Atmel Software Framework

jfdctfst.c File Reference
#include "jinclude.h"
#include "jpeglib.h"
#include "jdct.h"

Macros

#define CONST_BITS   8
 
#define DESCALE(x, n)   RIGHT_SHIFT(x, n)
 
#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 JPEG_INTERNALS
 
#define MULTIPLY(var, const)   ((DCTELEM) DESCALE((var) * (const), CONST_BITS))
 

Functions

 jpeg_fdct_ifast (DCTELEM *data)
 

#define CONST_BITS   8
#define DESCALE (   x,
  n 
)    RIGHT_SHIFT(x, n)
#define FIX_0_382683433   ((INT32) 98) /* FIX(0.382683433) */

Referenced by jpeg_fdct_ifast().

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

Referenced by jpeg_fdct_ifast().

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

Referenced by jpeg_fdct_ifast().

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

Referenced by jpeg_fdct_ifast().

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

Referenced by jpeg_fdct_ifast().