2 * Copyright (C) 2001-2003 Michael Niedermayer <michaelni@gmx.at>
4 * This file is part of FFmpeg.
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
23 #define _DEFAULT_SOURCE
24 #define _SVID_SOURCE // needed for MAP_ANONYMOUS
25 #define _DARWIN_C_SOURCE // needed for MAP_ANON
32 #if defined(MAP_ANON) && !defined(MAP_ANONYMOUS)
33 #define MAP_ANONYMOUS MAP_ANON
37 #define WIN32_LEAN_AND_MEAN
41 #include "libavutil/attributes.h"
42 #include "libavutil/avassert.h"
43 #include "libavutil/avutil.h"
44 #include "libavutil/bswap.h"
45 #include "libavutil/cpu.h"
46 #include "libavutil/imgutils.h"
47 #include "libavutil/intreadwrite.h"
48 #include "libavutil/libm.h"
49 #include "libavutil/mathematics.h"
50 #include "libavutil/opt.h"
51 #include "libavutil/pixdesc.h"
52 #include "libavutil/aarch64/cpu.h"
53 #include "libavutil/ppc/cpu.h"
54 #include "libavutil/x86/asm.h"
55 #include "libavutil/x86/cpu.h"
57 // We have to implement deprecated functions until they are removed, this is the
58 // simplest way to prevent warnings
59 #undef attribute_deprecated
60 #define attribute_deprecated
64 #include "swscale_internal.h"
66 #if !FF_API_SWS_VECTOR
67 static SwsVector *sws_getIdentityVec(void);
68 static void sws_addVec(SwsVector *a, SwsVector *b);
69 static void sws_shiftVec(SwsVector *a, int shift);
70 static void sws_printVec2(SwsVector *a, AVClass *log_ctx, int log_level);
73 static void handle_formats(SwsContext *c);
75 unsigned swscale_version(void)
77 av_assert0(LIBSWSCALE_VERSION_MICRO >= 100);
78 return LIBSWSCALE_VERSION_INT;
81 const char *swscale_configuration(void)
83 return FFMPEG_CONFIGURATION;
86 const char *swscale_license(void)
88 #define LICENSE_PREFIX "libswscale license: "
89 return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
92 typedef struct FormatEntry {
93 uint8_t is_supported_in :1;
94 uint8_t is_supported_out :1;
95 uint8_t is_supported_endianness :1;
98 static const FormatEntry format_entries[AV_PIX_FMT_NB] = {
99 [AV_PIX_FMT_YUV420P] = { 1, 1 },
100 [AV_PIX_FMT_YUYV422] = { 1, 1 },
101 [AV_PIX_FMT_RGB24] = { 1, 1 },
102 [AV_PIX_FMT_BGR24] = { 1, 1 },
103 [AV_PIX_FMT_YUV422P] = { 1, 1 },
104 [AV_PIX_FMT_YUV444P] = { 1, 1 },
105 [AV_PIX_FMT_YUV410P] = { 1, 1 },
106 [AV_PIX_FMT_YUV411P] = { 1, 1 },
107 [AV_PIX_FMT_GRAY8] = { 1, 1 },
108 [AV_PIX_FMT_MONOWHITE] = { 1, 1 },
109 [AV_PIX_FMT_MONOBLACK] = { 1, 1 },
110 [AV_PIX_FMT_PAL8] = { 1, 0 },
111 [AV_PIX_FMT_YUVJ420P] = { 1, 1 },
112 [AV_PIX_FMT_YUVJ411P] = { 1, 1 },
113 [AV_PIX_FMT_YUVJ422P] = { 1, 1 },
114 [AV_PIX_FMT_YUVJ444P] = { 1, 1 },
115 [AV_PIX_FMT_YVYU422] = { 1, 1 },
116 [AV_PIX_FMT_UYVY422] = { 1, 1 },
117 [AV_PIX_FMT_UYYVYY411] = { 0, 0 },
118 [AV_PIX_FMT_BGR8] = { 1, 1 },
119 [AV_PIX_FMT_BGR4] = { 0, 1 },
120 [AV_PIX_FMT_BGR4_BYTE] = { 1, 1 },
121 [AV_PIX_FMT_RGB8] = { 1, 1 },
122 [AV_PIX_FMT_RGB4] = { 0, 1 },
123 [AV_PIX_FMT_RGB4_BYTE] = { 1, 1 },
124 [AV_PIX_FMT_NV12] = { 1, 1 },
125 [AV_PIX_FMT_NV21] = { 1, 1 },
126 [AV_PIX_FMT_ARGB] = { 1, 1 },
127 [AV_PIX_FMT_RGBA] = { 1, 1 },
128 [AV_PIX_FMT_ABGR] = { 1, 1 },
129 [AV_PIX_FMT_BGRA] = { 1, 1 },
130 [AV_PIX_FMT_0RGB] = { 1, 1 },
131 [AV_PIX_FMT_RGB0] = { 1, 1 },
132 [AV_PIX_FMT_0BGR] = { 1, 1 },
133 [AV_PIX_FMT_BGR0] = { 1, 1 },
134 [AV_PIX_FMT_GRAY16BE] = { 1, 1 },
135 [AV_PIX_FMT_GRAY16LE] = { 1, 1 },
136 [AV_PIX_FMT_YUV440P] = { 1, 1 },
137 [AV_PIX_FMT_YUVJ440P] = { 1, 1 },
138 [AV_PIX_FMT_YUV440P10LE] = { 1, 1 },
139 [AV_PIX_FMT_YUV440P10BE] = { 1, 1 },
140 [AV_PIX_FMT_YUV440P12LE] = { 1, 1 },
141 [AV_PIX_FMT_YUV440P12BE] = { 1, 1 },
142 [AV_PIX_FMT_YUVA420P] = { 1, 1 },
143 [AV_PIX_FMT_YUVA422P] = { 1, 1 },
144 [AV_PIX_FMT_YUVA444P] = { 1, 1 },
145 [AV_PIX_FMT_YUVA420P9BE] = { 1, 1 },
146 [AV_PIX_FMT_YUVA420P9LE] = { 1, 1 },
147 [AV_PIX_FMT_YUVA422P9BE] = { 1, 1 },
148 [AV_PIX_FMT_YUVA422P9LE] = { 1, 1 },
149 [AV_PIX_FMT_YUVA444P9BE] = { 1, 1 },
150 [AV_PIX_FMT_YUVA444P9LE] = { 1, 1 },
151 [AV_PIX_FMT_YUVA420P10BE]= { 1, 1 },
152 [AV_PIX_FMT_YUVA420P10LE]= { 1, 1 },
153 [AV_PIX_FMT_YUVA422P10BE]= { 1, 1 },
154 [AV_PIX_FMT_YUVA422P10LE]= { 1, 1 },
155 [AV_PIX_FMT_YUVA444P10BE]= { 1, 1 },
156 [AV_PIX_FMT_YUVA444P10LE]= { 1, 1 },
157 [AV_PIX_FMT_YUVA420P16BE]= { 1, 1 },
158 [AV_PIX_FMT_YUVA420P16LE]= { 1, 1 },
159 [AV_PIX_FMT_YUVA422P16BE]= { 1, 1 },
160 [AV_PIX_FMT_YUVA422P16LE]= { 1, 1 },
161 [AV_PIX_FMT_YUVA444P16BE]= { 1, 1 },
162 [AV_PIX_FMT_YUVA444P16LE]= { 1, 1 },
163 [AV_PIX_FMT_RGB48BE] = { 1, 1 },
164 [AV_PIX_FMT_RGB48LE] = { 1, 1 },
165 [AV_PIX_FMT_RGBA64BE] = { 1, 1, 1 },
166 [AV_PIX_FMT_RGBA64LE] = { 1, 1, 1 },
167 [AV_PIX_FMT_RGB565BE] = { 1, 1 },
168 [AV_PIX_FMT_RGB565LE] = { 1, 1 },
169 [AV_PIX_FMT_RGB555BE] = { 1, 1 },
170 [AV_PIX_FMT_RGB555LE] = { 1, 1 },
171 [AV_PIX_FMT_BGR565BE] = { 1, 1 },
172 [AV_PIX_FMT_BGR565LE] = { 1, 1 },
173 [AV_PIX_FMT_BGR555BE] = { 1, 1 },
174 [AV_PIX_FMT_BGR555LE] = { 1, 1 },
175 [AV_PIX_FMT_YUV420P16LE] = { 1, 1 },
176 [AV_PIX_FMT_YUV420P16BE] = { 1, 1 },
177 [AV_PIX_FMT_YUV422P16LE] = { 1, 1 },
178 [AV_PIX_FMT_YUV422P16BE] = { 1, 1 },
179 [AV_PIX_FMT_YUV444P16LE] = { 1, 1 },
180 [AV_PIX_FMT_YUV444P16BE] = { 1, 1 },
181 [AV_PIX_FMT_RGB444LE] = { 1, 1 },
182 [AV_PIX_FMT_RGB444BE] = { 1, 1 },
183 [AV_PIX_FMT_BGR444LE] = { 1, 1 },
184 [AV_PIX_FMT_BGR444BE] = { 1, 1 },
185 [AV_PIX_FMT_YA8] = { 1, 1 },
186 [AV_PIX_FMT_YA16BE] = { 1, 0 },
187 [AV_PIX_FMT_YA16LE] = { 1, 0 },
188 [AV_PIX_FMT_BGR48BE] = { 1, 1 },
189 [AV_PIX_FMT_BGR48LE] = { 1, 1 },
190 [AV_PIX_FMT_BGRA64BE] = { 1, 1, 1 },
191 [AV_PIX_FMT_BGRA64LE] = { 1, 1, 1 },
192 [AV_PIX_FMT_YUV420P9BE] = { 1, 1 },
193 [AV_PIX_FMT_YUV420P9LE] = { 1, 1 },
194 [AV_PIX_FMT_YUV420P10BE] = { 1, 1 },
195 [AV_PIX_FMT_YUV420P10LE] = { 1, 1 },
196 [AV_PIX_FMT_YUV420P12BE] = { 1, 1 },
197 [AV_PIX_FMT_YUV420P12LE] = { 1, 1 },
198 [AV_PIX_FMT_YUV420P14BE] = { 1, 1 },
199 [AV_PIX_FMT_YUV420P14LE] = { 1, 1 },
200 [AV_PIX_FMT_YUV422P9BE] = { 1, 1 },
201 [AV_PIX_FMT_YUV422P9LE] = { 1, 1 },
202 [AV_PIX_FMT_YUV422P10BE] = { 1, 1 },
203 [AV_PIX_FMT_YUV422P10LE] = { 1, 1 },
204 [AV_PIX_FMT_YUV422P12BE] = { 1, 1 },
205 [AV_PIX_FMT_YUV422P12LE] = { 1, 1 },
206 [AV_PIX_FMT_YUV422P14BE] = { 1, 1 },
207 [AV_PIX_FMT_YUV422P14LE] = { 1, 1 },
208 [AV_PIX_FMT_YUV444P9BE] = { 1, 1 },
209 [AV_PIX_FMT_YUV444P9LE] = { 1, 1 },
210 [AV_PIX_FMT_YUV444P10BE] = { 1, 1 },
211 [AV_PIX_FMT_YUV444P10LE] = { 1, 1 },
212 [AV_PIX_FMT_YUV444P12BE] = { 1, 1 },
213 [AV_PIX_FMT_YUV444P12LE] = { 1, 1 },
214 [AV_PIX_FMT_YUV444P14BE] = { 1, 1 },
215 [AV_PIX_FMT_YUV444P14LE] = { 1, 1 },
216 [AV_PIX_FMT_GBRP] = { 1, 1 },
217 [AV_PIX_FMT_GBRP9LE] = { 1, 1 },
218 [AV_PIX_FMT_GBRP9BE] = { 1, 1 },
219 [AV_PIX_FMT_GBRP10LE] = { 1, 1 },
220 [AV_PIX_FMT_GBRP10BE] = { 1, 1 },
221 [AV_PIX_FMT_GBRP12LE] = { 1, 1 },
222 [AV_PIX_FMT_GBRP12BE] = { 1, 1 },
223 [AV_PIX_FMT_GBRAP12LE] = { 1, 0 },
224 [AV_PIX_FMT_GBRAP12BE] = { 1, 0 },
225 [AV_PIX_FMT_GBRP14LE] = { 1, 1 },
226 [AV_PIX_FMT_GBRP14BE] = { 1, 1 },
227 [AV_PIX_FMT_GBRP16LE] = { 1, 0 },
228 [AV_PIX_FMT_GBRP16BE] = { 1, 0 },
229 [AV_PIX_FMT_GBRAP] = { 1, 1 },
230 [AV_PIX_FMT_GBRAP16LE] = { 1, 0 },
231 [AV_PIX_FMT_GBRAP16BE] = { 1, 0 },
232 [AV_PIX_FMT_BAYER_BGGR8] = { 1, 0 },
233 [AV_PIX_FMT_BAYER_RGGB8] = { 1, 0 },
234 [AV_PIX_FMT_BAYER_GBRG8] = { 1, 0 },
235 [AV_PIX_FMT_BAYER_GRBG8] = { 1, 0 },
236 [AV_PIX_FMT_BAYER_BGGR16LE] = { 1, 0 },
237 [AV_PIX_FMT_BAYER_BGGR16BE] = { 1, 0 },
238 [AV_PIX_FMT_BAYER_RGGB16LE] = { 1, 0 },
239 [AV_PIX_FMT_BAYER_RGGB16BE] = { 1, 0 },
240 [AV_PIX_FMT_BAYER_GBRG16LE] = { 1, 0 },
241 [AV_PIX_FMT_BAYER_GBRG16BE] = { 1, 0 },
242 [AV_PIX_FMT_BAYER_GRBG16LE] = { 1, 0 },
243 [AV_PIX_FMT_BAYER_GRBG16BE] = { 1, 0 },
244 [AV_PIX_FMT_XYZ12BE] = { 1, 1, 1 },
245 [AV_PIX_FMT_XYZ12LE] = { 1, 1, 1 },
246 [AV_PIX_FMT_AYUV64LE] = { 1, 1},
247 [AV_PIX_FMT_P010LE] = { 1, 0 },
248 [AV_PIX_FMT_P010BE] = { 1, 0 },
251 int sws_isSupportedInput(enum AVPixelFormat pix_fmt)
253 return (unsigned)pix_fmt < AV_PIX_FMT_NB ?
