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MFCreateDXGICrossAdapterBuffer

関数
アダプター間で共有可能なDXGIメディアバッファーを生成する。
DLLMFPlat.dll呼出規約winapi

シグネチャ

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

HRESULT MFCreateDXGICrossAdapterBuffer(
    const GUID* riid,
    IUnknown* punkDevice,
    IMFMediaType* pMediaType,
    DWORD uSubresource,
    IMFMediaBuffer** ppBuffer
);

パラメーター

名前型方向説明
riidGUID*in対象リソースインターフェイスの識別子 GUID への参照。
punkDeviceIUnknown*inバッファを生成する DXGI デバイスを表す IUnknown ポインタ。
pMediaTypeIMFMediaType*inバッファの形式を記述する IMFMediaType ポインタ。
uSubresourceDWORDin対象とするサブリソースのインデックス。
ppBufferIMFMediaBuffer**out生成されたクロスアダプタ用 IMFMediaBuffer を受け取る出力ポインタ。

戻り値の型: HRESULT

各言語での呼び出し定義

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

HRESULT MFCreateDXGICrossAdapterBuffer(
    const GUID* riid,
    IUnknown* punkDevice,
    IMFMediaType* pMediaType,
    DWORD uSubresource,
    IMFMediaBuffer** ppBuffer
);
[DllImport("MFPlat.dll", ExactSpelling = true)]
static extern int MFCreateDXGICrossAdapterBuffer(
    ref Guid riid,   // GUID*
    IntPtr punkDevice,   // IUnknown*
    IntPtr pMediaType,   // IMFMediaType*
    uint uSubresource,   // DWORD
    IntPtr ppBuffer   // IMFMediaBuffer** out
);
<DllImport("MFPlat.dll", ExactSpelling:=True)>
Public Shared Function MFCreateDXGICrossAdapterBuffer(
    ByRef riid As Guid,   ' GUID*
    punkDevice As IntPtr,   ' IUnknown*
    pMediaType As IntPtr,   ' IMFMediaType*
    uSubresource As UInteger,   ' DWORD
    ppBuffer As IntPtr   ' IMFMediaBuffer** out
) As Integer
End Function
' riid : GUID*
' punkDevice : IUnknown*
' pMediaType : IMFMediaType*
' uSubresource : DWORD
' ppBuffer : IMFMediaBuffer** out
Declare PtrSafe Function MFCreateDXGICrossAdapterBuffer Lib "mfplat" ( _
    ByVal riid As LongPtr, _
    ByVal punkDevice As LongPtr, _
    ByVal pMediaType As LongPtr, _
    ByVal uSubresource 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

