00001 /* 00002 * Copyright (C) 2001-2011 Michael Niedermayer <michaelni@gmx.at> 00003 * 00004 * This file is part of FFmpeg. 00005 * 00006 * FFmpeg is free software; you can redistribute it and/or 00007 * modify it under the terms of the GNU Lesser General Public 00008 * License as published by the Free Software Foundation; either 00009 * version 2.1 of the License, or (at your option) any later version. 00010 * 00011 * FFmpeg is distributed in the hope that it will be useful, 00012 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00013 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00014 * Lesser General Public License for more details. 00015 * 00016 * You should have received a copy of the GNU Lesser General Public 00017 * License along with FFmpeg; if not, write to the Free Software 00018 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 00019 */ 00020 00021 #ifndef SWSCALE_SWSCALE_H 00022 #define SWSCALE_SWSCALE_H 00023 00030 #include "libavutil/avutil.h" 00031 #include "libavutil/log.h" 00032 #include "libavutil/pixfmt.h" 00033 00034 #define LIBSWSCALE_VERSION_MAJOR 2 00035 #define LIBSWSCALE_VERSION_MINOR 1 00036 #define LIBSWSCALE_VERSION_MICRO 0 00037 00038 #define LIBSWSCALE_VERSION_INT AV_VERSION_INT(LIBSWSCALE_VERSION_MAJOR, \ 00039 LIBSWSCALE_VERSION_MINOR, \ 00040 LIBSWSCALE_VERSION_MICRO) 00041 #define LIBSWSCALE_VERSION AV_VERSION(LIBSWSCALE_VERSION_MAJOR, \ 00042 LIBSWSCALE_VERSION_MINOR, \ 00043 LIBSWSCALE_VERSION_MICRO) 00044 #define LIBSWSCALE_BUILD LIBSWSCALE_VERSION_INT 00045 00046 #define LIBSWSCALE_IDENT "SwS" AV_STRINGIFY(LIBSWSCALE_VERSION) 00047 00052 #ifndef FF_API_SWS_GETCONTEXT 00053 #define FF_API_SWS_GETCONTEXT (LIBSWSCALE_VERSION_MAJOR < 3) 00054 #endif 00055 #ifndef FF_API_SWS_CPU_CAPS 00056 #define FF_API_SWS_CPU_CAPS (LIBSWSCALE_VERSION_MAJOR < 3) 00057 #endif 00058 #ifndef FF_API_SWS_FORMAT_NAME 00059 #define FF_API_SWS_FORMAT_NAME (LIBSWSCALE_VERSION_MAJOR < 3) 00060 #endif 00061 00065 unsigned swscale_version(void); 00066 00070 const char *swscale_configuration(void); 00071 00075 const char *swscale_license(void); 00076 00077 /* values for the flags, the stuff on the command line is different */ 00078 #define SWS_FAST_BILINEAR 1 00079 #define SWS_BILINEAR 2 00080 #define SWS_BICUBIC 4 00081 #define SWS_X 8 00082 #define SWS_POINT 0x10 00083 #define SWS_AREA 0x20 00084 #define SWS_BICUBLIN 0x40 00085 #define SWS_GAUSS 0x80 00086 #define SWS_SINC 0x100 00087 #define SWS_LANCZOS 0x200 00088 #define SWS_SPLINE 0x400 00089 00090 #define SWS_SRC_V_CHR_DROP_MASK 0x30000 00091 #define SWS_SRC_V_CHR_DROP_SHIFT 16 00092 00093 #define SWS_PARAM_DEFAULT 123456 00094 00095 #define SWS_PRINT_INFO 0x1000 00096 00097 //the following 3 flags are not completely implemented 00098 //internal chrominace subsampling info 00099 #define SWS_FULL_CHR_H_INT 0x2000 00100 //input subsampling info 00101 #define SWS_FULL_CHR_H_INP 0x4000 00102 #define SWS_DIRECT_BGR 0x8000 00103 #define SWS_ACCURATE_RND 0x40000 00104 #define SWS_BITEXACT 0x80000 00105 00106 #if FF_API_SWS_CPU_CAPS 00107 00111 #define SWS_CPU_CAPS_MMX 0x80000000 00112 #define SWS_CPU_CAPS_MMX2 0x20000000 00113 #define SWS_CPU_CAPS_3DNOW 0x40000000 00114 #define SWS_CPU_CAPS_ALTIVEC 0x10000000 00115 #define SWS_CPU_CAPS_BFIN 0x01000000 00116 #define SWS_CPU_CAPS_SSE2 0x02000000 00117 #endif 00118 00119 #define SWS_MAX_REDUCE_CUTOFF 0.002 00120 00121 #define SWS_CS_ITU709 1 00122 #define SWS_CS_FCC 