org.tritonus.sampled.convert
Class SampleRateConversionProvider.SampleRateConverterStream

java.lang.Object
  java.io.InputStream
      javax.sound.sampled.AudioInputStream
          org.tritonus.sampled.convert.SampleRateConversionProvider.SampleRateConverterStream

All Implemented Interfaces:

java.io.Closeable, FloatSampleInput

Enclosing class:

SampleRateConversionProvider

public static class SampleRateConversionProvider.SampleRateConverterStream
extends AudioInputStream
implements FloatSampleInput

SampleRateConverterStream

Field Summary

static int	LINEAR_INTERPOLATION Conversion algorithm
static int	RESAMPLE Conversion algorithm
static int	SAMPLE_AND_HOLD Conversion algorithm

Constructor Summary

SampleRateConversionProvider.SampleRateConverterStream(AudioInputStream sourceStream, AudioFormat targetFormat)

SampleRateConversionProvider.SampleRateConverterStream(FloatSampleInput sourceInput, AudioFormat targetFormat, long frameLength)

Method Summary

int	available()
void	close()
void	flush() Flushes the internal buffers
int	getChannels()
int	getConversionAlgorithm()
int	getFrameSize()
float	getSampleRate()
int	getSourceFrameSize()
float	getTargetSampleRate()
boolean	isClosed()
boolean	isDone() Determine if this stream has reached its end.
void	mark(int readlimit)
boolean	markSupported()
int	read()
int	read(byte[] abData)
int	read(byte[] abData, int nOffset, int nLength) Read nLength bytes that will be the converted samples of the original inputStream.
void	read(FloatSampleBuffer outBuffer) Fill the entire buffer with audio data.
void	read(FloatSampleBuffer outBuffer, int offset, int count) Main read method.
void	reset()
void	setConversionAlgorithm(int algo)
void	setTargetSampleRate(float sr)
long	skip(long nSkip)

Methods inherited from class javax.sound.sampled.AudioInputStream

getFormat, getFrameLength

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

SAMPLE_AND_HOLD

public static final int SAMPLE_AND_HOLD

Conversion algorithm

See Also:

Constant Field Values

LINEAR_INTERPOLATION

public static final int LINEAR_INTERPOLATION

Conversion algorithm

See Also:

Constant Field Values

RESAMPLE

public static final int RESAMPLE

Conversion algorithm

See Also:

Constant Field Values

Constructor Detail

SampleRateConversionProvider.SampleRateConverterStream

public SampleRateConversionProvider.SampleRateConverterStream(AudioInputStream sourceStream,
                                                              AudioFormat targetFormat)

SampleRateConversionProvider.SampleRateConverterStream

public SampleRateConversionProvider.SampleRateConverterStream(FloatSampleInput sourceInput,
                                                              AudioFormat targetFormat,
                                                              long frameLength)

Method Detail

getChannels

public int getChannels()

Specified by:

getChannels in interface FloatSampleInput

Returns:

the number of audio channels of the audio data that this stream provides. If it can support a variable number of channels, this method returns AudioSystem.NOT_SPECIFIED.

getSampleRate

public float getSampleRate()

Specified by:

getSampleRate in interface FloatSampleInput

Returns:

the sample rate of the audio data that this stream provides. If it can support different sample rates, this method returns a negative number, e.g. AudioSystem.NOT_SPECIFIED.

isDone

public boolean isDone()

Description copied from interface: FloatSampleInput

Determine if this stream has reached its end. If true, subsequent calls to read() will return 0-sized buffers.

Specified by:

isDone in interface FloatSampleInput

Returns:

true if this stream reached its end.

read

public void read(FloatSampleBuffer outBuffer)

Description copied from interface: FloatSampleInput

Fill the entire buffer with audio data. If fewer samples are read, this method will use buffer.changeSampleCount() to adjust the size of the buffer. If no samples can be written to the buffer, the buffer's sample count will be set to 0.

The buffer's channel count and sample rate may not be changed by the implementation of this method.

Specified by:

read in interface FloatSampleInput

Parameters:

outBuffer - the buffer to be filled

read

public void read(FloatSampleBuffer outBuffer,
                 int offset,
                 int count)

Main read method. It blocks until all samples are converted or the source stream is at its end or closed.
The sourceStream's sample rate is converted following the current setting of conversionAlgorithm. At most outBuffer.getSampleCount() are converted. In general, if outBuffer.getSampleCount()) is less after processing this function, then it is an indicator that it was the last block to be processed.

Specified by:

read in interface FloatSampleInput

Parameters:

outBuffer - the buffer that the converted samples will be written to.

offset - the start index, in samples, where to start filling the buffer

count - the number fo samples to fill into the buffer

Throws:

java.lang.IllegalArgumentException - when outBuffer's channel count does not match

See Also:

setConversionAlgorithm(int)

getFrameSize

public int getFrameSize()

getSourceFrameSize

public int getSourceFrameSize()

read

public int read()
         throws java.io.IOException

Overrides:

read in class AudioInputStream

Throws:

java.io.IOException

read

public int read(byte[] abData)
         throws java.io.IOException

Overrides:

read in class AudioInputStream

Throws:

java.io.IOException

See Also:

read(byte[], int, int)

read

public int read(byte[] abData,
                int nOffset,
                int nLength)
         throws java.io.IOException

Read nLength bytes that will be the converted samples of the original inputStream. When nLength is not an integral number of frames, this method may read less than nLength bytes.

Overrides:

read in class AudioInputStream

Throws:

java.io.IOException

skip

public long skip(long nSkip)
          throws java.io.IOException

Overrides:

skip in class AudioInputStream

Throws:

java.io.IOException

available

public int available()
              throws java.io.IOException

Overrides:

available in class AudioInputStream

Throws:

java.io.IOException

mark

public void mark(int readlimit)

Overrides:

mark in class AudioInputStream

reset

public void reset()
           throws java.io.IOException

Overrides:

reset in class AudioInputStream

Throws:

java.io.IOException

markSupported

public boolean markSupported()

Overrides:

markSupported in class AudioInputStream

close

public void close()

Specified by:

close in interface java.io.Closeable

Overrides:

close in class AudioInputStream

isClosed

public boolean isClosed()

flush

public void flush()

Flushes the internal buffers

setTargetSampleRate

public void setTargetSampleRate(float sr)

setConversionAlgorithm

public void setConversionAlgorithm(int algo)

getTargetSampleRate

public float getTargetSampleRate()

getConversionAlgorithm

public int getConversionAlgorithm()