MFCreateMediaBufferFromMediaType

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

HRESULT MFCreateMediaBufferFromMediaType(
    IMFMediaType* pMediaType,
    LONGLONG llDuration,
    DWORD dwMinLength,
    DWORD dwMinAlignment,
    IMFMediaBuffer** ppBuffer
);

<DllImport("MFPlat.dll", ExactSpelling:=True)>
Public Shared Function MFCreateMediaBufferFromMediaType(
    pMediaType As IntPtr,   ' IMFMediaType*
    llDuration As Long,   ' LONGLONG
    dwMinLength As UInteger,   ' DWORD
    dwMinAlignment As UInteger,   ' DWORD
    ppBuffer As IntPtr   ' IMFMediaBuffer** out
) As Integer
End Function

' pMediaType : IMFMediaType*
' llDuration : LONGLONG
' dwMinLength : DWORD
' dwMinAlignment : DWORD
' ppBuffer : IMFMediaBuffer** out
Declare PtrSafe Function MFCreateMediaBufferFromMediaType Lib "mfplat" ( _
    ByVal pMediaType As LongPtr, _
    ByVal llDuration As LongLong, _
    ByVal dwMinLength As Long, _
    ByVal dwMinAlignment As Long, _
    ByVal ppBuffer 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

MFCreateMediaBufferFromMediaType = ctypes.windll.mfplat.MFCreateMediaBufferFromMediaType
MFCreateMediaBufferFromMediaType.restype = ctypes.c_int
MFCreateMediaBufferFromMediaType.argtypes = [
    ctypes.c_void_p,  # pMediaType : IMFMediaType*
    ctypes.c_longlong,  # llDuration : LONGLONG
    wintypes.DWORD,  # dwMinLength : DWORD
    wintypes.DWORD,  # dwMinAlignment : DWORD
    ctypes.c_void_p,  # ppBuffer : IMFMediaBuffer** out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('MFPlat.dll')
MFCreateMediaBufferFromMediaType = Fiddle::Function.new(
  lib['MFCreateMediaBufferFromMediaType'],
  [
    Fiddle::TYPE_VOIDP,  # pMediaType : IMFMediaType*
    Fiddle::TYPE_LONG_LONG,  # llDuration : LONGLONG
    -Fiddle::TYPE_INT,  # dwMinLength : DWORD
    -Fiddle::TYPE_INT,  # dwMinAlignment : DWORD
    Fiddle::TYPE_VOIDP,  # ppBuffer : IMFMediaBuffer** out
  ],
  Fiddle::TYPE_INT)

#[link(name = "mfplat")]
extern "system" {
    fn MFCreateMediaBufferFromMediaType(
        pMediaType: *mut core::ffi::c_void,  // IMFMediaType*
        llDuration: i64,  // LONGLONG
        dwMinLength: u32,  // DWORD
        dwMinAlignment: u32,  // DWORD
        ppBuffer: *mut *mut core::ffi::c_void  // IMFMediaBuffer** out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("MFPlat.dll")]
public static extern int MFCreateMediaBufferFromMediaType(IntPtr pMediaType, long llDuration, uint dwMinLength, uint dwMinAlignment, IntPtr ppBuffer);
"@
$api = Add-Type -MemberDefinition $sig -Name 'MFPlat_MFCreateMediaBufferFromMediaType' -Namespace Win32 -PassThru
# $api::MFCreateMediaBufferFromMediaType(pMediaType, llDuration, dwMinLength, dwMinAlignment, ppBuffer)

