1/* 2 * Copyright (C) 2001-2003 Michael Niedermayer <michaelni@gmx.at> 3 * 4 * This file is part of FFmpeg. 5 * 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. 10 * 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. 15 * 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 19 */ 20 21#include "config.h" 22 23#define _SVID_SOURCE // needed for MAP_ANONYMOUS 24#define _DARWIN_C_SOURCE // needed for MAP_ANON 25#include <inttypes.h> 26#include <math.h> 27#include <stdio.h> 28#include <string.h> 29#if HAVE_SYS_MMAN_H 30#include <sys/mman.h> 31#if defined(MAP_ANON) && !defined(MAP_ANONYMOUS) 32#define MAP_ANONYMOUS MAP_ANON 33#endif 34#endif 35#if HAVE_VIRTUALALLOC 36#define WIN32_LEAN_AND_MEAN 37#include <windows.h> 38#endif 39 40#include "libavutil/attributes.h" 41#include "libavutil/avassert.h" 42#include "libavutil/avutil.h" 43#include "libavutil/bswap.h" 44#include "libavutil/cpu.h" 45#include "libavutil/intreadwrite.h" 46#include "libavutil/mathematics.h" 47#include "libavutil/opt.h" 48#include "libavutil/pixdesc.h" 49#include "libavutil/ppc/cpu.h" 50#include "libavutil/x86/asm.h" 51#include "libavutil/x86/cpu.h" 52#include "rgb2rgb.h" 53#include "swscale.h" 54#include "swscale_internal.h" 55 56static void handle_formats(SwsContext *c); 57 58unsigned swscale_version(void) 59{ 60 av_assert0(LIBSWSCALE_VERSION_MICRO >= 100); 61 return LIBSWSCALE_VERSION_INT; 62} 63 64const char *swscale_configuration(void) 65{ 66 return FFMPEG_CONFIGURATION; 67} 68 69const char *swscale_license(void) 70{ 71#define LICENSE_PREFIX "libswscale license: " 72 return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1; 73} 74 75#define RET 0xC3 // near return opcode for x86 76 77typedef struct FormatEntry { 78 uint8_t is_supported_in :1; 79 uint8_t is_supported_out :1; 80 uint8_t is_supported_endianness :1; 81} FormatEntry; 82 83static const FormatEntry format_entries[AV_PIX_FMT_NB] = { 84 [AV_PIX_FMT_YUV420P] = { 1, 1 }, 85 [AV_PIX_FMT_YUYV422] = { 1, 1 }, 86 [AV_PIX_FMT_RGB24] = { 1, 1 }, 87 [AV_PIX_FMT_BGR24] = { 1, 1 }, 88 [AV_PIX_FMT_YUV422P] = { 1, 1 }, 89 [AV_PIX_FMT_YUV444P] = { 1, 1 }, 90 [AV_PIX_FMT_YUV410P] = { 1, 1 }, 91 [AV_PIX_FMT_YUV411P] = { 1, 1 }, 92 [AV_PIX_FMT_GRAY8] = { 1, 1 }, 93 [AV_PIX_FMT_MONOWHITE] = { 1, 1 }, 94 [AV_PIX_FMT_MONOBLACK] = { 1, 1 }, 95 [AV_PIX_FMT_PAL8] = { 1, 0 }, 96 [AV_PIX_FMT_YUVJ420P] = { 1, 1 }, 97 [AV_PIX_FMT_YUVJ411P] = { 1, 1 }, 98 [AV_PIX_FMT_YUVJ422P] = { 1, 1 }, 99 [AV_PIX_FMT_YUVJ444P] = { 1, 1 }, 100 [AV_PIX_FMT_YVYU422] = { 1, 1 }, 101 [AV_PIX_FMT_UYVY422] = { 1, 1 }, 102 [AV_PIX_FMT_UYYVYY411] = { 0, 0 }, 103 [AV_PIX_FMT_BGR8] = { 1, 1 }, 104 [AV_PIX_FMT_BGR4] = { 0, 1 }, 105 [AV_PIX_FMT_BGR4_BYTE] = { 1, 1 }, 106 [AV_PIX_FMT_RGB8] = { 1, 1 }, 107 [AV_PIX_FMT_RGB4] = { 0, 1 }, 108 [AV_PIX_FMT_RGB4_BYTE] = { 1, 1 }, 109 [AV_PIX_FMT_NV12] = { 1, 1 }, 110 [AV_PIX_FMT_NV21] = { 1, 1 }, 111 [AV_PIX_FMT_ARGB] = { 1, 1 }, 112 [AV_PIX_FMT_RGBA] = { 1, 1 }, 113 [AV_PIX_FMT_ABGR] = { 1, 1 }, 114 [AV_PIX_FMT_BGRA] = { 1, 1 }, 115 [AV_PIX_FMT_0RGB] = { 1, 1 }, 116 [AV_PIX_FMT_RGB0] = { 1, 1 }, 117 [AV_PIX_FMT_0BGR] = { 1, 1 }, 118 [AV_PIX_FMT_BGR0] = { 1, 1 }, 119 [AV_PIX_FMT_GRAY16BE] = { 1, 1 }, 120 [AV_PIX_FMT_GRAY16LE] = { 1, 1 }, 121 [AV_PIX_FMT_YUV440P] = { 1, 1 }, 122 [AV_PIX_FMT_YUVJ440P] = { 1, 1 }, 123 [AV_PIX_FMT_YUVA420P] = { 1, 1 }, 124 [AV_PIX_FMT_YUVA422P] = { 1, 1 }, 125 [AV_PIX_FMT_YUVA444P] = { 1, 1 }, 126 [AV_PIX_FMT_YUVA420P9BE] = { 1, 1 }, 127 [AV_PIX_FMT_YUVA420P9LE] = { 1, 1 }, 128 [AV_PIX_FMT_YUVA422P9BE] = { 1, 1 }, 129 [AV_PIX_FMT_YUVA422P9LE] = { 1, 1 }, 130 [AV_PIX_FMT_YUVA444P9BE] = { 1, 1 }, 131 [AV_PIX_FMT_YUVA444P9LE] = { 1, 1 }, 132 [AV_PIX_FMT_YUVA420P10BE]= { 1, 1 }, 133 [AV_PIX_FMT_YUVA420P10LE]= { 1, 1 }, 134 [AV_PIX_FMT_YUVA422P10BE]= { 1, 1 }, 135 [AV_PIX_FMT_YUVA422P10LE]= { 1, 1 }, 136 [AV_PIX_FMT_YUVA444P10BE]= { 1, 1 }, 137 [AV_PIX_FMT_YUVA444P10LE]= { 1, 1 }, 138 [AV_PIX_FMT_YUVA420P16BE]= { 1, 1 }, 139 [AV_PIX_FMT_YUVA420P16LE]= { 1, 1 }, 140 [AV_PIX_FMT_YUVA422P16BE]= { 1, 1 }, 141 [AV_PIX_FMT_YUVA422P16LE]= { 1, 1 }, 142 [AV_PIX_FMT_YUVA444P16BE]= { 1, 1 }, 143 [AV_PIX_FMT_YUVA444P16LE]= { 1, 1 }, 144 [AV_PIX_FMT_RGB48BE] = { 1, 1 }, 145 [AV_PIX_FMT_RGB48LE] = { 1, 1 }, 146 [AV_PIX_FMT_RGBA64BE] = { 1, 1, 1 }, 147 [AV_PIX_FMT_RGBA64LE] = { 1, 1, 1 }, 148 [AV_PIX_FMT_RGB565BE] = { 1, 1 }, 149 [AV_PIX_FMT_RGB565LE] = { 1, 1 }, 150 [AV_PIX_FMT_RGB555BE] = { 1, 1 }, 151 [AV_PIX_FMT_RGB555LE] = { 1, 1 }, 152 [AV_PIX_FMT_BGR565BE] = { 1, 1 }, 153 [AV_PIX_FMT_BGR565LE] = { 1, 1 }, 154 [AV_PIX_FMT_BGR555BE] = { 1, 1 }, 155 [AV_PIX_FMT_BGR555LE] = { 1, 1 }, 156 [AV_PIX_FMT_YUV420P16LE] = { 1, 1 }, 157 [AV_PIX_FMT_YUV420P16BE] = { 1, 1 }, 158 [AV_PIX_FMT_YUV422P16LE] = { 1, 1 }, 159 [AV_PIX_FMT_YUV422P16BE] = { 1, 1 }, 160 [AV_PIX_FMT_YUV444P16LE] = { 1, 1 }, 161 [AV_PIX_FMT_YUV444P16BE] = { 1, 1 }, 162 [AV_PIX_FMT_RGB444LE] = { 1, 1 }, 163 [AV_PIX_FMT_RGB444BE] = { 1, 1 }, 164 [AV_PIX_FMT_BGR444LE] = { 1, 1 }, 165 [AV_PIX_FMT_BGR444BE] = { 1, 1 }, 166 [AV_PIX_FMT_Y400A] = { 1, 0 }, 167 [AV_PIX_FMT_BGR48BE] = { 1, 1 }, 168 [AV_PIX_FMT_BGR48LE] = { 1, 1 }, 169 [AV_PIX_FMT_BGRA64BE] = { 1, 1, 1 }, 170 [AV_PIX_FMT_BGRA64LE] = { 1, 1, 1 }, 171 [AV_PIX_FMT_YUV420P9BE] = { 1, 1 }, 172 [AV_PIX_FMT_YUV420P9LE] = { 1, 1 }, 173 [AV_PIX_FMT_YUV420P10BE] = { 1, 1 }, 174 [AV_PIX_FMT_YUV420P10LE] = { 1, 1 }, 175 [AV_PIX_FMT_YUV420P12BE] = { 1, 1 }, 176 [AV_PIX_FMT_YUV420P12LE] = { 1, 1 }, 177 [AV_PIX_FMT_YUV420P14BE] = { 1, 1 }, 178 [AV_PIX_FMT_YUV420P14LE] = { 1, 1 }, 179 [AV_PIX_FMT_YUV422P9BE] = { 1, 1 }, 180 [AV_PIX_FMT_YUV422P9LE] = { 1, 1 }, 181 [AV_PIX_FMT_YUV422P10BE] = { 1, 1 }, 182 [AV_PIX_FMT_YUV422P10LE] = { 1, 1 }, 183 [AV_PIX_FMT_YUV422P12BE] = { 1, 1 }, 184 [AV_PIX_FMT_YUV422P12LE] = { 1, 1 }, 185 [AV_PIX_FMT_YUV422P14BE] = { 1, 1 }, 186 [AV_PIX_FMT_YUV422P14LE] = { 1, 1 }, 187 [AV_PIX_FMT_YUV444P9BE] = { 1, 1 }, 188 [AV_PIX_FMT_YUV444P9LE] = { 1, 1 }, 189 [AV_PIX_FMT_YUV444P10BE] = { 1, 1 }, 190 [AV_PIX_FMT_YUV444P10LE] = { 1, 1 }, 191 [AV_PIX_FMT_YUV444P12BE] = { 1, 1 }, 192 [AV_PIX_FMT_YUV444P12LE] = { 1, 1 }, 193 [AV_PIX_FMT_YUV444P14BE] = { 1, 1 }, 194 [AV_PIX_FMT_YUV444P14LE] = { 1, 1 }, 195 [AV_PIX_FMT_GBRP] = { 1, 1 }, 196 [AV_PIX_FMT_GBRP9LE] = { 1, 1 }, 197 [AV_PIX_FMT_GBRP9BE] = { 1, 1 }, 198 [AV_PIX_FMT_GBRP10LE] = { 1, 1 }, 199 [AV_PIX_FMT_GBRP10BE] = { 1, 1 }, 200 [AV_PIX_FMT_GBRP12LE] = { 1, 1 }, 201 [AV_PIX_FMT_GBRP12BE] = { 1, 1 }, 202 [AV_PIX_FMT_GBRP14LE] = { 1, 1 }, 203 [AV_PIX_FMT_GBRP14BE] = { 1, 1 }, 204 [AV_PIX_FMT_GBRP16LE] = { 1, 0 }, 205 [AV_PIX_FMT_GBRP16BE] = { 1, 0 }, 206 [AV_PIX_FMT_XYZ12BE] = { 1, 1, 1 }, 207 [AV_PIX_FMT_XYZ12LE] = { 1, 1, 1 }, 208 [AV_PIX_FMT_GBRAP] = { 1, 1 }, 209 [AV_PIX_FMT_GBRAP16LE] = { 1, 0 }, 210 [AV_PIX_FMT_GBRAP16BE] = { 1, 0 }, 211 [AV_PIX_FMT_BAYER_BGGR8] = { 1, 0 }, 212 [AV_PIX_FMT_BAYER_RGGB8] = { 1, 0 }, 213 [AV_PIX_FMT_BAYER_GBRG8] = { 1, 0 }, 214 [AV_PIX_FMT_BAYER_GRBG8] = { 1, 0 }, 215 [AV_PIX_FMT_BAYER_BGGR16LE] = { 1, 0 }, 216 [AV_PIX_FMT_BAYER_BGGR16BE] = { 1, 0 }, 217 [AV_PIX_FMT_BAYER_RGGB16LE] = { 1, 0 }, 218 [AV_PIX_FMT_BAYER_RGGB16BE] = { 1, 0 }, 219 [AV_PIX_FMT_BAYER_GBRG16LE] = { 1, 0 }, 220 [AV_PIX_FMT_BAYER_GBRG16BE] = { 1, 0 }, 221 [AV_PIX_FMT_BAYER_GRBG16LE] = { 1, 0 }, 222 [AV_PIX_FMT_BAYER_GRBG16BE] = { 1, 0 }, 223}; 224 225int sws_isSupportedInput(enum AVPixelFormat pix_fmt) 226{ 227 return (unsigned)pix_fmt < AV_PIX_FMT_NB ? 228 format_entries[pix_fmt].is_supported_in : 0; 229} 230 231int sws_isSupportedOutput(enum AVPixelFormat pix_fmt) 232{ 233 return (unsigned)pix_fmt < AV_PIX_FMT_NB ? 234 format_entries[pix_fmt].is_supported_out : 0; 235} 236 237int sws_isSupportedEndiannessConversion(enum AVPixelFormat pix_fmt) 238{ 239 return (unsigned)pix_fmt < AV_PIX_FMT_NB ? 