android10/frameworks/av/services/audioflinger/FastCapture.h

/*
 * Copyright (C) 2014 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#ifndef ANDROID_AUDIO_FAST_CAPTURE_H
#define ANDROID_AUDIO_FAST_CAPTURE_H

#include "FastThread.h"
#include "StateQueue.h"
#include "FastCaptureState.h"
#include "FastCaptureDumpState.h"

namespace android {

typedef StateQueue<FastCaptureState> FastCaptureStateQueue;

class FastCapture : public FastThread {

public:
            FastCapture();
    virtual ~FastCapture();

            FastCaptureStateQueue*  sq();

private:
            FastCaptureStateQueue   mSQ;

    // callouts
    virtual const FastThreadState *poll();
    virtual void setNBLogWriter(NBLog::Writer *logWriter);
    virtual void onIdle();
    virtual void onExit();
    virtual bool isSubClassCommand(FastThreadState::Command command);
    virtual void onStateChange();
    virtual void onWork();

    static const FastCaptureState sInitial;

    FastCaptureState    mPreIdle;   // copy of state before we went into idle
    // FIXME by renaming, could pull up many of these to FastThread
    NBAIO_Source*       mInputSource;
    int                 mInputSourceGen;
    NBAIO_Sink*         mPipeSink;
    int                 mPipeSinkGen;
    void*               mReadBuffer;
    ssize_t             mReadBufferState;   // number of initialized frames in readBuffer,
                                            // or -1 to clear
    NBAIO_Format        mFormat;
    unsigned            mSampleRate;
    FastCaptureDumpState mDummyFastCaptureDumpState;
    uint32_t            mTotalNativeFramesRead; // copied to dumpState->mFramesRead

};  // class FastCapture

}   // namespace android

#endif  // ANDROID_AUDIO_FAST_CAPTURE_H