FFmpeg
yuv2rgb.c
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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 
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 
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 
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 
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 
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 
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 }
SwsContext::vrCoeff
uint64_t vrCoeff
Definition: swscale_internal.h:472
dst_1
dst_1[0]
Definition: yuv2rgb.c:675
NULL
#define NULL
Definition: coverity.c:32
out_2
char out_2
Definition: yuv2rgb.c:654
YUVRGB_TABLE_HEADROOM
#define YUVRGB_TABLE_HEADROOM
Definition: swscale_internal.h:39
pa_1
pa_1
Definition: yuv2rgb.c:291
AV_LOG_WARNING
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:200
AV_PIX_FMT_RGB24
packed RGB 8:8:8, 24bpp, RGBRGB...
Definition: pixfmt.h:68
AV_PIX_FMT_BGR4
packed RGB 1:2:1 bitstream, 4bpp, (msb)1B 2G 1R(lsb), a byte contains two pixels, the first pixel in ...
Definition: pixfmt.h:84
e16
const uint8_t * e16
Definition: yuv2rgb.c:410
acc
int acc
Definition: yuv2rgb.c:555
ff_dither_2x2_8
const uint8_t ff_dither_2x2_8[][8]
Definition: output.c:46
ff_yuv2rgb_init_x86
av_cold SwsFunc ff_yuv2rgb_init_x86(SwsContext *c)
Definition: yuv2rgb.c:77
AV_PIX_FMT_RGB555LE
packed RGB 5:5:5, 16bpp, (msb)1X 5R 5G 5B(lsb), little-endian, X=unused/undefined ...
Definition: pixfmt.h:108
SwsContext::table_bU
uint8_t * table_bU[256+2 *YUVRGB_TABLE_HEADROOM]
Definition: swscale_internal.h:405
av_bswap16
#define av_bswap16
Definition: bswap.h:31
SwsContext::dstFormatBpp
int dstFormatBpp
Number of bits per pixel of the destination pixel format.
Definition: swscale_internal.h:305
ALLOC_YUV_TABLE
#define ALLOC_YUV_TABLE(x)
PUTRGB15
#define PUTRGB15(dst, src, i, o)
Definition: yuv2rgb.c:443
AV_PIX_FMT_RGB444BE
packed RGB 4:4:4, 16bpp, (msb)4X 4R 4G 4B(lsb), big-endian, X=unused/undefined
Definition: pixfmt.h:140
PUTBGR24
#define PUTBGR24(dst, src, i)
Definition: yuv2rgb.c:93
AV_PIX_FMT_RGB444
#define AV_PIX_FMT_RGB444
Definition: pixfmt.h:388
ff_dither_8x8_220
const uint8_t ff_dither_8x8_220[][8]
Definition: output.c:85
AV_PIX_FMT_RGB4
packed RGB 1:2:1 bitstream, 4bpp, (msb)1R 2G 1B(lsb), a byte contains two pixels, the first pixel in ...
Definition: pixfmt.h:87
SwsContext::ubCoeff
uint64_t ubCoeff
Definition: swscale_internal.h:473
base
uint8_t base
Definition: vp3data.h:141
fill_table
static void fill_table(uint8_t *table[256+2 *YUVRGB_TABLE_HEADROOM], const int elemsize, const int64_t inc, void *y_tab)
Definition: yuv2rgb.c:737
AV_PIX_FMT_RGB565LE
packed RGB 5:6:5, 16bpp, (msb) 5R 6G 5B(lsb), little-endian
Definition: pixfmt.h:106
AV_PIX_FMT_BGR4_BYTE
packed RGB 1:2:1, 8bpp, (msb)1B 2G 1R(lsb)
Definition: pixfmt.h:85
ff_dither_8x8_32
const uint8_t ff_dither_8x8_32[][8]
Definition: output.c:60
PUTRGB
#define PUTRGB(dst, src, i)
Definition: yuv2rgb.c:77
cb
static double cb(void *priv, double x, double y)
Definition: vf_geq.c:215
ff_dither_2x2_4
const uint8_t ff_dither_2x2_4[][8]
Definition: output.c:40
uint8_t
uint8_t
Definition: audio_convert.c:194
av_cold
#define av_cold
Definition: attributes.h:88
ff_dither_4x4_16
const uint8_t ff_dither_4x4_16[][8]
Definition: output.c:52
AV_PIX_FMT_RGB48LE
packed RGB 16:16:16, 48bpp, 16R, 16G, 16B, the 2-byte value for each R/G/B component is stored as lit...
