FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libswscale/utils.c
Date: 2026-05-03 08:24:11
Exec Total Coverage
Lines: 773 1369 56.5%
Functions: 22 44 50.0%
Branches: 661 1230 53.7%
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 #define _SVID_SOURCE // needed for MAP_ANONYMOUS
26 #define _DARWIN_C_SOURCE // needed for MAP_ANON
27 #include <inttypes.h>
28 #include <math.h>
29 #include <stdio.h>
30 #include <string.h>
31 #if HAVE_MMAP
32 #include <sys/mman.h>
33 #if defined(MAP_ANON) && !defined(MAP_ANONYMOUS)
34 #define MAP_ANONYMOUS MAP_ANON
35 #endif
36 #endif
37 #if HAVE_VIRTUALALLOC
38 #include <windows.h>
39 #endif
40
41 #include "libavutil/attributes.h"
42 #include "libavutil/avassert.h"
43 #include "libavutil/cpu.h"
44 #include "libavutil/csp.h"
45 #include "libavutil/emms.h"
46 #include "libavutil/imgutils.h"
47 #include "libavutil/intreadwrite.h"
48 #include "libavutil/libm.h"
49 #include "libavutil/mathematics.h"
50 #include "libavutil/mem.h"
51 #include "libavutil/opt.h"
52 #include "libavutil/pixdesc.h"
53 #include "libavutil/refstruct.h"
54 #include "libavutil/slicethread.h"
55 #include "libavutil/thread.h"
56 #include "libavutil/aarch64/cpu.h"
57 #include "libavutil/ppc/cpu.h"
58 #include "libavutil/x86/asm.h"
59 #include "libavutil/x86/cpu.h"
60 #include "libavutil/loongarch/cpu.h"
61
62 #include "rgb2rgb.h"
63 #include "swscale.h"
64 #include "swscale_internal.h"
65 #include "graph.h"
66
67 #if CONFIG_VULKAN
68 #include "vulkan/ops.h"
69 #endif
70
71 /**
72 * Allocate and return an SwsContext without performing initialization.
73 */
74 3390 static SwsContext *alloc_set_opts(int srcW, int srcH, enum AVPixelFormat srcFormat,
75 int dstW, int dstH, enum AVPixelFormat dstFormat,
76 int flags, const double *param)
77 {
78 3390 SwsContext *sws = sws_alloc_context();
79
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 3390 if (!sws)
80 ✗ return NULL;
81
82 3390 sws->flags = flags;
83 3390 sws->src_w = srcW;
84 3390 sws->src_h = srcH;
85 3390 sws->dst_w = dstW;
86 3390 sws->dst_h = dstH;
87 3390 sws->src_format = srcFormat;
88 3390 sws->dst_format = dstFormat;
89
90
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 3394 for (int i = 0; param && i < SWS_NUM_SCALER_PARAMS; i++)
91 4 sws->scaler_params[i] = param[i];
92
93 3390 return sws;
94 }
95
96 87746 int ff_shuffle_filter_coefficients(SwsInternal *c, int *filterPos,
97 int filterSize, int16_t *filter,
98 int dstW)
99 {
100 #if ARCH_X86_64
101 int i, j, k;
102 87746 int cpu_flags = av_get_cpu_flags();
103
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 87746 if (!filter)
104 ✗ return 0;
105
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 87746 if (EXTERNAL_AVX2_FAST(cpu_flags) && !(cpu_flags & AV_CPU_FLAG_SLOW_GATHER)) {
106
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 266 if ((c->srcBpc == 8) && (c->dstBpc <= 14)) {
107 180 int16_t *filterCopy = NULL;
108
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 180 if (filterSize > 4) {
109 30 filterCopy = av_malloc_array(dstW, filterSize * sizeof(*filterCopy));
110
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 30 if (!filterCopy)
111 ✗ return AVERROR(ENOMEM);
112 30 memcpy(filterCopy, filter, dstW * filterSize * sizeof(int16_t));
113 }
114 // Do not swap filterPos for pixels which won't be processed by
115 // the main loop.
116
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 13536 for (i = 0; i + 16 <= dstW; i += 16) {
117 13356 FFSWAP(int, filterPos[i + 2], filterPos[i + 4]);
118 13356 FFSWAP(int, filterPos[i + 3], filterPos[i + 5]);
119 13356 FFSWAP(int, filterPos[i + 10], filterPos[i + 12]);
120 13356 FFSWAP(int, filterPos[i + 11], filterPos[i + 13]);
121 }
122
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 180 if (filterSize > 4) {
123 // 16 pixels are processed at a time.
124
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 360 for (i = 0; i + 16 <= dstW; i += 16) {
125 // 4 filter coeffs are processed at a time.
126
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 2112 for (k = 0; k + 4 <= filterSize; k += 4) {
127
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 30294 for (j = 0; j < 16; ++j) {
128 28512 int from = (i + j) * filterSize + k;
129 28512 int to = i * filterSize + j * 4 + k * 16;
130 28512 memcpy(&filter[to], &filterCopy[from], 4 * sizeof(int16_t));
131 }
132 }
133 }
134 // 4 pixels are processed at a time in the tail.
135
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 50 for (; i < dstW; i += 4) {
136 // 4 filter coeffs are processed at a time.
137 20 int rem = dstW - i >= 4 ? 4 : dstW - i;
138
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 128 for (k = 0; k + 4 <= filterSize; k += 4) {
139
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 540 for (j = 0; j < rem; ++j) {
140 432 int from = (i + j) * filterSize + k;
141 432 int to = i * filterSize + j * 4 + k * 4;
142 432 memcpy(&filter[to], &filterCopy[from], 4 * sizeof(int16_t));
143 }
144 }
145 }
146 }
147 180 av_free(filterCopy);
148 }
149 }
150 #endif
151 87746 return 0;
152 }
153
154 ✗ static double getSplineCoeff(double a, double b, double c, double d,
155 double dist)
156 {
157 ✗ if (dist <= 1.0)
158 ✗ return ((d * dist + c) * dist + b) * dist + a;
159 else
160 ✗ return getSplineCoeff(0.0,
161 ✗ b + 2.0 * c + 3.0 * d,
162 ✗ c + 3.0 * d,
163 ✗ -b - 3.0 * c - 6.0 * d,
164 dist - 1.0);
165 }
166
167 346952 static av_cold int get_local_pos(SwsInternal *s, int chr_subsample, int pos, int dir)
168 {
169
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 346952 if (pos == -1 || pos <= -513) {
170 148489 pos = (128 << chr_subsample) - 128;
171 }
172 346952 pos += 128; // relative to ideal left edge
173 346952 return pos >> chr_subsample;
174 }
175
176 typedef struct {
177 int flag; ///< flag associated to the algorithm
178 const char *description; ///< human-readable description
179 int size_factor; ///< size factor used when initing the filters
180 } ScaleAlgorithm;
181
182 static const ScaleAlgorithm scale_algorithms[] = {
183 { SWS_AREA, "area averaging", 1 /* downscale only, for upscale it is bilinear */ },
184 { SWS_BICUBIC, "bicubic", 4 },
185 { SWS_BICUBLIN, "luma bicubic / chroma bilinear", -1 },
186 { SWS_BILINEAR, "bilinear", 2 },
187 { SWS_FAST_BILINEAR, "fast bilinear", -1 },
188 { SWS_GAUSS, "Gaussian", 8 /* infinite ;) */ },
189 { SWS_LANCZOS, "Lanczos", -1 /* custom */ },
190 { SWS_POINT, "nearest neighbor / point", -1 },
191 { SWS_SINC, "sinc", 20 /* infinite ;) */ },
192 { SWS_SPLINE, "bicubic spline", 20 /* infinite :)*/ },
193 { SWS_X, "experimental", 8 },
194 };
195
196 173476 static av_cold int initFilter(int16_t **outFilter, int32_t **filterPos,
197 int *outFilterSize, int xInc, int srcW,
198 int dstW, int filterAlign, int one,
199 int scaler, int flags, int cpu_flags,
200 SwsVector *srcFilter, SwsVector *dstFilter,
201 double param[SWS_NUM_SCALER_PARAMS], int srcPos, int dstPos)
202 {
203 int i;
204 int filterSize;
205 int filter2Size;
206 int minFilterSize;
207 173476 int64_t *filter = NULL;
208 173476 int64_t *filter2 = NULL;
209 173476 const int64_t fone = 1LL << (54 - FFMIN(av_log2(srcW/dstW), 8));
210 173476 int ret = -1;
211
212 173476 emms_c(); // FIXME should not be required but IS (even for non-MMX versions)
213
214 // NOTE: the +3 is for the MMX(+1) / SSE(+3) scaler which reads over the end
215
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 173476 if (!FF_ALLOC_TYPED_ARRAY(*filterPos, dstW + 3))
216 ✗ goto nomem;
217
218
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 323731 if (FFABS(xInc - 0x10000) < 10 && srcPos == dstPos) { // unscaled
219 int i;
220 150255 filterSize = 1;
221
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 150255 if (!FF_ALLOCZ_TYPED_ARRAY(filter, dstW * filterSize))
222 ✗ goto nomem;
223
224
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 37637922 for (i = 0; i < dstW; i++) {
225 37487667 filter[i * filterSize] = fone;
226 37487667 (*filterPos)[i] = i;
227 }
228
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 23221 } else if (scaler == SWS_POINT) { // lame looking point sampling mode
229 int i;
230 int64_t xDstInSrc;
231 301 filterSize = 1;
232
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 301 if (!FF_ALLOC_TYPED_ARRAY(filter, dstW * filterSize))
233 ✗ goto nomem;
234
235 301 xDstInSrc = ((dstPos*(int64_t)xInc)>>8) - ((srcPos*0x8000LL)>>7);
236
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 87392 for (i = 0; i < dstW; i++) {
237 87091 int xx = (xDstInSrc - ((filterSize - 1) << 15) + (1 << 15)) >> 16;
238
239 87091 (*filterPos)[i] = xx;
240 87091 filter[i] = fone;
241 87091 xDstInSrc += xInc;
242 }
243
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 22920 } else if ((xInc <= (1 << 16) && (scaler == SWS_AREA)) ||
244 88 (scaler == SWS_FAST_BILINEAR)) { // bilinear upscale
245 int i;
246 int64_t xDstInSrc;
247 88 filterSize = 2;
248
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 88 if (!FF_ALLOC_TYPED_ARRAY(filter, dstW * filterSize))
249 ✗ goto nomem;
250
251 88 xDstInSrc = ((dstPos*(int64_t)xInc)>>8) - ((srcPos*0x8000LL)>>7);
252
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 157324 for (i = 0; i < dstW; i++) {
253 157236 int xx = (xDstInSrc - ((filterSize - 1) << 15) + (1 << 15)) >> 16;
254 int j;
255
256 157236 (*filterPos)[i] = xx;
257 // bilinear upscale / linear interpolate / area averaging
258
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 471708 for (j = 0; j < filterSize; j++) {
259 314472 int64_t coeff = fone - FFABS((int64_t)xx * (1 << 16) - xDstInSrc) * (fone >> 16);
260
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 314472 if (coeff < 0)
261 ✗ coeff = 0;
262 314472 filter[i * filterSize + j] = coeff;
263 314472 xx++;
264 }
265 157236 xDstInSrc += xInc;
266 }
267 } else {
268 int64_t xDstInSrc;
269 22832 int sizeFactor = -1;
270
271
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 46280 for (i = 0; i < FF_ARRAY_ELEMS(scale_algorithms); i++) {
272
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 46280 if (scaler == scale_algorithms[i].flag && scale_algorithms[i].size_factor > 0) {
273 22832 sizeFactor = scale_algorithms[i].size_factor;
274 22832 break;
275 }
276 }
277
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 22832 if (scaler == SWS_LANCZOS)
278 ✗ sizeFactor = param[0] != SWS_PARAM_DEFAULT ? ceil(2 * param[0]) : 6;
279
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 22832 av_assert0(sizeFactor > 0);
280
281
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 22832 if (sizeFactor > 50) {
282 ✗ ret = AVERROR(EINVAL);
283 ✗ goto fail;
284 }
285
286
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 22832 if (xInc <= 1 << 16)
287 13521 filterSize = 1 + sizeFactor; // upscale
288 else
289 9311 filterSize = 1 + (sizeFactor * srcW + dstW - 1) / dstW;
290
291
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 22832 filterSize = FFMIN(filterSize, srcW - 2);
292 22832 filterSize = FFMAX(filterSize, 1);
293
294 22832 filter = av_malloc_array(dstW, filterSize * sizeof(*filter));
295
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 22832 if (!filter)
296 ✗ goto nomem;
297 22832 xDstInSrc = ((dstPos*(int64_t)xInc)>>7) - ((srcPos*0x10000LL)>>7);
298
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 8233876 for (i = 0; i < dstW; i++) {
299 8211044 int xx = (xDstInSrc - (filterSize - 2) * (1LL<<16)) / (1 << 17);
300 int j;
301 8211044 (*filterPos)[i] = xx;
302
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 55669188 for (j = 0; j < filterSize; j++) {
303 47458144 int64_t d = (FFABS(((int64_t)xx * (1 << 17)) - xDstInSrc)) << 13;
304 double floatd;
305 int64_t coeff;
306
307
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 47458144 if (xInc > 1 << 16)
308 13571057 d = d * dstW / srcW;
309 47458144 floatd = d * (1.0 / (1 << 30));
310
311
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 47458144 if (scaler == SWS_BICUBIC) {
312
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 46764205 int64_t B = (param[0] != SWS_PARAM_DEFAULT ? param[0] : 0) * (1 << 24);
313
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 46764205 int64_t C = (param[1] != SWS_PARAM_DEFAULT ? param[1] : 0.6) * (1 << 24);
314
315
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 46764205 if (d >= 1LL << 31) {
316 8296545 coeff = 0.0;
317 } else {
318 38467660 int64_t dd = (d * d) >> 30;
319 38467660 int64_t ddd = (dd * d) >> 30;
320
321
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 38467660 if (d < 1LL << 30)
322 19247020 coeff = (12 * (1 << 24) - 9 * B - 6 * C) * ddd +
323 19247020 (-18 * (1 << 24) + 12 * B + 6 * C) * dd +
324 19247020 (6 * (1 << 24) - 2 * B) * (1 << 30);
325 else
326 19220640 coeff = (-B - 6 * C) * ddd +
327 19220640 (6 * B + 30 * C) * dd +
328 19220640 (-12 * B - 48 * C) * d +
329 19220640 (8 * B + 24 * C) * (1 << 30);
330 }
331 46764205 coeff /= (1LL<<54)/fone;
332
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 693939 } else if (scaler == SWS_X) {
333 ✗ double A = param[0] != SWS_PARAM_DEFAULT ? param[0] : 1.0;
334 double c;
335
336 ✗ if (floatd < 1.0)
337 ✗ c = cos(floatd * M_PI);
338 else
339 ✗ c = -1.0;
340 ✗ if (c < 0.0)
341 ✗ c = -pow(-c, A);
342 else
343 ✗ c = pow(c, A);
344 ✗ coeff = (c * 0.5 + 0.5) * fone;
345
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 693939 } else if (scaler == SWS_AREA) {
346 288927 int64_t d2 = d - (1 << 29);
347
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 288927 if (d2 * xInc < -(1LL << (29 + 16)))
348 218924 coeff = 1.0 * (1LL << (30 + 16));
349
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 70003 else if (d2 * xInc < (1LL << (29 + 16)))
350 60908 coeff = -d2 * xInc + (1LL << (29 + 16));
351 else
352 9095 coeff = 0.0;
353 288927 coeff *= fone >> (30 + 16);
354
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 405012 } else if (scaler == SWS_GAUSS) {
355 ✗ double p = param[0] != SWS_PARAM_DEFAULT ? param[0] : 3.0;
356 ✗ coeff = exp2(-p * floatd * floatd) * fone;
357
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 405012 } else if (scaler == SWS_SINC) {
358 ✗ coeff = (d ? sin(floatd * M_PI) / (floatd * M_PI) : 1.0) * fone;
359
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 405012 } else if (scaler == SWS_LANCZOS) {
360 ✗ double p = param[0] != SWS_PARAM_DEFAULT ? param[0] : 3.0;
361 ✗ coeff = (d ? sin(floatd * M_PI) * sin(floatd * M_PI / p) /
362 ✗ (floatd * floatd * M_PI * M_PI / p) : 1.0) * fone;
363 ✗ if (floatd > p)
364 ✗ coeff = 0;
365
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 405012 } else if (scaler == SWS_BILINEAR) {
366 405012 coeff = (1 << 30) - d;
367
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 405012 if (coeff < 0)
368 49460 coeff = 0;
369 405012 coeff *= fone >> 30;
370 ✗ } else if (scaler == SWS_SPLINE) {
371 ✗ double p = -2.196152422706632;
372 ✗ coeff = getSplineCoeff(1.0, 0.0, p, -p - 1.0, floatd) * fone;
373 } else {
374 ✗ av_assert0(0);
375 }
376
377 47458144 filter[i * filterSize + j] = coeff;
378 47458144 xx++;
379 }
380 8211044 xDstInSrc += 2LL * xInc;
381 }
382 }
383
384 /* apply src & dst Filter to filter -> filter2
385 * av_free(filter);
386 */
387
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 173476 av_assert0(filterSize > 0);
388 173476 filter2Size = filterSize;
389
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 173476 if (srcFilter)
390 ✗ filter2Size += srcFilter->length - 1;
391
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 173476 if (dstFilter)
392 ✗ filter2Size += dstFilter->length - 1;
393
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 173476 av_assert0(filter2Size > 0);
394 173476 filter2 = av_calloc(dstW, filter2Size * sizeof(*filter2));
395
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 173476 if (!filter2)
396 ✗ goto nomem;
397
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 46116514 for (i = 0; i < dstW; i++) {
398 int j, k;
399
400
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 45943038 if (srcFilter) {
401 ✗ for (k = 0; k < srcFilter->length; k++) {
402 ✗ for (j = 0; j < filterSize; j++)
403 ✗ filter2[i * filter2Size + k + j] +=
404 ✗ srcFilter->coeff[k] * filter[i * filterSize + j];
405 }
406 } else {
407
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 131290412 for (j = 0; j < filterSize; j++)
408 85347374 filter2[i * filter2Size + j] = filter[i * filterSize + j];
409 }
410 // FIXME dstFilter
411
412 45943038 (*filterPos)[i] += (filterSize - 1) / 2 - (filter2Size - 1) / 2;
413 }
414 173476 av_freep(&filter);
415
416 /* try to reduce the filter-size (step1 find size and shift left) */
417 // Assume it is near normalized (*0.5 or *2.0 is OK but * 0.001 is not).
