#include <migraph/gpu/batchnorm.hpp>
#include <migraph/operators.hpp>
#include <migraph/manage_ptr.hpp>
#include <migraph/gpu/miopen.hpp>
#include <utility>

namespace migraph {
namespace gpu {

shape miopen_batch_norm_inference::compute_shape(const std::vector<shape>& inputs) const
{
    check_shapes{inputs, *this}.has(6);
    return op.compute_shape(
        {inputs.at(0), inputs.at(1), inputs.at(2), inputs.at(3), inputs.at(4)});
}

argument
miopen_batch_norm_inference::compute(context& ctx, const shape& output_shape, const std::vector<argument>& args) const
{
    auto x_desc  = make_tensor(args[0].get_shape());
    auto y_desc  = make_tensor(output_shape);
    auto bn_desc = make_tensor(args[3].get_shape());

    float alpha = 1.0, beta = 0.0f;

    miopenBatchNormalizationForwardInference(ctx.handle.get(),
                                             miopenBatchNormMode_t(op.bn_mode),
                                             &alpha,
                                             &beta,
                                             x_desc.get(),
                                             args[0].implicit(),
                                             y_desc.get(),
                                             args[5].implicit(),
                                             bn_desc.get(),
                                             args[1].implicit(),
                                             args[2].implicit(),
                                             args[3].implicit(),
                                             args[4].implicit(),
                                             op.epsilon);

    return args[5];
}

} // namespace gpu

} // namespace migraph