There is a newer version of this library with more functionality (not a direct plugin replacement) jAudioTrack2
Here is the opposite number to jAudioRecord, again based on javax.sound.sampled it's setup is very similar.
Again, not tested on linux or Mac, feedback would be appreciated.
AudioTrack
Author: Steve Laming
Version: 1.0
The demo app (ATTest.xip) loads a small wav file (you can also load your own with a file selector) to play. It depends on:
jRandomAccessFile
Threading
The threading library is necessary so we can control the processing of data as it arrives within B4j. The data capture is blocking, so if you run it on the GUI thread, the app will lock.
It plays back PCM signed linear data. No Mp3 or other formats, although a byte array is passed to the Write method if you have an decoder library to decode a different format first.
You cannot debug an application that uses the threading library, so if you are just testing and don't need a Gui, run the playing subroutine in the Gui thread.
Download jAudioTrack.zip and unzip the xml and jar files to your additional libraries folder.
Have fun.
ATTest1.zip should fix issues in post #5
Here is the opposite number to jAudioRecord, again based on javax.sound.sampled it's setup is very similar.
Again, not tested on linux or Mac, feedback would be appreciated.
AudioTrack
Author: Steve Laming
Version: 1.0
- Methods:
- AddLineListener(EventName As String)
Adds a listener to this line.
Callback to sub {EventName}_Event will be called when one of the following events has been raised:
OPEN, CLOSE, START or STOP
Available As Int
Obtains the number of bytes of data currently available
to the application for processing in the data line's internal buffer.
Buffersize As Int
Get the buffer size of the SourceDataLine
Drain
Drains queued data from the line by continuing data I/O until the data line's internal buffer has been emptied.
Flush
Flushes queued data from the line.
Initialize(SampleRateHZ As Float, SampleSizeInBits As Int, ChannelConfig As Int) As Boolean
Initialize the object
IsActive As Boolean
Indicates whether the line is engaging in active I/O (such as playback or capture). When an inactive line becomes active, it sends a START event to its listeners.
Similarly, when an active line becomes inactive, it sends a STOP event.
IsInitialized As Boolean
Is the Audiotrack initialized?
IsRunning As Boolean
Indicates whether the line is running. The default is false. An open line begins running when the first data is presented in response to an invocation of the start method,
and continues until presentation ceases in response to a call to stop or because playback completes.
LastException As String
If an error occurred get the last exception
Release
Closes the line
Start
Start playing data
Stop
Stop playing data
Write(Data As Byte(), Off As Int, Len As Int) As Int
Writes data to the SourceDataLine, id more data is sent that it can read it will block the thread
off = offset into array data
Returns the actual number of bytes written
- AddLineListener(EventName As String)
The demo app (ATTest.xip) loads a small wav file (you can also load your own with a file selector) to play. It depends on:
jRandomAccessFile
Threading
The threading library is necessary so we can control the processing of data as it arrives within B4j. The data capture is blocking, so if you run it on the GUI thread, the app will lock.
It plays back PCM signed linear data. No Mp3 or other formats, although a byte array is passed to the Write method if you have an decoder library to decode a different format first.
You cannot debug an application that uses the threading library, so if you are just testing and don't need a Gui, run the playing subroutine in the Gui thread.
Download jAudioTrack.zip and unzip the xml and jar files to your additional libraries folder.
Have fun.
ATTest1.zip should fix issues in post #5
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