FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libswscale/utils.c
Date: 2026-07-19 06:51:48
Exec Total Coverage
Lines: 741 1373 54.0%
Functions: 23 45 51.1%
Branches: 629 1230 51.1%
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/asm.h"
48 #include "libavutil/x86/cpu.h"
49 #include "libavutil/loongarch/cpu.h"
50
51 #include "rgb2rgb.h"
52 #include "swscale.h"
53 #include "swscale_internal.h"
54 #include "graph.h"
55 #include "jit.h"
56
57 #if CONFIG_VULKAN
58 #include "vulkan/ops.h"
59 #endif
60
61 462294 SwsBackend ff_sws_enabled_backends(const SwsContext *ctx)
62 {
63
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 462294 if (ctx->backends)
64 350093 return ctx->backends;
65
66 112201 SwsBackend fallback = SWS_BACKEND_STABLE;
67
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 112201 if (ctx->flags & SWS_UNSTABLE)
68 ✗ fallback |= SWS_BACKEND_UNSTABLE;
69
70 112201 return fallback;
71 }
72
73 /**
74 * Allocate and return an SwsContext without performing initialization.
75 */
76 5742 static SwsContext *alloc_set_opts(int srcW, int srcH, enum AVPixelFormat srcFormat,
77 int dstW, int dstH, enum AVPixelFormat dstFormat,
78 int flags, const double *param)
79 {
80 5742 SwsContext *sws = sws_alloc_context();
81
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 5742 if (!sws)
82 ✗ return NULL;
83
84 5742 sws->flags = flags;
85 5742 sws->src_w = srcW;
86 5742 sws->src_h = srcH;
87 5742 sws->dst_w = dstW;
88 5742 sws->dst_h = dstH;
89 5742 sws->src_format = srcFormat;
90 5742 sws->dst_format = dstFormat;
91
92
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 5746 for (int i = 0; param && i < SWS_NUM_SCALER_PARAMS; i++)
93 4 sws->scaler_params[i] = param[i];
94
95 5742 return sws;
96 }
97
98 118880 int ff_shuffle_filter_coefficients(SwsInternal *c, int *filterPos,
99 int filterSize, int16_t *filter,
100 int dstW)
101 {
102 #if ARCH_X86_64
103 int i, j, k;
104 118880 int cpu_flags = av_get_cpu_flags();
105
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 118880 if (!filter)
106 ✗ return 0;
107
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 118880 if (EXTERNAL_AVX2_FAST(cpu_flags) && !(cpu_flags & AV_CPU_FLAG_SLOW_GATHER)) {
108 ✗ if ((c->srcBpc == 8) && (c->dstBpc <= 14)) {
109 ✗ int16_t *filterCopy = NULL;
110 ✗ if (filterSize > 4) {
111 ✗ filterCopy = av_malloc_array(dstW, filterSize * sizeof(*filterCopy));
112 ✗ if (!filterCopy)
113 ✗ return AVERROR(ENOMEM);
114 ✗ memcpy(filterCopy, filter, dstW * filterSize * sizeof(int16_t));
115 }
116 // Do not swap filterPos for pixels which won't be processed by
117 // the main loop.
118 ✗ for (i = 0; i + 16 <= dstW; i += 16) {
119 ✗ FFSWAP(int, filterPos[i + 2], filterPos[i + 4]);
120 ✗ FFSWAP(int, filterPos[i + 3], filterPos[i + 5]);
121 ✗ FFSWAP(int, filterPos[i + 10], filterPos[i + 12]);
122 ✗ FFSWAP(int, filterPos[i + 11], filterPos[i + 13]);
123 }
124 ✗ if (filterSize > 4) {
125 // 16 pixels are processed at a time.
126 ✗ for (i = 0; i + 16 <= dstW; i += 16) {
127 // 4 filter coeffs are processed at a time.
128 ✗ for (k = 0; k + 4 <= filterSize; k += 4) {
129 ✗ for (j = 0; j < 16; ++j) {
130 ✗ int from = (i + j) * filterSize + k;
131 ✗ int to = i * filterSize + j * 4 + k * 16;
132 ✗ memcpy(&filter[to], &filterCopy[from], 4 * sizeof(int16_t));
133 }
134 }
135 }
136 // 4 pixels are processed at a time in the tail.
137 ✗ for (; i < dstW; i += 4) {
138 // 4 filter coeffs are processed at a time.
139 ✗ int rem = dstW - i >= 4 ? 4 : dstW - i;
140 ✗ for (k = 0; k + 4 <= filterSize; k += 4) {
141 ✗ for (j = 0; j < rem; ++j) {
142 ✗ int from = (i + j) * filterSize + k;
143 ✗ int to = i * filterSize + j * 4 + k * 4;
144 ✗ memcpy(&filter[to], &filterCopy[from], 4 * sizeof(int16_t));
145 }
146 }
147 }
148 }
149 ✗ av_free(filterCopy);
150 }
151 }
152 #endif
153 118880 return 0;
154 }
155
156 ✗ static double getSplineCoeff(double a, double b, double c, double d,
157 double dist)
158 {
159 ✗ if (dist <= 1.0)
160 ✗ return ((d * dist + c) * dist + b) * dist + a;
161 else
162 ✗ return getSplineCoeff(0.0,
163 ✗ b + 2.0 * c + 3.0 * d,
164 ✗ c + 3.0 * d,
165 ✗ -b - 3.0 * c - 6.0 * d,
166 dist - 1.0);
167 }
168
169 471488 static av_cold int get_local_pos(SwsInternal *s, int chr_subsample, int pos, int dir)
170 {
171
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 471488 if (pos == -1 || pos <= -513) {
172 210631 pos = (128 << chr_subsample) - 128;
173 }
174 471488 pos += 128; // relative to ideal left edge
175 471488 return pos >> chr_subsample;
176 }
177
178 typedef struct {
179 int flag; ///< flag associated to the algorithm
180 const char *description; ///< human-readable description
181 int size_factor; ///< size factor used when initing the filters
182 } ScaleAlgorithm;
183
184 static const ScaleAlgorithm scale_algorithms[] = {
185 { SWS_AREA, "area averaging", 1 /* downscale only, for upscale it is bilinear */ },
186 { SWS_BICUBIC, "bicubic", 4 },
187 { SWS_BICUBLIN, "luma bicubic / chroma bilinear", -1 },
188 { SWS_BILINEAR, "bilinear", 2 },
189 { SWS_FAST_BILINEAR, "fast bilinear", -1 },
190 { SWS_GAUSS, "Gaussian", 8 /* infinite ;) */ },
191 { SWS_LANCZOS, "Lanczos", -1 /* custom */ },
192 { SWS_POINT, "nearest neighbor / point", -1 },
193 { SWS_SINC, "sinc", 20 /* infinite ;) */ },
194 { SWS_SPLINE, "bicubic spline", 20 /* infinite :)*/ },
195 { SWS_X, "experimental", 8 },
196 };
197
198 235744 static av_cold int initFilter(int16_t **outFilter, int32_t **filterPos,
199 int *outFilterSize, int xInc, int srcW,
200 int dstW, int filterAlign, int one,
201 int scaler, int flags, int cpu_flags,
202 SwsVector *srcFilter, SwsVector *dstFilter,
203 double param[SWS_NUM_SCALER_PARAMS], int srcPos, int dstPos)
204 {
205 int i;
206 int filterSize;
207 int filter2Size;
208 int minFilterSize;
209 235744 int64_t *filter = NULL;
210 235744 int64_t *filter2 = NULL;
211 235744 const int64_t fone = 1LL << (54 - FFMIN(av_log2(srcW/dstW), 8));
212 235744 int ret = -1;
213
214 235744 emms_c(); // FIXME should not be required but IS (even for non-MMX versions)
215
216 // NOTE: the +3 is for the MMX(+1) / SSE(+3) scaler which reads over the end
217
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 235744 if (!FF_ALLOC_TYPED_ARRAY(*filterPos, dstW + 3))
218 ✗ goto nomem;
219
220
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 392466 if (FFABS(xInc - 0x10000) < 10 && srcPos == dstPos) { // unscaled
221 int i;
222 156722 filterSize = 1;
223
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 156722 if (!FF_ALLOCZ_TYPED_ARRAY(filter, dstW * filterSize))
224 ✗ goto nomem;
225
226
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 39761703 for (i = 0; i < dstW; i++) {
227 39604981 filter[i * filterSize] = fone;
228 39604981 (*filterPos)[i] = i;
229 }
230
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 79022 } else if (scaler == SWS_POINT) { // lame looking point sampling mode
231 int i;
232 int64_t xDstInSrc;
233 301 filterSize = 1;
234
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 301 if (!FF_ALLOC_TYPED_ARRAY(filter, dstW * filterSize))
235 ✗ goto nomem;
236
237 301 xDstInSrc = ((dstPos*(int64_t)xInc)>>8) - ((srcPos*0x8000LL)>>7);
238
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 87392 for (i = 0; i < dstW; i++) {
239 87091 int xx = (xDstInSrc - ((filterSize - 1) << 15) + (1 << 15)) >> 16;
240
241 87091 (*filterPos)[i] = xx;
242 87091 filter[i] = fone;
243 87091 xDstInSrc += xInc;
244 }
245
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 78721 } else if ((xInc <= (1 << 16) && (scaler == SWS_AREA)) ||
246 88 (scaler == SWS_FAST_BILINEAR)) { // bilinear upscale
247 int i;
248 int64_t xDstInSrc;
249 88 filterSize = 2;
250
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 88 if (!FF_ALLOC_TYPED_ARRAY(filter, dstW * filterSize))
251 ✗ goto nomem;
252
253 88 xDstInSrc = ((dstPos*(int64_t)xInc)>>8) - ((srcPos*0x8000LL)>>7);
254
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 157324 for (i = 0; i < dstW; i++) {
255 157236 int xx = (xDstInSrc - ((filterSize - 1) << 15) + (1 << 15)) >> 16;
256 int j;
257
258 157236 (*filterPos)[i] = xx;
259 // bilinear upscale / linear interpolate / area averaging
260
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 471708 for (j = 0; j < filterSize; j++) {
261 314472 int64_t coeff = fone - FFABS((int64_t)xx * (1 << 16) - xDstInSrc) * (fone >> 16);
262
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 314472 if (coeff < 0)
263 ✗ coeff = 0;
264 314472 filter[i * filterSize + j] = coeff;
265 314472 xx++;
266 }
267 157236 xDstInSrc += xInc;
268 }
269 } else {
270 int64_t xDstInSrc;
271 78633 int sizeFactor = -1;
272
273
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 265998 for (i = 0; i < FF_ARRAY_ELEMS(scale_algorithms); i++) {
274
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 265998 if (scaler == scale_algorithms[i].flag && scale_algorithms[i].size_factor > 0) {
275 78633 sizeFactor = scale_algorithms[i].size_factor;
276 78633 break;
277 }
278 }
279
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 78633 if (scaler == SWS_LANCZOS)
280 ✗ sizeFactor = param[0] != SWS_PARAM_DEFAULT ? ceil(2 * param[0]) : 6;
281
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 78633 av_assert0(sizeFactor > 0);
282
283
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 78633 if (sizeFactor > 50) {
284 ✗ ret = AVERROR(EINVAL);
285 ✗ goto fail;
286 }
287
288
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 78633 if (xInc <= 1 << 16)
289 42306 filterSize = 1 + sizeFactor; // upscale
290 else
291 36327 filterSize = 1 + (sizeFactor * srcW + dstW - 1) / dstW;
292
293
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 78633 filterSize = FFMIN(filterSize, srcW - 2);
294 78633 filterSize = FFMAX(filterSize, 1);
295
296 78633 filter = av_malloc_array(dstW, filterSize * sizeof(*filter));
297
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 78633 if (!filter)
298 ✗ goto nomem;
299 78633 xDstInSrc = ((dstPos*(int64_t)xInc)>>7) - ((srcPos*0x10000LL)>>7);
300
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 13585605 for (i = 0; i < dstW; i++) {
301 13506972 int xx = (xDstInSrc - (filterSize - 2) * (1LL<<16)) / (1 << 17);
302 int j;
303 13506972 (*filterPos)[i] = xx;
304
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 79623156 for (j = 0; j < filterSize; j++) {
305 66116184 int64_t d = (FFABS(((int64_t)xx * (1 << 17)) - xDstInSrc)) << 13;
306 double floatd;
307 int64_t coeff;
308
309
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 66116184 if (xInc > 1 << 16)
310 23938193 d = d * dstW / srcW;
311 66116184 floatd = d * (1.0 / (1 << 30));
312
313
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 66116184 if (scaler == SWS_BICUBIC) {
314
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 47252037 int64_t B = (param[0] != SWS_PARAM_DEFAULT ? param[0] : 0) * (1 << 24);
315
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 47252037 int64_t C = (param[1] != SWS_PARAM_DEFAULT ? param[1] : 0.6) * (1 << 24);
316
317
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 47252037 if (d >= 1LL << 31) {
318 8397115 coeff = 0.0;
319 } else {
320 38854922 int64_t dd = (d * d) >> 30;
321 38854922 int64_t ddd = (dd * d) >> 30;
322
323
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 38854922 if (d < 1LL << 30)
324 19444352 coeff = (12 * (1 << 24) - 9 * B - 6 * C) * ddd +
325 19444352 (-18 * (1 << 24) + 12 * B + 6 * C) * dd +
326 19444352 (6 * (1 << 24) - 2 * B) * (1 << 30);
327 else
328 19410570 coeff = (-B - 6 * C) * ddd +
329 19410570 (6 * B + 30 * C) * dd +
330 19410570 (-12 * B - 48 * C) * d +
331 19410570 (8 * B + 24 * C) * (1 << 30);
332 }
333 47252037 coeff /= (1LL<<54)/fone;
334
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 18864147 } else if (scaler == SWS_X) {
335 ✗ double A = param[0] != SWS_PARAM_DEFAULT ? param[0] : 1.0;
336 double c;
337
338 ✗ if (floatd < 1.0)
339 ✗ c = cos(floatd * M_PI);
340 else
341 ✗ c = -1.0;
342 ✗ if (c < 0.0)
343 ✗ c = -pow(-c, A);
344 else
345 ✗ c = pow(c, A);
346 ✗ coeff = (c * 0.5 + 0.5) * fone;
347
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 18864147 } else if (scaler == SWS_AREA) {
348 288927 int64_t d2 = d - (1 << 29);
349
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 288927 if (d2 * xInc < -(1LL << (29 + 16)))
350 218924 coeff = 1.0 * (1LL << (30 + 16));
351
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 70003 else if (d2 * xInc < (1LL << (29 + 16)))
352 60908 coeff = -d2 * xInc + (1LL << (29 + 16));
353 else
354 9095 coeff = 0.0;
355 288927 coeff *= fone >> (30 + 16);
356
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 18575220 } else if (scaler == SWS_GAUSS) {
357 ✗ double p = param[0] != SWS_PARAM_DEFAULT ? param[0] : 3.0;
358 ✗ coeff = exp2(-p * floatd * floatd) * fone;
359
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 18575220 } else if (scaler == SWS_SINC) {
360 ✗ coeff = (d ? sin(floatd * M_PI) / (floatd * M_PI) : 1.0) * fone;
361
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 18575220 } else if (scaler == SWS_LANCZOS) {
362 ✗ double p = param[0] != SWS_PARAM_DEFAULT ? param[0] : 3.0;
363 ✗ coeff = (d ? sin(floatd * M_PI) * sin(floatd * M_PI / p) /
364 ✗ (floatd * floatd * M_PI * M_PI / p) : 1.0) * fone;
365 ✗ if (floatd > p)
366 ✗ coeff = 0;
367
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 18575220 } else if (scaler == SWS_BILINEAR) {
368 18575220 coeff = (1 << 30) - d;
369
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 18575220 if (coeff < 0)
370 6159680 coeff = 0;
371 18575220 coeff *= fone >> 30;
372 ✗ } else if (scaler == SWS_SPLINE) {
373 ✗ double p = -2.196152422706632;
374 ✗ coeff = getSplineCoeff(1.0, 0.0, p, -p - 1.0, floatd) * fone;
375 } else {
376 ✗ av_assert0(0);
377 }
378
379 66116184 filter[i * filterSize + j] = coeff;
380 66116184 xx++;
381 }
382 13506972 xDstInSrc += 2LL * xInc;
383 }
384 }
385
386 /* apply src & dst Filter to filter -> filter2
387 * av_free(filter);
388 */
389
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 235744 av_assert0(filterSize > 0);
390 235744 filter2Size = filterSize;
391
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 235744 if (srcFilter)
392 ✗ filter2Size += srcFilter->length - 1;
393
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 235744 if (dstFilter)
394 ✗ filter2Size += dstFilter->length - 1;
395
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 235744 av_assert0(filter2Size > 0);
396 235744 filter2 = av_calloc(dstW, filter2Size * sizeof(*filter2));
397
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 235744 if (!filter2)
398 ✗ goto nomem;
399
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 53592024 for (i = 0; i < dstW; i++) {
400 int j, k;
401
402
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 53356280 if (srcFilter) {
403 ✗ for (k = 0; k < srcFilter->length; k++) {
404 ✗ for (j = 0; j < filterSize; j++)
405 ✗ filter2[i * filter2Size + k + j] +=
406 ✗ srcFilter->coeff[k] * filter[i * filterSize + j];
407 }
408 } else {
409
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 159479008 for (j = 0; j < filterSize; j++)
410 106122728 filter2[i * filter2Size + j] = filter[i * filterSize + j];
411 }
412 // FIXME dstFilter
413
414 53356280 (*filterPos)[i] += (filterSize - 1) / 2 - (filter2Size - 1) / 2;
415 }
416 235744 av_freep(&filter);
417
418 /* try to reduce the filter-size (step1 find size and shift left) */
419 // Assume it is near normalized (*0.5 or *2.0 is OK but * 0.001 is not).
