DXVA2CreateVideoService

// dxva2.dll
#include <windows.h>

HRESULT DXVA2CreateVideoService(
    IDirect3DDevice9* pDD,
    const GUID* riid,
    void** ppService
);

<DllImport("dxva2.dll", ExactSpelling:=True)>
Public Shared Function DXVA2CreateVideoService(
    pDD As IntPtr,   ' IDirect3DDevice9*
    ByRef riid As Guid,   ' GUID*
    ppService As IntPtr   ' void** out
) As Integer
End Function

' pDD : IDirect3DDevice9*
' riid : GUID*
' ppService : void** out
Declare PtrSafe Function DXVA2CreateVideoService Lib "dxva2" ( _
    ByVal pDD As LongPtr, _
    ByVal riid As LongPtr, _
    ByVal ppService 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

DXVA2CreateVideoService = ctypes.windll.dxva2.DXVA2CreateVideoService
DXVA2CreateVideoService.restype = ctypes.c_int
DXVA2CreateVideoService.argtypes = [
    ctypes.c_void_p,  # pDD : IDirect3DDevice9*
    ctypes.c_void_p,  # riid : GUID*
    ctypes.c_void_p,  # ppService : void** out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('dxva2.dll')
DXVA2CreateVideoService = Fiddle::Function.new(
  lib['DXVA2CreateVideoService'],
  [
    Fiddle::TYPE_VOIDP,  # pDD : IDirect3DDevice9*
    Fiddle::TYPE_VOIDP,  # riid : GUID*
    Fiddle::TYPE_VOIDP,  # ppService : void** out
  ],
  Fiddle::TYPE_INT)

#[link(name = "dxva2")]
extern "system" {
    fn DXVA2CreateVideoService(
        pDD: *mut core::ffi::c_void,  // IDirect3DDevice9*
        riid: *const GUID,  // GUID*
        ppService: *mut *mut ()  // void** out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("dxva2.dll")]
public static extern int DXVA2CreateVideoService(IntPtr pDD, ref Guid riid, IntPtr ppService);
"@
$api = Add-Type -MemberDefinition $sig -Name 'dxva2_DXVA2CreateVideoService' -Namespace Win32 -PassThru
# $api::DXVA2CreateVideoService(pDD, riid, ppService)

#uselib "dxva2.dll"
#func global DXVA2CreateVideoService "DXVA2CreateVideoService" sptr, sptr, sptr
; DXVA2CreateVideoService pDD, varptr(riid), ppService   ; 戻り値は stat
; pDD : IDirect3DDevice9* -> "sptr"
; riid : GUID* -> "sptr"
; ppService : 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。

#uselib "dxva2.dll"
#cfunc global DXVA2CreateVideoService "DXVA2CreateVideoService" sptr, var, sptr
; res = DXVA2CreateVideoService(pDD, riid, ppService)
; pDD : IDirect3DDevice9* -> "sptr"
; riid : GUID* -> "var"
; ppService : 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。

; HRESULT DXVA2CreateVideoService(IDirect3DDevice9* pDD, GUID* riid, void** ppService)
#uselib "dxva2.dll"
#cfunc global DXVA2CreateVideoService "DXVA2CreateVideoService" intptr, var, intptr
; res = DXVA2CreateVideoService(pDD, riid, ppService)
; pDD : IDirect3DDevice9* -> "intptr"
; riid : GUID* -> "var"
; ppService : 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。

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

var (
	dxva2 = windows.NewLazySystemDLL("dxva2.dll")
	procDXVA2CreateVideoService = dxva2.NewProc("DXVA2CreateVideoService")
)

// pDD (IDirect3DDevice9*), riid (GUID*), ppService (void** out)
r1, _, err := procDXVA2CreateVideoService.Call(
	uintptr(pDD),
	uintptr(riid),
	uintptr(ppService),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function DXVA2CreateVideoService(
  pDD: Pointer;   // IDirect3DDevice9*
  riid: PGUID;   // GUID*
  ppService: Pointer   // void** out
): Integer; stdcall;
  external 'dxva2.dll' name 'DXVA2CreateVideoService';

result := DllCall("dxva2\DXVA2CreateVideoService"
    , "Ptr", pDD   ; IDirect3DDevice9*
    , "Ptr", riid   ; GUID*
    , "Ptr", ppService   ; void** out
    , "Int")   ; return: HRESULT

●DXVA2CreateVideoService(pDD, riid, ppService) = DLL("dxva2.dll", "int DXVA2CreateVideoService(void*, void*, void*)")
# 呼び出し: DXVA2CreateVideoService(pDD, riid, ppService)
# pDD : IDirect3DDevice9* -> "void*"
# riid : GUID* -> "void*"
# ppService : 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)。