[GRASS5] r.in.png changes

[Glynn Clements]

Glynn Clements wrote:

> > I've made some modifications to r.in.tiff to hopefully make it a bit
> > more useable.  I completely removed all of the color reduction
> > code and am just forcing all RGB TIFF's into respective band files.
> 
> I've done something similar for r.in.png.
> 
> It now supports paletted, grey-scale and true-colour images, with or
> without an alpha channel. In all cases, pixel values are imported
> verbatim, including sBIT information (where present) and
> 16-bit-per-component images; any translations are performed in the
> colour table.

I've tested all of the options for which I can actually generate test
images (8-bit grey, paletted and true-color formats, alpha channel,
transparency, gamma setting, and interlace).

However, I haven't been able to generate test images with bit depths
other than 8, or with sBIT information. Does anyone know of programs
which can generate a greater variety of PNG image formats?

-- 
Glynn Clements <glynn.clements at virgin.net>