| 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/imgutils.h" |
| 46 | #include "libavutil/intreadwrite.h" |
| 47 | #include "libavutil/mathematics.h" |
| 48 | #include "libavutil/opt.h" |
| 49 | #include "libavutil/pixdesc.h" |
| 50 | #include "libavutil/ppc/cpu.h" |
| 51 | #include "libavutil/x86/asm.h" |
| 52 | #include "libavutil/x86/cpu.h" |
| 53 | #include "rgb2rgb.h" |
| 54 | #include "swscale.h" |
| 55 | #include "swscale_internal.h" |
| 56 | |
| 57 | static void handle_formats(SwsContext *c); |
| 58 | |
| 59 | unsigned swscale_version(void) |
| 60 | { |
| 61 | av_assert0(LIBSWSCALE_VERSION_MICRO >= 100); |
| 62 | return LIBSWSCALE_VERSION_INT; |
| 63 | } |
| 64 | |
| 65 | const char *swscale_configuration(void) |
| 66 | { |
| 67 | return FFMPEG_CONFIGURATION; |
| 68 | } |
| 69 | |
| 70 | const char *swscale_license(void) |
| 71 | { |
| 72 | #define LICENSE_PREFIX "libswscale license: " |
| 73 | return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1; |
| 74 | } |
| 75 | |
| 76 | typedef struct FormatEntry { |
| 77 | uint8_t is_supported_in :1; |
| 78 | uint8_t is_supported_out :1; |
| 79 | uint8_t is_supported_endianness :1; |
| 80 | } FormatEntry; |
| 81 | |
| 82 | static const FormatEntry format_entries[AV_PIX_FMT_NB] = { |
| 83 | [AV_PIX_FMT_YUV420P] = { 1, 1 }, |
| 84 | [AV_PIX_FMT_YUYV422] = { 1, 1 }, |
| 85 | [AV_PIX_FMT_RGB24] = { 1, 1 }, |
| 86 | [AV_PIX_FMT_BGR24] = { 1, 1 }, |
| 87 | [AV_PIX_FMT_YUV422P] = { 1, 1 }, |
| 88 | [AV_PIX_FMT_YUV444P] = { 1, 1 }, |
| 89 | [AV_PIX_FMT_YUV410P] = { 1, 1 }, |
| 90 | [AV_PIX_FMT_YUV411P] = { 1, 1 }, |
| 91 | [AV_PIX_FMT_GRAY8] = { 1, 1 }, |
| 92 | [AV_PIX_FMT_MONOWHITE] = { 1, 1 }, |
| 93 | [AV_PIX_FMT_MONOBLACK] = { 1, 1 }, |
| 94 | [AV_PIX_FMT_PAL8] = { 1, 0 }, |
| 95 | [AV_PIX_FMT_YUVJ420P] = { 1, 1 }, |
| 96 | [AV_PIX_FMT_YUVJ411P] = { 1, 1 }, |
| 97 | [AV_PIX_FMT_YUVJ422P] = { 1, 1 }, |
| 98 | [AV_PIX_FMT_YUVJ444P] = { 1, 1 }, |
| 99 | [AV_PIX_FMT_YVYU422] = { 1, 1 }, |
| 100 | [AV_PIX_FMT_UYVY422] = { 1, 1 }, |
| 101 | [AV_PIX_FMT_UYYVYY411] = { 0, 0 }, |
| 102 | [AV_PIX_FMT_BGR8] = { 1, 1 }, |
| 103 | [AV_PIX_FMT_BGR4] = { 0, 1 }, |
| 104 | [AV_PIX_FMT_BGR4_BYTE] = { 1, 1 }, |
| 105 | [AV_PIX_FMT_RGB8] = { 1, 1 }, |
| 106 | [AV_PIX_FMT_RGB4] = { 0, 1 }, |
| 107 | [AV_PIX_FMT_RGB4_BYTE] = { 1, 1 }, |
| 108 | [AV_PIX_FMT_NV12] = { 1, 1 }, |
| 109 | [AV_PIX_FMT_NV21] = { 1, 1 }, |
| 110 | [AV_PIX_FMT_ARGB] = { 1, 1 }, |
| 111 | [AV_PIX_FMT_RGBA] = { 1, 1 }, |
| 112 | [AV_PIX_FMT_ABGR] = { 1, 1 }, |
| 113 | [AV_PIX_FMT_BGRA] = { 1, 1 }, |
| 114 | [AV_PIX_FMT_0RGB] = { 1, 1 }, |
| 115 | [AV_PIX_FMT_RGB0] = { 1, 1 }, |
| 116 | [AV_PIX_FMT_0BGR] = { 1, 1 }, |
| 117 | [AV_PIX_FMT_BGR0] = { 1, 1 }, |
| 118 | [AV_PIX_FMT_GRAY16BE] = { 1, 1 }, |
| 119 | [AV_PIX_FMT_GRAY16LE] = { 1, 1 }, |
| 120 | [AV_PIX_FMT_YUV440P] = { 1, 1 }, |
| 121 | [AV_PIX_FMT_YUVJ440P] = { 1, 1 }, |
| 122 | [AV_PIX_FMT_YUVA420P] = { 1, 1 }, |
| 123 | [AV_PIX_FMT_YUVA422P] = { 1, 1 }, |
| 124 | [AV_PIX_FMT_YUVA444P] = { 1, 1 }, |
| 125 | [AV_PIX_FMT_YUVA420P9BE] = { 1, 1 }, |
| 126 | [AV_PIX_FMT_YUVA420P9LE] = { 1, 1 }, |
| 127 | [AV_PIX_FMT_YUVA422P9BE] = { 1, 1 }, |
| 128 | [AV_PIX_FMT_YUVA422P9LE] = { 1, 1 }, |
| 129 | [AV_PIX_FMT_YUVA444P9BE] = { 1, 1 }, |
| 130 | [AV_PIX_FMT_YUVA444P9LE] = { 1, 1 }, |
| 131 | [AV_PIX_FMT_YUVA420P10BE]= { 1, 1 }, |
| 132 | [AV_PIX_FMT_YUVA420P10LE]= { 1, 1 }, |
| 133 | [AV_PIX_FMT_YUVA422P10BE]= { 1, 1 }, |
| 134 | [AV_PIX_FMT_YUVA422P10LE]= { 1, 1 }, |
| 135 | [AV_PIX_FMT_YUVA444P10BE]= { 1, 1 }, |
| 136 | [AV_PIX_FMT_YUVA444P10LE]= { 1, 1 }, |
| 137 | [AV_PIX_FMT_YUVA420P16BE]= { 1, 1 }, |
| 138 | [AV_PIX_FMT_YUVA420P16LE]= { 1, 1 }, |
| 139 | [AV_PIX_FMT_YUVA422P16BE]= { 1, 1 }, |
| 140 | [AV_PIX_FMT_YUVA422P16LE]= { 1, 1 }, |
| 141 | [AV_PIX_FMT_YUVA444P16BE]= { 1, 1 }, |
| 142 | [AV_PIX_FMT_YUVA444P16LE]= { 1, 1 }, |
| 143 | [AV_PIX_FMT_RGB48BE] = { 1, 1 }, |
| 144 | [AV_PIX_FMT_RGB48LE] = { 1, 1 }, |
| 145 | [AV_PIX_FMT_RGBA64BE] = { 1, 1, 1 }, |
| 146 | [AV_PIX_FMT_RGBA64LE] = { 1, 1, 1 }, |
| 147 | [AV_PIX_FMT_RGB565BE] = { 1, 1 }, |
| 148 | [AV_PIX_FMT_RGB565LE] = { 1, 1 }, |
| 149 | [AV_PIX_FMT_RGB555BE] = { 1, 1 }, |
| 150 | [AV_PIX_FMT_RGB555LE] = { 1, 1 }, |
| 151 | [AV_PIX_FMT_BGR565BE] = { 1, 1 }, |
| 152 | [AV_PIX_FMT_BGR565LE] = { 1, 1 }, |
| 153 | [AV_PIX_FMT_BGR555BE] = { 1, 1 }, |
| 154 | [AV_PIX_FMT_BGR555LE] = { 1, 1 }, |
| 155 | [AV_PIX_FMT_YUV420P16LE] = { 1, 1 }, |
| 156 | [AV_PIX_FMT_YUV420P16BE] = { 1, 1 }, |
| 157 | [AV_PIX_FMT_YUV422P16LE] = { 1, 1 }, |
| 158 | [AV_PIX_FMT_YUV422P16BE] = { 1, 1 }, |
| 159 | [AV_PIX_FMT_YUV444P16LE] = { 1, 1 }, |
| 160 | [AV_PIX_FMT_YUV444P16BE] = { 1, 1 }, |
| 161 | [AV_PIX_FMT_RGB444LE] = { 1, 1 }, |
| 162 | [AV_PIX_FMT_RGB444BE] = { 1, 1 }, |
| 163 | [AV_PIX_FMT_BGR444LE] = { 1, 1 }, |
| 164 | [AV_PIX_FMT_BGR444BE] = { 1, 1 }, |
| 165 | [AV_PIX_FMT_YA8] = { 1, 0 }, |
| 166 | [AV_PIX_FMT_YA16BE] = { 1, 0 }, |
| 167 | [AV_PIX_FMT_YA16LE] = { 1, 0 }, |
| 168 | [AV_PIX_FMT_BGR48BE] = { 1, 1 }, |
| 169 | [AV_PIX_FMT_BGR48LE] = { 1, 1 }, |
| 170 | [AV_PIX_FMT_BGRA64BE] = { 1, 1, 1 }, |
| 171 | [AV_PIX_FMT_BGRA64LE] = { 1, 1, 1 }, |
| 172 | [AV_PIX_FMT_YUV420P9BE] = { 1, 1 }, |
| 173 | [AV_PIX_FMT_YUV420P9LE] = { 1, 1 }, |
| 174 | [AV_PIX_FMT_YUV420P10BE] = { 1, 1 }, |
| 175 | [AV_PIX_FMT_YUV420P10LE] = { 1, 1 }, |
| 176 | [AV_PIX_FMT_YUV420P12BE] = { 1, 1 }, |
| 177 | [AV_PIX_FMT_YUV420P12LE] = { 1, 1 }, |
| 178 | [AV_PIX_FMT_YUV420P14BE] = { 1, 1 }, |
| 179 | [AV_PIX_FMT_YUV420P14LE] = { 1, 1 }, |
| 180 | [AV_PIX_FMT_YUV422P9BE] = { 1, 1 }, |
| 181 | [AV_PIX_FMT_YUV422P9LE] = { 1, 1 }, |
| 182 | [AV_PIX_FMT_YUV422P10BE] = { 1, 1 }, |
| 183 | [AV_PIX_FMT_YUV422P10LE] = { 1, 1 }, |
| 184 | [AV_PIX_FMT_YUV422P12BE] = { 1, 1 }, |
| 185 | [AV_PIX_FMT_YUV422P12LE] = { 1, 1 }, |
| 186 | [AV_PIX_FMT_YUV422P14BE] = { 1, 1 }, |
| 187 | [AV_PIX_FMT_YUV422P14LE] = { 1, 1 }, |
| 188 | [AV_PIX_FMT_YUV444P9BE] = { 1, 1 }, |
| 189 | [AV_PIX_FMT_YUV444P9LE] = { 1, 1 }, |
| 190 | [AV_PIX_FMT_YUV444P10BE] = { 1, 1 }, |
| 191 | [AV_PIX_FMT_YUV444P10LE] = { 1, 1 }, |
| 192 | [AV_PIX_FMT_YUV444P12BE] = { 1, 1 }, |
| 193 | [AV_PIX_FMT_YUV444P12LE] = { 1, 1 }, |
| 194 | [AV_PIX_FMT_YUV444P14BE] = { 1, 1 }, |
| 195 | [AV_PIX_FMT_YUV444P14LE] = { 1, 1 }, |
| 196 | [AV_PIX_FMT_GBRP] = { 1, 1 }, |
| 197 | [AV_PIX_FMT_GBRP9LE] = { 1, 1 }, |
| 198 | [AV_PIX_FMT_GBRP9BE] = { 1, 1 }, |
| 199 | [AV_PIX_FMT_GBRP10LE] = { 1, 1 }, |
| 200 | [AV_PIX_FMT_GBRP10BE] = { 1, 1 }, |
| 201 | [AV_PIX_FMT_GBRP12LE] = { 1, 1 }, |
| 202 | [AV_PIX_FMT_GBRP12BE] = { 1, 1 }, |
| 203 | [AV_PIX_FMT_GBRP14LE] = { 1, 1 }, |
| 204 | [AV_PIX_FMT_GBRP14BE] = { 1, 1 }, |
| 205 | [AV_PIX_FMT_GBRP16LE] = { 1, 0 }, |
| 206 | [AV_PIX_FMT_GBRP16BE] = { 1, 0 }, |
| 207 | [AV_PIX_FMT_XYZ12BE] = { 1, 1, 1 }, |
| 208 | [AV_PIX_FMT_XYZ12LE] = { 1, 1, 1 }, |
| 209 | [AV_PIX_FMT_GBRAP] = { 1, 1 }, |
| 210 | [AV_PIX_FMT_GBRAP16LE] = { 1, 0 }, |
| 211 | [AV_PIX_FMT_GBRAP16BE] = { 1, 0 }, |
| 212 | [AV_PIX_FMT_BAYER_BGGR8] = { 1, 0 }, |
| 213 | [AV_PIX_FMT_BAYER_RGGB8] = { 1, 0 }, |
| 214 | [AV_PIX_FMT_BAYER_GBRG8] = { 1, 0 }, |
| 215 | [AV_PIX_FMT_BAYER_GRBG8] = { 1, 0 }, |
| 216 | [AV_PIX_FMT_BAYER_BGGR16LE] = { 1, 0 }, |
| 217 | [AV_PIX_FMT_BAYER_BGGR16BE] = { 1, 0 }, |
| 218 | [AV_PIX_FMT_BAYER_RGGB16LE] = { 1, 0 }, |
| 219 | [AV_PIX_FMT_BAYER_RGGB16BE] = { 1, 0 }, |
| 220 | [AV_PIX_FMT_BAYER_GBRG16LE] = { 1, 0 }, |
| 221 | [AV_PIX_FMT_BAYER_GBRG16BE] = { 1, 0 }, |
| 222 | [AV_PIX_FMT_BAYER_GRBG16LE] = { 1, 0 }, |
| 223 | [AV_PIX_FMT_BAYER_GRBG16BE] = { 1, 0 }, |
| 224 | }; |
| 225 | |
| 226 | int sws_isSupportedInput(enum AVPixelFormat pix_fmt) |
| 227 | { |
| 228 | return (unsigned)pix_fmt < AV_PIX_FMT_NB ? |
| 229 | format_entries[pix_fmt].is_supported_in : 0; |
| 230 | } |
| 231 | |
| 232 | int sws_isSupportedOutput(enum AVPixelFormat pix_fmt) |
| 233 | { |
| 234 | return (unsigned)pix_fmt < AV_PIX_FMT_NB ? |
| 235 | format_entries[pix_fmt].is_supported_out : 0; |
| 236 | } |
| 237 | |
| 238 | int sws_isSupportedEndiannessConversion(enum AVPixelFormat pix_fmt) |
| 239 | { |
| 240 | return (unsigned)pix_fmt < AV_PIX_FMT_NB ? |
| 241 | format_entries[pix_fmt].is_supported_endianness : 0; |
| 242 | } |
| 243 | |
| 244 | static double getSplineCoeff(double a, double b, double c, double d, |
| 245 | double dist) |
| 246 | { |
| 247 | if (dist <= 1.0) |
| 248 | return ((d * dist + c) * dist + b) * dist + a; |
| 249 | else |
| 250 | return getSplineCoeff(0.0, |
| 251 | b + 2.0 * c + 3.0 * d, |
| 252 | c + 3.0 * d, |
| 253 | -b - 3.0 * c - 6.0 * d, |
| 254 | dist - 1.0); |
| 255 | } |
| 256 | |
| 257 | static av_cold int get_local_pos(SwsContext *s, int chr_subsample, int pos, int dir) |
| 258 | { |
| 259 | if (pos == -1 || pos <= -513) { |
| 260 | pos = (128 << chr_subsample) - 128; |
| 261 | } |
| 262 | pos += 128; // relative to ideal left edge |
| 263 | return pos >> chr_subsample; |
| 264 | } |
| 265 | |
| 266 | typedef struct { |
| 267 | int flag; ///< flag associated to the algorithm |
| 268 | const char *description; ///< human-readable description |
| 269 | int size_factor; ///< size factor used when initing the filters |
| 270 | } ScaleAlgorithm; |
| 271 | |
| 272 | static const ScaleAlgorithm scale_algorithms[] = { |
| 273 | { SWS_AREA, "area averaging", 1 /* downscale only, for upscale it is bilinear */ }, |
| 274 | { SWS_BICUBIC, "bicubic", 4 }, |
| 275 | { SWS_BICUBLIN, "luma bicubic / chroma bilinear", -1 }, |
| 276 | { SWS_BILINEAR, "bilinear", 2 }, |