418 173476 minFilterSize = 0;
419
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 46116514 for (i = dstW - 1; i >= 0; i--) {
420 45943038 int min = filter2Size;
421 int j;
422 45943038 int64_t cutOff = 0.0;
423
424 /* get rid of near zero elements on the left by shifting left */
425
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 49506461 for (j = 0; j < filter2Size; j++) {
426 int k;
427 49506461 cutOff += FFABS(filter2[i * filter2Size]);
428
429
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 49506461 if (cutOff > SWS_MAX_REDUCE_CUTOFF * fone)
430 45940217 break;
431
432 /* preserve monotonicity because the core can't handle the
433 * filter otherwise */
434
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 3566244 if (i < dstW - 1 && (*filterPos)[i] >= (*filterPos)[i + 1])
435 2821 break;
436
437 // move filter coefficients left
438
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 18698268 for (k = 1; k < filter2Size; k++)
439 15134845 filter2[i * filter2Size + k - 1] = filter2[i * filter2Size + k];
440 3563423 filter2[i * filter2Size + k - 1] = 0;
441 3563423 (*filterPos)[i]++;
442 }
443
444 45943038 cutOff = 0;
445 /* count near zeros on the right */
446
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 54364010 for (j = filter2Size - 1; j > 0; j--) {
447 16788306 cutOff += FFABS(filter2[i * filter2Size + j]);
448
449
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 16788306 if (cutOff > SWS_MAX_REDUCE_CUTOFF * fone)
450 8367334 break;
451 8420972 min--;
452 }
453
454
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 45943038 if (min > minFilterSize)
455 174184 minFilterSize = min;
456 }
457
458 if (PPC_ALTIVEC(cpu_flags)) {
459 // we can handle the special case 4, so we don't want to go the full 8
460 if (minFilterSize < 5)
461 filterAlign = 4;
462
463 /* We really don't want to waste our time doing useless computation, so
464 * fall back on the scalar C code for very small filters.
465 * Vectorizing is worth it only if you have a decent-sized vector. */
466 if (minFilterSize < 3)
467 filterAlign = 1;
468 }
469
470
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 173476 if (HAVE_MMX && cpu_flags & AV_CPU_FLAG_MMX || have_neon(cpu_flags)) {
471 // special case for unscaled vertical filtering
472
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 70192 if (minFilterSize == 1 && filterAlign == 2)
473 33830 filterAlign = 1;
474 }
475
476 if (have_lasx(cpu_flags) || have_lsx(cpu_flags)) {
477 int reNum = minFilterSize & (0x07);
478
479 if (minFilterSize < 5)
480 filterAlign = 4;
481 if (reNum < 3)
482 filterAlign = 1;
483 }
484
485
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 173476 av_assert0(minFilterSize > 0);
486 173476 filterSize = (minFilterSize + (filterAlign - 1)) & (~(filterAlign - 1));
487
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 173476 av_assert0(filterSize > 0);
488 173476 filter = av_malloc_array(dstW, filterSize * sizeof(*filter));
489
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 173476 if (!filter)
490 ✗ goto nomem;
491
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 173476 if (filterSize >= MAX_FILTER_SIZE * 16 /
492
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 173476 ((flags & SWS_ACCURATE_RND) ? APCK_SIZE : 16)) {
493 ✗ ret = RETCODE_USE_CASCADE;
494 ✗ goto fail;
495 }
496 173476 *outFilterSize = filterSize;
497
498
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 173476 if (flags & SWS_PRINT_INFO)
499 ✗ av_log(NULL, AV_LOG_VERBOSE,
500 "SwScaler: reducing / aligning filtersize %d -> %d\n",
501 filter2Size, filterSize);
502 /* try to reduce the filter-size (step2 reduce it) */
503
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 46116514 for (i = 0; i < dstW; i++) {
504 int j;
505
506
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 143250221 for (j = 0; j < filterSize; j++) {
507
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 97307183 if (j >= filter2Size)
508 20234946 filter[i * filterSize + j] = 0;
509 else
510 77072237 filter[i * filterSize + j] = filter2[i * filter2Size + j];
511
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 97307183 if ((flags & SWS_BITEXACT) && j >= minFilterSize)
512 18888576 filter[i * filterSize + j] = 0;
513 }
514 }
515
516 // FIXME try to align filterPos if possible
517
518 // fix borders
519
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 46116514 for (i = 0; i < dstW; i++) {
520 int j;
521
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 45943038 if ((*filterPos)[i] < 0) {
522 // move filter coefficients left to compensate for filterPos
523
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 279901 for (j = 1; j < filterSize; j++) {
524 231432 int left = FFMAX(j + (*filterPos)[i], 0);
525 231432 filter[i * filterSize + left] += filter[i * filterSize + j];
526 231432 filter[i * filterSize + j] = 0;
527 }
528 48469 (*filterPos)[i]= 0;
529 }
530
531
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 45943038 if ((*filterPos)[i] + filterSize > srcW) {
532 169242 int shift = (*filterPos)[i] + FFMIN(filterSize - srcW, 0);
533 169242 int64_t acc = 0;
534
535
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 934623 for (j = filterSize - 1; j >= 0; j--) {
536
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 765381 if ((*filterPos)[i] + j >= srcW) {
537 312353 acc += filter[i * filterSize + j];
538 312353 filter[i * filterSize + j] = 0;
539 }
540 }
541
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 934623 for (j = filterSize - 1; j >= 0; j--) {
542
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 765381 if (j < shift) {
543 312353 filter[i * filterSize + j] = 0;
544 } else {
545 453028 filter[i * filterSize + j] = filter[i * filterSize + j - shift];
546 }
547 }
548
549 169242 (*filterPos)[i]-= shift;
550 169242 filter[i * filterSize + srcW - 1 - (*filterPos)[i]] += acc;
551 }
552
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 45943038 av_assert0((*filterPos)[i] >= 0);
553
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 45943038 av_assert0((*filterPos)[i] < srcW);
554
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 45943038 if ((*filterPos)[i] + filterSize > srcW) {
555 ✗ for (j = 0; j < filterSize; j++) {
556 ✗ av_assert0((*filterPos)[i] + j < srcW || !filter[i * filterSize + j]);
557 }
558 }
559 }
560
561 // Note the +1 is for the MMX scaler which reads over the end
562 /* align at 16 for AltiVec (needed by hScale_altivec_real) */
563 173476 *outFilter = av_calloc(dstW + 3, *outFilterSize * sizeof(**outFilter));
564
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 173476 if (!*outFilter)
565 ✗ goto nomem;
566
567 /* normalize & store in outFilter */
568
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 46116514 for (i = 0; i < dstW; i++) {
569 int j;
570 45943038 int64_t error = 0;
571 45943038 int64_t sum = 0;
572
573
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 143250221 for (j = 0; j < filterSize; j++) {
574 97307183 sum += filter[i * filterSize + j];
575 }
576 45943038 sum = (sum + one / 2) / one;
577
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 45943038 if (!sum) {
578 ✗ av_log(NULL, AV_LOG_WARNING, "SwScaler: zero vector in scaling\n");
579 ✗ sum = 1;
580 }
581
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 143250221 for (j = 0; j < *outFilterSize; j++) {
582 97307183 int64_t v = filter[i * filterSize + j] + error;
583
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 97307183 int intV = ROUNDED_DIV(v, sum);
584 97307183 (*outFilter)[i * (*outFilterSize) + j] = intV;
585 97307183 error = v - intV * sum;
586 }
587 }
588
589 173476 (*filterPos)[dstW + 0] =
590 173476 (*filterPos)[dstW + 1] =
591 173476 (*filterPos)[dstW + 2] = (*filterPos)[dstW - 1]; /* the MMX/SSE scaler will
592 * read over the end */
593
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 567851 for (i = 0; i < *outFilterSize; i++) {
594 394375 int k = (dstW - 1) * (*outFilterSize) + i;
595 394375 (*outFilter)[k + 1 * (*outFilterSize)] =
596 394375 (*outFilter)[k + 2 * (*outFilterSize)] =
597 394375 (*outFilter)[k + 3 * (*outFilterSize)] = (*outFilter)[k];
598 }
599
600 173476 ret = 0;
601 173476 goto done;
602 ✗ nomem:
603 ✗ ret = AVERROR(ENOMEM);
604 ✗ fail:
605 ✗ if(ret < 0)
606 ✗ av_log(NULL, ret == RETCODE_USE_CASCADE ? AV_LOG_DEBUG : AV_LOG_ERROR, "sws: initFilter failed\n");
607 ✗ done:
608 173476 av_free(filter);
609 173476 av_free(filter2);
610 173476 return ret;
611 }
612
613 29788 static void fill_rgb2yuv_table(SwsInternal *c, const int table[4], int dstRange)
614 {
615 int64_t W, V, Z, Cy, Cu, Cv;
616 29788 int64_t vr = table[0];
617 29788 int64_t ub = table[1];
618 29788 int64_t ug = -table[2];
619 29788 int64_t vg = -table[3];
620 29788 int64_t ONE = 65536;
621 29788 int64_t cy = ONE;
622 29788 uint8_t *p = (uint8_t*)c->input_rgb2yuv_table;
623 int i;
624 static const int8_t map[] = {
625 BY_IDX, GY_IDX, -1 , BY_IDX, BY_IDX, GY_IDX, -1 , BY_IDX,
626 RY_IDX, -1 , GY_IDX, RY_IDX, RY_IDX, -1 , GY_IDX, RY_IDX,
627 RY_IDX, GY_IDX, -1 , RY_IDX, RY_IDX, GY_IDX, -1 , RY_IDX,
628 BY_IDX, -1 , GY_IDX, BY_IDX, BY_IDX, -1 , GY_IDX, BY_IDX,
629 BU_IDX, GU_IDX, -1 , BU_IDX, BU_IDX, GU_IDX, -1 , BU_IDX,
630 RU_IDX, -1 , GU_IDX, RU_IDX, RU_IDX, -1 , GU_IDX, RU_IDX,
631 RU_IDX, GU_IDX, -1 , RU_IDX, RU_IDX, GU_IDX, -1 , RU_IDX,
632 BU_IDX, -1 , GU_IDX, BU_IDX, BU_IDX, -1 , GU_IDX, BU_IDX,
633 BV_IDX, GV_IDX, -1 , BV_IDX, BV_IDX, GV_IDX, -1 , BV_IDX,
634 RV_IDX, -1 , GV_IDX, RV_IDX, RV_IDX, -1 , GV_IDX, RV_IDX,
635 RV_IDX, GV_IDX, -1 , RV_IDX, RV_IDX, GV_IDX, -1 , RV_IDX,
636 BV_IDX, -1 , GV_IDX, BV_IDX, BV_IDX, -1 , GV_IDX, BV_IDX,
637 RY_IDX, BY_IDX, RY_IDX, BY_IDX, RY_IDX, BY_IDX, RY_IDX, BY_IDX,
638 BY_IDX, RY_IDX, BY_IDX, RY_IDX, BY_IDX, RY_IDX, BY_IDX, RY_IDX,
639 GY_IDX, -1 , GY_IDX, -1 , GY_IDX, -1 , GY_IDX, -1 ,
640 -1 , GY_IDX, -1 , GY_IDX, -1 , GY_IDX, -1 , GY_IDX,
641 RU_IDX, BU_IDX, RU_IDX, BU_IDX, RU_IDX, BU_IDX, RU_IDX, BU_IDX,
642 BU_IDX, RU_IDX, BU_IDX, RU_IDX, BU_IDX, RU_IDX, BU_IDX, RU_IDX,
643 GU_IDX, -1 , GU_IDX, -1 , GU_IDX, -1 , GU_IDX, -1 ,
644 -1 , GU_IDX, -1 , GU_IDX, -1 , GU_IDX, -1 , GU_IDX,
645 RV_IDX, BV_IDX, RV_IDX, BV_IDX, RV_IDX, BV_IDX, RV_IDX, BV_IDX,
646 BV_IDX, RV_IDX, BV_IDX, RV_IDX, BV_IDX, RV_IDX, BV_IDX, RV_IDX,
647 GV_IDX, -1 , GV_IDX, -1 , GV_IDX, -1 , GV_IDX, -1 ,
648 -1 , GV_IDX, -1 , GV_IDX, -1 , GV_IDX, -1 , GV_IDX, //23
649 -1 , -1 , -1 , -1 , -1 , -1 , -1 , -1 , //24
650 -1 , -1 , -1 , -1 , -1 , -1 , -1 , -1 , //25
651 -1 , -1 , -1 , -1 , -1 , -1 , -1 , -1 , //26
652 -1 , -1 , -1 , -1 , -1 , -1 , -1 , -1 , //27
653 -1 , -1 , -1 , -1 , -1 , -1 , -1 , -1 , //28
654 -1 , -1 , -1 , -1 , -1 , -1 , -1 , -1 , //29
655 -1 , -1 , -1 , -1 , -1 , -1 , -1 , -1 , //30
656 -1 , -1 , -1 , -1 , -1 , -1 , -1 , -1 , //31
657 BY_IDX, GY_IDX, RY_IDX, -1 , -1 , -1 , -1 , -1 , //32
658 BU_IDX, GU_IDX, RU_IDX, -1 , -1 , -1 , -1 , -1 , //33
659 BV_IDX, GV_IDX, RV_IDX, -1 , -1 , -1 , -1 , -1 , //34
660 };
661
662 29788 dstRange = 0; //FIXME range = 1 is handled elsewhere
663
664
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 29788 if (!dstRange) {
665 29788 cy = cy * 255 / 219;
666 } else {
667 ✗ vr = vr * 224 / 255;
668 ✗ ub = ub * 224 / 255;
669 ✗ ug = ug * 224 / 255;
670 ✗ vg = vg * 224 / 255;
671 }
672
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 29788 W = ROUNDED_DIV(ONE*ONE*ug, ub);
673
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 29788 V = ROUNDED_DIV(ONE*ONE*vg, vr);
674 29788 Z = ONE*ONE-W-V;
675
676
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 29788 Cy = ROUNDED_DIV(cy*Z, ONE);
677
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 29788 Cu = ROUNDED_DIV(ub*Z, ONE);
678
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 29788 Cv = ROUNDED_DIV(vr*Z, ONE);
679
680
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 29788 c->input_rgb2yuv_table[RY_IDX] = -ROUNDED_DIV((1 << RGB2YUV_SHIFT)*V , Cy);
681 29788 c->input_rgb2yuv_table[GY_IDX] = ROUNDED_DIV((1 << RGB2YUV_SHIFT)*ONE*ONE , Cy);
682
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 29788 c->input_rgb2yuv_table[BY_IDX] = -ROUNDED_DIV((1 << RGB2YUV_SHIFT)*W , Cy);
683
684
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 29788 c->input_rgb2yuv_table[RU_IDX] = ROUNDED_DIV((1 << RGB2YUV_SHIFT)*V , Cu);
685 29788 c->input_rgb2yuv_table[GU_IDX] = -ROUNDED_DIV((1 << RGB2YUV_SHIFT)*ONE*ONE , Cu);
686
