FFmpeg
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utils.c
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1/*
2 * Copyright (C) 2024 Niklas Haas
3 * Copyright (C) 2001-2003 Michael Niedermayer <michaelni@gmx.at>
4 *
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22#include "config.h"
23
24#define _DEFAULT_SOURCE
25#include <inttypes.h>
26#include <math.h>
27#include <stdio.h>
28#include <string.h>
29
30#include "libavutil/attributes.h"
31#include "libavutil/avassert.h"
32#include "libavutil/cpu.h"
33#include "libavutil/csp.h"
34#include "libavutil/emms.h"
35#include "libavutil/imgutils.h"
36#include "libavutil/intreadwrite.h"
37#include "libavutil/libm.h"
38#include "libavutil/mathematics.h"
39#include "libavutil/mem.h"
40#include "libavutil/opt.h"
41#include "libavutil/pixdesc.h"
42#include "libavutil/refstruct.h"
43#include "libavutil/slicethread.h"
44#include "libavutil/thread.h"
45#include "libavutil/aarch64/cpu.h"
46#include "libavutil/ppc/cpu.h"
47#include "libavutil/x86/cpu.h"
48#include "libavutil/loongarch/cpu.h"
49
50#include "rgb2rgb.h"
51#include "swscale.h"
52#include "swscale_internal.h"
53#include "graph.h"
54#include "jit.h"
55
56#if CONFIG_VULKAN
57#include "vulkan/ops.h"
58#endif
59
60SwsBackend ff_sws_enabled_backends(const SwsContext *ctx)
61{
62 if (ctx->backends)
63 return ctx->backends;
64
65 SwsBackend fallback = SWS_BACKEND_STABLE;
66 if (ctx->flags & SWS_UNSTABLE)
67 fallback |= SWS_BACKEND_UNSTABLE;
68
69 return fallback;
70}
71
72/**
73 * Allocate and return an SwsContext without performing initialization.
74 */
75static SwsContext *alloc_set_opts(int srcW, int srcH, enum AVPixelFormat srcFormat,
76 int dstW, int dstH, enum AVPixelFormat dstFormat,
77 int flags, const double *param)
78{
79 SwsContext *sws = sws_alloc_context();
80 if (!sws)
81 return NULL;
82
83 sws->flags = flags;
84 sws->src_w = srcW;
85 sws->src_h = srcH;
86 sws->dst_w = dstW;
87 sws->dst_h = dstH;
88 sws->src_format = srcFormat;
89 sws->dst_format = dstFormat;
90
91 for (int i = 0; param && i < SWS_NUM_SCALER_PARAMS; i++)
92 sws->scaler_params[i] = param[i];
93
94 return sws;
95}
96
97int ff_shuffle_filter_coefficients(SwsInternal *c, int *filterPos,
98 int filterSize, int16_t *filter,
99 int dstW)
100{
101#if ARCH_X86_64
102 int i, j, k;
103 int cpu_flags = av_get_cpu_flags();
104 if (!filter)
105 return 0;
106 if (EXTERNAL_AVX2_FAST(cpu_flags) && !(cpu_flags & AV_CPU_FLAG_SLOW_GATHER)) {
107 if ((c->srcBpc == 8) && (c->dstBpc <= 14)) {
108 int16_t *filterCopy = NULL;
109 if (filterSize > 4) {
110 filterCopy = av_malloc_array(dstW, filterSize * sizeof(*filterCopy));
111 if (!filterCopy)
112 return AVERROR(ENOMEM);
113 memcpy(filterCopy, filter, dstW * filterSize * sizeof(int16_t));
114 }
115 // Do not swap filterPos for pixels which won't be processed by
116 // the main loop.
117 for (i = 0; i + 16 <= dstW; i += 16) {
118 FFSWAP(int, filterPos[i + 2], filterPos[i + 4]);
119 FFSWAP(int, filterPos[i + 3], filterPos[i + 5]);
120 FFSWAP(int, filterPos[i + 10], filterPos[i + 12]);
121 FFSWAP(int, filterPos[i + 11], filterPos[i + 13]);
122 }
123 if (filterSize > 4) {
124 // 16 pixels are processed at a time.
125 for (i = 0; i + 16 <= dstW; i += 16) {
126 // 4 filter coeffs are processed at a time.
127 for (k = 0; k + 4 <= filterSize; k += 4) {
128 for (j = 0; j < 16; ++j) {
129 int from = (i + j) * filterSize + k;
130 int to = i * filterSize + j * 4 + k * 16;
131 memcpy(&filter[to], &filterCopy[from], 4 * sizeof(int16_t));
132 }
133 }
134 }
135 // 4 pixels are processed at a time in the tail.
136 for (; i < dstW; i += 4) {
137 // 4 filter coeffs are processed at a time.
138 int rem = dstW - i >= 4 ? 4 : dstW - i;
139 for (k = 0; k + 4 <= filterSize; k += 4) {
140 for (j = 0; j < rem; ++j) {
141 int from = (i + j) * filterSize + k;
142 int to = i * filterSize + j * 4 + k * 4;
143 memcpy(&filter[to], &filterCopy[from], 4 * sizeof(int16_t));
144 }
145 }
146 }
147 }
148 av_free(filterCopy);
149 }
150 }
151#endif
152 return 0;
153}
154
155static double getSplineCoeff(double a, double b, double c, double d,
156 double dist)
157{
158 if (dist <= 1.0)
159 return ((d * dist + c) * dist + b) * dist + a;
160 else
161 return getSplineCoeff(0.0,
162 b + 2.0 * c + 3.0 * d,
163 c + 3.0 * d,
164 -b - 3.0 * c - 6.0 * d,
165 dist - 1.0);
166}
167
168static av_cold int get_local_pos(SwsInternal *s, int chr_subsample, int pos, int dir)
169{
170 if (pos == -1 || pos <= -513) {
171 pos = (128 << chr_subsample) - 128;
172 }
173 pos += 128; // relative to ideal left edge
174 return pos >> chr_subsample;
175}
176
177typedef struct {
178 int flag; ///< flag associated to the algorithm
179 const char *description; ///< human-readable description
180 int size_factor; ///< size factor used when initing the filters
181} ScaleAlgorithm;
182
183static const ScaleAlgorithm scale_algorithms[] = {
184 { SWS_AREA, "area averaging", 1 /* downscale only, for upscale it is bilinear */ },
185 { SWS_BICUBIC, "bicubic", 4 },
186 { SWS_BICUBLIN, "luma bicubic / chroma bilinear", -1 },
187 { SWS_BILINEAR, "bilinear", 2 },
188 { SWS_FAST_BILINEAR, "fast bilinear", -1 },
189 { SWS_GAUSS, "Gaussian", 8 /* infinite ;) */ },
190 { SWS_LANCZOS, "Lanczos", -1 /* custom */ },
191 { SWS_POINT, "nearest neighbor / point", -1 },
192 { SWS_SINC, "sinc", 20 /* infinite ;) */ },
193 { SWS_SPLINE, "bicubic spline", 20 /* infinite :)*/ },
194 { SWS_X, "experimental", 8 },
195};
196
197static av_cold int initFilter(int16_t **outFilter, int32_t **filterPos,
198 int *outFilterSize, int xInc, int srcW,
199 int dstW, int filterAlign, int one,
200 int scaler, int flags, int cpu_flags,
201 SwsVector *srcFilter, SwsVector *dstFilter,
202 double param[SWS_NUM_SCALER_PARAMS], int srcPos, int dstPos)
203{
204 int i;
205 int filterSize;
206 int filter2Size;
207 int minFilterSize;
208 int64_t *filter = NULL;
209 int64_t *filter2 = NULL;
210 const int64_t fone = 1LL << (54 - FFMIN(av_log2(srcW/dstW), 8));
211 int ret = -1;
212
213 emms_c(); // FIXME should not be required but IS (even for non-MMX versions)
214
215 // NOTE: the +3 is for the MMX(+1) / SSE(+3) scaler which reads over the end
216 if (!FF_ALLOC_TYPED_ARRAY(*filterPos, dstW + 3))
217 goto nomem;
218
219 if (FFABS(xInc - 0x10000) < 10 && srcPos == dstPos) { // unscaled
220 int i;
221 filterSize = 1;
222 if (!FF_ALLOCZ_TYPED_ARRAY(filter, dstW * filterSize))
223 goto nomem;
224
225 for (i = 0; i < dstW; i++) {
226 filter[i * filterSize] = fone;
227 (*filterPos)[i] = i;
228 }
229 } else if (scaler == SWS_POINT) { // lame looking point sampling mode
230 int i;
231 int64_t xDstInSrc;
232 filterSize = 1;
233 if (!FF_ALLOC_TYPED_ARRAY(filter, dstW * filterSize))
234 goto nomem;
235
236 xDstInSrc = ((dstPos*(int64_t)xInc)>>8) - ((srcPos*0x8000LL)>>7);
237 for (i = 0; i < dstW; i++) {
238 int xx = (xDstInSrc - ((filterSize - 1) << 15) + (1 << 15)) >> 16;
239
240 (*filterPos)[i] = xx;
241 filter[i] = fone;
242 xDstInSrc += xInc;
243 }
244 } else if ((xInc <= (1 << 16) && (scaler == SWS_AREA)) ||
245 (scaler == SWS_FAST_BILINEAR)) { // bilinear upscale
246 int i;
247 int64_t xDstInSrc;
248 filterSize = 2;
249 if (!FF_ALLOC_TYPED_ARRAY(filter, dstW * filterSize))
250 goto nomem;
251
252 xDstInSrc = ((dstPos*(int64_t)xInc)>>8) - ((srcPos*0x8000LL)>>7);
253 for (i = 0; i < dstW; i++) {
254 int xx = (xDstInSrc - ((filterSize - 1) << 15) + (1 << 15)) >> 16;
255 int j;
256
257 (*filterPos)[i] = xx;
258 // bilinear upscale / linear interpolate / area averaging
259 for (j = 0; j < filterSize; j++) {
260 int64_t coeff = fone - FFABS((int64_t)xx * (1 << 16) - xDstInSrc) * (fone >> 16);
261 if (coeff < 0)
262 coeff = 0;
263 filter[i * filterSize + j] = coeff;
264 xx++;
265 }
266 xDstInSrc += xInc;
267 }
268 } else {
269 int64_t xDstInSrc;
270 int sizeFactor = -1;
271
272 for (i = 0; i < FF_ARRAY_ELEMS(scale_algorithms); i++) {
273 if (scaler == scale_algorithms[i].flag && scale_algorithms[i].size_factor > 0) {
274 sizeFactor = scale_algorithms[i].size_factor;
275 break;
276 }
277 }
278 if (scaler == SWS_LANCZOS)
279 sizeFactor = param[0] != SWS_PARAM_DEFAULT ? ceil(2 * param[0]) : 6;
280 av_assert0(sizeFactor > 0);
281
282 if (sizeFactor > 50) {
283 ret = AVERROR(EINVAL);
284 goto fail;
285 }
286
287 if (xInc <= 1 << 16)
288 filterSize = 1 + sizeFactor; // upscale
289 else
290 filterSize = 1 + (sizeFactor * srcW + dstW - 1) / dstW;
291
292 filterSize = FFMIN(filterSize, srcW - 2);
293 filterSize = FFMAX(filterSize, 1);
294
295 filter = av_malloc_array(dstW, filterSize * sizeof(*filter));
296 if (!filter)
297 goto nomem;
298 xDstInSrc = ((dstPos*(int64_t)xInc)>>7) - ((srcPos*0x10000LL)>>7);
299 for (i = 0; i < dstW; i++) {
300 int xx = (xDstInSrc - (filterSize - 2) * (1LL<<16)) / (1 << 17);
301 int j;
302 (*filterPos)[i] = xx;
303 for (j = 0; j < filterSize; j++) {
304 int64_t d = (FFABS(((int64_t)xx * (1 << 17)) - xDstInSrc)) << 13;
305 double floatd;
306 int64_t coeff;
307
308 if (xInc > 1 << 16)
309 d = d * dstW / srcW;
310 floatd = d * (1.0 / (1 << 30));
311
312 if (scaler == SWS_BICUBIC) {
313 int64_t B = (param[0] != SWS_PARAM_DEFAULT ? param[0] : 0) * (1 << 24);
314 int64_t C = (param[1] != SWS_PARAM_DEFAULT ? param[1] : 0.6) * (1 << 24);
315
316 if (d >= 1LL << 31) {
317 coeff = 0.0;
318 } else {
319 int64_t dd = (d * d) >> 30;
320 int64_t ddd = (dd * d) >> 30;
321
322 if (d < 1LL << 30)
323 coeff = (12 * (1 << 24) - 9 * B - 6 * C) * ddd +
324 (-18 * (1 << 24) + 12 * B + 6 * C) * dd +
325 (6 * (1 << 24) - 2 * B) * (1 << 30);
326 else
327 coeff = (-B - 6 * C) * ddd +
328 (6 * B + 30 * C) * dd +
329 (-12 * B - 48 * C) * d +
330 (8 * B + 24 * C) * (1 << 30);
331 }
332 coeff /= (1LL<<54)/fone;
333 } else if (scaler == SWS_X) {
334 double A = param[0] != SWS_PARAM_DEFAULT ? param[0] : 1.0;
335 double c;
336
337 if (floatd < 1.0)
338 c = cos(floatd * M_PI);
339 else
340 c = -1.0;
341 if (c < 0.0)
342 c = -pow(-c, A);
343 else
344 c = pow(c, A);
345 coeff = (c * 0.5 + 0.5) * fone;
346 } else if (scaler == SWS_AREA) {
347 int64_t d2 = d - (1 << 29);
348 if (d2 * xInc < -(1LL << (29 + 16)))
349 coeff = 1.0 * (1LL << (30 + 16));
350 else if (d2 * xInc < (1LL << (29 + 16)))
351 coeff = -d2 * xInc + (1LL << (29 + 16));
352 else
353 coeff = 0.0;
354 coeff *= fone >> (30 + 16);
355 } else if (scaler == SWS_GAUSS) {
356 double p = param[0] != SWS_PARAM_DEFAULT ? param[0] : 3.0;
357 coeff = exp2(-p * floatd * floatd) * fone;
358 } else if (scaler == SWS_SINC) {
359 coeff = (d ? sin(floatd * M_PI) / (floatd * M_PI) : 1.0) * fone;
360 } else if (scaler == SWS_LANCZOS) {
361 double p = param[0] != SWS_PARAM_DEFAULT ? param[0] : 3.0;
362 coeff = (d ? sin(floatd * M_PI) * sin(floatd * M_PI / p) /
363 (floatd * floatd * M_PI * M_PI / p) : 1.0) * fone;
364 if (floatd > p)
365 coeff = 0;
366 } else if (scaler == SWS_BILINEAR) {
367 coeff = (1 << 30) - d;
368 if (coeff < 0)
369 coeff = 0;
370 coeff *= fone >> 30;
371 } else if (scaler == SWS_SPLINE) {
372 double p = -2.196152422706632;
373 coeff = getSplineCoeff(1.0, 0.0, p, -p - 1.0, floatd) * fone;
374 } else {
375 av_assert0(0);
376 }
377
378 filter[i * filterSize + j] = coeff;
379 xx++;
380 }
381 xDstInSrc += 2LL * xInc;
382 }
383 }
384
385 /* apply src & dst Filter to filter -> filter2
386 * av_free(filter);
387 */
388 av_assert0(filterSize > 0);
389 filter2Size = filterSize;
390 if (srcFilter)
391 filter2Size += srcFilter->length - 1;
392 if (dstFilter)
393 filter2Size += dstFilter->length - 1;
394 av_assert0(filter2Size > 0);
395 filter2 = av_calloc(dstW, filter2Size * sizeof(*filter2));
396 if (!filter2)
397 goto nomem;
398 for (i = 0; i < dstW; i++) {
399 int j, k;
400
401 if (srcFilter) {
402 for (k = 0; k < srcFilter->length; k++) {
403 for (j = 0; j < filterSize; j++)
404 filter2[i * filter2Size + k + j] +=
405 srcFilter->coeff[k] * filter[i * filterSize + j];
406 }
407 } else {
408 for (j = 0; j < filterSize; j++)
409 filter2[i * filter2Size + j] = filter[i * filterSize + j];
410 }
411 // FIXME dstFilter
412
413 (*filterPos)[i] += (filterSize - 1) / 2 - (filter2Size - 1) / 2;
414 }
415 av_freep(&filter);
416
417 /* try to reduce the filter-size (step1 find size and shift left) */
418 // Assume it is near normalized (*0.5 or *2.0 is OK but * 0.001 is not).
419 minFilterSize = 0;
420 for (i = dstW - 1; i >= 0; i--) {
421 int min = filter2Size;
422 int j;
423 int64_t cutOff = 0.0;
424
425 /* get rid of near zero elements on the left by shifting left */
426 for (j = 0; j < filter2Size; j++) {
427 int k;
428 cutOff += FFABS(filter2[i * filter2Size]);
429
430 if (cutOff > SWS_MAX_REDUCE_CUTOFF * fone)
431 break;
432
433 /* preserve monotonicity because the core can't handle the
434 * filter otherwise */
435 if (i < dstW - 1 && (*filterPos)[i] >= (*filterPos)[i + 1])
436 break;
437
438 // move filter coefficients left
439 for (k = 1; k < filter2Size; k++)
440 filter2[i * filter2Size + k - 1] = filter2[i * filter2Size + k];
441 filter2[i * filter2Size + k - 1] = 0;
442 (*filterPos)[i]++;
443 }
444
445 cutOff = 0;
446 /* count near zeros on the right */
447 for (j = filter2Size - 1; j > 0; j--) {
448 cutOff += FFABS(filter2[i * filter2Size + j]);
449
450 if (cutOff > SWS_MAX_REDUCE_CUTOFF * fone)
451 break;
452 min--;
453 }
454
455 if (min > minFilterSize)
456 minFilterSize = min;
457 }
458
459 if (PPC_ALTIVEC(cpu_flags)) {
460 // we can handle the special case 4, so we don't want to go the full 8
461 if (minFilterSize < 5)
462 filterAlign = 4;
463
464 /* We really don't want to waste our time doing useless computation, so
465 * fall back on the scalar C code for very small filters.