| 277 | { SWS_FAST_BILINEAR, "fast bilinear", -1 }, |
| 278 | { SWS_GAUSS, "Gaussian", 8 /* infinite ;) */ }, |
| 279 | { SWS_LANCZOS, "Lanczos", -1 /* custom */ }, |
| 280 | { SWS_POINT, "nearest neighbor / point", -1 }, |
| 281 | { SWS_SINC, "sinc", 20 /* infinite ;) */ }, |
| 282 | { SWS_SPLINE, "bicubic spline", 20 /* infinite :)*/ }, |
| 283 | { SWS_X, "experimental", 8 }, |
| 284 | }; |
| 285 | |
| 286 | static av_cold int initFilter(int16_t **outFilter, int32_t **filterPos, |
| 287 | int *outFilterSize, int xInc, int srcW, |
| 288 | int dstW, int filterAlign, int one, |
| 289 | int flags, int cpu_flags, |
| 290 | SwsVector *srcFilter, SwsVector *dstFilter, |
| 291 | double param[2], int srcPos, int dstPos) |
| 292 | { |
| 293 | int i; |
| 294 | int filterSize; |
| 295 | int filter2Size; |
| 296 | int minFilterSize; |
| 297 | int64_t *filter = NULL; |
| 298 | int64_t *filter2 = NULL; |
| 299 | const int64_t fone = 1LL << (54 - FFMIN(av_log2(srcW/dstW), 8)); |
| 300 | int ret = -1; |
| 301 | |
| 302 | emms_c(); // FIXME should not be required but IS (even for non-MMX versions) |
| 303 | |
| 304 | // NOTE: the +3 is for the MMX(+1) / SSE(+3) scaler which reads over the end |
| 305 | FF_ALLOC_ARRAY_OR_GOTO(NULL, *filterPos, (dstW + 3), sizeof(**filterPos), fail); |
| 306 | |
| 307 | if (FFABS(xInc - 0x10000) < 10 && srcPos == dstPos) { // unscaled |
| 308 | int i; |
| 309 | filterSize = 1; |
| 310 | FF_ALLOCZ_ARRAY_OR_GOTO(NULL, filter, |
| 311 | dstW, sizeof(*filter) * filterSize, fail); |
| 312 | |
| 313 | for (i = 0; i < dstW; i++) { |
| 314 | filter[i * filterSize] = fone; |
| 315 | (*filterPos)[i] = i; |
| 316 | } |
| 317 | } else if (flags & SWS_POINT) { // lame looking point sampling mode |
| 318 | int i; |
| 319 | int64_t xDstInSrc; |
| 320 | filterSize = 1; |
| 321 | FF_ALLOC_ARRAY_OR_GOTO(NULL, filter, |
| 322 | dstW, sizeof(*filter) * filterSize, fail); |
| 323 | |
| 324 | xDstInSrc = ((dstPos*(int64_t)xInc)>>8) - ((srcPos*0x8000LL)>>7); |
| 325 | for (i = 0; i < dstW; i++) { |
| 326 | int xx = (xDstInSrc - ((filterSize - 1) << 15) + (1 << 15)) >> 16; |
| 327 | |
| 328 | (*filterPos)[i] = xx; |
| 329 | filter[i] = fone; |
| 330 | xDstInSrc += xInc; |
| 331 | } |
| 332 | } else if ((xInc <= (1 << 16) && (flags & SWS_AREA)) || |
| 333 | (flags & SWS_FAST_BILINEAR)) { // bilinear upscale |
| 334 | int i; |
| 335 | int64_t xDstInSrc; |
| 336 | filterSize = 2; |
| 337 | FF_ALLOC_ARRAY_OR_GOTO(NULL, filter, |
| 338 | dstW, sizeof(*filter) * filterSize, fail); |
| 339 | |
| 340 | xDstInSrc = ((dstPos*(int64_t)xInc)>>8) - ((srcPos*0x8000LL)>>7); |
| 341 | for (i = 0; i < dstW; i++) { |
| 342 | int xx = (xDstInSrc - ((filterSize - 1) << 15) + (1 << 15)) >> 16; |
| 343 | int j; |
| 344 | |
| 345 | (*filterPos)[i] = xx; |
| 346 | // bilinear upscale / linear interpolate / area averaging |
| 347 | for (j = 0; j < filterSize; j++) { |
| 348 | int64_t coeff= fone - FFABS(((int64_t)xx<<16) - xDstInSrc)*(fone>>16); |
| 349 | if (coeff < 0) |
| 350 | coeff = 0; |
| 351 | filter[i * filterSize + j] = coeff; |
| 352 | xx++; |
| 353 | } |
| 354 | xDstInSrc += xInc; |
| 355 | } |
| 356 | } else { |
| 357 | int64_t xDstInSrc; |
| 358 | int sizeFactor = -1; |
| 359 | |
| 360 | for (i = 0; i < FF_ARRAY_ELEMS(scale_algorithms); i++) { |
| 361 | if (flags & scale_algorithms[i].flag && scale_algorithms[i].size_factor > 0) { |
| 362 | sizeFactor = scale_algorithms[i].size_factor; |
| 363 | break; |
| 364 | } |
| 365 | } |
| 366 | if (flags & SWS_LANCZOS) |
| 367 | sizeFactor = param[0] != SWS_PARAM_DEFAULT ? ceil(2 * param[0]) : 6; |
| 368 | av_assert0(sizeFactor > 0); |
| 369 | |
| 370 | if (xInc <= 1 << 16) |
| 371 | filterSize = 1 + sizeFactor; // upscale |
| 372 | else |
| 373 | filterSize = 1 + (sizeFactor * srcW + dstW - 1) / dstW; |
| 374 | |
| 375 | filterSize = FFMIN(filterSize, srcW - 2); |
| 376 | filterSize = FFMAX(filterSize, 1); |
| 377 | |
| 378 | FF_ALLOC_ARRAY_OR_GOTO(NULL, filter, |
| 379 | dstW, sizeof(*filter) * filterSize, fail); |
| 380 | |
| 381 | xDstInSrc = ((dstPos*(int64_t)xInc)>>7) - ((srcPos*0x10000LL)>>7); |
| 382 | for (i = 0; i < dstW; i++) { |
| 383 | int xx = (xDstInSrc - ((int64_t)(filterSize - 2) << 16)) / (1 << 17); |
| 384 | int j; |
| 385 | (*filterPos)[i] = xx; |
| 386 | for (j = 0; j < filterSize; j++) { |
| 387 | int64_t d = (FFABS(((int64_t)xx << 17) - xDstInSrc)) << 13; |
| 388 | double floatd; |
| 389 | int64_t coeff; |
| 390 | |
| 391 | if (xInc > 1 << 16) |
| 392 | d = d * dstW / srcW; |
| 393 | floatd = d * (1.0 / (1 << 30)); |
| 394 | |
| 395 | if (flags & SWS_BICUBIC) { |
| 396 | int64_t B = (param[0] != SWS_PARAM_DEFAULT ? param[0] : 0) * (1 << 24); |
| 397 | int64_t C = (param[1] != SWS_PARAM_DEFAULT ? param[1] : 0.6) * (1 << 24); |
| 398 | |
| 399 | if (d >= 1LL << 31) { |
| 400 | coeff = 0.0; |
| 401 | } else { |
| 402 | int64_t dd = (d * d) >> 30; |
| 403 | int64_t ddd = (dd * d) >> 30; |
| 404 | |
| 405 | if (d < 1LL << 30) |
| 406 | coeff = (12 * (1 << 24) - 9 * B - 6 * C) * ddd + |
| 407 | (-18 * (1 << 24) + 12 * B + 6 * C) * dd + |
| 408 | (6 * (1 << 24) - 2 * B) * (1 << 30); |
| 409 | else |
| 410 | coeff = (-B - 6 * C) * ddd + |
| 411 | (6 * B + 30 * C) * dd + |
| 412 | (-12 * B - 48 * C) * d + |
| 413 | (8 * B + 24 * C) * (1 << 30); |
| 414 | } |
| 415 | coeff /= (1LL<<54)/fone; |
| 416 | } |
| 417 | #if 0 |
| 418 | else if (flags & SWS_X) { |
| 419 | double p = param ? param * 0.01 : 0.3; |
| 420 | coeff = d ? sin(d * M_PI) / (d * M_PI) : 1.0; |
| 421 | coeff *= pow(2.0, -p * d * d); |
| 422 | } |
| 423 | #endif |
| 424 | else if (flags & SWS_X) { |
| 425 | double A = param[0] != SWS_PARAM_DEFAULT ? param[0] : 1.0; |
| 426 | double c; |
| 427 | |
| 428 | if (floatd < 1.0) |
| 429 | c = cos(floatd * M_PI); |
| 430 | else |
| 431 | c = -1.0; |
| 432 | if (c < 0.0) |
| 433 | c = -pow(-c, A); |
| 434 | else |
| 435 | c = pow(c, A); |
| 436 | coeff = (c * 0.5 + 0.5) * fone; |
| 437 | } else if (flags & SWS_AREA) { |
| 438 | int64_t d2 = d - (1 << 29); |
| 439 | if (d2 * xInc < -(1LL << (29 + 16))) |
| 440 | coeff = 1.0 * (1LL << (30 + 16)); |
| 441 | else if (d2 * xInc < (1LL << (29 + 16))) |
| 442 | coeff = -d2 * xInc + (1LL << (29 + 16)); |
| 443 | else |
| 444 | coeff = 0.0; |
| 445 | coeff *= fone >> (30 + 16); |
| 446 | } else if (flags & SWS_GAUSS) { |
| 447 | double p = param[0] != SWS_PARAM_DEFAULT ? param[0] : 3.0; |
| 448 | coeff = (pow(2.0, -p * floatd * floatd)) * fone; |
| 449 | } else if (flags & SWS_SINC) { |
| 450 | coeff = (d ? sin(floatd * M_PI) / (floatd * M_PI) : 1.0) * fone; |
| 451 | } else if (flags & SWS_LANCZOS) { |
| 452 | double p = param[0] != SWS_PARAM_DEFAULT ? param[0] : 3.0; |
| 453 | coeff = (d ? sin(floatd * M_PI) * sin(floatd * M_PI / p) / |
| 454 | (floatd * floatd * M_PI * M_PI / p) : 1.0) * fone; |
| 455 | if (floatd > p) |
| 456 | coeff = 0; |
| 457 | } else if (flags & SWS_BILINEAR) { |
| 458 | coeff = (1 << 30) - d; |
| 459 | if (coeff < 0) |
| 460 | coeff = 0; |
| 461 | coeff *= fone >> 30; |
| 462 | } else if (flags & SWS_SPLINE) { |
| 463 | double p = -2.196152422706632; |
| 464 | coeff = getSplineCoeff(1.0, 0.0, p, -p - 1.0, floatd) * fone; |
| 465 | } else { |
| 466 | av_assert0(0); |
| 467 | } |
| 468 | |
| 469 | filter[i * filterSize + j] = coeff; |
| 470 | xx++; |
| 471 | } |
| 472 | xDstInSrc += 2 * xInc; |
| 473 | } |
| 474 | } |
| 475 | |
| 476 | /* apply src & dst Filter to filter -> filter2 |
| 477 | * av_free(filter); |
| 478 | */ |
| 479 | av_assert0(filterSize > 0); |
| 480 | filter2Size = filterSize; |
| 481 | if (srcFilter) |
| 482 | filter2Size += srcFilter->length - 1; |
| 483 | if (dstFilter) |
| 484 | filter2Size += dstFilter->length - 1; |
| 485 | av_assert0(filter2Size > 0); |
| 486 | FF_ALLOCZ_ARRAY_OR_GOTO(NULL, filter2, dstW, filter2Size * sizeof(*filter2), fail); |
| 487 | |
| 488 | for (i = 0; i < dstW; i++) { |
| 489 | int j, k; |
| 490 | |
| 491 | if (srcFilter) { |
| 492 | for (k = 0; k < srcFilter->length; k++) { |
| 493 | for (j = 0; j < filterSize; j++) |
| 494 | filter2[i * filter2Size + k + j] += |
| 495 | srcFilter->coeff[k] * filter[i * filterSize + j]; |
| 496 | } |
| 497 | } else { |
| 498 | for (j = 0; j < filterSize; j++) |
| 499 | filter2[i * filter2Size + j] = filter[i * filterSize + j]; |
| 500 | } |
| 501 | // FIXME dstFilter |
| 502 | |
| 503 | (*filterPos)[i] += (filterSize - 1) / 2 - (filter2Size - 1) / 2; |
| 504 | } |
| 505 | av_freep(&filter); |
| 506 | |
| 507 | /* try to reduce the filter-size (step1 find size and shift left) */ |
| 508 | // Assume it is near normalized (*0.5 or *2.0 is OK but * 0.001 is not). |
| 509 | minFilterSize = 0; |
| 510 | for (i = dstW - 1; i >= 0; i--) { |
| 511 | int min = filter2Size; |
| 512 | int j; |
| 513 | int64_t cutOff = 0.0; |
| 514 | |
| 515 | /* get rid of near zero elements on the left by shifting left */ |
| 516 | for (j = 0; j < filter2Size; j++) { |
| 517 | int k; |
| 518 | cutOff += FFABS(filter2[i * filter2Size]); |
| 519 | |
| 520 | if (cutOff > SWS_MAX_REDUCE_CUTOFF * fone) |
| 521 | break; |
| 522 | |
| 523 | /* preserve monotonicity because the core can't handle the |
| 524 | * filter otherwise */ |
| 525 | if (i < dstW - 1 && (*filterPos)[i] >= (*filterPos)[i + 1]) |
| 526 | break; |
| 527 | |
| 528 | // move filter coefficients left |
| 529 | for (k = 1; k < filter2Size; k++) |
| 530 | filter2[i * filter2Size + k - 1] = filter2[i * filter2Size + k]; |
| 531 | filter2[i * filter2Size + k - 1] = 0; |
| 532 | (*filterPos)[i]++; |
| 533 | } |
| 534 | |
