//
// Copyright 2017-2023 Valve Corporation.
//
// 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.
//

#pragma once

#if defined(IPL_USES_OPENCL)

#include "impulse_response.h"
#include "opencl_buffer.h"

namespace ipl {

// --------------------------------------------------------------------------------------------------------------------
// OpenCLImpulseResponse
// --------------------------------------------------------------------------------------------------------------------

class OpenCLImpulseResponse : public ImpulseResponse
{
public:
    OpenCLImpulseResponse(shared_ptr<OpenCLDevice> openCL,
                          float duration,
                          int order,
                          int samplingRate);

    virtual ~OpenCLImpulseResponse() override;

    cl_mem buffer() const
    {
        return mBuffer.buffer();
    }

    cl_mem* channelBuffers() const
    {
        return mChannelBuffers.data();
    }

    virtual void reset() override;

    void copyDeviceToHost();

    void copyHostToDevice();

private:
    shared_ptr<OpenCLDevice> mOpenCL;
    size_t mSize;
    size_t mPaddedSize;
    OpenCLBuffer mBuffer;
    Array<cl_mem> mChannelBuffers;
};

}

#endif
