Miam-Player  0.8.0
A nice music player
swscale.h
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1 /*
2  * Copyright (C) 2001-2011 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 SWSCALE_SWSCALE_H
22 #define SWSCALE_SWSCALE_H
23 
30 #include <stdint.h>
31 
32 #include "libavutil/avutil.h"
33 #include "libavutil/log.h"
34 #include "libavutil/pixfmt.h"
35 #include "version.h"
36 
45 unsigned swscale_version(void);
46 
50 const char *swscale_configuration(void);
51 
55 const char *swscale_license(void);
56 
57 /* values for the flags, the stuff on the command line is different */
58 #define SWS_FAST_BILINEAR 1
59 #define SWS_BILINEAR 2
60 #define SWS_BICUBIC 4
61 #define SWS_X 8
62 #define SWS_POINT 0x10
63 #define SWS_AREA 0x20
64 #define SWS_BICUBLIN 0x40
65 #define SWS_GAUSS 0x80
66 #define SWS_SINC 0x100
67 #define SWS_LANCZOS 0x200
68 #define SWS_SPLINE 0x400
69 
70 #define SWS_SRC_V_CHR_DROP_MASK 0x30000
71 #define SWS_SRC_V_CHR_DROP_SHIFT 16
72 
73 #define SWS_PARAM_DEFAULT 123456
74 
75 #define SWS_PRINT_INFO 0x1000
76 
77 //the following 3 flags are not completely implemented
78 //internal chrominance subsampling info
79 #define SWS_FULL_CHR_H_INT 0x2000
80 //input subsampling info
81 #define SWS_FULL_CHR_H_INP 0x4000
82 #define SWS_DIRECT_BGR 0x8000
83 #define SWS_ACCURATE_RND 0x40000
84 #define SWS_BITEXACT 0x80000
85 #define SWS_ERROR_DIFFUSION 0x800000
86 
87 #define SWS_MAX_REDUCE_CUTOFF 0.002
88 
89 #define SWS_CS_ITU709 1
90 #define SWS_CS_FCC 4
91 #define SWS_CS_ITU601 5
92 #define SWS_CS_ITU624 5
93 #define SWS_CS_SMPTE170M 5
94 #define SWS_CS_SMPTE240M 7
95 #define SWS_CS_DEFAULT 5
96 #define SWS_CS_BT2020 9
97 
105 const int *sws_getCoefficients(int colorspace);
106 
107 // when used for filters they must have an odd number of elements
108 // coeffs cannot be shared between vectors
109 typedef struct SwsVector {
110  double *coeff;
111  int length;
112 } SwsVector;
113 
114 // vectors can be shared
115 typedef struct SwsFilter {
120 } SwsFilter;
121 
122 struct SwsContext;
123 
128 int sws_isSupportedInput(enum AVPixelFormat pix_fmt);
129 
134 int sws_isSupportedOutput(enum AVPixelFormat pix_fmt);
135 
142 
148 struct SwsContext *sws_alloc_context(void);
149 
157 int sws_init_context(struct SwsContext *sws_context, SwsFilter *srcFilter, SwsFilter *dstFilter);
158 
163 void sws_freeContext(struct SwsContext *swsContext);
164 
186 struct SwsContext *sws_getContext(int srcW, int srcH, enum AVPixelFormat srcFormat,
187  int dstW, int dstH, enum AVPixelFormat dstFormat,
188  int flags, SwsFilter *srcFilter,
189  SwsFilter *dstFilter, const double *param);
190 
217 int sws_scale(struct SwsContext *c, const uint8_t *const srcSlice[],
218  const int srcStride[], int srcSliceY, int srcSliceH,
219  uint8_t *const dst[], const int dstStride[]);
220 
231 int sws_setColorspaceDetails(struct SwsContext *c, const int inv_table[4],
232  int srcRange, const int table[4], int dstRange,
233  int brightness, int contrast, int saturation);
234 
238 int sws_getColorspaceDetails(struct SwsContext *c, int **inv_table,
239  int *srcRange, int **table, int *dstRange,
240  int *brightness, int *contrast, int *saturation);
241 
246 
251 SwsVector *sws_getGaussianVec(double variance, double quality);
252 
256 void sws_scaleVec(SwsVector *a, double scalar);
257 
261 void sws_normalizeVec(SwsVector *a, double height);
262 
263 #if FF_API_SWS_VECTOR
269 attribute_deprecated void sws_shiftVec(SwsVector *a, int shift);
271 attribute_deprecated void sws_printVec2(SwsVector *a, AVClass *log_ctx, int log_level);
272 #endif
273 
274 void sws_freeVec(SwsVector *a);
275 
276 SwsFilter *sws_getDefaultFilter(float lumaGBlur, float chromaGBlur,
277  float lumaSharpen, float chromaSharpen,
