internal static GifPlainTextExtension ReadPlainText(Stream stream, IEnumerable <GifExtension> controlExtensions, bool metadataOnly) { var plainText = new GifPlainTextExtension(); plainText.Read(stream, controlExtensions, metadataOnly); return(plainText); }
internal static GifExtension ReadExtension(Stream stream, IEnumerable <GifExtension> controlExtensions, bool metadataOnly) { // Note: at this point, the Extension Introducer (0x21) has already been read var label = stream.ReadByte(); if (label < 0) { throw GifHelpers.UnexpectedEndOfStreamException(); } return(label switch { GifGraphicControlExtension.ExtensionLabel => (GifExtension)GifGraphicControlExtension.ReadGraphicsControl(stream), GifCommentExtension.ExtensionLabel => GifCommentExtension.ReadComment(stream), GifPlainTextExtension.ExtensionLabel => GifPlainTextExtension.ReadPlainText(stream, controlExtensions, metadataOnly), GifApplicationExtension.ExtensionLabel => GifApplicationExtension.ReadApplication(stream), _ => throw GifHelpers.UnknownExtensionTypeException(label) });