FFmpeg
Data Structures | Macros | Functions
swscale.h File Reference

external API header More...

#include <stdint.h>
#include "libavutil/avutil.h"
#include "libavutil/log.h"
#include "libavutil/pixfmt.h"
#include "version.h"

Go to the source code of this file.

Data Structures

struct  SwsVector
 
struct  SwsFilter
 

Macros

#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
 
#define SWS_FULL_CHR_H_INT   0x2000
 
#define SWS_FULL_CHR_H_INP   0x4000
 
#define SWS_DIRECT_BGR   0x8000
 
#define SWS_ACCURATE_RND   0x40000
 
#define SWS_BITEXACT   0x80000
 
#define SWS_ERROR_DIFFUSION   0x800000
 
#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
 
#define SWS_CS_BT2020   9
 

Functions

unsigned swscale_version (void)
 
const char * swscale_configuration (void)
 Return the libswscale build-time configuration. More...
 
const char * swscale_license (void)
 Return the libswscale license. More...
 
const intsws_getCoefficients (int colorspace)
 Return a pointer to yuv<->rgb coefficients for the given colorspace suitable for sws_setColorspaceDetails(). More...
 
int sws_isSupportedInput (enum AVPixelFormat pix_fmt)
 Return a positive value if pix_fmt is a supported input format, 0 otherwise. More...
 
int sws_isSupportedOutput (enum AVPixelFormat pix_fmt)
 Return a positive value if pix_fmt is a supported output format, 0 otherwise. More...
 
int sws_isSupportedEndiannessConversion (enum AVPixelFormat pix_fmt)
 
struct SwsContextsws_alloc_context (void)
 Allocate an empty SwsContext. More...
 
av_warn_unused_result int sws_init_context (struct SwsContext *sws_context, SwsFilter *srcFilter, SwsFilter *dstFilter)
 Initialize the swscaler context sws_context. More...
 
void sws_freeContext (struct SwsContext *swsContext)
 Free the swscaler context swsContext. More...
 
struct SwsContextsws_getContext (int srcW, int srcH, enum AVPixelFormat srcFormat, int dstW, int dstH, enum AVPixelFormat dstFormat, int flags, SwsFilter *srcFilter, SwsFilter *dstFilter, const double *param)
 Allocate and return an SwsContext. More...
 
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[])
 Scale the image slice in srcSlice and put the resulting scaled slice in the image in dst. More...
 
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)
 
SwsVectorsws_allocVec (int length)
 Allocate and return an uninitialized vector with length coefficients. More...
 
SwsVectorsws_getGaussianVec (double variance, double quality)
 Return a normalized Gaussian curve used to filter stuff quality = 3 is high quality, lower is lower quality. More...
 
void sws_scaleVec (SwsVector *a, double scalar)
 Scale all the coefficients of a by the scalar value. More...
 
void sws_normalizeVec (SwsVector *a, double height)
 Scale all the coefficients of a so that their sum equals height. More...
 
attribute_deprecated SwsVectorsws_getConstVec (double c, int length)
 Allocate and return a vector with length coefficients, all with the same value c. More...
 
attribute_deprecated SwsVectorsws_getIdentityVec (void)
 Allocate and return a vector with just one coefficient, with value 1.0. More...
 
attribute_deprecated void sws_convVec (SwsVector *a, SwsVector *b)
 
attribute_deprecated void sws_addVec (SwsVector *a, SwsVector *b)
 
attribute_deprecated void sws_subVec (SwsVector *a, SwsVector *b)
 
attribute_deprecated void sws_shiftVec (SwsVector *a, int shift)
 
attribute_deprecated SwsVectorsws_cloneVec (SwsVector *a)
 
attribute_deprecated void sws_printVec2 (SwsVector *a, AVClass *log_ctx, int log_level)
 Print with av_log() a textual representation of the vector a if log_level <= av_log_level. More...
 
void sws_freeVec (SwsVector *a)
 
SwsFiltersws_getDefaultFilter (float lumaGBlur, float chromaGBlur, float lumaSharpen, float chromaSharpen, float chromaHShift, float chromaVShift, int verbose)
 
void sws_freeFilter (SwsFilter *filter)
 
struct SwsContextsws_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)
 Check if context can be reused, otherwise reallocate a new one. More...
 
void sws_convertPalette8ToPacked32 (const uint8_t *src, uint8_t *dst, int num_pixels, const uint8_t *palette)
 Convert an 8-bit paletted frame into a frame with a color depth of 32 bits. More...
 
void sws_convertPalette8ToPacked24 (const uint8_t *src, uint8_t *dst, int num_pixels, const uint8_t *palette)
 Convert an 8-bit paletted frame into a frame with a color depth of 24 bits. More...
 
const AVClasssws_get_class (void)
 Get the AVClass for swsContext. More...
 

Detailed Description

external API header

Definition in file swscale.h.