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 29788 c->input_rgb2yuv_table[BU_IDX] = ROUNDED_DIV((1 << RGB2YUV_SHIFT)*(Z+W) , Cu);
687
688
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 29788 c->input_rgb2yuv_table[RV_IDX] = ROUNDED_DIV((1 << RGB2YUV_SHIFT)*(V+Z) , Cv);
689 29788 c->input_rgb2yuv_table[GV_IDX] = -ROUNDED_DIV((1 << RGB2YUV_SHIFT)*ONE*ONE , Cv);
690
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 29788 c->input_rgb2yuv_table[BV_IDX] = ROUNDED_DIV((1 << RGB2YUV_SHIFT)*W , Cv);
691
692
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 29788 if(/*!dstRange && */!memcmp(table, ff_yuv2rgb_coeffs[SWS_CS_DEFAULT], sizeof(ff_yuv2rgb_coeffs[SWS_CS_DEFAULT]))) {
693 29788 c->input_rgb2yuv_table[BY_IDX] = ((int)(0.114 * 219 / 255 * (1 << RGB2YUV_SHIFT) + 0.5));
694 29788 c->input_rgb2yuv_table[BV_IDX] = (-(int)(0.081 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5));
695 29788 c->input_rgb2yuv_table[BU_IDX] = ((int)(0.500 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5));
696 29788 c->input_rgb2yuv_table[GY_IDX] = ((int)(0.587 * 219 / 255 * (1 << RGB2YUV_SHIFT) + 0.5));
697 29788 c->input_rgb2yuv_table[GV_IDX] = (-(int)(0.419 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5));
698 29788 c->input_rgb2yuv_table[GU_IDX] = (-(int)(0.331 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5));
699 29788 c->input_rgb2yuv_table[RY_IDX] = ((int)(0.299 * 219 / 255 * (1 << RGB2YUV_SHIFT) + 0.5));
700 29788 c->input_rgb2yuv_table[RV_IDX] = ((int)(0.500 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5));
701 29788 c->input_rgb2yuv_table[RU_IDX] = (-(int)(0.169 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5));
702 }
703
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 8370428 for(i=0; i<FF_ARRAY_ELEMS(map); i++)
704
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 8340640 AV_WL16(p + 16*4 + 2*i, map[i] >= 0 ? c->input_rgb2yuv_table[map[i]] : 0);
705 29788 }
706
707 #if CONFIG_SMALL
708 static void init_xyz_tables(uint16_t xyzgamma_tab[4096], uint16_t xyzgammainv_tab[65536],
709 uint16_t rgbgamma_tab[65536], uint16_t rgbgammainv_tab[4096])
710 #else
711 static uint16_t xyzgamma_tab[4096], rgbgammainv_tab[4096];
712 static uint16_t rgbgamma_tab[65536], xyzgammainv_tab[65536];
713 39 static av_cold void init_xyz_tables(void)
714 #endif
715 {
716 39 double xyzgamma = XYZ_GAMMA;
717 39 double rgbgamma = 1.0 / RGB_GAMMA;
718 39 double xyzgammainv = 1.0 / XYZ_GAMMA;
719 39 double rgbgammainv = RGB_GAMMA;
720
721 /* set input gamma vectors */
722
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 159783 for (int i = 0; i < 4096; i++) {
723 159744 xyzgamma_tab[i] = lrint(pow(i / 4095.0, xyzgamma) * 65535.0);
724 159744 rgbgammainv_tab[i] = lrint(pow(i / 4095.0, rgbgammainv) * 65535.0);
725 }
726
727 /* set output gamma vectors */
728
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 2555943 for (int i = 0; i < 65536; i++) {
729 2555904 rgbgamma_tab[i] = lrint(pow(i / 65535.0, rgbgamma) * 4095.0);
730 2555904 xyzgammainv_tab[i] = lrint(pow(i / 65535.0, xyzgammainv) * 4095.0);
731 }
732 39 }
733
734 2492 av_cold int ff_sws_fill_xyztables(SwsInternal *c)
735 {
736 static const int16_t xyz2rgb_matrix[3][3] = {
737 {13270, -6295, -2041},
738 {-3969, 7682, 170},
739 { 228, -835, 4329} };
740 static const int16_t rgb2xyz_matrix[3][3] = {
741 {1689, 1464, 739},
742 { 871, 2929, 296},
743 { 79, 488, 3891} };
744
745
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 2492 if (c->xyz2rgb.gamma.in)
746 1652 return 0;
747
748 840 memcpy(c->xyz2rgb.mat, xyz2rgb_matrix, sizeof(c->xyz2rgb.mat));
749 840 memcpy(c->rgb2xyz.mat, rgb2xyz_matrix, sizeof(c->rgb2xyz.mat));
750
751 #if CONFIG_SMALL
752 c->xyz2rgb.gamma.in = av_malloc(sizeof(uint16_t) * 2 * (4096 + 65536));
753 if (!c->xyz2rgb.gamma.in)
754 return AVERROR(ENOMEM);
755 c->rgb2xyz.gamma.in = c->xyz2rgb.gamma.in + 4096;
756 c->xyz2rgb.gamma.out = c->rgb2xyz.gamma.in + 4096;
757 c->rgb2xyz.gamma.out = c->xyz2rgb.gamma.out + 65536;
758 init_xyz_tables(c->xyz2rgb.gamma.in, c->rgb2xyz.gamma.out,
759 c->xyz2rgb.gamma.out, c->rgb2xyz.gamma.in);
760 #else
761 840 c->xyz2rgb.gamma.in = xyzgamma_tab;
762 840 c->xyz2rgb.gamma.out = rgbgamma_tab;
763 840 c->rgb2xyz.gamma.in = rgbgammainv_tab;
764 840 c->rgb2xyz.gamma.out = xyzgammainv_tab;
765
766 static AVOnce xyz_init_static_once = AV_ONCE_INIT;
767 840 ff_thread_once(&xyz_init_static_once, init_xyz_tables);
768 #endif
769 840 return 0;
770 }
771
772 59180 static int handle_jpeg(/* enum AVPixelFormat */ int *format)
773 {
774
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 59180 switch (*format) {
775 98 case AV_PIX_FMT_YUVJ420P:
776 98 *format = AV_PIX_FMT_YUV420P;
777 98 return 1;
778 16 case AV_PIX_FMT_YUVJ411P:
779 16 *format = AV_PIX_FMT_YUV411P;
780 16 return 1;
781 53 case AV_PIX_FMT_YUVJ422P:
782 53 *format = AV_PIX_FMT_YUV422P;
783 53 return 1;
784 213 case AV_PIX_FMT_YUVJ444P:
785 213 *format = AV_PIX_FMT_YUV444P;
786 213 return 1;
787 44 case AV_PIX_FMT_YUVJ440P:
788 44 *format = AV_PIX_FMT_YUV440P;
789 44 return 1;
790 2532 case AV_PIX_FMT_GRAY8:
791 case AV_PIX_FMT_YA8:
792 case AV_PIX_FMT_GRAY9LE:
793 case AV_PIX_FMT_GRAY9BE:
794 case AV_PIX_FMT_GRAY10LE:
795 case AV_PIX_FMT_GRAY10BE:
796 case AV_PIX_FMT_GRAY12LE:
797 case AV_PIX_FMT_GRAY12BE:
798 case AV_PIX_FMT_GRAY14LE:
799 case AV_PIX_FMT_GRAY14BE:
800 case AV_PIX_FMT_GRAY16LE:
801 case AV_PIX_FMT_GRAY16BE:
802 case AV_PIX_FMT_YA16BE:
803 case AV_PIX_FMT_YA16LE:
804 2532 return 1;
805 56224 default:
806 56224 return 0;
807 }
808 }
809
810 308604 static int handle_0alpha(/* enum AVPixelFormat */ int *format)
811 {
812
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 308604 switch (*format) {
813 170 case AV_PIX_FMT_0BGR : *format = AV_PIX_FMT_ABGR ; return 1;
814 202 case AV_PIX_FMT_BGR0 : *format = AV_PIX_FMT_BGRA ; return 4;
815 170 case AV_PIX_FMT_0RGB : *format = AV_PIX_FMT_ARGB ; return 1;
816 170 case AV_PIX_FMT_RGB0 : *format = AV_PIX_FMT_RGBA ; return 4;
817 307892 default: return 0;
818 }
819 }
820
821 308604 static int handle_xyz(/* enum AVPixelFormat */ int *format)
822 {
823
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 308604 switch (*format) {
824 403 case AV_PIX_FMT_XYZ12BE : *format = AV_PIX_FMT_RGB48BE; return 1;
825 427 case AV_PIX_FMT_XYZ12LE : *format = AV_PIX_FMT_RGB48LE; return 1;
826 307774 default: return 0;
827 }
828 }
829
830 154302 static int handle_formats(SwsContext *sws)
831 {
832 154302 SwsInternal *c = sws_internal(sws);
833 154302 c->src0Alpha |= handle_0alpha(&sws->src_format);
834 154302 c->dst0Alpha |= handle_0alpha(&sws->dst_format);
835 154302 c->srcXYZ |= handle_xyz(&sws->src_format);
836 154302 c->dstXYZ |= handle_xyz(&sws->dst_format);
837
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 154302 if (c->srcXYZ || c->dstXYZ)
838 2478 return ff_sws_fill_xyztables(c);
839 else
840 151824 return 0;
841 }
842
843 254720 static int range_override_needed(enum AVPixelFormat format)
844 {
845
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 254720 return !isYUV(format) && !isGray(format);
846 }
847
848 101594 int sws_setColorspaceDetails(SwsContext *sws, const int inv_table[4],
849 int srcRange, const int table[4], int dstRange,
850 int brightness, int contrast, int saturation)
851 {
852 101594 SwsInternal *c = sws_internal(sws);
853 const AVPixFmtDescriptor *desc_dst;
854 const AVPixFmtDescriptor *desc_src;
855 101594 int ret, need_reinit = 0;
856
857
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 101594 if (c->nb_slice_ctx) {
858 ✗ int parent_ret = 0;
859 ✗ for (int i = 0; i < c->nb_slice_ctx; i++) {
860 ✗ int ret = sws_setColorspaceDetails(c->slice_ctx[i], inv_table,
861 srcRange, table, dstRange,
862 brightness, contrast, saturation);
863 ✗ if (ret < 0)
864 ✗ parent_ret = ret;
865 }
866
867 ✗ return parent_ret;
868 }
869
870 101594 ret = handle_formats(sws);
871
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 101594 if (ret < 0)
872 ✗ return ret;
873 101594 desc_dst = av_pix_fmt_desc_get(sws->dst_format);
874 101594 desc_src = av_pix_fmt_desc_get(sws->src_format);
875
876
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 101594 if(range_override_needed(sws->dst_format))
877 26343 dstRange = 0;
878
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 101594 if(range_override_needed(sws->src_format))
879 38265 srcRange = 0;
880
881
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 101594 if (sws->src_range != srcRange ||
882
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 91235 sws->dst_range != dstRange ||
883
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884
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885
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886
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 48886 memcmp(c->srcColorspaceTable, inv_table, sizeof(int) * 4) ||
887
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 48744 memcmp(c->dstColorspaceTable, table, sizeof(int) * 4)
888 )
889 52850 need_reinit = 1;
890
891 101594 memmove(c->srcColorspaceTable, inv_table, sizeof(int) * 4);
892 101594 memmove(c->dstColorspaceTable, table, sizeof(int) * 4);
893
894
895
896 101594 c->brightness = brightness;
897 101594 c->contrast = contrast;
898 101594 c->saturation = saturation;
899 101594 sws->src_range = srcRange;
900 101594 sws->dst_range = dstRange;
901
902
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 101594 if (need_reinit)
903 52850 ff_sws_init_range_convert(c);
904
905 101594 c->dstFormatBpp = av_get_bits_per_pixel(desc_dst);
906 101594 c->srcFormatBpp = av_get_bits_per_pixel(desc_src);
907
908
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 101594 if (c->cascaded_context[c->cascaded_mainindex])
909 ✗ return sws_setColorspaceDetails(c->cascaded_context[c->cascaded_mainindex],inv_table, srcRange,table, dstRange, brightness, contrast, saturation);
910
911
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 101594 if (!need_reinit)
912 48744 return 0;
913
914
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 52850 if ((isYUV(sws->dst_format) || isGray(sws->dst_format)) && (isYUV(sws->src_format) || isGray(sws->src_format))) {
915
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 23062 if (!c->cascaded_context[0] &&
916
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917
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 1 sws->src_w && sws->src_h && sws->dst_w && sws->dst_h) {
918 enum AVPixelFormat tmp_format;
919 int tmp_width, tmp_height;
920 1 int srcW = sws->src_w;
921 1 int srcH = sws->src_h;
922 1 int dstW = sws->dst_w;
923 1 int dstH = sws->dst_h;
924 int ret;
925 1 av_log(c, AV_LOG_VERBOSE, "YUV color matrix differs for YUV->YUV, using intermediate RGB to convert\n");
926
927
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 1 if (isNBPS(sws->dst_format) || is16BPS(sws->dst_format)) {
928 ✗ if (isALPHA(sws->src_format) && isALPHA(sws->dst_format)) {
929 ✗ tmp_format = AV_PIX_FMT_BGRA64;
930 } else {
931 ✗ tmp_format = AV_PIX_FMT_BGR48;
932 }
933 } else {
934
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 1 if (isALPHA(sws->src_format) && isALPHA(sws->dst_format)) {
935 ✗ tmp_format = AV_PIX_FMT_BGRA;
936 } else {
937 1 tmp_format = AV_PIX_FMT_BGR24;
938 }
939 }
940
941
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 1 if (srcW*srcH > dstW*dstH) {
942 ✗ tmp_width = dstW;
943 ✗ tmp_height = dstH;
944 } else {
945 1 tmp_width = srcW;
946 1 tmp_height = srcH;
947 }
948
949 1 ret = av_image_alloc(c->cascaded_tmp[0], c->cascaded_tmpStride[0],
950 tmp_width, tmp_height, tmp_format, 64);
951
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 1 if (ret < 0)
952 ✗ return ret;
953
954 2 c->cascaded_context[0] = alloc_set_opts(srcW, srcH, sws->src_format,
955 tmp_width, tmp_height, tmp_format,
956 1 sws->flags, sws->scaler_params);
957
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 1 if (!c->cascaded_context[0])
958 ✗ return -1;
959
960 1 c->cascaded_context[0]->alpha_blend = sws->alpha_blend;
961 1 ret = sws_init_context(c->cascaded_context[0], NULL , NULL);
962
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 1 if (ret < 0)
963 ✗ return ret;
964 //we set both src and dst depending on that the RGB side will be ignored
965 1 sws_setColorspaceDetails(c->cascaded_context[0], inv_table,
966 srcRange, table, dstRange,
967 brightness, contrast, saturation);
968
969 2 c->cascaded_context[1] = alloc_set_opts(tmp_width, tmp_height, tmp_format,
