AudioTrack (Google Android Library 4.1.1.4 API)

java.lang.Object
- android.media.AudioTrack

```
public class AudioTrack
extends Object
```

Nested Class Summary

Nested Classes
Modifier and Type Class and Description

static interface AudioTrack.OnPlaybackPositionUpdateListener

Nested Classes
Modifier and Type	Class and Description
`static interface`	`AudioTrack.OnPlaybackPositionUpdateListener`

Field Summary

Fields
Modifier and Type	Field and Description
`static int`	`ERROR`
`static int`	`ERROR_BAD_VALUE`
`static int`	`ERROR_INVALID_OPERATION`
`static int`	`MODE_STATIC`
`static int`	`MODE_STREAM`
`static int`	`PLAYSTATE_PAUSED`
`static int`	`PLAYSTATE_PLAYING`
`static int`	`PLAYSTATE_STOPPED`
`static int`	`STATE_INITIALIZED`
`static int`	`STATE_NO_STATIC_DATA`
`static int`	`STATE_UNINITIALIZED`
`static int`	`SUCCESS`

Constructor Summary

Constructors
Constructor and Description
`AudioTrack(int streamType, int sampleRateInHz, int channelConfig, int audioFormat, int bufferSizeInBytes, int mode)`
`AudioTrack(int streamType, int sampleRateInHz, int channelConfig, int audioFormat, int bufferSizeInBytes, int mode, int sessionId)`

Method Summary

Methods
Modifier and Type	Method and Description
`int`	`attachAuxEffect(int effectId)`
`protected void`	`finalize()`
`void`	`flush()`
`int`	`getAudioFormat()`
`int`	`getAudioSessionId()`
`int`	`getChannelConfiguration()`
`int`	`getChannelCount()`
`static float`	`getMaxVolume()`
`static int`	`getMinBufferSize(int sampleRateInHz, int channelConfig, int audioFormat)`
`static float`	`getMinVolume()`
`protected int`	`getNativeFrameCount()`
`static int`	`getNativeOutputSampleRate(int streamType)`
`int`	`getNotificationMarkerPosition()`
`int`	`getPlaybackHeadPosition()`
`int`	`getPlaybackRate()`
`int`	`getPlayState()`
`int`	`getPositionNotificationPeriod()`
`int`	`getSampleRate()`
`int`	`getState()`
`int`	`getStreamType()`
`void`	`pause()`
`void`	`play()`
`void`	`release()`
`int`	`reloadStaticData()`
`int`	`setAuxEffectSendLevel(float level)`
`int`	`setLoopPoints(int startInFrames, int endInFrames, int loopCount)`
`int`	`setNotificationMarkerPosition(int markerInFrames)`
`int`	`setPlaybackHeadPosition(int positionInFrames)`
`void`	`setPlaybackPositionUpdateListener(AudioTrack.OnPlaybackPositionUpdateListener listener)`
`void`	`setPlaybackPositionUpdateListener(AudioTrack.OnPlaybackPositionUpdateListener listener, Handler handler)`
`int`	`setPlaybackRate(int sampleRateInHz)`
`int`	`setPositionNotificationPeriod(int periodInFrames)`
`protected void`	`setState(int state)`
`int`	`setStereoVolume(float leftVolume, float rightVolume)`
`void`	`stop()`
`int`	`write(byte[] audioData, int offsetInBytes, int sizeInBytes)`
`int`	`write(short[] audioData, int offsetInShorts, int sizeInShorts)`

Methods inherited from class java.lang.Object
clone, equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail
- PLAYSTATE_STOPPED
```
public static final int PLAYSTATE_STOPPED
```
  See Also:
  Constant Field Values
- PLAYSTATE_PAUSED
```
public static final int PLAYSTATE_PAUSED
```
  See Also:
  Constant Field Values
- PLAYSTATE_PLAYING
```
public static final int PLAYSTATE_PLAYING
```
  See Also:
  Constant Field Values
- MODE_STATIC
```
public static final int MODE_STATIC
```
  See Also:
  Constant Field Values
- MODE_STREAM
```
public static final int MODE_STREAM
```
  See Also:
  Constant Field Values
- STATE_UNINITIALIZED
```
public static final int STATE_UNINITIALIZED
```
  See Also:
  Constant Field Values
- STATE_INITIALIZED
```
public static final int STATE_INITIALIZED
```
  See Also:
  Constant Field Values
- STATE_NO_STATIC_DATA
```
public static final int STATE_NO_STATIC_DATA
```
  See Also:
  Constant Field Values
- SUCCESS
```
public static final int SUCCESS
```
  See Also:
  Constant Field Values
- ERROR
```
public static final int ERROR
```
  See Also:
  Constant Field Values
- ERROR_BAD_VALUE
```
public static final int ERROR_BAD_VALUE
```
  See Also:
  Constant Field Values
- ERROR_INVALID_OPERATION
```
public static final int ERROR_INVALID_OPERATION
```
  See Also:
  Constant Field Values

