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/* Copyright (c) 2015, The Linux Foundation. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
* * Neither the name of The Linux Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package com.android.incallui;
import android.telecom.CallAudioState;
import android.telecom.VideoProfile;
/**
* This class implements QTI audio routing policy for upgrade/downgrade/merge call use cases
* based on the audio policy below.
*
* Audio policy for any user initiated action like making a video call, accepting an upgrade
* request or sending an upgrade/downgrade request is as follows : If any of the above user actions
* indicate a transition to a video call, we route audio to SPEAKER. If any of the above user
* actions indicate a voice call, we route to EARPIECE. For all other non-user initiated actions
* like an incoming downgrade request, we don't change the audio path and respect user's choice.
* For merge calls, we route to SPEAKER only if one of the calls being merged is a video call.
*
* Audio path routing for outgoing calls, incoming calls, add call and call waiting are handled
* in Telecom layer. Same audio policy is followed for those as well. Any user initiated action
* indicating a origin/acceptance of video call routes audio to SPEAKER or to EARPIECE for voice
* calls.
*/
public class InCallAudioManager {
private static InCallAudioManager sInCallAudioManager;
private final static String LOG_TAG = "InCallAudioManager";
/**
* Private constructor. Must use getInstance() to get this singleton.
*/
private InCallAudioManager() {
}
/**
* This method returns a singleton instance of {@class InCallAudioManager}
*/
public static synchronized InCallAudioManager getInstance() {
if (sInCallAudioManager == null) {
sInCallAudioManager = new InCallAudioManager();
}
return sInCallAudioManager;
}
/**
* Called when user sends an upgrade/downgrade request. Route audio to speaker if the user
* sends an upgrade request to Video (bidirectional, transmit or receive) otherwise route
* audio to earpiece if it's a downgrade request.
*/
public void onModifyCallClicked(final Call call,final int newVideoState) {
Log.v(this, "onModifyCallClicked: Call = " + call + "new video state = " +
newVideoState);
if (!VideoProfile.isVideo(newVideoState)) {
enableEarpiece();
} else if (canEnableSpeaker(call.getVideoState(),newVideoState)) {
enableSpeaker();
}
}
/**
* Called when user accepts an upgrade request. Route audio to speaker if the user accepts an
* upgrade request to Video (bidirectional, transmit or receive)
*/
public void onAcceptUpgradeRequest(final Call call, final int videoState) {
Log.v(this, "onAcceptUpgradeRequest: Call = " + call + "video state = " +
videoState);
if (canEnableSpeaker(call.getVideoState(), videoState)) {
enableSpeaker();
}
}
/**
* Called when user clicks on merge calls from the UI. Route audio to speaker if one of the
* calls being merged is a video call.
*/
public void onMergeClicked() {
Log.v(this, "onMergeClicked");
if (CallUtils.isVideoCall(CallList.getInstance().getBackgroundCall()) ||
CallUtils.isVideoCall(CallList.getInstance().getActiveCall())) {
enableSpeaker();
}
}
/**
* Determines if the speakerphone should be automatically enabled for the call. Speakerphone
* should be enabled if the call is a video call and if the adb property
* "persist.radio.call.audio.output" is true.
*
* @param videoState The video state of the call.
* @return {@code true} if the speakerphone should be enabled.
*/
private static boolean canEnableSpeaker(int oldVideoState, int newVideoState) {
return !VideoProfile.isVideo(oldVideoState) &&
VideoProfile.isVideo(newVideoState) && isSpeakerEnabledForVideoCalls();
}
/**
* Determines if the speakerphone should be automatically enabled for video calls.
*
* @return {@code true} if the speakerphone should automatically be enabled.
*/
private static boolean isSpeakerEnabledForVideoCalls() {
// TODO: we can't access adb properties from InCallUI. Need to refactor this.
return true;
}
/**
* Routes the call to the earpiece if audio is not being already routed to Earpiece and if
* bluetooth or wired headset is not connected.
*/
private static void enableEarpiece() {
final TelecomAdapter telecomAdapter = TelecomAdapter.getInstance();
if (telecomAdapter == null) {
Log.e(LOG_TAG, "enableEarpiece: TelecomAdapter is null");
return;
}
final int currentAudioMode = AudioModeProvider.getInstance().getAudioMode();
Log.v(LOG_TAG, "enableEarpiece: Current audio mode is - " + currentAudioMode);
if (!QtiCallUtils.isEnabled(CallAudioState.ROUTE_EARPIECE |
CallAudioState.ROUTE_BLUETOOTH | CallAudioState.ROUTE_WIRED_HEADSET,
currentAudioMode)) {
Log.v(LOG_TAG, "enableEarpiece: Set audio route to earpiece");
telecomAdapter.setAudioRoute(CallAudioState.ROUTE_EARPIECE);
}
}
/**
* Routes the call to the speaker if audio is not being already routed to Speaker and if
* bluetooth or wired headset is not connected.
*/
private static void enableSpeaker() {
final TelecomAdapter telecomAdapter = TelecomAdapter.getInstance();
if (telecomAdapter == null) {
Log.e(LOG_TAG, "enableSpeaker: TelecomAdapter is null");
return;
}
final int currentAudioMode = AudioModeProvider.getInstance().getAudioMode();
Log.v(LOG_TAG, "enableSpeaker: Current audio mode is - " + currentAudioMode);
if(!QtiCallUtils.isEnabled(CallAudioState.ROUTE_SPEAKER |
CallAudioState.ROUTE_BLUETOOTH | CallAudioState.ROUTE_WIRED_HEADSET,
currentAudioMode)) {
Log.v(LOG_TAG, "enableSpeaker: Set audio route to speaker");
telecomAdapter.setAudioRoute(CallAudioState.ROUTE_SPEAKER);
}
}
}
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