libsidebandstreamhandle/SidebandStreamHandle.cpp

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#define LOG_TAG "SidebandStreamHandle"

#include <string.h>
#include <utils/Log.h>

#include "SidebandStreamHandle.h"

namespace android {

SidebandStreamHandle::SidebandStreamHandle(){
    mLibHandle = NULL;
    mHandleProducer = NULL;
    mHandleConsumer = NULL;
}

bool SidebandStreamHandle::init(){
    bool status = true;
    if (mLibHandle || mHandleProducer || mHandleConsumer) {
        ALOGE("SidebandStreamHandle::init called twice\n");
        status = false;
    }

    if(status){
        mLibHandle = dlopen(SIDEBAND_LIBRARY, RTLD_NOW);

        if(mLibHandle) {
            mHandleProducer = (CreateSidebandStreamHandleProducer_t *)
                dlsym(mLibHandle, "CreateSidebandStreamHandleProducer");
            mHandleConsumer = (CreateSidebandStreamHandleConsumer_t *)
                dlsym(mLibHandle, "CreateSidebandStreamHandleConsumer");
            if (!mHandleProducer || !mHandleConsumer)
                status = false;
        }else
            status = false;
        }

    if (!status && mLibHandle) {
        dlclose(mLibHandle);
        mLibHandle = NULL;
        mHandleProducer = NULL;
        mHandleConsumer = NULL;
    }
    return status;
}

void SidebandStreamHandle::destroy()
{
    ALOGI("SidebandStreamHandle::destroy\n");
    if (mLibHandle) {
        dlclose(mLibHandle);
    }

    mLibHandle = NULL;
    mHandleProducer = NULL;
    mHandleConsumer = NULL;
}

};  //namespace android