1 /*
2 * Copyright (C) 2014 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 "ClearKeyCryptoPlugin"
19 #include <utils/Log.h>
20
21 #include <utils/String8.h>
22
23 #include "SessionLibrary.h"
24
25 namespace clearkeydrm {
26
27 using android::Mutex;
28 using android::sp;
29 using android::String8;
30 using android::Vector;
31
32 Mutex SessionLibrary::sSingletonLock;
33 SessionLibrary* SessionLibrary::sSingleton = NULL;
34
get()35 SessionLibrary* SessionLibrary::get() {
36 Mutex::Autolock lock(sSingletonLock);
37
38 if (sSingleton == NULL) {
39 ALOGD("Instantiating Session Library Singleton.");
40 sSingleton = new SessionLibrary();
41 }
42
43 return sSingleton;
44 }
45
createSession()46 const sp<Session>& SessionLibrary::createSession() {
47 Mutex::Autolock lock(mSessionsLock);
48
49 String8 sessionIdString = String8::format("%u", mNextSessionId);
50 mNextSessionId += 1;
51 Vector<uint8_t> sessionId;
52 sessionId.appendArray(
53 reinterpret_cast<const uint8_t*>(sessionIdString.string()),
54 sessionIdString.size());
55
56 mSessions.add(sessionId, new Session(sessionId));
57 return mSessions.valueFor(sessionId);
58 }
59
findSession(const Vector<uint8_t> & sessionId)60 const sp<Session>& SessionLibrary::findSession(
61 const Vector<uint8_t>& sessionId) {
62 Mutex::Autolock lock(mSessionsLock);
63 return mSessions.valueFor(sessionId);
64 }
65
findSession(const void * data,size_t size)66 const sp<Session>& SessionLibrary::findSession(
67 const void* data, size_t size) {
68 Vector<uint8_t> sessionId;
69 sessionId.appendArray(reinterpret_cast<const uint8_t*>(data), size);
70 return findSession(sessionId);
71 }
72
destroySession(const sp<Session> & session)73 void SessionLibrary::destroySession(const sp<Session>& session) {
74 Mutex::Autolock lock(mSessionsLock);\
75 mSessions.removeItem(session->sessionId());
76 }
77
78 } // namespace clearkeydrm
79