#include "jinclude.h"
#include "jpeglib.h"
#include "jdct.h"

Include dependency graph for jidctfst.c:

Macros
#define	CONST_BITS 8

#define	DEQUANTIZE(coef, quantval) (((IFAST_MULT_TYPE) (coef)) * (quantval))

#define	DESCALE(x, n) RIGHT_SHIFT(x, n)

#define	FIX_1_082392200 ((INT32) 277) /* FIX(1.082392200) */

#define	FIX_1_414213562 ((INT32) 362) /* FIX(1.414213562) */

#define	FIX_1_847759065 ((INT32) 473) /* FIX(1.847759065) */

#define	FIX_2_613125930 ((INT32) 669) /* FIX(2.613125930) */

#define	IDESCALE(x, n) ((int) IRIGHT_SHIFT(x, n))

#define	IRIGHT_SHIFT(x, shft) ((x) >> (shft))

#define	ISHIFT_TEMPS

#define	JPEG_INTERNALS

#define	MULTIPLY(var, const) ((DCTELEM) DESCALE((var) * (const), CONST_BITS))

#define	PASS1_BITS 2

Functions
	jpeg_idct_ifast (j_decompress_ptr cinfo, jpeg_component_info *compptr, JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col)

Macro Definition Documentation

◆ CONST_BITS

#define CONST_BITS 8

Definition at line 77 of file jidctfst.c.

◆ DEQUANTIZE

#define DEQUANTIZE	(	coef,
		quantval
	)	(((IFAST_MULT_TYPE) (coef)) * (quantval))

Definition at line 129 of file jidctfst.c.

◆ DESCALE

#define DESCALE	(	x,
		n
	)	RIGHT_SHIFT(x, n)

Definition at line 111 of file jidctfst.c.

◆ FIX_1_082392200

#define FIX_1_082392200 ((INT32) 277) /* FIX(1.082392200) */

Definition at line 92 of file jidctfst.c.

◆ FIX_1_414213562

#define FIX_1_414213562 ((INT32) 362) /* FIX(1.414213562) */

Definition at line 93 of file jidctfst.c.

◆ FIX_1_847759065

#define FIX_1_847759065 ((INT32) 473) /* FIX(1.847759065) */

Definition at line 94 of file jidctfst.c.

◆ FIX_2_613125930

#define FIX_2_613125930 ((INT32) 669) /* FIX(2.613125930) */

Definition at line 95 of file jidctfst.c.

◆ IDESCALE

#define IDESCALE	(	x,
		n
	)	((int) IRIGHT_SHIFT(x, n))

Definition at line 159 of file jidctfst.c.

◆ IRIGHT_SHIFT

#define IRIGHT_SHIFT	(	x,
		shft
	)	((x) >> (shft))

Definition at line 153 of file jidctfst.c.

◆ ISHIFT_TEMPS

#define ISHIFT_TEMPS

Definition at line 152 of file jidctfst.c.

◆ JPEG_INTERNALS

#define JPEG_INTERNALS

Definition at line 35 of file jidctfst.c.

◆ MULTIPLY

#define MULTIPLY	(	var,
		const
	)	((DCTELEM) DESCALE((var) * (const), CONST_BITS))

Definition at line 119 of file jidctfst.c.

◆ PASS1_BITS

#define PASS1_BITS 2

Definition at line 78 of file jidctfst.c.

Function Documentation

◆ jpeg_idct_ifast()

jpeg_idct_ifast	(	j_decompress_ptr	cinfo,
		jpeg_component_info *	compptr,
		JCOEFPTR	coef_block,
		JSAMPARRAY	output_buf,
		JDIMENSION	output_col
	)

Definition at line 168 of file jidctfst.c.

Macros

Functions