FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libswscale/utils.c
Date: 2026-09-05 04:28:30
Exec Total Coverage
Lines: 777 1387 56.0%
Functions: 24 46 52.2%
Branches: 669 1242 53.9%
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 462306 SwsBackend ff_sws_enabled_backends(const SwsContext *ctx)
61 {
62
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 462306 if (ctx->backends)
63 350097 return ctx->backends;
64
65 112209 SwsBackend fallback = SWS_BACKEND_STABLE;
66
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 112209 if (ctx->flags & SWS_UNSTABLE)
67 ✗ fallback |= SWS_BACKEND_UNSTABLE;
68
69 112209 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 118888 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 118888 int cpu_flags = av_get_cpu_flags();
104
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 118888 if (!filter)
105 ✗ return 0;
106
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 118888 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 118888 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 471520 static av_cold int get_local_pos(SwsInternal *s, int chr_subsample, int pos, int dir)
169 {
170
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 471520 if (pos == -1 || pos <= -513) {
171 210639 pos = (128 << chr_subsample) - 128;
172 }
173 471520 pos += 128; // relative to ideal left edge
174 471520 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 235760 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 235760 int64_t *filter = NULL;
209 235760 int64_t *filter2 = NULL;
210 235760 const int64_t fone = 1LL << (54 - FFMIN(av_log2(srcW/dstW), 8));
211 235760 int ret = -1;
212
213 235760 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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 235760 if (!FF_ALLOC_TYPED_ARRAY(*filterPos, dstW + 3))
217 ✗ goto nomem;
218
219
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 392484 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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 79036 } 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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 78735 } 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 78645 int sizeFactor = -1;
271
272
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 266082 for (i = 0; i < FF_ARRAY_ELEMS(scale_algorithms); i++) {
273
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 266076 if (scaler == scale_algorithms[i].flag && scale_algorithms[i].size_factor > 0) {
274 78639 sizeFactor = scale_algorithms[i].size_factor;
275 78639 break;
276 }
277 }
278
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 78645 if (scaler == SWS_LANCZOS)
279
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 6 sizeFactor = param[0] != SWS_PARAM_DEFAULT ? ceil(2 * param[0]) : 6;
280
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 78645 av_assert0(sizeFactor > 0);
281
282
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 78645 if (sizeFactor > 50) {
283 ✗ ret = AVERROR(EINVAL);
284 ✗ goto fail;
285 }
286
287
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 78645 if (xInc <= 1 << 16)
288 42314 filterSize = 1 + sizeFactor; // upscale
289 else
290 36331 filterSize = 1 + (sizeFactor * srcW + dstW - 1) / dstW;
291
292
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 78645 filterSize = FFMIN(filterSize, srcW - 2);
293 78645 filterSize = FFMAX(filterSize, 1);
294
295 78645 filter = av_malloc_array(dstW, filterSize * sizeof(*filter));
296
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 78645 if (!filter)
297 ✗ goto nomem;
298 78645 xDstInSrc = ((dstPos*(int64_t)xInc)>>7) - ((srcPos*0x10000LL)>>7);
299
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 13585813 for (i = 0; i < dstW; i++) {
300 13507168 int xx = (xDstInSrc - (filterSize - 2) * (1LL<<16)) / (1 << 17);
301 int j;
302 13507168 (*filterPos)[i] = xx;
303
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 79624944 for (j = 0; j < filterSize; j++) {
304 66117776 int64_t d = (FFABS(((int64_t)xx * (1 << 17)) - xDstInSrc)) << 13;
305 double floatd;
306 int64_t coeff;
307
308
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 66117776 if (xInc > 1 << 16)
309 23938633 d = d * dstW / srcW;
310 66117776 floatd = d * (1.0 / (1 << 30));
311
312
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 66117776 if (scaler == SWS_BICUBIC) {
313
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 47252797 int64_t B = (param[0] != SWS_PARAM_DEFAULT ? param[0] : 0) * (1 << 24);
314
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 47252797 int64_t C = (param[1] != SWS_PARAM_DEFAULT ? param[1] : 0.6) * (1 << 24);
315
316
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 47252797 if (d >= 1LL << 31) {
317 8397183 coeff = 0.0;
318 } else {
319 38855614 int64_t dd = (d * d) >> 30;
320 38855614 int64_t ddd = (dd * d) >> 30;
321
322
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 38855614 if (d < 1LL << 30)
323 19444920 coeff = (12 * (1 << 24) - 9 * B - 6 * C) * ddd +
324 19444920 (-18 * (1 << 24) + 12 * B + 6 * C) * dd +
325 19444920 (6 * (1 << 24) - 2 * B) * (1 << 30);
326 else
327 19410694 coeff = (-B - 6 * C) * ddd +
328 19410694 (6 * B + 30 * C) * dd +
329 19410694 (-12 * B - 48 * C) * d +
330 19410694 (8 * B + 24 * C) * (1 << 30);
331 }
332 47252797 coeff /= (1LL<<54)/fone;
333
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 18864979 } 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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 18864979 } 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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 18576052 } 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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 18576052 } else if (scaler == SWS_SINC) {
359 ✗ coeff = (d ? sin(floatd * M_PI) / (floatd * M_PI) : 1.0) * fone;
360
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 18576052 } else if (scaler == SWS_LANCZOS) {
361
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 832 double p = param[0] != SWS_PARAM_DEFAULT ? param[0] : 3.0;
362 1664 coeff = (d ? sin(floatd * M_PI) * sin(floatd * M_PI / p) /
363
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 832 (floatd * floatd * M_PI * M_PI / p) : 1.0) * fone;
364
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 832 if (floatd > p)
365 90 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 66117776 filter[i * filterSize + j] = coeff;
379 66117776 xx++;
380 }
381 13507168 xDstInSrc += 2LL * xInc;
382 }
383 }
384
385 /* apply src & dst Filter to filter -> filter2
386 * av_free(filter);
387 */
388
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 235760 av_assert0(filterSize > 0);
389 235760 filter2Size = filterSize;
390
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 235760 if (srcFilter)
391 ✗ filter2Size += srcFilter->length - 1;
392
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 235760 if (dstFilter)
393 ✗ filter2Size += dstFilter->length - 1;
394
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 235760 av_assert0(filter2Size > 0);
395 235760 filter2 = av_calloc(dstW, filter2Size * sizeof(*filter2));
396
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 235760 if (!filter2)
397 ✗ goto nomem;
398
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 53672302 for (i = 0; i < dstW; i++) {
399 int j, k;
400
401
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 53436542 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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 159720992 for (j = 0; j < filterSize; j++)
409 106284450 filter2[i * filter2Size + j] = filter[i * filterSize + j];
410 }
411 // FIXME dstFilter
412
413 53436542 (*filterPos)[i] += (filterSize - 1) / 2 - (filter2Size - 1) / 2;
414 }
415 235760 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 235760 minFilterSize = 0;
420
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 53672302 for (i = dstW - 1; i >= 0; i--) {
421 53436542 int min = filter2Size;
422 int j;
423 53436542 int64_t cutOff = 0.0;
424
425 /* get rid of near zero elements on the left by shifting left */
426
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 59649399 for (j = 0; j < filter2Size; j++) {
427 int k;
428 59649399 cutOff += FFABS(filter2[i * filter2Size]);
429
430
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 59649399 if (cutOff > SWS_MAX_REDUCE_CUTOFF * fone)
431 53433721 break;
432
433 /* preserve monotonicity because the core can't handle the
434 * filter otherwise */
435
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 6215678 if (i < dstW - 1 && (*filterPos)[i] >= (*filterPos)[i + 1])
436 2821 break;
437
438 // move filter coefficients left
439
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 28486364 for (k = 1; k < filter2Size; k++)
440 22273507 filter2[i * filter2Size + k - 1] = filter2[i * filter2Size + k];
441 6212857 filter2[i * filter2Size + k - 1] = 0;
442 6212857 (*filterPos)[i]++;
443 }
444
445 53436542 cutOff = 0;
446 /* count near zeros on the right */
447
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 68068782 for (j = filter2Size - 1; j > 0; j--) {
448 28341770 cutOff += FFABS(filter2[i * filter2Size + j]);
449
450
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 28341770 if (cutOff > SWS_MAX_REDUCE_CUTOFF * fone)
451 13709530 break;
452 14632240 min--;
453 }
454
455
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 53436542 if (min > minFilterSize)
456 236468 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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 235760 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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 131692 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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 235760 av_assert0(minFilterSize > 0);
487 235760 filterSize = (minFilterSize + (filterAlign - 1)) & (~(filterAlign - 1));
488
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 235760 av_assert0(filterSize > 0);
489 235760 filter = av_malloc_array(dstW, filterSize * sizeof(*filter));
490
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 235760 if (!filter)
491 ✗ goto nomem;
492
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 235760 if (filterSize >= MAX_FILTER_SIZE * 16 /
493
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 235760 ((flags & SWS_ACCURATE_RND) ? APCK_SIZE : 16)) {
494 ✗ ret = RETCODE_USE_CASCADE;
495 ✗ goto fail;
496 }
497 235760 *outFilterSize = filterSize;
498
499
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 235760 if (flags & SWS_PRINT_INFO)
500 8 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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 53672302 for (i = 0; i < dstW; i++) {
505 int j;
506
507
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 177110249 for (j = 0; j < filterSize; j++) {
508
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 123673707 if (j >= filter2Size)
509 27063170 filter[i * filterSize + j] = 0;
510 else
511 96610537 filter[i * filterSize + j] = filter2[i * filter2Size + j];
512
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 123673707 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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 53672302 for (i = 0; i < dstW; i++) {
521 int j;
522
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 53436542 if ((*filterPos)[i] < 0) {
523 // move filter coefficients left to compensate for filterPos
524
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 279529 for (j = 1; j < filterSize; j++) {
525 230948 int left = FFMAX(j + (*filterPos)[i], 0);
526 230948 filter[i * filterSize + left] += filter[i * filterSize + j];
527 230948 filter[i * filterSize + j] = 0;
528 }
529 48581 (*filterPos)[i]= 0;
530 }
531
532
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 53436542 if ((*filterPos)[i] + filterSize > srcW) {
533 301771 int shift = (*filterPos)[i] + FFMIN(filterSize - srcW, 0);
534 301771 int64_t acc = 0;
535
536
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 1569466 for (j = filterSize - 1; j >= 0; j--) {
537
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 1267695 if ((*filterPos)[i] + j >= srcW) {
538 523027 acc += filter[i * filterSize + j];
539 523027 filter[i * filterSize + j] = 0;
540 }
541 }
542
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 1569466 for (j = filterSize - 1; j >= 0; j--) {
543
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 1267695 if (j < shift) {
544 523027 filter[i * filterSize + j] = 0;
545 } else {
546 744668 filter[i * filterSize + j] = filter[i * filterSize + j - shift];
547 }
548 }
549
550 301771 (*filterPos)[i]-= shift;
551 301771 filter[i * filterSize + srcW - 1 - (*filterPos)[i]] += acc;
552 }
553
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 53436542 av_assert0((*filterPos)[i] >= 0);
554
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 53436542 av_assert0((*filterPos)[i] < srcW);
555
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 53436542 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 235760 *outFilter = av_calloc(dstW + 3, *outFilterSize * sizeof(**outFilter));
565
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 235760 if (!*outFilter)
566 ✗ goto nomem;
567
568 /* normalize & store in outFilter */
569
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 53672302 for (i = 0; i < dstW; i++) {
570 int j;
571 53436542 int64_t error = 0;
572 53436542 int64_t sum = 0;
573
574
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 177110249 for (j = 0; j < filterSize; j++) {
575 123673707 sum += filter[i * filterSize + j];
576 }
577 53436542 sum = (sum + one / 2) / one;
