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WinUsb_ReadIsochPipe

関数

指定フレームからアイソクロナスパイプを読み取る。

DLLWINUSB.dll呼出規約winapiSetLastErrorあり対応OSWindows 8.1 以降

シグネチャ

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

BOOL WinUsb_ReadIsochPipe(
    void* BufferHandle,
    DWORD Offset,
    DWORD Length,
    DWORD* FrameNumber,
    DWORD NumberOfPackets,
    USBD_ISO_PACKET_DESCRIPTOR* IsoPacketDescriptors,
    OVERLAPPED* Overlapped   // optional
);

パラメーター

名前	型	方向	説明
BufferHandle	void*	in	登録済みのアイソクロナスバッファハンドル。
Offset	DWORD	in	読み取り開始位置のバッファ先頭からのバイトオフセット。
Length	DWORD	in	読み取るバイト数。
FrameNumber	DWORD*	inout	転送を開始するUSBフレーム番号を指定/受け取るポインタ。
NumberOfPackets	DWORD	in	読み取りに用いるアイソクロナスパケット数。
IsoPacketDescriptors	USBD_ISO_PACKET_DESCRIPTOR*	out	各パケットの結果を受け取るUSBD_ISO_PACKET_DESCRIPTOR配列へのポインタ。
Overlapped	OVERLAPPED*	inoptional	非同期I/O用のOVERLAPPED構造体へのポインタ。

戻り値の型: BOOL

各言語での呼び出し定義

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

BOOL WinUsb_ReadIsochPipe(
    void* BufferHandle,
    DWORD Offset,
    DWORD Length,
    DWORD* FrameNumber,
    DWORD NumberOfPackets,
    USBD_ISO_PACKET_DESCRIPTOR* IsoPacketDescriptors,
    OVERLAPPED* Overlapped   // optional
);

[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("WINUSB.dll", SetLastError = true, ExactSpelling = true)]
static extern bool WinUsb_ReadIsochPipe(
    IntPtr BufferHandle,   // void*
    uint Offset,   // DWORD
    uint Length,   // DWORD
    ref uint FrameNumber,   // DWORD* in/out
    uint NumberOfPackets,   // DWORD
    IntPtr IsoPacketDescriptors,   // USBD_ISO_PACKET_DESCRIPTOR* out
    IntPtr Overlapped   // OVERLAPPED* optional
);

<DllImport("WINUSB.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function WinUsb_ReadIsochPipe(
    BufferHandle As IntPtr,   ' void*
    Offset As UInteger,   ' DWORD
    Length As UInteger,   ' DWORD
    ByRef FrameNumber As UInteger,   ' DWORD* in/out
    NumberOfPackets As UInteger,   ' DWORD
    IsoPacketDescriptors As IntPtr,   ' USBD_ISO_PACKET_DESCRIPTOR* out
    Overlapped As IntPtr   ' OVERLAPPED* optional
) As <MarshalAs(UnmanagedType.Bool)> Boolean
End Function

' BufferHandle : void*
' Offset : DWORD
' Length : DWORD
' FrameNumber : DWORD* in/out
' NumberOfPackets : DWORD
' IsoPacketDescriptors : USBD_ISO_PACKET_DESCRIPTOR* out
' Overlapped : OVERLAPPED* optional
Declare PtrSafe Function WinUsb_ReadIsochPipe Lib "winusb" ( _
    ByVal BufferHandle As LongPtr, _
    ByVal Offset As Long, _
    ByVal Length As Long, _
    ByRef FrameNumber As Long, _
    ByVal NumberOfPackets As Long, _
    ByVal IsoPacketDescriptors As LongPtr, _
    ByVal Overlapped 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

