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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.services.callrecorder;
import android.app.Service;
import android.content.Context;
import android.content.Intent;
import android.media.MediaRecorder;
import android.os.IBinder;
import android.os.RemoteException;
import android.os.SystemProperties;
import android.provider.Settings;
import android.util.Log;
import com.android.services.callrecorder.common.CallRecording;
import com.android.services.callrecorder.common.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 static enum RecorderState {
IDLE,
RECORDING
};
private MediaRecorder mMediaRecorder = null;
private RecorderState mState = RecorderState.IDLE;
private CallRecording mCurrentRecording = null;
private static final String AUDIO_SOURCE_PROPERTY = "persist.call_recording.src";
private SimpleDateFormat DATE_FORMAT = new SimpleDateFormat("yyMMdd_HHmmssSSS");
private int mDefaultEncoder;
private final ICallRecorderService.Stub mBinder = new ICallRecorderService.Stub() {
@Override
public CallRecording stopRecording() {
if (getState() == RecorderState.RECORDING) {
stopRecordingInternal();
return mCurrentRecording;
}
return null;
}
@Override
public boolean startRecording(String phoneNumber, long creationTime)
throws RemoteException {
String fileName = generateFilename(phoneNumber);
mCurrentRecording = new CallRecording(phoneNumber, creationTime,
fileName, System.currentTimeMillis());
return startRecordingInternal(mCurrentRecording.getFile());
}
@Override
public boolean isRecording() throws RemoteException {
return getState() == RecorderState.RECORDING;
}
@Override
public CallRecording getActiveRecording() throws RemoteException {
return mCurrentRecording;
}
};
@Override
public void onCreate() {
if (DBG) Log.d(TAG, "Creating CallRecorderService");
mDefaultEncoder = getResources().getInteger(R.integer.call_recording_audio_encoder);
}
@Override
public IBinder onBind(Intent intent) {
return mBinder;
}
private int getAudioSource() {
int defaultValue = getResources().getInteger(R.integer.call_recording_audio_source);
return SystemProperties.getInt(AUDIO_SOURCE_PROPERTY, defaultValue);
}
private int getAudioFormat() {
int formatValue = Settings.System.getInt(
getContentResolver(), Settings.System.CALL_RECORDING_FORMAT, mDefaultEncoder);
if (formatValue == 0){
return MediaRecorder.OutputFormat.AMR_WB;
} else {
return MediaRecorder.OutputFormat.MPEG_4;
}
}
private int getAudioEncoder() {
int formatValue = Settings.System.getInt(
getContentResolver(), Settings.System.CALL_RECORDING_FORMAT, mDefaultEncoder);
if (formatValue == 0){
return MediaRecorder.AudioEncoder.AMR_WB;
} else {
return MediaRecorder.AudioEncoder.HE_AAC;
}
}
private synchronized boolean startRecordingInternal(File file) {
if (mMediaRecorder != null) {
if (DBG) {
Log.d(TAG, "Start called with recording in progress, stopping current recording");
}
stopRecordingInternal();
}
if (DBG) Log.d(TAG, "Starting recording");
mMediaRecorder = new MediaRecorder();
try {
int audioSource = getAudioSource();
if (DBG) Log.d(TAG, "Creating media recorder with audio source " + audioSource);
mMediaRecorder.setAudioSource(audioSource);
mMediaRecorder.setOutputFormat(getAudioFormat());
mMediaRecorder.setAudioEncoder(getAudioEncoder());
} catch (IllegalStateException e) {
Log.w(TAG, "Error initializing media recorder", e);
return false;
}
file.getParentFile().mkdirs();
String outputPath = file.getAbsolutePath();
if (DBG) Log.d(TAG, "Writing output to file " + outputPath);
try {
mMediaRecorder.setOutputFile(outputPath);
mMediaRecorder.prepare();
mMediaRecorder.start();
mState = RecorderState.RECORDING;
return true;
} catch (IOException e) {
Log.w(TAG, "Could not start recording for file " + outputPath, e);
} catch (IllegalStateException e) {
Log.w(TAG, "Could not start recording for file " + outputPath, e);
} catch (RuntimeException e) {
// only catch exceptions thrown by the MediaRecorder JNI code
if (e.getMessage().indexOf("start failed") >= 0) {
Log.w(TAG, "Could not start recording for file " + outputPath, e);
} else {
throw e;
}
}
mMediaRecorder.reset();
mMediaRecorder.release();
mMediaRecorder = null;
return false;
}
private synchronized void stopRecordingInternal() {
if (DBG) Log.d(TAG, "Stopping current recording");
if (mMediaRecorder != null) {
try {
if (getState() == RecorderState.RECORDING) {
mMediaRecorder.stop();
mMediaRecorder.reset();
mMediaRecorder.release();
}
} catch (IllegalStateException e) {
Log.e(TAG, "Exception closing media recorder", e);
}
mMediaRecorder = null;
mState = RecorderState.IDLE;
}
}
@Override
public void onDestroy() {
super.onDestroy();
if (DBG) Log.d(TAG, "Destroying CallRecorderService");
}
private synchronized RecorderState getState() {
return mState;
}
private String generateFilename(String number) {
String timestamp = DATE_FORMAT.format(new Date());
int audioFormat = getAudioFormat();
if (audioFormat == MediaRecorder.OutputFormat.AMR_WB){
return number + "_" + timestamp + ".amr";
} else {
return number + "_" + timestamp + ".m4a ";
}
}
public static boolean isEnabled(Context context) {
return context.getResources().getBoolean(R.bool.call_recording_enabled);
}
}
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