578
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 53436542 if (!sum) {
579 ✗ av_log(NULL, AV_LOG_WARNING, "SwScaler: zero vector in scaling\n");
580 ✗ sum = 1;
581 }
582
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 177110249 for (j = 0; j < *outFilterSize; j++) {
583 123673707 int64_t v = filter[i * filterSize + j] + error;
584
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 123673707 int intV = ROUNDED_DIV(v, sum);
585 123673707 (*outFilter)[i * (*outFilterSize) + j] = intV;
586 123673707 error = v - intV * sum;
587 }
588 }
589
590 235760 (*filterPos)[dstW + 0] =
591 235760 (*filterPos)[dstW + 1] =
592 235760 (*filterPos)[dstW + 2] = (*filterPos)[dstW - 1]; /* the MMX/SSE scaler will
593 * read over the end */
594
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 838442 for (i = 0; i < *outFilterSize; i++) {
595 602682 int k = (dstW - 1) * (*outFilterSize) + i;
596 602682 (*outFilter)[k + 1 * (*outFilterSize)] =
597 602682 (*outFilter)[k + 2 * (*outFilterSize)] =
598 602682 (*outFilter)[k + 3 * (*outFilterSize)] = (*outFilter)[k];
599 }
600
601 235760 ret = 0;
602 235760 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 235760 av_free(filter);
610 235760 av_free(filter2);
611 235760 return ret;
612 }
613
614 39757 static void fill_rgb2yuv_table(SwsInternal *c, const int table[4], int dstRange)
615 {
616 int64_t W, V, Z, Cy, Cu, Cv;
617 39757 int64_t vr = table[0];
618 39757 int64_t ub = table[1];
619 39757 int64_t ug = -table[2];
620 39757 int64_t vg = -table[3];
621 39757 int64_t ONE = 65536;
622 39757 int64_t cy = ONE;
623 39757 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 39757 dstRange = 0; //FIXME range = 1 is handled elsewhere
664
665
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 39757 if (!dstRange) {
666 39757 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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 39757 W = ROUNDED_DIV(ONE*ONE*ug, ub);
674
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 39757 V = ROUNDED_DIV(ONE*ONE*vg, vr);
675 39757 Z = ONE*ONE-W-V;
676
677
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 39757 Cy = ROUNDED_DIV(cy*Z, ONE);
678
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 39757 Cu = ROUNDED_DIV(ub*Z, ONE);
679
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 39757 Cv = ROUNDED_DIV(vr*Z, ONE);
680
681
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 39757 c->input_rgb2yuv_table[RY_IDX] = -ROUNDED_DIV((1 << RGB2YUV_SHIFT)*V , Cy);
682 39757 c->input_rgb2yuv_table[GY_IDX] = ROUNDED_DIV((1 << RGB2YUV_SHIFT)*ONE*ONE , Cy);
683
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 39757 c->input_rgb2yuv_table[BY_IDX] = -ROUNDED_DIV((1 << RGB2YUV_SHIFT)*W , Cy);
684
685
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 39757 c->input_rgb2yuv_table[RU_IDX] = ROUNDED_DIV((1 << RGB2YUV_SHIFT)*V , Cu);
686 39757 c->input_rgb2yuv_table[GU_IDX] = -ROUNDED_DIV((1 << RGB2YUV_SHIFT)*ONE*ONE , Cu);
687
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 39757 c->input_rgb2yuv_table[BU_IDX] = ROUNDED_DIV((1 << RGB2YUV_SHIFT)*(Z+W) , Cu);
688
689
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 39757 c->input_rgb2yuv_table[RV_IDX] = ROUNDED_DIV((1 << RGB2YUV_SHIFT)*(V+Z) , Cv);
690 39757 c->input_rgb2yuv_table[GV_IDX] = -ROUNDED_DIV((1 << RGB2YUV_SHIFT)*ONE*ONE , Cv);
691
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 39757 c->input_rgb2yuv_table[BV_IDX] = ROUNDED_DIV((1 << RGB2YUV_SHIFT)*W , Cv);
692
693
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 39757 if(/*!dstRange && */!memcmp(table, ff_yuv2rgb_coeffs[SWS_CS_DEFAULT], sizeof(ff_yuv2rgb_coeffs[SWS_CS_DEFAULT]))) {
694 39757 c->input_rgb2yuv_table[BY_IDX] = ((int)(0.114 * 219 / 255 * (1 << RGB2YUV_SHIFT) + 0.5));
695 39757 c->input_rgb2yuv_table[BV_IDX] = (-(int)(0.081 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5));
696 39757 c->input_rgb2yuv_table[BU_IDX] = ((int)(0.500 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5));
697 39757 c->input_rgb2yuv_table[GY_IDX] = ((int)(0.587 * 219 / 255 * (1 << RGB2YUV_SHIFT) + 0.5));
698 39757 c->input_rgb2yuv_table[GV_IDX] = (-(int)(0.419 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5));
699 39757 c->input_rgb2yuv_table[GU_IDX] = (-(int)(0.331 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5));
700 39757 c->input_rgb2yuv_table[RY_IDX] = ((int)(0.299 * 219 / 255 * (1 << RGB2YUV_SHIFT) + 0.5));
701 39757 c->input_rgb2yuv_table[RV_IDX] = ((int)(0.500 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5));
702 39757 c->input_rgb2yuv_table[RU_IDX] = (-(int)(0.169 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5));
703 }
704
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 11171717 for(i=0; i<FF_ARRAY_ELEMS(map); i++)
705
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 11131960 AV_WL16(p + 16*4 + 2*i, map[i] >= 0 ? c->input_rgb2yuv_table[map[i]] : 0);
706 39757 }
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 91376 static int handle_jpeg(/* enum AVPixelFormat */ int *format)
774 {
775
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 91376 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 86309 default:
807 86309 return 0;
808 }
809 }
810
811 400926 static int handle_0alpha(/* enum AVPixelFormat */ int *format)
812 {
813
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 400926 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 399699 default: return 0;
819 }
820 }
821
822 400926 static int handle_xyz(/* enum AVPixelFormat */ int *format)
823 {
824
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 400926 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 400874 default: return 0;
828 }
829 }
830
831 200463 static int handle_formats(SwsContext *sws)
832 {
833 200463 SwsInternal *c = sws_internal(sws);
834 200463 c->src0Alpha |= handle_0alpha(&sws->src_format);
835 200463 c->dst0Alpha |= handle_0alpha(&sws->dst_format);
836 200463 c->srcXYZ |= handle_xyz(&sws->src_format);
837 200463 c->dstXYZ |= handle_xyz(&sws->dst_format);
838
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 200463 if (c->srcXYZ || c->dstXYZ)
839 150 return ff_sws_fill_xyztables(c);
840 else
841 200313 return 0;
842 }
843
844 342192 static int range_override_needed(enum AVPixelFormat format)
845 {
846
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 342192 return !isYUV(format) && !isGray(format);
847 }
848
849 131584 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 131584 SwsInternal *c = sws_internal(sws);
854 const AVPixFmtDescriptor *desc_dst;
855 const AVPixFmtDescriptor *desc_src;
856 131584 int ret, need_reinit = 0;
857
858
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 131584 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 131584 ret = handle_formats(sws);
872
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 131584 if (ret < 0)
873 ✗ return ret;
874 131584 desc_dst = av_pix_fmt_desc_get(sws->dst_format);
875 131584 desc_src = av_pix_fmt_desc_get(sws->src_format);
876
877
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 131584 if(range_override_needed(sws->dst_format))
878 27103 dstRange = 0;
879
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 131584 if(range_override_needed(sws->src_format))
880 54561 srcRange = 0;
881
882
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 131584 if (sws->src_range != srcRange ||
883
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 112569 sws->dst_range != dstRange ||
884
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885
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 110807 c->contrast != contrast ||
886
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 62705 c->saturation != saturation ||
887
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 62705 memcmp(c->srcColorspaceTable, inv_table, sizeof(int) * 4) ||
888
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 62544 memcmp(c->dstColorspaceTable, table, sizeof(int) * 4)
889 )
890 69040 need_reinit = 1;
891
892 131584 memmove(c->srcColorspaceTable, inv_table, sizeof(int) * 4);
893 131584 memmove(c->dstColorspaceTable, table, sizeof(int) * 4);
894
895
896
897 131584 c->brightness = brightness;
898 131584 c->contrast = contrast;
899 131584 c->saturation = saturation;
900 131584 sws->src_range = srcRange;
901 131584 sws->dst_range = dstRange;
902
903
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 131584 if (need_reinit)
904 69040 ff_sws_init_range_convert(c);
905
906 131584 c->dstFormatBpp = av_get_bits_per_pixel(desc_dst);
907 131584 c->srcFormatBpp = av_get_bits_per_pixel(desc_src);
908
909
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 131584 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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 131584 if (!need_reinit)
913 62544 return 0;
914
915
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 69040 if ((isYUV(sws->dst_format) || isGray(sws->dst_format)) && (isYUV(sws->src_format) || isGray(sws->src_format))) {
916
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 29283 if (!c->cascaded_context[0] &&
917
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 29283 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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 29282 if (c->cascaded_context[0] && memcmp(c->dstColorspaceTable, c->srcColorspaceTable, sizeof(int) * 4))
987 ✗ return -1; //AVERROR_PATCHWELCOME;
988 29282 return 0;
989 }
990
991
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 39757 if (!isYUV(sws->dst_format) && !isGray(sws->dst_format)) {
992 16365 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 39757 fill_rgb2yuv_table(c, table, dstRange);
1003
1004 39757 return 0;
1005 }
1006
1007 39512 int sws_getColorspaceDetails(SwsContext *sws, int **inv_table,
1008 int *srcRange, int **table, int *dstRange,
1009 int *brightness, int *contrast, int *saturation)
1010 {
1011 39512 SwsInternal *c = sws_internal(sws);
1012
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 39512 if (!c)
1013 ✗ return -1;
1014
1015
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 39512 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 39512 *inv_table = c->srcColorspaceTable;
1022 39512 *table = c->dstColorspaceTable;
1023
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 39512 *srcRange = range_override_needed(sws->src_format) ? 1 : sws->src_range;
1024
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 39512 *dstRange = range_override_needed(sws->dst_format) ? 1 : sws->dst_range;
1025 39512 *brightness = c->brightness;
1026 39512 *contrast = c->contrast;
1027 39512 *saturation = c->saturation;
1028
1029 39512 return 0;
1030 }
1031
1032 89133 SwsContext *sws_alloc_context(void)
1033 {
1034 89133 SwsInternal *c = av_mallocz(sizeof(*c) + SWSINTERNAL_ADDITIONAL_ASM_SIZE);
1035
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 89133 if (!c)
1036 ✗ return NULL;
1037
1038 89133 c->opts.av_class = &ff_sws_context_class;
1039 89133 av_opt_set_defaults(c);
1040 89133 atomic_init(&c->stride_unaligned_warned, 0);
1041 89133 atomic_init(&c->data_unaligned_warned, 0);
1042
1043 89133 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 137758 static int scaler_flag(SwsScaler scaler, int fallback)
1122 {
1123
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 137758 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 3 case SWS_SCALE_LANCZOS: return SWS_LANCZOS; break;
1131 ✗ case SWS_SCALE_SPLINE: return SWS_SPLINE; break;
1132 137755 default:
1133 137755 return fallback;
1134 }
1135 }
1136
1137 68879 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 68879 SwsInternal *c = sws_internal(sws);
1144 68879 SwsFilter dummyFilter = { NULL, NULL, NULL, NULL };
1145 68879 int srcW = sws->src_w;
1146 68879 int srcH = sws->src_h;
1147 68879 int dstW = sws->dst_w;
1148 68879 int dstH = sws->dst_h;
1149 68879 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 68879 int ret = 0;
1155 enum AVPixelFormat tmpFmt;
1156 static const float float_mult = 1.0f / 255.0f;
1157
1158 68879 cpu_flags = av_get_cpu_flags();
1159 68879 flags = sws->flags;
1160 68879 emms_c();
1161
1162
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 68879 unscaled = (srcW == dstW && srcH == dstH);
1163
1164
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 68879 if (!c->contrast && !c->saturation && !c->dstFormatBpp)
1165 68879 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 68879 ret = handle_formats(sws);
1170
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 68879 if (ret < 0)
1171 ✗ return ret;
1172 68879 srcFormat = sws->src_format;
1173 68879 dstFormat = sws->dst_format;
1174 68879 desc_src = av_pix_fmt_desc_get(srcFormat);
1175 68879 desc_dst = av_pix_fmt_desc_get(dstFormat);
1176
1177 // If the source has no alpha then disable alpha blendaway
1178
2/2
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 68879 if (c->src0Alpha)
1179 1141 sws->alpha_blend = SWS_ALPHA_BLEND_NONE;
1180
1181
5/6
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 69420 if (!(unscaled && sws_isSupportedEndiannessConversion(srcFormat) &&
1182 541 av_pix_fmt_swap_endianness(srcFormat) == dstFormat)) {
1183
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 68879 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
1/2
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 68879 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 68879 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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 68879 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
1/2
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✓ Branch 1 taken 63206 times.
