MFCreateStreamDescriptor

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

HRESULT MFCreateStreamDescriptor(
    DWORD dwStreamIdentifier,
    DWORD cMediaTypes,
    IMFMediaType** apMediaTypes,
    IMFStreamDescriptor** ppDescriptor
);

<DllImport("MFPlat.dll", ExactSpelling:=True)>
Public Shared Function MFCreateStreamDescriptor(
    dwStreamIdentifier As UInteger,   ' DWORD
    cMediaTypes As UInteger,   ' DWORD
    apMediaTypes As IntPtr,   ' IMFMediaType**
    ppDescriptor As IntPtr   ' IMFStreamDescriptor** out
) As Integer
End Function

' dwStreamIdentifier : DWORD
' cMediaTypes : DWORD
' apMediaTypes : IMFMediaType**
' ppDescriptor : IMFStreamDescriptor** out
Declare PtrSafe Function MFCreateStreamDescriptor Lib "mfplat" ( _
    ByVal dwStreamIdentifier As Long, _
    ByVal cMediaTypes As Long, _
    ByVal apMediaTypes As LongPtr, _
    ByVal ppDescriptor 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

MFCreateStreamDescriptor = ctypes.windll.mfplat.MFCreateStreamDescriptor
MFCreateStreamDescriptor.restype = ctypes.c_int
MFCreateStreamDescriptor.argtypes = [
    wintypes.DWORD,  # dwStreamIdentifier : DWORD
    wintypes.DWORD,  # cMediaTypes : DWORD
    ctypes.c_void_p,  # apMediaTypes : IMFMediaType**
    ctypes.c_void_p,  # ppDescriptor : IMFStreamDescriptor** out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('MFPlat.dll')
MFCreateStreamDescriptor = Fiddle::Function.new(
  lib['MFCreateStreamDescriptor'],
  [
    -Fiddle::TYPE_INT,  # dwStreamIdentifier : DWORD
    -Fiddle::TYPE_INT,  # cMediaTypes : DWORD
    Fiddle::TYPE_VOIDP,  # apMediaTypes : IMFMediaType**
    Fiddle::TYPE_VOIDP,  # ppDescriptor : IMFStreamDescriptor** out
  ],
  Fiddle::TYPE_INT)

#[link(name = "mfplat")]
extern "system" {
    fn MFCreateStreamDescriptor(
        dwStreamIdentifier: u32,  // DWORD
        cMediaTypes: u32,  // DWORD
        apMediaTypes: *mut *mut core::ffi::c_void,  // IMFMediaType**
        ppDescriptor: *mut *mut core::ffi::c_void  // IMFStreamDescriptor** out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("MFPlat.dll")]
public static extern int MFCreateStreamDescriptor(uint dwStreamIdentifier, uint cMediaTypes, IntPtr apMediaTypes, IntPtr ppDescriptor);
"@
$api = Add-Type -MemberDefinition $sig -Name 'MFPlat_MFCreateStreamDescriptor' -Namespace Win32 -PassThru
# $api::MFCreateStreamDescriptor(dwStreamIdentifier, cMediaTypes, apMediaTypes, ppDescriptor)

#uselib "MFPlat.dll"
#func global MFCreateStreamDescriptor "MFCreateStreamDescriptor" sptr, sptr, sptr, sptr
; MFCreateStreamDescriptor dwStreamIdentifier, cMediaTypes, apMediaTypes, ppDescriptor   ; 戻り値は stat
; dwStreamIdentifier : DWORD -> "sptr"
; cMediaTypes : DWORD -> "sptr"
; apMediaTypes : IMFMediaType** -> "sptr"
; ppDescriptor : IMFStreamDescriptor** 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 "MFPlat.dll"
#cfunc global MFCreateStreamDescriptor "MFCreateStreamDescriptor" int, int, sptr, sptr
; res = MFCreateStreamDescriptor(dwStreamIdentifier, cMediaTypes, apMediaTypes, ppDescriptor)
; dwStreamIdentifier : DWORD -> "int"
; cMediaTypes : DWORD -> "int"
; apMediaTypes : IMFMediaType** -> "sptr"
; ppDescriptor : IMFStreamDescriptor** out -> "sptr"

; HRESULT MFCreateStreamDescriptor(DWORD dwStreamIdentifier, DWORD cMediaTypes, IMFMediaType** apMediaTypes, IMFStreamDescriptor** ppDescriptor)
#uselib "MFPlat.dll"
#cfunc global MFCreateStreamDescriptor "MFCreateStreamDescriptor" int, int, intptr, intptr
; res = MFCreateStreamDescriptor(dwStreamIdentifier, cMediaTypes, apMediaTypes, ppDescriptor)
; dwStreamIdentifier : DWORD -> "int"
; cMediaTypes : DWORD -> "int"
; apMediaTypes : IMFMediaType** -> "intptr"
; ppDescriptor : IMFStreamDescriptor** out -> "intptr"

