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      1 /*
      2  * Copyright (C) 2013 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.android.camera.app;
     18 
     19 import android.content.Context;
     20 import android.util.SparseArray;
     21 
     22 import com.android.camera.debug.Log;
     23 import com.android.camera.settings.Keys;
     24 import com.android.camera.settings.SettingsManager;
     25 import com.android.camera2.R;
     26 
     27 import java.util.ArrayList;
     28 import java.util.List;
     29 
     30 /**
     31  * A class which implements {@link com.android.camera.app.ModuleManager}.
     32  */
     33 public class ModuleManagerImpl implements ModuleManager {
     34     private static final Log.Tag TAG = new Log.Tag("ModuleManagerImpl");
     35 
     36     private final SparseArray<ModuleAgent> mRegisteredModuleAgents = new
     37             SparseArray<ModuleAgent>(2);
     38     private int mDefaultModuleId = MODULE_INDEX_NONE;
     39 
     40     public ModuleManagerImpl() {
     41     }
     42 
     43     @Override
     44     public void registerModule(ModuleAgent agent) {
     45         if (agent == null) {
     46             throw new NullPointerException("Registering a null ModuleAgent.");
     47         }
     48         final int moduleId = agent.getModuleId();
     49         if (moduleId == MODULE_INDEX_NONE) {
     50             throw new IllegalArgumentException(
     51                     "ModuleManager: The module ID can not be " + "MODULE_INDEX_NONE");
     52         }
     53         if (mRegisteredModuleAgents.get(moduleId) != null) {
     54             throw new IllegalArgumentException("Module ID is registered already:" + moduleId);
     55         }
     56         mRegisteredModuleAgents.put(moduleId, agent);
     57     }
     58 
     59     @Override
     60     public boolean unregisterModule(int moduleId) {
     61         if (mRegisteredModuleAgents.get(moduleId) == null) {
     62             return false;
     63         }
     64         mRegisteredModuleAgents.delete(moduleId);
     65         if (moduleId == mDefaultModuleId) {
     66             mDefaultModuleId = -1;
     67         }
     68         return true;
     69     }
     70 
     71     @Override
     72     public List<ModuleAgent> getRegisteredModuleAgents() {
     73         List<ModuleAgent> agents = new ArrayList<ModuleAgent>();
     74         for (int i = 0; i < mRegisteredModuleAgents.size(); i++) {
     75             agents.add(mRegisteredModuleAgents.valueAt(i));
     76         }
     77         return agents;
     78     }
     79 
     80     @Override
     81     public List<Integer> getSupportedModeIndexList() {
     82         List<Integer> modeIndexList = new ArrayList<Integer>();
     83         for (int i = 0; i < mRegisteredModuleAgents.size(); i++) {
     84             modeIndexList.add(mRegisteredModuleAgents.keyAt(i));
     85         }
     86         return modeIndexList;
     87     }
     88 
     89     @Override
     90     public boolean setDefaultModuleIndex(int moduleId) {
     91         if (mRegisteredModuleAgents.get(moduleId) != null) {
     92             mDefaultModuleId = moduleId;
     93             return true;
     94         }
     95         return false;
     96     }
     97 
     98     @Override
     99     public int getDefaultModuleIndex() {
    100         return mDefaultModuleId;
    101     }
    102 
    103     @Override
    104     public ModuleAgent getModuleAgent(int moduleId) {
    105         ModuleAgent agent = mRegisteredModuleAgents.get(moduleId);
    106         if (agent == null) {
    107             return mRegisteredModuleAgents.get(mDefaultModuleId);
    108         }
    109         return agent;
    110     }
    111 
    112     @Override
    113     public int getQuickSwitchToModuleId(int moduleId, SettingsManager settingsManager,
    114             Context context) {
    115         final int photoModuleId = context.getResources().getInteger(R.integer.camera_mode_photo);
    116         final int videoModuleId = context.getResources().getInteger(R.integer.camera_mode_video);
    117 
    118         int quickSwitchTo = moduleId;
    119         if (moduleId == photoModuleId
    120             || moduleId == context.getResources().getInteger(R.integer.camera_mode_gcam)) {
    121             // Quick switch from camera to video.
    122             quickSwitchTo = videoModuleId;
    123         } else if (moduleId == videoModuleId) {
    124             // Quick switch from video to last used camera (i.e. simple camera or hdr+)
    125             quickSwitchTo = settingsManager.getInteger(
    126                 SettingsManager.SCOPE_GLOBAL, Keys.KEY_CAMERA_MODULE_LAST_USED);
    127         }
    128 
    129         if (mRegisteredModuleAgents.get(quickSwitchTo) != null) {
    130             return quickSwitchTo;
    131         } else {
    132             return moduleId;
    133         }
    134     }
    135 
    136 }
    137