FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libswscale/utils.c
Date: 2026-08-15 14:54:27
Exec Total Coverage
Lines: 750 1384 54.2%
Functions: 24 46 52.2%
Branches: 638 1236 51.6%
Line Branch Exec Source
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
60 462297 SwsBackend ff_sws_enabled_backends(const SwsContext *ctx)
61 {
62
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 462297 if (ctx->backends)
63 350097 return ctx->backends;
64
65 112200 SwsBackend fallback = SWS_BACKEND_STABLE;
66
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 112200 if (ctx->flags & SWS_UNSTABLE)
67 ✗ fallback |= SWS_BACKEND_UNSTABLE;
68
69 112200 return fallback;
70 }
71
72 /**
73 * Allocate and return an SwsContext without performing initialization.
74 */
75 5742 static 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 5742 SwsContext *sws = sws_alloc_context();
80
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 5742 if (!sws)
81 ✗ return NULL;
82
83 5742 sws->flags = flags;
84 5742 sws->src_w = srcW;
85 5742 sws->src_h = srcH;
86 5742 sws->dst_w = dstW;
87 5742 sws->dst_h = dstH;
88 5742 sws->src_format = srcFormat;
89 5742 sws->dst_format = dstFormat;
90
91
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 5746 for (int i = 0; param && i < SWS_NUM_SCALER_PARAMS; i++)
92 4 sws->scaler_params[i] = param[i];
93
94 5742 return sws;
95 }
96
97 118882 int 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 118882 int cpu_flags = av_get_cpu_flags();
104
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 118882 if (!filter)
105 ✗ return 0;
106
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 118882 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 118882 return 0;
153 }
154
155 ✗ static 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
168 471496 static av_cold int get_local_pos(SwsInternal *s, int chr_subsample, int pos, int dir)
169 {
170
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 471496 if (pos == -1 || pos <= -513) {
171 210635 pos = (128 << chr_subsample) - 128;
172 }
173 471496 pos += 128; // relative to ideal left edge
174 471496 return pos >> chr_subsample;
175 }
176
177 typedef 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
183 static 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
197 235748 static 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 235748 int64_t *filter = NULL;
209 235748 int64_t *filter2 = NULL;
210 235748 const int64_t fone = 1LL << (54 - FFMIN(av_log2(srcW/dstW), 8));
211 235748 int ret = -1;
212
213 235748 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
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 235748 if (!FF_ALLOC_TYPED_ARRAY(*filterPos, dstW + 3))
217 ✗ goto nomem;
218
219
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 392472 if (FFABS(xInc - 0x10000) < 10 && srcPos == dstPos) { // unscaled
220 int i;
221 156724 filterSize = 1;
222
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 156724 if (!FF_ALLOCZ_TYPED_ARRAY(filter, dstW * filterSize))
223 ✗ goto nomem;
224
225
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 39761707 for (i = 0; i < dstW; i++) {
226 39604983 filter[i * filterSize] = fone;
227 39604983 (*filterPos)[i] = i;
228 }
229
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 79024 } else if (scaler == SWS_POINT) { // lame looking point sampling mode
230 int i;
231 int64_t xDstInSrc;
232 301 filterSize = 1;
233
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 301 if (!FF_ALLOC_TYPED_ARRAY(filter, dstW * filterSize))
234 ✗ goto nomem;
235
236 301 xDstInSrc = ((dstPos*(int64_t)xInc)>>8) - ((srcPos*0x8000LL)>>7);
237
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 87392 for (i = 0; i < dstW; i++) {
238 87091 int xx = (xDstInSrc - ((filterSize - 1) << 15) + (1 << 15)) >> 16;
239
240 87091 (*filterPos)[i] = xx;
241 87091 filter[i] = fone;
242 87091 xDstInSrc += xInc;
243 }
244
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 78723 } else if ((xInc <= (1 << 16) && (scaler == SWS_AREA)) ||
245 90 (scaler == SWS_FAST_BILINEAR)) { // bilinear upscale
246 int i;
247 int64_t xDstInSrc;
248 90 filterSize = 2;
249
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 90 if (!FF_ALLOC_TYPED_ARRAY(filter, dstW * filterSize))
250 ✗ goto nomem;
251
252 90 xDstInSrc = ((dstPos*(int64_t)xInc)>>8) - ((srcPos*0x8000LL)>>7);
253
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 237390 for (i = 0; i < dstW; i++) {
254 237300 int xx = (xDstInSrc - ((filterSize - 1) << 15) + (1 << 15)) >> 16;
255 int j;
256
257 237300 (*filterPos)[i] = xx;
258 // bilinear upscale / linear interpolate / area averaging
259
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 711900 for (j = 0; j < filterSize; j++) {
260 474600 int64_t coeff = fone - FFABS((int64_t)xx * (1 << 16) - xDstInSrc) * (fone >> 16);
261
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 474600 if (coeff < 0)
262 ✗ coeff = 0;
263 474600 filter[i * filterSize + j] = coeff;
264 474600 xx++;
265 }
266 237300 xDstInSrc += xInc;
267 }
268 } else {
269 int64_t xDstInSrc;
270 78633 int sizeFactor = -1;
271
272
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 265998 for (i = 0; i < FF_ARRAY_ELEMS(scale_algorithms); i++) {
273
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 265998 if (scaler == scale_algorithms[i].flag && scale_algorithms[i].size_factor > 0) {
274 78633 sizeFactor = scale_algorithms[i].size_factor;
275 78633 break;
276 }
277 }
278
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 78633 if (scaler == SWS_LANCZOS)
279 ✗ sizeFactor = param[0] != SWS_PARAM_DEFAULT ? ceil(2 * param[0]) : 6;
280
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 78633 av_assert0(sizeFactor > 0);
281
282
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 78633 if (sizeFactor > 50) {
283 ✗ ret = AVERROR(EINVAL);
284 ✗ goto fail;
285 }
286
287
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 78633 if (xInc <= 1 << 16)
288 42306 filterSize = 1 + sizeFactor; // upscale
289 else
290 36327 filterSize = 1 + (sizeFactor * srcW + dstW - 1) / dstW;
291
292
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 78633 filterSize = FFMIN(filterSize, srcW - 2);
293 78633 filterSize = FFMAX(filterSize, 1);
294
295 78633 filter = av_malloc_array(dstW, filterSize * sizeof(*filter));
296
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 78633 if (!filter)
297 ✗ goto nomem;
298 78633 xDstInSrc = ((dstPos*(int64_t)xInc)>>7) - ((srcPos*0x10000LL)>>7);
299
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 13585605 for (i = 0; i < dstW; i++) {
300 13506972 int xx = (xDstInSrc - (filterSize - 2) * (1LL<<16)) / (1 << 17);
301 int j;
302 13506972 (*filterPos)[i] = xx;
303
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 79623156 for (j = 0; j < filterSize; j++) {
304 66116184 int64_t d = (FFABS(((int64_t)xx * (1 << 17)) - xDstInSrc)) << 13;
305 double floatd;
306 int64_t coeff;
307
308
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 66116184 if (xInc > 1 << 16)
309 23938193 d = d * dstW / srcW;
310 66116184 floatd = d * (1.0 / (1 << 30));
311
312
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 66116184 if (scaler == SWS_BICUBIC) {
313
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 47252037 int64_t B = (param[0] != SWS_PARAM_DEFAULT ? param[0] : 0) * (1 << 24);
314
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 47252037 int64_t C = (param[1] != SWS_PARAM_DEFAULT ? param[1] : 0.6) * (1 << 24);
315
316
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 47252037 if (d >= 1LL << 31) {
317 8397115 coeff = 0.0;
318 } else {
319 38854922 int64_t dd = (d * d) >> 30;
320 38854922 int64_t ddd = (dd * d) >> 30;
321
322
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 38854922 if (d < 1LL << 30)
323 19444352 coeff = (12 * (1 << 24) - 9 * B - 6 * C) * ddd +
324 19444352 (-18 * (1 << 24) + 12 * B + 6 * C) * dd +
325 19444352 (6 * (1 << 24) - 2 * B) * (1 << 30);
326 else
327 19410570 coeff = (-B - 6 * C) * ddd +
328 19410570 (6 * B + 30 * C) * dd +
329 19410570 (-12 * B - 48 * C) * d +
330 19410570 (8 * B + 24 * C) * (1 << 30);
331 }
332 47252037 coeff /= (1LL<<54)/fone;
333
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 18864147 } 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
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 18864147 } else if (scaler == SWS_AREA) {
347 288927 int64_t d2 = d - (1 << 29);
348
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 288927 if (d2 * xInc < -(1LL << (29 + 16)))
349 218924 coeff = 1.0 * (1LL << (30 + 16));
350
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 70003 else if (d2 * xInc < (1LL << (29 + 16)))
351 60908 coeff = -d2 * xInc + (1LL << (29 + 16));
352 else
353 9095 coeff = 0.0;
354 288927 coeff *= fone >> (30 + 16);
355
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 18575220 } 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
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 18575220 } else if (scaler == SWS_SINC) {
359 ✗ coeff = (d ? sin(floatd * M_PI) / (floatd * M_PI) : 1.0) * fone;
360
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 18575220 } 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
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 18575220 } else if (scaler == SWS_BILINEAR) {
367 18575220 coeff = (1 << 30) - d;
368
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 18575220 if (coeff < 0)
369 6159680 coeff = 0;
370 18575220 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 66116184 filter[i * filterSize + j] = coeff;
379 66116184 xx++;
380 }
381 13506972 xDstInSrc += 2LL * xInc;
382 }
383 }
384
385 /* apply src & dst Filter to filter -> filter2
386 * av_free(filter);
387 */
388
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 235748 av_assert0(filterSize > 0);
389 235748 filter2Size = filterSize;
390
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 235748 if (srcFilter)
391 ✗ filter2Size += srcFilter->length - 1;
392
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 235748 if (dstFilter)
393 ✗ filter2Size += dstFilter->length - 1;
394
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 235748 av_assert0(filter2Size > 0);
395 235748 filter2 = av_calloc(dstW, filter2Size * sizeof(*filter2));
396
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 235748 if (!filter2)
397 ✗ goto nomem;
398
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 53672094 for (i = 0; i < dstW; i++) {
399 int j, k;
400
401
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 53436346 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
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 159719204 for (j = 0; j < filterSize; j++)
409 106282858 filter2[i * filter2Size + j] = filter[i * filterSize + j];
410 }
411 // FIXME dstFilter
412
413 53436346 (*filterPos)[i] += (filterSize - 1) / 2 - (filter2Size - 1) / 2;
414 }
415 235748 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 235748 minFilterSize = 0;
420
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 53672094 for (i = dstW - 1; i >= 0; i--) {
421 53436346 int min = filter2Size;
422 int j;
423 53436346 int64_t cutOff = 0.0;
424
425 /* get rid of near zero elements on the left by shifting left */
426
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 59649149 for (j = 0; j < filter2Size; j++) {
427 int k;
428 59649149 cutOff += FFABS(filter2[i * filter2Size]);
429
430
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 59649149 if (cutOff > SWS_MAX_REDUCE_CUTOFF * fone)
431 53433525 break;
432
433 /* preserve monotonicity because the core can't handle the
434 * filter otherwise */
435
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 6215624 if (i < dstW - 1 && (*filterPos)[i] >= (*filterPos)[i + 1])
436 2821 break;
437
438 // move filter coefficients left
439
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 28486042 for (k = 1; k < filter2Size; k++)
440 22273239 filter2[i * filter2Size + k - 1] = filter2[i * filter2Size + k];
441 6212803 filter2[i * filter2Size + k - 1] = 0;
442 6212803 (*filterPos)[i]++;
443 }
444
445 53436346 cutOff = 0;
446 /* count near zeros on the right */
447
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 68068428 for (j = filter2Size - 1; j > 0; j--) {
448 28341416 cutOff += FFABS(filter2[i * filter2Size + j]);
449
450
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 28341416 if (cutOff > SWS_MAX_REDUCE_CUTOFF * fone)
451 13709334 break;
