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LibGfx: Add a .pam loader

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.pam is a "portrable arbitrarymap" as documented at
https://netpbm.sourceforge.net/doc/pam.html

It's very similar to .pbm, .pgm, and .ppm, so this uses the
PortableImageMapLoader framework. The header is slightly different,
so this has a custom header parsing function.

Also, .pam only exixts in binary form, so the ascii form support
becomes optional.
This commit is contained in:
Nico Weber 2024-01-24 21:27:24 -05:00 • committed by Andreas Kling
parent 0d76a9da17
commit 187862ebe0
9 changed files with 173 additions and 9 deletions
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2
Userland/Libraries/LibGfx/ImageFormats/ImageDecoder.cpp
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@ -13,6 +13,7 @@
#include <LibGfx/ImageFormats/ImageDecoder.h>
#include <LibGfx/ImageFormats/JPEGLoader.h>
#include <LibGfx/ImageFormats/JPEGXLLoader.h>
#include <LibGfx/ImageFormats/PAMLoader.h>
#include <LibGfx/ImageFormats/PBMLoader.h>
#include <LibGfx/ImageFormats/PGMLoader.h>
#include <LibGfx/ImageFormats/PNGLoader.h>
@ -40,6 +41,7 @@ static OwnPtr<ImageDecoderPlugin> probe_and_sniff_for_appropriate_plugin(Readonl
{ ILBMImageDecoderPlugin::sniff, ILBMImageDecoderPlugin::create },
{ JPEGImageDecoderPlugin::sniff, JPEGImageDecoderPlugin::create },
{ JPEGXLImageDecoderPlugin::sniff, JPEGXLImageDecoderPlugin::create },
{ PAMImageDecoderPlugin::sniff, PAMImageDecoderPlugin::create },
{ PBMImageDecoderPlugin::sniff, PBMImageDecoderPlugin::create },
{ PGMImageDecoderPlugin::sniff, PGMImageDecoderPlugin::create },
{ PNGImageDecoderPlugin::sniff, PNGImageDecoderPlugin::create },