| 535 | cutOff = 0; |
| 536 | /* count near zeros on the right */ |
| 537 | for (j = filter2Size - 1; j > 0; j--) { |
| 538 | cutOff += FFABS(filter2[i * filter2Size + j]); |
| 539 | |
| 540 | if (cutOff > SWS_MAX_REDUCE_CUTOFF * fone) |
| 541 | break; |
| 542 | min--; |
| 543 | } |
| 544 | |
| 545 | if (min > minFilterSize) |
| 546 | minFilterSize = min; |
| 547 | } |
| 548 | |
| 549 | if (PPC_ALTIVEC(cpu_flags)) { |
| 550 | // we can handle the special case 4, so we don't want to go the full 8 |
| 551 | if (minFilterSize < 5) |
| 552 | filterAlign = 4; |
| 553 | |
| 554 | /* We really don't want to waste our time doing useless computation, so |
| 555 | * fall back on the scalar C code for very small filters. |
| 556 | * Vectorizing is worth it only if you have a decent-sized vector. */ |
| 557 | if (minFilterSize < 3) |
| 558 | filterAlign = 1; |
| 559 | } |
| 560 | |
| 561 | if (HAVE_MMX && cpu_flags & AV_CPU_FLAG_MMX) { |
| 562 | // special case for unscaled vertical filtering |
| 563 | if (minFilterSize == 1 && filterAlign == 2) |
| 564 | filterAlign = 1; |
| 565 | } |
| 566 | |
| 567 | av_assert0(minFilterSize > 0); |
| 568 | filterSize = (minFilterSize + (filterAlign - 1)) & (~(filterAlign - 1)); |
| 569 | av_assert0(filterSize > 0); |
| 570 | filter = av_malloc_array(dstW, filterSize * sizeof(*filter)); |
| 571 | if (!filter) |
| 572 | goto fail; |
| 573 | if (filterSize >= MAX_FILTER_SIZE * 16 / |
| 574 | ((flags & SWS_ACCURATE_RND) ? APCK_SIZE : 16)) { |
| 575 | ret = RETCODE_USE_CASCADE; |
| 576 | goto fail; |
| 577 | } |
| 578 | *outFilterSize = filterSize; |
| 579 | |
| 580 | if (flags & SWS_PRINT_INFO) |
| 581 | av_log(NULL, AV_LOG_VERBOSE, |
| 582 | "SwScaler: reducing / aligning filtersize %d -> %d\n", |
| 583 | filter2Size, filterSize); |
| 584 | /* try to reduce the filter-size (step2 reduce it) */ |
| 585 | for (i = 0; i < dstW; i++) { |
| 586 | int j; |
| 587 | |
| 588 | for (j = 0; j < filterSize; j++) { |
| 589 | if (j >= filter2Size) |
| 590 | filter[i * filterSize + j] = 0; |
| 591 | else |
| 592 | filter[i * filterSize + j] = filter2[i * filter2Size + j]; |
| 593 | if ((flags & SWS_BITEXACT) && j >= minFilterSize) |
| 594 | filter[i * filterSize + j] = 0; |
| 595 | } |
| 596 | } |
| 597 | |
| 598 | // FIXME try to align filterPos if possible |
| 599 | |
| 600 | // fix borders |
| 601 | for (i = 0; i < dstW; i++) { |
| 602 | int j; |
| 603 | if ((*filterPos)[i] < 0) { |
| 604 | // move filter coefficients left to compensate for filterPos |
| 605 | for (j = 1; j < filterSize; j++) { |
| 606 | int left = FFMAX(j + (*filterPos)[i], 0); |
| 607 | filter[i * filterSize + left] += filter[i * filterSize + j]; |
| 608 | filter[i * filterSize + j] = 0; |
| 609 | } |
| 610 | (*filterPos)[i]= 0; |
| 611 | } |
| 612 | |
| 613 | if ((*filterPos)[i] + filterSize > srcW) { |
| 614 | int shift = (*filterPos)[i] + filterSize - srcW; |
| 615 | // move filter coefficients right to compensate for filterPos |
| 616 | for (j = filterSize - 2; j >= 0; j--) { |
| 617 | int right = FFMIN(j + shift, filterSize - 1); |
| 618 | filter[i * filterSize + right] += filter[i * filterSize + j]; |
| 619 | filter[i * filterSize + j] = 0; |
| 620 | } |
| 621 | (*filterPos)[i]= srcW - filterSize; |
| 622 | } |
| 623 | } |
| 624 | |
| 625 | // Note the +1 is for the MMX scaler which reads over the end |
| 626 | /* align at 16 for AltiVec (needed by hScale_altivec_real) */ |
| 627 | FF_ALLOCZ_ARRAY_OR_GOTO(NULL, *outFilter, |
| 628 | (dstW + 3), *outFilterSize * sizeof(int16_t), fail); |
| 629 | |
| 630 | /* normalize & store in outFilter */ |
| 631 | for (i = 0; i < dstW; i++) { |
| 632 | int j; |
| 633 | int64_t error = 0; |
| 634 | int64_t sum = 0; |
| 635 | |
| 636 | for (j = 0; j < filterSize; j++) { |
| 637 | sum += filter[i * filterSize + j]; |
| 638 | } |
| 639 | sum = (sum + one / 2) / one; |
| 640 | if (!sum) { |
| 641 | av_log(NULL, AV_LOG_WARNING, "SwScaler: zero vector in scaling\n"); |
| 642 | sum = 1; |
| 643 | } |
| 644 | for (j = 0; j < *outFilterSize; j++) { |
| 645 | int64_t v = filter[i * filterSize + j] + error; |
| 646 | int intV = ROUNDED_DIV(v, sum); |
| 647 | (*outFilter)[i * (*outFilterSize) + j] = intV; |
| 648 | error = v - intV * sum; |
| 649 | } |
| 650 | } |
| 651 | |
| 652 | (*filterPos)[dstW + 0] = |
| 653 | (*filterPos)[dstW + 1] = |
| 654 | (*filterPos)[dstW + 2] = (*filterPos)[dstW - 1]; /* the MMX/SSE scaler will |
| 655 | * read over the end */ |
| 656 | for (i = 0; i < *outFilterSize; i++) { |
| 657 | int k = (dstW - 1) * (*outFilterSize) + i; |
| 658 | (*outFilter)[k + 1 * (*outFilterSize)] = |
| 659 | (*outFilter)[k + 2 * (*outFilterSize)] = |
| 660 | (*outFilter)[k + 3 * (*outFilterSize)] = (*outFilter)[k]; |
| 661 | } |
| 662 | |
| 663 | ret = 0; |
| 664 | |
| 665 | fail: |
| 666 | if(ret < 0) |
| 667 | av_log(NULL, ret == RETCODE_USE_CASCADE ? AV_LOG_DEBUG : AV_LOG_ERROR, "sws: initFilter failed\n"); |
| 668 | av_free(filter); |
| 669 | av_free(filter2); |
| 670 | return ret; |
| 671 | } |
| 672 | |
| 673 | static void fill_rgb2yuv_table(SwsContext *c, const int table[4], int dstRange) |
| 674 | { |
| 675 | int64_t W, V, Z, Cy, Cu, Cv; |
| 676 | int64_t vr = table[0]; |
| 677 | int64_t ub = table[1]; |
| 678 | int64_t ug = -table[2]; |
| 679 | int64_t vg = -table[3]; |
| 680 | int64_t ONE = 65536; |
| 681 | int64_t cy = ONE; |
| 682 | uint8_t *p = (uint8_t*)c->input_rgb2yuv_table; |
| 683 | int i; |
| 684 | static const int8_t map[] = { |
| 685 | BY_IDX, GY_IDX, -1 , BY_IDX, BY_IDX, GY_IDX, -1 , BY_IDX, |
| 686 | RY_IDX, -1 , GY_IDX, RY_IDX, RY_IDX, -1 , GY_IDX, RY_IDX, |
| 687 | RY_IDX, GY_IDX, -1 , RY_IDX, RY_IDX, GY_IDX, -1 , RY_IDX, |
| 688 | BY_IDX, -1 , GY_IDX, BY_IDX, BY_IDX, -1 , GY_IDX, BY_IDX, |
| 689 | BU_IDX, GU_IDX, -1 , BU_IDX, BU_IDX, GU_IDX, -1 , BU_IDX, |
| 690 | RU_IDX, -1 , GU_IDX, RU_IDX, RU_IDX, -1 , GU_IDX, RU_IDX, |
| 691 | RU_IDX, GU_IDX, -1 , RU_IDX, RU_IDX, GU_IDX, -1 , RU_IDX, |
| 692 | BU_IDX, -1 , GU_IDX, BU_IDX, BU_IDX, -1 , GU_IDX, BU_IDX, |
| 693 | BV_IDX, GV_IDX, -1 , BV_IDX, BV_IDX, GV_IDX, -1 , BV_IDX, |
| 694 | RV_IDX, -1 , GV_IDX, RV_IDX, RV_IDX, -1 , GV_IDX, RV_IDX, |
| 695 | RV_IDX, GV_IDX, -1 , RV_IDX, RV_IDX, GV_IDX, -1 , RV_IDX, |
| 696 | BV_IDX, -1 , GV_IDX, BV_IDX, BV_IDX, -1 , GV_IDX, BV_IDX, |
| 697 | RY_IDX, BY_IDX, RY_IDX, BY_IDX, RY_IDX, BY_IDX, RY_IDX, BY_IDX, |
| 698 | BY_IDX, RY_IDX, BY_IDX, RY_IDX, BY_IDX, RY_IDX, BY_IDX, RY_IDX, |
| 699 | GY_IDX, -1 , GY_IDX, -1 , GY_IDX, -1 , GY_IDX, -1 , |
| 700 | -1 , GY_IDX, -1 , GY_IDX, -1 , GY_IDX, -1 , GY_IDX, |
| 701 | RU_IDX, BU_IDX, RU_IDX, BU_IDX, RU_IDX, BU_IDX, RU_IDX, BU_IDX, |
| 702 | BU_IDX, RU_IDX, BU_IDX, RU_IDX, BU_IDX, RU_IDX, BU_IDX, RU_IDX, |
| 703 | GU_IDX, -1 , GU_IDX, -1 , GU_IDX, -1 , GU_IDX, -1 , |
| 704 | -1 , GU_IDX, -1 , GU_IDX, -1 , GU_IDX, -1 , GU_IDX, |
| 705 | RV_IDX, BV_IDX, RV_IDX, BV_IDX, RV_IDX, BV_IDX, RV_IDX, BV_IDX, |
| 706 | BV_IDX, RV_IDX, BV_IDX, RV_IDX, BV_IDX, RV_IDX, BV_IDX, RV_IDX, |
| 707 | GV_IDX, -1 , GV_IDX, -1 , GV_IDX, -1 , GV_IDX, -1 , |
| 708 | -1 , GV_IDX, -1 , GV_IDX, -1 , GV_IDX, -1 , GV_IDX, //23 |
| 709 | -1 , -1 , -1 , -1 , -1 , -1 , -1 , -1 , //24 |
| 710 | -1 , -1 , -1 , -1 , -1 , -1 , -1 , -1 , //25 |
| 711 | -1 , -1 , -1 , -1 , -1 , -1 , -1 , -1 , //26 |
| 712 | -1 , -1 , -1 , -1 , -1 , -1 , -1 , -1 , //27 |
| 713 | -1 , -1 , -1 , -1 , -1 , -1 , -1 , -1 , //28 |
| 714 | -1 , -1 , -1 , -1 , -1 , -1 , -1 , -1 , //29 |
| 715 | -1 , -1 , -1 , -1 , -1 , -1 , -1 , -1 , //30 |
| 716 | -1 , -1 , -1 , -1 , -1 , -1 , -1 , -1 , //31 |
| 717 | BY_IDX, GY_IDX, RY_IDX, -1 , -1 , -1 , -1 , -1 , //32 |
| 718 | BU_IDX, GU_IDX, RU_IDX, -1 , -1 , -1 , -1 , -1 , //33 |
| 719 | BV_IDX, GV_IDX, RV_IDX, -1 , -1 , -1 , -1 , -1 , //34 |
| 720 | }; |
| 721 | |
| 722 | dstRange = 0; //FIXME range = 1 is handled elsewhere |
| 723 | |
| 724 | if (!dstRange) { |
| 725 | cy = cy * 255 / 219; |
| 726 | } else { |
| 727 | vr = vr * 224 / 255; |
| 728 | ub = ub * 224 / 255; |
| 729 | ug = ug * 224 / 255; |
| 730 | vg = vg * 224 / 255; |
| 731 | } |
| 732 | W = ROUNDED_DIV(ONE*ONE*ug, ub); |
| 733 | V = ROUNDED_DIV(ONE*ONE*vg, vr); |
| 734 | Z = ONE*ONE-W-V; |
| 735 | |
| 736 | Cy = ROUNDED_DIV(cy*Z, ONE); |
| 737 | Cu = ROUNDED_DIV(ub*Z, ONE); |
| 738 | Cv = ROUNDED_DIV(vr*Z, ONE); |
| 739 | |
| 740 | c->input_rgb2yuv_table[RY_IDX] = -ROUNDED_DIV((1 << RGB2YUV_SHIFT)*V , Cy); |
| 741 | c->input_rgb2yuv_table[GY_IDX] = ROUNDED_DIV((1 << RGB2YUV_SHIFT)*ONE*ONE , Cy); |
| 742 | c->input_rgb2yuv_table[BY_IDX] = -ROUNDED_DIV((1 << RGB2YUV_SHIFT)*W , Cy); |
| 743 | |
| 744 | c->input_rgb2yuv_table[RU_IDX] = ROUNDED_DIV((1 << RGB2YUV_SHIFT)*V , Cu); |
| 745 | c->input_rgb2yuv_table[GU_IDX] = -ROUNDED_DIV((1 << RGB2YUV_SHIFT)*ONE*ONE , Cu); |
| 746 | c->input_rgb2yuv_table[BU_IDX] = ROUNDED_DIV((1 << RGB2YUV_SHIFT)*(Z+W) , Cu); |
| 747 | |
| 748 | c->input_rgb2yuv_table[RV_IDX] = ROUNDED_DIV((1 << RGB2YUV_SHIFT)*(V+Z) , Cv); |
| 749 | c->input_rgb2yuv_table[GV_IDX] = -ROUNDED_DIV((1 << RGB2YUV_SHIFT)*ONE*ONE , Cv); |
| 750 | c->input_rgb2yuv_table[BV_IDX] = ROUNDED_DIV((1 << RGB2YUV_SHIFT)*W , Cv); |
| 751 | |
| 752 | if(/*!dstRange && */!memcmp(table, ff_yuv2rgb_coeffs[SWS_CS_DEFAULT], sizeof(ff_yuv2rgb_coeffs[SWS_CS_DEFAULT]))) { |
| 753 | c->input_rgb2yuv_table[BY_IDX] = ((int)(0.114 * 219 / 255 * (1 << RGB2YUV_SHIFT) + 0.5)); |
| 754 | c->input_rgb2yuv_table[BV_IDX] = (-(int)(0.081 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5)); |
| 755 | c->input_rgb2yuv_table[BU_IDX] = ((int)(0.500 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5)); |