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

var (
	mfplat = windows.NewLazySystemDLL("MFPlat.dll")
	procMFCreateStreamDescriptor = mfplat.NewProc("MFCreateStreamDescriptor")
)

// dwStreamIdentifier (DWORD), cMediaTypes (DWORD), apMediaTypes (IMFMediaType**), ppDescriptor (IMFStreamDescriptor** out)
r1, _, err := procMFCreateStreamDescriptor.Call(
	uintptr(dwStreamIdentifier),
	uintptr(cMediaTypes),
	uintptr(apMediaTypes),
	uintptr(ppDescriptor),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function MFCreateStreamDescriptor(
  dwStreamIdentifier: DWORD;   // DWORD
  cMediaTypes: DWORD;   // DWORD
  apMediaTypes: Pointer;   // IMFMediaType**
  ppDescriptor: Pointer   // IMFStreamDescriptor** out
): Integer; stdcall;
  external 'MFPlat.dll' name 'MFCreateStreamDescriptor';

result := DllCall("MFPlat\MFCreateStreamDescriptor"
    , "UInt", dwStreamIdentifier   ; DWORD
    , "UInt", cMediaTypes   ; DWORD
    , "Ptr", apMediaTypes   ; IMFMediaType**
    , "Ptr", ppDescriptor   ; IMFStreamDescriptor** out
    , "Int")   ; return: HRESULT

●MFCreateStreamDescriptor(dwStreamIdentifier, cMediaTypes, apMediaTypes, ppDescriptor) = DLL("MFPlat.dll", "int MFCreateStreamDescriptor(dword, dword, void*, void*)")
# 呼び出し: MFCreateStreamDescriptor(dwStreamIdentifier, cMediaTypes, apMediaTypes, ppDescriptor)
# dwStreamIdentifier : DWORD -> "dword"
# cMediaTypes : DWORD -> "dword"
# apMediaTypes : IMFMediaType** -> "void*"
# ppDescriptor : IMFStreamDescriptor** 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 MFCreateStreamDescriptor(
    dwStreamIdentifier: u32, // DWORD
    cMediaTypes: u32, // DWORD
    apMediaTypes: ?*anyopaque, // IMFMediaType**
    ppDescriptor: ?*anyopaque // IMFStreamDescriptor** out
) callconv(std.os.windows.WINAPI) i32;

proc MFCreateStreamDescriptor(
    dwStreamIdentifier: uint32,  # DWORD
    cMediaTypes: uint32,  # DWORD
    apMediaTypes: pointer,  # IMFMediaType**
    ppDescriptor: pointer  # IMFStreamDescriptor** out
): int32 {.importc: "MFCreateStreamDescriptor", stdcall, dynlib: "MFPlat.dll".}

pragma(lib, "mfplat");
extern(Windows)
int MFCreateStreamDescriptor(
    uint dwStreamIdentifier,   // DWORD
    uint cMediaTypes,   // DWORD
    void* apMediaTypes,   // IMFMediaType**
    void* ppDescriptor   // IMFStreamDescriptor** out
);

ccall((:MFCreateStreamDescriptor, "MFPlat.dll"), stdcall, Int32,
      (UInt32, UInt32, Ptr{Cvoid}, Ptr{Cvoid}),
      dwStreamIdentifier, cMediaTypes, apMediaTypes, ppDescriptor)
# dwStreamIdentifier : DWORD -> UInt32
# cMediaTypes : DWORD -> UInt32
# apMediaTypes : IMFMediaType** -> Ptr{Cvoid}
# ppDescriptor : IMFStreamDescriptor** 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 MFCreateStreamDescriptor(
    uint32_t dwStreamIdentifier,
    uint32_t cMediaTypes,
    void* apMediaTypes,
    void* ppDescriptor);
]]
local mfplat = ffi.load("mfplat")
-- mfplat.MFCreateStreamDescriptor(dwStreamIdentifier, cMediaTypes, apMediaTypes, ppDescriptor)
-- dwStreamIdentifier : DWORD
-- cMediaTypes : DWORD
-- apMediaTypes : IMFMediaType**
-- ppDescriptor : IMFStreamDescriptor** 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 MFCreateStreamDescriptor = lib.func('__stdcall', 'MFCreateStreamDescriptor', 'int32_t', ['uint32_t', 'uint32_t', 'void *', 'void *']);
// MFCreateStreamDescriptor(dwStreamIdentifier, cMediaTypes, apMediaTypes, ppDescriptor)
// dwStreamIdentifier : DWORD -> 'uint32_t'
// cMediaTypes : DWORD -> 'uint32_t'
// apMediaTypes : IMFMediaType** -> 'void *'
// ppDescriptor : IMFStreamDescriptor** 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("MFPlat.dll", {
  MFCreateStreamDescriptor: { parameters: ["u32", "u32", "pointer", "pointer"], result: "i32" },
});
// lib.symbols.MFCreateStreamDescriptor(dwStreamIdentifier, cMediaTypes, apMediaTypes, ppDescriptor)
// dwStreamIdentifier : DWORD -> "u32"
// cMediaTypes : DWORD -> "u32"
// apMediaTypes : IMFMediaType** -> "pointer"
// ppDescriptor : IMFStreamDescriptor** 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 MFCreateStreamDescriptor(
    uint32_t dwStreamIdentifier,
    uint32_t cMediaTypes,
    void* apMediaTypes,
    void* ppDescriptor);
C, "MFPlat.dll");
// $ffi->MFCreateStreamDescriptor(dwStreamIdentifier, cMediaTypes, apMediaTypes, ppDescriptor);
// dwStreamIdentifier : DWORD
// cMediaTypes : DWORD
// apMediaTypes : IMFMediaType**
// ppDescriptor : IMFStreamDescriptor** 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 MFCreateStreamDescriptor(
        int dwStreamIdentifier,   // DWORD
        int cMediaTypes,   // DWORD
        Pointer apMediaTypes,   // IMFMediaType**
        Pointer ppDescriptor   // IMFStreamDescriptor** out
    );
}

