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60 changes: 60 additions & 0 deletions
60
app/src/main/java/de/delbertooo/careco/android/preheatingcontrol/Recorder.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,60 @@ | ||
| package de.delbertooo.careco.android.preheatingcontrol; | ||
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| import android.media.AudioFormat; | ||
| import android.media.AudioRecord; | ||
| import android.media.MediaRecorder; | ||
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| import java.util.ArrayList; | ||
| import java.util.List; | ||
|
|
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| /** | ||
| * Created by robert on 05.03.17. | ||
| */ | ||
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| public class Recorder { | ||
| private static final int RECORDER_SAMPLE_RATE = 8000; | ||
| private static final int RECORDER_CHANNELS = AudioFormat.CHANNEL_IN_MONO; | ||
| private static final int RECORDER_AUDIO_ENCODING = AudioFormat.ENCODING_PCM_16BIT; | ||
| private static final int BUFFER_SIZE = AudioRecord.getMinBufferSize(RECORDER_SAMPLE_RATE, RECORDER_CHANNELS, RECORDER_AUDIO_ENCODING); | ||
| private AudioRecord recorder = new AudioRecord(MediaRecorder.AudioSource.MIC, RECORDER_SAMPLE_RATE, RECORDER_CHANNELS, RECORDER_AUDIO_ENCODING, BUFFER_SIZE); | ||
| private boolean recording = false; | ||
| private Thread readThread; | ||
| private List<Short> result = new ArrayList<>(); | ||
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| public void start() { | ||
| if (recording) { | ||
| throw new RuntimeException("Already recording."); | ||
| } | ||
| recording = true; | ||
| recorder.startRecording(); | ||
| readThread = new Thread(new Runnable() { | ||
| @Override | ||
| public void run() { | ||
| short buffer[] = new short[BUFFER_SIZE]; | ||
| while (recording) { | ||
| int bytesRead = recorder.read(buffer, 0, BUFFER_SIZE); | ||
| for (int i = 0; i < bytesRead; i++) { | ||
| result.add(buffer[i]); | ||
| } | ||
| } | ||
| } | ||
| }); | ||
| readThread.start(); | ||
| } | ||
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| public void stop() { | ||
| recording = false; | ||
| try { | ||
| readThread.join(); | ||
| } catch (InterruptedException e) { | ||
| throw new RuntimeException("Failed to stop recording.", e); | ||
| } | ||
| recorder.stop(); | ||
| recorder.release(); | ||
| readThread = null; | ||
| } | ||
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| public List<Short> getResult() { | ||
| return result; | ||
| } | ||
| } |
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