1 | /*
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2 | * Copyright (C) 2001-2003 Michael Niedermayer <[email protected]>
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3 | *
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4 | * This file is part of FFmpeg.
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5 | *
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6 | * FFmpeg is free software; you can redistribute it and/or
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7 | * modify it under the terms of the GNU Lesser General Public
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8 | * License as published by the Free Software Foundation; either
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9 | * version 2.1 of the License, or (at your option) any later version.
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10 | *
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11 | * FFmpeg is distributed in the hope that it will be useful,
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12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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14 | * Lesser General Public License for more details.
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15 | *
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16 | * You should have received a copy of the GNU Lesser General Public
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17 | * License along with FFmpeg; if not, write to the Free Software
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18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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19 | */
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20 |
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21 | #ifndef SWSCALE_H
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22 | #define SWSCALE_H
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23 |
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24 | /**
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25 | * @file swscale.h
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26 | * @brief
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27 | * external api for the swscale stuff
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28 | */
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29 |
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30 | #include "avutil.h"
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31 |
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32 | #define AV_STRINGIFY(s) AV_TOSTRING(s)
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33 | #define AV_TOSTRING(s) #s
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34 |
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35 | #define LIBSWSCALE_VERSION_INT ((0<<16)+(5<<8)+0)
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36 | #define LIBSWSCALE_VERSION 0.5.0
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37 | #define LIBSWSCALE_BUILD LIBSWSCALE_VERSION_INT
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38 |
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39 | #define LIBSWSCALE_IDENT "SwS" AV_STRINGIFY(LIBSWSCALE_VERSION)
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40 |
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41 | /* values for the flags, the stuff on the command line is different */
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42 | #define SWS_FAST_BILINEAR 1
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43 | #define SWS_BILINEAR 2
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44 | #define SWS_BICUBIC 4
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45 | #define SWS_X 8
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46 | #define SWS_POINT 0x10
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47 | #define SWS_AREA 0x20
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48 | #define SWS_BICUBLIN 0x40
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49 | #define SWS_GAUSS 0x80
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50 | #define SWS_SINC 0x100
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51 | #define SWS_LANCZOS 0x200
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52 | #define SWS_SPLINE 0x400
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53 |
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54 | #define SWS_SRC_V_CHR_DROP_MASK 0x30000
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55 | #define SWS_SRC_V_CHR_DROP_SHIFT 16
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56 |
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57 | #define SWS_PARAM_DEFAULT 123456
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58 |
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59 | #define SWS_PRINT_INFO 0x1000
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60 |
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61 | //the following 3 flags are not completely implemented
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62 | //internal chrominace subsampling info
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63 | #define SWS_FULL_CHR_H_INT 0x2000
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64 | //input subsampling info
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65 | #define SWS_FULL_CHR_H_INP 0x4000
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66 | #define SWS_DIRECT_BGR 0x8000
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67 | #define SWS_ACCURATE_RND 0x40000
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68 |
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69 | #define SWS_CPU_CAPS_MMX 0x80000000
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70 | #define SWS_CPU_CAPS_MMX2 0x20000000
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71 | #define SWS_CPU_CAPS_3DNOW 0x40000000
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72 | #define SWS_CPU_CAPS_ALTIVEC 0x10000000
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73 | #define SWS_CPU_CAPS_BFIN 0x01000000
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74 |
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75 | #define SWS_MAX_REDUCE_CUTOFF 0.002
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76 |
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77 | #define SWS_CS_ITU709 1
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78 | #define SWS_CS_FCC 4
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79 | #define SWS_CS_ITU601 5
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80 | #define SWS_CS_ITU624 5
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81 | #define SWS_CS_SMPTE170M 5
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82 | #define SWS_CS_SMPTE240M 7
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83 | #define SWS_CS_DEFAULT 5
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84 |
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85 |
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86 |
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87 | // when used for filters they must have an odd number of elements
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88 | // coeffs cannot be shared between vectors
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89 | typedef struct {
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90 | double *coeff;
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91 | int length;
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92 | } SwsVector;
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93 |
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94 | // vectors can be shared
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95 | typedef struct {
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96 | SwsVector *lumH;
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97 | SwsVector *lumV;
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98 | SwsVector *chrH;
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99 | SwsVector *chrV;
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100 | } SwsFilter;
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101 |
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102 | struct SwsContext;
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103 |
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104 | void sws_freeContext(struct SwsContext *swsContext);
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105 |
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106 | struct SwsContext *sws_getContext(int srcW, int srcH, int srcFormat, int dstW, int dstH, int dstFormat, int flags,
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107 | SwsFilter *srcFilter, SwsFilter *dstFilter, double *param);
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108 | int sws_scale(struct SwsContext *context, uint8_t* src[], int srcStride[], int srcSliceY,
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109 | int srcSliceH, uint8_t* dst[], int dstStride[]);
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110 | int sws_scale_ordered(struct SwsContext *context, uint8_t* src[], int srcStride[], int srcSliceY,
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111 | int srcSliceH, uint8_t* dst[], int dstStride[]) attribute_deprecated;
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112 |
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113 |
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114 | 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);
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115 | int sws_getColorspaceDetails(struct SwsContext *c, int **inv_table, int *srcRange, int **table, int *dstRange, int *brightness, int *contrast, int *saturation);
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116 | SwsVector *sws_getGaussianVec(double variance, double quality);
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117 | SwsVector *sws_getConstVec(double c, int length);
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118 | SwsVector *sws_getIdentityVec(void);
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119 | void sws_scaleVec(SwsVector *a, double scalar);
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120 | void sws_normalizeVec(SwsVector *a, double height);
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121 | void sws_convVec(SwsVector *a, SwsVector *b);
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122 | void sws_addVec(SwsVector *a, SwsVector *b);
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123 | void sws_subVec(SwsVector *a, SwsVector *b);
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124 | void sws_shiftVec(SwsVector *a, int shift);
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125 | SwsVector *sws_cloneVec(SwsVector *a);
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126 |
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127 | void sws_printVec(SwsVector *a);
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128 | void sws_freeVec(SwsVector *a);
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129 |
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130 | SwsFilter *sws_getDefaultFilter(float lumaGBlur, float chromaGBlur,
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131 | float lumaSarpen, float chromaSharpen,
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132 | float chromaHShift, float chromaVShift,
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133 | int verbose);
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134 | void sws_freeFilter(SwsFilter *filter);
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135 |
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136 | struct SwsContext *sws_getCachedContext(struct SwsContext *context,
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137 | int srcW, int srcH, int srcFormat,
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138 | int dstW, int dstH, int dstFormat, int flags,
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139 | SwsFilter *srcFilter, SwsFilter *dstFilter, double *param);
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140 |
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141 | #endif
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