com.smartdevicelink.managers.audio

Class BaseAudioDecoder

java.lang.Object

com.smartdevicelink.managers.audio.BaseAudioDecoder

Direct Known Subclasses:

AudioDecoder, AudioDecoderCompat

public abstract class BaseAudioDecoder
extends Object

Field Summary

Fields

Modifier and Type	Field and Description
protected Uri	audioSource
protected WeakReference<Context>	contextWeakReference
protected MediaCodec	decoder
protected MediaExtractor	extractor
protected AudioDecoderListener	listener
protected int	targetSampleRate
protected int	targetSampleType

Constructor Summary

Constructors

Constructor and Description
BaseAudioDecoder(Uri audioSource, Context context, int sampleRate, int sampleType, AudioDecoderListener listener)

Method Summary

Modifier and Type	Method and Description
protected void	initMediaComponents()
protected MediaCodec.BufferInfo	onInputBufferAvailable(MediaExtractor extractor, ByteBuffer inputBuffer)
protected void	onMediaCodecError(MediaCodec.CodecException e)
protected SampleBuffer	onOutputBufferAvailable(ByteBuffer outputBuffer)
protected void	onOutputFormatChanged(MediaFormat mediaFormat)
abstract void	start()
void	stop()

Methods inherited from class java.lang.Object

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

Field Detail

targetSampleRate

protected final int targetSampleRate

targetSampleType

protected final int targetSampleType

extractor

protected MediaExtractor extractor

decoder

protected MediaCodec decoder

audioSource

protected final Uri audioSource

contextWeakReference

protected final WeakReference<Context> contextWeakReference

listener

protected final AudioDecoderListener listener

Constructor Detail

BaseAudioDecoder

public BaseAudioDecoder(@NonNull
                        Uri audioSource,
                        @NonNull
                        Context context,
                        int sampleRate,
                        int sampleType,
                        AudioDecoderListener listener)

Parameters:

audioSource - Uri of the audio source to be converted

context - the context

sampleRate - can be either 8000, 16000, 22050 or 44100

sampleType - can be either UNSIGNED_8_BIT, SIGNED_16_BIT, FLOAT

listener - listener for event callbacks

See Also:

AudioPassThruCapabilities.getSamplingRate(), AudioStreamManager.SampleType

Method Detail

initMediaComponents

protected void initMediaComponents()
                            throws Exception

Throws:

Exception

onInputBufferAvailable

protected MediaCodec.BufferInfo onInputBufferAvailable(@NonNull
                                                       MediaExtractor extractor,
                                                       @NonNull
                                                       ByteBuffer inputBuffer)

onOutputBufferAvailable

protected SampleBuffer onOutputBufferAvailable(@NonNull
                                               ByteBuffer outputBuffer)

onOutputFormatChanged

protected void onOutputFormatChanged(@NonNull
                                     MediaFormat mediaFormat)

onMediaCodecError

protected void onMediaCodecError(@NonNull
                                 MediaCodec.CodecException e)

start

public abstract void start()

stop

public void stop()