MFCreateVideoSampleFromSurface

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

HRESULT MFCreateVideoSampleFromSurface(
    IUnknown* pUnkSurface,
    IMFSample** ppSample
);

<DllImport("EVR.dll", ExactSpelling:=True)>
Public Shared Function MFCreateVideoSampleFromSurface(
    pUnkSurface As IntPtr,   ' IUnknown*
    ppSample As IntPtr   ' IMFSample** out
) As Integer
End Function

' pUnkSurface : IUnknown*
' ppSample : IMFSample** out
Declare PtrSafe Function MFCreateVideoSampleFromSurface Lib "evr" ( _
    ByVal pUnkSurface As LongPtr, _
    ByVal ppSample 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

MFCreateVideoSampleFromSurface = ctypes.windll.evr.MFCreateVideoSampleFromSurface
MFCreateVideoSampleFromSurface.restype = ctypes.c_int
MFCreateVideoSampleFromSurface.argtypes = [
    ctypes.c_void_p,  # pUnkSurface : IUnknown*
    ctypes.c_void_p,  # ppSample : IMFSample** out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('EVR.dll')
MFCreateVideoSampleFromSurface = Fiddle::Function.new(
  lib['MFCreateVideoSampleFromSurface'],
  [
    Fiddle::TYPE_VOIDP,  # pUnkSurface : IUnknown*
    Fiddle::TYPE_VOIDP,  # ppSample : IMFSample** out
  ],
  Fiddle::TYPE_INT)

#[link(name = "evr")]
extern "system" {
    fn MFCreateVideoSampleFromSurface(
        pUnkSurface: *mut core::ffi::c_void,  // IUnknown*
        ppSample: *mut *mut core::ffi::c_void  // IMFSample** out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("EVR.dll")]
public static extern int MFCreateVideoSampleFromSurface(IntPtr pUnkSurface, IntPtr ppSample);
"@
$api = Add-Type -MemberDefinition $sig -Name 'EVR_MFCreateVideoSampleFromSurface' -Namespace Win32 -PassThru
# $api::MFCreateVideoSampleFromSurface(pUnkSurface, ppSample)

#uselib "EVR.dll"
#func global MFCreateVideoSampleFromSurface "MFCreateVideoSampleFromSurface" sptr, sptr
; MFCreateVideoSampleFromSurface pUnkSurface, ppSample   ; 戻り値は stat
; pUnkSurface : IUnknown* -> "sptr"
; ppSample : IMFSample** 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 "EVR.dll"
#cfunc global MFCreateVideoSampleFromSurface "MFCreateVideoSampleFromSurface" sptr, sptr
; res = MFCreateVideoSampleFromSurface(pUnkSurface, ppSample)
; pUnkSurface : IUnknown* -> "sptr"
; ppSample : IMFSample** out -> "sptr"

; HRESULT MFCreateVideoSampleFromSurface(IUnknown* pUnkSurface, IMFSample** ppSample)
#uselib "EVR.dll"
#cfunc global MFCreateVideoSampleFromSurface "MFCreateVideoSampleFromSurface" intptr, intptr
; res = MFCreateVideoSampleFromSurface(pUnkSurface, ppSample)
; pUnkSurface : IUnknown* -> "intptr"
; ppSample : IMFSample** out -> "intptr"

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

var (
	evr = windows.NewLazySystemDLL("EVR.dll")
	procMFCreateVideoSampleFromSurface = evr.NewProc("MFCreateVideoSampleFromSurface")
)

// pUnkSurface (IUnknown*), ppSample (IMFSample** out)
r1, _, err := procMFCreateVideoSampleFromSurface.Call(
	uintptr(pUnkSurface),
	uintptr(ppSample),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function MFCreateVideoSampleFromSurface(
  pUnkSurface: Pointer;   // IUnknown*
  ppSample: Pointer   // IMFSample** out
): Integer; stdcall;
  external 'EVR.dll' name 'MFCreateVideoSampleFromSurface';

result := DllCall("EVR\MFCreateVideoSampleFromSurface"
    , "Ptr", pUnkSurface   ; IUnknown*
    , "Ptr", ppSample   ; IMFSample** out
    , "Int")   ; return: HRESULT

●MFCreateVideoSampleFromSurface(pUnkSurface, ppSample) = DLL("EVR.dll", "int MFCreateVideoSampleFromSurface(void*, void*)")
# 呼び出し: MFCreateVideoSampleFromSurface(pUnkSurface, ppSample)
# pUnkSurface : IUnknown* -> "void*"
# ppSample : IMFSample** 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)。