WinUsb_ReadIsochPipe = ctypes.windll.winusb.WinUsb_ReadIsochPipe
WinUsb_ReadIsochPipe.restype = wintypes.BOOL
WinUsb_ReadIsochPipe.argtypes = [
    ctypes.POINTER(None),  # BufferHandle : void*
    wintypes.DWORD,  # Offset : DWORD
    wintypes.DWORD,  # Length : DWORD
    ctypes.POINTER(wintypes.DWORD),  # FrameNumber : DWORD* in/out
    wintypes.DWORD,  # NumberOfPackets : DWORD
    ctypes.c_void_p,  # IsoPacketDescriptors : USBD_ISO_PACKET_DESCRIPTOR* out
    ctypes.c_void_p,  # Overlapped : OVERLAPPED* optional
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('WINUSB.dll')
WinUsb_ReadIsochPipe = Fiddle::Function.new(
  lib['WinUsb_ReadIsochPipe'],
  [
    Fiddle::TYPE_VOIDP,  # BufferHandle : void*
    -Fiddle::TYPE_INT,  # Offset : DWORD
    -Fiddle::TYPE_INT,  # Length : DWORD
    Fiddle::TYPE_VOIDP,  # FrameNumber : DWORD* in/out
    -Fiddle::TYPE_INT,  # NumberOfPackets : DWORD
    Fiddle::TYPE_VOIDP,  # IsoPacketDescriptors : USBD_ISO_PACKET_DESCRIPTOR* out
    Fiddle::TYPE_VOIDP,  # Overlapped : OVERLAPPED* optional
  ],
  Fiddle::TYPE_INT)

#[link(name = "winusb")]
extern "system" {
    fn WinUsb_ReadIsochPipe(
        BufferHandle: *mut (),  // void*
        Offset: u32,  // DWORD
        Length: u32,  // DWORD
        FrameNumber: *mut u32,  // DWORD* in/out
        NumberOfPackets: u32,  // DWORD
        IsoPacketDescriptors: *mut USBD_ISO_PACKET_DESCRIPTOR,  // USBD_ISO_PACKET_DESCRIPTOR* out
        Overlapped: *mut OVERLAPPED  // OVERLAPPED* optional
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("WINUSB.dll", SetLastError = true)]
public static extern bool WinUsb_ReadIsochPipe(IntPtr BufferHandle, uint Offset, uint Length, ref uint FrameNumber, uint NumberOfPackets, IntPtr IsoPacketDescriptors, IntPtr Overlapped);
"@
$api = Add-Type -MemberDefinition $sig -Name 'WINUSB_WinUsb_ReadIsochPipe' -Namespace Win32 -PassThru
# $api::WinUsb_ReadIsochPipe(BufferHandle, Offset, Length, FrameNumber, NumberOfPackets, IsoPacketDescriptors, Overlapped)

#uselib "WINUSB.dll"
#func global WinUsb_ReadIsochPipe "WinUsb_ReadIsochPipe" sptr, sptr, sptr, sptr, sptr, sptr, sptr
; WinUsb_ReadIsochPipe BufferHandle, Offset, Length, varptr(FrameNumber), NumberOfPackets, varptr(IsoPacketDescriptors), varptr(Overlapped)   ; 戻り値は stat
; BufferHandle : void* -> "sptr"
; Offset : DWORD -> "sptr"
; Length : DWORD -> "sptr"
; FrameNumber : DWORD* in/out -> "sptr"
; NumberOfPackets : DWORD -> "sptr"
; IsoPacketDescriptors : USBD_ISO_PACKET_DESCRIPTOR* out -> "sptr"
; Overlapped : OVERLAPPED* optional -> "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 "WINUSB.dll"
#cfunc global WinUsb_ReadIsochPipe "WinUsb_ReadIsochPipe" sptr, int, int, var, int, var, var
; res = WinUsb_ReadIsochPipe(BufferHandle, Offset, Length, FrameNumber, NumberOfPackets, IsoPacketDescriptors, Overlapped)
; BufferHandle : void* -> "sptr"
; Offset : DWORD -> "int"
; Length : DWORD -> "int"
; FrameNumber : DWORD* in/out -> "var"
; NumberOfPackets : DWORD -> "int"
; IsoPacketDescriptors : USBD_ISO_PACKET_DESCRIPTOR* out -> "var"
; Overlapped : OVERLAPPED* optional -> "var"
; ※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。#uselib "WINUSB.dll"
#cfunc global WinUsb_ReadIsochPipe "WinUsb_ReadIsochPipe" sptr, int, int, sptr, int, sptr, sptr
; res = WinUsb_ReadIsochPipe(BufferHandle, Offset, Length, varptr(FrameNumber), NumberOfPackets, varptr(IsoPacketDescriptors), varptr(Overlapped))
; BufferHandle : void* -> "sptr"
; Offset : DWORD -> "int"
; Length : DWORD -> "int"
; FrameNumber : DWORD* in/out -> "sptr"
; NumberOfPackets : DWORD -> "int"
; IsoPacketDescriptors : USBD_ISO_PACKET_DESCRIPTOR* out -> "sptr"
; Overlapped : OVERLAPPED* optional -> "sptr"
; ※出力/バッファ引数はポインタ方式(token=sptr / 呼び出しは varptr(変数))。

