mirror of
https://github.com/daveallie/crosspoint-reader.git
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fbda7aa4f1
- Add 1-bit BMP generation with Atkinson dithering for better quality thumbnails - Replace noise dithering with error diffusion for smoother gradients - Add fillPolygon() to GfxRenderer for proper bookmark ribbon shape - Change bookmark from rect+triangle carve to pentagon polygon - Fix bookmark inversion when Continue Reading card is selected - Show selection state on first render (not just after navigation) - Fix 1-bit BMP palette lookup in Bitmap::readRow() - Add drawBitmap1Bit() optimized path for 1-bit BMPs The 1-bit format eliminates gray passes on home screen for faster rendering while Atkinson dithering maintains good image quality through error diffusion.
20 lines
904 B
C++
20 lines
904 B
C++
#pragma once
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class FsFile;
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class Print;
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class ZipFile;
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class JpegToBmpConverter {
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static unsigned char jpegReadCallback(unsigned char* pBuf, unsigned char buf_size,
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unsigned char* pBytes_actually_read, void* pCallback_data);
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static bool jpegFileToBmpStreamInternal(class FsFile& jpegFile, Print& bmpOut, int targetWidth, int targetHeight,
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bool oneBit);
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public:
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static bool jpegFileToBmpStream(FsFile& jpegFile, Print& bmpOut);
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// Convert with custom target size (for thumbnails)
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static bool jpegFileToBmpStreamWithSize(FsFile& jpegFile, Print& bmpOut, int targetMaxWidth, int targetMaxHeight);
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// Convert to 1-bit BMP (black and white only, no grays) for fast home screen rendering
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static bool jpegFileTo1BitBmpStreamWithSize(FsFile& jpegFile, Print& bmpOut, int targetMaxWidth, int targetMaxHeight);
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};
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