KsGetMediaType

// ksproxy.ax
#include <windows.h>

HRESULT KsGetMediaType(
    INT Position,
    AM_MEDIA_TYPE* AmMediaType,
    HANDLE FilterHandle,
    DWORD PinFactoryId
);

<DllImport("ksproxy.ax", ExactSpelling:=True)>
Public Shared Function KsGetMediaType(
    Position As Integer,   ' INT
    AmMediaType As IntPtr,   ' AM_MEDIA_TYPE* out
    FilterHandle As IntPtr,   ' HANDLE
    PinFactoryId As UInteger   ' DWORD
) As Integer
End Function

' Position : INT
' AmMediaType : AM_MEDIA_TYPE* out
' FilterHandle : HANDLE
' PinFactoryId : DWORD
Declare PtrSafe Function KsGetMediaType Lib "ksproxy.ax" ( _
    ByVal Position As Long, _
    ByVal AmMediaType As LongPtr, _
    ByVal FilterHandle As LongPtr, _
    ByVal PinFactoryId As Long) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

KsGetMediaType = ctypes.windll.LoadLibrary("ksproxy.ax").KsGetMediaType
KsGetMediaType.restype = ctypes.c_int
KsGetMediaType.argtypes = [
    ctypes.c_int,  # Position : INT
    ctypes.c_void_p,  # AmMediaType : AM_MEDIA_TYPE* out
    wintypes.HANDLE,  # FilterHandle : HANDLE
    wintypes.DWORD,  # PinFactoryId : DWORD
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('ksproxy.ax')
KsGetMediaType = Fiddle::Function.new(
  lib['KsGetMediaType'],
  [
    Fiddle::TYPE_INT,  # Position : INT
    Fiddle::TYPE_VOIDP,  # AmMediaType : AM_MEDIA_TYPE* out
    Fiddle::TYPE_VOIDP,  # FilterHandle : HANDLE
    -Fiddle::TYPE_INT,  # PinFactoryId : DWORD
  ],
  Fiddle::TYPE_INT)

#[link(name = "ksproxy.ax")]
extern "system" {
    fn KsGetMediaType(
        Position: i32,  // INT
        AmMediaType: *mut AM_MEDIA_TYPE,  // AM_MEDIA_TYPE* out
        FilterHandle: *mut core::ffi::c_void,  // HANDLE
        PinFactoryId: u32  // DWORD
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("ksproxy.ax")]
public static extern int KsGetMediaType(int Position, IntPtr AmMediaType, IntPtr FilterHandle, uint PinFactoryId);
"@
$api = Add-Type -MemberDefinition $sig -Name 'ksproxy.ax_KsGetMediaType' -Namespace Win32 -PassThru
# $api::KsGetMediaType(Position, AmMediaType, FilterHandle, PinFactoryId)

#uselib "ksproxy.ax"
#func global KsGetMediaType "KsGetMediaType" sptr, sptr, sptr, sptr
; KsGetMediaType Position, varptr(AmMediaType), FilterHandle, PinFactoryId   ; 戻り値は stat
; Position : INT -> "sptr"
; AmMediaType : AM_MEDIA_TYPE* out -> "sptr"
; FilterHandle : HANDLE -> "sptr"
; PinFactoryId : DWORD -> "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 "ksproxy.ax"
#cfunc global KsGetMediaType "KsGetMediaType" int, var, sptr, int
; res = KsGetMediaType(Position, AmMediaType, FilterHandle, PinFactoryId)
; Position : INT -> "int"
; AmMediaType : AM_MEDIA_TYPE* out -> "var"
; FilterHandle : HANDLE -> "sptr"
; PinFactoryId : DWORD -> "int"
; ※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 KsGetMediaType(INT Position, AM_MEDIA_TYPE* AmMediaType, HANDLE FilterHandle, DWORD PinFactoryId)
#uselib "ksproxy.ax"
#cfunc global KsGetMediaType "KsGetMediaType" int, var, intptr, int
; res = KsGetMediaType(Position, AmMediaType, FilterHandle, PinFactoryId)
; Position : INT -> "int"
; AmMediaType : AM_MEDIA_TYPE* out -> "var"
; FilterHandle : HANDLE -> "intptr"
; PinFactoryId : DWORD -> "int"
; ※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 (
	ksproxy_ax = windows.NewLazySystemDLL("ksproxy.ax")
	procKsGetMediaType = ksproxy_ax.NewProc("KsGetMediaType")
)

// Position (INT), AmMediaType (AM_MEDIA_TYPE* out), FilterHandle (HANDLE), PinFactoryId (DWORD)
r1, _, err := procKsGetMediaType.Call(
	uintptr(Position),
	uintptr(AmMediaType),
	uintptr(FilterHandle),
	uintptr(PinFactoryId),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function KsGetMediaType(
  Position: Integer;   // INT
  AmMediaType: Pointer;   // AM_MEDIA_TYPE* out
  FilterHandle: THandle;   // HANDLE
  PinFactoryId: DWORD   // DWORD
): Integer; stdcall;
  external 'ksproxy.ax' name 'KsGetMediaType';

result := DllCall("ksproxy.ax\KsGetMediaType"
    , "Int", Position   ; INT
    , "Ptr", AmMediaType   ; AM_MEDIA_TYPE* out
    , "Ptr", FilterHandle   ; HANDLE
    , "UInt", PinFactoryId   ; DWORD
    , "Int")   ; return: HRESULT

●KsGetMediaType(Position, AmMediaType, FilterHandle, PinFactoryId) = DLL("ksproxy.ax", "int KsGetMediaType(int, void*, void*, dword)")
# 呼び出し: KsGetMediaType(Position, AmMediaType, FilterHandle, PinFactoryId)
# Position : INT -> "int"
# AmMediaType : AM_MEDIA_TYPE* out -> "void*"
# FilterHandle : HANDLE -> "void*"
# PinFactoryId : DWORD -> "dword"
# 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)。