出力引数:

; BOOL WinUsb_ReadIsochPipe(void* BufferHandle, DWORD Offset, DWORD Length, DWORD* FrameNumber, DWORD NumberOfPackets, USBD_ISO_PACKET_DESCRIPTOR* IsoPacketDescriptors, OVERLAPPED* Overlapped)
#uselib "WINUSB.dll"
#cfunc global WinUsb_ReadIsochPipe "WinUsb_ReadIsochPipe" intptr, int, int, var, int, var, var
; res = WinUsb_ReadIsochPipe(BufferHandle, Offset, Length, FrameNumber, NumberOfPackets, IsoPacketDescriptors, Overlapped)
; BufferHandle : void* -> "intptr"
; Offset : DWORD -> "int"
; Length : DWORD -> "int"
; FrameNumber : DWORD* in/out -> "var"
; NumberOfPackets : DWORD -> "int"
; IsoPacketDescriptors : USBD_ISO_PACKET_DESCRIPTOR* out -> "var"
; Overlapped : OVERLAPPED* optional -> "var"
; ※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。; BOOL WinUsb_ReadIsochPipe(void* BufferHandle, DWORD Offset, DWORD Length, DWORD* FrameNumber, DWORD NumberOfPackets, USBD_ISO_PACKET_DESCRIPTOR* IsoPacketDescriptors, OVERLAPPED* Overlapped)
#uselib "WINUSB.dll"
#cfunc global WinUsb_ReadIsochPipe "WinUsb_ReadIsochPipe" intptr, int, int, intptr, int, intptr, intptr
; res = WinUsb_ReadIsochPipe(BufferHandle, Offset, Length, varptr(FrameNumber), NumberOfPackets, varptr(IsoPacketDescriptors), varptr(Overlapped))
; BufferHandle : void* -> "intptr"
; Offset : DWORD -> "int"
; Length : DWORD -> "int"
; FrameNumber : DWORD* in/out -> "intptr"
; NumberOfPackets : DWORD -> "int"
; IsoPacketDescriptors : USBD_ISO_PACKET_DESCRIPTOR* out -> "intptr"
; Overlapped : OVERLAPPED* optional -> "intptr"
; ※出力/バッファ引数はポインタ方式(token=intptr / 呼び出しは varptr(変数))。

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

var (
	winusb = windows.NewLazySystemDLL("WINUSB.dll")
	procWinUsb_ReadIsochPipe = winusb.NewProc("WinUsb_ReadIsochPipe")
)

// BufferHandle (void*), Offset (DWORD), Length (DWORD), FrameNumber (DWORD* in/out), NumberOfPackets (DWORD), IsoPacketDescriptors (USBD_ISO_PACKET_DESCRIPTOR* out), Overlapped (OVERLAPPED* optional)
r1, _, err := procWinUsb_ReadIsochPipe.Call(
	uintptr(BufferHandle),
	uintptr(Offset),
	uintptr(Length),
	uintptr(FrameNumber),
	uintptr(NumberOfPackets),
	uintptr(IsoPacketDescriptors),
	uintptr(Overlapped),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function WinUsb_ReadIsochPipe(
  BufferHandle: Pointer;   // void*
  Offset: DWORD;   // DWORD
  Length: DWORD;   // DWORD
  FrameNumber: Pointer;   // DWORD* in/out
  NumberOfPackets: DWORD;   // DWORD
  IsoPacketDescriptors: Pointer;   // USBD_ISO_PACKET_DESCRIPTOR* out
  Overlapped: Pointer   // OVERLAPPED* optional
): BOOL; stdcall;
  external 'WINUSB.dll' name 'WinUsb_ReadIsochPipe';

result := DllCall("WINUSB\WinUsb_ReadIsochPipe"
    , "Ptr", BufferHandle   ; void*
    , "UInt", Offset   ; DWORD
    , "UInt", Length   ; DWORD
    , "Ptr", FrameNumber   ; DWORD* in/out
    , "UInt", NumberOfPackets   ; DWORD
    , "Ptr", IsoPacketDescriptors   ; USBD_ISO_PACKET_DESCRIPTOR* out
    , "Ptr", Overlapped   ; OVERLAPPED* optional
    , "Int")   ; return: BOOL

