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DMUS_WAVE

構造体
サイズx64: 32 バイト / x86: 32 バイト

サイズ=各フィールドのバイト数(x64/x86 で異なる場合は x64/x86 と併記)。x64/x86 列=フィールドのバイトオフセット(HSPで dupptr / lpoke / wpoke 等に使用)。

フィールド

フィールド型サイズx64x86説明
ulFirstExtCkIdxDWORD4+0+0このウェーブに付随する拡張チャンクリストの先頭インデックス。なければ0。
ulCopyrightIdxDWORD4+4+4著作権情報チャンクの配列インデックス。なければ0。
ulWaveDataIdxDWORD4+8+8波形データチャンク(DMUS_WAVEDATA)の配列インデックス。
WaveformatExWAVEFORMATEX18+12+12波形フォーマット記述子。サンプルレート・ビット深度・チャンネル数などを保持する。

各言語での定義

#include <windows.h>

// WAVEFORMATEX  (x64 18 / x86 18 バイト)
#pragma pack(push, 1)
typedef struct WAVEFORMATEX {
    WORD wFormatTag;
    WORD nChannels;
    DWORD nSamplesPerSec;
    DWORD nAvgBytesPerSec;
    WORD nBlockAlign;
    WORD wBitsPerSample;
    WORD cbSize;
} WAVEFORMATEX;
#pragma pack(pop)

// DMUS_WAVE  (x64 32 / x86 32 バイト)
typedef struct DMUS_WAVE {
    DWORD ulFirstExtCkIdx;
    DWORD ulCopyrightIdx;
    DWORD ulWaveDataIdx;
    WAVEFORMATEX WaveformatEx;
} DMUS_WAVE;
using System;
using System.Runtime.InteropServices;

[StructLayout(LayoutKind.Sequential, Pack = 1, CharSet = CharSet.Unicode)]
public struct WAVEFORMATEX
{
    public ushort wFormatTag;
    public ushort nChannels;
    public uint nSamplesPerSec;
    public uint nAvgBytesPerSec;
    public ushort nBlockAlign;
    public ushort wBitsPerSample;
    public ushort cbSize;
}

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
public struct DMUS_WAVE
{
    public uint ulFirstExtCkIdx;
    public uint ulCopyrightIdx;
    public uint ulWaveDataIdx;
    public WAVEFORMATEX WaveformatEx;
}
Imports System.Runtime.InteropServices

<StructLayout(LayoutKind.Sequential, Pack:=1, CharSet:=CharSet.Unicode)>
Public Structure WAVEFORMATEX
    Public wFormatTag As UShort
    Public nChannels As UShort
    Public nSamplesPerSec As UInteger
    Public nAvgBytesPerSec As UInteger
    Public nBlockAlign As UShort
    Public wBitsPerSample As UShort
    Public cbSize As UShort
End Structure

<StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Unicode)>
Public Structure DMUS_WAVE
    Public ulFirstExtCkIdx As UInteger
    Public ulCopyrightIdx As UInteger
    Public ulWaveDataIdx As UInteger
    Public WaveformatEx As WAVEFORMATEX
End Structure
import ctypes
from ctypes import wintypes

class WAVEFORMATEX(ctypes.Structure):
    _pack_ = 1
    _fields_ = [
        ("wFormatTag", ctypes.c_ushort),
        ("nChannels", ctypes.c_ushort),
        ("nSamplesPerSec", wintypes.DWORD),
        ("nAvgBytesPerSec", wintypes.DWORD),
        ("nBlockAlign", ctypes.c_ushort),
        ("wBitsPerSample", ctypes.c_ushort),
        ("cbSize", ctypes.c_ushort),
    ]

class DMUS_WAVE(ctypes.Structure):
    _fields_ = [
        ("ulFirstExtCkIdx", wintypes.DWORD),
        ("ulCopyrightIdx", wintypes.DWORD),
        ("ulWaveDataIdx", wintypes.DWORD),
        ("WaveformatEx", WAVEFORMATEX),
    ]
#[repr(C, packed(1))]
pub struct WAVEFORMATEX {
    pub wFormatTag: u16,
    pub nChannels: u16,
    pub nSamplesPerSec: u32,
    pub nAvgBytesPerSec: u32,
    pub nBlockAlign: u16,
    pub wBitsPerSample: u16,
    pub cbSize: u16,
}