| 756 | c->input_rgb2yuv_table[GY_IDX] = ((int)(0.587 * 219 / 255 * (1 << RGB2YUV_SHIFT) + 0.5)); |
| 757 | c->input_rgb2yuv_table[GV_IDX] = (-(int)(0.419 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5)); |
| 758 | c->input_rgb2yuv_table[GU_IDX] = (-(int)(0.331 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5)); |
| 759 | c->input_rgb2yuv_table[RY_IDX] = ((int)(0.299 * 219 / 255 * (1 << RGB2YUV_SHIFT) + 0.5)); |
| 760 | c->input_rgb2yuv_table[RV_IDX] = ((int)(0.500 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5)); |
| 761 | c->input_rgb2yuv_table[RU_IDX] = (-(int)(0.169 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5)); |
| 762 | } |
| 763 | for(i=0; i<FF_ARRAY_ELEMS(map); i++) |
| 764 | AV_WL16(p + 16*4 + 2*i, map[i] >= 0 ? c->input_rgb2yuv_table[map[i]] : 0); |
| 765 | } |
| 766 | |
| 767 | static void fill_xyztables(struct SwsContext *c) |
| 768 | { |
| 769 | int i; |
| 770 | double xyzgamma = XYZ_GAMMA; |
| 771 | double rgbgamma = 1.0 / RGB_GAMMA; |
| 772 | double xyzgammainv = 1.0 / XYZ_GAMMA; |
| 773 | double rgbgammainv = RGB_GAMMA; |
| 774 | static const int16_t xyz2rgb_matrix[3][4] = { |
| 775 | {13270, -6295, -2041}, |
| 776 | {-3969, 7682, 170}, |
| 777 | { 228, -835, 4329} }; |
| 778 | static const int16_t rgb2xyz_matrix[3][4] = { |
| 779 | {1689, 1464, 739}, |
| 780 | { 871, 2929, 296}, |
| 781 | { 79, 488, 3891} }; |
| 782 | static int16_t xyzgamma_tab[4096], rgbgamma_tab[4096], xyzgammainv_tab[4096], rgbgammainv_tab[4096]; |
| 783 | |
| 784 | memcpy(c->xyz2rgb_matrix, xyz2rgb_matrix, sizeof(c->xyz2rgb_matrix)); |
| 785 | memcpy(c->rgb2xyz_matrix, rgb2xyz_matrix, sizeof(c->rgb2xyz_matrix)); |
| 786 | c->xyzgamma = xyzgamma_tab; |
| 787 | c->rgbgamma = rgbgamma_tab; |
| 788 | c->xyzgammainv = xyzgammainv_tab; |
| 789 | c->rgbgammainv = rgbgammainv_tab; |
| 790 | |
| 791 | if (rgbgamma_tab[4095]) |
| 792 | return; |
| 793 | |
| 794 | /* set gamma vectors */ |
| 795 | for (i = 0; i < 4096; i++) { |
| 796 | xyzgamma_tab[i] = lrint(pow(i / 4095.0, xyzgamma) * 4095.0); |
| 797 | rgbgamma_tab[i] = lrint(pow(i / 4095.0, rgbgamma) * 4095.0); |
| 798 | xyzgammainv_tab[i] = lrint(pow(i / 4095.0, xyzgammainv) * 4095.0); |
| 799 | rgbgammainv_tab[i] = lrint(pow(i / 4095.0, rgbgammainv) * 4095.0); |
| 800 | } |
| 801 | } |
| 802 | |
| 803 | int sws_setColorspaceDetails(struct SwsContext *c, const int inv_table[4], |
| 804 | int srcRange, const int table[4], int dstRange, |
| 805 | int brightness, int contrast, int saturation) |
| 806 | { |
| 807 | const AVPixFmtDescriptor *desc_dst; |
| 808 | const AVPixFmtDescriptor *desc_src; |
| 809 | int need_reinit = 0; |
| 810 | memmove(c->srcColorspaceTable, inv_table, sizeof(int) * 4); |
| 811 | memmove(c->dstColorspaceTable, table, sizeof(int) * 4); |
| 812 | |
| 813 | handle_formats(c); |
| 814 | desc_dst = av_pix_fmt_desc_get(c->dstFormat); |
| 815 | desc_src = av_pix_fmt_desc_get(c->srcFormat); |
| 816 | |
| 817 | if(!isYUV(c->dstFormat) && !isGray(c->dstFormat)) |
| 818 | dstRange = 0; |
| 819 | if(!isYUV(c->srcFormat) && !isGray(c->srcFormat)) |
| 820 | srcRange = 0; |
| 821 | |
| 822 | c->brightness = brightness; |
| 823 | c->contrast = contrast; |
| 824 | c->saturation = saturation; |
| 825 | if (c->srcRange != srcRange || c->dstRange != dstRange) |
| 826 | need_reinit = 1; |
| 827 | c->srcRange = srcRange; |
| 828 | c->dstRange = dstRange; |
| 829 | |
| 830 | //The srcBpc check is possibly wrong but we seem to lack a definitive reference to test this |
| 831 | //and what we have in ticket 2939 looks better with this check |
| 832 | if (need_reinit && (c->srcBpc == 8 || !isYUV(c->srcFormat))) |
| 833 | ff_sws_init_range_convert(c); |
| 834 | |
| 835 | if ((isYUV(c->dstFormat) || isGray(c->dstFormat)) && (isYUV(c->srcFormat) || isGray(c->srcFormat))) |
| 836 | return -1; |
| 837 | |
| 838 | c->dstFormatBpp = av_get_bits_per_pixel(desc_dst); |
| 839 | c->srcFormatBpp = av_get_bits_per_pixel(desc_src); |
| 840 | |
| 841 | if (!isYUV(c->dstFormat) && !isGray(c->dstFormat)) { |
| 842 | ff_yuv2rgb_c_init_tables(c, inv_table, srcRange, brightness, |
| 843 | contrast, saturation); |
| 844 | // FIXME factorize |
| 845 | |
| 846 | if (ARCH_PPC) |
| 847 | ff_yuv2rgb_init_tables_ppc(c, inv_table, brightness, |
| 848 | contrast, saturation); |
| 849 | } |
| 850 | |
| 851 | fill_rgb2yuv_table(c, table, dstRange); |
| 852 | |
| 853 | return 0; |
| 854 | } |
| 855 | |
| 856 | int sws_getColorspaceDetails(struct SwsContext *c, int **inv_table, |
| 857 | int *srcRange, int **table, int *dstRange, |
| 858 | int *brightness, int *contrast, int *saturation) |
| 859 | { |
| 860 | if (!c ) |
| 861 | return -1; |
| 862 | |
| 863 | *inv_table = c->srcColorspaceTable; |
| 864 | *table = c->dstColorspaceTable; |
| 865 | *srcRange = c->srcRange; |
| 866 | *dstRange = c->dstRange; |
| 867 | *brightness = c->brightness; |
| 868 | *contrast = c->contrast; |
| 869 | *saturation = c->saturation; |
| 870 | |
| 871 | return 0; |
| 872 | } |
| 873 | |
| 874 | static int handle_jpeg(enum AVPixelFormat *format) |
| 875 | { |
| 876 | switch (*format) { |
| 877 | case AV_PIX_FMT_YUVJ420P: |
| 878 | *format = AV_PIX_FMT_YUV420P; |
| 879 | return 1; |
| 880 | case AV_PIX_FMT_YUVJ411P: |
| 881 | *format = AV_PIX_FMT_YUV411P; |
| 882 | return 1; |
| 883 | case AV_PIX_FMT_YUVJ422P: |
| 884 | *format = AV_PIX_FMT_YUV422P; |
| 885 | return 1; |
| 886 | case AV_PIX_FMT_YUVJ444P: |
| 887 | *format = AV_PIX_FMT_YUV444P; |
| 888 | return 1; |
| 889 | case AV_PIX_FMT_YUVJ440P: |
| 890 | *format = AV_PIX_FMT_YUV440P; |
| 891 | return 1; |
| 892 | case AV_PIX_FMT_GRAY8: |
| 893 | case AV_PIX_FMT_GRAY16LE: |
| 894 | case AV_PIX_FMT_GRAY16BE: |
| 895 | return 1; |
| 896 | default: |
| 897 | return 0; |
| 898 | } |
| 899 | } |
| 900 | |
| 901 | static int handle_0alpha(enum AVPixelFormat *format) |
| 902 | { |
| 903 | switch (*format) { |
| 904 | case AV_PIX_FMT_0BGR : *format = AV_PIX_FMT_ABGR ; return 1; |
| 905 | case AV_PIX_FMT_BGR0 : *format = AV_PIX_FMT_BGRA ; return 4; |
| 906 | case AV_PIX_FMT_0RGB : *format = AV_PIX_FMT_ARGB ; return 1; |
| 907 | case AV_PIX_FMT_RGB0 : *format = AV_PIX_FMT_RGBA ; return 4; |
| 908 | default: return 0; |
| 909 | } |
| 910 | } |
| 911 | |
| 912 | static int handle_xyz(enum AVPixelFormat *format) |
| 913 | { |
| 914 | switch (*format) { |
| 915 | case AV_PIX_FMT_XYZ12BE : *format = AV_PIX_FMT_RGB48BE; return 1; |
| 916 | case AV_PIX_FMT_XYZ12LE : *format = AV_PIX_FMT_RGB48LE; return 1; |
| 917 | default: return 0; |
| 918 | } |
| 919 | } |
| 920 | |
| 921 | static void handle_formats(SwsContext *c) |
| 922 | { |
| 923 | c->src0Alpha |= handle_0alpha(&c->srcFormat); |
| 924 | c->dst0Alpha |= handle_0alpha(&c->dstFormat); |
| 925 | c->srcXYZ |= handle_xyz(&c->srcFormat); |
| 926 | c->dstXYZ |= handle_xyz(&c->dstFormat); |
| 927 | if (c->srcXYZ || c->dstXYZ) |
| 928 | fill_xyztables(c); |
| 929 | } |
| 930 | |
| 931 | SwsContext *sws_alloc_context(void) |
| 932 | { |
| 933 | SwsContext *c = av_mallocz(sizeof(SwsContext)); |
| 934 | |
| 935 | av_assert0(offsetof(SwsContext, redDither) + DITHER32_INT == offsetof(SwsContext, dither32)); |
| 936 | |
| 937 | if (c) { |
| 938 | c->av_class = &sws_context_class; |
| 939 | av_opt_set_defaults(c); |
| 940 | } |
| 941 | |
| 942 | return c; |
| 943 | } |
| 944 | |
| 945 | av_cold int sws_init_context(SwsContext *c, SwsFilter *srcFilter, |
| 946 | SwsFilter *dstFilter) |
| 947 | { |
| 948 | int i, j; |
| 949 | int usesVFilter, usesHFilter; |
| 950 | int unscaled; |
| 951 | SwsFilter dummyFilter = { NULL, NULL, NULL, NULL }; |
| 952 | int srcW = c->srcW; |
| 953 | int srcH = c->srcH; |
| 954 | int dstW = c->dstW; |
| 955 | int dstH = c->dstH; |
| 956 | int dst_stride = FFALIGN(dstW * sizeof(int16_t) + 66, 16); |
| 957 | int flags, cpu_flags; |
| 958 | enum AVPixelFormat srcFormat = c->srcFormat; |
| 959 | enum AVPixelFormat dstFormat = c->dstFormat; |
| 960 | const AVPixFmtDescriptor *desc_src; |
| 961 | const AVPixFmtDescriptor *desc_dst; |
| 962 | int ret = 0; |
| 963 | |
| 964 | cpu_flags = av_get_cpu_flags(); |
| 965 | flags = c->flags; |
| 966 | emms_c(); |
| 967 | if (!rgb15to16) |
| 968 | sws_rgb2rgb_init(); |
| 969 | |
| 970 | unscaled = (srcW == dstW && srcH == dstH); |
| 971 | |
| 972 | c->srcRange |= handle_jpeg(&c->srcFormat); |
| 973 | c->dstRange |= handle_jpeg(&c->dstFormat); |
| 974 | |
| 975 | if(srcFormat!=c->srcFormat || dstFormat!=c->dstFormat) |
| 976 | av_log(c, AV_LOG_WARNING, "deprecated pixel format used, make sure you did set range correctly\n"); |
| 977 | |
| 978 | if (!c->contrast && !c->saturation && !c->dstFormatBpp) |
| 979 | sws_setColorspaceDetails(c, ff_yuv2rgb_coeffs[SWS_CS_DEFAULT], c->srcRange, |
| 980 | ff_yuv2rgb_coeffs[SWS_CS_DEFAULT], |
| 981 | c->dstRange, 0, 1 << 16, 1 << 16); |
| 982 | |
| 983 | handle_formats(c); |
| 984 | srcFormat = c->srcFormat; |
| 985 | dstFormat = c->dstFormat; |
| 986 | desc_src = av_pix_fmt_desc_get(srcFormat); |
| 987 | desc_dst = av_pix_fmt_desc_get(dstFormat); |
| 988 | |
| 989 | if (!(unscaled && sws_isSupportedEndiannessConversion(srcFormat) && |
| 990 | av_pix_fmt_swap_endianness(srcFormat) == dstFormat)) { |
| 991 | if (!sws_isSupportedInput(srcFormat)) { |
| 992 | av_log(c, AV_LOG_ERROR, "%s is not supported as input pixel format\n", |
| 993 | av_get_pix_fmt_name(srcFormat)); |
| 994 | return AVERROR(EINVAL); |
| 995 | } |
| 996 | if (!sws_isSupportedOutput(dstFormat)) { |
