jcdctmgr.c File Reference

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

Go to the source code of this file.

Macros
#define	JPEG_INTERNALS
#define	CONST_BITS   14
#define	DIVIDE_BY(a, b)   if (a >= b) a /= b; else a = 0

Typedefs
typedef my_fdct_controller *	my_fdct_ptr

Functions
	start_pass_fdctmgr (j_compress_ptr cinfo)
	forward_DCT (j_compress_ptr cinfo, jpeg_component_info *compptr, JSAMPARRAY sample_data, JBLOCKROW coef_blocks, JDIMENSION start_row, JDIMENSION start_col, JDIMENSION num_blocks)
	forward_DCT_float (j_compress_ptr cinfo, jpeg_component_info *compptr, JSAMPARRAY sample_data, JBLOCKROW coef_blocks, JDIMENSION start_row, JDIMENSION start_col, JDIMENSION num_blocks)
	jinit_forward_dct (j_compress_ptr cinfo)

Macro Definition Documentation

CONST_BITS

#define CONST_BITS   14

Referenced by start_pass_fdctmgr().

DIVIDE_BY

#define DIVIDE_BY	(		a,
			b
	)		if (a >= b) a /= b; else a = 0

Referenced by forward_DCT().

JPEG_INTERNALS

#define JPEG_INTERNALS

Definition at line 14 of file jcdctmgr.c.

Typedef Documentation

my_fdct_ptr

typedef my_fdct_controller* my_fdct_ptr

Definition at line 41 of file jcdctmgr.c.

Function Documentation

forward_DCT()

forward_DCT	(	j_compress_ptr	cinfo,
		jpeg_component_info *	compptr,
		JSAMPARRAY	sample_data,
		JBLOCKROW	coef_blocks,
		JDIMENSION	start_row,
		JDIMENSION	start_col,
		JDIMENSION	num_blocks
	)

Definition at line 180 of file jcdctmgr.c.

References CENTERJSAMPLE, compptr, DCTSIZE, DCTSIZE2, DIVIDE_BY, for(), GETJSAMPLE, i, METHODDEF, num_blocks, and jpeg_component_info::quant_tbl_no.

Referenced by jinit_forward_dct().

forward_DCT_float()

forward_DCT_float	(	j_compress_ptr	cinfo,
		jpeg_component_info *	compptr,
		JSAMPARRAY	sample_data,
		JBLOCKROW	coef_blocks,
		JDIMENSION	start_row,
		JDIMENSION	start_col,
		JDIMENSION	num_blocks
	)

Definition at line 270 of file jcdctmgr.c.

References CENTERJSAMPLE, compptr, DCTSIZE, DCTSIZE2, for(), GETJSAMPLE, GLOBAL, i, num_blocks, and jpeg_component_info::quant_tbl_no.

Referenced by jinit_forward_dct().

jinit_forward_dct()

jinit_forward_dct

(

j_compress_ptr

cinfo

)

Definition at line 345 of file jcdctmgr.c.

References ERREXIT, forward_DCT(), forward_DCT_float(), i, JDCT_FLOAT, JDCT_IFAST, JDCT_ISLOW, jpeg_fdct_float(), jpeg_fdct_ifast(), jpeg_fdct_islow(), JPOOL_IMAGE, NULL, NUM_QUANT_TBLS, SIZEOF, and start_pass_fdctmgr().

Referenced by jinit_compress_master().

start_pass_fdctmgr()

start_pass_fdctmgr

(

j_compress_ptr

cinfo

)

Definition at line 54 of file jcdctmgr.c.

References compptr, CONST_BITS, DCTSIZE, DCTSIZE2, DESCALE, ERREXIT, ERREXIT1, for(), i, JDCT_FLOAT, JDCT_IFAST, JDCT_ISLOW, JPOOL_IMAGE, METHODDEF, MULTIPLY16V16, NULL, NUM_QUANT_TBLS, jpeg_component_info::quant_tbl_no, SHIFT_TEMPS, and SIZEOF.

Referenced by jinit_forward_dct().