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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 
     24 namespace android {
     25 
     26 typedef StateQueue<FastCaptureState> FastCaptureStateQueue;
     27 
     28 struct FastCaptureDumpState : FastThreadDumpState {
     29     FastCaptureDumpState();
     30     /*virtual*/ ~FastCaptureDumpState();
     31 
     32     // FIXME by renaming, could pull up many of these to FastThreadDumpState
     33     uint32_t mReadSequence;     // incremented before and after each read()
     34     uint32_t mFramesRead;       // total number of frames read successfully
     35     uint32_t mReadErrors;       // total number of read() errors
     36     uint32_t mSampleRate;
     37     size_t   mFrameCount;
     38 };
     39 
     40 class FastCapture : public FastThread {
     41 
     42 public:
     43             FastCapture();
     44     virtual ~FastCapture();
     45 
     46             FastCaptureStateQueue*  sq();
     47 
     48 private:
     49             FastCaptureStateQueue   mSQ;
     50 
     51     // callouts
     52     virtual const FastThreadState *poll();
     53     virtual void setLog(NBLog::Writer *logWriter);
     54     virtual void onIdle();
     55     virtual void onExit();
     56     virtual bool isSubClassCommand(FastThreadState::Command command);
     57     virtual void onStateChange();
     58     virtual void onWork();
     59 
     60     static const FastCaptureState initial;
     61     FastCaptureState preIdle; // copy of state before we went into idle
     62     // FIXME by renaming, could pull up many of these to FastThread
     63     NBAIO_Source *inputSource;
     64     int inputSourceGen;
     65     NBAIO_Sink *pipeSink;
     66     int pipeSinkGen;
     67     short *readBuffer;
     68     ssize_t readBufferState;    // number of initialized frames in readBuffer, or -1 to clear
     69     NBAIO_Format format;
     70     unsigned sampleRate;
     71     FastCaptureDumpState dummyDumpState;
     72     uint32_t totalNativeFramesRead; // copied to dumpState->mFramesRead
     73 
     74 };  // class FastCapture
     75 
     76 }   // namespace android
     77 
     78 #endif  // ANDROID_AUDIO_FAST_CAPTURE_H
     79