add audio recorder

1 files changed, 159 insertions, 0 deletions

diff --git a/src/main/java/eu/siacs/conversations/ui/RecordingActivity.java b/src/main/java/eu/siacs/conversations/ui/RecordingActivity.java
new file mode 100644
index 000000000..4c2a79a08
--- /dev/null
+++ b/src/main/java/eu/siacs/conversations/ui/RecordingActivity.java
@@ -0,0 +1,159 @@
+package eu.siacs.conversations.ui;
+
+import android.app.Activity;
+import android.content.Intent;
+import android.media.MediaRecorder;
+import android.net.Uri;
+import android.os.Build;
+import android.os.Bundle;
+import android.os.Environment;
+import android.os.Handler;
+import android.os.SystemClock;
+import android.util.Log;
+import android.view.View;
+import android.view.WindowManager;
+import android.widget.Button;
+import android.widget.TextView;
+
+import eu.siacs.conversations.R;
+
+import java.io.File;
+import java.io.IOException;
+import java.text.SimpleDateFormat;
+import java.util.Date;
+import java.util.Locale;
+
+import eu.siacs.conversations.Config;
+
+public class RecordingActivity extends Activity implements View.OnClickListener {
+
+	private TextView mTimerTextView;
+	private Button mCancelButton;
+	private Button mStopButton;
+
+	private MediaRecorder mRecorder;
+	private long mStartTime = 0;
+
+	private int[] amplitudes = new int[100];
+	private int i = 0;
+
+	private Handler mHandler = new Handler();
+	private Runnable mTickExecutor = new Runnable() {
+		@Override
+		public void run() {
+			tick();
+			mHandler.postDelayed(mTickExecutor,100);
+		}
+	};
+	private File mOutputFile;
+
+	@Override
+	protected void onCreate(Bundle savedInstanceState) {
+		super.onCreate(savedInstanceState);
+		setContentView(R.layout.activity_recording);
+		this.mTimerTextView = (TextView) this.findViewById(R.id.timer);
+		this.mCancelButton = (Button) this.findViewById(R.id.cancel_button);
+		this.mCancelButton.setOnClickListener(this);
+		this.mStopButton = (Button) this.findViewById(R.id.share_button);
+		this.mStopButton.setOnClickListener(this);
+		getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
+	}
+
+	@Override
+	protected void onStart() {
+		super.onStart();
+		Log.d(Config.LOGTAG, "output: " + getOutputFile());
+		startRecording();
+	}
+
+	@Override
+	protected void onStop() {
+		super.onStop();
+		if (mRecorder != null) {
+			stopRecording(false);
+		}
+	}
+
+	private void startRecording() {
+		mRecorder = new MediaRecorder();
+		mRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
+		mRecorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
+		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
+			mRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AAC);
+			mRecorder.setAudioEncodingBitRate(48000);
+		} else {
+			mRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AAC);
+			mRecorder.setAudioEncodingBitRate(48000);
+		}
+		mRecorder.setAudioSamplingRate(48000);
+		mOutputFile = getOutputFile();
+		mOutputFile.getParentFile().mkdirs();
+		mRecorder.setOutputFile(mOutputFile.getAbsolutePath());
+
+		try {
+			mRecorder.prepare();
+			mRecorder.start();
+			mStartTime = SystemClock.elapsedRealtime();
+			mHandler.postDelayed(mTickExecutor, 100);
+			Log.d(Config.LOGTAG,"started recording to "+mOutputFile.getAbsolutePath());
+		} catch (IOException e) {
+			Log.e(Config.LOGTAG, "prepare() failed "+e.getMessage());
+		}
+	}
+
+	protected  void stopRecording(boolean saveFile) {
+		mRecorder.stop();
+		mRecorder.release();
+		mRecorder = null;
+		mStartTime = 0;
+		mHandler.removeCallbacks(mTickExecutor);
+		if (!saveFile && mOutputFile != null) {
+			mOutputFile.delete();
+		}
+	}
+
+	private File getOutputFile() {
+		SimpleDateFormat dateFormat = new SimpleDateFormat("yyyyMMdd_HHmmssSSS", Locale.US);
+		return new File(Environment.getExternalStorageDirectory().getAbsolutePath().toString()
+				+ "/Pix-Art Messenger/Recording"
+				+ dateFormat.format(new Date())
+				+ ".m4a");
+	}
+
+	private void tick() {
+		long time = (mStartTime < 0) ? 0 : (SystemClock.elapsedRealtime() - mStartTime);
+		int minutes = (int) (time / 60000);
+		int seconds = (int) (time / 1000) % 60;
+		int milliseconds = (int) (time / 100) % 10;
+		mTimerTextView.setText(minutes+":"+(seconds < 10 ? "0"+seconds : seconds)+"."+milliseconds);
+		if (mRecorder != null) {
+			amplitudes[i] = mRecorder.getMaxAmplitude();
+			//Log.d(Config.LOGTAG,"amplitude: "+(amplitudes[i] * 100 / 32767));
+			if (i >= amplitudes.length -1) {
+				i = 0;
+			} else {
+				++i;
+			}
+		}
+	}
+
+	@Override
+	public void onClick(View view) {
+		switch (view.getId()) {
+			case R.id.cancel_button:
+				stopRecording(false);
+				setResult(RESULT_CANCELED);
+				finish();
+				break;
+			case R.id.share_button:
+				stopRecording(true);
+				Uri uri = Uri.parse("file://"+mOutputFile.getAbsolutePath());
+				Intent scanIntent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);
+				scanIntent.setData(uri);
+				sendBroadcast(scanIntent);
+				setResult(Activity.RESULT_OK, new Intent().setData(uri));
+				finish();
+				break;
+		}
+	}
+}
\ No newline at end of file