●WinUsb_ReadIsochPipe(BufferHandle, Offset, Length, FrameNumber, NumberOfPackets, IsoPacketDescriptors, Overlapped) = DLL("WINUSB.dll", "bool WinUsb_ReadIsochPipe(void*, dword, dword, void*, dword, void*, void*)")
# 呼び出し: WinUsb_ReadIsochPipe(BufferHandle, Offset, Length, FrameNumber, NumberOfPackets, IsoPacketDescriptors, Overlapped)
# BufferHandle : void* -> "void*"
# Offset : DWORD -> "dword"
# Length : DWORD -> "dword"
# FrameNumber : DWORD* in/out -> "void*"
# NumberOfPackets : DWORD -> "dword"
# IsoPacketDescriptors : USBD_ISO_PACKET_DESCRIPTOR* out -> "void*"
# Overlapped : OVERLAPPED* optional -> "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 "winusb" fn WinUsb_ReadIsochPipe(
    BufferHandle: ?*anyopaque, // void*
    Offset: u32, // DWORD
    Length: u32, // DWORD
    FrameNumber: [*c]u32, // DWORD* in/out
    NumberOfPackets: u32, // DWORD
    IsoPacketDescriptors: [*c]USBD_ISO_PACKET_DESCRIPTOR, // USBD_ISO_PACKET_DESCRIPTOR* out
    Overlapped: [*c]OVERLAPPED // OVERLAPPED* optional
) callconv(std.os.windows.WINAPI) i32;

proc WinUsb_ReadIsochPipe(
    BufferHandle: pointer,  # void*
    Offset: uint32,  # DWORD
    Length: uint32,  # DWORD
    FrameNumber: ptr uint32,  # DWORD* in/out
    NumberOfPackets: uint32,  # DWORD
    IsoPacketDescriptors: ptr USBD_ISO_PACKET_DESCRIPTOR,  # USBD_ISO_PACKET_DESCRIPTOR* out
    Overlapped: ptr OVERLAPPED  # OVERLAPPED* optional
): int32 {.importc: "WinUsb_ReadIsochPipe", stdcall, dynlib: "WINUSB.dll".}

pragma(lib, "winusb");
extern(Windows)
int WinUsb_ReadIsochPipe(
    void* BufferHandle,   // void*
    uint Offset,   // DWORD
    uint Length,   // DWORD
    uint* FrameNumber,   // DWORD* in/out
    uint NumberOfPackets,   // DWORD
    USBD_ISO_PACKET_DESCRIPTOR* IsoPacketDescriptors,   // USBD_ISO_PACKET_DESCRIPTOR* out
    OVERLAPPED* Overlapped   // OVERLAPPED* optional
);

