MFCreateContentDecryptorContext

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

HRESULT MFCreateContentDecryptorContext(
    const GUID* guidMediaProtectionSystemId,
    IMFDXGIDeviceManager* pD3DManager,   // optional
    IMFContentProtectionDevice* pContentProtectionDevice,
    IMFContentDecryptorContext** ppContentDecryptorContext
);

<DllImport("MFPlat.dll", ExactSpelling:=True)>
Public Shared Function MFCreateContentDecryptorContext(
    ByRef guidMediaProtectionSystemId As Guid,   ' GUID*
    pD3DManager As IntPtr,   ' IMFDXGIDeviceManager* optional
    pContentProtectionDevice As IntPtr,   ' IMFContentProtectionDevice*
    ppContentDecryptorContext As IntPtr   ' IMFContentDecryptorContext** out
) As Integer
End Function

' guidMediaProtectionSystemId : GUID*
' pD3DManager : IMFDXGIDeviceManager* optional
' pContentProtectionDevice : IMFContentProtectionDevice*
' ppContentDecryptorContext : IMFContentDecryptorContext** out
Declare PtrSafe Function MFCreateContentDecryptorContext Lib "mfplat" ( _
    ByVal guidMediaProtectionSystemId As LongPtr, _
    ByVal pD3DManager As LongPtr, _
    ByVal pContentProtectionDevice As LongPtr, _
    ByVal ppContentDecryptorContext 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

MFCreateContentDecryptorContext = ctypes.windll.mfplat.MFCreateContentDecryptorContext
MFCreateContentDecryptorContext.restype = ctypes.c_int
MFCreateContentDecryptorContext.argtypes = [
    ctypes.c_void_p,  # guidMediaProtectionSystemId : GUID*
    ctypes.c_void_p,  # pD3DManager : IMFDXGIDeviceManager* optional
    ctypes.c_void_p,  # pContentProtectionDevice : IMFContentProtectionDevice*
    ctypes.c_void_p,  # ppContentDecryptorContext : IMFContentDecryptorContext** out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('MFPlat.dll')
MFCreateContentDecryptorContext = Fiddle::Function.new(
  lib['MFCreateContentDecryptorContext'],
  [
    Fiddle::TYPE_VOIDP,  # guidMediaProtectionSystemId : GUID*
    Fiddle::TYPE_VOIDP,  # pD3DManager : IMFDXGIDeviceManager* optional
    Fiddle::TYPE_VOIDP,  # pContentProtectionDevice : IMFContentProtectionDevice*
    Fiddle::TYPE_VOIDP,  # ppContentDecryptorContext : IMFContentDecryptorContext** out
  ],
  Fiddle::TYPE_INT)

#[link(name = "mfplat")]
extern "system" {
    fn MFCreateContentDecryptorContext(
        guidMediaProtectionSystemId: *const GUID,  // GUID*
        pD3DManager: *mut core::ffi::c_void,  // IMFDXGIDeviceManager* optional
        pContentProtectionDevice: *mut core::ffi::c_void,  // IMFContentProtectionDevice*
        ppContentDecryptorContext: *mut *mut core::ffi::c_void  // IMFContentDecryptorContext** out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("MFPlat.dll")]
public static extern int MFCreateContentDecryptorContext(ref Guid guidMediaProtectionSystemId, IntPtr pD3DManager, IntPtr pContentProtectionDevice, IntPtr ppContentDecryptorContext);
"@
$api = Add-Type -MemberDefinition $sig -Name 'MFPlat_MFCreateContentDecryptorContext' -Namespace Win32 -PassThru
# $api::MFCreateContentDecryptorContext(guidMediaProtectionSystemId, pD3DManager, pContentProtectionDevice, ppContentDecryptorContext)

