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3 commits

Author SHA1 Message Date
Ben Wiederhake
f2f0c22052 LibGfx: Mark compilation-unit-only functions as static
This enables a nice warning in case a function becomes dead code.
2020-08-12 20:40:59 +02:00
asynts
b3d1a05261 Refactor: Expose const_cast by removing ByteBuffer::warp(const void*, size_t)
This function did a const_cast internally which made the call side look
"safe". This method is removed completely and call sites are replaced
with ByteBuffer::wrap(const_cast<void*>(data), size) which makes the
behaviour obvious.
2020-08-06 10:33:16 +02:00
Matthew Olsson
4e093a7c23 LibGfx: Add BMP loader
Adds an *almost fully featured BMP loader to process .bmp files.

Features:
- All header formats are supported
- Full RLE4/8/24 support
- Color scaling (e.g. distributing a 5-bit color throughout the 8-bit
color spectrum, so 5-bit white is still 0xffffff)
- Full BITMASK/ALPHABITMASK support

*Not included:
- 1D Huffman compression. Good luck actually finding a bmp in the wild
that uses this
- Use of any field in the V4/V5 header. Color spaces? Endpoints? No
thanks :)

This loader was tested with the images at
https://entropymine.com/jason/bmpsuite/bmpsuite/html/bmpsuite.html. This
loader correctly displays 81 out of the 90 total images (for reference,
firefox displays 64 correctly). Note that not rendering the images at
the bottom is counted as displaying correctly.
2020-06-21 10:08:25 +02:00