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 
19 #include "ATSParser.h"
20 #include <utils/KeyedVector.h>
21 #include <set>
22 
23 namespace android {
24 namespace media {
25 class ICas;
26 class IDescrambler;
27 }
28 
29 struct ATSParser::CasManager : public RefBase {
30     CasManager();
31     virtual ~CasManager();
32 
33     status_t setMediaCas(const sp<ICas> &cas);
34 
35     bool addProgram(
36             unsigned programNumber, const CADescriptor &descriptor);
37 
38     bool addStream(
39             unsigned programNumber, unsigned elementaryPID,
40             const CADescriptor &descriptor);
41 
42     bool getCasInfo(
43             unsigned programNumber, unsigned elementaryPID,
44             int32_t *systemId, sp<IDescrambler> *descrambler,
45             std::vector<uint8_t> *sessionId) const;
46 
47     bool isCAPid(unsigned pid);
48 
49     bool parsePID(ABitReader *br, unsigned pid);
50 
51 private:
52     typedef KeyedVector<unsigned, std::vector<uint8_t> > PidToSessionMap;
53     struct ProgramCasManager;
54 
55     bool setSystemId(int32_t CA_system_ID);
56 
57     int32_t mSystemId;
58     sp<ICas> mICas;
59     KeyedVector<unsigned, sp<ProgramCasManager> > mProgramCasMap;
60     PidToSessionMap mCAPidToSessionIdMap;
61     std::set<uint32_t> mCAPidSet;
62 };
63 
64 }  // namespace android
65