240 format_entries[pix_fmt].is_supported_endianness : 0; 241} 242 243#if FF_API_SWS_FORMAT_NAME 244const char *sws_format_name(enum AVPixelFormat format) 245{ 246 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(format); 247 if (desc) 248 return desc->name; 249 else 250 return "Unknown format"; 251} 252#endif 253 254static double getSplineCoeff(double a, double b, double c, double d, 255 double dist) 256{ 257 if (dist <= 1.0) 258 return ((d * dist + c) * dist + b) * dist + a; 259 else 260 return getSplineCoeff(0.0, 261 b + 2.0 * c + 3.0 * d, 262 c + 3.0 * d, 263 -b - 3.0 * c - 6.0 * d, 264 dist - 1.0); 265} 266 267static av_cold int get_local_pos(SwsContext *s, int chr_subsample, int pos, int dir) 268{ 269 if (pos < 0) { 270 pos = (128 << chr_subsample) - 128; 271 } 272 pos += 128; // relative to ideal left edge 273 return pos >> chr_subsample; 274} 275 276typedef struct { 277 int flag; ///< flag associated to the algorithm 278 const char *description; ///< human-readable description 279 int size_factor; ///< size factor used when initing the filters 280} ScaleAlgorithm; 281 282static const ScaleAlgorithm scale_algorithms[] = { 283 { SWS_AREA, "area averaging", 1 /* downscale only, for upscale it is bilinear */ }, 284 { SWS_BICUBIC, "bicubic", 4 }, 285 { SWS_BICUBLIN, "luma bicubic / chroma bilinear", -1 }, 286 { SWS_BILINEAR, "bilinear", 2 }, 287 { SWS_FAST_BILINEAR, "fast bilinear", -1 }, 288 { SWS_GAUSS, "Gaussian", 8 /* infinite ;) */ }, 289 { SWS_LANCZOS, "Lanczos", -1 /* custom */ }, 290 { SWS_POINT, "nearest neighbor / point", -1 }, 291 { SWS_SINC, "sinc", 20 /* infinite ;) */ }, 292 { SWS_SPLINE, "bicubic spline", 20 /* infinite :)*/ }, 293 { SWS_X, "experimental", 8 }, 294}; 295 296static av_cold int initFilter(int16_t **outFilter, int32_t **filterPos, 297 int *outFilterSize, int xInc, int srcW, 298 int dstW, int filterAlign, int one, 299 int flags, int cpu_flags, 300 SwsVector *srcFilter, SwsVector *dstFilter, 301 double param[2], int srcPos, int dstPos) 302{ 303 int i; 304 int filterSize; 305 int filter2Size; 306 int minFilterSize; 307 int64_t *filter = NULL; 308 int64_t *filter2 = NULL; 309 const int64_t fone = 1LL << (54 - FFMIN(av_log2(srcW/dstW), 8)); 310 int ret = -1; 311 312 emms_c(); // FIXME should not be required but IS (even for non-MMX versions) 313 314 // NOTE: the +3 is for the MMX(+1) / SSE(+3) scaler which reads over the end 315 FF_ALLOC_ARRAY_OR_GOTO(NULL, *filterPos, (dstW + 3), sizeof(**filterPos), fail); 316 317 if (FFABS(xInc - 0x10000) < 10 && srcPos == dstPos) { // unscaled 318 int i; 319 filterSize = 1; 320 FF_ALLOCZ_ARRAY_OR_GOTO(NULL, filter, 321 dstW, sizeof(*filter) * filterSize, fail); 322 323 for (i = 0; i < dstW; i++) { 324 filter[i * filterSize] = fone; 325 (*filterPos)[i] = i; 326 } 327 } else if (flags & SWS_POINT) { // lame looking point sampling mode 328 int i; 329 int64_t xDstInSrc; 330 filterSize = 1; 331 FF_ALLOC_ARRAY_OR_GOTO(NULL, filter, 332 dstW, sizeof(*filter) * filterSize, fail); 333 334 xDstInSrc = ((dstPos*(int64_t)xInc)>>8) - ((srcPos*0x8000LL)>>7); 335 for (i = 0; i < dstW; i++) { 336 int xx = (xDstInSrc - ((filterSize - 1) << 15) + (1 << 15)) >> 16; 337 338 (*filterPos)[i] = xx; 339 filter[i] = fone; 340 xDstInSrc += xInc; 341 } 342 } else if ((xInc <= (1 << 16) && (flags & SWS_AREA)) || 343 (flags & SWS_FAST_BILINEAR)) { // bilinear upscale 344 int i; 345 int64_t xDstInSrc; 346 filterSize = 2; 347 FF_ALLOC_ARRAY_OR_GOTO(NULL, filter, 348 dstW, sizeof(*filter) * filterSize, fail); 349 350 xDstInSrc = ((dstPos*(int64_t)xInc)>>8) - ((srcPos*0x8000LL)>>7); 351 for (i = 0; i < dstW; i++) { 352 int xx = (xDstInSrc - ((filterSize - 1) << 15) + (1 << 15)) >> 16; 353 int j; 354 355 (*filterPos)[i] = xx; 356 // bilinear upscale / linear interpolate / area averaging 357 for (j = 0; j < filterSize; j++) { 358 int64_t coeff= fone - FFABS(((int64_t)xx<<16) - xDstInSrc)*(fone>>16); 359 if (coeff < 0) 360 coeff = 0; 361 filter[i * filterSize + j] = coeff; 362 xx++; 363 } 364 xDstInSrc += xInc; 365 } 366 } else { 367 int64_t xDstInSrc; 368 int sizeFactor = -1; 369 370 for (i = 0; i < FF_ARRAY_ELEMS(scale_algorithms); i++) { 371 if (flags & scale_algorithms[i].flag && scale_algorithms[i].size_factor > 0) { 372 sizeFactor = scale_algorithms[i].size_factor; 373 break; 374 } 375 } 376 if (flags & SWS_LANCZOS) 377 sizeFactor = param[0] != SWS_PARAM_DEFAULT ? ceil(2 * param[0]) : 6; 378 av_assert0(sizeFactor > 0); 379 380 if (xInc <= 1 << 16) 381 filterSize = 1 + sizeFactor; // upscale 382 else 383 filterSize = 1 + (sizeFactor * srcW + dstW - 1) / dstW; 384 385 filterSize = FFMIN(filterSize, srcW - 2); 386 filterSize = FFMAX(filterSize, 1); 387 388 FF_ALLOC_ARRAY_OR_GOTO(NULL, filter, 389 dstW, sizeof(*filter) * filterSize, fail); 390 391 xDstInSrc = ((dstPos*(int64_t)xInc)>>7) - ((srcPos*0x10000LL)>>7); 392 for (i = 0; i < dstW; i++) { 393 int xx = (xDstInSrc - ((int64_t)(filterSize - 2) << 16)) / (1 << 17); 394 int j; 395 (*filterPos)[i] = xx; 396 for (j = 0; j < filterSize; j++) { 397 int64_t d = (FFABS(((int64_t)xx << 17) - xDstInSrc)) << 13; 398 double floatd; 399 int64_t coeff; 400 401 if (xInc > 1 << 16) 402 d = d * dstW / srcW; 403 floatd = d * (1.0 / (1 << 30)); 404 405 if (flags & SWS_BICUBIC) { 406 int64_t B = (param[0] != SWS_PARAM_DEFAULT ? param[0] : 0) * (1 << 24); 407 int64_t C = (param[1] != SWS_PARAM_DEFAULT ? param[1] : 0.6) * (1 << 24); 408 409 if (d >= 1LL << 31) { 410 coeff = 0.0; 411 } else { 412 int64_t dd = (d * d) >> 30; 413 int64_t ddd = (dd * d) >> 30; 414 415 if (d < 1LL << 30) 416 coeff = (12 * (1 << 24) - 9 * B - 6 * C) * ddd + 417 (-18 * (1 << 24) + 12 * B + 6 * C) * dd + 418 (6 * (1 << 24) - 2 * B) * (1 << 30); 419 else 420 coeff = (-B - 6 * C) * ddd + 421 (6 * B + 30 * C) * dd + 422 (-12 * B - 48 * C) * d + 423 (8 * B + 24 * C) * (1 << 30); 424 } 425 coeff /= (1LL<<54)/fone; 426 } 427#if 0 428 else if (flags & SWS_X) { 429 double p = param ? param * 0.01 : 0.3; 430 coeff = d ? sin(d * M_PI) / (d * M_PI) : 1.0; 431 coeff *= pow(2.0, -p * d * d); 432 } 433#endif 434 else if (flags & SWS_X) { 435 double A = param[0] != SWS_PARAM_DEFAULT ? param[0] : 1.0; 436 double c; 437 438 if (floatd < 1.0) 439 c = cos(floatd * M_PI); 440 else 441 c = -1.0; 442 if (c < 0.0) 443 c = -pow(-c, A); 444 else 445 c = pow(c, A); 446 coeff = (c * 0.5 + 0.5) * fone; 447 } else if (flags & SWS_AREA) { 448 int64_t d2 = d - (1 << 29); 449 if (d2 * xInc < -(1LL << (29 + 16))) 450 coeff = 1.0 * (1LL << (30 + 16)); 451 else if (d2 * xInc < (1LL << (29 + 16))) 452 coeff = -d2 * xInc + (1LL << (29 + 16)); 453 else 454 coeff = 0.0; 455 coeff *= fone >> (30 + 16); 456 } else if (flags & SWS_GAUSS) { 457 double p = param[0] != SWS_PARAM_DEFAULT ? param[0] : 3.0; 458 coeff = (pow(2.0, -p * floatd * floatd)) * fone; 459 } else if (flags & SWS_SINC) { 460 coeff = (d ? sin(floatd * M_PI) / (floatd * M_PI) : 1.0) * fone; 461 } else if (flags & SWS_LANCZOS) { 462 double p = param[0] != SWS_PARAM_DEFAULT ? param[0] : 3.0; 463 coeff = (d ? sin(floatd * M_PI) * sin(floatd * M_PI / p) / 464 (floatd * floatd * M_PI * M_PI / p) : 1.0) * fone; 465 if (floatd > p) 466 coeff = 0; 467 } else if (flags & SWS_BILINEAR) { 468 coeff = (1 << 30) - d; 469 if (coeff < 0) 470 coeff = 0; 471 coeff *= fone >> 30; 472 } else if (flags & SWS_SPLINE) { 473 double p = -2.196152422706632; 474 coeff = getSplineCoeff(1.0, 0.0, p, -p - 1.0, floatd) * fone; 475 } else { 476 av_assert0(0); 477 } 478 479 filter[i * filterSize + j] = coeff; 480 xx++; 481 } 482 xDstInSrc += 2 * xInc; 483 } 484 } 485 486 /* apply src & dst Filter to filter -> filter2 487 * av_free(filter); 488 */ 489 av_assert0(filterSize > 0); 490 filter2Size = filterSize; 491 if (srcFilter) 492 filter2Size += srcFilter->length - 1; 493 if (dstFilter) 494 filter2Size += dstFilter->length - 1; 495 av_assert0(filter2Size > 0); 496 FF_ALLOCZ_ARRAY_OR_GOTO(NULL, filter2, dstW, filter2Size * sizeof(*filter2), fail); 497 498 for (i = 0; i < dstW; i++) { 499 int j, k; 500 501 if (srcFilter) { 502 for (k = 0; k < srcFilter->length; k++) { 503 for (j = 0; j < filterSize; j++) 504 filter2[i * filter2Size + k + j] += 505 srcFilter->coeff[k] * filter[i * filterSize + j]; 506 } 507 } else { 508 for (j = 0; j < filterSize; j++) 509 filter2[i * filter2Size + j] = filter[i * filterSize + j]; 510 } 511 // FIXME dstFilter 512 513 (*filterPos)[i] += (filterSize - 1) / 2 - (filter2Size - 1) / 2; 514 } 515 av_freep(&filter); 516 517 /* try to reduce the filter-size (step1 find size and shift left) */ 518 // Assume it is near normalized (*0.5 or *2.0 is OK but * 0.001 is not). 519 minFilterSize = 0; 520 for (i = dstW - 1; i >= 0; i--) { 521 int min = filter2Size; 522 int j; 523 int64_t cutOff = 0.0; 524 525 /* get rid of near zero elements on the left by shifting left */ 526 for (j = 0; j < filter2Size; j++) { 527 int k; 528 cutOff += FFABS(filter2[i * filter2Size]); 529 530 if (cutOff > SWS_MAX_REDUCE_CUTOFF * fone) 531 break; 532 533 /* preserve monotonicity because the core can't handle the 534 * filter otherwise */ 535 if (i < dstW - 1 && (*filterPos)[i] >= (*filterPos)[i + 1]) 536 break; 537 538 // move filter coefficients left 539 for (k = 1; k < filter2Size; k++) 540 filter2[i * filter2Size + k - 1] = filter2[i * filter2Size + k]; 541 filter2[i * filter2Size + k - 1] = 0; 542 (*filterPos)[i]++; 543 } 544 545 cutOff = 0; 546 /* count near zeros on the right */ 547 for (j = filter2Size - 1; j > 0; j--) { 548 cutOff += FFABS(filter2[i * filter2Size + j]); 549 550 if (cutOff > SWS_MAX_REDUCE_CUTOFF * fone) 551 break; 552 min--; 553 } 554 555 if (min > minFilterSize) 556 minFilterSize = min; 557 } 558 559 if (PPC_ALTIVEC(cpu_flags)) { 560 // we can handle the special case 4, so we don't want to go the full 8 561 if (minFilterSize < 5) 562 filterAlign = 4; 563 564 /* We really don't want to waste our time doing useless computation, so 565 * fall back on the scalar C code for very small filters. 