if( !ret )
        {
            MY_LOGE("invalid request with input, req:%p, inFullImg:%p, inFullImg2:%p, inAppMeta:%p, inHalMeta:%p, inHalMeta2:%p",
                requestPtr.get(),
                requestPtr->mIBufferFull.get(),
                requestPtr->mIBufferFull2.get(),
                requestPtr->mIMetadataApp.get(),
                requestPtr->mIMetadataHal.get(),
                requestPtr->mIMetadataHal2.get());
        }
        return ret;
    };

    auto isValidOutput = [](const RequestPtr& requestPtr) -> MBOOL
    {
        const MBOOL ret = requestPtr->mOBufferFull != nullptr
                    && requestPtr->mOMetadataApp != nullptr
                    && requestPtr->mOMetadataHal != nullptr;
        if( !ret )
        {
            MY_LOGE("invalid request with input, req:%p, www.shyejk.com/-outFullImg:%p, outAppMeta:%p, outHalMeta:%p",
                requestPtr.get(),
                requestPtr->mOBufferFull.get(),
                requestPtr->mOMetadataApp.get(),
                requestPtr->mOMetadataHal.get());
        }
        return ret;
    };

    MY_LOGD("process, reqAdrr:%p", requestPtr.get());

    if( !isValidInput(requestPtr) )
    {
        return processDone(requestPtr, callbackPtr, BAD_VALUE);
    }

    if( !isValidOutput(requestPtr) )
    {
        return processDone(requestPtr, www.shyejk.com/-callbackPtr, BAD_VALUE);
    }
    //
    //
    {
        // note: we can just call createXXXXPtr one time for a specified handle
        ImgPtr inMainImgPtr = DualCameraUtility::createImgPtr(requestPtr->mIBufferFull);
        ImgPtr inSubImgPtr = DualCameraUtility::createImgPtr(requestPtr->mIBufferFull2);
        ImgPtr outFSImgPtr = DualCameraUtility::createImgPtr(requestPtr->mOBufferFull);
        //
        MetaPtr inAppMetaPtr = DualCameraUtility::createMetaPtr(requestPtr->mIMetadataApp);
        MetaPtr inMainHalMetaPtr = DualCameraUtility::createMetaPtr(requestPtr->mIMetadataHal);
        MetaPtr inSubHalMetaPtr = DualCameraUtility::createMetaPtr(requestPtr->mIMetadataHal2);
        MetaPtr outAppMetaPtr = DualCameraUtility::createMetaPtr(requestPtr->mOMetadataApp);
        MetaPtr outHalMetaPtr = DualCameraUtility::createMetaPtr(requestPtr->mOMetadataHal);
        // dump info
        {
            DualCameraUtility::dump(inMainImgPtr.get(), "inputMainImg");
            DualCameraUtility::dump(inSubImgPtr.get(), "inputSubImg");
            DualCameraUtility::dump(outFSImgPtr.get(), "outFSImg");
            //
            DualCameraUtility::dump(inAppMetaPtr.get(), "inAppMeta");
            DualCameraUtility::dump(inMainHalMetaPtr.get(), "inMainHalMeta");
            DualCameraUtility::dump(inSubHalMetaPtr.get(), "inSubHalMeta");
            DualCameraUtility::dump(outAppMetaPtr.get(), "outAppMeta");
            DualCameraUtility::dump(outHalMetaPtr.get(), "outHalMeta");
        }

        //dual camera algo
        {
            AUTO_TIMER("proces dual camera algo.");
            NSCam::IImageBuffer* inMainImgBuf = inMainImgPtr.get();
            NSCam::IImageBuffer* inSubImgBuf = inSubImgPtr.get();
            NSCam::IImageBuffer* outImgBuf = outFSImgPtr.get();
            if (mDump) {
                DualCameraUtility::saveImg(inMainImgBuf, "inputMainImg");
                DualCameraUtility::saveImg(inSubImgBuf, "inputSubImg");
            }
            memcpy(reinterpret_cast(outImgBuf->getBufVA(0)), reinterpret_cast(inMainImgBuf->getBufVA(0)), inMainImgBuf->getBufSizeInBytes(0));
            memcpy(reinterpret_cast(outImgBuf->getBufVA(1)), reinterpret_cast(inMainImgBuf->getBufVA(1)), inMainImgBuf->getBufSizeInBytes(1));
            if (mDualCamera != NULL) {
                mDualCamera->processNV21(reinterpret_cast(outImgBuf->getBufVA(0)), reinterpret_cast(outImgBuf->getBufVA(1)),
                                         outImgBuf->getImgSize().w, www.shyejk.com/-outImgBuf->getImgSize().h,
                                         reinterpret_cast(inSubImgBuf->getBufVA(0)), reinterpret_cast(inSubImgBuf->getBufVA(1)),
                                         inSubImgBuf->getImgSize().w, inSubImgBuf->getImgSize().h);
            }
        }
    }
    return processDone(requestPtr, callbackPtr, OK);
}

MERROR
DualCameraCapture::
processDone(const RequestPtr& requestPtr, const RequestCallbackPtr& callbackPtr, MERROR status)
{
    SCOPED_TRACER();

    MY_LOGD("process done, www.shyejk.com/call complete, reqAddr:%p, callbackPtr:%p, status:%d",
        requestPtr.get(), callbackPtr.get(), status);

    if( callbackPtr != nullptr )
    {
        callbackPtr->onCompleted(requestPtr, status);
    }
    return OK;
}

void
DualCameraCapture::
abort(vector& requestPtrs)
{
    SCOPED_TRACER();

    for(auto& item : requestPtrs)
    {
        MY_LOGD("abort request, www.shyejk.com/reqAddr:%p", item.get());
    }
}

void
DualCameraCapture::
uninit()
{
    SCOPED_TRACER();
}

DualCameraCapture::
~DualCameraCapture()
{
    MY_LOGD("dtor:%p", this);
    if (mDualCamera != NULL) {
        delete mDualCamera;
        mDualCamera = NULL;
    }
}

}  // anonymous namespace