예제 #1
0
        internal static GifBlock ReadBlock(Stream stream, IEnumerable <GifExtension> controlExtensions, bool metadataOnly)
        {
            int blockId = stream.ReadByte();

            if (blockId < 0)
            {
                throw GifHelpers.UnexpectedEndOfStreamException();
            }
            switch (blockId)
            {
            case GifExtension.ExtensionIntroducer:
                return(GifExtension.ReadExtension(stream, controlExtensions, metadataOnly));

            case GifFrame.ImageSeparator:
                return(GifFrame.ReadFrame(stream, controlExtensions, metadataOnly));

            case GifTrailer.TrailerByte:
                return(GifTrailer.ReadTrailer());

            default:
                throw GifHelpers.UnknownBlockTypeException(blockId);
            }
        }
예제 #2
0
        internal static GifBlock ReadBlock(Stream stream, IEnumerable <GifExtension> controlExtensions, bool metadataOnly)
        {
            int blockId = stream.ReadByte();

            if (blockId < 0)
            {
                throw GifHelpers.UnexpectedEndOfStreamException();
            }
            int num2 = blockId;

            if (num2 == 0x21)
            {
                return(GifExtension.ReadExtension(stream, controlExtensions, metadataOnly));
            }
            if (num2 == 0x2c)
            {
                return(GifFrame.ReadFrame(stream, controlExtensions, metadataOnly));
            }
            if (num2 != 0x3b)
            {
                throw GifHelpers.UnknownBlockTypeException(blockId);
            }
            return(GifTrailer.ReadTrailer());
        }