public static void EmitIco(string outputPath, ParseContext context)
{
var writer = new ByteWriter(ByteOrder.LittleEndian);
writer.AddUint16(FileFormatConstants._iconMagicHeader);
writer.AddUint16(FileFormatConstants._iconMagicType);
writer.AddUint16((ushort)context.GeneratedFrames.Count);
var offsets = new Queue <uint>();
foreach (var frame in context.GeneratedFrames)
{
var width = frame.Encoding.ClaimedWidth;
var height = frame.Encoding.ClaimedHeight;
var bitDepth = frame.Encoding.ClaimedBitDepth;
writer.AddUint8((byte)(width >= 256 ? 0 : width)); // bWidth
writer.AddUint8((byte)(height >= 256 ? 0 : height)); // bHeight
writer.AddUint8((byte)(bitDepth < 8 ? 1u << (int)bitDepth : 0)); // bColorCount
writer.AddUint8(0); // bReserved
writer.AddUint16(1); // wPlanes
writer.AddUint16((ushort)bitDepth); // wBitCount
writer.AddUint32((uint)frame.RawData.Length); // dwBytesInRes
offsets.Enqueue((uint)writer.SeekOffset);
writer.AddUint32(0); // dwImageOffset (will fix later)
}
foreach (var frame in context.GeneratedFrames)
{
var currentOffset = writer.SeekOffset;
writer.SeekOffset = (int)offsets.Dequeue();
writer.AddUint32((uint)currentOffset); // dwImageOffset
writer.SeekOffset = currentOffset;
writer.AddBlob(frame.RawData);
frame.TotalDiskUsage = (uint)frame.RawData.Length + /* sizeof(ICONDIRENTRY) */ 16;
}
File.WriteAllBytes(outputPath, writer.Data.ToArray());
}