| 997 | av_log(c, AV_LOG_ERROR, "%s is not supported as output pixel format\n", |
| 998 | av_get_pix_fmt_name(dstFormat)); |
| 999 | return AVERROR(EINVAL); |
| 1000 | } |
| 1001 | } |
| 1002 | |
| 1003 | i = flags & (SWS_POINT | |
| 1004 | SWS_AREA | |
| 1005 | SWS_BILINEAR | |
| 1006 | SWS_FAST_BILINEAR | |
| 1007 | SWS_BICUBIC | |
| 1008 | SWS_X | |
| 1009 | SWS_GAUSS | |
| 1010 | SWS_LANCZOS | |
| 1011 | SWS_SINC | |
| 1012 | SWS_SPLINE | |
| 1013 | SWS_BICUBLIN); |
| 1014 | |
| 1015 | /* provide a default scaler if not set by caller */ |
| 1016 | if (!i) { |
| 1017 | if (dstW < srcW && dstH < srcH) |
| 1018 | flags |= SWS_BICUBIC; |
| 1019 | else if (dstW > srcW && dstH > srcH) |
| 1020 | flags |= SWS_BICUBIC; |
| 1021 | else |
| 1022 | flags |= SWS_BICUBIC; |
| 1023 | c->flags = flags; |
| 1024 | } else if (i & (i - 1)) { |
| 1025 | av_log(c, AV_LOG_ERROR, |
| 1026 | "Exactly one scaler algorithm must be chosen, got %X\n", i); |
| 1027 | return AVERROR(EINVAL); |
| 1028 | } |
| 1029 | /* sanity check */ |
| 1030 | if (srcW < 1 || srcH < 1 || dstW < 1 || dstH < 1) { |
| 1031 | /* FIXME check if these are enough and try to lower them after |
| 1032 | * fixing the relevant parts of the code */ |
| 1033 | av_log(c, AV_LOG_ERROR, "%dx%d -> %dx%d is invalid scaling dimension\n", |
| 1034 | srcW, srcH, dstW, dstH); |
| 1035 | return AVERROR(EINVAL); |
| 1036 | } |
| 1037 | |
| 1038 | if (!dstFilter) |
| 1039 | dstFilter = &dummyFilter; |
| 1040 | if (!srcFilter) |
| 1041 | srcFilter = &dummyFilter; |
| 1042 | |
| 1043 | c->lumXInc = (((int64_t)srcW << 16) + (dstW >> 1)) / dstW; |
| 1044 | c->lumYInc = (((int64_t)srcH << 16) + (dstH >> 1)) / dstH; |
| 1045 | c->dstFormatBpp = av_get_bits_per_pixel(desc_dst); |
| 1046 | c->srcFormatBpp = av_get_bits_per_pixel(desc_src); |
| 1047 | c->vRounder = 4 * 0x0001000100010001ULL; |
| 1048 | |
| 1049 | usesVFilter = (srcFilter->lumV && srcFilter->lumV->length > 1) || |
| 1050 | (srcFilter->chrV && srcFilter->chrV->length > 1) || |
| 1051 | (dstFilter->lumV && dstFilter->lumV->length > 1) || |
| 1052 | (dstFilter->chrV && dstFilter->chrV->length > 1); |
| 1053 | usesHFilter = (srcFilter->lumH && srcFilter->lumH->length > 1) || |
| 1054 | (srcFilter->chrH && srcFilter->chrH->length > 1) || |
| 1055 | (dstFilter->lumH && dstFilter->lumH->length > 1) || |
| 1056 | (dstFilter->chrH && dstFilter->chrH->length > 1); |
| 1057 | |
| 1058 | av_pix_fmt_get_chroma_sub_sample(srcFormat, &c->chrSrcHSubSample, &c->chrSrcVSubSample); |
| 1059 | av_pix_fmt_get_chroma_sub_sample(dstFormat, &c->chrDstHSubSample, &c->chrDstVSubSample); |
| 1060 | |
| 1061 | if (isAnyRGB(dstFormat) && !(flags&SWS_FULL_CHR_H_INT)) { |
| 1062 | if (dstW&1) { |
| 1063 | av_log(c, AV_LOG_DEBUG, "Forcing full internal H chroma due to odd output size\n"); |
| 1064 | flags |= SWS_FULL_CHR_H_INT; |
| 1065 | c->flags = flags; |
| 1066 | } |
| 1067 | |
| 1068 | if ( c->chrSrcHSubSample == 0 |
| 1069 | && c->chrSrcVSubSample == 0 |
| 1070 | && c->dither != SWS_DITHER_BAYER //SWS_FULL_CHR_H_INT is currently not supported with SWS_DITHER_BAYER |
| 1071 | && !(c->flags & SWS_FAST_BILINEAR) |
| 1072 | ) { |
| 1073 | av_log(c, AV_LOG_DEBUG, "Forcing full internal H chroma due to input having non subsampled chroma\n"); |
| 1074 | flags |= SWS_FULL_CHR_H_INT; |
| 1075 | c->flags = flags; |
| 1076 | } |
| 1077 | } |
| 1078 | |
| 1079 | if (c->dither == SWS_DITHER_AUTO) { |
| 1080 | if (flags & SWS_ERROR_DIFFUSION) |
| 1081 | c->dither = SWS_DITHER_ED; |
| 1082 | } |
| 1083 | |
| 1084 | if(dstFormat == AV_PIX_FMT_BGR4_BYTE || |
| 1085 | dstFormat == AV_PIX_FMT_RGB4_BYTE || |
| 1086 | dstFormat == AV_PIX_FMT_BGR8 || |
| 1087 | dstFormat == AV_PIX_FMT_RGB8) { |
| 1088 | if (c->dither == SWS_DITHER_AUTO) |
| 1089 | c->dither = (flags & SWS_FULL_CHR_H_INT) ? SWS_DITHER_ED : SWS_DITHER_BAYER; |
| 1090 | if (!(flags & SWS_FULL_CHR_H_INT)) { |
| 1091 | if (c->dither == SWS_DITHER_ED || c->dither == SWS_DITHER_A_DITHER || c->dither == SWS_DITHER_X_DITHER) { |
| 1092 | av_log(c, AV_LOG_DEBUG, |
| 1093 | "Desired dithering only supported in full chroma interpolation for destination format '%s'\n", |
| 1094 | av_get_pix_fmt_name(dstFormat)); |
| 1095 | flags |= SWS_FULL_CHR_H_INT; |
| 1096 | c->flags = flags; |
| 1097 | } |
| 1098 | } |
| 1099 | if (flags & SWS_FULL_CHR_H_INT) { |
| 1100 | if (c->dither == SWS_DITHER_BAYER) { |
| 1101 | av_log(c, AV_LOG_DEBUG, |
| 1102 | "Ordered dither is not supported in full chroma interpolation for destination format '%s'\n", |
| 1103 | av_get_pix_fmt_name(dstFormat)); |
| 1104 | c->dither = SWS_DITHER_ED; |
| 1105 | } |
| 1106 | } |
| 1107 | } |
| 1108 | if (isPlanarRGB(dstFormat)) { |
| 1109 | if (!(flags & SWS_FULL_CHR_H_INT)) { |
| 1110 | av_log(c, AV_LOG_DEBUG, |
| 1111 | "%s output is not supported with half chroma resolution, switching to full\n", |
| 1112 | av_get_pix_fmt_name(dstFormat)); |
| 1113 | flags |= SWS_FULL_CHR_H_INT; |
| 1114 | c->flags = flags; |
| 1115 | } |
| 1116 | } |
| 1117 | |
| 1118 | /* reuse chroma for 2 pixels RGB/BGR unless user wants full |
| 1119 | * chroma interpolation */ |
| 1120 | if (flags & SWS_FULL_CHR_H_INT && |
| 1121 | isAnyRGB(dstFormat) && |
| 1122 | !isPlanarRGB(dstFormat) && |
| 1123 | dstFormat != AV_PIX_FMT_RGBA && |
| 1124 | dstFormat != AV_PIX_FMT_ARGB && |
| 1125 | dstFormat != AV_PIX_FMT_BGRA && |
| 1126 | dstFormat != AV_PIX_FMT_ABGR && |
| 1127 | dstFormat != AV_PIX_FMT_RGB24 && |
| 1128 | dstFormat != AV_PIX_FMT_BGR24 && |
| 1129 | dstFormat != AV_PIX_FMT_BGR4_BYTE && |
| 1130 | dstFormat != AV_PIX_FMT_RGB4_BYTE && |
| 1131 | dstFormat != AV_PIX_FMT_BGR8 && |
| 1132 | dstFormat != AV_PIX_FMT_RGB8 |
| 1133 | ) { |
| 1134 | av_log(c, AV_LOG_WARNING, |
| 1135 | "full chroma interpolation for destination format '%s' not yet implemented\n", |
| 1136 | av_get_pix_fmt_name(dstFormat)); |
| 1137 | flags &= ~SWS_FULL_CHR_H_INT; |
| 1138 | c->flags = flags; |
| 1139 | } |
| 1140 | if (isAnyRGB(dstFormat) && !(flags & SWS_FULL_CHR_H_INT)) |
| 1141 | c->chrDstHSubSample = 1; |
| 1142 | |
| 1143 | // drop some chroma lines if the user wants it |
| 1144 | c->vChrDrop = (flags & SWS_SRC_V_CHR_DROP_MASK) >> |
| 1145 | SWS_SRC_V_CHR_DROP_SHIFT; |
| 1146 | c->chrSrcVSubSample += c->vChrDrop; |
| 1147 | |
| 1148 | /* drop every other pixel for chroma calculation unless user |
| 1149 | * wants full chroma */ |
| 1150 | if (isAnyRGB(srcFormat) && !(flags & SWS_FULL_CHR_H_INP) && |
| 1151 | srcFormat != AV_PIX_FMT_RGB8 && srcFormat != AV_PIX_FMT_BGR8 && |
| 1152 | srcFormat != AV_PIX_FMT_RGB4 && srcFormat != AV_PIX_FMT_BGR4 && |
| 1153 | srcFormat != AV_PIX_FMT_RGB4_BYTE && srcFormat != AV_PIX_FMT_BGR4_BYTE && |
| 1154 | srcFormat != AV_PIX_FMT_GBRP9BE && srcFormat != AV_PIX_FMT_GBRP9LE && |
| 1155 | srcFormat != AV_PIX_FMT_GBRP10BE && srcFormat != AV_PIX_FMT_GBRP10LE && |
| 1156 | srcFormat != AV_PIX_FMT_GBRP12BE && srcFormat != AV_PIX_FMT_GBRP12LE && |
| 1157 | srcFormat != AV_PIX_FMT_GBRP14BE && srcFormat != AV_PIX_FMT_GBRP14LE && |
| 1158 | srcFormat != AV_PIX_FMT_GBRP16BE && srcFormat != AV_PIX_FMT_GBRP16LE && |
| 1159 | ((dstW >> c->chrDstHSubSample) <= (srcW >> 1) || |
| 1160 | (flags & SWS_FAST_BILINEAR))) |
| 1161 | c->chrSrcHSubSample = 1; |
| 1162 | |
| 1163 | // Note the FF_CEIL_RSHIFT is so that we always round toward +inf. |
| 1164 | c->chrSrcW = FF_CEIL_RSHIFT(srcW, c->chrSrcHSubSample); |
| 1165 | c->chrSrcH = FF_CEIL_RSHIFT(srcH, c->chrSrcVSubSample); |
| 1166 | c->chrDstW = FF_CEIL_RSHIFT(dstW, c->chrDstHSubSample); |
| 1167 | c->chrDstH = FF_CEIL_RSHIFT(dstH, c->chrDstVSubSample); |
| 1168 | |
| 1169 | FF_ALLOC_OR_GOTO(c, c->formatConvBuffer, FFALIGN(srcW*2+78, 16) * 2, fail); |
| 1170 | |
| 1171 | c->srcBpc = 1 + desc_src->comp[0].depth_minus1; |
| 1172 | if (c->srcBpc < 8) |
| 1173 | c->srcBpc = 8; |
| 1174 | c->dstBpc = 1 + desc_dst->comp[0].depth_minus1; |
| 1175 | if (c->dstBpc < 8) |
| 1176 | c->dstBpc = 8; |
| 1177 | if (isAnyRGB(srcFormat) || srcFormat == AV_PIX_FMT_PAL8) |
| 1178 | c->srcBpc = 16; |
| 1179 | if (c->dstBpc == 16) |
| 1180 | dst_stride <<= 1; |
| 1181 | |
| 1182 | if (INLINE_MMXEXT(cpu_flags) && c->srcBpc == 8 && c->dstBpc <= 14) { |
| 1183 | c->canMMXEXTBeUsed = dstW >= srcW && (dstW & 31) == 0 && |
| 1184 | c->chrDstW >= c->chrSrcW && |
| 1185 | (srcW & 15) == 0; |
| 1186 | if (!c->canMMXEXTBeUsed && dstW >= srcW && c->chrDstW >= c->chrSrcW && (srcW & 15) == 0 |
| 1187 | |
| 1188 | && (flags & SWS_FAST_BILINEAR)) { |
| 1189 | if (flags & SWS_PRINT_INFO) |
| 1190 | av_log(c, AV_LOG_INFO, |
| 1191 | "output width is not a multiple of 32 -> no MMXEXT scaler\n"); |
| 1192 | } |
| 1193 | if (usesHFilter || isNBPS(c->srcFormat) || is16BPS(c->srcFormat) || isAnyRGB(c->srcFormat)) |
| 1194 | c->canMMXEXTBeUsed = 0; |
| 1195 | } else |
| 1196 | c->canMMXEXTBeUsed = 0; |
| 1197 | |
| 1198 | c->chrXInc = (((int64_t)c->chrSrcW << 16) + (c->chrDstW >> 1)) / c->chrDstW; |
| 1199 | c->chrYInc = (((int64_t)c->chrSrcH << 16) + (c->chrDstH >> 1)) / c->chrDstH; |
| 1200 | |
| 1201 | /* Match pixel 0 of the src to pixel 0 of dst and match pixel n-2 of src |
| 1202 | * to pixel n-2 of dst, but only for the FAST_BILINEAR mode otherwise do |
| 1203 | * correct scaling. |
| 1204 | * n-2 is the last chrominance sample available. |
| 1205 | * This is not perfect, but no one should notice the difference, the more |
| 1206 | * correct variant would be like the vertical one, but that would require |
| 1207 | * some special code for the first and last pixel */ |
| 1208 | if (flags & SWS_FAST_BILINEAR) { |
