RxAndroidAudio
Android Audio encapsulation library, with part Rx support.
Usage
About lambda support
This library use lambda expression, since com.android.tools.build:gradle:2.4.0, there is native support for lambda, so I use it instead of jack support or RetroLambda, if you have lambda issue during build, please upgrade your gradle-android into 2.4.0+, or use 1.5.1 of this library, thanks!
Add to gradle dependency of your module build.gradle:
allprojects {
repositories {
maven {
url "http://dl.bintray.com/piasy/maven"
}
}
}
dependencies {
compile 'com.github.piasy:rxandroidaudio:1.5.2'
compile 'com.github.piasy:AudioProcessor:1.5.2'
}
Use in code:
Record to file:
mAudioRecorder = AudioRecorder.getInstance();
mAudioFile = new File(
Environment.getExternalStorageDirectory().getAbsolutePath() +
File.separator + System.nanoTime() + ".file.m4a");
mAudioRecorder.prepareRecord(MediaRecorder.AudioSource.MIC,
MediaRecorder.OutputFormat.MPEG_4, MediaRecorder.AudioEncoder.AAC,
mAudioFile);
mAudioRecorder.startRecord();
// ... mAudioRecorder.stopRecord();
Note: If you record a aac file, the sound quality will be poor if the sample rate and encoding bit rate is low, the sound quality will increase when you set a bigger sample rate and encoding bit rate, but as the sound quality improve, the recorded file size will also increase.
Play a file
With PlayConfig, to set audio file or audio resource, set volume, or looping:
mRxAudioPlayer.play(PlayConfig.file(audioFile).looping(true).build())
.subscribeOn(Schedulers.io())
.subscribe(new Observer<Boolean>() {
@Override
public void onSubscribe(final Disposable disposable) {
}
@Override
public void onNext(final Boolean aBoolean) {
// prepared
}
@Override
public void onError(final Throwable throwable) {
}
@Override
public void onComplete() {
// play finished
// NOTE: if looping, the Observable will never finish, you need stop playing
// onDestroy, otherwise, memory leak will happen!
}
}
);
Full example of PlayConfig
PlayConfig.file(audioFile) // play a local file
//.res(getApplicationContext(), R.raw.audio_record_end) // or play a raw resource
.looping(true) // loop or not
.leftVolume(1.0F) // left volume
.rightVolume(1.0F) // right volume
.build();
// build this config and play!Record a stream:
mOutputFile = new File(Environment.getExternalStorageDirectory().getAbsolutePath() +
File.separator + System.nanoTime() + ".stream.m4a");
mOutputFile.createNewFile();
mFileOutputStream = new FileOutputStream(mOutputFile);
mStreamAudioRecorder.start(new StreamAudioRecorder.AudioDataCallback() {
@Override
public void onAudioData(byte[] data, int size) {
if (mFileOutputStream != null) {
try {
mFileOutputStream.write(data, 0, size);
}
catch (IOException e) {
e.printStackTrace();
}
}
}
@Override
public void onError() {
mBtnStart.post(new Runnable() {
@Override
public void run() {
Toast.makeText(getApplicationContext(), "Record fail",
Toast.LENGTH_SHORT).show();
mBtnStart.setText("Start");
mIsRecording = false;
}
}
);
}
}
);
Play a stream:
Observable.just(mOutputFile).subscribeOn(Schedulers.io()).subscribe(new Action1<File>() {
@Override
public void call(File file) {
try {
mStreamAudioPlayer.init();
FileInputStream inputStream = new FileInputStream(file);
int read;
while ((read = inputStream.read(mBuffer)) > 0) {
mStreamAudioPlayer.play(mBuffer, read);
}
inputStream.close();
mStreamAudioPlayer.release();
}
catch (IOException e) {
e.printStackTrace();
}
}
}
);
Change the sound effect in stream mode:
mStreamAudioPlayer.play(
mAudioProcessor.process(mRatio, mBuffer, StreamAudioRecorder.DEFAULT_SAMPLE_RATE),
len);
See full example for more details.
Contribution are welcome!
- Please follow my code style based on SquareAndroid