MFCreateDeviceSource

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

HRESULT MFCreateDeviceSource(
    IMFAttributes* pAttributes,
    IMFMediaSource** ppSource
);

<DllImport("MF.dll", ExactSpelling:=True)>
Public Shared Function MFCreateDeviceSource(
    pAttributes As IntPtr,   ' IMFAttributes*
    ppSource As IntPtr   ' IMFMediaSource** out
) As Integer
End Function

' pAttributes : IMFAttributes*
' ppSource : IMFMediaSource** out
Declare PtrSafe Function MFCreateDeviceSource Lib "mf" ( _
    ByVal pAttributes As LongPtr, _
    ByVal ppSource 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

MFCreateDeviceSource = ctypes.windll.mf.MFCreateDeviceSource
MFCreateDeviceSource.restype = ctypes.c_int
MFCreateDeviceSource.argtypes = [
    ctypes.c_void_p,  # pAttributes : IMFAttributes*
    ctypes.c_void_p,  # ppSource : IMFMediaSource** out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('MF.dll')
MFCreateDeviceSource = Fiddle::Function.new(
  lib['MFCreateDeviceSource'],
  [
    Fiddle::TYPE_VOIDP,  # pAttributes : IMFAttributes*
    Fiddle::TYPE_VOIDP,  # ppSource : IMFMediaSource** out
  ],
  Fiddle::TYPE_INT)

#[link(name = "mf")]
extern "system" {
    fn MFCreateDeviceSource(
        pAttributes: *mut core::ffi::c_void,  // IMFAttributes*
        ppSource: *mut *mut core::ffi::c_void  // IMFMediaSource** out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("MF.dll")]
public static extern int MFCreateDeviceSource(IntPtr pAttributes, IntPtr ppSource);
"@
$api = Add-Type -MemberDefinition $sig -Name 'MF_MFCreateDeviceSource' -Namespace Win32 -PassThru
# $api::MFCreateDeviceSource(pAttributes, ppSource)

#uselib "MF.dll"
#func global MFCreateDeviceSource "MFCreateDeviceSource" sptr, sptr
; MFCreateDeviceSource pAttributes, ppSource   ; 戻り値は stat
; pAttributes : IMFAttributes* -> "sptr"
; ppSource : IMFMediaSource** 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 MFCreateDeviceSource "MFCreateDeviceSource" sptr, sptr
; res = MFCreateDeviceSource(pAttributes, ppSource)
; pAttributes : IMFAttributes* -> "sptr"
; ppSource : IMFMediaSource** out -> "sptr"

; HRESULT MFCreateDeviceSource(IMFAttributes* pAttributes, IMFMediaSource** ppSource)
#uselib "MF.dll"
#cfunc global MFCreateDeviceSource "MFCreateDeviceSource" intptr, intptr
; res = MFCreateDeviceSource(pAttributes, ppSource)
; pAttributes : IMFAttributes* -> "intptr"
; ppSource : IMFMediaSource** out -> "intptr"

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

var (
	mf = windows.NewLazySystemDLL("MF.dll")
	procMFCreateDeviceSource = mf.NewProc("MFCreateDeviceSource")
)

// pAttributes (IMFAttributes*), ppSource (IMFMediaSource** out)
r1, _, err := procMFCreateDeviceSource.Call(
	uintptr(pAttributes),
	uintptr(ppSource),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function MFCreateDeviceSource(
  pAttributes: Pointer;   // IMFAttributes*
  ppSource: Pointer   // IMFMediaSource** out
): Integer; stdcall;
  external 'MF.dll' name 'MFCreateDeviceSource';

result := DllCall("MF\MFCreateDeviceSource"
    , "Ptr", pAttributes   ; IMFAttributes*
    , "Ptr", ppSource   ; IMFMediaSource** out
    , "Int")   ; return: HRESULT

●MFCreateDeviceSource(pAttributes, ppSource) = DLL("MF.dll", "int MFCreateDeviceSource(void*, void*)")
# 呼び出し: MFCreateDeviceSource(pAttributes, ppSource)
# pAttributes : IMFAttributes* -> "void*"
# ppSource : IMFMediaSource** 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)。