420 235744 minFilterSize = 0;
421
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 53592024 for (i = dstW - 1; i >= 0; i--) {
422 53356280 int min = filter2Size;
423 int j;
424 53356280 int64_t cutOff = 0.0;
425
426 /* get rid of near zero elements on the left by shifting left */
427
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 59568921 for (j = 0; j < filter2Size; j++) {
428 int k;
429 59568921 cutOff += FFABS(filter2[i * filter2Size]);
430
431
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 59568921 if (cutOff > SWS_MAX_REDUCE_CUTOFF * fone)
432 53353459 break;
433
434 /* preserve monotonicity because the core can't handle the
435 * filter otherwise */
436
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 6215462 if (i < dstW - 1 && (*filterPos)[i] >= (*filterPos)[i + 1])
437 2821 break;
438
439 // move filter coefficients left
440
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 28485718 for (k = 1; k < filter2Size; k++)
441 22273077 filter2[i * filter2Size + k - 1] = filter2[i * filter2Size + k];
442 6212641 filter2[i * filter2Size + k - 1] = 0;
443 6212641 (*filterPos)[i]++;
444 }
445
446 53356280 cutOff = 0;
447 /* count near zeros on the right */
448
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 67988042 for (j = filter2Size - 1; j > 0; j--) {
449 28261352 cutOff += FFABS(filter2[i * filter2Size + j]);
450
451
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 28261352 if (cutOff > SWS_MAX_REDUCE_CUTOFF * fone)
452 13629590 break;
453 14631762 min--;
454 }
455
456
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 53356280 if (min > minFilterSize)
457 236452 minFilterSize = min;
458 }
459
460 if (PPC_ALTIVEC(cpu_flags)) {
461 // we can handle the special case 4, so we don't want to go the full 8
462 if (minFilterSize < 5)
463 filterAlign = 4;
464
465 /* We really don't want to waste our time doing useless computation, so
466 * fall back on the scalar C code for very small filters.
467 * Vectorizing is worth it only if you have a decent-sized vector. */
468 if (minFilterSize < 3)
469 filterAlign = 1;
470 }
471
472
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 235744 if (HAVE_MMX && cpu_flags & AV_CPU_FLAG_MMX || have_neon(cpu_flags)) {
473 // special case for unscaled vertical filtering
474
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 131684 if (minFilterSize == 1 && filterAlign == 2)
475 37720 filterAlign = 1;
476 }
477
478 if (have_lasx(cpu_flags) || have_lsx(cpu_flags)) {
479 int reNum = minFilterSize & (0x07);
480
481 if (minFilterSize < 5)
482 filterAlign = 4;
483 if (reNum < 3)
484 filterAlign = 1;
485 }
486
487
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 235744 av_assert0(minFilterSize > 0);
488 235744 filterSize = (minFilterSize + (filterAlign - 1)) & (~(filterAlign - 1));
489
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 235744 av_assert0(filterSize > 0);
490 235744 filter = av_malloc_array(dstW, filterSize * sizeof(*filter));
491
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 235744 if (!filter)
492 ✗ goto nomem;
493
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 235744 if (filterSize >= MAX_FILTER_SIZE * 16 /
494
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 235744 ((flags & SWS_ACCURATE_RND) ? APCK_SIZE : 16)) {
495 ✗ ret = RETCODE_USE_CASCADE;
496 ✗ goto fail;
497 }
498 235744 *outFilterSize = filterSize;
499
500
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 235744 if (flags & SWS_PRINT_INFO)
501 ✗ av_log(NULL, AV_LOG_VERBOSE,
502 "SwScaler: reducing / aligning filtersize %d -> %d\n",
503 filter2Size, filterSize);
504 /* try to reduce the filter-size (step2 reduce it) */
505
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 53592024 for (i = 0; i < dstW; i++) {
506 int j;
507
508
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 176868265 for (j = 0; j < filterSize; j++) {
509
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 123511985 if (j >= filter2Size)
510 27063074 filter[i * filterSize + j] = 0;
511 else
512 96448911 filter[i * filterSize + j] = filter2[i * filter2Size + j];
513
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 123511985 if ((flags & SWS_BITEXACT) && j >= minFilterSize)
514 25532160 filter[i * filterSize + j] = 0;
515 }
516 }
517
518 // FIXME try to align filterPos if possible
519
520 // fix borders
521
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 53592024 for (i = 0; i < dstW; i++) {
522 int j;
523
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 53356280 if ((*filterPos)[i] < 0) {
524 // move filter coefficients left to compensate for filterPos
525
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 279373 for (j = 1; j < filterSize; j++) {
526 230816 int left = FFMAX(j + (*filterPos)[i], 0);
527 230816 filter[i * filterSize + left] += filter[i * filterSize + j];
528 230816 filter[i * filterSize + j] = 0;
529 }
530 48557 (*filterPos)[i]= 0;
531 }
532
533
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 53356280 if ((*filterPos)[i] + filterSize > srcW) {
534 301721 int shift = (*filterPos)[i] + FFMIN(filterSize - srcW, 0);
535 301721 int64_t acc = 0;
536
537
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 1569082 for (j = filterSize - 1; j >= 0; j--) {
538
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 1267361 if ((*filterPos)[i] + j >= srcW) {
539 522915 acc += filter[i * filterSize + j];
540 522915 filter[i * filterSize + j] = 0;
541 }
542 }
543
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 1569082 for (j = filterSize - 1; j >= 0; j--) {
544
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 1267361 if (j < shift) {
545 522915 filter[i * filterSize + j] = 0;
546 } else {
547 744446 filter[i * filterSize + j] = filter[i * filterSize + j - shift];
548 }
549 }
550
551 301721 (*filterPos)[i]-= shift;
552 301721 filter[i * filterSize + srcW - 1 - (*filterPos)[i]] += acc;
553 }
554
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 53356280 av_assert0((*filterPos)[i] >= 0);
555
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 53356280 av_assert0((*filterPos)[i] < srcW);
556
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 53356280 if ((*filterPos)[i] + filterSize > srcW) {
557 ✗ for (j = 0; j < filterSize; j++) {
558 ✗ av_assert0((*filterPos)[i] + j < srcW || !filter[i * filterSize + j]);
559 }
560 }
561 }
562
563 // Note the +1 is for the MMX scaler which reads over the end
564 /* align at 16 for AltiVec (needed by hScale_altivec_real) */
565 235744 *outFilter = av_calloc(dstW + 3, *outFilterSize * sizeof(**outFilter));
566
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 235744 if (!*outFilter)
567 ✗ goto nomem;
568
569 /* normalize & store in outFilter */
570
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 53592024 for (i = 0; i < dstW; i++) {
571 int j;
572 53356280 int64_t error = 0;
573 53356280 int64_t sum = 0;
574
575
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 176868265 for (j = 0; j < filterSize; j++) {
576 123511985 sum += filter[i * filterSize + j];
577 }
578 53356280 sum = (sum + one / 2) / one;
579
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 53356280 if (!sum) {
580 ✗ av_log(NULL, AV_LOG_WARNING, "SwScaler: zero vector in scaling\n");
581 ✗ sum = 1;
582 }
583
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 176868265 for (j = 0; j < *outFilterSize; j++) {
584 123511985 int64_t v = filter[i * filterSize + j] + error;
585
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 123511985 int intV = ROUNDED_DIV(v, sum);
586 123511985 (*outFilter)[i * (*outFilterSize) + j] = intV;
587 123511985 error = v - intV * sum;
588 }
589 }
590
591 235744 (*filterPos)[dstW + 0] =
592 235744 (*filterPos)[dstW + 1] =
593 235744 (*filterPos)[dstW + 2] = (*filterPos)[dstW - 1]; /* the MMX/SSE scaler will
594 * read over the end */
595
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 837930 for (i = 0; i < *outFilterSize; i++) {
596 602186 int k = (dstW - 1) * (*outFilterSize) + i;
597 602186 (*outFilter)[k + 1 * (*outFilterSize)] =
598 602186 (*outFilter)[k + 2 * (*outFilterSize)] =
599 602186 (*outFilter)[k + 3 * (*outFilterSize)] = (*outFilter)[k];
600 }
601
602 235744 ret = 0;
603 235744 goto done;
604 ✗ nomem:
605 ✗ ret = AVERROR(ENOMEM);
606 ✗ fail:
607 ✗ if(ret < 0)
608 ✗ av_log(NULL, ret == RETCODE_USE_CASCADE ? AV_LOG_DEBUG : AV_LOG_ERROR, "sws: initFilter failed\n");
609 ✗ done:
610 235744 av_free(filter);
611 235744 av_free(filter2);
612 235744 return ret;
613 }
614
615 39756 static void fill_rgb2yuv_table(SwsInternal *c, const int table[4], int dstRange)
616 {
617 int64_t W, V, Z, Cy, Cu, Cv;
618 39756 int64_t vr = table[0];
619 39756 int64_t ub = table[1];
620 39756 int64_t ug = -table[2];
621 39756 int64_t vg = -table[3];
622 39756 int64_t ONE = 65536;
623 39756 int64_t cy = ONE;
624 39756 uint8_t *p = (uint8_t*)c->input_rgb2yuv_table;
625 int i;
626 static const int8_t map[] = {
627 BY_IDX, GY_IDX, -1 , BY_IDX, BY_IDX, GY_IDX, -1 , BY_IDX,
628 RY_IDX, -1 , GY_IDX, RY_IDX, RY_IDX, -1 , GY_IDX, RY_IDX,
629 RY_IDX, GY_IDX, -1 , RY_IDX, RY_IDX, GY_IDX, -1 , RY_IDX,
630 BY_IDX, -1 , GY_IDX, BY_IDX, BY_IDX, -1 , GY_IDX, BY_IDX,
631 BU_IDX, GU_IDX, -1 , BU_IDX, BU_IDX, GU_IDX, -1 , BU_IDX,
632 RU_IDX, -1 , GU_IDX, RU_IDX, RU_IDX, -1 , GU_IDX, RU_IDX,
633 RU_IDX, GU_IDX, -1 , RU_IDX, RU_IDX, GU_IDX, -1 , RU_IDX,
634 BU_IDX, -1 , GU_IDX, BU_IDX, BU_IDX, -1 , GU_IDX, BU_IDX,
635 BV_IDX, GV_IDX, -1 , BV_IDX, BV_IDX, GV_IDX, -1 , BV_IDX,
636 RV_IDX, -1 , GV_IDX, RV_IDX, RV_IDX, -1 , GV_IDX, RV_IDX,
637 RV_IDX, GV_IDX, -1 , RV_IDX, RV_IDX, GV_IDX, -1 , RV_IDX,
638 BV_IDX, -1 , GV_IDX, BV_IDX, BV_IDX, -1 , GV_IDX, BV_IDX,
639 RY_IDX, BY_IDX, RY_IDX, BY_IDX, RY_IDX, BY_IDX, RY_IDX, BY_IDX,
640 BY_IDX, RY_IDX, BY_IDX, RY_IDX, BY_IDX, RY_IDX, BY_IDX, RY_IDX,
641 GY_IDX, -1 , GY_IDX, -1 , GY_IDX, -1 , GY_IDX, -1 ,
642 -1 , GY_IDX, -1 , GY_IDX, -1 , GY_IDX, -1 , GY_IDX,
643 RU_IDX, BU_IDX, RU_IDX, BU_IDX, RU_IDX, BU_IDX, RU_IDX, BU_IDX,
644 BU_IDX, RU_IDX, BU_IDX, RU_IDX, BU_IDX, RU_IDX, BU_IDX, RU_IDX,
645 GU_IDX, -1 , GU_IDX, -1 , GU_IDX, -1 , GU_IDX, -1 ,
646 -1 , GU_IDX, -1 , GU_IDX, -1 , GU_IDX, -1 , GU_IDX,
647 RV_IDX, BV_IDX, RV_IDX, BV_IDX, RV_IDX, BV_IDX, RV_IDX, BV_IDX,
648 BV_IDX, RV_IDX, BV_IDX, RV_IDX, BV_IDX, RV_IDX, BV_IDX, RV_IDX,
649 GV_IDX, -1 , GV_IDX, -1 , GV_IDX, -1 , GV_IDX, -1 ,
650 -1 , GV_IDX, -1 , GV_IDX, -1 , GV_IDX, -1 , GV_IDX, //23
651 -1 , -1 , -1 , -1 , -1 , -1 , -1 , -1 , //24
652 -1 , -1 , -1 , -1 , -1 , -1 , -1 , -1 , //25
653 -1 , -1 , -1 , -1 , -1 , -1 , -1 , -1 , //26
654 -1 , -1 , -1 , -1 , -1 , -1 , -1 , -1 , //27
655 -1 , -1 , -1 , -1 , -1 , -1 , -1 , -1 , //28
656 -1 , -1 , -1 , -1 , -1 , -1 , -1 , -1 , //29
657 -1 , -1 , -1 , -1 , -1 , -1 , -1 , -1 , //30
658 -1 , -1 , -1 , -1 , -1 , -1 , -1 , -1 , //31
659 BY_IDX, GY_IDX, RY_IDX, -1 , -1 , -1 , -1 , -1 , //32
660 BU_IDX, GU_IDX, RU_IDX, -1 , -1 , -1 , -1 , -1 , //33
661 BV_IDX, GV_IDX, RV_IDX, -1 , -1 , -1 , -1 , -1 , //34
662 };
663
664 39756 dstRange = 0; //FIXME range = 1 is handled elsewhere
665
666
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 39756 if (!dstRange) {
667 39756 cy = cy * 255 / 219;
668 } else {
669 ✗ vr = vr * 224 / 255;
670 ✗ ub = ub * 224 / 255;
671 ✗ ug = ug * 224 / 255;
672 ✗ vg = vg * 224 / 255;
673 }
674
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 39756 W = ROUNDED_DIV(ONE*ONE*ug, ub);
675
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 39756 V = ROUNDED_DIV(ONE*ONE*vg, vr);
676 39756 Z = ONE*ONE-W-V;
677
678
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 39756 Cy = ROUNDED_DIV(cy*Z, ONE);
679
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 39756 Cu = ROUNDED_DIV(ub*Z, ONE);
680
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 39756 Cv = ROUNDED_DIV(vr*Z, ONE);
681
682
