jcdctmgr.cpp File Reference

#include "jinclude.h"
#include "mrpt_jpeglib.h"
#include "jdct.h"

Go to the source code of this file.

Classes
struct	my_fdct_controller

Macros
#define	JPEG_INTERNALS
#define	CONST_BITS   14
#define	DIVIDE_BY(a, b)

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

DIVIDE_BY

#define DIVIDE_BY	(		a,
			b
	)

Value:

        if (a >= b)         \
                a /= b;         \
        else                \
        a = 0

JPEG_INTERNALS

#define JPEG_INTERNALS

Definition at line 10 of file jcdctmgr.cpp.

Typedef Documentation

my_fdct_ptr

typedef my_fdct_controller* my_fdct_ptr

Definition at line 37 of file jcdctmgr.cpp.

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 189 of file jcdctmgr.cpp.

References CENTERJSAMPLE, compptr, DCTSIZE, DCTSIZE2, DIVIDE_BY, my_fdct_controller::divisors, my_fdct_controller::do_dct, for(), GETJSAMPLE, jpeg_component_info::quant_tbl_no, and workspace.

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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 293 of file jcdctmgr.cpp.

References CENTERJSAMPLE, compptr, DCTSIZE, DCTSIZE2, my_fdct_controller::do_float_dct, my_fdct_controller::float_divisors, for(), GETJSAMPLE, jpeg_component_info::quant_tbl_no, and workspace.

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jinit_forward_dct()

jinit_forward_dct

(

j_compress_ptr

cinfo

)

Definition at line 386 of file jcdctmgr.cpp.

Referenced by jinit_compress_master().

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start_pass_fdctmgr()

start_pass_fdctmgr

(

j_compress_ptr

cinfo

)

Definition at line 49 of file jcdctmgr.cpp.

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

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