s2: parts: Introduce Dirac preferences

Add a frontend for Dirac sound optimization settings.
Inject into sound preferences through settings IA.

Change-Id: I37f6e64fa440c43dbe238cc65af5f9b0bbd60d83
Signed-off-by: Joey <joey@lineageos.org>
Signed-off-by: Harsh Shandilya <msfjarvis@gmail.com>

parts/AndroidManifest.xml

@@ -41,6 +41,17 @@
             </intent-filter>
         </receiver>
 
+        <activity
+            android:name=".dirac.DiracActivity"
+            android:label="@string/dirac_title"
+            android:theme="@style/Theme.Main">
+            <intent-filter>
+                <action android:name="com.android.settings.action.IA_SETTINGS" />
+            </intent-filter>
+            <meta-data android:name="com.android.settings.category"
+                       android:value="com.android.settings.category.ia.sound" />
+        </activity>
+
         <service android:name=".doze.DozeService"
                  android:permission="LeEcoDozeService">
         </service>

parts/res/layout/dirac.xml

@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+/*
+** Copyright 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.
+*/
+-->
+
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+              android:orientation="vertical"
+              android:layout_height="match_parent"
+              android:layout_width="match_parent">
+
+    <include layout="@layout/switch_bar" />
+
+</LinearLayout>

parts/res/values/strings.xml

@@ -0,0 +1,34 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+     Copyright (C) 2018 The LineageOS 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.
+-->
+<resources>
+    <!-- Dirac settings -->
+    <string name="dirac_title">Dirac sound enhancer</string>
+    <string name="dirac_headset_title">Headset type</string>
+    <string name="dirac_preset_title">Sound preset</string>
+
+    <!-- TODO: change the string values accordingly -->
+    <string name="dirac_headset_0">Headset 0</string>
+    <string name="dirac_headset_1">Headset 1</string>
+    <string name="dirac_headset_2">Headset 2</string>
+    <string name="dirac_headset_3">Headset 3</string>
+
+    <!-- TODO: change the string values accordingly -->
+    <string name="dirac_preset_0">Preset 0</string>
+    <string name="dirac_preset_1">Preset 1</string>
+    <string name="dirac_preset_2">Preset 2</string>
+    <string name="dirac_preset_3">Preset 3</string>
+</resources>

parts/res/xml/dirac_settings.xml

@@ -0,0 +1,31 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+     Copyright (C) 2018 The LineageOS 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.
+-->
+<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <ListPreference
+        android:key="dirac_headset_pref"
+        android:defaultValue="0"
+        android:title="@string/dirac_headset_title"
+        android:summary="%s" />
+
+    <ListPreference
+        android:key="dirac_preset_pref"
+        android:defaultValue="0"
+        android:title="@string/dirac_preset_title"
+        android:summary="%s" />
+
+</PreferenceScreen>

parts/src/org/lineageos/settings/dirac/DiracActivity.java

@@ -0,0 +1,33 @@
+/*
+ * Copyright (C) 2018 The LineageOS 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 org.lineageos.settings.dirac;
+
+import android.os.Bundle;
+import android.preference.PreferenceActivity;
+
+public class DiracActivity extends PreferenceActivity {
+
+    private static final String TAG_DIRAC = "dirac";
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        getFragmentManager().beginTransaction().replace(android.R.id.content,
+                new DiracSettingsFragment(), TAG_DIRAC).commit();
+    }
+}