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 39756 c->input_rgb2yuv_table[RY_IDX] = -ROUNDED_DIV((1 << RGB2YUV_SHIFT)*V , Cy);
683 39756 c->input_rgb2yuv_table[GY_IDX] = ROUNDED_DIV((1 << RGB2YUV_SHIFT)*ONE*ONE , Cy);
684
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 39756 c->input_rgb2yuv_table[BY_IDX] = -ROUNDED_DIV((1 << RGB2YUV_SHIFT)*W , Cy);
685
686
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 39756 c->input_rgb2yuv_table[RU_IDX] = ROUNDED_DIV((1 << RGB2YUV_SHIFT)*V , Cu);
687 39756 c->input_rgb2yuv_table[GU_IDX] = -ROUNDED_DIV((1 << RGB2YUV_SHIFT)*ONE*ONE , Cu);
688
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 39756 c->input_rgb2yuv_table[BU_IDX] = ROUNDED_DIV((1 << RGB2YUV_SHIFT)*(Z+W) , Cu);
689
690
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 39756 c->input_rgb2yuv_table[RV_IDX] = ROUNDED_DIV((1 << RGB2YUV_SHIFT)*(V+Z) , Cv);
691 39756 c->input_rgb2yuv_table[GV_IDX] = -ROUNDED_DIV((1 << RGB2YUV_SHIFT)*ONE*ONE , Cv);
692
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 39756 c->input_rgb2yuv_table[BV_IDX] = ROUNDED_DIV((1 << RGB2YUV_SHIFT)*W , Cv);
693
694
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 39756 if(/*!dstRange && */!memcmp(table, ff_yuv2rgb_coeffs[SWS_CS_DEFAULT], sizeof(ff_yuv2rgb_coeffs[SWS_CS_DEFAULT]))) {
695 39756 c->input_rgb2yuv_table[BY_IDX] = ((int)(0.114 * 219 / 255 * (1 << RGB2YUV_SHIFT) + 0.5));
696 39756 c->input_rgb2yuv_table[BV_IDX] = (-(int)(0.081 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5));
697 39756 c->input_rgb2yuv_table[BU_IDX] = ((int)(0.500 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5));
698 39756 c->input_rgb2yuv_table[GY_IDX] = ((int)(0.587 * 219 / 255 * (1 << RGB2YUV_SHIFT) + 0.5));
699 39756 c->input_rgb2yuv_table[GV_IDX] = (-(int)(0.419 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5));
700 39756 c->input_rgb2yuv_table[GU_IDX] = (-(int)(0.331 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5));
701 39756 c->input_rgb2yuv_table[RY_IDX] = ((int)(0.299 * 219 / 255 * (1 << RGB2YUV_SHIFT) + 0.5));
702 39756 c->input_rgb2yuv_table[RV_IDX] = ((int)(0.500 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5));
703 39756 c->input_rgb2yuv_table[RU_IDX] = (-(int)(0.169 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5));
704 }
705
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 11171436 for(i=0; i<FF_ARRAY_ELEMS(map); i++)
706
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 11131680 AV_WL16(p + 16*4 + 2*i, map[i] >= 0 ? c->input_rgb2yuv_table[map[i]] : 0);
707 39756 }
708
709 #if CONFIG_SMALL
710 static void init_xyz_tables(uint16_t xyzgamma_tab[4096], uint16_t xyzgammainv_tab[65536],
711 uint16_t rgbgamma_tab[65536], uint16_t rgbgammainv_tab[4096])
712 #else
713 static uint16_t xyzgamma_tab[4096], rgbgammainv_tab[4096];
714 static uint16_t rgbgamma_tab[65536], xyzgammainv_tab[65536];
715 38 static av_cold void init_xyz_tables(void)
716 #endif
717 {
718 38 double xyzgamma = XYZ_GAMMA;
719 38 double rgbgamma = 1.0 / RGB_GAMMA;
720 38 double xyzgammainv = 1.0 / XYZ_GAMMA;
721 38 double rgbgammainv = RGB_GAMMA;
722
723 /* set input gamma vectors */
724
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 155686 for (int i = 0; i < 4096; i++) {
725 155648 xyzgamma_tab[i] = lrint(pow(i / 4095.0, xyzgamma) * 65535.0);
726 155648 rgbgammainv_tab[i] = lrint(pow(i / 4095.0, rgbgammainv) * 65535.0);
727 }
728
729 /* set output gamma vectors */
730
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 2490406 for (int i = 0; i < 65536; i++) {
731 2490368 rgbgamma_tab[i] = lrint(pow(i / 65535.0, rgbgamma) * 4095.0);
732 2490368 xyzgammainv_tab[i] = lrint(pow(i / 65535.0, xyzgammainv) * 4095.0);
733 }
734 38 }
735
736 164 av_cold int ff_sws_fill_xyztables(SwsInternal *c)
737 {
738 static const int16_t xyz2rgb_matrix[3][3] = {
739 {13270, -6295, -2041},
740 {-3969, 7682, 170},
741 { 228, -835, 4329} };
742 static const int16_t rgb2xyz_matrix[3][3] = {
743 {1689, 1464, 739},
744 { 871, 2929, 296},
745 { 79, 488, 3891} };
746
747
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 164 if (c->xyz2rgb.gamma.in)
748 100 return 0;
749
750 64 memcpy(c->xyz2rgb.mat, xyz2rgb_matrix, sizeof(c->xyz2rgb.mat));
751 64 memcpy(c->rgb2xyz.mat, rgb2xyz_matrix, sizeof(c->rgb2xyz.mat));
752
753 #if CONFIG_SMALL
754 c->xyz2rgb.gamma.in = av_malloc(sizeof(uint16_t) * 2 * (4096 + 65536));
755 if (!c->xyz2rgb.gamma.in)
756 return AVERROR(ENOMEM);
757 c->rgb2xyz.gamma.in = c->xyz2rgb.gamma.in + 4096;
758 c->xyz2rgb.gamma.out = c->rgb2xyz.gamma.in + 4096;
759 c->rgb2xyz.gamma.out = c->xyz2rgb.gamma.out + 65536;
760 init_xyz_tables(c->xyz2rgb.gamma.in, c->rgb2xyz.gamma.out,
761 c->xyz2rgb.gamma.out, c->rgb2xyz.gamma.in);
762 #else
763 64 c->xyz2rgb.gamma.in = xyzgamma_tab;
764 64 c->xyz2rgb.gamma.out = rgbgamma_tab;
765 64 c->rgb2xyz.gamma.in = rgbgammainv_tab;
766 64 c->rgb2xyz.gamma.out = xyzgammainv_tab;
767
768 static AVOnce xyz_init_static_once = AV_ONCE_INIT;
769 64 ff_thread_once(&xyz_init_static_once, init_xyz_tables);
770 #endif
771 64 return 0;
772 }
773
774 91368 static int handle_jpeg(/* enum AVPixelFormat */ int *format)
775 {
776
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 91368 switch (*format) {
777 99 case AV_PIX_FMT_YUVJ420P:
778 99 *format = AV_PIX_FMT_YUV420P;
779 99 return 1;
780 16 case AV_PIX_FMT_YUVJ411P:
781 16 *format = AV_PIX_FMT_YUV411P;
782 16 return 1;
783 53 case AV_PIX_FMT_YUVJ422P:
784 53 *format = AV_PIX_FMT_YUV422P;
785 53 return 1;
786 356 case AV_PIX_FMT_YUVJ444P:
787 356 *format = AV_PIX_FMT_YUV444P;
788 356 return 1;
789 44 case AV_PIX_FMT_YUVJ440P:
790 44 *format = AV_PIX_FMT_YUV440P;
791 44 return 1;
792 4499 case AV_PIX_FMT_GRAY8:
793 case AV_PIX_FMT_YA8:
794 case AV_PIX_FMT_GRAY9LE:
795 case AV_PIX_FMT_GRAY9BE:
796 case AV_PIX_FMT_GRAY10LE:
797 case AV_PIX_FMT_GRAY10BE:
798 case AV_PIX_FMT_GRAY12LE:
799 case AV_PIX_FMT_GRAY12BE:
800 case AV_PIX_FMT_GRAY14LE:
801 case AV_PIX_FMT_GRAY14BE:
802 case AV_PIX_FMT_GRAY16LE:
803 case AV_PIX_FMT_GRAY16BE:
804 case AV_PIX_FMT_YA16BE:
805 case AV_PIX_FMT_YA16LE:
806 4499 return 1;
807 86301 default:
808 86301 return 0;
809 }
810 }
811
812 400902 static int handle_0alpha(/* enum AVPixelFormat */ int *format)
813 {
814
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 400902 switch (*format) {
815 309 case AV_PIX_FMT_0BGR : *format = AV_PIX_FMT_ABGR ; return 1;
816 346 case AV_PIX_FMT_BGR0 : *format = AV_PIX_FMT_BGRA ; return 4;
817 276 case AV_PIX_FMT_0RGB : *format = AV_PIX_FMT_ARGB ; return 1;
818 296 case AV_PIX_FMT_RGB0 : *format = AV_PIX_FMT_RGBA ; return 4;
819 399675 default: return 0;
820 }
821 }
822
823 400902 static int handle_xyz(/* enum AVPixelFormat */ int *format)
824 {
825
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 400902 switch (*format) {
826 14 case AV_PIX_FMT_XYZ12BE : *format = AV_PIX_FMT_RGB48BE; return 1;
827 38 case AV_PIX_FMT_XYZ12LE : *format = AV_PIX_FMT_RGB48LE; return 1;
828 400850 default: return 0;
829 }
830 }
831
832 200451 static int handle_formats(SwsContext *sws)
833 {
834 200451 SwsInternal *c = sws_internal(sws);
835 200451 c->src0Alpha |= handle_0alpha(&sws->src_format);
836 200451 c->dst0Alpha |= handle_0alpha(&sws->dst_format);
837 200451 c->srcXYZ |= handle_xyz(&sws->src_format);
838 200451 c->dstXYZ |= handle_xyz(&sws->dst_format);
839
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 200451 if (c->srcXYZ || c->dstXYZ)
840 150 return ff_sws_fill_xyztables(c);
841 else
842 200301 return 0;
843 }
844
845 342168 static int range_override_needed(enum AVPixelFormat format)
846 {
847
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 342168 return !isYUV(format) && !isGray(format);
848 }
849
850 131576 int sws_setColorspaceDetails(SwsContext *sws, const int inv_table[4],
851 int srcRange, const int table[4], int dstRange,
852 int brightness, int contrast, int saturation)
853 {
854 131576 SwsInternal *c = sws_internal(sws);
855 const AVPixFmtDescriptor *desc_dst;
856 const AVPixFmtDescriptor *desc_src;
857 131576 int ret, need_reinit = 0;
858
859
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 131576 if (c->nb_slice_ctx) {
860 ✗ int parent_ret = 0;
861 ✗ for (int i = 0; i < c->nb_slice_ctx; i++) {
862 ✗ int ret = sws_setColorspaceDetails(c->slice_ctx[i], inv_table,
863 srcRange, table, dstRange,
864 brightness, contrast, saturation);
865 ✗ if (ret < 0)
866 ✗ parent_ret = ret;
867 }
868
869 ✗ return parent_ret;
870 }
871
872 131576 ret = handle_formats(sws);
873
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 131576 if (ret < 0)
874 ✗ return ret;
875 131576 desc_dst = av_pix_fmt_desc_get(sws->dst_format);
876 131576 desc_src = av_pix_fmt_desc_get(sws->src_format);
877
878
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 131576 if(range_override_needed(sws->dst_format))
879 27101 dstRange = 0;
880
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 131576 if(range_override_needed(sws->src_format))
881 54559 srcRange = 0;
882
883
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 131576 if (sws->src_range != srcRange ||
884
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 112562 sws->dst_range != dstRange ||
885
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886
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887
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 62701 c->saturation != saturation ||
888
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 62701 memcmp(c->srcColorspaceTable, inv_table, sizeof(int) * 4) ||
889
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 62540 memcmp(c->dstColorspaceTable, table, sizeof(int) * 4)
890 )
891 69036 need_reinit = 1;
892
893 131576 memmove(c->srcColorspaceTable, inv_table, sizeof(int) * 4);
894 131576 memmove(c->dstColorspaceTable, table, sizeof(int) * 4);
895
896
897
898 131576 c->brightness = brightness;
899 131576 c->contrast = contrast;
900 131576 c->saturation = saturation;
901 131576 sws->src_range = srcRange;
902 131576 sws->dst_range = dstRange;
903
904
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 131576 if (need_reinit)
905 69036 ff_sws_init_range_convert(c);
906
907 131576 c->dstFormatBpp = av_get_bits_per_pixel(desc_dst);
908 131576 c->srcFormatBpp = av_get_bits_per_pixel(desc_src);
909
910
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 131576 if (c->cascaded_context[c->cascaded_mainindex])
911 ✗ return sws_setColorspaceDetails(c->cascaded_context[c->cascaded_mainindex],inv_table, srcRange,table, dstRange, brightness, contrast, saturation);
912
913
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 131576 if (!need_reinit)
914 62540 return 0;
915
916
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 69036 if ((isYUV(sws->dst_format) || isGray(sws->dst_format)) && (isYUV(sws->src_format) || isGray(sws->src_format))) {
917
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 29280 if (!c->cascaded_context[0] &&
918
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 29280 memcmp(c->dstColorspaceTable, c->srcColorspaceTable, sizeof(int) * 4) &&
919
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 1 sws->src_w && sws->src_h && sws->dst_w && sws->dst_h) {
920 enum AVPixelFormat tmp_format;
921 int tmp_width, tmp_height;
922 1 int srcW = sws->src_w;
923 1 int srcH = sws->src_h;
924 1 int dstW = sws->dst_w;
925 1 int dstH = sws->dst_h;
926 int ret;
927 1 av_log(c, AV_LOG_VERBOSE, "YUV color matrix differs for YUV->YUV, using intermediate RGB to convert\n");
928
929
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 1 if (isNBPS(sws->dst_format) || is16BPS(sws->dst_format)) {
930 ✗ if (isALPHA(sws->src_format) && isALPHA(sws->dst_format)) {
931 ✗ tmp_format = AV_PIX_FMT_BGRA64;
932 } else {
933 ✗ tmp_format = AV_PIX_FMT_BGR48;
934 }
935 } else {
936
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 1 if (isALPHA(sws->src_format) && isALPHA(sws->dst_format)) {