970 1 dstW, dstH, sws->dst_format,
971 1 sws->flags, sws->scaler_params);
972
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 1 if (!c->cascaded_context[1])
973 ✗ return -1;
974 1 c->cascaded_context[1]->src_range = srcRange;
975 1 c->cascaded_context[1]->dst_range = dstRange;
976 1 ret = sws_init_context(c->cascaded_context[1], NULL , NULL);
977
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 1 if (ret < 0)
978 ✗ return ret;
979 1 sws_setColorspaceDetails(c->cascaded_context[1], inv_table,
980 srcRange, table, dstRange,
981 0, 1 << 16, 1 << 16);
982 1 return 0;
983 }
984 //We do not support this combination currently, we need to cascade more contexts to compensate
985
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 23061 if (c->cascaded_context[0] && memcmp(c->dstColorspaceTable, c->srcColorspaceTable, sizeof(int) * 4))
986 ✗ return -1; //AVERROR_PATCHWELCOME;
987 23061 return 0;
988 }
989
990
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 29788 if (!isYUV(sws->dst_format) && !isGray(sws->dst_format)) {
991 14809 ff_yuv2rgb_c_init_tables(c, inv_table, srcRange, brightness,
992 contrast, saturation);
993 // FIXME factorize
994
995 #if ARCH_PPC
996 ff_yuv2rgb_init_tables_ppc(c, inv_table, brightness,
997 contrast, saturation);
998 #endif
999 }
1000
1001 29788 fill_rgb2yuv_table(c, table, dstRange);
1002
1003 29788 return 0;
1004 }
1005
1006 25766 int sws_getColorspaceDetails(SwsContext *sws, int **inv_table,
1007 int *srcRange, int **table, int *dstRange,
1008 int *brightness, int *contrast, int *saturation)
1009 {
1010 25766 SwsInternal *c = sws_internal(sws);
1011
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1012 ✗ return -1;
1013
1014
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 25766 if (c->nb_slice_ctx) {
1015 ✗ return sws_getColorspaceDetails(c->slice_ctx[0], inv_table, srcRange,
1016 table, dstRange, brightness, contrast,
1017 saturation);
1018 }
1019
1020 25766 *inv_table = c->srcColorspaceTable;
1021 25766 *table = c->dstColorspaceTable;
1022
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 25766 *srcRange = range_override_needed(sws->src_format) ? 1 : sws->src_range;
1023
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 25766 *dstRange = range_override_needed(sws->dst_format) ? 1 : sws->dst_range;
1024 25766 *brightness = c->brightness;
1025 25766 *contrast = c->contrast;
1026 25766 *saturation = c->saturation;
1027
1028 25766 return 0;
1029 }
1030
1031 76324 SwsContext *sws_alloc_context(void)
1032 {
1033 76324 SwsInternal *c = av_mallocz(sizeof(*c) + SWSINTERNAL_ADDITIONAL_ASM_SIZE);
1034
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 76324 if (!c)
1035 ✗ return NULL;
1036
1037 76324 c->opts.av_class = &ff_sws_context_class;
1038 76324 av_opt_set_defaults(c);
1039 76324 atomic_init(&c->stride_unaligned_warned, 0);
1040 76324 atomic_init(&c->data_unaligned_warned, 0);
1041
1042 76324 return &c->opts;
1043 }
1044
1045 ✗ static uint16_t * alloc_gamma_tbl(double e)
1046 {
1047 ✗ int i = 0;
1048 uint16_t * tbl;
1049 ✗ tbl = (uint16_t*)av_malloc(sizeof(uint16_t) * 1 << 16);
1050 ✗ if (!tbl)
1051 ✗ return NULL;
1052
1053 ✗ for (i = 0; i < 65536; ++i) {
1054 ✗ tbl[i] = pow(i / 65535.0, e) * 65535.0;
1055 }
1056 ✗ return tbl;
1057 }
1058
1059 1983 static enum AVPixelFormat alphaless_fmt(enum AVPixelFormat fmt)
1060 {
1061
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 1983 switch(fmt) {
1062 32 case AV_PIX_FMT_ARGB: return AV_PIX_FMT_RGB24;
1063 32 case AV_PIX_FMT_RGBA: return AV_PIX_FMT_RGB24;
1064 22 case AV_PIX_FMT_ABGR: return AV_PIX_FMT_BGR24;
1065 240 case AV_PIX_FMT_BGRA: return AV_PIX_FMT_BGR24;
1066 30 case AV_PIX_FMT_YA8: return AV_PIX_FMT_GRAY8;
1067
1068 392 case AV_PIX_FMT_YUVA420P: return AV_PIX_FMT_YUV420P;
1069 3 case AV_PIX_FMT_YUVA422P: return AV_PIX_FMT_YUV422P;
1070 100 case AV_PIX_FMT_YUVA444P: return AV_PIX_FMT_YUV444P;
1071
1072 61 case AV_PIX_FMT_GBRAP: return AV_PIX_FMT_GBRP;
1073
1074 11 case AV_PIX_FMT_GBRAP10LE: return AV_PIX_FMT_GBRP10;
1075 10 case AV_PIX_FMT_GBRAP10BE: return AV_PIX_FMT_GBRP10;
1076
1077 11 case AV_PIX_FMT_GBRAP12LE: return AV_PIX_FMT_GBRP12;
1078 10 case AV_PIX_FMT_GBRAP12BE: return AV_PIX_FMT_GBRP12;
1079
1080 10 case AV_PIX_FMT_GBRAP14LE: return AV_PIX_FMT_GBRP14;
1081 10 case AV_PIX_FMT_GBRAP14BE: return AV_PIX_FMT_GBRP14;
1082
1083 11 case AV_PIX_FMT_GBRAP16LE: return AV_PIX_FMT_GBRP16;
1084 10 case AV_PIX_FMT_GBRAP16BE: return AV_PIX_FMT_GBRP16;
1085
1086 11 case AV_PIX_FMT_RGBA64LE: return AV_PIX_FMT_RGB48;
1087 20 case AV_PIX_FMT_RGBA64BE: return AV_PIX_FMT_RGB48;
1088 11 case AV_PIX_FMT_BGRA64LE: return AV_PIX_FMT_BGR48;
1089 10 case AV_PIX_FMT_BGRA64BE: return AV_PIX_FMT_BGR48;
1090
1091 20 case AV_PIX_FMT_YA16BE: return AV_PIX_FMT_GRAY16;
1092 10 case AV_PIX_FMT_YA16LE: return AV_PIX_FMT_GRAY16;
1093
1094 ✗ case AV_PIX_FMT_YUVA420P9BE: return AV_PIX_FMT_YUV420P9;
1095 ✗ case AV_PIX_FMT_YUVA422P9BE: return AV_PIX_FMT_YUV422P9;
1096 10 case AV_PIX_FMT_YUVA444P9BE: return AV_PIX_FMT_YUV444P9;
1097 ✗ case AV_PIX_FMT_YUVA420P9LE: return AV_PIX_FMT_YUV420P9;
1098 ✗ case AV_PIX_FMT_YUVA422P9LE: return AV_PIX_FMT_YUV422P9;
1099 10 case AV_PIX_FMT_YUVA444P9LE: return AV_PIX_FMT_YUV444P9;
1100 ✗ case AV_PIX_FMT_YUVA420P10BE: return AV_PIX_FMT_YUV420P10;
1101 ✗ case AV_PIX_FMT_YUVA422P10BE: return AV_PIX_FMT_YUV422P10;
1102 10 case AV_PIX_FMT_YUVA444P10BE: return AV_PIX_FMT_YUV444P10;
1103 ✗ case AV_PIX_FMT_YUVA420P10LE: return AV_PIX_FMT_YUV420P10;
1104 ✗ case AV_PIX_FMT_YUVA422P10LE: return AV_PIX_FMT_YUV422P10;
1105 10 case AV_PIX_FMT_YUVA444P10LE: return AV_PIX_FMT_YUV444P10;
1106 ✗ case AV_PIX_FMT_YUVA420P16BE: return AV_PIX_FMT_YUV420P16;
1107 ✗ case AV_PIX_FMT_YUVA422P16BE: return AV_PIX_FMT_YUV422P16;
1108 10 case AV_PIX_FMT_YUVA444P16BE: return AV_PIX_FMT_YUV444P16;
1109 ✗ case AV_PIX_FMT_YUVA420P16LE: return AV_PIX_FMT_YUV420P16;
1110 10 case AV_PIX_FMT_YUVA422P16LE: return AV_PIX_FMT_YUV422P16;
1111 14 case AV_PIX_FMT_YUVA444P16LE: return AV_PIX_FMT_YUV444P16;
1112
1113 // case AV_PIX_FMT_AYUV64LE:
1114 // case AV_PIX_FMT_AYUV64BE:
1115 // case AV_PIX_FMT_PAL8:
1116 832 default: return AV_PIX_FMT_NONE;
1117 }
1118 }
1119
1120 105416 static int scaler_flag(SwsScaler scaler, int fallback)
1121 {
1122
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 105416 switch (scaler) {
1123 ✗ case SWS_SCALE_BILINEAR: return SWS_BILINEAR; break;
1124 ✗ case SWS_SCALE_BICUBIC: return SWS_BICUBIC; break;
1125 ✗ case SWS_SCALE_POINT: return SWS_POINT; break;
1126 ✗ case SWS_SCALE_AREA: return SWS_AREA; break;
1127 ✗ case SWS_SCALE_GAUSSIAN: return SWS_GAUSS; break;
1128 ✗ case SWS_SCALE_SINC: return SWS_SINC; break;
1129 ✗ case SWS_SCALE_LANCZOS: return SWS_LANCZOS; break;
1130 ✗ case SWS_SCALE_SPLINE: return SWS_SPLINE; break;
1131 105416 default:
1132 105416 return fallback;
1133 }
1134 }
1135
1136 52708 av_cold int ff_sws_init_single_context(SwsContext *sws, SwsFilter *srcFilter,
1137 SwsFilter *dstFilter)
1138 {
1139 int i;
1140 int usesVFilter, usesHFilter;
1141 int unscaled;
1142 52708 SwsInternal *c = sws_internal(sws);
1143 52708 SwsFilter dummyFilter = { NULL, NULL, NULL, NULL };
1144 52708 int srcW = sws->src_w;
1145 52708 int srcH = sws->src_h;
1146 52708 int dstW = sws->dst_w;
1147 52708 int dstH = sws->dst_h;
1148 52708 int dst_stride = FFALIGN(dstW * sizeof(int16_t) + 66, 16);
1149 int flags, cpu_flags;
1150 enum AVPixelFormat srcFormat, dstFormat;
1151 const AVPixFmtDescriptor *desc_src;
1152 const AVPixFmtDescriptor *desc_dst;
1153 52708 int ret = 0;
1154 enum AVPixelFormat tmpFmt;
1155 static const float float_mult = 1.0f / 255.0f;
1156
1157 52708 cpu_flags = av_get_cpu_flags();
1158 52708 flags = sws->flags;
1159 52708 emms_c();
1160
1161
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 52708 unscaled = (srcW == dstW && srcH == dstH);
1162
1163
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 52708 if (!c->contrast && !c->saturation && !c->dstFormatBpp)
1164 52708 sws_setColorspaceDetails(sws, ff_yuv2rgb_coeffs[SWS_CS_DEFAULT], sws->src_range,
1165 ff_yuv2rgb_coeffs[SWS_CS_DEFAULT],
1166 sws->dst_range, 0, 1 << 16, 1 << 16);
1167
1168 52708 ret = handle_formats(sws);
1169
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 52708 if (ret < 0)
1170 ✗ return ret;
1171 52708 srcFormat = sws->src_format;
1172 52708 dstFormat = sws->dst_format;
1173 52708 desc_src = av_pix_fmt_desc_get(srcFormat);
1174 52708 desc_dst = av_pix_fmt_desc_get(dstFormat);
1175
1176 // If the source has no alpha then disable alpha blendaway
1177
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 52708 if (c->src0Alpha)
1178 590 sws->alpha_blend = SWS_ALPHA_BLEND_NONE;
1179
1180
5/6
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 53281 if (!(unscaled && sws_isSupportedEndiannessConversion(srcFormat) &&
1181 573 av_pix_fmt_swap_endianness(srcFormat) == dstFormat)) {
1182
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 52708 if (!sws_isSupportedInput(srcFormat)) {
1183 ✗ av_log(c, AV_LOG_ERROR, "%s is not supported as input pixel format\n",
1184 av_get_pix_fmt_name(srcFormat));
1185 ✗ return AVERROR(EINVAL);
1186 }
1187
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 52708 if (!sws_isSupportedOutput(dstFormat)) {
1188 ✗ av_log(c, AV_LOG_ERROR, "%s is not supported as output pixel format\n",
1189 av_get_pix_fmt_name(dstFormat));
1190 ✗ return AVERROR(EINVAL);
1191 }
1192 }
1193 av_assert2(desc_src && desc_dst);
1194
1195 52708 i = flags & (SWS_POINT |
1196 SWS_AREA |
1197 SWS_BILINEAR |
1198 SWS_FAST_BILINEAR |
1199 SWS_BICUBIC |
1200 SWS_X |
1201 SWS_GAUSS |
1202 SWS_LANCZOS |
1203 SWS_SINC |
1204 SWS_SPLINE |
1205 SWS_BICUBLIN);
1206
1207 /* provide a default scaler if not set by caller */
1208
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 52708 if (!i) {
1209
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 5811 if (dstW < srcW && dstH < srcH)
1210 ✗ i = SWS_BICUBIC;
1211
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 5811 else if (dstW > srcW && dstH > srcH)
1212 ✗ i = SWS_BICUBIC;
1213 else
1214 5811 i = SWS_BICUBIC;
1215 5811 flags |= i;
1216 5811 sws->flags = flags;
1217
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 46897 } else if (i & (i - 1)) {
1218 ✗ av_log(c, AV_LOG_ERROR,
1219 "Exactly one scaler algorithm must be chosen, got %X\n", i);
1220 ✗ return AVERROR(EINVAL);
1221 }
1222
1223
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 52708 if (i == SWS_FAST_BILINEAR) {
1224 ✗ if (srcW < 8 || dstW <= 8) {
1225 ✗ i = SWS_BILINEAR;
1226 ✗ flags ^= SWS_FAST_BILINEAR | i;
1227 ✗ sws->flags = flags;
1228 }
1229 }
1230
1231
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 52708 SwsScaler scaler_sub = sws->scaler_sub ? sws->scaler_sub : sws->scaler;
1232
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 52708 int lum_scaler = scaler_flag(sws->scaler, i == SWS_BICUBLIN ? SWS_BICUBIC : i);
1233
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 52708 int chr_scaler = scaler_flag(scaler_sub, i == SWS_BICUBLIN ? SWS_BILINEAR : i);
1234
1235 /* sanity check */
1236
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 52708 if (srcW < 1 || srcH < 1 || dstW < 1 || dstH < 1) {
1237 /* FIXME check if these are enough and try to lower them after
1238 * fixing the relevant parts of the code */
1239 ✗ av_log(c, AV_LOG_ERROR, "%dx%d -> %dx%d is invalid scaling dimension\n",
1240 srcW, srcH, dstW, dstH);
1241 ✗ return AVERROR(EINVAL);
1242 }
1243
1244
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 52708 if (!dstFilter)
1245 52708 dstFilter = &dummyFilter;
1246
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 52708 if (!srcFilter)
1247 52708 srcFilter = &dummyFilter;
1248
1249 52708 int64_t lumXInc = (((int64_t)srcW << 16) + (dstW >> 1)) / dstW;
1250 52708 int64_t lumYInc = (((int64_t)srcH << 16) + (dstH >> 1)) / dstH;
1251 52708 c->dstFormatBpp = av_get_bits_per_pixel(desc_dst);
1252 52708 c->srcFormatBpp = av_get_bits_per_pixel(desc_src);
1253 52708 c->vRounder = 4 * 0x0001000100010001ULL;
1254
1255 ✗ usesVFilter = (srcFilter->lumV && srcFilter->lumV->length > 1) ||
1256
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 52708 (srcFilter->chrV && srcFilter->chrV->length > 1) ||
1257
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 158124 (dstFilter->lumV && dstFilter->lumV->length > 1) ||
1258
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 52708 (dstFilter->chrV && dstFilter->chrV->length > 1);