ccall((:WinUsb_ReadIsochPipe, "WINUSB.dll"), stdcall, Int32,
      (Ptr{Cvoid}, UInt32, UInt32, Ptr{UInt32}, UInt32, Ptr{USBD_ISO_PACKET_DESCRIPTOR}, Ptr{OVERLAPPED}),
      BufferHandle, Offset, Length, FrameNumber, NumberOfPackets, IsoPacketDescriptors, Overlapped)
# BufferHandle : void* -> Ptr{Cvoid}
# Offset : DWORD -> UInt32
# Length : DWORD -> UInt32
# FrameNumber : DWORD* in/out -> Ptr{UInt32}
# NumberOfPackets : DWORD -> UInt32
# IsoPacketDescriptors : USBD_ISO_PACKET_DESCRIPTOR* out -> Ptr{USBD_ISO_PACKET_DESCRIPTOR}
# Overlapped : OVERLAPPED* optional -> Ptr{OVERLAPPED}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
int32_t WinUsb_ReadIsochPipe(
    void* BufferHandle,
    uint32_t Offset,
    uint32_t Length,
    uint32_t* FrameNumber,
    uint32_t NumberOfPackets,
    void* IsoPacketDescriptors,
    void* Overlapped);
]]
local winusb = ffi.load("winusb")
-- winusb.WinUsb_ReadIsochPipe(BufferHandle, Offset, Length, FrameNumber, NumberOfPackets, IsoPacketDescriptors, Overlapped)
-- BufferHandle : void*
-- Offset : DWORD
-- Length : DWORD
-- FrameNumber : DWORD* in/out
-- NumberOfPackets : DWORD
-- IsoPacketDescriptors : USBD_ISO_PACKET_DESCRIPTOR* out
-- Overlapped : OVERLAPPED* optional
-- 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('WINUSB.dll');
const WinUsb_ReadIsochPipe = lib.func('__stdcall', 'WinUsb_ReadIsochPipe', 'int32_t', ['void *', 'uint32_t', 'uint32_t', 'uint32_t *', 'uint32_t', 'void *', 'void *']);
// WinUsb_ReadIsochPipe(BufferHandle, Offset, Length, FrameNumber, NumberOfPackets, IsoPacketDescriptors, Overlapped)
// BufferHandle : void* -> 'void *'
// Offset : DWORD -> 'uint32_t'
// Length : DWORD -> 'uint32_t'
// FrameNumber : DWORD* in/out -> 'uint32_t *'
// NumberOfPackets : DWORD -> 'uint32_t'
// IsoPacketDescriptors : USBD_ISO_PACKET_DESCRIPTOR* out -> 'void *'
// Overlapped : OVERLAPPED* optional -> '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("WINUSB.dll", {
  WinUsb_ReadIsochPipe: { parameters: ["pointer", "u32", "u32", "pointer", "u32", "pointer", "pointer"], result: "i32" },
});
// lib.symbols.WinUsb_ReadIsochPipe(BufferHandle, Offset, Length, FrameNumber, NumberOfPackets, IsoPacketDescriptors, Overlapped)
// BufferHandle : void* -> "pointer"
// Offset : DWORD -> "u32"
// Length : DWORD -> "u32"
// FrameNumber : DWORD* in/out -> "pointer"
// NumberOfPackets : DWORD -> "u32"
// IsoPacketDescriptors : USBD_ISO_PACKET_DESCRIPTOR* out -> "pointer"
// Overlapped : OVERLAPPED* optional -> "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 WinUsb_ReadIsochPipe(
    void* BufferHandle,
    uint32_t Offset,
    uint32_t Length,
    uint32_t* FrameNumber,
    uint32_t NumberOfPackets,
    void* IsoPacketDescriptors,
    void* Overlapped);
C, "WINUSB.dll");
// $ffi->WinUsb_ReadIsochPipe(BufferHandle, Offset, Length, FrameNumber, NumberOfPackets, IsoPacketDescriptors, Overlapped);
// BufferHandle : void*
// Offset : DWORD
// Length : DWORD
// FrameNumber : DWORD* in/out
// NumberOfPackets : DWORD
// IsoPacketDescriptors : USBD_ISO_PACKET_DESCRIPTOR* out
// Overlapped : OVERLAPPED* optional
// 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 Winusb extends StdCallLibrary {
    Winusb INSTANCE = Native.load("winusb", Winusb.class);
    boolean WinUsb_ReadIsochPipe(
        Pointer BufferHandle,   // void*
        int Offset,   // DWORD
        int Length,   // DWORD
        IntByReference FrameNumber,   // DWORD* in/out
        int NumberOfPackets,   // DWORD
        Pointer IsoPacketDescriptors,   // USBD_ISO_PACKET_DESCRIPTOR* out
        Pointer Overlapped   // OVERLAPPED* optional
    );
}