466 * Vectorizing is worth it only if you have a decent-sized vector. */
467 if (minFilterSize < 3)
468 filterAlign = 1;
469 }
470
471 if (HAVE_MMX && cpu_flags & AV_CPU_FLAG_MMX || have_neon(cpu_flags)) {
472 // special case for unscaled vertical filtering
473 if (minFilterSize == 1 && filterAlign == 2)
474 filterAlign = 1;
475 }
476
477 if (have_lasx(cpu_flags) || have_lsx(cpu_flags)) {
478 int reNum = minFilterSize & (0x07);
479
480 if (minFilterSize < 5)
481 filterAlign = 4;
482 if (reNum < 3)
483 filterAlign = 1;
484 }
485
486 av_assert0(minFilterSize > 0);
487 filterSize = (minFilterSize + (filterAlign - 1)) & (~(filterAlign - 1));
488 av_assert0(filterSize > 0);
489 filter = av_malloc_array(dstW, filterSize * sizeof(*filter));
490 if (!filter)
491 goto nomem;
492 if (filterSize >= MAX_FILTER_SIZE * 16 /
493 ((flags & SWS_ACCURATE_RND) ? APCK_SIZE : 16)) {
494 ret = RETCODE_USE_CASCADE;
495 goto fail;
496 }
497 *outFilterSize = filterSize;
498
499 if (flags & SWS_PRINT_INFO)
500 av_log(NULL, AV_LOG_VERBOSE,
501 "SwScaler: reducing / aligning filtersize %d -> %d\n",
502 filter2Size, filterSize);
503 /* try to reduce the filter-size (step2 reduce it) */
504 for (i = 0; i < dstW; i++) {
505 int j;
506
507 for (j = 0; j < filterSize; j++) {
508 if (j >= filter2Size)
509 filter[i * filterSize + j] = 0;
510 else
511 filter[i * filterSize + j] = filter2[i * filter2Size + j];
512 if ((flags & SWS_BITEXACT) && j >= minFilterSize)
513 filter[i * filterSize + j] = 0;
514 }
515 }
516
517 // FIXME try to align filterPos if possible
518
519 // fix borders
520 for (i = 0; i < dstW; i++) {
521 int j;
522 if ((*filterPos)[i] < 0) {
523 // move filter coefficients left to compensate for filterPos
524 for (j = 1; j < filterSize; j++) {
525 int left = FFMAX(j + (*filterPos)[i], 0);
526 filter[i * filterSize + left] += filter[i * filterSize + j];
527 filter[i * filterSize + j] = 0;
528 }
529 (*filterPos)[i]= 0;
530 }
531
532 if ((*filterPos)[i] + filterSize > srcW) {
533 int shift = (*filterPos)[i] + FFMIN(filterSize - srcW, 0);
534 int64_t acc = 0;
535
536 for (j = filterSize - 1; j >= 0; j--) {
537 if ((*filterPos)[i] + j >= srcW) {
538 acc += filter[i * filterSize + j];
539 filter[i * filterSize + j] = 0;
540 }
541 }
542 for (j = filterSize - 1; j >= 0; j--) {
543 if (j < shift) {
544 filter[i * filterSize + j] = 0;
545 } else {
546 filter[i * filterSize + j] = filter[i * filterSize + j - shift];
547 }
548 }
549
550 (*filterPos)[i]-= shift;
551 filter[i * filterSize + srcW - 1 - (*filterPos)[i]] += acc;
552 }
553 av_assert0((*filterPos)[i] >= 0);
554 av_assert0((*filterPos)[i] < srcW);
555 if ((*filterPos)[i] + filterSize > srcW) {
556 for (j = 0; j < filterSize; j++) {
557 av_assert0((*filterPos)[i] + j < srcW || !filter[i * filterSize + j]);
558 }
559 }
560 }
561
562 // Note the +1 is for the MMX scaler which reads over the end
563 /* align at 16 for AltiVec (needed by hScale_altivec_real) */
564 *outFilter = av_calloc(dstW + 3, *outFilterSize * sizeof(**outFilter));
565 if (!*outFilter)
566 goto nomem;
567
568 /* normalize & store in outFilter */
569 for (i = 0; i < dstW; i++) {
570 int j;
571 int64_t error = 0;
572 int64_t sum = 0;
573
574 for (j = 0; j < filterSize; j++) {
575 sum += filter[i * filterSize + j];
576 }
577 sum = (sum + one / 2) / one;
578 if (!sum) {
579 av_log(NULL, AV_LOG_WARNING, "SwScaler: zero vector in scaling\n");
580 sum = 1;
581 }
582 for (j = 0; j < *outFilterSize; j++) {
583 int64_t v = filter[i * filterSize + j] + error;
584 int intV = ROUNDED_DIV(v, sum);
585 (*outFilter)[i * (*outFilterSize) + j] = intV;
586 error = v - intV * sum;
587 }
588 }
589
590 (*filterPos)[dstW + 0] =
591 (*filterPos)[dstW + 1] =
592 (*filterPos)[dstW + 2] = (*filterPos)[dstW - 1]; /* the MMX/SSE scaler will
593 * read over the end */
594 for (i = 0; i < *outFilterSize; i++) {
595 int k = (dstW - 1) * (*outFilterSize) + i;
596 (*outFilter)[k + 1 * (*outFilterSize)] =
597 (*outFilter)[k + 2 * (*outFilterSize)] =
598 (*outFilter)[k + 3 * (*outFilterSize)] = (*outFilter)[k];
599 }
600
601 ret = 0;
602 goto done;
603nomem:
604 ret = AVERROR(ENOMEM);
605fail:
606 if(ret < 0)
607 av_log(NULL, ret == RETCODE_USE_CASCADE ? AV_LOG_DEBUG : AV_LOG_ERROR, "sws: initFilter failed\n");
608done:
609 av_free(filter);
610 av_free(filter2);
611 return ret;
612}
613
614static void fill_rgb2yuv_table(SwsInternal *c, const int table[4], int dstRange)
615{
616 int64_t W, V, Z, Cy, Cu, Cv;
617 int64_t vr = table[0];
618 int64_t ub = table[1];
619 int64_t ug = -table[2];
620 int64_t vg = -table[3];
621 int64_t ONE = 65536;
622 int64_t cy = ONE;
623 uint8_t *p = (uint8_t*)c->input_rgb2yuv_table;
624 int i;
625 static const int8_t map[] = {
626 BY_IDX, GY_IDX, -1 , BY_IDX, BY_IDX, GY_IDX, -1 , BY_IDX,
627 RY_IDX, -1 , GY_IDX, RY_IDX, RY_IDX, -1 , GY_IDX, RY_IDX,
628 RY_IDX, GY_IDX, -1 , RY_IDX, RY_IDX, GY_IDX, -1 , RY_IDX,
629 BY_IDX, -1 , GY_IDX, BY_IDX, BY_IDX, -1 , GY_IDX, BY_IDX,
630 BU_IDX, GU_IDX, -1 , BU_IDX, BU_IDX, GU_IDX, -1 , BU_IDX,
631 RU_IDX, -1 , GU_IDX, RU_IDX, RU_IDX, -1 , GU_IDX, RU_IDX,
632 RU_IDX, GU_IDX, -1 , RU_IDX, RU_IDX, GU_IDX, -1 , RU_IDX,
633 BU_IDX, -1 , GU_IDX, BU_IDX, BU_IDX, -1 , GU_IDX, BU_IDX,
634 BV_IDX, GV_IDX, -1 , BV_IDX, BV_IDX, GV_IDX, -1 , BV_IDX,
635 RV_IDX, -1 , GV_IDX, RV_IDX, RV_IDX, -1 , GV_IDX, RV_IDX,
636 RV_IDX, GV_IDX, -1 , RV_IDX, RV_IDX, GV_IDX, -1 , RV_IDX,
637 BV_IDX, -1 , GV_IDX, BV_IDX, BV_IDX, -1 , GV_IDX, BV_IDX,
638 RY_IDX, BY_IDX, RY_IDX, BY_IDX, RY_IDX, BY_IDX, RY_IDX, BY_IDX,
639 BY_IDX, RY_IDX, BY_IDX, RY_IDX, BY_IDX, RY_IDX, BY_IDX, RY_IDX,
640 GY_IDX, -1 , GY_IDX, -1 , GY_IDX, -1 , GY_IDX, -1 ,
641 -1 , GY_IDX, -1 , GY_IDX, -1 , GY_IDX, -1 , GY_IDX,
642 RU_IDX, BU_IDX, RU_IDX, BU_IDX, RU_IDX, BU_IDX, RU_IDX, BU_IDX,
643 BU_IDX, RU_IDX, BU_IDX, RU_IDX, BU_IDX, RU_IDX, BU_IDX, RU_IDX,
644 GU_IDX, -1 , GU_IDX, -1 , GU_IDX, -1 , GU_IDX, -1 ,
645 -1 , GU_IDX, -1 , GU_IDX, -1 , GU_IDX, -1 , GU_IDX,
646 RV_IDX, BV_IDX, RV_IDX, BV_IDX, RV_IDX, BV_IDX, RV_IDX, BV_IDX,
647 BV_IDX, RV_IDX, BV_IDX, RV_IDX, BV_IDX, RV_IDX, BV_IDX, RV_IDX,
648 GV_IDX, -1 , GV_IDX, -1 , GV_IDX, -1 , GV_IDX, -1 ,
649 -1 , GV_IDX, -1 , GV_IDX, -1 , GV_IDX, -1 , GV_IDX, //23
650 -1 , -1 , -1 , -1 , -1 , -1 , -1 , -1 , //24
651 -1 , -1 , -1 , -1 , -1 , -1 , -1 , -1 , //25
652 -1 , -1 , -1 , -1 , -1 , -1 , -1 , -1 , //26
653 -1 , -1 , -1 , -1 , -1 , -1 , -1 , -1 , //27
654 -1 , -1 , -1 , -1 , -1 , -1 , -1 , -1 , //28
655 -1 , -1 , -1 , -1 , -1 , -1 , -1 , -1 , //29
656 -1 , -1 , -1 , -1 , -1 , -1 , -1 , -1 , //30
657 -1 , -1 , -1 , -1 , -1 , -1 , -1 , -1 , //31
658 BY_IDX, GY_IDX, RY_IDX, -1 , -1 , -1 , -1 , -1 , //32
659 BU_IDX, GU_IDX, RU_IDX, -1 , -1 , -1 , -1 , -1 , //33
660 BV_IDX, GV_IDX, RV_IDX, -1 , -1 , -1 , -1 , -1 , //34
661 };
662
663 dstRange = 0; //FIXME range = 1 is handled elsewhere
664
665 if (!dstRange) {
666 cy = cy * 255 / 219;
667 } else {
668 vr = vr * 224 / 255;
669 ub = ub * 224 / 255;
670 ug = ug * 224 / 255;
671 vg = vg * 224 / 255;
672 }
673 W = ROUNDED_DIV(ONE*ONE*ug, ub);
674 V = ROUNDED_DIV(ONE*ONE*vg, vr);
675 Z = ONE*ONE-W-V;
676
677 Cy = ROUNDED_DIV(cy*Z, ONE);
678 Cu = ROUNDED_DIV(ub*Z, ONE);
679 Cv = ROUNDED_DIV(vr*Z, ONE);
680
681 c->input_rgb2yuv_table[RY_IDX] = -ROUNDED_DIV((1 << RGB2YUV_SHIFT)*V , Cy);
682 c->input_rgb2yuv_table[GY_IDX] = ROUNDED_DIV((1 << RGB2YUV_SHIFT)*ONE*ONE , Cy);
683 c->input_rgb2yuv_table[BY_IDX] = -ROUNDED_DIV((1 << RGB2YUV_SHIFT)*W , Cy);
684
685 c->input_rgb2yuv_table[RU_IDX] = ROUNDED_DIV((1 << RGB2YUV_SHIFT)*V , Cu);
686 c->input_rgb2yuv_table[GU_IDX] = -ROUNDED_DIV((1 << RGB2YUV_SHIFT)*ONE*ONE , Cu);
687 c->input_rgb2yuv_table[BU_IDX] = ROUNDED_DIV((1 << RGB2YUV_SHIFT)*(Z+W) , Cu);
688
689 c->input_rgb2yuv_table[RV_IDX] = ROUNDED_DIV((1 << RGB2YUV_SHIFT)*(V+Z) , Cv);
690 c->input_rgb2yuv_table[GV_IDX] = -ROUNDED_DIV((1 << RGB2YUV_SHIFT)*ONE*ONE , Cv);
691 c->input_rgb2yuv_table[BV_IDX] = ROUNDED_DIV((1 << RGB2YUV_SHIFT)*W , Cv);
692
693 if(/*!dstRange && */!memcmp(table, ff_yuv2rgb_coeffs[SWS_CS_DEFAULT], sizeof(ff_yuv2rgb_coeffs[SWS_CS_DEFAULT]))) {
694 c->input_rgb2yuv_table[BY_IDX] = ((int)(0.114 * 219 / 255 * (1 << RGB2YUV_SHIFT) + 0.5));
695 c->input_rgb2yuv_table[BV_IDX] = (-(int)(0.081 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5));
696 c->input_rgb2yuv_table[BU_IDX] = ((int)(0.500 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5));
697 c->input_rgb2yuv_table[GY_IDX] = ((int)(0.587 * 219 / 255 * (1 << RGB2YUV_SHIFT) + 0.5));
698 c->input_rgb2yuv_table[GV_IDX] = (-(int)(0.419 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5));
699 c->input_rgb2yuv_table[GU_IDX] = (-(int)(0.331 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5));
700 c->input_rgb2yuv_table[RY_IDX] = ((int)(0.299 * 219 / 255 * (1 << RGB2YUV_SHIFT) + 0.5));
701 c->input_rgb2yuv_table[RV_IDX] = ((int)(0.500 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5));
702 c->input_rgb2yuv_table[RU_IDX] = (-(int)(0.169 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5));
703 }
704 for(i=0; i<FF_ARRAY_ELEMS(map); i++)
705 AV_WL16(p + 16*4 + 2*i, map[i] >= 0 ? c->input_rgb2yuv_table[map[i]] : 0);
706}
707
708#if CONFIG_SMALL
709static void init_xyz_tables(uint16_t xyzgamma_tab[4096], uint16_t xyzgammainv_tab[65536],
710 uint16_t rgbgamma_tab[65536], uint16_t rgbgammainv_tab[4096])
711#else
712static uint16_t xyzgamma_tab[4096], rgbgammainv_tab[4096];
713static uint16_t rgbgamma_tab[65536], xyzgammainv_tab[65536];
714static av_cold void init_xyz_tables(void)
715#endif
716{
717 double xyzgamma = XYZ_GAMMA;
718 double rgbgamma = 1.0 / RGB_GAMMA;
719 double xyzgammainv = 1.0 / XYZ_GAMMA;
720 double rgbgammainv = RGB_GAMMA;
721
722 /* set input gamma vectors */
723 for (int i = 0; i < 4096; i++) {
724 xyzgamma_tab[i] = lrint(pow(i / 4095.0, xyzgamma) * 65535.0);
725 rgbgammainv_tab[i] = lrint(pow(i / 4095.0, rgbgammainv) * 65535.0);
726 }
727
728 /* set output gamma vectors */
729 for (int i = 0; i < 65536; i++) {
730 rgbgamma_tab[i] = lrint(pow(i / 65535.0, rgbgamma) * 4095.0);
731 xyzgammainv_tab[i] = lrint(pow(i / 65535.0, xyzgammainv) * 4095.0);
732 }
733}
734
735av_cold int ff_sws_fill_xyztables(SwsInternal *c)
736{
737 static const int16_t xyz2rgb_matrix[3][3] = {
738 {13270, -6295, -2041},
739 {-3969, 7682, 170},
740 { 228, -835, 4329} };
741 static const int16_t rgb2xyz_matrix[3][3] = {
742 {1689, 1464, 739},
743 { 871, 2929, 296},
744 { 79, 488, 3891} };
745
746 if (c->xyz2rgb.gamma.in)
747 return 0;
748
749 memcpy(c->xyz2rgb.mat, xyz2rgb_matrix, sizeof(c->xyz2rgb.mat));
750 memcpy(c->rgb2xyz.mat, rgb2xyz_matrix, sizeof(c->rgb2xyz.mat));
751
752#if CONFIG_SMALL
753 c->xyz2rgb.gamma.in = av_malloc(sizeof(uint16_t) * 2 * (4096 + 65536));
754 if (!c->xyz2rgb.gamma.in)
755 return AVERROR(ENOMEM);
756 c->rgb2xyz.gamma.in = c->xyz2rgb.gamma.in + 4096;
757 c->xyz2rgb.gamma.out = c->rgb2xyz.gamma.in + 4096;
758 c->rgb2xyz.gamma.out = c->xyz2rgb.gamma.out + 65536;
759 init_xyz_tables(c->xyz2rgb.gamma.in, c->rgb2xyz.gamma.out,
760 c->xyz2rgb.gamma.out, c->rgb2xyz.gamma.in);
761#else
762 c->xyz2rgb.gamma.in = xyzgamma_tab;
763 c->xyz2rgb.gamma.out = rgbgamma_tab;
764 c->rgb2xyz.gamma.in = rgbgammainv_tab;
765 c->rgb2xyz.gamma.out = xyzgammainv_tab;
766
767 static AVOnce xyz_init_static_once = AV_ONCE_INIT;
768 ff_thread_once(&xyz_init_static_once, init_xyz_tables);
769#endif
770 return 0;
771}
772
773static int handle_jpeg(/* enum AVPixelFormat */ int *format)
774{
775 switch (*format) {
776 case AV_PIX_FMT_YUVJ420P:
777 *format = AV_PIX_FMT_YUV420P;
778 return 1;
779 case AV_PIX_FMT_YUVJ411P:
780 *format = AV_PIX_FMT_YUV411P;
781 return 1;
782 case AV_PIX_FMT_YUVJ422P:
783 *format = AV_PIX_FMT_YUV422P;
784 return 1;
785 case AV_PIX_FMT_YUVJ444P:
786 *format = AV_PIX_FMT_YUV444P;
787 return 1;
788 case AV_PIX_FMT_YUVJ440P:
789 *format = AV_PIX_FMT_YUV440P;
790 return 1;
791 case AV_PIX_FMT_GRAY8:
792 case AV_PIX_FMT_YA8:
793 case AV_PIX_FMT_GRAY9LE:
794 case AV_PIX_FMT_GRAY9BE:
795 case AV_PIX_FMT_GRAY10LE:
796 case AV_PIX_FMT_GRAY10BE:
797 case AV_PIX_FMT_GRAY12LE:
798 case AV_PIX_FMT_GRAY12BE:
799 case AV_PIX_FMT_GRAY14LE:
800 case AV_PIX_FMT_GRAY14BE:
801 case AV_PIX_FMT_GRAY16LE:
802 case AV_PIX_FMT_GRAY16BE:
803 case AV_PIX_FMT_YA16BE:
804 case AV_PIX_FMT_YA16LE:
805 return 1;
806 default:
807 return 0;
808 }
809}
810
811static int handle_0alpha(/* enum AVPixelFormat */ int *format)
812{
813 switch (*format) {
814 case AV_PIX_FMT_0BGR : *format = AV_PIX_FMT_ABGR ; return 1;
815 case AV_PIX_FMT_BGR0 : *format = AV_PIX_FMT_BGRA ; return 4;
816 case AV_PIX_FMT_0RGB : *format = AV_PIX_FMT_ARGB ; return 1;
817 case AV_PIX_FMT_RGB0 : *format = AV_PIX_FMT_RGBA ; return 4;
818 default: return 0;
819 }
820}
821
822static int handle_xyz(/* enum AVPixelFormat */ int *format)
823{
824 switch (*format) {
825 case AV_PIX_FMT_XYZ12BE : *format = AV_PIX_FMT_RGB48BE; return 1;
826 case AV_PIX_FMT_XYZ12LE : *format = AV_PIX_FMT_RGB48LE; return 1;
827 default: return 0;
828 }
829}
830
831static int handle_formats(SwsContext *sws)
832{
833 SwsInternal *c = sws_internal(sws);
834 c->src0Alpha |= handle_0alpha(&sws->src_format);
835 c->dst0Alpha |= handle_0alpha(&sws->dst_format);
836 c->srcXYZ |= handle_xyz(&sws->src_format);
837 c->dstXYZ |= handle_xyz(&sws->dst_format);
838 if (c->srcXYZ || c->dstXYZ)
839 return ff_sws_fill_xyztables(c);
840 else
841 return 0;
842}
843
844static int range_override_needed(enum AVPixelFormat format)
845{
846 return !isYUV(format) && !isGray(format);
847}
848
849int sws_setColorspaceDetails(SwsContext *sws, const int inv_table[4],
850 int srcRange, const int table[4], int dstRange,
851 int brightness, int contrast, int saturation)
852{
853 SwsInternal *c = sws_internal(sws);
854 const AVPixFmtDescriptor *desc_dst;
855 const AVPixFmtDescriptor *desc_src;
856 int ret, need_reinit = 0;
857
858 if (c->nb_slice_ctx) {
859 int parent_ret = 0;
860 for (int i = 0; i < c->nb_slice_ctx; i++) {
861 int ret = sws_setColorspaceDetails(c->slice_ctx[i], inv_table,
862 srcRange, table, dstRange,
863 brightness, contrast, saturation);
864 if (ret < 0)
865 parent_ret = ret;
866 }
867
868 return parent_ret;
869 }
870
871 ret = handle_formats(sws);
872 if (ret < 0)
873 return ret;
874 desc_dst = av_pix_fmt_desc_get(sws->dst_format);
875 desc_src = av_pix_fmt_desc_get(sws->src_format);
876
877 if(range_override_needed(sws->dst_format))
878 dstRange = 0;
879 if(range_override_needed(sws->src_format))
880 srcRange = 0;
881
882 if (sws->src_range != srcRange ||
883 sws->dst_range != dstRange ||
884 c->brightness != brightness ||
885 c->contrast != contrast ||
886 c->saturation != saturation ||
887 memcmp(c->srcColorspaceTable, inv_table, sizeof(int) * 4) ||
888 memcmp(c->dstColorspaceTable, table, sizeof(int) * 4)
889 )
890 need_reinit = 1;
891
892 memmove(c->srcColorspaceTable, inv_table, sizeof(int) * 4);
893 memmove(c->dstColorspaceTable, table, sizeof(int) * 4);
894
895
896
897 c->brightness = brightness;
898 c->contrast = contrast;
899 c->saturation = saturation;
900 sws->src_range = srcRange;
901 sws->dst_range = dstRange;
902
903 if (need_reinit)
904 ff_sws_init_range_convert(c);
905
906 c->dstFormatBpp = av_get_bits_per_pixel(desc_dst);
907 c->srcFormatBpp = av_get_bits_per_pixel(desc_src);
908
909 if (c->cascaded_context[c->cascaded_mainindex])
910 return sws_setColorspaceDetails(c->cascaded_context[c->cascaded_mainindex],inv_table, srcRange,table, dstRange, brightness, contrast, saturation);
911
912 if (!need_reinit)
913 return 0;
914
915 if ((isYUV(sws->dst_format) || isGray(sws->dst_format)) && (isYUV(sws->src_format) || isGray(sws->src_format))) {
916 if (!c->cascaded_context[0] &&
917 memcmp(c->dstColorspaceTable, c->srcColorspaceTable, sizeof(int) * 4) &&
918 sws->src_w && sws->src_h && sws->dst_w && sws->dst_h) {
919 enum AVPixelFormat tmp_format;
920 int tmp_width, tmp_height;
921 int srcW = sws->src_w;
922 int srcH = sws->src_h;
923 int dstW = sws->dst_w;
924 int dstH = sws->dst_h;
925 int ret;
926 av_log(c, AV_LOG_VERBOSE, "YUV color matrix differs for YUV->YUV, using intermediate RGB to convert\n");
927
928 if (isNBPS(sws->dst_format) || is16BPS(sws->dst_format)) {
929 if (isALPHA(sws->src_format) && isALPHA(sws->dst_format)) {
930 tmp_format = AV_PIX_FMT_BGRA64;
931 } else {
932 tmp_format = AV_PIX_FMT_BGR48;
933 }
934 } else {
935 if (isALPHA(sws->src_format) && isALPHA(sws->dst_format)) {
936 tmp_format = AV_PIX_FMT_BGRA;
937 } else {
938 tmp_format = AV_PIX_FMT_BGR24;
939 }
940 }
941
942 if (srcW*srcH > dstW*dstH) {
943 tmp_width = dstW;
944 tmp_height = dstH;
945 } else {
946 tmp_width = srcW;
947 tmp_height = srcH;
948 }
949
950 ret = av_image_alloc(c->cascaded_tmp[0], c->cascaded_tmpStride[0],