452 14632082 min--;
453 }
454
455
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 53436346 if (min > minFilterSize)
456 236456 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
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 235748 if (HAVE_MMX && cpu_flags & AV_CPU_FLAG_MMX || have_neon(cpu_flags)) {
472 // special case for unscaled vertical filtering
473
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 131684 if (minFilterSize == 1 && filterAlign == 2)
474 37720 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
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 235748 av_assert0(minFilterSize > 0);
487 235748 filterSize = (minFilterSize + (filterAlign - 1)) & (~(filterAlign - 1));
488
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 235748 av_assert0(filterSize > 0);
489 235748 filter = av_malloc_array(dstW, filterSize * sizeof(*filter));
490
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 235748 if (!filter)
491 ✗ goto nomem;
492
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 235748 if (filterSize >= MAX_FILTER_SIZE * 16 /
493
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 235748 ((flags & SWS_ACCURATE_RND) ? APCK_SIZE : 16)) {
494 ✗ ret = RETCODE_USE_CASCADE;
495 ✗ goto fail;
496 }
497 235748 *outFilterSize = filterSize;
498
499
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 235748 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
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 53672094 for (i = 0; i < dstW; i++) {
505 int j;
506
507
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 177108461 for (j = 0; j < filterSize; j++) {
508
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 123672115 if (j >= filter2Size)
509 27063074 filter[i * filterSize + j] = 0;
510 else
511 96609041 filter[i * filterSize + j] = filter2[i * filter2Size + j];
512
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 123672115 if ((flags & SWS_BITEXACT) && j >= minFilterSize)
513 25532160 filter[i * filterSize + j] = 0;
514 }
515 }
516
517 // FIXME try to align filterPos if possible
518
519 // fix borders
520
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 53672094 for (i = 0; i < dstW; i++) {
521 int j;
522
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 53436346 if ((*filterPos)[i] < 0) {
523 // move filter coefficients left to compensate for filterPos
524
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 279373 for (j = 1; j < filterSize; j++) {
525 230816 int left = FFMAX(j + (*filterPos)[i], 0);
526 230816 filter[i * filterSize + left] += filter[i * filterSize + j];
527 230816 filter[i * filterSize + j] = 0;
528 }
529 48557 (*filterPos)[i]= 0;
530 }
531
532
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 53436346 if ((*filterPos)[i] + filterSize > srcW) {
533 301723 int shift = (*filterPos)[i] + FFMIN(filterSize - srcW, 0);
534 301723 int64_t acc = 0;
535
536
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 1569088 for (j = filterSize - 1; j >= 0; j--) {
537
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 1267365 if ((*filterPos)[i] + j >= srcW) {
538 522917 acc += filter[i * filterSize + j];
539 522917 filter[i * filterSize + j] = 0;
540 }
541 }
542
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 1569088 for (j = filterSize - 1; j >= 0; j--) {
543
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 1267365 if (j < shift) {
544 522917 filter[i * filterSize + j] = 0;
545 } else {
546 744448 filter[i * filterSize + j] = filter[i * filterSize + j - shift];
547 }
548 }
549
550 301723 (*filterPos)[i]-= shift;
551 301723 filter[i * filterSize + srcW - 1 - (*filterPos)[i]] += acc;
552 }
553
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 53436346 av_assert0((*filterPos)[i] >= 0);
554
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 53436346 av_assert0((*filterPos)[i] < srcW);
555
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 53436346 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 235748 *outFilter = av_calloc(dstW + 3, *outFilterSize * sizeof(**outFilter));
565
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 235748 if (!*outFilter)
566 ✗ goto nomem;
567
568 /* normalize & store in outFilter */
569
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 53672094 for (i = 0; i < dstW; i++) {
570 int j;
571 53436346 int64_t error = 0;
572 53436346 int64_t sum = 0;
573
574
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 177108461 for (j = 0; j < filterSize; j++) {
575 123672115 sum += filter[i * filterSize + j];
576 }
577 53436346 sum = (sum + one / 2) / one;
578
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 53436346 if (!sum) {
579 ✗ av_log(NULL, AV_LOG_WARNING, "SwScaler: zero vector in scaling\n");
580 ✗ sum = 1;
581 }
582
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 177108461 for (j = 0; j < *outFilterSize; j++) {
583 123672115 int64_t v = filter[i * filterSize + j] + error;
584
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 123672115 int intV = ROUNDED_DIV(v, sum);
585 123672115 (*outFilter)[i * (*outFilterSize) + j] = intV;
586 123672115 error = v - intV * sum;
587 }
588 }
589
590 235748 (*filterPos)[dstW + 0] =
591 235748 (*filterPos)[dstW + 1] =
592 235748 (*filterPos)[dstW + 2] = (*filterPos)[dstW - 1]; /* the MMX/SSE scaler will
593 * read over the end */
594
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 837940 for (i = 0; i < *outFilterSize; i++) {
595 602192 int k = (dstW - 1) * (*outFilterSize) + i;
596 602192 (*outFilter)[k + 1 * (*outFilterSize)] =
597 602192 (*outFilter)[k + 2 * (*outFilterSize)] =
598 602192 (*outFilter)[k + 3 * (*outFilterSize)] = (*outFilter)[k];
599 }
600
601 235748 ret = 0;
602 235748 goto done;
603 ✗ nomem:
604 ✗ ret = AVERROR(ENOMEM);
605 ✗ fail:
606 ✗ if(ret < 0)
607 ✗ av_log(NULL, ret == RETCODE_USE_CASCADE ? AV_LOG_DEBUG : AV_LOG_ERROR, "sws: initFilter failed\n");
608 ✗ done:
609 235748 av_free(filter);
610 235748 av_free(filter2);
611 235748 return ret;
612 }
613
614 39756 static void fill_rgb2yuv_table(SwsInternal *c, const int table[4], int dstRange)
615 {
616 int64_t W, V, Z, Cy, Cu, Cv;
617 39756 int64_t vr = table[0];
618 39756 int64_t ub = table[1];
619 39756 int64_t ug = -table[2];
620 39756 int64_t vg = -table[3];
621 39756 int64_t ONE = 65536;
622 39756 int64_t cy = ONE;
623 39756 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 39756 dstRange = 0; //FIXME range = 1 is handled elsewhere
664
665
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 39756 if (!dstRange) {
666 39756 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
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 39756 W = ROUNDED_DIV(ONE*ONE*ug, ub);
674
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 39756 V = ROUNDED_DIV(ONE*ONE*vg, vr);
675 39756 Z = ONE*ONE-W-V;
676
677
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 39756 Cy = ROUNDED_DIV(cy*Z, ONE);
678
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 39756 Cu = ROUNDED_DIV(ub*Z, ONE);
679
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 39756 Cv = ROUNDED_DIV(vr*Z, ONE);
680
681
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 39756 c->input_rgb2yuv_table[RY_IDX] = -ROUNDED_DIV((1 << RGB2YUV_SHIFT)*V , Cy);
682 39756 c->input_rgb2yuv_table[GY_IDX] = ROUNDED_DIV((1 << RGB2YUV_SHIFT)*ONE*ONE , Cy);
683
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 39756 c->input_rgb2yuv_table[BY_IDX] = -ROUNDED_DIV((1 << RGB2YUV_SHIFT)*W , Cy);
684
685
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 39756 c->input_rgb2yuv_table[RU_IDX] = ROUNDED_DIV((1 << RGB2YUV_SHIFT)*V , Cu);
686 39756 c->input_rgb2yuv_table[GU_IDX] = -ROUNDED_DIV((1 << RGB2YUV_SHIFT)*ONE*ONE , Cu);
687
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 39756 c->input_rgb2yuv_table[BU_IDX] = ROUNDED_DIV((1 << RGB2YUV_SHIFT)*(Z+W) , Cu);
688
689
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 39756 c->input_rgb2yuv_table[RV_IDX] = ROUNDED_DIV((1 << RGB2YUV_SHIFT)*(V+Z) , Cv);
690 39756 c->input_rgb2yuv_table[GV_IDX] = -ROUNDED_DIV((1 << RGB2YUV_SHIFT)*ONE*ONE , Cv);
691
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 39756 c->input_rgb2yuv_table[BV_IDX] = ROUNDED_DIV((1 << RGB2YUV_SHIFT)*W , Cv);
692
693
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 39756 if(/*!dstRange && */!memcmp(table, ff_yuv2rgb_coeffs[SWS_CS_DEFAULT], sizeof(ff_yuv2rgb_coeffs[SWS_CS_DEFAULT]))) {
694 39756 c->input_rgb2yuv_table[BY_IDX] = ((int)(0.114 * 219 / 255 * (1 << RGB2YUV_SHIFT) + 0.5));
695 39756 c->input_rgb2yuv_table[BV_IDX] = (-(int)(0.081 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5));
696 39756 c->input_rgb2yuv_table[BU_IDX] = ((int)(0.500 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5));
697 39756 c->input_rgb2yuv_table[GY_IDX] = ((int)(0.587 * 219 / 255 * (1 << RGB2YUV_SHIFT) + 0.5));
698 39756 c->input_rgb2yuv_table[GV_IDX] = (-(int)(0.419 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5));
699 39756 c->input_rgb2yuv_table[GU_IDX] = (-(int)(0.331 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5));
700 39756 c->input_rgb2yuv_table[RY_IDX] = ((int)(0.299 * 219 / 255 * (1 << RGB2YUV_SHIFT) + 0.5));
701 39756 c->input_rgb2yuv_table[RV_IDX] = ((int)(0.500 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5));
702 39756 c->input_rgb2yuv_table[RU_IDX] = (-(int)(0.169 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5));
703 }
704
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 11171436 for(i=0; i<FF_ARRAY_ELEMS(map); i++)
705
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 11131680 AV_WL16(p + 16*4 + 2*i, map[i] >= 0 ? c->input_rgb2yuv_table[map[i]] : 0);
706 39756 }
707
708 #if CONFIG_SMALL
709 static 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
712 static uint16_t xyzgamma_tab[4096], rgbgammainv_tab[4096];
713 static uint16_t rgbgamma_tab[65536], xyzgammainv_tab[65536];
714 38 static av_cold void init_xyz_tables(void)
715 #endif
716 {
717 38 double xyzgamma = XYZ_GAMMA;
718 38 double rgbgamma = 1.0 / RGB_GAMMA;
719 38 double xyzgammainv = 1.0 / XYZ_GAMMA;
720 38 double rgbgammainv = RGB_GAMMA;
721
722 /* set input gamma vectors */
723
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 155686 for (int i = 0; i < 4096; i++) {
724 155648 xyzgamma_tab[i] = lrint(pow(i / 4095.0, xyzgamma) * 65535.0);
725 155648 rgbgammainv_tab[i] = lrint(pow(i / 4095.0, rgbgammainv) * 65535.0);
726 }
727
728 /* set output gamma vectors */
729
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 2490406 for (int i = 0; i < 65536; i++) {
730 2490368 rgbgamma_tab[i] = lrint(pow(i / 65535.0, rgbgamma) * 4095.0);
731 2490368 xyzgammainv_tab[i] = lrint(pow(i / 65535.0, xyzgammainv) * 4095.0);
732 }
733 38 }
734
735 164 av_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
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 164 if (c->xyz2rgb.gamma.in)
747 100 return 0;
748
749 64 memcpy(c->xyz2rgb.mat, xyz2rgb_matrix, sizeof(c->xyz2rgb.mat));
750 64 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 64 c->xyz2rgb.gamma.in = xyzgamma_tab;
763 64 c->xyz2rgb.gamma.out = rgbgamma_tab;
764 64 c->rgb2xyz.gamma.in = rgbgammainv_tab;
765 64 c->rgb2xyz.gamma.out = xyzgammainv_tab;
766
767 static AVOnce xyz_init_static_once = AV_ONCE_INIT;
768 64 ff_thread_once(&xyz_init_static_once, init_xyz_tables);
769 #endif
770 64 return 0;
771 }
772
773 91370 static int handle_jpeg(/* enum AVPixelFormat */ int *format)
774 {
775
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 91370 switch (*format) {
776 99 case AV_PIX_FMT_YUVJ420P:
777 99 *format = AV_PIX_FMT_YUV420P;
778 99 return 1;
779 16 case AV_PIX_FMT_YUVJ411P:
780 16 *format = AV_PIX_FMT_YUV411P;
781 16 return 1;
782 53 case AV_PIX_FMT_YUVJ422P:
783 53 *format = AV_PIX_FMT_YUV422P;
784 53 return 1;
785 356 case AV_PIX_FMT_YUVJ444P:
786 356 *format = AV_PIX_FMT_YUV444P;
787 356 return 1;
788 44 case AV_PIX_FMT_YUVJ440P:
789 44 *format = AV_PIX_FMT_YUV440P;
790 44 return 1;
791 4499 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 4499 return 1;
806 86303 default:
807 86303 return 0;
808 }
809 }
810
811 400908 static int handle_0alpha(/* enum AVPixelFormat */ int *format)
812 {
813
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 400908 switch (*format) {
814 309 case AV_PIX_FMT_0BGR : *format = AV_PIX_FMT_ABGR ; return 1;
815 346 case AV_PIX_FMT_BGR0 : *format = AV_PIX_FMT_BGRA ; return 4;
816 276 case AV_PIX_FMT_0RGB : *format = AV_PIX_FMT_ARGB ; return 1;