 63206 } 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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 68879 if (i == SWS_FAST_BILINEAR) {
1225
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✓ Branch 3 taken 1 times.
 1 if (srcW < 8 || dstW <= 8) {
1226 ✗ i = SWS_BILINEAR;
1227 ✗ flags ^= SWS_FAST_BILINEAR | i;
1228 ✗ sws->flags = flags;
1229 }
1230 }
1231
1232
2/2
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 68879 SwsScaler scaler_sub = sws->scaler_sub ? sws->scaler_sub : sws->scaler;
1233
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 68879 int lum_scaler = scaler_flag(sws->scaler, i == SWS_BICUBLIN ? SWS_BICUBIC : i);
1234
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✓ Branch 1 taken 1 times.
 68879 int chr_scaler = scaler_flag(scaler_sub, i == SWS_BICUBLIN ? SWS_BILINEAR : i);
1235
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 68878 const int info_scaler = sws->scaler == SWS_SCALE_AUTO &&
1236
1/2
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 1 i == SWS_BICUBLIN &&
1237
2/2
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 137757 chr_scaler == SWS_BILINEAR ? i : lum_scaler;
1238
1239 /* sanity check */
1240
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 68879 if (srcW < 1 || srcH < 1 || dstW < 1 || dstH < 1) {
1241 /* FIXME check if these are enough and try to lower them after
1242 * fixing the relevant parts of the code */
1243 ✗ av_log(c, AV_LOG_ERROR, "%dx%d -> %dx%d is invalid scaling dimension\n",
1244 srcW, srcH, dstW, dstH);
1245 ✗ return AVERROR(EINVAL);
1246 }
1247
1248
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 68879 if (!dstFilter)
1249 68879 dstFilter = &dummyFilter;
1250
1/2
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 68879 if (!srcFilter)
1251 68879 srcFilter = &dummyFilter;
1252
1253 68879 int64_t lumXInc = (((int64_t)srcW << 16) + (dstW >> 1)) / dstW;
1254 68879 int64_t lumYInc = (((int64_t)srcH << 16) + (dstH >> 1)) / dstH;
1255 68879 c->dstFormatBpp = av_get_bits_per_pixel(desc_dst);
1256 68879 c->srcFormatBpp = av_get_bits_per_pixel(desc_src);
1257 68879 c->vRounder = 4 * 0x0001000100010001ULL;
1258
1259 ✗ usesVFilter = (srcFilter->lumV && srcFilter->lumV->length > 1) ||
1260
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 68879 (srcFilter->chrV && srcFilter->chrV->length > 1) ||
1261
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 206637 (dstFilter->lumV && dstFilter->lumV->length > 1) ||
1262
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 68879 (dstFilter->chrV && dstFilter->chrV->length > 1);
1263 ✗ usesHFilter = (srcFilter->lumH && srcFilter->lumH->length > 1) ||
1264
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 68879 (srcFilter->chrH && srcFilter->chrH->length > 1) ||
1265
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 206637 (dstFilter->lumH && dstFilter->lumH->length > 1) ||
1266
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 68879 (dstFilter->chrH && dstFilter->chrH->length > 1);
1267
1268 68879 av_pix_fmt_get_chroma_sub_sample(srcFormat, &c->chrSrcHSubSample, &c->chrSrcVSubSample);
1269 68879 av_pix_fmt_get_chroma_sub_sample(dstFormat, &c->chrDstHSubSample, &c->chrDstVSubSample);
1270
1271 68879 c->dst_slice_align = 1 << c->chrDstVSubSample;
1272
1273
4/4
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 68879 if (isAnyRGB(dstFormat) && !(flags&SWS_FULL_CHR_H_INT)) {
1274
2/2
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 9275 if (dstW&1) {
1275 50 av_log(c, AV_LOG_DEBUG, "Forcing full internal H chroma due to odd output size\n");
1276 50 flags |= SWS_FULL_CHR_H_INT;
1277 50 sws->flags = flags;
1278 }
1279
1280
2/2
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 9275 if ( c->chrSrcHSubSample == 0
1281
2/2
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✓ Branch 1 taken 138 times.
 1493 && c->chrSrcVSubSample == 0
1282
1/2
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✗ Branch 1 not taken.
 1355 && sws->dither != SWS_DITHER_BAYER //SWS_FULL_CHR_H_INT is currently not supported with SWS_DITHER_BAYER
1283
1/2
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✗ Branch 1 not taken.
 1355 && !(sws->flags & SWS_FAST_BILINEAR)
1284 ) {
1285 1355 av_log(c, AV_LOG_DEBUG, "Forcing full internal H chroma due to input having non subsampled chroma\n");
1286 1355 flags |= SWS_FULL_CHR_H_INT;
1287 1355 sws->flags = flags;
1288 }
1289 }
1290
1291
2/2
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 68879 if (sws->dither == SWS_DITHER_AUTO) {
1292
1/2
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 57959 if (flags & SWS_ERROR_DIFFUSION)
1293 ✗ sws->dither = SWS_DITHER_ED;
1294 }
1295
1296
4/4
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 68879 if(dstFormat == AV_PIX_FMT_BGR4_BYTE ||
1297
2/2
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✓ Branch 1 taken 75 times.
 68762 dstFormat == AV_PIX_FMT_RGB4_BYTE ||
1298
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 68687 dstFormat == AV_PIX_FMT_BGR8 ||
1299 dstFormat == AV_PIX_FMT_RGB8) {
1300
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 253 if (sws->dither == SWS_DITHER_AUTO)
1301
2/2
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 253 sws->dither = (flags & SWS_FULL_CHR_H_INT) ? SWS_DITHER_ED : SWS_DITHER_BAYER;
1302
2/2
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 253 if (!(flags & SWS_FULL_CHR_H_INT)) {
1303
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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) {
1304 ✗ av_log(c, AV_LOG_DEBUG,
1305 "Desired dithering only supported in full chroma interpolation for destination format '%s'\n",
1306 av_get_pix_fmt_name(dstFormat));
1307 ✗ flags |= SWS_FULL_CHR_H_INT;
1308 ✗ sws->flags = flags;
1309 }
1310 }
1311
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 253 if (flags & SWS_FULL_CHR_H_INT) {
1312
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 19 if (sws->dither == SWS_DITHER_BAYER) {
1313 ✗ av_log(c, AV_LOG_DEBUG,
1314 "Ordered dither is not supported in full chroma interpolation for destination format '%s'\n",
1315 av_get_pix_fmt_name(dstFormat));
1316 ✗ sws->dither = SWS_DITHER_ED;
1317 }
1318 }
1319 }
1320
2/2
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 68879 if (isPlanarRGB(dstFormat)) {
1321
2/2
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✓ Branch 1 taken 4374 times.
 5190 if (!(flags & SWS_FULL_CHR_H_INT)) {
1322 816 av_log(c, AV_LOG_DEBUG,
1323 "%s output is not supported with half chroma resolution, switching to full\n",
1324 av_get_pix_fmt_name(dstFormat));
1325 816 flags |= SWS_FULL_CHR_H_INT;
1326 816 sws->flags = flags;
1327 }
1328 }
1329
1330 /* reuse chroma for 2 pixels RGB/BGR unless user wants full
1331 * chroma interpolation */
1332
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 78133 if (flags & SWS_FULL_CHR_H_INT &&
1333
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 18508 isAnyRGB(dstFormat) &&
1334
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 13318 !isPlanarRGB(dstFormat) &&
1335
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 4060 dstFormat != AV_PIX_FMT_RGBA64LE &&
1336
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 4057 dstFormat != AV_PIX_FMT_RGBA64BE &&
1337
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 4053 dstFormat != AV_PIX_FMT_BGRA64LE &&
1338
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 4050 dstFormat != AV_PIX_FMT_BGRA64BE &&
1339
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 3294 dstFormat != AV_PIX_FMT_RGB48LE &&
1340
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 3289 dstFormat != AV_PIX_FMT_RGB48BE &&
1341
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 3285 dstFormat != AV_PIX_FMT_BGR48LE &&
1342
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 3282 dstFormat != AV_PIX_FMT_BGR48BE &&
1343
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 3205 dstFormat != AV_PIX_FMT_RGBA &&
1344
2/2
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✓ Branch 1 taken 544 times.
