MFFrameRateToAverageTimePerFrame

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

HRESULT MFFrameRateToAverageTimePerFrame(
    DWORD unNumerator,
    DWORD unDenominator,
    ULONGLONG* punAverageTimePerFrame
);

<DllImport("MFPlat.dll", ExactSpelling:=True)>
Public Shared Function MFFrameRateToAverageTimePerFrame(
    unNumerator As UInteger,   ' DWORD
    unDenominator As UInteger,   ' DWORD
    <Out> ByRef punAverageTimePerFrame As ULong   ' ULONGLONG* out
) As Integer
End Function

' unNumerator : DWORD
' unDenominator : DWORD
' punAverageTimePerFrame : ULONGLONG* out
Declare PtrSafe Function MFFrameRateToAverageTimePerFrame Lib "mfplat" ( _
    ByVal unNumerator As Long, _
    ByVal unDenominator As Long, _
    ByRef punAverageTimePerFrame As LongLong) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

MFFrameRateToAverageTimePerFrame = ctypes.windll.mfplat.MFFrameRateToAverageTimePerFrame
MFFrameRateToAverageTimePerFrame.restype = ctypes.c_int
MFFrameRateToAverageTimePerFrame.argtypes = [
    wintypes.DWORD,  # unNumerator : DWORD
    wintypes.DWORD,  # unDenominator : DWORD
    ctypes.POINTER(ctypes.c_ulonglong),  # punAverageTimePerFrame : ULONGLONG* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('MFPlat.dll')
MFFrameRateToAverageTimePerFrame = Fiddle::Function.new(
  lib['MFFrameRateToAverageTimePerFrame'],
  [
    -Fiddle::TYPE_INT,  # unNumerator : DWORD
    -Fiddle::TYPE_INT,  # unDenominator : DWORD
    Fiddle::TYPE_VOIDP,  # punAverageTimePerFrame : ULONGLONG* out
  ],
  Fiddle::TYPE_INT)

#[link(name = "mfplat")]
extern "system" {
    fn MFFrameRateToAverageTimePerFrame(
        unNumerator: u32,  // DWORD
        unDenominator: u32,  // DWORD
        punAverageTimePerFrame: *mut u64  // ULONGLONG* out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("MFPlat.dll")]
public static extern int MFFrameRateToAverageTimePerFrame(uint unNumerator, uint unDenominator, out ulong punAverageTimePerFrame);
"@
$api = Add-Type -MemberDefinition $sig -Name 'MFPlat_MFFrameRateToAverageTimePerFrame' -Namespace Win32 -PassThru
# $api::MFFrameRateToAverageTimePerFrame(unNumerator, unDenominator, punAverageTimePerFrame)

#uselib "MFPlat.dll"
#func global MFFrameRateToAverageTimePerFrame "MFFrameRateToAverageTimePerFrame" sptr, sptr, sptr
; MFFrameRateToAverageTimePerFrame unNumerator, unDenominator, varptr(punAverageTimePerFrame)   ; 戻り値は stat
; unNumerator : DWORD -> "sptr"
; unDenominator : DWORD -> "sptr"
; punAverageTimePerFrame : ULONGLONG* 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 (
	mfplat = windows.NewLazySystemDLL("MFPlat.dll")
	procMFFrameRateToAverageTimePerFrame = mfplat.NewProc("MFFrameRateToAverageTimePerFrame")
)

// unNumerator (DWORD), unDenominator (DWORD), punAverageTimePerFrame (ULONGLONG* out)
r1, _, err := procMFFrameRateToAverageTimePerFrame.Call(
	uintptr(unNumerator),
	uintptr(unDenominator),
	uintptr(punAverageTimePerFrame),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function MFFrameRateToAverageTimePerFrame(
  unNumerator: DWORD;   // DWORD
  unDenominator: DWORD;   // DWORD
  punAverageTimePerFrame: Pointer   // ULONGLONG* out
): Integer; stdcall;
  external 'MFPlat.dll' name 'MFFrameRateToAverageTimePerFrame';

result := DllCall("MFPlat\MFFrameRateToAverageTimePerFrame"
    , "UInt", unNumerator   ; DWORD
    , "UInt", unDenominator   ; DWORD
    , "Ptr", punAverageTimePerFrame   ; ULONGLONG* out
    , "Int")   ; return: HRESULT

