Libav 0.7.1
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00001 /* 00002 * Copyright (C) 2001-2003 Michael Niedermayer <michaelni@gmx.at> 00003 * 00004 * This file is part of Libav. 00005 * 00006 * Libav 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 * Libav 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 Libav; 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 2 00033 #define LIBSWSCALE_VERSION_MINOR 0 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 00050 #ifndef FF_API_SWS_GETCONTEXT 00051 #define FF_API_SWS_GETCONTEXT (LIBSWSCALE_VERSION_MAJOR < 3) 00052 #endif 00053 #ifndef FF_API_SWS_CPU_CAPS 00054 #define FF_API_SWS_CPU_CAPS (LIBSWSCALE_VERSION_MAJOR < 3) 00055 #endif 00056 00060 unsigned swscale_version(void); 00061 00065 const char *swscale_configuration(void); 00066 00070 const char *swscale_license(void); 00071 00072 /* values for the flags, the stuff on the command line is different */ 00073 #define SWS_FAST_BILINEAR 1 00074 #define SWS_BILINEAR 2 00075 #define SWS_BICUBIC 4 00076 #define SWS_X 8 00077 #define SWS_POINT 0x10 00078 #define SWS_AREA 0x20 00079 #define SWS_BICUBLIN 0x40 00080 #define SWS_GAUSS 0x80 00081 #define SWS_SINC 0x100 00082 #define SWS_LANCZOS 0x200 00083 #define SWS_SPLINE 0x400 00084 00085 #define SWS_SRC_V_CHR_DROP_MASK 0x30000 00086 #define SWS_SRC_V_CHR_DROP_SHIFT 16 00087 00088 #define SWS_PARAM_DEFAULT 123456 00089 00090 #define SWS_PRINT_INFO 0x1000 00091 00092 //the following 3 flags are not completely implemented 00093 //internal chrominace subsampling info 00094 #define SWS_FULL_CHR_H_INT 0x2000 00095 //input subsampling info 00096 #define SWS_FULL_CHR_H_INP 0x4000 00097 #define SWS_DIRECT_BGR 0x8000 00098 #define SWS_ACCURATE_RND 0x40000 00099 #define SWS_BITEXACT 0x80000 00100 00101 #if FF_API_SWS_CPU_CAPS 00102 00106 #define SWS_CPU_CAPS_MMX 0x80000000 00107 #define SWS_CPU_CAPS_MMX2 0x20000000 00108 #define SWS_CPU_CAPS_3DNOW 0x40000000 00109 #define SWS_CPU_CAPS_ALTIVEC 0x10000000 00110 #define SWS_CPU_CAPS_BFIN 0x01000000 00111 #define SWS_CPU_CAPS_SSE2 0x02000000 00112 #endif 00113 00114 #define SWS_MAX_REDUCE_CUTOFF 0.002 00115 00116 #define SWS_CS_ITU709 1 00117 #define SWS_CS_FCC 4 00118 #define SWS_CS_ITU601 5 00119 #define SWS_CS_ITU624 5 00120 #define SWS_CS_SMPTE170M 5 00121 #define SWS_CS_SMPTE240M 7 00122 #define SWS_CS_DEFAULT 5 00123 00131 const int *sws_getCoefficients(int colorspace); 00132 00133 00134 // when used for filters they must have an odd number of elements 00135 // coeffs cannot be shared between vectors 00136 typedef struct { 00137 double *coeff; 00138 int length; 00139 } SwsVector; 00140 00141 // vectors can be shared 00142 typedef struct { 00143 SwsVector *lumH; 00144 SwsVector *lumV; 00145 SwsVector *chrH; 00146 SwsVector *chrV; 00147 } SwsFilter; 00148 00149 struct SwsContext; 00150 00155 int sws_isSupportedInput(enum PixelFormat pix_fmt); 00156 00161 int sws_isSupportedOutput(enum PixelFormat pix_fmt); 00162 00168 struct SwsContext *sws_alloc_context(void); 00169 00176 int sws_init_context(struct SwsContext *sws_context, SwsFilter *srcFilter, SwsFilter *dstFilter); 00177 00182 void sws_freeContext(struct SwsContext *swsContext); 00183 00184 #if FF_API_SWS_GETCONTEXT 00185 00201 struct SwsContext *sws_getContext(int srcW, int srcH, enum PixelFormat srcFormat, 00202 int dstW, int dstH, enum PixelFormat dstFormat, 00203 int flags, SwsFilter *srcFilter, 00204 SwsFilter *dstFilter, const double *param); 00205 #endif 00206 00233 int sws_scale(struct SwsContext *context, const uint8_t* const srcSlice[], const int srcStride[], 00234 int srcSliceY, int srcSliceH, uint8_t* const dst[], const int dstStride[]); 00235 00240 int sws_setColorspaceDetails(struct SwsContext *c, const int inv_table[4], 00241 int srcRange, const int table[4], int dstRange, 00242 int brightness, int contrast, int saturation); 00243 00247 int sws_getColorspaceDetails(struct SwsContext *c, int **inv_table, 00248 int *srcRange, int **table, int *dstRange, 00249 int *brightness, int *contrast, int *saturation); 00250 00254 SwsVector *sws_allocVec(int length); 00255 00260 SwsVector *sws_getGaussianVec(double variance, double quality); 00261 00266 SwsVector *sws_getConstVec(double c, int length); 00267 00272 SwsVector *sws_getIdentityVec(void); 00273 00277 void sws_scaleVec(SwsVector *a, double scalar); 00278 00282 void sws_normalizeVec(SwsVector *a, double height); 00283 void sws_convVec(SwsVector *a, SwsVector *b); 00284 void sws_addVec(SwsVector *a, SwsVector *b); 00285 void sws_subVec(SwsVector *a, SwsVector *b); 00286 void sws_shiftVec(SwsVector *a, int shift); 00287 00292 SwsVector *sws_cloneVec(SwsVector *a); 00293 00298 void sws_printVec2(SwsVector *a, AVClass *log_ctx, int log_level); 00299 00300 void sws_freeVec(SwsVector *a); 00301 00302 SwsFilter *sws_getDefaultFilter(float lumaGBlur, float chromaGBlur, 00303 float lumaSharpen, float chromaSharpen, 00304 float chromaHShift, float chromaVShift, 00305 int verbose); 00306 void sws_freeFilter(SwsFilter *filter); 00307 00321 struct SwsContext *sws_getCachedContext(struct SwsContext *context, 00322 int srcW, int srcH, enum PixelFormat srcFormat, 00323 int dstW, int dstH, enum PixelFormat dstFormat, 00324 int flags, SwsFilter *srcFilter, 00325 SwsFilter *dstFilter, const double *param); 00326 00337 void sws_convertPalette8ToPacked32(const uint8_t *src, uint8_t *dst, int num_pixels, const uint8_t *palette); 00338 00349 void sws_convertPalette8ToPacked24(const uint8_t *src, uint8_t *dst, int num_pixels, const uint8_t *palette); 00350 00351 00352 #endif /* SWSCALE_SWSCALE_H */