private void Read(Stream stream)
{
this.Signature = GifHelpers.ReadString(stream, 3);
if (this.Signature != "GIF")
{
throw GifHelpers.InvalidSignatureException(this.Signature);
}
this.Version = GifHelpers.ReadString(stream, 3);
if ((this.Version != "87a") && (this.Version != "89a"))
{
throw GifHelpers.UnsupportedVersionException(this.Version);
}
this.LogicalScreenDescriptor = GifLogicalScreenDescriptor.ReadLogicalScreenDescriptor(stream);
}
private void Read(Stream stream)
{
if (stream == null)
{
return;
}
Signature = GifHelpers.ReadString(stream, 3);
if (Signature != "GIF")
{
throw GifHelpers.InvalidSignatureException(Signature);
}
Version = GifHelpers.ReadString(stream, 3);
if (Version != "87a" && Version != "89a")
{
throw GifHelpers.UnsupportedVersionException(Version);
}
LogicalScreenDescriptor = GifLogicalScreenDescriptor.ReadLogicalScreenDescriptor(stream);
}