#uselib "MFPlat.dll"
#func global MFCreateMediaBufferFromMediaType "MFCreateMediaBufferFromMediaType" sptr, sptr, sptr, sptr, sptr
; MFCreateMediaBufferFromMediaType pMediaType, llDuration, dwMinLength, dwMinAlignment, ppBuffer   ; 戻り値は stat
; pMediaType : IMFMediaType* -> "sptr"
; llDuration : LONGLONG -> "sptr"
; dwMinLength : DWORD -> "sptr"
; dwMinAlignment : DWORD -> "sptr"
; ppBuffer : IMFMediaBuffer** out -> "sptr"
; ※HSP3.7は int64 引数(64bit値渡し)に非対応です。
; ※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 MFCreateMediaBufferFromMediaType "MFCreateMediaBufferFromMediaType" sptr, int64, int, int, sptr
; res = MFCreateMediaBufferFromMediaType(pMediaType, llDuration, dwMinLength, dwMinAlignment, ppBuffer)
; pMediaType : IMFMediaType* -> "sptr"
; llDuration : LONGLONG -> "int64"
; dwMinLength : DWORD -> "int"
; dwMinAlignment : DWORD -> "int"
; ppBuffer : IMFMediaBuffer** out -> "sptr"
; ※int64 引数の DLL 値渡しは x64 ランタイム(hsp3_64)のみ対応(x86 は未対応)。

; HRESULT MFCreateMediaBufferFromMediaType(IMFMediaType* pMediaType, LONGLONG llDuration, DWORD dwMinLength, DWORD dwMinAlignment, IMFMediaBuffer** ppBuffer)
#uselib "MFPlat.dll"
#cfunc global MFCreateMediaBufferFromMediaType "MFCreateMediaBufferFromMediaType" intptr, int64, int, int, intptr
; res = MFCreateMediaBufferFromMediaType(pMediaType, llDuration, dwMinLength, dwMinAlignment, ppBuffer)
; pMediaType : IMFMediaType* -> "intptr"
; llDuration : LONGLONG -> "int64"
; dwMinLength : DWORD -> "int"
; dwMinAlignment : DWORD -> "int"
; ppBuffer : IMFMediaBuffer** out -> "intptr"

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

var (
	mfplat = windows.NewLazySystemDLL("MFPlat.dll")
	procMFCreateMediaBufferFromMediaType = mfplat.NewProc("MFCreateMediaBufferFromMediaType")
)

// pMediaType (IMFMediaType*), llDuration (LONGLONG), dwMinLength (DWORD), dwMinAlignment (DWORD), ppBuffer (IMFMediaBuffer** out)
r1, _, err := procMFCreateMediaBufferFromMediaType.Call(
	uintptr(pMediaType),
	uintptr(llDuration),
	uintptr(dwMinLength),
	uintptr(dwMinAlignment),
	uintptr(ppBuffer),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function MFCreateMediaBufferFromMediaType(
  pMediaType: Pointer;   // IMFMediaType*
  llDuration: Int64;   // LONGLONG
  dwMinLength: DWORD;   // DWORD
  dwMinAlignment: DWORD;   // DWORD
  ppBuffer: Pointer   // IMFMediaBuffer** out
): Integer; stdcall;
  external 'MFPlat.dll' name 'MFCreateMediaBufferFromMediaType';

result := DllCall("MFPlat\MFCreateMediaBufferFromMediaType"
    , "Ptr", pMediaType   ; IMFMediaType*
    , "Int64", llDuration   ; LONGLONG
    , "UInt", dwMinLength   ; DWORD
    , "UInt", dwMinAlignment   ; DWORD
    , "Ptr", ppBuffer   ; IMFMediaBuffer** out
    , "Int")   ; return: HRESULT

●MFCreateMediaBufferFromMediaType(pMediaType, llDuration, dwMinLength, dwMinAlignment, ppBuffer) = DLL("MFPlat.dll", "int MFCreateMediaBufferFromMediaType(void*, int64, dword, dword, void*)")
# 呼び出し: MFCreateMediaBufferFromMediaType(pMediaType, llDuration, dwMinLength, dwMinAlignment, ppBuffer)
# pMediaType : IMFMediaType* -> "void*"
# llDuration : LONGLONG -> "int64"
# dwMinLength : DWORD -> "dword"
# dwMinAlignment : DWORD -> "dword"
# ppBuffer : IMFMediaBuffer** 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 MFCreateMediaBufferFromMediaType(
    pMediaType: ?*anyopaque, // IMFMediaType*
    llDuration: i64, // LONGLONG
    dwMinLength: u32, // DWORD
    dwMinAlignment: u32, // DWORD
    ppBuffer: ?*anyopaque // IMFMediaBuffer** out
) callconv(std.os.windows.WINAPI) i32;

