MFGetTopoNodeCurrentType

// MF.dll
#include <windows.h>

HRESULT MFGetTopoNodeCurrentType(
    IMFTopologyNode* pNode,
    DWORD dwStreamIndex,
    BOOL fOutput,
    IMFMediaType** ppType
);

<DllImport("MF.dll", ExactSpelling:=True)>
Public Shared Function MFGetTopoNodeCurrentType(
    pNode As IntPtr,   ' IMFTopologyNode*
    dwStreamIndex As UInteger,   ' DWORD
    fOutput As Boolean,   ' BOOL
    ppType As IntPtr   ' IMFMediaType** out
) As Integer
End Function

' pNode : IMFTopologyNode*
' dwStreamIndex : DWORD
' fOutput : BOOL
' ppType : IMFMediaType** out
Declare PtrSafe Function MFGetTopoNodeCurrentType Lib "mf" ( _
    ByVal pNode As LongPtr, _
    ByVal dwStreamIndex As Long, _
    ByVal fOutput As Long, _
    ByVal ppType As LongPtr) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

MFGetTopoNodeCurrentType = ctypes.windll.mf.MFGetTopoNodeCurrentType
MFGetTopoNodeCurrentType.restype = ctypes.c_int
MFGetTopoNodeCurrentType.argtypes = [
    ctypes.c_void_p,  # pNode : IMFTopologyNode*
    wintypes.DWORD,  # dwStreamIndex : DWORD
    wintypes.BOOL,  # fOutput : BOOL
    ctypes.c_void_p,  # ppType : IMFMediaType** out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('MF.dll')
MFGetTopoNodeCurrentType = Fiddle::Function.new(
  lib['MFGetTopoNodeCurrentType'],
  [
    Fiddle::TYPE_VOIDP,  # pNode : IMFTopologyNode*
    -Fiddle::TYPE_INT,  # dwStreamIndex : DWORD
    Fiddle::TYPE_INT,  # fOutput : BOOL
    Fiddle::TYPE_VOIDP,  # ppType : IMFMediaType** out
  ],
  Fiddle::TYPE_INT)

#[link(name = "mf")]
extern "system" {
    fn MFGetTopoNodeCurrentType(
        pNode: *mut core::ffi::c_void,  // IMFTopologyNode*
        dwStreamIndex: u32,  // DWORD
        fOutput: i32,  // BOOL
        ppType: *mut *mut core::ffi::c_void  // IMFMediaType** out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("MF.dll")]
public static extern int MFGetTopoNodeCurrentType(IntPtr pNode, uint dwStreamIndex, bool fOutput, IntPtr ppType);
"@
$api = Add-Type -MemberDefinition $sig -Name 'MF_MFGetTopoNodeCurrentType' -Namespace Win32 -PassThru
# $api::MFGetTopoNodeCurrentType(pNode, dwStreamIndex, fOutput, ppType)

#uselib "MF.dll"
#func global MFGetTopoNodeCurrentType "MFGetTopoNodeCurrentType" sptr, sptr, sptr, sptr
; MFGetTopoNodeCurrentType pNode, dwStreamIndex, fOutput, ppType   ; 戻り値は stat
; pNode : IMFTopologyNode* -> "sptr"
; dwStreamIndex : DWORD -> "sptr"
; fOutput : BOOL -> "sptr"
; ppType : IMFMediaType** out -> "sptr"
; ※HSP3.7は #func のため戻り値はシステム変数 stat に格納されます。

#uselib "MF.dll"
#cfunc global MFGetTopoNodeCurrentType "MFGetTopoNodeCurrentType" sptr, int, int, sptr
; res = MFGetTopoNodeCurrentType(pNode, dwStreamIndex, fOutput, ppType)
; pNode : IMFTopologyNode* -> "sptr"
; dwStreamIndex : DWORD -> "int"
; fOutput : BOOL -> "int"
; ppType : IMFMediaType** out -> "sptr"

; HRESULT MFGetTopoNodeCurrentType(IMFTopologyNode* pNode, DWORD dwStreamIndex, BOOL fOutput, IMFMediaType** ppType)
#uselib "MF.dll"
#cfunc global MFGetTopoNodeCurrentType "MFGetTopoNodeCurrentType" intptr, int, int, intptr
; res = MFGetTopoNodeCurrentType(pNode, dwStreamIndex, fOutput, ppType)
; pNode : IMFTopologyNode* -> "intptr"
; dwStreamIndex : DWORD -> "int"
; fOutput : BOOL -> "int"
; ppType : IMFMediaType** out -> "intptr"

import (
	"golang.org/x/sys/windows"
	"unsafe"
)

var (
	mf = windows.NewLazySystemDLL("MF.dll")
	procMFGetTopoNodeCurrentType = mf.NewProc("MFGetTopoNodeCurrentType")
)

// pNode (IMFTopologyNode*), dwStreamIndex (DWORD), fOutput (BOOL), ppType (IMFMediaType** out)
r1, _, err := procMFGetTopoNodeCurrentType.Call(
	uintptr(pNode),
	uintptr(dwStreamIndex),
	uintptr(fOutput),
	uintptr(ppType),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function MFGetTopoNodeCurrentType(
  pNode: Pointer;   // IMFTopologyNode*
  dwStreamIndex: DWORD;   // DWORD
  fOutput: BOOL;   // BOOL
  ppType: Pointer   // IMFMediaType** out
): Integer; stdcall;
  external 'MF.dll' name 'MFGetTopoNodeCurrentType';

result := DllCall("MF\MFGetTopoNodeCurrentType"
    , "Ptr", pNode   ; IMFTopologyNode*
    , "UInt", dwStreamIndex   ; DWORD
    , "Int", fOutput   ; BOOL
    , "Ptr", ppType   ; IMFMediaType** out
    , "Int")   ; return: HRESULT

●MFGetTopoNodeCurrentType(pNode, dwStreamIndex, fOutput, ppType) = DLL("MF.dll", "int MFGetTopoNodeCurrentType(void*, dword, bool, void*)")
# 呼び出し: MFGetTopoNodeCurrentType(pNode, dwStreamIndex, fOutput, ppType)
# pNode : IMFTopologyNode* -> "void*"
# dwStreamIndex : DWORD -> "dword"
# fOutput : BOOL -> "bool"
# ppType : IMFMediaType** out -> "void*"
# なでしこ1は32bit・ANSI(Shift_JIS)。文字列=char*(ANSI)、ポインタ/ハンドル=void*(4byte)。