MFCreateDXGICrossAdapterBuffer = ctypes.windll.mfplat.MFCreateDXGICrossAdapterBuffer
MFCreateDXGICrossAdapterBuffer.restype = ctypes.c_int
MFCreateDXGICrossAdapterBuffer.argtypes = [
    ctypes.c_void_p,  # riid : GUID*
    ctypes.c_void_p,  # punkDevice : IUnknown*
    ctypes.c_void_p,  # pMediaType : IMFMediaType*
    wintypes.DWORD,  # uSubresource : DWORD
    ctypes.c_void_p,  # ppBuffer : IMFMediaBuffer** out
]
require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('MFPlat.dll')
MFCreateDXGICrossAdapterBuffer = Fiddle::Function.new(
  lib['MFCreateDXGICrossAdapterBuffer'],
  [
    Fiddle::TYPE_VOIDP,  # riid : GUID*
    Fiddle::TYPE_VOIDP,  # punkDevice : IUnknown*
    Fiddle::TYPE_VOIDP,  # pMediaType : IMFMediaType*
    -Fiddle::TYPE_INT,  # uSubresource : DWORD
    Fiddle::TYPE_VOIDP,  # ppBuffer : IMFMediaBuffer** out
  ],
  Fiddle::TYPE_INT)
#[link(name = "mfplat")]
extern "system" {
    fn MFCreateDXGICrossAdapterBuffer(
        riid: *const GUID,  // GUID*
        punkDevice: *mut core::ffi::c_void,  // IUnknown*
        pMediaType: *mut core::ffi::c_void,  // IMFMediaType*
        uSubresource: 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 MFCreateDXGICrossAdapterBuffer(ref Guid riid, IntPtr punkDevice, IntPtr pMediaType, uint uSubresource, IntPtr ppBuffer);
"@
$api = Add-Type -MemberDefinition $sig -Name 'MFPlat_MFCreateDXGICrossAdapterBuffer' -Namespace Win32 -PassThru
# $api::MFCreateDXGICrossAdapterBuffer(riid, punkDevice, pMediaType, uSubresource, ppBuffer)
#uselib "MFPlat.dll"
#func global MFCreateDXGICrossAdapterBuffer "MFCreateDXGICrossAdapterBuffer" sptr, sptr, sptr, sptr, sptr
; MFCreateDXGICrossAdapterBuffer varptr(riid), punkDevice, pMediaType, uSubresource, ppBuffer   ; 戻り値は stat
; riid : GUID* -> "sptr"
; punkDevice : IUnknown* -> "sptr"
; pMediaType : IMFMediaType* -> "sptr"
; uSubresource : DWORD -> "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。
出力引数: 
#uselib "MFPlat.dll"
#cfunc global MFCreateDXGICrossAdapterBuffer "MFCreateDXGICrossAdapterBuffer" var, sptr, sptr, int, sptr
; res = MFCreateDXGICrossAdapterBuffer(riid, punkDevice, pMediaType, uSubresource, ppBuffer)
; riid : GUID* -> "var"
; punkDevice : IUnknown* -> "sptr"
; pMediaType : IMFMediaType* -> "sptr"
; uSubresource : DWORD -> "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。
出力引数: 
; HRESULT MFCreateDXGICrossAdapterBuffer(GUID* riid, IUnknown* punkDevice, IMFMediaType* pMediaType, DWORD uSubresource, IMFMediaBuffer** ppBuffer)
#uselib "MFPlat.dll"
#cfunc global MFCreateDXGICrossAdapterBuffer "MFCreateDXGICrossAdapterBuffer" var, intptr, intptr, int, intptr
; res = MFCreateDXGICrossAdapterBuffer(riid, punkDevice, pMediaType, uSubresource, ppBuffer)
; riid : GUID* -> "var"
; punkDevice : IUnknown* -> "intptr"
; pMediaType : IMFMediaType* -> "intptr"
; uSubresource : DWORD -> "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")
	procMFCreateDXGICrossAdapterBuffer = mfplat.NewProc("MFCreateDXGICrossAdapterBuffer")
)