951 tmp_width, tmp_height, tmp_format, 64);
952 if (ret < 0)
953 return ret;
954
955 c->cascaded_context[0] = alloc_set_opts(srcW, srcH, sws->src_format,
956 tmp_width, tmp_height, tmp_format,
957 sws->flags, sws->scaler_params);
958 if (!c->cascaded_context[0])
959 return -1;
960
961 c->cascaded_context[0]->alpha_blend = sws->alpha_blend;
962 ret = sws_init_context(c->cascaded_context[0], NULL , NULL);
963 if (ret < 0)
964 return ret;
965 //we set both src and dst depending on that the RGB side will be ignored
966 sws_setColorspaceDetails(c->cascaded_context[0], inv_table,
967 srcRange, table, dstRange,
968 brightness, contrast, saturation);
969
970 c->cascaded_context[1] = alloc_set_opts(tmp_width, tmp_height, tmp_format,
971 dstW, dstH, sws->dst_format,
972 sws->flags, sws->scaler_params);
973 if (!c->cascaded_context[1])
974 return -1;
975 c->cascaded_context[1]->src_range = srcRange;
976 c->cascaded_context[1]->dst_range = dstRange;
977 ret = sws_init_context(c->cascaded_context[1], NULL , NULL);
978 if (ret < 0)
979 return ret;
980 sws_setColorspaceDetails(c->cascaded_context[1], inv_table,
981 srcRange, table, dstRange,
982 0, 1 << 16, 1 << 16);
983 return 0;
984 }
985 //We do not support this combination currently, we need to cascade more contexts to compensate
986 if (c->cascaded_context[0] && memcmp(c->dstColorspaceTable, c->srcColorspaceTable, sizeof(int) * 4))
987 return -1; //AVERROR_PATCHWELCOME;
988 return 0;
989 }
990
991 if (!isYUV(sws->dst_format) && !isGray(sws->dst_format)) {
992 ff_yuv2rgb_c_init_tables(c, inv_table, srcRange, brightness,
993 contrast, saturation);
994 // FIXME factorize
995
996#if ARCH_PPC
997 ff_yuv2rgb_init_tables_ppc(c, inv_table, brightness,
998 contrast, saturation);
999#endif
1000 }
1001
1002 fill_rgb2yuv_table(c, table, dstRange);
1003
1004 return 0;
1005}
1006
1007int sws_getColorspaceDetails(SwsContext *sws, int **inv_table,
1008 int *srcRange, int **table, int *dstRange,
1009 int *brightness, int *contrast, int *saturation)
1010{
1011 SwsInternal *c = sws_internal(sws);
1012 if (!c)
1013 return -1;
1014
1015 if (c->nb_slice_ctx) {
1016 return sws_getColorspaceDetails(c->slice_ctx[0], inv_table, srcRange,
1017 table, dstRange, brightness, contrast,
1018 saturation);
1019 }
1020
1021 *inv_table = c->srcColorspaceTable;
1022 *table = c->dstColorspaceTable;
1023 *srcRange = range_override_needed(sws->src_format) ? 1 : sws->src_range;
1024 *dstRange = range_override_needed(sws->dst_format) ? 1 : sws->dst_range;
1025 *brightness = c->brightness;
1026 *contrast = c->contrast;
1027 *saturation = c->saturation;
1028
1029 return 0;
1030}
1031
1032SwsContext *sws_alloc_context(void)
1033{
1034 SwsInternal *c = av_mallocz(sizeof(*c) + SWSINTERNAL_ADDITIONAL_ASM_SIZE);
1035 if (!c)
1036 return NULL;
1037
1038 c->opts.av_class = &ff_sws_context_class;
1039 av_opt_set_defaults(c);
1040 atomic_init(&c->stride_unaligned_warned, 0);
1041 atomic_init(&c->data_unaligned_warned, 0);
1042
1043 return &c->opts;
1044}
1045
1046static uint16_t * alloc_gamma_tbl(double e)
1047{
1048 int i = 0;
1049 uint16_t * tbl;
1050 tbl = (uint16_t*)av_malloc(sizeof(uint16_t) * 1 << 16);
1051 if (!tbl)
1052 return NULL;
1053
1054 for (i = 0; i < 65536; ++i) {
1055 tbl[i] = pow(i / 65535.0, e) * 65535.0;
1056 }
1057 return tbl;
1058}
1059
1060static enum AVPixelFormat alphaless_fmt(enum AVPixelFormat fmt)
1061{
1062 switch(fmt) {
1063 case AV_PIX_FMT_ARGB: return AV_PIX_FMT_RGB24;
1064 case AV_PIX_FMT_RGBA: return AV_PIX_FMT_RGB24;
1065 case AV_PIX_FMT_ABGR: return AV_PIX_FMT_BGR24;
1066 case AV_PIX_FMT_BGRA: return AV_PIX_FMT_BGR24;
1067 case AV_PIX_FMT_YA8: return AV_PIX_FMT_GRAY8;
1068
1069 case AV_PIX_FMT_YUVA420P: return AV_PIX_FMT_YUV420P;
1070 case AV_PIX_FMT_YUVA422P: return AV_PIX_FMT_YUV422P;
1071 case AV_PIX_FMT_YUVA444P: return AV_PIX_FMT_YUV444P;
1072
1073 case AV_PIX_FMT_GBRAP: return AV_PIX_FMT_GBRP;
1074
1075 case AV_PIX_FMT_GBRAP10LE: return AV_PIX_FMT_GBRP10;
1076 case AV_PIX_FMT_GBRAP10BE: return AV_PIX_FMT_GBRP10;
1077
1078 case AV_PIX_FMT_GBRAP12LE: return AV_PIX_FMT_GBRP12;
1079 case AV_PIX_FMT_GBRAP12BE: return AV_PIX_FMT_GBRP12;
1080
1081 case AV_PIX_FMT_GBRAP14LE: return AV_PIX_FMT_GBRP14;
1082 case AV_PIX_FMT_GBRAP14BE: return AV_PIX_FMT_GBRP14;
1083
1084 case AV_PIX_FMT_GBRAP16LE: return AV_PIX_FMT_GBRP16;
1085 case AV_PIX_FMT_GBRAP16BE: return AV_PIX_FMT_GBRP16;
1086
1087 case AV_PIX_FMT_RGBA64LE: return AV_PIX_FMT_RGB48;
1088 case AV_PIX_FMT_RGBA64BE: return AV_PIX_FMT_RGB48;
1089 case AV_PIX_FMT_BGRA64LE: return AV_PIX_FMT_BGR48;
1090 case AV_PIX_FMT_BGRA64BE: return AV_PIX_FMT_BGR48;
1091
1092 case AV_PIX_FMT_YA16BE: return AV_PIX_FMT_GRAY16;
1093 case AV_PIX_FMT_YA16LE: return AV_PIX_FMT_GRAY16;
1094
1095 case AV_PIX_FMT_YUVA420P9BE: return AV_PIX_FMT_YUV420P9;
1096 case AV_PIX_FMT_YUVA422P9BE: return AV_PIX_FMT_YUV422P9;
1097 case AV_PIX_FMT_YUVA444P9BE: return AV_PIX_FMT_YUV444P9;
1098 case AV_PIX_FMT_YUVA420P9LE: return AV_PIX_FMT_YUV420P9;
1099 case AV_PIX_FMT_YUVA422P9LE: return AV_PIX_FMT_YUV422P9;
1100 case AV_PIX_FMT_YUVA444P9LE: return AV_PIX_FMT_YUV444P9;
1101 case AV_PIX_FMT_YUVA420P10BE: return AV_PIX_FMT_YUV420P10;
1102 case AV_PIX_FMT_YUVA422P10BE: return AV_PIX_FMT_YUV422P10;
1103 case AV_PIX_FMT_YUVA444P10BE: return AV_PIX_FMT_YUV444P10;
1104 case AV_PIX_FMT_YUVA420P10LE: return AV_PIX_FMT_YUV420P10;
1105 case AV_PIX_FMT_YUVA422P10LE: return AV_PIX_FMT_YUV422P10;
1106 case AV_PIX_FMT_YUVA444P10LE: return AV_PIX_FMT_YUV444P10;
1107 case AV_PIX_FMT_YUVA420P16BE: return AV_PIX_FMT_YUV420P16;
1108 case AV_PIX_FMT_YUVA422P16BE: return AV_PIX_FMT_YUV422P16;
1109 case AV_PIX_FMT_YUVA444P16BE: return AV_PIX_FMT_YUV444P16;
1110 case AV_PIX_FMT_YUVA420P16LE: return AV_PIX_FMT_YUV420P16;
1111 case AV_PIX_FMT_YUVA422P16LE: return AV_PIX_FMT_YUV422P16;
1112 case AV_PIX_FMT_YUVA444P16LE: return AV_PIX_FMT_YUV444P16;
1113
1114// case AV_PIX_FMT_AYUV64LE:
1115// case AV_PIX_FMT_AYUV64BE:
1116// case AV_PIX_FMT_PAL8:
1117 default: return AV_PIX_FMT_NONE;
1118 }
1119}
1120
1121static int scaler_flag(SwsScaler scaler, int fallback)
1122{
1123 switch (scaler) {
1124 case SWS_SCALE_BILINEAR: return SWS_BILINEAR; break;
1125 case SWS_SCALE_BICUBIC: return SWS_BICUBIC; break;
1126 case SWS_SCALE_POINT: return SWS_POINT; break;
1127 case SWS_SCALE_AREA: return SWS_AREA; break;
1128 case SWS_SCALE_GAUSSIAN: return SWS_GAUSS; break;
1129 case SWS_SCALE_SINC: return SWS_SINC; break;
1130 case SWS_SCALE_LANCZOS: return SWS_LANCZOS; break;
1131 case SWS_SCALE_SPLINE: return SWS_SPLINE; break;
1132 default:
1133 return fallback;
1134 }
1135}
1136
1137av_cold int ff_sws_init_single_context(SwsContext *sws, SwsFilter *srcFilter,
1138 SwsFilter *dstFilter)
1139{
1140 int i;
1141 int usesVFilter, usesHFilter;
1142 int unscaled;
1143 SwsInternal *c = sws_internal(sws);
1144 SwsFilter dummyFilter = { NULL, NULL, NULL, NULL };
1145 int srcW = sws->src_w;
1146 int srcH = sws->src_h;
1147 int dstW = sws->dst_w;
1148 int dstH = sws->dst_h;
1149 int dst_stride = FFALIGN(dstW * sizeof(int16_t) + 66, 16);
1150 int flags, cpu_flags;
1151 enum AVPixelFormat srcFormat, dstFormat;
1152 const AVPixFmtDescriptor *desc_src;
1153 const AVPixFmtDescriptor *desc_dst;
1154 int ret = 0;
1155 enum AVPixelFormat tmpFmt;
1156 static const float float_mult = 1.0f / 255.0f;
1157
1158 cpu_flags = av_get_cpu_flags();
1159 flags = sws->flags;
1160 emms_c();
1161
1162 unscaled = (srcW == dstW && srcH == dstH);
1163
1164 if (!c->contrast && !c->saturation && !c->dstFormatBpp)
1165 sws_setColorspaceDetails(sws, ff_yuv2rgb_coeffs[SWS_CS_DEFAULT], sws->src_range,
1166 ff_yuv2rgb_coeffs[SWS_CS_DEFAULT],
1167 sws->dst_range, 0, 1 << 16, 1 << 16);
1168
1169 ret = handle_formats(sws);
1170 if (ret < 0)
1171 return ret;
1172 srcFormat = sws->src_format;
1173 dstFormat = sws->dst_format;
1174 desc_src = av_pix_fmt_desc_get(srcFormat);
1175 desc_dst = av_pix_fmt_desc_get(dstFormat);
1176
1177 // If the source has no alpha then disable alpha blendaway
1178 if (c->src0Alpha)
1179 sws->alpha_blend = SWS_ALPHA_BLEND_NONE;
1180
1181 if (!(unscaled && sws_isSupportedEndiannessConversion(srcFormat) &&
1182 av_pix_fmt_swap_endianness(srcFormat) == dstFormat)) {
1183 if (!sws_isSupportedInput(srcFormat)) {
1184 av_log(c, AV_LOG_ERROR, "%s is not supported as input pixel format\n",
1185 av_get_pix_fmt_name(srcFormat));
1186 return AVERROR(EINVAL);
1187 }
1188 if (!sws_isSupportedOutput(dstFormat)) {
1189 av_log(c, AV_LOG_ERROR, "%s is not supported as output pixel format\n",
1190 av_get_pix_fmt_name(dstFormat));
1191 return AVERROR(EINVAL);
1192 }
1193 }
1194 av_assert2(desc_src && desc_dst);
1195
1196 i = flags & (SWS_POINT |
1197 SWS_AREA |
1198 SWS_BILINEAR |
1199 SWS_FAST_BILINEAR |
1200 SWS_BICUBIC |
1201 SWS_X |
1202 SWS_GAUSS |
1203 SWS_LANCZOS |
1204 SWS_SINC |
1205 SWS_SPLINE |
1206 SWS_BICUBLIN);
1207
1208 /* provide a default scaler if not set by caller */
1209 if (!i) {
1210 if (dstW < srcW && dstH < srcH)
1211 i = SWS_BICUBIC;
1212 else if (dstW > srcW && dstH > srcH)
1213 i = SWS_BICUBIC;
1214 else
1215 i = SWS_BICUBIC;
1216 flags |= i;
1217 sws->flags = flags;
1218 } else if (i & (i - 1)) {
1219 av_log(c, AV_LOG_ERROR,
1220 "Exactly one scaler algorithm must be chosen, got %X\n", i);
1221 return AVERROR(EINVAL);
1222 }
1223
1224 if (i == SWS_FAST_BILINEAR) {
1225 if (srcW < 8 || dstW <= 8) {
1226 i = SWS_BILINEAR;
1227 flags ^= SWS_FAST_BILINEAR | i;
1228 sws->flags = flags;
1229 }
1230 }
1231
1232 SwsScaler scaler_sub = sws->scaler_sub ? sws->scaler_sub : sws->scaler;
1233 int lum_scaler = scaler_flag(sws->scaler, i == SWS_BICUBLIN ? SWS_BICUBIC : i);
1234 int chr_scaler = scaler_flag(scaler_sub, i == SWS_BICUBLIN ? SWS_BILINEAR : i);
1235 const int info_scaler = sws->scaler == SWS_SCALE_AUTO &&
1236 i == SWS_BICUBLIN &&
1237 chr_scaler == SWS_BILINEAR ? i : lum_scaler;
1238
1239 /* sanity check */
1240 if (srcW < 1 || srcH < 1 || dstW < 1 || dstH < 1) {
1241 /* FIXME check if these are enough and try to lower them after
1242 * fixing the relevant parts of the code */
1243 av_log(c, AV_LOG_ERROR, "%dx%d -> %dx%d is invalid scaling dimension\n",
1244 srcW, srcH, dstW, dstH);
1245 return AVERROR(EINVAL);
1246 }
1247
1248 if (!dstFilter)
1249 dstFilter = &dummyFilter;
1250 if (!srcFilter)
1251 srcFilter = &dummyFilter;
1252
1253 int64_t lumXInc = (((int64_t)srcW << 16) + (dstW >> 1)) / dstW;
1254 int64_t lumYInc = (((int64_t)srcH << 16) + (dstH >> 1)) / dstH;
1255 c->dstFormatBpp = av_get_bits_per_pixel(desc_dst);
1256 c->srcFormatBpp = av_get_bits_per_pixel(desc_src);
1257 c->vRounder = 4 * 0x0001000100010001ULL;
1258
1259 usesVFilter = (srcFilter->lumV && srcFilter->lumV->length > 1) ||
1260 (srcFilter->chrV && srcFilter->chrV->length > 1) ||
1261 (dstFilter->lumV && dstFilter->lumV->length > 1) ||
1262 (dstFilter->chrV && dstFilter->chrV->length > 1);
1263 usesHFilter = (srcFilter->lumH && srcFilter->lumH->length > 1) ||
1264 (srcFilter->chrH && srcFilter->chrH->length > 1) ||
1265 (dstFilter->lumH && dstFilter->lumH->length > 1) ||
1266 (dstFilter->chrH && dstFilter->chrH->length > 1);
1267
1268 av_pix_fmt_get_chroma_sub_sample(srcFormat, &c->chrSrcHSubSample, &c->chrSrcVSubSample);
1269 av_pix_fmt_get_chroma_sub_sample(dstFormat, &c->chrDstHSubSample, &c->chrDstVSubSample);
1270
1271 c->dst_slice_align = 1 << c->chrDstVSubSample;
1272
1273 if (isAnyRGB(dstFormat) && !(flags&SWS_FULL_CHR_H_INT)) {
1274 if (dstW&1) {
1275 av_log(c, AV_LOG_DEBUG, "Forcing full internal H chroma due to odd output size\n");
1276 flags |= SWS_FULL_CHR_H_INT;
1277 sws->flags = flags;
1278 }
1279
1280 if ( c->chrSrcHSubSample == 0
1281 && c->chrSrcVSubSample == 0
1282 && sws->dither != SWS_DITHER_BAYER //SWS_FULL_CHR_H_INT is currently not supported with SWS_DITHER_BAYER
1283 && !(sws->flags & SWS_FAST_BILINEAR)
1284 ) {
1285 av_log(c, AV_LOG_DEBUG, "Forcing full internal H chroma due to input having non subsampled chroma\n");
1286 flags |= SWS_FULL_CHR_H_INT;
1287 sws->flags = flags;
1288 }
1289 }
1290
1291 if (sws->dither == SWS_DITHER_AUTO) {
1292 if (flags & SWS_ERROR_DIFFUSION)
1293 sws->dither = SWS_DITHER_ED;
1294 }
1295
1296 if(dstFormat == AV_PIX_FMT_BGR4_BYTE ||
1297 dstFormat == AV_PIX_FMT_RGB4_BYTE ||
1298 dstFormat == AV_PIX_FMT_BGR8 ||
1299 dstFormat == AV_PIX_FMT_RGB8) {
1300 if (sws->dither == SWS_DITHER_AUTO)
1301 sws->dither = (flags & SWS_FULL_CHR_H_INT) ? SWS_DITHER_ED : SWS_DITHER_BAYER;
1302 if (!(flags & SWS_FULL_CHR_H_INT)) {
1303 if (sws->dither == SWS_DITHER_ED || sws->dither == SWS_DITHER_A_DITHER || sws->dither == SWS_DITHER_X_DITHER || sws->dither == SWS_DITHER_NONE) {
1304 av_log(c, AV_LOG_DEBUG,
1305 "Desired dithering only supported in full chroma interpolation for destination format '%s'\n",
1306 av_get_pix_fmt_name(dstFormat));
1307 flags |= SWS_FULL_CHR_H_INT;
1308 sws->flags = flags;
1309 }
1310 }
1311 if (flags & SWS_FULL_CHR_H_INT) {
1312 if (sws->dither == SWS_DITHER_BAYER) {
1313 av_log(c, AV_LOG_DEBUG,
1314 "Ordered dither is not supported in full chroma interpolation for destination format '%s'\n",
1315 av_get_pix_fmt_name(dstFormat));
1316 sws->dither = SWS_DITHER_ED;
1317 }
1318 }
1319 }
1320 if (isPlanarRGB(dstFormat)) {
1321 if (!(flags & SWS_FULL_CHR_H_INT)) {
1322 av_log(c, AV_LOG_DEBUG,
1323 "%s output is not supported with half chroma resolution, switching to full\n",
1324 av_get_pix_fmt_name(dstFormat));
1325 flags |= SWS_FULL_CHR_H_INT;
1326 sws->flags = flags;
1327 }
1328 }
1329
1330 /* reuse chroma for 2 pixels RGB/BGR unless user wants full
1331 * chroma interpolation */
1332 if (flags & SWS_FULL_CHR_H_INT &&
1333 isAnyRGB(dstFormat) &&
1334 !isPlanarRGB(dstFormat) &&
1335 dstFormat != AV_PIX_FMT_RGBA64LE &&
1336 dstFormat != AV_PIX_FMT_RGBA64BE &&
1337 dstFormat != AV_PIX_FMT_BGRA64LE &&
1338 dstFormat != AV_PIX_FMT_BGRA64BE &&
1339 dstFormat != AV_PIX_FMT_RGB48LE &&
1340 dstFormat != AV_PIX_FMT_RGB48BE &&
1341 dstFormat != AV_PIX_FMT_BGR48LE &&
1342 dstFormat != AV_PIX_FMT_BGR48BE &&
1343 dstFormat != AV_PIX_FMT_RGBA &&
1344 dstFormat != AV_PIX_FMT_ARGB &&
1345 dstFormat != AV_PIX_FMT_BGRA &&
1346 dstFormat != AV_PIX_FMT_ABGR &&
1347 dstFormat != AV_PIX_FMT_RGB24 &&
1348 dstFormat != AV_PIX_FMT_BGR24 &&
1349 dstFormat != AV_PIX_FMT_BGR4_BYTE &&
1350 dstFormat != AV_PIX_FMT_RGB4_BYTE &&
1351 dstFormat != AV_PIX_FMT_BGR8 &&
1352 dstFormat != AV_PIX_FMT_RGB8 &&
1353 dstFormat != AV_PIX_FMT_X2RGB10LE &&
1354 dstFormat != AV_PIX_FMT_X2BGR10LE
1355 ) {
1356 av_log(c, AV_LOG_WARNING,
1357 "full chroma interpolation for destination format '%s' not yet implemented\n",
1358 av_get_pix_fmt_name(dstFormat));
1359 flags &= ~SWS_FULL_CHR_H_INT;
1360 sws->flags = flags;
1361 }
1362 if (isAnyRGB(dstFormat) && !(flags & SWS_FULL_CHR_H_INT))
1363 c->chrDstHSubSample = 1;
1364
1365 // drop some chroma lines if the user wants it
1366 c->vChrDrop = (flags & SWS_SRC_V_CHR_DROP_MASK) >>
1367 SWS_SRC_V_CHR_DROP_SHIFT;
1368 c->chrSrcVSubSample += c->vChrDrop;
1369
1370 /* drop every other pixel for chroma calculation unless user
1371 * wants full chroma */
1372 if (isAnyRGB(srcFormat) && !(srcW & 1) && !(flags & SWS_FULL_CHR_H_INP) &&
1373 srcFormat != AV_PIX_FMT_RGB8 && srcFormat != AV_PIX_FMT_BGR8 &&
1374 srcFormat != AV_PIX_FMT_RGB4 && srcFormat != AV_PIX_FMT_BGR4 &&
1375 srcFormat != AV_PIX_FMT_RGB4_BYTE && srcFormat != AV_PIX_FMT_BGR4_BYTE &&
1376 srcFormat != AV_PIX_FMT_GBRP9BE && srcFormat != AV_PIX_FMT_GBRP9LE &&
1377 srcFormat != AV_PIX_FMT_GBRP10BE && srcFormat != AV_PIX_FMT_GBRP10LE &&
1378 srcFormat != AV_PIX_FMT_GBRP10MSBBE && srcFormat != AV_PIX_FMT_GBRP10MSBLE &&
1379 srcFormat != AV_PIX_FMT_GBRAP10BE && srcFormat != AV_PIX_FMT_GBRAP10LE &&
1380 srcFormat != AV_PIX_FMT_GBRP12BE && srcFormat != AV_PIX_FMT_GBRP12LE &&
1381 srcFormat != AV_PIX_FMT_GBRP12MSBBE && srcFormat != AV_PIX_FMT_GBRP12MSBLE &&
1382 srcFormat != AV_PIX_FMT_GBRAP12BE && srcFormat != AV_PIX_FMT_GBRAP12LE &&
1383 srcFormat != AV_PIX_FMT_GBRAP14BE && srcFormat != AV_PIX_FMT_GBRAP14LE &&
1384 srcFormat != AV_PIX_FMT_GBRP14BE && srcFormat != AV_PIX_FMT_GBRP14LE &&
1385 srcFormat != AV_PIX_FMT_GBRP16BE && srcFormat != AV_PIX_FMT_GBRP16LE &&
1386 srcFormat != AV_PIX_FMT_GBRAP16BE && srcFormat != AV_PIX_FMT_GBRAP16LE &&
1387 srcFormat != AV_PIX_FMT_GBRPF32BE && srcFormat != AV_PIX_FMT_GBRPF32LE &&
1388 srcFormat != AV_PIX_FMT_GBRAPF32BE && srcFormat != AV_PIX_FMT_GBRAPF32LE &&
1389 srcFormat != AV_PIX_FMT_GBRPF16BE && srcFormat != AV_PIX_FMT_GBRPF16LE &&
1390 srcFormat != AV_PIX_FMT_GBRAPF16BE && srcFormat != AV_PIX_FMT_GBRAPF16LE &&
1391 ((dstW >> c->chrDstHSubSample) <= (srcW >> 1) ||
1392 (flags & SWS_FAST_BILINEAR)))
1393 c->chrSrcHSubSample = 1;
1394
1395 // Note the AV_CEIL_RSHIFT is so that we always round toward +inf.