566 * Vectorizing is worth it only if you have a decent-sized vector. */ 567 if (minFilterSize < 3) 568 filterAlign = 1; 569 } 570 571 if (HAVE_MMX && cpu_flags & AV_CPU_FLAG_MMX) { 572 // special case for unscaled vertical filtering 573 if (minFilterSize == 1 && filterAlign == 2) 574 filterAlign = 1; 575 } 576 577 av_assert0(minFilterSize > 0); 578 filterSize = (minFilterSize + (filterAlign - 1)) & (~(filterAlign - 1)); 579 av_assert0(filterSize > 0); 580 filter = av_malloc_array(dstW, filterSize * sizeof(*filter)); 581 if (!filter) 582 goto fail; 583 if (filterSize >= MAX_FILTER_SIZE * 16 / 584 ((flags & SWS_ACCURATE_RND) ? APCK_SIZE : 16)) { 585 av_log(NULL, AV_LOG_ERROR, "sws: filterSize %d is too large, try less extreme scaling or set --sws-max-filter-size and recompile\n", 586 FF_CEIL_RSHIFT((filterSize+1) * ((flags & SWS_ACCURATE_RND) ? APCK_SIZE : 16), 4)); 587 goto fail; 588 } 589 *outFilterSize = filterSize; 590 591 if (flags & SWS_PRINT_INFO) 592 av_log(NULL, AV_LOG_VERBOSE, 593 "SwScaler: reducing / aligning filtersize %d -> %d\n", 594 filter2Size, filterSize); 595 /* try to reduce the filter-size (step2 reduce it) */ 596 for (i = 0; i < dstW; i++) { 597 int j; 598 599 for (j = 0; j < filterSize; j++) { 600 if (j >= filter2Size) 601 filter[i * filterSize + j] = 0; 602 else 603 filter[i * filterSize + j] = filter2[i * filter2Size + j]; 604 if ((flags & SWS_BITEXACT) && j >= minFilterSize) 605 filter[i * filterSize + j] = 0; 606 } 607 } 608 609 // FIXME try to align filterPos if possible 610 611 // fix borders 612 for (i = 0; i < dstW; i++) { 613 int j; 614 if ((*filterPos)[i] < 0) { 615 // move filter coefficients left to compensate for filterPos 616 for (j = 1; j < filterSize; j++) { 617 int left = FFMAX(j + (*filterPos)[i], 0); 618 filter[i * filterSize + left] += filter[i * filterSize + j]; 619 filter[i * filterSize + j] = 0; 620 } 621 (*filterPos)[i]= 0; 622 } 623 624 if ((*filterPos)[i] + filterSize > srcW) { 625 int shift = (*filterPos)[i] + filterSize - srcW; 626 // move filter coefficients right to compensate for filterPos 627 for (j = filterSize - 2; j >= 0; j--) { 628 int right = FFMIN(j + shift, filterSize - 1); 629 filter[i * filterSize + right] += filter[i * filterSize + j]; 630 filter[i * filterSize + j] = 0; 631 } 632 (*filterPos)[i]= srcW - filterSize; 633 } 634 } 635 636 // Note the +1 is for the MMX scaler which reads over the end 637 /* align at 16 for AltiVec (needed by hScale_altivec_real) */ 638 FF_ALLOCZ_ARRAY_OR_GOTO(NULL, *outFilter, 639 (dstW + 3), *outFilterSize * sizeof(int16_t), fail); 640 641 /* normalize & store in outFilter */ 642 for (i = 0; i < dstW; i++) { 643 int j; 644 int64_t error = 0; 645 int64_t sum = 0; 646 647 for (j = 0; j < filterSize; j++) { 648 sum += filter[i * filterSize + j]; 649 } 650 sum = (sum + one / 2) / one; 651 if (!sum) { 652 av_log(NULL, AV_LOG_WARNING, "SwScaler: zero vector in scaling\n"); 653 sum = 1; 654 } 655 for (j = 0; j < *outFilterSize; j++) { 656 int64_t v = filter[i * filterSize + j] + error; 657 int intV = ROUNDED_DIV(v, sum); 658 (*outFilter)[i * (*outFilterSize) + j] = intV; 659 error = v - intV * sum; 660 } 661 } 662 663 (*filterPos)[dstW + 0] = 664 (*filterPos)[dstW + 1] = 665 (*filterPos)[dstW + 2] = (*filterPos)[dstW - 1]; /* the MMX/SSE scaler will 666 * read over the end */ 667 for (i = 0; i < *outFilterSize; i++) { 668 int k = (dstW - 1) * (*outFilterSize) + i; 669 (*outFilter)[k + 1 * (*outFilterSize)] = 670 (*outFilter)[k + 2 * (*outFilterSize)] = 671 (*outFilter)[k + 3 * (*outFilterSize)] = (*outFilter)[k]; 672 } 673 674 ret = 0; 675 676fail: 677 if(ret < 0) 678 av_log(NULL, AV_LOG_ERROR, "sws: initFilter failed\n"); 679 av_free(filter); 680 av_free(filter2); 681 return ret; 682} 683 684#if HAVE_MMXEXT_INLINE 685static av_cold int init_hscaler_mmxext(int dstW, int xInc, uint8_t *filterCode, 686 int16_t *filter, int32_t *filterPos, 687 int numSplits) 688{ 689 uint8_t *fragmentA; 690 x86_reg imm8OfPShufW1A; 691 x86_reg imm8OfPShufW2A; 692 x86_reg fragmentLengthA; 693 uint8_t *fragmentB; 694 x86_reg imm8OfPShufW1B; 695 x86_reg imm8OfPShufW2B; 696 x86_reg fragmentLengthB; 697 int fragmentPos; 698 699 int xpos, i; 700 701 // create an optimized horizontal scaling routine 702 /* This scaler is made of runtime-generated MMXEXT code using specially tuned 703 * pshufw instructions. For every four output pixels, if four input pixels 704 * are enough for the fast bilinear scaling, then a chunk of fragmentB is 705 * used. If five input pixels are needed, then a chunk of fragmentA is used. 706 */ 707 708 // code fragment 709 710 __asm__ volatile ( 711 "jmp 9f \n\t" 712 // Begin 713 "0: \n\t" 714 "movq (%%"REG_d", %%"REG_a"), %%mm3 \n\t" 715 "movd (%%"REG_c", %%"REG_S"), %%mm0 \n\t" 716 "movd 1(%%"REG_c", %%"REG_S"), %%mm1 \n\t" 717 "punpcklbw %%mm7, %%mm1 \n\t" 718 "punpcklbw %%mm7, %%mm0 \n\t" 719 "pshufw $0xFF, %%mm1, %%mm1 \n\t" 720 "1: \n\t" 721 "pshufw $0xFF, %%mm0, %%mm0 \n\t" 722 "2: \n\t" 723 "psubw %%mm1, %%mm0 \n\t" 724 "movl 8(%%"REG_b", %%"REG_a"), %%esi \n\t" 725 "pmullw %%mm3, %%mm0 \n\t" 726 "psllw $7, %%mm1 \n\t" 727 "paddw %%mm1, %%mm0 \n\t" 728 729 "movq %%mm0, (%%"REG_D", %%"REG_a") \n\t" 730 731 "add $8, %%"REG_a" \n\t" 732 // End 733 "9: \n\t" 734 // "int $3 \n\t" 735 "lea " LOCAL_MANGLE(0b) ", %0 \n\t" 736 "lea " LOCAL_MANGLE(1b) ", %1 \n\t" 737 "lea " LOCAL_MANGLE(2b) ", %2 \n\t" 738 "dec %1 \n\t" 739 "dec %2 \n\t" 740 "sub %0, %1 \n\t" 741 "sub %0, %2 \n\t" 742 "lea " LOCAL_MANGLE(9b) ", %3 \n\t" 743 "sub %0, %3 \n\t" 744 745 746 : "=r" (fragmentA), "=r" (imm8OfPShufW1A), "=r" (imm8OfPShufW2A), 747 "=r" (fragmentLengthA) 748 ); 749 750 __asm__ volatile ( 751 "jmp 9f \n\t" 752 // Begin 753 "0: \n\t" 754 "movq (%%"REG_d", %%"REG_a"), %%mm3 \n\t" 755 "movd (%%"REG_c", %%"REG_S"), %%mm0 \n\t" 756 "punpcklbw %%mm7, %%mm0 \n\t" 757 "pshufw $0xFF, %%mm0, %%mm1 \n\t" 758 "1: \n\t" 759 "pshufw $0xFF, %%mm0, %%mm0 \n\t" 760 "2: \n\t" 761 "psubw %%mm1, %%mm0 \n\t" 762 "movl 8(%%"REG_b", %%"REG_a"), %%esi \n\t" 763 "pmullw %%mm3, %%mm0 \n\t" 764 "psllw $7, %%mm1 \n\t" 765 "paddw %%mm1, %%mm0 \n\t" 766 767 "movq %%mm0, (%%"REG_D", %%"REG_a") \n\t" 768 769 "add $8, %%"REG_a" \n\t" 770 // End 771 "9: \n\t" 772 // "int $3 \n\t" 773 "lea " LOCAL_MANGLE(0b) ", %0 \n\t" 774 "lea " LOCAL_MANGLE(1b) ", %1 \n\t" 775 "lea " LOCAL_MANGLE(2b) ", %2 \n\t" 776 "dec %1 \n\t" 777 "dec %2 \n\t" 778 "sub %0, %1 \n\t" 779 "sub %0, %2 \n\t" 780 "lea " LOCAL_MANGLE(9b) ", %3 \n\t" 781 "sub %0, %3 \n\t" 782 783 784 : "=r" (fragmentB), "=r" (imm8OfPShufW1B), "=r" (imm8OfPShufW2B), 785 "=r" (fragmentLengthB) 786 ); 787 788 xpos = 0; // lumXInc/2 - 0x8000; // difference between pixel centers 789 fragmentPos = 0; 790 791 for (i = 0; i < dstW / numSplits; i++) { 792 int xx = xpos >> 16; 793 794 if ((i & 3) == 0) { 795 int a = 0; 796 int b = ((xpos + xInc) >> 16) - xx; 797 int c = ((xpos + xInc * 2) >> 16) - xx; 798 int d = ((xpos + xInc * 3) >> 16) - xx; 799 int inc = (d + 1 < 4); 800 uint8_t *fragment = inc ? fragmentB : fragmentA; 801 x86_reg imm8OfPShufW1 = inc ? imm8OfPShufW1B : imm8OfPShufW1A; 802 x86_reg imm8OfPShufW2 = inc ? imm8OfPShufW2B : imm8OfPShufW2A; 803 x86_reg fragmentLength = inc ? fragmentLengthB : fragmentLengthA; 804 int maxShift = 3 - (d + inc); 805 int shift = 0; 806 807 if (filterCode) { 808 filter[i] = ((xpos & 0xFFFF) ^ 0xFFFF) >> 9; 809 filter[i + 1] = (((xpos + xInc) & 0xFFFF) ^ 0xFFFF) >> 9; 810 filter[i + 2] = (((xpos + xInc * 2) & 0xFFFF) ^ 0xFFFF) >> 9; 811 filter[i + 3] = (((xpos + xInc * 3) & 0xFFFF) ^ 0xFFFF) >> 9; 812 filterPos[i / 2] = xx; 813 814 memcpy(filterCode + fragmentPos, fragment, fragmentLength); 815 816 filterCode[fragmentPos + imm8OfPShufW1] = (a + inc) | 817 ((b + inc) << 2) | 818 ((c + inc) << 4) | 819 ((d + inc) << 6); 820 filterCode[fragmentPos + imm8OfPShufW2] = a | (b << 2) | 821 (c << 4) | 822 (d << 6); 823 824 if (i + 4 - inc >= dstW) 825 shift = maxShift; // avoid overread 826 else if ((filterPos[i / 2] & 3) <= maxShift) 827 shift = filterPos[i / 2] & 3; // align 828 