@[Link("winusb")]
lib LibWINUSB
  fun WinUsb_ReadIsochPipe = WinUsb_ReadIsochPipe(
    BufferHandle : Void*,   # void*
    Offset : UInt32,   # DWORD
    Length : UInt32,   # DWORD
    FrameNumber : UInt32*,   # DWORD* in/out
    NumberOfPackets : UInt32,   # DWORD
    IsoPacketDescriptors : USBD_ISO_PACKET_DESCRIPTOR*,   # USBD_ISO_PACKET_DESCRIPTOR* out
    Overlapped : OVERLAPPED*   # OVERLAPPED* optional
  ) : 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 WinUsb_ReadIsochPipeNative = Int32 Function(Pointer<Void>, Uint32, Uint32, Pointer<Uint32>, Uint32, Pointer<Void>, Pointer<Void>);
typedef WinUsb_ReadIsochPipeDart = int Function(Pointer<Void>, int, int, Pointer<Uint32>, int, Pointer<Void>, Pointer<Void>);
final WinUsb_ReadIsochPipe = DynamicLibrary.open('WINUSB.dll')
    .lookupFunction<WinUsb_ReadIsochPipeNative, WinUsb_ReadIsochPipeDart>('WinUsb_ReadIsochPipe');
// BufferHandle : void* -> Pointer<Void>
// Offset : DWORD -> Uint32
// Length : DWORD -> Uint32
// FrameNumber : DWORD* in/out -> Pointer<Uint32>
// NumberOfPackets : DWORD -> Uint32
// IsoPacketDescriptors : USBD_ISO_PACKET_DESCRIPTOR* out -> Pointer<Void>
// Overlapped : OVERLAPPED* optional -> Pointer<Void>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function WinUsb_ReadIsochPipe(
  BufferHandle: Pointer;   // void*
  Offset: DWORD;   // DWORD
  Length: DWORD;   // DWORD
  FrameNumber: Pointer;   // DWORD* in/out
  NumberOfPackets: DWORD;   // DWORD
  IsoPacketDescriptors: Pointer;   // USBD_ISO_PACKET_DESCRIPTOR* out
  Overlapped: Pointer   // OVERLAPPED* optional
): BOOL; stdcall;
  external 'WINUSB.dll' name 'WinUsb_ReadIsochPipe';

import Foreign
import Foreign.C.Types
import Foreign.C.String

foreign import stdcall safe "WinUsb_ReadIsochPipe"
  c_WinUsb_ReadIsochPipe :: Ptr () -> Word32 -> Word32 -> Ptr Word32 -> Word32 -> Ptr () -> Ptr () -> IO CInt
-- BufferHandle : void* -> Ptr ()
-- Offset : DWORD -> Word32
-- Length : DWORD -> Word32
-- FrameNumber : DWORD* in/out -> Ptr Word32
-- NumberOfPackets : DWORD -> Word32
-- IsoPacketDescriptors : USBD_ISO_PACKET_DESCRIPTOR* out -> Ptr ()
-- Overlapped : OVERLAPPED* optional -> 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 winusb_readisochpipe =
  foreign "WinUsb_ReadIsochPipe"
    ((ptr void) @-> uint32_t @-> uint32_t @-> (ptr uint32_t) @-> uint32_t @-> (ptr void) @-> (ptr void) @-> returning int32_t)
(* BufferHandle : void* -> (ptr void) *)
(* Offset : DWORD -> uint32_t *)
(* Length : DWORD -> uint32_t *)
(* FrameNumber : DWORD* in/out -> (ptr uint32_t) *)
(* NumberOfPackets : DWORD -> uint32_t *)
(* IsoPacketDescriptors : USBD_ISO_PACKET_DESCRIPTOR* out -> (ptr void) *)
(* Overlapped : OVERLAPPED* optional -> (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 winusb (t "WINUSB.dll"))
(cffi:use-foreign-library winusb)

(cffi:defcfun ("WinUsb_ReadIsochPipe" win-usb-read-isoch-pipe :convention :stdcall) :int32
  (buffer-handle :pointer)   ; void*
  (offset :uint32)   ; DWORD
  (length :uint32)   ; DWORD
  (frame-number :pointer)   ; DWORD* in/out
  (number-of-packets :uint32)   ; DWORD
  (iso-packet-descriptors :pointer)   ; USBD_ISO_PACKET_DESCRIPTOR* out
  (overlapped :pointer))   ; OVERLAPPED* optional
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $WinUsb_ReadIsochPipe = Win32::API::More->new('WINUSB',
    'BOOL WinUsb_ReadIsochPipe(LPVOID BufferHandle, DWORD Offset, DWORD Length, LPVOID FrameNumber, DWORD NumberOfPackets, LPVOID IsoPacketDescriptors, LPVOID Overlapped)');
# my $ret = $WinUsb_ReadIsochPipe->Call($BufferHandle, $Offset, $Length, $FrameNumber, $NumberOfPackets, $IsoPacketDescriptors, $Overlapped);
# BufferHandle : void* -> LPVOID
# Offset : DWORD -> DWORD
# Length : DWORD -> DWORD
# FrameNumber : DWORD* in/out -> LPVOID
# NumberOfPackets : DWORD -> DWORD
# IsoPacketDescriptors : USBD_ISO_PACKET_DESCRIPTOR* out -> LPVOID
# Overlapped : OVERLAPPED* optional -> LPVOID
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。

WinUsb_ReadIsochPipe

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