display.c File Reference

#include <stdint.h>
#include <string.h>
#include <math.h>
#include "display.h"
#include "libm.h"
#include "mathematics.h"

Go to the source code of this file.

Macros
#define	CONV_FP(x)
#define	CONV_DB(x)

Functions
double	av_display_rotation_get (const int32_t matrix[9])
	Extract the rotation component of the transformation matrix.
void	av_display_rotation_set (int32_t matrix[9], double angle)
	Initialize a transformation matrix describing a pure clockwise rotation by the specified angle (in degrees).
void	av_display_matrix_flip (int32_t matrix[9], int hflip, int vflip)
	Flip the input matrix horizontally and/or vertically.

Macro Definition Documentation

CONV_FP

#define CONV_FP

(

x

)

Value:

((double) (x)) / (1 << 16)

Definition at line 30 of file display.c.

Referenced by av_display_rotation_get().

CONV_DB

#define CONV_DB

(

x

)

Value:

(int32_t) ((x) * (1 << 16))

Definition at line 33 of file display.c.

Referenced by av_display_rotation_set().