ホーム › Media.MediaFoundation › MFLockDXGIDeviceManager

MFLockDXGIDeviceManager

関数

DXGIデバイスマネージャーをロックして取得する。

DLLMFPlat.dll呼出規約winapi対応OSwindows8.0

シグネチャ

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

HRESULT MFLockDXGIDeviceManager(
    DWORD* pResetToken,   // optional
    IMFDXGIDeviceManager** ppManager
);

パラメーター

名前	型	方向	説明
pResetToken	DWORD*	outoptional	デバイスマネージャのリセットトークンを受け取る出力ポインタ。NULL 可。
ppManager	IMFDXGIDeviceManager**	out	ロックした共有 IMFDXGIDeviceManager を受け取る出力ポインタ。

戻り値の型: HRESULT

各言語での呼び出し定義

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

HRESULT MFLockDXGIDeviceManager(
    DWORD* pResetToken,   // optional
    IMFDXGIDeviceManager** ppManager
);

[DllImport("MFPlat.dll", ExactSpelling = true)]
static extern int MFLockDXGIDeviceManager(
    IntPtr pResetToken,   // DWORD* optional, out
    IntPtr ppManager   // IMFDXGIDeviceManager** out
);

<DllImport("MFPlat.dll", ExactSpelling:=True)>
Public Shared Function MFLockDXGIDeviceManager(
    pResetToken As IntPtr,   ' DWORD* optional, out
    ppManager As IntPtr   ' IMFDXGIDeviceManager** out
) As Integer
End Function

' pResetToken : DWORD* optional, out
' ppManager : IMFDXGIDeviceManager** out
Declare PtrSafe Function MFLockDXGIDeviceManager Lib "mfplat" ( _
    ByVal pResetToken As LongPtr, _
    ByVal ppManager 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

MFLockDXGIDeviceManager = ctypes.windll.mfplat.MFLockDXGIDeviceManager
MFLockDXGIDeviceManager.restype = ctypes.c_int
MFLockDXGIDeviceManager.argtypes = [
    ctypes.POINTER(wintypes.DWORD),  # pResetToken : DWORD* optional, out
    ctypes.c_void_p,  # ppManager : IMFDXGIDeviceManager** out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('MFPlat.dll')
MFLockDXGIDeviceManager = Fiddle::Function.new(
  lib['MFLockDXGIDeviceManager'],
  [
    Fiddle::TYPE_VOIDP,  # pResetToken : DWORD* optional, out
    Fiddle::TYPE_VOIDP,  # ppManager : IMFDXGIDeviceManager** out
  ],
  Fiddle::TYPE_INT)

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

$sig = @"
[DllImport("MFPlat.dll")]
public static extern int MFLockDXGIDeviceManager(IntPtr pResetToken, IntPtr ppManager);
"@
$api = Add-Type -MemberDefinition $sig -Name 'MFPlat_MFLockDXGIDeviceManager' -Namespace Win32 -PassThru
# $api::MFLockDXGIDeviceManager(pResetToken, ppManager)

#uselib "MFPlat.dll"
#func global MFLockDXGIDeviceManager "MFLockDXGIDeviceManager" sptr, sptr
; MFLockDXGIDeviceManager varptr(pResetToken), ppManager   ; 戻り値は stat
; pResetToken : DWORD* optional, out -> "sptr"
; ppManager : IMFDXGIDeviceManager** 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。

出力引数:

#uselib "MFPlat.dll"
#cfunc global MFLockDXGIDeviceManager "MFLockDXGIDeviceManager" var, sptr
; res = MFLockDXGIDeviceManager(pResetToken, ppManager)
; pResetToken : DWORD* optional, out -> "var"
; ppManager : IMFDXGIDeviceManager** out -> "sptr"
; ※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。#uselib "MFPlat.dll"
#cfunc global MFLockDXGIDeviceManager "MFLockDXGIDeviceManager" sptr, sptr
; res = MFLockDXGIDeviceManager(varptr(pResetToken), ppManager)
; pResetToken : DWORD* optional, out -> "sptr"
; ppManager : IMFDXGIDeviceManager** out -> "sptr"
; ※出力/バッファ引数はポインタ方式(token=sptr / 呼び出しは varptr(変数))。

出力引数:

; HRESULT MFLockDXGIDeviceManager(DWORD* pResetToken, IMFDXGIDeviceManager** ppManager)
#uselib "MFPlat.dll"
#cfunc global MFLockDXGIDeviceManager "MFLockDXGIDeviceManager" var, intptr
; res = MFLockDXGIDeviceManager(pResetToken, ppManager)
; pResetToken : DWORD* optional, out -> "var"
; ppManager : IMFDXGIDeviceManager** out -> "intptr"
; ※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 MFLockDXGIDeviceManager(DWORD* pResetToken, IMFDXGIDeviceManager** ppManager)
#uselib "MFPlat.dll"
#cfunc global MFLockDXGIDeviceManager "MFLockDXGIDeviceManager" intptr, intptr
; res = MFLockDXGIDeviceManager(varptr(pResetToken), ppManager)
; pResetToken : DWORD* optional, out -> "intptr"
; ppManager : IMFDXGIDeviceManager** out -> "intptr"
; ※出力/バッファ引数はポインタ方式(token=intptr / 呼び出しは varptr(変数))。

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

var (
	mfplat = windows.NewLazySystemDLL("MFPlat.dll")
	procMFLockDXGIDeviceManager = mfplat.NewProc("MFLockDXGIDeviceManager")
)

// pResetToken (DWORD* optional, out), ppManager (IMFDXGIDeviceManager** out)
r1, _, err := procMFLockDXGIDeviceManager.Call(
	uintptr(pResetToken),
	uintptr(ppManager),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function MFLockDXGIDeviceManager(
  pResetToken: Pointer;   // DWORD* optional, out
  ppManager: Pointer   // IMFDXGIDeviceManager** out
): Integer; stdcall;
  external 'MFPlat.dll' name 'MFLockDXGIDeviceManager';

result := DllCall("MFPlat\MFLockDXGIDeviceManager"
    , "Ptr", pResetToken   ; DWORD* optional, out
    , "Ptr", ppManager   ; IMFDXGIDeviceManager** out
    , "Int")   ; return: HRESULT

●MFLockDXGIDeviceManager(pResetToken, ppManager) = DLL("MFPlat.dll", "int MFLockDXGIDeviceManager(void*, void*)")
# 呼び出し: MFLockDXGIDeviceManager(pResetToken, ppManager)
# pResetToken : DWORD* optional, out -> "void*"
# ppManager : IMFDXGIDeviceManager** 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)。