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/*
* Copyright (C) 2018 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.tv.settings.device.displaysound;
import android.annotation.NonNull;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.media.AudioManager;
import android.provider.Settings;
import android.text.TextUtils;
import android.util.Log;
import androidx.preference.Preference;
import androidx.preference.SwitchPreference;
import com.android.settingslib.core.AbstractPreferenceController;
import com.android.tv.settings.R;
import java.util.Arrays;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
/**
* Controller for the surround sound switch preferences.
*/
public class SoundFormatPreferenceController extends AbstractPreferenceController {
private static final String TAG = "SoundFormatController";
private int mFormatId;
private Map<Integer, Boolean> mFormats;
private List<Integer> mReportedFormats;
private AudioManager mAudioManager;
public SoundFormatPreferenceController(
Context context,
int formatId,
AudioManager audioManager,
@NonNull Map<Integer, Boolean> formats,
@NonNull List<Integer> reportedFormats) {
super(context);
mFormatId = formatId;
mAudioManager = audioManager;
mFormats = formats;
mReportedFormats = reportedFormats;
}
@Override
public boolean isAvailable() {
return true;
}
@Override
public String getPreferenceKey() {
return AdvancedVolumeFragment.KEY_SURROUND_SOUND_FORMAT_PREFIX + mFormatId;
}
@Override
public void updateState(Preference preference) {
super.updateState(preference);
if (preference.getKey().equals(getPreferenceKey())) {
preference.setEnabled(getFormatPreferencesEnabledState());
((SwitchPreference) preference).setChecked(getFormatPreferenceCheckedState());
}
}
@Override
public boolean handlePreferenceTreeClick(Preference preference) {
if (preference.getKey().equals(getPreferenceKey())) {
onPreferenceClicked((SwitchPreference) preference);
}
return super.handlePreferenceTreeClick(preference);
}
/**
* @return checked state of a surround sound format switch based on passthrough setting and
* audio manager state for the format.
*/
private boolean getFormatPreferenceCheckedState() {
switch (AdvancedVolumeFragment.getSurroundPassthroughSetting(mContext)) {
case AdvancedVolumeFragment.KEY_SURROUND_SOUND_AUTO:
return isReportedFormat();
case AdvancedVolumeFragment.KEY_SURROUND_SOUND_MANUAL:
return getEnabledFormats().contains(mFormatId);
default:
return false;
}
}
/** @return true if the format checkboxes should be enabled, i.e. in manual mode. */
private boolean getFormatPreferencesEnabledState() {
return AdvancedVolumeFragment.getSurroundPassthroughSetting(mContext)
== AdvancedVolumeFragment.KEY_SURROUND_SOUND_MANUAL;
}
/** @return the formats that are enabled in global settings */
HashSet<Integer> getEnabledFormats() {
HashSet<Integer> formats = new HashSet<>();
String enabledFormats = Settings.Global.getString(mContext.getContentResolver(),
Settings.Global.ENCODED_SURROUND_OUTPUT_ENABLED_FORMATS);
if (enabledFormats == null) {
// Starting with Android P passthrough setting ALWAYS has been replaced with MANUAL.
// In that case all formats will be enabled when in MANUAL mode.
formats.addAll(mFormats.keySet());
} else {
try {
Arrays.stream(TextUtils.split(enabledFormats, ",")).mapToInt(Integer::parseInt)
.forEach(formats::add);
} catch (NumberFormatException e) {
Log.w(TAG, "ENCODED_SURROUND_OUTPUT_ENABLED_FORMATS misformatted.", e);
}
}
return formats;
}
/**
* Handler for when this particular format preference is clicked.
*/
private void onPreferenceClicked(SwitchPreference preference) {
final boolean enabled = preference.isChecked();
// In case of enabling unsupported format, show a warning dialog
if (!isReportedFormat() && enabled) {
showWarningDialogOnEnableUnsupportedFormat(preference);
} else {
mAudioManager.setSurroundFormatEnabled(mFormatId, enabled);
}
}
/** @return true if the given format is reported by the device. */
private boolean isReportedFormat() {
return mReportedFormats.contains(mFormatId);
}
private void showWarningDialogOnEnableUnsupportedFormat(SwitchPreference preference) {
new AlertDialog.Builder(mContext)
.setTitle(R.string.surround_sound_enable_unsupported_dialog_title)
.setMessage(R.string.surround_sound_enable_unsupported_dialog_desc)
.setPositiveButton(
R.string.surround_sound_enable_unsupported_dialog_ok,
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
mAudioManager.setSurroundFormatEnabled(mFormatId, true);
dialog.dismiss();
}
})
.setNegativeButton(
R.string.surround_sound_enable_unsupported_dialog_cancel,
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
preference.setChecked(false);
dialog.dismiss();
}
})
.show();
}
}
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