// riid (GUID*), punkDevice (IUnknown*), pMediaType (IMFMediaType*), uSubresource (DWORD), ppBuffer (IMFMediaBuffer** out)
r1, _, err := procMFCreateDXGICrossAdapterBuffer.Call(
	uintptr(riid),
	uintptr(punkDevice),
	uintptr(pMediaType),
	uintptr(uSubresource),
	uintptr(ppBuffer),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT
function MFCreateDXGICrossAdapterBuffer(
  riid: PGUID;   // GUID*
  punkDevice: Pointer;   // IUnknown*
  pMediaType: Pointer;   // IMFMediaType*
  uSubresource: DWORD;   // DWORD
  ppBuffer: Pointer   // IMFMediaBuffer** out
): Integer; stdcall;
  external 'MFPlat.dll' name 'MFCreateDXGICrossAdapterBuffer';
result := DllCall("MFPlat\MFCreateDXGICrossAdapterBuffer"
    , "Ptr", riid   ; GUID*
    , "Ptr", punkDevice   ; IUnknown*
    , "Ptr", pMediaType   ; IMFMediaType*
    , "UInt", uSubresource   ; DWORD
    , "Ptr", ppBuffer   ; IMFMediaBuffer** out
    , "Int")   ; return: HRESULT
●MFCreateDXGICrossAdapterBuffer(riid, punkDevice, pMediaType, uSubresource, ppBuffer) = DLL("MFPlat.dll", "int MFCreateDXGICrossAdapterBuffer(void*, void*, void*, dword, void*)")
# 呼び出し: MFCreateDXGICrossAdapterBuffer(riid, punkDevice, pMediaType, uSubresource, ppBuffer)
# riid : GUID* -> "void*"
# punkDevice : IUnknown* -> "void*"
# pMediaType : IMFMediaType* -> "void*"
# uSubresource : 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 MFCreateDXGICrossAdapterBuffer(
    riid: [*c]GUID, // GUID*
    punkDevice: ?*anyopaque, // IUnknown*
    pMediaType: ?*anyopaque, // IMFMediaType*
    uSubresource: u32, // DWORD
    ppBuffer: ?*anyopaque // IMFMediaBuffer** out
) callconv(std.os.windows.WINAPI) i32;
proc MFCreateDXGICrossAdapterBuffer(
    riid: ptr GUID,  # GUID*
    punkDevice: pointer,  # IUnknown*
    pMediaType: pointer,  # IMFMediaType*
    uSubresource: uint32,  # DWORD
    ppBuffer: pointer  # IMFMediaBuffer** out
): int32 {.importc: "MFCreateDXGICrossAdapterBuffer", stdcall, dynlib: "MFPlat.dll".}
pragma(lib, "mfplat");
extern(Windows)
int MFCreateDXGICrossAdapterBuffer(
    GUID* riid,   // GUID*
    void* punkDevice,   // IUnknown*
    void* pMediaType,   // IMFMediaType*
    uint uSubresource,   // DWORD
    void* ppBuffer   // IMFMediaBuffer** out
);
ccall((:MFCreateDXGICrossAdapterBuffer, "MFPlat.dll"), stdcall, Int32,
      (Ptr{GUID}, Ptr{Cvoid}, Ptr{Cvoid}, UInt32, Ptr{Cvoid}),
      riid, punkDevice, pMediaType, uSubresource, ppBuffer)
# riid : GUID* -> Ptr{GUID}
# punkDevice : IUnknown* -> Ptr{Cvoid}
# pMediaType : IMFMediaType* -> Ptr{Cvoid}
# uSubresource : 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 MFCreateDXGICrossAdapterBuffer(
    void* riid,
    void* punkDevice,
    void* pMediaType,
    uint32_t uSubresource,
    void* ppBuffer);
]]
local mfplat = ffi.load("mfplat")
-- mfplat.MFCreateDXGICrossAdapterBuffer(riid, punkDevice, pMediaType, uSubresource, ppBuffer)
-- riid : GUID*
-- punkDevice : IUnknown*
-- pMediaType : IMFMediaType*
-- uSubresource : 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 MFCreateDXGICrossAdapterBuffer = lib.func('__stdcall', 'MFCreateDXGICrossAdapterBuffer', 'int32_t', ['void *', 'void *', 'void *', 'uint32_t', 'void *']);
// MFCreateDXGICrossAdapterBuffer(riid, punkDevice, pMediaType, uSubresource, ppBuffer)
// riid : GUID* -> 'void *'
// punkDevice : IUnknown* -> 'void *'
// pMediaType : IMFMediaType* -> 'void *'
// uSubresource : 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", {
  MFCreateDXGICrossAdapterBuffer: { parameters: ["pointer", "pointer", "pointer", "u32", "pointer"], result: "i32" },
});
// lib.symbols.MFCreateDXGICrossAdapterBuffer(riid, punkDevice, pMediaType, uSubresource, ppBuffer)
// riid : GUID* -> "pointer"
// punkDevice : IUnknown* -> "pointer"
// pMediaType : IMFMediaType* -> "pointer"
// uSubresource : 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 MFCreateDXGICrossAdapterBuffer(
    void* riid,
    void* punkDevice,
    void* pMediaType,
    uint32_t uSubresource,
    void* ppBuffer);
C, "MFPlat.dll");
// $ffi->MFCreateDXGICrossAdapterBuffer(riid, punkDevice, pMediaType, uSubresource, ppBuffer);
// riid : GUID*
// punkDevice : IUnknown*
// pMediaType : IMFMediaType*
// uSubresource : 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 MFCreateDXGICrossAdapterBuffer(
        Pointer riid,   // GUID*
        Pointer punkDevice,   // IUnknown*
        Pointer pMediaType,   // IMFMediaType*
        int uSubresource,   // DWORD
        Pointer ppBuffer   // IMFMediaBuffer** out
    );
}
@[Link("mfplat")]
lib LibMFPlat
  fun MFCreateDXGICrossAdapterBuffer = MFCreateDXGICrossAdapterBuffer(
    riid : GUID*,   # GUID*
    punkDevice : Void*,   # IUnknown*
    pMediaType : Void*,   # IMFMediaType*
    uSubresource : 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 MFCreateDXGICrossAdapterBufferNative = Int32 Function(Pointer<Void>, Pointer<Void>, Pointer<Void>, Uint32, Pointer<Void>);
typedef MFCreateDXGICrossAdapterBufferDart = int Function(Pointer<Void>, Pointer<Void>, Pointer<Void>, int, Pointer<Void>);
final MFCreateDXGICrossAdapterBuffer = DynamicLibrary.open('MFPlat.dll')
    .lookupFunction<MFCreateDXGICrossAdapterBufferNative, MFCreateDXGICrossAdapterBufferDart>('MFCreateDXGICrossAdapterBuffer');
// riid : GUID* -> Pointer<Void>
// punkDevice : IUnknown* -> Pointer<Void>
// pMediaType : IMFMediaType* -> Pointer<Void>
// uSubresource : DWORD -> Uint32
// ppBuffer : IMFMediaBuffer** out -> Pointer<Void>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。
{$mode objfpc}{$H+}
function MFCreateDXGICrossAdapterBuffer(
  riid: PGUID;   // GUID*
  punkDevice: Pointer;   // IUnknown*
  pMediaType: Pointer;   // IMFMediaType*
  uSubresource: DWORD;   // DWORD
  ppBuffer: Pointer   // IMFMediaBuffer** out
): Integer; stdcall;
  external 'MFPlat.dll' name 'MFCreateDXGICrossAdapterBuffer';
import Foreign
import Foreign.C.Types
import Foreign.C.String

