jfdctfst.cpp File Reference

#include "jinclude.h"
#include "mrpt_jpeglib.h"
#include "jdct.h"

Go to the source code of this file.

Macros
#define	JPEG_INTERNALS
#define	CONST_BITS   8
#define	FIX_0_382683433   ((INT32)98) /* FIX(0.382683433) */
#define	FIX_0_541196100   ((INT32)139) /* FIX(0.541196100) */
#define	FIX_0_707106781   ((INT32)181) /* FIX(0.707106781) */
#define	FIX_1_306562965   ((INT32)334) /* FIX(1.306562965) */
#define	DESCALE(x, n)   RIGHT_SHIFT(x, n)
#define	MULTIPLY(var, const)   ((DCTELEM)DESCALE((var) * (const), CONST_BITS))

Functions
	GLOBAL (void) jpeg_fdct_ifast(DCTELEM *data)

Macro Definition Documentation

CONST_BITS

#define CONST_BITS   8

Definition at line 43 of file jfdctfst.cpp.

DESCALE

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

Definition at line 71 of file jfdctfst.cpp.

FIX_0_382683433

#define FIX_0_382683433   ((INT32)98) /* FIX(0.382683433) */

Definition at line 53 of file jfdctfst.cpp.

FIX_0_541196100

#define FIX_0_541196100   ((INT32)139) /* FIX(0.541196100) */

Definition at line 54 of file jfdctfst.cpp.

FIX_0_707106781

#define FIX_0_707106781   ((INT32)181) /* FIX(0.707106781) */

Definition at line 55 of file jfdctfst.cpp.

FIX_1_306562965

#define FIX_1_306562965   ((INT32)334) /* FIX(1.306562965) */

Definition at line 56 of file jfdctfst.cpp.

JPEG_INTERNALS

#define JPEG_INTERNALS

Definition at line 10 of file jfdctfst.cpp.

MULTIPLY

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

Definition at line 78 of file jfdctfst.cpp.

Function Documentation

GLOBAL()

GLOBAL

(

void

)

Definition at line 84 of file jfdctfst.cpp.

References ctr, DCTSIZE, FIX_0_382683433, FIX_0_541196100, FIX_0_707106781, FIX_1_306562965, MULTIPLY, SHIFT_TEMPS, tmp10, tmp11, tmp12, tmp13, z1, z11, z13, z2, z3, z4, and z5.