34 lines
982 B
C
34 lines
982 B
C
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#pragma once
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#include <cstdint>
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#include <cstddef>
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namespace Pinetime {
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namespace Tools {
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/* 1-bit RLE decoder. Provide the encoded buffer to the constructor and then call DecodeNext() by
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* specifying the output (decoded) buffer and the maximum number of bytes this buffer can handle.
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*
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* Code from https://github.com/daniel-thompson/wasp-bootloader by Daniel Thompson released under the MIT license.
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*/
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class RleDecoder {
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public:
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RleDecoder(const uint8_t* buffer, size_t size);
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RleDecoder(const uint8_t* buffer, size_t size, uint16_t foregroundColor, uint16_t backgroundColor);
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void DecodeNext(uint8_t* output, size_t maxBytes);
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private:
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const uint8_t* buffer;
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size_t size;
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int encodedBufferIndex = 0;
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int y = 0;
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uint16_t bp = 0;
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uint16_t foregroundColor = 0xffff;
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uint16_t backgroundColor = 0;
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uint16_t color = backgroundColor;
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int processedCount = 0;
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};
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}
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}
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