
759 }
760 }
761
roundToInt16(int64_t f)762 static uint16_t roundToInt16(int64_t f)
763 {
764 int r = (f + (1 << 15)) >> 16;
765
766 if (r < -0x7FFF)
767 return 0x8000;
768 else if (r > 0x7FFF)
769 return 0x7FFF;
770 else
771 return r;
772 }
773
ff_yuv2rgb_c_init_tables(SwsContext * c,const int inv_table[4],int fullRange,int brightness,int contrast,int saturation)774 av_cold int ff_yuv2rgb_c_init_tables(SwsContext *c, const int inv_table[4],
775 int fullRange, int brightness,
776 int contrast, int saturation)
777 {
778 const int isRgb = c->dstFormat == AV_PIX_FMT_RGB32 ||
779 c->dstFormat == AV_PIX_FMT_RGB32_1 ||
780 c->dstFormat == AV_PIX_FMT_BGR24 ||
781 c->dstFormat == AV_PIX_FMT_RGB565BE ||
782 c->dstFormat == AV_PIX_FMT_RGB565LE ||
783 c->dstFormat == AV_PIX_FMT_RGB555BE ||
784 c->dstFormat == AV_PIX_FMT_RGB555LE ||
785 c->dstFormat == AV_PIX_FMT_RGB444BE ||
786 c->dstFormat == AV_PIX_FMT_RGB444LE ||
787 c->dstFormat == AV_PIX_FMT_RGB8 ||
788 c->dstFormat == AV_PIX_FMT_RGB4 ||
789 c->dstFormat == AV_PIX_FMT_RGB4_BYTE ||
790 c->dstFormat == AV_PIX_FMT_MONOBLACK;
791 const int isNotNe = c->dstFormat == AV_PIX_FMT_NE(RGB565LE, RGB565BE) ||
792 c->dstFormat == AV_PIX_FMT_NE(RGB555LE, RGB555BE) ||
793 c->dstFormat == AV_PIX_FMT_NE(RGB444LE, RGB444BE) ||
794 c->dstFormat == AV_PIX_FMT_NE(BGR565LE, BGR565BE) ||
795 c->dstFormat == AV_PIX_FMT_NE(BGR555LE, BGR555BE) ||
796 c->dstFormat == AV_PIX_FMT_NE(BGR444LE, BGR444BE) ||
797 c->dstFormat == AV_PIX_FMT_NE(X2RGB10LE, X2RGB10BE);
798 const int bpp = c->dstFormatBpp;
799 uint8_t *y_table;
800 uint16_t *y_table16;
801 uint32_t *y_table32;
802 int i, base, rbase, gbase, bbase, av_uninit(abase), needAlpha;
803 const int yoffs = (fullRange ? 384 : 326) + YUVRGB_TABLE_LUMA_HEADROOM;
804 const int table_plane_size = 1024 + 2*YUVRGB_TABLE_LUMA_HEADROOM;
805
806 int64_t crv = inv_table[0];
807 int64_t cbu = inv_table[1];
808 int64_t cgu = -inv_table[2];
809 int64_t cgv = -inv_table[3];
810 int64_t cy = 1 << 16;
811 int64_t oy = 0;
812 int64_t yb = 0;
813
814 if (!fullRange) {
815 cy = (cy * 255) / 219;
816 oy = 16 << 16;
817 } else {
818 crv = (crv * 224) / 255;
819 cbu = (cbu * 224) / 255;
820 cgu = (cgu * 224) / 255;
821 cgv = (cgv * 224) / 255;
822 }
823
824 cy = (cy * contrast) >> 16;
825 crv = (crv * contrast * saturation) >> 32;
826 cbu = (cbu * contrast * saturation) >> 32;
827 cgu = (cgu * contrast * saturation) >> 32;
828 cgv = (cgv * contrast * saturation) >> 32;
829 oy -= 256 * brightness;
830
831 c->uOffset = 0x0400040004000400LL;
832 c->vOffset = 0x0400040004000400LL;
