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diegorep / pypng

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Chunk level editing is not possible. #7

Open GoogleCodeExporter opened 8 years ago

GoogleCodeExporter commented 8 years ago 
The interface does support "chunk level editing" of a PNG file.  Basically it 
should be possible to 
treat a PNG file as a stream of chunks, and insert, remove, and modify chunks 
on a per chunk 
basis.

The sorts of things that should be easily possible:

Removing tEXt chunks and so on.

Changing the gAMA chunk (with or without changing the pixel data).

Converting greyscale chunk into color type 3 (without changing pixel data).

Combining/splitting IDAT chunks.

... and so on.

Original issue reported on code.google.com by d...@pobox.com on 16 Mar 2009 at 12:43

GoogleCodeExporter commented 8 years ago

Original comment by d...@pobox.com on 16 Mar 2009 at 5:21

GoogleCodeExporter commented 8 years ago

Original comment by d...@pobox.com on 16 Mar 2009 at 5:21