817 296 case AV_PIX_FMT_RGB0 : *format = AV_PIX_FMT_RGBA ; return 4;
818 399681 default: return 0;
819 }
820 }
821
822 400908 static int handle_xyz(/* enum AVPixelFormat */ int *format)
823 {
824
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 400908 switch (*format) {
825 14 case AV_PIX_FMT_XYZ12BE : *format = AV_PIX_FMT_RGB48BE; return 1;
826 38 case AV_PIX_FMT_XYZ12LE : *format = AV_PIX_FMT_RGB48LE; return 1;
827 400856 default: return 0;
828 }
829 }
830
831 200454 static int handle_formats(SwsContext *sws)
832 {
833 200454 SwsInternal *c = sws_internal(sws);
834 200454 c->src0Alpha |= handle_0alpha(&sws->src_format);
835 200454 c->dst0Alpha |= handle_0alpha(&sws->dst_format);
836 200454 c->srcXYZ |= handle_xyz(&sws->src_format);
837 200454 c->dstXYZ |= handle_xyz(&sws->dst_format);
838
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 200454 if (c->srcXYZ || c->dstXYZ)
839 150 return ff_sws_fill_xyztables(c);
840 else
841 200304 return 0;
842 }
843
844 342174 static int range_override_needed(enum AVPixelFormat format)
845 {
846
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 342174 return !isYUV(format) && !isGray(format);
847 }
848
849 131578 int 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 131578 SwsInternal *c = sws_internal(sws);
854 const AVPixFmtDescriptor *desc_dst;
855 const AVPixFmtDescriptor *desc_src;
856 131578 int ret, need_reinit = 0;
857
858
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 131578 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 131578 ret = handle_formats(sws);
872
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 131578 if (ret < 0)
873 ✗ return ret;
874 131578 desc_dst = av_pix_fmt_desc_get(sws->dst_format);
875 131578 desc_src = av_pix_fmt_desc_get(sws->src_format);
876
877
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 131578 if(range_override_needed(sws->dst_format))
878 27101 dstRange = 0;
879
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 131578 if(range_override_needed(sws->src_format))
880 54559 srcRange = 0;
881
882
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 131578 if (sws->src_range != srcRange ||
883
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 112564 sws->dst_range != dstRange ||
884
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885
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 110802 c->contrast != contrast ||
886
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887
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 62702 memcmp(c->srcColorspaceTable, inv_table, sizeof(int) * 4) ||
888
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 62541 memcmp(c->dstColorspaceTable, table, sizeof(int) * 4)
889 )
890 69037 need_reinit = 1;
891
892 131578 memmove(c->srcColorspaceTable, inv_table, sizeof(int) * 4);
893 131578 memmove(c->dstColorspaceTable, table, sizeof(int) * 4);
894
895
896
897 131578 c->brightness = brightness;
898 131578 c->contrast = contrast;
899 131578 c->saturation = saturation;
900 131578 sws->src_range = srcRange;
901 131578 sws->dst_range = dstRange;
902
903
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 131578 if (need_reinit)
904 69037 ff_sws_init_range_convert(c);
905
906 131578 c->dstFormatBpp = av_get_bits_per_pixel(desc_dst);
907 131578 c->srcFormatBpp = av_get_bits_per_pixel(desc_src);
908
909
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 131578 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
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 131578 if (!need_reinit)
913 62541 return 0;
914
915
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 69037 if ((isYUV(sws->dst_format) || isGray(sws->dst_format)) && (isYUV(sws->src_format) || isGray(sws->src_format))) {
916
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 29281 if (!c->cascaded_context[0] &&
917
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 29281 memcmp(c->dstColorspaceTable, c->srcColorspaceTable, sizeof(int) * 4) &&
918
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 1 sws->src_w && sws->src_h && sws->dst_w && sws->dst_h) {
919 enum AVPixelFormat tmp_format;
920 int tmp_width, tmp_height;
921 1 int srcW = sws->src_w;
922 1 int srcH = sws->src_h;
923 1 int dstW = sws->dst_w;
924 1 int dstH = sws->dst_h;
925 int ret;
926 1 av_log(c, AV_LOG_VERBOSE, "YUV color matrix differs for YUV->YUV, using intermediate RGB to convert\n");
927
928
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 1 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
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 1 if (isALPHA(sws->src_format) && isALPHA(sws->dst_format)) {
936 ✗ tmp_format = AV_PIX_FMT_BGRA;
937 } else {
938 1 tmp_format = AV_PIX_FMT_BGR24;
939 }
940 }
941
942
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 1 if (srcW*srcH > dstW*dstH) {
943 ✗ tmp_width = dstW;
944 ✗ tmp_height = dstH;
945 } else {
946 1 tmp_width = srcW;
947 1 tmp_height = srcH;
948 }
949
950 1 ret = av_image_alloc(c->cascaded_tmp[0], c->cascaded_tmpStride[0],
951 tmp_width, tmp_height, tmp_format, 64);
952
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 1 if (ret < 0)
953 ✗ return ret;
954
955 2 c->cascaded_context[0] = alloc_set_opts(srcW, srcH, sws->src_format,
956 tmp_width, tmp_height, tmp_format,
957 1 sws->flags, sws->scaler_params);
958
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 1 if (!c->cascaded_context[0])
959 ✗ return -1;
960
961 1 c->cascaded_context[0]->alpha_blend = sws->alpha_blend;
962 1 ret = sws_init_context(c->cascaded_context[0], NULL , NULL);
963
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 1 if (ret < 0)
964 ✗ return ret;
965 //we set both src and dst depending on that the RGB side will be ignored
966 1 sws_setColorspaceDetails(c->cascaded_context[0], inv_table,
967 srcRange, table, dstRange,
968 brightness, contrast, saturation);
969
970 2 c->cascaded_context[1] = alloc_set_opts(tmp_width, tmp_height, tmp_format,
971 1 dstW, dstH, sws->dst_format,
972 1 sws->flags, sws->scaler_params);
973
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 1 if (!c->cascaded_context[1])
974 ✗ return -1;
975 1 c->cascaded_context[1]->src_range = srcRange;
976 1 c->cascaded_context[1]->dst_range = dstRange;
977 1 ret = sws_init_context(c->cascaded_context[1], NULL , NULL);
978
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 1 if (ret < 0)
979 ✗ return ret;
980 1 sws_setColorspaceDetails(c->cascaded_context[1], inv_table,
981 srcRange, table, dstRange,
982 0, 1 << 16, 1 << 16);
983 1 return 0;
984 }
985 //We do not support this combination currently, we need to cascade more contexts to compensate
986
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 29280 if (c->cascaded_context[0] && memcmp(c->dstColorspaceTable, c->srcColorspaceTable, sizeof(int) * 4))
987 ✗ return -1; //AVERROR_PATCHWELCOME;
988 29280 return 0;
989 }
990
991
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 39756 if (!isYUV(sws->dst_format) && !isGray(sws->dst_format)) {
992 16364 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 39756 fill_rgb2yuv_table(c, table, dstRange);
1003
1004 39756 return 0;
1005 }
1006
1007 39509 int sws_getColorspaceDetails(SwsContext *sws, int **inv_table,
1008 int *srcRange, int **table, int *dstRange,
1009 int *brightness, int *contrast, int *saturation)
1010 {
1011 39509 SwsInternal *c = sws_internal(sws);
1012
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1013 ✗ return -1;
1014
1015
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 39509 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 39509 *inv_table = c->srcColorspaceTable;
1022 39509 *table = c->dstColorspaceTable;
1023
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 39509 *srcRange = range_override_needed(sws->src_format) ? 1 : sws->src_range;
1024
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 39509 *dstRange = range_override_needed(sws->dst_format) ? 1 : sws->dst_range;
1025 39509 *brightness = c->brightness;
1026 39509 *contrast = c->contrast;
1027 39509 *saturation = c->saturation;
1028
1029 39509 return 0;
1030 }
1031
1032 89122 SwsContext *sws_alloc_context(void)
1033 {
1034 89122 SwsInternal *c = av_mallocz(sizeof(*c) + SWSINTERNAL_ADDITIONAL_ASM_SIZE);
1035
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 89122 if (!c)
1036 ✗ return NULL;
1037
1038 89122 c->opts.av_class = &ff_sws_context_class;
1039 89122 av_opt_set_defaults(c);
1040 89122 atomic_init(&c->stride_unaligned_warned, 0);
1041 89122 atomic_init(&c->data_unaligned_warned, 0);
1042
1043 89122 return &c->opts;
1044 }
1045
1046 ✗ static 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
1060 1873 static enum AVPixelFormat alphaless_fmt(enum AVPixelFormat fmt)
1061 {
1062
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 1873 switch(fmt) {
1063 12 case AV_PIX_FMT_ARGB: return AV_PIX_FMT_RGB24;
1064 12 case AV_PIX_FMT_RGBA: return AV_PIX_FMT_RGB24;
1065 2 case AV_PIX_FMT_ABGR: return AV_PIX_FMT_BGR24;
1066 220 case AV_PIX_FMT_BGRA: return AV_PIX_FMT_BGR24;
1067 20 case AV_PIX_FMT_YA8: return AV_PIX_FMT_GRAY8;
1068
1069 616 case AV_PIX_FMT_YUVA420P: return AV_PIX_FMT_YUV420P;
1070 3 case AV_PIX_FMT_YUVA422P: return AV_PIX_FMT_YUV422P;
1071 156 case AV_PIX_FMT_YUVA444P: return AV_PIX_FMT_YUV444P;
1072
1073 51 case AV_PIX_FMT_GBRAP: return AV_PIX_FMT_GBRP;
1074
1075 1 case AV_PIX_FMT_GBRAP10LE: return AV_PIX_FMT_GBRP10;
1076 ✗ case AV_PIX_FMT_GBRAP10BE: return AV_PIX_FMT_GBRP10;
1077
1078 1 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 1 case AV_PIX_FMT_GBRAP16LE: return AV_PIX_FMT_GBRP16;
1085 ✗ case AV_PIX_FMT_GBRAP16BE: return AV_PIX_FMT_GBRP16;
1086
1087 1 case AV_PIX_FMT_RGBA64LE: return AV_PIX_FMT_RGB48;
1088 10 case AV_PIX_FMT_RGBA64BE: return AV_PIX_FMT_RGB48;
1089 1 case AV_PIX_FMT_BGRA64LE: return AV_PIX_FMT_BGR48;
1090 ✗ case AV_PIX_FMT_BGRA64BE: return AV_PIX_FMT_BGR48;
1091
1092 10 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 10 case AV_PIX_FMT_YUVA422P16LE: return AV_PIX_FMT_YUV422P16;
1112 4 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 742 default: return AV_PIX_FMT_NONE;
1118 }
1119 }
1120
1121 137752 static int scaler_flag(SwsScaler scaler, int fallback)
1122 {
1123
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 137752 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 137752 default:
1133 137752 return fallback;
1134 }
1135 }
1136
1137 68876 av_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 68876 SwsInternal *c = sws_internal(sws);
1144 68876 SwsFilter dummyFilter = { NULL, NULL, NULL, NULL };
1145 68876 int srcW = sws->src_w;
1146 68876 int srcH = sws->src_h;
1147 68876 int dstW = sws->dst_w;
1148 68876 int dstH = sws->dst_h;
1149 68876 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 68876 int ret = 0;
1155 enum AVPixelFormat tmpFmt;
1156 static const float float_mult = 1.0f / 255.0f;
1157
1158 68876 cpu_flags = av_get_cpu_flags();
1159 68876 flags = sws->flags;
1160 68876 emms_c();
1161
1162
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 68876 unscaled = (srcW == dstW && srcH == dstH);
1163
1164
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 68876 if (!c->contrast && !c->saturation && !c->dstFormatBpp)
1165 68876 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 68876 ret = handle_formats(sws);
1170
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 68876 if (ret < 0)
1171 ✗ return ret;
1172 68876 srcFormat = sws->src_format;
1173 68876 dstFormat = sws->dst_format;
1174 68876 desc_src = av_pix_fmt_desc_get(srcFormat);
1175 68876 desc_dst = av_pix_fmt_desc_get(dstFormat);
1176
1177 // If the source has no alpha then disable alpha blendaway
1178
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 68876 if (c->src0Alpha)
1179 1141 sws->alpha_blend = SWS_ALPHA_BLEND_NONE;
1180
1181
5/6
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 69417 if (!(unscaled && sws_isSupportedEndiannessConversion(srcFormat) &&
1182 541 av_pix_fmt_swap_endianness(srcFormat) == dstFormat)) {
1183
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 68876 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
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 68876 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 68876 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
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 68876 if (!i) {
1210
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 5673 if (dstW < srcW && dstH < srcH)
