CImage_JPEG_streams.cpp File Reference

#include "img-precomp.h"
#include <mrpt/img/CImage.h>
#include <mrpt/io/CStream.h>
#include "CImage_impl.h"
#include <mrpt/3rdparty/do_opencv_includes.h>
#include <cstdio>
#include <jpeglib.h>

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Classes
struct	mrpt_destination_mgr
struct	my_source_mgr

Macros
#define	XMD_H
#define	mrpt_jpeg_source_mgr   jpeg_source_mgr
#define	OUTPUT_BUF_SIZE   4096 /* choose an efficiently fwrite'able size */
#define	INPUT_BUF_SIZE   4096 /* choose an efficiently fread'able size */

Typedefs
using	mrpt_dest_ptr = mrpt_destination_mgr *
using	my_src_ptr = my_source_mgr *

Functions
	init_destination (j_compress_ptr cinfo)
	empty_output_buffer (j_compress_ptr cinfo)
	term_destination (j_compress_ptr cinfo)
	jpeg_stdio_dest (j_compress_ptr cinfo, CStream *out)
	init_source (j_decompress_ptr cinfo)
	fill_input_buffer (j_decompress_ptr cinfo)
	skip_input_data (j_decompress_ptr cinfo, long num_bytes)
	term_source ([[maybe_unused]] j_decompress_ptr cinfo)
	jpeg_stdio_src (j_decompress_ptr cinfo, CStream *in)

Macro Definition Documentation

INPUT_BUF_SIZE

#define INPUT_BUF_SIZE   4096 /* choose an efficiently fread'able size */

Definition at line 163 of file CImage_JPEG_streams.cpp.

Referenced by fill_input_buffer(), and jpeg_stdio_src().

mrpt_jpeg_source_mgr

#define mrpt_jpeg_source_mgr   jpeg_source_mgr

Definition at line 34 of file CImage_JPEG_streams.cpp.

Referenced by jpeg_stdio_src().

OUTPUT_BUF_SIZE

#define OUTPUT_BUF_SIZE   4096 /* choose an efficiently fwrite'able size */

Definition at line 48 of file CImage_JPEG_streams.cpp.

Referenced by empty_output_buffer(), init_destination(), and term_destination().

XMD_H

#define XMD_H

Definition at line 29 of file CImage_JPEG_streams.cpp.

Typedef Documentation

mrpt_dest_ptr

using mrpt_dest_ptr = mrpt_destination_mgr*

Definition at line 46 of file CImage_JPEG_streams.cpp.

my_src_ptr

using my_src_ptr = my_source_mgr*

Definition at line 161 of file CImage_JPEG_streams.cpp.

Function Documentation

empty_output_buffer()

empty_output_buffer

(

j_compress_ptr

cinfo

)

Definition at line 94 of file CImage_JPEG_streams.cpp.

References OUTPUT_BUF_SIZE.

Referenced by jpeg_stdio_dest().

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fill_input_buffer()

fill_input_buffer

(

j_decompress_ptr

cinfo

)

Definition at line 216 of file CImage_JPEG_streams.cpp.

References INPUT_BUF_SIZE, JPEG_EOI, and THROW_EXCEPTION.

Referenced by jpeg_stdio_src(), and skip_input_data().

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init_destination()

init_destination

(

j_compress_ptr

cinfo

)

Definition at line 56 of file CImage_JPEG_streams.cpp.

References mrpt_destination_mgr::buffer, JPOOL_IMAGE, and OUTPUT_BUF_SIZE.

Referenced by jpeg_stdio_dest().

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init_source()

init_source

(

j_decompress_ptr

cinfo

)

Definition at line 171 of file CImage_JPEG_streams.cpp.

Referenced by jpeg_stdio_src().

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jpeg_stdio_dest()

jpeg_stdio_dest	(	j_compress_ptr	cinfo,
		CStream *	out
	)

Definition at line 126 of file CImage_JPEG_streams.cpp.

References empty_output_buffer(), init_destination(), JPOOL_PERMANENT, out, mrpt_destination_mgr::out, mrpt_destination_mgr::pub, and term_destination().

Referenced by mrpt::img::CImage::saveToStreamAsJPEG().

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jpeg_stdio_src()

jpeg_stdio_src	(	j_decompress_ptr	cinfo,
		CStream *	in
	)

Definition at line 309 of file CImage_JPEG_streams.cpp.

References my_source_mgr::buffer, fill_input_buffer(), my_source_mgr::in, init_source(), INPUT_BUF_SIZE, JPOOL_PERMANENT, mrpt_jpeg_source_mgr, my_source_mgr::pub, skip_input_data(), and term_source().

Referenced by mrpt::img::CImage::loadFromStreamAsJPEG().

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skip_input_data()

skip_input_data	(	j_decompress_ptr	cinfo,
		long	num_bytes
	)

Definition at line 256 of file CImage_JPEG_streams.cpp.

References fill_input_buffer().

Referenced by jpeg_stdio_src().

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term_destination()

term_destination

(

j_compress_ptr

cinfo

)

Definition at line 116 of file CImage_JPEG_streams.cpp.

References OUTPUT_BUF_SIZE.

Referenced by jpeg_stdio_dest().

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term_source()

term_source

(

[[maybe_unused] ] j_decompress_ptr

cinfo

)

Definition at line 297 of file CImage_JPEG_streams.cpp.

Referenced by jpeg_stdio_src().

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