 3187 dstFormat != AV_PIX_FMT_ARGB &&
1345
2/2
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 2643 dstFormat != AV_PIX_FMT_BGRA &&
1346
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 2635 dstFormat != AV_PIX_FMT_ABGR &&
1347
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 873 dstFormat != AV_PIX_FMT_RGB24 &&
1348
2/2
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 731 dstFormat != AV_PIX_FMT_BGR24 &&
1349
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 727 dstFormat != AV_PIX_FMT_BGR4_BYTE &&
1350
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 723 dstFormat != AV_PIX_FMT_RGB4_BYTE &&
1351
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 717 dstFormat != AV_PIX_FMT_BGR8 &&
1352
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 712 dstFormat != AV_PIX_FMT_RGB8 &&
1353
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 599 dstFormat != AV_PIX_FMT_X2RGB10LE &&
1354 dstFormat != AV_PIX_FMT_X2BGR10LE
1355 ) {
1356 486 av_log(c, AV_LOG_WARNING,
1357 "full chroma interpolation for destination format '%s' not yet implemented\n",
1358 av_get_pix_fmt_name(dstFormat));
1359 486 flags &= ~SWS_FULL_CHR_H_INT;
1360 486 sws->flags = flags;
1361 }
1362
4/4
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 68879 if (isAnyRGB(dstFormat) && !(flags & SWS_FULL_CHR_H_INT))
1363 7586 c->chrDstHSubSample = 1;
1364
1365 // drop some chroma lines if the user wants it
1366 68879 c->vChrDrop = (flags & SWS_SRC_V_CHR_DROP_MASK) >>
1367 SWS_SRC_V_CHR_DROP_SHIFT;
1368 68879 c->chrSrcVSubSample += c->vChrDrop;
1369
1370 /* drop every other pixel for chroma calculation unless user
1371 * wants full chroma */
1372
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 68879 if (isAnyRGB(srcFormat) && !(srcW & 1) && !(flags & SWS_FULL_CHR_H_INP) &&
1373
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 25847 srcFormat != AV_PIX_FMT_RGB8 && srcFormat != AV_PIX_FMT_BGR8 &&
1374
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 25545 srcFormat != AV_PIX_FMT_RGB4 && srcFormat != AV_PIX_FMT_BGR4 &&
1375
4/4
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 25246 srcFormat != AV_PIX_FMT_RGB4_BYTE && srcFormat != AV_PIX_FMT_BGR4_BYTE &&
1376
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 24683 srcFormat != AV_PIX_FMT_GBRP9BE && srcFormat != AV_PIX_FMT_GBRP9LE &&
1377
4/4
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 23978 srcFormat != AV_PIX_FMT_GBRP10BE && srcFormat != AV_PIX_FMT_GBRP10LE &&
1378
4/4
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 22363 srcFormat != AV_PIX_FMT_GBRP10MSBBE && srcFormat != AV_PIX_FMT_GBRP10MSBLE &&
1379
4/4
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 21789 srcFormat != AV_PIX_FMT_GBRAP10BE && srcFormat != AV_PIX_FMT_GBRAP10LE &&
1380
4/4
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 21128 srcFormat != AV_PIX_FMT_GBRP12BE && srcFormat != AV_PIX_FMT_GBRP12LE &&
1381
4/4
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 19486 srcFormat != AV_PIX_FMT_GBRP12MSBBE && srcFormat != AV_PIX_FMT_GBRP12MSBLE &&
1382
4/4
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 18938 srcFormat != AV_PIX_FMT_GBRAP12BE && srcFormat != AV_PIX_FMT_GBRAP12LE &&
1383
4/4
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 18367 srcFormat != AV_PIX_FMT_GBRAP14BE && srcFormat != AV_PIX_FMT_GBRAP14LE &&
1384
4/4
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 17827 srcFormat != AV_PIX_FMT_GBRP14BE && srcFormat != AV_PIX_FMT_GBRP14LE &&
1385
4/4
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 17082 srcFormat != AV_PIX_FMT_GBRP16BE && srcFormat != AV_PIX_FMT_GBRP16LE &&
1386
4/4
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 16156 srcFormat != AV_PIX_FMT_GBRAP16BE && srcFormat != AV_PIX_FMT_GBRAP16LE &&
1387
4/4
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 15833 srcFormat != AV_PIX_FMT_GBRPF32BE && srcFormat != AV_PIX_FMT_GBRPF32LE &&
1388
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 15796 srcFormat != AV_PIX_FMT_GBRAPF32BE && srcFormat != AV_PIX_FMT_GBRAPF32LE &&
1389
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 15795 srcFormat != AV_PIX_FMT_GBRPF16BE && srcFormat != AV_PIX_FMT_GBRPF16LE &&
1390
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 15576 srcFormat != AV_PIX_FMT_GBRAPF16BE && srcFormat != AV_PIX_FMT_GBRAPF16LE &&
1391
2/2
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 15531 ((dstW >> c->chrDstHSubSample) <= (srcW >> 1) ||
1392
1/2
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 14034 (flags & SWS_FAST_BILINEAR)))
1393 1497 c->chrSrcHSubSample = 1;
1394
1395 // Note the AV_CEIL_RSHIFT is so that we always round toward +inf.
1396 68879 c->chrSrcW = AV_CEIL_RSHIFT(srcW, c->chrSrcHSubSample);
1397 68879 c->chrSrcH = AV_CEIL_RSHIFT(srcH, c->chrSrcVSubSample);
1398 68879 c->chrDstW = AV_CEIL_RSHIFT(dstW, c->chrDstHSubSample);
1399 68879 c->chrDstH = AV_CEIL_RSHIFT(dstH, c->chrDstVSubSample);
1400
1401
1/2
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 68879 if (!FF_ALLOCZ_TYPED_ARRAY(c->formatConvBuffer, FFALIGN(srcW * 2 + 78, 16) * 2))
1402 ✗ goto nomem;
1403
1404 68879 c->srcBpc = desc_src->comp[0].depth;
1405
2/2
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 68879 if (c->srcBpc < 8)
1406 5844 c->srcBpc = 8;
1407 68879 c->dstBpc = desc_dst->comp[0].depth;
1408
2/2
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 68879 if (c->dstBpc < 8)
1409 3776 c->dstBpc = 8;
1410
4/4
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 68879 if (isAnyRGB(srcFormat) || srcFormat == AV_PIX_FMT_PAL8)
1411 27318 c->srcBpc = 16;
1412
2/2
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 68879 if (c->dstBpc == 16)
1413 5489 dst_stride <<= 1;
1414
1415
6/6
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 68879 if (INLINE_MMXEXT(cpu_flags) && c->srcBpc == 8 && c->dstBpc <= 14) {
1416
2/2
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 7255 c->canMMXEXTBeUsed = dstW >= srcW && (dstW & 31) == 0 &&
1417
4/4
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 20066 c->chrDstW >= c->chrSrcW &&
1418
1/2
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 4955 (srcW & 15) == 0;
1419
8/8
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 7856 if (!c->canMMXEXTBeUsed && dstW >= srcW && c->chrDstW >= c->chrSrcW && (srcW & 15) == 0
1420
1421
1/2
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 372 && (flags & SWS_FAST_BILINEAR)) {
1422 ✗ if (flags & SWS_PRINT_INFO)
1423 ✗ av_log(c, AV_LOG_INFO,
1424 "output width is not a multiple of 32 -> no MMXEXT scaler\n");
1425 }
1426
4/8
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 7856 if (usesHFilter || isNBPS(sws->src_format) || is16BPS(sws->src_format) || isAnyRGB(sws->src_format))
1427 ✗ c->canMMXEXTBeUsed = 0;
1428 } else
1429 61023 c->canMMXEXTBeUsed = 0;
1430
1431 68879 int64_t chrXInc = (((int64_t)c->chrSrcW << 16) + (c->chrDstW >> 1)) / c->chrDstW;
1432 68879 int64_t chrYInc = (((int64_t)c->chrSrcH << 16) + (c->chrDstH >> 1)) / c->chrDstH;
1433
1434 /* Match pixel 0 of the src to pixel 0 of dst and match pixel n-2 of src
1435 * to pixel n-2 of dst, but only for the FAST_BILINEAR mode otherwise do
1436 * correct scaling.
1437 * n-2 is the last chrominance sample available.
1438 * This is not perfect, but no one should notice the difference, the more
1439 * correct variant would be like the vertical one, but that would require
1440 * some special code for the first and last pixel */
1441
2/2
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 68879 if (flags & SWS_FAST_BILINEAR) {
1442
1/2
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 1 if (c->canMMXEXTBeUsed) {
1443 ✗ lumXInc += 20;
1444 ✗ chrXInc += 20;
1445 }
1446 // we don't use the x86 asm scaler if MMX is available
1447
1/4
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 1 else if (INLINE_MMX(cpu_flags) && c->dstBpc <= 14) {
1448 ✗ lumXInc = ((int64_t)(srcW - 2) << 16) / (dstW - 2) - 20;
1449 ✗ chrXInc = ((int64_t)(c->chrSrcW - 2) << 16) / (c->chrDstW - 2) - 20;
1450 }
1451 }
1452
3/6
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 68879 if (chrXInc < 10 || chrXInc > INT_MAX ||
1453
2/4
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 68879 chrYInc < 10 || chrYInc > INT_MAX ||
1454
2/4
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 68879 lumXInc < 10 || lumXInc > INT_MAX ||
1455
1/2
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 68879 lumYInc < 10 || lumYInc > INT_MAX)
1456 ✗ return AVERROR_PATCHWELCOME;
1457
1458 68879 c->lumXInc = lumXInc;
1459 68879 c->lumYInc = lumYInc;
1460 68879 c->chrXInc = chrXInc;
1461 68879 c->chrYInc = chrYInc;
1462
1463
1464 // hardcoded for now
1465 68879 c->gamma_value = 2.2;
1466 68879 tmpFmt = AV_PIX_FMT_RGBA64LE;
1467
1468
3/8
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 68879 if (!unscaled && sws->gamma_flag && (srcFormat != tmpFmt || dstFormat != tmpFmt)) {
1469 SwsInternal *c2;
1470 ✗ c->cascaded_context[0] = NULL;
1471
1472 ✗ ret = av_image_alloc(c->cascaded_tmp[0], c->cascaded_tmpStride[0],
1473 srcW, srcH, tmpFmt, 64);
1474 ✗ if (ret < 0)
1475 ✗ return ret;
1476
1477 ✗ c->cascaded_context[0] = sws_getContext(srcW, srcH, srcFormat,
1478 srcW, srcH, tmpFmt,
1479 flags, NULL, NULL,
1480 ✗ sws->scaler_params);
1481 ✗ if (!c->cascaded_context[0]) {
1482 ✗ return AVERROR(ENOMEM);
1483 }
1484
1485 ✗ c->cascaded_context[1] = sws_getContext(srcW, srcH, tmpFmt,
1486 dstW, dstH, tmpFmt,
1487 flags, srcFilter, dstFilter,
1488 ✗ sws->scaler_params);
1489
1490 ✗ if (!c->cascaded_context[1])
1491 ✗ return AVERROR(ENOMEM);
1492
1493 ✗ c2 = sws_internal(c->cascaded_context[1]);
1494 ✗ c2->is_internal_gamma = 1;
1495 ✗ c2->gamma = alloc_gamma_tbl( c->gamma_value);
1496 ✗ c2->inv_gamma = alloc_gamma_tbl(1.f/c->gamma_value);
1497 ✗ if (!c2->gamma || !c2->inv_gamma)
1498 ✗ return AVERROR(ENOMEM);
1499
1500 // is_internal_flag is set after creating the context
1501 // to properly create the gamma convert FilterDescriptor
1502 // we have to re-initialize it
1503 ✗ ff_free_filters(c2);
1504 ✗ if ((ret = ff_init_filters(c2)) < 0) {
1505 ✗ sws_freeContext(c->cascaded_context[1]);
1506 ✗ c->cascaded_context[1] = NULL;
1507 ✗ return ret;
1508 }
1509
1510 ✗ c->cascaded_context[2] = NULL;
1511 ✗ if (dstFormat != tmpFmt) {
1512 ✗ ret = av_image_alloc(c->cascaded_tmp[1], c->cascaded_tmpStride[1],
1513 dstW, dstH, tmpFmt, 64);
1514 ✗ if (ret < 0)
1515 ✗ return ret;
1516
1517 ✗ c->cascaded_context[2] = sws_getContext(dstW, dstH, tmpFmt,
1518 dstW, dstH, dstFormat,
1519 flags, NULL, NULL,
1520 ✗ sws->scaler_params);
1521 ✗ if (!c->cascaded_context[2])
1522 ✗ return AVERROR(ENOMEM);
1523 }
1524 ✗ return 0;
1525 }
1526
1527
1/2
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 68879 if (isBayer(srcFormat)) {
1528 ✗ if (!unscaled ||
1529 ✗ (dstFormat != AV_PIX_FMT_RGB24 && dstFormat != AV_PIX_FMT_YUV420P &&
1530 dstFormat != AV_PIX_FMT_RGB48)) {
1531 ✗ enum AVPixelFormat tmpFormat = isBayer16BPS(srcFormat) ? AV_PIX_FMT_RGB48 : AV_PIX_FMT_RGB24;
1532
1533 ✗ ret = av_image_alloc(c->cascaded_tmp[0], c->cascaded_tmpStride[0],
1534 srcW, srcH, tmpFormat, 64);
1535 ✗ if (ret < 0)
1536 ✗ return ret;
1537
1538 ✗ c->cascaded_context[0] = sws_getContext(srcW, srcH, srcFormat,
1539 srcW, srcH, tmpFormat,
1540 flags, srcFilter, NULL,
1541 ✗ sws->scaler_params);
1542 ✗ if (!c->cascaded_context[0])
1543 ✗ return AVERROR(ENOMEM);
1544
1545 ✗ c->cascaded_context[1] = sws_getContext(srcW, srcH, tmpFormat,
1546 dstW, dstH, dstFormat,
1547 flags, NULL, dstFilter,
1548 ✗ sws->scaler_params);
1549 ✗ if (!c->cascaded_context[1])
1550 ✗ return AVERROR(ENOMEM);
1551 ✗ return 0;
1552 }
1553 }
1554
1555
6/6
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 68879 if (unscaled && c->srcBpc == 8 && dstFormat == AV_PIX_FMT_GRAYF32){
1556
2/2
✓ Branch 0 taken 4352 times.