254 format_entries[pix_fmt].is_supported_in : 0;
257 int sws_isSupportedOutput(enum AVPixelFormat pix_fmt)
259 return (unsigned)pix_fmt < AV_PIX_FMT_NB ?
260 format_entries[pix_fmt].is_supported_out : 0;
263 int sws_isSupportedEndiannessConversion(enum AVPixelFormat pix_fmt)
265 return (unsigned)pix_fmt < AV_PIX_FMT_NB ?
266 format_entries[pix_fmt].is_supported_endianness : 0;
269 static double getSplineCoeff(double a, double b, double c, double d,
273 return ((d * dist + c) * dist + b) * dist + a;
275 return getSplineCoeff(0.0,
276 b + 2.0 * c + 3.0 * d,
278 -b - 3.0 * c - 6.0 * d,
282 static av_cold int get_local_pos(SwsContext *s, int chr_subsample, int pos, int dir)
284 if (pos == -1 || pos <= -513) {
285 pos = (128 << chr_subsample) - 128;
287 pos += 128; // relative to ideal left edge
288 return pos >> chr_subsample;
292 int flag; ///< flag associated to the algorithm
293 const char *description; ///< human-readable description
294 int size_factor; ///< size factor used when initing the filters
297 static const ScaleAlgorithm scale_algorithms[] = {
298 { SWS_AREA, "area averaging", 1 /* downscale only, for upscale it is bilinear */ },
299 { SWS_BICUBIC, "bicubic", 4 },
300 { SWS_BICUBLIN, "luma bicubic / chroma bilinear", -1 },
301 { SWS_BILINEAR, "bilinear", 2 },
302 { SWS_FAST_BILINEAR, "fast bilinear", -1 },
303 { SWS_GAUSS, "Gaussian", 8 /* infinite ;) */ },
304 { SWS_LANCZOS, "Lanczos", -1 /* custom */ },
305 { SWS_POINT, "nearest neighbor / point", -1 },
306 { SWS_SINC, "sinc", 20 /* infinite ;) */ },
307 { SWS_SPLINE, "bicubic spline", 20 /* infinite :)*/ },
308 { SWS_X, "experimental", 8 },
311 static av_cold int initFilter(int16_t **outFilter, int32_t **filterPos,
312 int *outFilterSize, int xInc, int srcW,
313 int dstW, int filterAlign, int one,
314 int flags, int cpu_flags,
315 SwsVector *srcFilter, SwsVector *dstFilter,
316 double param[2], int srcPos, int dstPos)
322 int64_t *filter = NULL;
323 int64_t *filter2 = NULL;
324 const int64_t fone = 1LL << (54 - FFMIN(av_log2(srcW/dstW), 8));
327 emms_c(); // FIXME should not be required but IS (even for non-MMX versions)
329 // NOTE: the +3 is for the MMX(+1) / SSE(+3) scaler which reads over the end
330 FF_ALLOC_ARRAY_OR_GOTO(NULL, *filterPos, (dstW + 3), sizeof(**filterPos), fail);
332 if (FFABS(xInc - 0x10000) < 10 && srcPos == dstPos) { // unscaled
335 FF_ALLOCZ_ARRAY_OR_GOTO(NULL, filter,
336 dstW, sizeof(*filter) * filterSize, fail);
338 for (i = 0; i < dstW; i++) {
339 filter[i * filterSize] = fone;
342 } else if (flags & SWS_POINT) { // lame looking point sampling mode
346 FF_ALLOC_ARRAY_OR_GOTO(NULL, filter,
347 dstW, sizeof(*filter) * filterSize, fail);
349 xDstInSrc = ((dstPos*(int64_t)xInc)>>8) - ((srcPos*0x8000LL)>>7);
350 for (i = 0; i < dstW; i++) {
351 int xx = (xDstInSrc - ((filterSize - 1) << 15) + (1 << 15)) >> 16;
353 (*filterPos)[i] = xx;
357 } else if ((xInc <= (1 << 16) && (flags & SWS_AREA)) ||
358 (flags & SWS_FAST_BILINEAR)) { // bilinear upscale
362 FF_ALLOC_ARRAY_OR_GOTO(NULL, filter,
363 dstW, sizeof(*filter) * filterSize, fail);
365 xDstInSrc = ((dstPos*(int64_t)xInc)>>8) - ((srcPos*0x8000LL)>>7);
366 for (i = 0; i < dstW; i++) {
367 int xx = (xDstInSrc - ((filterSize - 1) << 15) + (1 << 15)) >> 16;
370 (*filterPos)[i] = xx;
371 // bilinear upscale / linear interpolate / area averaging
372 for (j = 0; j < filterSize; j++) {
373 int64_t coeff= fone - FFABS(((int64_t)xx<<16) - xDstInSrc)*(fone>>16);
376 filter[i * filterSize + j] = coeff;
385 for (i = 0; i < FF_ARRAY_ELEMS(scale_algorithms); i++) {
386 if (flags & scale_algorithms[i].flag && scale_algorithms[i].size_factor > 0) {
387 sizeFactor = scale_algorithms[i].size_factor;
391 if (flags & SWS_LANCZOS)
392 sizeFactor = param[0] != SWS_PARAM_DEFAULT ? ceil(2 * param[0]) : 6;
393 av_assert0(sizeFactor > 0);
396 filterSize = 1 + sizeFactor; // upscale
398 filterSize = 1 + (sizeFactor * srcW + dstW - 1) / dstW;
400 filterSize = FFMIN(filterSize, srcW - 2);
401 filterSize = FFMAX(filterSize, 1);
403 FF_ALLOC_ARRAY_OR_GOTO(NULL, filter,
404 dstW, sizeof(*filter) * filterSize, fail);
406 xDstInSrc = ((dstPos*(int64_t)xInc)>>7) - ((srcPos*0x10000LL)>>7);
407 for (i = 0; i < dstW; i++) {
408 int xx = (xDstInSrc - (filterSize - 2) * (1LL<<16)) / (1 << 17);
410 (*filterPos)[i] = xx;
411 for (j = 0; j < filterSize; j++) {
412 int64_t d = (FFABS(((int64_t)xx * (1 << 17)) - xDstInSrc)) << 13;
418 floatd = d * (1.0 / (1 << 30));
420 if (flags & SWS_BICUBIC) {
421 int64_t B = (param[0] != SWS_PARAM_DEFAULT ? param[0] : 0) * (1 << 24);
422 int64_t C = (param[1] != SWS_PARAM_DEFAULT ? param[1] : 0.6) * (1 << 24);
424 if (d >= 1LL << 31) {
427 int64_t dd = (d * d) >> 30;
428 int64_t ddd = (dd * d) >> 30;
431 coeff = (12 * (1 << 24) - 9 * B - 6 * C) * ddd +
432 (-18 * (1 << 24) + 12 * B + 6 * C) * dd +
433 (6 * (1 << 24) - 2 * B) * (1 << 30);
435 coeff = (-B - 6 * C) * ddd +
436 (6 * B + 30 * C) * dd +
437 (-12 * B - 48 * C) * d +
438 (8 * B + 24 * C) * (1 << 30);
440 coeff /= (1LL<<54)/fone;
443 else if (flags & SWS_X) {
444 double p = param ? param * 0.01 : 0.3;
445 coeff = d ? sin(d * M_PI) / (d * M_PI) : 1.0;
446 coeff *= pow(2.0, -p * d * d);
449 else if (flags & SWS_X) {
450 double A = param[0] != SWS_PARAM_DEFAULT ? param[0] : 1.0;
454 c = cos(floatd * M_PI);
461 coeff = (c * 0.5 + 0.5) * fone;
462 } else if (flags & SWS_AREA) {
463 int64_t d2 = d - (1 << 29);
464 if (d2 * xInc < -(1LL << (29 + 16)))
465 coeff = 1.0 * (1LL << (30 + 16));
466 else if (d2 * xInc < (1LL << (29 + 16)))
467 coeff = -d2 * xInc + (1LL << (29 + 16));
470 coeff *= fone >> (30 + 16);
471 } else if (flags & SWS_GAUSS) {
472 double p = param[0] != SWS_PARAM_DEFAULT ? param[0] : 3.0;
473 coeff = exp2(-p * floatd * floatd) * fone;
474 } else if (flags & SWS_SINC) {
475 coeff = (d ? sin(floatd * M_PI) / (floatd * M_PI) : 1.0) * fone;
476 } else if (flags & SWS_LANCZOS) {
477 double p = param[0] != SWS_PARAM_DEFAULT ? param[0] : 3.0;
478 coeff = (d ? sin(floatd * M_PI) * sin(floatd * M_PI / p) /
479 (floatd * floatd * M_PI * M_PI / p) : 1.0) * fone;
482 } else if (flags & SWS_BILINEAR) {
483 coeff = (1 << 30) - d;
487 } else if (flags & SWS_SPLINE) {
488 double p = -2.196152422706632;
489 coeff = getSplineCoeff(1.0, 0.0, p, -p - 1.0, floatd) * fone;
494 filter[i * filterSize + j] = coeff;
497 xDstInSrc += 2 * xInc;
501 /* apply src & dst Filter to filter -> filter2
504 av_assert0(filterSize > 0);
505 filter2Size = filterSize;
507 filter2Size += srcFilter->length - 1;
509 filter2Size += dstFilter->length - 1;
510 av_assert0(filter2Size > 0);
511 FF_ALLOCZ_ARRAY_OR_GOTO(NULL, filter2, dstW, filter2Size * sizeof(*filter2), fail);
513 for (i = 0; i < dstW; i++) {
517 for (k = 0; k < srcFilter->length; k++) {
518 for (j = 0; j < filterSize; j++)
519 filter2[i * filter2Size + k + j] +=
520 srcFilter->coeff[k] * filter[i * filterSize + j];
523 for (j = 0; j < filterSize; j++)
524 filter2[i * filter2Size + j] = filter[i * filterSize + j];
528 (*filterPos)[i] += (filterSize - 1) / 2 - (filter2Size - 1) / 2;
532 /* try to reduce the filter-size (step1 find size and shift left) */
533 // Assume it is near normalized (*0.5 or *2.0 is OK but * 0.001 is not).