278  float chromaHShift, float chromaVShift,
279  int verbose);
280 void sws_freeFilter(SwsFilter *filter);
281 
294 struct SwsContext *sws_getCachedContext(struct SwsContext *context,
295  int srcW, int srcH, enum AVPixelFormat srcFormat,
296  int dstW, int dstH, enum AVPixelFormat dstFormat,
297  int flags, SwsFilter *srcFilter,
298  SwsFilter *dstFilter, const double *param);
299 
310 void sws_convertPalette8ToPacked32(const uint8_t *src, uint8_t *dst, int num_pixels, const uint8_t *palette);
311 
322 void sws_convertPalette8ToPacked24(const uint8_t *src, uint8_t *dst, int num_pixels, const uint8_t *palette);
323 
330 const AVClass *sws_get_class(void);
331 
336 #endif /* SWSCALE_SWSCALE_H */
int sws_isSupportedOutput(enum AVPixelFormat pix_fmt)
void sws_convertPalette8ToPacked32(const uint8_t *src, uint8_t *dst, int num_pixels, const uint8_t *palette)
void sws_convertPalette8ToPacked24(const uint8_t *src, uint8_t *dst, int num_pixels, const uint8_t *palette)
struct SwsFilter SwsFilter
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)
int sws_isSupportedEndiannessConversion(enum AVPixelFormat pix_fmt)
const char * swscale_configuration(void)
Definition: swscale.h:109
const AVClass * sws_get_class(void)
SwsVector * chrH
Definition: swscale.h:118
attribute_deprecated void sws_convVec(SwsVector *a, SwsVector *b)
av_warn_unused_result int sws_init_context(struct SwsContext *sws_context, SwsFilter *srcFilter, SwsFilter *dstFilter)
attribute_deprecated SwsVector * sws_cloneVec(SwsVector *a)
attribute_deprecated SwsVector * sws_getConstVec(double c, int length)
struct SwsContext * sws_getContext(int srcW, int srcH, enum AVPixelFormat srcFormat, int dstW, int dstH, enum AVPixelFormat dstFormat, int flags, SwsFilter *srcFilter, SwsFilter *dstFilter, const double *param)
SwsFilter * sws_getDefaultFilter(float lumaGBlur, float chromaGBlur, float lumaSharpen, float chromaSharpen, float chromaHShift, float chromaVShift, int verbose)
attribute_deprecated void sws_subVec(SwsVector *a, SwsVector *b)
attribute_deprecated void sws_printVec2(SwsVector *a, AVClass *log_ctx, int log_level)
void sws_scaleVec(SwsVector *a, double scalar)
int length
number of coefficients in the vector
Definition: swscale.h:111
void sws_normalizeVec(SwsVector *a, double height)
struct SwsContext * sws_getCachedContext(struct SwsContext *context, int srcW, int srcH, enum AVPixelFormat srcFormat, int dstW, int dstH, enum AVPixelFormat dstFormat, int flags, SwsFilter *srcFilter, SwsFilter *dstFilter, const double *param)
double * coeff
pointer to the list of coefficients
Definition: swscale.h:110
void sws_freeFilter(SwsFilter *filter)
SwsVector * sws_allocVec(int length)
Definition: swscale.h:115
attribute_deprecated void sws_shiftVec(SwsVector *a, int shift)
void sws_freeContext(struct SwsContext *swsContext)
Definition: log.h:67
const int * sws_getCoefficients(int colorspace)
unsigned swscale_version(void)
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)
void sws_freeVec(SwsVector *a)
int sws_scale(struct SwsContext *c, const uint8_t *const srcSlice[], const int srcStride[], int srcSliceY, int srcSliceH, uint8_t *const dst[], const int dstStride[])
struct SwsContext * sws_alloc_context(void)
#define attribute_deprecated
Definition: attributes.h:98
#define av_warn_unused_result
Definition: attributes.h:58
SwsVector * chrV
Definition: swscale.h:119
attribute_deprecated void sws_addVec(SwsVector *a, SwsVector *b)
struct SwsVector SwsVector
SwsVector * lumH
Definition: swscale.h:116
int sws_isSupportedInput(enum AVPixelFormat pix_fmt)
attribute_deprecated SwsVector * sws_getIdentityVec(void)
SwsVector * lumV
Definition: swscale.h:117
AVPixelFormat
Definition: pixfmt.h:60
const char * swscale_license(void)