937 ✗ tmp_format = AV_PIX_FMT_BGRA;
938 } else {
939 1 tmp_format = AV_PIX_FMT_BGR24;
940 }
941 }
942
943
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 1 if (srcW*srcH > dstW*dstH) {
944 ✗ tmp_width = dstW;
945 ✗ tmp_height = dstH;
946 } else {
947 1 tmp_width = srcW;
948 1 tmp_height = srcH;
949 }
950
951 1 ret = av_image_alloc(c->cascaded_tmp[0], c->cascaded_tmpStride[0],
952 tmp_width, tmp_height, tmp_format, 64);
953
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 1 if (ret < 0)
954 ✗ return ret;
955
956 2 c->cascaded_context[0] = alloc_set_opts(srcW, srcH, sws->src_format,
957 tmp_width, tmp_height, tmp_format,
958 1 sws->flags, sws->scaler_params);
959
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 1 if (!c->cascaded_context[0])
960 ✗ return -1;
961
962 1 c->cascaded_context[0]->alpha_blend = sws->alpha_blend;
963 1 ret = sws_init_context(c->cascaded_context[0], NULL , NULL);
964
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 1 if (ret < 0)
965 ✗ return ret;
966 //we set both src and dst depending on that the RGB side will be ignored
967 1 sws_setColorspaceDetails(c->cascaded_context[0], inv_table,
968 srcRange, table, dstRange,
969 brightness, contrast, saturation);
970
971 2 c->cascaded_context[1] = alloc_set_opts(tmp_width, tmp_height, tmp_format,
972 1 dstW, dstH, sws->dst_format,
973 1 sws->flags, sws->scaler_params);
974
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 1 if (!c->cascaded_context[1])
975 ✗ return -1;
976 1 c->cascaded_context[1]->src_range = srcRange;
977 1 c->cascaded_context[1]->dst_range = dstRange;
978 1 ret = sws_init_context(c->cascaded_context[1], NULL , NULL);
979
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 1 if (ret < 0)
980 ✗ return ret;
981 1 sws_setColorspaceDetails(c->cascaded_context[1], inv_table,
982 srcRange, table, dstRange,
983 0, 1 << 16, 1 << 16);
984 1 return 0;
985 }
986 //We do not support this combination currently, we need to cascade more contexts to compensate
987
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 29279 if (c->cascaded_context[0] && memcmp(c->dstColorspaceTable, c->srcColorspaceTable, sizeof(int) * 4))
988 ✗ return -1; //AVERROR_PATCHWELCOME;
989 29279 return 0;
990 }
991
992
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 39756 if (!isYUV(sws->dst_format) && !isGray(sws->dst_format)) {
993 16364 ff_yuv2rgb_c_init_tables(c, inv_table, srcRange, brightness,
994 contrast, saturation);
995 // FIXME factorize
996
997 #if ARCH_PPC
998 ff_yuv2rgb_init_tables_ppc(c, inv_table, brightness,
999 contrast, saturation);
1000 #endif
1001 }
1002
1003 39756 fill_rgb2yuv_table(c, table, dstRange);
1004
1005 39756 return 0;
1006 }
1007
1008 39508 int sws_getColorspaceDetails(SwsContext *sws, int **inv_table,
1009 int *srcRange, int **table, int *dstRange,
1010 int *brightness, int *contrast, int *saturation)
1011 {
1012 39508 SwsInternal *c = sws_internal(sws);
1013
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 39508 if (!c)
1014 ✗ return -1;
1015
1016
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 39508 if (c->nb_slice_ctx) {
1017 ✗ return sws_getColorspaceDetails(c->slice_ctx[0], inv_table, srcRange,
1018 table, dstRange, brightness, contrast,
1019 saturation);
1020 }
1021
1022 39508 *inv_table = c->srcColorspaceTable;
1023 39508 *table = c->dstColorspaceTable;
1024
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 39508 *srcRange = range_override_needed(sws->src_format) ? 1 : sws->src_range;
1025
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 39508 *dstRange = range_override_needed(sws->dst_format) ? 1 : sws->dst_range;
1026 39508 *brightness = c->brightness;
1027 39508 *contrast = c->contrast;
1028 39508 *saturation = c->saturation;
1029
1030 39508 return 0;
1031 }
1032
1033 88993 SwsContext *sws_alloc_context(void)
1034 {
1035 88993 SwsInternal *c = av_mallocz(sizeof(*c) + SWSINTERNAL_ADDITIONAL_ASM_SIZE);
1036
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 88993 if (!c)
1037 ✗ return NULL;
1038
1039 88993 c->opts.av_class = &ff_sws_context_class;
1040 88993 av_opt_set_defaults(c);
1041 88993 atomic_init(&c->stride_unaligned_warned, 0);
1042 88993 atomic_init(&c->data_unaligned_warned, 0);
1043
1044 88993 return &c->opts;
1045 }
1046
1047 ✗ static uint16_t * alloc_gamma_tbl(double e)
1048 {
1049 ✗ int i = 0;
1050 uint16_t * tbl;
1051 ✗ tbl = (uint16_t*)av_malloc(sizeof(uint16_t) * 1 << 16);
1052 ✗ if (!tbl)
1053 ✗ return NULL;
1054
1055 ✗ for (i = 0; i < 65536; ++i) {
1056 ✗ tbl[i] = pow(i / 65535.0, e) * 65535.0;
1057 }
1058 ✗ return tbl;
1059 }
1060
1061 1873 static enum AVPixelFormat alphaless_fmt(enum AVPixelFormat fmt)
1062 {
1063
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 1873 switch(fmt) {
1064 12 case AV_PIX_FMT_ARGB: return AV_PIX_FMT_RGB24;
1065 12 case AV_PIX_FMT_RGBA: return AV_PIX_FMT_RGB24;
1066 2 case AV_PIX_FMT_ABGR: return AV_PIX_FMT_BGR24;
1067 220 case AV_PIX_FMT_BGRA: return AV_PIX_FMT_BGR24;
1068 20 case AV_PIX_FMT_YA8: return AV_PIX_FMT_GRAY8;
1069
1070 616 case AV_PIX_FMT_YUVA420P: return AV_PIX_FMT_YUV420P;
1071 3 case AV_PIX_FMT_YUVA422P: return AV_PIX_FMT_YUV422P;
1072 156 case AV_PIX_FMT_YUVA444P: return AV_PIX_FMT_YUV444P;
1073
1074 51 case AV_PIX_FMT_GBRAP: return AV_PIX_FMT_GBRP;
1075
1076 1 case AV_PIX_FMT_GBRAP10LE: return AV_PIX_FMT_GBRP10;
1077 ✗ case AV_PIX_FMT_GBRAP10BE: return AV_PIX_FMT_GBRP10;
1078
1079 1 case AV_PIX_FMT_GBRAP12LE: return AV_PIX_FMT_GBRP12;
1080 ✗ case AV_PIX_FMT_GBRAP12BE: return AV_PIX_FMT_GBRP12;
1081
1082 ✗ case AV_PIX_FMT_GBRAP14LE: return AV_PIX_FMT_GBRP14;
1083 ✗ case AV_PIX_FMT_GBRAP14BE: return AV_PIX_FMT_GBRP14;
1084
1085 1 case AV_PIX_FMT_GBRAP16LE: return AV_PIX_FMT_GBRP16;
1086 ✗ case AV_PIX_FMT_GBRAP16BE: return AV_PIX_FMT_GBRP16;
1087
1088 1 case AV_PIX_FMT_RGBA64LE: return AV_PIX_FMT_RGB48;
1089 10 case AV_PIX_FMT_RGBA64BE: return AV_PIX_FMT_RGB48;
1090 1 case AV_PIX_FMT_BGRA64LE: return AV_PIX_FMT_BGR48;
1091 ✗ case AV_PIX_FMT_BGRA64BE: return AV_PIX_FMT_BGR48;
1092
1093 10 case AV_PIX_FMT_YA16BE: return AV_PIX_FMT_GRAY16;
1094 ✗ case AV_PIX_FMT_YA16LE: return AV_PIX_FMT_GRAY16;
1095
1096 ✗ case AV_PIX_FMT_YUVA420P9BE: return AV_PIX_FMT_YUV420P9;
1097 ✗ case AV_PIX_FMT_YUVA422P9BE: return AV_PIX_FMT_YUV422P9;
1098 ✗ case AV_PIX_FMT_YUVA444P9BE: return AV_PIX_FMT_YUV444P9;
1099 ✗ case AV_PIX_FMT_YUVA420P9LE: return AV_PIX_FMT_YUV420P9;
1100 ✗ case AV_PIX_FMT_YUVA422P9LE: return AV_PIX_FMT_YUV422P9;
1101 ✗ case AV_PIX_FMT_YUVA444P9LE: return AV_PIX_FMT_YUV444P9;
1102 ✗ case AV_PIX_FMT_YUVA420P10BE: return AV_PIX_FMT_YUV420P10;
1103 ✗ case AV_PIX_FMT_YUVA422P10BE: return AV_PIX_FMT_YUV422P10;
1104 ✗ case AV_PIX_FMT_YUVA444P10BE: return AV_PIX_FMT_YUV444P10;
1105 ✗ case AV_PIX_FMT_YUVA420P10LE: return AV_PIX_FMT_YUV420P10;
1106 ✗ case AV_PIX_FMT_YUVA422P10LE: return AV_PIX_FMT_YUV422P10;
1107 ✗ case AV_PIX_FMT_YUVA444P10LE: return AV_PIX_FMT_YUV444P10;
1108 ✗ case AV_PIX_FMT_YUVA420P16BE: return AV_PIX_FMT_YUV420P16;
1109 ✗ case AV_PIX_FMT_YUVA422P16BE: return AV_PIX_FMT_YUV422P16;
1110 ✗ case AV_PIX_FMT_YUVA444P16BE: return AV_PIX_FMT_YUV444P16;
1111 ✗ case AV_PIX_FMT_YUVA420P16LE: return AV_PIX_FMT_YUV420P16;
1112 10 case AV_PIX_FMT_YUVA422P16LE: return AV_PIX_FMT_YUV422P16;
1113 4 case AV_PIX_FMT_YUVA444P16LE: return AV_PIX_FMT_YUV444P16;
1114
1115 // case AV_PIX_FMT_AYUV64LE:
1116 // case AV_PIX_FMT_AYUV64BE:
1117 // case AV_PIX_FMT_PAL8:
1118 742 default: return AV_PIX_FMT_NONE;
1119 }
1120 }
1121
1122 137750 static int scaler_flag(SwsScaler scaler, int fallback)
1123 {
1124
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 137750 switch (scaler) {
1125 ✗ case SWS_SCALE_BILINEAR: return SWS_BILINEAR; break;
1126 ✗ case SWS_SCALE_BICUBIC: return SWS_BICUBIC; break;
1127 ✗ case SWS_SCALE_POINT: return SWS_POINT; break;
1128 ✗ case SWS_SCALE_AREA: return SWS_AREA; break;
1129 ✗ case SWS_SCALE_GAUSSIAN: return SWS_GAUSS; break;
1130 ✗ case SWS_SCALE_SINC: return SWS_SINC; break;
1131 ✗ case SWS_SCALE_LANCZOS: return SWS_LANCZOS; break;
1132 ✗ case SWS_SCALE_SPLINE: return SWS_SPLINE; break;
1133 137750 default:
1134 137750 return fallback;
1135 }
1136 }
1137
1138 68875 av_cold int ff_sws_init_single_context(SwsContext *sws, SwsFilter *srcFilter,
1139 SwsFilter *dstFilter)
1140 {
1141 int i;
1142 int usesVFilter, usesHFilter;
1143 int unscaled;
1144 68875 SwsInternal *c = sws_internal(sws);
1145 68875 SwsFilter dummyFilter = { NULL, NULL, NULL, NULL };
1146 68875 int srcW = sws->src_w;
1147 68875 int srcH = sws->src_h;
1148 68875 int dstW = sws->dst_w;
1149 68875 int dstH = sws->dst_h;
1150 68875 int dst_stride = FFALIGN(dstW * sizeof(int16_t) + 66, 16);
1151 int flags, cpu_flags;
1152 enum AVPixelFormat srcFormat, dstFormat;
1153 const AVPixFmtDescriptor *desc_src;
1154 const AVPixFmtDescriptor *desc_dst;
1155 68875 int ret = 0;
1156 enum AVPixelFormat tmpFmt;
1157 static const float float_mult = 1.0f / 255.0f;
1158
1159 68875 cpu_flags = av_get_cpu_flags();
1160 68875 flags = sws->flags;
1161 68875 emms_c();
1162
1163
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 68875 unscaled = (srcW == dstW && srcH == dstH);
1164
1165
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 68875 if (!c->contrast && !c->saturation && !c->dstFormatBpp)
1166 68875 sws_setColorspaceDetails(sws, ff_yuv2rgb_coeffs[SWS_CS_DEFAULT], sws->src_range,
1167 ff_yuv2rgb_coeffs[SWS_CS_DEFAULT],
1168 sws->dst_range, 0, 1 << 16, 1 << 16);
1169
1170 68875 ret = handle_formats(sws);
1171
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 68875 if (ret < 0)
1172 ✗ return ret;
1173 68875 srcFormat = sws->src_format;
1174 68875 dstFormat = sws->dst_format;
1175 68875 desc_src = av_pix_fmt_desc_get(srcFormat);
1176 68875 desc_dst = av_pix_fmt_desc_get(dstFormat);
1177
1178 // If the source has no alpha then disable alpha blendaway
1179
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 68875 if (c->src0Alpha)
1180 1141 sws->alpha_blend = SWS_ALPHA_BLEND_NONE;
1181
1182
5/6
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 69416 if (!(unscaled && sws_isSupportedEndiannessConversion(srcFormat) &&
1183 541 av_pix_fmt_swap_endianness(srcFormat) == dstFormat)) {
1184
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 68875 if (!sws_isSupportedInput(srcFormat)) {
1185 ✗ av_log(c, AV_LOG_ERROR, "%s is not supported as input pixel format\n",
1186 av_get_pix_fmt_name(srcFormat));
1187 ✗ return AVERROR(EINVAL);
1188 }
1189
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 68875 if (!sws_isSupportedOutput(dstFormat)) {
1190 ✗ av_log(c, AV_LOG_ERROR, "%s is not supported as output pixel format\n",
1191 av_get_pix_fmt_name(dstFormat));
1192 ✗ return AVERROR(EINVAL);
1193 }
1194 }
1195 av_assert2(desc_src && desc_dst);
1196
1197 68875 i = flags & (SWS_POINT |
1198 SWS_AREA |
1199 SWS_BILINEAR |
1200 SWS_FAST_BILINEAR |
1201 SWS_BICUBIC |
1202 SWS_X |
1203 SWS_GAUSS |
1204 SWS_LANCZOS |
1205 SWS_SINC |
1206 SWS_SPLINE |
1207 SWS_BICUBLIN);
1208
1209 /* provide a default scaler if not set by caller */
1210
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 68875 if (!i) {
1211
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 5673 if (dstW < srcW && dstH < srcH)
1212 ✗ i = SWS_BICUBIC;
1213
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 5673 else if (dstW > srcW && dstH > srcH)
1214 ✗ i = SWS_BICUBIC;
1215 else
1216 5673 i = SWS_BICUBIC;
1217 5673 flags |= i;
1218 5673 sws->flags = flags;
1219
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 63202 } else if (i & (i - 1)) {
1220 ✗ av_log(c, AV_LOG_ERROR,
1221 "Exactly one scaler algorithm must be chosen, got %X\n", i);
1222 ✗ return AVERROR(EINVAL);
1223 }
1224
1225
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 68875 if (i == SWS_FAST_BILINEAR) {
