RxJava2 Reactive Audio Recorder
A reactive (RxJava 2) implementation of the AudioRecord API for recording raw (pcm) audio-data
Usage
Create an instance of RecorderOnSubscribe giving it the path to the file
Java
ObservableAudioRecorder recorder = new ObservableAudioRecorder.Builder(MediaRecorder.AudioSource.CAMCORDER)
.sampleRate(22050)
.stereo()
.file(Environment.getExternalStorageDirectory() + "/sample.wav")
.build();
Kotlin
ObservableAudioRecorder recorder = ObservableAudioRecorder.Builder(MediaRecorder.AudioSource.CAMCORDER)
.sampleRate(22050)
.stereo()
.file(Environment.getExternalStorageDirectory().absolutePath + "/sample.wav")
.build()
Use the recorder OnSubscribe to create an observable
Java
Observable.create(recorder)
.subscribe(shorts -> {
...
recorder.writeDataToFile(shorts);
}, throwable -> errorhandling(throwable));
Kotlin
Observable.create(observableAudioRecorder)
.subscribe({ shorts ->
...
observableAudioRecorder!!.writeDataToFile(shorts)
}) { throwable -> errorhandling(throwable) }
After setting up the Observer, manipulate the recording-process by using these methods
Name | Description |
---|---|
start() | Starts the recorder and moves it to Recording state |
stop() | Stops the recorder and moves it to Stopped state |
pause() | Pauses the recorder and moves it to Paused state |
resume() | Resumes the recorder if it's in Paused state |
isRecording() | Returns true if the recorder is in Recording state |
isRecordingStopped() | Checks whether the recorder is in Stopped state or not |
Helper methods for wave file write operations
Name | Description |
---|---|
writeDataToFile(shorts) | Writes the short buffers to wave file |
completeRecording() | Writes the Wave header info to the file (Call it after stop() method) |
Download
Repository available on https://jitpack.io/#hannesa2/RxAudioRecorder
allprojects {
repositories {
...
maven { url 'https://jitpack.io' }
}
}
dependencies {
implementation 'com.github.hannesa2:RxAudioRecorder:2.0'
}
License
Copyright 2018 Hannes Achleitner
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.