MFCreateDXGISurfaceBuffer

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

HRESULT MFCreateDXGISurfaceBuffer(
    const GUID* riid,
    IUnknown* punkSurface,
    DWORD uSubresourceIndex,
    BOOL fBottomUpWhenLinear,
    IMFMediaBuffer** ppBuffer
);

<DllImport("MFPlat.dll", ExactSpelling:=True)>
Public Shared Function MFCreateDXGISurfaceBuffer(
    ByRef riid As Guid,   ' GUID*
    punkSurface As IntPtr,   ' IUnknown*
    uSubresourceIndex As UInteger,   ' DWORD
    fBottomUpWhenLinear As Boolean,   ' BOOL
    ppBuffer As IntPtr   ' IMFMediaBuffer** out
) As Integer
End Function

' riid : GUID*
' punkSurface : IUnknown*
' uSubresourceIndex : DWORD
' fBottomUpWhenLinear : BOOL
' ppBuffer : IMFMediaBuffer** out
Declare PtrSafe Function MFCreateDXGISurfaceBuffer Lib "mfplat" ( _
    ByVal riid As LongPtr, _
    ByVal punkSurface As LongPtr, _
    ByVal uSubresourceIndex As Long, _
    ByVal fBottomUpWhenLinear 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

MFCreateDXGISurfaceBuffer = ctypes.windll.mfplat.MFCreateDXGISurfaceBuffer
MFCreateDXGISurfaceBuffer.restype = ctypes.c_int
MFCreateDXGISurfaceBuffer.argtypes = [
    ctypes.c_void_p,  # riid : GUID*
    ctypes.c_void_p,  # punkSurface : IUnknown*
    wintypes.DWORD,  # uSubresourceIndex : DWORD
    wintypes.BOOL,  # fBottomUpWhenLinear : BOOL
    ctypes.c_void_p,  # ppBuffer : IMFMediaBuffer** out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('MFPlat.dll')
MFCreateDXGISurfaceBuffer = Fiddle::Function.new(
  lib['MFCreateDXGISurfaceBuffer'],
  [
    Fiddle::TYPE_VOIDP,  # riid : GUID*
    Fiddle::TYPE_VOIDP,  # punkSurface : IUnknown*
    -Fiddle::TYPE_INT,  # uSubresourceIndex : DWORD
    Fiddle::TYPE_INT,  # fBottomUpWhenLinear : BOOL
    Fiddle::TYPE_VOIDP,  # ppBuffer : IMFMediaBuffer** out
  ],
  Fiddle::TYPE_INT)

#[link(name = "mfplat")]
extern "system" {
    fn MFCreateDXGISurfaceBuffer(
        riid: *const GUID,  // GUID*
        punkSurface: *mut core::ffi::c_void,  // IUnknown*
        uSubresourceIndex: u32,  // DWORD
        fBottomUpWhenLinear: 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 MFCreateDXGISurfaceBuffer(ref Guid riid, IntPtr punkSurface, uint uSubresourceIndex, bool fBottomUpWhenLinear, IntPtr ppBuffer);
"@
$api = Add-Type -MemberDefinition $sig -Name 'MFPlat_MFCreateDXGISurfaceBuffer' -Namespace Win32 -PassThru
# $api::MFCreateDXGISurfaceBuffer(riid, punkSurface, uSubresourceIndex, fBottomUpWhenLinear, ppBuffer)

#uselib "MFPlat.dll"
#func global MFCreateDXGISurfaceBuffer "MFCreateDXGISurfaceBuffer" sptr, sptr, sptr, sptr, sptr
; MFCreateDXGISurfaceBuffer varptr(riid), punkSurface, uSubresourceIndex, fBottomUpWhenLinear, ppBuffer   ; 戻り値は stat
; riid : GUID* -> "sptr"
; punkSurface : IUnknown* -> "sptr"
; uSubresourceIndex : DWORD -> "sptr"
; fBottomUpWhenLinear : 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 MFCreateDXGISurfaceBuffer "MFCreateDXGISurfaceBuffer" var, sptr, int, int, sptr
; res = MFCreateDXGISurfaceBuffer(riid, punkSurface, uSubresourceIndex, fBottomUpWhenLinear, ppBuffer)
; riid : GUID* -> "var"
; punkSurface : IUnknown* -> "sptr"
; uSubresourceIndex : DWORD -> "int"
; fBottomUpWhenLinear : BOOL -> "int"
; ppBuffer : IMFMediaBuffer** out -> "sptr"
; ※出力/バッファ引数は var 方式(変数を直接渡す)。varptr 方式にも切替可。

; HRESULT MFCreateDXGISurfaceBuffer(GUID* riid, IUnknown* punkSurface, DWORD uSubresourceIndex, BOOL fBottomUpWhenLinear, IMFMediaBuffer** ppBuffer)
#uselib "MFPlat.dll"
#cfunc global MFCreateDXGISurfaceBuffer "MFCreateDXGISurfaceBuffer" var, intptr, int, int, intptr
; res = MFCreateDXGISurfaceBuffer(riid, punkSurface, uSubresourceIndex, fBottomUpWhenLinear, ppBuffer)
; riid : GUID* -> "var"
; punkSurface : IUnknown* -> "intptr"
; uSubresourceIndex : DWORD -> "int"
; fBottomUpWhenLinear : BOOL -> "int"
; ppBuffer : IMFMediaBuffer** out -> "intptr"
; ※出力/バッファ引数は var 方式(変数を直接渡す)。varptr 方式にも切替可。

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

var (
	mfplat = windows.NewLazySystemDLL("MFPlat.dll")
	procMFCreateDXGISurfaceBuffer = mfplat.NewProc("MFCreateDXGISurfaceBuffer")
)

// riid (GUID*), punkSurface (IUnknown*), uSubresourceIndex (DWORD), fBottomUpWhenLinear (BOOL), ppBuffer (IMFMediaBuffer** out)
r1, _, err := procMFCreateDXGISurfaceBuffer.Call(
	uintptr(riid),
	uintptr(punkSurface),
	uintptr(uSubresourceIndex),
	uintptr(fBottomUpWhenLinear),
	uintptr(ppBuffer),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function MFCreateDXGISurfaceBuffer(
  riid: PGUID;   // GUID*
  punkSurface: Pointer;   // IUnknown*
  uSubresourceIndex: DWORD;   // DWORD
  fBottomUpWhenLinear: BOOL;   // BOOL
  ppBuffer: Pointer   // IMFMediaBuffer** out
): Integer; stdcall;
  external 'MFPlat.dll' name 'MFCreateDXGISurfaceBuffer';

result := DllCall("MFPlat\MFCreateDXGISurfaceBuffer"
    , "Ptr", riid   ; GUID*
    , "Ptr", punkSurface   ; IUnknown*
    , "UInt", uSubresourceIndex   ; DWORD
    , "Int", fBottomUpWhenLinear   ; BOOL
    , "Ptr", ppBuffer   ; IMFMediaBuffer** out
    , "Int")   ; return: HRESULT

●MFCreateDXGISurfaceBuffer(riid, punkSurface, uSubresourceIndex, fBottomUpWhenLinear, ppBuffer) = DLL("MFPlat.dll", "int MFCreateDXGISurfaceBuffer(void*, void*, dword, bool, void*)")
# 呼び出し: MFCreateDXGISurfaceBuffer(riid, punkSurface, uSubresourceIndex, fBottomUpWhenLinear, ppBuffer)
# riid : GUID* -> "void*"
# punkSurface : IUnknown* -> "void*"
# uSubresourceIndex : DWORD -> "dword"
# fBottomUpWhenLinear : 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)。