1211 ✗ i = SWS_BICUBIC;
1212
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 5673 else if (dstW > srcW && dstH > srcH)
1213 ✗ i = SWS_BICUBIC;
1214 else
1215 5673 i = SWS_BICUBIC;
1216 5673 flags |= i;
1217 5673 sws->flags = flags;
1218
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 63203 } 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
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 68876 if (i == SWS_FAST_BILINEAR) {
1225
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 1 if (srcW < 8 || dstW <= 8) {
1226 ✗ i = SWS_BILINEAR;
1227 ✗ flags ^= SWS_FAST_BILINEAR | i;
1228 ✗ sws->flags = flags;
1229 }
1230 }
1231
1232
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 68876 SwsScaler scaler_sub = sws->scaler_sub ? sws->scaler_sub : sws->scaler;
1233
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 68876 int lum_scaler = scaler_flag(sws->scaler, i == SWS_BICUBLIN ? SWS_BICUBIC : i);
1234
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 68876 int chr_scaler = scaler_flag(scaler_sub, i == SWS_BICUBLIN ? SWS_BILINEAR : i);
1235
1236 /* sanity check */
1237
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 68876 if (srcW < 1 || srcH < 1 || dstW < 1 || dstH < 1) {
1238 /* FIXME check if these are enough and try to lower them after
1239 * fixing the relevant parts of the code */
1240 ✗ av_log(c, AV_LOG_ERROR, "%dx%d -> %dx%d is invalid scaling dimension\n",
1241 srcW, srcH, dstW, dstH);
1242 ✗ return AVERROR(EINVAL);
1243 }
1244
1245
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 68876 if (!dstFilter)
1246 68876 dstFilter = &dummyFilter;
1247
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 68876 if (!srcFilter)
1248 68876 srcFilter = &dummyFilter;
1249
1250 68876 int64_t lumXInc = (((int64_t)srcW << 16) + (dstW >> 1)) / dstW;
1251 68876 int64_t lumYInc = (((int64_t)srcH << 16) + (dstH >> 1)) / dstH;
1252 68876 c->dstFormatBpp = av_get_bits_per_pixel(desc_dst);
1253 68876 c->srcFormatBpp = av_get_bits_per_pixel(desc_src);
1254 68876 c->vRounder = 4 * 0x0001000100010001ULL;
1255
1256 ✗ usesVFilter = (srcFilter->lumV && srcFilter->lumV->length > 1) ||
1257
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 68876 (srcFilter->chrV && srcFilter->chrV->length > 1) ||
1258
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 206628 (dstFilter->lumV && dstFilter->lumV->length > 1) ||
1259
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 68876 (dstFilter->chrV && dstFilter->chrV->length > 1);
1260 ✗ usesHFilter = (srcFilter->lumH && srcFilter->lumH->length > 1) ||
1261
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 68876 (srcFilter->chrH && srcFilter->chrH->length > 1) ||
1262
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 206628 (dstFilter->lumH && dstFilter->lumH->length > 1) ||
1263
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 68876 (dstFilter->chrH && dstFilter->chrH->length > 1);
1264
1265 68876 av_pix_fmt_get_chroma_sub_sample(srcFormat, &c->chrSrcHSubSample, &c->chrSrcVSubSample);
1266 68876 av_pix_fmt_get_chroma_sub_sample(dstFormat, &c->chrDstHSubSample, &c->chrDstVSubSample);
1267
1268 68876 c->dst_slice_align = 1 << c->chrDstVSubSample;
1269
1270
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 68876 if (isAnyRGB(dstFormat) && !(flags&SWS_FULL_CHR_H_INT)) {
1271
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 9274 if (dstW&1) {
1272 49 av_log(c, AV_LOG_DEBUG, "Forcing full internal H chroma due to odd output size\n");
1273 49 flags |= SWS_FULL_CHR_H_INT;
1274 49 sws->flags = flags;
1275 }
1276
1277
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 9274 if ( c->chrSrcHSubSample == 0
1278
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 1492 && c->chrSrcVSubSample == 0
1279
1/2
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 1354 && sws->dither != SWS_DITHER_BAYER //SWS_FULL_CHR_H_INT is currently not supported with SWS_DITHER_BAYER
1280
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 1354 && !(sws->flags & SWS_FAST_BILINEAR)
1281 ) {
1282 1354 av_log(c, AV_LOG_DEBUG, "Forcing full internal H chroma due to input having non subsampled chroma\n");
1283 1354 flags |= SWS_FULL_CHR_H_INT;
1284 1354 sws->flags = flags;
1285 }
1286 }
1287
1288
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 68876 if (sws->dither == SWS_DITHER_AUTO) {
1289
1/2
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 57956 if (flags & SWS_ERROR_DIFFUSION)
1290 ✗ sws->dither = SWS_DITHER_ED;
1291 }
1292
1293
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 68876 if(dstFormat == AV_PIX_FMT_BGR4_BYTE ||
1294
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 68759 dstFormat == AV_PIX_FMT_RGB4_BYTE ||
1295
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 68684 dstFormat == AV_PIX_FMT_BGR8 ||
1296 dstFormat == AV_PIX_FMT_RGB8) {
1297
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 253 if (sws->dither == SWS_DITHER_AUTO)
1298
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 253 sws->dither = (flags & SWS_FULL_CHR_H_INT) ? SWS_DITHER_ED : SWS_DITHER_BAYER;
1299
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 253 if (!(flags & SWS_FULL_CHR_H_INT)) {
1300
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 234 if (sws->dither == SWS_DITHER_ED || sws->dither == SWS_DITHER_A_DITHER || sws->dither == SWS_DITHER_X_DITHER || sws->dither == SWS_DITHER_NONE) {
1301 ✗ av_log(c, AV_LOG_DEBUG,
1302 "Desired dithering only supported in full chroma interpolation for destination format '%s'\n",
1303 av_get_pix_fmt_name(dstFormat));
1304 ✗ flags |= SWS_FULL_CHR_H_INT;
1305 ✗ sws->flags = flags;
1306 }
1307 }
1308
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 253 if (flags & SWS_FULL_CHR_H_INT) {
1309
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 19 if (sws->dither == SWS_DITHER_BAYER) {
1310 ✗ av_log(c, AV_LOG_DEBUG,
1311 "Ordered dither is not supported in full chroma interpolation for destination format '%s'\n",
1312 av_get_pix_fmt_name(dstFormat));
1313 ✗ sws->dither = SWS_DITHER_ED;
1314 }
1315 }
1316 }
1317
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 68876 if (isPlanarRGB(dstFormat)) {
1318
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 5190 if (!(flags & SWS_FULL_CHR_H_INT)) {
1319 816 av_log(c, AV_LOG_DEBUG,
1320 "%s output is not supported with half chroma resolution, switching to full\n",
1321 av_get_pix_fmt_name(dstFormat));
1322 816 flags |= SWS_FULL_CHR_H_INT;
1323 816 sws->flags = flags;
1324 }
1325 }
1326
1327 /* reuse chroma for 2 pixels RGB/BGR unless user wants full
1328 * chroma interpolation */
1329
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 78129 if (flags & SWS_FULL_CHR_H_INT &&
1330
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 18506 isAnyRGB(dstFormat) &&
1331
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 13316 !isPlanarRGB(dstFormat) &&
1332
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 4059 dstFormat != AV_PIX_FMT_RGBA64LE &&
1333
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 4056 dstFormat != AV_PIX_FMT_RGBA64BE &&
1334
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 4052 dstFormat != AV_PIX_FMT_BGRA64LE &&
1335
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 4049 dstFormat != AV_PIX_FMT_BGRA64BE &&
1336
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 3293 dstFormat != AV_PIX_FMT_RGB48LE &&
1337
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 3288 dstFormat != AV_PIX_FMT_RGB48BE &&
1338
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 3284 dstFormat != AV_PIX_FMT_BGR48LE &&
1339
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 3281 dstFormat != AV_PIX_FMT_BGR48BE &&
1340
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 3204 dstFormat != AV_PIX_FMT_RGBA &&
1341
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 3186 dstFormat != AV_PIX_FMT_ARGB &&
1342
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 2642 dstFormat != AV_PIX_FMT_BGRA &&
1343
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 2634 dstFormat != AV_PIX_FMT_ABGR &&
1344
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 873 dstFormat != AV_PIX_FMT_RGB24 &&
1345
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 731 dstFormat != AV_PIX_FMT_BGR24 &&
1346
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 727 dstFormat != AV_PIX_FMT_BGR4_BYTE &&
1347
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 723 dstFormat != AV_PIX_FMT_RGB4_BYTE &&
1348
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 717 dstFormat != AV_PIX_FMT_BGR8 &&
1349
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 712 dstFormat != AV_PIX_FMT_RGB8 &&
1350
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 599 dstFormat != AV_PIX_FMT_X2RGB10LE &&
1351 dstFormat != AV_PIX_FMT_X2BGR10LE
1352 ) {
1353 486 av_log(c, AV_LOG_WARNING,
1354 "full chroma interpolation for destination format '%s' not yet implemented\n",
1355 av_get_pix_fmt_name(dstFormat));
1356 486 flags &= ~SWS_FULL_CHR_H_INT;
1357 486 sws->flags = flags;
1358 }
1359
4/4
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 68876 if (isAnyRGB(dstFormat) && !(flags & SWS_FULL_CHR_H_INT))
1360 7586 c->chrDstHSubSample = 1;
1361
1362 // drop some chroma lines if the user wants it
1363 68876 c->vChrDrop = (flags & SWS_SRC_V_CHR_DROP_MASK) >>
1364 SWS_SRC_V_CHR_DROP_SHIFT;
1365 68876 c->chrSrcVSubSample += c->vChrDrop;
1366
1367 /* drop every other pixel for chroma calculation unless user
1368 * wants full chroma */
1369
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 68876 if (isAnyRGB(srcFormat) && !(srcW & 1) && !(flags & SWS_FULL_CHR_H_INP) &&
1370
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 25846 srcFormat != AV_PIX_FMT_RGB8 && srcFormat != AV_PIX_FMT_BGR8 &&
1371
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 25544 srcFormat != AV_PIX_FMT_RGB4 && srcFormat != AV_PIX_FMT_BGR4 &&
1372
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 25245 srcFormat != AV_PIX_FMT_RGB4_BYTE && srcFormat != AV_PIX_FMT_BGR4_BYTE &&
1373
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 24682 srcFormat != AV_PIX_FMT_GBRP9BE && srcFormat != AV_PIX_FMT_GBRP9LE &&
1374
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 23977 srcFormat != AV_PIX_FMT_GBRP10BE && srcFormat != AV_PIX_FMT_GBRP10LE &&
1375
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 22362 srcFormat != AV_PIX_FMT_GBRP10MSBBE && srcFormat != AV_PIX_FMT_GBRP10MSBLE &&
1376
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 21788 srcFormat != AV_PIX_FMT_GBRAP10BE && srcFormat != AV_PIX_FMT_GBRAP10LE &&
1377
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 21127 srcFormat != AV_PIX_FMT_GBRP12BE && srcFormat != AV_PIX_FMT_GBRP12LE &&
1378
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 19485 srcFormat != AV_PIX_FMT_GBRP12MSBBE && srcFormat != AV_PIX_FMT_GBRP12MSBLE &&
1379
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 18937 srcFormat != AV_PIX_FMT_GBRAP12BE && srcFormat != AV_PIX_FMT_GBRAP12LE &&
1380
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 18366 srcFormat != AV_PIX_FMT_GBRAP14BE && srcFormat != AV_PIX_FMT_GBRAP14LE &&
1381
4/4
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 17826 srcFormat != AV_PIX_FMT_GBRP14BE && srcFormat != AV_PIX_FMT_GBRP14LE &&
1382
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 17081 srcFormat != AV_PIX_FMT_GBRP16BE && srcFormat != AV_PIX_FMT_GBRP16LE &&
1383
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 16155 srcFormat != AV_PIX_FMT_GBRAP16BE && srcFormat != AV_PIX_FMT_GBRAP16LE &&
1384
4/4
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 15832 srcFormat != AV_PIX_FMT_GBRPF32BE && srcFormat != AV_PIX_FMT_GBRPF32LE &&
1385
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 15795 srcFormat != AV_PIX_FMT_GBRAPF32BE && srcFormat != AV_PIX_FMT_GBRAPF32LE &&
1386
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 15794 srcFormat != AV_PIX_FMT_GBRPF16BE && srcFormat != AV_PIX_FMT_GBRPF16LE &&
1387
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 15575 srcFormat != AV_PIX_FMT_GBRAPF16BE && srcFormat != AV_PIX_FMT_GBRAPF16LE &&
1388
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 15530 ((dstW >> c->chrDstHSubSample) <= (srcW >> 1) ||
1389
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 14034 (flags & SWS_FAST_BILINEAR)))
1390 1496 c->chrSrcHSubSample = 1;
1391
1392 // Note the AV_CEIL_RSHIFT is so that we always round toward +inf.