foreign import stdcall safe "MFCreateDXGICrossAdapterBuffer"
  c_MFCreateDXGICrossAdapterBuffer :: Ptr () -> Ptr () -> Ptr () -> Word32 -> Ptr () -> IO Int32
-- riid : GUID* -> Ptr ()
-- punkDevice : IUnknown* -> Ptr ()
-- pMediaType : IMFMediaType* -> Ptr ()
-- uSubresource : 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 mfcreatedxgicrossadapterbuffer =
  foreign "MFCreateDXGICrossAdapterBuffer"
    ((ptr void) @-> (ptr void) @-> (ptr void) @-> uint32_t @-> (ptr void) @-> returning int32_t)
(* riid : GUID* -> (ptr void) *)
(* punkDevice : IUnknown* -> (ptr void) *)
(* pMediaType : IMFMediaType* -> (ptr void) *)
(* uSubresource : 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 ("MFCreateDXGICrossAdapterBuffer" mfcreate-dxgicross-adapter-buffer :convention :stdcall) :int32
  (riid :pointer)   ; GUID*
  (punk-device :pointer)   ; IUnknown*
  (p-media-type :pointer)   ; IMFMediaType*
  (u-subresource :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 $MFCreateDXGICrossAdapterBuffer = Win32::API::More->new('MFPlat',
    'int MFCreateDXGICrossAdapterBuffer(LPVOID riid, LPVOID punkDevice, LPVOID pMediaType, DWORD uSubresource, LPVOID ppBuffer)');
# my $ret = $MFCreateDXGICrossAdapterBuffer->Call($riid, $punkDevice, $pMediaType, $uSubresource, $ppBuffer);
# riid : GUID* -> LPVOID
# punkDevice : IUnknown* -> LPVOID
# pMediaType : IMFMediaType* -> LPVOID
# uSubresource : 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。

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