Definition: pixfmt.h:103
f
#define f(width, name)
Definition: cbs_vp9.c:255
c
Undefined Behavior In the C some operations are like signed integer dereferencing freed accessing outside allocated Undefined Behavior must not occur in a C it is not safe even if the output of undefined operations is unused The unsafety may seem nit picking but Optimizing compilers have in fact optimized code on the assumption that no undefined Behavior occurs Optimizing code based on wrong assumptions can and has in some cases lead to effects beyond the output of computations The signed integer overflow problem in speed critical code Code which is highly optimized and works with signed integers sometimes has the problem that often the output of the computation does not c
Definition: undefined.txt:32
fill_gv_table
static void fill_gv_table(int table[256+2 *YUVRGB_TABLE_HEADROOM], const int elemsize, const int64_t inc)
Definition: yuv2rgb.c:751
AV_PIX_FMT_RGB444LE
packed RGB 4:4:4, 16bpp, (msb)4X 4R 4G 4B(lsb), little-endian, X=unused/undefined ...
Definition: pixfmt.h:139
u
#define u(width, name, range_min, range_max)
Definition: cbs_h2645.c:262
AV_PIX_FMT_RGB565BE
packed RGB 5:6:5, 16bpp, (msb) 5R 6G 5B(lsb), big-endian
Definition: pixfmt.h:105
AV_PIX_FMT_ABGR
packed ABGR 8:8:8:8, 32bpp, ABGRABGR...
Definition: pixfmt.h:94
PUTRGB16
#define PUTRGB16(dst, src, i, o)
Definition: yuv2rgb.c:413
SwsContext::yOffset
uint64_t yOffset
Definition: swscale_internal.h:476
swscale.h
external API header
SwsContext::dstFormat
enum AVPixelFormat dstFormat
Destination pixel format.
Definition: swscale_internal.h:303
isALPHA
#define isALPHA(x)
Definition: swscale.c:51
SwsContext::table_gU
uint8_t * table_gU[256+2 *YUVRGB_TABLE_HEADROOM]
Definition: swscale_internal.h:404
PUTRGBA
#define PUTRGBA(dst, ysrc, asrc, i, s)
Definition: yuv2rgb.c:103
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:28
table
static const uint16_t table[]
Definition: prosumer.c:206
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:194
AV_PIX_FMT_BGR32_1
#define AV_PIX_FMT_BGR32_1
Definition: pixfmt.h:375
AV_PIX_FMT_NE
#define AV_PIX_FMT_NE(be, le)
Definition: pixfmt.h:369
ff_yuv2rgb_coeffs
const int32_t ff_yuv2rgb_coeffs[11][4]
Definition: yuv2rgb.c:49
PUTBGR48
#define PUTBGR48(dst, src, i)
Definition: yuv2rgb.c:119
d64
const uint8_t * d64
Definition: yuv2rgb.c:503
AV_PIX_FMT_BGRA
packed BGRA 8:8:8:8, 32bpp, BGRABGRA...
Definition: pixfmt.h:95
r
const char * r
Definition: vf_curves.c:114
g
g
Definition: yuv2rgb.c:655
YUVRGB_TABLE_LUMA_HEADROOM
#define YUVRGB_TABLE_LUMA_HEADROOM
Definition: swscale_internal.h:40
ENDYUV2RGBFUNC
#define ENDYUV2RGBFUNC()
Definition: yuv2rgb.c:171
SwsContext::ugCoeff
uint64_t ugCoeff
Definition: swscale_internal.h:475
SWS_CS_DEFAULT
#define SWS_CS_DEFAULT
Definition: swscale.h:95
FFMAX
#define FFMAX(a, b)
Definition: common.h:94
AV_PIX_FMT_ARGB
packed ARGB 8:8:8:8, 32bpp, ARGBARGB...