1226 ✗ if (srcW < 8 || dstW <= 8) {
1227 ✗ i = SWS_BILINEAR;
1228 ✗ flags ^= SWS_FAST_BILINEAR | i;
1229 ✗ sws->flags = flags;
1230 }
1231 }
1232
1233
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 68875 SwsScaler scaler_sub = sws->scaler_sub ? sws->scaler_sub : sws->scaler;
1234
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 68875 int lum_scaler = scaler_flag(sws->scaler, i == SWS_BICUBLIN ? SWS_BICUBIC : i);
1235
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 68875 int chr_scaler = scaler_flag(scaler_sub, i == SWS_BICUBLIN ? SWS_BILINEAR : i);
1236
1237 /* sanity check */
1238
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 68875 if (srcW < 1 || srcH < 1 || dstW < 1 || dstH < 1) {
1239 /* FIXME check if these are enough and try to lower them after
1240 * fixing the relevant parts of the code */
1241 ✗ av_log(c, AV_LOG_ERROR, "%dx%d -> %dx%d is invalid scaling dimension\n",
1242 srcW, srcH, dstW, dstH);
1243 ✗ return AVERROR(EINVAL);
1244 }
1245
1246
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 68875 if (!dstFilter)
1247 68875 dstFilter = &dummyFilter;
1248
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 68875 if (!srcFilter)
1249 68875 srcFilter = &dummyFilter;
1250
1251 68875 int64_t lumXInc = (((int64_t)srcW << 16) + (dstW >> 1)) / dstW;
1252 68875 int64_t lumYInc = (((int64_t)srcH << 16) + (dstH >> 1)) / dstH;
1253 68875 c->dstFormatBpp = av_get_bits_per_pixel(desc_dst);
1254 68875 c->srcFormatBpp = av_get_bits_per_pixel(desc_src);
1255 68875 c->vRounder = 4 * 0x0001000100010001ULL;
1256
1257 ✗ usesVFilter = (srcFilter->lumV && srcFilter->lumV->length > 1) ||
1258
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 68875 (srcFilter->chrV && srcFilter->chrV->length > 1) ||
1259
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 206625 (dstFilter->lumV && dstFilter->lumV->length > 1) ||
1260
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 68875 (dstFilter->chrV && dstFilter->chrV->length > 1);
1261 ✗ usesHFilter = (srcFilter->lumH && srcFilter->lumH->length > 1) ||
1262
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 68875 (srcFilter->chrH && srcFilter->chrH->length > 1) ||
1263
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 206625 (dstFilter->lumH && dstFilter->lumH->length > 1) ||
1264
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 68875 (dstFilter->chrH && dstFilter->chrH->length > 1);
1265
1266 68875 av_pix_fmt_get_chroma_sub_sample(srcFormat, &c->chrSrcHSubSample, &c->chrSrcVSubSample);
1267 68875 av_pix_fmt_get_chroma_sub_sample(dstFormat, &c->chrDstHSubSample, &c->chrDstVSubSample);
1268
1269 68875 c->dst_slice_align = 1 << c->chrDstVSubSample;
1270
1271
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 68875 if (isAnyRGB(dstFormat) && !(flags&SWS_FULL_CHR_H_INT)) {
1272
2/2
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 9274 if (dstW&1) {
1273 49 av_log(c, AV_LOG_DEBUG, "Forcing full internal H chroma due to odd output size\n");
1274 49 flags |= SWS_FULL_CHR_H_INT;
1275 49 sws->flags = flags;
1276 }
1277
1278
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 9274 if ( c->chrSrcHSubSample == 0
1279
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 1492 && c->chrSrcVSubSample == 0
1280
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 1354 && sws->dither != SWS_DITHER_BAYER //SWS_FULL_CHR_H_INT is currently not supported with SWS_DITHER_BAYER
1281
1/2
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 1354 && !(sws->flags & SWS_FAST_BILINEAR)
1282 ) {
1283 1354 av_log(c, AV_LOG_DEBUG, "Forcing full internal H chroma due to input having non subsampled chroma\n");
1284 1354 flags |= SWS_FULL_CHR_H_INT;
1285 1354 sws->flags = flags;
1286 }
1287 }
1288
1289
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 68875 if (sws->dither == SWS_DITHER_AUTO) {
1290
1/2
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 57955 if (flags & SWS_ERROR_DIFFUSION)
1291 ✗ sws->dither = SWS_DITHER_ED;
1292 }
1293
1294
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 68875 if(dstFormat == AV_PIX_FMT_BGR4_BYTE ||
1295
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 68758 dstFormat == AV_PIX_FMT_RGB4_BYTE ||
1296
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 68683 dstFormat == AV_PIX_FMT_BGR8 ||
1297 dstFormat == AV_PIX_FMT_RGB8) {
1298
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 253 if (sws->dither == SWS_DITHER_AUTO)
1299
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 253 sws->dither = (flags & SWS_FULL_CHR_H_INT) ? SWS_DITHER_ED : SWS_DITHER_BAYER;
1300
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 253 if (!(flags & SWS_FULL_CHR_H_INT)) {
1301
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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) {
1302 ✗ av_log(c, AV_LOG_DEBUG,
1303 "Desired dithering only supported in full chroma interpolation for destination format '%s'\n",
1304 av_get_pix_fmt_name(dstFormat));
1305 ✗ flags |= SWS_FULL_CHR_H_INT;
1306 ✗ sws->flags = flags;
1307 }
1308 }
1309
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 253 if (flags & SWS_FULL_CHR_H_INT) {
1310
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 19 if (sws->dither == SWS_DITHER_BAYER) {
1311 ✗ av_log(c, AV_LOG_DEBUG,
1312 "Ordered dither is not supported in full chroma interpolation for destination format '%s'\n",
1313 av_get_pix_fmt_name(dstFormat));
1314 ✗ sws->dither = SWS_DITHER_ED;
1315 }
1316 }
1317 }
1318
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 68875 if (isPlanarRGB(dstFormat)) {
1319
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 5190 if (!(flags & SWS_FULL_CHR_H_INT)) {
1320 816 av_log(c, AV_LOG_DEBUG,
1321 "%s output is not supported with half chroma resolution, switching to full\n",
1322 av_get_pix_fmt_name(dstFormat));
1323 816 flags |= SWS_FULL_CHR_H_INT;
1324 816 sws->flags = flags;
1325 }
1326 }
1327
1328 /* reuse chroma for 2 pixels RGB/BGR unless user wants full
1329 * chroma interpolation */
1330
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 78128 if (flags & SWS_FULL_CHR_H_INT &&
1331
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 18506 isAnyRGB(dstFormat) &&
1332
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 13316 !isPlanarRGB(dstFormat) &&
1333
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 4059 dstFormat != AV_PIX_FMT_RGBA64LE &&
1334
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 4056 dstFormat != AV_PIX_FMT_RGBA64BE &&
1335
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 4052 dstFormat != AV_PIX_FMT_BGRA64LE &&
1336
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 4049 dstFormat != AV_PIX_FMT_BGRA64BE &&
1337
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 3293 dstFormat != AV_PIX_FMT_RGB48LE &&
1338
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 3288 dstFormat != AV_PIX_FMT_RGB48BE &&
1339
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 3284 dstFormat != AV_PIX_FMT_BGR48LE &&
1340
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 3281 dstFormat != AV_PIX_FMT_BGR48BE &&
1341
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 3204 dstFormat != AV_PIX_FMT_RGBA &&
1342
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 3186 dstFormat != AV_PIX_FMT_ARGB &&
1343
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 2642 dstFormat != AV_PIX_FMT_BGRA &&
1344
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 2634 dstFormat != AV_PIX_FMT_ABGR &&
1345
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 873 dstFormat != AV_PIX_FMT_RGB24 &&
1346
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 731 dstFormat != AV_PIX_FMT_BGR24 &&
1347
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 727 dstFormat != AV_PIX_FMT_BGR4_BYTE &&
1348
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 723 dstFormat != AV_PIX_FMT_RGB4_BYTE &&
1349
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 717 dstFormat != AV_PIX_FMT_BGR8 &&
1350
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 712 dstFormat != AV_PIX_FMT_RGB8 &&
1351
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 599 dstFormat != AV_PIX_FMT_X2RGB10LE &&
1352 dstFormat != AV_PIX_FMT_X2BGR10LE
1353 ) {
1354 486 av_log(c, AV_LOG_WARNING,
1355 "full chroma interpolation for destination format '%s' not yet implemented\n",
1356 av_get_pix_fmt_name(dstFormat));
1357 486 flags &= ~SWS_FULL_CHR_H_INT;
1358 486 sws->flags = flags;
1359 }
1360
4/4
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 68875 if (isAnyRGB(dstFormat) && !(flags & SWS_FULL_CHR_H_INT))
1361 7586 c->chrDstHSubSample = 1;
1362
1363 // drop some chroma lines if the user wants it
1364 68875 c->vChrDrop = (flags & SWS_SRC_V_CHR_DROP_MASK) >>
1365 SWS_SRC_V_CHR_DROP_SHIFT;
1366 68875 c->chrSrcVSubSample += c->vChrDrop;
1367
1368 /* drop every other pixel for chroma calculation unless user
1369 * wants full chroma */
1370
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 68875 if (isAnyRGB(srcFormat) && !(srcW & 1) && !(flags & SWS_FULL_CHR_H_INP) &&
1371
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 25846 srcFormat != AV_PIX_FMT_RGB8 && srcFormat != AV_PIX_FMT_BGR8 &&
1372
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 25544 srcFormat != AV_PIX_FMT_RGB4 && srcFormat != AV_PIX_FMT_BGR4 &&
1373
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 25245 srcFormat != AV_PIX_FMT_RGB4_BYTE && srcFormat != AV_PIX_FMT_BGR4_BYTE &&
1374
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 24682 srcFormat != AV_PIX_FMT_GBRP9BE && srcFormat != AV_PIX_FMT_GBRP9LE &&
1375
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 23977 srcFormat != AV_PIX_FMT_GBRP10BE && srcFormat != AV_PIX_FMT_GBRP10LE &&
1376
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 22362 srcFormat != AV_PIX_FMT_GBRP10MSBBE && srcFormat != AV_PIX_FMT_GBRP10MSBLE &&
1377
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 21788 srcFormat != AV_PIX_FMT_GBRAP10BE && srcFormat != AV_PIX_FMT_GBRAP10LE &&
1378
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 21127 srcFormat != AV_PIX_FMT_GBRP12BE && srcFormat != AV_PIX_FMT_GBRP12LE &&
1379
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 19485 srcFormat != AV_PIX_FMT_GBRP12MSBBE && srcFormat != AV_PIX_FMT_GBRP12MSBLE &&
1380
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 18937 srcFormat != AV_PIX_FMT_GBRAP12BE && srcFormat != AV_PIX_FMT_GBRAP12LE &&
1381
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 18366 srcFormat != AV_PIX_FMT_GBRAP14BE && srcFormat != AV_PIX_FMT_GBRAP14LE &&
1382
4/4
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 17826 srcFormat != AV_PIX_FMT_GBRP14BE && srcFormat != AV_PIX_FMT_GBRP14LE &&
1383
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 17081 srcFormat != AV_PIX_FMT_GBRP16BE && srcFormat != AV_PIX_FMT_GBRP16LE &&
1384
4/4
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 16155 srcFormat != AV_PIX_FMT_GBRAP16BE && srcFormat != AV_PIX_FMT_GBRAP16LE &&
1385
4/4
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 15832 srcFormat != AV_PIX_FMT_GBRPF32BE && srcFormat != AV_PIX_FMT_GBRPF32LE &&
1386
3/4
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 15795 srcFormat != AV_PIX_FMT_GBRAPF32BE && srcFormat != AV_PIX_FMT_GBRAPF32LE &&
1387
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 15794 srcFormat != AV_PIX_FMT_GBRPF16BE && srcFormat != AV_PIX_FMT_GBRPF16LE &&
1388
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 15575 srcFormat != AV_PIX_FMT_GBRAPF16BE && srcFormat != AV_PIX_FMT_GBRAPF16LE &&
1389
2/2
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 15530 ((dstW >> c->chrDstHSubSample) <= (srcW >> 1) ||
1390
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 14034 (flags & SWS_FAST_BILINEAR)))
1391 1496 c->chrSrcHSubSample = 1;
1392
1393 // Note the AV_CEIL_RSHIFT is so that we always round toward +inf.