1259 ✗ usesHFilter = (srcFilter->lumH && srcFilter->lumH->length > 1) ||
1260
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 52708 (srcFilter->chrH && srcFilter->chrH->length > 1) ||
1261
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 158124 (dstFilter->lumH && dstFilter->lumH->length > 1) ||
1262
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 52708 (dstFilter->chrH && dstFilter->chrH->length > 1);
1263
1264 52708 av_pix_fmt_get_chroma_sub_sample(srcFormat, &c->chrSrcHSubSample, &c->chrSrcVSubSample);
1265 52708 av_pix_fmt_get_chroma_sub_sample(dstFormat, &c->chrDstHSubSample, &c->chrDstVSubSample);
1266
1267 52708 c->dst_slice_align = 1 << c->chrDstVSubSample;
1268
1269
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 52708 if (isAnyRGB(dstFormat) && !(flags&SWS_FULL_CHR_H_INT)) {
1270
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 7719 if (dstW&1) {
1271 49 av_log(c, AV_LOG_DEBUG, "Forcing full internal H chroma due to odd output size\n");
1272 49 flags |= SWS_FULL_CHR_H_INT;
1273 49 sws->flags = flags;
1274 }
1275
1276
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 7719 if ( c->chrSrcHSubSample == 0
1277
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 2350 && c->chrSrcVSubSample == 0
1278
1/2
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 2212 && sws->dither != SWS_DITHER_BAYER //SWS_FULL_CHR_H_INT is currently not supported with SWS_DITHER_BAYER
1279
1/2
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 2212 && !(sws->flags & SWS_FAST_BILINEAR)
1280 ) {
1281 2212 av_log(c, AV_LOG_DEBUG, "Forcing full internal H chroma due to input having non subsampled chroma\n");
1282 2212 flags |= SWS_FULL_CHR_H_INT;
1283 2212 sws->flags = flags;
1284 }
1285 }
1286
1287
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 52708 if (sws->dither == SWS_DITHER_AUTO) {
1288
1/2
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 41788 if (flags & SWS_ERROR_DIFFUSION)
1289 ✗ sws->dither = SWS_DITHER_ED;
1290 }
1291
1292
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 52708 if(dstFormat == AV_PIX_FMT_BGR4_BYTE ||
1293
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 52573 dstFormat == AV_PIX_FMT_RGB4_BYTE ||
1294
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 52489 dstFormat == AV_PIX_FMT_BGR8 ||
1295 dstFormat == AV_PIX_FMT_RGB8) {
1296
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 289 if (sws->dither == SWS_DITHER_AUTO)
1297
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 289 sws->dither = (flags & SWS_FULL_CHR_H_INT) ? SWS_DITHER_ED : SWS_DITHER_BAYER;
1298
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 289 if (!(flags & SWS_FULL_CHR_H_INT)) {
1299
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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) {
1300 ✗ av_log(c, AV_LOG_DEBUG,
1301 "Desired dithering only supported in full chroma interpolation for destination format '%s'\n",
1302 av_get_pix_fmt_name(dstFormat));
1303 ✗ flags |= SWS_FULL_CHR_H_INT;
1304 ✗ sws->flags = flags;
1305 }
1306 }
1307
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 289 if (flags & SWS_FULL_CHR_H_INT) {
1308
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 55 if (sws->dither == SWS_DITHER_BAYER) {
1309 ✗ av_log(c, AV_LOG_DEBUG,
1310 "Ordered dither is not supported in full chroma interpolation for destination format '%s'\n",
1311 av_get_pix_fmt_name(dstFormat));
1312 ✗ sws->dither = SWS_DITHER_ED;
1313 }
1314 }
1315 }
1316
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 52708 if (isPlanarRGB(dstFormat)) {
1317
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 5338 if (!(flags & SWS_FULL_CHR_H_INT)) {
1318 704 av_log(c, AV_LOG_DEBUG,
1319 "%s output is not supported with half chroma resolution, switching to full\n",
1320 av_get_pix_fmt_name(dstFormat));
1321 704 flags |= SWS_FULL_CHR_H_INT;
1322 704 sws->flags = flags;
1323 }
1324 }
1325
1326 /* reuse chroma for 2 pixels RGB/BGR unless user wants full
1327 * chroma interpolation */
1328
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 62707 if (flags & SWS_FULL_CHR_H_INT &&
1329
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 19998 isAnyRGB(dstFormat) &&
1330
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 14660 !isPlanarRGB(dstFormat) &&
1331
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 4648 dstFormat != AV_PIX_FMT_RGBA64LE &&
1332
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 4636 dstFormat != AV_PIX_FMT_RGBA64BE &&
1333
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 4623 dstFormat != AV_PIX_FMT_BGRA64LE &&
1334
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 4611 dstFormat != AV_PIX_FMT_BGRA64BE &&
1335
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 3716 dstFormat != AV_PIX_FMT_RGB48LE &&
1336
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 3572 dstFormat != AV_PIX_FMT_RGB48BE &&
1337
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 3559 dstFormat != AV_PIX_FMT_BGR48LE &&
1338
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 3547 dstFormat != AV_PIX_FMT_BGR48BE &&
1339
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 3452 dstFormat != AV_PIX_FMT_RGBA &&
1340
2/2
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 3416 dstFormat != AV_PIX_FMT_ARGB &&
1341
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 2854 dstFormat != AV_PIX_FMT_BGRA &&
1342
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 2828 dstFormat != AV_PIX_FMT_ABGR &&
1343
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 1058 dstFormat != AV_PIX_FMT_RGB24 &&
1344
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 907 dstFormat != AV_PIX_FMT_BGR24 &&
1345
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 894 dstFormat != AV_PIX_FMT_BGR4_BYTE &&
1346
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 881 dstFormat != AV_PIX_FMT_RGB4_BYTE &&
1347
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 866 dstFormat != AV_PIX_FMT_BGR8 &&
1348
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 852 dstFormat != AV_PIX_FMT_RGB8 &&
1349
2/2
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 730 dstFormat != AV_PIX_FMT_X2RGB10LE &&
1350 dstFormat != AV_PIX_FMT_X2BGR10LE
1351 ) {
1352 608 av_log(c, AV_LOG_WARNING,
1353 "full chroma interpolation for destination format '%s' not yet implemented\n",
1354 av_get_pix_fmt_name(dstFormat));
1355 608 flags &= ~SWS_FULL_CHR_H_INT;
1356 608 sws->flags = flags;
1357 }
1358
4/4
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 52708 if (isAnyRGB(dstFormat) && !(flags & SWS_FULL_CHR_H_INT))
1359 5407 c->chrDstHSubSample = 1;
1360
1361 // drop some chroma lines if the user wants it
1362 52708 c->vChrDrop = (flags & SWS_SRC_V_CHR_DROP_MASK) >>
1363 SWS_SRC_V_CHR_DROP_SHIFT;
1364 52708 c->chrSrcVSubSample += c->vChrDrop;
1365
1366 /* drop every other pixel for chroma calculation unless user
1367 * wants full chroma */
1368
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 52708 if (isAnyRGB(srcFormat) && !(srcW & 1) && !(flags & SWS_FULL_CHR_H_INP) &&
1369
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 17848 srcFormat != AV_PIX_FMT_RGB8 && srcFormat != AV_PIX_FMT_BGR8 &&
1370
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 17707 srcFormat != AV_PIX_FMT_RGB4 && srcFormat != AV_PIX_FMT_BGR4 &&
1371
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 17566 srcFormat != AV_PIX_FMT_RGB4_BYTE && srcFormat != AV_PIX_FMT_BGR4_BYTE &&
1372
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 17284 srcFormat != AV_PIX_FMT_GBRP9BE && srcFormat != AV_PIX_FMT_GBRP9LE &&
1373
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 16891 srcFormat != AV_PIX_FMT_GBRP10BE && srcFormat != AV_PIX_FMT_GBRP10LE &&
1374
4/4
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 15553 srcFormat != AV_PIX_FMT_GBRP10MSBBE && srcFormat != AV_PIX_FMT_GBRP10MSBLE &&
1375
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 15270 srcFormat != AV_PIX_FMT_GBRAP10BE && srcFormat != AV_PIX_FMT_GBRAP10LE &&
1376
4/4
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 14877 srcFormat != AV_PIX_FMT_GBRP12BE && srcFormat != AV_PIX_FMT_GBRP12LE &&
1377
4/4
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 13554 srcFormat != AV_PIX_FMT_GBRP12MSBBE && srcFormat != AV_PIX_FMT_GBRP12MSBLE &&
1378
4/4
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 13271 srcFormat != AV_PIX_FMT_GBRAP12BE && srcFormat != AV_PIX_FMT_GBRAP12LE &&
1379
4/4
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 12988 srcFormat != AV_PIX_FMT_GBRAP14BE && srcFormat != AV_PIX_FMT_GBRAP14LE &&
1380
4/4
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 12706 srcFormat != AV_PIX_FMT_GBRP14BE && srcFormat != AV_PIX_FMT_GBRP14LE &&
1381
4/4
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 12263 srcFormat != AV_PIX_FMT_GBRP16BE && srcFormat != AV_PIX_FMT_GBRP16LE &&
1382
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 11654 srcFormat != AV_PIX_FMT_GBRAP16BE && srcFormat != AV_PIX_FMT_GBRAP16LE &&
1383
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 11369 srcFormat != AV_PIX_FMT_GBRPF32BE && srcFormat != AV_PIX_FMT_GBRPF32LE &&
1384
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 11052 srcFormat != AV_PIX_FMT_GBRAPF32BE && srcFormat != AV_PIX_FMT_GBRAPF32LE &&
1385
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 10911 srcFormat != AV_PIX_FMT_GBRPF16BE && srcFormat != AV_PIX_FMT_GBRPF16LE &&
1386
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 10692 srcFormat != AV_PIX_FMT_GBRAPF16BE && srcFormat != AV_PIX_FMT_GBRAPF16LE &&
1387
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 10647 ((dstW >> c->chrDstHSubSample) <= (srcW >> 1) ||
1388
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 9123 (flags & SWS_FAST_BILINEAR)))
1389 1524 c->chrSrcHSubSample = 1;
1390
1391 // Note the AV_CEIL_RSHIFT is so that we always round toward +inf.
1392 52708 c->chrSrcW = AV_CEIL_RSHIFT(srcW, c->chrSrcHSubSample);
1393 52708 c->chrSrcH = AV_CEIL_RSHIFT(srcH, c->chrSrcVSubSample);
1394 52708 c->chrDstW = AV_CEIL_RSHIFT(dstW, c->chrDstHSubSample);
1395 52708 c->chrDstH = AV_CEIL_RSHIFT(dstH, c->chrDstVSubSample);
1396
1397
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 52708 if (!FF_ALLOCZ_TYPED_ARRAY(c->formatConvBuffer, FFALIGN(srcW * 2 + 78, 16) * 2))
1398 ✗ goto nomem;
1399
1400 52708 c->srcBpc = desc_src->comp[0].depth;
1401
2/2
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 52708 if (c->srcBpc < 8)
1402 3155 c->srcBpc = 8;
1403 52708 c->dstBpc = desc_dst->comp[0].depth;
1404
2/2
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 52708 if (c->dstBpc < 8)
1405 2366 c->dstBpc = 8;
1406
4/4
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 52708 if (isAnyRGB(srcFormat) || srcFormat == AV_PIX_FMT_PAL8)
1407 19170 c->srcBpc = 16;
1408
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 52708 if (c->dstBpc == 16)
1409 6225 dst_stride <<= 1;
1410
1411
6/6
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 52708 if (INLINE_MMXEXT(cpu_flags) && c->srcBpc == 8 && c->dstBpc <= 14) {
1412
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 4691 c->canMMXEXTBeUsed = dstW >= srcW && (dstW & 31) == 0 &&
1413
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 12771 c->chrDstW >= c->chrSrcW &&
1414
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 3389 (srcW & 15) == 0;
1415
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 4691 if (!c->canMMXEXTBeUsed && dstW >= srcW && c->chrDstW >= c->chrSrcW && (srcW & 15) == 0
1416
1417
1/2
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 372 && (flags & SWS_FAST_BILINEAR)) {
1418 ✗ if (flags & SWS_PRINT_INFO)
1419 ✗ av_log(c, AV_LOG_INFO,
1420 "output width is not a multiple of 32 -> no MMXEXT scaler\n");
1421 }
1422
4/8
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 4691 if (usesHFilter || isNBPS(sws->src_format) || is16BPS(sws->src_format) || isAnyRGB(sws->src_format))
1423 ✗ c->canMMXEXTBeUsed = 0;
1424 } else
1425 48017 c->canMMXEXTBeUsed = 0;
1426
1427 52708 int64_t chrXInc = (((int64_t)c->chrSrcW << 16) + (c->chrDstW >> 1)) / c->chrDstW;
1428 52708 int64_t chrYInc = (((int64_t)c->chrSrcH << 16) + (c->chrDstH >> 1)) / c->chrDstH;
1429
1430 /* Match pixel 0 of the src to pixel 0 of dst and match pixel n-2 of src
1431 * to pixel n-2 of dst, but only for the FAST_BILINEAR mode otherwise do
1432 * correct scaling.
1433 * n-2 is the last chrominance sample available.