●MFFrameRateToAverageTimePerFrame(unNumerator, unDenominator, punAverageTimePerFrame) = DLL("MFPlat.dll", "int MFFrameRateToAverageTimePerFrame(dword, dword, void*)")
# 呼び出し: MFFrameRateToAverageTimePerFrame(unNumerator, unDenominator, punAverageTimePerFrame)
# unNumerator : DWORD -> "dword"
# unDenominator : DWORD -> "dword"
# punAverageTimePerFrame : ULONGLONG* 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 "mfplat" fn MFFrameRateToAverageTimePerFrame(
    unNumerator: u32, // DWORD
    unDenominator: u32, // DWORD
    punAverageTimePerFrame: [*c]u64 // ULONGLONG* out
) callconv(std.os.windows.WINAPI) i32;

proc MFFrameRateToAverageTimePerFrame(
    unNumerator: uint32,  # DWORD
    unDenominator: uint32,  # DWORD
    punAverageTimePerFrame: ptr uint64  # ULONGLONG* out
): int32 {.importc: "MFFrameRateToAverageTimePerFrame", stdcall, dynlib: "MFPlat.dll".}

pragma(lib, "mfplat");
extern(Windows)
int MFFrameRateToAverageTimePerFrame(
    uint unNumerator,   // DWORD
    uint unDenominator,   // DWORD
    ulong* punAverageTimePerFrame   // ULONGLONG* out
);

ccall((:MFFrameRateToAverageTimePerFrame, "MFPlat.dll"), stdcall, Int32,
      (UInt32, UInt32, Ptr{UInt64}),
      unNumerator, unDenominator, punAverageTimePerFrame)
# unNumerator : DWORD -> UInt32
# unDenominator : DWORD -> UInt32
# punAverageTimePerFrame : ULONGLONG* out -> Ptr{UInt64}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
int32_t MFFrameRateToAverageTimePerFrame(
    uint32_t unNumerator,
    uint32_t unDenominator,
    uint64_t* punAverageTimePerFrame);
]]
local mfplat = ffi.load("mfplat")
-- mfplat.MFFrameRateToAverageTimePerFrame(unNumerator, unDenominator, punAverageTimePerFrame)
-- unNumerator : DWORD
-- unDenominator : DWORD
-- punAverageTimePerFrame : ULONGLONG* 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('MFPlat.dll');
const MFFrameRateToAverageTimePerFrame = lib.func('__stdcall', 'MFFrameRateToAverageTimePerFrame', 'int32_t', ['uint32_t', 'uint32_t', 'uint64_t *']);
// MFFrameRateToAverageTimePerFrame(unNumerator, unDenominator, punAverageTimePerFrame)
// unNumerator : DWORD -> 'uint32_t'
// unDenominator : DWORD -> 'uint32_t'
// punAverageTimePerFrame : ULONGLONG* out -> 'uint64_t *'
// 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("MFPlat.dll", {
  MFFrameRateToAverageTimePerFrame: { parameters: ["u32", "u32", "pointer"], result: "i32" },
});
// lib.symbols.MFFrameRateToAverageTimePerFrame(unNumerator, unDenominator, punAverageTimePerFrame)
// unNumerator : DWORD -> "u32"
// unDenominator : DWORD -> "u32"
// punAverageTimePerFrame : ULONGLONG* 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 MFFrameRateToAverageTimePerFrame(
    uint32_t unNumerator,
    uint32_t unDenominator,
    uint64_t* punAverageTimePerFrame);
C, "MFPlat.dll");
// $ffi->MFFrameRateToAverageTimePerFrame(unNumerator, unDenominator, punAverageTimePerFrame);
// unNumerator : DWORD
// unDenominator : DWORD
// punAverageTimePerFrame : ULONGLONG* 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 Mfplat extends StdCallLibrary {
    Mfplat INSTANCE = Native.load("mfplat", Mfplat.class);
    int MFFrameRateToAverageTimePerFrame(
        int unNumerator,   // DWORD
        int unDenominator,   // DWORD
        LongByReference punAverageTimePerFrame   // ULONGLONG* out
    );
}

