MFCreateWaveFormatExFromMFMediaType

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

HRESULT MFCreateWaveFormatExFromMFMediaType(
    IMFMediaType* pMFType,
    WAVEFORMATEX** ppWF,
    DWORD* pcbSize,   // optional
    DWORD Flags
);

<DllImport("MFPlat.dll", ExactSpelling:=True)>
Public Shared Function MFCreateWaveFormatExFromMFMediaType(
    pMFType As IntPtr,   ' IMFMediaType*
    ppWF As IntPtr,   ' WAVEFORMATEX** out
    pcbSize As IntPtr,   ' DWORD* optional, out
    Flags As UInteger   ' DWORD
) As Integer
End Function

' pMFType : IMFMediaType*
' ppWF : WAVEFORMATEX** out
' pcbSize : DWORD* optional, out
' Flags : DWORD
Declare PtrSafe Function MFCreateWaveFormatExFromMFMediaType Lib "mfplat" ( _
    ByVal pMFType As LongPtr, _
    ByVal ppWF As LongPtr, _
    ByVal pcbSize As LongPtr, _
    ByVal Flags As Long) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

MFCreateWaveFormatExFromMFMediaType = ctypes.windll.mfplat.MFCreateWaveFormatExFromMFMediaType
MFCreateWaveFormatExFromMFMediaType.restype = ctypes.c_int
MFCreateWaveFormatExFromMFMediaType.argtypes = [
    ctypes.c_void_p,  # pMFType : IMFMediaType*
    ctypes.c_void_p,  # ppWF : WAVEFORMATEX** out
    ctypes.POINTER(wintypes.DWORD),  # pcbSize : DWORD* optional, out
    wintypes.DWORD,  # Flags : DWORD
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('MFPlat.dll')
MFCreateWaveFormatExFromMFMediaType = Fiddle::Function.new(
  lib['MFCreateWaveFormatExFromMFMediaType'],
  [
    Fiddle::TYPE_VOIDP,  # pMFType : IMFMediaType*
    Fiddle::TYPE_VOIDP,  # ppWF : WAVEFORMATEX** out
    Fiddle::TYPE_VOIDP,  # pcbSize : DWORD* optional, out
    -Fiddle::TYPE_INT,  # Flags : DWORD
  ],
  Fiddle::TYPE_INT)

#[link(name = "mfplat")]
extern "system" {
    fn MFCreateWaveFormatExFromMFMediaType(
        pMFType: *mut core::ffi::c_void,  // IMFMediaType*
        ppWF: *mut *mut WAVEFORMATEX,  // WAVEFORMATEX** out
        pcbSize: *mut u32,  // DWORD* optional, out
        Flags: u32  // DWORD
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("MFPlat.dll")]
public static extern int MFCreateWaveFormatExFromMFMediaType(IntPtr pMFType, IntPtr ppWF, IntPtr pcbSize, uint Flags);
"@
$api = Add-Type -MemberDefinition $sig -Name 'MFPlat_MFCreateWaveFormatExFromMFMediaType' -Namespace Win32 -PassThru
# $api::MFCreateWaveFormatExFromMFMediaType(pMFType, ppWF, pcbSize, Flags)

#uselib "MFPlat.dll"
#func global MFCreateWaveFormatExFromMFMediaType "MFCreateWaveFormatExFromMFMediaType" sptr, sptr, sptr, sptr
; MFCreateWaveFormatExFromMFMediaType pMFType, varptr(ppWF), varptr(pcbSize), Flags   ; 戻り値は stat
; pMFType : IMFMediaType* -> "sptr"
; ppWF : WAVEFORMATEX** out -> "sptr"
; pcbSize : DWORD* optional, out -> "sptr"
; Flags : DWORD -> "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 MFCreateWaveFormatExFromMFMediaType "MFCreateWaveFormatExFromMFMediaType" sptr, var, var, int
; res = MFCreateWaveFormatExFromMFMediaType(pMFType, ppWF, pcbSize, Flags)
; pMFType : IMFMediaType* -> "sptr"
; ppWF : WAVEFORMATEX** out -> "var"
; pcbSize : DWORD* optional, out -> "var"
; Flags : DWORD -> "int"
; ※出力/バッファ引数は var 方式(変数を直接渡す)。varptr 方式にも切替可。

; HRESULT MFCreateWaveFormatExFromMFMediaType(IMFMediaType* pMFType, WAVEFORMATEX** ppWF, DWORD* pcbSize, DWORD Flags)
#uselib "MFPlat.dll"
#cfunc global MFCreateWaveFormatExFromMFMediaType "MFCreateWaveFormatExFromMFMediaType" intptr, var, var, int
; res = MFCreateWaveFormatExFromMFMediaType(pMFType, ppWF, pcbSize, Flags)
; pMFType : IMFMediaType* -> "intptr"
; ppWF : WAVEFORMATEX** out -> "var"
; pcbSize : DWORD* optional, out -> "var"
; Flags : DWORD -> "int"
; ※出力/バッファ引数は var 方式(変数を直接渡す)。varptr 方式にも切替可。

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

var (
	mfplat = windows.NewLazySystemDLL("MFPlat.dll")
	procMFCreateWaveFormatExFromMFMediaType = mfplat.NewProc("MFCreateWaveFormatExFromMFMediaType")
)

// pMFType (IMFMediaType*), ppWF (WAVEFORMATEX** out), pcbSize (DWORD* optional, out), Flags (DWORD)
r1, _, err := procMFCreateWaveFormatExFromMFMediaType.Call(
	uintptr(pMFType),
	uintptr(ppWF),
	uintptr(pcbSize),
	uintptr(Flags),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function MFCreateWaveFormatExFromMFMediaType(
  pMFType: Pointer;   // IMFMediaType*
  ppWF: Pointer;   // WAVEFORMATEX** out
  pcbSize: Pointer;   // DWORD* optional, out
  Flags: DWORD   // DWORD
): Integer; stdcall;
  external 'MFPlat.dll' name 'MFCreateWaveFormatExFromMFMediaType';

result := DllCall("MFPlat\MFCreateWaveFormatExFromMFMediaType"
    , "Ptr", pMFType   ; IMFMediaType*
    , "Ptr", ppWF   ; WAVEFORMATEX** out
    , "Ptr", pcbSize   ; DWORD* optional, out
    , "UInt", Flags   ; DWORD
    , "Int")   ; return: HRESULT

●MFCreateWaveFormatExFromMFMediaType(pMFType, ppWF, pcbSize, Flags) = DLL("MFPlat.dll", "int MFCreateWaveFormatExFromMFMediaType(void*, void*, void*, dword)")
# 呼び出し: MFCreateWaveFormatExFromMFMediaType(pMFType, ppWF, pcbSize, Flags)
# pMFType : IMFMediaType* -> "void*"
# ppWF : WAVEFORMATEX** out -> "void*"
# pcbSize : DWORD* optional, out -> "void*"
# Flags : DWORD -> "dword"
# 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)。