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。

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)。

const std = @import("std");

extern "dxva2" fn DXVA2CreateVideoService(
    pDD: ?*anyopaque, // IDirect3DDevice9*
    riid: [*c]GUID, // GUID*
    ppService: ?*anyopaque // void** out
) callconv(std.os.windows.WINAPI) i32;

proc DXVA2CreateVideoService(
    pDD: pointer,  # IDirect3DDevice9*
    riid: ptr GUID,  # GUID*
    ppService: pointer  # void** out
): int32 {.importc: "DXVA2CreateVideoService", stdcall, dynlib: "dxva2.dll".}

pragma(lib, "dxva2");
extern(Windows)
int DXVA2CreateVideoService(
    void* pDD,   // IDirect3DDevice9*
    GUID* riid,   // GUID*
    void** ppService   // void** out
);

ccall((:DXVA2CreateVideoService, "dxva2.dll"), stdcall, Int32,
      (Ptr{Cvoid}, Ptr{GUID}, Ptr{Cvoid}),
      pDD, riid, ppService)
# pDD : IDirect3DDevice9* -> Ptr{Cvoid}
# riid : GUID* -> Ptr{GUID}
# ppService : void** out -> Ptr{Cvoid}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
int32_t DXVA2CreateVideoService(
    void* pDD,
    void* riid,
    void** ppService);
]]
local dxva2 = ffi.load("dxva2")
-- dxva2.DXVA2CreateVideoService(pDD, riid, ppService)
-- pDD : IDirect3DDevice9*
-- riid : GUID*
-- ppService : void** out
-- 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。

const koffi = require('koffi');
const lib = koffi.load('dxva2.dll');
const DXVA2CreateVideoService = lib.func('__stdcall', 'DXVA2CreateVideoService', 'int32_t', ['void *', 'void *', 'void *']);
// DXVA2CreateVideoService(pDD, riid, ppService)
// pDD : IDirect3DDevice9* -> 'void *'
// riid : GUID* -> 'void *'
// ppService : void** out -> 'void *'
// 出力ポインタは koffi.out(...) で包む。構造体は koffi.struct で定義。

const lib = Deno.dlopen("dxva2.dll", {
  DXVA2CreateVideoService: { parameters: ["pointer", "pointer", "pointer"], result: "i32" },
});
// lib.symbols.DXVA2CreateVideoService(pDD, riid, ppService)
// pDD : IDirect3DDevice9* -> "pointer"
// riid : GUID* -> "pointer"
// ppService : void** out -> "pointer"
// 文字列引数は "buffer"(NUL 終端のバイト列を Uint8Array で渡す)。
// 値渡し構造体は { struct: [ ...field types... ] } を使用。

<?php
$ffi = FFI::cdef(<<<C
int32_t DXVA2CreateVideoService(
    void* pDD,
    void* riid,
    void** ppService);
C, "dxva2.dll");
// $ffi->DXVA2CreateVideoService(pDD, riid, ppService);
// pDD : IDirect3DDevice9*
// riid : GUID*
// ppService : void** out
// 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。
// WINAPI(stdcall): x64 では呼出規約が統一されるため問題なし。x86 では __stdcall 対応のラッパが必要な場合あり。

import com.sun.jna.*;
import com.sun.jna.ptr.*;
import com.sun.jna.win32.StdCallLibrary;
import com.sun.jna.win32.W32APIOptions;

public interface Dxva2 extends StdCallLibrary {
    Dxva2 INSTANCE = Native.load("dxva2", Dxva2.class);
    int DXVA2CreateVideoService(
        Pointer pDD,   // IDirect3DDevice9*
        Pointer riid,   // GUID*
        Pointer ppService   // void** out
    );
}

@[Link("dxva2")]
lib Libdxva2
  fun DXVA2CreateVideoService = DXVA2CreateVideoService(
    pDD : Void*,   # IDirect3DDevice9*
    riid : GUID*,   # GUID*
    ppService : Void**   # void** out
  ) : Int32
end
# 構造体/GUID/enum は lib 内に対応する型定義が必要。
# 呼出規約: x64 は規約統一のため OK。x86(32bit)は WINAPI=stdcall だが Crystal の fun に stdcall 付与構文がなく非対応。

import 'dart:ffi';
import 'package:ffi/ffi.dart';

typedef DXVA2CreateVideoServiceNative = Int32 Function(Pointer<Void>, Pointer<Void>, Pointer<Void>);
typedef DXVA2CreateVideoServiceDart = int Function(Pointer<Void>, Pointer<Void>, Pointer<Void>);
final DXVA2CreateVideoService = DynamicLibrary.open('dxva2.dll')
    .lookupFunction<DXVA2CreateVideoServiceNative, DXVA2CreateVideoServiceDart>('DXVA2CreateVideoService');
// pDD : IDirect3DDevice9* -> Pointer<Void>
// riid : GUID* -> Pointer<Void>
// ppService : void** out -> Pointer<Void>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function DXVA2CreateVideoService(
  pDD: Pointer;   // IDirect3DDevice9*
  riid: PGUID;   // GUID*
  ppService: Pointer   // void** out
): Integer; stdcall;
  external 'dxva2.dll' name 'DXVA2CreateVideoService';

import Foreign
import Foreign.C.Types
import Foreign.C.String

foreign import stdcall safe "DXVA2CreateVideoService"
  c_DXVA2CreateVideoService :: Ptr () -> Ptr () -> Ptr () -> IO Int32
-- pDD : IDirect3DDevice9* -> Ptr ()
-- riid : GUID* -> Ptr ()
-- ppService : void** out -> Ptr ()
-- 要 GHC(Windows)。stdcall は x64 では ccall として扱われる。ブロックする API は safe 呼び出し推奨。

open Ctypes
open Foreign

let dxva2createvideoservice =
  foreign "DXVA2CreateVideoService"
    ((ptr void) @-> (ptr void) @-> (ptr void) @-> returning int32_t)
(* pDD : IDirect3DDevice9* -> (ptr void) *)
(* riid : GUID* -> (ptr void) *)
(* ppService : void** out -> (ptr void) *)
(* foreign は cdecl 前提。x64 Windows では WINAPI と一致。構造体は ctypes structure を定義のこと。 *)

(cffi:define-foreign-library dxva2 (t "dxva2.dll"))
(cffi:use-foreign-library dxva2)

(cffi:defcfun ("DXVA2CreateVideoService" dxva2-create-video-service :convention :stdcall) :int32
  (p-dd :pointer)   ; IDirect3DDevice9*
  (riid :pointer)   ; GUID*
  (pp-service :pointer))   ; void** out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $DXVA2CreateVideoService = Win32::API::More->new('dxva2',
    'int DXVA2CreateVideoService(LPVOID pDD, LPVOID riid, LPVOID ppService)');
# my $ret = $DXVA2CreateVideoService->Call($pDD, $riid, $ppService);
# pDD : IDirect3DDevice9* -> LPVOID
# riid : GUID* -> LPVOID
# ppService : void** out -> LPVOID
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。