jutils.c File Reference

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

Go to the source code of this file.

Macros
#define	JPEG_INTERNALS
#define	FMEMCOPY(dest, src, size)   MEMCOPY(dest,src,size)
#define	FMEMZERO(target, size)   MEMZERO(target,size)

Functions
GLOBAL long	jdiv_round_up (long a, long b)
GLOBAL long	jround_up (long a, long b)
GLOBAL void	jcopy_sample_rows (JSAMPARRAY input_array, int source_row, JSAMPARRAY output_array, int dest_row, int num_rows, JDIMENSION num_cols)
GLOBAL void	jcopy_block_row (JBLOCKROW input_row, JBLOCKROW output_row, JDIMENSION num_blocks)
GLOBAL void	jzero_far (void FAR *target, size_t bytestozero)

Variables
const int	jpeg_zigzag_order [DCTSIZE2]
const int	jpeg_natural_order [DCTSIZE2+16]

Macro Definition Documentation

#define FMEMCOPY	(		dest,
			src,
			size
	)		MEMCOPY(dest,src,size)

Definition at line 96 of file jutils.c.

#define FMEMZERO	(		target,
			size
	)		MEMZERO(target,size)

Definition at line 97 of file jutils.c.

#define JPEG_INTERNALS

Definition at line 14 of file jutils.c.

Function Documentation

GLOBAL void jcopy_block_row	(	JBLOCKROW	input_row,
		JBLOCKROW	output_row,
		JDIMENSION	num_blocks
	)

Definition at line 141 of file jutils.c.

GLOBAL void jcopy_sample_rows	(	JSAMPARRAY	input_array,
		int	source_row,
		JSAMPARRAY	output_array,
		int	dest_row,
		int	num_rows,
		JDIMENSION	num_cols
	)

Definition at line 107 of file jutils.c.

GLOBAL long jdiv_round_up	(	long	a,
		long	b
	)

Definition at line 68 of file jutils.c.

GLOBAL long jround_up	(	long	a,
		long	b
	)

Definition at line 77 of file jutils.c.

GLOBAL void jzero_far	(	void FAR *	target,
		size_t	bytestozero
	)

Definition at line 161 of file jutils.c.

Variable Documentation

const int jpeg_natural_order[DCTSIZE2+16]

Initial value:

= {
  0,  1,  8, 16,  9,  2,  3, 10,
 17, 24, 32, 25, 18, 11,  4,  5,
 12, 19, 26, 33, 40, 48, 41, 34,
 27, 20, 13,  6,  7, 14, 21, 28,
 35, 42, 49, 56, 57, 50, 43, 36,
 29, 22, 15, 23, 30, 37, 44, 51,
 58, 59, 52, 45, 38, 31, 39, 46,
 53, 60, 61, 54, 47, 55, 62, 63,
 63, 63, 63, 63, 63, 63, 63, 63, 
 63, 63, 63, 63, 63, 63, 63, 63
}

Definition at line 49 of file jutils.c.

const int jpeg_zigzag_order[DCTSIZE2]

Initial value:

= {
   0,  1,  5,  6, 14, 15, 27, 28,
   2,  4,  7, 13, 16, 26, 29, 42,
   3,  8, 12, 17, 25, 30, 41, 43,
   9, 11, 18, 24, 31, 40, 44, 53,
  10, 19, 23, 32, 39, 45, 52, 54,
  20, 22, 33, 38, 46, 51, 55, 60,
  21, 34, 37, 47, 50, 56, 59, 61,
  35, 36, 48, 49, 57, 58, 62, 63
}

Definition at line 24 of file jutils.c.