535 for (i = dstW - 1; i >= 0; i--) {
536 int min = filter2Size;
538 int64_t cutOff = 0.0;
540 /* get rid of near zero elements on the left by shifting left */
541 for (j = 0; j < filter2Size; j++) {
543 cutOff += FFABS(filter2[i * filter2Size]);
545 if (cutOff > SWS_MAX_REDUCE_CUTOFF * fone)
548 /* preserve monotonicity because the core can't handle the
549 * filter otherwise */
550 if (i < dstW - 1 && (*filterPos)[i] >= (*filterPos)[i + 1])
553 // move filter coefficients left
554 for (k = 1; k < filter2Size; k++)
555 filter2[i * filter2Size + k - 1] = filter2[i * filter2Size + k];
556 filter2[i * filter2Size + k - 1] = 0;
561 /* count near zeros on the right */
562 for (j = filter2Size - 1; j > 0; j--) {
563 cutOff += FFABS(filter2[i * filter2Size + j]);
565 if (cutOff > SWS_MAX_REDUCE_CUTOFF * fone)
570 if (min > minFilterSize)
574 if (PPC_ALTIVEC(cpu_flags)) {
575 // we can handle the special case 4, so we don't want to go the full 8
576 if (minFilterSize < 5)
579 /* We really don't want to waste our time doing useless computation, so
580 * fall back on the scalar C code for very small filters.
581 * Vectorizing is worth it only if you have a decent-sized vector. */
582 if (minFilterSize < 3)
586 if (HAVE_MMX && cpu_flags & AV_CPU_FLAG_MMX) {
587 // special case for unscaled vertical filtering
588 if (minFilterSize == 1 && filterAlign == 2)
592 av_assert0(minFilterSize > 0);
593 filterSize = (minFilterSize + (filterAlign - 1)) & (~(filterAlign - 1));
594 av_assert0(filterSize > 0);
595 filter = av_malloc_array(dstW, filterSize * sizeof(*filter));
598 if (filterSize >= MAX_FILTER_SIZE * 16 /
599 ((flags & SWS_ACCURATE_RND) ? APCK_SIZE : 16)) {
600 ret = RETCODE_USE_CASCADE;
603 *outFilterSize = filterSize;
605 if (flags & SWS_PRINT_INFO)
606 av_log(NULL, AV_LOG_VERBOSE,
607 "SwScaler: reducing / aligning filtersize %d -> %d\n",
608 filter2Size, filterSize);
609 /* try to reduce the filter-size (step2 reduce it) */
610 for (i = 0; i < dstW; i++) {
613 for (j = 0; j < filterSize; j++) {
614 if (j >= filter2Size)
615 filter[i * filterSize + j] = 0;
617 filter[i * filterSize + j] = filter2[i * filter2Size + j];
618 if ((flags & SWS_BITEXACT) && j >= minFilterSize)
619 filter[i * filterSize + j] = 0;
623 // FIXME try to align filterPos if possible
626 for (i = 0; i < dstW; i++) {
628 if ((*filterPos)[i] < 0) {
629 // move filter coefficients left to compensate for filterPos
630 for (j = 1; j < filterSize; j++) {
631 int left = FFMAX(j + (*filterPos)[i], 0);
632 filter[i * filterSize + left] += filter[i * filterSize + j];
633 filter[i * filterSize + j] = 0;
638 if ((*filterPos)[i] + filterSize > srcW) {
639 int shift = (*filterPos)[i] + FFMIN(filterSize - srcW, 0);
642 for (j = filterSize - 1; j >= 0; j--) {
643 if ((*filterPos)[i] + j >= srcW) {
644 acc += filter[i * filterSize + j];
645 filter[i * filterSize + j] = 0;
648 for (j = filterSize - 1; j >= 0; j--) {
650 filter[i * filterSize + j] = 0;
652 filter[i * filterSize + j] = filter[i * filterSize + j - shift];
656 (*filterPos)[i]-= shift;
657 filter[i * filterSize + srcW - 1 - (*filterPos)[i]] += acc;
659 av_assert0((*filterPos)[i] >= 0);
660 av_assert0((*filterPos)[i] < srcW);
661 if ((*filterPos)[i] + filterSize > srcW) {
662 for (j = 0; j < filterSize; j++) {
663 av_assert0((*filterPos)[i] + j < srcW || !filter[i * filterSize + j]);
668 // Note the +1 is for the MMX scaler which reads over the end
669 /* align at 16 for AltiVec (needed by hScale_altivec_real) */
670 FF_ALLOCZ_ARRAY_OR_GOTO(NULL, *outFilter,
671 (dstW + 3), *outFilterSize * sizeof(int16_t), fail);
673 /* normalize & store in outFilter */
674 for (i = 0; i < dstW; i++) {
679 for (j = 0; j < filterSize; j++) {
680 sum += filter[i * filterSize + j];
682 sum = (sum + one / 2) / one;
684 av_log(NULL, AV_LOG_WARNING, "SwScaler: zero vector in scaling\n");
687 for (j = 0; j < *outFilterSize; j++) {
688 int64_t v = filter[i * filterSize + j] + error;
689 int intV = ROUNDED_DIV(v, sum);
690 (*outFilter)[i * (*outFilterSize) + j] = intV;
691 error = v - intV * sum;
695 (*filterPos)[dstW + 0] =
696 (*filterPos)[dstW + 1] =
697 (*filterPos)[dstW + 2] = (*filterPos)[dstW - 1]; /* the MMX/SSE scaler will
698 * read over the end */
699 for (i = 0; i < *outFilterSize; i++) {
700 int k = (dstW - 1) * (*outFilterSize) + i;
701 (*outFilter)[k + 1 * (*outFilterSize)] =
702 (*outFilter)[k + 2 * (*outFilterSize)] =
703 (*outFilter)[k + 3 * (*outFilterSize)] = (*outFilter)[k];
710 av_log(NULL, ret == RETCODE_USE_CASCADE ? AV_LOG_DEBUG : AV_LOG_ERROR, "sws: initFilter failed\n");
716 static void fill_rgb2yuv_table(SwsContext *c, const int table[4], int dstRange)
718 int64_t W, V, Z, Cy, Cu, Cv;
719 int64_t vr = table[0];
720 int64_t ub = table[1];
721 int64_t ug = -table[2];
722 int64_t vg = -table[3];
725 uint8_t *p = (uint8_t*)c->input_rgb2yuv_table;
727 static const int8_t map[] = {
728 BY_IDX, GY_IDX, -1 , BY_IDX, BY_IDX, GY_IDX, -1 , BY_IDX,
729 RY_IDX, -1 , GY_IDX, RY_IDX, RY_IDX, -1 , GY_IDX, RY_IDX,
730 RY_IDX, GY_IDX, -1 , RY_IDX, RY_IDX, GY_IDX, -1 , RY_IDX,
731 BY_IDX, -1 , GY_IDX, BY_IDX, BY_IDX, -1 , GY_IDX, BY_IDX,
732 BU_IDX, GU_IDX, -1 , BU_IDX, BU_IDX, GU_IDX, -1 , BU_IDX,
733 RU_IDX, -1 , GU_IDX, RU_IDX, RU_IDX, -1 , GU_IDX, RU_IDX,
734 RU_IDX, GU_IDX, -1 , RU_IDX, RU_IDX, GU_IDX, -1 , RU_IDX,
735 BU_IDX, -1 , GU_IDX, BU_IDX, BU_IDX, -1 , GU_IDX, BU_IDX,
736 BV_IDX, GV_IDX, -1 , BV_IDX, BV_IDX, GV_IDX, -1 , BV_IDX,
737 RV_IDX, -1 , GV_IDX, RV_IDX, RV_IDX, -1 , GV_IDX, RV_IDX,
738 RV_IDX, GV_IDX, -1 , RV_IDX, RV_IDX, GV_IDX, -1 , RV_IDX,
739 BV_IDX, -1 , GV_IDX, BV_IDX, BV_IDX, -1 , GV_IDX, BV_IDX,
740 RY_IDX, BY_IDX, RY_IDX, BY_IDX, RY_IDX, BY_IDX, RY_IDX, BY_IDX,
741 BY_IDX, RY_IDX, BY_IDX, RY_IDX, BY_IDX, RY_IDX, BY_IDX, RY_IDX,
742 GY_IDX, -1 , GY_IDX, -1 , GY_IDX, -1 , GY_IDX, -1 ,
743 -1 , GY_IDX, -1 , GY_IDX, -1 , GY_IDX, -1 , GY_IDX,
744 RU_IDX, BU_IDX, RU_IDX, BU_IDX, RU_IDX, BU_IDX, RU_IDX, BU_IDX,
745 BU_IDX, RU_IDX, BU_IDX, RU_IDX, BU_IDX, RU_IDX, BU_IDX, RU_IDX,
746 GU_IDX, -1 , GU_IDX, -1 , GU_IDX, -1 , GU_IDX, -1 ,
747 -1 , GU_IDX, -1 , GU_IDX, -1 , GU_IDX, -1 , GU_IDX,
748 RV_IDX, BV_IDX, RV_IDX, BV_IDX, RV_IDX, BV_IDX, RV_IDX, BV_IDX,
749 BV_IDX, RV_IDX, BV_IDX, RV_IDX, BV_IDX, RV_IDX, BV_IDX, RV_IDX,
750 GV_IDX, -1 , GV_IDX, -1 , GV_IDX, -1 , GV_IDX, -1 ,
751 -1 , GV_IDX, -1 , GV_IDX, -1 , GV_IDX, -1 , GV_IDX, //23
752 -1 , -1 , -1 , -1 , -1 , -1 , -1 , -1 , //24
753 -1 , -1 , -1 , -1 , -1 , -1 , -1 , -1 , //25
754 -1 , -1 , -1 , -1 , -1 , -1 , -1 , -1 , //26
755 -1 , -1 , -1 , -1 , -1 , -1 , -1 , -1 , //27
756 -1 , -1 , -1 , -1 , -1 , -1 , -1 , -1 , //28
757 -1 , -1 , -1 , -1 , -1 , -1 , -1 , -1 , //29
758 -1 , -1 , -1 , -1 , -1 , -1 , -1 , -1 , //30
759 -1 , -1 , -1 , -1 , -1 , -1 , -1 , -1 , //31
760 BY_IDX, GY_IDX, RY_IDX, -1 , -1 , -1 , -1 , -1 , //32
761 BU_IDX, GU_IDX, RU_IDX, -1 , -1 , -1 , -1 , -1 , //33
762 BV_IDX, GV_IDX, RV_IDX, -1 , -1 , -1 , -1 , -1 , //34
765 dstRange = 0; //FIXME range = 1 is handled elsewhere
775 W = ROUNDED_DIV(ONE*ONE*ug, ub);
776 V = ROUNDED_DIV(ONE*ONE*vg, vr);
779 Cy = ROUNDED_DIV(cy*Z, ONE);
780 Cu = ROUNDED_DIV(ub*Z, ONE);
781 Cv = ROUNDED_DIV(vr*Z, ONE);
783 c->input_rgb2yuv_table[RY_IDX] = -ROUNDED_DIV((1 << RGB2YUV_SHIFT)*V , Cy);
784 c->input_rgb2yuv_table[GY_IDX] = ROUNDED_DIV((1 << RGB2YUV_SHIFT)*ONE*ONE , Cy);
785 c->input_rgb2yuv_table[BY_IDX] = -ROUNDED_DIV((1 << RGB2YUV_SHIFT)*W , Cy);
787 c->input_rgb2yuv_table[RU_IDX] = ROUNDED_DIV((1 << RGB2YUV_SHIFT)*V , Cu);
788 c->input_rgb2yuv_table[GU_IDX] = -ROUNDED_DIV((1 << RGB2YUV_SHIFT)*ONE*ONE , Cu);
789 c->input_rgb2yuv_table[BU_IDX] = ROUNDED_DIV((1 << RGB2YUV_SHIFT)*(Z+W) , Cu);
791 c->input_rgb2yuv_table[RV_IDX] = ROUNDED_DIV((1 << RGB2YUV_SHIFT)*(V+Z) , Cv);
792 c->input_rgb2yuv_table[GV_IDX] = -ROUNDED_DIV((1 << RGB2YUV_SHIFT)*ONE*ONE , Cv);
793 c->input_rgb2yuv_table[BV_IDX] = ROUNDED_DIV((1 << RGB2YUV_SHIFT)*W , Cv);
795 if(/*!dstRange && */!memcmp(table, ff_yuv2rgb_coeffs[SWS_CS_DEFAULT], sizeof(ff_yuv2rgb_coeffs[SWS_CS_DEFAULT]))) {
796 c->input_rgb2yuv_table[BY_IDX] = ((int)(0.114 * 219 / 255 * (1 << RGB2YUV_SHIFT) + 0.5));
797 c->input_rgb2yuv_table[BV_IDX] = (-(int)(0.081 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5));
798 c->input_rgb2yuv_table[BU_IDX] = ((int)(0.500 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5));
799 c->input_rgb2yuv_table[GY_IDX] = ((int)(0.587 * 219 / 255 * (1 << RGB2YUV_SHIFT) + 0.5));
800 c->input_rgb2yuv_table[GV_IDX] = (-(int)(0.419 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5));
801 c->input_rgb2yuv_table[GU_IDX] = (-(int)(0.331 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5));
802 c->input_rgb2yuv_table[RY_IDX] = ((int)(0.299 * 219 / 255 * (1 << RGB2YUV_SHIFT) + 0.5));
803 c->input_rgb2yuv_table[RV_IDX] = ((int)(0.500 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5));
