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      1 /*
      2  * Copyright (C) 2012 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License"); you may not
      5  * use this file except in compliance with the License. You may obtain a copy of
      6  * 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, WITHOUT
     12  * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
     13  * License for the specific language governing permissions and limitations under
     14  * the License.
     15  */
     16 
     17 #ifndef CTSAUDIO_SIGNALPROCESSINGIMPL_H
     18 #define CTSAUDIO_SIGNALPROCESSINGIMPL_H
     19 
     20 #include <memory>
     21 #include <utils/String8.h>
     22 
     23 #include "SignalProcessingInterface.h"
     24 #include "ClientSocket.h"
     25 #include "RWBuffer.h"
     26 
     27 /**
     28  * Implements SignalProcessingInterface
     29  */
     30 class SignalProcessingImpl: public SignalProcessingInterface {
     31 public:
     32     static const android::String8 MAIN_PROCESSING_SCRIPT;
     33     SignalProcessingImpl();
     34     virtual ~SignalProcessingImpl();
     35     /**
     36      * @param script main script to call function script
     37      */
     38     virtual bool init(const android::String8& script);
     39 
     40     virtual TaskGeneric::ExecutionResult run(const android::String8& functionScript,
     41             int nInputs, bool* inputTypes, void** inputs,
     42             int nOutputs, bool* outputTypes, void** outputs);
     43 private:
     44     bool send(const char* data, int len);
     45     bool read(char* data, int len);
     46 
     47 private:
     48     static const int SCRIPT_PORT = 15010;
     49     std::unique_ptr<ClientSocket> mSocket;
     50     pid_t mChildPid;
     51     bool mChildRunning;
     52     RWBuffer mBuffer;
     53 };
     54 
     55 
     56 #endif //CTSAUDIO_SIGNALPROCESSINGIMPL_H
     57