37 lines
936 B
C++
37 lines
936 B
C++
#include "RleDecoder.h"
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using namespace Pinetime::Tools;
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RleDecoder::RleDecoder(const uint8_t* buffer, size_t size) : buffer {buffer}, size {size} {
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}
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RleDecoder::RleDecoder(const uint8_t* buffer, size_t size, uint16_t foregroundColor, uint16_t backgroundColor) : RleDecoder {buffer, size} {
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this->foregroundColor = foregroundColor;
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this->backgroundColor = backgroundColor;
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}
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void RleDecoder::DecodeNext(uint8_t* output, size_t maxBytes) {
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for (; encodedBufferIndex < size; encodedBufferIndex++) {
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uint8_t rl = buffer[encodedBufferIndex] - processedCount;
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while (rl) {
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output[bp] = color >> 8;
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output[bp + 1] = color & 0xff;
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bp += 2;
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rl -= 1;
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processedCount++;
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if (bp >= maxBytes) {
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bp = 0;
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y += 1;
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return;
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}
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}
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processedCount = 0;
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if (color == backgroundColor)
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color = foregroundColor;
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else
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color = backgroundColor;
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}
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}
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