com.groovemanager.spi.floatEncoding
Class FloatConversionProvider

java.lang.Object
  javax.sound.sampled.spi.FormatConversionProvider
      com.groovemanager.spi.floatEncoding.FloatConversionProvider

public class FloatConversionProvider

extends javax.sound.sampled.spi.FormatConversionProvider

A FloatConversionProvider is an implementation of the FormatConversionProvider SPI. It provides conversion from and to PCM_SIGNED or PCM_FLOAT encoded data, where PCM_FLOAT stands for floating point samples normalized to +/- 1.0 either in 32 or 64 Bit.

Author:

Manu Robledo

Field Summary

private static javax.sound.sampled.AudioFormat.Encoding[]

encodings The encodings supported by this provider

Constructor Summary

FloatConversionProvider()
Constructs a new FloatConversionProvider

Method Summary

javax.sound.sampled.AudioInputStream	getAudioInputStream(javax.sound.sampled.AudioFormat.Encoding targetEncoding, javax.sound.sampled.AudioInputStream sourceStream)
javax.sound.sampled.AudioInputStream	getAudioInputStream(javax.sound.sampled.AudioFormat targetFormat, javax.sound.sampled.AudioInputStream sourceStream)
private static javax.sound.sampled.AudioFormat	getDefaultConversionFormat(javax.sound.sampled.AudioFormat sourceFormat, javax.sound.sampled.AudioFormat.Encoding targetEncoding) If only the target encoding is given, but not the target format, get a default target format out of the source format and the target encoding
private int	getFormatLength() Get the number of possible formats
javax.sound.sampled.AudioFormat.Encoding[]	getSourceEncodings()
javax.sound.sampled.AudioFormat.Encoding[]	getTargetEncodings()
javax.sound.sampled.AudioFormat.Encoding[]	getTargetEncodings(javax.sound.sampled.AudioFormat sourceFormat)
javax.sound.sampled.AudioFormat[]	getTargetFormats(javax.sound.sampled.AudioFormat.Encoding targetEncoding, javax.sound.sampled.AudioFormat sourceFormat)
private boolean	isSourceFormatSupported(javax.sound.sampled.AudioFormat sourceFormat) Find out, if the given format is supported by this provider
private boolean	isSupportedPCMFormat(javax.sound.sampled.AudioFormat format) Find out, if the given format is a valid PCM encoded format that is being supported by this provider

Methods inherited from class javax.sound.sampled.spi.FormatConversionProvider

isConversionSupported, isConversionSupported, isSourceEncodingSupported, isTargetEncodingSupported

Methods inherited from class java.lang.Object

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

Field Detail

encodings

private static final javax.sound.sampled.AudioFormat.Encoding[] encodings

The encodings supported by this provider

Constructor Detail

FloatConversionProvider

public FloatConversionProvider()

Constructs a new FloatConversionProvider

Method Detail

getAudioInputStream

public javax.sound.sampled.AudioInputStream getAudioInputStream(javax.sound.sampled.AudioFormat.Encoding targetEncoding,
                                                                javax.sound.sampled.AudioInputStream sourceStream)

Specified by:

getAudioInputStream in class javax.sound.sampled.spi.FormatConversionProvider

See Also:

FormatConversionProvider.getAudioInputStream(javax.sound.sampled.AudioFormat.Encoding, javax.sound.sampled.AudioInputStream)

getAudioInputStream

public javax.sound.sampled.AudioInputStream getAudioInputStream(javax.sound.sampled.AudioFormat targetFormat,
                                                                javax.sound.sampled.AudioInputStream sourceStream)

Specified by:

getAudioInputStream in class javax.sound.sampled.spi.FormatConversionProvider

See Also:

FormatConversionProvider.getAudioInputStream(javax.sound.sampled.AudioFormat, javax.sound.sampled.AudioInputStream)

getDefaultConversionFormat

private static javax.sound.sampled.AudioFormat getDefaultConversionFormat(javax.sound.sampled.AudioFormat sourceFormat,
                                                                          javax.sound.sampled.AudioFormat.Encoding targetEncoding)

If only the target encoding is given, but not the target format, get a default target format out of the source format and the target encoding

Parameters:

sourceFormat - The source AudioFormat

targetEncoding - The target encoding

Returns:

An AudioFormat with the targetEncoding and similar attributes to the sourceFormat

getFormatLength

private int getFormatLength()

Get the number of possible formats

Returns:

Always 12 (2 PCM_FLOAT + 4 PCM_SIGNED) * 2 (endianess)

getSourceEncodings

public javax.sound.sampled.AudioFormat.Encoding[] getSourceEncodings()

Specified by:

getSourceEncodings in class javax.sound.sampled.spi.FormatConversionProvider

See Also:

FormatConversionProvider.getSourceEncodings()

getTargetEncodings

public javax.sound.sampled.AudioFormat.Encoding[] getTargetEncodings()

Specified by:

getTargetEncodings in class javax.sound.sampled.spi.FormatConversionProvider

See Also:

FormatConversionProvider.getTargetEncodings()

getTargetEncodings

public javax.sound.sampled.AudioFormat.Encoding[] getTargetEncodings(javax.sound.sampled.AudioFormat sourceFormat)

Specified by:

getTargetEncodings in class javax.sound.sampled.spi.FormatConversionProvider

See Also:

FormatConversionProvider.getTargetEncodings(javax.sound.sampled.AudioFormat)

getTargetFormats

public javax.sound.sampled.AudioFormat[] getTargetFormats(javax.sound.sampled.AudioFormat.Encoding targetEncoding,
                                                          javax.sound.sampled.AudioFormat sourceFormat)

Specified by:

getTargetFormats in class javax.sound.sampled.spi.FormatConversionProvider

See Also:

FormatConversionProvider.getTargetFormats(javax.sound.sampled.AudioFormat.Encoding, javax.sound.sampled.AudioFormat)

isSourceFormatSupported

private boolean isSourceFormatSupported(javax.sound.sampled.AudioFormat sourceFormat)

Find out, if the given format is supported by this provider

Parameters:

sourceFormat - The format to check for

Returns:

true, if the given format is supported, false otherwise

isSupportedPCMFormat

private boolean isSupportedPCMFormat(javax.sound.sampled.AudioFormat format)

Find out, if the given format is a valid PCM encoded format that is being supported by this provider

Parameters:

format - The AudioFormat to ask for

Returns:

true, if
- the sample rate is the same as the frame rate,
- the sample size in Bits is dividable by 8,
- the frame size is the sample size multiplied by the number of channels divided by 8.
false otherwise