private void ProcessChunk(byte[] chunkBytes)
{
var chunkTypeString = PngChunk.GetChunkTypeString(chunkBytes.Skip(4).Take(4).ToArray());
if (!(chunkTypeString == "IHDR"))
{
if (!(chunkTypeString == "PLTE"))
{
if (!(chunkTypeString == "tRNS"))
{
if (!(chunkTypeString == "IDAT"))
{
return;
}
var dataChunk = new DataChunk();
dataChunk.Decode(chunkBytes);
dataChunks.Add(dataChunk);
}
else
{
var transparencyChunk = new TransparencyChunk();
transparencyChunk.Decode(chunkBytes);
palette.AddAlphaToColors(transparencyChunk.PaletteTransparencies);
}
}
else
{
var paletteChunk = new PaletteChunk();
paletteChunk.Decode(chunkBytes);
palette = paletteChunk.Palette;
chunks.Add(paletteChunk);
}
}
else
{
var headerChunk = new HeaderChunk();
headerChunk.Decode(chunkBytes);
width = (int)headerChunk.Width;
height = (int)headerChunk.Height;
bitsPerSample = headerChunk.BitDepth;
colorType = headerChunk.ColorType;
chunks.Add(headerChunk);
}
}