Definition: pixfmt.h:92
AV_PIX_FMT_BGR48LE
packed RGB 16:16:16, 48bpp, 16B, 16G, 16R, the 2-byte value for each R/G/B component is stored as lit...
Definition: pixfmt.h:149
AV_PIX_FMT_RGBA
packed RGBA 8:8:8:8, 32bpp, RGBARGBA...
Definition: pixfmt.h:93
YUV2RGBFUNC
#define YUV2RGBFUNC(func_name, dst_type, alpha)
Definition: yuv2rgb.c:129
roundToInt16
static uint16_t roundToInt16(int64_t f)
Definition: yuv2rgb.c:762
AV_PIX_FMT_RGB4_BYTE
packed RGB 1:2:1, 8bpp, (msb)1R 2G 1B(lsb)
Definition: pixfmt.h:88
SwsContext::vgCoeff
uint64_t vgCoeff
Definition: swscale_internal.h:474
SwsContext::uOffset
uint64_t uOffset
Definition: swscale_internal.h:477
int32_t
int32_t
Definition: audio_convert.c:194
SwsContext::table_gV
int table_gV[256+2 *YUVRGB_TABLE_HEADROOM]
Definition: swscale_internal.h:402
sws_getCoefficients
const int * sws_getCoefficients(int colorspace)
Return a pointer to yuv<->rgb coefficients for the given colorspace suitable for sws_setColorspaceDet...
Definition: yuv2rgb.c:63
AV_PIX_FMT_BGR24
packed RGB 8:8:8, 24bpp, BGRBGR...
Definition: pixfmt.h:69
SwsContext::table_rV
uint8_t * table_rV[256+2 *YUVRGB_TABLE_HEADROOM]
Definition: swscale_internal.h:403
PUTRGB4D
#define PUTRGB4D(dst, src, i, o)
Definition: yuv2rgb.c:557
swscale_internal.h
AV_PIX_FMT_BGR48BE
packed RGB 16:16:16, 48bpp, 16B, 16G, 16R, the 2-byte value for each R/G/B component is stored as big...
Definition: pixfmt.h:148
ff_yuv2rgb_c_init_tables
av_cold int ff_yuv2rgb_c_init_tables(SwsContext *c, const int inv_table[4], int fullRange, int brightness, int contrast, int saturation)
Definition: yuv2rgb.c:774
SwsFunc
int(* SwsFunc)(struct SwsContext *context, const uint8_t *src[], int srcStride[], int srcSliceY, int srcSliceH, uint8_t *dst[], int dstStride[])
Definition: swscale_internal.h:83
d16
const uint8_t * d16
Definition: yuv2rgb.c:409
AV_PIX_FMT_BGR555
#define AV_PIX_FMT_BGR555
Definition: pixfmt.h:392
f16
const uint8_t * f16
Definition: yuv2rgb.c:411
AV_PIX_FMT_BGR8
packed RGB 3:3:2, 8bpp, (msb)2B 3G 3R(lsb)
Definition: pixfmt.h:83
av_bswap32
#define av_bswap32
Definition: bswap.h:33
CLOSEYUV2RGBFUNC
#define CLOSEYUV2RGBFUNC(dst_delta)
Definition: yuv2rgb.c:177
ff_yuv2rgb_get_func_ptr
SwsFunc ff_yuv2rgb_get_func_ptr(SwsContext *c)
Definition: yuv2rgb.c:679
isPlanar
static av_always_inline int isPlanar(enum AVPixelFormat pix_fmt)
Definition: swscale_internal.h:808
PUTRGB12
#define PUTRGB12(dst, src, i, o)
Definition: yuv2rgb.c:473
AV_PIX_FMT_RGB32
#define AV_PIX_FMT_RGB32
Definition: pixfmt.h:372
ff_dither_8x8_73
const uint8_t ff_dither_8x8_73[][8]
Definition: output.c:72
bswap.h
byte swapping routines
d32
const uint8_t * d32
Definition: yuv2rgb.c:502
ENDYUV2RGBLINE
#define ENDYUV2RGBLINE(dst_delta, ss)
Definition: yuv2rgb.c:160
pa_2
pa_2
Definition: yuv2rgb.c:292
AV_PIX_FMT_BGR565
#define AV_PIX_FMT_BGR565
Definition: pixfmt.h:391
ff_yuv2rgb_init_ppc
av_cold SwsFunc ff_yuv2rgb_init_ppc(SwsContext *c)
Definition: yuv2rgb_altivec.c:525
AV_PIX_FMT_RGB555BE
packed RGB 5:5:5, 16bpp, (msb)1X 5R 5G 5B(lsb), big-endian , X=unused/undefined
Definition: pixfmt.h:107
PUTRGB48
#define PUTRGB48(dst, src, i)
Definition: yuv2rgb.c:109
AV_PIX_FMT_MONOBLACK
Y , 1bpp, 0 is black, 1 is white, in each byte pixels are ordered from the msb to the lsb...