1396 c->chrSrcW = AV_CEIL_RSHIFT(srcW, c->chrSrcHSubSample);
1397 c->chrSrcH = AV_CEIL_RSHIFT(srcH, c->chrSrcVSubSample);
1398 c->chrDstW = AV_CEIL_RSHIFT(dstW, c->chrDstHSubSample);
1399 c->chrDstH = AV_CEIL_RSHIFT(dstH, c->chrDstVSubSample);
1400
1401 if (!FF_ALLOCZ_TYPED_ARRAY(c->formatConvBuffer, FFALIGN(srcW * 2 + 78, 16) * 2))
1402 goto nomem;
1403
1404 c->srcBpc = desc_src->comp[0].depth;
1405 if (c->srcBpc < 8)
1406 c->srcBpc = 8;
1407 c->dstBpc = desc_dst->comp[0].depth;
1408 if (c->dstBpc < 8)
1409 c->dstBpc = 8;
1410 if (isAnyRGB(srcFormat) || srcFormat == AV_PIX_FMT_PAL8)
1411 c->srcBpc = 16;
1412 if (c->dstBpc == 16)
1413 dst_stride <<= 1;
1414
1415 if (INLINE_MMXEXT(cpu_flags) && c->srcBpc == 8 && c->dstBpc <= 14) {
1416 c->canMMXEXTBeUsed = dstW >= srcW && (dstW & 31) == 0 &&
1417 c->chrDstW >= c->chrSrcW &&
1418 (srcW & 15) == 0;
1419 if (!c->canMMXEXTBeUsed && dstW >= srcW && c->chrDstW >= c->chrSrcW && (srcW & 15) == 0
1420
1421 && (flags & SWS_FAST_BILINEAR)) {
1422 if (flags & SWS_PRINT_INFO)
1423 av_log(c, AV_LOG_INFO,
1424 "output width is not a multiple of 32 -> no MMXEXT scaler\n");
1425 }
1426 if (usesHFilter || isNBPS(sws->src_format) || is16BPS(sws->src_format) || isAnyRGB(sws->src_format))
1427 c->canMMXEXTBeUsed = 0;
1428 } else
1429 c->canMMXEXTBeUsed = 0;
1430
1431 int64_t chrXInc = (((int64_t)c->chrSrcW << 16) + (c->chrDstW >> 1)) / c->chrDstW;
1432 int64_t chrYInc = (((int64_t)c->chrSrcH << 16) + (c->chrDstH >> 1)) / c->chrDstH;
1433
1434 /* Match pixel 0 of the src to pixel 0 of dst and match pixel n-2 of src
1435 * to pixel n-2 of dst, but only for the FAST_BILINEAR mode otherwise do
1436 * correct scaling.
1437 * n-2 is the last chrominance sample available.
1438 * This is not perfect, but no one should notice the difference, the more
1439 * correct variant would be like the vertical one, but that would require
1440 * some special code for the first and last pixel */
1441 if (flags & SWS_FAST_BILINEAR) {
1442 if (c->canMMXEXTBeUsed) {
1443 lumXInc += 20;
1444 chrXInc += 20;
1445 }
1446 // we don't use the x86 asm scaler if MMX is available
1447 else if (INLINE_MMX(cpu_flags) && c->dstBpc <= 14) {
1448 lumXInc = ((int64_t)(srcW - 2) << 16) / (dstW - 2) - 20;
1449 chrXInc = ((int64_t)(c->chrSrcW - 2) << 16) / (c->chrDstW - 2) - 20;
1450 }
1451 }
1452 if (chrXInc < 10 || chrXInc > INT_MAX ||
1453 chrYInc < 10 || chrYInc > INT_MAX ||
1454 lumXInc < 10 || lumXInc > INT_MAX ||
1455 lumYInc < 10 || lumYInc > INT_MAX)
1456 return AVERROR_PATCHWELCOME;
1457
1458 c->lumXInc = lumXInc;
1459 c->lumYInc = lumYInc;
1460 c->chrXInc = chrXInc;
1461 c->chrYInc = chrYInc;
1462
1463
1464 // hardcoded for now
1465 c->gamma_value = 2.2;
1466 tmpFmt = AV_PIX_FMT_RGBA64LE;
1467
1468 if (!unscaled && sws->gamma_flag && (srcFormat != tmpFmt || dstFormat != tmpFmt)) {
1469 SwsInternal *c2;
1470 c->cascaded_context[0] = NULL;
1471
1472 ret = av_image_alloc(c->cascaded_tmp[0], c->cascaded_tmpStride[0],
1473 srcW, srcH, tmpFmt, 64);
1474 if (ret < 0)
1475 return ret;
1476
1477 c->cascaded_context[0] = sws_getContext(srcW, srcH, srcFormat,
1478 srcW, srcH, tmpFmt,
1479 flags, NULL, NULL,
1480 sws->scaler_params);
1481 if (!c->cascaded_context[0]) {
1482 return AVERROR(ENOMEM);
1483 }
1484
1485 c->cascaded_context[1] = sws_getContext(srcW, srcH, tmpFmt,
1486 dstW, dstH, tmpFmt,
1487 flags, srcFilter, dstFilter,
1488 sws->scaler_params);
1489
1490 if (!c->cascaded_context[1])
1491 return AVERROR(ENOMEM);
1492
1493 c2 = sws_internal(c->cascaded_context[1]);
1494 c2->is_internal_gamma = 1;
1495 c2->gamma = alloc_gamma_tbl( c->gamma_value);
1496 c2->inv_gamma = alloc_gamma_tbl(1.f/c->gamma_value);
1497 if (!c2->gamma || !c2->inv_gamma)
1498 return AVERROR(ENOMEM);
1499
1500 // is_internal_flag is set after creating the context
1501 // to properly create the gamma convert FilterDescriptor
1502 // we have to re-initialize it
1503 ff_free_filters(c2);
1504 if ((ret = ff_init_filters(c2)) < 0) {
1505 sws_freeContext(c->cascaded_context[1]);
1506 c->cascaded_context[1] = NULL;
1507 return ret;
1508 }
1509
1510 c->cascaded_context[2] = NULL;
1511 if (dstFormat != tmpFmt) {
1512 ret = av_image_alloc(c->cascaded_tmp[1], c->cascaded_tmpStride[1],
1513 dstW, dstH, tmpFmt, 64);
1514 if (ret < 0)
1515 return ret;
1516
1517 c->cascaded_context[2] = sws_getContext(dstW, dstH, tmpFmt,
1518 dstW, dstH, dstFormat,
1519 flags, NULL, NULL,
1520 sws->scaler_params);
1521 if (!c->cascaded_context[2])
1522 return AVERROR(ENOMEM);
1523 }
1524 return 0;
1525 }
1526
1527 if (isBayer(srcFormat)) {
1528 if (!unscaled ||
1529 (dstFormat != AV_PIX_FMT_RGB24 && dstFormat != AV_PIX_FMT_YUV420P &&
1530 dstFormat != AV_PIX_FMT_RGB48)) {
1531 enum AVPixelFormat tmpFormat = isBayer16BPS(srcFormat) ? AV_PIX_FMT_RGB48 : AV_PIX_FMT_RGB24;
1532
1533 ret = av_image_alloc(c->cascaded_tmp[0], c->cascaded_tmpStride[0],
1534 srcW, srcH, tmpFormat, 64);
1535 if (ret < 0)
1536 return ret;
1537
1538 c->cascaded_context[0] = sws_getContext(srcW, srcH, srcFormat,
1539 srcW, srcH, tmpFormat,
1540 flags, srcFilter, NULL,
1541 sws->scaler_params);
1542 if (!c->cascaded_context[0])
1543 return AVERROR(ENOMEM);
1544
1545 c->cascaded_context[1] = sws_getContext(srcW, srcH, tmpFormat,
1546 dstW, dstH, dstFormat,
1547 flags, NULL, dstFilter,
1548 sws->scaler_params);
1549 if (!c->cascaded_context[1])
1550 return AVERROR(ENOMEM);
1551 return 0;
1552 }
1553 }
1554
1555 if (unscaled && c->srcBpc == 8 && dstFormat == AV_PIX_FMT_GRAYF32){
1556 for (i = 0; i < 256; ++i){
1557 c->uint2float_lut[i] = (float)i * float_mult;
1558 }
1559 }
1560
1561 // float will be converted to uint16_t
1562 if (isFloat(srcFormat) && !isAnyRGB(srcFormat) &&
1563 (!unscaled || unscaled && dstFormat != srcFormat && (srcFormat != AV_PIX_FMT_GRAYF32 ||
1564 dstFormat != AV_PIX_FMT_GRAY8))){
1565 c->srcBpc = 16;
1566 }
1567
1568 if (CONFIG_SWSCALE_ALPHA && isALPHA(srcFormat) && !isALPHA(dstFormat)) {
1569 enum AVPixelFormat tmpFormat = alphaless_fmt(srcFormat);
1570
1571 if (tmpFormat != AV_PIX_FMT_NONE && sws->alpha_blend != SWS_ALPHA_BLEND_NONE) {
1572 if (!unscaled ||
1573 dstFormat != tmpFormat ||
1574 usesHFilter || usesVFilter ||
1575 sws->src_range != sws->dst_range
1576 ) {
1577 c->cascaded_mainindex = 1;
1578 ret = av_image_alloc(c->cascaded_tmp[0], c->cascaded_tmpStride[0],
1579 srcW, srcH, tmpFormat, 64);
1580 if (ret < 0)
1581 return ret;
1582
1583 c->cascaded_context[0] = alloc_set_opts(srcW, srcH, srcFormat,
1584 srcW, srcH, tmpFormat,
1585 flags, sws->scaler_params);
1586 if (!c->cascaded_context[0])
1587 return AVERROR(EINVAL);
1588 c->cascaded_context[0]->alpha_blend = sws->alpha_blend;
1589 ret = sws_init_context(c->cascaded_context[0], NULL , NULL);
1590 if (ret < 0)
1591 return ret;
1592
1593 c->cascaded_context[1] = alloc_set_opts(srcW, srcH, tmpFormat,
1594 dstW, dstH, dstFormat,
1595 flags, sws->scaler_params);
1596 if (!c->cascaded_context[1])
1597 return AVERROR(EINVAL);
1598
1599 c->cascaded_context[1]->src_range = sws->src_range;
1600 c->cascaded_context[1]->dst_range = sws->dst_range;
1601 ret = sws_init_context(c->cascaded_context[1], srcFilter , dstFilter);
1602 if (ret < 0)
1603 return ret;
1604
1605 return 0;
1606 }
1607 }
1608 }
1609
1610 /* alpha blend special case, note this has been split via cascaded contexts if its scaled */
1611 if (unscaled && !usesHFilter && !usesVFilter &&
1612 sws->alpha_blend != SWS_ALPHA_BLEND_NONE &&
1613 isALPHA(srcFormat) &&
1614 (sws->src_range == sws->dst_range || isAnyRGB(dstFormat)) &&
1615 alphaless_fmt(srcFormat) == dstFormat
1616 ) {
1617 c->convert_unscaled = ff_sws_alphablendaway;
1618
1619 if (flags & SWS_PRINT_INFO)
1620 av_log(c, AV_LOG_INFO,
1621 "using alpha blendaway %s -> %s special converter\n",
1622 av_get_pix_fmt_name(srcFormat), av_get_pix_fmt_name(dstFormat));
1623 return 0;
1624 }
1625
1626 /* unscaled special cases */
1627 if (unscaled && !usesHFilter && !usesVFilter &&
1628 (sws->src_range == sws->dst_range || isAnyRGB(dstFormat) ||
1629 isFloat(srcFormat) || isFloat(dstFormat) || isBayer(srcFormat))){
1630
1631 ff_get_unscaled_swscale(c);
1632
1633 if (c->convert_unscaled) {
1634 if (flags & SWS_PRINT_INFO)
1635 av_log(c, AV_LOG_INFO,
1636 "using unscaled %s -> %s special converter\n",
1637 av_get_pix_fmt_name(srcFormat), av_get_pix_fmt_name(dstFormat));
1638 return 0;
1639 }
1640 }
1641
1642 /* precalculate horizontal scaler filter coefficients */
1643 {
1644#if HAVE_MMXEXT_INLINE
1645// can't downscale !!!
1646 if (c->canMMXEXTBeUsed && (flags & SWS_FAST_BILINEAR)) {
1647 c->lumMmxextFilterCodeSize = ff_init_hscaler_mmxext(dstW, c->lumXInc, NULL,
1648 NULL, NULL, 8);
1649 c->chrMmxextFilterCodeSize = ff_init_hscaler_mmxext(c->chrDstW, c->chrXInc,
1650 NULL, NULL, NULL, 4);
1651
1652 c->lumMmxextFilterCode = ff_sws_jit_alloc(c->lumMmxextFilterCodeSize);
1653 c->chrMmxextFilterCode = ff_sws_jit_alloc(c->chrMmxextFilterCodeSize);
1654 if (!c->lumMmxextFilterCode || !c->chrMmxextFilterCode) {
1655 av_log(c, AV_LOG_ERROR, "Failed to allocate MMX2FilterCode\n");
1656 return AVERROR(ENOMEM);
1657 }
1658
1659 if (!FF_ALLOCZ_TYPED_ARRAY(c->hLumFilter, dstW / 8 + 8) ||
1660 !FF_ALLOCZ_TYPED_ARRAY(c->hChrFilter, c->chrDstW / 4 + 8) ||
1661 !FF_ALLOCZ_TYPED_ARRAY(c->hLumFilterPos, dstW / 2 / 8 + 8) ||
1662 !FF_ALLOCZ_TYPED_ARRAY(c->hChrFilterPos, c->chrDstW / 2 / 4 + 8))
1663 goto nomem;
1664
1665 ff_init_hscaler_mmxext( dstW, c->lumXInc, c->lumMmxextFilterCode,
1666 c->hLumFilter, (uint32_t*)c->hLumFilterPos, 8);
1667 ff_init_hscaler_mmxext(c->chrDstW, c->chrXInc, c->chrMmxextFilterCode,
1668 c->hChrFilter, (uint32_t*)c->hChrFilterPos, 4);
1669
1670 if ((ret = ff_sws_jit_protect(c->lumMmxextFilterCode, c->lumMmxextFilterCodeSize)) < 0 ||
1671 (ret = ff_sws_jit_protect(c->chrMmxextFilterCode, c->chrMmxextFilterCodeSize)) < 0) {
1672 av_log(c, AV_LOG_ERROR, "mprotect failed, cannot use fast bilinear scaler\n");
1673 goto fail;
1674 }
1675 } else
1676#endif /* HAVE_MMXEXT_INLINE */
1677 {
1678 const int filterAlign = X86_MMX(cpu_flags) ? 4 :
1679 PPC_ALTIVEC(cpu_flags) ? 8 :
1680 have_neon(cpu_flags) ? 4 :
1681 have_lsx(cpu_flags) ? 8 :
1682 have_lasx(cpu_flags) ? 8 : 1;
1683
1684 if ((ret = initFilter(&c->hLumFilter, &c->hLumFilterPos,
1685 &c->hLumFilterSize, c->lumXInc,
1686 srcW, dstW, filterAlign, 1 << 14,
1687 lum_scaler, flags,
1688 cpu_flags, srcFilter->lumH, dstFilter->lumH,
1689 sws->scaler_params,
1690 get_local_pos(c, 0, 0, 0),
1691 get_local_pos(c, 0, 0, 0))) < 0)
1692 goto fail;
1693 if (ff_shuffle_filter_coefficients(c, c->hLumFilterPos, c->hLumFilterSize, c->hLumFilter, dstW) < 0)
1694 goto nomem;
1695 if ((ret = initFilter(&c->hChrFilter, &c->hChrFilterPos,
1696 &c->hChrFilterSize, c->chrXInc,
1697 c->chrSrcW, c->chrDstW, filterAlign, 1 << 14,
1698 chr_scaler, flags,
1699 cpu_flags, srcFilter->chrH, dstFilter->chrH,
1700 sws->scaler_params,
1701 get_local_pos(c, c->chrSrcHSubSample, sws->src_h_chr_pos, 0),
1702 get_local_pos(c, c->chrDstHSubSample, sws->dst_h_chr_pos, 0))) < 0)
1703 goto fail;
1704 if (ff_shuffle_filter_coefficients(c, c->hChrFilterPos, c->hChrFilterSize, c->hChrFilter, c->chrDstW) < 0)
1705 goto nomem;
1706 }
1707 } // initialize horizontal stuff
1708
1709 /* precalculate vertical scaler filter coefficients */
1710 {
1711 const int filterAlign = X86_MMX(cpu_flags) ? 2 :
1712 PPC_ALTIVEC(cpu_flags) ? 8 :
1713 have_neon(cpu_flags) ? 2 : 1;
1714
1715 ret = initFilter(&c->vLumFilter, &c->vLumFilterPos, &c->vLumFilterSize,
1716 c->lumYInc, srcH, dstH, filterAlign, (1 << 12),
1717 lum_scaler, flags,
1718 cpu_flags, srcFilter->lumV, dstFilter->lumV,
1719 sws->scaler_params,
1720 get_local_pos(c, 0, 0, 1),
1721 get_local_pos(c, 0, 0, 1));
1722 int usecascade = (ret == RETCODE_USE_CASCADE);
1723 if (ret < 0 && !usecascade)
1724 goto fail;
1725 if ((ret = initFilter(&c->vChrFilter, &c->vChrFilterPos, &c->vChrFilterSize,
1726 c->chrYInc, c->chrSrcH, c->chrDstH,
1727 filterAlign, (1 << 12),
1728 chr_scaler, flags,
1729 cpu_flags, srcFilter->chrV, dstFilter->chrV,
1730 sws->scaler_params,
1731 get_local_pos(c, c->chrSrcVSubSample, sws->src_v_chr_pos, 1),
1732 get_local_pos(c, c->chrDstVSubSample, sws->dst_v_chr_pos, 1))) < 0)
1733
1734 goto fail;
1735 if (usecascade) {
1736 ret = RETCODE_USE_CASCADE;
1737 goto fail;
1738 }
1739
1740#if HAVE_ALTIVEC
1741 ret = ff_sws_init_altivec_bufs(c);
1742 if (ret < 0)
1743 goto fail;
1744#endif
1745 }
1746
1747 for (i = 0; i < 4; i++)
1748 if (!FF_ALLOCZ_TYPED_ARRAY(c->dither_error[i], sws->dst_w + 3))
1749 goto nomem;
1750
1751 c->needAlpha = (CONFIG_SWSCALE_ALPHA && isALPHA(sws->src_format) && isALPHA(sws->dst_format)) ? 1 : 0;
1752
1753 // 64 / c->scalingBpp is the same as 16 / sizeof(scaling_intermediate)
1754 c->uv_off = (dst_stride>>1) + 64 / (c->dstBpc &~ 7);
1755 c->uv_offx2 = dst_stride + 16;
1756
1757 av_assert0(c->chrDstH <= dstH);
1758
1759 if (flags & SWS_PRINT_INFO) {
1760 const char *scaler = NULL, *cpucaps;
1761
1762 for (i = 0; i < FF_ARRAY_ELEMS(scale_algorithms); i++) {
1763 if (info_scaler == scale_algorithms[i].flag) {
1764 scaler = scale_algorithms[i].description;
1765 break;
1766 }
1767 }
1768 if (!scaler)
1769 scaler = "ehh flags invalid?!";
1770 av_log(c, AV_LOG_INFO, "%s scaler, from %s to %s%s ",
1771 scaler,
1772 av_get_pix_fmt_name(srcFormat),
1773 dstFormat == AV_PIX_FMT_BGR555 || dstFormat == AV_PIX_FMT_BGR565 ||
1774 dstFormat == AV_PIX_FMT_RGB444BE || dstFormat == AV_PIX_FMT_RGB444LE ||
1775 dstFormat == AV_PIX_FMT_BGR444BE || dstFormat == AV_PIX_FMT_BGR444LE ?