1394 68875 c->chrSrcW = AV_CEIL_RSHIFT(srcW, c->chrSrcHSubSample);
1395 68875 c->chrSrcH = AV_CEIL_RSHIFT(srcH, c->chrSrcVSubSample);
1396 68875 c->chrDstW = AV_CEIL_RSHIFT(dstW, c->chrDstHSubSample);
1397 68875 c->chrDstH = AV_CEIL_RSHIFT(dstH, c->chrDstVSubSample);
1398
1399
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 68875 if (!FF_ALLOCZ_TYPED_ARRAY(c->formatConvBuffer, FFALIGN(srcW * 2 + 78, 16) * 2))
1400 ✗ goto nomem;
1401
1402 68875 c->srcBpc = desc_src->comp[0].depth;
1403
2/2
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 68875 if (c->srcBpc < 8)
1404 5844 c->srcBpc = 8;
1405 68875 c->dstBpc = desc_dst->comp[0].depth;
1406
2/2
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 68875 if (c->dstBpc < 8)
1407 3776 c->dstBpc = 8;
1408
4/4
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 68875 if (isAnyRGB(srcFormat) || srcFormat == AV_PIX_FMT_PAL8)
1409 27317 c->srcBpc = 16;
1410
2/2
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 68875 if (c->dstBpc == 16)
1411 5489 dst_stride <<= 1;
1412
1413
6/6
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 68875 if (INLINE_MMXEXT(cpu_flags) && c->srcBpc == 8 && c->dstBpc <= 14) {
1414
2/2
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 7253 c->canMMXEXTBeUsed = dstW >= srcW && (dstW & 31) == 0 &&
1415
4/4
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 20060 c->chrDstW >= c->chrSrcW &&
1416
1/2
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 4953 (srcW & 15) == 0;
1417
8/8
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 7854 if (!c->canMMXEXTBeUsed && dstW >= srcW && c->chrDstW >= c->chrSrcW && (srcW & 15) == 0
1418
1419
1/2
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 372 && (flags & SWS_FAST_BILINEAR)) {
1420 ✗ if (flags & SWS_PRINT_INFO)
1421 ✗ av_log(c, AV_LOG_INFO,
1422 "output width is not a multiple of 32 -> no MMXEXT scaler\n");
1423 }
1424
4/8
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 7854 if (usesHFilter || isNBPS(sws->src_format) || is16BPS(sws->src_format) || isAnyRGB(sws->src_format))
1425 ✗ c->canMMXEXTBeUsed = 0;
1426 } else
1427 61021 c->canMMXEXTBeUsed = 0;
1428
1429 68875 int64_t chrXInc = (((int64_t)c->chrSrcW << 16) + (c->chrDstW >> 1)) / c->chrDstW;
1430 68875 int64_t chrYInc = (((int64_t)c->chrSrcH << 16) + (c->chrDstH >> 1)) / c->chrDstH;
1431
1432 /* Match pixel 0 of the src to pixel 0 of dst and match pixel n-2 of src
1433 * to pixel n-2 of dst, but only for the FAST_BILINEAR mode otherwise do
1434 * correct scaling.
1435 * n-2 is the last chrominance sample available.
1436 * This is not perfect, but no one should notice the difference, the more
1437 * correct variant would be like the vertical one, but that would require
1438 * some special code for the first and last pixel */
1439
1/2
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 68875 if (flags & SWS_FAST_BILINEAR) {
1440 ✗ if (c->canMMXEXTBeUsed) {
1441 ✗ lumXInc += 20;
1442 ✗ chrXInc += 20;
1443 }
1444 // we don't use the x86 asm scaler if MMX is available
1445 ✗ else if (INLINE_MMX(cpu_flags) && c->dstBpc <= 14) {
1446 ✗ lumXInc = ((int64_t)(srcW - 2) << 16) / (dstW - 2) - 20;
1447 ✗ chrXInc = ((int64_t)(c->chrSrcW - 2) << 16) / (c->chrDstW - 2) - 20;
1448 }
1449 }
1450
3/6
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 68875 if (chrXInc < 10 || chrXInc > INT_MAX ||
1451
2/4
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 68875 chrYInc < 10 || chrYInc > INT_MAX ||
1452
2/4
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 68875 lumXInc < 10 || lumXInc > INT_MAX ||
1453
1/2
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 68875 lumYInc < 10 || lumYInc > INT_MAX)
1454 ✗ return AVERROR_PATCHWELCOME;
1455
1456 68875 c->lumXInc = lumXInc;
1457 68875 c->lumYInc = lumYInc;
1458 68875 c->chrXInc = chrXInc;
1459 68875 c->chrYInc = chrYInc;
1460
1461
1462 // hardcoded for now
1463 68875 c->gamma_value = 2.2;
1464 68875 tmpFmt = AV_PIX_FMT_RGBA64LE;
1465
1466
3/8
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 68875 if (!unscaled && sws->gamma_flag && (srcFormat != tmpFmt || dstFormat != tmpFmt)) {
1467 SwsInternal *c2;
1468 ✗ c->cascaded_context[0] = NULL;
1469
1470 ✗ ret = av_image_alloc(c->cascaded_tmp[0], c->cascaded_tmpStride[0],
1471 srcW, srcH, tmpFmt, 64);
1472 ✗ if (ret < 0)
1473 ✗ return ret;
1474
1475 ✗ c->cascaded_context[0] = sws_getContext(srcW, srcH, srcFormat,
1476 srcW, srcH, tmpFmt,
1477 flags, NULL, NULL,
1478 ✗ sws->scaler_params);
1479 ✗ if (!c->cascaded_context[0]) {
1480 ✗ return AVERROR(ENOMEM);
1481 }
1482
1483 ✗ c->cascaded_context[1] = sws_getContext(srcW, srcH, tmpFmt,
1484 dstW, dstH, tmpFmt,
1485 flags, srcFilter, dstFilter,
1486 ✗ sws->scaler_params);
1487
1488 ✗ if (!c->cascaded_context[1])
1489 ✗ return AVERROR(ENOMEM);
1490
1491 ✗ c2 = sws_internal(c->cascaded_context[1]);
1492 ✗ c2->is_internal_gamma = 1;
1493 ✗ c2->gamma = alloc_gamma_tbl( c->gamma_value);
1494 ✗ c2->inv_gamma = alloc_gamma_tbl(1.f/c->gamma_value);
1495 ✗ if (!c2->gamma || !c2->inv_gamma)
1496 ✗ return AVERROR(ENOMEM);
1497
1498 // is_internal_flag is set after creating the context
1499 // to properly create the gamma convert FilterDescriptor
1500 // we have to re-initialize it
1501 ✗ ff_free_filters(c2);
1502 ✗ if ((ret = ff_init_filters(c2)) < 0) {
1503 ✗ sws_freeContext(c->cascaded_context[1]);
1504 ✗ c->cascaded_context[1] = NULL;
1505 ✗ return ret;
1506 }
1507
1508 ✗ c->cascaded_context[2] = NULL;
1509 ✗ if (dstFormat != tmpFmt) {
1510 ✗ ret = av_image_alloc(c->cascaded_tmp[1], c->cascaded_tmpStride[1],
1511 dstW, dstH, tmpFmt, 64);
1512 ✗ if (ret < 0)
1513 ✗ return ret;
1514
1515 ✗ c->cascaded_context[2] = sws_getContext(dstW, dstH, tmpFmt,
1516 dstW, dstH, dstFormat,
1517 flags, NULL, NULL,
1518 ✗ sws->scaler_params);
1519 ✗ if (!c->cascaded_context[2])
1520 ✗ return AVERROR(ENOMEM);
1521 }
1522 ✗ return 0;
1523 }
1524
1525
1/2
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 68875 if (isBayer(srcFormat)) {
1526 ✗ if (!unscaled ||
1527 ✗ (dstFormat != AV_PIX_FMT_RGB24 && dstFormat != AV_PIX_FMT_YUV420P &&
1528 dstFormat != AV_PIX_FMT_RGB48)) {
1529 ✗ enum AVPixelFormat tmpFormat = isBayer16BPS(srcFormat) ? AV_PIX_FMT_RGB48 : AV_PIX_FMT_RGB24;
1530
1531 ✗ ret = av_image_alloc(c->cascaded_tmp[0], c->cascaded_tmpStride[0],
1532 srcW, srcH, tmpFormat, 64);
1533 ✗ if (ret < 0)
1534 ✗ return ret;
1535
1536 ✗ c->cascaded_context[0] = sws_getContext(srcW, srcH, srcFormat,
1537 srcW, srcH, tmpFormat,
1538 flags, srcFilter, NULL,
1539 ✗ sws->scaler_params);
1540 ✗ if (!c->cascaded_context[0])
1541 ✗ return AVERROR(ENOMEM);
1542
1543 ✗ c->cascaded_context[1] = sws_getContext(srcW, srcH, tmpFormat,
1544 dstW, dstH, dstFormat,
1545 flags, NULL, dstFilter,
1546 ✗ sws->scaler_params);
1547 ✗ if (!c->cascaded_context[1])
1548 ✗ return AVERROR(ENOMEM);
1549 ✗ return 0;
1550 }
1551 }
1552
1553
6/6
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 68875 if (unscaled && c->srcBpc == 8 && dstFormat == AV_PIX_FMT_GRAYF32){
1554
2/2
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✓ Branch 1 taken 17 times.
 4369 for (i = 0; i < 256; ++i){
1555 4352 c->uint2float_lut[i] = (float)i * float_mult;
1556 }
1557 }
1558
1559 // float will be converted to uint16_t
1560
6/6
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 68875 if (isFloat(srcFormat) && !isAnyRGB(srcFormat) &&
1561
5/8
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 28 (!unscaled || unscaled && dstFormat != srcFormat && (srcFormat != AV_PIX_FMT_GRAYF32 ||
1562 dstFormat != AV_PIX_FMT_GRAY8))){
1563 30 c->srcBpc = 16;
1564 }
1565
1566
4/4
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✓ Branch 5 taken 11889 times.
 68875 if (CONFIG_SWSCALE_ALPHA && isALPHA(srcFormat) && !isALPHA(dstFormat)) {
1567 1873 enum AVPixelFormat tmpFormat = alphaless_fmt(srcFormat);
1568
1569
3/4
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 1873 if (tmpFormat != AV_PIX_FMT_NONE && sws->alpha_blend != SWS_ALPHA_BLEND_NONE) {
1570 ✗ if (!unscaled ||
1571 ✗ dstFormat != tmpFormat ||
1572 ✗ usesHFilter || usesVFilter ||
1573 ✗ sws->src_range != sws->dst_range
1574 ) {
1575 ✗ c->cascaded_mainindex = 1;
1576 ✗ ret = av_image_alloc(c->cascaded_tmp[0], c->cascaded_tmpStride[0],
1577 srcW, srcH, tmpFormat, 64);
1578 ✗ if (ret < 0)
1579 ✗ return ret;
1580
1581 ✗ c->cascaded_context[0] = alloc_set_opts(srcW, srcH, srcFormat,
1582 srcW, srcH, tmpFormat,
1583 ✗ flags, sws->scaler_params);
1584 ✗ if (!c->cascaded_context[0])
1585 ✗ return AVERROR(EINVAL);
1586 ✗ c->cascaded_context[0]->alpha_blend = sws->alpha_blend;
1587 ✗ ret = sws_init_context(c->cascaded_context[0], NULL , NULL);
1588 ✗ if (ret < 0)
1589 ✗ return ret;
1590
1591 ✗ c->cascaded_context[1] = alloc_set_opts(srcW, srcH, tmpFormat,
1592 dstW, dstH, dstFormat,
1593 ✗ flags, sws->scaler_params);
1594 ✗ if (!c->cascaded_context[1])
1595 ✗ return AVERROR(EINVAL);
1596
1597 ✗ c->cascaded_context[1]->src_range = sws->src_range;
1598 ✗ c->cascaded_context[1]->dst_range = sws->dst_range;
1599 ✗ ret = sws_init_context(c->cascaded_context[1], srcFilter , dstFilter);
1600 ✗ if (ret < 0)
1601 ✗ return ret;
1602
1603 ✗ return 0;
1604 }
1605 }
1606 }
1607
1608 /* alpha blend special case, note this has been split via cascaded contexts if its scaled */
1609
4/6
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 68875 if (unscaled && !usesHFilter && !usesVFilter &&
1610
1/4
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 49920 sws->alpha_blend != SWS_ALPHA_BLEND_NONE &&
1611 ✗ isALPHA(srcFormat) &&
1612 ✗ (sws->src_range == sws->dst_range || isAnyRGB(dstFormat)) &&
1613 ✗ alphaless_fmt(srcFormat) == dstFormat
1614 ) {
1615 ✗ c->convert_unscaled = ff_sws_alphablendaway;
1616
1617 ✗ if (flags & SWS_PRINT_INFO)
1618 ✗ av_log(c, AV_LOG_INFO,
1619 "using alpha blendaway %s -> %s special converter\n",
1620 av_get_pix_fmt_name(srcFormat), av_get_pix_fmt_name(dstFormat));
1621 ✗ return 0;
1622 }
1623
1624 /* unscaled special cases */
1625
4/6
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✗ Branch 5 not taken.
 68875 if (unscaled && !usesHFilter && !usesVFilter &&
1626
5/6
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✓ Branch 1 taken 44788 times.
✓ Branch 3 taken 4473 times.
✓ Branch 4 taken 659 times.
✓ Branch 5 taken 4473 times.
✗ Branch 6 not taken.
 54393 (sws->src_range == sws->dst_range || isAnyRGB(dstFormat) ||
1627
2/4
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✗ Branch 3 not taken.
✗ Branch 5 not taken.
✓ Branch 6 taken 4473 times.
 8946 isFloat(srcFormat) || isFloat(dstFormat) || isBayer(srcFormat))){
1628
1629 45447 ff_get_unscaled_swscale(c);
1630
1631
2/2
✓ Branch 0 taken 9939 times.
✓ Branch 1 taken 35508 times.
 45447 if (c->convert_unscaled) {
1632
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 9939 times.
 9939 if (flags & SWS_PRINT_INFO)
1633 ✗ av_log(c, AV_LOG_INFO,
1634 "using unscaled %s -> %s special converter\n",
1635 av_get_pix_fmt_name(srcFormat), av_get_pix_fmt_name(dstFormat));
1636 9939 return 0;
1637 }
1638 }
1639
1640 /* precalculate horizontal scaler filter coefficients */
1641 {
1642 #if HAVE_MMXEXT_INLINE
1643 // can't downscale !!!
1644
3/4
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✓ Branch 1 taken 55233 times.
✗ Branch 2 not taken.
✓ Branch 3 taken 3703 times.
 58936 if (c->canMMXEXTBeUsed && (flags & SWS_FAST_BILINEAR)) {
1645 ✗ c->lumMmxextFilterCodeSize = ff_init_hscaler_mmxext(dstW, c->lumXInc, NULL,
1646 NULL, NULL, 8);
1647 ✗ c->chrMmxextFilterCodeSize = ff_init_hscaler_mmxext(c->chrDstW, c->chrXInc,
1648 NULL, NULL, NULL, 4);
1649
1650 ✗ c->lumMmxextFilterCode = ff_sws_jit_alloc(c->lumMmxextFilterCodeSize);
1651 ✗ c->chrMmxextFilterCode = ff_sws_jit_alloc(c->chrMmxextFilterCodeSize);
1652 ✗ if (!c->lumMmxextFilterCode || !c->chrMmxextFilterCode) {
1653 ✗ av_log(c, AV_LOG_ERROR, "Failed to allocate MMX2FilterCode\n");
1654 ✗ return AVERROR(ENOMEM);
1655 }
1656
1657 ✗ if (!FF_ALLOCZ_TYPED_ARRAY(c->hLumFilter, dstW / 8 + 8) ||
1658 ✗ !FF_ALLOCZ_TYPED_ARRAY(c->hChrFilter, c->chrDstW / 4 + 8) ||
1659 ✗ !FF_ALLOCZ_TYPED_ARRAY(c->hLumFilterPos, dstW / 2 / 8 + 8) ||
1660 ✗ !FF_ALLOCZ_TYPED_ARRAY(c->hChrFilterPos, c->chrDstW / 2 / 4 + 8))
1661 ✗ goto nomem;
1662
1663 ✗ ff_init_hscaler_mmxext( dstW, c->lumXInc, c->lumMmxextFilterCode,
1664 c->hLumFilter, (uint32_t*)c->hLumFilterPos, 8);
1665 ✗ ff_init_hscaler_mmxext(c->chrDstW, c->chrXInc, c->chrMmxextFilterCode,
1666 c->hChrFilter, (uint32_t*)c->hChrFilterPos, 4);
1667
1668 ✗ if ((ret = ff_sws_jit_protect(c->lumMmxextFilterCode, c->lumMmxextFilterCodeSize)) < 0 ||
1669 ✗ (ret = ff_sws_jit_protect(c->chrMmxextFilterCode, c->chrMmxextFilterCodeSize)) < 0) {
1670 ✗ av_log(c, AV_LOG_ERROR, "mprotect failed, cannot use fast bilinear scaler\n");
1671 ✗ goto fail;
1672 }
1673 } else
1674 #endif /* HAVE_MMXEXT_INLINE */
1675 {
1676
2/2
✓ Branch 0 taken 32921 times.
