jccolor.c File Reference

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

Data Structures
struct	my_color_converter

Macros
#define	B_CB_OFF   (5*(MAXJSAMPLE+1))
#define	B_CR_OFF   (7*(MAXJSAMPLE+1))
#define	B_Y_OFF   (2*(MAXJSAMPLE+1)) /* etc. */
#define	CBCR_OFFSET   ((INT32) CENTERJSAMPLE << SCALEBITS)
#define	FIX(x)   ((INT32) ((x) * (1L<<SCALEBITS) + 0.5))
#define	G_CB_OFF   (4*(MAXJSAMPLE+1))
#define	G_CR_OFF   (6*(MAXJSAMPLE+1))
#define	G_Y_OFF   (1*(MAXJSAMPLE+1)) /* offset to G => Y section */
#define	JPEG_INTERNALS
#define	ONE_HALF   ((INT32) 1 << (SCALEBITS-1))
#define	R_CB_OFF   (3*(MAXJSAMPLE+1))
#define	R_CR_OFF   B_CB_OFF /* B=>Cb, R=>Cr are the same */
#define	R_Y_OFF   0 /* offset to R => Y section */
#define	SCALEBITS   16 /* speediest right-shift on some machines */
#define	TABLE_SIZE   (8*(MAXJSAMPLE+1))

Typedefs
typedef my_color_converter *	my_cconvert_ptr

Functions
	cmyk_ycck_convert (j_compress_ptr cinfo, JSAMPARRAY input_buf, JSAMPIMAGE output_buf, JDIMENSION output_row, int num_rows)
	grayscale_convert (j_compress_ptr cinfo, JSAMPARRAY input_buf, JSAMPIMAGE output_buf, JDIMENSION output_row, int num_rows)
	jinit_color_converter (j_compress_ptr cinfo)
	null_convert (j_compress_ptr cinfo, JSAMPARRAY input_buf, JSAMPIMAGE output_buf, JDIMENSION output_row, int num_rows)
	null_method (j_compress_ptr cinfo)
	rgb_gray_convert (j_compress_ptr cinfo, JSAMPARRAY input_buf, JSAMPIMAGE output_buf, JDIMENSION output_row, int num_rows)
	rgb_ycc_convert (j_compress_ptr cinfo, JSAMPARRAY input_buf, JSAMPIMAGE output_buf, JDIMENSION output_row, int num_rows)
	rgb_ycc_start (j_compress_ptr cinfo)

#define B_CB_OFF   (5*(MAXJSAMPLE+1))

Referenced by cmyk_ycck_convert(), rgb_ycc_convert(), and rgb_ycc_start().

#define B_CR_OFF   (7*(MAXJSAMPLE+1))

Referenced by cmyk_ycck_convert(), rgb_ycc_convert(), and rgb_ycc_start().

#define B_Y_OFF   (2*(MAXJSAMPLE+1)) /* etc. */

Referenced by cmyk_ycck_convert(), rgb_gray_convert(), rgb_ycc_convert(), and rgb_ycc_start().

#define CBCR_OFFSET   ((INT32) CENTERJSAMPLE << SCALEBITS)

Referenced by rgb_ycc_start().

#define FIX

(

x

)

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

Referenced by rgb_ycc_start().

#define G_CB_OFF   (4*(MAXJSAMPLE+1))

Referenced by cmyk_ycck_convert(), rgb_ycc_convert(), and rgb_ycc_start().

#define G_CR_OFF   (6*(MAXJSAMPLE+1))

Referenced by cmyk_ycck_convert(), rgb_ycc_convert(), and rgb_ycc_start().

#define G_Y_OFF   (1*(MAXJSAMPLE+1)) /* offset to G => Y section */

Referenced by cmyk_ycck_convert(), rgb_gray_convert(), rgb_ycc_convert(), and rgb_ycc_start().

#define JPEG_INTERNALS

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

Referenced by rgb_ycc_start().

#define R_CB_OFF   (3*(MAXJSAMPLE+1))

Referenced by cmyk_ycck_convert(), rgb_ycc_convert(), and rgb_ycc_start().

