MFCreatePresentationDescriptor

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

HRESULT MFCreatePresentationDescriptor(
    DWORD cStreamDescriptors,
    IMFStreamDescriptor** apStreamDescriptors,   // optional
    IMFPresentationDescriptor** ppPresentationDescriptor
);

<DllImport("MFPlat.dll", ExactSpelling:=True)>
Public Shared Function MFCreatePresentationDescriptor(
    cStreamDescriptors As UInteger,   ' DWORD
    apStreamDescriptors As IntPtr,   ' IMFStreamDescriptor** optional
    ppPresentationDescriptor As IntPtr   ' IMFPresentationDescriptor** out
) As Integer
End Function

' cStreamDescriptors : DWORD
' apStreamDescriptors : IMFStreamDescriptor** optional
' ppPresentationDescriptor : IMFPresentationDescriptor** out
Declare PtrSafe Function MFCreatePresentationDescriptor Lib "mfplat" ( _
    ByVal cStreamDescriptors As Long, _
    ByVal apStreamDescriptors As LongPtr, _
    ByVal ppPresentationDescriptor 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

MFCreatePresentationDescriptor = ctypes.windll.mfplat.MFCreatePresentationDescriptor
MFCreatePresentationDescriptor.restype = ctypes.c_int
MFCreatePresentationDescriptor.argtypes = [
    wintypes.DWORD,  # cStreamDescriptors : DWORD
    ctypes.c_void_p,  # apStreamDescriptors : IMFStreamDescriptor** optional
    ctypes.c_void_p,  # ppPresentationDescriptor : IMFPresentationDescriptor** out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('MFPlat.dll')
MFCreatePresentationDescriptor = Fiddle::Function.new(
  lib['MFCreatePresentationDescriptor'],
  [
    -Fiddle::TYPE_INT,  # cStreamDescriptors : DWORD
    Fiddle::TYPE_VOIDP,  # apStreamDescriptors : IMFStreamDescriptor** optional
    Fiddle::TYPE_VOIDP,  # ppPresentationDescriptor : IMFPresentationDescriptor** out
  ],
  Fiddle::TYPE_INT)

#[link(name = "mfplat")]
extern "system" {
    fn MFCreatePresentationDescriptor(
        cStreamDescriptors: u32,  // DWORD
        apStreamDescriptors: *mut *mut core::ffi::c_void,  // IMFStreamDescriptor** optional
        ppPresentationDescriptor: *mut *mut core::ffi::c_void  // IMFPresentationDescriptor** out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("MFPlat.dll")]
public static extern int MFCreatePresentationDescriptor(uint cStreamDescriptors, IntPtr apStreamDescriptors, IntPtr ppPresentationDescriptor);
"@
$api = Add-Type -MemberDefinition $sig -Name 'MFPlat_MFCreatePresentationDescriptor' -Namespace Win32 -PassThru
# $api::MFCreatePresentationDescriptor(cStreamDescriptors, apStreamDescriptors, ppPresentationDescriptor)

#uselib "MFPlat.dll"
#func global MFCreatePresentationDescriptor "MFCreatePresentationDescriptor" sptr, sptr, sptr
; MFCreatePresentationDescriptor cStreamDescriptors, apStreamDescriptors, ppPresentationDescriptor   ; 戻り値は stat
; cStreamDescriptors : DWORD -> "sptr"
; apStreamDescriptors : IMFStreamDescriptor** optional -> "sptr"
; ppPresentationDescriptor : IMFPresentationDescriptor** 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 MFCreatePresentationDescriptor "MFCreatePresentationDescriptor" int, sptr, sptr
; res = MFCreatePresentationDescriptor(cStreamDescriptors, apStreamDescriptors, ppPresentationDescriptor)
; cStreamDescriptors : DWORD -> "int"
; apStreamDescriptors : IMFStreamDescriptor** optional -> "sptr"
; ppPresentationDescriptor : IMFPresentationDescriptor** out -> "sptr"

; HRESULT MFCreatePresentationDescriptor(DWORD cStreamDescriptors, IMFStreamDescriptor** apStreamDescriptors, IMFPresentationDescriptor** ppPresentationDescriptor)
#uselib "MFPlat.dll"
#cfunc global MFCreatePresentationDescriptor "MFCreatePresentationDescriptor" int, intptr, intptr
; res = MFCreatePresentationDescriptor(cStreamDescriptors, apStreamDescriptors, ppPresentationDescriptor)
; cStreamDescriptors : DWORD -> "int"
; apStreamDescriptors : IMFStreamDescriptor** optional -> "intptr"
; ppPresentationDescriptor : IMFPresentationDescriptor** out -> "intptr"

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

var (
	mfplat = windows.NewLazySystemDLL("MFPlat.dll")
	procMFCreatePresentationDescriptor = mfplat.NewProc("MFCreatePresentationDescriptor")
)

// cStreamDescriptors (DWORD), apStreamDescriptors (IMFStreamDescriptor** optional), ppPresentationDescriptor (IMFPresentationDescriptor** out)
r1, _, err := procMFCreatePresentationDescriptor.Call(
	uintptr(cStreamDescriptors),
	uintptr(apStreamDescriptors),
	uintptr(ppPresentationDescriptor),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function MFCreatePresentationDescriptor(
  cStreamDescriptors: DWORD;   // DWORD
  apStreamDescriptors: Pointer;   // IMFStreamDescriptor** optional
  ppPresentationDescriptor: Pointer   // IMFPresentationDescriptor** out
): Integer; stdcall;
  external 'MFPlat.dll' name 'MFCreatePresentationDescriptor';

result := DllCall("MFPlat\MFCreatePresentationDescriptor"
    , "UInt", cStreamDescriptors   ; DWORD
    , "Ptr", apStreamDescriptors   ; IMFStreamDescriptor** optional
    , "Ptr", ppPresentationDescriptor   ; IMFPresentationDescriptor** out
    , "Int")   ; return: HRESULT

●MFCreatePresentationDescriptor(cStreamDescriptors, apStreamDescriptors, ppPresentationDescriptor) = DLL("MFPlat.dll", "int MFCreatePresentationDescriptor(dword, void*, void*)")
# 呼び出し: MFCreatePresentationDescriptor(cStreamDescriptors, apStreamDescriptors, ppPresentationDescriptor)
# cStreamDescriptors : DWORD -> "dword"
# apStreamDescriptors : IMFStreamDescriptor** optional -> "void*"
# ppPresentationDescriptor : IMFPresentationDescriptor** 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)。