✓ Branch 1 taken 26015 times.
 58936 const int filterAlign = X86_MMX(cpu_flags) ? 4 :
1677 PPC_ALTIVEC(cpu_flags) ? 8 :
1678 have_neon(cpu_flags) ? 4 :
1679 have_lsx(cpu_flags) ? 8 :
1680 have_lasx(cpu_flags) ? 8 : 1;
1681
1682
1/2
✗ Branch 2 not taken.
✓ Branch 3 taken 58936 times.
 117872 if ((ret = initFilter(&c->hLumFilter, &c->hLumFilterPos,
1683 &c->hLumFilterSize, c->lumXInc,
1684 srcW, dstW, filterAlign, 1 << 14,
1685 lum_scaler, flags,
1686 cpu_flags, srcFilter->lumH, dstFilter->lumH,
1687 58936 sws->scaler_params,
1688 get_local_pos(c, 0, 0, 0),
1689 get_local_pos(c, 0, 0, 0))) < 0)
1690 ✗ goto fail;
1691
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 58936 times.
 58936 if (ff_shuffle_filter_coefficients(c, c->hLumFilterPos, c->hLumFilterSize, c->hLumFilter, dstW) < 0)
1692 ✗ goto nomem;
1693
1/2
✗ Branch 2 not taken.
✓ Branch 3 taken 58936 times.
 117872 if ((ret = initFilter(&c->hChrFilter, &c->hChrFilterPos,
1694 &c->hChrFilterSize, c->chrXInc,
1695 c->chrSrcW, c->chrDstW, filterAlign, 1 << 14,
1696 chr_scaler, flags,
1697 cpu_flags, srcFilter->chrH, dstFilter->chrH,
1698 58936 sws->scaler_params,
1699 get_local_pos(c, c->chrSrcHSubSample, sws->src_h_chr_pos, 0),
1700 get_local_pos(c, c->chrDstHSubSample, sws->dst_h_chr_pos, 0))) < 0)
1701 ✗ goto fail;
1702
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 58936 times.
 58936 if (ff_shuffle_filter_coefficients(c, c->hChrFilterPos, c->hChrFilterSize, c->hChrFilter, c->chrDstW) < 0)
1703 ✗ goto nomem;
1704 }
1705 } // initialize horizontal stuff
1706
1707 /* precalculate vertical scaler filter coefficients */
1708 {
1709
2/2
✓ Branch 0 taken 32921 times.
✓ Branch 1 taken 26015 times.
 58936 const int filterAlign = X86_MMX(cpu_flags) ? 2 :
1710 PPC_ALTIVEC(cpu_flags) ? 8 :
1711 have_neon(cpu_flags) ? 2 : 1;
1712
1713 58936 ret = initFilter(&c->vLumFilter, &c->vLumFilterPos, &c->vLumFilterSize,
1714 c->lumYInc, srcH, dstH, filterAlign, (1 << 12),
1715 lum_scaler, flags,
1716 cpu_flags, srcFilter->lumV, dstFilter->lumV,
1717 58936 sws->scaler_params,
1718 get_local_pos(c, 0, 0, 1),
1719 get_local_pos(c, 0, 0, 1));
1720 58936 int usecascade = (ret == RETCODE_USE_CASCADE);
1721
1/4
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✗ Branch 2 not taken.
✗ Branch 3 not taken.
 58936 if (ret < 0 && !usecascade)
1722 ✗ goto fail;
1723
1/2
✗ Branch 2 not taken.
✓ Branch 3 taken 58936 times.
 117872 if ((ret = initFilter(&c->vChrFilter, &c->vChrFilterPos, &c->vChrFilterSize,
1724 c->chrYInc, c->chrSrcH, c->chrDstH,
1725 filterAlign, (1 << 12),
1726 chr_scaler, flags,
1727 cpu_flags, srcFilter->chrV, dstFilter->chrV,
1728 58936 sws->scaler_params,
1729 get_local_pos(c, c->chrSrcVSubSample, sws->src_v_chr_pos, 1),
1730 get_local_pos(c, c->chrDstVSubSample, sws->dst_v_chr_pos, 1))) < 0)
1731
1732 ✗ goto fail;
1733
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 58936 times.
 58936 if (usecascade) {
1734 ✗ ret = RETCODE_USE_CASCADE;
1735 ✗ goto fail;
1736 }
1737
1738 #if HAVE_ALTIVEC
1739 ret = ff_sws_init_altivec_bufs(c);
1740 if (ret < 0)
1741 goto fail;
1742 #endif
1743 }
1744
1745
2/2
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✓ Branch 1 taken 58936 times.
 294680 for (i = 0; i < 4; i++)
1746
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 235744 times.
 235744 if (!FF_ALLOCZ_TYPED_ARRAY(c->dither_error[i], sws->dst_w + 3))
1747 ✗ goto nomem;
1748
1749
4/4
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 58936 c->needAlpha = (CONFIG_SWSCALE_ALPHA && isALPHA(sws->src_format) && isALPHA(sws->dst_format)) ? 1 : 0;
1750
1751 // 64 / c->scalingBpp is the same as 16 / sizeof(scaling_intermediate)
1752 58936 c->uv_off = (dst_stride>>1) + 64 / (c->dstBpc &~ 7);
1753 58936 c->uv_offx2 = dst_stride + 16;
1754
1755
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 58936 av_assert0(c->chrDstH <= dstH);
1756
1757
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 58936 if (flags & SWS_PRINT_INFO) {
1758 ✗ const char *scaler = NULL, *cpucaps;
1759
1760 ✗ for (i = 0; i < FF_ARRAY_ELEMS(scale_algorithms); i++) {
1761 ✗ if (flags & scale_algorithms[i].flag) {
1762 ✗ scaler = scale_algorithms[i].description;
1763 ✗ break;
1764 }
1765 }
1766 ✗ if (!scaler)
1767 ✗ scaler = "ehh flags invalid?!";
1768 ✗ av_log(c, AV_LOG_INFO, "%s scaler, from %s to %s%s ",
1769 scaler,
1770 av_get_pix_fmt_name(srcFormat),
1771 ✗ dstFormat == AV_PIX_FMT_BGR555 || dstFormat == AV_PIX_FMT_BGR565 ||
1772 ✗ dstFormat == AV_PIX_FMT_RGB444BE || dstFormat == AV_PIX_FMT_RGB444LE ||
1773 ✗ dstFormat == AV_PIX_FMT_BGR444BE || dstFormat == AV_PIX_FMT_BGR444LE ?
1774 "dithered " : "",
1775 av_get_pix_fmt_name(dstFormat));
1776
1777 ✗ if (INLINE_MMXEXT(cpu_flags))
1778 ✗ cpucaps = "MMXEXT";
1779 ✗ else if (INLINE_MMX(cpu_flags))
1780 ✗ cpucaps = "MMX";
1781 else if (PPC_ALTIVEC(cpu_flags))
1782 cpucaps = "AltiVec";
1783 else
1784 ✗ cpucaps = "C";
1785
1786 ✗ av_log(c, AV_LOG_INFO, "using %s\n", cpucaps);
1787
1788 ✗ av_log(c, AV_LOG_VERBOSE, "%dx%d -> %dx%d\n", srcW, srcH, dstW, dstH);
1789 ✗ av_log(c, AV_LOG_DEBUG,
1790 "lum srcW=%d srcH=%d dstW=%d dstH=%d xInc=%d yInc=%d\n",
1791 sws->src_w, sws->src_h, sws->dst_w, sws->dst_h, c->lumXInc, c->lumYInc);
1792 ✗ av_log(c, AV_LOG_DEBUG,
1793 "chr srcW=%d srcH=%d dstW=%d dstH=%d xInc=%d yInc=%d\n",
1794 c->chrSrcW, c->chrSrcH, c->chrDstW, c->chrDstH,
1795 c->chrXInc, c->chrYInc);
1796 }
1797
1798 58936 ff_sws_init_scale(c);
1799
1800 58936 return ff_init_filters(c);
1801 ✗ nomem:
1802 ✗ ret = AVERROR(ENOMEM);
1803 ✗ fail: // FIXME replace things by appropriate error codes
1804 ✗ if (ret == RETCODE_USE_CASCADE) {
1805 ✗ int tmpW = sqrt(srcW * (int64_t)dstW);
1806 ✗ int tmpH = sqrt(srcH * (int64_t)dstH);
1807 ✗ enum AVPixelFormat tmpFormat = AV_PIX_FMT_YUV420P;
1808
1809 ✗ if (isALPHA(srcFormat))
1810 ✗ tmpFormat = AV_PIX_FMT_YUVA420P;
1811
1812 ✗ if (srcW*(int64_t)srcH <= 4LL*dstW*dstH)
1813 ✗ return AVERROR(EINVAL);
1814
1815 ✗ ret = av_image_alloc(c->cascaded_tmp[0], c->cascaded_tmpStride[0],
1816 tmpW, tmpH, tmpFormat, 64);
1817 ✗ if (ret < 0)
1818 ✗ return ret;
1819
1820 ✗ c->cascaded_context[0] = sws_getContext(srcW, srcH, srcFormat,
1821 tmpW, tmpH, tmpFormat,
1822 flags, srcFilter, NULL,
1823 ✗ sws->scaler_params);
1824 ✗ if (!c->cascaded_context[0])
1825 ✗ return AVERROR(ENOMEM);
1826
1827 ✗ c->cascaded_context[1] = sws_getContext(tmpW, tmpH, tmpFormat,
1828 dstW, dstH, dstFormat,
1829 flags, NULL, dstFilter,
1830 ✗ sws->scaler_params);
1831 ✗ if (!c->cascaded_context[1])
1832 ✗ return AVERROR(ENOMEM);
1833 ✗ return 0;
1834 }
1835 ✗ return ret;
1836 }
1837
1838 ✗ static int context_init_threaded(SwsContext *sws,
1839 SwsFilter *src_filter, SwsFilter *dst_filter)
1840 {
1841 ✗ SwsInternal *c = sws_internal(sws);
1842 int ret;
1843
1844 ✗ ret = avpriv_slicethread_create(&c->slicethread, (void*) sws,
1845 ff_sws_slice_worker, NULL, sws->threads);
1846 ✗ if (ret == AVERROR(ENOSYS)) {
1847 ✗ sws->threads = 1;
1848 ✗ return 0;
1849 ✗ } else if (ret < 0)
1850 ✗ return ret;
1851
1852 ✗ sws->threads = ret;
1853
1854 ✗ c->slice_ctx = av_calloc(sws->threads, sizeof(*c->slice_ctx));
1855 ✗ c->slice_err = av_calloc(sws->threads, sizeof(*c->slice_err));
1856 ✗ if (!c->slice_ctx || !c->slice_err)
1857 ✗ return AVERROR(ENOMEM);
1858
1859 ✗ for (int i = 0; i < sws->threads; i++) {
1860 SwsContext *slice;
1861 ✗ slice = c->slice_ctx[i] = sws_alloc_context();
1862 ✗ if (!slice)
1863 ✗ return AVERROR(ENOMEM);
1864 ✗ sws_internal(slice)->parent = sws;
1865 ✗ c->nb_slice_ctx++;
1866
1867 ✗ ret = av_opt_copy(slice, sws);
1868 ✗ if (ret < 0)
1869 ✗ return ret;
1870 ✗ slice->threads = 1;
1871
1872 ✗ ret = ff_sws_init_single_context(slice, src_filter, dst_filter);
1873 ✗ if (ret < 0)
1874 ✗ return ret;
1875
1876 ✗ if (slice->dither == SWS_DITHER_ED) {
1877 ✗ av_log(c, AV_LOG_VERBOSE,
1878 "Error-diffusion dither is in use, scaling will be single-threaded.");
1879 ✗ break;
1880 }
1881 }
1882
1883 ✗ return 0;
1884 }
1885
1886 45684 av_cold int sws_init_context(SwsContext *sws, SwsFilter *srcFilter,
1887 SwsFilter *dstFilter)
1888 {
1889 45684 SwsInternal *c = sws_internal(sws);
1890 static AVOnce rgb2rgb_once = AV_ONCE_INIT;
1891 enum AVPixelFormat src_format, dst_format;
1892 int ret;
1893
1894 45684 c->is_legacy_init = 1;
1895 45684 c->frame_src = av_frame_alloc();
1896 45684 c->frame_dst = av_frame_alloc();
1897
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 45684 if (!c->frame_src || !c->frame_dst)
1898 ✗ return AVERROR(ENOMEM);
1899
1900
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 45684 if (ff_thread_once(&rgb2rgb_once, ff_sws_rgb2rgb_init) != 0)
1901 ✗ return AVERROR_UNKNOWN;
1902
1903 45684 src_format = sws->src_format;
1904 45684 dst_format = sws->dst_format;
1905 45684 sws->src_range |= handle_jpeg(&sws->src_format);
1906 45684 sws->dst_range |= handle_jpeg(&sws->dst_format);
1907
1908
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 45684 if (src_format != sws->src_format || dst_format != sws->dst_format)
1909 563 av_log(c, AV_LOG_WARNING, "deprecated pixel format used, make sure you did set range correctly\n");
1910
1911
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 45684 if (sws->threads != 1) {
1912 ✗ ret = context_init_threaded(sws, srcFilter, dstFilter);
1913 ✗ if (ret < 0 || sws->threads > 1)
1914 ✗ return ret;
1915 // threading disabled in this build, init as single-threaded
1916 }
1917
1918 45684 return ff_sws_init_single_context(sws, srcFilter, dstFilter);
1919 }
1920
1921 5740 SwsContext *sws_getContext(int srcW, int srcH, enum AVPixelFormat srcFormat,
1922 int dstW, int dstH, enum AVPixelFormat dstFormat,
1923 int flags, SwsFilter *srcFilter,
1924 SwsFilter *dstFilter, const double *param)
1925 {
1926 SwsContext *sws;
1927
1928 5740 sws = alloc_set_opts(srcW, srcH, srcFormat,
1929 dstW, dstH, dstFormat,
1930 flags, param);
1931
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 5740 if (!sws)
1932 ✗ return NULL;
1933
1934
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 5740 if (sws_init_context(sws, srcFilter, dstFilter) < 0) {
1935 ✗ sws_freeContext(sws);
1936 ✗ return NULL;
1937 }
1938
1939 5740 return sws;
1940 }
1941
1942 ✗ static int isnan_vec(SwsVector *a)
1943 {
1944 int i;
1945 ✗ for (i=0; i<a->length; i++)
1946 ✗ if (isnan(a->coeff[i]))
1947 ✗ return 1;
1948 ✗ return 0;
1949 }
1950
1951 ✗ static void makenan_vec(SwsVector *a)
1952 {
1953 int i;
1954 ✗ for (i=0; i<a->length; i++)
1955 ✗ a->coeff[i] = NAN;
1956 ✗ }
1957
1958 ✗ SwsVector *sws_allocVec(int length)
1959 {
1960 SwsVector *vec;
1961
1962 ✗ if(length <= 0 || length > INT_MAX/ sizeof(double))
1963 ✗ return NULL;
1964
1965 ✗ vec = av_malloc(sizeof(SwsVector));
1966 ✗ if (!vec)
1967 ✗ return NULL;
1968 ✗ vec->length = length;
1969 ✗ vec->coeff = av_malloc(sizeof(double) * length);
1970 ✗ if (!vec->coeff)
1971 ✗ av_freep(&vec);
1972 ✗ return vec;
1973 }
1974
1975 ✗ SwsVector *sws_getGaussianVec(double variance, double quality)
1976 {
1977 ✗ const int length = (int)(variance * quality + 0.5) | 1;
1978 int i;
1979 ✗ double middle = (length - 1) * 0.5;
1980 SwsVector *vec;
1981
1982 ✗ if(variance < 0 || quality < 0)
1983 ✗ return NULL;
1984
1985 ✗ vec = sws_allocVec(length);
1986
1987 ✗ if (!vec)
1988 ✗ return NULL;
1989
1990 ✗ for (i = 0; i < length; i++) {
1991 ✗ double dist = i - middle;
1992 ✗ vec->coeff[i] = exp(-dist * dist / (2 * variance * variance)) /
1993 ✗ sqrt(2 * variance * M_PI);
1994 }
1995
1996 ✗ sws_normalizeVec(vec, 1.0);
1997
1998 ✗ return vec;
1999 }
2000
2001 /**
2002 * Allocate and return a vector with length coefficients, all
2003 * with the same value c.
