DisplayFlow/demo/windows_sender/VideoEncoder.h

#pragma once

#include <d3d11.h>
#include <wrl/client.h>
#include <vector>
#include <cstdint>

#ifndef NO_FFMPEG
extern "C" {
#include <libavcodec/avcodec.h>
#include <libavutil/imgutils.h>
#include <libavutil/opt.h>
#include <libswscale/swscale.h>
}
#endif

using Microsoft::WRL::ComPtr;

class VideoEncoder {
public:
    VideoEncoder();
    ~VideoEncoder();

    bool Initialize(ID3D11Device* device, int width, int height, int fps, int bitrate);
    bool Reinitialize(int width, int height, int fps, int bitrate);
    bool EncodeFrame(ID3D11Texture2D* texture, std::vector<uint8_t>& outputData, bool& isKeyFrame);
    void Release();

private:
    ID3D11Device* device_ = nullptr;
    ID3D11DeviceContext* context_ = nullptr;
    ComPtr<ID3D11Texture2D> stagingTexture_;

#ifndef NO_FFMPEG
    AVCodecContext* codecContext_ = nullptr;
    AVFrame* frame_ = nullptr;
    AVPacket* packet_ = nullptr;
    SwsContext* swsContext_ = nullptr;
#else
    void* codecContext_ = nullptr;
    void* frame_ = nullptr;
    void* packet_ = nullptr;
    void* swsContext_ = nullptr;
#endif

    int width_ = 0;
    int height_ = 0;
    int pts_ = 0;
};