public static void Write(this IEncodingOutputStream @this, long value)
{
for (int n = 0; n < 8; n++)
{
Write(@this, (byte)value);
value >>= 8;
}
}
public static void Write(this IEncodingOutputStream @this, char symbol)
{
for (int n = 0; n < 2; n++)
{
Write(@this, (byte)symbol);
symbol >>= 8;
}
}
public static void Write(this IEncodingOutputStream @this, byte value)
{
for (int n = 0; n < 8; n++)
{
@this.WriteBit((value & 1) == 1 ? Bit.One : Bit.Zero);
value >>= 1;
}
}
public void Initialize(IPlatformService platform, EncodingToken encodingToken, IEncodingOutputStream stream)
{
Guard.IsNotNull(platform, nameof(platform));
Guard.IsNotNull(encodingToken, nameof(encodingToken));
Guard.IsNotNull(stream, nameof(stream));
this.platform = platform;
this.encodingToken = encodingToken;
this.stream = stream;
this.encoder = new HuffmanEncoder();
}
public long Encode(IEncodingInputStream inputStream, IEncodingOutputStream outputStream, EncodingToken encodingToken, CancellationToken cancellationToken, IProgressHandler progress)
{
Guard.IsNotNull(inputStream, nameof(inputStream));
Guard.IsNotNull(outputStream, nameof(outputStream));
Guard.IsNotNull(encodingToken, nameof(encodingToken));
CodingTable codingTable = encodingToken.CodingTable;
inputStream.Reset();
long sequenceLength = 0;
long progressValue = progress?.State.CastTo <CodingProgressState>()?.Value ?? 0;
while (inputStream.ReadSymbol(out byte symbol))
{
BitSequence codingSequence = codingTable[symbol];
for (int n = 0; n < codingSequence.Size; n++)
{
Bit bit = codingSequence[n];
sequenceLength++;
outputStream.WriteBit(bit);
}
// Throttling
if (++progressValue == ChunkSize)
{
cancellationToken.ThrowIfCancellationRequested();
progress?.Report(ChunkSize, inputStream.Path);
progressValue = 0;
}
}
if (progress != null)
{
CodingProgressState progressState = (CodingProgressState)progress.State ?? new CodingProgressState();
progress.State = progressState.WithValue(progressValue);
}
return(sequenceLength);
}
public static void Write(this IEncodingOutputStream @this, StreamKind value)
{
Write(@this, (byte)value);
}
void IStreamBuilder.Initialize(IPlatformService platform, EncodingToken encodingToken, IEncodingOutputStream stream)
{
Trace += "->Initialize;";
}
