internal override void WriteData(FlacBitStreamWriter writer, int bitsPerSample, int[] data)
{
for (int i = 0; i < data.Length; i++)
{
writer.WriteSigned(data[i], bitsPerSample);
}
}
internal override void WriteHeaderData(FlacBitStreamWriter writer, int bitsPerSample, int[] data)
{
// samples
for (int i = 0; i < Order; i++)
{
writer.WriteSigned(data[i], bitsPerSample);
}
}
internal override void WriteData(FlacBitStreamWriter writer, int bitsPerSample, int[] data)
{
WriteHeaderData(writer, bitsPerSample, data);
IPredictor predictor = CreatePredictor(ArrayUtils.CutArray(data, 0, Order - 1));
residual.WriteResidual(writer, predictor, Order, data);
}
internal override void WriteHeaderData(FlacBitStreamWriter writer, int bitsPerSample, int[] data)
{
// samples
for (int i = 0; i < Order; i++)
{
writer.WriteSigned(data[i], bitsPerSample);
}
}
internal void WriteResidual(FlacBitStreamWriter writer, IPredictor predictor, int predictorOrder, int[] samples)
{
int totalPartitions = 1 << Order;
System.Diagnostics.Debug.Assert((samples.Length % totalPartitions) == 0 &&
(samples.Length / totalPartitions) > predictorOrder && RiceParameters.Length == totalPartitions);
if (!IsExtended)
{
writer.WriteUnsigned(0, 2);
}
else
{
writer.WriteUnsigned(1, 2);
}
writer.WriteUnsigned((uint)Order, 4);
int j = predictorOrder;
int samplePerPartition = samples.Length / totalPartitions;
int encodingParameterPrecision = IsExtended ? 5 : 4;
IEnumerator <int> residualData = GetResidual(samples, predictorOrder, predictor);
for (int i = 0; i < totalPartitions; i++)
{
if (RiceParameters[i] >= 0)
{
int riceParameter = RiceParameters[i];
writer.WriteUnsigned((uint)riceParameter, encodingParameterPrecision);
while (j++ < samplePerPartition)
{
if (!residualData.MoveNext())
{
throw new FlacException("Invalid amount of residual data");
}
writer.WriteRice(residualData.Current, riceParameter);
}
}
else // escaped
{
writer.WriteUnsigned(~0U, encodingParameterPrecision);
int samplePrecision = ~RiceParameters[i];
writer.WriteUnsigned((uint)samplePrecision, 5);
while (j++ < samplePerPartition)
{
if (!residualData.MoveNext())
{
throw new FlacException("Invalid amount of residual data");
}
writer.WriteSigned(residualData.Current, samplePrecision);
}
}
j = 0;
}
}
private void WriteSubframe(FlacBitStreamWriter bitWriter, FlacMethodAndDataPair flacMethodAndDataPair)
{
bitWriter.WriteUnsigned(0, 1);
int subframeType = flacMethodAndDataPair.Method.SubframeTypeCode;
bitWriter.WriteUnsigned((uint)subframeType, 6);
bitWriter.WriteUnsigned(0, 1);
flacMethodAndDataPair.WriteData(bitWriter);
}
internal void WriteResidual(FlacBitStreamWriter writer, IPredictor predictor, int predictorOrder, int[] samples)
{
int totalPartitions = 1 << Order;
System.Diagnostics.Debug.Assert((samples.Length % totalPartitions) == 0
&& (samples.Length / totalPartitions) > predictorOrder && RiceParameters.Length == totalPartitions);
if (!IsExtended)
writer.WriteUnsigned(0, 2);
else
writer.WriteUnsigned(1, 2);
writer.WriteUnsigned((uint)Order, 4);
int j = predictorOrder;
int samplePerPartition = samples.Length / totalPartitions;
int encodingParameterPrecision = IsExtended ? 5 : 4;
IEnumerator<int> residualData = GetResidual(samples, predictorOrder, predictor);
for (int i = 0; i < totalPartitions; i++)
{
if (RiceParameters[i] >= 0)
{
int riceParameter = RiceParameters[i];
writer.WriteUnsigned((uint)riceParameter, encodingParameterPrecision);
while (j++ < samplePerPartition)
{
if (!residualData.MoveNext())
throw new FlacException("Invalid amount of residual data");
writer.WriteRice(residualData.Current, riceParameter);
}
}
else // escaped
{
writer.WriteUnsigned(~0U, encodingParameterPrecision);
int samplePrecision = ~RiceParameters[i];
writer.WriteUnsigned((uint)samplePrecision, 5);
while(j++ < samplePerPartition)
{
if (!residualData.MoveNext())
throw new FlacException("Invalid amount of residual data");
writer.WriteSigned(residualData.Current, samplePrecision);
}
}
j = 0;
}
}
internal override void WriteHeaderData(FlacBitStreamWriter writer, int bitsPerSample, int[] data)
{
