entagged.audioformats.asf.data
Class AudioStreamChunk

java.lang.Object
  entagged.audioformats.asf.data.Chunk
      entagged.audioformats.asf.data.StreamChunk
          entagged.audioformats.asf.data.AudioStreamChunk

public class AudioStreamChunk
extends StreamChunk

This class represents the streamchunk describing an audio stream.

Author:

Christian Laireiter

Field Summary

static String[][]

CODEC_DESCRIPTIONS Stores the hex values of codec identifiers to their descriptions.

Fields inherited from class entagged.audioformats.asf.data.Chunk

chunkLength, guid, position

Constructor Summary

AudioStreamChunk(long pos, BigInteger chunkLen)
Creates an instance.

Method Summary

long	getAverageBytesPerSec()
int	getBitsPerSample()
long	getBlockAlignment()
long	getChannelCount()
byte[]	getCodecData()
String	getCodecDescription() This method will take a look at compressionFormatand returns a String with its hex value and if known a textual note on what coded it represents.
long	getCompressionFormat()
GUID	getErrorConcealment()
int	getKbps() This method takes the value of getAverageBytesPerSec()and calculates the kbps out of it, by simply multiplying by 8 and dividing by 1000.
long	getSamplingRate()
boolean	isErrorConcealed() This mehtod returns whether the audio stream data is error concealed.
String	prettyPrint() (overridden)
void	setAverageBytesPerSec(long avgeBytesPerSec)
void	setBitsPerSample(int bps) Sets the bitsPerSample
void	setBlockAlignment(long align) Sets the blockAlignment.
void	setChannelCount(long channels)
void	setCodecData(byte[] codecSpecificData) Sets the codecData
void	setCompressionFormat(long cFormatCode)
void	setErrorConcealment(GUID errConc) This method sets the error concealment type which is given by two GUIDs.
void	setSamplingRate(long sampRate)

Methods inherited from class entagged.audioformats.asf.data.StreamChunk

getStreamNumber, getStreamSpecificDataSize, getTimeOffset, getTypeSpecificDataSize, isContentEncrypted, setContentEncrypted, setStreamNumber, setStreamSpecificDataSize, setTimeOffset, setTypeSpecificDataSize

Methods inherited from class entagged.audioformats.asf.data.Chunk

getChunckEnd, getChunkLength, getGuid, getPosition, toString

Methods inherited from class java.lang.Object

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

Field Detail

CODEC_DESCRIPTIONS

public static final String[][] CODEC_DESCRIPTIONS

Stores the hex values of codec identifiers to their descriptions.

Constructor Detail

AudioStreamChunk

public AudioStreamChunk(long pos,
                        BigInteger chunkLen)

Creates an instance.

Parameters:

pos - Position of current chunk within asf file or stream.

chunkLen - Length of the entire chunk (including guid and size)

Method Detail

getAverageBytesPerSec

public long getAverageBytesPerSec()

Returns:

Returns the averageBytesPerSec.

getBitsPerSample

public int getBitsPerSample()

Returns:

Returns the bitsPerSample.

getBlockAlignment

public long getBlockAlignment()

Returns:

Returns the blockAlignment.

getChannelCount

public long getChannelCount()

Returns:

Returns the channelCount.

getCodecData

public byte[] getCodecData()

Returns:

Returns the codecData.

getCodecDescription

public String getCodecDescription()

This method will take a look at compressionFormatand returns a String with its hex value and if known a textual note on what coded it represents.

Returns:

A description for the used codec.

getCompressionFormat

public long getCompressionFormat()

Returns:

Returns the compressionFormat.

getErrorConcealment

public GUID getErrorConcealment()

Returns:

Returns the errorConcealment.

getKbps

public int getKbps()

This method takes the value of getAverageBytesPerSec()and calculates the kbps out of it, by simply multiplying by 8 and dividing by 1000.

Returns:

amount of bits per second in kilo bits.

getSamplingRate

public long getSamplingRate()

Returns:

Returns the samplingRate.

isErrorConcealed

public boolean isErrorConcealed()

This mehtod returns whether the audio stream data is error concealed.
For now only interleaved concealment is known.

Returns:

true if error concealment is used.

prettyPrint

public String prettyPrint()

(overridden)

Overrides:

prettyPrint in class StreamChunk

Returns:

Information of current Chunk Object.

See Also:

StreamChunk.prettyPrint()

setAverageBytesPerSec

public void setAverageBytesPerSec(long avgeBytesPerSec)

Parameters:

avgeBytesPerSec - The averageBytesPerSec to set.

setBitsPerSample

public void setBitsPerSample(int bps)

Sets the bitsPerSample

Parameters:

bps -

setBlockAlignment

public void setBlockAlignment(long align)

Sets the blockAlignment.

Parameters:

align -

setChannelCount

public void setChannelCount(long channels)

Parameters:

channels - The channelCount to set.

setCodecData

public void setCodecData(byte[] codecSpecificData)

Sets the codecData

Parameters:

codecSpecificData -

setCompressionFormat

public void setCompressionFormat(long cFormatCode)

Parameters:

cFormatCode - The compressionFormat to set.

setErrorConcealment

public void setErrorConcealment(GUID errConc)

This method sets the error concealment type which is given by two GUIDs.

Parameters:

errConc - the type of error concealment the audio stream is stored as.

setSamplingRate

public void setSamplingRate(long sampRate)

Parameters:

sampRate - The samplingRate to set.