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1a3d6b125d
## Summary * Builds on top of https://github.com/daveallie/crosspoint-reader/pull/16 - adresses https://github.com/daveallie/crosspoint-reader/discussions/14 * This PR adds the ability for the user to supply a custom `sleep.bmp` image at the root of the SD card that will be shown instead of the default sleep screen if present. * Supports: * Different BPPs: * 1bit * 2bit * 8bit * 24bit * 32bit (with alpha-channel ignored) * Grayscale rendering --------- Co-authored-by: Sam Davis <sam@sjd.co>
53 lines
1.0 KiB
C++
53 lines
1.0 KiB
C++
#pragma once
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#include <FS.h>
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enum class BmpReaderError : uint8_t {
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Ok = 0,
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FileInvalid,
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SeekStartFailed,
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NotBMP,
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DIBTooSmall,
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BadPlanes,
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UnsupportedBpp,
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UnsupportedCompression,
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BadDimensions,
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PaletteTooLarge,
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SeekPixelDataFailed,
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BufferTooSmall,
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OomRowBuffer,
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ShortReadRow,
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};
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class Bitmap {
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public:
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static const char* errorToString(BmpReaderError err);
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explicit Bitmap(File& file) : file(file) {}
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BmpReaderError parseHeaders();
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BmpReaderError readRow(uint8_t* data, uint8_t* rowBuffer) const;
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BmpReaderError rewindToData() const;
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int getWidth() const { return width; }
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int getHeight() const { return height; }
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bool isTopDown() const { return topDown; }
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bool hasGreyscale() const { return bpp > 1; }
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int getRowBytes() const { return rowBytes; }
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private:
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static uint16_t readLE16(File& f);
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static uint32_t readLE32(File& f);
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File& file;
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int width = 0;
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int height = 0;
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bool topDown = false;
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uint32_t bfOffBits = 0;
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uint16_t bpp = 0;
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int rowBytes = 0;
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uint8_t paletteLum[256] = {};
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};
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