1776 "dithered " : "",
1777 av_get_pix_fmt_name(dstFormat));
1778
1779 if (INLINE_MMXEXT(cpu_flags))
1780 cpucaps = "MMXEXT";
1781 else if (INLINE_MMX(cpu_flags))
1782 cpucaps = "MMX";
1783 else if (PPC_ALTIVEC(cpu_flags))
1784 cpucaps = "AltiVec";
1785 else
1786 cpucaps = "C";
1787
1788 av_log(c, AV_LOG_INFO, "using %s\n", cpucaps);
1789
1790 av_log(c, AV_LOG_VERBOSE, "%dx%d -> %dx%d\n", srcW, srcH, dstW, dstH);
1791 av_log(c, AV_LOG_DEBUG,
1792 "lum srcW=%d srcH=%d dstW=%d dstH=%d xInc=%d yInc=%d\n",
1793 sws->src_w, sws->src_h, sws->dst_w, sws->dst_h, c->lumXInc, c->lumYInc);
1794 av_log(c, AV_LOG_DEBUG,
1795 "chr srcW=%d srcH=%d dstW=%d dstH=%d xInc=%d yInc=%d\n",
1796 c->chrSrcW, c->chrSrcH, c->chrDstW, c->chrDstH,
1797 c->chrXInc, c->chrYInc);
1798 }
1799
1800 ff_sws_init_scale(c);
1801
1802 return ff_init_filters(c);
1803nomem:
1804 ret = AVERROR(ENOMEM);
1805fail: // FIXME replace things by appropriate error codes
1806 if (ret == RETCODE_USE_CASCADE) {
1807 int tmpW = sqrt(srcW * (int64_t)dstW);
1808 int tmpH = sqrt(srcH * (int64_t)dstH);
1809 enum AVPixelFormat tmpFormat = AV_PIX_FMT_YUV420P;
1810
1811 if (isALPHA(srcFormat))
1812 tmpFormat = AV_PIX_FMT_YUVA420P;
1813
1814 if (srcW*(int64_t)srcH <= 4LL*dstW*dstH)
1815 return AVERROR(EINVAL);
1816
1817 ret = av_image_alloc(c->cascaded_tmp[0], c->cascaded_tmpStride[0],
1818 tmpW, tmpH, tmpFormat, 64);
1819 if (ret < 0)
1820 return ret;
1821
1822 c->cascaded_context[0] = sws_getContext(srcW, srcH, srcFormat,
1823 tmpW, tmpH, tmpFormat,
1824 flags, srcFilter, NULL,
1825 sws->scaler_params);
1826 if (!c->cascaded_context[0])
1827 return AVERROR(ENOMEM);
1828
1829 c->cascaded_context[1] = sws_getContext(tmpW, tmpH, tmpFormat,
1830 dstW, dstH, dstFormat,
1831 flags, NULL, dstFilter,
1832 sws->scaler_params);
1833 if (!c->cascaded_context[1])
1834 return AVERROR(ENOMEM);
1835 return 0;
1836 }
1837 return ret;
1838}
1839
1840static int context_init_threaded(SwsContext *sws,
1841 SwsFilter *src_filter, SwsFilter *dst_filter)
1842{
1843 SwsInternal *c = sws_internal(sws);
1844 int ret;
1845
1846 ret = avpriv_slicethread_create2(&c->slicethread, (void*) sws,
1847 ff_sws_slice_worker, NULL, sws->threads);
1848 if (ret == AVERROR(ENOSYS)) {
1849 sws->threads = 1;
1850 return 0;
1851 } else if (ret < 0)
1852 return ret;
1853
1854 sws->threads = ret;
1855
1856 c->slice_ctx = av_calloc(sws->threads, sizeof(*c->slice_ctx));
1857 if (!c->slice_ctx)
1858 return AVERROR(ENOMEM);
1859
1860 for (int i = 0; i < sws->threads; i++) {
1861 SwsContext *slice;
1862 slice = c->slice_ctx[i] = sws_alloc_context();
1863 if (!slice)
1864 return AVERROR(ENOMEM);
1865 sws_internal(slice)->parent = sws;
1866 c->nb_slice_ctx++;
1867
1868 ret = av_opt_copy(slice, sws);
1869 if (ret < 0)
1870 return ret;
1871 slice->threads = 1;
1872
1873 ret = ff_sws_init_single_context(slice, src_filter, dst_filter);
1874 if (ret < 0)
1875 return ret;
1876
1877 if (slice->dither == SWS_DITHER_ED) {
1878 av_log(c, AV_LOG_VERBOSE,
1879 "Error-diffusion dither is in use, scaling will be single-threaded.");
1880 break;
1881 }
1882 }
1883
1884 return 0;
1885}
1886
1887av_cold int sws_init_context(SwsContext *sws, SwsFilter *srcFilter,
1888 SwsFilter *dstFilter)
1889{
1890 SwsInternal *c = sws_internal(sws);
1891 static AVOnce rgb2rgb_once = AV_ONCE_INIT;
1892 enum AVPixelFormat src_format, dst_format;
1893 int ret;
1894
1895 c->is_legacy_init = 1;
1896 c->frame_src = av_frame_alloc();
1897 c->frame_dst = av_frame_alloc();
1898 if (!c->frame_src || !c->frame_dst)
1899 return AVERROR(ENOMEM);
1900
1901 if (ff_thread_once(&rgb2rgb_once, ff_sws_rgb2rgb_init) != 0)
1902 return AVERROR_UNKNOWN;
1903
1904 src_format = sws->src_format;
1905 dst_format = sws->dst_format;
1906 sws->src_range |= handle_jpeg(&sws->src_format);
1907 sws->dst_range |= handle_jpeg(&sws->dst_format);
1908
1909 if (src_format != sws->src_format || dst_format != sws->dst_format)
1910 av_log(c, AV_LOG_WARNING, "deprecated pixel format used, make sure you did set range correctly\n");
1911
1912 if (sws->threads != 1) {
1913 ret = context_init_threaded(sws, srcFilter, dstFilter);
1914 if (ret < 0 || sws->threads > 1)
1915 return ret;
1916 // threading disabled in this build, init as single-threaded
1917 }
1918
1919 return ff_sws_init_single_context(sws, srcFilter, dstFilter);
1920}
1921
1922SwsContext *sws_getContext(int srcW, int srcH, enum AVPixelFormat srcFormat,
1923 int dstW, int dstH, enum AVPixelFormat dstFormat,
1924 int flags, SwsFilter *srcFilter,
1925 SwsFilter *dstFilter, const double *param)
1926{
1927 SwsContext *sws;
1928
1929 sws = alloc_set_opts(srcW, srcH, srcFormat,
1930 dstW, dstH, dstFormat,
1931 flags, param);
1932 if (!sws)
1933 return NULL;
1934
1935 if (sws_init_context(sws, srcFilter, dstFilter) < 0) {
1936 sws_freeContext(sws);
1937 return NULL;
1938 }
1939
1940 return sws;
1941}
1942
1943static int isnan_vec(SwsVector *a)
1944{
1945 int i;
1946 for (i=0; i<a->length; i++)
1947 if (isnan(a->coeff[i]))
1948 return 1;
1949 return 0;
1950}
1951
1952static void makenan_vec(SwsVector *a)
1953{
1954 int i;
1955 for (i=0; i<a->length; i++)
1956 a->coeff[i] = NAN;
1957}
1958
1959SwsVector *sws_allocVec(int length)
1960{
1961 SwsVector *vec;
1962
1963 if(length <= 0 || length > INT_MAX/ sizeof(double))
1964 return NULL;
1965
1966 vec = av_malloc(sizeof(SwsVector));
1967 if (!vec)
1968 return NULL;
1969 vec->length = length;
1970 vec->coeff = av_malloc(sizeof(double) * length);
1971 if (!vec->coeff)
1972 av_freep(&vec);
1973 return vec;
1974}
1975
1976SwsVector *sws_getGaussianVec(double variance, double quality)
1977{
1978 const int length = (int)(variance * quality + 0.5) | 1;
1979 int i;
1980 double middle = (length - 1) * 0.5;
1981 SwsVector *vec;
1982
1983 if(variance < 0 || quality < 0)
1984 return NULL;
1985
1986 vec = sws_allocVec(length);
1987
1988 if (!vec)
1989 return NULL;
1990
1991 for (i = 0; i < length; i++) {
1992 double dist = i - middle;
1993 vec->coeff[i] = exp(-dist * dist / (2 * variance * variance)) /
1994 sqrt(2 * variance * M_PI);
1995 }
1996
1997 sws_normalizeVec(vec, 1.0);
1998
1999 return vec;
2000}
2001
2002/**
2003 * Allocate and return a vector with length coefficients, all
2004 * with the same value c.
2005 */
2006static
2007SwsVector *sws_getConstVec(double c, int length)
2008{
2009 int i;
2010 SwsVector *vec = sws_allocVec(length);
2011
2012 if (!vec)
2013 return NULL;
2014
2015 for (i = 0; i < length; i++)
2016 vec->coeff[i] = c;
2017
2018 return vec;
2019}
2020
2021/**
2022 * Allocate and return a vector with just one coefficient, with
2023 * value 1.0.
2024 */
2025static
2026SwsVector *sws_getIdentityVec(void)
2027{
2028 return sws_getConstVec(1.0, 1);
2029}
2030
2031static double sws_dcVec(SwsVector *a)
2032{
2033 int i;
2034 double sum = 0;
2035
2036 for (i = 0; i < a->length; i++)
2037 sum += a->coeff[i];
2038
2039 return sum;
2040}
2041
2042void sws_scaleVec(SwsVector *a, double scalar)
2043{
2044 int i;
2045
2046 for (i = 0; i < a->length; i++)
2047 a->coeff[i] *= scalar;
2048}
2049
2050void sws_normalizeVec(SwsVector *a, double height)
2051{
2052 sws_scaleVec(a, height / sws_dcVec(a));
2053}
2054
2055static SwsVector *sws_sumVec(SwsVector *a, SwsVector *b)
2056{
2057 int length = FFMAX(a->length, b->length);
2058 int i;
2059 SwsVector *vec = sws_getConstVec(0.0, length);
2060
2061 if (!vec)
2062 return NULL;
2063
2064 for (i = 0; i < a->length; i++)
2065 vec->coeff[i + (length - 1) / 2 - (a->length - 1) / 2] += a->coeff[i];
2066 for (i = 0; i < b->length; i++)
2067 vec->coeff[i + (length - 1) / 2 - (b->length - 1) / 2] += b->coeff[i];
2068
2069 return vec;
2070}
2071
2072/* shift left / or right if "shift" is negative */
2073static SwsVector *sws_getShiftedVec(SwsVector *a, int shift)
2074{
2075 int length = a->length + FFABS(shift) * 2;
2076 int i;
2077 SwsVector *vec = sws_getConstVec(0.0, length);
2078
2079 if (!vec)
2080 return NULL;
2081
2082 for (i = 0; i < a->length; i++) {
2083 vec->coeff[i + (length - 1) / 2 -
2084 (a->length - 1) / 2 - shift] = a->coeff[i];
2085 }
2086
2087 return vec;
2088}
2089
2090static
2091void sws_shiftVec(SwsVector *a, int shift)
2092{
2093 SwsVector *shifted = sws_getShiftedVec(a, shift);
2094 if (!shifted) {
2095 makenan_vec(a);
2096 return;
2097 }
2098 av_free(a->coeff);
2099 a->coeff = shifted->coeff;
2100 a->length = shifted->length;
2101 av_free(shifted);
2102}
2103
2104static
2105void sws_addVec(SwsVector *a, SwsVector *b)
2106{
2107 SwsVector *sum = sws_sumVec(a, b);
2108 if (!sum) {
2109 makenan_vec(a);
2110 return;
2111 }
2112 av_free(a->coeff);
2113 a->coeff = sum->coeff;
2114 a->length = sum->length;
2115 av_free(sum);
2116}
2117
2118/**
2119 * Print with av_log() a textual representation of the vector a
2120 * if log_level <= av_log_level.
2121 */
2122static
2123void sws_printVec2(SwsVector *a, AVClass *log_ctx, int log_level)
2124{
2125 int i;
2126 double max = 0;
2127 double min = 0;
2128 double range;
2129
2130 for (i = 0; i < a->length; i++)
2131 if (a->coeff[i] > max)
2132 max = a->coeff[i];
2133
2134 for (i = 0; i < a->length; i++)
2135 if (a->coeff[i] < min)
2136 min = a->coeff[i];
2137
2138 range = max - min;
2139
2140 for (i = 0; i < a->length; i++) {
2141 int x = (int)((a->coeff[i] - min) * 60.0 / range + 0.5);
2142 av_log(log_ctx, log_level, "%1.3f ", a->coeff[i]);
2143 for (; x > 0; x--)
2144 av_log(log_ctx, log_level, " ");
2145 av_log(log_ctx, log_level, "|\n");
2146 }
2147}
2148
2149void sws_freeVec(SwsVector *a)
2150{
2151 if (!a)
2152 return;
2153 av_freep(&a->coeff);
2154 a->length = 0;
2155 av_free(a);
2156}
2157
2158void sws_freeFilter(SwsFilter *filter)
2159{
2160 if (!filter)
2161 return;
2162
2163 sws_freeVec(filter->lumH);
2164 sws_freeVec(filter->lumV);
2165 sws_freeVec(filter->chrH);
2166 sws_freeVec(filter->chrV);
2167 av_free(filter);
2168}
2169
2170SwsFilter *sws_getDefaultFilter(float lumaGBlur, float chromaGBlur,
2171 float lumaSharpen, float chromaSharpen,
2172 float chromaHShift, float chromaVShift,
2173 int verbose)
2174{
2175 SwsFilter *filter = av_malloc(sizeof(SwsFilter));
2176 if (!filter)
2177 return NULL;
2178
2179 if (lumaGBlur != 0.0) {
2180 filter->lumH = sws_getGaussianVec(lumaGBlur, 3.0);
2181 filter->lumV = sws_getGaussianVec(lumaGBlur, 3.0);
2182 } else {
2183 filter->lumH = sws_getIdentityVec();
2184 filter->lumV = sws_getIdentityVec();
2185 }
2186
2187 if (chromaGBlur != 0.0) {
2188 filter->chrH = sws_getGaussianVec(chromaGBlur, 3.0);
2189 filter->chrV = sws_getGaussianVec(chromaGBlur, 3.0);
2190 } else {
2191 filter->chrH = sws_getIdentityVec();
2192 filter->chrV = sws_getIdentityVec();
2193 }
2194
2195 if (!filter->lumH || !filter->lumV || !filter->chrH || !filter->chrV)
2196 goto fail;
2197
2198 if (chromaSharpen != 0.0) {
2199 SwsVector *id = sws_getIdentityVec();
2200 if (!id)
2201 goto fail;
2202 sws_scaleVec(filter->chrH, -chromaSharpen);
2203 sws_scaleVec(filter->chrV, -chromaSharpen);
2204 sws_addVec(filter->chrH, id);
2205 sws_addVec(filter->chrV, id);
2206 sws_freeVec(id);
2207 }
2208
2209 if (lumaSharpen != 0.0) {
2210 SwsVector *id = sws_getIdentityVec();
2211 if (!id)
2212 goto fail;
2213 sws_scaleVec(filter->lumH, -lumaSharpen);
2214 sws_scaleVec(filter->lumV, -lumaSharpen);
2215 sws_addVec(filter->lumH, id);
2216 sws_addVec(filter->lumV, id);
2217 sws_freeVec(id);
2218 }
2219
2220 if (chromaHShift != 0.0)
2221 sws_shiftVec(filter->chrH, (int)(chromaHShift + 0.5));
2222
2223 if (chromaVShift != 0.0)
2224 sws_shiftVec(filter->chrV, (int)(chromaVShift + 0.5));
2225
2226 sws_normalizeVec(filter->chrH, 1.0);
2227 sws_normalizeVec(filter->chrV, 1.0);
2228 sws_normalizeVec(filter->lumH, 1.0);
2229 sws_normalizeVec(filter->lumV, 1.0);
2230
2231 if (isnan_vec(filter->chrH) ||
2232 isnan_vec(filter->chrV) ||
2233 isnan_vec(filter->lumH) ||
2234 isnan_vec(filter->lumV))
2235 goto fail;
2236
2237 if (verbose)
2238 sws_printVec2(filter->chrH, NULL, AV_LOG_DEBUG);
2239 if (verbose)
2240 sws_printVec2(filter->lumH, NULL, AV_LOG_DEBUG);
2241
2242 return filter;
2243
2244fail:
2245 sws_freeVec(filter->lumH);
2246 sws_freeVec(filter->lumV);
2247 sws_freeVec(filter->chrH);
2248 sws_freeVec(filter->chrV);
2249 av_freep(&filter);
2250 return NULL;
2251}
2252
2253void sws_freeContext(SwsContext *sws)
2254{
2255 SwsInternal *c = sws_internal(sws);
2256 int i;
2257 if (!c)
2258 return;
2259
2260 av_refstruct_unref(&c->hw_priv);
2261
2262 for (i = 0; i < FF_ARRAY_ELEMS(c->graph); i++)
2263 ff_sws_graph_free(&c->graph[i]);
2264 ff_frame_pool_uninit(&c->frame_pool);
2265
2266 for (i = 0; i < c->nb_slice_ctx; i++)
2267 sws_freeContext(c->slice_ctx[i]);
2268 av_freep(&c->slice_ctx);
2269
2270 avpriv_slicethread_free(&c->slicethread);
2271
2272 for (i = 0; i < 4; i++)
2273 av_freep(&c->dither_error[i]);
2274
2275 av_frame_free(&c->frame_src);
2276 av_frame_free(&c->frame_dst);
2277
2278 av_freep(&c->src_ranges.ranges);
2279
2280 av_freep(&c->vLumFilter);
2281 av_freep(&c->vChrFilter);
2282 av_freep(&c->hLumFilter);
2283 av_freep(&c->hChrFilter);
2284#if HAVE_ALTIVEC
2285 ff_sws_free_altivec_bufs(c);
2286#endif
2287
2288 av_freep(&c->vLumFilterPos);
2289 av_freep(&c->vChrFilterPos);
2290 av_freep(&c->hLumFilterPos);
2291 av_freep(&c->hChrFilterPos);
2292
2293#if HAVE_MMX_INLINE
2294 ff_sws_jit_free(c->lumMmxextFilterCode, c->lumMmxextFilterCodeSize);
2295 ff_sws_jit_free(c->chrMmxextFilterCode, c->chrMmxextFilterCodeSize);
2296 c->lumMmxextFilterCode = NULL;
2297 c->chrMmxextFilterCode = NULL;
2298#endif /* HAVE_MMX_INLINE */
2299
2300 av_freep(&c->yuvTable);
2301 av_freep(&c->formatConvBuffer);
2302
2303 sws_freeContext(c->cascaded_context[0]);
2304 sws_freeContext(c->cascaded_context[1]);
2305 sws_freeContext(c->cascaded_context[2]);
2306 memset(c->cascaded_context, 0, sizeof(c->cascaded_context));
2307 av_freep(&c->cascaded_tmp[0][0]);
2308 av_freep(&c->cascaded_tmp[1][0]);
2309
2310 av_freep(&c->gamma);
2311 av_freep(&c->inv_gamma);
2312#if CONFIG_SMALL
2313 av_freep(&c->xyz2rgb.gamma.in);
2314#endif
2315
2316 av_freep(&c->rgb0_scratch);
2317 av_freep(&c->xyz_scratch);
2318
2319 ff_free_filters(c);
2320
2321 av_free(c);
2322}
2323
2324void sws_free_context(SwsContext **pctx)
2325{
2326 SwsContext *ctx = *pctx;
2327 if (!ctx)
2328 return;
2329
2330 sws_freeContext(ctx);
2331 *pctx = NULL;
2332}
2333
2334SwsContext *sws_getCachedContext(SwsContext *prev, int srcW,
2335 int srcH, enum AVPixelFormat srcFormat,
2336 int dstW, int dstH,
2337 enum AVPixelFormat dstFormat, int flags,
2338 SwsFilter *srcFilter,
2339 SwsFilter *dstFilter,
2340 const double *param)
2341{
2342 SwsContext *sws;
2343 static const double default_param[2] = { SWS_PARAM_DEFAULT,
2344 SWS_PARAM_DEFAULT };
2345
2346 if (!param)
2347 param = default_param;
2348
2349 if (prev && (prev->src_w == srcW &&
2350 prev->src_h == srcH &&
2351 prev->src_format == srcFormat &&
2352 prev->dst_w == dstW &&
2353 prev->dst_h == dstH &&
2354 prev->dst_format == dstFormat &&
2355 prev->flags == flags &&
2356 !memcmp(prev->scaler_params, param,
2357 sizeof(prev->scaler_params)))) {
2358 return prev;
2359 }
2360
2361 if (!(sws = sws_alloc_context())) {
2362 sws_free_context(&prev);
2363 return NULL;
2364 }
2365
2366 if (prev) {
2367 av_opt_copy(sws, prev);
2368 sws_free_context(&prev);
2369 }
2370
2371 sws->src_w = srcW;
2372 sws->src_h = srcH;
2373 sws->src_format = srcFormat;
