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/*
* Copyright (C) 2014 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.server.hdmi;
import android.annotation.Nullable;
import android.hardware.hdmi.HdmiControlManager;
import android.hardware.hdmi.IHdmiControlCallback;
import android.os.RemoteException;
import android.util.Slog;
import com.android.server.hdmi.HdmiControlService.SendMessageCallback;
/**
* Action to update audio status (volume or mute) of audio amplifier
*/
final class SystemAudioStatusAction extends HdmiCecFeatureAction {
private static final String TAG = "SystemAudioStatusAction";
// State that waits for <ReportAudioStatus>.
private static final int STATE_WAIT_FOR_REPORT_AUDIO_STATUS = 1;
private final int mAvrAddress;
@Nullable private final IHdmiControlCallback mCallback;
SystemAudioStatusAction(HdmiCecLocalDevice source, int avrAddress,
IHdmiControlCallback callback) {
super(source);
mAvrAddress = avrAddress;
mCallback = callback;
}
@Override
boolean start() {
mState = STATE_WAIT_FOR_REPORT_AUDIO_STATUS;
addTimer(mState, HdmiConfig.TIMEOUT_MS);
sendGiveAudioStatus();
return true;
}
private void sendGiveAudioStatus() {
sendCommand(HdmiCecMessageBuilder.buildGiveAudioStatus(getSourceAddress(), mAvrAddress),
new SendMessageCallback() {
@Override
public void onSendCompleted(int error) {
if (error != Constants.SEND_RESULT_SUCCESS) {
handleSendGiveAudioStatusFailure();
}
}
});
}
private void handleSendGiveAudioStatusFailure() {
// Inform to all application that the audio status (volumn, mute) of
// the audio amplifier is unknown.
tv().setAudioStatus(false, Constants.UNKNOWN_VOLUME);
int uiCommand = tv().isSystemAudioActivated()
? HdmiCecKeycode.CEC_KEYCODE_RESTORE_VOLUME_FUNCTION // SystemAudioMode: ON
: HdmiCecKeycode.CEC_KEYCODE_MUTE_FUNCTION; // SystemAudioMode: OFF
sendUserControlPressedAndReleased(mAvrAddress, uiCommand);
// Still return SUCCESS to callback.
finishWithCallback(HdmiControlManager.RESULT_SUCCESS);
}
@Override
boolean processCommand(HdmiCecMessage cmd) {
if (mState != STATE_WAIT_FOR_REPORT_AUDIO_STATUS) {
return false;
}
switch (cmd.getOpcode()) {
case Constants.MESSAGE_REPORT_AUDIO_STATUS:
handleReportAudioStatus(cmd);
return true;
}
return false;
}
private void handleReportAudioStatus(HdmiCecMessage cmd) {
byte[] params = cmd.getParams();
boolean mute = (params[0] & 0x80) == 0x80;
int volume = params[0] & 0x7F;
tv().setAudioStatus(mute, volume);
if (!(tv().isSystemAudioActivated() ^ mute)) {
// Toggle AVR's mute status to match with the system audio status.
sendUserControlPressedAndReleased(mAvrAddress, HdmiCecKeycode.CEC_KEYCODE_MUTE);
}
finishWithCallback(HdmiControlManager.RESULT_SUCCESS);
}
private void finishWithCallback(int returnCode) {
if (mCallback != null) {
try {
mCallback.onComplete(returnCode);
} catch (RemoteException e) {
Slog.e(TAG, "Failed to invoke callback.", e);
}
}
finish();
}
@Override
void handleTimerEvent(int state) {
if (mState != state) {
return;
}
handleSendGiveAudioStatusFailure();
}
}
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