Rx wrapper library for Android's AudioRecord API. (aka RxAudioRecord)
ReactiveAudioRecord
A reactive (Rx) implementation of the AudioRecord API for recording raw (pcm) audio-data. Also includes helper methods for the creation of Wave audio files.
How to use it?
Create an instance of RecorderOnSubscribe giving it the path to the file
final String filePath = Environment.getExternalStorageDirectory() + "/sample.wav"; //dummy file
RecorderOnSubscribe recorder = new RecorderOnSubscribe.Builder(filePath)
.sampleRate(22000) //by default 44100
.stereo() //by default mono
.audioSourceCamcorder() //by default MIC
.build();
Use the recorder OnSubscribe to create an observable
Observable.create(recorder)
.subscribe( shorts -> {
...
recorder.writeShortsToFile(shorts); //a helper method that writes the buffers to (wave) file
});
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 |
|---|---|
| writeShortsToFile(shorts) | Writes the short buffers to wave file |
| completeRecording() | Writes the Wave header info to the file (Call it after stop() method) |
And that’s it! Check out the sample code for a working example!
Download
Repository available on jCenter
compile 'com.minimize.library:reactiveaudiorecord:1.0.2'
License
Copyright 2015 Ahmed Rizwan
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.