proc MFCreateMediaBufferFromMediaType(
    pMediaType: pointer,  # IMFMediaType*
    llDuration: int64,  # LONGLONG
    dwMinLength: uint32,  # DWORD
    dwMinAlignment: uint32,  # DWORD
    ppBuffer: pointer  # IMFMediaBuffer** out
): int32 {.importc: "MFCreateMediaBufferFromMediaType", stdcall, dynlib: "MFPlat.dll".}

pragma(lib, "mfplat");
extern(Windows)
int MFCreateMediaBufferFromMediaType(
    void* pMediaType,   // IMFMediaType*
    long llDuration,   // LONGLONG
    uint dwMinLength,   // DWORD
    uint dwMinAlignment,   // DWORD
    void* ppBuffer   // IMFMediaBuffer** out
);

ccall((:MFCreateMediaBufferFromMediaType, "MFPlat.dll"), stdcall, Int32,
      (Ptr{Cvoid}, Int64, UInt32, UInt32, Ptr{Cvoid}),
      pMediaType, llDuration, dwMinLength, dwMinAlignment, ppBuffer)
# pMediaType : IMFMediaType* -> Ptr{Cvoid}
# llDuration : LONGLONG -> Int64
# dwMinLength : DWORD -> UInt32
# dwMinAlignment : DWORD -> UInt32
# ppBuffer : IMFMediaBuffer** 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 MFCreateMediaBufferFromMediaType(
    void* pMediaType,
    int64_t llDuration,
    uint32_t dwMinLength,
    uint32_t dwMinAlignment,
    void* ppBuffer);
]]
local mfplat = ffi.load("mfplat")
-- mfplat.MFCreateMediaBufferFromMediaType(pMediaType, llDuration, dwMinLength, dwMinAlignment, ppBuffer)
-- pMediaType : IMFMediaType*
-- llDuration : LONGLONG
-- dwMinLength : DWORD
-- dwMinAlignment : DWORD
-- ppBuffer : IMFMediaBuffer** 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 MFCreateMediaBufferFromMediaType = lib.func('__stdcall', 'MFCreateMediaBufferFromMediaType', 'int32_t', ['void *', 'int64_t', 'uint32_t', 'uint32_t', 'void *']);
// MFCreateMediaBufferFromMediaType(pMediaType, llDuration, dwMinLength, dwMinAlignment, ppBuffer)
// pMediaType : IMFMediaType* -> 'void *'
// llDuration : LONGLONG -> 'int64_t'
// dwMinLength : DWORD -> 'uint32_t'
// dwMinAlignment : DWORD -> 'uint32_t'
// ppBuffer : IMFMediaBuffer** 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", {
  MFCreateMediaBufferFromMediaType: { parameters: ["pointer", "i64", "u32", "u32", "pointer"], result: "i32" },
});
// lib.symbols.MFCreateMediaBufferFromMediaType(pMediaType, llDuration, dwMinLength, dwMinAlignment, ppBuffer)
// pMediaType : IMFMediaType* -> "pointer"
// llDuration : LONGLONG -> "i64"
// dwMinLength : DWORD -> "u32"
// dwMinAlignment : DWORD -> "u32"
// ppBuffer : IMFMediaBuffer** 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 MFCreateMediaBufferFromMediaType(
    void* pMediaType,
    int64_t llDuration,
    uint32_t dwMinLength,
    uint32_t dwMinAlignment,
    void* ppBuffer);
C, "MFPlat.dll");
// $ffi->MFCreateMediaBufferFromMediaType(pMediaType, llDuration, dwMinLength, dwMinAlignment, ppBuffer);
// pMediaType : IMFMediaType*
// llDuration : LONGLONG
// dwMinLength : DWORD
// dwMinAlignment : DWORD
// ppBuffer : IMFMediaBuffer** 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 MFCreateMediaBufferFromMediaType(
        Pointer pMediaType,   // IMFMediaType*
        long llDuration,   // LONGLONG
        int dwMinLength,   // DWORD
        int dwMinAlignment,   // DWORD
        Pointer ppBuffer   // IMFMediaBuffer** out
    );
}