#[repr(C)]
pub struct DMUS_WAVE {
    pub ulFirstExtCkIdx: u32,
    pub ulCopyrightIdx: u32,
    pub ulWaveDataIdx: u32,
    pub WaveformatEx: WAVEFORMATEX,
}
import "golang.org/x/sys/windows"

type WAVEFORMATEX struct {
	wFormatTag uint16
	nChannels uint16
	nSamplesPerSec uint32
	nAvgBytesPerSec uint32
	nBlockAlign uint16
	wBitsPerSample uint16
	cbSize uint16
}

type DMUS_WAVE struct {
	ulFirstExtCkIdx uint32
	ulCopyrightIdx uint32
	ulWaveDataIdx uint32
	WaveformatEx WAVEFORMATEX
}
type
  WAVEFORMATEX = packed record
    wFormatTag: Word;
    nChannels: Word;
    nSamplesPerSec: DWORD;
    nAvgBytesPerSec: DWORD;
    nBlockAlign: Word;
    wBitsPerSample: Word;
    cbSize: Word;
  end;

  DMUS_WAVE = record
    ulFirstExtCkIdx: DWORD;
    ulCopyrightIdx: DWORD;
    ulWaveDataIdx: DWORD;
    WaveformatEx: WAVEFORMATEX;
  end;
const WAVEFORMATEX = extern struct {
    wFormatTag: u16,
    nChannels: u16,
    nSamplesPerSec: u32,
    nAvgBytesPerSec: u32,
    nBlockAlign: u16,
    wBitsPerSample: u16,
    cbSize: u16,
};

const DMUS_WAVE = extern struct {
    ulFirstExtCkIdx: u32,
    ulCopyrightIdx: u32,
    ulWaveDataIdx: u32,
    WaveformatEx: WAVEFORMATEX,
};
type
  WAVEFORMATEX {.packed.} = object
    wFormatTag: uint16
    nChannels: uint16
    nSamplesPerSec: uint32
    nAvgBytesPerSec: uint32
    nBlockAlign: uint16
    wBitsPerSample: uint16
    cbSize: uint16

  DMUS_WAVE {.bycopy.} = object
    ulFirstExtCkIdx: uint32
    ulCopyrightIdx: uint32
    ulWaveDataIdx: uint32
    WaveformatEx: WAVEFORMATEX
align(1)
struct WAVEFORMATEX
{
    ushort wFormatTag;
    ushort nChannels;
    uint nSamplesPerSec;
    uint nAvgBytesPerSec;
    ushort nBlockAlign;
    ushort wBitsPerSample;
    ushort cbSize;
}

struct DMUS_WAVE
{
    uint ulFirstExtCkIdx;
    uint ulCopyrightIdx;
    uint ulWaveDataIdx;
    WAVEFORMATEX WaveformatEx;
}

HSP用 定義

HSP3.7/3.8 は構造体機能が無いため4byte整数配列(dim)+peek/poke で操作(32/64bitでサイズ・位置が異なる場合はタブで分割)。IronHSP は NSTRUCT(#defstruct/stdim/->)で32/64bit共通。

; HSP3.7/3.8 は構造体機能が無いため、4byte整数の配列変数で操作します。(x64 レイアウト)
; DMUS_WAVE サイズ: 32 バイト(x64)
dim st, 8    ; 4byte整数×8(構造体サイズ 32 / 4 切り上げ)
; ulFirstExtCkIdx : DWORD (+0, 4byte)  st.0 = 値  /  値 = st.0   (lpoke/lpeek も可)
; ulCopyrightIdx : DWORD (+4, 4byte)  st.1 = 値  /  値 = st.1   (lpoke/lpeek も可)
; ulWaveDataIdx : DWORD (+8, 4byte)  st.2 = 値  /  値 = st.2   (lpoke/lpeek も可)
; WaveformatEx : WAVEFORMATEX (+12, 18byte)  varptr(st)+12 を基点に操作(18byte:入れ子/配列)
; ※4byte境界の整数は添字 st.N(N=オフセット/4)で読み書き可。それ以外は peek/poke 系を使用。
; IronHSP は NSTRUCT(構造体)をサポート。32bit/64bit どちらでも同じコードで動作します。
; ※GUID・入れ子構造体はデフォルト型でないため、依存する #defstruct を先に定義(下記に同梱)。
#defstruct global WAVEFORMATEX, pack=1
    #field short wFormatTag
    #field short nChannels
    #field int nSamplesPerSec
    #field int nAvgBytesPerSec
    #field short nBlockAlign
    #field short wBitsPerSample
    #field short cbSize
#endstruct

#defstruct global DMUS_WAVE
    #field int ulFirstExtCkIdx
    #field int ulCopyrightIdx
    #field int ulWaveDataIdx
    #field WAVEFORMATEX WaveformatEx
#endstruct

stdim st, DMUS_WAVE        ; NSTRUCT 変数を確保
st->ulFirstExtCkIdx = 100
mes "ulFirstExtCkIdx=" + st->ulFirstExtCkIdx