/* * Copyright (C) 2001-2003 Michael Niedermayer <michaelni@gmx.at> * * This file is part of FFmpeg. * * FFmpeg is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * FFmpeg is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #ifndef SWSCALE_H #define SWSCALE_H /** * @file swscale.h * @brief * external api for the swscale stuff */ #include "avutil.h" #define AV_STRINGIFY(s) AV_TOSTRING(s) #define AV_TOSTRING(s) #s #define LIBSWSCALE_VERSION_INT ((0<<16)+(5<<8)+0) #define LIBSWSCALE_VERSION 0.5.0 #define LIBSWSCALE_BUILD LIBSWSCALE_VERSION_INT #define LIBSWSCALE_IDENT "SwS" AV_STRINGIFY(LIBSWSCALE_VERSION) /* values for the flags, the stuff on the command line is different */ #define SWS_FAST_BILINEAR 1 #define SWS_BILINEAR 2 #define SWS_BICUBIC 4 #define SWS_X 8 #define SWS_POINT 0x10 #define SWS_AREA 0x20 #define SWS_BICUBLIN 0x40 #define SWS_GAUSS 0x80 #define SWS_SINC 0x100 #define SWS_LANCZOS 0x200 #define SWS_SPLINE 0x400 #define SWS_SRC_V_CHR_DROP_MASK 0x30000 #define SWS_SRC_V_CHR_DROP_SHIFT 16 #define SWS_PARAM_DEFAULT 123456 #define SWS_PRINT_INFO 0x1000 //the following 3 flags are not completely implemented //internal chrominace subsampling info #define SWS_FULL_CHR_H_INT 0x2000 //input subsampling info #define SWS_FULL_CHR_H_INP 0x4000 #define SWS_DIRECT_BGR 0x8000 #define SWS_ACCURATE_RND 0x40000 #define SWS_CPU_CAPS_MMX 0x80000000 #define SWS_CPU_CAPS_MMX2 0x20000000 #define SWS_CPU_CAPS_3DNOW 0x40000000 #define SWS_CPU_CAPS_ALTIVEC 0x10000000 #define SWS_CPU_CAPS_BFIN 0x01000000 #define SWS_MAX_REDUCE_CUTOFF 0.002 #define SWS_CS_ITU709 1 #define SWS_CS_FCC 4 #define SWS_CS_ITU601 5 #define SWS_CS_ITU624 5 #define SWS_CS_SMPTE170M 5 #define SWS_CS_SMPTE240M 7 #define SWS_CS_DEFAULT 5 // when used for filters they must have an odd number of elements // coeffs cannot be shared between vectors typedef struct { double *coeff; int length; } SwsVector; // vectors can be shared typedef struct { SwsVector *lumH; SwsVector *lumV; SwsVector *chrH; SwsVector *chrV; } SwsFilter; struct SwsContext; void sws_freeContext(struct SwsContext *swsContext); struct SwsContext *sws_getContext(int srcW, int srcH, int srcFormat, int dstW, int dstH, int dstFormat, int flags, SwsFilter *srcFilter, SwsFilter *dstFilter, double *param); int sws_scale(struct SwsContext *context, uint8_t* src[], int srcStride[], int srcSliceY, int srcSliceH, uint8_t* dst[], int dstStride[]); int sws_scale_ordered(struct SwsContext *context, uint8_t* src[], int srcStride[], int srcSliceY, int srcSliceH, uint8_t* dst[], int dstStride[]) attribute_deprecated; int sws_setColorspaceDetails(struct SwsContext *c, const int inv_table[4], int srcRange, const int table[4], int dstRange, int brightness, int contrast, int saturation); int sws_getColorspaceDetails(struct SwsContext *c, int **inv_table, int *srcRange, int **table, int *dstRange, int *brightness, int *contrast, int *saturation); SwsVector *sws_getGaussianVec(double variance, double quality); SwsVector *sws_getConstVec(double c, int length); SwsVector *sws_getIdentityVec(void); void sws_scaleVec(SwsVector *a, double scalar); void sws_normalizeVec(SwsVector *a, double height); void sws_convVec(SwsVector *a, SwsVector *b); void sws_addVec(SwsVector *a, SwsVector *b); void sws_subVec(SwsVector *a, SwsVector *b); void sws_shiftVec(SwsVector *a, int shift); SwsVector *sws_cloneVec(SwsVector *a); void sws_printVec(SwsVector *a); void sws_freeVec(SwsVector *a); SwsFilter *sws_getDefaultFilter(float lumaGBlur, float chromaGBlur, float lumaSarpen, float chromaSharpen, float chromaHShift, float chromaVShift, int verbose); void sws_freeFilter(SwsFilter *filter); struct SwsContext *sws_getCachedContext(struct SwsContext *context, int srcW, int srcH, int srcFormat, int dstW, int dstH, int dstFormat, int flags, SwsFilter *srcFilter, SwsFilter *dstFilter, double *param); #endif