1393 68876 c->chrSrcW = AV_CEIL_RSHIFT(srcW, c->chrSrcHSubSample);
1394 68876 c->chrSrcH = AV_CEIL_RSHIFT(srcH, c->chrSrcVSubSample);
1395 68876 c->chrDstW = AV_CEIL_RSHIFT(dstW, c->chrDstHSubSample);
1396 68876 c->chrDstH = AV_CEIL_RSHIFT(dstH, c->chrDstVSubSample);
1397
1398
1/2
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 68876 if (!FF_ALLOCZ_TYPED_ARRAY(c->formatConvBuffer, FFALIGN(srcW * 2 + 78, 16) * 2))
1399 ✗ goto nomem;
1400
1401 68876 c->srcBpc = desc_src->comp[0].depth;
1402
2/2
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 68876 if (c->srcBpc < 8)
1403 5844 c->srcBpc = 8;
1404 68876 c->dstBpc = desc_dst->comp[0].depth;
1405
2/2
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 68876 if (c->dstBpc < 8)
1406 3776 c->dstBpc = 8;
1407
4/4
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 68876 if (isAnyRGB(srcFormat) || srcFormat == AV_PIX_FMT_PAL8)
1408 27317 c->srcBpc = 16;
1409
2/2
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 68876 if (c->dstBpc == 16)
1410 5489 dst_stride <<= 1;
1411
1412
6/6
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 68876 if (INLINE_MMXEXT(cpu_flags) && c->srcBpc == 8 && c->dstBpc <= 14) {
1413
2/2
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 7253 c->canMMXEXTBeUsed = dstW >= srcW && (dstW & 31) == 0 &&
1414
4/4
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 20060 c->chrDstW >= c->chrSrcW &&
1415
1/2
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 4953 (srcW & 15) == 0;
1416
8/8
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 7854 if (!c->canMMXEXTBeUsed && dstW >= srcW && c->chrDstW >= c->chrSrcW && (srcW & 15) == 0
1417
1418
1/2
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 372 && (flags & SWS_FAST_BILINEAR)) {
1419 ✗ if (flags & SWS_PRINT_INFO)
1420 ✗ av_log(c, AV_LOG_INFO,
1421 "output width is not a multiple of 32 -> no MMXEXT scaler\n");
1422 }
1423
4/8
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 7854 if (usesHFilter || isNBPS(sws->src_format) || is16BPS(sws->src_format) || isAnyRGB(sws->src_format))
1424 ✗ c->canMMXEXTBeUsed = 0;
1425 } else
1426 61022 c->canMMXEXTBeUsed = 0;
1427
1428 68876 int64_t chrXInc = (((int64_t)c->chrSrcW << 16) + (c->chrDstW >> 1)) / c->chrDstW;
1429 68876 int64_t chrYInc = (((int64_t)c->chrSrcH << 16) + (c->chrDstH >> 1)) / c->chrDstH;
1430
1431 /* Match pixel 0 of the src to pixel 0 of dst and match pixel n-2 of src
1432 * to pixel n-2 of dst, but only for the FAST_BILINEAR mode otherwise do
1433 * correct scaling.
1434 * n-2 is the last chrominance sample available.
1435 * This is not perfect, but no one should notice the difference, the more
1436 * correct variant would be like the vertical one, but that would require
1437 * some special code for the first and last pixel */
1438
2/2
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 68876 if (flags & SWS_FAST_BILINEAR) {
1439
1/2
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 1 if (c->canMMXEXTBeUsed) {
1440 ✗ lumXInc += 20;
1441 ✗ chrXInc += 20;
1442 }
1443 // we don't use the x86 asm scaler if MMX is available
1444
1/4
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 1 else if (INLINE_MMX(cpu_flags) && c->dstBpc <= 14) {
1445 ✗ lumXInc = ((int64_t)(srcW - 2) << 16) / (dstW - 2) - 20;
1446 ✗ chrXInc = ((int64_t)(c->chrSrcW - 2) << 16) / (c->chrDstW - 2) - 20;
1447 }
1448 }
1449
3/6
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 68876 if (chrXInc < 10 || chrXInc > INT_MAX ||
1450
2/4
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 68876 chrYInc < 10 || chrYInc > INT_MAX ||
1451
2/4
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 68876 lumXInc < 10 || lumXInc > INT_MAX ||
1452
1/2
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 68876 lumYInc < 10 || lumYInc > INT_MAX)
1453 ✗ return AVERROR_PATCHWELCOME;
1454
1455 68876 c->lumXInc = lumXInc;
1456 68876 c->lumYInc = lumYInc;
1457 68876 c->chrXInc = chrXInc;
1458 68876 c->chrYInc = chrYInc;
1459
1460
1461 // hardcoded for now
1462 68876 c->gamma_value = 2.2;
1463 68876 tmpFmt = AV_PIX_FMT_RGBA64LE;
1464
1465
3/8
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 68876 if (!unscaled && sws->gamma_flag && (srcFormat != tmpFmt || dstFormat != tmpFmt)) {
1466 SwsInternal *c2;
1467 ✗ c->cascaded_context[0] = NULL;
1468
1469 ✗ ret = av_image_alloc(c->cascaded_tmp[0], c->cascaded_tmpStride[0],
1470 srcW, srcH, tmpFmt, 64);
1471 ✗ if (ret < 0)
1472 ✗ return ret;
1473
1474 ✗ c->cascaded_context[0] = sws_getContext(srcW, srcH, srcFormat,
1475 srcW, srcH, tmpFmt,
1476 flags, NULL, NULL,
1477 ✗ sws->scaler_params);
1478 ✗ if (!c->cascaded_context[0]) {
1479 ✗ return AVERROR(ENOMEM);
1480 }
1481
1482 ✗ c->cascaded_context[1] = sws_getContext(srcW, srcH, tmpFmt,
1483 dstW, dstH, tmpFmt,
1484 flags, srcFilter, dstFilter,
1485 ✗ sws->scaler_params);
1486
1487 ✗ if (!c->cascaded_context[1])
1488 ✗ return AVERROR(ENOMEM);
1489
1490 ✗ c2 = sws_internal(c->cascaded_context[1]);
1491 ✗ c2->is_internal_gamma = 1;
1492 ✗ c2->gamma = alloc_gamma_tbl( c->gamma_value);
1493 ✗ c2->inv_gamma = alloc_gamma_tbl(1.f/c->gamma_value);
1494 ✗ if (!c2->gamma || !c2->inv_gamma)
1495 ✗ return AVERROR(ENOMEM);
1496
1497 // is_internal_flag is set after creating the context
1498 // to properly create the gamma convert FilterDescriptor
1499 // we have to re-initialize it
1500 ✗ ff_free_filters(c2);
1501 ✗ if ((ret = ff_init_filters(c2)) < 0) {
1502 ✗ sws_freeContext(c->cascaded_context[1]);
1503 ✗ c->cascaded_context[1] = NULL;
1504 ✗ return ret;
1505 }
1506
1507 ✗ c->cascaded_context[2] = NULL;
1508 ✗ if (dstFormat != tmpFmt) {
1509 ✗ ret = av_image_alloc(c->cascaded_tmp[1], c->cascaded_tmpStride[1],
1510 dstW, dstH, tmpFmt, 64);
1511 ✗ if (ret < 0)
1512 ✗ return ret;
1513
1514 ✗ c->cascaded_context[2] = sws_getContext(dstW, dstH, tmpFmt,
1515 dstW, dstH, dstFormat,
1516 flags, NULL, NULL,
1517 ✗ sws->scaler_params);
1518 ✗ if (!c->cascaded_context[2])
1519 ✗ return AVERROR(ENOMEM);
1520 }
1521 ✗ return 0;
1522 }
1523
1524
1/2
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 68876 if (isBayer(srcFormat)) {
1525 ✗ if (!unscaled ||
1526 ✗ (dstFormat != AV_PIX_FMT_RGB24 && dstFormat != AV_PIX_FMT_YUV420P &&
1527 dstFormat != AV_PIX_FMT_RGB48)) {
1528 ✗ enum AVPixelFormat tmpFormat = isBayer16BPS(srcFormat) ? AV_PIX_FMT_RGB48 : AV_PIX_FMT_RGB24;
1529
1530 ✗ ret = av_image_alloc(c->cascaded_tmp[0], c->cascaded_tmpStride[0],
1531 srcW, srcH, tmpFormat, 64);
1532 ✗ if (ret < 0)
1533 ✗ return ret;
1534
1535 ✗ c->cascaded_context[0] = sws_getContext(srcW, srcH, srcFormat,
1536 srcW, srcH, tmpFormat,
1537 flags, srcFilter, NULL,
1538 ✗ sws->scaler_params);
1539 ✗ if (!c->cascaded_context[0])
1540 ✗ return AVERROR(ENOMEM);
1541
1542 ✗ c->cascaded_context[1] = sws_getContext(srcW, srcH, tmpFormat,
1543 dstW, dstH, dstFormat,
1544 flags, NULL, dstFilter,
1545 ✗ sws->scaler_params);
1546 ✗ if (!c->cascaded_context[1])
1547 ✗ return AVERROR(ENOMEM);
1548 ✗ return 0;
1549 }
1550 }
1551
1552
6/6
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 68876 if (unscaled && c->srcBpc == 8 && dstFormat == AV_PIX_FMT_GRAYF32){
1553
2/2
✓ Branch 0 taken 4352 times.
✓ Branch 1 taken 17 times.
 4369 for (i = 0; i < 256; ++i){
1554 4352 c->uint2float_lut[i] = (float)i * float_mult;
1555 }
1556 }
1557
1558 // float will be converted to uint16_t
1559
6/6
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✓ Branch 7 taken 2 times.
 68876 if (isFloat(srcFormat) && !isAnyRGB(srcFormat) &&
1560
5/8
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 28 (!unscaled || unscaled && dstFormat != srcFormat && (srcFormat != AV_PIX_FMT_GRAYF32 ||
1561 dstFormat != AV_PIX_FMT_GRAY8))){
1562 30 c->srcBpc = 16;
1563 }
1564
1565
4/4
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✓ Branch 4 taken 1873 times.
✓ Branch 5 taken 11889 times.
 68876 if (CONFIG_SWSCALE_ALPHA && isALPHA(srcFormat) && !isALPHA(dstFormat)) {
1566 1873 enum AVPixelFormat tmpFormat = alphaless_fmt(srcFormat);
1567
1568
3/4
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 1873 if (tmpFormat != AV_PIX_FMT_NONE && sws->alpha_blend != SWS_ALPHA_BLEND_NONE) {
1569 ✗ if (!unscaled ||
1570 ✗ dstFormat != tmpFormat ||
1571 ✗ usesHFilter || usesVFilter ||
1572 ✗ sws->src_range != sws->dst_range
1573 ) {
1574 ✗ c->cascaded_mainindex = 1;
1575 ✗ ret = av_image_alloc(c->cascaded_tmp[0], c->cascaded_tmpStride[0],
1576 srcW, srcH, tmpFormat, 64);
1577 ✗ if (ret < 0)
1578 ✗ return ret;
1579
1580 ✗ c->cascaded_context[0] = alloc_set_opts(srcW, srcH, srcFormat,
1581 srcW, srcH, tmpFormat,
1582 ✗ flags, sws->scaler_params);
1583 ✗ if (!c->cascaded_context[0])
1584 ✗ return AVERROR(EINVAL);
1585 ✗ c->cascaded_context[0]->alpha_blend = sws->alpha_blend;
1586 ✗ ret = sws_init_context(c->cascaded_context[0], NULL , NULL);
1587 ✗ if (ret < 0)
1588 ✗ return ret;
1589
1590 ✗ c->cascaded_context[1] = alloc_set_opts(srcW, srcH, tmpFormat,
1591 dstW, dstH, dstFormat,
1592 ✗ flags, sws->scaler_params);
1593 ✗ if (!c->cascaded_context[1])
1594 ✗ return AVERROR(EINVAL);
1595
1596 ✗ c->cascaded_context[1]->src_range = sws->src_range;
1597 ✗ c->cascaded_context[1]->dst_range = sws->dst_range;
1598 ✗ ret = sws_init_context(c->cascaded_context[1], srcFilter , dstFilter);
1599 ✗ if (ret < 0)
1600 ✗ return ret;
1601
1602 ✗ return 0;
1603 }
1604 }
1605 }
1606
1607 /* alpha blend special case, note this has been split via cascaded contexts if its scaled */
1608
4/6
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 68876 if (unscaled && !usesHFilter && !usesVFilter &&
1609
1/4
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 49920 sws->alpha_blend != SWS_ALPHA_BLEND_NONE &&
1610 ✗ isALPHA(srcFormat) &&
1611 ✗ (sws->src_range == sws->dst_range || isAnyRGB(dstFormat)) &&
1612 ✗ alphaless_fmt(srcFormat) == dstFormat
1613 ) {
1614 ✗ c->convert_unscaled = ff_sws_alphablendaway;
1615
1616 ✗ if (flags & SWS_PRINT_INFO)
1617 ✗ av_log(c, AV_LOG_INFO,
1618 "using alpha blendaway %s -> %s special converter\n",
1619 av_get_pix_fmt_name(srcFormat), av_get_pix_fmt_name(dstFormat));
1620 ✗ return 0;
1621 }
1622
1623 /* unscaled special cases */
1624
4/6
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 68876 if (unscaled && !usesHFilter && !usesVFilter &&
1625
5/6
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✓ Branch 3 taken 4473 times.
✓ Branch 4 taken 659 times.
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✗ Branch 6 not taken.
 54393 (sws->src_range == sws->dst_range || isAnyRGB(dstFormat) ||
1626
2/4
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✗ Branch 3 not taken.
✗ Branch 5 not taken.
✓ Branch 6 taken 4473 times.
 8946 isFloat(srcFormat) || isFloat(dstFormat) || isBayer(srcFormat))){
1627
1628 45447 ff_get_unscaled_swscale(c);
1629
1630
2/2
✓ Branch 0 taken 9939 times.
