76 lines
2.2 KiB
C
76 lines
2.2 KiB
C
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/** \file
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* \brief Register the JP2 Format
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*
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* See Copyright Notice in im_lib.h
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*/
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#ifndef __IM_FORMAT_JP2_H
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#define __IM_FORMAT_JP2_H
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#if defined(__cplusplus)
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extern "C" {
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#endif
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/** \defgroup jp2 JP2 - JPEG-2000 JP2 File Format
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* \section Description
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*
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* \par
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* ISO/IEC 15444 (2000, 2003)\n
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* http://www.jpeg.org/
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* \par
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* You must link the application with "im_jp2.lib"
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* and you must call the function \ref imFormatRegisterJP2 once
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* to register the format into the IM core library.
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* In Lua call require"imlua_jp2". \n
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* \par
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* Access to the JPEG2000 file format uses libJasper version 2.0.14 \n
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* https://www.ece.uvic.ca/~frodo/jasper/ \n
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* Copyright (c) 2001-2016 Michael David Adams. \n
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*
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* \par
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* See \ref im_format_jp2.h
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*
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* \section Features
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*
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\verbatim
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Data Types: Byte and UShort
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Color Spaces: Binary, Gray, RGB, YCbCr, Lab and XYZ
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Compressions:
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JPEG-2000 - ISO JPEG 2000 [default]
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Only one image.
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Can have an alpha channel.
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Internally the components are always unpacked.
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Internally the lines are arranged from top down to bottom.
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Handle(1) returns jas_image_t*
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Handle(2) returns jas_stream_t*
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Attributes:
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CompressionRatio IM_FLOAT (1) [write only, example: Ratio=7 just like 7:1]
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Comments:
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We read code stream syntax and JP2, but we write always as JP2.
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Used definitions EXCLUDE_JPG_SUPPORT,EXCLUDE_MIF_SUPPORT,
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EXCLUDE_PNM_SUPPORT,EXCLUDE_RAS_SUPPORT,
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EXCLUDE_BMP_SUPPORT,EXCLUDE_PGX_SUPPORT
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Changed jas_config.h to match our needs.
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New file jas_binfile.c
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Changed base/jas_stream.c to export jas_stream_create and jas_stream_initbuf.
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The counter is for memory transfer only.
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These changes can be ignored when using an external libJasper distribution,
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but in this case the imBinFile global features will not work.
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\endverbatim
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* \ingroup format */
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/** Register the JP2 Format. \n
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* In Lua, when using require"imlua_jp2" this function will be automatically called.
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* \ingroup jp2 */
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void imFormatRegisterJP2(void);
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#if defined(__cplusplus)
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}
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#endif
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#endif
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