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