✓ Branch 1 taken 17 times.
 4369 for (i = 0; i < 256; ++i){
1557 4352 c->uint2float_lut[i] = (float)i * float_mult;
1558 }
1559 }
1560
1561 // float will be converted to uint16_t
1562
6/6
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 68879 if (isFloat(srcFormat) && !isAnyRGB(srcFormat) &&
1563
5/8
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 28 (!unscaled || unscaled && dstFormat != srcFormat && (srcFormat != AV_PIX_FMT_GRAYF32 ||
1564 dstFormat != AV_PIX_FMT_GRAY8))){
1565 30 c->srcBpc = 16;
1566 }
1567
1568
4/4
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✓ Branch 4 taken 1873 times.
✓ Branch 5 taken 11889 times.
 68879 if (CONFIG_SWSCALE_ALPHA && isALPHA(srcFormat) && !isALPHA(dstFormat)) {
1569 1873 enum AVPixelFormat tmpFormat = alphaless_fmt(srcFormat);
1570
1571
3/4
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 1873 if (tmpFormat != AV_PIX_FMT_NONE && sws->alpha_blend != SWS_ALPHA_BLEND_NONE) {
1572 ✗ if (!unscaled ||
1573 ✗ dstFormat != tmpFormat ||
1574 ✗ usesHFilter || usesVFilter ||
1575 ✗ sws->src_range != sws->dst_range
1576 ) {
1577 ✗ c->cascaded_mainindex = 1;
1578 ✗ ret = av_image_alloc(c->cascaded_tmp[0], c->cascaded_tmpStride[0],
1579 srcW, srcH, tmpFormat, 64);
1580 ✗ if (ret < 0)
1581 ✗ return ret;
1582
1583 ✗ c->cascaded_context[0] = alloc_set_opts(srcW, srcH, srcFormat,
1584 srcW, srcH, tmpFormat,
1585 ✗ flags, sws->scaler_params);
1586 ✗ if (!c->cascaded_context[0])
1587 ✗ return AVERROR(EINVAL);
1588 ✗ c->cascaded_context[0]->alpha_blend = sws->alpha_blend;
1589 ✗ ret = sws_init_context(c->cascaded_context[0], NULL , NULL);
1590 ✗ if (ret < 0)
1591 ✗ return ret;
1592
1593 ✗ c->cascaded_context[1] = alloc_set_opts(srcW, srcH, tmpFormat,
1594 dstW, dstH, dstFormat,
1595 ✗ flags, sws->scaler_params);
1596 ✗ if (!c->cascaded_context[1])
1597 ✗ return AVERROR(EINVAL);
1598
1599 ✗ c->cascaded_context[1]->src_range = sws->src_range;
1600 ✗ c->cascaded_context[1]->dst_range = sws->dst_range;
1601 ✗ ret = sws_init_context(c->cascaded_context[1], srcFilter , dstFilter);
1602 ✗ if (ret < 0)
1603 ✗ return ret;
1604
1605 ✗ return 0;
1606 }
1607 }
1608 }
1609
1610 /* alpha blend special case, note this has been split via cascaded contexts if its scaled */
1611
4/6
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 68879 if (unscaled && !usesHFilter && !usesVFilter &&
1612
1/4
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 49920 sws->alpha_blend != SWS_ALPHA_BLEND_NONE &&
1613 ✗ isALPHA(srcFormat) &&
1614 ✗ (sws->src_range == sws->dst_range || isAnyRGB(dstFormat)) &&
1615 ✗ alphaless_fmt(srcFormat) == dstFormat
1616 ) {
1617 ✗ c->convert_unscaled = ff_sws_alphablendaway;
1618
1619 ✗ if (flags & SWS_PRINT_INFO)
1620 ✗ av_log(c, AV_LOG_INFO,
1621 "using alpha blendaway %s -> %s special converter\n",
1622 av_get_pix_fmt_name(srcFormat), av_get_pix_fmt_name(dstFormat));
1623 ✗ return 0;
1624 }
1625
1626 /* unscaled special cases */
1627
4/6
✓ Branch 0 taken 49920 times.
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 68879 if (unscaled && !usesHFilter && !usesVFilter &&
1628
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) ||
1629
2/4
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✗ Branch 3 not taken.
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✓ Branch 6 taken 4473 times.
 8946 isFloat(srcFormat) || isFloat(dstFormat) || isBayer(srcFormat))){
1630
1631 45447 ff_get_unscaled_swscale(c);
1632
1633
2/2
✓ Branch 0 taken 9939 times.
✓ Branch 1 taken 35508 times.
 45447 if (c->convert_unscaled) {
1634
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 9939 times.
 9939 if (flags & SWS_PRINT_INFO)
1635 ✗ av_log(c, AV_LOG_INFO,
1636 "using unscaled %s -> %s special converter\n",
1637 av_get_pix_fmt_name(srcFormat), av_get_pix_fmt_name(dstFormat));
1638 9939 return 0;
1639 }
1640 }
1641
1642 /* precalculate horizontal scaler filter coefficients */
1643 {
1644 #if HAVE_MMXEXT_INLINE
1645 // can't downscale !!!
1646
3/4
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✗ Branch 2 not taken.
✓ Branch 3 taken 3705 times.
 58940 if (c->canMMXEXTBeUsed && (flags & SWS_FAST_BILINEAR)) {
1647 ✗ c->lumMmxextFilterCodeSize = ff_init_hscaler_mmxext(dstW, c->lumXInc, NULL,
1648 NULL, NULL, 8);
1649 ✗ c->chrMmxextFilterCodeSize = ff_init_hscaler_mmxext(c->chrDstW, c->chrXInc,
1650 NULL, NULL, NULL, 4);
1651
1652 ✗ c->lumMmxextFilterCode = ff_sws_jit_alloc(c->lumMmxextFilterCodeSize);
1653 ✗ c->chrMmxextFilterCode = ff_sws_jit_alloc(c->chrMmxextFilterCodeSize);
1654 ✗ if (!c->lumMmxextFilterCode || !c->chrMmxextFilterCode) {
1655 ✗ av_log(c, AV_LOG_ERROR, "Failed to allocate MMX2FilterCode\n");
1656 ✗ return AVERROR(ENOMEM);
1657 }
1658
1659 ✗ if (!FF_ALLOCZ_TYPED_ARRAY(c->hLumFilter, dstW / 8 + 8) ||
1660 ✗ !FF_ALLOCZ_TYPED_ARRAY(c->hChrFilter, c->chrDstW / 4 + 8) ||
1661 ✗ !FF_ALLOCZ_TYPED_ARRAY(c->hLumFilterPos, dstW / 2 / 8 + 8) ||
1662 ✗ !FF_ALLOCZ_TYPED_ARRAY(c->hChrFilterPos, c->chrDstW / 2 / 4 + 8))
1663 ✗ goto nomem;
1664
1665 ✗ ff_init_hscaler_mmxext( dstW, c->lumXInc, c->lumMmxextFilterCode,
1666 c->hLumFilter, (uint32_t*)c->hLumFilterPos, 8);
1667 ✗ ff_init_hscaler_mmxext(c->chrDstW, c->chrXInc, c->chrMmxextFilterCode,
1668 c->hChrFilter, (uint32_t*)c->hChrFilterPos, 4);
1669
1670 ✗ if ((ret = ff_sws_jit_protect(c->lumMmxextFilterCode, c->lumMmxextFilterCodeSize)) < 0 ||
1671 ✗ (ret = ff_sws_jit_protect(c->chrMmxextFilterCode, c->chrMmxextFilterCodeSize)) < 0) {
1672 ✗ av_log(c, AV_LOG_ERROR, "mprotect failed, cannot use fast bilinear scaler\n");
1673 ✗ goto fail;
1674 }
1675 } else
1676 #endif /* HAVE_MMXEXT_INLINE */
1677 {
1678
2/2
✓ Branch 0 taken 32923 times.
✓ Branch 1 taken 26017 times.
 58940 const int filterAlign = X86_MMX(cpu_flags) ? 4 :
1679 PPC_ALTIVEC(cpu_flags) ? 8 :
1680 have_neon(cpu_flags) ? 4 :
1681 have_lsx(cpu_flags) ? 8 :
1682 have_lasx(cpu_flags) ? 8 : 1;
1683
1684
1/2
✗ Branch 2 not taken.
✓ Branch 3 taken 58940 times.
 117880 if ((ret = initFilter(&c->hLumFilter, &c->hLumFilterPos,
1685 &c->hLumFilterSize, c->lumXInc,
1686 srcW, dstW, filterAlign, 1 << 14,
1687 lum_scaler, flags,
1688 cpu_flags, srcFilter->lumH, dstFilter->lumH,
1689 58940 sws->scaler_params,
1690 get_local_pos(c, 0, 0, 0),
1691 get_local_pos(c, 0, 0, 0))) < 0)
1692 ✗ goto fail;
1693
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 58940 times.
 58940 if (ff_shuffle_filter_coefficients(c, c->hLumFilterPos, c->hLumFilterSize, c->hLumFilter, dstW) < 0)
1694 ✗ goto nomem;
1695
1/2
✗ Branch 2 not taken.
✓ Branch 3 taken 58940 times.