System.Diagnostics.Debug.Assert(0 < Coefficients.CoefficientsPrecision &&
Coefficients.CoefficientsPrecision < 16);
// samples
for (int i = 0; i < Order; i++)
{
writer.WriteSigned(data[i], bitsPerSample);
}
writer.WriteUnsigned((uint)(Coefficients.CoefficientsPrecision - 1), 4);
writer.WriteSigned(Coefficients.ResultShift, 5);
for (int i = 0; i < Order; i++)
{
writer.WriteSigned(Coefficients.Coefficients[i], Coefficients.CoefficientsPrecision);
}
}
internal void WriteData(FlacBitStreamWriter bitWriter)
{
Method.WriteData(bitWriter, BitsPerSample, Data);
}
public void WriteFrame(FlacMethodAndDataPair[] methods, SoundChannelAssignmentType channelAssignment)
{
EnsureFramesMode();
sink.StartFrame(streamPosition, currentSample);
if (methods == null)
{
throw new ArgumentNullException("methods");
}
if (methods.Length != Streaminfo.ChannelsCount)
{
throw new ArgumentNullException("Methods items does not correspond to amount of channels");
}
int samplesCount = methods[0].Data.Length;
const byte Blocking = 0x00; // fixed
MemoryStream frameHeader = new MemoryStream();
// sync code + reserved = 0 + blocking
frameHeader.WriteByte(0xFF); frameHeader.WriteByte(0xF8 | Blocking);
int interChannelSamplesTypeIndex = Array.IndexOf(FlacCommons.StaticBlockSizeSamples, samplesCount);
int interChannelSamplesType;
if (interChannelSamplesTypeIndex > 0)
{
interChannelSamplesType = interChannelSamplesTypeIndex;
}
else if (samplesCount > 256)
{
interChannelSamplesType = FlacCommons.Bit16BlockSizeSamplesType;
}
else
{
interChannelSamplesType = FlacCommons.Bit8BlockSizeSamplesType;
}
int sampleRateTypeIndex = Array.IndexOf(FlacCommons.StaticSampleRates, Streaminfo.SampleRate);
int sampleRateType = sampleRateTypeIndex > 0
? sampleRateTypeIndex : FlacCommons.StreaminfoSampleRateType;
frameHeader.WriteByte((byte)(interChannelSamplesType << 4 | sampleRateType));
int channelAssignmetType = (int)channelAssignment;
int sampleSizeInBitsTypeIndex = Array.IndexOf(FlacCommons.StaticSampleSizeInBits, Streaminfo.BitsPerSample);
int sampleSizeInBitsType = sampleSizeInBitsTypeIndex > 0
? sampleSizeInBitsTypeIndex : FlacCommons.StreaminfoSizeInBitsType;
frameHeader.WriteByte((byte)(channelAssignmetType << 4 | sampleSizeInBitsType << 1));
WriteUtf8Number(frameHeader, frameNumber);
switch (interChannelSamplesType)
{
case FlacCommons.Bit8BlockSizeSamplesType:
frameHeader.WriteByte((byte)(samplesCount - 1)); break;
case FlacCommons.Bit16BlockSizeSamplesType:
frameHeader.WriteByte((byte)((samplesCount - 1) >> 8));
frameHeader.WriteByte((byte)(samplesCount - 1));
break;
}
frameHeader.Dispose();
byte[] frameHeaderData = frameHeader.ToArray();
byte crc8 = CrcUtils.Crc8(0, frameHeaderData);
BaseStream.Write(frameHeaderData, 0, frameHeaderData.Length);
BaseStream.WriteByte(crc8);
++frameNumber;
ushort crc16Seed = CrcUtils.Crc16(CrcUtils.Crc16(0, frameHeaderData), crc8);
// write channels
FlacBitStreamWriter bitWriter = new FlacBitStreamWriter(BaseStream, crc16Seed);
for (int i = 0; i < methods.Length; i++)
{
WriteSubframe(bitWriter, methods[i]);
}
int subframesLength;
ushort crc16;
bitWriter.Complete(out crc16, out subframesLength);
// write footer
BaseStream.WriteByte((byte)(crc16 >> 8)); BaseStream.WriteByte((byte)crc16);
int frameSize = frameHeaderData.Length + 1 + subframesLength + 2;
streamPosition += frameSize;
currentSample += samplesCount;
sink.EndFrame(streamPosition, currentSample);
}
private void WriteSubframe(FlacBitStreamWriter bitWriter, FlacMethodAndDataPair flacMethodAndDataPair)
{
bitWriter.WriteUnsigned(0, 1);
int subframeType = flacMethodAndDataPair.Method.SubframeTypeCode;
bitWriter.WriteUnsigned((uint)subframeType, 6);
bitWriter.WriteUnsigned(0, 1);
flacMethodAndDataPair.WriteData(bitWriter);
}
public void WriteFrame(FlacMethodAndDataPair[] methods, SoundChannelAssignmentType channelAssignment)
{
EnsureFramesMode();
sink.StartFrame(streamPosition, currentSample);
if (methods == null) throw new ArgumentNullException("methods");
if(methods.Length != Streaminfo.ChannelsCount)
throw new ArgumentNullException("Methods items does not correspond to amount of channels");