804 c->input_rgb2yuv_table[RU_IDX] = (-(int)(0.169 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5));
806 for(i=0; i<FF_ARRAY_ELEMS(map); i++)
807 AV_WL16(p + 16*4 + 2*i, map[i] >= 0 ? c->input_rgb2yuv_table[map[i]] : 0);
810 static void fill_xyztables(struct SwsContext *c)
813 double xyzgamma = XYZ_GAMMA;
814 double rgbgamma = 1.0 / RGB_GAMMA;
815 double xyzgammainv = 1.0 / XYZ_GAMMA;
816 double rgbgammainv = RGB_GAMMA;
817 static const int16_t xyz2rgb_matrix[3][4] = {
818 {13270, -6295, -2041},
820 { 228, -835, 4329} };
821 static const int16_t rgb2xyz_matrix[3][4] = {
825 static int16_t xyzgamma_tab[4096], rgbgamma_tab[4096], xyzgammainv_tab[4096], rgbgammainv_tab[4096];
827 memcpy(c->xyz2rgb_matrix, xyz2rgb_matrix, sizeof(c->xyz2rgb_matrix));
828 memcpy(c->rgb2xyz_matrix, rgb2xyz_matrix, sizeof(c->rgb2xyz_matrix));
829 c->xyzgamma = xyzgamma_tab;
830 c->rgbgamma = rgbgamma_tab;
831 c->xyzgammainv = xyzgammainv_tab;
832 c->rgbgammainv = rgbgammainv_tab;
834 if (rgbgamma_tab[4095])
837 /* set gamma vectors */
838 for (i = 0; i < 4096; i++) {
839 xyzgamma_tab[i] = lrint(pow(i / 4095.0, xyzgamma) * 4095.0);
840 rgbgamma_tab[i] = lrint(pow(i / 4095.0, rgbgamma) * 4095.0);
841 xyzgammainv_tab[i] = lrint(pow(i / 4095.0, xyzgammainv) * 4095.0);
842 rgbgammainv_tab[i] = lrint(pow(i / 4095.0, rgbgammainv) * 4095.0);
846 int sws_setColorspaceDetails(struct SwsContext *c, const int inv_table[4],
847 int srcRange, const int table[4], int dstRange,
848 int brightness, int contrast, int saturation)
850 const AVPixFmtDescriptor *desc_dst;
851 const AVPixFmtDescriptor *desc_src;
855 desc_dst = av_pix_fmt_desc_get(c->dstFormat);
856 desc_src = av_pix_fmt_desc_get(c->srcFormat);
858 if(!isYUV(c->dstFormat) && !isGray(c->dstFormat))
860 if(!isYUV(c->srcFormat) && !isGray(c->srcFormat))
863 if (c->srcRange != srcRange ||
864 c->dstRange != dstRange ||
865 c->brightness != brightness ||
866 c->contrast != contrast ||
867 c->saturation != saturation ||
868 memcmp(c->srcColorspaceTable, inv_table, sizeof(int) * 4) ||
869 memcmp(c->dstColorspaceTable, table, sizeof(int) * 4)
873 memmove(c->srcColorspaceTable, inv_table, sizeof(int) * 4);
874 memmove(c->dstColorspaceTable, table, sizeof(int) * 4);
878 c->brightness = brightness;
879 c->contrast = contrast;
880 c->saturation = saturation;
881 c->srcRange = srcRange;
882 c->dstRange = dstRange;
884 //The srcBpc check is possibly wrong but we seem to lack a definitive reference to test this
885 //and what we have in ticket 2939 looks better with this check
886 if (need_reinit && (c->srcBpc == 8 || !isYUV(c->srcFormat)))
887 ff_sws_init_range_convert(c);
889 c->dstFormatBpp = av_get_bits_per_pixel(desc_dst);
890 c->srcFormatBpp = av_get_bits_per_pixel(desc_src);
892 if (c->cascaded_context[c->cascaded_mainindex])
893 return sws_setColorspaceDetails(c->cascaded_context[c->cascaded_mainindex],inv_table, srcRange,table, dstRange, brightness, contrast, saturation);
898 if ((isYUV(c->dstFormat) || isGray(c->dstFormat)) && (isYUV(c->srcFormat) || isGray(c->srcFormat))) {
899 if (!c->cascaded_context[0] &&
900 memcmp(c->dstColorspaceTable, c->srcColorspaceTable, sizeof(int) * 4) &&
901 c->srcW && c->srcH && c->dstW && c->dstH) {
902 enum AVPixelFormat tmp_format;
903 int tmp_width, tmp_height;
909 av_log(c, AV_LOG_VERBOSE, "YUV color matrix differs for YUV->YUV, using intermediate RGB to convert\n");
911 if (isNBPS(c->dstFormat) || is16BPS(c->dstFormat)) {
912 if (isALPHA(c->srcFormat) && isALPHA(c->dstFormat)) {
913 tmp_format = AV_PIX_FMT_BGRA64;
915 tmp_format = AV_PIX_FMT_BGR48;
918 if (isALPHA(c->srcFormat) && isALPHA(c->dstFormat)) {
919 tmp_format = AV_PIX_FMT_BGRA;
921 tmp_format = AV_PIX_FMT_BGR24;
925 if (srcW*srcH > dstW*dstH) {
933 ret = av_image_alloc(c->cascaded_tmp, c->cascaded_tmpStride,
934 tmp_width, tmp_height, tmp_format, 64);
938 c->cascaded_context[0] = sws_alloc_set_opts(srcW, srcH, c->srcFormat,
939 tmp_width, tmp_height, tmp_format,
941 if (!c->cascaded_context[0])
944 c->cascaded_context[0]->alphablend = c->alphablend;
945 ret = sws_init_context(c->cascaded_context[0], NULL , NULL);
948 //we set both src and dst depending on that the RGB side will be ignored
949 sws_setColorspaceDetails(c->cascaded_context[0], inv_table,
950 srcRange, table, dstRange,
951 brightness, contrast, saturation);
953 c->cascaded_context[1] = sws_getContext(tmp_width, tmp_height, tmp_format,
954 dstW, dstH, c->dstFormat,
955 c->flags, NULL, NULL, c->param);
956 if (!c->cascaded_context[1])
958 sws_setColorspaceDetails(c->cascaded_context[1], inv_table,
959 srcRange, table, dstRange,
960 0, 1 << 16, 1 << 16);
966 if (!isYUV(c->dstFormat) && !isGray(c->dstFormat)) {
967 ff_yuv2rgb_c_init_tables(c, inv_table, srcRange, brightness,
968 contrast, saturation);
972 ff_yuv2rgb_init_tables_ppc(c, inv_table, brightness,
973 contrast, saturation);
976 fill_rgb2yuv_table(c, table, dstRange);
981 int sws_getColorspaceDetails(struct SwsContext *c, int **inv_table,
982 int *srcRange, int **table, int *dstRange,
983 int *brightness, int *contrast, int *saturation)
988 *inv_table = c->srcColorspaceTable;
989 *table = c->dstColorspaceTable;
990 *srcRange = c->srcRange;
991 *dstRange = c->dstRange;
992 *brightness = c->brightness;
993 *contrast = c->contrast;
994 *saturation = c->saturation;
999 static int handle_jpeg(enum AVPixelFormat *format)
1002 case AV_PIX_FMT_YUVJ420P:
1003 *format = AV_PIX_FMT_YUV420P;
1005 case AV_PIX_FMT_YUVJ411P:
1006 *format = AV_PIX_FMT_YUV411P;
1008 case AV_PIX_FMT_YUVJ422P:
1009 *format = AV_PIX_FMT_YUV422P;
1011 case AV_PIX_FMT_YUVJ444P:
1012 *format = AV_PIX_FMT_YUV444P;
1014 case AV_PIX_FMT_YUVJ440P:
1015 *format = AV_PIX_FMT_YUV440P;
1017 case AV_PIX_FMT_GRAY8:
1018 case AV_PIX_FMT_YA8:
1019 case AV_PIX_FMT_GRAY16LE:
1020 case AV_PIX_FMT_GRAY16BE:
1021 case AV_PIX_FMT_YA16BE:
1022 case AV_PIX_FMT_YA16LE:
1029 static int handle_0alpha(enum AVPixelFormat *format)
1032 case AV_PIX_FMT_0BGR : *format = AV_PIX_FMT_ABGR ; return 1;
1033 case AV_PIX_FMT_BGR0 : *format = AV_PIX_FMT_BGRA ; return 4;
1034 case AV_PIX_FMT_0RGB : *format = AV_PIX_FMT_ARGB ; return 1;
1035 case AV_PIX_FMT_RGB0 : *format = AV_PIX_FMT_RGBA ; return 4;
1040 static int handle_xyz(enum AVPixelFormat *format)
1043 case AV_PIX_FMT_XYZ12BE : *format = AV_PIX_FMT_RGB48BE; return 1;
1044 case AV_PIX_FMT_XYZ12LE : *format = AV_PIX_FMT_RGB48LE; return 1;
1049 static void handle_formats(SwsContext *c)
1051 c->src0Alpha |= handle_0alpha(&c->srcFormat);
1052 c->dst0Alpha |= handle_0alpha(&c->dstFormat);
1053 c->srcXYZ |= handle_xyz(&c->srcFormat);
1054 c->dstXYZ |= handle_xyz(&c->dstFormat);
1055 if (c->srcXYZ || c->dstXYZ)
1059 SwsContext *sws_alloc_context(void)
1061 SwsContext *c = av_mallocz(sizeof(SwsContext));
1063 av_assert0(offsetof(SwsContext, redDither) + DITHER32_INT == offsetof(SwsContext, dither32));
1066 c->av_class = &ff_sws_context_class;
1067 av_opt_set_defaults(c);
1073 static uint16_t * alloc_gamma_tbl(double e)
1077 tbl = (uint16_t*)av_malloc(sizeof(uint16_t) * 1 << 16);
1081 for (i = 0; i < 65536; ++i) {
1082 tbl[i] = pow(i / 65535.0, e) * 65535.0;
1087 static enum AVPixelFormat alphaless_fmt(enum AVPixelFormat fmt)
1090 case AV_PIX_FMT_ARGB: return AV_PIX_FMT_RGB24;
1091 case AV_PIX_FMT_RGBA: return AV_PIX_FMT_RGB24;
1092 case AV_PIX_FMT_ABGR: return AV_PIX_FMT_BGR24;
1093 case AV_PIX_FMT_BGRA: return AV_PIX_FMT_BGR24;
1094 case AV_PIX_FMT_YA8: return AV_PIX_FMT_GRAY8;
1096 case AV_PIX_FMT_YUVA420P: return AV_PIX_FMT_YUV420P;
1097 case AV_PIX_FMT_YUVA422P: return AV_PIX_FMT_YUV422P;
1098 case AV_PIX_FMT_YUVA444P: return AV_PIX_FMT_YUV444P;
1100 case AV_PIX_FMT_GBRAP: return AV_PIX_FMT_GBRP;
1102 case AV_PIX_FMT_GBRAP12LE: return AV_PIX_FMT_GBRP12;
1103 case AV_PIX_FMT_GBRAP12BE: return AV_PIX_FMT_GBRP12;
1105 case AV_PIX_FMT_GBRAP16LE: return AV_PIX_FMT_GBRP16;
1106 case AV_PIX_FMT_GBRAP16BE: return AV_PIX_FMT_GBRP16;
1108 case AV_PIX_FMT_RGBA64LE: return AV_PIX_FMT_RGB48;
1109 case AV_PIX_FMT_RGBA64BE: return AV_PIX_FMT_RGB48;
1110 case AV_PIX_FMT_BGRA64LE: return AV_PIX_FMT_BGR48;
1111 case AV_PIX_FMT_BGRA64BE: return AV_PIX_FMT_BGR48;
1113 case AV_PIX_FMT_YA16BE: return AV_PIX_FMT_GRAY16;
1114 case AV_PIX_FMT_YA16LE: return AV_PIX_FMT_GRAY16;
1116 case AV_PIX_FMT_YUVA420P9BE: return AV_PIX_FMT_YUV420P9;
1117 case AV_PIX_FMT_YUVA422P9BE: return AV_PIX_FMT_YUV422P9;
1118 case AV_PIX_FMT_YUVA444P9BE: return AV_PIX_FMT_YUV444P9;
1119 case AV_PIX_FMT_YUVA420P9LE: return AV_PIX_FMT_YUV420P9;
1120 case AV_PIX_FMT_YUVA422P9LE: return AV_PIX_FMT_YUV422P9;
1121 case AV_PIX_FMT_YUVA444P9LE: return AV_PIX_FMT_YUV444P9;
1122 case AV_PIX_FMT_YUVA420P10BE: return AV_PIX_FMT_YUV420P10;
1123 case AV_PIX_FMT_YUVA422P10BE: return AV_PIX_FMT_YUV422P10;