829 if (shift && i >= shift) { 830 filterCode[fragmentPos + imm8OfPShufW1] += 0x55 * shift; 831 filterCode[fragmentPos + imm8OfPShufW2] += 0x55 * shift; 832 filterPos[i / 2] -= shift; 833 } 834 } 835 836 fragmentPos += fragmentLength; 837 838 if (filterCode) 839 filterCode[fragmentPos] = RET; 840 } 841 xpos += xInc; 842 } 843 if (filterCode) 844 filterPos[((i / 2) + 1) & (~1)] = xpos >> 16; // needed to jump to the next part 845 846 return fragmentPos + 1; 847} 848#endif /* HAVE_MMXEXT_INLINE */ 849 850static void fill_rgb2yuv_table(SwsContext *c, const int table[4], int dstRange) 851{ 852 int64_t W, V, Z, Cy, Cu, Cv; 853 int64_t vr = table[0]; 854 int64_t ub = table[1]; 855 int64_t ug = -table[2]; 856 int64_t vg = -table[3]; 857 int64_t ONE = 65536; 858 int64_t cy = ONE; 859 uint8_t *p = (uint8_t*)c->input_rgb2yuv_table; 860 int i; 861 static const int8_t map[] = { 862 BY_IDX, GY_IDX, -1 , BY_IDX, BY_IDX, GY_IDX, -1 , BY_IDX, 863 RY_IDX, -1 , GY_IDX, RY_IDX, RY_IDX, -1 , GY_IDX, RY_IDX, 864 RY_IDX, GY_IDX, -1 , RY_IDX, RY_IDX, GY_IDX, -1 , RY_IDX, 865 BY_IDX, -1 , GY_IDX, BY_IDX, BY_IDX, -1 , GY_IDX, BY_IDX, 866 BU_IDX, GU_IDX, -1 , BU_IDX, BU_IDX, GU_IDX, -1 , BU_IDX, 867 RU_IDX, -1 , GU_IDX, RU_IDX, RU_IDX, -1 , GU_IDX, RU_IDX, 868 RU_IDX, GU_IDX, -1 , RU_IDX, RU_IDX, GU_IDX, -1 , RU_IDX, 869 BU_IDX, -1 , GU_IDX, BU_IDX, BU_IDX, -1 , GU_IDX, BU_IDX, 870 BV_IDX, GV_IDX, -1 , BV_IDX, BV_IDX, GV_IDX, -1 , BV_IDX, 871 RV_IDX, -1 , GV_IDX, RV_IDX, RV_IDX, -1 , GV_IDX, RV_IDX, 872 RV_IDX, GV_IDX, -1 , RV_IDX, RV_IDX, GV_IDX, -1 , RV_IDX, 873 BV_IDX, -1 , GV_IDX, BV_IDX, BV_IDX, -1 , GV_IDX, BV_IDX, 874 RY_IDX, BY_IDX, RY_IDX, BY_IDX, RY_IDX, BY_IDX, RY_IDX, BY_IDX, 875 BY_IDX, RY_IDX, BY_IDX, RY_IDX, BY_IDX, RY_IDX, BY_IDX, RY_IDX, 876 GY_IDX, -1 , GY_IDX, -1 , GY_IDX, -1 , GY_IDX, -1 , 877 -1 , GY_IDX, -1 , GY_IDX, -1 , GY_IDX, -1 , GY_IDX, 878 RU_IDX, BU_IDX, RU_IDX, BU_IDX, RU_IDX, BU_IDX, RU_IDX, BU_IDX, 879 BU_IDX, RU_IDX, BU_IDX, RU_IDX, BU_IDX, RU_IDX, BU_IDX, RU_IDX, 880 GU_IDX, -1 , GU_IDX, -1 , GU_IDX, -1 , GU_IDX, -1 , 881 -1 , GU_IDX, -1 , GU_IDX, -1 , GU_IDX, -1 , GU_IDX, 882 RV_IDX, BV_IDX, RV_IDX, BV_IDX, RV_IDX, BV_IDX, RV_IDX, BV_IDX, 883 BV_IDX, RV_IDX, BV_IDX, RV_IDX, BV_IDX, RV_IDX, BV_IDX, RV_IDX, 884 GV_IDX, -1 , GV_IDX, -1 , GV_IDX, -1 , GV_IDX, -1 , 885 -1 , GV_IDX, -1 , GV_IDX, -1 , GV_IDX, -1 , GV_IDX, //23 886 -1 , -1 , -1 , -1 , -1 , -1 , -1 , -1 , //24 887 -1 , -1 , -1 , -1 , -1 , -1 , -1 , -1 , //25 888 -1 , -1 , -1 , -1 , -1 , -1 , -1 , -1 , //26 889 -1 , -1 , -1 , -1 , -1 , -1 , -1 , -1 , //27 890 -1 , -1 , -1 , -1 , -1 , -1 , -1 , -1 , //28 891 -1 , -1 , -1 , -1 , -1 , -1 , -1 , -1 , //29 892 -1 , -1 , -1 , -1 , -1 , -1 , -1 , -1 , //30 893 -1 , -1 , -1 , -1 , -1 , -1 , -1 , -1 , //31 894 BY_IDX, GY_IDX, RY_IDX, -1 , -1 , -1 , -1 , -1 , //32 895 BU_IDX, GU_IDX, RU_IDX, -1 , -1 , -1 , -1 , -1 , //33 896 BV_IDX, GV_IDX, RV_IDX, -1 , -1 , -1 , -1 , -1 , //34 897 }; 898 899 dstRange = 0; //FIXME range = 1 is handled elsewhere 900 901 if (!dstRange) { 902 cy = cy * 255 / 219; 903 } else { 904 vr = vr * 224 / 255; 905 ub = ub * 224 / 255; 906 ug = ug * 224 / 255; 907 vg = vg * 224 / 255; 908 } 909 W = ROUNDED_DIV(ONE*ONE*ug, ub); 910 V = ROUNDED_DIV(ONE*ONE*vg, vr); 911 Z = ONE*ONE-W-V; 912 913 Cy = ROUNDED_DIV(cy*Z, ONE); 914 Cu = ROUNDED_DIV(ub*Z, ONE); 915 Cv = ROUNDED_DIV(vr*Z, ONE); 916 917 c->input_rgb2yuv_table[RY_IDX] = -ROUNDED_DIV((1 << RGB2YUV_SHIFT)*V , Cy); 918 c->input_rgb2yuv_table[GY_IDX] = ROUNDED_DIV((1 << RGB2YUV_SHIFT)*ONE*ONE , Cy); 919 c->input_rgb2yuv_table[BY_IDX] = -ROUNDED_DIV((1 << RGB2YUV_SHIFT)*W , Cy); 920 921 c->input_rgb2yuv_table[RU_IDX] = ROUNDED_DIV((1 << RGB2YUV_SHIFT)*V , Cu); 922 c->input_rgb2yuv_table[GU_IDX] = -ROUNDED_DIV((1 << RGB2YUV_SHIFT)*ONE*ONE , Cu); 923 c->input_rgb2yuv_table[BU_IDX] = ROUNDED_DIV((1 << RGB2YUV_SHIFT)*(Z+W) , Cu); 924 925 c->input_rgb2yuv_table[RV_IDX] = ROUNDED_DIV((1 << RGB2YUV_SHIFT)*(V+Z) , Cv); 926 c->input_rgb2yuv_table[GV_IDX] = -ROUNDED_DIV((1 << RGB2YUV_SHIFT)*ONE*ONE , Cv); 927 c->input_rgb2yuv_table[BV_IDX] = ROUNDED_DIV((1 << RGB2YUV_SHIFT)*W , Cv); 928 929 if(/*!dstRange && */!memcmp(table, ff_yuv2rgb_coeffs[SWS_CS_DEFAULT], sizeof(ff_yuv2rgb_coeffs[SWS_CS_DEFAULT]))) { 930 c->input_rgb2yuv_table[BY_IDX] = ((int)(0.114 * 219 / 255 * (1 << RGB2YUV_SHIFT) + 0.5)); 931 c->input_rgb2yuv_table[BV_IDX] = (-(int)(0.081 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5)); 932 c->input_rgb2yuv_table[BU_IDX] = ((int)(0.500 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5)); 933 c->input_rgb2yuv_table[GY_IDX] = ((int)(0.587 * 219 / 255 * (1 << RGB2YUV_SHIFT) + 0.5)); 934 c->input_rgb2yuv_table[GV_IDX] = (-(int)(0.419 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5)); 935 c->input_rgb2yuv_table[GU_IDX] = (-(int)(0.331 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5)); 936 c->input_rgb2yuv_table[RY_IDX] = ((int)(0.299 * 219 / 255 * (1 << RGB2YUV_SHIFT) + 0.5)); 937 c->input_rgb2yuv_table[RV_IDX] = ((int)(0.500 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5)); 938 c->input_rgb2yuv_table[RU_IDX] = (-(int)(0.169 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5)); 939 } 940 for(i=0; i<FF_ARRAY_ELEMS(map); i++) 941 AV_WL16(p + 16*4 + 2*i, map[i] >= 0 ? c->input_rgb2yuv_table[map[i]] : 0); 942} 943 944static void fill_xyztables(struct SwsContext *c) 945{ 946 int i; 947 double xyzgamma = XYZ_GAMMA; 948 double rgbgamma = 1.0 / RGB_GAMMA; 949 double xyzgammainv = 1.0 / XYZ_GAMMA; 950 double rgbgammainv = RGB_GAMMA; 951 static const int16_t xyz2rgb_matrix[3][4] = { 952 {13270, -6295, -2041}, 953 {-3969, 7682, 170}, 954 { 228, -835, 4329} }; 955 static const int16_t rgb2xyz_matrix[3][4] = { 956 {1689, 1464, 739}, 957 { 871, 2929, 296}, 958 { 79, 488, 3891} }; 959 static int16_t xyzgamma_tab[4096], rgbgamma_tab[4096], xyzgammainv_tab[4096], rgbgammainv_tab[4096]; 960 961 memcpy(c->xyz2rgb_matrix, xyz2rgb_matrix, sizeof(c->xyz2rgb_matrix)); 962 memcpy(c->rgb2xyz_matrix, rgb2xyz_matrix, sizeof(c->rgb2xyz_matrix)); 963 c->xyzgamma = xyzgamma_tab; 964 c->rgbgamma = rgbgamma_tab; 965 c->xyzgammainv = xyzgammainv_tab; 966 c->rgbgammainv = rgbgammainv_tab; 967 968 if (rgbgamma_tab[4095]) 969 return; 970 971 /* set gamma vectors */ 972 for (i = 0; i < 4096; i++) { 973 xyzgamma_tab[i] = lrint(pow(i / 4095.0, xyzgamma) * 4095.0); 974 rgbgamma_tab[i] = lrint(pow(i / 4095.0, rgbgamma) * 4095.0); 975 xyzgammainv_tab[i] = lrint(pow(i / 4095.0, xyzgammainv) * 4095.0); 976 rgbgammainv_tab[i] = lrint(pow(i / 4095.0, rgbgammainv) * 4095.0); 977 } 978} 979 980int sws_setColorspaceDetails(struct SwsContext *c, const int inv_table[4], 981 int srcRange, const int table[4], int dstRange, 982 int brightness, int contrast, int saturation) 983{ 984 const AVPixFmtDescriptor *desc_dst; 985 const AVPixFmtDescriptor *desc_src; 986 int need_reinit = 0; 987 memmove(c->srcColorspaceTable, inv_table, sizeof(int) * 4); 988 memmove(c->dstColorspaceTable, table, sizeof(int) * 4); 989 990 handle_formats(c); 991 desc_dst = av_pix_fmt_desc_get(c->dstFormat); 992 desc_src = av_pix_fmt_desc_get(c->srcFormat); 993 994 if(!isYUV(c->dstFormat) && !isGray(c->dstFormat)) 995 dstRange = 0; 996 if(!isYUV(c->srcFormat) && !isGray(c->srcFormat)) 997 srcRange = 0; 998 999 c->brightness = brightness; 1000 c->contrast = contrast; 1001 c->saturation = saturation; 1002 if (c->srcRange != srcRange || c->dstRange != dstRange) 1003 need_reinit = 1; 1004 c->srcRange = srcRange; 1005 c->dstRange = dstRange; 1006 1007 //The srcBpc check is possibly wrong but we seem to lack a definitive reference to test this 1008 //and what we have in ticket 2939 looks better with this check 1009 if (need_reinit && c->srcBpc == 8) 1010 ff_sws_init_range_convert(c); 1011 1012 if ((isYUV(c->dstFormat) || isGray(c->dstFormat)) && (isYUV(c->srcFormat) || isGray(c->srcFormat))) 1013 return -1; 1014 1015 c->dstFormatBpp = av_get_bits_per_pixel(desc_dst); 1016 c->srcFormatBpp = av_get_bits_per_pixel(desc_src); 1017 1018 if (!isYUV(c->dstFormat) && !isGray(c->dstFormat)) { 1019 ff_yuv2rgb_c_init_tables(c, inv_table, srcRange, brightness, 1020 contrast, saturation); 1021 // FIXME factorize 1022 1023 if (ARCH_PPC) 1024 ff_yuv2rgb_init_tables_ppc(c, inv_table, brightness, 1025 contrast, saturation); 1026 } 1027 1028 fill_rgb2yuv_table(c, table, dstRange); 1029 1030 return 0; 1031} 1032 1033int sws_getColorspaceDetails(struct SwsContext *c, int **inv_table, 1034 int *srcRange, int **table, int *dstRange, 1035 int *brightness, int *contrast, int *saturation) 1036{ 1037 if (!c ) 1038 return -1; 