MFSplitSample

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

HRESULT MFSplitSample(
    IMFSample* pSample,
    IMFSample** pOutputSamples,
    DWORD dwOutputSampleMaxCount,
    DWORD* pdwOutputSampleCount
);

<DllImport("MFPlat.dll", ExactSpelling:=True)>
Public Shared Function MFSplitSample(
    pSample As IntPtr,   ' IMFSample*
    pOutputSamples As IntPtr,   ' IMFSample** out
    dwOutputSampleMaxCount As UInteger,   ' DWORD
    <Out> ByRef pdwOutputSampleCount As UInteger   ' DWORD* out
) As Integer
End Function

' pSample : IMFSample*
' pOutputSamples : IMFSample** out
' dwOutputSampleMaxCount : DWORD
' pdwOutputSampleCount : DWORD* out
Declare PtrSafe Function MFSplitSample Lib "mfplat" ( _
    ByVal pSample As LongPtr, _
    ByVal pOutputSamples As LongPtr, _
    ByVal dwOutputSampleMaxCount As Long, _
    ByRef pdwOutputSampleCount 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

MFSplitSample = ctypes.windll.mfplat.MFSplitSample
MFSplitSample.restype = ctypes.c_int
MFSplitSample.argtypes = [
    ctypes.c_void_p,  # pSample : IMFSample*
    ctypes.c_void_p,  # pOutputSamples : IMFSample** out
    wintypes.DWORD,  # dwOutputSampleMaxCount : DWORD
    ctypes.POINTER(wintypes.DWORD),  # pdwOutputSampleCount : DWORD* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('MFPlat.dll')
MFSplitSample = Fiddle::Function.new(
  lib['MFSplitSample'],
  [
    Fiddle::TYPE_VOIDP,  # pSample : IMFSample*
    Fiddle::TYPE_VOIDP,  # pOutputSamples : IMFSample** out
    -Fiddle::TYPE_INT,  # dwOutputSampleMaxCount : DWORD
    Fiddle::TYPE_VOIDP,  # pdwOutputSampleCount : DWORD* out
  ],
  Fiddle::TYPE_INT)

#[link(name = "mfplat")]
extern "system" {
    fn MFSplitSample(
        pSample: *mut core::ffi::c_void,  // IMFSample*
        pOutputSamples: *mut *mut core::ffi::c_void,  // IMFSample** out
        dwOutputSampleMaxCount: u32,  // DWORD
        pdwOutputSampleCount: *mut u32  // DWORD* out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("MFPlat.dll")]
public static extern int MFSplitSample(IntPtr pSample, IntPtr pOutputSamples, uint dwOutputSampleMaxCount, out uint pdwOutputSampleCount);
"@
$api = Add-Type -MemberDefinition $sig -Name 'MFPlat_MFSplitSample' -Namespace Win32 -PassThru
# $api::MFSplitSample(pSample, pOutputSamples, dwOutputSampleMaxCount, pdwOutputSampleCount)

#uselib "MFPlat.dll"
#func global MFSplitSample "MFSplitSample" sptr, sptr, sptr, sptr
; MFSplitSample pSample, pOutputSamples, dwOutputSampleMaxCount, varptr(pdwOutputSampleCount)   ; 戻り値は stat
; pSample : IMFSample* -> "sptr"
; pOutputSamples : IMFSample** out -> "sptr"
; dwOutputSampleMaxCount : DWORD -> "sptr"
; pdwOutputSampleCount : DWORD* 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 MFSplitSample "MFSplitSample" sptr, sptr, int, var
; res = MFSplitSample(pSample, pOutputSamples, dwOutputSampleMaxCount, pdwOutputSampleCount)
; pSample : IMFSample* -> "sptr"
; pOutputSamples : IMFSample** out -> "sptr"
; dwOutputSampleMaxCount : DWORD -> "int"
; pdwOutputSampleCount : DWORD* out -> "var"
; ※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 MFSplitSample(IMFSample* pSample, IMFSample** pOutputSamples, DWORD dwOutputSampleMaxCount, DWORD* pdwOutputSampleCount)
#uselib "MFPlat.dll"
#cfunc global MFSplitSample "MFSplitSample" intptr, intptr, int, var
; res = MFSplitSample(pSample, pOutputSamples, dwOutputSampleMaxCount, pdwOutputSampleCount)
; pSample : IMFSample* -> "intptr"
; pOutputSamples : IMFSample** out -> "intptr"
; dwOutputSampleMaxCount : DWORD -> "int"
; pdwOutputSampleCount : DWORD* out -> "var"
; ※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")
	procMFSplitSample = mfplat.NewProc("MFSplitSample")
)

// pSample (IMFSample*), pOutputSamples (IMFSample** out), dwOutputSampleMaxCount (DWORD), pdwOutputSampleCount (DWORD* out)
r1, _, err := procMFSplitSample.Call(
	uintptr(pSample),
	uintptr(pOutputSamples),
	uintptr(dwOutputSampleMaxCount),
	uintptr(pdwOutputSampleCount),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function MFSplitSample(
  pSample: Pointer;   // IMFSample*
  pOutputSamples: Pointer;   // IMFSample** out
  dwOutputSampleMaxCount: DWORD;   // DWORD
  pdwOutputSampleCount: Pointer   // DWORD* out
): Integer; stdcall;
  external 'MFPlat.dll' name 'MFSplitSample';

result := DllCall("MFPlat\MFSplitSample"
    , "Ptr", pSample   ; IMFSample*
    , "Ptr", pOutputSamples   ; IMFSample** out
    , "UInt", dwOutputSampleMaxCount   ; DWORD
    , "Ptr", pdwOutputSampleCount   ; DWORD* out
    , "Int")   ; return: HRESULT

●MFSplitSample(pSample, pOutputSamples, dwOutputSampleMaxCount, pdwOutputSampleCount) = DLL("MFPlat.dll", "int MFSplitSample(void*, void*, dword, void*)")
# 呼び出し: MFSplitSample(pSample, pOutputSamples, dwOutputSampleMaxCount, pdwOutputSampleCount)
# pSample : IMFSample* -> "void*"
# pOutputSamples : IMFSample** out -> "void*"
# dwOutputSampleMaxCount : DWORD -> "dword"
# pdwOutputSampleCount : DWORD* 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)。