#define R_CR_OFF   B_CB_OFF /* B=>Cb, R=>Cr are the same */

Referenced by cmyk_ycck_convert(), and rgb_ycc_convert().

#define R_Y_OFF   0 /* offset to R => Y section */

Referenced by cmyk_ycck_convert(), rgb_gray_convert(), rgb_ycc_convert(), and rgb_ycc_start().

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

Referenced by cmyk_ycck_convert(), rgb_gray_convert(), and rgb_ycc_convert().

#define TABLE_SIZE   (8*(MAXJSAMPLE+1))

Referenced by rgb_ycc_start().

typedef my_color_converter* my_cconvert_ptr

cmyk_ycck_convert	(	j_compress_ptr	cinfo,
		JSAMPARRAY	input_buf,
		JSAMPIMAGE	output_buf,
		JDIMENSION	output_row,
		int	num_rows
	)

References b, B_CB_OFF, B_CR_OFF, B_Y_OFF, col, G_CB_OFF, G_CR_OFF, G_Y_OFF, GETJSAMPLE, inptr, MAXJSAMPLE, num_cols, output_row, R_CB_OFF, R_CR_OFF, R_Y_OFF, my_color_converter::rgb_ycc_tab, SCALEBITS, and while().

Referenced by jinit_color_converter().

grayscale_convert	(	j_compress_ptr	cinfo,
		JSAMPARRAY	input_buf,
		JSAMPIMAGE	output_buf,
		JDIMENSION	output_row,
		int	num_rows
	)

References col, inptr, num_cols, outptr, and output_row.

Referenced by jinit_color_converter(), and jinit_color_deconverter().

jinit_color_converter

(

j_compress_ptr

cinfo

)

References cmyk_ycck_convert(), ERREXIT, grayscale_convert(), JCS_CMYK, JCS_GRAYSCALE, JCS_RGB, JCS_YCbCr, JCS_YCCK, JPOOL_IMAGE, null_convert(), null_method(), my_color_converter::pub, rgb_gray_convert(), rgb_ycc_convert(), rgb_ycc_start(), and SIZEOF.

Referenced by jinit_compress_master().

null_convert	(	j_compress_ptr	cinfo,
		JSAMPARRAY	input_buf,
		JSAMPIMAGE	output_buf,
		JDIMENSION	output_row,
		int	num_rows
	)

References ci, col, inptr, num_cols, outptr, and output_row.

Referenced by jinit_color_converter(), and jinit_color_deconverter().

null_method

(

j_compress_ptr

cinfo

)

Referenced by jinit_color_converter().

rgb_gray_convert	(	j_compress_ptr	cinfo,
		JSAMPARRAY	input_buf,
		JSAMPIMAGE	output_buf,
		JDIMENSION	output_row,
		int	num_rows
	)

References b, B_Y_OFF, col, G_Y_OFF, GETJSAMPLE, inptr, num_cols, outptr, output_row, R_Y_OFF, my_color_converter::rgb_ycc_tab, SCALEBITS, and while().

Referenced by jinit_color_converter().

rgb_ycc_convert	(	j_compress_ptr	cinfo,
		JSAMPARRAY	input_buf,
		JSAMPIMAGE	output_buf,
		JDIMENSION	output_row,
		int	num_rows
	)

References b, B_CB_OFF, B_CR_OFF, B_Y_OFF, col, G_CB_OFF, G_CR_OFF, G_Y_OFF, GETJSAMPLE, inptr, num_cols, output_row, R_CB_OFF, R_CR_OFF, R_Y_OFF, my_color_converter::rgb_ycc_tab, SCALEBITS, and while().

Referenced by jinit_color_converter().

rgb_ycc_start

(

j_compress_ptr

cinfo

)

References B_CB_OFF, B_CR_OFF, B_Y_OFF, CBCR_OFFSET, cinfo, FIX, G_CB_OFF, G_CR_OFF, G_Y_OFF, i, JPOOL_IMAGE, MAXJSAMPLE, ONE_HALF, R_CB_OFF, R_Y_OFF, my_color_converter::rgb_ycc_tab, SIZEOF, and TABLE_SIZE.

Referenced by jinit_color_converter().