parts/src/org/lineageos/settings/dirac/DiracSettingsFragment.java

@@ -0,0 +1,156 @@
+/*
+ * Copyright (C) 2018 The LineageOS 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 org.lineageos.settings.dirac;
+
+import android.app.ActionBar;
+import android.app.Activity;
+import android.content.Context;
+import android.content.DialogInterface;
+import android.content.SharedPreferences;
+import android.os.Bundle;
+import android.support.v14.preference.PreferenceFragment;
+import android.support.v14.preference.SwitchPreference;
+import android.support.v7.preference.ListPreference;
+import android.support.v7.preference.Preference;
+import android.support.v7.preference.PreferenceCategory;
+import android.support.v7.preference.Preference.OnPreferenceChangeListener;
+import android.view.LayoutInflater;
+import android.view.MenuItem;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.CompoundButton;
+import android.widget.Switch;
+import android.widget.TextView;
+
+import org.lineageos.settings.R;
+
+public class DiracSettingsFragment extends PreferenceFragment implements
+        OnPreferenceChangeListener, CompoundButton.OnCheckedChangeListener {
+
+    private static final String PREF_HEADSET = "dirac_headset_pref";
+    private static final String PREF_PRESET = "dirac_preset_pref";
+
+    private TextView mTextView;
+    private View mSwitchBar;
+
+    private ListPreference mHeadsetType;
+    private ListPreference mPreset;
+
+    @Override
+    public void onCreatePreferences(Bundle savedInstanceState, String rootKey) {
+        addPreferencesFromResource(R.xml.dirac_settings);
+        final ActionBar actionBar = getActivity().getActionBar();
+        actionBar.setDisplayHomeAsUpEnabled(true);
+
+        boolean enhancerEnabled = DiracUtils.isDiracEnabled(getActivity());
+
+        mHeadsetType = (ListPreference) findPreference(PREF_HEADSET);
+        mHeadsetType.setOnPreferenceChangeListener(this);
+        mHeadsetType.setEnabled(enhancerEnabled);
+        // TODO: adapt to real values
+        String[] headsetEntries = new String[] {
+            getString(R.string.dirac_headset_0),
+            getString(R.string.dirac_headset_1),
+            getString(R.string.dirac_headset_2),
+            getString(R.string.dirac_headset_3)
+        };
+        String[] headsetValues = new String[] {
+            "0", "1", "2", "3"
+        };
+        mHeadsetType.setEntries(headsetEntries);
+        mHeadsetType.setEntryValues(headsetValues);
+
+        mPreset = (ListPreference) findPreference(PREF_PRESET);
+        mPreset.setOnPreferenceChangeListener(this);
+        mPreset.setEnabled(enhancerEnabled);
+        // TODO: adapt to real values
+        String[] presetEntries = new String[] {
+            getString(R.string.dirac_preset_0),
+            getString(R.string.dirac_preset_1),
+            getString(R.string.dirac_preset_2),
+            getString(R.string.dirac_preset_3)
+        };
+        String[] presetValues = new String[] {
+            "0", "1", "2", "3"
+        };
+        mPreset.setEntries(presetEntries);
+        mPreset.setEntryValues(presetValues);
+    }
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container,
+                             Bundle savedInstanceState) {
+        final View view = LayoutInflater.from(getContext()).inflate(R.layout.dirac,
+                container, false);
+        ((ViewGroup) view).addView(super.onCreateView(inflater, container, savedInstanceState));
+        return view;
+    }
+
+    @Override
+    public void onViewCreated(View view, Bundle savedInstanceState) {
+        super.onViewCreated(view, savedInstanceState);
+
+        boolean enhancerEnabled = DiracUtils.isDiracEnabled(getActivity());
+
+        mTextView = view.findViewById(R.id.switch_text);
+        mTextView.setText(getString(enhancerEnabled ?
+                R.string.switch_bar_on : R.string.switch_bar_off));
+
+        mSwitchBar = view.findViewById(R.id.switch_bar);
+        Switch switchWidget = mSwitchBar.findViewById(android.R.id.switch_widget);
+        switchWidget.setChecked(enhancerEnabled);
+        switchWidget.setOnCheckedChangeListener(this);
+        mSwitchBar.setActivated(enhancerEnabled);
+        mSwitchBar.setOnClickListener(v -> {
+            switchWidget.setChecked(!switchWidget.isChecked());
+            mSwitchBar.setActivated(switchWidget.isChecked());
+        });
+    }
+
+    @Override
+    public boolean onPreferenceChange(Preference preference, Object newValue) {
+        switch (preference.getKey()) {
+            case PREF_HEADSET:
+                // TODO: on Headset changed
+                return true;
+            case PREF_PRESET:
+                // TODO: on Preset changed
+                return true;
+            default: return false;
+        }
+    }
+
+    @Override
+    public void onCheckedChanged(CompoundButton compoundButton, boolean isChecked) {
+        // TODO: Toggle enhancer
+
+        mTextView.setText(getString(isChecked ? R.string.switch_bar_on : R.string.switch_bar_off));
+        mSwitchBar.setActivated(isChecked);
+
+        mHeadsetType.setEnabled(isChecked);
+        mPreset.setEnabled(isChecked);
+    }
+
+    @Override
+    public boolean onOptionsItemSelected(MenuItem item) {
+        if (item.getItemId() == android.R.id.home) {
+            getActivity().onBackPressed();
+            return true;
+        }
+        return false;
+    }
+}

parts/src/org/lineageos/settings/dirac/DiracUtils.java

@@ -0,0 +1,26 @@
+/*
+ * Copyright (C) 2018 The LineageOS 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 org.lineageos.settings.dirac;
+
+import android.content.Context;
+
+public final class DiracUtils {
+
+    protected static boolean isDiracEnabled(Context context) {
+        return false;
+    }
+}