 117880 if ((ret = initFilter(&c->hChrFilter, &c->hChrFilterPos,
1696 &c->hChrFilterSize, c->chrXInc,
1697 c->chrSrcW, c->chrDstW, filterAlign, 1 << 14,
1698 chr_scaler, flags,
1699 cpu_flags, srcFilter->chrH, dstFilter->chrH,
1700 58940 sws->scaler_params,
1701 get_local_pos(c, c->chrSrcHSubSample, sws->src_h_chr_pos, 0),
1702 get_local_pos(c, c->chrDstHSubSample, sws->dst_h_chr_pos, 0))) < 0)
1703 ✗ goto fail;
1704
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 58940 times.
 58940 if (ff_shuffle_filter_coefficients(c, c->hChrFilterPos, c->hChrFilterSize, c->hChrFilter, c->chrDstW) < 0)
1705 ✗ goto nomem;
1706 }
1707 } // initialize horizontal stuff
1708
1709 /* precalculate vertical scaler filter coefficients */
1710 {
1711
2/2
✓ Branch 0 taken 32923 times.
✓ Branch 1 taken 26017 times.
 58940 const int filterAlign = X86_MMX(cpu_flags) ? 2 :
1712 PPC_ALTIVEC(cpu_flags) ? 8 :
1713 have_neon(cpu_flags) ? 2 : 1;
1714
1715 58940 ret = initFilter(&c->vLumFilter, &c->vLumFilterPos, &c->vLumFilterSize,
1716 c->lumYInc, srcH, dstH, filterAlign, (1 << 12),
1717 lum_scaler, flags,
1718 cpu_flags, srcFilter->lumV, dstFilter->lumV,
1719 58940 sws->scaler_params,
1720 get_local_pos(c, 0, 0, 1),
1721 get_local_pos(c, 0, 0, 1));
1722 58940 int usecascade = (ret == RETCODE_USE_CASCADE);
1723
1/4
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✗ Branch 2 not taken.
✗ Branch 3 not taken.
 58940 if (ret < 0 && !usecascade)
1724 ✗ goto fail;
1725
1/2
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✓ Branch 3 taken 58940 times.
 117880 if ((ret = initFilter(&c->vChrFilter, &c->vChrFilterPos, &c->vChrFilterSize,
1726 c->chrYInc, c->chrSrcH, c->chrDstH,
1727 filterAlign, (1 << 12),
1728 chr_scaler, flags,
1729 cpu_flags, srcFilter->chrV, dstFilter->chrV,
1730 58940 sws->scaler_params,
1731 get_local_pos(c, c->chrSrcVSubSample, sws->src_v_chr_pos, 1),
1732 get_local_pos(c, c->chrDstVSubSample, sws->dst_v_chr_pos, 1))) < 0)
1733
1734 ✗ goto fail;
1735
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 58940 if (usecascade) {
1736 ✗ ret = RETCODE_USE_CASCADE;
1737 ✗ goto fail;
1738 }
1739
1740 #if HAVE_ALTIVEC
1741 ret = ff_sws_init_altivec_bufs(c);
1742 if (ret < 0)
1743 goto fail;
1744 #endif
1745 }
1746
1747
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 294700 for (i = 0; i < 4; i++)
1748
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 235760 if (!FF_ALLOCZ_TYPED_ARRAY(c->dither_error[i], sws->dst_w + 3))
1749 ✗ goto nomem;
1750
1751
4/4
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 58940 c->needAlpha = (CONFIG_SWSCALE_ALPHA && isALPHA(sws->src_format) && isALPHA(sws->dst_format)) ? 1 : 0;
1752
1753 // 64 / c->scalingBpp is the same as 16 / sizeof(scaling_intermediate)
1754 58940 c->uv_off = (dst_stride>>1) + 64 / (c->dstBpc &~ 7);
1755 58940 c->uv_offx2 = dst_stride + 16;
1756
1757
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 58940 av_assert0(c->chrDstH <= dstH);
1758
1759
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 58940 if (flags & SWS_PRINT_INFO) {
1760 2 const char *scaler = NULL, *cpucaps;
1761
1762
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 9 for (i = 0; i < FF_ARRAY_ELEMS(scale_algorithms); i++) {
1763
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 9 if (info_scaler == scale_algorithms[i].flag) {
1764 2 scaler = scale_algorithms[i].description;
1765 2 break;
1766 }
1767 }
1768
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 2 if (!scaler)
1769 ✗ scaler = "ehh flags invalid?!";
1770
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 4 av_log(c, AV_LOG_INFO, "%s scaler, from %s to %s%s ",
1771 scaler,
1772 av_get_pix_fmt_name(srcFormat),
1773
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 2 dstFormat == AV_PIX_FMT_BGR555 || dstFormat == AV_PIX_FMT_BGR565 ||
1774
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 2 dstFormat == AV_PIX_FMT_RGB444BE || dstFormat == AV_PIX_FMT_RGB444LE ||
1775
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 2 dstFormat == AV_PIX_FMT_BGR444BE || dstFormat == AV_PIX_FMT_BGR444LE ?
1776 "dithered " : "",
1777 av_get_pix_fmt_name(dstFormat));
1778
1779
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 2 if (INLINE_MMXEXT(cpu_flags))
1780 2 cpucaps = "MMXEXT";
1781 ✗ else if (INLINE_MMX(cpu_flags))
1782 ✗ cpucaps = "MMX";
1783 else if (PPC_ALTIVEC(cpu_flags))
1784 cpucaps = "AltiVec";
1785 else
1786 ✗ cpucaps = "C";
1787
1788 2 av_log(c, AV_LOG_INFO, "using %s\n", cpucaps);
1789
1790 2 av_log(c, AV_LOG_VERBOSE, "%dx%d -> %dx%d\n", srcW, srcH, dstW, dstH);
1791 2 av_log(c, AV_LOG_DEBUG,
1792 "lum srcW=%d srcH=%d dstW=%d dstH=%d xInc=%d yInc=%d\n",
1793 sws->src_w, sws->src_h, sws->dst_w, sws->dst_h, c->lumXInc, c->lumYInc);
1794 2 av_log(c, AV_LOG_DEBUG,
1795 "chr srcW=%d srcH=%d dstW=%d dstH=%d xInc=%d yInc=%d\n",
1796 c->chrSrcW, c->chrSrcH, c->chrDstW, c->chrDstH,
1797 c->chrXInc, c->chrYInc);
1798 }
1799
1800 58940 ff_sws_init_scale(c);
1801
1802 58940 return ff_init_filters(c);
1803 ✗ nomem:
1804 ✗ ret = AVERROR(ENOMEM);
1805 ✗ fail: // FIXME replace things by appropriate error codes
1806 ✗ if (ret == RETCODE_USE_CASCADE) {
1807 ✗ int tmpW = sqrt(srcW * (int64_t)dstW);
1808 ✗ int tmpH = sqrt(srcH * (int64_t)dstH);
1809 ✗ enum AVPixelFormat tmpFormat = AV_PIX_FMT_YUV420P;
1810
1811 ✗ if (isALPHA(srcFormat))
1812 ✗ tmpFormat = AV_PIX_FMT_YUVA420P;
1813
1814 ✗ if (srcW*(int64_t)srcH <= 4LL*dstW*dstH)
1815 ✗ return AVERROR(EINVAL);
1816
1817 ✗ ret = av_image_alloc(c->cascaded_tmp[0], c->cascaded_tmpStride[0],
1818 tmpW, tmpH, tmpFormat, 64);
1819 ✗ if (ret < 0)
1820 ✗ return ret;
1821
1822 ✗ c->cascaded_context[0] = sws_getContext(srcW, srcH, srcFormat,
1823 tmpW, tmpH, tmpFormat,
1824 flags, srcFilter, NULL,
1825 ✗ sws->scaler_params);
1826 ✗ if (!c->cascaded_context[0])
1827 ✗ return AVERROR(ENOMEM);
1828
1829 ✗ c->cascaded_context[1] = sws_getContext(tmpW, tmpH, tmpFormat,
1830 dstW, dstH, dstFormat,
1831 flags, NULL, dstFilter,
1832 ✗ sws->scaler_params);
1833 ✗ if (!c->cascaded_context[1])
1834 ✗ return AVERROR(ENOMEM);
1835 ✗ return 0;
1836 }
1837 ✗ return ret;
1838 }
1839
1840 ✗ static int context_init_threaded(SwsContext *sws,
1841 SwsFilter *src_filter, SwsFilter *dst_filter)
1842 {
1843 ✗ SwsInternal *c = sws_internal(sws);
1844 int ret;
1845
1846 ✗ ret = avpriv_slicethread_create2(&c->slicethread, (void*) sws,
1847 ff_sws_slice_worker, NULL, sws->threads);
1848 ✗ if (ret == AVERROR(ENOSYS)) {
1849 ✗ sws->threads = 1;
1850 ✗ return 0;
1851 ✗ } else if (ret < 0)
1852 ✗ return ret;
1853
1854 ✗ sws->threads = ret;
1855
1856 ✗ c->slice_ctx = av_calloc(sws->threads, sizeof(*c->slice_ctx));
1857 ✗ if (!c->slice_ctx)
1858 ✗ return AVERROR(ENOMEM);
1859
1860 ✗ for (int i = 0; i < sws->threads; i++) {
1861 SwsContext *slice;
1862 ✗ slice = c->slice_ctx[i] = sws_alloc_context();
1863 ✗ if (!slice)
1864 ✗ return AVERROR(ENOMEM);
1865 ✗ sws_internal(slice)->parent = sws;
1866 ✗ c->nb_slice_ctx++;
1867
1868 ✗ ret = av_opt_copy(slice, sws);
1869 ✗ if (ret < 0)
1870 ✗ return ret;
1871 ✗ slice->threads = 1;
1872
1873 ✗ ret = ff_sws_init_single_context(slice, src_filter, dst_filter);
1874 ✗ if (ret < 0)
1875 ✗ return ret;
1876
1877 ✗ if (slice->dither == SWS_DITHER_ED) {
1878 ✗ av_log(c, AV_LOG_VERBOSE,
1879 "Error-diffusion dither is in use, scaling will be single-threaded.");
1880 ✗ break;
1881 }
1882 }
1883
1884 ✗ return 0;
1885 }
1886
1887 45688 av_cold int sws_init_context(SwsContext *sws, SwsFilter *srcFilter,
1888 SwsFilter *dstFilter)
1889 {
1890 45688 SwsInternal *c = sws_internal(sws);
1891 static AVOnce rgb2rgb_once = AV_ONCE_INIT;
1892 enum AVPixelFormat src_format, dst_format;
1893 int ret;
1894
1895 45688 c->is_legacy_init = 1;
1896 45688 c->frame_src = av_frame_alloc();
1897 45688 c->frame_dst = av_frame_alloc();
1898
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 45688 if (!c->frame_src || !c->frame_dst)
1899 ✗ return AVERROR(ENOMEM);
1900
1901
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 45688 if (ff_thread_once(&rgb2rgb_once, ff_sws_rgb2rgb_init) != 0)
