#include "config.h"
#include <inttypes.h>
#include <math.h>
#include <stdio.h>
#include <string.h>
#include "libavutil/attributes.h"
#include "libavutil/avassert.h"
#include "libavutil/avutil.h"
#include "libavutil/bswap.h"
#include "libavutil/cpu.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/mathematics.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "libavutil/x86/asm.h"
#include "libavutil/x86/cpu.h"
#include "rgb2rgb.h"
#include "swscale.h"
#include "swscale_internal.h"

Data Structures
struct	FormatEntry

Macros
#define	_SVID_SOURCE

#define	_DARWIN_C_SOURCE

#define	LICENSE_PREFIX "libswscale license: "

#define	RET 0xC3

#define	USE_MMAP (HAVE_MMAP && HAVE_MPROTECT && defined MAP_ANONYMOUS)

Functions
unsigned	swscale_version (void)
	Return the LIBSWSCALE_VERSION_INT constant.

const char *	swscale_configuration (void)
	Return the libswscale build-time configuration.

const char *	swscale_license (void)
	Return the libswscale license.

int	sws_isSupportedInput (enum AVPixelFormat pix_fmt)
	Return a positive value if pix_fmt is a supported input format, 0 otherwise.

int	sws_isSupportedOutput (enum AVPixelFormat pix_fmt)
	Return a positive value if pix_fmt is a supported output format, 0 otherwise.

const char *	sws_format_name (enum AVPixelFormat format)

static double	getSplineCoeff (double a, double b, double c, double d, double dist)

static int	initFilter (int16_t outFilter, int32_t filterPos, int outFilterSize, int xInc, int srcW, int dstW, int filterAlign, int one, int flags, int cpu_flags, SwsVector srcFilter, SwsVector *dstFilter, double param[2])

static void	getSubSampleFactors (int h, int v, enum AVPixelFormat format)

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)

static int	handle_jpeg (enum AVPixelFormat *format)

static int	handle_0alpha (enum AVPixelFormat *format)

SwsContext *	sws_alloc_context (void)
	Allocate an empty SwsContext.

av_cold int	sws_init_context (SwsContext c, SwsFilter srcFilter, SwsFilter *dstFilter)
	Initialize the swscaler context sws_context.

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)
	Allocate and return an SwsContext.

SwsFilter *	sws_getDefaultFilter (float lumaGBlur, float chromaGBlur, float lumaSharpen, float chromaSharpen, float chromaHShift, float chromaVShift, int verbose)

SwsVector *	sws_allocVec (int length)
	Allocate and return an uninitialized vector with length coefficients.

SwsVector *	sws_getGaussianVec (double variance, double quality)
	Return a normalized Gaussian curve used to filter stuff quality = 3 is high quality, lower is lower quality.

SwsVector *	sws_getConstVec (double c, int length)
	Allocate and return a vector with length coefficients, all with the same value c.

SwsVector *	sws_getIdentityVec (void)
	Allocate and return a vector with just one coefficient, with value 1.0.

static double	sws_dcVec (SwsVector *a)

void	sws_scaleVec (SwsVector *a, double scalar)
	Scale all the coefficients of a by the scalar value.

void	sws_normalizeVec (SwsVector *a, double height)
	Scale all the coefficients of a so that their sum equals height.

static SwsVector *	sws_getConvVec (SwsVector a, SwsVector b)

static SwsVector *	sws_sumVec (SwsVector a, SwsVector b)

static SwsVector *	sws_diffVec (SwsVector a, SwsVector b)

static SwsVector *	sws_getShiftedVec (SwsVector *a, int shift)

void	sws_shiftVec (SwsVector *a, int shift)

void	sws_addVec (SwsVector a, SwsVector b)

void	sws_subVec (SwsVector a, SwsVector b)

void	sws_convVec (SwsVector a, SwsVector b)

SwsVector *	sws_cloneVec (SwsVector *a)
	Allocate and return a clone of the vector a, that is a vector with the same coefficients as a.

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.

void	sws_freeVec (SwsVector *a)

void	sws_freeFilter (SwsFilter *filter)

void	sws_freeContext (SwsContext *c)
	Free the swscaler context swsContext.

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)
	Check if context can be reused, otherwise reallocate a new one.

Variables
static const FormatEntry	format_entries [AV_PIX_FMT_NB]

const int32_t	ff_yuv2rgb_coeffs [8][4]

Macro Definition Documentation

#define _SVID_SOURCE

Definition at line 23 of file utils.c.

#define _DARWIN_C_SOURCE

Definition at line 24 of file utils.c.

#define LICENSE_PREFIX "libswscale license: "

#define RET 0xC3

Definition at line 72 of file utils.c.

#define USE_MMAP (HAVE_MMAP && HAVE_MPROTECT && defined MAP_ANONYMOUS)

Function Documentation

const char* sws_format_name ( enum AVPixelFormat format )

Definition at line 216 of file utils.c.

static double getSplineCoeff	(	double	a,
		double	b,
		double	c,
		double	d,
		double	dist
	)

static

Definition at line 226 of file utils.c.

Referenced by initFilter().

static int initFilter	(	int16_t **	outFilter,
		int32_t **	filterPos,
		int *	outFilterSize,
		int	xInc,
		int	srcW,
		int	dstW,
		int	filterAlign,
		int	one,
		int	flags,
		int	cpu_flags,
		SwsVector *	srcFilter,
		SwsVector *	dstFilter,
		double	param[2]
	)