MFCreateMFByteStreamOnStream

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

HRESULT MFCreateMFByteStreamOnStream(
    IStream* pStream,
    IMFByteStream** ppByteStream
);

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

' pStream : IStream*
' ppByteStream : IMFByteStream** out
Declare PtrSafe Function MFCreateMFByteStreamOnStream Lib "mfplat" ( _
    ByVal pStream 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

MFCreateMFByteStreamOnStream = ctypes.windll.mfplat.MFCreateMFByteStreamOnStream
MFCreateMFByteStreamOnStream.restype = ctypes.c_int
MFCreateMFByteStreamOnStream.argtypes = [
    ctypes.c_void_p,  # pStream : IStream*
    ctypes.c_void_p,  # ppByteStream : IMFByteStream** out
]

require 'fiddle'
require 'fiddle/import'

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

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

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

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

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

var (
	mfplat = windows.NewLazySystemDLL("MFPlat.dll")
	procMFCreateMFByteStreamOnStream = mfplat.NewProc("MFCreateMFByteStreamOnStream")
)

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

function MFCreateMFByteStreamOnStream(
  pStream: Pointer;   // IStream*
  ppByteStream: Pointer   // IMFByteStream** out
): Integer; stdcall;
  external 'MFPlat.dll' name 'MFCreateMFByteStreamOnStream';

result := DllCall("MFPlat\MFCreateMFByteStreamOnStream"
    , "Ptr", pStream   ; IStream*
    , "Ptr", ppByteStream   ; IMFByteStream** out
    , "Int")   ; return: HRESULT

●MFCreateMFByteStreamOnStream(pStream, ppByteStream) = DLL("MFPlat.dll", "int MFCreateMFByteStreamOnStream(void*, void*)")
# 呼び出し: MFCreateMFByteStreamOnStream(pStream, ppByteStream)
# pStream : IStream* -> "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)。