jdct.h File Reference


Detailed Description

Definition in file jdct.h.

Go to the source code of this file.

Defines

#define IFAST_SCALE_BITS   13
#define IDCT_range_limit(cinfo)   ((cinfo)->sample_range_limit + CENTERJSAMPLE)
#define RANGE_MASK   (MAXJSAMPLE * 4 + 3)
#define ONE   ((INT32) 1)
#define CONST_SCALE   (ONE << CONST_BITS)
#define FIX(x)   ((INT32) ((x) * CONST_SCALE + 0.5))
#define DESCALE(x, n)   RIGHT_SHIFT((x) + (ONE << ((n)-1)), n)
#define MULTIPLY16C16(var, const)   ((var) * (const))
#define MULTIPLY16V16(var1, var2)   ((var1) * (var2))

Typedefs

typedef INT32 DCTELEM
typedef MULTIPLIER ISLOW_MULT_TYPE
typedef INT32 IFAST_MULT_TYPE
typedef FAST_FLOAT FLOAT_MULT_TYPE

Variables

jpeg_component_infocompptr
jpeg_component_info JCOEFPTR coef_block
jpeg_component_info JCOEFPTR
JSAMPARRAY 
output_buf
jpeg_component_info JCOEFPTR
JSAMPARRAY JDIMENSION 
output_col


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