KsGetMediaTypeCount

// ksproxy.ax
#include <windows.h>

HRESULT KsGetMediaTypeCount(
    HANDLE FilterHandle,
    DWORD PinFactoryId,
    DWORD* MediaTypeCount
);

<DllImport("ksproxy.ax", ExactSpelling:=True)>
Public Shared Function KsGetMediaTypeCount(
    FilterHandle As IntPtr,   ' HANDLE
    PinFactoryId As UInteger,   ' DWORD
    <Out> ByRef MediaTypeCount As UInteger   ' DWORD* out
) As Integer
End Function

' FilterHandle : HANDLE
' PinFactoryId : DWORD
' MediaTypeCount : DWORD* out
Declare PtrSafe Function KsGetMediaTypeCount Lib "ksproxy.ax" ( _
    ByVal FilterHandle As LongPtr, _
    ByVal PinFactoryId As Long, _
    ByRef MediaTypeCount As Long) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

KsGetMediaTypeCount = ctypes.windll.LoadLibrary("ksproxy.ax").KsGetMediaTypeCount
KsGetMediaTypeCount.restype = ctypes.c_int
KsGetMediaTypeCount.argtypes = [
    wintypes.HANDLE,  # FilterHandle : HANDLE
    wintypes.DWORD,  # PinFactoryId : DWORD
    ctypes.POINTER(wintypes.DWORD),  # MediaTypeCount : DWORD* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('ksproxy.ax')
KsGetMediaTypeCount = Fiddle::Function.new(
  lib['KsGetMediaTypeCount'],
  [
    Fiddle::TYPE_VOIDP,  # FilterHandle : HANDLE
    -Fiddle::TYPE_INT,  # PinFactoryId : DWORD
    Fiddle::TYPE_VOIDP,  # MediaTypeCount : DWORD* out
  ],
  Fiddle::TYPE_INT)

#[link(name = "ksproxy.ax")]
extern "system" {
    fn KsGetMediaTypeCount(
        FilterHandle: *mut core::ffi::c_void,  // HANDLE
        PinFactoryId: u32,  // DWORD
        MediaTypeCount: *mut u32  // DWORD* out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("ksproxy.ax")]
public static extern int KsGetMediaTypeCount(IntPtr FilterHandle, uint PinFactoryId, out uint MediaTypeCount);
"@
$api = Add-Type -MemberDefinition $sig -Name 'ksproxy.ax_KsGetMediaTypeCount' -Namespace Win32 -PassThru
# $api::KsGetMediaTypeCount(FilterHandle, PinFactoryId, MediaTypeCount)

#uselib "ksproxy.ax"
#func global KsGetMediaTypeCount "KsGetMediaTypeCount" sptr, sptr, sptr
; KsGetMediaTypeCount FilterHandle, PinFactoryId, varptr(MediaTypeCount)   ; 戻り値は stat
; FilterHandle : HANDLE -> "sptr"
; PinFactoryId : DWORD -> "sptr"
; MediaTypeCount : DWORD* 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 (
	ksproxy_ax = windows.NewLazySystemDLL("ksproxy.ax")
	procKsGetMediaTypeCount = ksproxy_ax.NewProc("KsGetMediaTypeCount")
)

// FilterHandle (HANDLE), PinFactoryId (DWORD), MediaTypeCount (DWORD* out)
r1, _, err := procKsGetMediaTypeCount.Call(
	uintptr(FilterHandle),
	uintptr(PinFactoryId),
	uintptr(MediaTypeCount),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function KsGetMediaTypeCount(
  FilterHandle: THandle;   // HANDLE
  PinFactoryId: DWORD;   // DWORD
  MediaTypeCount: Pointer   // DWORD* out
): Integer; stdcall;
  external 'ksproxy.ax' name 'KsGetMediaTypeCount';

result := DllCall("ksproxy.ax\KsGetMediaTypeCount"
    , "Ptr", FilterHandle   ; HANDLE
    , "UInt", PinFactoryId   ; DWORD
    , "Ptr", MediaTypeCount   ; DWORD* out
    , "Int")   ; return: HRESULT

●KsGetMediaTypeCount(FilterHandle, PinFactoryId, MediaTypeCount) = DLL("ksproxy.ax", "int KsGetMediaTypeCount(void*, dword, void*)")
# 呼び出し: KsGetMediaTypeCount(FilterHandle, PinFactoryId, MediaTypeCount)
# FilterHandle : HANDLE -> "void*"
# PinFactoryId : DWORD -> "dword"
# MediaTypeCount : DWORD* 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 "ksproxy.ax" fn KsGetMediaTypeCount(
    FilterHandle: ?*anyopaque, // HANDLE
    PinFactoryId: u32, // DWORD
    MediaTypeCount: [*c]u32 // DWORD* out
) callconv(std.os.windows.WINAPI) i32;

proc KsGetMediaTypeCount(
    FilterHandle: pointer,  # HANDLE
    PinFactoryId: uint32,  # DWORD
    MediaTypeCount: ptr uint32  # DWORD* out
): int32 {.importc: "KsGetMediaTypeCount", stdcall, dynlib: "ksproxy.ax".}

pragma(lib, "ksproxy.ax");
extern(Windows)
int KsGetMediaTypeCount(
    void* FilterHandle,   // HANDLE
    uint PinFactoryId,   // DWORD
    uint* MediaTypeCount   // DWORD* out
);