1434 * This is not perfect, but no one should notice the difference, the more
1435 * correct variant would be like the vertical one, but that would require
1436 * some special code for the first and last pixel */
1437
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 52708 if (flags & SWS_FAST_BILINEAR) {
1438 ✗ if (c->canMMXEXTBeUsed) {
1439 ✗ lumXInc += 20;
1440 ✗ chrXInc += 20;
1441 }
1442 // we don't use the x86 asm scaler if MMX is available
1443 ✗ else if (INLINE_MMX(cpu_flags) && c->dstBpc <= 14) {
1444 ✗ lumXInc = ((int64_t)(srcW - 2) << 16) / (dstW - 2) - 20;
1445 ✗ chrXInc = ((int64_t)(c->chrSrcW - 2) << 16) / (c->chrDstW - 2) - 20;
1446 }
1447 }
1448
3/6
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 52708 if (chrXInc < 10 || chrXInc > INT_MAX ||
1449
2/4
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 52708 chrYInc < 10 || chrYInc > INT_MAX ||
1450
2/4
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 52708 lumXInc < 10 || lumXInc > INT_MAX ||
1451
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 52708 lumYInc < 10 || lumYInc > INT_MAX)
1452 ✗ return AVERROR_PATCHWELCOME;
1453
1454 52708 c->lumXInc = lumXInc;
1455 52708 c->lumYInc = lumYInc;
1456 52708 c->chrXInc = chrXInc;
1457 52708 c->chrYInc = chrYInc;
1458
1459
1460 // hardcoded for now
1461 52708 c->gamma_value = 2.2;
1462 52708 tmpFmt = AV_PIX_FMT_RGBA64LE;
1463
1464
3/8
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 52708 if (!unscaled && sws->gamma_flag && (srcFormat != tmpFmt || dstFormat != tmpFmt)) {
1465 SwsInternal *c2;
1466 ✗ c->cascaded_context[0] = NULL;
1467
1468 ✗ ret = av_image_alloc(c->cascaded_tmp[0], c->cascaded_tmpStride[0],
1469 srcW, srcH, tmpFmt, 64);
1470 ✗ if (ret < 0)
1471 ✗ return ret;
1472
1473 ✗ c->cascaded_context[0] = sws_getContext(srcW, srcH, srcFormat,
1474 srcW, srcH, tmpFmt,
1475 flags, NULL, NULL,
1476 ✗ sws->scaler_params);
1477 ✗ if (!c->cascaded_context[0]) {
1478 ✗ return AVERROR(ENOMEM);
1479 }
1480
1481 ✗ c->cascaded_context[1] = sws_getContext(srcW, srcH, tmpFmt,
1482 dstW, dstH, tmpFmt,
1483 flags, srcFilter, dstFilter,
1484 ✗ sws->scaler_params);
1485
1486 ✗ if (!c->cascaded_context[1])
1487 ✗ return AVERROR(ENOMEM);
1488
1489 ✗ c2 = sws_internal(c->cascaded_context[1]);
1490 ✗ c2->is_internal_gamma = 1;
1491 ✗ c2->gamma = alloc_gamma_tbl( c->gamma_value);
1492 ✗ c2->inv_gamma = alloc_gamma_tbl(1.f/c->gamma_value);
1493 ✗ if (!c2->gamma || !c2->inv_gamma)
1494 ✗ return AVERROR(ENOMEM);
1495
1496 // is_internal_flag is set after creating the context
1497 // to properly create the gamma convert FilterDescriptor
1498 // we have to re-initialize it
1499 ✗ ff_free_filters(c2);
1500 ✗ if ((ret = ff_init_filters(c2)) < 0) {
1501 ✗ sws_freeContext(c->cascaded_context[1]);
1502 ✗ c->cascaded_context[1] = NULL;
1503 ✗ return ret;
1504 }
1505
1506 ✗ c->cascaded_context[2] = NULL;
1507 ✗ if (dstFormat != tmpFmt) {
1508 ✗ ret = av_image_alloc(c->cascaded_tmp[1], c->cascaded_tmpStride[1],
1509 dstW, dstH, tmpFmt, 64);
1510 ✗ if (ret < 0)
1511 ✗ return ret;
1512
1513 ✗ c->cascaded_context[2] = sws_getContext(dstW, dstH, tmpFmt,
1514 dstW, dstH, dstFormat,
1515 flags, NULL, NULL,
1516 ✗ sws->scaler_params);
1517 ✗ if (!c->cascaded_context[2])
1518 ✗ return AVERROR(ENOMEM);
1519 }
1520 ✗ return 0;
1521 }
1522
1523
1/2
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 52708 if (isBayer(srcFormat)) {
1524 ✗ if (!unscaled ||
1525 ✗ (dstFormat != AV_PIX_FMT_RGB24 && dstFormat != AV_PIX_FMT_YUV420P &&
1526 dstFormat != AV_PIX_FMT_RGB48)) {
1527 ✗ enum AVPixelFormat tmpFormat = isBayer16BPS(srcFormat) ? AV_PIX_FMT_RGB48 : AV_PIX_FMT_RGB24;
1528
1529 ✗ ret = av_image_alloc(c->cascaded_tmp[0], c->cascaded_tmpStride[0],
1530 srcW, srcH, tmpFormat, 64);
1531 ✗ if (ret < 0)
1532 ✗ return ret;
1533
1534 ✗ c->cascaded_context[0] = sws_getContext(srcW, srcH, srcFormat,
1535 srcW, srcH, tmpFormat,
1536 flags, srcFilter, NULL,
1537 ✗ sws->scaler_params);
1538 ✗ if (!c->cascaded_context[0])
1539 ✗ return AVERROR(ENOMEM);
1540
1541 ✗ c->cascaded_context[1] = sws_getContext(srcW, srcH, tmpFormat,
1542 dstW, dstH, dstFormat,
1543 flags, NULL, dstFilter,
1544 ✗ sws->scaler_params);
1545 ✗ if (!c->cascaded_context[1])
1546 ✗ return AVERROR(ENOMEM);
1547 ✗ return 0;
1548 }
1549 }
1550
1551
6/6
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 52708 if (unscaled && c->srcBpc == 8 && dstFormat == AV_PIX_FMT_GRAYF32){
1552
2/2
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 5140 for (i = 0; i < 256; ++i){
1553 5120 c->uint2float_lut[i] = (float)i * float_mult;
1554 }
1555 }
1556
1557 // float will be converted to uint16_t
1558
6/6
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 52708 if ((srcFormat == AV_PIX_FMT_GRAYF32BE || srcFormat == AV_PIX_FMT_GRAYF32LE) &&
1559
5/8
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 281 (!unscaled || unscaled && dstFormat != srcFormat && (srcFormat != AV_PIX_FMT_GRAYF32 ||
1560 dstFormat != AV_PIX_FMT_GRAY8))){
1561 283 c->srcBpc = 16;
1562 }
1563
1564
4/4
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 52708 if (CONFIG_SWSCALE_ALPHA && isALPHA(srcFormat) && !isALPHA(dstFormat)) {
1565 1983 enum AVPixelFormat tmpFormat = alphaless_fmt(srcFormat);
1566
1567
3/4
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 1983 if (tmpFormat != AV_PIX_FMT_NONE && sws->alpha_blend != SWS_ALPHA_BLEND_NONE) {
1568 ✗ if (!unscaled ||
1569 ✗ dstFormat != tmpFormat ||
1570 ✗ usesHFilter || usesVFilter ||
1571 ✗ sws->src_range != sws->dst_range
1572 ) {
1573 ✗ c->cascaded_mainindex = 1;
1574 ✗ ret = av_image_alloc(c->cascaded_tmp[0], c->cascaded_tmpStride[0],
1575 srcW, srcH, tmpFormat, 64);
1576 ✗ if (ret < 0)
1577 ✗ return ret;
1578
1579 ✗ c->cascaded_context[0] = alloc_set_opts(srcW, srcH, srcFormat,
1580 srcW, srcH, tmpFormat,
1581 ✗ flags, sws->scaler_params);
1582 ✗ if (!c->cascaded_context[0])
1583 ✗ return AVERROR(EINVAL);
1584 ✗ c->cascaded_context[0]->alpha_blend = sws->alpha_blend;
1585 ✗ ret = sws_init_context(c->cascaded_context[0], NULL , NULL);
1586 ✗ if (ret < 0)
1587 ✗ return ret;
1588
1589 ✗ c->cascaded_context[1] = alloc_set_opts(srcW, srcH, tmpFormat,
1590 dstW, dstH, dstFormat,
1591 ✗ flags, sws->scaler_params);
1592 ✗ if (!c->cascaded_context[1])
1593 ✗ return AVERROR(EINVAL);
1594
1595 ✗ c->cascaded_context[1]->src_range = sws->src_range;
1596 ✗ c->cascaded_context[1]->dst_range = sws->dst_range;
1597 ✗ ret = sws_init_context(c->cascaded_context[1], srcFilter , dstFilter);
1598 ✗ if (ret < 0)
1599 ✗ return ret;
1600
1601 ✗ return 0;
1602 }
1603 }
1604 }
1605
1606 /* alpha blend special case, note this has been split via cascaded contexts if its scaled */
1607
4/6
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 52708 if (unscaled && !usesHFilter && !usesVFilter &&
1608
1/4
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 51719 sws->alpha_blend != SWS_ALPHA_BLEND_NONE &&
1609 ✗ isALPHA(srcFormat) &&
1610 ✗ (sws->src_range == sws->dst_range || isAnyRGB(dstFormat)) &&
1611 ✗ alphaless_fmt(srcFormat) == dstFormat
1612 ) {
1613 ✗ c->convert_unscaled = ff_sws_alphablendaway;
1614
1615 ✗ if (flags & SWS_PRINT_INFO)
1616 ✗ av_log(c, AV_LOG_INFO,
1617 "using alpha blendaway %s -> %s special converter\n",
1618 av_get_pix_fmt_name(srcFormat), av_get_pix_fmt_name(dstFormat));
1619 ✗ return 0;
1620 }
1621
1622 /* unscaled special cases */
1623
4/6
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 52708 if (unscaled && !usesHFilter && !usesVFilter &&
1624
5/6
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✓ Branch 4 taken 688 times.
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 56417 (sws->src_range == sws->dst_range || isAnyRGB(dstFormat) ||
1625
2/4
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 9396 isFloat(srcFormat) || isFloat(dstFormat) || isBayer(srcFormat))){
1626
1627 47021 ff_get_unscaled_swscale(c);
1628
1629
2/2
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✓ Branch 1 taken 37682 times.
 47021 if (c->convert_unscaled) {
1630
1/2
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✓ Branch 1 taken 9339 times.
 9339 if (flags & SWS_PRINT_INFO)
1631 ✗ av_log(c, AV_LOG_INFO,
1632 "using unscaled %s -> %s special converter\n",
1633 av_get_pix_fmt_name(srcFormat), av_get_pix_fmt_name(dstFormat));
1634 9339 return 0;
1635 }
1636 }
1637
1638 #if HAVE_MMAP && HAVE_MPROTECT && defined(MAP_ANONYMOUS)
1639 #define USE_MMAP 1
1640 #else
1641 #define USE_MMAP 0
1642 #endif
1643
1644 /* precalculate horizontal scaler filter coefficients */
1645 {
1646 #if HAVE_MMXEXT_INLINE
1647 // can't downscale !!!
1648
3/4
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✗ Branch 2 not taken.
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 43369 if (c->canMMXEXTBeUsed && (flags & SWS_FAST_BILINEAR)) {
1649 ✗ c->lumMmxextFilterCodeSize = ff_init_hscaler_mmxext(dstW, c->lumXInc, NULL,
1650 NULL, NULL, 8);
1651 ✗ c->chrMmxextFilterCodeSize = ff_init_hscaler_mmxext(c->chrDstW, c->chrXInc,
1652 NULL, NULL, NULL, 4);
1653
1654 #if USE_MMAP
1655 ✗ c->lumMmxextFilterCode = mmap(NULL, c->lumMmxextFilterCodeSize,
1656 PROT_READ | PROT_WRITE,
1657 MAP_PRIVATE | MAP_ANONYMOUS,
1658 -1, 0);
1659 ✗ c->chrMmxextFilterCode = mmap(NULL, c->chrMmxextFilterCodeSize,
1660 PROT_READ | PROT_WRITE,
1661 MAP_PRIVATE | MAP_ANONYMOUS,
1662 -1, 0);
1663 #elif HAVE_VIRTUALALLOC
1664 c->lumMmxextFilterCode = VirtualAlloc(NULL,
1665 c->lumMmxextFilterCodeSize,
1666 MEM_COMMIT,
1667 PAGE_EXECUTE_READWRITE);
1668 c->chrMmxextFilterCode = VirtualAlloc(NULL,
1669 c->chrMmxextFilterCodeSize,
1670 MEM_COMMIT,
1671 PAGE_EXECUTE_READWRITE);
1672 #else
1673 c->lumMmxextFilterCode = av_malloc(c->lumMmxextFilterCodeSize);
1674 c->chrMmxextFilterCode = av_malloc(c->chrMmxextFilterCodeSize);
1675 #endif
1676
1677 #ifdef MAP_ANONYMOUS
1678 ✗ if (c->lumMmxextFilterCode == MAP_FAILED || c->chrMmxextFilterCode == MAP_FAILED)
1679 #else
1680 if (!c->lumMmxextFilterCode || !c->chrMmxextFilterCode)
1681 #endif
1682 {
1683 ✗ av_log(c, AV_LOG_ERROR, "Failed to allocate MMX2FilterCode\n");
1684 ✗ return AVERROR(ENOMEM);
1685 }
1686
1687 ✗ if (!FF_ALLOCZ_TYPED_ARRAY(c->hLumFilter, dstW / 8 + 8) ||
1688 ✗ !FF_ALLOCZ_TYPED_ARRAY(c->hChrFilter, c->chrDstW / 4 + 8) ||
1689 ✗ !FF_ALLOCZ_TYPED_ARRAY(c->hLumFilterPos, dstW / 2 / 8 + 8) ||
1690 ✗ !FF_ALLOCZ_TYPED_ARRAY(c->hChrFilterPos, c->chrDstW / 2 / 4 + 8))
1691 ✗ goto nomem;
1692
1693 ✗ ff_init_hscaler_mmxext( dstW, c->lumXInc, c->lumMmxextFilterCode,
1694 c->hLumFilter, (uint32_t*)c->hLumFilterPos, 8);
1695 ✗ ff_init_hscaler_mmxext(c->chrDstW, c->chrXInc, c->chrMmxextFilterCode,
1696 c->hChrFilter, (uint32_t*)c->hChrFilterPos, 4);
1697
1698 #if USE_MMAP
1699 ✗ if ( mprotect(c->lumMmxextFilterCode, c->lumMmxextFilterCodeSize, PROT_EXEC | PROT_READ) == -1
1700 ✗ || mprotect(c->chrMmxextFilterCode, c->chrMmxextFilterCodeSize, PROT_EXEC | PROT_READ) == -1) {
1701 ✗ av_log(c, AV_LOG_ERROR, "mprotect failed, cannot use fast bilinear scaler\n");
1702 ✗ ret = AVERROR(EINVAL);
1703 ✗ goto fail;
1704 }
1705 #endif
1706 } else
1707 #endif /* HAVE_MMXEXT_INLINE */
1708 {
1709
2/2
✓ Branch 0 taken 17548 times.
✓ Branch 1 taken 25821 times.
 43369 const int filterAlign = X86_MMX(cpu_flags) ? 4 :
1710 PPC_ALTIVEC(cpu_flags) ? 8 :
1711 have_neon(cpu_flags) ? 4 :
1712 have_lsx(cpu_flags) ? 8 :
1713 have_lasx(cpu_flags) ? 8 : 1;
1714
1715
1/2
✗ Branch 2 not taken.
✓ Branch 3 taken 43369 times.
 86738 if ((ret = initFilter(&c->hLumFilter, &c->hLumFilterPos,
1716 &c->hLumFilterSize, c->lumXInc,
1717 srcW, dstW, filterAlign, 1 << 14,
1718 lum_scaler, flags,
1719 cpu_flags, srcFilter->lumH, dstFilter->lumH,
1720 43369 sws->scaler_params,
1721 get_local_pos(c, 0, 0, 0),
1722 get_local_pos(c, 0, 0, 0))) < 0)
1723 ✗ goto fail;
1724
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 43369 times.
 43369 if (ff_shuffle_filter_coefficients(c, c->hLumFilterPos, c->hLumFilterSize, c->hLumFilter, dstW) < 0)
1725 ✗ goto nomem;
1726
1/2
✗ Branch 2 not taken.
✓ Branch 3 taken 43369 times.
 86738 if ((ret = initFilter(&c->hChrFilter, &c->hChrFilterPos,
1727 &c->hChrFilterSize, c->chrXInc,
1728 c->chrSrcW, c->chrDstW, filterAlign, 1 << 14,
1729 chr_scaler, flags,
1730 cpu_flags, srcFilter->chrH, dstFilter->chrH,
1731 43369 sws->scaler_params,
1732 get_local_pos(c, c->chrSrcHSubSample, sws->src_h_chr_pos, 0),
1733 get_local_pos(c, c->chrDstHSubSample, sws->dst_h_chr_pos, 0))) < 0)
1734 ✗ goto fail;
1735
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 43369 times.
 43369 if (ff_shuffle_filter_coefficients(c, c->hChrFilterPos, c->hChrFilterSize, c->hChrFilter, c->chrDstW) < 0)
1736 ✗ goto nomem;
1737 }
1738 } // initialize horizontal stuff
1739
1740 /* precalculate vertical scaler filter coefficients */
1741 {
1742
2/2
✓ Branch 0 taken 17548 times.
✓ Branch 1 taken 25821 times.
