video-pc/libs/Recorder/record_desktop_duplication.h

#ifndef RECORD_DESKTOP_DUPLICATION
#define RECORD_DESKTOP_DUPLICATION

#include "record_desktop.h"

#include <Windows.h>
#include <d3d11.h>
#include <dxgi1_2.h>

namespace am {
typedef struct _PTR_INFO
{
    _Field_size_bytes_(BufferSize) BYTE *buff;
    DXGI_OUTDUPL_POINTER_SHAPE_INFO shape;
    POINT position;
    bool visible;
    UINT size;
    UINT output_index;
    LARGE_INTEGER pre_timestamp;
} DUPLICATION_CURSOR_INFO;

class record_desktop_duplication : public record_desktop
{
public:
    record_desktop_duplication();
    ~record_desktop_duplication();

    virtual int init(const RECORD_DESKTOP_RECT &rect, const int fps);

    virtual int start();
    virtual int pause();
    virtual int resume();
    virtual int stop();

protected:
    virtual void clean_up();

private:
    int get_dst_adapter(IDXGIAdapter **adapter);

    int create_d3d_device(IDXGIAdapter *adapter, ID3D11Device **device);

    int init_d3d11();

    void clean_d3d11();

    int init_duplication();

    int free_duplicated_frame();

    void clean_duplication();

    bool attatch_desktop();

    int get_desktop_image(DXGI_OUTDUPL_FRAME_INFO *frame_info);

    int get_desktop_cursor(const DXGI_OUTDUPL_FRAME_INFO *frame_info);

    void draw_cursor();

    void do_sleep(int64_t dur, int64_t pre, int64_t now);

    void record_func();

private:
    uint8_t *_buffer;
    uint32_t _buffer_size;
    uint32_t _width, _height;

    HMODULE _d3d11, _dxgi;

    ID3D11Device *_d3d_device;
    ID3D11DeviceContext *_d3d_ctx;
    ID3D11VertexShader *_d3d_vshader;
    ID3D11PixelShader *_d3d_pshader;
    ID3D11InputLayout *_d3d_inlayout;
    ID3D11SamplerState *_d3d_samplerlinear;

    IDXGIOutputDuplication *_duplication;
    ID3D11Texture2D *_image;
    DXGI_OUTPUT_DESC _output_des;

    int _output_index;
    DUPLICATION_CURSOR_INFO _cursor_info;
};
} // namespace am

#endif