ccall((:KsGetMediaTypeCount, "ksproxy.ax"), stdcall, Int32,
      (Ptr{Cvoid}, UInt32, Ptr{UInt32}),
      FilterHandle, PinFactoryId, MediaTypeCount)
# FilterHandle : HANDLE -> Ptr{Cvoid}
# PinFactoryId : DWORD -> UInt32
# MediaTypeCount : DWORD* out -> Ptr{UInt32}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
int32_t KsGetMediaTypeCount(
    void* FilterHandle,
    uint32_t PinFactoryId,
    uint32_t* MediaTypeCount);
]]
local ksproxy.ax = ffi.load("ksproxy.ax")
-- ksproxy.ax.KsGetMediaTypeCount(FilterHandle, PinFactoryId, MediaTypeCount)
-- FilterHandle : HANDLE
-- PinFactoryId : DWORD
-- MediaTypeCount : DWORD* 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('ksproxy.ax');
const KsGetMediaTypeCount = lib.func('__stdcall', 'KsGetMediaTypeCount', 'int32_t', ['void *', 'uint32_t', 'uint32_t *']);
// KsGetMediaTypeCount(FilterHandle, PinFactoryId, MediaTypeCount)
// FilterHandle : HANDLE -> 'void *'
// PinFactoryId : DWORD -> 'uint32_t'
// MediaTypeCount : DWORD* out -> 'uint32_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("ksproxy.ax", {
  KsGetMediaTypeCount: { parameters: ["pointer", "u32", "pointer"], result: "i32" },
});
// lib.symbols.KsGetMediaTypeCount(FilterHandle, PinFactoryId, MediaTypeCount)
// FilterHandle : HANDLE -> "pointer"
// PinFactoryId : DWORD -> "u32"
// MediaTypeCount : DWORD* 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 KsGetMediaTypeCount(
    void* FilterHandle,
    uint32_t PinFactoryId,
    uint32_t* MediaTypeCount);
C, "ksproxy.ax");
// $ffi->KsGetMediaTypeCount(FilterHandle, PinFactoryId, MediaTypeCount);
// FilterHandle : HANDLE
// PinFactoryId : DWORD
// MediaTypeCount : DWORD* 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 Ksproxy.ax extends StdCallLibrary {
    Ksproxy.ax INSTANCE = Native.load("ksproxy.ax", Ksproxy.ax.class);
    int KsGetMediaTypeCount(
        Pointer FilterHandle,   // HANDLE
        int PinFactoryId,   // DWORD
        IntByReference MediaTypeCount   // DWORD* out
    );
}

@[Link("ksproxy.ax")]
lib Libksproxy.ax
  fun KsGetMediaTypeCount = KsGetMediaTypeCount(
    FilterHandle : Void*,   # HANDLE
    PinFactoryId : UInt32,   # DWORD
    MediaTypeCount : UInt32*   # DWORD* 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 KsGetMediaTypeCountNative = Int32 Function(Pointer<Void>, Uint32, Pointer<Uint32>);
typedef KsGetMediaTypeCountDart = int Function(Pointer<Void>, int, Pointer<Uint32>);
final KsGetMediaTypeCount = DynamicLibrary.open('ksproxy.ax')
    .lookupFunction<KsGetMediaTypeCountNative, KsGetMediaTypeCountDart>('KsGetMediaTypeCount');
// FilterHandle : HANDLE -> Pointer<Void>
// PinFactoryId : DWORD -> Uint32
// MediaTypeCount : DWORD* out -> Pointer<Uint32>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function KsGetMediaTypeCount(
  FilterHandle: THandle;   // HANDLE
  PinFactoryId: DWORD;   // DWORD
  MediaTypeCount: Pointer   // DWORD* out
): Integer; stdcall;
  external 'ksproxy.ax' name 'KsGetMediaTypeCount';

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

foreign import stdcall safe "KsGetMediaTypeCount"
  c_KsGetMediaTypeCount :: Ptr () -> Word32 -> Ptr Word32 -> IO Int32
-- FilterHandle : HANDLE -> Ptr ()
-- PinFactoryId : DWORD -> Word32
-- MediaTypeCount : DWORD* out -> Ptr Word32
-- 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 ksgetmediatypecount =
  foreign "KsGetMediaTypeCount"
    ((ptr void) @-> uint32_t @-> (ptr uint32_t) @-> returning int32_t)
(* FilterHandle : HANDLE -> (ptr void) *)
(* PinFactoryId : DWORD -> uint32_t *)
(* MediaTypeCount : DWORD* out -> (ptr uint32_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 ksproxy.ax (t "ksproxy.ax"))
(cffi:use-foreign-library ksproxy.ax)

(cffi:defcfun ("KsGetMediaTypeCount" ks-get-media-type-count :convention :stdcall) :int32
  (filter-handle :pointer)   ; HANDLE
  (pin-factory-id :uint32)   ; DWORD
  (media-type-count :pointer))   ; DWORD* out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $KsGetMediaTypeCount = Win32::API::More->new('ksproxy.ax',
    'int KsGetMediaTypeCount(HANDLE FilterHandle, DWORD PinFactoryId, LPVOID MediaTypeCount)');
# my $ret = $KsGetMediaTypeCount->Call($FilterHandle, $PinFactoryId, $MediaTypeCount);
# FilterHandle : HANDLE -> HANDLE
# PinFactoryId : DWORD -> DWORD
# MediaTypeCount : DWORD* out -> LPVOID
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。