1039 1040 *inv_table = c->srcColorspaceTable; 1041 *table = c->dstColorspaceTable; 1042 *srcRange = c->srcRange; 1043 *dstRange = c->dstRange; 1044 *brightness = c->brightness; 1045 *contrast = c->contrast; 1046 *saturation = c->saturation; 1047 1048 return 0; 1049} 1050 1051static int handle_jpeg(enum AVPixelFormat *format) 1052{ 1053 switch (*format) { 1054 case AV_PIX_FMT_YUVJ420P: 1055 *format = AV_PIX_FMT_YUV420P; 1056 return 1; 1057 case AV_PIX_FMT_YUVJ411P: 1058 *format = AV_PIX_FMT_YUV411P; 1059 return 1; 1060 case AV_PIX_FMT_YUVJ422P: 1061 *format = AV_PIX_FMT_YUV422P; 1062 return 1; 1063 case AV_PIX_FMT_YUVJ444P: 1064 *format = AV_PIX_FMT_YUV444P; 1065 return 1; 1066 case AV_PIX_FMT_YUVJ440P: 1067 *format = AV_PIX_FMT_YUV440P; 1068 return 1; 1069 case AV_PIX_FMT_GRAY8: 1070 case AV_PIX_FMT_GRAY16LE: 1071 case AV_PIX_FMT_GRAY16BE: 1072 return 1; 1073 default: 1074 return 0; 1075 } 1076} 1077 1078static int handle_0alpha(enum AVPixelFormat *format) 1079{ 1080 switch (*format) { 1081 case AV_PIX_FMT_0BGR : *format = AV_PIX_FMT_ABGR ; return 1; 1082 case AV_PIX_FMT_BGR0 : *format = AV_PIX_FMT_BGRA ; return 4; 1083 case AV_PIX_FMT_0RGB : *format = AV_PIX_FMT_ARGB ; return 1; 1084 case AV_PIX_FMT_RGB0 : *format = AV_PIX_FMT_RGBA ; return 4; 1085 default: return 0; 1086 } 1087} 1088 1089static int handle_xyz(enum AVPixelFormat *format) 1090{ 1091 switch (*format) { 1092 case AV_PIX_FMT_XYZ12BE : *format = AV_PIX_FMT_RGB48BE; return 1; 1093 case AV_PIX_FMT_XYZ12LE : *format = AV_PIX_FMT_RGB48LE; return 1; 1094 default: return 0; 1095 } 1096} 1097 1098static void handle_formats(SwsContext *c) 1099{ 1100 c->src0Alpha |= handle_0alpha(&c->srcFormat); 1101 c->dst0Alpha |= handle_0alpha(&c->dstFormat); 1102 c->srcXYZ |= handle_xyz(&c->srcFormat); 1103 c->dstXYZ |= handle_xyz(&c->dstFormat); 1104 if (c->srcXYZ || c->dstXYZ) 1105 fill_xyztables(c); 1106} 1107 1108SwsContext *sws_alloc_context(void) 1109{ 1110 SwsContext *c = av_mallocz(sizeof(SwsContext)); 1111 1112 av_assert0(offsetof(SwsContext, redDither) + DITHER32_INT == offsetof(SwsContext, dither32)); 1113 1114 if (c) { 1115 c->av_class = &sws_context_class; 1116 av_opt_set_defaults(c); 1117 } 1118 1119 return c; 1120} 1121 1122av_cold int sws_init_context(SwsContext *c, SwsFilter *srcFilter, 1123 SwsFilter *dstFilter) 1124{ 1125 int i, j; 1126 int usesVFilter, usesHFilter; 1127 int unscaled; 1128 SwsFilter dummyFilter = { NULL, NULL, NULL, NULL }; 1129 int srcW = c->srcW; 1130 int srcH = c->srcH; 1131 int dstW = c->dstW; 1132 int dstH = c->dstH; 1133 int dst_stride = FFALIGN(dstW * sizeof(int16_t) + 66, 16); 1134 int flags, cpu_flags; 1135 enum AVPixelFormat srcFormat = c->srcFormat; 1136 enum AVPixelFormat dstFormat = c->dstFormat; 1137 const AVPixFmtDescriptor *desc_src; 1138 const AVPixFmtDescriptor *desc_dst; 1139 1140 cpu_flags = av_get_cpu_flags(); 1141 flags = c->flags; 1142 emms_c(); 1143 if (!rgb15to16) 1144 sws_rgb2rgb_init(); 1145 1146 unscaled = (srcW == dstW && srcH == dstH); 1147 1148 c->srcRange |= handle_jpeg(&c->srcFormat); 1149 c->dstRange |= handle_jpeg(&c->dstFormat); 1150 1151 if(srcFormat!=c->srcFormat || dstFormat!=c->dstFormat) 1152 av_log(c, AV_LOG_WARNING, "deprecated pixel format used, make sure you did set range correctly\n"); 1153 1154 if (!c->contrast && !c->saturation && !c->dstFormatBpp) 1155 sws_setColorspaceDetails(c, ff_yuv2rgb_coeffs[SWS_CS_DEFAULT], c->srcRange, 1156 ff_yuv2rgb_coeffs[SWS_CS_DEFAULT], 1157 c->dstRange, 0, 1 << 16, 1 << 16); 1158 1159 handle_formats(c); 1160 srcFormat = c->srcFormat; 1161 dstFormat = c->dstFormat; 1162 desc_src = av_pix_fmt_desc_get(srcFormat); 1163 desc_dst = av_pix_fmt_desc_get(dstFormat); 1164 1165 if (!(unscaled && sws_isSupportedEndiannessConversion(srcFormat) && 1166 av_pix_fmt_swap_endianness(srcFormat) == dstFormat)) { 1167 if (!sws_isSupportedInput(srcFormat)) { 1168 av_log(c, AV_LOG_ERROR, "%s is not supported as input pixel format\n", 1169 av_get_pix_fmt_name(srcFormat)); 1170 return AVERROR(EINVAL); 1171 } 1172 if (!sws_isSupportedOutput(dstFormat)) { 1173 av_log(c, AV_LOG_ERROR, "%s is not supported as output pixel format\n", 1174 av_get_pix_fmt_name(dstFormat)); 1175 return AVERROR(EINVAL); 1176 } 1177 } 1178 1179 i = flags & (SWS_POINT | 1180 SWS_AREA | 1181 SWS_BILINEAR | 1182 SWS_FAST_BILINEAR | 1183 SWS_BICUBIC | 1184 SWS_X | 1185 SWS_GAUSS | 1186 SWS_LANCZOS | 1187 SWS_SINC | 1188 SWS_SPLINE | 1189 SWS_BICUBLIN); 1190 1191 /* provide a default scaler if not set by caller */ 1192 if (!i) { 1193 if (dstW < srcW && dstH < srcH) 1194 flags |= SWS_BICUBIC; 1195 else if (dstW > srcW && dstH > srcH) 1196 flags |= SWS_BICUBIC; 1197 else 1198 flags |= SWS_BICUBIC; 1199 c->flags = flags; 1200 } else if (i & (i - 1)) { 1201 av_log(c, AV_LOG_ERROR, 1202 "Exactly one scaler algorithm must be chosen, got %X\n", i); 1203 return AVERROR(EINVAL); 1204 } 1205 /* sanity check */ 1206 if (srcW < 1 || srcH < 1 || dstW < 1 || dstH < 1) { 1207 /* FIXME check if these are enough and try to lower them after 1208 * fixing the relevant parts of the code */ 1209 av_log(c, AV_LOG_ERROR, "%dx%d -> %dx%d is invalid scaling dimension\n", 1210 srcW, srcH, dstW, dstH); 1211 return AVERROR(EINVAL); 1212 } 1213 1214 if (!dstFilter) 1215 dstFilter = &dummyFilter; 1216 if (!srcFilter) 1217 srcFilter = &dummyFilter; 1218 1219 c->lumXInc = (((int64_t)srcW << 16) + (dstW >> 1)) / dstW; 1220 c->lumYInc = (((int64_t)srcH << 16) + (dstH >> 1)) / dstH; 1221 c->dstFormatBpp = av_get_bits_per_pixel(desc_dst); 1222 c->srcFormatBpp = av_get_bits_per_pixel(desc_src); 1223 c->vRounder = 4 * 0x0001000100010001ULL; 1224 1225 usesVFilter = (srcFilter->lumV && srcFilter->lumV->length > 1) || 1226 (srcFilter->chrV && srcFilter->chrV->length > 1) || 1227 (dstFilter->lumV && dstFilter->lumV->length > 1) || 1228 (dstFilter->chrV && dstFilter->chrV->length > 1); 1229 usesHFilter = (srcFilter->lumH && srcFilter->lumH->length > 1) || 1230 (srcFilter->chrH && srcFilter->chrH->length > 1) || 1231 (dstFilter->lumH && dstFilter->lumH->length > 1) || 1232 (dstFilter->chrH && dstFilter->chrH->length > 1); 1233 1234 av_pix_fmt_get_chroma_sub_sample(srcFormat, &c->chrSrcHSubSample, &c->chrSrcVSubSample); 1235 av_pix_fmt_get_chroma_sub_sample(dstFormat, &c->chrDstHSubSample, &c->chrDstVSubSample); 1236 1237 if (isAnyRGB(dstFormat) && !(flags&SWS_FULL_CHR_H_INT)) { 1238 if (dstW&1) { 1239 av_log(c, AV_LOG_DEBUG, "Forcing full internal H chroma due to odd output size\n"); 1240 flags |= SWS_FULL_CHR_H_INT; 1241 c->flags = flags; 1242 } 1243 1244 if ( c->chrSrcHSubSample == 0 1245 && c->chrSrcVSubSample == 0 1246 && c->dither != SWS_DITHER_BAYER //SWS_FULL_CHR_H_INT is currently not supported with SWS_DITHER_BAYER 1247 && !(c->flags & SWS_FAST_BILINEAR) 1248 ) { 1249 av_log(c, AV_LOG_DEBUG, "Forcing full internal H chroma due to input having non subsampled chroma\n"); 1250 flags |= SWS_FULL_CHR_H_INT; 1251 c->flags = flags; 1252 } 1253 } 1254 1255 if (c->dither == SWS_DITHER_AUTO) { 1256 if (flags & SWS_ERROR_DIFFUSION) 1257 c->dither = SWS_DITHER_ED; 1258 } 1259 1260 if(dstFormat == AV_PIX_FMT_BGR4_BYTE || 1261 dstFormat == AV_PIX_FMT_RGB4_BYTE || 1262 dstFormat == AV_PIX_FMT_BGR8 || 1263 dstFormat == AV_PIX_FMT_RGB8) { 1264 if (c->dither == SWS_DITHER_AUTO) 1265 c->dither = (flags & SWS_FULL_CHR_H_INT) ? SWS_DITHER_ED : SWS_DITHER_BAYER; 1266 if (!(flags & SWS_FULL_CHR_H_INT)) { 1267 if (c->dither == SWS_DITHER_ED || c->dither == SWS_DITHER_A_DITHER || c->dither == SWS_DITHER_X_DITHER) { 1268 av_log(c, AV_LOG_DEBUG, 1269 "Desired dithering only supported in full chroma interpolation for destination format '%s'\n", 1270 av_get_pix_fmt_name(dstFormat)); 1271 flags |= SWS_FULL_CHR_H_INT; 1272 c->flags = flags; 1273 } 1274 } 1275 if (flags & SWS_FULL_CHR_H_INT) { 1276 if (c->dither == SWS_DITHER_BAYER) { 1277 av_log(c, AV_LOG_DEBUG, 1278 "Ordered dither is not supported in full chroma interpolation for destination format '%s'\n", 1279 av_get_pix_fmt_name(dstFormat)); 1280 c->dither = SWS_DITHER_ED; 1281 } 1282 } 1283 } 1284 if (isPlanarRGB(dstFormat)) { 1285 if (!