2374 sws->dst_w = dstW;
2375 sws->dst_h = dstH;
2376 sws->dst_format = dstFormat;
2377 sws->flags = flags;
2378 for (int i = 0; i < SWS_NUM_SCALER_PARAMS; i++)
2379 sws->scaler_params[i] = param[i];
2380
2381 if (sws_init_context(sws, srcFilter, dstFilter) < 0)
2382 sws_free_context(&sws);
2383
2384 return sws;
2385}
2386
2387int ff_range_add(RangeList *rl, unsigned int start, unsigned int len)
2388{
2389 Range *tmp;
2390 unsigned int idx;
2391
2392 /* find the first existing range after the new one */
2393 for (idx = 0; idx < rl->nb_ranges; idx++)
2394 if (rl->ranges[idx].start > start)
2395 break;
2396
2397 /* check for overlap */
2398 if (idx > 0) {
2399 Range *prev = &rl->ranges[idx - 1];
2400 if (prev->start + prev->len > start)
2401 return AVERROR(EINVAL);
2402 }
2403 if (idx < rl->nb_ranges) {
2404 Range *next = &rl->ranges[idx];
2405 if (start + len > next->start)
2406 return AVERROR(EINVAL);
2407 }
2408
2409 tmp = av_fast_realloc(rl->ranges, &rl->ranges_allocated,
2410 (rl->nb_ranges + 1) * sizeof(*rl->ranges));
2411 if (!tmp)
2412 return AVERROR(ENOMEM);
2413 rl->ranges = tmp;
2414
2415 memmove(rl->ranges + idx + 1, rl->ranges + idx,
2416 sizeof(*rl->ranges) * (rl->nb_ranges - idx));
2417 rl->ranges[idx].start = start;
2418 rl->ranges[idx].len = len;
2419 rl->nb_ranges++;
2420
2421 /* merge ranges */
2422 if (idx > 0) {
2423 Range *prev = &rl->ranges[idx - 1];
2424 Range *cur = &rl->ranges[idx];
2425 if (prev->start + prev->len == cur->start) {
2426 prev->len += cur->len;
2427 memmove(rl->ranges + idx - 1, rl->ranges + idx,
2428 sizeof(*rl->ranges) * (rl->nb_ranges - idx));
2429 rl->nb_ranges--;
2430 idx--;
2431 }
2432 }
2433 if (idx < rl->nb_ranges - 1) {
2434 Range *cur = &rl->ranges[idx];
2435 Range *next = &rl->ranges[idx + 1];
2436 if (cur->start + cur->len == next->start) {
2437 cur->len += next->len;
2438 memmove(rl->ranges + idx, rl->ranges + idx + 1,
2439 sizeof(*rl->ranges) * (rl->nb_ranges - idx - 1));
2440 rl->nb_ranges--;
2441 }
2442 }
2443
2444 return 0;
2445}
2446
2447int ff_sws_thread_exec(void *priv,
2448 int (*func)(void *priv, int jobnr, int threadnr, int nb_jobs, int nb_threads),
2449 int nb_threads, int nb_jobs)
2450{
2451 AVSliceThread *slicethread;
2452 int ret = avpriv_slicethread_create2(&slicethread, priv, func, NULL, nb_threads);
2453 if (ret == AVERROR(ENOSYS)) {
2454 /* Fallback for build configurations without threading */
2455 for (int i = 0; i < nb_jobs; i++) {
2456 int ret = func(priv, i, 0, nb_jobs, 1);
2457 if (ret)
2458 return ret;
2459 }
2460 return 0;
2461 } else if (ret < 0) {
2462 return ret;
2463 }
2464
2465 ret = avpriv_slicethread_execute2(slicethread, nb_jobs, 0);
2466 avpriv_slicethread_free(&slicethread);
2467 return ret;
2468}
format
static const char *const format[]
Definition af_aiir.c:444
float
float
Definition af_crystalizer.c:122
MAX_FILTER_SIZE
#define MAX_FILTER_SIZE
Definition af_dynaudnorm.c:36
ff_sws_alphablendaway
int ff_sws_alphablendaway(SwsInternal *c, const uint8_t *const src[], const int srcStride[], int srcSliceY, int srcSliceH, uint8_t *const dst[], const int dstStride[])
Definition alphablend.c:23
ctx
static AVFormatContext * ctx
Definition api-movenc-test.c:49
A
#define A(x)
Definition vpx_arith.h:28
int32_t
int32_t
Definition audioconvert.c:56
avassert.h
simple assert() macros that are a bit more flexible than ISO C assert().
av_assert2
#define av_assert2(cond)
assert() equivalent, that does lie in speed critical code.
Definition avassert.h:68
av_assert0
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition avassert.h:42
V
#define V
Definition avdct.c:32
left
static int BS_FUNC left(const BSCTX *bc)
Return the number of the bits left in a buffer.
Definition bitstream_template.h:170
flag
#define flag(name)
Definition cbs_h264.c:60
ub
#define ub(width, name)
Definition cbs_h264.c:95
flags
#define flags(name, subs,...)
Definition cbs_h264.c:74
i
#define i(width, name, range_min, range_max)
Definition cbs_h264.c:63
s
#define s(width, name)
Definition cbs_vp9.c:198
saturation
static IPT saturation(const CmsCtx *ctx, IPT ipt)
Definition cms.c:559
AV_CEIL_RSHIFT
#define AV_CEIL_RSHIFT(a, b)
Definition common.h:60
ROUNDED_DIV
#define ROUNDED_DIV(a, b)
Definition common.h:58
FFABS
#define FFABS(a)
Absolute value, Note, INT_MIN / INT64_MIN result in undefined behavior as they are not representable ...
Definition common.h:74
NULL
#define NULL
Definition coverity.c:32
int64_t
long long int64_t
Definition coverity.c:34
csp.h
Colorspace value utility functions for libavutil.
ceil
static __device__ float ceil(float a)
Definition cuda_runtime.h:176
min
#define min(a, b)
Definition cuda_runtime.h:34
max
#define max(a, b)
Definition cuda_runtime.h:33
atomic_init
#define atomic_init(obj, value)
Definition stdatomic.h:33
emms_c
#define emms_c()
Definition emms.h:88
exp
int8_t exp
Definition eval.c:76
ff_sws_graph_free
void ff_sws_graph_free(SwsGraph **pgraph)
Uninitialize any state associate with this filter graph and free it.
Definition graph.c:942
fail
#define fail
Definition test.h:479
AVERROR_UNKNOWN
#define AVERROR_UNKNOWN
Unknown error, typically from an external library.
Definition error.h:73
AVERROR_PATCHWELCOME
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
Definition error.h:64
AVERROR
#define AVERROR(e)
Definition error.h:45
av_frame_free
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition frame.c:64
av_frame_alloc
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
Definition frame.c:52
AV_LOG_DEBUG
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition log.h:231
AV_LOG_WARNING
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition log.h:216
AV_LOG_VERBOSE
#define AV_LOG_VERBOSE
Detailed information.
Definition log.h:226
AV_LOG_INFO
#define AV_LOG_INFO
Standard information.
Definition log.h:221
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition log.h:210
av_fast_realloc
void * av_fast_realloc(void *ptr, unsigned int *size, size_t min_size)
Reallocate the given buffer if it is not large enough, otherwise do nothing.
Definition mem.c:495
av_image_alloc
int av_image_alloc(uint8_t *pointers[4], int linesizes[4], int w, int h, enum AVPixelFormat pix_fmt, int align)
Allocate an image with size w and h and pixel format pix_fmt, and fill pointers and linesizes accordi...
Definition imgutils.c:218
sws_freeFilter
void sws_freeFilter(SwsFilter *filter)
Definition utils.c:2158
SWS_CS_DEFAULT
#define SWS_CS_DEFAULT
Definition swscale.h:464
sws_getColorspaceDetails
int sws_getColorspaceDetails(SwsContext *sws, int **inv_table, int *srcRange, int **table, int *dstRange, int *brightness, int *contrast, int *saturation)
Definition utils.c:1007
sws_init_context
av_cold int sws_init_context(SwsContext *sws, SwsFilter *srcFilter, SwsFilter *dstFilter)
Initialize the swscaler context sws_context.
Definition utils.c:1887
SWS_SRC_V_CHR_DROP_MASK
#define SWS_SRC_V_CHR_DROP_MASK
Definition swscale.h:453
sws_freeVec
void sws_freeVec(SwsVector *a)
Definition utils.c:2149
sws_getDefaultFilter
SwsFilter * sws_getDefaultFilter(float lumaGBlur, float chromaGBlur, float lumaSharpen, float chromaSharpen, float chromaHShift, float chromaVShift, int verbose)
Definition utils.c:2170
sws_isSupportedEndiannessConversion
int sws_isSupportedEndiannessConversion(enum AVPixelFormat pix_fmt)
Definition format.c:299
sws_alloc_context
SwsContext * sws_alloc_context(void)
Allocate an empty SwsContext and set its fields to default values.
Definition utils.c:1032
sws_free_context
void sws_free_context(SwsContext **pctx)
Free the context and everything associated with it, and write NULL to the provided pointer.
Definition utils.c:2324
SWS_SRC_V_CHR_DROP_SHIFT
#define SWS_SRC_V_CHR_DROP_SHIFT
Definition swscale.h:454
sws_allocVec
SwsVector * sws_allocVec(int length)
Allocate and return an uninitialized vector with length coefficients.
Definition utils.c:1959
sws_getGaussianVec
SwsVector * sws_getGaussianVec(double variance, double quality)
Return a normalized Gaussian curve used to filter stuff quality = 3 is high quality,...
Definition utils.c:1976
sws_getCachedContext
SwsContext * sws_getCachedContext(SwsContext *prev, int srcW, int srcH, enum AVPixelFormat srcFormat, int dstW, int dstH, enum AVPixelFormat dstFormat, int flags, SwsFilter *srcFilter, SwsFilter *dstFilter, const double *param)
Check if context can be reused, otherwise reallocate a new one.
Definition utils.c:2334
SwsBackend
SwsBackend
Definition swscale.h:110
sws_normalizeVec
void sws_normalizeVec(SwsVector *a, double height)
Scale all the coefficients of a so that their sum equals height.
Definition utils.c:2050
SWS_MAX_REDUCE_CUTOFF
#define SWS_MAX_REDUCE_CUTOFF
Filter kernel cut-off value.
Definition swscale.h:447
sws_getContext
SwsContext * sws_getContext(int srcW, int srcH, enum AVPixelFormat srcFormat, int dstW, int dstH, enum AVPixelFormat dstFormat, int flags, SwsFilter *srcFilter, SwsFilter *dstFilter, const double *param)
Allocate and return an SwsContext.
Definition utils.c:1922
SWS_PARAM_DEFAULT
#define SWS_PARAM_DEFAULT
Definition swscale.h:456
SwsScaler
SwsScaler
Definition swscale.h:96
sws_freeContext
void sws_freeContext(SwsContext *sws)
Free the swscaler context swsContext.
Definition utils.c:2253
sws_scaleVec
void sws_scaleVec(SwsVector *a, double scalar)
Scale all the coefficients of a by the scalar value.
Definition utils.c:2042
sws_setColorspaceDetails
int sws_setColorspaceDetails(SwsContext *sws, const int inv_table[4], int srcRange, const int table[4], int dstRange, int brightness, int contrast, int saturation)
Definition utils.c:849
SWS_DITHER_ED
@ SWS_DITHER_ED
Definition swscale.h:81
SWS_DITHER_A_DITHER
@ SWS_DITHER_A_DITHER
Definition swscale.h:82
SWS_DITHER_X_DITHER
@ SWS_DITHER_X_DITHER
Definition swscale.h:83
SWS_DITHER_AUTO
@ SWS_DITHER_AUTO
Definition swscale.h:79
SWS_DITHER_BAYER
@ SWS_DITHER_BAYER
Definition swscale.h:80
SWS_DITHER_NONE
@ SWS_DITHER_NONE
Definition swscale.h:78
SWS_ALPHA_BLEND_NONE
@ SWS_ALPHA_BLEND_NONE
Definition swscale.h:89
SWS_BACKEND_UNSTABLE
@ SWS_BACKEND_UNSTABLE
Definition swscale.h:121
SWS_BACKEND_STABLE
@ SWS_BACKEND_STABLE
Definition swscale.h:113
SWS_SCALE_SPLINE
@ SWS_SCALE_SPLINE
unwindowned natural cubic spline
Definition swscale.h:105
SWS_SCALE_POINT
@ SWS_SCALE_POINT
nearest neighbor (point sampling)
Definition swscale.h:100
SWS_SCALE_LANCZOS
@ SWS_SCALE_LANCZOS
3-tap sinc/sinc
Definition swscale.h:104
SWS_SCALE_BILINEAR
@ SWS_SCALE_BILINEAR
bilinear filtering
Definition swscale.h:98
SWS_SCALE_GAUSSIAN
@ SWS_SCALE_GAUSSIAN
2-tap gaussian approximation
Definition swscale.h:102
SWS_SCALE_BICUBIC
@ SWS_SCALE_BICUBIC
2-tap cubic BC-spline
Definition swscale.h:99
SWS_SCALE_AREA
@ SWS_SCALE_AREA
area averaging
Definition swscale.h:101
SWS_SCALE_SINC
@ SWS_SCALE_SINC
unwindowed sinc
Definition swscale.h:103
SWS_SCALE_AUTO
@ SWS_SCALE_AUTO
Definition swscale.h:97
SWS_PRINT_INFO
@ SWS_PRINT_INFO
Emit verbose log of scaling parameters.
Definition swscale.h:141
SWS_SPLINE
@ SWS_SPLINE
unwindowed natural cubic spline
Definition swscale.h:207
SWS_BICUBIC
@ SWS_BICUBIC
2-tap cubic B-spline
Definition swscale.h:199
SWS_BITEXACT
@ SWS_BITEXACT
Definition swscale.h:178
SWS_AREA
@ SWS_AREA
area averaging
Definition swscale.h:202
SWS_BICUBLIN
@ SWS_BICUBLIN
bicubic luma, bilinear chroma
Definition swscale.h:203
SWS_ERROR_DIFFUSION
@ SWS_ERROR_DIFFUSION
Set SwsContext.dither instead.
Definition swscale.h:191
SWS_BILINEAR
@ SWS_BILINEAR
bilinear filtering
Definition swscale.h:198
SWS_UNSTABLE
@ SWS_UNSTABLE
Allow/prefer using experimental new code paths.
Definition swscale.h:185
SWS_FULL_CHR_H_INP
@ SWS_FULL_CHR_H_INP
Perform full chroma interpolation when downscaling RGB sources.
Definition swscale.h:167
SWS_SINC
@ SWS_SINC
unwindowed sinc
Definition swscale.h:205
SWS_LANCZOS
@ SWS_LANCZOS
3-tap sinc/sinc
Definition swscale.h:206
SWS_GAUSS
@ SWS_GAUSS
gaussian approximation
Definition swscale.h:204
SWS_FAST_BILINEAR
@ SWS_FAST_BILINEAR
Scaler selection options.
Definition swscale.h:197
SWS_ACCURATE_RND
@ SWS_ACCURATE_RND
Force bit-exact output.
Definition swscale.h:177
SWS_X
@ SWS_X
experimental
Definition swscale.h:200
SWS_POINT
@ SWS_POINT
nearest neighbor
Definition swscale.h:201
SWS_FULL_CHR_H_INT
@ SWS_FULL_CHR_H_INT
Perform full chroma upsampling when upscaling to RGB.
Definition swscale.h:154
av_opt_set_defaults
void av_opt_set_defaults(void *s)
Set the values of all AVOption fields to their default values.
Definition opt.c:1756
av_opt_copy
int av_opt_copy(void *dst, const void *src)
Copy options from src object into dest object.
Definition opt.c:2217
a
int a
Definition h264pred_template.c:416
B
#define B
Definition huffyuv.h:42
map
const VDPAUPixFmtMap * map
Definition hwcontext_vdpau.c:71
imgutils.h
misc image utilities
b
#define b
Definition input.c:43
av_log2
#define av_log2
Definition intmath.h:84
AV_WL16
#define AV_WL16(p, v)
Definition intreadwrite.h:408
ff_sws_jit_alloc
void * ff_sws_jit_alloc(size_t size)
Definition jit.c:89
ff_sws_jit_free
void ff_sws_jit_free(void *ptr, size_t size)
Definition jit.c:99
ff_sws_jit_protect
int ff_sws_jit_protect(void *ptr, size_t size)
Definition jit.c:94
W
#define W(a, i, v)
Definition jpegls.h:119
ONE
#define ONE
Definition jrevdct.c:137
C
#define C
shift
static int shift(int a, int b)
Definition bonk.c:261
func
int(* func)(AVBPrint *dst, const char *in, const char *arg)
Definition jacosubdec.c:66
from
const char * from
Definition jacosubdec.c:64
to
const char * to
Definition webvttdec.c:36
ff_frame_pool_uninit
av_cold void ff_frame_pool_uninit(FFFramePool *pool)
Deallocate the frame pool.
Definition framepool.c:215
have_neon
#define have_neon(flags)
Definition cpu.h:26
attributes.h
Macro definitions for various function/variable attributes.
av_cold
#define av_cold
Definition attributes.h:117
cpu_flags
static atomic_int cpu_flags
Definition cpu.c:56
av_get_cpu_flags
int av_get_cpu_flags(void)
Return the flags which specify extensions supported by the CPU.
Definition cpu.c:109
AV_CPU_FLAG_SLOW_GATHER
#define AV_CPU_FLAG_SLOW_GATHER
CPU has slow gathers.
Definition cpu.h:62
AV_CPU_FLAG_MMX
#define AV_CPU_FLAG_MMX
standard MMX
Definition cpu.h:32
FF_ALLOC_TYPED_ARRAY
#define FF_ALLOC_TYPED_ARRAY(p, nelem)
Definition internal.h:71
FF_ALLOCZ_TYPED_ARRAY
#define FF_ALLOCZ_TYPED_ARRAY(p, nelem)
Definition internal.h:72
have_lsx
#define have_lsx(flags)
Definition cpu.h:28
have_lasx
#define have_lasx(flags)
Definition cpu.h:29
PPC_ALTIVEC
#define PPC_ALTIVEC(flags)
Definition cpu.h:25
AVOnce
#define AVOnce
Definition thread.h:202
ff_thread_once
static int ff_thread_once(char *control, void(*routine)(void))
Definition thread.h:205
AV_ONCE_INIT
#define AV_ONCE_INIT
Definition thread.h:203
EXTERNAL_AVX2_FAST
#define EXTERNAL_AVX2_FAST(flags)
Definition cpu.h:73
X86_MMX
#define X86_MMX(flags)
Definition cpu.h:25
INLINE_MMXEXT
#define INLINE_MMXEXT(flags)
Definition cpu.h:81
INLINE_MMX
#define INLINE_MMX(flags)
Definition cpu.h:80
libm.h
Replacements for frequently missing libm functions.
isnan
#define isnan(x)
Definition libm.h:342
exp2
#define exp2(x)
Definition libm.h:290
ff_sws_context_class
const AVClass ff_sws_context_class
Definition options.c:124
sws_getConstVec
static SwsVector * sws_getConstVec(double c, int length)
Allocate and return a vector with length coefficients, all with the same value c.
