jcsample.cpp File Reference

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

Go to the source code of this file.

Classes
struct	my_downsampler

Macros
#define	JPEG_INTERNALS

Typedefs
typedef my_downsampler *	my_downsample_ptr

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

Macro Definition Documentation

JPEG_INTERNALS

#define JPEG_INTERNALS

Definition at line 10 of file jcsample.cpp.

Typedef Documentation

my_downsample_ptr

typedef my_downsampler* my_downsample_ptr

Definition at line 29 of file jcsample.cpp.

Function Documentation

expand_right_edge()

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

Definition at line 43 of file jcsample.cpp.

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

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fullsize_downsample()

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

Definition at line 150 of file jcsample.cpp.

References compptr, DCTSIZE, expand_right_edge(), jcopy_sample_rows(), and jpeg_component_info::width_in_blocks.

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fullsize_smooth_downsample()

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

Definition at line 375 of file jcsample.cpp.

References compptr, DCTSIZE, expand_right_edge(), GETJSAMPLE, inptr, outptr, jpeg_component_info::v_samp_factor, and jpeg_component_info::width_in_blocks.

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h2v1_downsample()

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

Definition at line 177 of file jcsample.cpp.

References compptr, DCTSIZE, expand_right_edge(), GETJSAMPLE, inptr, outptr, jpeg_component_info::v_samp_factor, and jpeg_component_info::width_in_blocks.

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h2v2_downsample()

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

Definition at line 217 of file jcsample.cpp.

References compptr, DCTSIZE, expand_right_edge(), GETJSAMPLE, outptr, jpeg_component_info::v_samp_factor, and jpeg_component_info::width_in_blocks.

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h2v2_smooth_downsample()

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

Definition at line 265 of file jcsample.cpp.

References compptr, DCTSIZE, expand_right_edge(), GETJSAMPLE, outptr, jpeg_component_info::v_samp_factor, and jpeg_component_info::width_in_blocks.

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int_downsample()

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

Definition at line 98 of file jcsample.cpp.

References compptr, DCTSIZE, expand_right_edge(), GETJSAMPLE, jpeg_component_info::h_samp_factor, inptr, outptr, jpeg_component_info::v_samp_factor, and jpeg_component_info::width_in_blocks.

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jinit_downsampler()

jinit_downsampler

(

j_compress_ptr

cinfo

)

Definition at line 452 of file jcsample.cpp.

Referenced by jinit_compress_master().

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JMETHOD()

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

sep_downsample()

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

Definition at line 71 of file jcsample.cpp.

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

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start_pass_downsample()

start_pass_downsample

(

j_compress_ptr

)

Definition at line 36 of file jcsample.cpp.