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Stable version. Map displays location, Measure view records the raw d…
…B value, no weighting yet
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5 changes: 1 addition & 4 deletions
5
app/src/main/java/edu/osu/sphs/soundmap/activities/MainActivity.java
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101 changes: 101 additions & 0 deletions
101
app/src/main/java/edu/osu/sphs/soundmap/util/MeasureTask.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,101 @@ | ||
| package edu.osu.sphs.soundmap.util; | ||
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| import android.media.MediaRecorder; | ||
| import android.os.AsyncTask; | ||
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| import java.io.IOException; | ||
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| import static java.lang.Math.log10; | ||
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| /** | ||
| * Created by Gus on 12/3/2017. A tool to get the dB value in the background asynchronously | ||
| */ | ||
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| public class MeasureTask extends AsyncTask<String, Double, Double> { | ||
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| private double average; | ||
| private MediaRecorder recorder; | ||
| private OnUpdateCallback callback; | ||
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| public MeasureTask setCallback(OnUpdateCallback callback) { | ||
| this.callback = callback; | ||
| return this; | ||
| } | ||
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| public void removeCallback() { | ||
| this.callback = null; | ||
| } | ||
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| @Override | ||
| protected Double doInBackground(String... files) { | ||
| if (files.length > 0) { | ||
| recorder = new MediaRecorder(); | ||
| recorder.setAudioSource(MediaRecorder.AudioSource.MIC); | ||
| recorder.setOutputFormat(MediaRecorder.OutputFormat.AMR_WB); | ||
| recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_WB); | ||
| recorder.setOutputFile(files[0]); | ||
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| try { | ||
| recorder.prepare(); | ||
| recorder.start(); | ||
| } catch (IOException e) { | ||
| e.printStackTrace(); | ||
| } | ||
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| long endTime = System.currentTimeMillis() + 30000; | ||
| int count = 1; | ||
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| while (System.currentTimeMillis() < endTime) { | ||
| double amplitude = recorder.getMaxAmplitude(); | ||
| publishProgress(amplitude); | ||
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| try { | ||
| Thread.sleep(333); | ||
| } catch (InterruptedException e) { | ||
| e.printStackTrace(); | ||
| } | ||
| } | ||
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| recorder.stop(); | ||
| recorder.reset(); | ||
| recorder.release(); | ||
| recorder = null; | ||
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| } else { | ||
| new Error("Recording file path output parameters must be greater than one").printStackTrace(); | ||
| } | ||
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| return average; | ||
| } | ||
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| @Override | ||
| protected void onPostExecute(Double d) { | ||
| if (recorder != null) { | ||
| recorder.stop(); | ||
| recorder.reset(); | ||
| recorder.reset(); | ||
| recorder = null; | ||
| } | ||
| } | ||
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| @Override | ||
| protected void onProgressUpdate(Double... values) { | ||
| if (callback != null) { | ||
| callback.onUpdate(20 * log10(values[0] / 1.0)); | ||
| } | ||
| } | ||
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| @Override | ||
| protected void onCancelled() { | ||
| if (recorder != null) { | ||
| recorder.stop(); | ||
| recorder.reset(); | ||
| recorder.reset(); | ||
| recorder = null; | ||
| } | ||
| } | ||
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| public interface OnUpdateCallback { | ||
| void onUpdate(double averageDB); | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,15 @@ | ||
| package edu.osu.sphs.soundmap.util; | ||
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| /** | ||
| * Created by Gus on 12/2/2017. | ||
| */ | ||
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| public class Values { | ||
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| /** | ||
| * Permission request codes | ||
| */ | ||
| public static final int LOCATION_REQUEST_CODE = 11; | ||
| public static final int AUDIO_REQUEST_CODE = 12; | ||
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| } |