1124 case AV_PIX_FMT_YUVA444P10BE: return AV_PIX_FMT_YUV444P10;
1125 case AV_PIX_FMT_YUVA420P10LE: return AV_PIX_FMT_YUV420P10;
1126 case AV_PIX_FMT_YUVA422P10LE: return AV_PIX_FMT_YUV422P10;
1127 case AV_PIX_FMT_YUVA444P10LE: return AV_PIX_FMT_YUV444P10;
1128 case AV_PIX_FMT_YUVA420P16BE: return AV_PIX_FMT_YUV420P16;
1129 case AV_PIX_FMT_YUVA422P16BE: return AV_PIX_FMT_YUV422P16;
1130 case AV_PIX_FMT_YUVA444P16BE: return AV_PIX_FMT_YUV444P16;
1131 case AV_PIX_FMT_YUVA420P16LE: return AV_PIX_FMT_YUV420P16;
1132 case AV_PIX_FMT_YUVA422P16LE: return AV_PIX_FMT_YUV422P16;
1133 case AV_PIX_FMT_YUVA444P16LE: return AV_PIX_FMT_YUV444P16;
1135 // case AV_PIX_FMT_AYUV64LE:
1136 // case AV_PIX_FMT_AYUV64BE:
1137 // case AV_PIX_FMT_PAL8:
1138 default: return AV_PIX_FMT_NONE;
1142 av_cold int sws_init_context(SwsContext *c, SwsFilter *srcFilter,
1143 SwsFilter *dstFilter)
1146 int usesVFilter, usesHFilter;
1148 SwsFilter dummyFilter = { NULL, NULL, NULL, NULL };
1153 int dst_stride = FFALIGN(dstW * sizeof(int16_t) + 66, 16);
1154 int flags, cpu_flags;
1155 enum AVPixelFormat srcFormat = c->srcFormat;
1156 enum AVPixelFormat dstFormat = c->dstFormat;
1157 const AVPixFmtDescriptor *desc_src;
1158 const AVPixFmtDescriptor *desc_dst;
1160 enum AVPixelFormat tmpFmt;
1162 cpu_flags = av_get_cpu_flags();
1166 ff_sws_rgb2rgb_init();
1168 unscaled = (srcW == dstW && srcH == dstH);
1170 c->srcRange |= handle_jpeg(&c->srcFormat);
1171 c->dstRange |= handle_jpeg(&c->dstFormat);
1173 if(srcFormat!=c->srcFormat || dstFormat!=c->dstFormat)
1174 av_log(c, AV_LOG_WARNING, "deprecated pixel format used, make sure you did set range correctly\n");
1176 if (!c->contrast && !c->saturation && !c->dstFormatBpp)
1177 sws_setColorspaceDetails(c, ff_yuv2rgb_coeffs[SWS_CS_DEFAULT], c->srcRange,
1178 ff_yuv2rgb_coeffs[SWS_CS_DEFAULT],
1179 c->dstRange, 0, 1 << 16, 1 << 16);
1182 srcFormat = c->srcFormat;
1183 dstFormat = c->dstFormat;
1184 desc_src = av_pix_fmt_desc_get(srcFormat);
1185 desc_dst = av_pix_fmt_desc_get(dstFormat);
1187 // If the source has no alpha then disable alpha blendaway
1189 c->alphablend = SWS_ALPHA_BLEND_NONE;
1191 if (!(unscaled && sws_isSupportedEndiannessConversion(srcFormat) &&
1192 av_pix_fmt_swap_endianness(srcFormat) == dstFormat)) {
1193 if (!sws_isSupportedInput(srcFormat)) {
1194 av_log(c, AV_LOG_ERROR, "%s is not supported as input pixel format\n",
1195 av_get_pix_fmt_name(srcFormat));
1196 return AVERROR(EINVAL);
1198 if (!sws_isSupportedOutput(dstFormat)) {
1199 av_log(c, AV_LOG_ERROR, "%s is not supported as output pixel format\n",
1200 av_get_pix_fmt_name(dstFormat));
1201 return AVERROR(EINVAL);
1204 av_assert2(desc_src && desc_dst);
1206 i = flags & (SWS_POINT |
1218 /* provide a default scaler if not set by caller */
1220 if (dstW < srcW && dstH < srcH)
1221 flags |= SWS_BICUBIC;
1222 else if (dstW > srcW && dstH > srcH)
1223 flags |= SWS_BICUBIC;
1225 flags |= SWS_BICUBIC;
1227 } else if (i & (i - 1)) {
1228 av_log(c, AV_LOG_ERROR,
1229 "Exactly one scaler algorithm must be chosen, got %X\n", i);
1230 return AVERROR(EINVAL);
1233 if (srcW < 1 || srcH < 1 || dstW < 1 || dstH < 1) {
1234 /* FIXME check if these are enough and try to lower them after
1235 * fixing the relevant parts of the code */
1236 av_log(c, AV_LOG_ERROR, "%dx%d -> %dx%d is invalid scaling dimension\n",
1237 srcW, srcH, dstW, dstH);
1238 return AVERROR(EINVAL);
1240 if (flags & SWS_FAST_BILINEAR) {
1241 if (srcW < 8 || dstW < 8) {
1242 flags ^= SWS_FAST_BILINEAR | SWS_BILINEAR;
1248 dstFilter = &dummyFilter;
1250 srcFilter = &dummyFilter;
1252 c->lumXInc = (((int64_t)srcW << 16) + (dstW >> 1)) / dstW;
1253 c->lumYInc = (((int64_t)srcH << 16) + (dstH >> 1)) / dstH;
1254 c->dstFormatBpp = av_get_bits_per_pixel(desc_dst);
1255 c->srcFormatBpp = av_get_bits_per_pixel(desc_src);
1256 c->vRounder = 4 * 0x0001000100010001ULL;
1258 usesVFilter = (srcFilter->lumV && srcFilter->lumV->length > 1) ||
1259 (srcFilter->chrV && srcFilter->chrV->length > 1) ||
1260 (dstFilter->lumV && dstFilter->lumV->length > 1) ||
1261 (dstFilter->chrV && dstFilter->chrV->length > 1);
1262 usesHFilter = (srcFilter->lumH && srcFilter->lumH->length > 1) ||
1263 (srcFilter->chrH && srcFilter->chrH->length > 1) ||
1264 (dstFilter->lumH && dstFilter->lumH->length > 1) ||
1265 (dstFilter->chrH && dstFilter->chrH->length > 1);
1267 av_pix_fmt_get_chroma_sub_sample(srcFormat, &c->chrSrcHSubSample, &c->chrSrcVSubSample);
1268 av_pix_fmt_get_chroma_sub_sample(dstFormat, &c->chrDstHSubSample, &c->chrDstVSubSample);
1270 if (isAnyRGB(dstFormat) && !(flags&SWS_FULL_CHR_H_INT)) {
1272 av_log(c, AV_LOG_DEBUG, "Forcing full internal H chroma due to odd output size\n");
1273 flags |= SWS_FULL_CHR_H_INT;
1277 if ( c->chrSrcHSubSample == 0
1278 && c->chrSrcVSubSample == 0
1279 && c->dither != SWS_DITHER_BAYER //SWS_FULL_CHR_H_INT is currently not supported with SWS_DITHER_BAYER
1280 && !(c->flags & SWS_FAST_BILINEAR)
1282 av_log(c, AV_LOG_DEBUG, "Forcing full internal H chroma due to input having non subsampled chroma\n");
1283 flags |= SWS_FULL_CHR_H_INT;
1288 if (c->dither == SWS_DITHER_AUTO) {
1289 if (flags & SWS_ERROR_DIFFUSION)
1290 c->dither = SWS_DITHER_ED;
1293 if(dstFormat == AV_PIX_FMT_BGR4_BYTE ||
1294 dstFormat == AV_PIX_FMT_RGB4_BYTE ||
1295 dstFormat == AV_PIX_FMT_BGR8 ||
1296 dstFormat == AV_PIX_FMT_RGB8) {
1297 if (c->dither == SWS_DITHER_AUTO)
1298 c->dither = (flags & SWS_FULL_CHR_H_INT) ? SWS_DITHER_ED : SWS_DITHER_BAYER;
1299 if (!(flags & SWS_FULL_CHR_H_INT)) {
1300 if (c->dither == SWS_DITHER_ED || c->dither == SWS_DITHER_A_DITHER || c->dither == SWS_DITHER_X_DITHER) {
1301 av_log(c, AV_LOG_DEBUG,
1302 "Desired dithering only supported in full chroma interpolation for destination format '%s'\n",
1303 av_get_pix_fmt_name(dstFormat));
1304 flags |= SWS_FULL_CHR_H_INT;
1308 if (flags & SWS_FULL_CHR_H_INT) {
1309 if (c->dither == SWS_DITHER_BAYER) {
1310 av_log(c, AV_LOG_DEBUG,
1311 "Ordered dither is not supported in full chroma interpolation for destination format '%s'\n",
1312 av_get_pix_fmt_name(dstFormat));
1313 c->dither = SWS_DITHER_ED;
1317 if (isPlanarRGB(dstFormat)) {
1318 if (!(flags & SWS_FULL_CHR_H_INT)) {
1319 av_log(c, AV_LOG_DEBUG,
1320 "%s output is not supported with half chroma resolution, switching to full\n",
1321 av_get_pix_fmt_name(dstFormat));
1322 flags |= SWS_FULL_CHR_H_INT;
1327 /* reuse chroma for 2 pixels RGB/BGR unless user wants full
1328 * chroma interpolation */
1329 if (flags & SWS_FULL_CHR_H_INT &&
1330 isAnyRGB(dstFormat) &&
1331 !isPlanarRGB(dstFormat) &&
1332 dstFormat != AV_PIX_FMT_RGBA64LE &&
1333 dstFormat != AV_PIX_FMT_RGBA64BE &&
1334 dstFormat != AV_PIX_FMT_BGRA64LE &&
1335 dstFormat != AV_PIX_FMT_BGRA64BE &&
1336 dstFormat != AV_PIX_FMT_RGB48LE &&
1337 dstFormat != AV_PIX_FMT_RGB48BE &&
1338 dstFormat != AV_PIX_FMT_BGR48LE &&
1339 dstFormat != AV_PIX_FMT_BGR48BE &&
1340 dstFormat != AV_PIX_FMT_RGBA &&
1341 dstFormat != AV_PIX_FMT_ARGB &&
1342 dstFormat != AV_PIX_FMT_BGRA &&
1343 dstFormat != AV_PIX_FMT_ABGR &&
1344 dstFormat != AV_PIX_FMT_RGB24 &&
1345 dstFormat != AV_PIX_FMT_BGR24 &&
1346 dstFormat != AV_PIX_FMT_BGR4_BYTE &&
1347 dstFormat != AV_PIX_FMT_RGB4_BYTE &&
1348 dstFormat != AV_PIX_FMT_BGR8 &&
1349 dstFormat != AV_PIX_FMT_RGB8
1351 av_log(c, AV_LOG_WARNING,
1352 "full chroma interpolation for destination format '%s' not yet implemented\n",
1353 av_get_pix_fmt_name(dstFormat));
1354 flags &= ~SWS_FULL_CHR_H_INT;
1357 if (isAnyRGB(dstFormat) && !(flags & SWS_FULL_CHR_H_INT))
1358 c->chrDstHSubSample = 1;
1360 // drop some chroma lines if the user wants it
1361 c->vChrDrop = (flags & SWS_SRC_V_CHR_DROP_MASK) >>
1362 SWS_SRC_V_CHR_DROP_SHIFT;
1363 c->chrSrcVSubSample += c->vChrDrop;
1365 /* drop every other pixel for chroma calculation unless user
1366 * wants full chroma */
1367 if (isAnyRGB(srcFormat) && !(flags & SWS_FULL_CHR_H_INP) &&
1368 srcFormat != AV_PIX_FMT_RGB8 && srcFormat != AV_PIX_FMT_BGR8 &&
1369 srcFormat != AV_PIX_FMT_RGB4 && srcFormat != AV_PIX_FMT_BGR4 &&
1370 srcFormat != AV_PIX_FMT_RGB4_BYTE && srcFormat != AV_PIX_FMT_BGR4_BYTE &&
1371 srcFormat != AV_PIX_FMT_GBRP9BE && srcFormat != AV_PIX_FMT_GBRP9LE &&
1372 srcFormat != AV_PIX_FMT_GBRP10BE && srcFormat != AV_PIX_FMT_GBRP10LE &&
1373 srcFormat != AV_PIX_FMT_GBRP12BE && srcFormat != AV_PIX_FMT_GBRP12LE &&
1374 srcFormat != AV_PIX_FMT_GBRAP12BE && srcFormat != AV_PIX_FMT_GBRAP12LE &&
1375 srcFormat != AV_PIX_FMT_GBRP14BE && srcFormat != AV_PIX_FMT_GBRP14LE &&
1376 srcFormat != AV_PIX_FMT_GBRP16BE && srcFormat != AV_PIX_FMT_GBRP16LE &&
1377 srcFormat != AV_PIX_FMT_GBRAP16BE && srcFormat != AV_PIX_FMT_GBRAP16LE &&
1378 ((dstW >> c->chrDstHSubSample) <= (srcW >> 1) ||
1379 (flags & SWS_FAST_BILINEAR)))
1380 c->chrSrcHSubSample = 1;
1382 // Note the AV_CEIL_RSHIFT is so that we always round toward +inf.
