jcdctmgr.c File Reference

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

Data Structures
struct	my_fdct_controller

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

Typedefs
typedef my_fdct_controller *	my_fdct_ptr

Functions
	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)
	jinit_forward_dct (j_compress_ptr cinfo)
	start_pass_fdctmgr (j_compress_ptr cinfo)

#define CONST_BITS   14

Referenced by start_pass_fdctmgr().

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

Referenced by forward_DCT().

#define JPEG_INTERNALS

typedef my_fdct_controller* my_fdct_ptr

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
	)

References CENTERJSAMPLE, DCTSIZE, DCTSIZE2, DIVIDE_BY, my_fdct_controller::divisors, my_fdct_controller::do_dct, for(), GETJSAMPLE, i, num_blocks, and temp.

Referenced by jinit_forward_dct().

jinit_forward_dct

(

j_compress_ptr

cinfo

)

References my_fdct_controller::divisors, my_fdct_controller::do_dct, ERREXIT, forward_DCT(), i, JDCT_FLOAT, JDCT_IFAST, JDCT_ISLOW, jpeg_fdct_ifast(), jpeg_fdct_islow(), JPOOL_IMAGE, NULL, NUM_QUANT_TBLS, my_fdct_controller::pub, SIZEOF, and start_pass_fdctmgr().

Referenced by jinit_compress_master().

start_pass_fdctmgr

(

j_compress_ptr

cinfo

)

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

Referenced by jinit_forward_dct().