1 /*
2  * Copyright (C) 2015 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.usbtuner.tvinput;
18 
19 import android.content.Intent;
20 import android.content.pm.PackageManager;
21 import android.content.pm.ResolveInfo;
22 import android.media.tv.TvInputHardwareInfo;
23 import android.media.tv.TvInputInfo;
24 import android.os.Environment;
25 import android.util.Log;
26 
27 import com.android.usbtuner.exoplayer.cache.CacheManager;
28 import com.android.usbtuner.exoplayer.cache.TrickplayStorageManager;
29 import com.android.usbtuner.util.SystemPropertiesProxy;
30 import com.android.usbtuner.util.TisConfiguration;
31 import org.xmlpull.v1.XmlPullParserException;
32 
33 import java.io.File;
34 import java.io.IOException;
35 
36 /**
37  * {@link InternalTunerTvInputService} serves TV channels coming from a internal tuner device.
38  */
39 public class InternalTunerTvInputService extends BaseTunerTvInputService {
40     private static final String TAG = "InternalTunerTvInputService";
41     private static final boolean DEBUG = false;
42 
43 
44     private static final String MAX_CACHE_SIZE_KEY = "usbtuner.cachesize_mbytes";
45     private static final int MAX_CACHE_SIZE_DEF = 2 * 1024;  // 2GB
46     private static final int MIN_CACHE_SIZE_DEF = 256;  // 256MB
47 
48     private ResolveInfo mResolveInfo;
49     private String mTvInputId;
50 
51     @Override
onCreate()52     public void onCreate() {
53         super.onCreate();
54         mResolveInfo = getPackageManager().resolveService(
55                 new Intent(SERVICE_INTERFACE).setClass(this, getClass()),
56                 PackageManager.GET_SERVICES | PackageManager.GET_META_DATA);
57     }
58 
59     @Override
createCacheManager()60     protected CacheManager createCacheManager() {
61         int maxCacheSizeMb = SystemPropertiesProxy.getInt(MAX_CACHE_SIZE_KEY, MAX_CACHE_SIZE_DEF);
62         if (maxCacheSizeMb >= MIN_CACHE_SIZE_DEF) {
63             boolean useExternalStorage = Environment.MEDIA_MOUNTED.equals(
64                     Environment.getExternalStorageState()) &&
65                     Environment.isExternalStorageRemovable();
66             if (DEBUG) Log.d(TAG, "useExternalStorage for trickplay: " + useExternalStorage);
67             boolean allowToUseInternalStorage = true;
68             if (useExternalStorage || allowToUseInternalStorage) {
69                 File baseDir = useExternalStorage ? getExternalCacheDir() : getCacheDir();
70                 return new CacheManager(
71                         new TrickplayStorageManager(getApplicationContext(), baseDir,
72                                 1024L * 1024 * maxCacheSizeMb));
73             }
74         }
75         return null;
76     }
77 
78     @Override
onHardwareAdded(TvInputHardwareInfo hardwareInfo)79     public TvInputInfo onHardwareAdded(TvInputHardwareInfo hardwareInfo) {
80         if (DEBUG) Log.d(TAG, "onHardwareAdded: " + hardwareInfo.toString());
81         if (mTvInputId != null) {
82             return null;
83         }
84         TvInputInfo info = null;
85         if (hardwareInfo.getType() == TvInputHardwareInfo.TV_INPUT_TYPE_TUNER &&
86                 TisConfiguration.getTunerHwDeviceId(this) == hardwareInfo.getDeviceId()) {
87             try {
88                 info = TvInputInfo.createTvInputInfo(this, mResolveInfo, hardwareInfo,
89                         "Google Tuner", null);
90                 mTvInputId = info.getId();
91             } catch (XmlPullParserException e) {
92                 e.printStackTrace();
93             } catch (IOException e) {
94                 e.printStackTrace();
95             }
96         }
97         return info;
98     }
99 
100     @Override
onHardwareRemoved(TvInputHardwareInfo hardwareInfo)101     public String onHardwareRemoved(TvInputHardwareInfo hardwareInfo) {
102         if (DEBUG) Log.d(TAG, "onHardwareRemoved: " + hardwareInfo.toString());
103         return null;
104     }
105 }
106