Package org.openhab.core.audio.utils

Class AudioWaveUtils

java.lang.Object

org.openhab.core.audio.utils.AudioWaveUtils

@NonNullByDefault
public class AudioWaveUtils
extends Object

Some utility methods for parsing and cleaning wav files

Author:

Gwendal Roulleau - Initial contribution

Constructor Summary

Constructors

Constructor	Description
AudioWaveUtils()

Method Summary

Modifier and Type	Method	Description
static AudioFormat	parseWavFormat(InputStream inputStream)
static void	removeFMT(InputStream data)	Remove FMT block (WAV header) from a stream by consuming it until the magic packet signaling data.

Methods inherited from class java.lang.Object

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

Constructor Details

AudioWaveUtils

public AudioWaveUtils()

Method Details

parseWavFormat

public static AudioFormat parseWavFormat(InputStream inputStream)
                                  throws IOException

Parameters:

inputStream - an InputStream of a wav file to analyze. The InputStream must have a fmt header and support the mark/reset method

Returns:

The audio format, or the default audio format if an error occured

Throws:

IOException - If i/o exception occurs, or if the InputStream doesn't support the mark/reset

removeFMT

public static void removeFMT(InputStream data)
                      throws IOException

Remove FMT block (WAV header) from a stream by consuming it until the magic packet signaling data. Limit to 200 readInt() (arbitrary value used in sun audio package). If you don't remove/consume the FMT and pass the data to a player as if it is a pure PCM stream, it could try to play it and will do a "click" noise at the beginning.

Parameters:

data - A wav container in an InputStream

Throws:

IOException