833 c->yCoeff = roundToInt16(cy * (1 << 13)) * 0x0001000100010001ULL;
834 c->vrCoeff = roundToInt16(crv * (1 << 13)) * 0x0001000100010001ULL;
835 c->ubCoeff = roundToInt16(cbu * (1 << 13)) * 0x0001000100010001ULL;
836 c->vgCoeff = roundToInt16(cgv * (1 << 13)) * 0x0001000100010001ULL;
837 c->ugCoeff = roundToInt16(cgu * (1 << 13)) * 0x0001000100010001ULL;
838 c->yOffset = roundToInt16(oy * (1 << 3)) * 0x0001000100010001ULL;
839
840 c->yuv2rgb_y_coeff = (int16_t)roundToInt16(cy * (1 << 13));
841 c->yuv2rgb_y_offset = (int16_t)roundToInt16(oy * (1 << 9));
842 c->yuv2rgb_v2r_coeff = (int16_t)roundToInt16(crv * (1 << 13));
843 c->yuv2rgb_v2g_coeff = (int16_t)roundToInt16(cgv * (1 << 13));
844 c->yuv2rgb_u2g_coeff = (int16_t)roundToInt16(cgu * (1 << 13));
845 c->yuv2rgb_u2b_coeff = (int16_t)roundToInt16(cbu * (1 << 13));
846
847 //scale coefficients by cy
848 crv = ((crv * (1 << 16)) + 0x8000) / FFMAX(cy, 1);
849 cbu = ((cbu * (1 << 16)) + 0x8000) / FFMAX(cy, 1);
850 cgu = ((cgu * (1 << 16)) + 0x8000) / FFMAX(cy, 1);
851 cgv = ((cgv * (1 << 16)) + 0x8000) / FFMAX(cy, 1);
852
853 av_freep(&c->yuvTable);
854
855 #define ALLOC_YUV_TABLE(x) \
856 c->yuvTable = av_malloc(x); \
857 if (!c->yuvTable) \
858 return AVERROR(ENOMEM);
859 switch (bpp) {
860 case 1:
861 ALLOC_YUV_TABLE(table_plane_size);
862 y_table = c->yuvTable;
863 yb = -(384 << 16) - YUVRGB_TABLE_LUMA_HEADROOM*cy - oy;
864 for (i = 0; i < table_plane_size - 110; i++) {
865 y_table[i + 110] = av_clip_uint8((yb + 0x8000) >> 16) >> 7;
866 yb += cy;
867 }
868 fill_table(c->table_gU, 1, cgu, y_table + yoffs);
869 fill_gv_table(c->table_gV, 1, cgv);
870 break;
871 case 4:
872 case 4 | 128:
873 rbase = isRgb ? 3 : 0;
874 gbase = 1;
875 bbase = isRgb ? 0 : 3;
876 ALLOC_YUV_TABLE(table_plane_size * 3);
877 y_table = c->yuvTable;
878 yb = -(384 << 16) - YUVRGB_TABLE_LUMA_HEADROOM*cy - oy;
879 for (i = 0; i < table_plane_size - 110; i++) {
880 int yval = av_clip_uint8((yb + 0x8000) >> 16);
881 y_table[i + 110] = (yval >> 7) << rbase;
882 y_table[i + 37 + table_plane_size] = ((yval + 43) / 85) << gbase;
883 y_table[i + 110 + 2*table_plane_size] = (yval >> 7) << bbase;
884 yb += cy;
885 }
886 fill_table(c->table_rV, 1, crv, y_table + yoffs);
887 fill_table(c->table_gU, 1, cgu, y_table + yoffs + table_plane_size);
888 fill_table(c->table_bU, 1, cbu, y_table + yoffs + 2*table_plane_size);
889 fill_gv_table(c->table_gV, 1, cgv);
890 break;
891 case 8:
892 rbase = isRgb ? 5 : 0;
893 gbase = isRgb ? 2 : 3;
894 bbase = isRgb ? 0 : 6;
895 ALLOC_YUV_TABLE(table_plane_size * 3);