#uselib "MFPlat.dll"
#func global MFCreateContentDecryptorContext "MFCreateContentDecryptorContext" sptr, sptr, sptr, sptr
; MFCreateContentDecryptorContext varptr(guidMediaProtectionSystemId), pD3DManager, pContentProtectionDevice, ppContentDecryptorContext   ; 戻り値は stat
; guidMediaProtectionSystemId : GUID* -> "sptr"
; pD3DManager : IMFDXGIDeviceManager* optional -> "sptr"
; pContentProtectionDevice : IMFContentProtectionDevice* -> "sptr"
; ppContentDecryptorContext : IMFContentDecryptorContext** 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")
	procMFCreateContentDecryptorContext = mfplat.NewProc("MFCreateContentDecryptorContext")
)

// guidMediaProtectionSystemId (GUID*), pD3DManager (IMFDXGIDeviceManager* optional), pContentProtectionDevice (IMFContentProtectionDevice*), ppContentDecryptorContext (IMFContentDecryptorContext** out)
r1, _, err := procMFCreateContentDecryptorContext.Call(
	uintptr(guidMediaProtectionSystemId),
	uintptr(pD3DManager),
	uintptr(pContentProtectionDevice),
	uintptr(ppContentDecryptorContext),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function MFCreateContentDecryptorContext(
  guidMediaProtectionSystemId: PGUID;   // GUID*
  pD3DManager: Pointer;   // IMFDXGIDeviceManager* optional
  pContentProtectionDevice: Pointer;   // IMFContentProtectionDevice*
  ppContentDecryptorContext: Pointer   // IMFContentDecryptorContext** out
): Integer; stdcall;
  external 'MFPlat.dll' name 'MFCreateContentDecryptorContext';

result := DllCall("MFPlat\MFCreateContentDecryptorContext"
    , "Ptr", guidMediaProtectionSystemId   ; GUID*
    , "Ptr", pD3DManager   ; IMFDXGIDeviceManager* optional
    , "Ptr", pContentProtectionDevice   ; IMFContentProtectionDevice*
    , "Ptr", ppContentDecryptorContext   ; IMFContentDecryptorContext** out
    , "Int")   ; return: HRESULT

●MFCreateContentDecryptorContext(guidMediaProtectionSystemId, pD3DManager, pContentProtectionDevice, ppContentDecryptorContext) = DLL("MFPlat.dll", "int MFCreateContentDecryptorContext(void*, void*, void*, void*)")
# 呼び出し: MFCreateContentDecryptorContext(guidMediaProtectionSystemId, pD3DManager, pContentProtectionDevice, ppContentDecryptorContext)
# guidMediaProtectionSystemId : GUID* -> "void*"
# pD3DManager : IMFDXGIDeviceManager* optional -> "void*"
# pContentProtectionDevice : IMFContentProtectionDevice* -> "void*"
# ppContentDecryptorContext : IMFContentDecryptorContext** 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 MFCreateContentDecryptorContext(
    guidMediaProtectionSystemId: [*c]GUID, // GUID*
    pD3DManager: ?*anyopaque, // IMFDXGIDeviceManager* optional
    pContentProtectionDevice: ?*anyopaque, // IMFContentProtectionDevice*
    ppContentDecryptorContext: ?*anyopaque // IMFContentDecryptorContext** out
) callconv(std.os.windows.WINAPI) i32;

proc MFCreateContentDecryptorContext(
    guidMediaProtectionSystemId: ptr GUID,  # GUID*
    pD3DManager: pointer,  # IMFDXGIDeviceManager* optional
    pContentProtectionDevice: pointer,  # IMFContentProtectionDevice*
    ppContentDecryptorContext: pointer  # IMFContentDecryptorContext** out
): int32 {.importc: "MFCreateContentDecryptorContext", stdcall, dynlib: "MFPlat.dll".}

pragma(lib, "mfplat");
extern(Windows)
int MFCreateContentDecryptorContext(
    GUID* guidMediaProtectionSystemId,   // GUID*
    void* pD3DManager,   // IMFDXGIDeviceManager* optional
    void* pContentProtectionDevice,   // IMFContentProtectionDevice*
    void* ppContentDecryptorContext   // IMFContentDecryptorContext** out
);

