MFInitMediaTypeFromMPEG2VideoInfo

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

HRESULT MFInitMediaTypeFromMPEG2VideoInfo(
    IMFMediaType* pMFType,
    const MPEG2VIDEOINFO* pMP2VI,
    DWORD cbBufSize,
    const GUID* pSubtype   // optional
);

<DllImport("MFPlat.dll", ExactSpelling:=True)>
Public Shared Function MFInitMediaTypeFromMPEG2VideoInfo(
    pMFType As IntPtr,   ' IMFMediaType*
    pMP2VI As IntPtr,   ' MPEG2VIDEOINFO*
    cbBufSize As UInteger,   ' DWORD
    pSubtype As IntPtr   ' GUID* optional
) As Integer
End Function

' pMFType : IMFMediaType*
' pMP2VI : MPEG2VIDEOINFO*
' cbBufSize : DWORD
' pSubtype : GUID* optional
Declare PtrSafe Function MFInitMediaTypeFromMPEG2VideoInfo Lib "mfplat" ( _
    ByVal pMFType As LongPtr, _
    ByVal pMP2VI As LongPtr, _
    ByVal cbBufSize As Long, _
    ByVal pSubtype 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

MFInitMediaTypeFromMPEG2VideoInfo = ctypes.windll.mfplat.MFInitMediaTypeFromMPEG2VideoInfo
MFInitMediaTypeFromMPEG2VideoInfo.restype = ctypes.c_int
MFInitMediaTypeFromMPEG2VideoInfo.argtypes = [
    ctypes.c_void_p,  # pMFType : IMFMediaType*
    ctypes.c_void_p,  # pMP2VI : MPEG2VIDEOINFO*
    wintypes.DWORD,  # cbBufSize : DWORD
    ctypes.c_void_p,  # pSubtype : GUID* optional
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('MFPlat.dll')
MFInitMediaTypeFromMPEG2VideoInfo = Fiddle::Function.new(
  lib['MFInitMediaTypeFromMPEG2VideoInfo'],
  [
    Fiddle::TYPE_VOIDP,  # pMFType : IMFMediaType*
    Fiddle::TYPE_VOIDP,  # pMP2VI : MPEG2VIDEOINFO*
    -Fiddle::TYPE_INT,  # cbBufSize : DWORD
    Fiddle::TYPE_VOIDP,  # pSubtype : GUID* optional
  ],
  Fiddle::TYPE_INT)

#[link(name = "mfplat")]
extern "system" {
    fn MFInitMediaTypeFromMPEG2VideoInfo(
        pMFType: *mut core::ffi::c_void,  // IMFMediaType*
        pMP2VI: *const MPEG2VIDEOINFO,  // MPEG2VIDEOINFO*
        cbBufSize: u32,  // DWORD
        pSubtype: *const GUID  // GUID* optional
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("MFPlat.dll")]
public static extern int MFInitMediaTypeFromMPEG2VideoInfo(IntPtr pMFType, IntPtr pMP2VI, uint cbBufSize, IntPtr pSubtype);
"@
$api = Add-Type -MemberDefinition $sig -Name 'MFPlat_MFInitMediaTypeFromMPEG2VideoInfo' -Namespace Win32 -PassThru
# $api::MFInitMediaTypeFromMPEG2VideoInfo(pMFType, pMP2VI, cbBufSize, pSubtype)

#uselib "MFPlat.dll"
#func global MFInitMediaTypeFromMPEG2VideoInfo "MFInitMediaTypeFromMPEG2VideoInfo" sptr, sptr, sptr, sptr
; MFInitMediaTypeFromMPEG2VideoInfo pMFType, varptr(pMP2VI), cbBufSize, varptr(pSubtype)   ; 戻り値は stat
; pMFType : IMFMediaType* -> "sptr"
; pMP2VI : MPEG2VIDEOINFO* -> "sptr"
; cbBufSize : DWORD -> "sptr"
; pSubtype : GUID* optional -> "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 MFInitMediaTypeFromMPEG2VideoInfo "MFInitMediaTypeFromMPEG2VideoInfo" sptr, var, int, var
; res = MFInitMediaTypeFromMPEG2VideoInfo(pMFType, pMP2VI, cbBufSize, pSubtype)
; pMFType : IMFMediaType* -> "sptr"
; pMP2VI : MPEG2VIDEOINFO* -> "var"
; cbBufSize : DWORD -> "int"
; pSubtype : GUID* optional -> "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 MFInitMediaTypeFromMPEG2VideoInfo(IMFMediaType* pMFType, MPEG2VIDEOINFO* pMP2VI, DWORD cbBufSize, GUID* pSubtype)
#uselib "MFPlat.dll"
#cfunc global MFInitMediaTypeFromMPEG2VideoInfo "MFInitMediaTypeFromMPEG2VideoInfo" intptr, var, int, var
; res = MFInitMediaTypeFromMPEG2VideoInfo(pMFType, pMP2VI, cbBufSize, pSubtype)
; pMFType : IMFMediaType* -> "intptr"
; pMP2VI : MPEG2VIDEOINFO* -> "var"
; cbBufSize : DWORD -> "int"
; pSubtype : GUID* optional -> "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")
	procMFInitMediaTypeFromMPEG2VideoInfo = mfplat.NewProc("MFInitMediaTypeFromMPEG2VideoInfo")
)

// pMFType (IMFMediaType*), pMP2VI (MPEG2VIDEOINFO*), cbBufSize (DWORD), pSubtype (GUID* optional)
r1, _, err := procMFInitMediaTypeFromMPEG2VideoInfo.Call(
	uintptr(pMFType),
	uintptr(pMP2VI),
	uintptr(cbBufSize),
	uintptr(pSubtype),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function MFInitMediaTypeFromMPEG2VideoInfo(
  pMFType: Pointer;   // IMFMediaType*
  pMP2VI: Pointer;   // MPEG2VIDEOINFO*
  cbBufSize: DWORD;   // DWORD
  pSubtype: PGUID   // GUID* optional
): Integer; stdcall;
  external 'MFPlat.dll' name 'MFInitMediaTypeFromMPEG2VideoInfo';

result := DllCall("MFPlat\MFInitMediaTypeFromMPEG2VideoInfo"
    , "Ptr", pMFType   ; IMFMediaType*
    , "Ptr", pMP2VI   ; MPEG2VIDEOINFO*
    , "UInt", cbBufSize   ; DWORD
    , "Ptr", pSubtype   ; GUID* optional
    , "Int")   ; return: HRESULT

●MFInitMediaTypeFromMPEG2VideoInfo(pMFType, pMP2VI, cbBufSize, pSubtype) = DLL("MFPlat.dll", "int MFInitMediaTypeFromMPEG2VideoInfo(void*, void*, dword, void*)")
# 呼び出し: MFInitMediaTypeFromMPEG2VideoInfo(pMFType, pMP2VI, cbBufSize, pSubtype)
# pMFType : IMFMediaType* -> "void*"
# pMP2VI : MPEG2VIDEOINFO* -> "void*"
# cbBufSize : DWORD -> "dword"
# pSubtype : GUID* optional -> "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)。