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tiff compression patch :) 

SVN revision: 6657
This commit is contained in:
Carsten Haitzler 2003-02-04 22:06:03 +00:00
parent 2e36c63550
commit 5d90df453c
2 changed files with 46 additions and 4 deletions
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2
AUTHORS
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@ -22,4 +22,4 @@ Carsten Pfeiffer <carpdjih@sp.zrz.tu-berlin.de>
Lightman (Franz Marini) <marini@pcmenelao.mi.infn.it>
Mark Bainter <mark-e@cymry.org>
Brian Lindholm <lindholm@aol.com>
Renchi Raju <renchi@pooh.tam.uiuc.edu>

48
loaders/loader_tiff.c
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@ -286,8 +286,12 @@ save (ImlibImage *im, ImlibProgressFunction progress,
uint8 r, g, b, a;
int has_alpha = IMAGE_HAS_ALPHA(im);
int i = 0, pl = 0;
char pper = 0;
char pper = 0;
/* By default uses patent-free use COMPRESSION_DEFLATE,
another lossless compression technique */
ImlibImageTag *tag;
int compression_type = COMPRESSION_DEFLATE;
if (!im->data)
return 0;
@ -305,7 +309,45 @@ save (ImlibImage *im, ImlibProgressFunction progress,
TIFFSetField(tif, TIFFTAG_PLANARCONFIG, PLANARCONFIG_CONTIG);
TIFFSetField(tif, TIFFTAG_ORIENTATION, ORIENTATION_TOPLEFT);
TIFFSetField(tif, TIFFTAG_RESOLUTIONUNIT, RESUNIT_NONE);
TIFFSetField(tif, TIFFTAG_COMPRESSION, COMPRESSION_LZW);
/* look for tags attached to image to get extra parameters like quality */
/* settings etc. - this is the "api" to hint for extra information for */
/* saver modules */
/* compression */
tag = __imlib_GetTag(im, "compression_type");
if (tag) {
compression_type = tag->val;
switch (compression_type) {
case COMPRESSION_NONE: break;
case COMPRESSION_CCITTRLE: break;
case COMPRESSION_CCITTFAX3: break;
case COMPRESSION_CCITTFAX4: break;
case COMPRESSION_LZW: break;
case COMPRESSION_OJPEG: break;
case COMPRESSION_JPEG: break;
case COMPRESSION_NEXT: break;
case COMPRESSION_CCITTRLEW: break;
case COMPRESSION_PACKBITS: break;
case COMPRESSION_THUNDERSCAN: break;
case COMPRESSION_IT8CTPAD: break;
case COMPRESSION_IT8LW: break;
case COMPRESSION_IT8MP: break;
case COMPRESSION_IT8BL: break;
case COMPRESSION_PIXARFILM: break;
case COMPRESSION_PIXARLOG: break;
case COMPRESSION_DEFLATE: break;
case COMPRESSION_ADOBE_DEFLATE: break;
case COMPRESSION_DCS: break;
case COMPRESSION_JBIG: break;
case COMPRESSION_SGILOG: break;
case COMPRESSION_SGILOG24: break;
default: compression_type = COMPRESSION_DEFLATE;
}
}
TIFFSetField(tif, TIFFTAG_COMPRESSION, compression_type);
if (has_alpha)
{
TIFFSetField(tif, TIFFTAG_SAMPLESPERPIXEL, 4);