\defgroup jpeg JPEG - JPEG File Interchange Format
* \section Description
*
* \par
* ISO/IEC 10918 (1994, 1995, 1997, 1999)\n
* http://www.jpeg.org/
* \par
* Access to the JPEG file format uses libjpeg version 8c. \n
* http://www.ijg.org \n
* Copyright (C) 1994-2011, Thomas G. Lane, Guido Vollbeding \n
* from the Independent JPEG Group.
* \par
* Access to the EXIF attributes uses libEXIF version 0.6.20. \n
* http://sourceforge.net/projects/libexif \n
* Copyright (C) 2001-2010, Lutz Müller
*
* \section Features
*
\verbatim
Data Types: Byte
Color Spaces: Gray, RGB, CMYK and YCbCr (Binary Saved as Gray)
Compressions:
JPEG - ISO JPEG default
Only one image.
No alpha channel.
Internally the components are always packed.
Internally the lines are arranged from top down to bottom.
Handle(1) returns jpeg_decompress_struct* when reading, and
jpeg_compress_struct* when writing (libJPEG structures).
Changes to libJPEG:
jdatadst.c - fflush and ferror replaced by macros JFFLUSH and JFERROR.
jinclude.h - standard JFFLUSH and JFERROR definitions, and new macro HAVE_JFIO.
new file created: jconfig.h from jconfig.txt
Changes to libEXIF:
new files config.h and _stdint.h
small fixes in exif-entry.c, exif-loader.c, exif-tag.c, mnote-fuji-tag.h and mnote-olympus-tag.h
Comments:
Other APPx markers are ignored.
No thumbnail support.
RGB images are automatically converted to YCbCr when saved.
Also YcbCr are automatically converted to RGB when loaded. Use AutoYCbCr=0 to disable this behavior.
\endverbatim
* \ingroup format
\defgroup jpeg JPEG - JPEG File Interchange Format * \section Description * * \par * ISO/IEC 10918 (1994, 1995, 1997, 1999)\n * http://www.jpeg.org/ * \par * Access to the JPEG file format uses libjpeg version 8c. \n * http://www.ijg.org \n * Copyright (C) 1994-2011, Thomas G. Lane, Guido Vollbeding \n * from the Independent JPEG Group. * \par * Access to the EXIF attributes uses libEXIF version 0.6.20. \n * http://sourceforge.net/projects/libexif \n * Copyright (C) 2001-2010, Lutz Müller * * \section Features * \verbatim Data Types: Byte Color Spaces: Gray, RGB, CMYK and YCbCr (Binary Saved as Gray) Compressions: JPEG - ISO JPEG default Only one image. No alpha channel. Internally the components are always packed. Internally the lines are arranged from top down to bottom. Handle(1) returns jpeg_decompress_struct* when reading, and jpeg_compress_struct* when writing (libJPEG structures).
Attributes: AutoYCbCr IM_INT (1) (controls YCbCr auto conversion) default 1 JPEGQuality IM_INT (1) [0-100, default 75] (write only) ResolutionUnit (string) ["DPC", "DPI"] XResolution, YResolution IM_FLOAT (1) Interlaced (same as Progressive) IM_INT (1 | 0) default 0 Description (string) (lots of Exif tags)
Changes to libJPEG: jdatadst.c - fflush and ferror replaced by macros JFFLUSH and JFERROR. jinclude.h - standard JFFLUSH and JFERROR definitions, and new macro HAVE_JFIO. new file created: jconfig.h from jconfig.txt
Changes to libEXIF: new files config.h and _stdint.h small fixes in exif-entry.c, exif-loader.c, exif-tag.c, mnote-fuji-tag.h and mnote-olympus-tag.h
Comments: Other APPx markers are ignored. No thumbnail support. RGB images are automatically converted to YCbCr when saved. Also YcbCr are automatically converted to RGB when loaded. Use AutoYCbCr=0 to disable this behavior. \endverbatim * \ingroup format