MFCreateMFByteStreamWrapper

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

HRESULT MFCreateMFByteStreamWrapper(
    IMFByteStream* pStream,
    IMFByteStream** ppStreamWrapper
);

<DllImport("MFPlat.dll", ExactSpelling:=True)>
Public Shared Function MFCreateMFByteStreamWrapper(
    pStream As IntPtr,   ' IMFByteStream*
    ppStreamWrapper As IntPtr   ' IMFByteStream** out
) As Integer
End Function

' pStream : IMFByteStream*
' ppStreamWrapper : IMFByteStream** out
Declare PtrSafe Function MFCreateMFByteStreamWrapper Lib "mfplat" ( _
    ByVal pStream As LongPtr, _
    ByVal ppStreamWrapper 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

MFCreateMFByteStreamWrapper = ctypes.windll.mfplat.MFCreateMFByteStreamWrapper
MFCreateMFByteStreamWrapper.restype = ctypes.c_int
MFCreateMFByteStreamWrapper.argtypes = [
    ctypes.c_void_p,  # pStream : IMFByteStream*
    ctypes.c_void_p,  # ppStreamWrapper : IMFByteStream** out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('MFPlat.dll')
MFCreateMFByteStreamWrapper = Fiddle::Function.new(
  lib['MFCreateMFByteStreamWrapper'],
  [
    Fiddle::TYPE_VOIDP,  # pStream : IMFByteStream*
    Fiddle::TYPE_VOIDP,  # ppStreamWrapper : IMFByteStream** out
  ],
  Fiddle::TYPE_INT)

#[link(name = "mfplat")]
extern "system" {
    fn MFCreateMFByteStreamWrapper(
        pStream: *mut core::ffi::c_void,  // IMFByteStream*
        ppStreamWrapper: *mut *mut core::ffi::c_void  // IMFByteStream** out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("MFPlat.dll")]
public static extern int MFCreateMFByteStreamWrapper(IntPtr pStream, IntPtr ppStreamWrapper);
"@
$api = Add-Type -MemberDefinition $sig -Name 'MFPlat_MFCreateMFByteStreamWrapper' -Namespace Win32 -PassThru
# $api::MFCreateMFByteStreamWrapper(pStream, ppStreamWrapper)

#uselib "MFPlat.dll"
#func global MFCreateMFByteStreamWrapper "MFCreateMFByteStreamWrapper" sptr, sptr
; MFCreateMFByteStreamWrapper pStream, ppStreamWrapper   ; 戻り値は stat
; pStream : IMFByteStream* -> "sptr"
; ppStreamWrapper : IMFByteStream** 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 "MFPlat.dll"
#cfunc global MFCreateMFByteStreamWrapper "MFCreateMFByteStreamWrapper" sptr, sptr
; res = MFCreateMFByteStreamWrapper(pStream, ppStreamWrapper)
; pStream : IMFByteStream* -> "sptr"
; ppStreamWrapper : IMFByteStream** out -> "sptr"

; HRESULT MFCreateMFByteStreamWrapper(IMFByteStream* pStream, IMFByteStream** ppStreamWrapper)
#uselib "MFPlat.dll"
#cfunc global MFCreateMFByteStreamWrapper "MFCreateMFByteStreamWrapper" intptr, intptr
; res = MFCreateMFByteStreamWrapper(pStream, ppStreamWrapper)
; pStream : IMFByteStream* -> "intptr"
; ppStreamWrapper : IMFByteStream** out -> "intptr"

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

var (
	mfplat = windows.NewLazySystemDLL("MFPlat.dll")
	procMFCreateMFByteStreamWrapper = mfplat.NewProc("MFCreateMFByteStreamWrapper")
)

// pStream (IMFByteStream*), ppStreamWrapper (IMFByteStream** out)
r1, _, err := procMFCreateMFByteStreamWrapper.Call(
	uintptr(pStream),
	uintptr(ppStreamWrapper),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function MFCreateMFByteStreamWrapper(
  pStream: Pointer;   // IMFByteStream*
  ppStreamWrapper: Pointer   // IMFByteStream** out
): Integer; stdcall;
  external 'MFPlat.dll' name 'MFCreateMFByteStreamWrapper';

result := DllCall("MFPlat\MFCreateMFByteStreamWrapper"
    , "Ptr", pStream   ; IMFByteStream*
    , "Ptr", ppStreamWrapper   ; IMFByteStream** out
    , "Int")   ; return: HRESULT

●MFCreateMFByteStreamWrapper(pStream, ppStreamWrapper) = DLL("MFPlat.dll", "int MFCreateMFByteStreamWrapper(void*, void*)")
# 呼び出し: MFCreateMFByteStreamWrapper(pStream, ppStreamWrapper)
# pStream : IMFByteStream* -> "void*"
# ppStreamWrapper : IMFByteStream** 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)。