Definition: pixfmt.h:76
PUTRGB4DB
#define PUTRGB4DB(dst, src, i, o)
Definition: yuv2rgb.c:609
AV_PIX_FMT_RGB48BE
packed RGB 16:16:16, 48bpp, 16R, 16G, 16B, the 2-byte value for each R/G/B component is stored as big...
Definition: pixfmt.h:102
PUTRGB8
#define PUTRGB8(dst, src, i, o)
Definition: yuv2rgb.c:505
AV_PIX_FMT_BGR444
#define AV_PIX_FMT_BGR444
Definition: pixfmt.h:393
SwsContext::srcFormat
enum AVPixelFormat srcFormat
Source pixel format.
Definition: swscale_internal.h:304
d128
const uint8_t * d128
Definition: yuv2rgb.c:554
AV_PIX_FMT_RGB8
packed RGB 3:3:2, 8bpp, (msb)2R 3G 3B(lsb)
Definition: pixfmt.h:86
AV_PIX_FMT_RGB555
#define AV_PIX_FMT_RGB555
Definition: pixfmt.h:387
PUTRGB1
#define PUTRGB1(out, src, i, o)
Definition: yuv2rgb.c:657
AV_PIX_FMT_RGB32_1
#define AV_PIX_FMT_RGB32_1
Definition: pixfmt.h:373
out_1
char out_1
Definition: yuv2rgb.c:654
SwsContext::yCoeff
uint64_t yCoeff
Definition: swscale_internal.h:471
AV_PIX_FMT_RGB565
#define AV_PIX_FMT_RGB565
Definition: pixfmt.h:386
LOADCHROMA
#define LOADCHROMA(i)
Definition: yuv2rgb.c:70
av_uninit
#define av_uninit(x)
Definition: attributes.h:154
av_freep
#define av_freep(p)
Definition: tableprint_vlc.h:35
dst_2
dst_2[0]
Definition: yuv2rgb.c:676
av_get_pix_fmt_name
const char * av_get_pix_fmt_name(enum AVPixelFormat pix_fmt)
Return the short name for a pixel format, NULL in case pix_fmt is unknown.
Definition: pixdesc.c:2489
AVERROR
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a all references to both lists are replaced with a reference to the intersection And when a single format is eventually chosen for a link amongst the remaining all references to the list are updated That means that if a filter requires that its input and output have the same format amongst a supported all it has to do is use a reference to the same list of formats query_formats can leave some formats unset and return AVERROR(EAGAIN) to cause the negotiation mechanism toagain later.That can be used by filters with complex requirements to use the format negotiated on one link to set the formats supported on another.Frame references ownership and permissions
SwsContext::vOffset
uint64_t vOffset
Definition: swscale_internal.h:478
PUTRGB24
#define PUTRGB24(dst, src, i)
Definition: yuv2rgb.c:83
i
int i
Definition: input.c:407
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