/*
 * This copyright notice applies to this header file only:
 *
 * Copyright (c) 2010-2024 NVIDIA Corporation
 *
 * Permission is hereby granted, free of charge, to any person
 * obtaining a copy of this software and associated documentation
 * files (the "Software"), to deal in the Software without
 * restriction, including without limitation the rights to use,
 * copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the software, and to permit persons to whom the
 * software is furnished to do so, subject to the following
 * conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 */

#include <iostream>
#include "NvEncoder/NvEncoder.h"
#include <unordered_map>
#include <GL/glew.h>

class NvEncoderGL : public NvEncoder
{
public:
    /**
    *  @brief The constructor for the NvEncoderGL class
    *  An OpenGL context must be current to the calling thread/process when
    *  creating an instance of this class.
    */
    NvEncoderGL(uint32_t nWidth, uint32_t nHeight, NV_ENC_BUFFER_FORMAT eBufferFormat,
        uint32_t nExtraOutputDelay = 3, bool bMotionEstimationOnly = false);

    virtual ~NvEncoderGL();
private:
    /**
    *  @brief This function is used to allocate input buffers for encoding.
    *  This function is an override of virtual function NvEncoder::AllocateInputBuffers().
    *  This function creates OpenGL textures which are used to hold input data.
    *  To obtain handle to input buffers, the application must call NvEncoder::GetNextInputFrame().
    *  An OpenGL context must be current to the thread/process when calling
    *  this method.
    */
    virtual void AllocateInputBuffers(int32_t numInputBuffers) override;

    /**
    *  @brief This function is used to release the input buffers allocated for encoding.
    *  This function is an override of virtual function NvEncoder::ReleaseInputBuffers().
    *  An OpenGL context must be current to the thread/process when calling
    *  this method.
    */
    virtual void ReleaseInputBuffers() override;
private:
    void ReleaseGLResources();
};