896 y_table = c->yuvTable;
897 yb = -(384 << 16) - YUVRGB_TABLE_LUMA_HEADROOM*cy - oy;
898 for (i = 0; i < table_plane_size - 38; i++) {
899 int yval = av_clip_uint8((yb + 0x8000) >> 16);
900 y_table[i + 16] = ((yval + 18) / 36) << rbase;
901 y_table[i + 16 + table_plane_size] = ((yval + 18) / 36) << gbase;
902 y_table[i + 37 + 2*table_plane_size] = ((yval + 43) / 85) << bbase;
903 yb += cy;
904 }
905 fill_table(c->table_rV, 1, crv, y_table + yoffs);
906 fill_table(c->table_gU, 1, cgu, y_table + yoffs + table_plane_size);
907 fill_table(c->table_bU, 1, cbu, y_table + yoffs + 2*table_plane_size);
908 fill_gv_table(c->table_gV, 1, cgv);
909 break;
910 case 12:
911 rbase = isRgb ? 8 : 0;
912 gbase = 4;
913 bbase = isRgb ? 0 : 8;
914 ALLOC_YUV_TABLE(table_plane_size * 3 * 2);
915 y_table16 = c->yuvTable;
916 yb = -(384 << 16) - YUVRGB_TABLE_LUMA_HEADROOM*cy - oy;
917 for (i = 0; i < table_plane_size; i++) {
918 uint8_t yval = av_clip_uint8((yb + 0x8000) >> 16);
919 y_table16[i] = (yval >> 4) << rbase;
920 y_table16[i + table_plane_size] = (yval >> 4) << gbase;
921 y_table16[i + 2*table_plane_size] = (yval >> 4) << bbase;
922 yb += cy;
923 }
924 if (isNotNe)
925 for (i = 0; i < table_plane_size * 3; i++)
926 y_table16[i] = av_bswap16(y_table16[i]);
927 fill_table(c->table_rV, 2, crv, y_table16 + yoffs);
928 fill_table(c->table_gU, 2, cgu, y_table16 + yoffs + table_plane_size);
929 fill_table(c->table_bU, 2, cbu, y_table16 + yoffs + 2*table_plane_size);
930 fill_gv_table(c->table_gV, 2, cgv);
931 break;
932 case 15:
933 case 16:
934 rbase = isRgb ? bpp - 5 : 0;
935 gbase = 5;
936 bbase = isRgb ? 0 : (bpp - 5);
937 ALLOC_YUV_TABLE(table_plane_size * 3 * 2);
938 y_table16 = c->yuvTable;
939 yb = -(384 << 16) - YUVRGB_TABLE_LUMA_HEADROOM*cy - oy;
940 for (i = 0; i < table_plane_size; i++) {
941 uint8_t yval = av_clip_uint8((yb + 0x8000) >> 16);
942 y_table16[i] = (yval >> 3) << rbase;
943 y_table16[i + table_plane_size] = (yval >> (18 - bpp)) << gbase;
944 y_table16[i + 2*table_plane_size] = (yval >> 3) << bbase;
945 yb += cy;
946 }
947 if (isNotNe)
948 for (i = 0; i < table_plane_size * 3; i++)
949 y_table16[i] = av_bswap16(y_table16[i]);
950 fill_table(c->table_rV, 2, crv, y_table16 + yoffs);
951 fill_table(c->table_gU, 2, cgu, y_table16 + yoffs + table_plane_size);
952 fill_table(c->table_bU, 2, cbu, y_table16 + yoffs + 2*table_plane_size);
953 fill_gv_table(c->table_gV, 2, cgv);
954 break;
955 case 24:
956 case 48:
957 ALLOC_YUV_TABLE(table_plane_size);
958 y_table = c->yuvTable;
959 yb = -(384 << 16) - YUVRGB_TABLE_LUMA_HEADROOM*cy - oy;
