AudioBuffer (Codename One API)

java.lang.Object
- com.codename1.media.AudioBuffer

```
public class AudioBuffer
extends Object
```
This class can be used to capture raw PCM data from the device's microphone. AudioBuffers should be obtained via the MediaManager.getAudioBuffer(java.lang.String, boolean, int) method.

Nested Class Summary

Nested Classes
Modifier and Type	Class and Description
`static interface`	`AudioBuffer.AudioBufferCallback` A callback that can be registered to receive notifications when the contents of the AudioBuffer is changed.

Constructor Summary

Constructors
Constructor and Description

AudioBuffer(int maxSize)
Creates a new AudioBuffer with the given maximum size.

Constructors
Constructor and Description
`AudioBuffer(int maxSize)` Creates a new AudioBuffer with the given maximum size.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`void`	`addCallback(AudioBuffer.AudioBufferCallback l)` Adds a callback to be notified when the contents of this buffer are changed.
`void`	`copyFrom(AudioBuffer source)` Copies data into the buffer from the given source buffer.
`void`	`copyFrom(int sampleRate, int numChannels, float[] source)` Copies data from the source array into this buffer.
`void`	`copyFrom(int sampleRate, int numChannels, float[] source, int offset, int len)` Copies data from the source array (in the given range) into the buffer.
`void`	`copyTo(AudioBuffer dest)` Copies data to another audio buffer.
`void`	`copyTo(float[] dest)` Copies data from this buffer to the given float array.
`void`	`copyTo(float[] dest, int offset)` Copies data from this buffer to the given float array.
`void`	`downSample(int targetSampleRate)` Downsamples the buffer to the given rate.
`int`	`getMaxSize()` Gets the maximum size of the buffer.
`int`	`getNumChannels()`
`int`	`getSampleRate()`
`int`	`getSize()` The current size of the buffer.
`void`	`removeCallback(AudioBuffer.AudioBufferCallback l)` Removes a callback from the audio buffer.

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

- Constructor Detail
  - AudioBuffer
```
public AudioBuffer(int maxSize)
```
    Creates a new AudioBuffer with the given maximum size.
    
    Parameters:
    
    maxSize - The maximum size of the buffer.
- Method Detail
  - copyFrom
```
public void copyFrom(AudioBuffer source)
```
    Copies data into the buffer from the given source buffer. This will trigger the callbacks' AudioBuffer.AudioBufferCallback.frameReceived(com.codename1.media.AudioBuffer) method.
    
    Parameters:
    
    source - The source buffer to copy from.
  - copyFrom
```
public void copyFrom(int sampleRate,
                     int numChannels,
                     float[] source)
```
    Copies data from the source array into this buffer. This will trigger the callbacks' AudioBuffer.AudioBufferCallback.frameReceived(com.codename1.media.AudioBuffer) method.
    
    Parameters:
    
    source -
  - copyFrom
```
public void copyFrom(int sampleRate,
                     int numChannels,
                     float[] source,
                     int offset,
                     int len)
```
    Copies data from the source array (in the given range) into the buffer. This will trigger the callbacks' AudioBuffer.AudioBufferCallback.frameReceived(com.codename1.media.AudioBuffer) method.
    
    Parameters:
    
    source - The source array to copy data from.
    
    offset - The offset in the source array to begin copying from.
    
    len - The length of the range to copy.
  - copyTo
```
public void copyTo(AudioBuffer dest)
```
    Copies data to another audio buffer. This will trigger callbacks in the destination.
    
    Parameters:
    
    dest - The destination audio buffer.
  - copyTo
```
public void copyTo(float[] dest)
```
    Copies data from this buffer to the given float array.
    
    Parameters:
    
    dest - The destination float array to copy to.
  - copyTo
```
public void copyTo(float[] dest,
                   int offset)
```
    Copies data from this buffer to the given float array.
    
    Parameters:
    
    dest - The destination float array.
    
    offset - The offset in the destination array to start copying to.
  - getSize
```
public int getSize()
```
    The current size of the buffer. This value will be changed each time data is copied into the buffer to reflect the current size of the data.
    
    Returns:
  - getMaxSize
```
public int getMaxSize()
```
    Gets the maximum size of the buffer. Trying to copy more than this amount of data into the buffer will result in an IndexOutOfBoundsException.
    
    Returns:
  - addCallback
```
public void addCallback(AudioBuffer.AudioBufferCallback l)
```
    Adds a callback to be notified when the contents of this buffer are changed.
    
    Parameters:
    
    l - The AudioBufferCallback
  - removeCallback
```
public void removeCallback(AudioBuffer.AudioBufferCallback l)
```
    Removes a callback from the audio buffer.
    
    Parameters:
    
    l - The callback to remove.
  - getSampleRate
```
public int getSampleRate()
```
    Returns:
    
    the sampleRate
  - getNumChannels
```
public int getNumChannels()
```
    Returns:
    
    the numChannels
  - downSample
```
public void downSample(int targetSampleRate)
```
    Downsamples the buffer to the given rate. This will change the result of getSize() and getSampleRate(). Note: This should only be called inside the AudioBuffer callback since it is modifying the contents of the buffer.
    
    Parameters:
    
    targetSampleRate - The new target rate.

Class AudioBuffer

Nested Class Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

AudioBuffer

Method Detail

copyFrom

copyFrom

copyFrom

copyTo

copyTo

copyTo

getSize

getMaxSize

addCallback

removeCallback

getSampleRate

getNumChannels

downSample