private void Read(Stream stream)
{
byte[] numArray1 = new byte[12];
stream.ReadAll(numArray1, 0, numArray1.Length);
this.BlockSize = (int)numArray1[0];
if (this.BlockSize != 11)
{
throw GifHelpers.InvalidBlockSizeException("Application Extension", 11, this.BlockSize);
}
this.ApplicationIdentifier = Encoding.ASCII.GetString(numArray1, 1, 8);
byte[] numArray2 = new byte[3];
Array.Copy((Array)numArray1, 9, (Array)numArray2, 0, 3);
this.AuthenticationCode = numArray2;
this.Data = GifHelpers.ReadDataBlocks(stream, false);
}
private void Read(Stream stream)
{
byte[] buffer = new byte[6];
stream.ReadAll(buffer, 0, buffer.Length);
this.BlockSize = (int)buffer[0];
if (this.BlockSize != 4)
{
throw GifHelpers.InvalidBlockSizeException("Graphic Control Extension", 4, this.BlockSize);
}
byte num = buffer[1];
this.DisposalMethod = ((int)num & 28) >> 2;
this.UserInput = ((uint)num & 2U) > 0U;
this.HasTransparency = ((uint)num & 1U) > 0U;
this.Delay = (int)BitConverter.ToUInt16(buffer, 2) * 10;
this.TransparencyIndex = (int)buffer[4];
}
private void Read(
Stream stream,
IEnumerable <GifExtension> controlExtensions,
bool metadataOnly)
{
byte[] buffer = new byte[13];
stream.ReadAll(buffer, 0, buffer.Length);
this.BlockSize = (int)buffer[0];
if (this.BlockSize != 12)
{
throw GifHelpers.InvalidBlockSizeException("Plain Text Extension", 12, this.BlockSize);
}
this.Left = (int)BitConverter.ToUInt16(buffer, 1);
this.Top = (int)BitConverter.ToUInt16(buffer, 3);
this.Width = (int)BitConverter.ToUInt16(buffer, 5);
this.Height = (int)BitConverter.ToUInt16(buffer, 7);
this.CellWidth = (int)buffer[9];
this.CellHeight = (int)buffer[10];
this.ForegroundColorIndex = (int)buffer[11];
this.BackgroundColorIndex = (int)buffer[12];
this.Text = Encoding.ASCII.GetString(GifHelpers.ReadDataBlocks(stream, metadataOnly));
this.Extensions = (IList <GifExtension>)controlExtensions.ToList <GifExtension>().AsReadOnly();
}