tiny_ssim.c File Reference

#include <inttypes.h>
#include <limits.h>
#include <math.h>
#include <stdio.h>
#include <stdlib.h>

Go to the source code of this file.

Macros
#define	FFSWAP(type, a, b)   do{type SWAP_tmp= b; b= a; a= SWAP_tmp;}while(0)
#define	FFMIN(a, b)   ((a) > (b) ? (b) : (a))
#define	BIT_DEPTH   8
#define	PIXEL_MAX   ((1 << BIT_DEPTH)-1)

Typedefs
typedef uint8_t	pixel

Functions
static void	ssim_4x4x2_core (const pixel *pix1, intptr_t stride1, const pixel *pix2, intptr_t stride2, int sums[2][4])
static float	ssim_end1 (int s1, int s2, int ss, int s12)
static float	ssim_end4 (int sum0[5][4], int sum1[5][4], int width)
float	ssim_plane (pixel *pix1, intptr_t stride1, pixel *pix2, intptr_t stride2, int width, int height, void *buf, int *cnt)
uint64_t	ssd_plane (const uint8_t *pix1, const uint8_t *pix2, int size)
static double	ssd_to_psnr (uint64_t ssd, uint64_t denom)
static double	ssim_db (double ssim, double weight)
static void	print_results (uint64_t ssd[3], double ssim[3], int frames, int w, int h)
int	main (int argc, char *argv[])

Macro Definition Documentation

FFSWAP

#define FFSWAP	(		type,
			a,
			b
	)		do{type SWAP_tmp= b; b= a; a= SWAP_tmp;}while(0)

Definition at line 36 of file tiny_ssim.c.

FFMIN

#define FFMIN	(		a,
			b
	)		((a) > (b) ? (b) : (a))

Definition at line 37 of file tiny_ssim.c.

BIT_DEPTH

#define BIT_DEPTH   8

Definition at line 39 of file tiny_ssim.c.

PIXEL_MAX

#define PIXEL_MAX   ((1 << BIT_DEPTH)-1)

Definition at line 40 of file tiny_ssim.c.

Typedef Documentation

pixel

typedef uint8_t pixel

Definition at line 41 of file tiny_ssim.c.

Function Documentation

ssim_4x4x2_core()

static void ssim_4x4x2_core ( const pixel *  pix1, intptr_t  stride1, const pixel *  pix2, intptr_t  stride2, int  sums[2][4]  )

static

Definition at line 46 of file tiny_ssim.c.

Referenced by ssim_plane().

ssim_end1()

static float ssim_end1 ( int  s1, int  s2, int  ss, int  s12  )

static

Definition at line 75 of file tiny_ssim.c.

Referenced by ssim_end4().

ssim_end4()

static float ssim_end4 ( int  sum0[5][4], int  sum1[5][4], int  width  )

static

Definition at line 99 of file tiny_ssim.c.

Referenced by ssim_plane().

ssim_plane()

float ssim_plane	(	pixel *	pix1,
		intptr_t	stride1,
		pixel *	pix2,
		intptr_t	stride2,
		int	width,
		int	height,
		void *	buf,
		int *	cnt
	)

Definition at line 112 of file tiny_ssim.c.

Referenced by main().

ssd_plane()

uint64_t ssd_plane	(	const uint8_t *	pix1,
		const uint8_t *	pix2,
		int	size
	)

Definition at line 140 of file tiny_ssim.c.

Referenced by main().

ssd_to_psnr()

static double ssd_to_psnr ( uint64_t  ssd, uint64_t  denom  )

static

Definition at line 152 of file tiny_ssim.c.

Referenced by print_results().

ssim_db()

static double ssim_db ( double  ssim, double  weight  )

static

Definition at line 157 of file tiny_ssim.c.

Referenced by print_results().

print_results()

static void print_results ( uint64_t  ssd[3], double  ssim[3], int  frames, int  w, int  h  )

static

Definition at line 162 of file tiny_ssim.c.

Referenced by main().

main()

int main	(	int	argc,
		char *	argv[]
	)

Definition at line 177 of file tiny_ssim.c.