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      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 #ifndef ANDROID_AUDIO_FAST_CAPTURE_H
     18 #define ANDROID_AUDIO_FAST_CAPTURE_H
     19 
     20 #include "FastThread.h"
     21 #include "StateQueue.h"
     22 #include "FastCaptureState.h"
     23 #include "FastCaptureDumpState.h"
     24 
     25 namespace android {
     26 
     27 typedef StateQueue<FastCaptureState> FastCaptureStateQueue;
     28 
     29 class FastCapture : public FastThread {
     30 
     31 public:
     32             FastCapture();
     33     virtual ~FastCapture();
     34 
     35             FastCaptureStateQueue*  sq();
     36 
     37 private:
     38             FastCaptureStateQueue   mSQ;
     39 
     40     // callouts
     41     virtual const FastThreadState *poll();
     42     virtual void setNBLogWriter(NBLog::Writer *logWriter);
     43     virtual void onIdle();
     44     virtual void onExit();
     45     virtual bool isSubClassCommand(FastThreadState::Command command);
     46     virtual void onStateChange();
     47     virtual void onWork();
     48 
     49     static const FastCaptureState sInitial;
     50 
     51     FastCaptureState    mPreIdle;   // copy of state before we went into idle
     52     // FIXME by renaming, could pull up many of these to FastThread
     53     NBAIO_Source*       mInputSource;
     54     int                 mInputSourceGen;
     55     NBAIO_Sink*         mPipeSink;
     56     int                 mPipeSinkGen;
     57     void*               mReadBuffer;
     58     ssize_t             mReadBufferState;   // number of initialized frames in readBuffer,
     59                                             // or -1 to clear
     60     NBAIO_Format        mFormat;
     61     unsigned            mSampleRate;
     62     FastCaptureDumpState mDummyFastCaptureDumpState;
     63     uint32_t            mTotalNativeFramesRead; // copied to dumpState->mFramesRead
     64 
     65 };  // class FastCapture
     66 
     67 }   // namespace android
     68 
     69 #endif  // ANDROID_AUDIO_FAST_CAPTURE_H
     70