4 00123 #define SWS_CS_ITU601 5 00124 #define SWS_CS_ITU624 5 00125 #define SWS_CS_SMPTE170M 5 00126 #define SWS_CS_SMPTE240M 7 00127 #define SWS_CS_DEFAULT 5 00128 00136 const int *sws_getCoefficients(int colorspace); 00137 00138 00139 // when used for filters they must have an odd number of elements 00140 // coeffs cannot be shared between vectors 00141 typedef struct { 00142 double *coeff; 00143 int length; 00144 } SwsVector; 00145 00146 // vectors can be shared 00147 typedef struct { 00148 SwsVector *lumH; 00149 SwsVector *lumV; 00150 SwsVector *chrH; 00151 SwsVector *chrV; 00152 } SwsFilter; 00153 00154 struct SwsContext; 00155 00160 int sws_isSupportedInput(enum PixelFormat pix_fmt); 00161 00166 int sws_isSupportedOutput(enum PixelFormat pix_fmt); 00167 00173 struct SwsContext *sws_alloc_context(void); 00174 00181 int sws_init_context(struct SwsContext *sws_context, SwsFilter *srcFilter, SwsFilter *dstFilter); 00182 00187 void sws_freeContext(struct SwsContext *swsContext); 00188 00189 #if FF_API_SWS_GETCONTEXT 00190 00206 struct SwsContext *sws_getContext(int srcW, int srcH, enum PixelFormat srcFormat, 00207 int dstW, int dstH, enum PixelFormat dstFormat, 00208 int flags, SwsFilter *srcFilter, 00209 SwsFilter *dstFilter, const double *param); 00210 #endif 00211 00238 int sws_scale(struct SwsContext *c, const uint8_t* const srcSlice[], 00239 const int srcStride[], int srcSliceY, int srcSliceH, 00240 uint8_t* const dst[], const int dstStride[]); 00241 00246 int sws_setColorspaceDetails(struct SwsContext *c, const int inv_table[4], 00247 int srcRange, const int table[4], int dstRange, 00248 int brightness, int contrast, int saturation); 00249 00253 int sws_getColorspaceDetails(struct SwsContext *c, int **inv_table, 00254 int *srcRange, int **table, int *dstRange, 00255 int *brightness, int *contrast, int *saturation); 00256 00260 SwsVector *sws_allocVec(int length); 00261 00266 SwsVector *sws_getGaussianVec(double variance, double quality); 00267 00272 SwsVector *sws_getConstVec(double c, int length); 00273 00278 SwsVector *sws_getIdentityVec(void); 00279 00283 void sws_scaleVec(SwsVector *a, double scalar); 00284 00288 void sws_normalizeVec(SwsVector *a, double height); 00289 void sws_convVec(SwsVector *a, SwsVector *b); 00290 void sws_addVec(SwsVector *a, SwsVector *b); 00291 void sws_subVec(SwsVector *a, SwsVector *b); 00292 void sws_shiftVec(SwsVector *a, int shift); 00293 00298 SwsVector *sws_cloneVec(SwsVector *a); 00299 00304 void sws_printVec2(SwsVector *a, AVClass *log_ctx, int log_level); 00305 00306 void sws_freeVec(SwsVector *a); 00307 00308 SwsFilter *sws_getDefaultFilter(float lumaGBlur, float chromaGBlur, 00309 float lumaSharpen, float chromaSharpen, 00310 float chromaHShift, float chromaVShift, 00311 int verbose); 00312 void sws_freeFilter(SwsFilter *filter); 00313 00327 struct SwsContext *sws_getCachedContext(struct SwsContext *context, 00328 int srcW, int srcH, enum PixelFormat srcFormat, 00329 int dstW, int dstH, enum PixelFormat dstFormat, 00330 int flags, SwsFilter *srcFilter, 00331 SwsFilter *dstFilter, const double *param); 00332 00343 void sws_convertPalette8ToPacked32(const uint8_t *src, uint8_t *dst, int num_pixels, const uint8_t *palette); 00344 00355 void sws_convertPalette8ToPacked24(const uint8_t *src, uint8_t *dst, int num_pixels, const uint8_t *palette); 00356 00363 const AVClass *sws_get_class(void); 00364 00365 #endif /* SWSCALE_SWSCALE_H */