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MFCreateVideoRenderer

関数

拡張ビデオレンダラーのメディアシンクを作成する。

DLLMF.dll呼出規約winapi

シグネチャ

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

HRESULT MFCreateVideoRenderer(
    const GUID* riidRenderer,
    void** ppVideoRenderer
);

パラメーター

名前	型	方向	説明
riidRenderer	GUID*	in	要求するビデオレンダラインターフェイスのIIDへのポインタ。
ppVideoRenderer	void**	out	生成されたビデオレンダラを受け取るポインタのアドレス。

戻り値の型: HRESULT

各言語での呼び出し定義

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

HRESULT MFCreateVideoRenderer(
    const GUID* riidRenderer,
    void** ppVideoRenderer
);

[DllImport("MF.dll", ExactSpelling = true)]
static extern int MFCreateVideoRenderer(
    ref Guid riidRenderer,   // GUID*
    IntPtr ppVideoRenderer   // void** out
);

<DllImport("MF.dll", ExactSpelling:=True)>
Public Shared Function MFCreateVideoRenderer(
    ByRef riidRenderer As Guid,   ' GUID*
    ppVideoRenderer As IntPtr   ' void** out
) As Integer
End Function

' riidRenderer : GUID*
' ppVideoRenderer : void** out
Declare PtrSafe Function MFCreateVideoRenderer Lib "mf" ( _
    ByVal riidRenderer As LongPtr, _
    ByVal ppVideoRenderer 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

MFCreateVideoRenderer = ctypes.windll.mf.MFCreateVideoRenderer
MFCreateVideoRenderer.restype = ctypes.c_int
MFCreateVideoRenderer.argtypes = [
    ctypes.c_void_p,  # riidRenderer : GUID*
    ctypes.c_void_p,  # ppVideoRenderer : void** out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('MF.dll')
MFCreateVideoRenderer = Fiddle::Function.new(
  lib['MFCreateVideoRenderer'],
  [
    Fiddle::TYPE_VOIDP,  # riidRenderer : GUID*
    Fiddle::TYPE_VOIDP,  # ppVideoRenderer : void** out
  ],
  Fiddle::TYPE_INT)

#[link(name = "mf")]
extern "system" {
    fn MFCreateVideoRenderer(
        riidRenderer: *const GUID,  // GUID*
        ppVideoRenderer: *mut *mut ()  // void** out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("MF.dll")]
public static extern int MFCreateVideoRenderer(ref Guid riidRenderer, IntPtr ppVideoRenderer);
"@
$api = Add-Type -MemberDefinition $sig -Name 'MF_MFCreateVideoRenderer' -Namespace Win32 -PassThru
# $api::MFCreateVideoRenderer(riidRenderer, ppVideoRenderer)

#uselib "MF.dll"
#func global MFCreateVideoRenderer "MFCreateVideoRenderer" sptr, sptr
; MFCreateVideoRenderer varptr(riidRenderer), ppVideoRenderer   ; 戻り値は stat
; riidRenderer : GUID* -> "sptr"
; ppVideoRenderer : void** 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 "MF.dll"
#cfunc global MFCreateVideoRenderer "MFCreateVideoRenderer" var, sptr
; res = MFCreateVideoRenderer(riidRenderer, ppVideoRenderer)
; riidRenderer : GUID* -> "var"
; ppVideoRenderer : void** 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 "MF.dll"
#cfunc global MFCreateVideoRenderer "MFCreateVideoRenderer" sptr, sptr
; res = MFCreateVideoRenderer(varptr(riidRenderer), ppVideoRenderer)
; riidRenderer : GUID* -> "sptr"
; ppVideoRenderer : void** 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 MFCreateVideoRenderer(GUID* riidRenderer, void** ppVideoRenderer)
#uselib "MF.dll"
#cfunc global MFCreateVideoRenderer "MFCreateVideoRenderer" var, intptr
; res = MFCreateVideoRenderer(riidRenderer, ppVideoRenderer)
; riidRenderer : GUID* -> "var"
; ppVideoRenderer : void** 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 MFCreateVideoRenderer(GUID* riidRenderer, void** ppVideoRenderer)
#uselib "MF.dll"
#cfunc global MFCreateVideoRenderer "MFCreateVideoRenderer" intptr, intptr
; res = MFCreateVideoRenderer(varptr(riidRenderer), ppVideoRenderer)
; riidRenderer : GUID* -> "intptr"
; ppVideoRenderer : void** 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 (
	mf = windows.NewLazySystemDLL("MF.dll")
	procMFCreateVideoRenderer = mf.NewProc("MFCreateVideoRenderer")
)

// riidRenderer (GUID*), ppVideoRenderer (void** out)
r1, _, err := procMFCreateVideoRenderer.Call(
	uintptr(riidRenderer),
	uintptr(ppVideoRenderer),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function MFCreateVideoRenderer(
  riidRenderer: PGUID;   // GUID*
  ppVideoRenderer: Pointer   // void** out
): Integer; stdcall;
  external 'MF.dll' name 'MFCreateVideoRenderer';

result := DllCall("MF\MFCreateVideoRenderer"
    , "Ptr", riidRenderer   ; GUID*
    , "Ptr", ppVideoRenderer   ; void** out
    , "Int")   ; return: HRESULT

●MFCreateVideoRenderer(riidRenderer, ppVideoRenderer) = DLL("MF.dll", "int MFCreateVideoRenderer(void*, void*)")
# 呼び出し: MFCreateVideoRenderer(riidRenderer, ppVideoRenderer)
# riidRenderer : GUID* -> "void*"
# ppVideoRenderer : void** 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)。