| 1209 | if (c->canMMXEXTBeUsed) { |
| 1210 | c->lumXInc += 20; |
| 1211 | c->chrXInc += 20; |
| 1212 | } |
| 1213 | // we don't use the x86 asm scaler if MMX is available |
| 1214 | else if (INLINE_MMX(cpu_flags) && c->dstBpc <= 14) { |
| 1215 | c->lumXInc = ((int64_t)(srcW - 2) << 16) / (dstW - 2) - 20; |
| 1216 | c->chrXInc = ((int64_t)(c->chrSrcW - 2) << 16) / (c->chrDstW - 2) - 20; |
| 1217 | } |
| 1218 | } |
| 1219 | |
| 1220 | if (isBayer(srcFormat)) { |
| 1221 | if (!unscaled || |
| 1222 | (dstFormat != AV_PIX_FMT_RGB24 && dstFormat != AV_PIX_FMT_YUV420P)) { |
| 1223 | enum AVPixelFormat tmpFormat = AV_PIX_FMT_RGB24; |
| 1224 | |
| 1225 | ret = av_image_alloc(c->cascaded_tmp, c->cascaded_tmpStride, |
| 1226 | srcW, srcH, tmpFormat, 64); |
| 1227 | if (ret < 0) |
| 1228 | return ret; |
| 1229 | |
| 1230 | c->cascaded_context[0] = sws_getContext(srcW, srcH, srcFormat, |
| 1231 | srcW, srcH, tmpFormat, |
| 1232 | flags, srcFilter, NULL, c->param); |
| 1233 | if (!c->cascaded_context[0]) |
| 1234 | return -1; |
| 1235 | |
| 1236 | c->cascaded_context[1] = sws_getContext(srcW, srcH, tmpFormat, |
| 1237 | dstW, dstH, dstFormat, |
| 1238 | flags, NULL, dstFilter, c->param); |
| 1239 | if (!c->cascaded_context[1]) |
| 1240 | return -1; |
| 1241 | return 0; |
| 1242 | } |
| 1243 | } |
| 1244 | |
| 1245 | #define USE_MMAP (HAVE_MMAP && HAVE_MPROTECT && defined MAP_ANONYMOUS) |
| 1246 | |
| 1247 | /* precalculate horizontal scaler filter coefficients */ |
| 1248 | { |
| 1249 | #if HAVE_MMXEXT_INLINE |
| 1250 | // can't downscale !!! |
| 1251 | if (c->canMMXEXTBeUsed && (flags & SWS_FAST_BILINEAR)) { |
| 1252 | c->lumMmxextFilterCodeSize = ff_init_hscaler_mmxext(dstW, c->lumXInc, NULL, |
| 1253 | NULL, NULL, 8); |
| 1254 | c->chrMmxextFilterCodeSize = ff_init_hscaler_mmxext(c->chrDstW, c->chrXInc, |
| 1255 | NULL, NULL, NULL, 4); |
| 1256 | |
| 1257 | #if USE_MMAP |
| 1258 | c->lumMmxextFilterCode = mmap(NULL, c->lumMmxextFilterCodeSize, |
| 1259 | PROT_READ | PROT_WRITE, |
| 1260 | MAP_PRIVATE | MAP_ANONYMOUS, |
| 1261 | -1, 0); |
| 1262 | c->chrMmxextFilterCode = mmap(NULL, c->chrMmxextFilterCodeSize, |
| 1263 | PROT_READ | PROT_WRITE, |
| 1264 | MAP_PRIVATE | MAP_ANONYMOUS, |
| 1265 | -1, 0); |
| 1266 | #elif HAVE_VIRTUALALLOC |
| 1267 | c->lumMmxextFilterCode = VirtualAlloc(NULL, |
| 1268 | c->lumMmxextFilterCodeSize, |
| 1269 | MEM_COMMIT, |
| 1270 | PAGE_EXECUTE_READWRITE); |
| 1271 | c->chrMmxextFilterCode = VirtualAlloc(NULL, |
| 1272 | c->chrMmxextFilterCodeSize, |
| 1273 | MEM_COMMIT, |
| 1274 | PAGE_EXECUTE_READWRITE); |
| 1275 | #else |
| 1276 | c->lumMmxextFilterCode = av_malloc(c->lumMmxextFilterCodeSize); |
| 1277 | c->chrMmxextFilterCode = av_malloc(c->chrMmxextFilterCodeSize); |
| 1278 | #endif |
| 1279 | |
| 1280 | #ifdef MAP_ANONYMOUS |
| 1281 | if (c->lumMmxextFilterCode == MAP_FAILED || c->chrMmxextFilterCode == MAP_FAILED) |
| 1282 | #else |
| 1283 | if (!c->lumMmxextFilterCode || !c->chrMmxextFilterCode) |
| 1284 | #endif |
| 1285 | { |
| 1286 | av_log(c, AV_LOG_ERROR, "Failed to allocate MMX2FilterCode\n"); |
| 1287 | return AVERROR(ENOMEM); |
| 1288 | } |
| 1289 | |
| 1290 | FF_ALLOCZ_OR_GOTO(c, c->hLumFilter, (dstW / 8 + 8) * sizeof(int16_t), fail); |
| 1291 | FF_ALLOCZ_OR_GOTO(c, c->hChrFilter, (c->chrDstW / 4 + 8) * sizeof(int16_t), fail); |
| 1292 | FF_ALLOCZ_OR_GOTO(c, c->hLumFilterPos, (dstW / 2 / 8 + 8) * sizeof(int32_t), fail); |
| 1293 | FF_ALLOCZ_OR_GOTO(c, c->hChrFilterPos, (c->chrDstW / 2 / 4 + 8) * sizeof(int32_t), fail); |
| 1294 | |
| 1295 | ff_init_hscaler_mmxext( dstW, c->lumXInc, c->lumMmxextFilterCode, |
| 1296 | c->hLumFilter, (uint32_t*)c->hLumFilterPos, 8); |
| 1297 | ff_init_hscaler_mmxext(c->chrDstW, c->chrXInc, c->chrMmxextFilterCode, |
| 1298 | c->hChrFilter, (uint32_t*)c->hChrFilterPos, 4); |
| 1299 | |
| 1300 | #if USE_MMAP |
| 1301 | if ( mprotect(c->lumMmxextFilterCode, c->lumMmxextFilterCodeSize, PROT_EXEC | PROT_READ) == -1 |
| 1302 | || mprotect(c->chrMmxextFilterCode, c->chrMmxextFilterCodeSize, PROT_EXEC | PROT_READ) == -1) { |
| 1303 | av_log(c, AV_LOG_ERROR, "mprotect failed, cannot use fast bilinear scaler\n"); |
| 1304 | goto fail; |
| 1305 | } |
| 1306 | #endif |
| 1307 | } else |
| 1308 | #endif /* HAVE_MMXEXT_INLINE */ |
| 1309 | { |
| 1310 | const int filterAlign = X86_MMX(cpu_flags) ? 4 : |
| 1311 | PPC_ALTIVEC(cpu_flags) ? 8 : 1; |
| 1312 | |
| 1313 | if ((ret = initFilter(&c->hLumFilter, &c->hLumFilterPos, |
| 1314 | &c->hLumFilterSize, c->lumXInc, |
| 1315 | srcW, dstW, filterAlign, 1 << 14, |
| 1316 | (flags & SWS_BICUBLIN) ? (flags | SWS_BICUBIC) : flags, |
| 1317 | cpu_flags, srcFilter->lumH, dstFilter->lumH, |
| 1318 | c->param, |
| 1319 | get_local_pos(c, 0, 0, 0), |
| 1320 | get_local_pos(c, 0, 0, 0))) < 0) |
| 1321 | goto fail; |
| 1322 | if ((ret = initFilter(&c->hChrFilter, &c->hChrFilterPos, |
| 1323 | &c->hChrFilterSize, c->chrXInc, |
| 1324 | c->chrSrcW, c->chrDstW, filterAlign, 1 << 14, |
| 1325 | (flags & SWS_BICUBLIN) ? (flags | SWS_BILINEAR) : flags, |
| 1326 | cpu_flags, srcFilter->chrH, dstFilter->chrH, |
| 1327 | c->param, |
| 1328 | get_local_pos(c, c->chrSrcHSubSample, c->src_h_chr_pos, 0), |
| 1329 | get_local_pos(c, c->chrDstHSubSample, c->dst_h_chr_pos, 0))) < 0) |
| 1330 | goto fail; |
| 1331 | } |
| 1332 | } // initialize horizontal stuff |
| 1333 | |
| 1334 | /* precalculate vertical scaler filter coefficients */ |
| 1335 | { |
| 1336 | const int filterAlign = X86_MMX(cpu_flags) ? 2 : |
| 1337 | PPC_ALTIVEC(cpu_flags) ? 8 : 1; |
| 1338 | |
| 1339 | if ((ret = initFilter(&c->vLumFilter, &c->vLumFilterPos, &c->vLumFilterSize, |
| 1340 | c->lumYInc, srcH, dstH, filterAlign, (1 << 12), |
| 1341 | (flags & SWS_BICUBLIN) ? (flags | SWS_BICUBIC) : flags, |
| 1342 | cpu_flags, srcFilter->lumV, dstFilter->lumV, |
| 1343 | c->param, |
| 1344 | get_local_pos(c, 0, 0, 1), |
| 1345 | get_local_pos(c, 0, 0, 1))) < 0) |
| 1346 | goto fail; |
| 1347 | if ((ret = initFilter(&c->vChrFilter, &c->vChrFilterPos, &c->vChrFilterSize, |
| 1348 | c->chrYInc, c->chrSrcH, c->chrDstH, |
| 1349 | filterAlign, (1 << 12), |
| 1350 | (flags & SWS_BICUBLIN) ? (flags | SWS_BILINEAR) : flags, |
| 1351 | cpu_flags, srcFilter->chrV, dstFilter->chrV, |
| 1352 | c->param, |
| 1353 | get_local_pos(c, c->chrSrcVSubSample, c->src_v_chr_pos, 1), |
| 1354 | get_local_pos(c, c->chrDstVSubSample, c->dst_v_chr_pos, 1))) < 0) |
| 1355 | |
| 1356 | goto fail; |
| 1357 | |
| 1358 | #if HAVE_ALTIVEC |
| 1359 | FF_ALLOC_OR_GOTO(c, c->vYCoeffsBank, sizeof(vector signed short) * c->vLumFilterSize * c->dstH, fail); |
| 1360 | FF_ALLOC_OR_GOTO(c, c->vCCoeffsBank, sizeof(vector signed short) * c->vChrFilterSize * c->chrDstH, fail); |
| 1361 | |
| 1362 | for (i = 0; i < c->vLumFilterSize * c->dstH; i++) { |
| 1363 | int j; |
| 1364 | short *p = (short *)&c->vYCoeffsBank[i]; |
| 1365 | for (j = 0; j < 8; j++) |
| 1366 | p[j] = c->vLumFilter[i]; |
| 1367 | } |
| 1368 | |
| 1369 | for (i = 0; i < c->vChrFilterSize * c->chrDstH; i++) { |
| 1370 | int j; |
| 1371 | short *p = (short *)&c->vCCoeffsBank[i]; |
| 1372 | for (j = 0; j < 8; j++) |
| 1373 | p[j] = c->vChrFilter[i]; |
| 1374 | } |
| 1375 | #endif |
| 1376 | } |
| 1377 | |
| 1378 | // calculate buffer sizes so that they won't run out while handling these damn slices |
| 1379 | c->vLumBufSize = c->vLumFilterSize; |
| 1380 | c->vChrBufSize = c->vChrFilterSize; |
| 1381 | for (i = 0; i < dstH; i++) { |
| 1382 | int chrI = (int64_t)i * c->chrDstH / dstH; |
| 1383 | int nextSlice = FFMAX(c->vLumFilterPos[i] + c->vLumFilterSize - 1, |
| 1384 | ((c->vChrFilterPos[chrI] + c->vChrFilterSize - 1) |
| 1385 | << c->chrSrcVSubSample)); |
| 1386 | |
| 1387 | nextSlice >>= c->chrSrcVSubSample; |
| 1388 | nextSlice <<= c->chrSrcVSubSample; |
| 1389 | if (c->vLumFilterPos[i] + c->vLumBufSize < nextSlice) |
| 1390 | c->vLumBufSize = nextSlice - c->vLumFilterPos[i]; |
| 1391 | if (c->vChrFilterPos[chrI] + c->vChrBufSize < |
| 1392 | (nextSlice >> c->chrSrcVSubSample)) |
| 1393 | c->vChrBufSize = (nextSlice >> c->chrSrcVSubSample) - |
| 1394 | c->vChrFilterPos[chrI]; |
| 1395 | } |
| 1396 | |
| 1397 | for (i = 0; i < 4; i++) |
| 1398 | FF_ALLOCZ_OR_GOTO(c, c->dither_error[i], (c->dstW+2) * sizeof(int), fail); |
| 1399 | |
| 1400 | /* Allocate pixbufs (we use dynamic allocation because otherwise we would |
| 1401 | * need to allocate several megabytes to handle all possible cases) */ |
| 1402 | FF_ALLOC_OR_GOTO(c, c->lumPixBuf, c->vLumBufSize * 3 * sizeof(int16_t *), fail); |
| 1403 | FF_ALLOC_OR_GOTO(c, c->chrUPixBuf, c->vChrBufSize * 3 * sizeof(int16_t *), fail); |
| 1404 | FF_ALLOC_OR_GOTO(c, c->chrVPixBuf, c->vChrBufSize * 3 * sizeof(int16_t *), fail); |
| 1405 | if (CONFIG_SWSCALE_ALPHA && isALPHA(c->srcFormat) && isALPHA(c->dstFormat)) |
| 1406 | FF_ALLOCZ_OR_GOTO(c, c->alpPixBuf, c->vLumBufSize * 3 * sizeof(int16_t *), fail); |
| 1407 | /* Note we need at least one pixel more at the end because of the MMX code |
| 1408 | * (just in case someone wants to replace the 4000/8000). */ |
| 1409 | /* align at 16 bytes for AltiVec */ |
| 1410 | for (i = 0; i < c->vLumBufSize; i++) { |
| 1411 | FF_ALLOCZ_OR_GOTO(c, c->lumPixBuf[i + c->vLumBufSize], |
| 1412 | dst_stride + 16, fail); |
| 1413 | c->lumPixBuf[i] = c->lumPixBuf[i + c->vLumBufSize]; |
| 1414 | } |
| 1415 | // 64 / c->scalingBpp is the same as 16 / sizeof(scaling_intermediate) |
| 1416 | c->uv_off = (dst_stride>>1) + 64 / (c->dstBpc &~ 7); |
| 1417 | c->uv_offx2 = dst_stride + 16; |
| 1418 | for (i = 0; i < c->vChrBufSize; i++) { |
