Package org.webrtc.audio

Class WebRtcAudioTrack

java.lang.Object

org.webrtc.audio.WebRtcAudioTrack

public class WebRtcAudioTrack
extends Object

Field Summary

Fields

Modifier and Type	Field	Description
private static final int	AUDIO_TRACK_START
private static final int	AUDIO_TRACK_STOP
private static final long	AUDIO_TRACK_THREAD_JOIN_TIMEOUT_MS
private final Object	audioAttributes
private IAudioTrackListener	audioTrackListener
private static final int	BITS_PER_SAMPLE
private static final int	BUFFERS_PER_SECOND
private ByteBuffer	byteBuffer
private int	bytesPerSample
private static final int	CALLBACK_BUFFER_SIZE_MS
private int	channels
private static final int	DEFAULT_USAGE
private byte[]	emptyBytes
private final JavaAudioDeviceModule.AudioTrackErrorCallback	errorCallback
private int	initialBufferSizeInFrames
private long	nativeAudioTrack
private int	readSizeInBytes
private int	sampleRate
private boolean	speakerMute
private final JavaAudioDeviceModule.AudioTrackStateCallback	stateCallback
private static final String	TAG
private final ThreadUtils.ThreadChecker	threadChecker
private boolean	useLowLatency

Constructor Summary

Constructors

Constructor	Description
WebRtcAudioTrack(Object context, Object audioManager)
WebRtcAudioTrack(Object context, Object audioManager, Object audioAttributes, JavaAudioDeviceModule.AudioTrackErrorCallback errorCallback, JavaAudioDeviceModule.AudioTrackStateCallback stateCallback, boolean useLowLatency, boolean enableVolumeLogger, IAudioTrackListener audioTrackListener)

Method Summary

Modifier and Type	Method	Description
private static void	assertTrue(boolean condition)
private void	doAudioTrackStateCallback(int audioState)
private int	getBufferSizeInFrames()
int	getBytesPerSample()
int	getChannels()
private int	getInitialBufferSizeInFrames()
ByteBuffer	getPlayoutData()
private int	GetPlayoutUnderrunCount()
int	getReadSizeInBytes()
int	getSampleRate()
private int	getStreamMaxVolume()
private int	getStreamVolume()	Get current volume level for a phone call audio stream.
private int	initPlayout(int sampleRate, int channels, double bufferSizeFactor)
private void	logBufferCapacityInFrames()
private static void	logNativeOutputSampleRate(int requestedSampleRateInHz)
private static void	nativeCacheDirectBufferAddress(long nativeAudioTrackJni, ByteBuffer byteBuffer)
private static void	nativeGetPlayoutData(long nativeAudioTrackJni, int bytes)
private void	reportWebRtcAudioTrackError(String errorMessage)
private void	reportWebRtcAudioTrackInitError(String errorMessage)
private void	reportWebRtcAudioTrackStartError(JavaAudioDeviceModule.AudioTrackStartErrorCode errorCode, String errorMessage)
void	setNativeAudioTrack(long nativeAudioTrack)
void	setSpeakerMute(boolean mute)
private boolean	setStreamVolume(int volume)
private boolean	startPlayout()
private boolean	stopPlayout()

Methods inherited from class java.lang.Object

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

Field Details

TAG

private static final String TAG

See Also:

• Constant Field Values

BITS_PER_SAMPLE

private static final int BITS_PER_SAMPLE

See Also:

• Constant Field Values

CALLBACK_BUFFER_SIZE_MS

private static final int CALLBACK_BUFFER_SIZE_MS

See Also:

• Constant Field Values

BUFFERS_PER_SECOND

private static final int BUFFERS_PER_SECOND

See Also:

• Constant Field Values

AUDIO_TRACK_THREAD_JOIN_TIMEOUT_MS

private static final long AUDIO_TRACK_THREAD_JOIN_TIMEOUT_MS

See Also:

• Constant Field Values

DEFAULT_USAGE

private static final int DEFAULT_USAGE

See Also:

• Constant Field Values

AUDIO_TRACK_START

private static final int AUDIO_TRACK_START

See Also:

• Constant Field Values

AUDIO_TRACK_STOP

private static final int AUDIO_TRACK_STOP

See Also:

• Constant Field Values

nativeAudioTrack

private long nativeAudioTrack

threadChecker

private final ThreadUtils.ThreadChecker threadChecker

byteBuffer

private ByteBuffer byteBuffer

audioAttributes

@Nullable
private final Object audioAttributes

speakerMute

private volatile boolean speakerMute

emptyBytes

private byte[] emptyBytes

useLowLatency

private boolean useLowLatency

initialBufferSizeInFrames

private int initialBufferSizeInFrames

errorCallback

@Nullable
private final JavaAudioDeviceModule.AudioTrackErrorCallback errorCallback

stateCallback

@Nullable
private final JavaAudioDeviceModule.AudioTrackStateCallback stateCallback

readSizeInBytes

private int readSizeInBytes

sampleRate

private int sampleRate

bytesPerSample

private int bytesPerSample

channels

private int channels

audioTrackListener

private IAudioTrackListener audioTrackListener

Constructor Details

WebRtcAudioTrack

WebRtcAudioTrack(Object context,
 Object audioManager)

WebRtcAudioTrack

WebRtcAudioTrack(Object context,
 Object audioManager,
 @Nullable
 Object audioAttributes,
 @Nullable
 JavaAudioDeviceModule.AudioTrackErrorCallback errorCallback,
 @Nullable
 JavaAudioDeviceModule.AudioTrackStateCallback stateCallback,
 boolean useLowLatency,
 boolean enableVolumeLogger,
 IAudioTrackListener audioTrackListener)

Method Details

getPlayoutData

public ByteBuffer getPlayoutData()

getReadSizeInBytes

public int getReadSizeInBytes()

setNativeAudioTrack

public void setNativeAudioTrack(long nativeAudioTrack)

initPlayout

private int initPlayout(int sampleRate,
 int channels,
 double bufferSizeFactor)

startPlayout

private boolean startPlayout()

getBytesPerSample

public int getBytesPerSample()

stopPlayout

private boolean stopPlayout()

getStreamMaxVolume

private int getStreamMaxVolume()

setStreamVolume

private boolean setStreamVolume(int volume)

getStreamVolume

private int getStreamVolume()

Get current volume level for a phone call audio stream.

GetPlayoutUnderrunCount

private int GetPlayoutUnderrunCount()

logNativeOutputSampleRate

private static void logNativeOutputSampleRate(int requestedSampleRateInHz)

getBufferSizeInFrames

private int getBufferSizeInFrames()

getInitialBufferSizeInFrames

private int getInitialBufferSizeInFrames()

logBufferCapacityInFrames

private void logBufferCapacityInFrames()

assertTrue

private static void assertTrue(boolean condition)

nativeCacheDirectBufferAddress

private static void nativeCacheDirectBufferAddress(long nativeAudioTrackJni,
 ByteBuffer byteBuffer)

nativeGetPlayoutData

private static void nativeGetPlayoutData(long nativeAudioTrackJni,
 int bytes)

setSpeakerMute

public void setSpeakerMute(boolean mute)

reportWebRtcAudioTrackInitError

private void reportWebRtcAudioTrackInitError(String errorMessage)

reportWebRtcAudioTrackStartError

private void reportWebRtcAudioTrackStartError(JavaAudioDeviceModule.AudioTrackStartErrorCode errorCode,
 String errorMessage)

reportWebRtcAudioTrackError

private void reportWebRtcAudioTrackError(String errorMessage)

doAudioTrackStateCallback

private void doAudioTrackStateCallback(int audioState)

getSampleRate

public int getSampleRate()

getChannels

public int getChannels()