 43369 const int filterAlign = X86_MMX(cpu_flags) ? 2 :
1743 PPC_ALTIVEC(cpu_flags) ? 8 :
1744 have_neon(cpu_flags) ? 2 : 1;
1745
1746 43369 ret = initFilter(&c->vLumFilter, &c->vLumFilterPos, &c->vLumFilterSize,
1747 c->lumYInc, srcH, dstH, filterAlign, (1 << 12),
1748 lum_scaler, flags,
1749 cpu_flags, srcFilter->lumV, dstFilter->lumV,
1750 43369 sws->scaler_params,
1751 get_local_pos(c, 0, 0, 1),
1752 get_local_pos(c, 0, 0, 1));
1753 43369 int usecascade = (ret == RETCODE_USE_CASCADE);
1754
1/4
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 43369 if (ret < 0 && !usecascade)
1755 ✗ goto fail;
1756
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 86738 if ((ret = initFilter(&c->vChrFilter, &c->vChrFilterPos, &c->vChrFilterSize,
1757 c->chrYInc, c->chrSrcH, c->chrDstH,
1758 filterAlign, (1 << 12),
1759 chr_scaler, flags,
1760 cpu_flags, srcFilter->chrV, dstFilter->chrV,
1761 43369 sws->scaler_params,
1762 get_local_pos(c, c->chrSrcVSubSample, sws->src_v_chr_pos, 1),
1763 get_local_pos(c, c->chrDstVSubSample, sws->dst_v_chr_pos, 1))) < 0)
1764
1765 ✗ goto fail;
1766
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 43369 if (usecascade) {
1767 ✗ ret = RETCODE_USE_CASCADE;
1768 ✗ goto fail;
1769 }
1770
1771 #if HAVE_ALTIVEC
1772 ret = ff_sws_init_altivec_bufs(c);
1773 if (ret < 0)
1774 goto fail;
1775 #endif
1776 }
1777
1778
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 216845 for (i = 0; i < 4; i++)
1779
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 173476 if (!FF_ALLOCZ_TYPED_ARRAY(c->dither_error[i], sws->dst_w + 3))
1780 ✗ goto nomem;
1781
1782
4/4
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✓ Branch 4 taken 4420 times.
✓ Branch 5 taken 698 times.
 43369 c->needAlpha = (CONFIG_SWSCALE_ALPHA && isALPHA(sws->src_format) && isALPHA(sws->dst_format)) ? 1 : 0;
1783
1784 // 64 / c->scalingBpp is the same as 16 / sizeof(scaling_intermediate)
1785 43369 c->uv_off = (dst_stride>>1) + 64 / (c->dstBpc &~ 7);
1786 43369 c->uv_offx2 = dst_stride + 16;
1787
1788
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 43369 av_assert0(c->chrDstH <= dstH);
1789
1790
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 43369 if (flags & SWS_PRINT_INFO) {
1791 ✗ const char *scaler = NULL, *cpucaps;
1792
1793 ✗ for (i = 0; i < FF_ARRAY_ELEMS(scale_algorithms); i++) {
1794 ✗ if (flags & scale_algorithms[i].flag) {
1795 ✗ scaler = scale_algorithms[i].description;
1796 ✗ break;
1797 }
1798 }
1799 ✗ if (!scaler)
1800 ✗ scaler = "ehh flags invalid?!";
1801 ✗ av_log(c, AV_LOG_INFO, "%s scaler, from %s to %s%s ",
1802 scaler,
1803 av_get_pix_fmt_name(srcFormat),
1804 ✗ dstFormat == AV_PIX_FMT_BGR555 || dstFormat == AV_PIX_FMT_BGR565 ||
1805 ✗ dstFormat == AV_PIX_FMT_RGB444BE || dstFormat == AV_PIX_FMT_RGB444LE ||
1806 ✗ dstFormat == AV_PIX_FMT_BGR444BE || dstFormat == AV_PIX_FMT_BGR444LE ?
1807 "dithered " : "",
1808 av_get_pix_fmt_name(dstFormat));
1809
1810 ✗ if (INLINE_MMXEXT(cpu_flags))
1811 ✗ cpucaps = "MMXEXT";
1812 ✗ else if (INLINE_MMX(cpu_flags))
1813 ✗ cpucaps = "MMX";
1814 else if (PPC_ALTIVEC(cpu_flags))
1815 cpucaps = "AltiVec";
1816 else
1817 ✗ cpucaps = "C";
1818
1819 ✗ av_log(c, AV_LOG_INFO, "using %s\n", cpucaps);
1820
1821 ✗ av_log(c, AV_LOG_VERBOSE, "%dx%d -> %dx%d\n", srcW, srcH, dstW, dstH);
1822 ✗ av_log(c, AV_LOG_DEBUG,
1823 "lum srcW=%d srcH=%d dstW=%d dstH=%d xInc=%d yInc=%d\n",
1824 sws->src_w, sws->src_h, sws->dst_w, sws->dst_h, c->lumXInc, c->lumYInc);
1825 ✗ av_log(c, AV_LOG_DEBUG,
1826 "chr srcW=%d srcH=%d dstW=%d dstH=%d xInc=%d yInc=%d\n",
1827 c->chrSrcW, c->chrSrcH, c->chrDstW, c->chrDstH,
1828 c->chrXInc, c->chrYInc);
1829 }
1830
1831 43369 ff_sws_init_scale(c);
1832
1833 43369 return ff_init_filters(c);
1834 ✗ nomem:
1835 ✗ ret = AVERROR(ENOMEM);
1836 ✗ fail: // FIXME replace things by appropriate error codes
1837 ✗ if (ret == RETCODE_USE_CASCADE) {
1838 ✗ int tmpW = sqrt(srcW * (int64_t)dstW);
1839 ✗ int tmpH = sqrt(srcH * (int64_t)dstH);
1840 ✗ enum AVPixelFormat tmpFormat = AV_PIX_FMT_YUV420P;
1841
1842 ✗ if (isALPHA(srcFormat))
1843 ✗ tmpFormat = AV_PIX_FMT_YUVA420P;
1844
1845 ✗ if (srcW*(int64_t)srcH <= 4LL*dstW*dstH)
1846 ✗ return AVERROR(EINVAL);
1847
1848 ✗ ret = av_image_alloc(c->cascaded_tmp[0], c->cascaded_tmpStride[0],
1849 tmpW, tmpH, tmpFormat, 64);
1850 ✗ if (ret < 0)
1851 ✗ return ret;
1852
1853 ✗ c->cascaded_context[0] = sws_getContext(srcW, srcH, srcFormat,
1854 tmpW, tmpH, tmpFormat,
1855 flags, srcFilter, NULL,
1856 ✗ sws->scaler_params);
1857 ✗ if (!c->cascaded_context[0])
1858 ✗ return AVERROR(ENOMEM);
1859
1860 ✗ c->cascaded_context[1] = sws_getContext(tmpW, tmpH, tmpFormat,
1861 dstW, dstH, dstFormat,
1862 flags, NULL, dstFilter,
1863 ✗ sws->scaler_params);
1864 ✗ if (!c->cascaded_context[1])
1865 ✗ return AVERROR(ENOMEM);
1866 ✗ return 0;
1867 }
1868 ✗ return ret;
1869 }
1870
1871 ✗ static int context_init_threaded(SwsContext *sws,
1872 SwsFilter *src_filter, SwsFilter *dst_filter)
1873 {
1874 ✗ SwsInternal *c = sws_internal(sws);
1875 int ret;
1876
1877 ✗ ret = avpriv_slicethread_create(&c->slicethread, (void*) sws,
1878 ff_sws_slice_worker, NULL, sws->threads);
1879 ✗ if (ret == AVERROR(ENOSYS)) {
1880 ✗ sws->threads = 1;
1881 ✗ return 0;
1882 ✗ } else if (ret < 0)
1883 ✗ return ret;
1884
1885 ✗ sws->threads = ret;
1886
1887 ✗ c->slice_ctx = av_calloc(sws->threads, sizeof(*c->slice_ctx));
1888 ✗ c->slice_err = av_calloc(sws->threads, sizeof(*c->slice_err));
1889 ✗ if (!c->slice_ctx || !c->slice_err)
1890 ✗ return AVERROR(ENOMEM);
1891
1892 ✗ for (int i = 0; i < sws->threads; i++) {
1893 SwsContext *slice;
1894 ✗ slice = c->slice_ctx[i] = sws_alloc_context();
1895 ✗ if (!slice)
1896 ✗ return AVERROR(ENOMEM);
1897 ✗ sws_internal(slice)->parent = sws;
1898 ✗ c->nb_slice_ctx++;
1899
1900 ✗ ret = av_opt_copy(slice, sws);
1901 ✗ if (ret < 0)
1902 ✗ return ret;
1903 ✗ slice->threads = 1;
1904
1905 ✗ ret = ff_sws_init_single_context(slice, src_filter, dst_filter);
1906 ✗ if (ret < 0)
1907 ✗ return ret;
1908
1909 ✗ if (slice->dither == SWS_DITHER_ED) {
1910 ✗ av_log(c, AV_LOG_VERBOSE,
1911 "Error-diffusion dither is in use, scaling will be single-threaded.");
1912 ✗ break;
1913 }
1914 }
1915
1916 ✗ return 0;
1917 }
1918
1919 29590 av_cold int sws_init_context(SwsContext *sws, SwsFilter *srcFilter,
1920 SwsFilter *dstFilter)
1921 {
1922 29590 SwsInternal *c = sws_internal(sws);
1923 static AVOnce rgb2rgb_once = AV_ONCE_INIT;
1924 enum AVPixelFormat src_format, dst_format;
1925 int ret;
1926
1927 29590 c->is_legacy_init = 1;
1928 29590 c->frame_src = av_frame_alloc();
1929 29590 c->frame_dst = av_frame_alloc();
1930
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 29590 if (!c->frame_src || !c->frame_dst)
1931 ✗ return AVERROR(ENOMEM);
1932
1933
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 29590 if (ff_thread_once(&rgb2rgb_once, ff_sws_rgb2rgb_init) != 0)
1934 ✗ return AVERROR_UNKNOWN;
1935
1936 29590 src_format = sws->src_format;
1937 29590 dst_format = sws->dst_format;
1938 29590 sws->src_range |= handle_jpeg(&sws->src_format);
1939 29590 sws->dst_range |= handle_jpeg(&sws->dst_format);
1940
1941
4/4
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 29590 if (src_format != sws->src_format || dst_format != sws->dst_format)
1942 419 av_log(c, AV_LOG_WARNING, "deprecated pixel format used, make sure you did set range correctly\n");
1943
1944
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 29590 if (sws->threads != 1) {
1945 ✗ ret = context_init_threaded(sws, srcFilter, dstFilter);
1946 ✗ if (ret < 0 || sws->threads > 1)
1947 ✗ return ret;
1948 // threading disabled in this build, init as single-threaded
1949 }
1950
1951 29590 return ff_sws_init_single_context(sws, srcFilter, dstFilter);
1952 }
1953
1954 3388 SwsContext *sws_getContext(int srcW, int srcH, enum AVPixelFormat srcFormat,
1955 int dstW, int dstH, enum AVPixelFormat dstFormat,
1956 int flags, SwsFilter *srcFilter,
1957 SwsFilter *dstFilter, const double *param)
1958 {
1959 SwsContext *sws;
1960
1961 3388 sws = alloc_set_opts(srcW, srcH, srcFormat,
1962 dstW, dstH, dstFormat,
1963 flags, param);
1964
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 3388 if (!sws)
1965 ✗ return NULL;
1966
1967
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 3388 if (sws_init_context(sws, srcFilter, dstFilter) < 0) {
1968 ✗ sws_freeContext(sws);
1969 ✗ return NULL;
1970 }
1971
1972 3388 return sws;
1973 }
1974
1975 ✗ static int isnan_vec(SwsVector *a)
1976 {
1977 int i;
1978 ✗ for (i=0; i<a->length; i++)
1979 ✗ if (isnan(a->coeff[i]))
1980 ✗ return 1;
1981 ✗ return 0;
1982 }
1983
1984 ✗ static void makenan_vec(SwsVector *a)
1985 {
1986 int i;
1987 ✗ for (i=0; i<a->length; i++)
1988 ✗ a->coeff[i] = NAN;
1989 ✗ }
1990
1991 ✗ SwsVector *sws_allocVec(int length)
1992 {
1993 SwsVector *vec;
1994
1995 ✗ if(length <= 0 || length > INT_MAX/ sizeof(double))
1996 ✗ return NULL;
1997
1998 ✗ vec = av_malloc(sizeof(SwsVector));
1999 ✗ if (!vec)
2000 ✗ return NULL;
2001 ✗ vec->length = length;
2002 ✗ vec->coeff = av_malloc(sizeof(double) * length);
2003 ✗ if (!vec->coeff)
2004 ✗ av_freep(&vec);
2005 ✗ return vec;
2006 }
2007
2008 ✗ SwsVector *sws_getGaussianVec(double variance, double quality)
2009 {
2010 ✗ const int length = (int)(variance * quality + 0.5) | 1;
2011 int i;
2012 ✗ double middle = (length - 1) * 0.5;
2013 SwsVector *vec;
2014
2015 ✗ if(variance < 0 || quality < 0)
2016 ✗ return NULL;
2017
2018 ✗ vec = sws_allocVec(length);
2019
2020 ✗ if (!vec)
2021 ✗ return NULL;
2022
2023 ✗ for (i = 0; i < length; i++) {
2024 ✗ double dist = i - middle;
2025 ✗ vec->coeff[i] = exp(-dist * dist / (2 * variance * variance)) /
2026 ✗ sqrt(2 * variance * M_PI);
2027 }
2028
2029 ✗ sws_normalizeVec(vec, 1.0);
2030
2031 ✗ return vec;
2032 }
2033
2034 /**
2035 * Allocate and return a vector with length coefficients, all
2036 * with the same value c.
2037 */
2038 static
2039 ✗ SwsVector *sws_getConstVec(double c, int length)
2040 {
2041 int i;
2042 ✗ SwsVector *vec = sws_allocVec(length);
2043
2044 ✗ if (!vec)
2045 ✗ return NULL;
2046
2047 ✗ for (i = 0; i < length; i++)
2048 ✗ vec->coeff[i] = c;
2049
2050 ✗ return vec;
2051 }
2052
2053 /**
2054 * Allocate and return a vector with just one coefficient, with
2055 * value 1.0.
2056 */
2057 static
2058 ✗ SwsVector *sws_getIdentityVec(void)
2059 {
2060 ✗ return sws_getConstVec(1.0, 1);
2061 }
2062
2063 ✗ static double sws_dcVec(SwsVector *a)
2064 {
2065 int i;
2066 ✗ double sum = 0;
2067
2068 ✗ for (i = 0; i < a->length; i++)
2069 ✗ sum += a->coeff[i];
2070
2071 ✗ return sum;
2072 }
2073
2074 ✗ void sws_scaleVec(SwsVector *a, double scalar)
2075 {
2076 int i;
2077
2078 ✗ for (i = 0; i < a->length; i++)
2079 ✗ a->coeff[i] *= scalar;
2080 ✗ }
2081
2082 ✗ void sws_normalizeVec(SwsVector *a, double height)
2083 {
2084 ✗ sws_scaleVec(a, height / sws_dcVec(a));
2085 ✗ }
2086
2087 ✗ static SwsVector *sws_sumVec(SwsVector *a, SwsVector *b)
2088 {
2089 ✗ int length = FFMAX(a->length, b->length);
2090 int i;
2091 ✗ SwsVector *vec = sws_getConstVec(0.0, length);
2092
2093 ✗ if (!vec)
2094 ✗ return NULL;
2095
2096 ✗ for (i = 0; i < a->length; i++)
2097 ✗ vec->coeff[i + (length - 1) / 2 - (a->length - 1) / 2] += a->coeff[i];
2098 ✗ for (i = 0; i < b->length; i++)
2099 ✗ vec->coeff[i + (length - 1) / 2 - (b->length - 1) / 2] += b->coeff[i];
2100
2101 ✗ return vec;
2102 }
2103
2104 /* shift left / or right if "shift" is negative */
2105 ✗ static SwsVector *sws_getShiftedVec(SwsVector *a, int shift)
2106 {
2107 ✗ int length = a->length + FFABS(shift) * 2;
2108 int i;
2109 ✗ SwsVector *vec = sws_getConstVec(0.0, length);
2110
2111 ✗ if (!vec)
2112 ✗ return NULL;
2113
2114 ✗ for (i = 0; i < a->length; i++) {
2115 ✗ vec->coeff[i + (length - 1) / 2 -
2116 ✗ (a->length - 1) / 2 - shift] = a->coeff[i];
2117 }
2118
2119 ✗ return vec;
2120 }
2121
2122 static
2123 ✗ void sws_shiftVec(SwsVector *a, int shift)
2124 {
2125 ✗ SwsVector *shifted = sws_getShiftedVec(a, shift);
2126 ✗ if (!shifted) {
2127 ✗ makenan_vec(a);
2128 ✗ return;
2129 }
2130 ✗ av_free(a->coeff);
2131 ✗ a->coeff = shifted->coeff;
2132 ✗ a->length = shifted->length;
2133 ✗ av_free(shifted);
2134 }
2135
2136 static
2137 ✗ void sws_addVec(SwsVector *a, SwsVector *b)
2138 {
2139 ✗ SwsVector *sum = sws_sumVec(a, b);
2140 ✗ if (!sum) {
2141 ✗ makenan_vec(a);
2142 ✗ return;
2143 }
2144 ✗ av_free(a->coeff);
2145 ✗ a->coeff = sum->coeff;
2146 ✗ a->length = sum->length;
2147 ✗ av_free(sum);
2148 }
2149
2150 /**
2151 * Print with av_log() a textual representation of the vector a
2152 * if log_level <= av_log_level.
