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      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 hardware {
     25 namespace cas {
     26 namespace native {
     27 namespace V1_0 {
     28 struct IDescrambler;
     29 }}}}
     30 using hardware::cas::native::V1_0::IDescrambler;
     31 
     32 struct ATSParser::CasManager : public RefBase {
     33     CasManager();
     34     virtual ~CasManager();
     35 
     36     status_t setMediaCas(const sp<ICas> &cas);
     37 
     38     bool addProgram(
     39             unsigned programNumber, const CADescriptor &descriptor);
     40 
     41     bool addStream(
     42             unsigned programNumber, unsigned elementaryPID,
     43             const CADescriptor &descriptor);
     44 
     45     bool getCasInfo(
     46             unsigned programNumber, unsigned elementaryPID,
     47             int32_t *systemId, sp<IDescrambler> *descrambler,
     48             std::vector<uint8_t> *sessionId) const;
     49 
     50     bool isCAPid(unsigned pid);
     51 
     52     bool parsePID(ABitReader *br, unsigned pid);
     53 
     54 private:
     55     typedef KeyedVector<unsigned, std::vector<uint8_t> > PidToSessionMap;
     56     struct ProgramCasManager;
     57 
     58     bool setSystemId(int32_t CA_system_ID);
     59 
     60     int32_t mSystemId;
     61     sp<ICas> mICas;
     62     KeyedVector<unsigned, sp<ProgramCasManager> > mProgramCasMap;
     63     PidToSessionMap mCAPidToSessionIdMap;
     64     std::set<uint32_t> mCAPidSet;
     65 };
     66 
     67 }  // namespace android
     68