✓ Branch 1 taken 35508 times.
 45447 if (c->convert_unscaled) {
1631
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 9939 times.
 9939 if (flags & SWS_PRINT_INFO)
1632 ✗ av_log(c, AV_LOG_INFO,
1633 "using unscaled %s -> %s special converter\n",
1634 av_get_pix_fmt_name(srcFormat), av_get_pix_fmt_name(dstFormat));
1635 9939 return 0;
1636 }
1637 }
1638
1639 /* precalculate horizontal scaler filter coefficients */
1640 {
1641 #if HAVE_MMXEXT_INLINE
1642 // can't downscale !!!
1643
3/4
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✗ Branch 2 not taken.
✓ Branch 3 taken 3703 times.
 58937 if (c->canMMXEXTBeUsed && (flags & SWS_FAST_BILINEAR)) {
1644 ✗ c->lumMmxextFilterCodeSize = ff_init_hscaler_mmxext(dstW, c->lumXInc, NULL,
1645 NULL, NULL, 8);
1646 ✗ c->chrMmxextFilterCodeSize = ff_init_hscaler_mmxext(c->chrDstW, c->chrXInc,
1647 NULL, NULL, NULL, 4);
1648
1649 ✗ c->lumMmxextFilterCode = ff_sws_jit_alloc(c->lumMmxextFilterCodeSize);
1650 ✗ c->chrMmxextFilterCode = ff_sws_jit_alloc(c->chrMmxextFilterCodeSize);
1651 ✗ if (!c->lumMmxextFilterCode || !c->chrMmxextFilterCode) {
1652 ✗ av_log(c, AV_LOG_ERROR, "Failed to allocate MMX2FilterCode\n");
1653 ✗ return AVERROR(ENOMEM);
1654 }
1655
1656 ✗ if (!FF_ALLOCZ_TYPED_ARRAY(c->hLumFilter, dstW / 8 + 8) ||
1657 ✗ !FF_ALLOCZ_TYPED_ARRAY(c->hChrFilter, c->chrDstW / 4 + 8) ||
1658 ✗ !FF_ALLOCZ_TYPED_ARRAY(c->hLumFilterPos, dstW / 2 / 8 + 8) ||
1659 ✗ !FF_ALLOCZ_TYPED_ARRAY(c->hChrFilterPos, c->chrDstW / 2 / 4 + 8))
1660 ✗ goto nomem;
1661
1662 ✗ ff_init_hscaler_mmxext( dstW, c->lumXInc, c->lumMmxextFilterCode,
1663 c->hLumFilter, (uint32_t*)c->hLumFilterPos, 8);
1664 ✗ ff_init_hscaler_mmxext(c->chrDstW, c->chrXInc, c->chrMmxextFilterCode,
1665 c->hChrFilter, (uint32_t*)c->hChrFilterPos, 4);
1666
1667 ✗ if ((ret = ff_sws_jit_protect(c->lumMmxextFilterCode, c->lumMmxextFilterCodeSize)) < 0 ||
1668 ✗ (ret = ff_sws_jit_protect(c->chrMmxextFilterCode, c->chrMmxextFilterCodeSize)) < 0) {
1669 ✗ av_log(c, AV_LOG_ERROR, "mprotect failed, cannot use fast bilinear scaler\n");
1670 ✗ goto fail;
1671 }
1672 } else
1673 #endif /* HAVE_MMXEXT_INLINE */
1674 {
1675
2/2
✓ Branch 0 taken 32921 times.
✓ Branch 1 taken 26016 times.
 58937 const int filterAlign = X86_MMX(cpu_flags) ? 4 :
1676 PPC_ALTIVEC(cpu_flags) ? 8 :
1677 have_neon(cpu_flags) ? 4 :
1678 have_lsx(cpu_flags) ? 8 :
1679 have_lasx(cpu_flags) ? 8 : 1;
1680
1681
1/2
✗ Branch 2 not taken.
✓ Branch 3 taken 58937 times.
 117874 if ((ret = initFilter(&c->hLumFilter, &c->hLumFilterPos,
1682 &c->hLumFilterSize, c->lumXInc,
1683 srcW, dstW, filterAlign, 1 << 14,
1684 lum_scaler, flags,
1685 cpu_flags, srcFilter->lumH, dstFilter->lumH,
1686 58937 sws->scaler_params,
1687 get_local_pos(c, 0, 0, 0),
1688 get_local_pos(c, 0, 0, 0))) < 0)
1689 ✗ goto fail;
1690
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 58937 times.
 58937 if (ff_shuffle_filter_coefficients(c, c->hLumFilterPos, c->hLumFilterSize, c->hLumFilter, dstW) < 0)
1691 ✗ goto nomem;
1692
1/2
✗ Branch 2 not taken.
✓ Branch 3 taken 58937 times.
 117874 if ((ret = initFilter(&c->hChrFilter, &c->hChrFilterPos,
1693 &c->hChrFilterSize, c->chrXInc,
1694 c->chrSrcW, c->chrDstW, filterAlign, 1 << 14,
1695 chr_scaler, flags,
1696 cpu_flags, srcFilter->chrH, dstFilter->chrH,
1697 58937 sws->scaler_params,
1698 get_local_pos(c, c->chrSrcHSubSample, sws->src_h_chr_pos, 0),
1699 get_local_pos(c, c->chrDstHSubSample, sws->dst_h_chr_pos, 0))) < 0)
1700 ✗ goto fail;
1701
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 58937 times.
 58937 if (ff_shuffle_filter_coefficients(c, c->hChrFilterPos, c->hChrFilterSize, c->hChrFilter, c->chrDstW) < 0)
1702 ✗ goto nomem;
1703 }
1704 } // initialize horizontal stuff
1705
1706 /* precalculate vertical scaler filter coefficients */
1707 {
1708
2/2
✓ Branch 0 taken 32921 times.
✓ Branch 1 taken 26016 times.
 58937 const int filterAlign = X86_MMX(cpu_flags) ? 2 :
1709 PPC_ALTIVEC(cpu_flags) ? 8 :
1710 have_neon(cpu_flags) ? 2 : 1;
1711
1712 58937 ret = initFilter(&c->vLumFilter, &c->vLumFilterPos, &c->vLumFilterSize,
1713 c->lumYInc, srcH, dstH, filterAlign, (1 << 12),
1714 lum_scaler, flags,
1715 cpu_flags, srcFilter->lumV, dstFilter->lumV,
1716 58937 sws->scaler_params,
1717 get_local_pos(c, 0, 0, 1),
1718 get_local_pos(c, 0, 0, 1));
1719 58937 int usecascade = (ret == RETCODE_USE_CASCADE);
1720
1/4
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✗ Branch 2 not taken.
✗ Branch 3 not taken.
 58937 if (ret < 0 && !usecascade)
1721 ✗ goto fail;
1722
1/2
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✓ Branch 3 taken 58937 times.
 117874 if ((ret = initFilter(&c->vChrFilter, &c->vChrFilterPos, &c->vChrFilterSize,
1723 c->chrYInc, c->chrSrcH, c->chrDstH,
1724 filterAlign, (1 << 12),
1725 chr_scaler, flags,
1726 cpu_flags, srcFilter->chrV, dstFilter->chrV,
1727 58937 sws->scaler_params,
1728 get_local_pos(c, c->chrSrcVSubSample, sws->src_v_chr_pos, 1),
1729 get_local_pos(c, c->chrDstVSubSample, sws->dst_v_chr_pos, 1))) < 0)
1730
1731 ✗ goto fail;
1732
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 58937 times.
 58937 if (usecascade) {
1733 ✗ ret = RETCODE_USE_CASCADE;
1734 ✗ goto fail;
1735 }
1736
1737 #if HAVE_ALTIVEC
1738 ret = ff_sws_init_altivec_bufs(c);
1739 if (ret < 0)
1740 goto fail;
1741 #endif
1742 }
1743
1744
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 294685 for (i = 0; i < 4; i++)
1745
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 235748 if (!FF_ALLOCZ_TYPED_ARRAY(c->dither_error[i], sws->dst_w + 3))
1746 ✗ goto nomem;
1747
1748
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✓ Branch 5 taken 377 times.
 58937 c->needAlpha = (CONFIG_SWSCALE_ALPHA && isALPHA(sws->src_format) && isALPHA(sws->dst_format)) ? 1 : 0;
1749
1750 // 64 / c->scalingBpp is the same as 16 / sizeof(scaling_intermediate)
1751 58937 c->uv_off = (dst_stride>>1) + 64 / (c->dstBpc &~ 7);
1752 58937 c->uv_offx2 = dst_stride + 16;
1753
1754
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 58937 av_assert0(c->chrDstH <= dstH);
1755
1756
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 58937 if (flags & SWS_PRINT_INFO) {
1757 ✗ const char *scaler = NULL, *cpucaps;
1758
1759 ✗ for (i = 0; i < FF_ARRAY_ELEMS(scale_algorithms); i++) {
1760 ✗ if (flags & scale_algorithms[i].flag) {
1761 ✗ scaler = scale_algorithms[i].description;
1762 ✗ break;
1763 }
1764 }
1765 ✗ if (!scaler)
1766 ✗ scaler = "ehh flags invalid?!";
1767 ✗ av_log(c, AV_LOG_INFO, "%s scaler, from %s to %s%s ",
1768 scaler,
1769 av_get_pix_fmt_name(srcFormat),
1770 ✗ dstFormat == AV_PIX_FMT_BGR555 || dstFormat == AV_PIX_FMT_BGR565 ||
1771 ✗ dstFormat == AV_PIX_FMT_RGB444BE || dstFormat == AV_PIX_FMT_RGB444LE ||
1772 ✗ dstFormat == AV_PIX_FMT_BGR444BE || dstFormat == AV_PIX_FMT_BGR444LE ?