| 1419 | FF_ALLOC_OR_GOTO(c, c->chrUPixBuf[i + c->vChrBufSize], |
| 1420 | dst_stride * 2 + 32, fail); |
| 1421 | c->chrUPixBuf[i] = c->chrUPixBuf[i + c->vChrBufSize]; |
| 1422 | c->chrVPixBuf[i] = c->chrVPixBuf[i + c->vChrBufSize] |
| 1423 | = c->chrUPixBuf[i] + (dst_stride >> 1) + 8; |
| 1424 | } |
| 1425 | if (CONFIG_SWSCALE_ALPHA && c->alpPixBuf) |
| 1426 | for (i = 0; i < c->vLumBufSize; i++) { |
| 1427 | FF_ALLOCZ_OR_GOTO(c, c->alpPixBuf[i + c->vLumBufSize], |
| 1428 | dst_stride + 16, fail); |
| 1429 | c->alpPixBuf[i] = c->alpPixBuf[i + c->vLumBufSize]; |
| 1430 | } |
| 1431 | |
| 1432 | // try to avoid drawing green stuff between the right end and the stride end |
| 1433 | for (i = 0; i < c->vChrBufSize; i++) |
| 1434 | if(desc_dst->comp[0].depth_minus1 == 15){ |
| 1435 | av_assert0(c->dstBpc > 14); |
| 1436 | for(j=0; j<dst_stride/2+1; j++) |
| 1437 | ((int32_t*)(c->chrUPixBuf[i]))[j] = 1<<18; |
| 1438 | } else |
| 1439 | for(j=0; j<dst_stride+1; j++) |
| 1440 | ((int16_t*)(c->chrUPixBuf[i]))[j] = 1<<14; |
| 1441 | |
| 1442 | av_assert0(c->chrDstH <= dstH); |
| 1443 | |
| 1444 | if (flags & SWS_PRINT_INFO) { |
| 1445 | const char *scaler = NULL, *cpucaps; |
| 1446 | |
| 1447 | for (i = 0; i < FF_ARRAY_ELEMS(scale_algorithms); i++) { |
| 1448 | if (flags & scale_algorithms[i].flag) { |
| 1449 | scaler = scale_algorithms[i].description; |
| 1450 | break; |
| 1451 | } |
| 1452 | } |
| 1453 | if (!scaler) |
| 1454 | scaler = "ehh flags invalid?!"; |
| 1455 | av_log(c, AV_LOG_INFO, "%s scaler, from %s to %s%s ", |
| 1456 | scaler, |
| 1457 | av_get_pix_fmt_name(srcFormat), |
| 1458 | #ifdef DITHER1XBPP |
| 1459 | dstFormat == AV_PIX_FMT_BGR555 || dstFormat == AV_PIX_FMT_BGR565 || |
| 1460 | dstFormat == AV_PIX_FMT_RGB444BE || dstFormat == AV_PIX_FMT_RGB444LE || |
| 1461 | dstFormat == AV_PIX_FMT_BGR444BE || dstFormat == AV_PIX_FMT_BGR444LE ? |
| 1462 | "dithered " : "", |
| 1463 | #else |
| 1464 | "", |
| 1465 | #endif |
| 1466 | av_get_pix_fmt_name(dstFormat)); |
| 1467 | |
| 1468 | if (INLINE_MMXEXT(cpu_flags)) |
| 1469 | cpucaps = "MMXEXT"; |
| 1470 | else if (INLINE_AMD3DNOW(cpu_flags)) |
| 1471 | cpucaps = "3DNOW"; |
| 1472 | else if (INLINE_MMX(cpu_flags)) |
| 1473 | cpucaps = "MMX"; |
| 1474 | else if (PPC_ALTIVEC(cpu_flags)) |
| 1475 | cpucaps = "AltiVec"; |
| 1476 | else |
| 1477 | cpucaps = "C"; |
| 1478 | |
| 1479 | av_log(c, AV_LOG_INFO, "using %s\n", cpucaps); |
| 1480 | |
| 1481 | av_log(c, AV_LOG_VERBOSE, "%dx%d -> %dx%d\n", srcW, srcH, dstW, dstH); |
| 1482 | av_log(c, AV_LOG_DEBUG, |
| 1483 | "lum srcW=%d srcH=%d dstW=%d dstH=%d xInc=%d yInc=%d\n", |
| 1484 | c->srcW, c->srcH, c->dstW, c->dstH, c->lumXInc, c->lumYInc); |
| 1485 | av_log(c, AV_LOG_DEBUG, |
| 1486 | "chr srcW=%d srcH=%d dstW=%d dstH=%d xInc=%d yInc=%d\n", |
| 1487 | c->chrSrcW, c->chrSrcH, c->chrDstW, c->chrDstH, |
| 1488 | c->chrXInc, c->chrYInc); |
| 1489 | } |
| 1490 | |
| 1491 | /* unscaled special cases */ |
| 1492 | if (unscaled && !usesHFilter && !usesVFilter && |
| 1493 | (c->srcRange == c->dstRange || isAnyRGB(dstFormat))) { |
| 1494 | ff_get_unscaled_swscale(c); |
| 1495 | |
| 1496 | if (c->swscale) { |
| 1497 | if (flags & SWS_PRINT_INFO) |
| 1498 | av_log(c, AV_LOG_INFO, |
| 1499 | "using unscaled %s -> %s special converter\n", |
| 1500 | av_get_pix_fmt_name(srcFormat), av_get_pix_fmt_name(dstFormat)); |
| 1501 | return 0; |
| 1502 | } |
| 1503 | } |
| 1504 | |
| 1505 | c->swscale = ff_getSwsFunc(c); |
| 1506 | return 0; |
| 1507 | fail: // FIXME replace things by appropriate error codes |
| 1508 | if (ret == RETCODE_USE_CASCADE) { |
| 1509 | int tmpW = sqrt(srcW * (int64_t)dstW); |
| 1510 | int tmpH = sqrt(srcH * (int64_t)dstH); |
| 1511 | enum AVPixelFormat tmpFormat = AV_PIX_FMT_YUV420P; |
| 1512 | |
| 1513 | if (srcW*(int64_t)srcH <= 4LL*dstW*dstH) |
| 1514 | return AVERROR(EINVAL); |
| 1515 | |
| 1516 | ret = av_image_alloc(c->cascaded_tmp, c->cascaded_tmpStride, |
| 1517 | tmpW, tmpH, tmpFormat, 64); |
| 1518 | if (ret < 0) |
| 1519 | return ret; |
| 1520 | |
| 1521 | c->cascaded_context[0] = sws_getContext(srcW, srcH, srcFormat, |
| 1522 | tmpW, tmpH, tmpFormat, |
| 1523 | flags, srcFilter, NULL, c->param); |
| 1524 | if (!c->cascaded_context[0]) |
| 1525 | return -1; |
| 1526 | |
| 1527 | c->cascaded_context[1] = sws_getContext(tmpW, tmpH, tmpFormat, |
| 1528 | dstW, dstH, dstFormat, |
| 1529 | flags, NULL, dstFilter, c->param); |
| 1530 | if (!c->cascaded_context[1]) |
| 1531 | return -1; |
| 1532 | return 0; |
| 1533 | } |
| 1534 | return -1; |
| 1535 | } |
| 1536 | |
| 1537 | SwsContext *sws_getContext(int srcW, int srcH, enum AVPixelFormat srcFormat, |
| 1538 | int dstW, int dstH, enum AVPixelFormat dstFormat, |
| 1539 | int flags, SwsFilter *srcFilter, |
| 1540 | SwsFilter *dstFilter, const double *param) |
| 1541 | { |
| 1542 | SwsContext *c; |
| 1543 | |
| 1544 | if (!(c = sws_alloc_context())) |
| 1545 | return NULL; |
| 1546 | |
| 1547 | c->flags = flags; |
| 1548 | c->srcW = srcW; |
| 1549 | c->srcH = srcH; |
| 1550 | c->dstW = dstW; |
| 1551 | c->dstH = dstH; |
| 1552 | c->srcFormat = srcFormat; |
| 1553 | c->dstFormat = dstFormat; |
| 1554 | |
| 1555 | if (param) { |
| 1556 | c->param[0] = param[0]; |
| 1557 | c->param[1] = param[1]; |
| 1558 | } |
| 1559 | |
| 1560 | if (sws_init_context(c, srcFilter, dstFilter) < 0) { |
| 1561 | sws_freeContext(c); |
| 1562 | return NULL; |
| 1563 | } |
| 1564 | |
| 1565 | return c; |
| 1566 | } |
| 1567 | |
| 1568 | SwsFilter *sws_getDefaultFilter(float lumaGBlur, float chromaGBlur, |
| 1569 | float lumaSharpen, float chromaSharpen, |
| 1570 | float chromaHShift, float chromaVShift, |
| 1571 | int verbose) |
| 1572 | { |
| 1573 | SwsFilter *filter = av_malloc(sizeof(SwsFilter)); |
| 1574 | if (!filter) |
| 1575 | return NULL; |
| 1576 | |
| 1577 | if (lumaGBlur != 0.0) { |
| 1578 | filter->lumH = sws_getGaussianVec(lumaGBlur, 3.0); |
| 1579 | filter->lumV = sws_getGaussianVec(lumaGBlur, 3.0); |
| 1580 | } else { |
| 1581 | filter->lumH = sws_getIdentityVec(); |
| 1582 | filter->lumV = sws_getIdentityVec(); |
| 1583 | } |
| 1584 | |
| 1585 | if (chromaGBlur != 0.0) { |
| 1586 | filter->chrH = sws_getGaussianVec(chromaGBlur, 3.0); |
| 1587 | filter->chrV = sws_getGaussianVec(chromaGBlur, 3.0); |
| 1588 | } else { |
| 1589 | filter->chrH = sws_getIdentityVec(); |
| 1590 | filter->chrV = sws_getIdentityVec(); |
| 1591 | } |
| 1592 | |
| 1593 | if (chromaSharpen != 0.0) { |
| 1594 | SwsVector *id = sws_getIdentityVec(); |
| 1595 | sws_scaleVec(filter->chrH, -chromaSharpen); |
| 1596 | sws_scaleVec(filter->chrV, -chromaSharpen); |
| 1597 | sws_addVec(filter->chrH, id); |
| 1598 | sws_addVec(filter->chrV, id); |
| 1599 | sws_freeVec(id); |
| 1600 | } |
| 1601 | |
| 1602 | if (lumaSharpen != 0.0) { |
| 1603 | SwsVector *id = sws_getIdentityVec(); |
| 1604 | sws_scaleVec(filter->lumH, -lumaSharpen); |
| 1605 | sws_scaleVec(filter->lumV, -lumaSharpen); |
| 1606 | sws_addVec(filter->lumH, id); |
| 1607 | sws_addVec(filter->lumV, id); |
| 1608 | sws_freeVec(id); |
| 1609 | } |
| 1610 | |
| 1611 | if (chromaHShift != 0.0) |
| 1612 | sws_shiftVec(filter->chrH, (int)(chromaHShift + 0.5)); |
| 1613 | |
| 1614 | if (chromaVShift != 0.0) |
| 1615 | sws_shiftVec(filter->chrV, (int)(chromaVShift + 0.5)); |
| 1616 | |
| 1617 | sws_normalizeVec(filter->chrH, 1.0); |
| 1618 | sws_normalizeVec(filter->chrV, 1.0); |
| 1619 | sws_normalizeVec(filter->lumH, 1.0); |
| 1620 | sws_normalizeVec(filter->lumV, 1.0); |
| 1621 | |
| 1622 | if (verbose) |
| 1623 | sws_printVec2(filter->chrH, NULL, AV_LOG_DEBUG); |
| 1624 | if (verbose) |
| 1625 | sws_printVec2(filter->lumH, NULL, AV_LOG_DEBUG); |
| 1626 | |
| 1627 | return filter; |
| 1628 | } |
| 1629 | |
| 1630 | SwsVector *sws_allocVec(int length) |
| 1631 | { |
| 1632 | SwsVector *vec; |
| 1633 | |
| 1634 | if(length <= 0 || length > INT_MAX/ sizeof(double)) |
| 1635 | return NULL; |
| 1636 | |
| 1637 | vec = av_malloc(sizeof(SwsVector)); |
| 1638 | if (!vec) |
| 1639 | return NULL; |
| 1640 | vec->length = length; |
| 1641 | vec->coeff = av_malloc(sizeof(double) * length); |
| 1642 | if (!vec->coeff) |
| 1643 | av_freep(&vec); |
| 1644 | return vec; |
| 1645 | } |
| 1646 | |
| 1647 | SwsVector *sws_getGaussianVec(double variance, double quality) |
| 1648 | { |
| 1649 | const int length = (int)(variance * quality + 0.5) | 1; |
| 1650 | int i; |
| 1651 | double middle = (length - 1) * 0.5; |
| 1652 | SwsVector *vec; |
| 1653 | |
| 1654 | if(variance < 0 || quality < 0) |
| 1655 | return NULL; |
| 1656 | |
| 1657 | vec = sws_allocVec(length); |
| 1658 | |
| 1659 | if (!vec) |
| 1660 | return NULL; |
| 1661 | |
| 1662 | for (i = 0; i < length; i++) { |
| 1663 | double dist = i - middle; |
| 1664 | vec->coeff[i] = exp(-dist * dist / (2 * variance * variance)) / |
| 1665 | sqrt(2 * variance * M_PI); |
| 1666 | } |
| 1667 | |
| 1668 | sws_normalizeVec(vec, 1.0); |
| 1669 | |
| 1670 | return vec; |
| 1671 | } |
| 1672 | |
| 1673 | SwsVector *sws_getConstVec(double c, int length) |
| 1674 | { |
| 1675 | int i; |
| 1676 | SwsVector *vec = sws_allocVec(length); |
| 1677 | |
| 1678 | if (!vec) |
| 1679 | return NULL; |
| 1680 | |
| 1681 | for (i = 0; i < length; i++) |
| 1682 | vec->coeff[i] = c; |
| 1683 | |
| 1684 | return vec; |
| 1685 | } |
| 1686 | |
| 1687 | SwsVector *sws_getIdentityVec(void) |
| 1688 | { |
| 1689 | return sws_getConstVec(1.0, 1); |
| 1690 | } |
| 1691 | |
| 1692 | static double sws_dcVec(SwsVector *a) |
| 1693 | { |
| 1694 | int i; |
