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/*
* Copyright (C) 2014 The CyanogenMod Project
*
* 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.
*/
package com.android.dialer.callrecord.impl;
import android.app.Service;
import android.content.ContentUris;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.pm.PackageManager;
import android.media.MediaRecorder;
import android.net.Uri;
import android.os.IBinder;
import android.os.ParcelFileDescriptor;
import android.os.RemoteException;
import android.provider.MediaStore;
import android.text.TextUtils;
import android.provider.Settings;
import android.util.Log;
import com.android.dialer.callrecord.CallRecording;
import com.android.dialer.callrecord.ICallRecorderService;
import java.io.File;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;
import com.android.dialer.R;
public class CallRecorderService extends Service {
private static final String TAG = "CallRecorderService";
private static final boolean DBG = false;
private MediaRecorder mMediaRecorder = null;
private CallRecording mCurrentRecording = null;
private SimpleDateFormat DATE_FORMAT = new SimpleDateFormat("yyMMdd_HHmmssSSS");
private final ICallRecorderService.Stub mBinder = new ICallRecorderService.Stub() {
@Override
public CallRecording stopRecording() {
return stopRecordingInternal();
}
@Override
public boolean startRecording(String phoneNumber, long creationTime) throws RemoteException {
return startRecordingInternal(phoneNumber, creationTime);
}
@Override
public boolean isRecording() throws RemoteException {
return mMediaRecorder != null;
}
@Override
public CallRecording getActiveRecording() throws RemoteException {
return mCurrentRecording;
}
};
@Override
public void onCreate() {
if (DBG) Log.d(TAG, "Creating CallRecorderService");
}
@Override
public IBinder onBind(Intent intent) {
return mBinder;
}
private int getAudioSource() {
return getResources().getInteger(R.integer.call_recording_audio_source);
}
private int getAudioFormatChoice() {
// This replicates PreferenceManager.getDefaultSharedPreferences, except
// that we need multi process preferences, as the pref is written in a separate
// process (com.android.dialer vs. com.android.incallui)
final String prefName = getPackageName() + "_preferences";
final SharedPreferences prefs = getSharedPreferences(prefName, MODE_MULTI_PROCESS);
try {
String value = prefs.getString(getString(R.string.call_recording_format_key), null);
if (value != null) {
return Integer.parseInt(value);
}
} catch (NumberFormatException e) {
// ignore and fall through
}
return 0;
}
private synchronized boolean startRecordingInternal(String phoneNumber, long creationTime) {
if (mMediaRecorder != null) {
if (DBG) {
Log.d(TAG, "Start called with recording in progress, stopping current recording");
}
stopRecordingInternal();
}
if (checkSelfPermission(android.Manifest.permission.RECORD_AUDIO)
!= PackageManager.PERMISSION_GRANTED) {
Log.w(TAG, "Record audio permission not granted, can't record call");
return false;
}
if (DBG) Log.d(TAG, "Starting recording");
mMediaRecorder = new MediaRecorder();
try {
int audioSource = getAudioSource();
int formatChoice = getAudioFormatChoice();
if (DBG) Log.d(TAG, "Creating media recorder with audio source " + audioSource);
mMediaRecorder.setAudioSource(audioSource);
mMediaRecorder.setOutputFormat(formatChoice == 0
? MediaRecorder.OutputFormat.AMR_WB : MediaRecorder.OutputFormat.MPEG_4);
mMediaRecorder.setAudioEncoder(formatChoice == 0
? MediaRecorder.AudioEncoder.AMR_WB : MediaRecorder.AudioEncoder.AAC);
} catch (IllegalStateException e) {
Log.w(TAG, "Error initializing media recorder", e);
mMediaRecorder.reset();
mMediaRecorder.release();
mMediaRecorder = null;
return false;
}
String fileName = generateFilename(phoneNumber);
Uri uri = getContentResolver().insert(MediaStore.Audio.Media.EXTERNAL_CONTENT_URI,
CallRecording.generateMediaInsertValues(fileName, creationTime));
try {
ParcelFileDescriptor pfd = getContentResolver().openFileDescriptor(uri, "w");
if (pfd == null) {
throw new IOException("Opening file for URI " + uri + " failed");
}
mMediaRecorder.setOutputFile(pfd.getFileDescriptor());
mMediaRecorder.prepare();
mMediaRecorder.start();
long mediaId = Long.parseLong(uri.getLastPathSegment());
mCurrentRecording = new CallRecording(phoneNumber, creationTime,
fileName, System.currentTimeMillis(), mediaId);
return true;
} catch (IOException | IllegalStateException e) {
Log.w(TAG, "Could not start recording", e);
getContentResolver().delete(uri, null, null);
} catch (RuntimeException e) {
getContentResolver().delete(uri, null, null);
// only catch exceptions thrown by the MediaRecorder JNI code
if (e.getMessage().indexOf("start failed") >= 0) {
Log.w(TAG, "Could not start recording", e);
} else {
throw e;
}
}
mMediaRecorder.reset();
mMediaRecorder.release();
mMediaRecorder = null;
return false;
}
private synchronized CallRecording stopRecordingInternal() {
CallRecording recording = mCurrentRecording;
if (DBG) Log.d(TAG, "Stopping current recording");
if (mMediaRecorder != null) {
try {
mMediaRecorder.stop();
mMediaRecorder.reset();
mMediaRecorder.release();
} catch (IllegalStateException e) {
Log.e(TAG, "Exception closing media recorder", e);
}
Uri uri = ContentUris.withAppendedId(
MediaStore.Audio.Media.EXTERNAL_CONTENT_URI, mCurrentRecording.mediaId);
getContentResolver().update(uri, CallRecording.generateCompletedValues(), null, null);
mMediaRecorder = null;
mCurrentRecording = null;
}
return recording;
}
@Override
public void onDestroy() {
super.onDestroy();
if (DBG) Log.d(TAG, "Destroying CallRecorderService");
}
private String generateFilename(String number) {
String timestamp = DATE_FORMAT.format(new Date());
if (TextUtils.isEmpty(number)) {
number = "unknown";
}
int formatChoice = getAudioFormatChoice();
String extension = formatChoice == 0 ? ".amr" : ".m4a";
return number + "_" + timestamp + extension;
}
public static boolean isEnabled(Context context) {
return context.getResources().getBoolean(R.bool.call_recording_enabled);
}
}
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