2153 */
2154 static
2155 ✗ void sws_printVec2(SwsVector *a, AVClass *log_ctx, int log_level)
2156 {
2157 int i;
2158 ✗ double max = 0;
2159 ✗ double min = 0;
2160 double range;
2161
2162 ✗ for (i = 0; i < a->length; i++)
2163 ✗ if (a->coeff[i] > max)
2164 ✗ max = a->coeff[i];
2165
2166 ✗ for (i = 0; i < a->length; i++)
2167 ✗ if (a->coeff[i] < min)
2168 ✗ min = a->coeff[i];
2169
2170 ✗ range = max - min;
2171
2172 ✗ for (i = 0; i < a->length; i++) {
2173 ✗ int x = (int)((a->coeff[i] - min) * 60.0 / range + 0.5);
2174 ✗ av_log(log_ctx, log_level, "%1.3f ", a->coeff[i]);
2175 ✗ for (; x > 0; x--)
2176 ✗ av_log(log_ctx, log_level, " ");
2177 ✗ av_log(log_ctx, log_level, "|\n");
2178 }
2179 ✗ }
2180
2181 ✗ void sws_freeVec(SwsVector *a)
2182 {
2183 ✗ if (!a)
2184 ✗ return;
2185 ✗ av_freep(&a->coeff);
2186 ✗ a->length = 0;
2187 ✗ av_free(a);
2188 }
2189
2190 ✗ void sws_freeFilter(SwsFilter *filter)
2191 {
2192 ✗ if (!filter)
2193 ✗ return;
2194
2195 ✗ sws_freeVec(filter->lumH);
2196 ✗ sws_freeVec(filter->lumV);
2197 ✗ sws_freeVec(filter->chrH);
2198 ✗ sws_freeVec(filter->chrV);
2199 ✗ av_free(filter);
2200 }
2201
2202 ✗ SwsFilter *sws_getDefaultFilter(float lumaGBlur, float chromaGBlur,
2203 float lumaSharpen, float chromaSharpen,
2204 float chromaHShift, float chromaVShift,
2205 int verbose)
2206 {
2207 ✗ SwsFilter *filter = av_malloc(sizeof(SwsFilter));
2208 ✗ if (!filter)
2209 ✗ return NULL;
2210
2211 ✗ if (lumaGBlur != 0.0) {
2212 ✗ filter->lumH = sws_getGaussianVec(lumaGBlur, 3.0);
2213 ✗ filter->lumV = sws_getGaussianVec(lumaGBlur, 3.0);
2214 } else {
2215 ✗ filter->lumH = sws_getIdentityVec();
2216 ✗ filter->lumV = sws_getIdentityVec();
2217 }
2218
2219 ✗ if (chromaGBlur != 0.0) {
2220 ✗ filter->chrH = sws_getGaussianVec(chromaGBlur, 3.0);
2221 ✗ filter->chrV = sws_getGaussianVec(chromaGBlur, 3.0);
2222 } else {
2223 ✗ filter->chrH = sws_getIdentityVec();
2224 ✗ filter->chrV = sws_getIdentityVec();
2225 }
2226
2227 ✗ if (!filter->lumH || !filter->lumV || !filter->chrH || !filter->chrV)
2228 ✗ goto fail;
2229
2230 ✗ if (chromaSharpen != 0.0) {
2231 ✗ SwsVector *id = sws_getIdentityVec();
2232 ✗ if (!id)
2233 ✗ goto fail;
2234 ✗ sws_scaleVec(filter->chrH, -chromaSharpen);
2235 ✗ sws_scaleVec(filter->chrV, -chromaSharpen);
2236 ✗ sws_addVec(filter->chrH, id);
2237 ✗ sws_addVec(filter->chrV, id);
2238 ✗ sws_freeVec(id);
2239 }
2240
2241 ✗ if (lumaSharpen != 0.0) {
2242 ✗ SwsVector *id = sws_getIdentityVec();
2243 ✗ if (!id)
2244 ✗ goto fail;
2245 ✗ sws_scaleVec(filter->lumH, -lumaSharpen);
2246 ✗ sws_scaleVec(filter->lumV, -lumaSharpen);
2247 ✗ sws_addVec(filter->lumH, id);
2248 ✗ sws_addVec(filter->lumV, id);
2249 ✗ sws_freeVec(id);
2250 }
2251
2252 ✗ if (chromaHShift != 0.0)
2253 ✗ sws_shiftVec(filter->chrH, (int)(chromaHShift + 0.5));
2254
2255 ✗ if (chromaVShift != 0.0)
2256 ✗ sws_shiftVec(filter->chrV, (int)(chromaVShift + 0.5));
2257
2258 ✗ sws_normalizeVec(filter->chrH, 1.0);
2259 ✗ sws_normalizeVec(filter->chrV, 1.0);
2260 ✗ sws_normalizeVec(filter->lumH, 1.0);
2261 ✗ sws_normalizeVec(filter->lumV, 1.0);
2262
2263 ✗ if (isnan_vec(filter->chrH) ||
2264 ✗ isnan_vec(filter->chrV) ||
2265 ✗ isnan_vec(filter->lumH) ||
2266 ✗ isnan_vec(filter->lumV))
2267 ✗ goto fail;
2268
2269 ✗ if (verbose)
2270 ✗ sws_printVec2(filter->chrH, NULL, AV_LOG_DEBUG);
2271 ✗ if (verbose)
2272 ✗ sws_printVec2(filter->lumH, NULL, AV_LOG_DEBUG);
2273
2274 ✗ return filter;
2275
2276 ✗ fail:
2277 ✗ sws_freeVec(filter->lumH);
2278 ✗ sws_freeVec(filter->lumV);
2279 ✗ sws_freeVec(filter->chrH);
2280 ✗ sws_freeVec(filter->chrV);
2281 ✗ av_freep(&filter);
2282 ✗ return NULL;
2283 }
2284
2285 305297 void sws_freeContext(SwsContext *sws)
2286 {
2287 305297 SwsInternal *c = sws_internal(sws);
2288 int i;
2289
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 305297 if (!c)
2290 228973 return;
2291
2292 76324 av_refstruct_unref(&c->hw_priv);
2293
2294
2/2
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 228972 for (i = 0; i < FF_ARRAY_ELEMS(c->graph); i++)
2295 152648 ff_sws_graph_free(&c->graph[i]);
2296 76324 ff_frame_pool_uninit(&c->frame_pool);
2297
2298
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 99442 for (i = 0; i < c->nb_slice_ctx; i++)
2299 23118 sws_freeContext(c->slice_ctx[i]);
2300 76324 av_freep(&c->slice_ctx);
2301 76324 av_freep(&c->slice_err);
2302
2303 76324 avpriv_slicethread_free(&c->slicethread);
2304
2305
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 381620 for (i = 0; i < 4; i++)
2306 305296 av_freep(&c->dither_error[i]);
2307
2308 76324 av_frame_free(&c->frame_src);
2309 76324 av_frame_free(&c->frame_dst);
2310
2311 76324 av_freep(&c->src_ranges.ranges);
2312
2313 76324 av_freep(&c->vLumFilter);
2314 76324 av_freep(&c->vChrFilter);
2315 76324 av_freep(&c->hLumFilter);
2316 76324 av_freep(&c->hChrFilter);
2317 #if HAVE_ALTIVEC
2318 ff_sws_free_altivec_bufs(c);
2319 #endif
2320
2321 76324 av_freep(&c->vLumFilterPos);
2322 76324 av_freep(&c->vChrFilterPos);
2323 76324 av_freep(&c->hLumFilterPos);
2324 76324 av_freep(&c->hChrFilterPos);
2325
2326 #if HAVE_MMX_INLINE
2327 #if USE_MMAP
2328
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 76324 if (c->lumMmxextFilterCode)
2329 ✗ munmap(c->lumMmxextFilterCode, c->lumMmxextFilterCodeSize);
2330
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 76324 if (c->chrMmxextFilterCode)
2331 ✗ munmap(c->chrMmxextFilterCode, c->chrMmxextFilterCodeSize);
2332 #elif HAVE_VIRTUALALLOC
2333 if (c->lumMmxextFilterCode)
2334 VirtualFree(c->lumMmxextFilterCode, 0, MEM_RELEASE);
2335 if (c->chrMmxextFilterCode)
2336 VirtualFree(c->chrMmxextFilterCode, 0, MEM_RELEASE);
2337 #else
2338 av_free(c->lumMmxextFilterCode);
2339 av_free(c->chrMmxextFilterCode);
2340 #endif
2341 76324 c->lumMmxextFilterCode = NULL;
2342 76324 c->chrMmxextFilterCode = NULL;
2343 #endif /* HAVE_MMX_INLINE */
2344
2345 76324 av_freep(&c->yuvTable);
2346 76324 av_freep(&c->formatConvBuffer);
2347
2348 76324 sws_freeContext(c->cascaded_context[0]);
2349 76324 sws_freeContext(c->cascaded_context[1]);
2350 76324 sws_freeContext(c->cascaded_context[2]);
2351 76324 memset(c->cascaded_context, 0, sizeof(c->cascaded_context));
2352 76324 av_freep(&c->cascaded_tmp[0][0]);
2353 76324 av_freep(&c->cascaded_tmp[1][0]);
2354
2355 76324 av_freep(&c->gamma);
2356 76324 av_freep(&c->inv_gamma);
2357 #if CONFIG_SMALL
2358 av_freep(&c->xyz2rgb.gamma.in);
2359 #endif
2360
2361 76324 av_freep(&c->rgb0_scratch);
2362 76324 av_freep(&c->xyz_scratch);
2363
2364 76324 ff_free_filters(c);
2365
2366 76324 av_free(c);
2367 }
2368
2369 49384 void sws_free_context(SwsContext **pctx)
2370 {
2371 49384 SwsContext *ctx = *pctx;
2372
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 49384 if (!ctx)
2373 ✗ return;
2374
2375 49384 sws_freeContext(ctx);
2376 49384 *pctx = NULL;
2377 }
2378
2379 ✗ SwsContext *sws_getCachedContext(SwsContext *prev, int srcW,
2380 int srcH, enum AVPixelFormat srcFormat,
2381 int dstW, int dstH,
2382 enum AVPixelFormat dstFormat, int flags,
2383 SwsFilter *srcFilter,
2384 SwsFilter *dstFilter,
2385 const double *param)
2386 {
2387 SwsContext *sws;
2388 static const double default_param[2] = { SWS_PARAM_DEFAULT,
2389 SWS_PARAM_DEFAULT };
2390
2391 ✗ if (!param)
2392 ✗ param = default_param;
2393
2394 ✗ if (prev && (prev->src_w == srcW &&
2395 ✗ prev->src_h == srcH &&
2396 ✗ prev->src_format == srcFormat &&
2397 ✗ prev->dst_w == dstW &&
2398 ✗ prev->dst_h == dstH &&
2399 ✗ prev->dst_format == dstFormat &&
2400 ✗ prev->flags == flags &&
2401 ✗ !memcmp(prev->scaler_params, param,
2402 sizeof(prev->scaler_params)))) {
2403 ✗ return prev;
2404 }
2405
2406 ✗ if (!(sws = sws_alloc_context())) {
2407 ✗ sws_free_context(&prev);
2408 ✗ return NULL;
2409 }
2410
2411 ✗ if (prev) {
2412 ✗ av_opt_copy(sws, prev);
2413 ✗ sws_free_context(&prev);
2414 }
2415
2416 ✗ sws->src_w = srcW;
2417 ✗ sws->src_h = srcH;
2418 ✗ sws->src_format = srcFormat;
2419 ✗ sws->dst_w = dstW;
2420 ✗ sws->dst_h = dstH;
2421 ✗ sws->dst_format = dstFormat;
2422 ✗ sws->flags = flags;
2423 ✗ for (int i = 0; i < SWS_NUM_SCALER_PARAMS; i++)
2424 ✗ sws->scaler_params[i] = param[i];
2425
2426 ✗ if (sws_init_context(sws, srcFilter, dstFilter) < 0)
2427 ✗ sws_free_context(&sws);
2428
2429 ✗ return sws;
2430 }
2431
2432 ✗ int ff_range_add(RangeList *rl, unsigned int start, unsigned int len)
2433 {
2434 Range *tmp;
2435 unsigned int idx;
2436
2437 /* find the first existing range after the new one */
2438 ✗ for (idx = 0; idx < rl->nb_ranges; idx++)
2439 ✗ if (rl->ranges[idx].start > start)
2440 ✗ break;
2441
2442 /* check for overlap */
2443 ✗ if (idx > 0) {
2444 ✗ Range *prev = &rl->ranges[idx - 1];
2445 ✗ if (prev->start + prev->len > start)
2446 ✗ return AVERROR(EINVAL);
2447 }
2448 ✗ if (idx < rl->nb_ranges) {
2449 ✗ Range *next = &rl->ranges[idx];
2450 ✗ if (start + len > next->start)
2451 ✗ return AVERROR(EINVAL);
2452 }
2453
2454 ✗ tmp = av_fast_realloc(rl->ranges, &rl->ranges_allocated,
2455 ✗ (rl->nb_ranges + 1) * sizeof(*rl->ranges));
2456 ✗ if (!tmp)
2457 ✗ return AVERROR(ENOMEM);
2458 ✗ rl->ranges = tmp;
2459
2460 ✗ memmove(rl->ranges + idx + 1, rl->ranges + idx,
2461 ✗ sizeof(*rl->ranges) * (rl->nb_ranges - idx));
2462 ✗ rl->ranges[idx].start = start;
2463 ✗ rl->ranges[idx].len = len;
2464 ✗ rl->nb_ranges++;
2465
2466 /* merge ranges */
2467 ✗ if (idx > 0) {
2468 ✗ Range *prev = &rl->ranges[idx - 1];
2469 ✗ Range *cur = &rl->ranges[idx];
2470 ✗ if (prev->start + prev->len == cur->start) {
2471 ✗ prev->len += cur->len;
2472 ✗ memmove(rl->ranges + idx - 1, rl->ranges + idx,
2473 ✗ sizeof(*rl->ranges) * (rl->nb_ranges - idx));
2474 ✗ rl->nb_ranges--;
2475 ✗ idx--;
2476 }
2477 }
2478 ✗ if (idx < rl->nb_ranges - 1) {
2479 ✗ Range *cur = &rl->ranges[idx];
2480 ✗ Range *next = &rl->ranges[idx + 1];
2481 ✗ if (cur->start + cur->len == next->start) {
2482 ✗ cur->len += next->len;
2483 ✗ memmove(rl->ranges + idx, rl->ranges + idx + 1,
2484 ✗ sizeof(*rl->ranges) * (rl->nb_ranges - idx - 1));
2485 ✗ rl->nb_ranges--;
2486 }
2487 }
2488
2489 ✗ return 0;
2490 }
2491