jdmerge.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_upsampler *	my_upsample_ptr

Functions
	build_ycc_rgb_table (j_decompress_ptr cinfo)
	start_pass_merged_upsample (j_decompress_ptr cinfo)
	merged_2v_upsample (j_decompress_ptr cinfo, JSAMPIMAGE input_buf, JDIMENSION *in_row_group_ctr, JDIMENSION in_row_groups_avail, JSAMPARRAY output_buf, JDIMENSION *out_row_ctr, JDIMENSION out_rows_avail)
	merged_1v_upsample (j_decompress_ptr cinfo, JSAMPIMAGE input_buf, JDIMENSION *in_row_group_ctr, JDIMENSION in_row_groups_avail, JSAMPARRAY output_buf, JDIMENSION *out_row_ctr, JDIMENSION out_rows_avail)
	h2v1_merged_upsample (j_decompress_ptr cinfo, JSAMPIMAGE input_buf, JDIMENSION in_row_group_ctr, JSAMPARRAY output_buf)
	h2v2_merged_upsample (j_decompress_ptr cinfo, JSAMPIMAGE input_buf, JDIMENSION in_row_group_ctr, JSAMPARRAY output_buf)
	jinit_merged_upsampler (j_decompress_ptr cinfo)

Macro Definition Documentation

FIX

#define FIX

(

x

)

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

Definition at line 74 of file jdmerge.c.

Referenced by build_ycc_rgb_table().

JPEG_INTERNALS

#define JPEG_INTERNALS

Definition at line 35 of file jdmerge.c.

ONE_HALF

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

Definition at line 73 of file jdmerge.c.

Referenced by build_ycc_rgb_table().

SCALEBITS

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

Definition at line 72 of file jdmerge.c.

Referenced by build_ycc_rgb_table(), h2v1_merged_upsample(), and h2v2_merged_upsample().

Typedef Documentation

my_upsample_ptr

typedef my_upsampler* my_upsample_ptr

Definition at line 70 of file jdmerge.c.

Function Documentation

build_ycc_rgb_table()

build_ycc_rgb_table

(

j_decompress_ptr

cinfo

)

Definition at line 83 of file jdmerge.c.

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

Referenced by jinit_merged_upsampler().

h2v1_merged_upsample()

h2v1_merged_upsample	(	j_decompress_ptr	cinfo,
		JSAMPIMAGE	input_buf,
		JDIMENSION	in_row_group_ctr,
		JSAMPARRAY	output_buf
	)

Definition at line 226 of file jdmerge.c.

References for(), GETJSAMPLE, int, METHODDEF, output_buf, RIGHT_SHIFT, SCALEBITS, and SHIFT_TEMPS.

Referenced by jinit_merged_upsampler().

h2v2_merged_upsample()

h2v2_merged_upsample	(	j_decompress_ptr	cinfo,
		JSAMPIMAGE	input_buf,
		JDIMENSION	in_row_group_ctr,
		JSAMPARRAY	output_buf
	)

Definition at line 288 of file jdmerge.c.

References for(), GETJSAMPLE, GLOBAL, int, output_buf, RIGHT_SHIFT, SCALEBITS, and SHIFT_TEMPS.

Referenced by jinit_merged_upsampler().

jinit_merged_upsampler()

jinit_merged_upsampler

(

j_decompress_ptr

cinfo

)

Definition at line 370 of file jdmerge.c.

References build_ycc_rgb_table(), FALSE, h2v1_merged_upsample(), h2v2_merged_upsample(), JPOOL_IMAGE, merged_1v_upsample(), merged_2v_upsample(), NULL, SIZEOF, and start_pass_merged_upsample().

Referenced by master_selection().

merged_1v_upsample()

merged_1v_upsample	(	j_decompress_ptr	cinfo,
		JSAMPIMAGE	input_buf,
		JDIMENSION *	in_row_group_ctr,
		JDIMENSION	in_row_groups_avail,
		JSAMPARRAY	output_buf,
		JDIMENSION *	out_row_ctr,
		JDIMENSION	out_rows_avail
	)

Definition at line 193 of file jdmerge.c.

References METHODDEF, and output_buf.

Referenced by jinit_merged_upsampler().

merged_2v_upsample()

merged_2v_upsample	(	j_decompress_ptr	cinfo,
		JSAMPIMAGE	input_buf,
		JDIMENSION *	in_row_group_ctr,
		JDIMENSION	in_row_groups_avail,
		JSAMPARRAY	output_buf,
		JDIMENSION *	out_row_ctr,
		JDIMENSION	out_rows_avail
	)

Definition at line 144 of file jdmerge.c.

References FALSE, if(), jcopy_sample_rows(), METHODDEF, num_rows, and TRUE.

Referenced by jinit_merged_upsampler().

start_pass_merged_upsample()

start_pass_merged_upsample

(

j_decompress_ptr

cinfo

)

Definition at line 126 of file jdmerge.c.

References FALSE.

Referenced by jinit_merged_upsampler().