2007-07-27 Raphael Quinet <raphael@gimp.org>
* plug-ins/jpeg/jpeg-quality.c (jpeg_detect_quality): simplify the
formula so that it returns a slightly lower estimated quality when
there is no exact match with the IJG quantization tables.
svn path=/trunk/; revision=23041
2007-07-26 Raphael Quinet <raphael@gimp.org>
* plug-ins/jpeg/Makefile.am
* plug-ins/jpeg/jpeg-quality.[ch]
* plug-ins/jpeg/jpeg-settings.[ch]: new files including functions
for detecting the quality setting of existing JPEG files by
analyzing their quantization tables, functions for storing this
quality and other JPEG settings in a parasite, and functions for
restoring these values.
* plug-ins/jpeg/jpeg-load.c (load_image): save the original JPEG
settings in a parasite after reading the JPEG header.
* plug-ins/jpeg/jpeg.c (run): restore the original JPEG settings
if they had been attached to a parasite and if they are better
than the defaults.
* plug-ins/jpeg/jpeg-save.c (save_image): added new type of
subsampling 1x2,1x1,1x1, which is useful for images with height >
width such as rotated images from some cameras.
(save_dialog): added hints about how the subsampling types can be
used, marked these strings as translatable.
* plug-ins/jpeg/jpegqual.c: new utility to report the quality
settings and sampling factors of existing JPEG files.
svn path=/trunk/; revision=23018
