#ifndef VGPU_NVFBC_TOSYS_C_H
#define VGPU_NVFBC_TOSYS_C_H

/*
 * C mirror of NvFBC's ToSys interface. The vendor header
 * third_party/NvFBC/nvFBCToSys.h declares INvFBCToSys_v3 as a C++ abstract
 * class (vtable of 5 pure-virtual
 * __stdcall methods). We do NOT edit the vendor header; instead we replicate its
 * single-inheritance vtable ABI as a COM-in-C interface so the producer stays
 * pure C. Slot order MUST match declaration order in nvFBCToSys.h:
 *   0 NvFBCToSysSetUp
 *   1 NvFBCToSysGrabFrame
 *   2 NvFBCToSysCursorCapture
 *   3 NvFBCToSysGPUBasedCPUSleep
 *   4 NvFBCToSysRelease
 * On x64 (mingw/MSVC) `this` is the implicit first integer argument; __stdcall
 * is a no-op for x64 so a plain pointer arg matches the vtable slot.
 */

#include "NvFBC/nvFBC.h"          /* vendor (third_party/): NVFBCRESULT, NvU32, param structs */

/* SetUp / GrabFrame param structs come from nvFBCToSys.h, but that header is C++.
 * Redeclare the two we use here (layout-identical, C-clean). */

typedef enum {
    NVFBC_TOSYS_ARGB = 0,
    NVFBC_TOSYS_RGB,
    NVFBC_TOSYS_YYYYUV420p,
    NVFBC_TOSYS_RGB_PLANAR,
    NVFBC_TOSYS_XOR,
    NVFBC_TOSYS_YUV444p,
    NVFBC_TOSYS_BUF_FMT_LAST
} NVFBCToSysBufferFormat_c;

typedef enum {
    NVFBC_TOSYS_SOURCEMODE_FULL = 0,
    NVFBC_TOSYS_SOURCEMODE_SCALE,
    NVFBC_TOSYS_SOURCEMODE_CROP,
    NVFBC_TOSYS_SOURCEMODE_LAST
} NVFBCToSysGrabMode_c;

enum {
    NVFBC_TOSYS_NOFLAGS_C           = 0x0,
    NVFBC_TOSYS_NOWAIT_C            = 0x1,
    NVFBC_TOSYS_WAIT_WITH_TIMEOUT_C = 0x10
};

#define NVFBC_TO_SYS_C (0x1204)

typedef struct {
    NvU32 dwVersion;
    NvU32 bits;                /* bWithHWCursor:1, bDiffMap:1, bSep:1, rsvd:29 */
    NVFBCToSysBufferFormat_c eMode;
    NvU32 dwReserved1;
    void **ppBuffer;
    void **ppDiffMap;
    void  *hCursorCaptureEvent;
    NvU32 dwReserved[58];
    void *pReserved[29];
} NVFBC_TOSYS_SETUP_PARAMS_C;
#define NVFBC_TOSYS_SETUP_PARAMS_VER_C \
    NVFBC_STRUCT_VERSION(NVFBC_TOSYS_SETUP_PARAMS_C, 2)

typedef struct {
    NvU32 dwVersion;
    NvU32 dwFlags;
    NvU32 dwTargetWidth;
    NvU32 dwTargetHeight;
    NvU32 dwStartX;
    NvU32 dwStartY;
    NVFBCToSysGrabMode_c eGMode;
    NvU32 dwWaitTime;
    NvFBCFrameGrabInfo *pNvFBCFrameGrabInfo;
    NvU32 dwReserved[56];
    void *pReserved[31];
} NVFBC_TOSYS_GRAB_FRAME_PARAMS_C;
#define NVFBC_TOSYS_GRAB_FRAME_PARAMS_VER_C \
    NVFBC_STRUCT_VERSION(NVFBC_TOSYS_GRAB_FRAME_PARAMS_C, 1)

/* COM-in-C interface mirror */
typedef struct NvFBCToSys_c NvFBCToSys_c;
typedef struct {
    NVFBCRESULT (__stdcall *NvFBCToSysSetUp)(NvFBCToSys_c*, NVFBC_TOSYS_SETUP_PARAMS_C*);
    NVFBCRESULT (__stdcall *NvFBCToSysGrabFrame)(NvFBCToSys_c*, NVFBC_TOSYS_GRAB_FRAME_PARAMS_C*);
    NVFBCRESULT (__stdcall *NvFBCToSysCursorCapture)(NvFBCToSys_c*, void*);
    NVFBCRESULT (__stdcall *NvFBCToSysGPUBasedCPUSleep)(NvFBCToSys_c*, __int64);
    NVFBCRESULT (__stdcall *NvFBCToSysRelease)(NvFBCToSys_c*);
} NvFBCToSys_c_vtbl;
struct NvFBCToSys_c {
    const NvFBCToSys_c_vtbl* lpVtbl;
};

#endif /* VGPU_NVFBC_TOSYS_C_H */