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 #ifndef FFMPEG_SWSCALE_H 22 #define FFMPEG_SWSCALE_H 23 24 /** 25 * @file swscale.h 26 * @brief 27 * external api for the swscale stuff 28 */ 29 30 #include "libavutil/avutil.h" 31 32 #define LIBSWSCALE_VERSION_MAJOR 0 33 #define LIBSWSCALE_VERSION_MINOR 5 34 #define LIBSWSCALE_VERSION_MICRO 1 35 36 #define LIBSWSCALE_VERSION_INT AV_VERSION_INT(LIBSWSCALE_VERSION_MAJOR, \ 37 LIBSWSCALE_VERSION_MINOR, \ 38 LIBSWSCALE_VERSION_MICRO) 39 #define LIBSWSCALE_VERSION AV_VERSION(LIBSWSCALE_VERSION_MAJOR, \ 40 LIBSWSCALE_VERSION_MINOR, \ 41 LIBSWSCALE_VERSION_MICRO) 42 #define LIBSWSCALE_BUILD LIBSWSCALE_VERSION_INT 43 44 #define LIBSWSCALE_IDENT "SwS" AV_STRINGIFY(LIBSWSCALE_VERSION) 45 46 /* values for the flags, the stuff on the command line is different */ 47 #define SWS_FAST_BILINEAR 1 48 #define SWS_BILINEAR 2 49 #define SWS_BICUBIC 4 50 #define SWS_X 8 51 #define SWS_POINT 0x10 52 #define SWS_AREA 0x20 53 #define SWS_BICUBLIN 0x40 54 #define SWS_GAUSS 0x80 55 #define SWS_SINC 0x100 56 #define SWS_LANCZOS 0x200 57 #define SWS_SPLINE 0x400 58 59 #define SWS_SRC_V_CHR_DROP_MASK 0x30000 60 #define SWS_SRC_V_CHR_DROP_SHIFT 16 61 62 #define SWS_PARAM_DEFAULT 123456 63 64 #define SWS_PRINT_INFO 0x1000 65 66 //the following 3 flags are not completely implemented 67 //internal chrominace subsampling info 68 #define SWS_FULL_CHR_H_INT 0x2000 69 //input subsampling info 70 #define SWS_FULL_CHR_H_INP 0x4000 71 #define SWS_DIRECT_BGR 0x8000 72 #define SWS_ACCURATE_RND 0x40000 73 74 #define SWS_CPU_CAPS_MMX 0x80000000 75 #define SWS_CPU_CAPS_MMX2 0x20000000 76 #define SWS_CPU_CAPS_3DNOW 0x40000000 77 #define SWS_CPU_CAPS_ALTIVEC 0x10000000 78 #define SWS_CPU_CAPS_BFIN 0x01000000 79 80 #define SWS_MAX_REDUCE_CUTOFF 0.002 81 82 #define SWS_CS_ITU709 1 83 #define SWS_CS_FCC 4 84 #define SWS_CS_ITU601 5 85 #define SWS_CS_ITU624 5 86 #define SWS_CS_SMPTE170M 5 87 #define SWS_CS_SMPTE240M 7 88 #define SWS_CS_DEFAULT 5 89 90 91 92 // when used for filters they must have an odd number of elements 93 // coeffs cannot be shared between vectors 94 typedef struct { 95 double *coeff; 96 int length; 97 } SwsVector; 98 99 // vectors can be shared 100 typedef struct { 101 SwsVector *lumH; 102 SwsVector *lumV; 103 SwsVector *chrH; 104 SwsVector *chrV; 105 } SwsFilter; 106 107 struct SwsContext; 108 109 void sws_freeContext(struct SwsContext *swsContext); 110 111 struct SwsContext *sws_getContext(int srcW, int srcH, int srcFormat, int dstW, int dstH, int dstFormat, int flags, 112 SwsFilter *srcFilter, SwsFilter *dstFilter, double *param); 113 int sws_scale(struct SwsContext *context, uint8_t* src[], int srcStride[], int srcSliceY, 114 int srcSliceH, uint8_t* dst[], int dstStride[]); 115 int sws_scale_ordered(struct SwsContext *context, uint8_t* src[], int srcStride[], int srcSliceY, 116 int srcSliceH, uint8_t* dst[], int dstStride[]) attribute_deprecated; 117 118 119 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); 120 int sws_getColorspaceDetails(struct SwsContext *c, int **inv_table, int *srcRange, int **table, int *dstRange, int *brightness, int *contrast, int *saturation); 121 SwsVector *sws_getGaussianVec(double variance, double quality); 122 SwsVector *sws_getConstVec(double c, int length); 123 SwsVector *sws_getIdentityVec(void); 124 void sws_scaleVec(SwsVector *a, double scalar); 125 void sws_normalizeVec(SwsVector *a, double height); 126 void sws_convVec(SwsVector *a, SwsVector *b); 127 void sws_addVec(SwsVector *a, SwsVector *b); 128 void sws_subVec(SwsVector *a, SwsVector *b); 129 void sws_shiftVec(SwsVector *a, int shift); 130 SwsVector *sws_cloneVec(SwsVector *a); 131 132 void sws_printVec(SwsVector *a); 133 void sws_freeVec(SwsVector *a); 134 135 SwsFilter *sws_getDefaultFilter(float lumaGBlur, float chromaGBlur, 136 float lumaSarpen, float chromaSharpen, 137 float chromaHShift, float chromaVShift, 138 int verbose); 139 void sws_freeFilter(SwsFilter *filter); 140 141 struct SwsContext *sws_getCachedContext(struct SwsContext *context, 142 int srcW, int srcH, int srcFormat, 143 int dstW, int dstH, int dstFormat, int flags, 144 SwsFilter *srcFilter, SwsFilter *dstFilter, double *param); 145 146 #endif /* FFMPEG_SWSCALE_H */ 147