1383 c->chrSrcW = AV_CEIL_RSHIFT(srcW, c->chrSrcHSubSample);
1384 c->chrSrcH = AV_CEIL_RSHIFT(srcH, c->chrSrcVSubSample);
1385 c->chrDstW = AV_CEIL_RSHIFT(dstW, c->chrDstHSubSample);
1386 c->chrDstH = AV_CEIL_RSHIFT(dstH, c->chrDstVSubSample);
1388 FF_ALLOCZ_OR_GOTO(c, c->formatConvBuffer, FFALIGN(srcW*2+78, 16) * 2, fail);
1390 c->srcBpc = desc_src->comp[0].depth;
1393 c->dstBpc = desc_dst->comp[0].depth;
1396 if (isAnyRGB(srcFormat) || srcFormat == AV_PIX_FMT_PAL8)
1398 if (c->dstBpc == 16)
1401 if (INLINE_MMXEXT(cpu_flags) && c->srcBpc == 8 && c->dstBpc <= 14) {
1402 c->canMMXEXTBeUsed = dstW >= srcW && (dstW & 31) == 0 &&
1403 c->chrDstW >= c->chrSrcW &&
1405 if (!c->canMMXEXTBeUsed && dstW >= srcW && c->chrDstW >= c->chrSrcW && (srcW & 15) == 0
1407 && (flags & SWS_FAST_BILINEAR)) {
1408 if (flags & SWS_PRINT_INFO)
1409 av_log(c, AV_LOG_INFO,
1410 "output width is not a multiple of 32 -> no MMXEXT scaler\n");
1412 if (usesHFilter || isNBPS(c->srcFormat) || is16BPS(c->srcFormat) || isAnyRGB(c->srcFormat))
1413 c->canMMXEXTBeUsed = 0;
1415 c->canMMXEXTBeUsed = 0;
1417 c->chrXInc = (((int64_t)c->chrSrcW << 16) + (c->chrDstW >> 1)) / c->chrDstW;
1418 c->chrYInc = (((int64_t)c->chrSrcH << 16) + (c->chrDstH >> 1)) / c->chrDstH;
1420 /* Match pixel 0 of the src to pixel 0 of dst and match pixel n-2 of src
1421 * to pixel n-2 of dst, but only for the FAST_BILINEAR mode otherwise do
1423 * n-2 is the last chrominance sample available.
1424 * This is not perfect, but no one should notice the difference, the more
1425 * correct variant would be like the vertical one, but that would require
1426 * some special code for the first and last pixel */
1427 if (flags & SWS_FAST_BILINEAR) {
1428 if (c->canMMXEXTBeUsed) {
1432 // we don't use the x86 asm scaler if MMX is available
1433 else if (INLINE_MMX(cpu_flags) && c->dstBpc <= 14) {
1434 c->lumXInc = ((int64_t)(srcW - 2) << 16) / (dstW - 2) - 20;
1435 c->chrXInc = ((int64_t)(c->chrSrcW - 2) << 16) / (c->chrDstW - 2) - 20;
1439 // hardcoded for now
1440 c->gamma_value = 2.2;
1441 tmpFmt = AV_PIX_FMT_RGBA64LE;
1444 if (!unscaled && c->gamma_flag && (srcFormat != tmpFmt || dstFormat != tmpFmt)) {
1446 c->cascaded_context[0] = NULL;
1448 ret = av_image_alloc(c->cascaded_tmp, c->cascaded_tmpStride,
1449 srcW, srcH, tmpFmt, 64);
1453 c->cascaded_context[0] = sws_getContext(srcW, srcH, srcFormat,
1455 flags, NULL, NULL, c->param);
1456 if (!c->cascaded_context[0]) {
1460 c->cascaded_context[1] = sws_getContext(srcW, srcH, tmpFmt,
1462 flags, srcFilter, dstFilter, c->param);
1464 if (!c->cascaded_context[1])
1467 c2 = c->cascaded_context[1];
1468 c2->is_internal_gamma = 1;
1469 c2->gamma = alloc_gamma_tbl( c->gamma_value);
1470 c2->inv_gamma = alloc_gamma_tbl(1.f/c->gamma_value);
1471 if (!c2->gamma || !c2->inv_gamma)
1472 return AVERROR(ENOMEM);
1474 // is_internal_flag is set after creating the context
1475 // to properly create the gamma convert FilterDescriptor
1476 // we have to re-initialize it
1477 ff_free_filters(c2);
1478 if (ff_init_filters(c2) < 0) {
1479 sws_freeContext(c2);
1483 c->cascaded_context[2] = NULL;
1484 if (dstFormat != tmpFmt) {
1485 ret = av_image_alloc(c->cascaded1_tmp, c->cascaded1_tmpStride,
1486 dstW, dstH, tmpFmt, 64);
1490 c->cascaded_context[2] = sws_getContext(dstW, dstH, tmpFmt,
1491 dstW, dstH, dstFormat,
1492 flags, NULL, NULL, c->param);
1493 if (!c->cascaded_context[2])
1499 if (isBayer(srcFormat)) {
1501 (dstFormat != AV_PIX_FMT_RGB24 && dstFormat != AV_PIX_FMT_YUV420P)) {
1502 enum AVPixelFormat tmpFormat = AV_PIX_FMT_RGB24;
1504 ret = av_image_alloc(c->cascaded_tmp, c->cascaded_tmpStride,
1505 srcW, srcH, tmpFormat, 64);
1509 c->cascaded_context[0] = sws_getContext(srcW, srcH, srcFormat,
1510 srcW, srcH, tmpFormat,
1511 flags, srcFilter, NULL, c->param);
1512 if (!c->cascaded_context[0])
1515 c->cascaded_context[1] = sws_getContext(srcW, srcH, tmpFormat,
1516 dstW, dstH, dstFormat,
1517 flags, NULL, dstFilter, c->param);
1518 if (!c->cascaded_context[1])
1524 if (CONFIG_SWSCALE_ALPHA && isALPHA(srcFormat) && !isALPHA(dstFormat)) {
1525 enum AVPixelFormat tmpFormat = alphaless_fmt(srcFormat);
1527 if (tmpFormat != AV_PIX_FMT_NONE && c->alphablend != SWS_ALPHA_BLEND_NONE)
1529 dstFormat != tmpFormat ||
1530 usesHFilter || usesVFilter ||
1531 c->srcRange != c->dstRange
1533 c->cascaded_mainindex = 1;
1534 ret = av_image_alloc(c->cascaded_tmp, c->cascaded_tmpStride,
1535 srcW, srcH, tmpFormat, 64);
1539 c->cascaded_context[0] = sws_alloc_set_opts(srcW, srcH, srcFormat,
1540 srcW, srcH, tmpFormat,
1542 if (!c->cascaded_context[0])
1544 c->cascaded_context[0]->alphablend = c->alphablend;
1545 ret = sws_init_context(c->cascaded_context[0], NULL , NULL);
1549 c->cascaded_context[1] = sws_alloc_set_opts(srcW, srcH, tmpFormat,
1550 dstW, dstH, dstFormat,
1552 if (!c->cascaded_context[1])
1555 c->cascaded_context[1]->srcRange = c->srcRange;
1556 c->cascaded_context[1]->dstRange = c->dstRange;
1557 ret = sws_init_context(c->cascaded_context[1], srcFilter , dstFilter);
1565 #define USE_MMAP (HAVE_MMAP && HAVE_MPROTECT && defined MAP_ANONYMOUS)
1567 /* precalculate horizontal scaler filter coefficients */
1569 #if HAVE_MMXEXT_INLINE
1570 // can't downscale !!!