| 1695 | double sum = 0; |
| 1696 | |
| 1697 | for (i = 0; i < a->length; i++) |
| 1698 | sum += a->coeff[i]; |
| 1699 | |
| 1700 | return sum; |
| 1701 | } |
| 1702 | |
| 1703 | void sws_scaleVec(SwsVector *a, double scalar) |
| 1704 | { |
| 1705 | int i; |
| 1706 | |
| 1707 | for (i = 0; i < a->length; i++) |
| 1708 | a->coeff[i] *= scalar; |
| 1709 | } |
| 1710 | |
| 1711 | void sws_normalizeVec(SwsVector *a, double height) |
| 1712 | { |
| 1713 | sws_scaleVec(a, height / sws_dcVec(a)); |
| 1714 | } |
| 1715 | |
| 1716 | static SwsVector *sws_getConvVec(SwsVector *a, SwsVector *b) |
| 1717 | { |
| 1718 | int length = a->length + b->length - 1; |
| 1719 | int i, j; |
| 1720 | SwsVector *vec = sws_getConstVec(0.0, length); |
| 1721 | |
| 1722 | if (!vec) |
| 1723 | return NULL; |
| 1724 | |
| 1725 | for (i = 0; i < a->length; i++) { |
| 1726 | for (j = 0; j < b->length; j++) { |
| 1727 | vec->coeff[i + j] += a->coeff[i] * b->coeff[j]; |
| 1728 | } |
| 1729 | } |
| 1730 | |
| 1731 | return vec; |
| 1732 | } |
| 1733 | |
| 1734 | static SwsVector *sws_sumVec(SwsVector *a, SwsVector *b) |
| 1735 | { |
| 1736 | int length = FFMAX(a->length, b->length); |
| 1737 | int i; |
| 1738 | SwsVector *vec = sws_getConstVec(0.0, length); |
| 1739 | |
| 1740 | if (!vec) |
| 1741 | return NULL; |
| 1742 | |
| 1743 | for (i = 0; i < a->length; i++) |
| 1744 | vec->coeff[i + (length - 1) / 2 - (a->length - 1) / 2] += a->coeff[i]; |
| 1745 | for (i = 0; i < b->length; i++) |
| 1746 | vec->coeff[i + (length - 1) / 2 - (b->length - 1) / 2] += b->coeff[i]; |
| 1747 | |
| 1748 | return vec; |
| 1749 | } |
| 1750 | |
| 1751 | static SwsVector *sws_diffVec(SwsVector *a, SwsVector *b) |
| 1752 | { |
| 1753 | int length = FFMAX(a->length, b->length); |
| 1754 | int i; |
| 1755 | SwsVector *vec = sws_getConstVec(0.0, length); |
| 1756 | |
| 1757 | if (!vec) |
| 1758 | return NULL; |
| 1759 | |
| 1760 | for (i = 0; i < a->length; i++) |
| 1761 | vec->coeff[i + (length - 1) / 2 - (a->length - 1) / 2] += a->coeff[i]; |
| 1762 | for (i = 0; i < b->length; i++) |
| 1763 | vec->coeff[i + (length - 1) / 2 - (b->length - 1) / 2] -= b->coeff[i]; |
| 1764 | |
| 1765 | return vec; |
| 1766 | } |
| 1767 | |
| 1768 | /* shift left / or right if "shift" is negative */ |
| 1769 | static SwsVector *sws_getShiftedVec(SwsVector *a, int shift) |
| 1770 | { |
| 1771 | int length = a->length + FFABS(shift) * 2; |
| 1772 | int i; |
| 1773 | SwsVector *vec = sws_getConstVec(0.0, length); |
| 1774 | |
| 1775 | if (!vec) |
| 1776 | return NULL; |
| 1777 | |
| 1778 | for (i = 0; i < a->length; i++) { |
| 1779 | vec->coeff[i + (length - 1) / 2 - |
| 1780 | (a->length - 1) / 2 - shift] = a->coeff[i]; |
| 1781 | } |
| 1782 | |
| 1783 | return vec; |
| 1784 | } |
| 1785 | |
| 1786 | void sws_shiftVec(SwsVector *a, int shift) |
| 1787 | { |
| 1788 | SwsVector *shifted = sws_getShiftedVec(a, shift); |
| 1789 | av_free(a->coeff); |
| 1790 | a->coeff = shifted->coeff; |
| 1791 | a->length = shifted->length; |
| 1792 | av_free(shifted); |
| 1793 | } |
| 1794 | |
| 1795 | void sws_addVec(SwsVector *a, SwsVector *b) |
| 1796 | { |
| 1797 | SwsVector *sum = sws_sumVec(a, b); |
| 1798 | av_free(a->coeff); |
| 1799 | a->coeff = sum->coeff; |
| 1800 | a->length = sum->length; |
| 1801 | av_free(sum); |
| 1802 | } |
| 1803 | |
| 1804 | void sws_subVec(SwsVector *a, SwsVector *b) |
| 1805 | { |
| 1806 | SwsVector *diff = sws_diffVec(a, b); |
| 1807 | av_free(a->coeff); |
| 1808 | a->coeff = diff->coeff; |
| 1809 | a->length = diff->length; |
| 1810 | av_free(diff); |
| 1811 | } |
| 1812 | |
| 1813 | void sws_convVec(SwsVector *a, SwsVector *b) |
| 1814 | { |
| 1815 | SwsVector *conv = sws_getConvVec(a, b); |
| 1816 | av_free(a->coeff); |
| 1817 | a->coeff = conv->coeff; |
| 1818 | a->length = conv->length; |
| 1819 | av_free(conv); |
| 1820 | } |
| 1821 | |
| 1822 | SwsVector *sws_cloneVec(SwsVector *a) |
| 1823 | { |
| 1824 | SwsVector *vec = sws_allocVec(a->length); |
| 1825 | |
| 1826 | if (!vec) |
| 1827 | return NULL; |
| 1828 | |
| 1829 | memcpy(vec->coeff, a->coeff, a->length * sizeof(*a->coeff)); |
| 1830 | |
| 1831 | return vec; |
| 1832 | } |
| 1833 | |
| 1834 | void sws_printVec2(SwsVector *a, AVClass *log_ctx, int log_level) |
| 1835 | { |
| 1836 | int i; |
| 1837 | double max = 0; |
| 1838 | double min = 0; |
| 1839 | double range; |
| 1840 | |
| 1841 | for (i = 0; i < a->length; i++) |
| 1842 | if (a->coeff[i] > max) |
| 1843 | max = a->coeff[i]; |
| 1844 | |
| 1845 | for (i = 0; i < a->length; i++) |
| 1846 | if (a->coeff[i] < min) |
| 1847 | min = a->coeff[i]; |
| 1848 | |
| 1849 | range = max - min; |
| 1850 | |
| 1851 | for (i = 0; i < a->length; i++) { |
| 1852 | int x = (int)((a->coeff[i] - min) * 60.0 / range + 0.5); |
| 1853 | av_log(log_ctx, log_level, "%1.3f ", a->coeff[i]); |
| 1854 | for (; x > 0; x--) |
| 1855 | av_log(log_ctx, log_level, " "); |
| 1856 | av_log(log_ctx, log_level, "|\n"); |
| 1857 | } |
| 1858 | } |
| 1859 | |
| 1860 | void sws_freeVec(SwsVector *a) |
| 1861 | { |
| 1862 | if (!a) |
| 1863 | return; |
| 1864 | av_freep(&a->coeff); |
| 1865 | a->length = 0; |
| 1866 | av_free(a); |
| 1867 | } |
| 1868 | |
| 1869 | void sws_freeFilter(SwsFilter *filter) |
| 1870 | { |
| 1871 | if (!filter) |
| 1872 | return; |
| 1873 | |
| 1874 | sws_freeVec(filter->lumH); |
| 1875 | sws_freeVec(filter->lumV); |
| 1876 | sws_freeVec(filter->chrH); |
| 1877 | sws_freeVec(filter->chrV); |
| 1878 | av_free(filter); |
| 1879 | } |
| 1880 | |
| 1881 | void sws_freeContext(SwsContext *c) |
| 1882 | { |
| 1883 | int i; |
| 1884 | if (!c) |
| 1885 | return; |
| 1886 | |
| 1887 | if (c->lumPixBuf) { |
| 1888 | for (i = 0; i < c->vLumBufSize; i++) |
| 1889 | av_freep(&c->lumPixBuf[i]); |
| 1890 | av_freep(&c->lumPixBuf); |
| 1891 | } |
| 1892 | |
| 1893 | if (c->chrUPixBuf) { |
| 1894 | for (i = 0; i < c->vChrBufSize; i++) |
| 1895 | av_freep(&c->chrUPixBuf[i]); |
| 1896 | av_freep(&c->chrUPixBuf); |
| 1897 | av_freep(&c->chrVPixBuf); |
| 1898 | } |
| 1899 | |
| 1900 | if (CONFIG_SWSCALE_ALPHA && c->alpPixBuf) { |
| 1901 | for (i = 0; i < c->vLumBufSize; i++) |
| 1902 | av_freep(&c->alpPixBuf[i]); |
| 1903 | av_freep(&c->alpPixBuf); |
| 1904 | } |
| 1905 | |
| 1906 | for (i = 0; i < 4; i++) |
| 1907 | av_freep(&c->dither_error[i]); |
| 1908 | |
| 1909 | av_freep(&c->vLumFilter); |
| 1910 | av_freep(&c->vChrFilter); |
| 1911 | av_freep(&c->hLumFilter); |
| 1912 | av_freep(&c->hChrFilter); |
| 1913 | #if HAVE_ALTIVEC |
| 1914 | av_freep(&c->vYCoeffsBank); |
| 1915 | av_freep(&c->vCCoeffsBank); |
| 1916 | #endif |
| 1917 | |
| 1918 | av_freep(&c->vLumFilterPos); |
| 1919 | av_freep(&c->vChrFilterPos); |
| 1920 | av_freep(&c->hLumFilterPos); |
| 1921 | av_freep(&c->hChrFilterPos); |
| 1922 | |
| 1923 | #if HAVE_MMX_INLINE |
| 1924 | #if USE_MMAP |
| 1925 | if (c->lumMmxextFilterCode) |
| 1926 | munmap(c->lumMmxextFilterCode, c->lumMmxextFilterCodeSize); |
| 1927 | if (c->chrMmxextFilterCode) |
| 1928 | munmap(c->chrMmxextFilterCode, c->chrMmxextFilterCodeSize); |
| 1929 | #elif HAVE_VIRTUALALLOC |
| 1930 | if (c->lumMmxextFilterCode) |
| 1931 | VirtualFree(c->lumMmxextFilterCode, 0, MEM_RELEASE); |
| 1932 | if (c->chrMmxextFilterCode) |
| 1933 | VirtualFree(c->chrMmxextFilterCode, 0, MEM_RELEASE); |
| 1934 | #else |
| 1935 | av_free(c->lumMmxextFilterCode); |
| 1936 | av_free(c->chrMmxextFilterCode); |
| 1937 | #endif |
| 1938 | c->lumMmxextFilterCode = NULL; |
| 1939 | c->chrMmxextFilterCode = NULL; |
| 1940 | #endif /* HAVE_MMX_INLINE */ |
| 1941 | |
| 1942 | av_freep(&c->yuvTable); |
| 1943 | av_freep(&c->formatConvBuffer); |
| 1944 | |
| 1945 | sws_freeContext(c->cascaded_context[0]); |
| 1946 | sws_freeContext(c->cascaded_context[1]); |
| 1947 | memset(c->cascaded_context, 0, sizeof(c->cascaded_context)); |
| 1948 | av_freep(&c->cascaded_tmp[0]); |
| 1949 | |
| 1950 | av_free(c); |
| 1951 | } |
| 1952 | |
| 1953 | struct SwsContext *sws_getCachedContext(struct SwsContext *context, int srcW, |
| 1954 | int srcH, enum AVPixelFormat srcFormat, |
| 1955 | int dstW, int dstH, |
| 1956 | enum AVPixelFormat dstFormat, int flags, |
| 1957 | SwsFilter *srcFilter, |
| 1958 | SwsFilter *dstFilter, |
| 1959 | const double *param) |
| 1960 | { |
| 1961 | static const double default_param[2] = { SWS_PARAM_DEFAULT, |
| 1962 | SWS_PARAM_DEFAULT }; |
| 1963 | |
| 1964 | if (!param) |
| 1965 | param = default_param; |
| 1966 | |
| 1967 | if (context && |
| 1968 | (context->srcW != srcW || |
| 1969 | context->srcH != srcH || |
| 1970 | context->srcFormat != srcFormat || |
| 1971 | context->dstW != dstW || |
| 1972 | context->dstH != dstH || |
| 1973 | context->dstFormat != dstFormat || |
| 1974 | context->flags != flags || |
| 1975 | context->param[0] != param[0] || |
| 1976 | context->param[1] != param[1])) { |
| 1977 | sws_freeContext(context); |
| 1978 | context = NULL; |
| 1979 | } |
| 1980 | |
| 1981 | if (!context) { |
| 1982 | if (!(context = sws_alloc_context())) |
| 1983 | return NULL; |
| 1984 | context->srcW = srcW; |
| 1985 | context->srcH = srcH; |
| 1986 | context->srcFormat = srcFormat; |
| 1987 | context->dstW = dstW; |
| 1988 | context->dstH = dstH; |
| 1989 | context->dstFormat = dstFormat; |
| 1990 | context->flags = flags; |
| 1991 | context->param[0] = param[0]; |
| 1992 | context->param[1] = param[1]; |
| 1993 | if (sws_init_context(context, srcFilter, dstFilter) < 0) { |
| 1994 | sws_freeContext(context); |
| 1995 | return NULL; |
| 1996 | } |
| 1997 | } |
| 1998 | return context; |
| 1999 | } |