| /* |
| * Copyright (C) 2015 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.usbtuner.tvinput; |
| |
| import android.content.ComponentName; |
| import android.content.Context; |
| import android.media.tv.TvContract; |
| import android.os.Environment; |
| import android.util.Log; |
| |
| import com.android.usbtuner.exoplayer.cache.CacheManager; |
| import com.android.usbtuner.exoplayer.cache.TrickplayStorageManager; |
| import com.android.usbtuner.util.SystemPropertiesProxy; |
| |
| import java.io.File; |
| |
| /** |
| * {@link UsbTunerTvInputService} serves TV channels coming from a usb tuner device. |
| */ |
| public class UsbTunerTvInputService extends BaseTunerTvInputService { |
| private static final String TAG = "UsbTunerTvInputService"; |
| private static final boolean DEBUG = false; |
| |
| |
| private static final String MAX_CACHE_SIZE_KEY = "usbtuner.cachesize_mbytes"; |
| private static final int MAX_CACHE_SIZE_DEF = 2 * 1024; // 2GB |
| private static final int MIN_CACHE_SIZE_DEF = 256; // 256MB |
| |
| @Override |
| protected CacheManager createCacheManager() { |
| int maxCacheSizeMb = SystemPropertiesProxy.getInt(MAX_CACHE_SIZE_KEY, MAX_CACHE_SIZE_DEF); |
| if (maxCacheSizeMb >= MIN_CACHE_SIZE_DEF) { |
| boolean useExternalStorage = Environment.MEDIA_MOUNTED.equals( |
| Environment.getExternalStorageState()) && |
| Environment.isExternalStorageRemovable(); |
| if (DEBUG) Log.d(TAG, "useExternalStorage for trickplay: " + useExternalStorage); |
| boolean allowToUseInternalStorage = true; |
| if (useExternalStorage || allowToUseInternalStorage) { |
| File baseDir = useExternalStorage ? getExternalCacheDir() : getCacheDir(); |
| return new CacheManager( |
| new TrickplayStorageManager(getApplicationContext(), baseDir, |
| 1024L * 1024 * maxCacheSizeMb)); |
| } |
| } |
| return null; |
| } |
| |
| public static String getInputId(Context context) { |
| return TvContract.buildInputId(new ComponentName(context, UsbTunerTvInputService.class)); |
| } |
| } |