Definition utils.c:2007
handle_0alpha
static int handle_0alpha(int *format)
Definition utils.c:811
handle_xyz
static int handle_xyz(int *format)
Definition utils.c:822
sws_getIdentityVec
static SwsVector * sws_getIdentityVec(void)
Allocate and return a vector with just one coefficient, with value 1.0.
Definition utils.c:2026
alphaless_fmt
static enum AVPixelFormat alphaless_fmt(enum AVPixelFormat fmt)
Definition utils.c:1060
sws_sumVec
static SwsVector * sws_sumVec(SwsVector *a, SwsVector *b)
Definition utils.c:2055
ff_shuffle_filter_coefficients
int ff_shuffle_filter_coefficients(SwsInternal *c, int *filterPos, int filterSize, int16_t *filter, int dstW)
Definition utils.c:97
ff_sws_init_single_context
av_cold int ff_sws_init_single_context(SwsContext *sws, SwsFilter *srcFilter, SwsFilter *dstFilter)
Definition utils.c:1137
alloc_set_opts
static SwsContext * alloc_set_opts(int srcW, int srcH, enum AVPixelFormat srcFormat, int dstW, int dstH, enum AVPixelFormat dstFormat, int flags, const double *param)
Allocate and return an SwsContext without performing initialization.
Definition utils.c:75
alloc_gamma_tbl
static uint16_t * alloc_gamma_tbl(double e)
Definition utils.c:1046
init_xyz_tables
static av_cold void init_xyz_tables(void)
Definition utils.c:714
scale_algorithms
static const ScaleAlgorithm scale_algorithms[]
Definition utils.c:183
context_init_threaded
static int context_init_threaded(SwsContext *sws, SwsFilter *src_filter, SwsFilter *dst_filter)
Definition utils.c:1840
sws_addVec
static void sws_addVec(SwsVector *a, SwsVector *b)
Definition utils.c:2105
handle_formats
static int handle_formats(SwsContext *sws)
Definition utils.c:831
getSplineCoeff
static double getSplineCoeff(double a, double b, double c, double d, double dist)
Definition utils.c:155
initFilter
static av_cold int initFilter(int16_t **outFilter, int32_t **filterPos, int *outFilterSize, int xInc, int srcW, int dstW, int filterAlign, int one, int scaler, int flags, int cpu_flags, SwsVector *srcFilter, SwsVector *dstFilter, double param[SWS_NUM_SCALER_PARAMS], int srcPos, int dstPos)
Definition utils.c:197
ff_sws_enabled_backends
SwsBackend ff_sws_enabled_backends(const SwsContext *ctx)
Definition utils.c:60
xyzgammainv_tab
static uint16_t xyzgammainv_tab[65536]
Definition utils.c:713
ff_sws_thread_exec
int ff_sws_thread_exec(void *priv, int(*func)(void *priv, int jobnr, int threadnr, int nb_jobs, int nb_threads), int nb_threads, int nb_jobs)
Helper for dispatching a single function across multiple threads.
Definition utils.c:2447
xyzgamma_tab
static uint16_t xyzgamma_tab[4096]
Definition utils.c:712
handle_jpeg
static int handle_jpeg(int *format)
Definition utils.c:773
makenan_vec
static void makenan_vec(SwsVector *a)
Definition utils.c:1952
sws_dcVec
static double sws_dcVec(SwsVector *a)
Definition utils.c:2031
isnan_vec
static int isnan_vec(SwsVector *a)
Definition utils.c:1943
sws_shiftVec
static void sws_shiftVec(SwsVector *a, int shift)
Definition utils.c:2091
get_local_pos
static av_cold int get_local_pos(SwsInternal *s, int chr_subsample, int pos, int dir)
Definition utils.c:168
ff_sws_fill_xyztables
av_cold int ff_sws_fill_xyztables(SwsInternal *c)
Definition utils.c:735
rgbgammainv_tab
static uint16_t rgbgammainv_tab[4096]
Definition utils.c:712
scaler_flag
static int scaler_flag(SwsScaler scaler, int fallback)
Definition utils.c:1121
ff_range_add
int ff_range_add(RangeList *rl, unsigned int start, unsigned int len)
Definition utils.c:2387
sws_getShiftedVec
static SwsVector * sws_getShiftedVec(SwsVector *a, int shift)
Definition utils.c:2073
sws_printVec2
static void sws_printVec2(SwsVector *a, AVClass *log_ctx, int log_level)
Print with av_log() a textual representation of the vector a if log_level <= av_log_level.
Definition utils.c:2123
rgbgamma_tab
static uint16_t rgbgamma_tab[65536]
Definition utils.c:713
fill_rgb2yuv_table
static void fill_rgb2yuv_table(SwsInternal *c, const int table[4], int dstRange)
Definition utils.c:614
range_override_needed
static int range_override_needed(enum AVPixelFormat format)
Definition utils.c:844
FFSWAP
#define FFSWAP(type, a, b)
Definition macros.h:52
FFMIN
#define FFMIN(a, b)
Definition macros.h:49
FFMAX
#define FFMAX(a, b)
Definition macros.h:47
FFALIGN
#define FFALIGN(x, a)
Definition macros.h:78
NAN
#define NAN
Definition mathematics.h:115
M_PI
#define M_PI
Definition mathematics.h:67
range
enum AVColorRange range
Definition mediacodec_wrapper.c:2594
av_calloc
void * av_calloc(size_t nmemb, size_t size)
Definition mem.c:264
mem.h
Memory handling functions.
c2
static const uint64_t c2
Definition murmur3.c:53
av_malloc
#define av_malloc(s)
Definition ops_static.c:52
opt.h
AVOptions.
sws_isSupportedOutput
#define sws_isSupportedOutput(x)
sws_isSupportedInput
#define sws_isSupportedInput(x)
av_pix_fmt_get_chroma_sub_sample
int av_pix_fmt_get_chroma_sub_sample(enum AVPixelFormat pix_fmt, int *h_shift, int *v_shift)
Utility function to access log2_chroma_w log2_chroma_h from the pixel format AVPixFmtDescriptor.
Definition pixdesc.c:3488
av_get_bits_per_pixel
int av_get_bits_per_pixel(const AVPixFmtDescriptor *pixdesc)
Return the number of bits per pixel used by the pixel format described by pixdesc.
Definition pixdesc.c:3412
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:3380
av_pix_fmt_swap_endianness
enum AVPixelFormat av_pix_fmt_swap_endianness(enum AVPixelFormat pix_fmt)
Utility function to swap the endianness of a pixel format.
Definition pixdesc.c:3515
av_pix_fmt_desc_get
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition pixdesc.c:3460
AV_PIX_FMT_YUV420P16
#define AV_PIX_FMT_YUV420P16
Definition pixfmt.h:556
AV_PIX_FMT_YUV444P9
#define AV_PIX_FMT_YUV444P9
Definition pixfmt.h:544
AV_PIX_FMT_YUV420P10
#define AV_PIX_FMT_YUV420P10
Definition pixfmt.h:545
AV_PIX_FMT_YUV422P9
#define AV_PIX_FMT_YUV422P9
Definition pixfmt.h:543
AV_PIX_FMT_BGR555
#define AV_PIX_FMT_BGR555
Definition pixfmt.h:538
AV_PIX_FMT_BGR48
#define AV_PIX_FMT_BGR48
Definition pixfmt.h:536
AV_PIX_FMT_GBRP10
#define AV_PIX_FMT_GBRP10
Definition pixfmt.h:564
AV_PIX_FMT_YUV422P10
#define AV_PIX_FMT_YUV422P10
Definition pixfmt.h:546
AV_PIX_FMT_GBRP12
#define AV_PIX_FMT_GBRP12
Definition pixfmt.h:565
AV_PIX_FMT_YUV420P9
#define AV_PIX_FMT_YUV420P9
Definition pixfmt.h:542
AV_PIX_FMT_RGB48
#define AV_PIX_FMT_RGB48
Definition pixfmt.h:531
AV_PIX_FMT_GRAYF32
#define AV_PIX_FMT_GRAYF32
Definition pixfmt.h:588
AVPixelFormat
AVPixelFormat
Pixel format.
Definition pixfmt.h:71
AV_PIX_FMT_GRAY16BE
@ AV_PIX_FMT_GRAY16BE
Y , 16bpp, big-endian.
Definition pixfmt.h:104
AV_PIX_FMT_XYZ12LE
@ AV_PIX_FMT_XYZ12LE
packed XYZ 4:4:4, 36 bpp, (msb) 12X, 12Y, 12Z (lsb), the 2-byte value for each X/Y/Z is stored as lit...
Definition pixfmt.h:196
AV_PIX_FMT_NONE
@ AV_PIX_FMT_NONE
Definition pixfmt.h:72
AV_PIX_FMT_RGB24
@ AV_PIX_FMT_RGB24
packed RGB 8:8:8, 24bpp, RGBRGB...
Definition pixfmt.h:75
AV_PIX_FMT_GRAY10LE
@ AV_PIX_FMT_GRAY10LE
Y , 10bpp, little-endian.
Definition pixfmt.h:321
AV_PIX_FMT_GBRP10BE
@ AV_PIX_FMT_GBRP10BE
planar GBR 4:4:4 30bpp, big-endian
Definition pixfmt.h:169
AV_PIX_FMT_YA16BE
@ AV_PIX_FMT_YA16BE
16 bits gray, 16 bits alpha (big-endian)
Definition pixfmt.h:209
AV_PIX_FMT_YUVA420P9BE
@ AV_PIX_FMT_YUVA420P9BE
planar YUV 4:2:0 22.5bpp, (1 Cr & Cb sample per 2x2 Y & A samples), big-endian
Definition pixfmt.h:175
AV_PIX_FMT_YUV420P
@ AV_PIX_FMT_YUV420P
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition pixfmt.h:73
AV_PIX_FMT_YUV440P
@ AV_PIX_FMT_YUV440P
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
Definition pixfmt.h:106
AV_PIX_FMT_GBRPF16BE
@ AV_PIX_FMT_GBRPF16BE
IEEE-754 half precision planer GBR 4:4:4, 48bpp, big-endian.
Definition pixfmt.h:466
AV_PIX_FMT_GBRPF32BE
@ AV_PIX_FMT_GBRPF32BE
IEEE-754 single precision planar GBR 4:4:4, 96bpp, big-endian.
Definition pixfmt.h:341
AV_PIX_FMT_YUVA444P9LE
@ AV_PIX_FMT_YUVA444P9LE
planar YUV 4:4:4 36bpp, (1 Cr & Cb sample per 1x1 Y & A samples), little-endian
Definition pixfmt.h:180
AV_PIX_FMT_BGR0
@ AV_PIX_FMT_BGR0
packed BGR 8:8:8, 32bpp, BGRXBGRX... X=unused/undefined
Definition pixfmt.h:265
AV_PIX_FMT_YUVA444P10LE
@ AV_PIX_FMT_YUVA444P10LE
planar YUV 4:4:4 40bpp, (1 Cr & Cb sample per 1x1 Y & A samples, little-endian)
Definition pixfmt.h:186
AV_PIX_FMT_GBRP9LE
@ AV_PIX_FMT_GBRP9LE
planar GBR 4:4:4 27bpp, little-endian
Definition pixfmt.h:168
AV_PIX_FMT_GBRP10MSBBE
@ AV_PIX_FMT_GBRP10MSBBE
planar GBR 4:4:4 30bpp, lowest bits zero, big-endian
Definition pixfmt.h:495
AV_PIX_FMT_YUVA420P10BE
@ AV_PIX_FMT_YUVA420P10BE
planar YUV 4:2:0 25bpp, (1 Cr & Cb sample per 2x2 Y & A samples, big-endian)
Definition pixfmt.h:181
AV_PIX_FMT_YUV422P
@ AV_PIX_FMT_YUV422P
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition pixfmt.h:77
AV_PIX_FMT_ARGB
@ AV_PIX_FMT_ARGB
packed ARGB 8:8:8:8, 32bpp, ARGBARGB...
Definition pixfmt.h:99
AV_PIX_FMT_GBRP12BE
@ AV_PIX_FMT_GBRP12BE
planar GBR 4:4:4 36bpp, big-endian
Definition pixfmt.h:279
AV_PIX_FMT_YUVA422P9LE
@ AV_PIX_FMT_YUVA422P9LE
planar YUV 4:2:2 27bpp, (1 Cr & Cb sample per 2x1 Y & A samples), little-endian
Definition pixfmt.h:178
AV_PIX_FMT_GRAY12LE
@ AV_PIX_FMT_GRAY12LE
Y , 12bpp, little-endian.
Definition pixfmt.h:319
AV_PIX_FMT_GBRAP12BE
@ AV_PIX_FMT_GBRAP12BE
planar GBR 4:4:4:4 48bpp, big-endian
Definition pixfmt.h:310
AV_PIX_FMT_BGRA
@ AV_PIX_FMT_BGRA
packed BGRA 8:8:8:8, 32bpp, BGRABGRA...
Definition pixfmt.h:102
AV_PIX_FMT_GRAY12BE
@ AV_PIX_FMT_GRAY12BE
Y , 12bpp, big-endian.
Definition pixfmt.h:318
AV_PIX_FMT_X2BGR10LE
@ AV_PIX_FMT_X2BGR10LE
packed BGR 10:10:10, 30bpp, (msb)2X 10B 10G 10R(lsb), little-endian, X=unused/undefined
Definition pixfmt.h:386
AV_PIX_FMT_GRAY8
@ AV_PIX_FMT_GRAY8
Y , 8bpp.
Definition pixfmt.h:81
AV_PIX_FMT_BGR48BE
@ 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:145
AV_PIX_FMT_YA16LE
@ AV_PIX_FMT_YA16LE
16 bits gray, 16 bits alpha (little-endian)
Definition pixfmt.h:210
AV_PIX_FMT_YUVA420P10LE
@ AV_PIX_FMT_YUVA420P10LE
planar YUV 4:2:0 25bpp, (1 Cr & Cb sample per 2x2 Y & A samples, little-endian)
Definition pixfmt.h:182
AV_PIX_FMT_GRAY14LE
@ AV_PIX_FMT_GRAY14LE
Y , 14bpp, little-endian.
Definition pixfmt.h:361
AV_PIX_FMT_RGB48BE
@ 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:109
AV_PIX_FMT_ABGR
@ AV_PIX_FMT_ABGR
packed ABGR 8:8:8:8, 32bpp, ABGRABGR...
Definition pixfmt.h:101
AV_PIX_FMT_YUVA420P
@ AV_PIX_FMT_YUVA420P
planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples)
Definition pixfmt.h:108
AV_PIX_FMT_YUVA422P10LE
@ AV_PIX_FMT_YUVA422P10LE
planar YUV 4:2:2 30bpp, (1 Cr & Cb sample per 2x1 Y & A samples, little-endian)
Definition pixfmt.h:184
AV_PIX_FMT_GBRPF16LE
@ AV_PIX_FMT_GBRPF16LE
IEEE-754 half precision planer GBR 4:4:4, 48bpp, little-endian.
Definition pixfmt.h:467
AV_PIX_FMT_YUVJ440P
@ AV_PIX_FMT_YUVJ440P
planar YUV 4:4:0 full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV440P and setting color_range
Definition pixfmt.h:107
AV_PIX_FMT_RGBA64BE
@ AV_PIX_FMT_RGBA64BE
packed RGBA 16:16:16:16, 64bpp, 16R, 16G, 16B, 16A, the 2-byte value for each R/G/B/A component is st...
Definition pixfmt.h:202
AV_PIX_FMT_RGB8
@ AV_PIX_FMT_RGB8
packed RGB 3:3:2, 8bpp, (msb)3R 3G 2B(lsb)
Definition pixfmt.h:93
AV_PIX_FMT_GBRAP14BE
@ AV_PIX_FMT_GBRAP14BE
planar GBR 4:4:4:4 56bpp, big-endian
Definition pixfmt.h:432
AV_PIX_FMT_RGBA64LE
@ AV_PIX_FMT_RGBA64LE
packed RGBA 16:16:16:16, 64bpp, 16R, 16G, 16B, 16A, the 2-byte value for each R/G/B/A component is st...
Definition pixfmt.h:203
AV_PIX_FMT_0BGR
@ AV_PIX_FMT_0BGR
packed BGR 8:8:8, 32bpp, XBGRXBGR... X=unused/undefined
Definition pixfmt.h:264
AV_PIX_FMT_YUV411P
@ AV_PIX_FMT_YUV411P
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
Definition pixfmt.h:80
AV_PIX_FMT_GBRAP16BE
@ AV_PIX_FMT_GBRAP16BE
planar GBRA 4:4:4:4 64bpp, big-endian
Definition pixfmt.h:213
AV_PIX_FMT_GBRPF32LE
@ AV_PIX_FMT_GBRPF32LE
IEEE-754 single precision planar GBR 4:4:4, 96bpp, little-endian.
Definition pixfmt.h:342
AV_PIX_FMT_YUVA444P9BE
@ AV_PIX_FMT_YUVA444P9BE
planar YUV 4:4:4 36bpp, (1 Cr & Cb sample per 1x1 Y & A samples), big-endian
Definition pixfmt.h:179
AV_PIX_FMT_BGR8
@ AV_PIX_FMT_BGR8
packed RGB 3:3:2, 8bpp, (msb)2B 3G 3R(lsb)
Definition pixfmt.h:90
AV_PIX_FMT_RGB444LE
@ AV_PIX_FMT_RGB444LE
packed RGB 4:4:4, 16bpp, (msb)4X 4R 4G 4B(lsb), little-endian, X=unused/undefined
Definition pixfmt.h:136
AV_PIX_FMT_GBRP10MSBLE
@ AV_PIX_FMT_GBRP10MSBLE
planar GBR 4:4:4 30bpp, lowest bits zero, little-endian
Definition pixfmt.h:496
AV_PIX_FMT_RGB4_BYTE
@ AV_PIX_FMT_RGB4_BYTE
packed RGB 1:2:1, 8bpp, (msb)1R 2G 1B(lsb)
Definition pixfmt.h:95
AV_PIX_FMT_BGR4_BYTE
@ AV_PIX_FMT_BGR4_BYTE
packed RGB 1:2:1, 8bpp, (msb)1B 2G 1R(lsb)
Definition pixfmt.h:92
AV_PIX_FMT_YUVA420P9LE
@ AV_PIX_FMT_YUVA420P9LE
planar YUV 4:2:0 22.5bpp, (1 Cr & Cb sample per 2x2 Y & A samples), little-endian
Definition pixfmt.h:176
AV_PIX_FMT_RGBA
@ AV_PIX_FMT_RGBA
packed RGBA 8:8:8:8, 32bpp, RGBARGBA...
Definition pixfmt.h:100
AV_PIX_FMT_YUV444P
@ AV_PIX_FMT_YUV444P
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition pixfmt.h:78
AV_PIX_FMT_XYZ12BE
@ AV_PIX_FMT_XYZ12BE
packed XYZ 4:4:4, 36 bpp, (msb) 12X, 12Y, 12Z (lsb), the 2-byte value for each X/Y/Z is stored as big...
Definition pixfmt.h:197
AV_PIX_FMT_YUVA444P
@ AV_PIX_FMT_YUVA444P
planar YUV 4:4:4 32bpp, (1 Cr & Cb sample per 1x1 Y & A samples)
Definition pixfmt.h:174
AV_PIX_FMT_YUVJ411P
@ AV_PIX_FMT_YUVJ411P
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples) full scale (JPEG), deprecated in favor ...
Definition pixfmt.h:283
AV_PIX_FMT_GBRAP
@ AV_PIX_FMT_GBRAP
planar GBRA 4:4:4:4 32bpp
Definition pixfmt.h:212
AV_PIX_FMT_GBRP12LE
@ AV_PIX_FMT_GBRP12LE
planar GBR 4:4:4 36bpp, little-endian
Definition pixfmt.h:280
AV_PIX_FMT_GRAY9BE
@ AV_PIX_FMT_GRAY9BE
Y , 9bpp, big-endian.