int samplesCount = methods[0].Data.Length;
const byte Blocking = 0x00; // fixed
MemoryStream frameHeader = new MemoryStream();
// sync code + reserved = 0 + blocking
frameHeader.WriteByte(0xFF); frameHeader.WriteByte(0xF8 | Blocking);
int interChannelSamplesTypeIndex = Array.IndexOf(FlacCommons.StaticBlockSizeSamples, samplesCount);
int interChannelSamplesType;
if (interChannelSamplesTypeIndex > 0)
interChannelSamplesType = interChannelSamplesTypeIndex;
else if (samplesCount > 256)
interChannelSamplesType = FlacCommons.Bit16BlockSizeSamplesType;
else
interChannelSamplesType = FlacCommons.Bit8BlockSizeSamplesType;
int sampleRateTypeIndex = Array.IndexOf(FlacCommons.StaticSampleRates, Streaminfo.SampleRate);
int sampleRateType = sampleRateTypeIndex > 0
? sampleRateTypeIndex : FlacCommons.StreaminfoSampleRateType;
frameHeader.WriteByte((byte)(interChannelSamplesType << 4 | sampleRateType));
int channelAssignmetType = (int)channelAssignment;
int sampleSizeInBitsTypeIndex = Array.IndexOf(FlacCommons.StaticSampleSizeInBits, Streaminfo.BitsPerSample);
int sampleSizeInBitsType = sampleSizeInBitsTypeIndex > 0
? sampleSizeInBitsTypeIndex : FlacCommons.StreaminfoSizeInBitsType;
frameHeader.WriteByte((byte)(channelAssignmetType << 4 | sampleSizeInBitsType << 1));
WriteUtf8Number(frameHeader, frameNumber);
switch (interChannelSamplesType)
{
case FlacCommons.Bit8BlockSizeSamplesType:
frameHeader.WriteByte((byte)(samplesCount - 1)); break;
case FlacCommons.Bit16BlockSizeSamplesType:
frameHeader.WriteByte((byte)((samplesCount - 1) >> 8));
frameHeader.WriteByte((byte)(samplesCount - 1));
break;
}
frameHeader.Close();
byte[] frameHeaderData = frameHeader.ToArray();
byte crc8 = CrcUtils.Crc8(0, frameHeaderData);
BaseStream.Write(frameHeaderData, 0, frameHeaderData.Length);
BaseStream.WriteByte(crc8);
++frameNumber;
ushort crc16Seed = CrcUtils.Crc16(CrcUtils.Crc16(0, frameHeaderData), crc8);
// write channels
FlacBitStreamWriter bitWriter = new FlacBitStreamWriter(BaseStream, crc16Seed);
for (int i = 0; i < methods.Length; i++)
{
WriteSubframe(bitWriter, methods[i]);
}
int subframesLength;
ushort crc16;
bitWriter.Complete(out crc16, out subframesLength);
// write footer
BaseStream.WriteByte((byte)(crc16 >> 8)); BaseStream.WriteByte((byte)crc16);
int frameSize = frameHeaderData.Length + 1 + subframesLength + 2;
streamPosition += frameSize;
currentSample += samplesCount;
sink.EndFrame(streamPosition, currentSample);
}
internal override void WriteData(FlacBitStreamWriter writer, int bitsPerSample, int[] data)
{
writer.WriteSigned(data[0], bitsPerSample);
}
internal abstract void WriteHeaderData(FlacBitStreamWriter writer, int bitsPerSample, int[] data);
internal override void WriteData(FlacBitStreamWriter writer, int bitsPerSample, int[] data)
{
WriteHeaderData(writer, bitsPerSample, data);
IPredictor predictor = CreatePredictor(ArrayUtils.CutArray(data, 0, Order - 1));
residual.WriteResidual(writer, predictor, Order, data);
}
internal override void WriteHeaderData(FlacBitStreamWriter writer, int bitsPerSample, int[] data)
{
System.Diagnostics.Debug.Assert(0 < Coefficients.CoefficientsPrecision &&
Coefficients.CoefficientsPrecision < 16);
// samples
for (int i = 0; i < Order; i++)
{
writer.WriteSigned(data[i], bitsPerSample);
}
writer.WriteUnsigned((uint)(Coefficients.CoefficientsPrecision - 1), 4);
writer.WriteSigned(Coefficients.ResultShift, 5);
for (int i = 0; i < Order; i++)
{
writer.WriteSigned(Coefficients.Coefficients[i], Coefficients.CoefficientsPrecision);
}
}
internal override void WriteData(FlacBitStreamWriter writer, int bitsPerSample, int[] data)
{
writer.WriteSigned(data[0], bitsPerSample);
}
internal void WriteData(FlacBitStreamWriter bitWriter)
{
Method.WriteData(bitWriter, BitsPerSample, Data);
}
internal abstract void WriteHeaderData(FlacBitStreamWriter writer, int bitsPerSample, int[] data);
internal override void WriteData(FlacBitStreamWriter writer, int bitsPerSample, int[] data)
{
for (int i = 0; i < data.Length; i++)
{
writer.WriteSigned(data[i], bitsPerSample);
}
}