1571 if (c->canMMXEXTBeUsed && (flags & SWS_FAST_BILINEAR)) {
1572 c->lumMmxextFilterCodeSize = ff_init_hscaler_mmxext(dstW, c->lumXInc, NULL,
1574 c->chrMmxextFilterCodeSize = ff_init_hscaler_mmxext(c->chrDstW, c->chrXInc,
1575 NULL, NULL, NULL, 4);
1578 c->lumMmxextFilterCode = mmap(NULL, c->lumMmxextFilterCodeSize,
1579 PROT_READ | PROT_WRITE,
1580 MAP_PRIVATE | MAP_ANONYMOUS,
1582 c->chrMmxextFilterCode = mmap(NULL, c->chrMmxextFilterCodeSize,
1583 PROT_READ | PROT_WRITE,
1584 MAP_PRIVATE | MAP_ANONYMOUS,
1586 #elif HAVE_VIRTUALALLOC
1587 c->lumMmxextFilterCode = VirtualAlloc(NULL,
1588 c->lumMmxextFilterCodeSize,
1590 PAGE_EXECUTE_READWRITE);
1591 c->chrMmxextFilterCode = VirtualAlloc(NULL,
1592 c->chrMmxextFilterCodeSize,
1594 PAGE_EXECUTE_READWRITE);
1596 c->lumMmxextFilterCode = av_malloc(c->lumMmxextFilterCodeSize);
1597 c->chrMmxextFilterCode = av_malloc(c->chrMmxextFilterCodeSize);
1600 #ifdef MAP_ANONYMOUS
1601 if (c->lumMmxextFilterCode == MAP_FAILED || c->chrMmxextFilterCode == MAP_FAILED)
1603 if (!c->lumMmxextFilterCode || !c->chrMmxextFilterCode)
1606 av_log(c, AV_LOG_ERROR, "Failed to allocate MMX2FilterCode\n");
1607 return AVERROR(ENOMEM);
1610 FF_ALLOCZ_OR_GOTO(c, c->hLumFilter, (dstW / 8 + 8) * sizeof(int16_t), fail);
1611 FF_ALLOCZ_OR_GOTO(c, c->hChrFilter, (c->chrDstW / 4 + 8) * sizeof(int16_t), fail);
1612 FF_ALLOCZ_OR_GOTO(c, c->hLumFilterPos, (dstW / 2 / 8 + 8) * sizeof(int32_t), fail);
1613 FF_ALLOCZ_OR_GOTO(c, c->hChrFilterPos, (c->chrDstW / 2 / 4 + 8) * sizeof(int32_t), fail);
1615 ff_init_hscaler_mmxext( dstW, c->lumXInc, c->lumMmxextFilterCode,
1616 c->hLumFilter, (uint32_t*)c->hLumFilterPos, 8);
1617 ff_init_hscaler_mmxext(c->chrDstW, c->chrXInc, c->chrMmxextFilterCode,
1618 c->hChrFilter, (uint32_t*)c->hChrFilterPos, 4);
1621 if ( mprotect(c->lumMmxextFilterCode, c->lumMmxextFilterCodeSize, PROT_EXEC | PROT_READ) == -1
1622 || mprotect(c->chrMmxextFilterCode, c->chrMmxextFilterCodeSize, PROT_EXEC | PROT_READ) == -1) {
1623 av_log(c, AV_LOG_ERROR, "mprotect failed, cannot use fast bilinear scaler\n");
1628 #endif /* HAVE_MMXEXT_INLINE */
1630 const int filterAlign = X86_MMX(cpu_flags) ? 4 :
1631 PPC_ALTIVEC(cpu_flags) ? 8 :
1632 have_neon(cpu_flags) ? 8 : 1;
1634 if ((ret = initFilter(&c->hLumFilter, &c->hLumFilterPos,
1635 &c->hLumFilterSize, c->lumXInc,
1636 srcW, dstW, filterAlign, 1 << 14,
1637 (flags & SWS_BICUBLIN) ? (flags | SWS_BICUBIC) : flags,
1638 cpu_flags, srcFilter->lumH, dstFilter->lumH,
1640 get_local_pos(c, 0, 0, 0),
1641 get_local_pos(c, 0, 0, 0))) < 0)
1643 if ((ret = initFilter(&c->hChrFilter, &c->hChrFilterPos,
1644 &c->hChrFilterSize, c->chrXInc,
1645 c->chrSrcW, c->chrDstW, filterAlign, 1 << 14,
1646 (flags & SWS_BICUBLIN) ? (flags | SWS_BILINEAR) : flags,
1647 cpu_flags, srcFilter->chrH, dstFilter->chrH,
1649 get_local_pos(c, c->chrSrcHSubSample, c->src_h_chr_pos, 0),
1650 get_local_pos(c, c->chrDstHSubSample, c->dst_h_chr_pos, 0))) < 0)
1653 } // initialize horizontal stuff
1655 /* precalculate vertical scaler filter coefficients */
1657 const int filterAlign = X86_MMX(cpu_flags) ? 2 :
1658 PPC_ALTIVEC(cpu_flags) ? 8 :
1659 have_neon(cpu_flags) ? 2 : 1;
1661 if ((ret = initFilter(&c->vLumFilter, &c->vLumFilterPos, &c->vLumFilterSize,
1662 c->lumYInc, srcH, dstH, filterAlign, (1 << 12),
1663 (flags & SWS_BICUBLIN) ? (flags | SWS_BICUBIC) : flags,
1664 cpu_flags, srcFilter->lumV, dstFilter->lumV,
1666 get_local_pos(c, 0, 0, 1),
1667 get_local_pos(c, 0, 0, 1))) < 0)
1669 if ((ret = initFilter(&c->vChrFilter, &c->vChrFilterPos, &c->vChrFilterSize,
1670 c->chrYInc, c->chrSrcH, c->chrDstH,
1671 filterAlign, (1 << 12),
1672 (flags & SWS_BICUBLIN) ? (flags | SWS_BILINEAR) : flags,
1673 cpu_flags, srcFilter->chrV, dstFilter->chrV,
1675 get_local_pos(c, c->chrSrcVSubSample, c->src_v_chr_pos, 1),
1676 get_local_pos(c, c->chrDstVSubSample, c->dst_v_chr_pos, 1))) < 0)
1681 FF_ALLOC_OR_GOTO(c, c->vYCoeffsBank, sizeof(vector signed short) * c->vLumFilterSize * c->dstH, fail);
1682 FF_ALLOC_OR_GOTO(c, c->vCCoeffsBank, sizeof(vector signed short) * c->vChrFilterSize * c->chrDstH, fail);
1684 for (i = 0; i < c->vLumFilterSize * c->dstH; i++) {
1686 short *p = (short *)&c->vYCoeffsBank[i];
1687 for (j = 0; j < 8; j++)
1688 p[j] = c->vLumFilter[i];
1691 for (i = 0; i < c->vChrFilterSize * c->chrDstH; i++) {
1693 short *p = (short *)&c->vCCoeffsBank[i];
1694 for (j = 0; j < 8; j++)
1695 p[j] = c->vChrFilter[i];
1700 for (i = 0; i < 4; i++)
1701 FF_ALLOCZ_OR_GOTO(c, c->dither_error[i], (c->dstW+2) * sizeof(int), fail);
1703 c->needAlpha = (CONFIG_SWSCALE_ALPHA && isALPHA(c->srcFormat) && isALPHA(c->dstFormat)) ? 1 : 0;
1705 // 64 / c->scalingBpp is the same as 16 / sizeof(scaling_intermediate)
1706 c->uv_off = (dst_stride>>1) + 64 / (c->dstBpc &~ 7);
1707 c->uv_offx2 = dst_stride + 16;
1709 av_assert0(c->chrDstH <= dstH);
1711 if (flags & SWS_PRINT_INFO) {
1712 const char *scaler = NULL, *cpucaps;
1714 for (i = 0; i < FF_ARRAY_ELEMS(scale_algorithms); i++) {
1715 if (flags & scale_algorithms[i].flag) {
1716 scaler = scale_algorithms[i].description;
1721 scaler = "ehh flags invalid?!";
1722 av_log(c, AV_LOG_INFO, "%s scaler, from %s to %s%s ",
1724 av_get_pix_fmt_name(srcFormat),
1726 dstFormat == AV_PIX_FMT_BGR555 || dstFormat == AV_PIX_FMT_BGR565 ||
1727 dstFormat == AV_PIX_FMT_RGB444BE || dstFormat == AV_PIX_FMT_RGB444LE ||
1728 dstFormat == AV_PIX_FMT_BGR444BE || dstFormat == AV_PIX_FMT_BGR444LE ?
1733 av_get_pix_fmt_name(dstFormat));
1735 if (INLINE_MMXEXT(cpu_flags))
1737 else if (INLINE_AMD3DNOW(cpu_flags))
1739 else if (INLINE_MMX(cpu_flags))
1741 else if (PPC_ALTIVEC(cpu_flags))
1742 cpucaps = "AltiVec";
1746 av_log(c, AV_LOG_INFO, "using %s\n", cpucaps);
1748 av_log(c, AV_LOG_VERBOSE, "%dx%d -> %dx%d\n", srcW, srcH, dstW, dstH);
1749 av_log(c, AV_LOG_DEBUG,
1750 "lum srcW=%d srcH=%d dstW=%d dstH=%d xInc=%d yInc=%d\n",
1751 c->srcW, c->srcH, c->dstW, c->dstH, c->lumXInc, c->lumYInc);
1752 av_log(c, AV_LOG_DEBUG,
1753 "chr srcW=%d srcH=%d dstW=%d dstH=%d xInc=%d yInc=%d\n",
1754 c->chrSrcW, c->chrSrcH, c->chrDstW, c->chrDstH,
1755 c->chrXInc, c->chrYInc);
1758 /* alpha blend special case, note this has been split via cascaded contexts if its scaled */
1759 if (unscaled && !usesHFilter && !usesVFilter &&
1760 c->alphablend != SWS_ALPHA_BLEND_NONE &&
1761 isALPHA(srcFormat) &&
1762 (c->srcRange == c->dstRange || isAnyRGB(dstFormat)) &&
1763 alphaless_fmt(srcFormat) == dstFormat
1765 c->swscale = ff_sws_alphablendaway;
1767 if (flags & SWS_PRINT_INFO)
1768 av_log(c, AV_LOG_INFO,
1769 "using alpha blendaway %s -> %s special converter\n",
1770 av_get_pix_fmt_name(srcFormat), av_get_pix_fmt_name(dstFormat));
1774 /* unscaled special cases */
1775 if (unscaled && !usesHFilter && !usesVFilter &&
1776 (c->srcRange == c->dstRange || isAnyRGB(dstFormat))) {
1777 ff_get_unscaled_swscale(c);
1780 if (flags & SWS_PRINT_INFO)
1781 av_log(c, AV_LOG_INFO,
1782 "using unscaled %s -> %s special converter\n",
1783 av_get_pix_fmt_name(srcFormat), av_get_pix_fmt_name(dstFormat));
1788 c->swscale = ff_getSwsFunc(c);
1789 return ff_init_filters(c);
1790 fail: // FIXME replace things by appropriate error codes
1791 if (ret == RETCODE_USE_CASCADE) {
1792 int tmpW = sqrt(srcW * (int64_t)dstW);
1793 int tmpH = sqrt(srcH * (int64_t)dstH);
1794 enum AVPixelFormat tmpFormat = AV_PIX_FMT_YUV420P;
1796 if (isALPHA(srcFormat))
1797 tmpFormat = AV_PIX_FMT_YUVA420P;
1799 if (srcW*(int64_t)srcH <= 4LL*dstW*dstH)
1800 return AVERROR(EINVAL);
1802 ret = av_image_alloc(c->cascaded_tmp, c->cascaded_tmpStride,
1803 tmpW, tmpH, tmpFormat, 64);
1807 c->cascaded_context[0] = sws_getContext(srcW, srcH, srcFormat,
1808 tmpW, tmpH, tmpFormat,
1809 flags, srcFilter, NULL, c->param);
1810 if (!c->cascaded_context[0])
1813 c->cascaded_context[1] = sws_getContext(tmpW, tmpH, tmpFormat,
1814 dstW, dstH, dstFormat,
1815 flags, NULL, dstFilter, c->param);
1816 if (!c->cascaded_context[1])
1823 SwsContext *sws_alloc_set_opts(int srcW, int srcH, enum AVPixelFormat srcFormat,
1824 int dstW, int dstH, enum AVPixelFormat dstFormat,
1825 int flags, const double *param)
1829 if (!(c = sws_alloc_context()))
1837 c->srcFormat = srcFormat;
1838 c->dstFormat = dstFormat;
1841 c->param[0] = param[0];
1842 c->param[1] = param[1];
1848 SwsContext *sws_getContext(int srcW, int srcH, enum AVPixelFormat srcFormat,
1849 int dstW, int dstH, enum AVPixelFormat dstFormat,
1850 int flags, SwsFilter *srcFilter,
1851 SwsFilter *dstFilter, const double *param)
1855 c = sws_alloc_set_opts(srcW, srcH, srcFormat,
1856 dstW, dstH, dstFormat,
1861 if (sws_init_context(c, srcFilter, dstFilter) < 0) {
1869 static int isnan_vec(SwsVector *a)
1872 for (i=0; i<a->length; i++)
1873 if (isnan(a->coeff[i]))
1878 static void makenan_vec(SwsVector *a)
1881 for (i=0; i<a->length; i++)
1885 SwsFilter *sws_getDefaultFilter(float lumaGBlur, float chromaGBlur,
1886 float lumaSharpen, float chromaSharpen,
1887 float chromaHShift, float chromaVShift,
1890 SwsFilter *filter = av_malloc(sizeof(SwsFilter));
1894 if (lumaGBlur != 0.0) {
1895 filter->lumH = sws_getGaussianVec(lumaGBlur, 3.0);
1896 filter->lumV = sws_getGaussianVec(lumaGBlur, 3.0);
1898 filter->lumH = sws_getIdentityVec();
1899 filter->lumV = sws_getIdentityVec();
1902 if (chromaGBlur != 0.0) {
1903 filter->chrH = sws_getGaussianVec(chromaGBlur, 3.0);
1904 filter->chrV = sws_getGaussianVec(chromaGBlur, 3.0);
1906 filter->chrH = sws_getIdentityVec();
1907 filter->chrV = sws_getIdentityVec();
1910 if (!filter->lumH || !filter->lumV || !filter->chrH || !filter->chrV)
1913 if (chromaSharpen != 0.0) {
1914 SwsVector *id = sws_getIdentityVec();
1917 sws_scaleVec(filter->chrH, -chromaSharpen);
1918 sws_scaleVec(filter->chrV, -chromaSharpen);
1919 sws_addVec(filter->chrH, id);
1920 sws_addVec(filter->chrV, id);
1924 if (lumaSharpen != 0.0) {
1925 SwsVector *id = sws_getIdentityVec();
1928 sws_scaleVec(filter->lumH, -lumaSharpen);
1929 sws_scaleVec(filter->lumV, -lumaSharpen);
1930 sws_addVec(filter->lumH, id);
1931 sws_addVec(filter->lumV, id);
1935 if (chromaHShift != 0.0)
1936 sws_shiftVec(filter->chrH, (int)(chromaHShift + 0.5));
1938 if (chromaVShift != 0.0)
1939 sws_shiftVec(filter->chrV, (int)(chromaVShift + 0.5));
1941 sws_normalizeVec(filter->chrH, 1.0);
1942 sws_normalizeVec(filter->chrV, 1.0);
1943 sws_normalizeVec(filter->lumH, 1.0);
1944 sws_normalizeVec(filter->lumV, 1.0);
1946 if (isnan_vec(filter->chrH) ||
1947 isnan_vec(filter->chrV) ||
1948 isnan_vec(filter->lumH) ||
1949 isnan_vec(filter->lumV))
1953 sws_printVec2(filter->chrH, NULL, AV_LOG_DEBUG);
1955 sws_printVec2(filter->lumH, NULL, AV_LOG_DEBUG);
1960 sws_freeVec(filter->lumH);
1961 sws_freeVec(filter->lumV);
1962 sws_freeVec(filter->chrH);
1963 sws_freeVec(filter->chrV);
1968 SwsVector *sws_allocVec(int length)
1972 if(length <= 0 || length > INT_MAX/ sizeof(double))
1975 vec = av_malloc(sizeof(SwsVector));
1978 vec->length = length;
1979 vec->coeff = av_malloc(sizeof(double) * length);
1985 SwsVector *sws_getGaussianVec(double variance, double quality)
1987 const int length = (int)(variance * quality + 0.5) | 1;
1989 double middle = (length - 1) * 0.5;
1992 if(variance < 0 || quality < 0)
1995 vec = sws_allocVec(length);
2000 for (i = 0; i < length; i++) {
2001 double dist = i - middle;
2002 vec->coeff[i] = exp(-dist * dist / (2 * variance * variance)) /
2003 sqrt(2 * variance * M_PI);
2006 sws_normalizeVec(vec, 1.0);
2012 * Allocate and return a vector with length coefficients, all
2013 * with the same value c.
