c90304f59b
Cherry-picked from upstream PR #465 Resolved conflicts: merged crop parameter with existing progressCallback, kept local dimension calculation and edge luminance caching logic
27 lines
1.4 KiB
C++
27 lines
1.4 KiB
C++
#pragma once
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#include <functional>
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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, bool crop,
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const std::function<void(int)>& progressCallback = nullptr);
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public:
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static bool jpegFileToBmpStream(FsFile& jpegFile, Print& bmpOut, bool crop = true);
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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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const std::function<void(int)>& progressCallback = nullptr);
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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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const std::function<void(int)>& progressCallback = nullptr);
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// Get JPEG dimensions without full conversion
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static bool getJpegDimensions(FsFile& jpegFile, int& width, int& height);
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};
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