Libav
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00001 /* 00002 * Copyright (C) 2001-2003 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 00032 #define LIBSWSCALE_VERSION_MAJOR 0 00033 #define LIBSWSCALE_VERSION_MINOR 11 00034 #define LIBSWSCALE_VERSION_MICRO 0 00035 00036 #define LIBSWSCALE_VERSION_INT AV_VERSION_INT(LIBSWSCALE_VERSION_MAJOR, \ 00037 LIBSWSCALE_VERSION_MINOR, \ 00038 LIBSWSCALE_VERSION_MICRO) 00039 #define LIBSWSCALE_VERSION AV_VERSION(LIBSWSCALE_VERSION_MAJOR, \ 00040 LIBSWSCALE_VERSION_MINOR, \ 00041 LIBSWSCALE_VERSION_MICRO) 00042 #define LIBSWSCALE_BUILD LIBSWSCALE_VERSION_INT 00043 00044 #define LIBSWSCALE_IDENT "SwS" AV_STRINGIFY(LIBSWSCALE_VERSION) 00045 00049 unsigned swscale_version(void); 00050 00054 const char *swscale_configuration(void); 00055 00059 const char *swscale_license(void); 00060 00061 /* values for the flags, the stuff on the command line is different */ 00062 #define SWS_FAST_BILINEAR 1 00063 #define SWS_BILINEAR 2 00064 #define SWS_BICUBIC 4 00065 #define SWS_X 8 00066 #define SWS_POINT 0x10 00067 #define SWS_AREA 0x20 00068 #define SWS_BICUBLIN 0x40 00069 #define SWS_GAUSS 0x80 00070 #define SWS_SINC 0x100 00071 #define SWS_LANCZOS 0x200 00072 #define SWS_SPLINE 0x400 00073 00074 #define SWS_SRC_V_CHR_DROP_MASK 0x30000 00075 #define SWS_SRC_V_CHR_DROP_SHIFT 16 00076 00077 #define SWS_PARAM_DEFAULT 123456 00078 00079 #define SWS_PRINT_INFO 0x1000 00080 00081 //the following 3 flags are not completely implemented 00082 //internal chrominace subsampling info 00083 #define SWS_FULL_CHR_H_INT 0x2000 00084 //input subsampling info 00085 #define SWS_FULL_CHR_H_INP 0x4000 00086 #define SWS_DIRECT_BGR 0x8000 00087 #define SWS_ACCURATE_RND 0x40000 00088 #define SWS_BITEXACT 0x80000 00089 00090 #define SWS_CPU_CAPS_MMX 0x80000000 00091 #define SWS_CPU_CAPS_MMX2 0x20000000 00092 #define SWS_CPU_CAPS_3DNOW 0x40000000 00093 #define SWS_CPU_CAPS_ALTIVEC 0x10000000 00094 #define SWS_CPU_CAPS_BFIN 0x01000000 00095 00096 #define SWS_MAX_REDUCE_CUTOFF 0.002 00097 00098 #define SWS_CS_ITU709 1 00099 #define SWS_CS_FCC 4 00100 #define SWS_CS_ITU601 5 00101 #define SWS_CS_ITU624 5 00102 #define SWS_CS_SMPTE170M 5 00103 #define SWS_CS_SMPTE240M 7 00104 #define SWS_CS_DEFAULT 5 00105 00113 const int *sws_getCoefficients(int colorspace); 00114 00115 00116 // when used for filters they must have an odd number of elements 00117 // coeffs cannot be shared between vectors 00118 typedef struct { 00119 double *coeff; 00120 int length; 00121 } SwsVector; 00122 00123 // vectors can be shared 00124 typedef struct { 00125 SwsVector *lumH; 00126 SwsVector *lumV; 00127 SwsVector *chrH; 00128 SwsVector *chrV; 00129 } SwsFilter; 00130 00131 struct SwsContext; 00132 00137 int sws_isSupportedInput(enum PixelFormat pix_fmt); 00138 00143 int sws_isSupportedOutput(enum PixelFormat pix_fmt); 00144 00149 void sws_freeContext(struct SwsContext *swsContext); 00150 00164 struct SwsContext *sws_getContext(int srcW, int srcH, enum PixelFormat srcFormat, 00165 int dstW, int dstH, enum PixelFormat dstFormat, 00166 int flags, SwsFilter *srcFilter, 00167 SwsFilter *dstFilter, const double *param); 00168 00195 int sws_scale(struct SwsContext *context, const uint8_t* const srcSlice[], const int srcStride[], 00196 int srcSliceY, int srcSliceH, uint8_t* const dst[], const int dstStride[]); 00197 #if LIBSWSCALE_VERSION_MAJOR < 1 00198 00201 int sws_scale_ordered(struct SwsContext *context, const uint8_t* const src[], 00202 int srcStride[], int srcSliceY, int srcSliceH, 00203 uint8_t* dst[], int dstStride[]) attribute_deprecated; 00204 #endif 00205 00211 int sws_setColorspaceDetails(struct SwsContext *c, const int inv_table[4], 00212 int srcRange, const int table[4], int dstRange, 00213 int brightness, int contrast, int saturation); 00214 00218 int sws_getColorspaceDetails(struct SwsContext *c, int **inv_table, 00219 int *srcRange, int **table, int *dstRange, 00220 int *brightness, int *contrast, int *saturation); 00221 00225 SwsVector *sws_allocVec(int length); 00226 00231 SwsVector *sws_getGaussianVec(double variance, double quality); 00232 00237 SwsVector *sws_getConstVec(double c, int length); 00238 00243 SwsVector *sws_getIdentityVec(void); 00244 00248 void sws_scaleVec(SwsVector *a, double scalar); 00249 00253 void sws_normalizeVec(SwsVector *a, double height); 00254 void sws_convVec(SwsVector *a, SwsVector *b); 00255 void sws_addVec(SwsVector *a, SwsVector *b); 00256 void sws_subVec(SwsVector *a, SwsVector *b); 00257 void sws_shiftVec(SwsVector *a, int shift); 00258 00263 SwsVector *sws_cloneVec(SwsVector *a); 00264 00265 #if LIBSWSCALE_VERSION_MAJOR < 1 00266 00269 attribute_deprecated void sws_printVec(SwsVector *a); 00270 #endif 00271 00276 void sws_printVec2(SwsVector *a, AVClass *log_ctx, int log_level); 00277 00278 void sws_freeVec(SwsVector *a); 00279 00280 SwsFilter *sws_getDefaultFilter(float lumaGBlur, float chromaGBlur, 00281 float lumaSharpen, float chromaSharpen, 00282 float chromaHShift, float chromaVShift, 00283 int verbose); 00284 void sws_freeFilter(SwsFilter *filter); 00285 00299 struct SwsContext *sws_getCachedContext(struct SwsContext *context, 00300 int srcW, int srcH, enum PixelFormat srcFormat, 00301 int dstW, int dstH, enum PixelFormat dstFormat, 00302 int flags, SwsFilter *srcFilter, 00303 SwsFilter *dstFilter, const double *param); 00304 00315 void sws_convertPalette8ToPacked32(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette); 00316 00327 void sws_convertPalette8ToPacked24(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette); 00328 00329 00330 #endif /* SWSCALE_SWSCALE_H */