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Rev Age Author Path Log message Diff
8497 1224 d 22 h dunkaist /programs/ kiv and libimg.asm: Follow asm style guide, no semantic changes.  
8463 1233 d 14 h IgorA /programs/develop/libraries/libs-dev/ libimg: can save 32 bit png  
8449 1236 d 5 h dunkaist /programs/develop/libraries/libs-dev/libimg/ libimg: Improve support of transparent PNG images.

* Support grayscale images with alpha channel.
* Support rgb images with transparent color.
* Process 'tRNS' chunk (simple transparency).

Transparent png images were already supported for color type 6, which
is RGBA. Now indexed images (color type 3) can also have transparency
via 'tRNS' chunk data.
 
8408 1240 d 11 h IgorA /programs/ tinygl: add some double functions, add bcc32 example
libimg: small optimize
 
8399 1241 d 6 h dunkaist /programs/develop/libraries/libs-dev/libimg/png/ libimg: fix transparency in indexed png images.  
8395 1241 d 9 h dunkaist /programs/develop/libraries/libs-dev/libimg/ libimg: export img.resize_data  
8394 1241 d 10 h dunkaist /programs/develop/libraries/libs-dev/libimg/ libimg: transparency fixes.

img.convert doesn't make opaque pixels transparent.
gif decoder considers palette pixels opaque.
 
8363 1244 d 0 h leency /programs/ libimg: img.decode now checks that length is not null
WebView: img tag: proceed data-src= if src= is empty, fix crash
 
8341 1246 d 10 h dunkaist /programs/develop/libraries/libs-dev/libimg/ libimg: Add and export img.blend function  
7735 1522 d 15 h dunkaist /programs/develop/libraries/libs-dev/libimg/ libimg: tiff: Don't rely on EOI tag at the end of the strip.

Reference implementation (libtiff) has a workaround: precalculate data
size of the strip and don't rely on EOI tag of specific bit length.

This allow to read some invalid TIFF LZW images by my old scanner.
 
7523 2012 d 10 h dunkaist /programs/develop/libraries/libs-dev/libimg/bmp/ Libimg: Fix bug with 16-bit BMP padding.  
7279 2184 d 11 h IgorA /programs/develop/libraries/libs-dev/libimg/png/ libimg: fix save small png images  
7105 2380 d 6 h dunkaist /programs/develop/libraries/libs-dev/libimg/ libimg: add img.from_file, refactor img.convert.

Add new function, img.from_file: gets file name and returns decoded Image.
Make img.convert code less spaghetti: use jump table, not a chain of jmp's.
 
6891 2565 d 18 h IgorA / update docs sys function 54.1  
6888 2576 d 18 h IgorA /programs/ add filter 'paeth', fix in 'build_bl_tree'  
6883 2588 d 21 h IgorA /programs/ fix continue crc calculation in 'archiver.obj'  
6881 2594 d 9 h IgorA /programs/ small fixes  
6873 2621 d 8 h IgorA /programs/ fix calculation 'adler32',
other small fixes
 
6870 2625 d 9 h IgorA /programs/ fix r6860, small change in 'libimg.obj'  
6807 2693 d 4 h dunkaist /programs/develop/libraries/libs-dev/libimg/ img.scale and img.convert fix for multiframe images
new function: img.get_scaled_size
 

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