@[Link("mfplat")]
lib LibMFPlat
  fun MFCreateMediaBufferFromMediaType = MFCreateMediaBufferFromMediaType(
    pMediaType : Void*,   # IMFMediaType*
    llDuration : Int64,   # LONGLONG
    dwMinLength : UInt32,   # DWORD
    dwMinAlignment : UInt32,   # DWORD
    ppBuffer : Void*   # IMFMediaBuffer** 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 MFCreateMediaBufferFromMediaTypeNative = Int32 Function(Pointer<Void>, Int64, Uint32, Uint32, Pointer<Void>);
typedef MFCreateMediaBufferFromMediaTypeDart = int Function(Pointer<Void>, int, int, int, Pointer<Void>);
final MFCreateMediaBufferFromMediaType = DynamicLibrary.open('MFPlat.dll')
    .lookupFunction<MFCreateMediaBufferFromMediaTypeNative, MFCreateMediaBufferFromMediaTypeDart>('MFCreateMediaBufferFromMediaType');
// pMediaType : IMFMediaType* -> Pointer<Void>
// llDuration : LONGLONG -> Int64
// dwMinLength : DWORD -> Uint32
// dwMinAlignment : DWORD -> Uint32
// ppBuffer : IMFMediaBuffer** out -> Pointer<Void>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function MFCreateMediaBufferFromMediaType(
  pMediaType: Pointer;   // IMFMediaType*
  llDuration: Int64;   // LONGLONG
  dwMinLength: DWORD;   // DWORD
  dwMinAlignment: DWORD;   // DWORD
  ppBuffer: Pointer   // IMFMediaBuffer** out
): Integer; stdcall;
  external 'MFPlat.dll' name 'MFCreateMediaBufferFromMediaType';

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

foreign import stdcall safe "MFCreateMediaBufferFromMediaType"
  c_MFCreateMediaBufferFromMediaType :: Ptr () -> Int64 -> Word32 -> Word32 -> Ptr () -> IO Int32
-- pMediaType : IMFMediaType* -> Ptr ()
-- llDuration : LONGLONG -> Int64
-- dwMinLength : DWORD -> Word32
-- dwMinAlignment : DWORD -> Word32
-- ppBuffer : IMFMediaBuffer** 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 mfcreatemediabufferfrommediatype =
  foreign "MFCreateMediaBufferFromMediaType"
    ((ptr void) @-> int64_t @-> uint32_t @-> uint32_t @-> (ptr void) @-> returning int32_t)
(* pMediaType : IMFMediaType* -> (ptr void) *)
(* llDuration : LONGLONG -> int64_t *)
(* dwMinLength : DWORD -> uint32_t *)
(* dwMinAlignment : DWORD -> uint32_t *)
(* ppBuffer : IMFMediaBuffer** 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 ("MFCreateMediaBufferFromMediaType" mfcreate-media-buffer-from-media-type :convention :stdcall) :int32
  (p-media-type :pointer)   ; IMFMediaType*
  (ll-duration :int64)   ; LONGLONG
  (dw-min-length :uint32)   ; DWORD
  (dw-min-alignment :uint32)   ; DWORD
  (pp-buffer :pointer))   ; IMFMediaBuffer** out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $MFCreateMediaBufferFromMediaType = Win32::API::More->new('MFPlat',
    'int MFCreateMediaBufferFromMediaType(LPVOID pMediaType, INT64 llDuration, DWORD dwMinLength, DWORD dwMinAlignment, LPVOID ppBuffer)');
# my $ret = $MFCreateMediaBufferFromMediaType->Call($pMediaType, $llDuration, $dwMinLength, $dwMinAlignment, $ppBuffer);
# pMediaType : IMFMediaType* -> LPVOID
# llDuration : LONGLONG -> INT64
# dwMinLength : DWORD -> DWORD
# dwMinAlignment : DWORD -> DWORD
# ppBuffer : IMFMediaBuffer** out -> LPVOID
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。