(flags & SWS_FULL_CHR_H_INT)) { 1286 av_log(c, AV_LOG_DEBUG, 1287 "%s output is not supported with half chroma resolution, switching to full\n", 1288 av_get_pix_fmt_name(dstFormat)); 1289 flags |= SWS_FULL_CHR_H_INT; 1290 c->flags = flags; 1291 } 1292 } 1293 1294 /* reuse chroma for 2 pixels RGB/BGR unless user wants full 1295 * chroma interpolation */ 1296 if (flags & SWS_FULL_CHR_H_INT && 1297 isAnyRGB(dstFormat) && 1298 !isPlanarRGB(dstFormat) && 1299 dstFormat != AV_PIX_FMT_RGBA && 1300 dstFormat != AV_PIX_FMT_ARGB && 1301 dstFormat != AV_PIX_FMT_BGRA && 1302 dstFormat != AV_PIX_FMT_ABGR && 1303 dstFormat != AV_PIX_FMT_RGB24 && 1304 dstFormat != AV_PIX_FMT_BGR24 && 1305 dstFormat != AV_PIX_FMT_BGR4_BYTE && 1306 dstFormat != AV_PIX_FMT_RGB4_BYTE && 1307 dstFormat != AV_PIX_FMT_BGR8 && 1308 dstFormat != AV_PIX_FMT_RGB8 1309 ) { 1310 av_log(c, AV_LOG_WARNING, 1311 "full chroma interpolation for destination format '%s' not yet implemented\n", 1312 av_get_pix_fmt_name(dstFormat)); 1313 flags &= ~SWS_FULL_CHR_H_INT; 1314 c->flags = flags; 1315 } 1316 if (isAnyRGB(dstFormat) && !(flags & SWS_FULL_CHR_H_INT)) 1317 c->chrDstHSubSample = 1; 1318 1319 // drop some chroma lines if the user wants it 1320 c->vChrDrop = (flags & SWS_SRC_V_CHR_DROP_MASK) >> 1321 SWS_SRC_V_CHR_DROP_SHIFT; 1322 c->chrSrcVSubSample += c->vChrDrop; 1323 1324 /* drop every other pixel for chroma calculation unless user 1325 * wants full chroma */ 1326 if (isAnyRGB(srcFormat) && !(flags & SWS_FULL_CHR_H_INP) && 1327 srcFormat != AV_PIX_FMT_RGB8 && srcFormat != AV_PIX_FMT_BGR8 && 1328 srcFormat != AV_PIX_FMT_RGB4 && srcFormat != AV_PIX_FMT_BGR4 && 1329 srcFormat != AV_PIX_FMT_RGB4_BYTE && srcFormat != AV_PIX_FMT_BGR4_BYTE && 1330 srcFormat != AV_PIX_FMT_GBRP9BE && srcFormat != AV_PIX_FMT_GBRP9LE && 1331 srcFormat != AV_PIX_FMT_GBRP10BE && srcFormat != AV_PIX_FMT_GBRP10LE && 1332 srcFormat != AV_PIX_FMT_GBRP12BE && srcFormat != AV_PIX_FMT_GBRP12LE && 1333 srcFormat != AV_PIX_FMT_GBRP14BE && srcFormat != AV_PIX_FMT_GBRP14LE && 1334 srcFormat != AV_PIX_FMT_GBRP16BE && srcFormat != AV_PIX_FMT_GBRP16LE && 1335 ((dstW >> c->chrDstHSubSample) <= (srcW >> 1) || 1336 (flags & SWS_FAST_BILINEAR))) 1337 c->chrSrcHSubSample = 1; 1338 1339 // Note the FF_CEIL_RSHIFT is so that we always round toward +inf. 1340 c->chrSrcW = FF_CEIL_RSHIFT(srcW, c->chrSrcHSubSample); 1341 c->chrSrcH = FF_CEIL_RSHIFT(srcH, c->chrSrcVSubSample); 1342 c->chrDstW = FF_CEIL_RSHIFT(dstW, c->chrDstHSubSample); 1343 c->chrDstH = FF_CEIL_RSHIFT(dstH, c->chrDstVSubSample); 1344 1345 FF_ALLOC_OR_GOTO(c, c->formatConvBuffer, FFALIGN(srcW*2+78, 16) * 2, fail); 1346 1347 c->srcBpc = 1 + desc_src->comp[0].depth_minus1; 1348 if (c->srcBpc < 8) 1349 c->srcBpc = 8; 1350 c->dstBpc = 1 + desc_dst->comp[0].depth_minus1; 1351 if (c->dstBpc < 8) 1352 c->dstBpc = 8; 1353 if (isAnyRGB(srcFormat) || srcFormat == AV_PIX_FMT_PAL8) 1354 c->srcBpc = 16; 1355 if (c->dstBpc == 16) 1356 dst_stride <<= 1; 1357 1358 if (INLINE_MMXEXT(cpu_flags) && c->srcBpc == 8 && c->dstBpc <= 14) { 1359 c->canMMXEXTBeUsed = dstW >= srcW && (dstW & 31) == 0 && 1360 c->chrDstW >= c->chrSrcW && 1361 (srcW & 15) == 0; 1362 if (!c->canMMXEXTBeUsed && dstW >= srcW && c->chrDstW >= c->chrSrcW && (srcW & 15) == 0 1363 1364 && (flags & SWS_FAST_BILINEAR)) { 1365 if (flags & SWS_PRINT_INFO) 1366 av_log(c, AV_LOG_INFO, 1367 "output width is not a multiple of 32 -> no MMXEXT scaler\n"); 1368 } 1369 if (usesHFilter || isNBPS(c->srcFormat) || is16BPS(c->srcFormat) || isAnyRGB(c->srcFormat)) 1370 c->canMMXEXTBeUsed = 0; 1371 } else 1372 c->canMMXEXTBeUsed = 0; 1373 1374 c->chrXInc = (((int64_t)c->chrSrcW << 16) + (c->chrDstW >> 1)) / c->chrDstW; 1375 c->chrYInc = (((int64_t)c->chrSrcH << 16) + (c->chrDstH >> 1)) / c->chrDstH; 1376 1377 /* Match pixel 0 of the src to pixel 0 of dst and match pixel n-2 of src 1378 * to pixel n-2 of dst, but only for the FAST_BILINEAR mode otherwise do 1379 * correct scaling. 1380 * n-2 is the last chrominance sample available. 1381 * This is not perfect, but no one should notice the difference, the more 1382 * correct variant would be like the vertical one, but that would require 1383 * some special code for the first and last pixel */ 1384 if (flags & SWS_FAST_BILINEAR) { 1385 if (c->canMMXEXTBeUsed) { 1386 c->lumXInc += 20; 1387 c->chrXInc += 20; 1388 } 1389 // we don't use the x86 asm scaler if MMX is available 1390 else if (INLINE_MMX(cpu_flags) && c->dstBpc <= 14) { 1391 c->lumXInc = ((int64_t)(srcW - 2) << 16) / (dstW - 2) - 20; 1392 c->chrXInc = ((int64_t)(c->chrSrcW - 2) << 16) / (c->chrDstW - 2) - 20; 1393 } 1394 } 1395 1396#define USE_MMAP (HAVE_MMAP && HAVE_MPROTECT && defined MAP_ANONYMOUS) 1397 1398 /* precalculate horizontal scaler filter coefficients */ 1399 { 1400#if HAVE_MMXEXT_INLINE 1401// can't downscale !!! 1402 if (c->canMMXEXTBeUsed && (flags & SWS_FAST_BILINEAR)) { 1403 c->lumMmxextFilterCodeSize = init_hscaler_mmxext(dstW, c->lumXInc, NULL, 1404 NULL, NULL, 8); 1405 c->chrMmxextFilterCodeSize = init_hscaler_mmxext(c->chrDstW, c->chrXInc, 1406 NULL, NULL, NULL, 4); 1407 1408#if USE_MMAP 1409 c->lumMmxextFilterCode = mmap(NULL, c->lumMmxextFilterCodeSize, 1410 PROT_READ | PROT_WRITE, 1411 MAP_PRIVATE | MAP_ANONYMOUS, 1412 -1, 0); 1413 c->chrMmxextFilterCode = mmap(NULL, c->chrMmxextFilterCodeSize, 1414 PROT_READ | PROT_WRITE, 1415 MAP_PRIVATE | MAP_ANONYMOUS, 1416 -1, 0); 1417#elif HAVE_VIRTUALALLOC 1418 c->lumMmxextFilterCode = VirtualAlloc(NULL, 1419 c->lumMmxextFilterCodeSize, 1420 MEM_COMMIT, 1421 PAGE_EXECUTE_READWRITE); 1422 c->chrMmxextFilterCode = VirtualAlloc(NULL, 1423 c->chrMmxextFilterCodeSize, 1424 MEM_COMMIT, 1425 PAGE_EXECUTE_READWRITE); 1426#else 1427 c->lumMmxextFilterCode = av_malloc(c->lumMmxextFilterCodeSize); 1428 c->chrMmxextFilterCode = av_malloc(c->chrMmxextFilterCodeSize); 1429#endif 1430 1431#ifdef MAP_ANONYMOUS 1432 if (c->lumMmxextFilterCode == MAP_FAILED || c->chrMmxextFilterCode == MAP_FAILED) 1433#else 1434 if (!c->lumMmxextFilterCode || !c->chrMmxextFilterCode) 1435#endif 1436 { 1437 av_log(c, AV_LOG_ERROR, "Failed to allocate MMX2FilterCode\n"); 1438 return AVERROR(ENOMEM); 1439 } 1440 1441 FF_ALLOCZ_OR_GOTO(c, c->hLumFilter, (dstW / 8 + 8) * sizeof(int16_t), fail); 1442 FF_ALLOCZ_OR_GOTO(c, c->hChrFilter, (c->chrDstW / 4 + 8) * sizeof(int16_t), fail); 1443 FF_ALLOCZ_OR_GOTO(c, c->hLumFilterPos, (dstW / 2 / 8 + 8) * sizeof(int32_t), fail); 1444 FF_ALLOCZ_OR_GOTO(c, c->hChrFilterPos, (c->chrDstW / 2 / 4 + 8) * sizeof(int32_t), fail); 1445 1446 init_hscaler_mmxext( dstW, c->lumXInc, c->lumMmxextFilterCode, 1447 c->hLumFilter, (uint32_t*)c->hLumFilterPos, 8); 1448 init_hscaler_mmxext(c->chrDstW, c->chrXInc, c->chrMmxextFilterCode, 1449 c->hChrFilter, (uint32_t*)c->hChrFilterPos, 4); 1450 1451#if USE_MMAP 1452 if ( mprotect(c->lumMmxextFilterCode, c->lumMmxextFilterCodeSize, PROT_EXEC | PROT_READ) == -1 1453 || mprotect(c->chrMmxextFilterCode, c->chrMmxextFilterCodeSize, PROT_EXEC | PROT_READ) == -1) { 1454 av_log(c, AV_LOG_ERROR, "mprotect failed, cannot use fast bilinear scaler\n"); 1455 goto fail; 1456 } 1457#endif 1458 } else 1459#endif /* HAVE_MMXEXT_INLINE */ 1460 { 1461 const int filterAlign = X86_MMX(cpu_flags) ? 4 : 1462 PPC_ALTIVEC(cpu_flags) ? 8 : 1; 1463 1464 if (initFilter(&c->hLumFilter, &c->hLumFilterPos, 1465 &c->hLumFilterSize, c->lumXInc, 1466 srcW, dstW, filterAlign, 1 << 14, 1467 (flags & SWS_BICUBLIN) ? (flags | SWS_BICUBIC) : flags, 1468 cpu_flags, srcFilter->lumH, dstFilter->lumH, 1469 c->param, 1470 get_local_pos(c, 0, 0, 0), 1471 get_local_pos(c, 0, 0, 0)) < 0) 1472 goto fail; 1473 if (initFilter(&c->hChrFilter, &c->hChrFilterPos, 1474 &c->hChrFilterSize, c->chrXInc, 1475 c->chrSrcW, c->chrDstW, filterAlign, 1 << 14, 1476 (flags & SWS_BICUBLIN) ? (flags | SWS_BILINEAR) : flags, 1477 cpu_flags, srcFilter->chrH, dstFilter->chrH, 1478 c->param, 1479 get_local_pos(c, c->chrSrcHSubSample, c->src_h_chr_pos, 0), 1480 get_local_pos(c, c->chrDstHSubSample, c->dst_h_chr_pos, 0)) < 0) 1481 goto fail; 1482 } 1483 } // initialize horizontal stuff 1484 1485 /* precalculate vertical scaler filter coefficients */ 1486 { 1487 const int filterAlign = X86_MMX(cpu_flags) ? 2 : 1488 PPC_ALTIVEC(cpu_flags) ? 