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