1 /* 2 * Copyright (C) 2017 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 //#define LOG_NDEBUG 0 18 #define LOG_TAG "ClearKeySessionLibrary" 19 #include <utils/Log.h> 20 21 #include <media/stagefright/foundation/ABuffer.h> 22 #include <media/stagefright/foundation/ADebug.h> 23 24 #include "ClearKeySessionLibrary.h" 25 26 namespace android { 27 namespace clearkeycas { 28 29 Mutex ClearKeySessionLibrary::sSingletonLock; 30 ClearKeySessionLibrary* ClearKeySessionLibrary::sSingleton = NULL; 31 ClearKeyCasSession(CasPlugin * plugin)32ClearKeyCasSession::ClearKeyCasSession(CasPlugin *plugin) 33 : mPlugin(plugin) { 34 mKeyInfo[0].valid = mKeyInfo[1].valid = false; 35 } 36 ~ClearKeyCasSession()37ClearKeyCasSession::~ClearKeyCasSession() { 38 } 39 get()40ClearKeySessionLibrary* ClearKeySessionLibrary::get() { 41 Mutex::Autolock lock(sSingletonLock); 42 43 if (sSingleton == NULL) { 44 ALOGV("Instantiating Session Library Singleton."); 45 sSingleton = new ClearKeySessionLibrary(); 46 } 47 48 return sSingleton; 49 } 50 ClearKeySessionLibrary()51ClearKeySessionLibrary::ClearKeySessionLibrary() : mNextSessionId(1) {} 52 addSession(CasPlugin * plugin,CasSessionId * sessionId)53status_t ClearKeySessionLibrary::addSession( 54 CasPlugin *plugin, CasSessionId *sessionId) { 55 CHECK(sessionId); 56 57 Mutex::Autolock lock(mSessionsLock); 58 59 std::shared_ptr<ClearKeyCasSession> session(new ClearKeyCasSession(plugin)); 60 61 uint8_t *byteArray = (uint8_t *) &mNextSessionId; 62 sessionId->push_back(byteArray[3]); 63 sessionId->push_back(byteArray[2]); 64 sessionId->push_back(byteArray[1]); 65 sessionId->push_back(byteArray[0]); 66 mNextSessionId++; 67 68 mIDToSessionMap.add(*sessionId, session); 69 return OK; 70 } 71 findSession(const CasSessionId & sessionId)72std::shared_ptr<ClearKeyCasSession> ClearKeySessionLibrary::findSession( 73 const CasSessionId& sessionId) { 74 Mutex::Autolock lock(mSessionsLock); 75 76 ssize_t index = mIDToSessionMap.indexOfKey(sessionId); 77 if (index < 0) { 78 return NULL; 79 } 80 return mIDToSessionMap.valueFor(sessionId); 81 } 82 destroySession(const CasSessionId & sessionId)83void ClearKeySessionLibrary::destroySession(const CasSessionId& sessionId) { 84 Mutex::Autolock lock(mSessionsLock); 85 86 ssize_t index = mIDToSessionMap.indexOfKey(sessionId); 87 if (index < 0) { 88 return; 89 } 90 91 std::shared_ptr<ClearKeyCasSession> session = mIDToSessionMap.valueAt(index); 92 mIDToSessionMap.removeItemsAt(index); 93 } 94 destroyPlugin(CasPlugin * plugin)95void ClearKeySessionLibrary::destroyPlugin(CasPlugin *plugin) { 96 Mutex::Autolock lock(mSessionsLock); 97 98 for (ssize_t index = mIDToSessionMap.size() - 1; index >= 0; index--) { 99 std::shared_ptr<ClearKeyCasSession> session = mIDToSessionMap.valueAt(index); 100 if (session->getPlugin() == plugin) { 101 mIDToSessionMap.removeItemsAt(index); 102 } 103 } 104 } 105 106 } // namespace clearkeycas 107 } // namespace android 108