1902 ✗ return AVERROR_UNKNOWN;
1903
1904 45688 src_format = sws->src_format;
1905 45688 dst_format = sws->dst_format;
1906 45688 sws->src_range |= handle_jpeg(&sws->src_format);
1907 45688 sws->dst_range |= handle_jpeg(&sws->dst_format);
1908
1909
4/4
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 45688 if (src_format != sws->src_format || dst_format != sws->dst_format)
1910 563 av_log(c, AV_LOG_WARNING, "deprecated pixel format used, make sure you did set range correctly\n");
1911
1912
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 45688 if (sws->threads != 1) {
1913 ✗ ret = context_init_threaded(sws, srcFilter, dstFilter);
1914 ✗ if (ret < 0 || sws->threads > 1)
1915 ✗ return ret;
1916 // threading disabled in this build, init as single-threaded
1917 }
1918
1919 45688 return ff_sws_init_single_context(sws, srcFilter, dstFilter);
1920 }
1921
1922 5740 SwsContext *sws_getContext(int srcW, int srcH, enum AVPixelFormat srcFormat,
1923 int dstW, int dstH, enum AVPixelFormat dstFormat,
1924 int flags, SwsFilter *srcFilter,
1925 SwsFilter *dstFilter, const double *param)
1926 {
1927 SwsContext *sws;
1928
1929 5740 sws = alloc_set_opts(srcW, srcH, srcFormat,
1930 dstW, dstH, dstFormat,
1931 flags, param);
1932
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 5740 if (!sws)
1933 ✗ return NULL;
1934
1935
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 5740 if (sws_init_context(sws, srcFilter, dstFilter) < 0) {
1936 ✗ sws_freeContext(sws);
1937 ✗ return NULL;
1938 }
1939
1940 5740 return sws;
1941 }
1942
1943 ✗ static int isnan_vec(SwsVector *a)
1944 {
1945 int i;
1946 ✗ for (i=0; i<a->length; i++)
1947 ✗ if (isnan(a->coeff[i]))
1948 ✗ return 1;
1949 ✗ return 0;
1950 }
1951
1952 ✗ static void makenan_vec(SwsVector *a)
1953 {
1954 int i;
1955 ✗ for (i=0; i<a->length; i++)
1956 ✗ a->coeff[i] = NAN;
1957 ✗ }
1958
1959 ✗ SwsVector *sws_allocVec(int length)
1960 {
1961 SwsVector *vec;
1962
1963 ✗ if(length <= 0 || length > INT_MAX/ sizeof(double))
1964 ✗ return NULL;
1965
1966 ✗ vec = av_malloc(sizeof(SwsVector));
1967 ✗ if (!vec)
1968 ✗ return NULL;
1969 ✗ vec->length = length;
1970 ✗ vec->coeff = av_malloc(sizeof(double) * length);
1971 ✗ if (!vec->coeff)
1972 ✗ av_freep(&vec);
1973 ✗ return vec;
1974 }
1975
1976 ✗ SwsVector *sws_getGaussianVec(double variance, double quality)
1977 {
1978 ✗ const int length = (int)(variance * quality + 0.5) | 1;
1979 int i;
1980 ✗ double middle = (length - 1) * 0.5;
1981 SwsVector *vec;
1982
1983 ✗ if(variance < 0 || quality < 0)
1984 ✗ return NULL;
1985
1986 ✗ vec = sws_allocVec(length);
1987
1988 ✗ if (!vec)
1989 ✗ return NULL;
1990
1991 ✗ for (i = 0; i < length; i++) {
1992 ✗ double dist = i - middle;
1993 ✗ vec->coeff[i] = exp(-dist * dist / (2 * variance * variance)) /
1994 ✗ sqrt(2 * variance * M_PI);
1995 }
1996
1997 ✗ sws_normalizeVec(vec, 1.0);
1998
1999 ✗ return vec;
2000 }
2001
2002 /**
2003 * Allocate and return a vector with length coefficients, all
2004 * with the same value c.
2005 */
2006 static
2007 ✗ SwsVector *sws_getConstVec(double c, int length)
2008 {
2009 int i;
2010 ✗ SwsVector *vec = sws_allocVec(length);
2011
2012 ✗ if (!vec)
2013 ✗ return NULL;
2014
2015 ✗ for (i = 0; i < length; i++)
2016 ✗ vec->coeff[i] = c;
2017
2018 ✗ return vec;
2019 }
2020
2021 /**
2022 * Allocate and return a vector with just one coefficient, with
2023 * value 1.0.
2024 */
2025 static
2026 ✗ SwsVector *sws_getIdentityVec(void)
2027 {
2028 ✗ return sws_getConstVec(1.0, 1);
2029 }
2030
2031 ✗ static double sws_dcVec(SwsVector *a)
2032 {
2033 int i;
2034 ✗ double sum = 0;
2035
2036 ✗ for (i = 0; i < a->length; i++)
2037 ✗ sum += a->coeff[i];
2038
2039 ✗ return sum;
2040 }
2041
2042 ✗ void sws_scaleVec(SwsVector *a, double scalar)
2043 {
2044 int i;
2045
2046 ✗ for (i = 0; i < a->length; i++)
2047 ✗ a->coeff[i] *= scalar;
2048 ✗ }
2049
2050 ✗ void sws_normalizeVec(SwsVector *a, double height)
2051 {
2052 ✗ sws_scaleVec(a, height / sws_dcVec(a));
2053 ✗ }
2054
2055 ✗ static SwsVector *sws_sumVec(SwsVector *a, SwsVector *b)
2056 {
2057 ✗ int length = FFMAX(a->length, b->length);
2058 int i;
2059 ✗ SwsVector *vec = sws_getConstVec(0.0, length);
2060
2061 ✗ if (!vec)
2062 ✗ return NULL;
2063
2064 ✗ for (i = 0; i < a->length; i++)
2065 ✗ vec->coeff[i + (length - 1) / 2 - (a->length - 1) / 2] += a->coeff[i];
2066 ✗ for (i = 0; i < b->length; i++)
2067 ✗ vec->coeff[i + (length - 1) / 2 - (b->length - 1) / 2] += b->coeff[i];
2068
2069 ✗ return vec;
2070 }
2071
2072 /* shift left / or right if "shift" is negative */
2073 ✗ static SwsVector *sws_getShiftedVec(SwsVector *a, int shift)
2074 {
2075 ✗ int length = a->length + FFABS(shift) * 2;
2076 int i;
2077 ✗ SwsVector *vec = sws_getConstVec(0.0, length);
2078
2079 ✗ if (!vec)
2080 ✗ return NULL;
2081
2082 ✗ for (i = 0; i < a->length; i++) {
2083 ✗ vec->coeff[i + (length - 1) / 2 -
2084 ✗ (a->length - 1) / 2 - shift] = a->coeff[i];
2085 }
2086
2087 ✗ return vec;
2088 }
2089
2090 static
2091 ✗ void sws_shiftVec(SwsVector *a, int shift)
2092 {
2093 ✗ SwsVector *shifted = sws_getShiftedVec(a, shift);
2094 ✗ if (!shifted) {
2095 ✗ makenan_vec(a);
2096 ✗ return;
2097 }
2098 ✗ av_free(a->coeff);
2099 ✗ a->coeff = shifted->coeff;
2100 ✗ a->length = shifted->length;
2101 ✗ av_free(shifted);
2102 }
2103
2104 static
2105 ✗ void sws_addVec(SwsVector *a, SwsVector *b)
2106 {
2107 ✗ SwsVector *sum = sws_sumVec(a, b);
2108 ✗ if (!sum) {
2109 ✗ makenan_vec(a);
2110 ✗ return;
2111 }
2112 ✗ av_free(a->coeff);
2113 ✗ a->coeff = sum->coeff;
2114 ✗ a->length = sum->length;
2115 ✗ av_free(sum);
2116 }
2117
2118 /**
2119 * Print with av_log() a textual representation of the vector a
2120 * if log_level <= av_log_level.
2121 */
2122 static
2123 ✗ void sws_printVec2(SwsVector *a, AVClass *log_ctx, int log_level)
2124 {
2125 int i;
2126 ✗ double max = 0;
2127 ✗ double min = 0;
2128 double range;
2129
2130 ✗ for (i = 0; i < a->length; i++)
2131 ✗ if (a->coeff[i] > max)
2132 ✗ max = a->coeff[i];
2133
2134 ✗ for (i = 0; i < a->length; i++)
2135 ✗ if (a->coeff[i] < min)
2136 ✗ min = a->coeff[i];
2137
2138 ✗ range = max - min;
2139
2140 ✗ for (i = 0; i < a->length; i++) {
2141 ✗ int x = (int)((a->coeff[i] - min) * 60.0 / range + 0.5);
2142 ✗ av_log(log_ctx, log_level, "%1.3f ", a->coeff[i]);
2143 ✗ for (; x > 0; x--)
2144 ✗ av_log(log_ctx, log_level, " ");
2145 ✗ av_log(log_ctx, log_level, "|\n");
2146 }
2147 ✗ }
2148
2149 ✗ void sws_freeVec(SwsVector *a)
2150 {
2151 ✗ if (!a)
2152 ✗ return;
2153 ✗ av_freep(&a->coeff);
2154 ✗ a->length = 0;
2155 ✗ av_free(a);
2156 }
2157
2158 ✗ void sws_freeFilter(SwsFilter *filter)
2159 {
2160 ✗ if (!filter)
2161 ✗ return;
2162
2163 ✗ sws_freeVec(filter->lumH);
2164 ✗ sws_freeVec(filter->lumV);
2165 ✗ sws_freeVec(filter->chrH);
2166 ✗ sws_freeVec(filter->chrV);
2167 ✗ av_free(filter);
2168 }
2169
2170 ✗ SwsFilter *sws_getDefaultFilter(float lumaGBlur, float chromaGBlur,
2171 float lumaSharpen, float chromaSharpen,
2172 float chromaHShift, float chromaVShift,
2173 int verbose)
2174 {
2175 ✗ SwsFilter *filter = av_malloc(sizeof(SwsFilter));
2176 ✗ if (!filter)
2177 ✗ return NULL;
2178
2179 ✗ if (lumaGBlur != 0.0) {
2180 ✗ filter->lumH = sws_getGaussianVec(lumaGBlur, 3.0);
2181 ✗ filter->lumV = sws_getGaussianVec(lumaGBlur, 3.0);
2182 } else {
2183 ✗ filter->lumH = sws_getIdentityVec();
2184 ✗ filter->lumV = sws_getIdentityVec();
2185 }
2186
2187 ✗ if (chromaGBlur != 0.0) {
2188 ✗ filter->chrH = sws_getGaussianVec(chromaGBlur, 3.0);
2189 ✗ filter->chrV = sws_getGaussianVec(chromaGBlur, 3.0);
2190 } else {
2191 ✗ filter->chrH = sws_getIdentityVec();
2192 ✗ filter->chrV = sws_getIdentityVec();
2193 }
2194
2195 ✗ if (!filter->lumH || !filter->lumV || !filter->chrH || !filter->chrV)
2196 ✗ goto fail;
2197
2198 ✗ if (chromaSharpen != 0.0) {
2199 ✗ SwsVector *id = sws_getIdentityVec();
2200 ✗ if (!id)
2201 ✗ goto fail;
2202 ✗ sws_scaleVec(filter->chrH, -chromaSharpen);
2203 ✗ sws_scaleVec(filter->chrV, -chromaSharpen);
2204 ✗ sws_addVec(filter->chrH, id);
2205 ✗ sws_addVec(filter->chrV, id);
