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#include "test_precomp.hpp"

#ifdef HAVE_CUDA

#include "opencv2/gpu/stream_accessor.hpp"

using namespace cvtest;

#if CUDART_VERSION >= 5000

struct Async : testing::TestWithParam<cv::gpu::DeviceInfo>
{
    cv::gpu::CudaMem src;
    cv::gpu::GpuMat d_src;

    cv::gpu::CudaMem dst;
    cv::gpu::GpuMat d_dst;

    virtual void SetUp()
    {
        cv::gpu::DeviceInfo devInfo = GetParam();
        cv::gpu::setDevice(devInfo.deviceID());

        cv::Mat m = randomMat(cv::Size(128, 128), CV_8UC1);
        src.create(m.size(), m.type(), cv::gpu::CudaMem::ALLOC_PAGE_LOCKED);
        m.copyTo(src.createMatHeader());
    }
};

void checkMemSet(cv::gpu::Stream&, int status, void* userData)
{
    ASSERT_EQ(cudaSuccess, status);

    Async* test = reinterpret_cast<Async*>(userData);

    cv::Mat src = test->src;
    cv::Mat dst = test->dst;

    cv::Mat dst_gold = cv::Mat::zeros(src.size(), src.type());

    ASSERT_MAT_NEAR(dst_gold, dst, 0);
}

GPU_TEST_P(Async, MemSet)
{
    cv::gpu::Stream stream;

    d_dst.upload(src);

    stream.enqueueMemSet(d_dst, cv::Scalar::all(0));
    stream.enqueueDownload(d_dst, dst);

    Async* test = this;
    stream.enqueueHostCallback(checkMemSet, test);

    stream.waitForCompletion();
}

void checkConvert(cv::gpu::Stream&, int status, void* userData)
{
    ASSERT_EQ(cudaSuccess, status);

    Async* test = reinterpret_cast<Async*>(userData);

    cv::Mat src = test->src;
    cv::Mat dst = test->dst;

    cv::Mat dst_gold;
    src.convertTo(dst_gold, CV_32S);

    ASSERT_MAT_NEAR(dst_gold, dst, 0);
}

GPU_TEST_P(Async, Convert)
{
    cv::gpu::Stream stream;

    stream.enqueueUpload(src, d_src);
    stream.enqueueConvert(d_src, d_dst, CV_32S);
    stream.enqueueDownload(d_dst, dst);

    Async* test = this;
    stream.enqueueHostCallback(checkConvert, test);

    stream.waitForCompletion();
}

GPU_TEST_P(Async, WrapStream)
{
    cudaStream_t cuda_stream = NULL;
    ASSERT_EQ(cudaSuccess, cudaStreamCreate(&cuda_stream));

    cv::gpu::Stream stream = cv::gpu::StreamAccessor::wrapStream(cuda_stream);

    stream.enqueueUpload(src, d_src);
    stream.enqueueConvert(d_src, d_dst, CV_32S);
    stream.enqueueDownload(d_dst, dst);

    Async* test = this;
    stream.enqueueHostCallback(checkConvert, test);

    stream.waitForCompletion();

    ASSERT_EQ(cudaSuccess, cudaStreamDestroy(cuda_stream));
}

INSTANTIATE_TEST_CASE_P(GPU_Stream, Async, ALL_DEVICES);

#endif

#endif // HAVE_CUDA