960 for (i = 0; i < table_plane_size; i++) {
961 y_table[i] = av_clip_uint8((yb + 0x8000) >> 16);
962 yb += cy;
963 }
964 fill_table(c->table_rV, 1, crv, y_table + yoffs);
965 fill_table(c->table_gU, 1, cgu, y_table + yoffs);
966 fill_table(c->table_bU, 1, cbu, y_table + yoffs);
967 fill_gv_table(c->table_gV, 1, cgv);
968 break;
969 case 30:
970 rbase = 20;
971 gbase = 10;
972 bbase = 0;
973 needAlpha = CONFIG_SWSCALE_ALPHA && isALPHA(c->srcFormat);
974 if (!needAlpha)
975 abase = 30;
976 ALLOC_YUV_TABLE(table_plane_size * 3 * 4);
977 y_table32 = c->yuvTable;
978 yb = -(384 << 16) - YUVRGB_TABLE_LUMA_HEADROOM*cy - oy;
979 for (i = 0; i < table_plane_size; i++) {
980 unsigned yval = av_clip_uint8((yb + 0x8000) >> 16);
981 y_table32[i]= (yval << rbase) + (needAlpha ? 0 : (255u << abase));
982 y_table32[i + table_plane_size] = yval << gbase;
983 y_table32[i + 2 * table_plane_size] = yval << bbase;
984 yb += cy;
985 }
986 if (isNotNe) {
987 for (i = 0; i < table_plane_size * 3; i++)
988 y_table32[i] = av_bswap32(y_table32[i]);
989 }
990 fill_table(c->table_rV, 4, crv, y_table32 + yoffs);
991 fill_table(c->table_gU, 4, cgu, y_table32 + yoffs + table_plane_size);
992 fill_table(c->table_bU, 4, cbu, y_table32 + yoffs + 2 * table_plane_size);
993 fill_gv_table(c->table_gV, 4, cgv);
994 break;
995 case 32:
996 case 64:
997 base = (c->dstFormat == AV_PIX_FMT_RGB32_1 ||
998 c->dstFormat == AV_PIX_FMT_BGR32_1) ? 8 : 0;
999 rbase = base + (isRgb ? 16 : 0);
1000 gbase = base + 8;
1001 bbase = base + (isRgb ? 0 : 16);
1002 needAlpha = CONFIG_SWSCALE_ALPHA && isALPHA(c->srcFormat);
1003 if (!needAlpha)
1004 abase = (base + 24) & 31;
1005 ALLOC_YUV_TABLE(table_plane_size * 3 * 4);
1006 y_table32 = c->yuvTable;
1007 yb = -(384 << 16) - YUVRGB_TABLE_LUMA_HEADROOM*cy - oy;
1008 for (i = 0; i < table_plane_size; i++) {
1009 unsigned yval = av_clip_uint8((yb + 0x8000) >> 16);
1010 y_table32[i] = (yval << rbase) +
1011 (needAlpha ? 0 : (255u << abase));
1012 y_table32[i + table_plane_size] = yval << gbase;
1013 y_table32[i + 2*table_plane_size] = yval << bbase;
1014 yb += cy;
1015 }
1016 fill_table(c->table_rV, 4, crv, y_table32 + yoffs);
1017 fill_table(c->table_gU, 4, cgu, y_table32 + yoffs + table_plane_size);
1018 fill_table(c->table_bU, 4, cbu, y_table32 + yoffs + 2*table_plane_size);
1019 fill_gv_table(c->table_gV, 4, cgv);
1020 break;
1021 default:
1022 if(!isPlanar(c->dstFormat) || bpp <= 24)
1023 av_log(c, AV_LOG_ERROR, "%ibpp not supported by yuv2rgb\n", bpp);
1024 return AVERROR(EINVAL);
1025 }
1026 return 0;
1027 }
1028