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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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1
Userland/Libraries/LibCore/MimeData.cpp
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@ -124,6 +124,7 @@ static Array const s_registered_mime_type = {
MimeType { .name = "image/webp"sv, .common_extensions = { ".webp"sv }, .description = "WebP image data"sv, .magic_bytes = Vector<u8> { 'W', 'E', 'B', 'P' }, .offset = 8 },
MimeType { .name = "image/x-icon"sv, .common_extensions = { ".ico"sv }, .description = "ICO image data"sv },
MimeType { .name = "image/x-ilbm"sv, .common_extensions = { ".iff"sv, ".lbm"sv }, .description = "Interleaved bitmap image data"sv, .magic_bytes = Vector<u8> { 0x46, 0x4F, 0x52, 0x4F } },
MimeType { .name = "image/x-portable-arbitrarymap"sv, .common_extensions = { ".pam"sv }, .description = "PAM image data"sv, .magic_bytes = Vector<u8> { 0x50, 0x37, 0x0A } },
MimeType { .name = "image/x-portable-bitmap"sv, .common_extensions = { ".pbm"sv }, .description = "PBM image data"sv, .magic_bytes = Vector<u8> { 0x50, 0x31, 0x0A } },
MimeType { .name = "image/x-portable-graymap"sv, .common_extensions = { ".pgm"sv }, .description = "PGM image data"sv, .magic_bytes = Vector<u8> { 0x50, 0x32, 0x0A } },
MimeType { .name = "image/x-portable-pixmap"sv, .common_extensions = { ".ppm"sv }, .description = "PPM image data"sv, .magic_bytes = Vector<u8> { 0x50, 0x33, 0x0A } },