2206 ✗ sws_freeVec(id);
2207 }
2208
2209 ✗ if (lumaSharpen != 0.0) {
2210 ✗ SwsVector *id = sws_getIdentityVec();
2211 ✗ if (!id)
2212 ✗ goto fail;
2213 ✗ sws_scaleVec(filter->lumH, -lumaSharpen);
2214 ✗ sws_scaleVec(filter->lumV, -lumaSharpen);
2215 ✗ sws_addVec(filter->lumH, id);
2216 ✗ sws_addVec(filter->lumV, id);
2217 ✗ sws_freeVec(id);
2218 }
2219
2220 ✗ if (chromaHShift != 0.0)
2221 ✗ sws_shiftVec(filter->chrH, (int)(chromaHShift + 0.5));
2222
2223 ✗ if (chromaVShift != 0.0)
2224 ✗ sws_shiftVec(filter->chrV, (int)(chromaVShift + 0.5));
2225
2226 ✗ sws_normalizeVec(filter->chrH, 1.0);
2227 ✗ sws_normalizeVec(filter->chrV, 1.0);
2228 ✗ sws_normalizeVec(filter->lumH, 1.0);
2229 ✗ sws_normalizeVec(filter->lumV, 1.0);
2230
2231 ✗ if (isnan_vec(filter->chrH) ||
2232 ✗ isnan_vec(filter->chrV) ||
2233 ✗ isnan_vec(filter->lumH) ||
2234 ✗ isnan_vec(filter->lumV))
2235 ✗ goto fail;
2236
2237 ✗ if (verbose)
2238 ✗ sws_printVec2(filter->chrH, NULL, AV_LOG_DEBUG);
2239 ✗ if (verbose)
2240 ✗ sws_printVec2(filter->lumH, NULL, AV_LOG_DEBUG);
2241
2242 ✗ return filter;
2243
2244 ✗ fail:
2245 ✗ sws_freeVec(filter->lumH);
2246 ✗ sws_freeVec(filter->lumV);
2247 ✗ sws_freeVec(filter->chrH);
2248 ✗ sws_freeVec(filter->chrV);
2249 ✗ av_freep(&filter);
2250 ✗ return NULL;
2251 }
2252
2253 356533 void sws_freeContext(SwsContext *sws)
2254 {
2255 356533 SwsInternal *c = sws_internal(sws);
2256 int i;
2257
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 356533 if (!c)
2258 267400 return;
2259
2260 89133 av_refstruct_unref(&c->hw_priv);
2261
2262
2/2
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 267399 for (i = 0; i < FF_ARRAY_ELEMS(c->graph); i++)
2263 178266 ff_sws_graph_free(&c->graph[i]);
2264 89133 ff_frame_pool_uninit(&c->frame_pool);
2265
2266
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 112324 for (i = 0; i < c->nb_slice_ctx; i++)
2267 23191 sws_freeContext(c->slice_ctx[i]);
2268 89133 av_freep(&c->slice_ctx);
2269
2270 89133 avpriv_slicethread_free(&c->slicethread);
2271
2272
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 445665 for (i = 0; i < 4; i++)
2273 356532 av_freep(&c->dither_error[i]);
2274
2275 89133 av_frame_free(&c->frame_src);
2276 89133 av_frame_free(&c->frame_dst);
2277
2278 89133 av_freep(&c->src_ranges.ranges);
2279
2280 89133 av_freep(&c->vLumFilter);
2281 89133 av_freep(&c->vChrFilter);
2282 89133 av_freep(&c->hLumFilter);
2283 89133 av_freep(&c->hChrFilter);
2284 #if HAVE_ALTIVEC
2285 ff_sws_free_altivec_bufs(c);
2286 #endif
2287
2288 89133 av_freep(&c->vLumFilterPos);
2289 89133 av_freep(&c->vChrFilterPos);
2290 89133 av_freep(&c->hLumFilterPos);
2291 89133 av_freep(&c->hChrFilterPos);
2292
2293 #if HAVE_MMX_INLINE
2294 89133 ff_sws_jit_free(c->lumMmxextFilterCode, c->lumMmxextFilterCodeSize);
2295 89133 ff_sws_jit_free(c->chrMmxextFilterCode, c->chrMmxextFilterCodeSize);
2296 89133 c->lumMmxextFilterCode = NULL;
2297 89133 c->chrMmxextFilterCode = NULL;
2298 #endif /* HAVE_MMX_INLINE */
2299
2300 89133 av_freep(&c->yuvTable);
2301 89133 av_freep(&c->formatConvBuffer);
2302
2303 89133 sws_freeContext(c->cascaded_context[0]);
2304 89133 sws_freeContext(c->cascaded_context[1]);
2305 89133 sws_freeContext(c->cascaded_context[2]);
2306 89133 memset(c->cascaded_context, 0, sizeof(c->cascaded_context));
2307 89133 av_freep(&c->cascaded_tmp[0][0]);
2308 89133 av_freep(&c->cascaded_tmp[1][0]);
2309
2310 89133 av_freep(&c->gamma);
2311 89133 av_freep(&c->inv_gamma);
2312 #if CONFIG_SMALL
2313 av_freep(&c->xyz2rgb.gamma.in);
2314 #endif
2315
2316 89133 av_freep(&c->rgb0_scratch);
2317 89133 av_freep(&c->xyz_scratch);
2318
2319 89133 ff_free_filters(c);
2320
2321 89133 av_free(c);
2322 }
2323
2324 59768 void sws_free_context(SwsContext **pctx)
2325 {
2326 59768 SwsContext *ctx = *pctx;
2327
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 59768 if (!ctx)
2328 ✗ return;
2329
2330 59768 sws_freeContext(ctx);
2331 59768 *pctx = NULL;
2332 }
2333
2334 ✗ SwsContext *sws_getCachedContext(SwsContext *prev, int srcW,
2335 int srcH, enum AVPixelFormat srcFormat,
2336 int dstW, int dstH,
2337 enum AVPixelFormat dstFormat, int flags,
2338 SwsFilter *srcFilter,
2339 SwsFilter *dstFilter,
2340 const double *param)
2341 {
2342 SwsContext *sws;
2343 static const double default_param[2] = { SWS_PARAM_DEFAULT,
2344 SWS_PARAM_DEFAULT };
2345
2346 ✗ if (!param)
2347 ✗ param = default_param;
2348
2349 ✗ if (prev && (prev->src_w == srcW &&
2350 ✗ prev->src_h == srcH &&
2351 ✗ prev->src_format == srcFormat &&
2352 ✗ prev->dst_w == dstW &&
2353 ✗ prev->dst_h == dstH &&
2354 ✗ prev->dst_format == dstFormat &&
2355 ✗ prev->flags == flags &&
2356 ✗ !memcmp(prev->scaler_params, param,
2357 sizeof(prev->scaler_params)))) {
2358 ✗ return prev;
2359 }
2360
2361 ✗ if (!(sws = sws_alloc_context())) {
2362 ✗ sws_free_context(&prev);
2363 ✗ return NULL;
2364 }
2365
2366 ✗ if (prev) {
2367 ✗ av_opt_copy(sws, prev);
2368 ✗ sws_free_context(&prev);
2369 }
2370
2371 ✗ sws->src_w = srcW;
2372 ✗ sws->src_h = srcH;
2373 ✗ sws->src_format = srcFormat;
2374 ✗ sws->dst_w = dstW;
2375 ✗ sws->dst_h = dstH;
2376 ✗ sws->dst_format = dstFormat;
2377 ✗ sws->flags = flags;
2378 ✗ for (int i = 0; i < SWS_NUM_SCALER_PARAMS; i++)
2379 ✗ sws->scaler_params[i] = param[i];
2380
2381 ✗ if (sws_init_context(sws, srcFilter, dstFilter) < 0)
2382 ✗ sws_free_context(&sws);
2383
2384 ✗ return sws;
2385 }
2386
2387 ✗ int ff_range_add(RangeList *rl, unsigned int start, unsigned int len)
2388 {
2389 Range *tmp;
2390 unsigned int idx;
2391
2392 /* find the first existing range after the new one */
2393 ✗ for (idx = 0; idx < rl->nb_ranges; idx++)
2394 ✗ if (rl->ranges[idx].start > start)
2395 ✗ break;
2396
2397 /* check for overlap */
2398 ✗ if (idx > 0) {
2399 ✗ Range *prev = &rl->ranges[idx - 1];
2400 ✗ if (prev->start + prev->len > start)
2401 ✗ return AVERROR(EINVAL);
2402 }
2403 ✗ if (idx < rl->nb_ranges) {
2404 ✗ Range *next = &rl->ranges[idx];
2405 ✗ if (start + len > next->start)
2406 ✗ return AVERROR(EINVAL);
2407 }
2408
2409 ✗ tmp = av_fast_realloc(rl->ranges, &rl->ranges_allocated,
2410 ✗ (rl->nb_ranges + 1) * sizeof(*rl->ranges));
2411 ✗ if (!tmp)
2412 ✗ return AVERROR(ENOMEM);
2413 ✗ rl->ranges = tmp;
2414
2415 ✗ memmove(rl->ranges + idx + 1, rl->ranges + idx,
2416 ✗ sizeof(*rl->ranges) * (rl->nb_ranges - idx));
2417 ✗ rl->ranges[idx].start = start;
2418 ✗ rl->ranges[idx].len = len;
2419 ✗ rl->nb_ranges++;
2420
2421 /* merge ranges */
2422 ✗ if (idx > 0) {
2423 ✗ Range *prev = &rl->ranges[idx - 1];
2424 ✗ Range *cur = &rl->ranges[idx];
2425 ✗ if (prev->start + prev->len == cur->start) {
2426 ✗ prev->len += cur->len;
2427 ✗ memmove(rl->ranges + idx - 1, rl->ranges + idx,
2428 ✗ sizeof(*rl->ranges) * (rl->nb_ranges - idx));
2429 ✗ rl->nb_ranges--;
2430 ✗ idx--;
2431 }
2432 }
2433 ✗ if (idx < rl->nb_ranges - 1) {
2434 ✗ Range *cur = &rl->ranges[idx];
2435 ✗ Range *next = &rl->ranges[idx + 1];
2436 ✗ if (cur->start + cur->len == next->start) {
2437 ✗ cur->len += next->len;
2438 ✗ memmove(rl->ranges + idx, rl->ranges + idx + 1,
2439 ✗ sizeof(*rl->ranges) * (rl->nb_ranges - idx - 1));
2440 ✗ rl->nb_ranges--;
2441 }
2442 }
2443
2444 ✗ return 0;
2445 }
2446
2447 8 int ff_sws_thread_exec(void *priv,
2448 int (*func)(void *priv, int jobnr, int threadnr, int nb_jobs, int nb_threads),
2449 int nb_threads, int nb_jobs)
2450 {
2451 AVSliceThread *slicethread;
2452 8 int ret = avpriv_slicethread_create2(&slicethread, priv, func, NULL, nb_threads);
2453
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 8 if (ret == AVERROR(ENOSYS)) {
2454 /* Fallback for build configurations without threading */
2455 ✗ for (int i = 0; i < nb_jobs; i++) {
2456 ✗ int ret = func(priv, i, 0, nb_jobs, 1);
2457 ✗ if (ret)
2458 ✗ return ret;
2459 }
2460 ✗ return 0;
2461
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 8 } else if (ret < 0) {
2462 ✗ return ret;
2463 }
2464
2465 8 ret = avpriv_slicethread_execute2(slicethread, nb_jobs, 0);
2466 8 avpriv_slicethread_free(&slicethread);
2467 8 return ret;
2468 }
2469