AudioRecord

Denotes a generic operation failure.

Denotes a failure due to the use of an invalid value.

Denotes a failure due to the improper use of a method.

indicates AudioRecord recording state is recording

indicates AudioRecord recording state is not recording

indicates AudioRecord state is ready to be used

indicates AudioRecord state is not successfully initialized.

Denotes a successful operation.

Class constructor.

Returns the configured audio data format. See ENCODING_PCM_16BIT and ENCODING_PCM_8BIT.

Returns the audio recording source.

Returns the configured channel configuration. See CHANNEL_CONFIGURATION_MONO and CHANNEL_CONFIGURATION_STEREO.

Returns the configured number of channels.

Returns the minimum buffer size required for the successful creation of an AudioRecord object. Note that this size doesn't guarantee a smooth recording under load, and higher values should be chosen according to the expected frequency at which the AudioRecord instance will be polled for new data.

Returns the notification marker position expressed in frames.

Returns the notification update period expressed in frames.

Returns the recording state of the AudioRecord instance.

Returns the configured audio data sample rate in Hz

Returns the state of the AudioRecord instance. This is useful after the AudioRecord instance has been created to check if it was initialized properly. This ensures that the appropriate hardware resources have been acquired.

Reads audio data from the audio hardware for recording into a buffer.

Reads audio data from the audio hardware for recording into a buffer.

Reads audio data from the audio hardware for recording into a direct buffer. If this buffer is not a direct buffer, this method will always return 0.

Releases the native AudioRecord resources. The object can no longer be used and the reference should be set to null after a call to release()

Sets the marker position at which the listener is called, if set with setRecordPositionUpdateListener(OnRecordPositionUpdateListener) or setRecordPositionUpdateListener(OnRecordPositionUpdateListener, Handler).

Sets the period at which the listener is called, if set with setRecordPositionUpdateListener(OnRecordPositionUpdateListener) or setRecordPositionUpdateListener(OnRecordPositionUpdateListener, Handler).

Sets the listener the AudioRecord notifies when a previously set marker is reached or for each periodic record head position update.

Sets the listener the AudioRecord notifies when a previously set marker is reached or for each periodic record head position update. Use this method to receive AudioRecord events in the Handler associated with another thread than the one in which you created the AudioTrack instance.

Starts recording from the AudioRecord instance.

Stops recording.

Is called before the object's memory is being reclaimed by the VM. This can only happen once the VM has detected, during a run of the garbage collector, that the object is no longer reachable by any thread of the running application.

The method can be used to free system resources or perform other cleanup before the object is garbage collected. The default implementation of the method is empty, which is also expected by the VM, but subclasses can override finalize() as required. Uncaught exceptions which are thrown during the execution of this method cause it to terminate immediately but are otherwise ignored.

Note that the VM does guarantee that finalize() is called at most once for any object, but it doesn't guarantee when (if at all) finalize() will be called. For example, object B's finalize() can delay the execution of object A's finalize() method and therefore it can delay the reclamation of A's memory. To be safe, use a ReferenceQueue, because it provides more control over the way the VM deals with references during garbage collection.