Definition pixfmt.h:338
AV_PIX_FMT_YUVA444P16LE
@ AV_PIX_FMT_YUVA444P16LE
planar YUV 4:4:4 64bpp, (1 Cr & Cb sample per 1x1 Y & A samples, little-endian)
Definition pixfmt.h:192
AV_PIX_FMT_YUVA422P10BE
@ AV_PIX_FMT_YUVA422P10BE
planar YUV 4:2:2 30bpp, (1 Cr & Cb sample per 2x1 Y & A samples, big-endian)
Definition pixfmt.h:183
AV_PIX_FMT_YUVA422P16BE
@ AV_PIX_FMT_YUVA422P16BE
planar YUV 4:2:2 48bpp, (1 Cr & Cb sample per 2x1 Y & A samples, big-endian)
Definition pixfmt.h:189
AV_PIX_FMT_BGRA64BE
@ AV_PIX_FMT_BGRA64BE
packed RGBA 16:16:16:16, 64bpp, 16B, 16G, 16R, 16A, the 2-byte value for each R/G/B/A component is st...
Definition pixfmt.h:204
AV_PIX_FMT_GBRP16BE
@ AV_PIX_FMT_GBRP16BE
planar GBR 4:4:4 48bpp, big-endian
Definition pixfmt.h:171
AV_PIX_FMT_GBRAP12LE
@ AV_PIX_FMT_GBRAP12LE
planar GBR 4:4:4:4 48bpp, little-endian
Definition pixfmt.h:311
AV_PIX_FMT_GBRP9BE
@ AV_PIX_FMT_GBRP9BE
planar GBR 4:4:4 27bpp, big-endian
Definition pixfmt.h:167
AV_PIX_FMT_YUVA420P16LE
@ AV_PIX_FMT_YUVA420P16LE
planar YUV 4:2:0 40bpp, (1 Cr & Cb sample per 2x2 Y & A samples, little-endian)
Definition pixfmt.h:188
AV_PIX_FMT_BGR444BE
@ AV_PIX_FMT_BGR444BE
packed BGR 4:4:4, 16bpp, (msb)4X 4B 4G 4R(lsb), big-endian, X=unused/undefined
Definition pixfmt.h:139
AV_PIX_FMT_RGB48LE
@ 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:110
AV_PIX_FMT_GBRAPF32BE
@ AV_PIX_FMT_GBRAPF32BE
IEEE-754 single precision planar GBRA 4:4:4:4, 128bpp, big-endian.
Definition pixfmt.h:343
AV_PIX_FMT_GBRP12MSBLE
@ AV_PIX_FMT_GBRP12MSBLE
planar GBR 4:4:4 36bpp, lowest bits zero, little-endian
Definition pixfmt.h:498
AV_PIX_FMT_BGR444LE
@ AV_PIX_FMT_BGR444LE
packed BGR 4:4:4, 16bpp, (msb)4X 4B 4G 4R(lsb), little-endian, X=unused/undefined
Definition pixfmt.h:138
AV_PIX_FMT_YUVA420P16BE
@ AV_PIX_FMT_YUVA420P16BE
planar YUV 4:2:0 40bpp, (1 Cr & Cb sample per 2x2 Y & A samples, big-endian)
Definition pixfmt.h:187
AV_PIX_FMT_X2RGB10LE
@ AV_PIX_FMT_X2RGB10LE
packed RGB 10:10:10, 30bpp, (msb)2X 10R 10G 10B(lsb), little-endian, X=unused/undefined
Definition pixfmt.h:384
AV_PIX_FMT_YUVJ422P
@ AV_PIX_FMT_YUVJ422P
planar YUV 4:2:2, 16bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV422P and setting col...
Definition pixfmt.h:86
AV_PIX_FMT_GBRAPF32LE
@ AV_PIX_FMT_GBRAPF32LE
IEEE-754 single precision planar GBRA 4:4:4:4, 128bpp, little-endian.
Definition pixfmt.h:344
AV_PIX_FMT_GBRAP14LE
@ AV_PIX_FMT_GBRAP14LE
planar GBR 4:4:4:4 56bpp, little-endian
Definition pixfmt.h:433
AV_PIX_FMT_RGB444BE
@ AV_PIX_FMT_RGB444BE
packed RGB 4:4:4, 16bpp, (msb)4X 4R 4G 4B(lsb), big-endian, X=unused/undefined
Definition pixfmt.h:137
AV_PIX_FMT_BGR48LE
@ 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:146
AV_PIX_FMT_GBRP14LE
@ AV_PIX_FMT_GBRP14LE
planar GBR 4:4:4 42bpp, little-endian
Definition pixfmt.h:282
AV_PIX_FMT_RGB0
@ AV_PIX_FMT_RGB0
packed RGB 8:8:8, 32bpp, RGBXRGBX... X=unused/undefined
Definition pixfmt.h:263
AV_PIX_FMT_GRAY16LE
@ AV_PIX_FMT_GRAY16LE
Y , 16bpp, little-endian.
Definition pixfmt.h:105
AV_PIX_FMT_YUVA422P
@ AV_PIX_FMT_YUVA422P
planar YUV 4:2:2 24bpp, (1 Cr & Cb sample per 2x1 Y & A samples)
Definition pixfmt.h:173
AV_PIX_FMT_GBRP10LE
@ AV_PIX_FMT_GBRP10LE
planar GBR 4:4:4 30bpp, little-endian
Definition pixfmt.h:170
AV_PIX_FMT_GBRAP10BE
@ AV_PIX_FMT_GBRAP10BE
planar GBR 4:4:4:4 40bpp, big-endian
Definition pixfmt.h:313
AV_PIX_FMT_GBRAPF16BE
@ AV_PIX_FMT_GBRAPF16BE
IEEE-754 half precision planar GBRA 4:4:4:4, 64bpp, big-endian.
Definition pixfmt.h:468
AV_PIX_FMT_BGRA64LE
@ AV_PIX_FMT_BGRA64LE
packed RGBA 16:16:16:16, 64bpp, 16B, 16G, 16R, 16A, the 2-byte value for each R/G/B/A component is st...
Definition pixfmt.h:205
AV_PIX_FMT_GBRAP10LE
@ AV_PIX_FMT_GBRAP10LE
planar GBR 4:4:4:4 40bpp, little-endian
Definition pixfmt.h:314
AV_PIX_FMT_PAL8
@ AV_PIX_FMT_PAL8
8 bits with AV_PIX_FMT_RGB32 palette
Definition pixfmt.h:84
AV_PIX_FMT_BGR24
@ AV_PIX_FMT_BGR24
packed RGB 8:8:8, 24bpp, BGRBGR...
Definition pixfmt.h:76
AV_PIX_FMT_GRAY9LE
@ AV_PIX_FMT_GRAY9LE
Y , 9bpp, little-endian.
Definition pixfmt.h:339
AV_PIX_FMT_GBRP
@ AV_PIX_FMT_GBRP
planar GBR 4:4:4 24bpp
Definition pixfmt.h:165
AV_PIX_FMT_GBRAP16LE
@ AV_PIX_FMT_GBRAP16LE
planar GBRA 4:4:4:4 64bpp, little-endian
Definition pixfmt.h:214
AV_PIX_FMT_GBRAPF16LE
@ AV_PIX_FMT_GBRAPF16LE
IEEE-754 half precision planar GBRA 4:4:4:4, 64bpp, little-endian.
Definition pixfmt.h:469
AV_PIX_FMT_GRAY10BE
@ AV_PIX_FMT_GRAY10BE
Y , 10bpp, big-endian.
Definition pixfmt.h:320
AV_PIX_FMT_YUVA444P10BE
@ AV_PIX_FMT_YUVA444P10BE
planar YUV 4:4:4 40bpp, (1 Cr & Cb sample per 1x1 Y & A samples, big-endian)
Definition pixfmt.h:185
AV_PIX_FMT_YA8
@ AV_PIX_FMT_YA8
8 bits gray, 8 bits alpha
Definition pixfmt.h:140
AV_PIX_FMT_0RGB
@ AV_PIX_FMT_0RGB
packed RGB 8:8:8, 32bpp, XRGBXRGB... X=unused/undefined
Definition pixfmt.h:262
AV_PIX_FMT_GRAY14BE
@ AV_PIX_FMT_GRAY14BE
Y , 14bpp, big-endian.
Definition pixfmt.h:360
AV_PIX_FMT_GBRP14BE
@ AV_PIX_FMT_GBRP14BE
planar GBR 4:4:4 42bpp, big-endian
Definition pixfmt.h:281
AV_PIX_FMT_YUVJ444P
@ AV_PIX_FMT_YUVJ444P
planar YUV 4:4:4, 24bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV444P and setting col...
Definition pixfmt.h:87
AV_PIX_FMT_YUVA444P16BE
@ AV_PIX_FMT_YUVA444P16BE
planar YUV 4:4:4 64bpp, (1 Cr & Cb sample per 1x1 Y & A samples, big-endian)
Definition pixfmt.h:191
AV_PIX_FMT_YUVA422P16LE
@ AV_PIX_FMT_YUVA422P16LE
planar YUV 4:2:2 48bpp, (1 Cr & Cb sample per 2x1 Y & A samples, little-endian)
Definition pixfmt.h:190
AV_PIX_FMT_GBRP16LE
@ AV_PIX_FMT_GBRP16LE
planar GBR 4:4:4 48bpp, little-endian
Definition pixfmt.h:172
AV_PIX_FMT_YUVA422P9BE
@ AV_PIX_FMT_YUVA422P9BE
planar YUV 4:2:2 27bpp, (1 Cr & Cb sample per 2x1 Y & A samples), big-endian
Definition pixfmt.h:177
AV_PIX_FMT_RGB4
@ 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:94
AV_PIX_FMT_BGR4
@ 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:91
AV_PIX_FMT_YUVJ420P
@ AV_PIX_FMT_YUVJ420P
planar YUV 4:2:0, 12bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV420P and setting col...
Definition pixfmt.h:85
AV_PIX_FMT_GBRP12MSBBE
@ AV_PIX_FMT_GBRP12MSBBE
planar GBR 4:4:4 36bpp, lowest bits zero, big-endian
Definition pixfmt.h:497
AV_PIX_FMT_BGR565
#define AV_PIX_FMT_BGR565
Definition pixfmt.h:537
AV_PIX_FMT_YUV422P16
#define AV_PIX_FMT_YUV422P16
Definition pixfmt.h:557
AV_PIX_FMT_BGRA64
#define AV_PIX_FMT_BGRA64
Definition pixfmt.h:540
AV_PIX_FMT_GRAY16
#define AV_PIX_FMT_GRAY16
Definition pixfmt.h:528
AV_PIX_FMT_GBRP16
#define AV_PIX_FMT_GBRP16
Definition pixfmt.h:567
AV_PIX_FMT_GBRP14
#define AV_PIX_FMT_GBRP14
Definition pixfmt.h:566
AV_PIX_FMT_YUV444P16
#define AV_PIX_FMT_YUV444P16
Definition pixfmt.h:558
AV_PIX_FMT_YUV444P10
#define AV_PIX_FMT_YUV444P10
Definition pixfmt.h:548
table
static const uint16_t table[]
Definition prosumer.c:203
av_refstruct_unref
void av_refstruct_unref(void *objp)
Decrement the reference count of the underlying object and automatically free the object if there are...
Definition refstruct.c:120
ff_sws_rgb2rgb_init
av_cold void ff_sws_rgb2rgb_init(void)
Definition rgb2rgb.c:127
FF_ARRAY_ELEMS
#define FF_ARRAY_ELEMS(a)
Definition sinewin_tablegen.c:29
ff_free_filters
int ff_free_filters(SwsInternal *c)
Definition slice.c:386
ff_init_filters
int ff_init_filters(SwsInternal *c)
Definition slice.c:246
avpriv_slicethread_free
void avpriv_slicethread_free(AVSliceThread **pctx)
Destroy slice threading context.
Definition slicethread.c:297
avpriv_slicethread_execute2
int avpriv_slicethread_execute2(AVSliceThread *ctx, int nb_jobs, int execute_main)
Execute slice threading.
Definition slicethread.c:292
avpriv_slicethread_create2
int avpriv_slicethread_create2(AVSliceThread **pctx, void *priv, int(*worker_func)(void *priv, int jobnr, int threadnr, int nb_jobs, int nb_threads), int(*main_func)(void *priv), int nb_threads)
Create slice threading context.
Definition slicethread.c:283
AVSliceThread
struct AVSliceThread AVSliceThread
Definition slicethread.h:25
pos
unsigned int pos
Definition spdifenc.c:431
AVClass
Describe the class of an AVClass context structure.
Definition log.h:76
AVComponentDescriptor::depth
int depth
Number of bits in the component.
Definition pixdesc.h:57
AVPixFmtDescriptor
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition pixdesc.h:69
AVPixFmtDescriptor::comp
AVComponentDescriptor comp[4]
Parameters that describe how pixels are packed.
Definition pixdesc.h:105
RangeList::nb_ranges
unsigned int nb_ranges
Definition swscale_internal.h:93
Range::start
AVRational start
Definition vf_pseudocolor.c:118
Range::len
unsigned int len
Definition swscale_internal.h:88
ScaleAlgorithm::flag
int flag
flag associated to the algorithm
Definition utils.c:178
ScaleAlgorithm::size_factor
int size_factor
size factor used when initing the filters
Definition utils.c:180
ScaleAlgorithm::description
const char * description
human-readable description
Definition utils.c:179
SwsContext
Main external API structure.
Definition swscale.h:227
SwsContext::src_h
int src_h
Width and height of the source frame.
Definition swscale.h:272
SwsContext::dst_format
int dst_format
Destination pixel format.
Definition swscale.h:275
SwsContext::gamma_flag
int gamma_flag
Use gamma correct scaling.
Definition swscale.h:264
SwsContext::threads
int threads
How many threads to use for processing, or 0 for automatic selection.
Definition swscale.h:249
SwsContext::scaler
SwsScaler scaler
Scaling filter.
Definition swscale.h:294
SwsContext::dst_h
int dst_h
Width and height of the destination frame.
Definition swscale.h:273
SwsContext::alpha_blend
SwsAlphaBlend alpha_blend
Alpha blending mode.
Definition swscale.h:259
SwsContext::scaler_params
double scaler_params[SWS_NUM_SCALER_PARAMS]
Definition swscale.h:244
SwsContext::dst_w
int dst_w
Definition swscale.h:273
SwsContext::dst_h_chr_pos
int dst_h_chr_pos
Destination horizontal chroma position.
Definition swscale.h:281
SwsContext::scaler_sub
SwsScaler scaler_sub
Scaler used specifically for up/downsampling subsampled (chroma) planes.
Definition swscale.h:302
SwsContext::src_w
int src_w
Deprecated frame property overrides, for the legacy API only.
Definition swscale.h:272
SwsContext::src_format
int src_format
Source pixel format.
Definition swscale.h:274
SwsContext::src_v_chr_pos
int src_v_chr_pos
Source vertical chroma position in luma grid / 256.
Definition swscale.h:278
SwsContext::dst_v_chr_pos
int dst_v_chr_pos
Destination vertical chroma position.
Definition swscale.h:280
SwsContext::dither
SwsDither dither
Dither mode.
Definition swscale.h:254
SwsContext::dst_range
int dst_range
Destination is full range.
Definition swscale.h:277
SwsContext::flags
unsigned flags
Bitmask of SWS_*.
Definition swscale.h:238
SwsContext::src_range
int src_range
Source is full range.
Definition swscale.h:276
SwsContext::src_h_chr_pos
int src_h_chr_pos
Source horizontal chroma position.
Definition swscale.h:279
SwsFilter::chrV
SwsVector * chrV
Definition swscale.h:488
SwsFilter::lumH
SwsVector * lumH
Definition swscale.h:485
SwsFilter::lumV
SwsVector * lumV
Definition swscale.h:486
SwsFilter::chrH
SwsVector * chrH
Definition swscale.h:487
SwsInternal::parent
SwsContext * parent
Definition swscale_internal.h:342
SwsVector::coeff
double * coeff
pointer to the list of coefficients
Definition swscale.h:479
SwsVector::length
int length
number of coefficients in the vector
Definition swscale.h:480
ff_sws_init_scale
void ff_sws_init_scale(SwsInternal *c)
Definition swscale.c:697
ff_sws_slice_worker
int ff_sws_slice_worker(void *priv, int jobnr, int threadnr, int nb_jobs, int nb_threads)
Definition swscale.c:1645
ff_sws_init_range_convert
av_cold void ff_sws_init_range_convert(SwsInternal *c)
Definition swscale.c:626
swscale.h
external API header
SWS_NUM_SCALER_PARAMS
#define SWS_NUM_SCALER_PARAMS
Extra parameters for fine-tuning certain scalers.
Definition swscale.h:243
swscale_internal.h
SWSINTERNAL_ADDITIONAL_ASM_SIZE
#define SWSINTERNAL_ADDITIONAL_ASM_SIZE
Definition swscale_internal.h:47
APCK_SIZE
#define APCK_SIZE
Definition swscale_internal.h:72
isBayer
static av_always_inline int isBayer(enum AVPixelFormat pix_fmt)
Definition swscale_internal.h:861
BU_IDX
#define BU_IDX
Definition swscale_internal.h:473
RV_IDX
#define RV_IDX
Definition swscale_internal.h:474
ff_init_hscaler_mmxext
int ff_init_hscaler_mmxext(int dstW, int xInc, uint8_t *filterCode, int16_t *filter, int32_t *filterPos, int numSplits)
Definition hscale_fast_bilinear_simd.c:30
isFloat
static av_always_inline int isFloat(enum AVPixelFormat pix_fmt)
Definition swscale_internal.h:883
isAnyRGB
static av_always_inline int isAnyRGB(enum AVPixelFormat pix_fmt)
Definition swscale_internal.h:875
RY_IDX
#define RY_IDX
Definition swscale_internal.h:468
BV_IDX
#define BV_IDX
Definition swscale_internal.h:476
is16BPS
static av_always_inline int is16BPS(enum AVPixelFormat pix_fmt)
Definition swscale_internal.h:746
GV_IDX
#define GV_IDX
Definition swscale_internal.h:475
RETCODE_USE_CASCADE
#define RETCODE_USE_CASCADE
Definition swscale_internal.h:75
XYZ_GAMMA
#define XYZ_GAMMA
Definition swscale_internal.h:556
isGray
static av_always_inline int isGray(enum AVPixelFormat pix_fmt)
Definition swscale_internal.h:806
sws_internal
static SwsInternal * sws_internal(const SwsContext *sws)
Definition swscale_internal.h:79
GU_IDX
#define GU_IDX
Definition swscale_internal.h:472
ff_get_unscaled_swscale
void ff_get_unscaled_swscale(SwsInternal *c)
Set c->convert_unscaled to an unscaled converter if one exists for the specific source and destinatio...
Definition swscale_unscaled.c:2392
ff_sws_init_altivec_bufs
int ff_sws_init_altivec_bufs(SwsInternal *c)
BY_IDX
#define BY_IDX
Definition swscale_internal.h:470
RGB_GAMMA
#define RGB_GAMMA
Definition swscale_internal.h:557
ff_sws_free_altivec_bufs
void ff_sws_free_altivec_bufs(SwsInternal *c)
isALPHA
static av_always_inline int isALPHA(enum AVPixelFormat pix_fmt)
Definition swscale_internal.h:897
GY_IDX
#define GY_IDX
Definition swscale_internal.h:469
isPlanarRGB
static av_always_inline int isPlanarRGB(enum AVPixelFormat pix_fmt)
Definition swscale_internal.h:929
ff_yuv2rgb_c_init_tables
int ff_yuv2rgb_c_init_tables(SwsInternal *c, const int inv_table[4], int fullRange, int brightness, int contrast, int saturation)
RU_IDX
#define RU_IDX
Definition swscale_internal.h:471
RGB2YUV_SHIFT
#define RGB2YUV_SHIFT
Definition swscale_internal.h:477
isBayer16BPS
static av_always_inline int isBayer16BPS(enum AVPixelFormat pix_fmt)
Definition swscale_internal.h:868
isNBPS
static av_always_inline int isNBPS(enum AVPixelFormat pix_fmt)
Definition swscale_internal.h:760
ff_yuv2rgb_coeffs
const int32_t ff_yuv2rgb_coeffs[11][4]
Definition yuv2rgb.c:47
isYUV
static av_always_inline int isYUV(enum AVPixelFormat pix_fmt)
Definition swscale_internal.h:774
lrint
#define lrint
Definition tablegen.h:53
av_free
#define av_free(p)
Definition tableprint_vlc.h:34
av_malloc_array
#define av_malloc_array(a, b)
Definition tableprint_vlc.h:32
av_mallocz
#define av_mallocz(s)
Definition tableprint_vlc.h:31
av_freep
#define av_freep(p)
Definition tableprint_vlc.h:35
av_log
#define av_log(a,...)
Definition tableprint_vlc.h:27
error
static void error(const char *err)
Definition target_bsf_fuzzer.c:32
tmp
static uint8_t tmp[40]
Definition aes_ctr.c:52
filter
void(* filter)(uint8_t *src, ptrdiff_t stride, int qscale)
Definition h263dsp.c:29
height
#define height
Definition dsp.h:89
Z
#define Z
Definition uops_tmpl.h:83
coeff
static const double coeff[2][5]
Definition vf_owdenoise.c:80
quality
static const uint8_t quality[]
Definition vmixdec.c:58
len
int len
Definition vorbis_enc_data.h:426
c
static double c[64]
Definition vsrc_mptestsrc.c:89
ff_yuv2rgb_init_tables_ppc
av_cold void ff_yuv2rgb_init_tables_ppc(SwsInternal *c, const int inv_table[4], int brightness, int contrast, int saturation)
Definition yuv2rgb_altivec.c:638
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