public MemoryFilterProvider(IDecodeParameterResolver decodeParameterResolver, IPngPredictor pngPredictor, ILog log)
{
IFilter Ascii85Func() => new Ascii85Filter();
IFilter AsciiHexFunc() => new AsciiHexDecodeFilter();
IFilter FlateFunc() => new FlateFilter(decodeParameterResolver, pngPredictor, log);
IFilter RunLengthFunc() => new RunLengthFilter();
filterFactories = new Dictionary <CosName, Func <IFilter> >
{
{ CosName.ASCII85_DECODE, Ascii85Func },
{ CosName.ASCII85_DECODE_ABBREVIATION, Ascii85Func },
{ CosName.ASCII_HEX_DECODE, AsciiHexFunc },
{ CosName.ASCII_HEX_DECODE_ABBREVIATION, AsciiHexFunc },
{ CosName.FLATE_DECODE, FlateFunc },
{ CosName.FLATE_DECODE_ABBREVIATION, FlateFunc },
{ CosName.RUN_LENGTH_DECODE, RunLengthFunc },
{ CosName.RUN_LENGTH_DECODE_ABBREVIATION, RunLengthFunc }
};
}
public MemoryFilterProvider(IDecodeParameterResolver decodeParameterResolver, IPngPredictor pngPredictor, ILog log)
{
var ascii85 = new Ascii85Filter();
var asciiHex = new AsciiHexDecodeFilter();
var flate = new FlateFilter(decodeParameterResolver, pngPredictor, log);
var runLength = new RunLengthFilter();
var lzw = new LzwFilter(decodeParameterResolver, pngPredictor);
filterInstances = new Dictionary <string, IFilter>
{
{ NameToken.Ascii85Decode.Data, ascii85 },
{ NameToken.Ascii85DecodeAbbreviation.Data, ascii85 },
{ NameToken.AsciiHexDecode.Data, asciiHex },
{ NameToken.AsciiHexDecodeAbbreviation.Data, asciiHex },
{ NameToken.FlateDecode.Data, flate },
{ NameToken.FlateDecodeAbbreviation.Data, flate },
{ NameToken.RunLengthDecode.Data, runLength },
{ NameToken.RunLengthDecodeAbbreviation.Data, runLength },
{ NameToken.LzwDecode, lzw },
{ NameToken.LzwDecodeAbbreviation, lzw }
};
}
public LzwFilter(IDecodeParameterResolver decodeParameterResolver, IPngPredictor pngPredictor)
{
this.decodeParameterResolver = decodeParameterResolver ?? throw new ArgumentNullException(nameof(decodeParameterResolver));
this.pngPredictor = pngPredictor ?? throw new ArgumentNullException(nameof(pngPredictor));
}
public MemoryFilterProvider(IDecodeParameterResolver decodeParameterResolver, IPngPredictor pngPredictor, ILog log)
{
IFilter Ascii85Func() => new Ascii85Filter();
IFilter AsciiHexFunc() => new AsciiHexDecodeFilter();
IFilter FlateFunc() => new FlateFilter(decodeParameterResolver, pngPredictor, log);
IFilter RunLengthFunc() => new RunLengthFilter();
IFilter LzwFunc() => new LzwFilter(decodeParameterResolver, pngPredictor);
filterFactories = new Dictionary <string, Func <IFilter> >
{
{ NameToken.Ascii85Decode.Data, Ascii85Func },
{ NameToken.Ascii85DecodeAbbreviation.Data, Ascii85Func },
{ NameToken.AsciiHexDecode.Data, AsciiHexFunc },
{ NameToken.AsciiHexDecodeAbbreviation.Data, AsciiHexFunc },
{ NameToken.FlateDecode.Data, FlateFunc },
{ NameToken.FlateDecodeAbbreviation.Data, FlateFunc },
{ NameToken.RunLengthDecode.Data, RunLengthFunc },
{ NameToken.RunLengthDecodeAbbreviation.Data, RunLengthFunc },
{ NameToken.LzwDecode, LzwFunc },
{ NameToken.LzwDecodeAbbreviation, LzwFunc }
};
}
public FlateFilter(IDecodeParameterResolver decodeParameterResolver, IPngPredictor pngPredictor, ILog log)
{
this.decodeParameterResolver = decodeParameterResolver;
this.pngPredictor = pngPredictor;
this.log = log;
}