1773 "dithered " : "",
1774 av_get_pix_fmt_name(dstFormat));
1775
1776 ✗ if (INLINE_MMXEXT(cpu_flags))
1777 ✗ cpucaps = "MMXEXT";
1778 ✗ else if (INLINE_MMX(cpu_flags))
1779 ✗ cpucaps = "MMX";
1780 else if (PPC_ALTIVEC(cpu_flags))
1781 cpucaps = "AltiVec";
1782 else
1783 ✗ cpucaps = "C";
1784
1785 ✗ av_log(c, AV_LOG_INFO, "using %s\n", cpucaps);
1786
1787 ✗ av_log(c, AV_LOG_VERBOSE, "%dx%d -> %dx%d\n", srcW, srcH, dstW, dstH);
1788 ✗ av_log(c, AV_LOG_DEBUG,
1789 "lum srcW=%d srcH=%d dstW=%d dstH=%d xInc=%d yInc=%d\n",
1790 sws->src_w, sws->src_h, sws->dst_w, sws->dst_h, c->lumXInc, c->lumYInc);
1791 ✗ av_log(c, AV_LOG_DEBUG,
1792 "chr srcW=%d srcH=%d dstW=%d dstH=%d xInc=%d yInc=%d\n",
1793 c->chrSrcW, c->chrSrcH, c->chrDstW, c->chrDstH,
1794 c->chrXInc, c->chrYInc);
1795 }
1796
1797 58937 ff_sws_init_scale(c);
1798
1799 58937 return ff_init_filters(c);
1800 ✗ nomem:
1801 ✗ ret = AVERROR(ENOMEM);
1802 ✗ fail: // FIXME replace things by appropriate error codes
1803 ✗ if (ret == RETCODE_USE_CASCADE) {
1804 ✗ int tmpW = sqrt(srcW * (int64_t)dstW);
1805 ✗ int tmpH = sqrt(srcH * (int64_t)dstH);
1806 ✗ enum AVPixelFormat tmpFormat = AV_PIX_FMT_YUV420P;
1807
1808 ✗ if (isALPHA(srcFormat))
1809 ✗ tmpFormat = AV_PIX_FMT_YUVA420P;
1810
1811 ✗ if (srcW*(int64_t)srcH <= 4LL*dstW*dstH)
1812 ✗ return AVERROR(EINVAL);
1813
1814 ✗ ret = av_image_alloc(c->cascaded_tmp[0], c->cascaded_tmpStride[0],
1815 tmpW, tmpH, tmpFormat, 64);
1816 ✗ if (ret < 0)
1817 ✗ return ret;
1818
1819 ✗ c->cascaded_context[0] = sws_getContext(srcW, srcH, srcFormat,
1820 tmpW, tmpH, tmpFormat,
1821 flags, srcFilter, NULL,
1822 ✗ sws->scaler_params);
1823 ✗ if (!c->cascaded_context[0])
1824 ✗ return AVERROR(ENOMEM);
1825
1826 ✗ c->cascaded_context[1] = sws_getContext(tmpW, tmpH, tmpFormat,
1827 dstW, dstH, dstFormat,
1828 flags, NULL, dstFilter,
1829 ✗ sws->scaler_params);
1830 ✗ if (!c->cascaded_context[1])
1831 ✗ return AVERROR(ENOMEM);
1832 ✗ return 0;
1833 }
1834 ✗ return ret;
1835 }
1836
1837 ✗ static int context_init_threaded(SwsContext *sws,
1838 SwsFilter *src_filter, SwsFilter *dst_filter)
1839 {
1840 ✗ SwsInternal *c = sws_internal(sws);
1841 int ret;
1842
1843 ✗ ret = avpriv_slicethread_create2(&c->slicethread, (void*) sws,
1844 ff_sws_slice_worker, NULL, sws->threads);
1845 ✗ if (ret == AVERROR(ENOSYS)) {
1846 ✗ sws->threads = 1;
1847 ✗ return 0;
1848 ✗ } else if (ret < 0)
1849 ✗ return ret;
1850
1851 ✗ sws->threads = ret;
1852
1853 ✗ c->slice_ctx = av_calloc(sws->threads, sizeof(*c->slice_ctx));
1854 ✗ if (!c->slice_ctx)
1855 ✗ return AVERROR(ENOMEM);
1856
1857 ✗ for (int i = 0; i < sws->threads; i++) {
1858 SwsContext *slice;
1859 ✗ slice = c->slice_ctx[i] = sws_alloc_context();
1860 ✗ if (!slice)
1861 ✗ return AVERROR(ENOMEM);
1862 ✗ sws_internal(slice)->parent = sws;
1863 ✗ c->nb_slice_ctx++;
1864
1865 ✗ ret = av_opt_copy(slice, sws);
1866 ✗ if (ret < 0)
1867 ✗ return ret;
1868 ✗ slice->threads = 1;
1869
1870 ✗ ret = ff_sws_init_single_context(slice, src_filter, dst_filter);
1871 ✗ if (ret < 0)
1872 ✗ return ret;
1873
1874 ✗ if (slice->dither == SWS_DITHER_ED) {
1875 ✗ av_log(c, AV_LOG_VERBOSE,
1876 "Error-diffusion dither is in use, scaling will be single-threaded.");
1877 ✗ break;
1878 }
1879 }
1880
1881 ✗ return 0;
1882 }
1883
1884 45685 av_cold int sws_init_context(SwsContext *sws, SwsFilter *srcFilter,
1885 SwsFilter *dstFilter)
1886 {
1887 45685 SwsInternal *c = sws_internal(sws);
1888 static AVOnce rgb2rgb_once = AV_ONCE_INIT;
1889 enum AVPixelFormat src_format, dst_format;
1890 int ret;
1891
1892 45685 c->is_legacy_init = 1;
1893 45685 c->frame_src = av_frame_alloc();
1894 45685 c->frame_dst = av_frame_alloc();
1895
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 45685 if (!c->frame_src || !c->frame_dst)
1896 ✗ return AVERROR(ENOMEM);
1897
1898
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 45685 if (ff_thread_once(&rgb2rgb_once, ff_sws_rgb2rgb_init) != 0)
1899 ✗ return AVERROR_UNKNOWN;
1900
1901 45685 src_format = sws->src_format;
1902 45685 dst_format = sws->dst_format;
1903 45685 sws->src_range |= handle_jpeg(&sws->src_format);
1904 45685 sws->dst_range |= handle_jpeg(&sws->dst_format);
1905
1906
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 45685 if (src_format != sws->src_format || dst_format != sws->dst_format)
1907 563 av_log(c, AV_LOG_WARNING, "deprecated pixel format used, make sure you did set range correctly\n");
1908
1909
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 45685 if (sws->threads != 1) {
1910 ✗ ret = context_init_threaded(sws, srcFilter, dstFilter);
1911 ✗ if (ret < 0 || sws->threads > 1)
1912 ✗ return ret;
1913 // threading disabled in this build, init as single-threaded
1914 }
1915
1916 45685 return ff_sws_init_single_context(sws, srcFilter, dstFilter);
1917 }
1918
1919 5740 SwsContext *sws_getContext(int srcW, int srcH, enum AVPixelFormat srcFormat,
1920 int dstW, int dstH, enum AVPixelFormat dstFormat,
1921 int flags, SwsFilter *srcFilter,
1922 SwsFilter *dstFilter, const double *param)
1923 {
1924 SwsContext *sws;
1925
1926 5740 sws = alloc_set_opts(srcW, srcH, srcFormat,
1927 dstW, dstH, dstFormat,
1928 flags, param);
1929
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 5740 if (!sws)
1930 ✗ return NULL;
1931
1932
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 5740 if (sws_init_context(sws, srcFilter, dstFilter) < 0) {
1933 ✗ sws_freeContext(sws);
1934 ✗ return NULL;
1935 }
1936
1937 5740 return sws;
1938 }
1939
1940 ✗ static int isnan_vec(SwsVector *a)
1941 {
1942 int i;
1943 ✗ for (i=0; i<a->length; i++)
1944 ✗ if (isnan(a->coeff[i]))
1945 ✗ return 1;
1946 ✗ return 0;
1947 }
1948
1949 ✗ static void makenan_vec(SwsVector *a)
1950 {
1951 int i;
1952 ✗ for (i=0; i<a->length; i++)
1953 ✗ a->coeff[i] = NAN;
1954 ✗ }
1955
1956 ✗ SwsVector *sws_allocVec(int length)
1957 {
1958 SwsVector *vec;
1959
1960 ✗ if(length <= 0 || length > INT_MAX/ sizeof(double))
1961 ✗ return NULL;
1962
1963 ✗ vec = av_malloc(sizeof(SwsVector));
1964 ✗ if (!vec)
1965 ✗ return NULL;
1966 ✗ vec->length = length;
1967 ✗ vec->coeff = av_malloc(sizeof(double) * length);
1968 ✗ if (!vec->coeff)
1969 ✗ av_freep(&vec);
1970 ✗ return vec;
1971 }
1972
1973 ✗ SwsVector *sws_getGaussianVec(double variance, double quality)
1974 {
1975 ✗ const int length = (int)(variance * quality + 0.5) | 1;
1976 int i;
1977 ✗ double middle = (length - 1) * 0.5;
1978 SwsVector *vec;
1979
1980 ✗ if(variance < 0 || quality < 0)
1981 ✗ return NULL;
1982
1983 ✗ vec = sws_allocVec(length);
1984
1985 ✗ if (!vec)
1986 ✗ return NULL;
1987
1988 ✗ for (i = 0; i < length; i++) {
1989 ✗ double dist = i - middle;
1990 ✗ vec->coeff[i] = exp(-dist * dist / (2 * variance * variance)) /
1991 ✗ sqrt(2 * variance * M_PI);
1992 }
1993
1994 ✗ sws_normalizeVec(vec, 1.0);
1995
1996 ✗ return vec;
1997 }
1998
1999 /**
2000 * Allocate and return a vector with length coefficients, all
2001 * with the same value c.
2002 */
2003 static
2004 ✗ SwsVector *sws_getConstVec(double c, int length)
2005 {
2006 int i;
2007 ✗ SwsVector *vec = sws_allocVec(length);
2008
2009 ✗ if (!vec)
2010 ✗ return NULL;
2011
2012 ✗ for (i = 0; i < length; i++)
2013 ✗ vec->coeff[i] = c;
2014
2015 ✗ return vec;
2016 }
2017
2018 /**
2019 * Allocate and return a vector with just one coefficient, with
2020 * value 1.0.
2021 */
2022 static
2023 ✗ SwsVector *sws_getIdentityVec(void)
2024 {
2025 ✗ return sws_getConstVec(1.0, 1);
2026 }
2027
2028 ✗ static double sws_dcVec(SwsVector *a)
2029 {
2030 int i;
2031 ✗ double sum = 0;
2032
2033 ✗ for (i = 0; i < a->length; i++)
2034 ✗ sum += a->coeff[i];
2035
2036 ✗ return sum;
2037 }
2038
2039 ✗ void sws_scaleVec(SwsVector *a, double scalar)
2040 {
2041 int i;
2042
2043 ✗ for (i = 0; i < a->length; i++)
2044 ✗ a->coeff[i] *= scalar;
2045 ✗ }
2046
2047 ✗ void sws_normalizeVec(SwsVector *a, double height)
2048 {
2049 ✗ sws_scaleVec(a, height / sws_dcVec(a));
2050 ✗ }
2051
2052 ✗ static SwsVector *sws_sumVec(SwsVector *a, SwsVector *b)
2053 {
2054 ✗ int length = FFMAX(a->length, b->length);
2055 int i;
2056 ✗ SwsVector *vec = sws_getConstVec(0.0, length);
2057
2058 ✗ if (!vec)
2059 ✗ return NULL;
2060
2061 ✗ for (i = 0; i < a->length; i++)
2062 ✗ vec->coeff[i + (length - 1) / 2 - (a->length - 1) / 2] += a->coeff[i];
2063 ✗ for (i = 0; i < b->length; i++)
2064 ✗ vec->coeff[i + (length - 1) / 2 - (b->length - 1) / 2] += b->coeff[i];
2065
2066 ✗ return vec;
2067 }
2068
2069 /* shift left / or right if "shift" is negative */
2070 ✗ static SwsVector *sws_getShiftedVec(SwsVector *a, int shift)
2071 {
2072 ✗ int length = a->length + FFABS(shift) * 2;
2073 int i;
2074 ✗ SwsVector *vec = sws_getConstVec(0.0, length);
2075
2076 ✗ if (!vec)
2077 ✗ return NULL;
2078
2079 ✗ for (i = 0; i < a->length; i++) {
2080 ✗ vec->coeff[i + (length - 1) / 2 -
2081 ✗ (a->length - 1) / 2 - shift] = a->coeff[i];
2082 }
2083
2084 ✗ return vec;
2085 }
2086
2087 static
2088 ✗ void sws_shiftVec(SwsVector *a, int shift)
2089 {
2090 ✗ SwsVector *shifted = sws_getShiftedVec(a, shift);
2091 ✗ if (!shifted) {
2092 ✗ makenan_vec(a);
2093 ✗ return;
2094 }
2095 ✗ av_free(a->coeff);
2096 ✗ a->coeff = shifted->coeff;
2097 ✗ a->length = shifted->length;
2098 ✗ av_free(shifted);
2099 }
2100
2101 static
2102 ✗ void sws_addVec(SwsVector *a, SwsVector *b)
2103 {
2104 ✗ SwsVector *sum = sws_sumVec(a, b);
2105 ✗ if (!sum) {
2106 ✗ makenan_vec(a);
2107 ✗ return;
2108 }
2109 ✗ av_free(a->coeff);
2110 ✗ a->coeff = sum->coeff;
2111 ✗ a->length = sum->length;
2112 ✗ av_free(sum);
2113 }
2114
2115 /**
2116 * Print with av_log() a textual representation of the vector a
2117 * if log_level <= av_log_level.