ccall((:MFCreateContentDecryptorContext, "MFPlat.dll"), stdcall, Int32,
      (Ptr{GUID}, Ptr{Cvoid}, Ptr{Cvoid}, Ptr{Cvoid}),
      guidMediaProtectionSystemId, pD3DManager, pContentProtectionDevice, ppContentDecryptorContext)
# guidMediaProtectionSystemId : GUID* -> Ptr{GUID}
# pD3DManager : IMFDXGIDeviceManager* optional -> Ptr{Cvoid}
# pContentProtectionDevice : IMFContentProtectionDevice* -> Ptr{Cvoid}
# ppContentDecryptorContext : IMFContentDecryptorContext** 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 MFCreateContentDecryptorContext(
    void* guidMediaProtectionSystemId,
    void* pD3DManager,
    void* pContentProtectionDevice,
    void* ppContentDecryptorContext);
]]
local mfplat = ffi.load("mfplat")
-- mfplat.MFCreateContentDecryptorContext(guidMediaProtectionSystemId, pD3DManager, pContentProtectionDevice, ppContentDecryptorContext)
-- guidMediaProtectionSystemId : GUID*
-- pD3DManager : IMFDXGIDeviceManager* optional
-- pContentProtectionDevice : IMFContentProtectionDevice*
-- ppContentDecryptorContext : IMFContentDecryptorContext** 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 MFCreateContentDecryptorContext = lib.func('__stdcall', 'MFCreateContentDecryptorContext', 'int32_t', ['void *', 'void *', 'void *', 'void *']);
// MFCreateContentDecryptorContext(guidMediaProtectionSystemId, pD3DManager, pContentProtectionDevice, ppContentDecryptorContext)
// guidMediaProtectionSystemId : GUID* -> 'void *'
// pD3DManager : IMFDXGIDeviceManager* optional -> 'void *'
// pContentProtectionDevice : IMFContentProtectionDevice* -> 'void *'
// ppContentDecryptorContext : IMFContentDecryptorContext** 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", {
  MFCreateContentDecryptorContext: { parameters: ["pointer", "pointer", "pointer", "pointer"], result: "i32" },
});
// lib.symbols.MFCreateContentDecryptorContext(guidMediaProtectionSystemId, pD3DManager, pContentProtectionDevice, ppContentDecryptorContext)
// guidMediaProtectionSystemId : GUID* -> "pointer"
// pD3DManager : IMFDXGIDeviceManager* optional -> "pointer"
// pContentProtectionDevice : IMFContentProtectionDevice* -> "pointer"
// ppContentDecryptorContext : IMFContentDecryptorContext** 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 MFCreateContentDecryptorContext(
    void* guidMediaProtectionSystemId,
    void* pD3DManager,
    void* pContentProtectionDevice,
    void* ppContentDecryptorContext);
C, "MFPlat.dll");
// $ffi->MFCreateContentDecryptorContext(guidMediaProtectionSystemId, pD3DManager, pContentProtectionDevice, ppContentDecryptorContext);
// guidMediaProtectionSystemId : GUID*
// pD3DManager : IMFDXGIDeviceManager* optional
// pContentProtectionDevice : IMFContentProtectionDevice*
// ppContentDecryptorContext : IMFContentDecryptorContext** 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 MFCreateContentDecryptorContext(
        Pointer guidMediaProtectionSystemId,   // GUID*
        Pointer pD3DManager,   // IMFDXGIDeviceManager* optional
        Pointer pContentProtectionDevice,   // IMFContentProtectionDevice*
        Pointer ppContentDecryptorContext   // IMFContentDecryptorContext** out
    );
}