@[Link("mfplat")]
lib LibMFPlat
  fun MFCreateStreamDescriptor = MFCreateStreamDescriptor(
    dwStreamIdentifier : UInt32,   # DWORD
    cMediaTypes : UInt32,   # DWORD
    apMediaTypes : Void*,   # IMFMediaType**
    ppDescriptor : Void*   # IMFStreamDescriptor** 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 MFCreateStreamDescriptorNative = Int32 Function(Uint32, Uint32, Pointer<Void>, Pointer<Void>);
typedef MFCreateStreamDescriptorDart = int Function(int, int, Pointer<Void>, Pointer<Void>);
final MFCreateStreamDescriptor = DynamicLibrary.open('MFPlat.dll')
    .lookupFunction<MFCreateStreamDescriptorNative, MFCreateStreamDescriptorDart>('MFCreateStreamDescriptor');
// dwStreamIdentifier : DWORD -> Uint32
// cMediaTypes : DWORD -> Uint32
// apMediaTypes : IMFMediaType** -> Pointer<Void>
// ppDescriptor : IMFStreamDescriptor** out -> Pointer<Void>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function MFCreateStreamDescriptor(
  dwStreamIdentifier: DWORD;   // DWORD
  cMediaTypes: DWORD;   // DWORD
  apMediaTypes: Pointer;   // IMFMediaType**
  ppDescriptor: Pointer   // IMFStreamDescriptor** out
): Integer; stdcall;
  external 'MFPlat.dll' name 'MFCreateStreamDescriptor';

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

foreign import stdcall safe "MFCreateStreamDescriptor"
  c_MFCreateStreamDescriptor :: Word32 -> Word32 -> Ptr () -> Ptr () -> IO Int32
-- dwStreamIdentifier : DWORD -> Word32
-- cMediaTypes : DWORD -> Word32
-- apMediaTypes : IMFMediaType** -> Ptr ()
-- ppDescriptor : IMFStreamDescriptor** 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 mfcreatestreamdescriptor =
  foreign "MFCreateStreamDescriptor"
    (uint32_t @-> uint32_t @-> (ptr void) @-> (ptr void) @-> returning int32_t)
(* dwStreamIdentifier : DWORD -> uint32_t *)
(* cMediaTypes : DWORD -> uint32_t *)
(* apMediaTypes : IMFMediaType** -> (ptr void) *)
(* ppDescriptor : IMFStreamDescriptor** 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 mfplat (t "MFPlat.dll"))
(cffi:use-foreign-library mfplat)

(cffi:defcfun ("MFCreateStreamDescriptor" mfcreate-stream-descriptor :convention :stdcall) :int32
  (dw-stream-identifier :uint32)   ; DWORD
  (c-media-types :uint32)   ; DWORD
  (ap-media-types :pointer)   ; IMFMediaType**
  (pp-descriptor :pointer))   ; IMFStreamDescriptor** out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $MFCreateStreamDescriptor = Win32::API::More->new('MFPlat',
    'int MFCreateStreamDescriptor(DWORD dwStreamIdentifier, DWORD cMediaTypes, LPVOID apMediaTypes, LPVOID ppDescriptor)');
# my $ret = $MFCreateStreamDescriptor->Call($dwStreamIdentifier, $cMediaTypes, $apMediaTypes, $ppDescriptor);
# dwStreamIdentifier : DWORD -> DWORD
# cMediaTypes : DWORD -> DWORD
# apMediaTypes : IMFMediaType** -> LPVOID
# ppDescriptor : IMFStreamDescriptor** out -> LPVOID
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。