8 : 1; 1489 1490 if (initFilter(&c->vLumFilter, &c->vLumFilterPos, &c->vLumFilterSize, 1491 c->lumYInc, srcH, dstH, filterAlign, (1 << 12), 1492 (flags & SWS_BICUBLIN) ? (flags | SWS_BICUBIC) : flags, 1493 cpu_flags, srcFilter->lumV, dstFilter->lumV, 1494 c->param, 1495 get_local_pos(c, 0, 0, 1), 1496 get_local_pos(c, 0, 0, 1)) < 0) 1497 goto fail; 1498 if (initFilter(&c->vChrFilter, &c->vChrFilterPos, &c->vChrFilterSize, 1499 c->chrYInc, c->chrSrcH, c->chrDstH, 1500 filterAlign, (1 << 12), 1501 (flags & SWS_BICUBLIN) ? (flags | SWS_BILINEAR) : flags, 1502 cpu_flags, srcFilter->chrV, dstFilter->chrV, 1503 c->param, 1504 get_local_pos(c, c->chrSrcVSubSample, c->src_v_chr_pos, 1), 1505 get_local_pos(c, c->chrDstVSubSample, c->dst_v_chr_pos, 1)) < 0) 1506 1507 goto fail; 1508 1509#if HAVE_ALTIVEC 1510 FF_ALLOC_OR_GOTO(c, c->vYCoeffsBank, sizeof(vector signed short) * c->vLumFilterSize * c->dstH, fail); 1511 FF_ALLOC_OR_GOTO(c, c->vCCoeffsBank, sizeof(vector signed short) * c->vChrFilterSize * c->chrDstH, fail); 1512 1513 for (i = 0; i < c->vLumFilterSize * c->dstH; i++) { 1514 int j; 1515 short *p = (short *)&c->vYCoeffsBank[i]; 1516 for (j = 0; j < 8; j++) 1517 p[j] = c->vLumFilter[i]; 1518 } 1519 1520 for (i = 0; i < c->vChrFilterSize * c->chrDstH; i++) { 1521 int j; 1522 short *p = (short *)&c->vCCoeffsBank[i]; 1523 for (j = 0; j < 8; j++) 1524 p[j] = c->vChrFilter[i]; 1525 } 1526#endif 1527 } 1528 1529 // calculate buffer sizes so that they won't run out while handling these damn slices 1530 c->vLumBufSize = c->vLumFilterSize; 1531 c->vChrBufSize = c->vChrFilterSize; 1532 for (i = 0; i < dstH; i++) { 1533 int chrI = (int64_t)i * c->chrDstH / dstH; 1534 int nextSlice = FFMAX(c->vLumFilterPos[i] + c->vLumFilterSize - 1, 1535 ((c->vChrFilterPos[chrI] + c->vChrFilterSize - 1) 1536 << c->chrSrcVSubSample)); 1537 1538 nextSlice >>= c->chrSrcVSubSample; 1539 nextSlice <<= c->chrSrcVSubSample; 1540 if (c->vLumFilterPos[i] + c->vLumBufSize < nextSlice) 1541 c->vLumBufSize = nextSlice - c->vLumFilterPos[i]; 1542 if (c->vChrFilterPos[chrI] + c->vChrBufSize < 1543 (nextSlice >> c->chrSrcVSubSample)) 1544 c->vChrBufSize = (nextSlice >> c->chrSrcVSubSample) - 1545 c->vChrFilterPos[chrI]; 1546 } 1547 1548 for (i = 0; i < 4; i++) 1549 FF_ALLOCZ_OR_GOTO(c, c->dither_error[i], (c->dstW+2) * sizeof(int), fail); 1550 1551 /* Allocate pixbufs (we use dynamic allocation because otherwise we would 1552 * need to allocate several megabytes to handle all possible cases) */ 1553 FF_ALLOC_OR_GOTO(c, c->lumPixBuf, c->vLumBufSize * 3 * sizeof(int16_t *), fail); 1554 FF_ALLOC_OR_GOTO(c, c->chrUPixBuf, c->vChrBufSize * 3 * sizeof(int16_t *), fail); 1555 FF_ALLOC_OR_GOTO(c, c->chrVPixBuf, c->vChrBufSize * 3 * sizeof(int16_t *), fail); 1556 if (CONFIG_SWSCALE_ALPHA && isALPHA(c->srcFormat) && isALPHA(c->dstFormat)) 1557 FF_ALLOCZ_OR_GOTO(c, c->alpPixBuf, c->vLumBufSize * 3 * sizeof(int16_t *), fail); 1558 /* Note we need at least one pixel more at the end because of the MMX code 1559 * (just in case someone wants to replace the 4000/8000). */ 1560 /* align at 16 bytes for AltiVec */ 1561 for (i = 0; i < c->vLumBufSize; i++) { 1562 FF_ALLOCZ_OR_GOTO(c, c->lumPixBuf[i + c->vLumBufSize], 1563 dst_stride + 16, fail); 1564 c->lumPixBuf[i] = c->lumPixBuf[i + c->vLumBufSize]; 1565 } 1566 // 64 / c->scalingBpp is the same as 16 / sizeof(scaling_intermediate) 1567 c->uv_off = (dst_stride>>1) + 64 / (c->dstBpc &~ 7); 1568 c->uv_offx2 = dst_stride + 16; 1569 for (i = 0; i < c->vChrBufSize; i++) { 1570 FF_ALLOC_OR_GOTO(c, c->chrUPixBuf[i + c->vChrBufSize], 1571 dst_stride * 2 + 32, fail); 1572 c->chrUPixBuf[i] = c->chrUPixBuf[i + c->vChrBufSize]; 1573 c->chrVPixBuf[i] = c->chrVPixBuf[i + c->vChrBufSize] 1574 = c->chrUPixBuf[i] + (dst_stride >> 1) + 8; 1575 } 1576 if (CONFIG_SWSCALE_ALPHA && c->alpPixBuf) 1577 for (i = 0; i < c->vLumBufSize; i++) { 1578 FF_ALLOCZ_OR_GOTO(c, c->alpPixBuf[i + c->vLumBufSize], 1579 dst_stride + 16, fail); 1580 c->alpPixBuf[i] = c->alpPixBuf[i + c->vLumBufSize]; 1581 } 1582 1583 // try to avoid drawing green stuff between the right end and the stride end 1584 for (i = 0; i < c->vChrBufSize; i++) 1585 if(desc_dst->comp[0].depth_minus1 == 15){ 1586 av_assert0(c->dstBpc > 14); 1587 for(j=0; j<dst_stride/2+1; j++) 1588 ((int32_t*)(c->chrUPixBuf[i]))[j] = 1<<18; 1589 } else 1590 for(j=0; j<dst_stride+1; j++) 1591 ((int16_t*)(c->chrUPixBuf[i]))[j] = 1<<14; 1592 1593 av_assert0(c->chrDstH <= dstH); 1594 1595 if (flags & SWS_PRINT_INFO) { 1596 const char *scaler = NULL, *cpucaps; 1597 1598 for (i = 0; i < FF_ARRAY_ELEMS(scale_algorithms); i++) { 1599 if (flags & scale_algorithms[i].flag) { 1600 scaler = scale_algorithms[i].description; 1601 break; 1602 } 1603 } 1604 if (!scaler) 1605 scaler = "ehh flags invalid?!"; 1606 av_log(c, AV_LOG_INFO, "%s scaler, from %s to %s%s ", 1607 scaler, 1608 av_get_pix_fmt_name(srcFormat), 1609#ifdef DITHER1XBPP 1610 dstFormat == AV_PIX_FMT_BGR555 || dstFormat == AV_PIX_FMT_BGR565 || 1611 dstFormat == AV_PIX_FMT_RGB444BE || dstFormat == AV_PIX_FMT_RGB444LE || 1612 dstFormat == AV_PIX_FMT_BGR444BE || dstFormat == AV_PIX_FMT_BGR444LE ? 1613 "dithered " : "", 1614#else 1615 "", 1616#endif 1617 av_get_pix_fmt_name(dstFormat)); 1618 1619 if (INLINE_MMXEXT(cpu_flags)) 1620 cpucaps = "MMXEXT"; 1621 else if (INLINE_AMD3DNOW(cpu_flags)) 1622 cpucaps = "3DNOW"; 1623 else if (INLINE_MMX(cpu_flags)) 1624 cpucaps = "MMX"; 1625 else if (PPC_ALTIVEC(cpu_flags)) 1626 cpucaps = "AltiVec"; 1627 else 1628 cpucaps = "C"; 1629 1630 av_log(c, AV_LOG_INFO, "using %s\n", cpucaps); 1631 1632 av_log(c, AV_LOG_VERBOSE, "%dx%d -> %dx%d\n", srcW, srcH, dstW, dstH); 1633 av_log(c, AV_LOG_DEBUG, 1634 "lum srcW=%d srcH=%d dstW=%d dstH=%d xInc=%d yInc=%d\n", 1635 c->srcW, c->srcH, c->dstW, c->dstH, c->lumXInc, c->lumYInc); 1636 av_log(c, AV_LOG_DEBUG, 1637 "chr srcW=%d srcH=%d dstW=%d dstH=%d xInc=%d yInc=%d\n", 1638 c->chrSrcW, c->chrSrcH, c->chrDstW, c->chrDstH, 1639 c->chrXInc, c->chrYInc); 1640 } 1641 1642 /* unscaled special cases */ 1643 if (unscaled && !usesHFilter && !usesVFilter && 1644 (c->srcRange == c->dstRange || isAnyRGB(dstFormat))) { 1645 ff_get_unscaled_swscale(c); 1646 1647 if (c->swscale) { 1648 if (flags & SWS_PRINT_INFO) 1649 av_log(c, AV_LOG_INFO, 1650 "using unscaled %s -> %s special converter\n", 1651 av_get_pix_fmt_name(srcFormat), av_get_pix_fmt_name(dstFormat)); 1652 return 0; 1653 } 1654 } 1655 1656 c->swscale = ff_getSwsFunc(c); 1657 return 0; 1658fail: // FIXME replace things by appropriate error codes 1659 return -1; 1660} 1661 1662#if FF_API_SWS_GETCONTEXT 1663SwsContext *sws_getContext(int srcW, int srcH, enum AVPixelFormat srcFormat, 1664 int dstW, int dstH, enum AVPixelFormat dstFormat, 1665 int flags, SwsFilter *srcFilter, 1666 SwsFilter *dstFilter, const double *param) 1667{ 1668 SwsContext *c; 1669 1670 if (!(c = sws_alloc_context())) 1671 return NULL; 1672 1673 c->flags = flags; 1674 c->srcW = srcW; 1675 c->srcH = srcH; 1676 c->dstW = dstW; 1677 c->dstH = dstH; 1678 c->srcFormat = srcFormat; 1679 c->dstFormat = dstFormat; 1680 1681 if (param) { 1682 c->param[0] = param[0]; 1683 c->param[1] = param[1]; 1684 } 1685 1686 if (sws_init_context(c, srcFilter, dstFilter) < 0) { 1687 sws_freeContext(c); 1688 return NULL; 1689 } 1690 1691 return c; 1692} 1693#endif 1694 1695SwsFilter *sws_getDefaultFilter(float lumaGBlur, float chromaGBlur, 1696 float lumaSharpen, float chromaSharpen, 1697 float chromaHShift, float chromaVShift, 1698 int verbose) 1699{ 1700 SwsFilter *filter = av_malloc(sizeof(SwsFilter)); 1701 if (!filter) 1702 return NULL; 1703 1704 if (lumaGBlur != 0.0) { 1705 filter->lumH = sws_getGaussianVec(lumaGBlur, 3.0); 1706 filter->lumV = sws_getGaussianVec(lumaGBlur, 3.0); 1707 } else { 1708 filter->lumH = sws_getIdentityVec(); 1709 filter->lumV = sws_getIdentityVec(); 1710 } 1711 1712 if (chromaGBlur != 0.0) { 1713 filter->chrH = sws_getGaussianVec(chromaGBlur, 3.0); 1714 filter->chrV = sws_getGaussianVec(chromaGBlur, 3.0); 1715 } else { 1716 filter->chrH = sws_getIdentityVec(); 1717 filter->chrV = sws_getIdentityVec(); 1718 } 1719 1720 if (chromaSharpen != 0.0) { 1721 SwsVector *id = sws_getIdentityVec(); 1722 sws_scaleVec(filter->chrH, -chromaSharpen); 1723 sws_scaleVec(filter->chrV, -chromaSharpen); 1724 sws_addVec(filter->chrH, id); 1725 sws_addVec(filter->chrV, id); 1726 sws_freeVec(id); 1727 } 1728 1729 if (lumaSharpen != 0.0) { 1730 SwsVector *id = sws_getIdentityVec(); 1731 sws_scaleVec(filter->lumH, -lumaSharpen); 1732 sws_scaleVec(filter->lumV, -lumaSharpen); 1733 sws_addVec(filter->lumH, id); 1734 sws_addVec(filter->lumV, id); 1735 sws_freeVec(id); 1736 } 1737 1738 if (chromaHShift != 0.0) 1739 sws_shiftVec(filter->chrH, (int)(chromaHShift + 0.5)); 1740 1741 if (chromaVShift != 0.0) 1742 sws_shiftVec(filter->chrV, (int)(chromaVShift + 0.5)); 1743 1744 sws_normalizeVec(filter->chrH, 1.0); 1745 sws_normalizeVec(filter->chrV, 1.0); 1746 sws_normalizeVec(filter->lumH, 1.0); 1747 sws_normalizeVec(filter->lumV, 1.0); 1748 1749 if (verbose) 1750 sws_printVec2(filter->chrH, NULL, AV_LOG_DEBUG); 1751 if (verbose) 1752 sws_printVec2(filter->lumH, NULL, AV_LOG_DEBUG); 1753 1754 return filter; 1755} 1756 1757SwsVector *sws_allocVec(int length) 1758{ 1759 SwsVector *vec; 1760 1761 if(length <= 0 || length > INT_MAX/ sizeof(double)) 1762 return NULL; 1763 1764 vec = av_malloc(sizeof(SwsVector)); 1765 if (!vec) 1766 return NULL; 1767 vec->length = length; 1768 vec->coeff = av_malloc(sizeof(double) * length); 1769 if (!vec->coeff) 1770 av_freep(&vec); 1771 return vec; 1772} 1773 1774SwsVector *sws_getGaussianVec(double variance, double quality) 1775{ 1776 const int length = (int)(variance * quality + 0.5) | 1; 1777 int i; 1778 double middle = (length - 1) * 0.5; 1779 SwsVector *vec; 1780 1781 if(variance < 0 || quality < 0) 1782 return NULL; 1783 1784 vec = sws_allocVec(length); 1785 1786 if (!vec) 1787 return NULL; 1788 1789 for (i = 0; i < length; i++) { 1790 double dist = i - middle; 1791 vec->coeff[i] = exp(-dist * dist / (2 * variance * variance)) / 1792 sqrt(2 * variance * M_PI); 1793 } 1794 1795 sws_normalizeVec(vec, 1.0); 1796 1797 return vec; 1798} 1799 1800SwsVector *sws_getConstVec(double c, int length) 1801{ 1802 int i; 1803 SwsVector *vec = sws_allocVec(length); 1804 1805 if (!vec) 1806 return NULL; 1807 1808 for (i = 0; i < length; i++) 1809 vec->coeff[i] = c; 1810 1811 return vec; 1812} 1813 1814SwsVector *sws_getIdentityVec(void) 1815{ 1816 return sws_getConstVec(1.0, 1); 1817} 1818 1819static double sws_dcVec(SwsVector *a) 1820{ 1821 int i; 1822 double sum = 0; 1823 1824 for (i = 0; i < a->length; i++) 1825 sum += a->coeff[i]; 1826 1827 return sum; 1828} 1829 1830void sws_scaleVec(SwsVector *a, double scalar) 1831{ 1832 int i; 1833 1834 for (i = 0; i < a->length; i++) 1835 a->coeff[i] *= scalar; 1836} 1837 1838void sws_normalizeVec(SwsVector *a, double height) 1839{ 1840 sws_scaleVec(a, height / sws_dcVec(a)); 1841} 1842 1843static SwsVector *sws_getConvVec(SwsVector *a, SwsVector *b) 1844{ 1845 int length = a->length + b->length - 1; 1846 int i, j; 1847 SwsVector *vec = sws_getConstVec(0.0, length); 1848 1849 if (!vec) 1850 return NULL; 1851 1852 for (i = 0; i < a->length; i++) { 1853 for (j = 0; j < b->length; j++) { 1854 vec->coeff[i + j] += a->coeff[i] * b->coeff[j]; 1855 } 1856 } 1857 1858 return vec; 1859} 1860 1861static SwsVector *sws_sumVec(SwsVector *a, SwsVector *b) 1862{ 1863 int length = FFMAX(a->length, b->length); 1864 int i; 1865 SwsVector *vec = sws_getConstVec(0.0, length); 1866 1867 if (!vec) 1868 return NULL; 1869 1870 for (i = 0; i < a->length; i++) 1871 vec->coeff[i + (length - 1) / 2 - (a->length - 1) / 2] += a->coeff[i]; 1872 for (i = 0; i < b->length; i++) 1873 vec->coeff[i + (length - 1) / 2 - (b->length - 1) / 2] += b->coeff[i]; 1874 1875 return vec; 1876} 1877 1878static SwsVector *sws_diffVec(SwsVector *a, SwsVector *b) 1879{ 1880 int length = FFMAX(a->length, b->length); 1881 int i; 1882 SwsVector *vec = sws_getConstVec(0.0, length); 1883 1884 if (!vec) 1885 return NULL; 1886 1887 for (i = 0; i < a->length; i++) 1888 vec->coeff[i + (length - 1) / 2 - (a->length - 1) / 2] += a->coeff[i]; 1889 for (i = 0; i < b->length; i++) 1890 vec->coeff[i + (length - 1) / 2 - (b->length - 1) / 2] -= b->coeff[i]; 1891 1892 return vec; 1893} 1894 1895/* shift left / or right if "shift" is negative */ 1896static SwsVector *sws_getShiftedVec(SwsVector *a, int shift) 1897{ 1898 int length = a->length + FFABS(shift) * 2; 1899 int i; 1900 SwsVector *vec = sws_getConstVec(0.0, length); 1901 1902 if (!vec) 1903 return NULL; 1904 1905 for (i = 0; i < a->length; i++) { 1906 vec->coeff[i + (length - 1) / 2 - 1907 (a->length - 1) / 2 - shift] = a->coeff[i]; 1908 } 1909 1910 return vec; 1911} 1912 1913void sws_shiftVec(SwsVector *a, int shift) 1914{ 1915 SwsVector *shifted = sws_getShiftedVec(a, shift); 1916 av_free(a->coeff); 1917 a->coeff = shifted->coeff; 1918 a->length = shifted->length; 1919 av_free(shifted); 1920} 1921 1922void sws_addVec(SwsVector *a, SwsVector *b) 1923{ 1924 SwsVector *sum = sws_sumVec(a, b); 1925 av_free(a->coeff); 1926 a->coeff = sum->coeff; 1927 a->length = sum->length; 1928 av_free(sum); 1929} 1930 1931void sws_subVec(SwsVector *a, SwsVector *b) 1932{ 1933 SwsVector *diff = sws_diffVec(a, b); 1934 av_free(a->coeff); 1935 a->coeff = diff->coeff; 1936 a->length = diff->length; 1937 av_free(diff); 1938} 1939 1940void sws_convVec(SwsVector *a, SwsVector *b) 1941{ 1942 SwsVector *conv = sws_getConvVec(a, b); 1943 av_free(a->coeff); 1944 a->coeff = conv->coeff; 1945 a->length = conv->length; 1946 av_free(conv); 1947} 1948 1949SwsVector *sws_cloneVec(SwsVector *a) 1950{ 1951 SwsVector *vec = sws_allocVec(a->length); 1952 1953 if (!vec) 1954 return NULL; 1955 1956 memcpy(vec->coeff, a->coeff, a->length * sizeof(*a->coeff)); 1957 1958 return vec; 1959} 1960 1961void sws_printVec2(SwsVector *a, AVClass *log_ctx, int log_level) 1962{ 1963 int i; 1964 double max = 0; 1965 double min = 0; 1966 double range; 1967 1968 for (i = 0; i < a->length; i++) 1969 if (a->coeff[i] > max) 1970 max = a->coeff[i]; 1971 1972 for (i = 0; i < a->length; i++) 1973 if (a->coeff[i] < min) 1974 min = a->coeff[i]; 1975 1976 range = max - min; 1977 1978 for (i = 0; i < a->length; i++) { 1979 int x = (int)((a->coeff[i] - min) * 60.0 / range + 0.5); 1980 av_log(log_ctx, log_level, "%1.3f ", a->coeff[i]); 1981 for (; x > 0; x--) 1982 av_log(log_ctx, log_level, " "); 1983 av_log(log_ctx, log_level, "|\n"); 1984 } 1985} 1986 1987void sws_freeVec(SwsVector *a) 1988{ 1989 if (!a) 1990 return; 1991 av_freep(&a->coeff); 1992 a->length = 0; 1993 av_free(a); 1994} 1995 1996void sws_freeFilter(SwsFilter *filter) 1997{ 1998 if (!filter) 1999 return; 2000 2001 sws_freeVec(filter->lumH); 2002 sws_freeVec(filter->lumV); 2003 sws_freeVec(filter->chrH); 2004 sws_freeVec(filter->chrV); 2005 av_free(filter); 2006} 2007 2008void sws_freeContext(SwsContext *c) 2009{ 2010 int i; 2011 if (!c) 2012 return; 2013 2014 if (c->lumPixBuf) { 2015 for (i = 0; i < c->vLumBufSize; i++) 2016 av_freep(&c->lumPixBuf[i]); 2017 av_freep(&c->lumPixBuf); 2018 } 2019 2020 if (c->chrUPixBuf) { 2021 for (i = 0; i < c->vChrBufSize; i++) 2022 av_freep(&c->chrUPixBuf[i]); 2023 av_freep(&c->chrUPixBuf); 2024 av_freep(&c->chrVPixBuf); 2025 } 2026 2027 if (CONFIG_SWSCALE_ALPHA && c->alpPixBuf) { 2028 for (i = 0; i < c->vLumBufSize; i++) 2029 av_freep(&c->alpPixBuf[i]); 2030 av_freep(&c->alpPixBuf); 2031 } 2032 2033 for (i = 0; i < 4; i++) 2034 av_freep(&c->dither_error[i]); 2035 2036 av_freep(&c->vLumFilter); 2037 av_freep(&c->vChrFilter); 2038 av_freep(&c->hLumFilter); 2039 av_freep(&c->hChrFilter); 2040#if HAVE_ALTIVEC 2041 av_freep(&c->vYCoeffsBank); 2042 av_freep(&c->vCCoeffsBank); 2043#endif 2044 2045 av_freep(&c->vLumFilterPos); 2046 av_freep(&c->vChrFilterPos); 2047 av_freep(&c->hLumFilterPos); 2048 av_freep(&c->hChrFilterPos); 2049 2050#if HAVE_MMX_INLINE 2051#if USE_MMAP 2052 if (c->lumMmxextFilterCode) 2053 munmap(c->lumMmxextFilterCode, c->lumMmxextFilterCodeSize); 2054 if (c->chrMmxextFilterCode) 2055 munmap(c->chrMmxextFilterCode, c->chrMmxextFilterCodeSize); 2056#elif HAVE_VIRTUALALLOC 2057 if (c->lumMmxextFilterCode) 2058 VirtualFree(c->lumMmxextFilterCode, 0, MEM_RELEASE); 2059 if (c->chrMmxextFilterCode) 2060 VirtualFree(c->chrMmxextFilterCode, 0, MEM_RELEASE); 2061#else 2062 av_free(c->lumMmxextFilterCode); 2063 av_free(c->chrMmxextFilterCode); 2064#endif 2065 c->lumMmxextFilterCode = NULL; 2066 c->chrMmxextFilterCode = NULL; 2067#endif /* HAVE_MMX_INLINE */ 2068 2069 av_freep(&c->yuvTable); 2070 av_freep(&c->formatConvBuffer); 2071 2072 av_free(c); 2073} 2074 2075struct SwsContext *sws_getCachedContext(struct SwsContext *context, int srcW, 2076 int srcH, enum AVPixelFormat srcFormat, 2077 int dstW, int dstH, 2078 enum AVPixelFormat dstFormat, int flags, 2079 SwsFilter *srcFilter, 2080 SwsFilter *dstFilter, 2081 const double *param) 2082{ 2083 static const double default_param[2] = { SWS_PARAM_DEFAULT, 2084 SWS_PARAM_DEFAULT }; 2085 2086 if (!param) 2087 param = default_param; 2088 2089 if (context && 2090 (context->srcW != srcW || 2091 context->srcH != srcH || 2092 context->srcFormat != srcFormat || 2093 context->dstW != dstW || 2094 context->dstH != dstH || 2095 context->dstFormat != dstFormat || 2096 context->flags != flags || 2097 context->param[0] != param[0] || 2098 context->param[1] != param[1])) { 2099 sws_freeContext(context); 2100 context = NULL; 2101 } 2102 2103 if (!context) { 2104 if (!(context = sws_alloc_context())) 2105 return NULL; 2106 context->srcW = srcW; 2107 context->srcH = srcH; 2108 context->srcFormat = srcFormat; 2109 context->dstW = dstW; 2110 context->dstH = dstH; 2111 context->dstFormat = dstFormat; 2112 context->flags = flags; 2113 context->param[0] = param[0]; 2114 context->param[1] = param[1]; 2115 if (sws_init_context(context, srcFilter, dstFilter) < 0) { 2116 sws_freeContext(context); 2117 return NULL; 2118 } 2119 } 2120 return context; 2121} 2122