jcsample.c File Reference

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

Data Structures
struct	my_downsampler

Macros
#define	JPEG_INTERNALS

Typedefs
typedef my_downsampler *	my_downsample_ptr

Functions
	expand_right_edge (JSAMPARRAY image_data, int num_rows, JDIMENSION input_cols, JDIMENSION output_cols)
	fullsize_downsample (j_compress_ptr cinfo, jpeg_component_info *compptr, JSAMPARRAY input_data, JSAMPARRAY output_data)
	fullsize_smooth_downsample (j_compress_ptr cinfo, jpeg_component_info *compptr, JSAMPARRAY input_data, JSAMPARRAY output_data)
	h2v1_downsample (j_compress_ptr cinfo, jpeg_component_info *compptr, JSAMPARRAY input_data, JSAMPARRAY output_data)
	h2v2_downsample (j_compress_ptr cinfo, jpeg_component_info *compptr, JSAMPARRAY input_data, JSAMPARRAY output_data)
	h2v2_smooth_downsample (j_compress_ptr cinfo, jpeg_component_info *compptr, JSAMPARRAY input_data, JSAMPARRAY output_data)
	int_downsample (j_compress_ptr cinfo, jpeg_component_info *compptr, JSAMPARRAY input_data, JSAMPARRAY output_data)
	jinit_downsampler (j_compress_ptr cinfo)
typedef	JMETHOD (void, downsample1_ptr,(j_compress_ptr cinfo, jpeg_component_info *compptr, JSAMPARRAY input_data, JSAMPARRAY output_data))
	sep_downsample (j_compress_ptr cinfo, JSAMPIMAGE input_buf, JDIMENSION in_row_index, JSAMPIMAGE output_buf, JDIMENSION out_row_group_index)
	start_pass_downsample (j_compress_ptr cinfo)

#define JPEG_INTERNALS

typedef my_downsampler* my_downsample_ptr

expand_right_edge	(	JSAMPARRAY	image_data,
		int	num_rows,
		JDIMENSION	input_cols,
		JDIMENSION	output_cols
	)

References count, num_rows, and row.

Referenced by fullsize_downsample(), fullsize_smooth_downsample(), h2v1_downsample(), h2v2_downsample(), h2v2_smooth_downsample(), and int_downsample().

fullsize_downsample	(	j_compress_ptr	cinfo,
		jpeg_component_info *	compptr,
		JSAMPARRAY	input_data,
		JSAMPARRAY	output_data
	)

References DCTSIZE, expand_right_edge(), and jcopy_sample_rows().

Referenced by jinit_downsampler().

fullsize_smooth_downsample	(	j_compress_ptr	cinfo,
		jpeg_component_info *	compptr,
		JSAMPARRAY	input_data,
		JSAMPARRAY	output_data
	)

References DCTSIZE, expand_right_edge(), GETJSAMPLE, inptr, and outptr.

Referenced by jinit_downsampler().

h2v1_downsample	(	j_compress_ptr	cinfo,
		jpeg_component_info *	compptr,
		JSAMPARRAY	input_data,
		JSAMPARRAY	output_data
	)

References DCTSIZE, expand_right_edge(), GETJSAMPLE, inptr, and outptr.

Referenced by jinit_downsampler().

h2v2_downsample	(	j_compress_ptr	cinfo,
		jpeg_component_info *	compptr,
		JSAMPARRAY	input_data,
		JSAMPARRAY	output_data
	)

References DCTSIZE, expand_right_edge(), GETJSAMPLE, and outptr.

Referenced by jinit_downsampler().

h2v2_smooth_downsample	(	j_compress_ptr	cinfo,
		jpeg_component_info *	compptr,
		JSAMPARRAY	input_data,
		JSAMPARRAY	output_data
	)

References DCTSIZE, expand_right_edge(), GETJSAMPLE, and outptr.

Referenced by jinit_downsampler().

int_downsample	(	j_compress_ptr	cinfo,
		jpeg_component_info *	compptr,
		JSAMPARRAY	input_data,
		JSAMPARRAY	output_data
	)

References DCTSIZE, expand_right_edge(), GETJSAMPLE, inptr, and outptr.

Referenced by jinit_downsampler().

jinit_downsampler

(

j_compress_ptr

cinfo

)

References ci, compptr, ERREXIT, FALSE, fullsize_downsample(), fullsize_smooth_downsample(), h2v1_downsample(), h2v2_downsample(), h2v2_smooth_downsample(), jpeg_component_info::h_samp_factor, int_downsample(), JPOOL_IMAGE, my_downsampler::methods, jpeg_downsampler::need_context_rows, my_downsampler::pub, sep_downsample(), SIZEOF, start_pass_downsample(), TRACEMS(), TRUE, and jpeg_component_info::v_samp_factor.

Referenced by jinit_compress_master().

typedef JMETHOD	(	void	,
		downsample1_ptr	,
		(j_compress_ptr cinfo, jpeg_component_info *compptr, JSAMPARRAY input_data, JSAMPARRAY output_data)
	)

sep_downsample	(	j_compress_ptr	cinfo,
		JSAMPIMAGE	input_buf,
		JDIMENSION	in_row_index,
		JSAMPIMAGE	output_buf,
		JDIMENSION	out_row_group_index
	)

References ci, compptr, for(), my_downsampler::methods, and jpeg_component_info::v_samp_factor.

Referenced by jinit_downsampler().

start_pass_downsample

(

j_compress_ptr

cinfo

)

Referenced by jinit_downsampler().