simple_idct.c File Reference

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Detailed Description

simpleidct in C.

Definition in file simple_idct.c.

#include "avcodec.h"
#include "dsputil.h"
#include "simple_idct.h"

Go to the source code of this file.

Defines
#define	BF(k)
#define	C1   C_FIX(0.6532814824)
#define	C1   C_FIX(0.6532814824)
#define	C2   C_FIX(0.2705980501)
#define	C2   C_FIX(0.2705980501)
#define	C3   C_FIX(0.5)
#define	C_FIX(x)   ((int)((x) * 1.414213562 * (1 << CN_SHIFT) + 0.5))
#define	C_FIX(x)   ((int)((x) * (1 << CN_SHIFT) + 0.5))
#define	C_SHIFT   (4+1+12)
#define	C_SHIFT   (4+1+12)
#define	CN_SHIFT   12
#define	CN_SHIFT   12
#define	COL_SHIFT   20
#define	MAC16(rt, ra, rb)   rt += (ra) * (rb)
#define	MUL16(rt, ra, rb)   rt = (ra) * (rb)
#define	R1   R_FIX(0.6532814824)
#define	R2   R_FIX(0.2705980501)
#define	R3   R_FIX(0.5)
#define	R_FIX(x)   ((int)((x) * 1.414213562 * (1 << RN_SHIFT) + 0.5))
#define	R_SHIFT   11
#define	RN_SHIFT   15
#define	ROW_SHIFT   11
#define	W1   22725
#define	W2   21407
#define	W3   19266
#define	W4   16383
#define	W5   12873
#define	W6   8867
#define	W7   4520
Functions
static void	idct4col (uint8_t *dest, int line_size, const DCTELEM *col)
static void	idct4col_add (uint8_t *dest, int line_size, const DCTELEM *col)
static void	idct4row (DCTELEM *row)
static void	idctRowCondDC (DCTELEM *row)
static void	idctSparseCol (DCTELEM *col)
static void	idctSparseColAdd (uint8_t *dest, int line_size, DCTELEM *col)
static void	idctSparseColPut (uint8_t *dest, int line_size, DCTELEM *col)
void	simple_idct (DCTELEM *block)
void	simple_idct248_put (uint8_t *dest, int line_size, DCTELEM *block)
void	simple_idct48_add (uint8_t *dest, int line_size, DCTELEM *block)
void	simple_idct84_add (uint8_t *dest, int line_size, DCTELEM *block)
void	simple_idct_add (uint8_t *dest, int line_size, DCTELEM *block)
void	simple_idct_put (uint8_t *dest, int line_size, DCTELEM *block)