2118 */
2119 static
2120 ✗ void sws_printVec2(SwsVector *a, AVClass *log_ctx, int log_level)
2121 {
2122 int i;
2123 ✗ double max = 0;
2124 ✗ double min = 0;
2125 double range;
2126
2127 ✗ for (i = 0; i < a->length; i++)
2128 ✗ if (a->coeff[i] > max)
2129 ✗ max = a->coeff[i];
2130
2131 ✗ for (i = 0; i < a->length; i++)
2132 ✗ if (a->coeff[i] < min)
2133 ✗ min = a->coeff[i];
2134
2135 ✗ range = max - min;
2136
2137 ✗ for (i = 0; i < a->length; i++) {
2138 ✗ int x = (int)((a->coeff[i] - min) * 60.0 / range + 0.5);
2139 ✗ av_log(log_ctx, log_level, "%1.3f ", a->coeff[i]);
2140 ✗ for (; x > 0; x--)
2141 ✗ av_log(log_ctx, log_level, " ");
2142 ✗ av_log(log_ctx, log_level, "|\n");
2143 }
2144 ✗ }
2145
2146 ✗ void sws_freeVec(SwsVector *a)
2147 {
2148 ✗ if (!a)
2149 ✗ return;
2150 ✗ av_freep(&a->coeff);
2151 ✗ a->length = 0;
2152 ✗ av_free(a);
2153 }
2154
2155 ✗ void sws_freeFilter(SwsFilter *filter)
2156 {
2157 ✗ if (!filter)
2158 ✗ return;
2159
2160 ✗ sws_freeVec(filter->lumH);
2161 ✗ sws_freeVec(filter->lumV);
2162 ✗ sws_freeVec(filter->chrH);
2163 ✗ sws_freeVec(filter->chrV);
2164 ✗ av_free(filter);
2165 }
2166
2167 ✗ SwsFilter *sws_getDefaultFilter(float lumaGBlur, float chromaGBlur,
2168 float lumaSharpen, float chromaSharpen,
2169 float chromaHShift, float chromaVShift,
2170 int verbose)
2171 {
2172 ✗ SwsFilter *filter = av_malloc(sizeof(SwsFilter));
2173 ✗ if (!filter)
2174 ✗ return NULL;
2175
2176 ✗ if (lumaGBlur != 0.0) {
2177 ✗ filter->lumH = sws_getGaussianVec(lumaGBlur, 3.0);
2178 ✗ filter->lumV = sws_getGaussianVec(lumaGBlur, 3.0);
2179 } else {
2180 ✗ filter->lumH = sws_getIdentityVec();
2181 ✗ filter->lumV = sws_getIdentityVec();
2182 }
2183
2184 ✗ if (chromaGBlur != 0.0) {
2185 ✗ filter->chrH = sws_getGaussianVec(chromaGBlur, 3.0);
2186 ✗ filter->chrV = sws_getGaussianVec(chromaGBlur, 3.0);
2187 } else {
2188 ✗ filter->chrH = sws_getIdentityVec();
2189 ✗ filter->chrV = sws_getIdentityVec();
2190 }
2191
2192 ✗ if (!filter->lumH || !filter->lumV || !filter->chrH || !filter->chrV)
2193 ✗ goto fail;
2194
2195 ✗ if (chromaSharpen != 0.0) {
2196 ✗ SwsVector *id = sws_getIdentityVec();
2197 ✗ if (!id)
2198 ✗ goto fail;
2199 ✗ sws_scaleVec(filter->chrH, -chromaSharpen);
2200 ✗ sws_scaleVec(filter->chrV, -chromaSharpen);
2201 ✗ sws_addVec(filter->chrH, id);
2202 ✗ sws_addVec(filter->chrV, id);
2203 ✗ sws_freeVec(id);
2204 }
2205
2206 ✗ if (lumaSharpen != 0.0) {
2207 ✗ SwsVector *id = sws_getIdentityVec();
2208 ✗ if (!id)
2209 ✗ goto fail;
2210 ✗ sws_scaleVec(filter->lumH, -lumaSharpen);
2211 ✗ sws_scaleVec(filter->lumV, -lumaSharpen);
2212 ✗ sws_addVec(filter->lumH, id);
2213 ✗ sws_addVec(filter->lumV, id);
2214 ✗ sws_freeVec(id);
2215 }
2216
2217 ✗ if (chromaHShift != 0.0)
2218 ✗ sws_shiftVec(filter->chrH, (int)(chromaHShift + 0.5));
2219
2220 ✗ if (chromaVShift != 0.0)
2221 ✗ sws_shiftVec(filter->chrV, (int)(chromaVShift + 0.5));
2222
2223 ✗ sws_normalizeVec(filter->chrH, 1.0);
2224 ✗ sws_normalizeVec(filter->chrV, 1.0);
2225 ✗ sws_normalizeVec(filter->lumH, 1.0);
2226 ✗ sws_normalizeVec(filter->lumV, 1.0);
2227
2228 ✗ if (isnan_vec(filter->chrH) ||
2229 ✗ isnan_vec(filter->chrV) ||
2230 ✗ isnan_vec(filter->lumH) ||
2231 ✗ isnan_vec(filter->lumV))
2232 ✗ goto fail;
2233
2234 ✗ if (verbose)
2235 ✗ sws_printVec2(filter->chrH, NULL, AV_LOG_DEBUG);
2236 ✗ if (verbose)
2237 ✗ sws_printVec2(filter->lumH, NULL, AV_LOG_DEBUG);
2238
2239 ✗ return filter;
2240
2241 ✗ fail:
2242 ✗ sws_freeVec(filter->lumH);
2243 ✗ sws_freeVec(filter->lumV);
2244 ✗ sws_freeVec(filter->chrH);
2245 ✗ sws_freeVec(filter->chrV);
2246 ✗ av_freep(&filter);
2247 ✗ return NULL;
2248 }
2249
2250 356489 void sws_freeContext(SwsContext *sws)
2251 {
2252 356489 SwsInternal *c = sws_internal(sws);
2253 int i;
2254
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 356489 if (!c)
2255 267367 return;
2256
2257 89122 av_refstruct_unref(&c->hw_priv);
2258
2259
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 267366 for (i = 0; i < FF_ARRAY_ELEMS(c->graph); i++)
2260 178244 ff_sws_graph_free(&c->graph[i]);
2261 89122 ff_frame_pool_uninit(&c->frame_pool);
2262
2263
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 112313 for (i = 0; i < c->nb_slice_ctx; i++)
2264 23191 sws_freeContext(c->slice_ctx[i]);
2265 89122 av_freep(&c->slice_ctx);
2266
2267 89122 avpriv_slicethread_free(&c->slicethread);
2268
2269
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 445610 for (i = 0; i < 4; i++)
2270 356488 av_freep(&c->dither_error[i]);
2271
2272 89122 av_frame_free(&c->frame_src);
2273 89122 av_frame_free(&c->frame_dst);
2274
2275 89122 av_freep(&c->src_ranges.ranges);
2276
2277 89122 av_freep(&c->vLumFilter);
2278 89122 av_freep(&c->vChrFilter);
2279 89122 av_freep(&c->hLumFilter);
2280 89122 av_freep(&c->hChrFilter);
2281 #if HAVE_ALTIVEC
2282 ff_sws_free_altivec_bufs(c);
2283 #endif
2284
2285 89122 av_freep(&c->vLumFilterPos);
2286 89122 av_freep(&c->vChrFilterPos);
2287 89122 av_freep(&c->hLumFilterPos);
2288 89122 av_freep(&c->hChrFilterPos);
2289
2290 #if HAVE_MMX_INLINE
2291 89122 ff_sws_jit_free(c->lumMmxextFilterCode, c->lumMmxextFilterCodeSize);
2292 89122 ff_sws_jit_free(c->chrMmxextFilterCode, c->chrMmxextFilterCodeSize);
2293 89122 c->lumMmxextFilterCode = NULL;
2294 89122 c->chrMmxextFilterCode = NULL;
2295 #endif /* HAVE_MMX_INLINE */
2296
2297 89122 av_freep(&c->yuvTable);
2298 89122 av_freep(&c->formatConvBuffer);
2299
2300 89122 sws_freeContext(c->cascaded_context[0]);
2301 89122 sws_freeContext(c->cascaded_context[1]);
2302 89122 sws_freeContext(c->cascaded_context[2]);
2303 89122 memset(c->cascaded_context, 0, sizeof(c->cascaded_context));
2304 89122 av_freep(&c->cascaded_tmp[0][0]);
2305 89122 av_freep(&c->cascaded_tmp[1][0]);
2306
2307 89122 av_freep(&c->gamma);
2308 89122 av_freep(&c->inv_gamma);
2309 #if CONFIG_SMALL
2310 av_freep(&c->xyz2rgb.gamma.in);
2311 #endif
2312
2313 89122 av_freep(&c->rgb0_scratch);
2314 89122 av_freep(&c->xyz_scratch);
2315
2316 89122 ff_free_filters(c);
2317
2318 89122 av_free(c);
2319 }
2320
2321 59757 void sws_free_context(SwsContext **pctx)
2322 {
2323 59757 SwsContext *ctx = *pctx;
2324
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 59757 if (!ctx)
2325 ✗ return;
2326
2327 59757 sws_freeContext(ctx);
2328 59757 *pctx = NULL;
2329 }
2330
2331 ✗ SwsContext *sws_getCachedContext(SwsContext *prev, int srcW,
2332 int srcH, enum AVPixelFormat srcFormat,
2333 int dstW, int dstH,
2334 enum AVPixelFormat dstFormat, int flags,
2335 SwsFilter *srcFilter,
2336 SwsFilter *dstFilter,
2337 const double *param)
2338 {
2339 SwsContext *sws;
2340 static const double default_param[2] = { SWS_PARAM_DEFAULT,
2341 SWS_PARAM_DEFAULT };
2342
2343 ✗ if (!param)
2344 ✗ param = default_param;
2345
2346 ✗ if (prev && (prev->src_w == srcW &&
2347 ✗ prev->src_h == srcH &&
2348 ✗ prev->src_format == srcFormat &&
2349 ✗ prev->dst_w == dstW &&
2350 ✗ prev->dst_h == dstH &&
2351 ✗ prev->dst_format == dstFormat &&
2352 ✗ prev->flags == flags &&
2353 ✗ !memcmp(prev->scaler_params, param,
2354 sizeof(prev->scaler_params)))) {
2355 ✗ return prev;
2356 }
2357
2358 ✗ if (!(sws = sws_alloc_context())) {
2359 ✗ sws_free_context(&prev);
2360 ✗ return NULL;
2361 }
2362
2363 ✗ if (prev) {
2364 ✗ av_opt_copy(sws, prev);
2365 ✗ sws_free_context(&prev);
2366 }
2367
2368 ✗ sws->src_w = srcW;
2369 ✗ sws->src_h = srcH;
2370 ✗ sws->src_format = srcFormat;
2371 ✗ sws->dst_w = dstW;
2372 ✗ sws->dst_h = dstH;
2373 ✗ sws->dst_format = dstFormat;
2374 ✗ sws->flags = flags;
2375 ✗ for (int i = 0; i < SWS_NUM_SCALER_PARAMS; i++)
2376 ✗ sws->scaler_params[i] = param[i];
2377
2378 ✗ if (sws_init_context(sws, srcFilter, dstFilter) < 0)
2379 ✗ sws_free_context(&sws);
2380
2381 ✗ return sws;
2382 }
2383
2384 ✗ int ff_range_add(RangeList *rl, unsigned int start, unsigned int len)
2385 {
2386 Range *tmp;
2387 unsigned int idx;
2388
2389 /* find the first existing range after the new one */
2390 ✗ for (idx = 0; idx < rl->nb_ranges; idx++)
2391 ✗ if (rl->ranges[idx].start > start)
2392 ✗ break;
2393
2394 /* check for overlap */
2395 ✗ if (idx > 0) {
2396 ✗ Range *prev = &rl->ranges[idx - 1];
2397 ✗ if (prev->start + prev->len > start)
2398 ✗ return AVERROR(EINVAL);
2399 }
2400 ✗ if (idx < rl->nb_ranges) {
2401 ✗ Range *next = &rl->ranges[idx];
2402 ✗ if (start + len > next->start)
2403 ✗ return AVERROR(EINVAL);
2404 }
2405
2406 ✗ tmp = av_fast_realloc(rl->ranges, &rl->ranges_allocated,
2407 ✗ (rl->nb_ranges + 1) * sizeof(*rl->ranges));
2408 ✗ if (!tmp)
2409 ✗ return AVERROR(ENOMEM);
2410 ✗ rl->ranges = tmp;
2411
2412 ✗ memmove(rl->ranges + idx + 1, rl->ranges + idx,
2413 ✗ sizeof(*rl->ranges) * (rl->nb_ranges - idx));
2414 ✗ rl->ranges[idx].start = start;
2415 ✗ rl->ranges[idx].len = len;
2416 ✗ rl->nb_ranges++;
2417
2418 /* merge ranges */
2419 ✗ if (idx > 0) {
2420 ✗ Range *prev = &rl->ranges[idx - 1];
2421 ✗ Range *cur = &rl->ranges[idx];
2422 ✗ if (prev->start + prev->len == cur->start) {
2423 ✗ prev->len += cur->len;
2424 ✗ memmove(rl->ranges + idx - 1, rl->ranges + idx,
2425 ✗ sizeof(*rl->ranges) * (rl->nb_ranges - idx));
2426 ✗ rl->nb_ranges--;
2427 ✗ idx--;
2428 }
2429 }
2430 ✗ if (idx < rl->nb_ranges - 1) {
2431 ✗ Range *cur = &rl->ranges[idx];
2432 ✗ Range *next = &rl->ranges[idx + 1];
2433 ✗ if (cur->start + cur->len == next->start) {
2434 ✗ cur->len += next->len;
2435 ✗ memmove(rl->ranges + idx, rl->ranges + idx + 1,
2436 ✗ sizeof(*rl->ranges) * (rl->nb_ranges - idx - 1));
2437 ✗ rl->nb_ranges--;
2438 }
2439 }
2440
2441 ✗ return 0;
2442 }
2443
2444 8 int ff_sws_thread_exec(void *priv,
2445 int (*func)(void *priv, int jobnr, int threadnr, int nb_jobs, int nb_threads),
2446 int nb_threads, int nb_jobs)
2447 {
2448 AVSliceThread *slicethread;
2449 8 int ret = avpriv_slicethread_create2(&slicethread, priv, func, NULL, nb_threads);
2450
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 8 if (ret == AVERROR(ENOSYS)) {
2451 /* Fallback for build configurations without threading */
2452 ✗ for (int i = 0; i < nb_jobs; i++) {
2453 ✗ int ret = func(priv, i, 0, nb_jobs, 1);
2454 ✗ if (ret)
2455 ✗ return ret;
2456 }
2457 ✗ return 0;
2458
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 8 } else if (ret < 0) {
2459 ✗ return ret;
2460 }
2461
2462 8 ret = avpriv_slicethread_execute2(slicethread, nb_jobs, 0);
2463 8 avpriv_slicethread_free(&slicethread);
2464 8 return ret;
2465 }
2466