video_codec_sdk/Samples/NvCodec/NvEncoder/NvEncoderD3D11.h

/*
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 * Copyright (c) 2010-2024 NVIDIA Corporation
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#pragma once

#include <vector>
#include <stdint.h>
#include <mutex>
#include <unordered_map>
#include <d3d11.h>
#include "NvEncoder.h"

class NvEncoderD3D11 : public NvEncoder
{
public:
    NvEncoderD3D11(ID3D11Device* pD3D11Device, uint32_t nWidth, uint32_t nHeight, NV_ENC_BUFFER_FORMAT eBufferFormat, 
        uint32_t nExtraOutputDelay = 3, bool bMotionEstimationOnly = false,  bool bOPInVideoMemory = false);
    virtual ~NvEncoderD3D11();

protected:
    /**
    *  @brief This function is used to release the input buffers allocated for encoding.
    *  This function is an override of virtual function NvEncoder::ReleaseInputBuffers().
    */
    virtual void ReleaseInputBuffers() override;

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 ID3D11Texture2D textures which is used to accept input data.
    *  To obtain handle to input buffers application must call NvEncoder::GetNextInputFrame()
    */
    virtual void AllocateInputBuffers(int32_t numInputBuffers) override;

private:
    /**
    *  @brief This is a private function to release ID3D11Texture2D textures used for encoding.
    */
    void ReleaseD3D11Resources();

protected:
    ID3D11Device *m_pD3D11Device = nullptr;

private:
    ID3D11DeviceContext* m_pD3D11DeviceContext = nullptr;
};