MFCreate2DMediaBuffer

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

HRESULT MFCreate2DMediaBuffer(
    DWORD dwWidth,
    DWORD dwHeight,
    DWORD dwFourCC,
    BOOL fBottomUp,
    IMFMediaBuffer** ppBuffer
);

<DllImport("MFPlat.dll", ExactSpelling:=True)>
Public Shared Function MFCreate2DMediaBuffer(
    dwWidth As UInteger,   ' DWORD
    dwHeight As UInteger,   ' DWORD
    dwFourCC As UInteger,   ' DWORD
    fBottomUp As Boolean,   ' BOOL
    ppBuffer As IntPtr   ' IMFMediaBuffer** out
) As Integer
End Function

' dwWidth : DWORD
' dwHeight : DWORD
' dwFourCC : DWORD
' fBottomUp : BOOL
' ppBuffer : IMFMediaBuffer** out
Declare PtrSafe Function MFCreate2DMediaBuffer Lib "mfplat" ( _
    ByVal dwWidth As Long, _
    ByVal dwHeight As Long, _
    ByVal dwFourCC As Long, _
    ByVal fBottomUp 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

MFCreate2DMediaBuffer = ctypes.windll.mfplat.MFCreate2DMediaBuffer
MFCreate2DMediaBuffer.restype = ctypes.c_int
MFCreate2DMediaBuffer.argtypes = [
    wintypes.DWORD,  # dwWidth : DWORD
    wintypes.DWORD,  # dwHeight : DWORD
    wintypes.DWORD,  # dwFourCC : DWORD
    wintypes.BOOL,  # fBottomUp : BOOL
    ctypes.c_void_p,  # ppBuffer : IMFMediaBuffer** out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('MFPlat.dll')
MFCreate2DMediaBuffer = Fiddle::Function.new(
  lib['MFCreate2DMediaBuffer'],
  [
    -Fiddle::TYPE_INT,  # dwWidth : DWORD
    -Fiddle::TYPE_INT,  # dwHeight : DWORD
    -Fiddle::TYPE_INT,  # dwFourCC : DWORD
    Fiddle::TYPE_INT,  # fBottomUp : BOOL
    Fiddle::TYPE_VOIDP,  # ppBuffer : IMFMediaBuffer** out
  ],
  Fiddle::TYPE_INT)

#[link(name = "mfplat")]
extern "system" {
    fn MFCreate2DMediaBuffer(
        dwWidth: u32,  // DWORD
        dwHeight: u32,  // DWORD
        dwFourCC: u32,  // DWORD
        fBottomUp: i32,  // BOOL
        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 MFCreate2DMediaBuffer(uint dwWidth, uint dwHeight, uint dwFourCC, bool fBottomUp, IntPtr ppBuffer);
"@
$api = Add-Type -MemberDefinition $sig -Name 'MFPlat_MFCreate2DMediaBuffer' -Namespace Win32 -PassThru
# $api::MFCreate2DMediaBuffer(dwWidth, dwHeight, dwFourCC, fBottomUp, ppBuffer)

#uselib "MFPlat.dll"
#func global MFCreate2DMediaBuffer "MFCreate2DMediaBuffer" sptr, sptr, sptr, sptr, sptr
; MFCreate2DMediaBuffer dwWidth, dwHeight, dwFourCC, fBottomUp, ppBuffer   ; 戻り値は stat
; dwWidth : DWORD -> "sptr"
; dwHeight : DWORD -> "sptr"
; dwFourCC : DWORD -> "sptr"
; fBottomUp : BOOL -> "sptr"
; ppBuffer : IMFMediaBuffer** 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 MFCreate2DMediaBuffer "MFCreate2DMediaBuffer" int, int, int, int, sptr
; res = MFCreate2DMediaBuffer(dwWidth, dwHeight, dwFourCC, fBottomUp, ppBuffer)
; dwWidth : DWORD -> "int"
; dwHeight : DWORD -> "int"
; dwFourCC : DWORD -> "int"
; fBottomUp : BOOL -> "int"
; ppBuffer : IMFMediaBuffer** out -> "sptr"

; HRESULT MFCreate2DMediaBuffer(DWORD dwWidth, DWORD dwHeight, DWORD dwFourCC, BOOL fBottomUp, IMFMediaBuffer** ppBuffer)
#uselib "MFPlat.dll"
#cfunc global MFCreate2DMediaBuffer "MFCreate2DMediaBuffer" int, int, int, int, intptr
; res = MFCreate2DMediaBuffer(dwWidth, dwHeight, dwFourCC, fBottomUp, ppBuffer)
; dwWidth : DWORD -> "int"
; dwHeight : DWORD -> "int"
; dwFourCC : DWORD -> "int"
; fBottomUp : BOOL -> "int"
; ppBuffer : IMFMediaBuffer** out -> "intptr"

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

var (
	mfplat = windows.NewLazySystemDLL("MFPlat.dll")
	procMFCreate2DMediaBuffer = mfplat.NewProc("MFCreate2DMediaBuffer")
)

// dwWidth (DWORD), dwHeight (DWORD), dwFourCC (DWORD), fBottomUp (BOOL), ppBuffer (IMFMediaBuffer** out)
r1, _, err := procMFCreate2DMediaBuffer.Call(
	uintptr(dwWidth),
	uintptr(dwHeight),
	uintptr(dwFourCC),
	uintptr(fBottomUp),
	uintptr(ppBuffer),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function MFCreate2DMediaBuffer(
  dwWidth: DWORD;   // DWORD
  dwHeight: DWORD;   // DWORD
  dwFourCC: DWORD;   // DWORD
  fBottomUp: BOOL;   // BOOL
  ppBuffer: Pointer   // IMFMediaBuffer** out
): Integer; stdcall;
  external 'MFPlat.dll' name 'MFCreate2DMediaBuffer';

result := DllCall("MFPlat\MFCreate2DMediaBuffer"
    , "UInt", dwWidth   ; DWORD
    , "UInt", dwHeight   ; DWORD
    , "UInt", dwFourCC   ; DWORD
    , "Int", fBottomUp   ; BOOL
    , "Ptr", ppBuffer   ; IMFMediaBuffer** out
    , "Int")   ; return: HRESULT

●MFCreate2DMediaBuffer(dwWidth, dwHeight, dwFourCC, fBottomUp, ppBuffer) = DLL("MFPlat.dll", "int MFCreate2DMediaBuffer(dword, dword, dword, bool, void*)")
# 呼び出し: MFCreate2DMediaBuffer(dwWidth, dwHeight, dwFourCC, fBottomUp, ppBuffer)
# dwWidth : DWORD -> "dword"
# dwHeight : DWORD -> "dword"
# dwFourCC : DWORD -> "dword"
# fBottomUp : BOOL -> "bool"
# 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)。