jdcolor.c File Reference

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

Go to the source code of this file.

Macros
#define	JPEG_INTERNALS
#define	SCALEBITS   16 /* speediest right-shift on some machines */
#define	ONE_HALF   ((INT32) 1 << (SCALEBITS-1))
#define	FIX(x)   ((INT32) ((x) * (1L<<SCALEBITS) + 0.5))

Typedefs
typedef my_color_deconverter *	my_cconvert_ptr

Functions
	build_ycc_rgb_table (j_decompress_ptr cinfo)
	ycc_rgb_convert (j_decompress_ptr cinfo, JSAMPIMAGE input_buf, JDIMENSION input_row, JSAMPARRAY output_buf, int num_rows)
	null_convert (j_decompress_ptr cinfo, JSAMPIMAGE input_buf, JDIMENSION input_row, JSAMPARRAY output_buf, int num_rows)
	grayscale_convert (j_decompress_ptr cinfo, JSAMPIMAGE input_buf, JDIMENSION input_row, JSAMPARRAY output_buf, int num_rows)
	gray_rgb_convert (j_decompress_ptr cinfo, JSAMPIMAGE input_buf, JDIMENSION input_row, JSAMPARRAY output_buf, int num_rows)
	ycck_cmyk_convert (j_decompress_ptr cinfo, JSAMPIMAGE input_buf, JDIMENSION input_row, JSAMPARRAY output_buf, int num_rows)
	start_pass_dcolor (j_decompress_ptr cinfo)
	jinit_color_deconverter (j_decompress_ptr cinfo)

Macro Definition Documentation

FIX

#define FIX

(

x

)

((INT32) ((x) * (1L<<SCALEBITS) + 0.5))

Definition at line 62 of file jdcolor.c.

Referenced by build_ycc_rgb_table().

JPEG_INTERNALS

#define JPEG_INTERNALS

Definition at line 11 of file jdcolor.c.

ONE_HALF

#define ONE_HALF   ((INT32) 1 << (SCALEBITS-1))

Definition at line 61 of file jdcolor.c.

Referenced by build_ycc_rgb_table().

SCALEBITS

#define SCALEBITS   16 /* speediest right-shift on some machines */

Definition at line 60 of file jdcolor.c.

Referenced by build_ycc_rgb_table(), ycc_rgb_convert(), and ycck_cmyk_convert().

Typedef Documentation

my_cconvert_ptr

typedef my_color_deconverter* my_cconvert_ptr

Definition at line 28 of file jdcolor.c.

Function Documentation

build_ycc_rgb_table()

build_ycc_rgb_table

(

j_decompress_ptr

cinfo

)

Definition at line 70 of file jdcolor.c.

References CENTERJSAMPLE, FIX, i, int, JPOOL_IMAGE, MAXJSAMPLE, METHODDEF, ONE_HALF, RIGHT_SHIFT, SCALEBITS, SHIFT_TEMPS, and SIZEOF.

Referenced by jinit_color_deconverter().

gray_rgb_convert()

gray_rgb_convert	(	j_decompress_ptr	cinfo,
		JSAMPIMAGE	input_buf,
		JDIMENSION	input_row,
		JSAMPARRAY	output_buf,
		int	num_rows
	)

Definition at line 217 of file jdcolor.c.

References METHODDEF, num_cols, num_rows, and output_buf.

Referenced by jinit_color_deconverter().

grayscale_convert()

grayscale_convert	(	j_decompress_ptr	cinfo,
		JSAMPIMAGE	input_buf,
		JDIMENSION	input_row,
		JSAMPARRAY	output_buf,
		int	num_rows
	)

Definition at line 201 of file jdcolor.c.

References jcopy_sample_rows(), METHODDEF, num_rows, and output_buf.

Referenced by jinit_color_deconverter().

jinit_color_deconverter()

jinit_color_deconverter

(

j_decompress_ptr

cinfo

)

Definition at line 304 of file jdcolor.c.

References build_ycc_rgb_table(), ERREXIT, FALSE, gray_rgb_convert(), grayscale_convert(), JCS_CMYK, JCS_GRAYSCALE, JCS_RGB, JCS_YCbCr, JCS_YCCK, JPOOL_IMAGE, null_convert(), SIZEOF, start_pass_dcolor(), ycc_rgb_convert(), and ycck_cmyk_convert().

Referenced by master_selection().

null_convert()

null_convert	(	j_decompress_ptr	cinfo,
		JSAMPIMAGE	input_buf,
		JDIMENSION	input_row,
		JSAMPARRAY	output_buf,
		int	num_rows
	)

Definition at line 169 of file jdcolor.c.

References METHODDEF, num_cols, num_rows, and output_buf.

Referenced by jinit_color_deconverter().

start_pass_dcolor()

start_pass_dcolor

(

j_decompress_ptr

cinfo

)

Definition at line 293 of file jdcolor.c.

References GLOBAL.

Referenced by jinit_color_deconverter().

ycc_rgb_convert()

ycc_rgb_convert	(	j_decompress_ptr	cinfo,
		JSAMPIMAGE	input_buf,
		JDIMENSION	input_row,
		JSAMPARRAY	output_buf,
		int	num_rows
	)

Definition at line 120 of file jdcolor.c.

References GETJSAMPLE, int, METHODDEF, num_cols, num_rows, output_buf, RIGHT_SHIFT, SCALEBITS, and SHIFT_TEMPS.

Referenced by jinit_color_deconverter().

ycck_cmyk_convert()

ycck_cmyk_convert	(	j_decompress_ptr	cinfo,
		JSAMPIMAGE	input_buf,
		JDIMENSION	input_row,
		JSAMPARRAY	output_buf,
		int	num_rows
	)

Definition at line 245 of file jdcolor.c.

References GETJSAMPLE, int, MAXJSAMPLE, METHODDEF, num_cols, num_rows, output_buf, RIGHT_SHIFT, SCALEBITS, and SHIFT_TEMPS.

Referenced by jinit_color_deconverter().