MFCreateMFByteStreamOnStreamEx

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

HRESULT MFCreateMFByteStreamOnStreamEx(
    IUnknown* punkStream,
    IMFByteStream** ppByteStream
);

<DllImport("MFPlat.dll", ExactSpelling:=True)>
Public Shared Function MFCreateMFByteStreamOnStreamEx(
    punkStream As IntPtr,   ' IUnknown*
    ppByteStream As IntPtr   ' IMFByteStream** out
) As Integer
End Function

' punkStream : IUnknown*
' ppByteStream : IMFByteStream** out
Declare PtrSafe Function MFCreateMFByteStreamOnStreamEx Lib "mfplat" ( _
    ByVal punkStream As LongPtr, _
    ByVal ppByteStream 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

MFCreateMFByteStreamOnStreamEx = ctypes.windll.mfplat.MFCreateMFByteStreamOnStreamEx
MFCreateMFByteStreamOnStreamEx.restype = ctypes.c_int
MFCreateMFByteStreamOnStreamEx.argtypes = [
    ctypes.c_void_p,  # punkStream : IUnknown*
    ctypes.c_void_p,  # ppByteStream : IMFByteStream** out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('MFPlat.dll')
MFCreateMFByteStreamOnStreamEx = Fiddle::Function.new(
  lib['MFCreateMFByteStreamOnStreamEx'],
  [
    Fiddle::TYPE_VOIDP,  # punkStream : IUnknown*
    Fiddle::TYPE_VOIDP,  # ppByteStream : IMFByteStream** out
  ],
  Fiddle::TYPE_INT)

#[link(name = "mfplat")]
extern "system" {
    fn MFCreateMFByteStreamOnStreamEx(
        punkStream: *mut core::ffi::c_void,  // IUnknown*
        ppByteStream: *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 MFCreateMFByteStreamOnStreamEx(IntPtr punkStream, IntPtr ppByteStream);
"@
$api = Add-Type -MemberDefinition $sig -Name 'MFPlat_MFCreateMFByteStreamOnStreamEx' -Namespace Win32 -PassThru
# $api::MFCreateMFByteStreamOnStreamEx(punkStream, ppByteStream)

#uselib "MFPlat.dll"
#func global MFCreateMFByteStreamOnStreamEx "MFCreateMFByteStreamOnStreamEx" sptr, sptr
; MFCreateMFByteStreamOnStreamEx punkStream, ppByteStream   ; 戻り値は stat
; punkStream : IUnknown* -> "sptr"
; ppByteStream : 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 MFCreateMFByteStreamOnStreamEx "MFCreateMFByteStreamOnStreamEx" sptr, sptr
; res = MFCreateMFByteStreamOnStreamEx(punkStream, ppByteStream)
; punkStream : IUnknown* -> "sptr"
; ppByteStream : IMFByteStream** out -> "sptr"

; HRESULT MFCreateMFByteStreamOnStreamEx(IUnknown* punkStream, IMFByteStream** ppByteStream)
#uselib "MFPlat.dll"
#cfunc global MFCreateMFByteStreamOnStreamEx "MFCreateMFByteStreamOnStreamEx" intptr, intptr
; res = MFCreateMFByteStreamOnStreamEx(punkStream, ppByteStream)
; punkStream : IUnknown* -> "intptr"
; ppByteStream : IMFByteStream** out -> "intptr"

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

var (
	mfplat = windows.NewLazySystemDLL("MFPlat.dll")
	procMFCreateMFByteStreamOnStreamEx = mfplat.NewProc("MFCreateMFByteStreamOnStreamEx")
)

// punkStream (IUnknown*), ppByteStream (IMFByteStream** out)
r1, _, err := procMFCreateMFByteStreamOnStreamEx.Call(
	uintptr(punkStream),
	uintptr(ppByteStream),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function MFCreateMFByteStreamOnStreamEx(
  punkStream: Pointer;   // IUnknown*
  ppByteStream: Pointer   // IMFByteStream** out
): Integer; stdcall;
  external 'MFPlat.dll' name 'MFCreateMFByteStreamOnStreamEx';

result := DllCall("MFPlat\MFCreateMFByteStreamOnStreamEx"
    , "Ptr", punkStream   ; IUnknown*
    , "Ptr", ppByteStream   ; IMFByteStream** out
    , "Int")   ; return: HRESULT

●MFCreateMFByteStreamOnStreamEx(punkStream, ppByteStream) = DLL("MFPlat.dll", "int MFCreateMFByteStreamOnStreamEx(void*, void*)")
# 呼び出し: MFCreateMFByteStreamOnStreamEx(punkStream, ppByteStream)
# punkStream : IUnknown* -> "void*"
# ppByteStream : 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)。