Constructor Detail

AudioTrack

public AudioTrack(int streamType,
          int sampleRateInHz,
          int channelConfig,
          int audioFormat,
          int bufferSizeInBytes,
          int mode)
           throws IllegalArgumentException

Throws:: IllegalArgumentException

AudioTrack

public AudioTrack(int streamType,
          int sampleRateInHz,
          int channelConfig,
          int audioFormat,
          int bufferSizeInBytes,
          int mode,
          int sessionId)
           throws IllegalArgumentException

Throws:: IllegalArgumentException

Method Detail

release
```
public void release()
```

finalize
```
protected void finalize()
```
Overrides:

finalize in class Object

getMinVolume
```
public static float getMinVolume()
```

getMaxVolume
```
public static float getMaxVolume()
```

getSampleRate
```
public int getSampleRate()
```

getPlaybackRate
```
public int getPlaybackRate()
```

getAudioFormat
```
public int getAudioFormat()
```

getStreamType
```
public int getStreamType()
```

getChannelConfiguration
```
public int getChannelConfiguration()
```

getChannelCount
```
public int getChannelCount()
```

getState
```
public int getState()
```

getPlayState
```
public int getPlayState()
```

getNativeFrameCount
```
protected int getNativeFrameCount()
```

getNotificationMarkerPosition

public int getNotificationMarkerPosition()

getPositionNotificationPeriod

public int getPositionNotificationPeriod()

getPlaybackHeadPosition
```
public int getPlaybackHeadPosition()
```

getNativeOutputSampleRate

public static int getNativeOutputSampleRate(int streamType)

getMinBufferSize

public static int getMinBufferSize(int sampleRateInHz,
                   int channelConfig,
                   int audioFormat)

getAudioSessionId
```
public int getAudioSessionId()
```

setPlaybackPositionUpdateListener

public void setPlaybackPositionUpdateListener(AudioTrack.OnPlaybackPositionUpdateListener listener)

setPlaybackPositionUpdateListener

public void setPlaybackPositionUpdateListener(AudioTrack.OnPlaybackPositionUpdateListener listener,
                                     Handler handler)

setStereoVolume

public int setStereoVolume(float leftVolume,
                  float rightVolume)

setPlaybackRate

public int setPlaybackRate(int sampleRateInHz)

setNotificationMarkerPosition

public int setNotificationMarkerPosition(int markerInFrames)

setPositionNotificationPeriod

public int setPositionNotificationPeriod(int periodInFrames)

setPlaybackHeadPosition

public int setPlaybackHeadPosition(int positionInFrames)

setLoopPoints

public int setLoopPoints(int startInFrames,
                int endInFrames,
                int loopCount)

setState
```
protected void setState(int state)
```

play

public void play()
          throws IllegalStateException

Throws:: IllegalStateException

stop

public void stop()
          throws IllegalStateException

Throws:: IllegalStateException

pause

public void pause()
           throws IllegalStateException

Throws:: IllegalStateException

flush
```
public void flush()
```

write

public int write(byte[] audioData,
        int offsetInBytes,
        int sizeInBytes)

write

public int write(short[] audioData,
        int offsetInShorts,
        int sizeInShorts)

reloadStaticData
```
public int reloadStaticData()
```

attachAuxEffect

public int attachAuxEffect(int effectId)

setAuxEffectSendLevel

public int setAuxEffectSendLevel(float level)

Class AudioTrack

Nested Class Summary

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

PLAYSTATE_STOPPED

PLAYSTATE_PAUSED

PLAYSTATE_PLAYING

MODE_STATIC

MODE_STREAM

STATE_UNINITIALIZED

STATE_INITIALIZED

STATE_NO_STATIC_DATA

SUCCESS

ERROR

ERROR_BAD_VALUE

ERROR_INVALID_OPERATION

Constructor Detail

AudioTrack

AudioTrack

Method Detail

release

finalize

getMinVolume

getMaxVolume

getSampleRate

getPlaybackRate

getAudioFormat

getStreamType

getChannelConfiguration

getChannelCount

getState

getPlayState

getNativeFrameCount

getNotificationMarkerPosition

getPositionNotificationPeriod

getPlaybackHeadPosition

getNativeOutputSampleRate

getMinBufferSize

getAudioSessionId

setPlaybackPositionUpdateListener

setPlaybackPositionUpdateListener

setStereoVolume

setPlaybackRate

setNotificationMarkerPosition

setPositionNotificationPeriod

setPlaybackHeadPosition

setLoopPoints

setState

play

stop

pause

flush

write

write

reloadStaticData

attachAuxEffect

setAuxEffectSendLevel