@[Link("mfplat")]
lib LibMFPlat
  fun MFCreateContentDecryptorContext = MFCreateContentDecryptorContext(
    guidMediaProtectionSystemId : GUID*,   # GUID*
    pD3DManager : Void*,   # IMFDXGIDeviceManager* optional
    pContentProtectionDevice : Void*,   # IMFContentProtectionDevice*
    ppContentDecryptorContext : Void*   # IMFContentDecryptorContext** 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 MFCreateContentDecryptorContextNative = Int32 Function(Pointer<Void>, Pointer<Void>, Pointer<Void>, Pointer<Void>);
typedef MFCreateContentDecryptorContextDart = int Function(Pointer<Void>, Pointer<Void>, Pointer<Void>, Pointer<Void>);
final MFCreateContentDecryptorContext = DynamicLibrary.open('MFPlat.dll')
    .lookupFunction<MFCreateContentDecryptorContextNative, MFCreateContentDecryptorContextDart>('MFCreateContentDecryptorContext');
// guidMediaProtectionSystemId : GUID* -> Pointer<Void>
// pD3DManager : IMFDXGIDeviceManager* optional -> Pointer<Void>
// pContentProtectionDevice : IMFContentProtectionDevice* -> Pointer<Void>
// ppContentDecryptorContext : IMFContentDecryptorContext** out -> Pointer<Void>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function MFCreateContentDecryptorContext(
  guidMediaProtectionSystemId: PGUID;   // GUID*
  pD3DManager: Pointer;   // IMFDXGIDeviceManager* optional
  pContentProtectionDevice: Pointer;   // IMFContentProtectionDevice*
  ppContentDecryptorContext: Pointer   // IMFContentDecryptorContext** out
): Integer; stdcall;
  external 'MFPlat.dll' name 'MFCreateContentDecryptorContext';

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

foreign import stdcall safe "MFCreateContentDecryptorContext"
  c_MFCreateContentDecryptorContext :: Ptr () -> Ptr () -> Ptr () -> Ptr () -> IO Int32
-- guidMediaProtectionSystemId : GUID* -> Ptr ()
-- pD3DManager : IMFDXGIDeviceManager* optional -> Ptr ()
-- pContentProtectionDevice : IMFContentProtectionDevice* -> Ptr ()
-- ppContentDecryptorContext : IMFContentDecryptorContext** 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 mfcreatecontentdecryptorcontext =
  foreign "MFCreateContentDecryptorContext"
    ((ptr void) @-> (ptr void) @-> (ptr void) @-> (ptr void) @-> returning int32_t)
(* guidMediaProtectionSystemId : GUID* -> (ptr void) *)
(* pD3DManager : IMFDXGIDeviceManager* optional -> (ptr void) *)
(* pContentProtectionDevice : IMFContentProtectionDevice* -> (ptr void) *)
(* ppContentDecryptorContext : IMFContentDecryptorContext** 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 ("MFCreateContentDecryptorContext" mfcreate-content-decryptor-context :convention :stdcall) :int32
  (guid-media-protection-system-id :pointer)   ; GUID*
  (p-d3-dmanager :pointer)   ; IMFDXGIDeviceManager* optional
  (p-content-protection-device :pointer)   ; IMFContentProtectionDevice*
  (pp-content-decryptor-context :pointer))   ; IMFContentDecryptorContext** out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $MFCreateContentDecryptorContext = Win32::API::More->new('MFPlat',
    'int MFCreateContentDecryptorContext(LPVOID guidMediaProtectionSystemId, LPVOID pD3DManager, LPVOID pContentProtectionDevice, LPVOID ppContentDecryptorContext)');
# my $ret = $MFCreateContentDecryptorContext->Call($guidMediaProtectionSystemId, $pD3DManager, $pContentProtectionDevice, $ppContentDecryptorContext);
# guidMediaProtectionSystemId : GUID* -> LPVOID
# pD3DManager : IMFDXGIDeviceManager* optional -> LPVOID
# pContentProtectionDevice : IMFContentProtectionDevice* -> LPVOID
# ppContentDecryptorContext : IMFContentDecryptorContext** out -> LPVOID
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。