2015 #if !FF_API_SWS_VECTOR
2018 SwsVector *sws_getConstVec(double c, int length)
2021 SwsVector *vec = sws_allocVec(length);
2026 for (i = 0; i < length; i++)
2033 * Allocate and return a vector with just one coefficient, with
2036 #if !FF_API_SWS_VECTOR
2039 SwsVector *sws_getIdentityVec(void)
2041 return sws_getConstVec(1.0, 1);
2044 static double sws_dcVec(SwsVector *a)
2049 for (i = 0; i < a->length; i++)
2055 void sws_scaleVec(SwsVector *a, double scalar)
2059 for (i = 0; i < a->length; i++)
2060 a->coeff[i] *= scalar;
2063 void sws_normalizeVec(SwsVector *a, double height)
2065 sws_scaleVec(a, height / sws_dcVec(a));
2068 #if FF_API_SWS_VECTOR
2069 static SwsVector *sws_getConvVec(SwsVector *a, SwsVector *b)
2071 int length = a->length + b->length - 1;
2073 SwsVector *vec = sws_getConstVec(0.0, length);
2078 for (i = 0; i < a->length; i++) {
2079 for (j = 0; j < b->length; j++) {
2080 vec->coeff[i + j] += a->coeff[i] * b->coeff[j];
2088 static SwsVector *sws_sumVec(SwsVector *a, SwsVector *b)
2090 int length = FFMAX(a->length, b->length);
2092 SwsVector *vec = sws_getConstVec(0.0, length);
2097 for (i = 0; i < a->length; i++)
2098 vec->coeff[i + (length - 1) / 2 - (a->length - 1) / 2] += a->coeff[i];
2099 for (i = 0; i < b->length; i++)
2100 vec->coeff[i + (length - 1) / 2 - (b->length - 1) / 2] += b->coeff[i];
2105 #if FF_API_SWS_VECTOR
2106 static SwsVector *sws_diffVec(SwsVector *a, SwsVector *b)
2108 int length = FFMAX(a->length, b->length);
2110 SwsVector *vec = sws_getConstVec(0.0, length);
2115 for (i = 0; i < a->length; i++)
2116 vec->coeff[i + (length - 1) / 2 - (a->length - 1) / 2] += a->coeff[i];
2117 for (i = 0; i < b->length; i++)
2118 vec->coeff[i + (length - 1) / 2 - (b->length - 1) / 2] -= b->coeff[i];
2124 /* shift left / or right if "shift" is negative */
2125 static SwsVector *sws_getShiftedVec(SwsVector *a, int shift)
2127 int length = a->length + FFABS(shift) * 2;
2129 SwsVector *vec = sws_getConstVec(0.0, length);
2134 for (i = 0; i < a->length; i++) {
2135 vec->coeff[i + (length - 1) / 2 -
2136 (a->length - 1) / 2 - shift] = a->coeff[i];
2142 #if !FF_API_SWS_VECTOR
2145 void sws_shiftVec(SwsVector *a, int shift)
2147 SwsVector *shifted = sws_getShiftedVec(a, shift);
2153 a->coeff = shifted->coeff;
2154 a->length = shifted->length;
2158 #if !FF_API_SWS_VECTOR
2161 void sws_addVec(SwsVector *a, SwsVector *b)
2163 SwsVector *sum = sws_sumVec(a, b);
2169 a->coeff = sum->coeff;
2170 a->length = sum->length;
2174 #if FF_API_SWS_VECTOR
2175 void sws_subVec(SwsVector *a, SwsVector *b)
2177 SwsVector *diff = sws_diffVec(a, b);
2183 a->coeff = diff->coeff;
2184 a->length = diff->length;
2188 void sws_convVec(SwsVector *a, SwsVector *b)
2190 SwsVector *conv = sws_getConvVec(a, b);
2196 a->coeff = conv->coeff;
2197 a->length = conv->length;
2201 SwsVector *sws_cloneVec(SwsVector *a)
2203 SwsVector *vec = sws_allocVec(a->length);
2208 memcpy(vec->coeff, a->coeff, a->length * sizeof(*a->coeff));
2215 * Print with av_log() a textual representation of the vector a
2216 * if log_level <= av_log_level.
2218 #if !FF_API_SWS_VECTOR
2221 void sws_printVec2(SwsVector *a, AVClass *log_ctx, int log_level)
2228 for (i = 0; i < a->length; i++)
2229 if (a->coeff[i] > max)
2232 for (i = 0; i < a->length; i++)
2233 if (a->coeff[i] < min)
2238 for (i = 0; i < a->length; i++) {
2239 int x = (int)((a->coeff[i] - min) * 60.0 / range + 0.5);
2240 av_log(log_ctx, log_level, "%1.3f ", a->coeff[i]);
2242 av_log(log_ctx, log_level, " ");
2243 av_log(log_ctx, log_level, "|\n");
2247 void sws_freeVec(SwsVector *a)
2251 av_freep(&a->coeff);
2256 void sws_freeFilter(SwsFilter *filter)
2261 sws_freeVec(filter->lumH);
2262 sws_freeVec(filter->lumV);
2263 sws_freeVec(filter->chrH);
2264 sws_freeVec(filter->chrV);
2268 void sws_freeContext(SwsContext *c)
2274 for (i = 0; i < 4; i++)
2275 av_freep(&c->dither_error[i]);
2277 av_freep(&c->vLumFilter);
2278 av_freep(&c->vChrFilter);
2279 av_freep(&c->hLumFilter);
2280 av_freep(&c->hChrFilter);
2282 av_freep(&c->vYCoeffsBank);
2283 av_freep(&c->vCCoeffsBank);
2286 av_freep(&c->vLumFilterPos);
2287 av_freep(&c->vChrFilterPos);
2288 av_freep(&c->hLumFilterPos);
2289 av_freep(&c->hChrFilterPos);
2293 if (c->lumMmxextFilterCode)
2294 munmap(c->lumMmxextFilterCode, c->lumMmxextFilterCodeSize);
2295 if (c->chrMmxextFilterCode)
2296 munmap(c->chrMmxextFilterCode, c->chrMmxextFilterCodeSize);
2297 #elif HAVE_VIRTUALALLOC
2298 if (c->lumMmxextFilterCode)
2299 VirtualFree(c->lumMmxextFilterCode, 0, MEM_RELEASE);
2300 if (c->chrMmxextFilterCode)
2301 VirtualFree(c->chrMmxextFilterCode, 0, MEM_RELEASE);
2303 av_free(c->lumMmxextFilterCode);
2304 av_free(c->chrMmxextFilterCode);
2306 c->lumMmxextFilterCode = NULL;
2307 c->chrMmxextFilterCode = NULL;
2308 #endif /* HAVE_MMX_INLINE */
2310 av_freep(&c->yuvTable);
2311 av_freep(&c->formatConvBuffer);
2313 sws_freeContext(c->cascaded_context[0]);
2314 sws_freeContext(c->cascaded_context[1]);
2315 sws_freeContext(c->cascaded_context[2]);
2316 memset(c->cascaded_context, 0, sizeof(c->cascaded_context));
2317 av_freep(&c->cascaded_tmp[0]);
2318 av_freep(&c->cascaded1_tmp[0]);
2320 av_freep(&c->gamma);
2321 av_freep(&c->inv_gamma);
2328 struct SwsContext *sws_getCachedContext(struct SwsContext *context, int srcW,
2329 int srcH, enum AVPixelFormat srcFormat,
2331 enum AVPixelFormat dstFormat, int flags,
2332 SwsFilter *srcFilter,
2333 SwsFilter *dstFilter,
2334 const double *param)
2336 static const double default_param[2] = { SWS_PARAM_DEFAULT,
2337 SWS_PARAM_DEFAULT };
2338 int64_t src_h_chr_pos = -513, dst_h_chr_pos = -513,
2339 src_v_chr_pos = -513, dst_v_chr_pos = -513;
2342 param = default_param;
2345 (context->srcW != srcW ||
2346 context->srcH != srcH ||
2347 context->srcFormat != srcFormat ||
2348 context->dstW != dstW ||
2349 context->dstH != dstH ||
2350 context->dstFormat != dstFormat ||
2351 context->flags != flags ||
2352 context->param[0] != param[0] ||
2353 context->param[1] != param[1])) {
2355 av_opt_get_int(context, "src_h_chr_pos", 0, &src_h_chr_pos);
2356 av_opt_get_int(context, "src_v_chr_pos", 0, &src_v_chr_pos);
2357 av_opt_get_int(context, "dst_h_chr_pos", 0, &dst_h_chr_pos);
2358 av_opt_get_int(context, "dst_v_chr_pos", 0, &dst_v_chr_pos);
2359 sws_freeContext(context);
2364 if (!(context = sws_alloc_context()))
2366 context->srcW = srcW;
2367 context->srcH = srcH;
2368 context->srcFormat = srcFormat;
2369 context->dstW = dstW;
2370 context->dstH = dstH;
2371 context->dstFormat = dstFormat;
2372 context->flags = flags;
2373 context->param[0] = param[0];
2374 context->param[1] = param[1];
2376 av_opt_set_int(context, "src_h_chr_pos", src_h_chr_pos, 0);
2377 av_opt_set_int(context, "src_v_chr_pos", src_v_chr_pos, 0);
2378 av_opt_set_int(context, "dst_h_chr_pos", dst_h_chr_pos, 0);
2379 av_opt_set_int(context, "dst_v_chr_pos", dst_v_chr_pos, 0);
2381 if (sws_init_context(context, srcFilter, dstFilter) < 0) {
2382 sws_freeContext(context);