2004 */
2005 static
2006 ✗ SwsVector *sws_getConstVec(double c, int length)
2007 {
2008 int i;
2009 ✗ SwsVector *vec = sws_allocVec(length);
2010
2011 ✗ if (!vec)
2012 ✗ return NULL;
2013
2014 ✗ for (i = 0; i < length; i++)
2015 ✗ vec->coeff[i] = c;
2016
2017 ✗ return vec;
2018 }
2019
2020 /**
2021 * Allocate and return a vector with just one coefficient, with
2022 * value 1.0.
2023 */
2024 static
2025 ✗ SwsVector *sws_getIdentityVec(void)
2026 {
2027 ✗ return sws_getConstVec(1.0, 1);
2028 }
2029
2030 ✗ static double sws_dcVec(SwsVector *a)
2031 {
2032 int i;
2033 ✗ double sum = 0;
2034
2035 ✗ for (i = 0; i < a->length; i++)
2036 ✗ sum += a->coeff[i];
2037
2038 ✗ return sum;
2039 }
2040
2041 ✗ void sws_scaleVec(SwsVector *a, double scalar)
2042 {
2043 int i;
2044
2045 ✗ for (i = 0; i < a->length; i++)
2046 ✗ a->coeff[i] *= scalar;
2047 ✗ }
2048
2049 ✗ void sws_normalizeVec(SwsVector *a, double height)
2050 {
2051 ✗ sws_scaleVec(a, height / sws_dcVec(a));
2052 ✗ }
2053
2054 ✗ static SwsVector *sws_sumVec(SwsVector *a, SwsVector *b)
2055 {
2056 ✗ int length = FFMAX(a->length, b->length);
2057 int i;
2058 ✗ SwsVector *vec = sws_getConstVec(0.0, length);
2059
2060 ✗ if (!vec)
2061 ✗ return NULL;
2062
2063 ✗ for (i = 0; i < a->length; i++)
2064 ✗ vec->coeff[i + (length - 1) / 2 - (a->length - 1) / 2] += a->coeff[i];
2065 ✗ for (i = 0; i < b->length; i++)
2066 ✗ vec->coeff[i + (length - 1) / 2 - (b->length - 1) / 2] += b->coeff[i];
2067
2068 ✗ return vec;
2069 }
2070
2071 /* shift left / or right if "shift" is negative */
2072 ✗ static SwsVector *sws_getShiftedVec(SwsVector *a, int shift)
2073 {
2074 ✗ int length = a->length + FFABS(shift) * 2;
2075 int i;
2076 ✗ SwsVector *vec = sws_getConstVec(0.0, length);
2077
2078 ✗ if (!vec)
2079 ✗ return NULL;
2080
2081 ✗ for (i = 0; i < a->length; i++) {
2082 ✗ vec->coeff[i + (length - 1) / 2 -
2083 ✗ (a->length - 1) / 2 - shift] = a->coeff[i];
2084 }
2085
2086 ✗ return vec;
2087 }
2088
2089 static
2090 ✗ void sws_shiftVec(SwsVector *a, int shift)
2091 {
2092 ✗ SwsVector *shifted = sws_getShiftedVec(a, shift);
2093 ✗ if (!shifted) {
2094 ✗ makenan_vec(a);
2095 ✗ return;
2096 }
2097 ✗ av_free(a->coeff);
2098 ✗ a->coeff = shifted->coeff;
2099 ✗ a->length = shifted->length;
2100 ✗ av_free(shifted);
2101 }
2102
2103 static
2104 ✗ void sws_addVec(SwsVector *a, SwsVector *b)
2105 {
2106 ✗ SwsVector *sum = sws_sumVec(a, b);
2107 ✗ if (!sum) {
2108 ✗ makenan_vec(a);
2109 ✗ return;
2110 }
2111 ✗ av_free(a->coeff);
2112 ✗ a->coeff = sum->coeff;
2113 ✗ a->length = sum->length;
2114 ✗ av_free(sum);
2115 }
2116
2117 /**
2118 * Print with av_log() a textual representation of the vector a
2119 * if log_level <= av_log_level.
2120 */
2121 static
2122 ✗ void sws_printVec2(SwsVector *a, AVClass *log_ctx, int log_level)
2123 {
2124 int i;
2125 ✗ double max = 0;
2126 ✗ double min = 0;
2127 double range;
2128
2129 ✗ for (i = 0; i < a->length; i++)
2130 ✗ if (a->coeff[i] > max)
2131 ✗ max = a->coeff[i];
2132
2133 ✗ for (i = 0; i < a->length; i++)
2134 ✗ if (a->coeff[i] < min)
2135 ✗ min = a->coeff[i];
2136
2137 ✗ range = max - min;
2138
2139 ✗ for (i = 0; i < a->length; i++) {
2140 ✗ int x = (int)((a->coeff[i] - min) * 60.0 / range + 0.5);
2141 ✗ av_log(log_ctx, log_level, "%1.3f ", a->coeff[i]);
2142 ✗ for (; x > 0; x--)
2143 ✗ av_log(log_ctx, log_level, " ");
2144 ✗ av_log(log_ctx, log_level, "|\n");
2145 }
2146 ✗ }
2147
2148 ✗ void sws_freeVec(SwsVector *a)
2149 {
2150 ✗ if (!a)
2151 ✗ return;
2152 ✗ av_freep(&a->coeff);
2153 ✗ a->length = 0;
2154 ✗ av_free(a);
2155 }
2156
2157 ✗ void sws_freeFilter(SwsFilter *filter)
2158 {
2159 ✗ if (!filter)
2160 ✗ return;
2161
2162 ✗ sws_freeVec(filter->lumH);
2163 ✗ sws_freeVec(filter->lumV);
2164 ✗ sws_freeVec(filter->chrH);
2165 ✗ sws_freeVec(filter->chrV);
2166 ✗ av_free(filter);
2167 }
2168
2169 ✗ SwsFilter *sws_getDefaultFilter(float lumaGBlur, float chromaGBlur,
2170 float lumaSharpen, float chromaSharpen,
2171 float chromaHShift, float chromaVShift,
2172 int verbose)
2173 {
2174 ✗ SwsFilter *filter = av_malloc(sizeof(SwsFilter));
2175 ✗ if (!filter)
2176 ✗ return NULL;
2177
2178 ✗ if (lumaGBlur != 0.0) {
2179 ✗ filter->lumH = sws_getGaussianVec(lumaGBlur, 3.0);
2180 ✗ filter->lumV = sws_getGaussianVec(lumaGBlur, 3.0);
2181 } else {
2182 ✗ filter->lumH = sws_getIdentityVec();
2183 ✗ filter->lumV = sws_getIdentityVec();
2184 }
2185
2186 ✗ if (chromaGBlur != 0.0) {
2187 ✗ filter->chrH = sws_getGaussianVec(chromaGBlur, 3.0);
2188 ✗ filter->chrV = sws_getGaussianVec(chromaGBlur, 3.0);
2189 } else {
2190 ✗ filter->chrH = sws_getIdentityVec();
2191 ✗ filter->chrV = sws_getIdentityVec();
2192 }
2193
2194 ✗ if (!filter->lumH || !filter->lumV || !filter->chrH || !filter->chrV)
2195 ✗ goto fail;
2196
2197 ✗ if (chromaSharpen != 0.0) {
2198 ✗ SwsVector *id = sws_getIdentityVec();
2199 ✗ if (!id)
2200 ✗ goto fail;
2201 ✗ sws_scaleVec(filter->chrH, -chromaSharpen);
2202 ✗ sws_scaleVec(filter->chrV, -chromaSharpen);
2203 ✗ sws_addVec(filter->chrH, id);
2204 ✗ sws_addVec(filter->chrV, id);
2205 ✗ sws_freeVec(id);
2206 }
2207
2208 ✗ if (lumaSharpen != 0.0) {
2209 ✗ SwsVector *id = sws_getIdentityVec();
2210 ✗ if (!id)
2211 ✗ goto fail;
2212 ✗ sws_scaleVec(filter->lumH, -lumaSharpen);
2213 ✗ sws_scaleVec(filter->lumV, -lumaSharpen);
2214 ✗ sws_addVec(filter->lumH, id);
2215 ✗ sws_addVec(filter->lumV, id);
2216 ✗ sws_freeVec(id);
2217 }
2218
2219 ✗ if (chromaHShift != 0.0)
2220 ✗ sws_shiftVec(filter->chrH, (int)(chromaHShift + 0.5));
2221
2222 ✗ if (chromaVShift != 0.0)
2223 ✗ sws_shiftVec(filter->chrV, (int)(chromaVShift + 0.5));
2224
2225 ✗ sws_normalizeVec(filter->chrH, 1.0);
2226 ✗ sws_normalizeVec(filter->chrV, 1.0);
2227 ✗ sws_normalizeVec(filter->lumH, 1.0);
2228 ✗ sws_normalizeVec(filter->lumV, 1.0);
2229
2230 ✗ if (isnan_vec(filter->chrH) ||
2231 ✗ isnan_vec(filter->chrV) ||
2232 ✗ isnan_vec(filter->lumH) ||
2233 ✗ isnan_vec(filter->lumV))
2234 ✗ goto fail;
2235
2236 ✗ if (verbose)
2237 ✗ sws_printVec2(filter->chrH, NULL, AV_LOG_DEBUG);
2238 ✗ if (verbose)
2239 ✗ sws_printVec2(filter->lumH, NULL, AV_LOG_DEBUG);
2240
2241 ✗ return filter;
2242
2243 ✗ fail:
2244 ✗ sws_freeVec(filter->lumH);
2245 ✗ sws_freeVec(filter->lumV);
2246 ✗ sws_freeVec(filter->chrH);
2247 ✗ sws_freeVec(filter->chrV);
2248 ✗ av_freep(&filter);
2249 ✗ return NULL;
2250 }
2251
2252 355973 void sws_freeContext(SwsContext *sws)
2253 {
2254 355973 SwsInternal *c = sws_internal(sws);
2255 int i;
2256
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 355973 if (!c)
2257 266980 return;
2258
2259 88993 av_refstruct_unref(&c->hw_priv);
2260
2261
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 266979 for (i = 0; i < FF_ARRAY_ELEMS(c->graph); i++)
2262 177986 ff_sws_graph_free(&c->graph[i]);
2263 88993 ff_frame_pool_uninit(&c->frame_pool);
2264
2265
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 112184 for (i = 0; i < c->nb_slice_ctx; i++)
2266 23191 sws_freeContext(c->slice_ctx[i]);
2267 88993 av_freep(&c->slice_ctx);
2268 88993 av_freep(&c->slice_err);
2269
2270 88993 avpriv_slicethread_free(&c->slicethread);
2271
2272
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 444965 for (i = 0; i < 4; i++)
2273 355972 av_freep(&c->dither_error[i]);
2274
2275 88993 av_frame_free(&c->frame_src);
2276 88993 av_frame_free(&c->frame_dst);
2277
2278 88993 av_freep(&c->src_ranges.ranges);
2279
2280 88993 av_freep(&c->vLumFilter);
2281 88993 av_freep(&c->vChrFilter);
2282 88993 av_freep(&c->hLumFilter);
2283 88993 av_freep(&c->hChrFilter);
2284 #if HAVE_ALTIVEC
2285 ff_sws_free_altivec_bufs(c);
2286 #endif
2287
2288 88993 av_freep(&c->vLumFilterPos);
2289 88993 av_freep(&c->vChrFilterPos);
2290 88993 av_freep(&c->hLumFilterPos);
2291 88993 av_freep(&c->hChrFilterPos);
2292
2293 #if HAVE_MMX_INLINE
2294 88993 ff_sws_jit_free(c->lumMmxextFilterCode, c->lumMmxextFilterCodeSize);
2295 88993 ff_sws_jit_free(c->chrMmxextFilterCode, c->chrMmxextFilterCodeSize);
2296 88993 c->lumMmxextFilterCode = NULL;
2297 88993 c->chrMmxextFilterCode = NULL;
2298 #endif /* HAVE_MMX_INLINE */
2299
2300 88993 av_freep(&c->yuvTable);
2301 88993 av_freep(&c->formatConvBuffer);
2302
2303 88993 sws_freeContext(c->cascaded_context[0]);
2304 88993 sws_freeContext(c->cascaded_context[1]);
2305 88993 sws_freeContext(c->cascaded_context[2]);
2306 88993 memset(c->cascaded_context, 0, sizeof(c->cascaded_context));
2307 88993 av_freep(&c->cascaded_tmp[0][0]);
2308 88993 av_freep(&c->cascaded_tmp[1][0]);
2309
2310 88993 av_freep(&c->gamma);
2311 88993 av_freep(&c->inv_gamma);
2312 #if CONFIG_SMALL
2313 av_freep(&c->xyz2rgb.gamma.in);
2314 #endif
2315
2316 88993 av_freep(&c->rgb0_scratch);
2317 88993 av_freep(&c->xyz_scratch);
2318
2319 88993 ff_free_filters(c);
2320
2321 88993 av_free(c);
2322 }
2323
2324 59628 void sws_free_context(SwsContext **pctx)
2325 {
2326 59628 SwsContext *ctx = *pctx;
2327
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 59628 if (!ctx)
2328 ✗ return;
2329
2330 59628 sws_freeContext(ctx);
2331 59628 *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