@[Link("mfplat")]
lib LibMFPlat
  fun MFFrameRateToAverageTimePerFrame = MFFrameRateToAverageTimePerFrame(
    unNumerator : UInt32,   # DWORD
    unDenominator : UInt32,   # DWORD
    punAverageTimePerFrame : UInt64*   # ULONGLONG* 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 MFFrameRateToAverageTimePerFrameNative = Int32 Function(Uint32, Uint32, Pointer<Uint64>);
typedef MFFrameRateToAverageTimePerFrameDart = int Function(int, int, Pointer<Uint64>);
final MFFrameRateToAverageTimePerFrame = DynamicLibrary.open('MFPlat.dll')
    .lookupFunction<MFFrameRateToAverageTimePerFrameNative, MFFrameRateToAverageTimePerFrameDart>('MFFrameRateToAverageTimePerFrame');
// unNumerator : DWORD -> Uint32
// unDenominator : DWORD -> Uint32
// punAverageTimePerFrame : ULONGLONG* out -> Pointer<Uint64>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function MFFrameRateToAverageTimePerFrame(
  unNumerator: DWORD;   // DWORD
  unDenominator: DWORD;   // DWORD
  punAverageTimePerFrame: Pointer   // ULONGLONG* out
): Integer; stdcall;
  external 'MFPlat.dll' name 'MFFrameRateToAverageTimePerFrame';

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

foreign import stdcall safe "MFFrameRateToAverageTimePerFrame"
  c_MFFrameRateToAverageTimePerFrame :: Word32 -> Word32 -> Ptr Word64 -> IO Int32
-- unNumerator : DWORD -> Word32
-- unDenominator : DWORD -> Word32
-- punAverageTimePerFrame : ULONGLONG* out -> Ptr Word64
-- 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 mfframeratetoaveragetimeperframe =
  foreign "MFFrameRateToAverageTimePerFrame"
    (uint32_t @-> uint32_t @-> (ptr uint64_t) @-> returning int32_t)
(* unNumerator : DWORD -> uint32_t *)
(* unDenominator : DWORD -> uint32_t *)
(* punAverageTimePerFrame : ULONGLONG* out -> (ptr uint64_t) *)
(* 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 mfplat (t "MFPlat.dll"))
(cffi:use-foreign-library mfplat)

(cffi:defcfun ("MFFrameRateToAverageTimePerFrame" mfframe-rate-to-average-time-per-frame :convention :stdcall) :int32
  (un-numerator :uint32)   ; DWORD
  (un-denominator :uint32)   ; DWORD
  (pun-average-time-per-frame :pointer))   ; ULONGLONG* out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $MFFrameRateToAverageTimePerFrame = Win32::API::More->new('MFPlat',
    'int MFFrameRateToAverageTimePerFrame(DWORD unNumerator, DWORD unDenominator, LPVOID punAverageTimePerFrame)');
# my $ret = $MFFrameRateToAverageTimePerFrame->Call($unNumerator, $unDenominator, $punAverageTimePerFrame);
# unNumerator : DWORD -> DWORD
# unDenominator : DWORD -> DWORD
# punAverageTimePerFrame : ULONGLONG* out -> LPVOID
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。