scale.cc File Reference

#include "libyuv/scale.h"
#include <assert.h>
#include <string.h>
#include "libyuv/cpu_id.h"
#include "libyuv/planar_functions.h"
#include "libyuv/row.h"
#include "libyuv/scale_row.h"

Macros
#define	SUBSAMPLE(v, a, s)   (v < 0) ? (-((-v + a) >> s)) : ((v + a) >> s)
#define	MIN1(x)   ((x) < 1 ? 1 : (x))

Functions
void	ScalePlaneBilinearDown (int src_width, int src_height, int dst_width, int dst_height, int src_stride, int dst_stride, const uint8 *src_ptr, uint8 *dst_ptr, enum FilterMode filtering)
void	ScalePlaneBilinearDown_16 (int src_width, int src_height, int dst_width, int dst_height, int src_stride, int dst_stride, const uint16 *src_ptr, uint16 *dst_ptr, enum FilterMode filtering)
void	ScalePlaneBilinearUp (int src_width, int src_height, int dst_width, int dst_height, int src_stride, int dst_stride, const uint8 *src_ptr, uint8 *dst_ptr, enum FilterMode filtering)
void	ScalePlaneBilinearUp_16 (int src_width, int src_height, int dst_width, int dst_height, int src_stride, int dst_stride, const uint16 *src_ptr, uint16 *dst_ptr, enum FilterMode filtering)
LIBYUV_API void	ScalePlane (const uint8 *src, int src_stride, int src_width, int src_height, uint8 *dst, int dst_stride, int dst_width, int dst_height, enum FilterMode filtering)
LIBYUV_API void	ScalePlane_16 (const uint16 *src, int src_stride, int src_width, int src_height, uint16 *dst, int dst_stride, int dst_width, int dst_height, enum FilterMode filtering)
LIBYUV_API int	I420Scale (const uint8 *src_y, int src_stride_y, const uint8 *src_u, int src_stride_u, const uint8 *src_v, int src_stride_v, int src_width, int src_height, uint8 *dst_y, int dst_stride_y, uint8 *dst_u, int dst_stride_u, uint8 *dst_v, int dst_stride_v, int dst_width, int dst_height, enum FilterMode filtering)
LIBYUV_API int	I420Scale_16 (const uint16 *src_y, int src_stride_y, const uint16 *src_u, int src_stride_u, const uint16 *src_v, int src_stride_v, int src_width, int src_height, uint16 *dst_y, int dst_stride_y, uint16 *dst_u, int dst_stride_u, uint16 *dst_v, int dst_stride_v, int dst_width, int dst_height, enum FilterMode filtering)
LIBYUV_API int	Scale (const uint8 *src_y, const uint8 *src_u, const uint8 *src_v, int src_stride_y, int src_stride_u, int src_stride_v, int src_width, int src_height, uint8 *dst_y, uint8 *dst_u, uint8 *dst_v, int dst_stride_y, int dst_stride_u, int dst_stride_v, int dst_width, int dst_height, LIBYUV_BOOL interpolate)
LIBYUV_API int	ScaleOffset (const uint8 *src, int src_width, int src_height, uint8 *dst, int dst_width, int dst_height, int dst_yoffset, LIBYUV_BOOL interpolate)

Macro Definition Documentation

MIN1

#define MIN1

(

x

)

((x) < 1 ? 1 : (x))

SUBSAMPLE

#define SUBSAMPLE	(		v,
			a,
			s
	)		(v < 0) ? (-((-v + a) >> s)) : ((v + a) >> s)

Function Documentation

I420Scale()

LIBYUV_API int I420Scale	(	const uint8 *	src_y,
		int	src_stride_y,
		const uint8 *	src_u,
		int	src_stride_u,
		const uint8 *	src_v,
		int	src_stride_v,
		int	src_width,
		int	src_height,
		uint8 *	dst_y,
		int	dst_stride_y,
		uint8 *	dst_u,
		int	dst_stride_u,
		uint8 *	dst_v,
		int	dst_stride_v,
		int	dst_width,
		int	dst_height,
		enum FilterMode	filtering
	)

I420Scale_16()

LIBYUV_API int I420Scale_16	(	const uint16 *	src_y,
		int	src_stride_y,
		const uint16 *	src_u,
		int	src_stride_u,
		const uint16 *	src_v,
		int	src_stride_v,
		int	src_width,
		int	src_height,
		uint16 *	dst_y,
		int	dst_stride_y,
		uint16 *	dst_u,
		int	dst_stride_u,
		uint16 *	dst_v,
		int	dst_stride_v,
		int	dst_width,
		int	dst_height,
		enum FilterMode	filtering
	)

Scale()

LIBYUV_API int Scale	(	const uint8 *	src_y,
		const uint8 *	src_u,
		const uint8 *	src_v,
		int	src_stride_y,
		int	src_stride_u,
		int	src_stride_v,
		int	src_width,
		int	src_height,
		uint8 *	dst_y,
		uint8 *	dst_u,
		uint8 *	dst_v,
		int	dst_stride_y,
		int	dst_stride_u,
		int	dst_stride_v,
		int	dst_width,
		int	dst_height,
		LIBYUV_BOOL	interpolate
	)

ScaleOffset()

LIBYUV_API int ScaleOffset	(	const uint8 *	src,
		int	src_width,
		int	src_height,
		uint8 *	dst,
		int	dst_width,
		int	dst_height,
		int	dst_yoffset,
		LIBYUV_BOOL	interpolate
	)

ScalePlane()

LIBYUV_API void ScalePlane	(	const uint8 *	src,
		int	src_stride,
		int	src_width,
		int	src_height,
		uint8 *	dst,
		int	dst_stride,
		int	dst_width,
		int	dst_height,
		enum FilterMode	filtering
	)

ScalePlane_16()

LIBYUV_API void ScalePlane_16	(	const uint16 *	src,
		int	src_stride,
		int	src_width,
		int	src_height,
		uint16 *	dst,
		int	dst_stride,
		int	dst_width,
		int	dst_height,
		enum FilterMode	filtering
	)

ScalePlaneBilinearDown()

void ScalePlaneBilinearDown	(	int	src_width,
		int	src_height,
		int	dst_width,
		int	dst_height,
		int	src_stride,
		int	dst_stride,
		const uint8 *	src_ptr,
		uint8 *	dst_ptr,
		enum FilterMode	filtering
	)

ScalePlaneBilinearDown_16()

void ScalePlaneBilinearDown_16	(	int	src_width,
		int	src_height,
		int	dst_width,
		int	dst_height,
		int	src_stride,
		int	dst_stride,
		const uint16 *	src_ptr,
		uint16 *	dst_ptr,
		enum FilterMode	filtering
	)

ScalePlaneBilinearUp()

void ScalePlaneBilinearUp	(	int	src_width,
		int	src_height,
		int	dst_width,
		int	dst_height,
		int	src_stride,
		int	dst_stride,
		const uint8 *	src_ptr,
		uint8 *	dst_ptr,
		enum FilterMode	filtering
	)

ScalePlaneBilinearUp_16()

void ScalePlaneBilinearUp_16	(	int	src_width,
		int	src_height,
		int	dst_width,
		int	dst_height,
		int	src_stride,
		int	dst_stride,
		const uint16 *	src_ptr,
		uint16 *	dst_ptr,
		enum FilterMode	filtering
	)