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/**
* Copyright (C) 2022 The Android Open Source 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.telephony.imsmedia;
import android.hardware.radio.ims.media.IImsMedia;
import android.hardware.radio.ims.media.IImsMediaListener;
import android.hardware.radio.ims.media.IImsMediaSession;
import android.hardware.radio.ims.media.LocalEndPoint;
import android.hardware.radio.ims.media.RtpConfig;
import android.os.RemoteException;
import android.os.ServiceManager;
import android.telephony.imsmedia.AudioConfig;
import android.util.Log;
import com.android.telephony.imsmedia.Utils.OpenSessionParams;
/**
* This connects to IImsMedia HAL and invokes all the HAL APIs
*/
public class AudioOffloadService {
private static final String LOG_TAG = "AudioOffloadService";
private IImsMedia mImsMedia;
private ImsMediaController.OpenSessionCallback mMediaControllerCallback;
private static AudioOffloadService sInstance;
private ImsMediaListener listener;
private AudioOffloadService() {
listener = new ImsMediaListener();
initMediaHal();
}
public static AudioOffloadService getInstance() {
if (sInstance == null) {
sInstance = new AudioOffloadService();
}
return sInstance;
}
// Initializes the HAL
private synchronized void initMediaHal() {
Log.d(LOG_TAG, "initMediaHal");
try {
mImsMedia = IImsMedia.Stub.asInterface(ServiceManager.waitForDeclaredService(
IImsMedia.DESCRIPTOR + "/default"));
mImsMedia.setListener(listener);
} catch (Exception e) {
Log.e(LOG_TAG, "initMediaHal: Exception: " + e);
return;
}
}
public IImsMedia getIImsMedia() {
if (mImsMedia != null) {
return mImsMedia;
}
// Reconnect to ImsMedia HAL
initMediaHal();
return mImsMedia;
}
public void openSession(int sessionId, OpenSessionParams sessionParams) {
final LocalEndPoint lep = new LocalEndPoint();
final RtpConfig rtpConfig = Utils.convertToRtpConfig(
(AudioConfig)sessionParams.getRtpConfig());
/**
* Store the reference to the media MediaControllerCallback so that it can
* be used for notifying the onOpenSuccess() or onOpenFailure() callbacks.
*/
mMediaControllerCallback = sessionParams.getCallback();
/** Create LocalEndPoint from {@link OpenSessionParams} */
lep.rtpFd = sessionParams.getRtpFd();
lep.rtcpFd = sessionParams.getRtcpFd();
lep.modemId = 1; // TODO : Use the logical modem ID
try {
getIImsMedia().openSession(sessionId, lep, rtpConfig);
} catch (RemoteException e) {
Log.e(LOG_TAG, "openSession: " + e);
}
}
public void closeSession(int sessionId) {
try {
getIImsMedia().closeSession(sessionId);
} catch (RemoteException e) {
Log.e(LOG_TAG, "closeSession: " + e);
}
}
private class ImsMediaListener extends IImsMediaListener.Stub {
@Override
public String getInterfaceHash() {
return IImsMediaListener.HASH;
}
@Override
public int getInterfaceVersion() {
return IImsMediaListener.VERSION;
}
@Override
public void onOpenSessionSuccess(int sessionId, IImsMediaSession session) {
mMediaControllerCallback.onOpenSessionSuccess(sessionId, session);
}
@Override
public void onOpenSessionFailure(int sessionId, int error) {
mMediaControllerCallback.onOpenSessionFailure(sessionId, error);
}
@Override
public void onSessionClosed(int sessionId) {
mMediaControllerCallback.onSessionClosed(sessionId);
}
}
}
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