PCMWAVEFORMAT

構造体

サイズx64: 16 バイト / x86: 16 バイトパッキング1

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	x64	x86	説明
wf	WAVEFORMAT	14	+0	+0	基本波形フォーマット情報(WAVEFORMAT)。
wBitsPerSample	WORD	2	+14	+14	1サンプルあたりのビット数(8/16等)。

各言語での定義

#include <windows.h>

// WAVEFORMAT  (x64 14 / x86 14 バイト)
#pragma pack(push, 1)
typedef struct WAVEFORMAT {
    WORD wFormatTag;
    WORD nChannels;
    DWORD nSamplesPerSec;
    DWORD nAvgBytesPerSec;
    WORD nBlockAlign;
} WAVEFORMAT;
#pragma pack(pop)

// PCMWAVEFORMAT  (x64 16 / x86 16 バイト)
#pragma pack(push, 1)
typedef struct PCMWAVEFORMAT {
    WAVEFORMAT wf;
    WORD wBitsPerSample;
} PCMWAVEFORMAT;
#pragma pack(pop)

using System;
using System.Runtime.InteropServices;

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

[StructLayout(LayoutKind.Sequential, Pack = 1, CharSet = CharSet.Unicode)]
public struct PCMWAVEFORMAT
{
    public WAVEFORMAT wf;
    public ushort wBitsPerSample;
}

Imports System.Runtime.InteropServices

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

<StructLayout(LayoutKind.Sequential, Pack:=1, CharSet:=CharSet.Unicode)>
Public Structure PCMWAVEFORMAT
    Public wf As WAVEFORMAT
    Public wBitsPerSample As UShort
End Structure

import ctypes
from ctypes import wintypes

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

class PCMWAVEFORMAT(ctypes.Structure):
    _pack_ = 1
    _fields_ = [
        ("wf", WAVEFORMAT),
        ("wBitsPerSample", ctypes.c_ushort),
    ]

#[repr(C, packed(1))]
pub struct WAVEFORMAT {
    pub wFormatTag: u16,
    pub nChannels: u16,
    pub nSamplesPerSec: u32,
    pub nAvgBytesPerSec: u32,
    pub nBlockAlign: u16,
}

#[repr(C, packed(1))]
pub struct PCMWAVEFORMAT {
    pub wf: WAVEFORMAT,
    pub wBitsPerSample: u16,
}

import "golang.org/x/sys/windows"

type WAVEFORMAT struct {
	wFormatTag uint16
	nChannels uint16
	nSamplesPerSec uint32
	nAvgBytesPerSec uint32
	nBlockAlign uint16
}

type PCMWAVEFORMAT struct {
	wf WAVEFORMAT
	wBitsPerSample uint16
}

type
  WAVEFORMAT = packed record
    wFormatTag: Word;
    nChannels: Word;
    nSamplesPerSec: DWORD;
    nAvgBytesPerSec: DWORD;
    nBlockAlign: Word;
  end;

  PCMWAVEFORMAT = packed record
    wf: WAVEFORMAT;
    wBitsPerSample: Word;
  end;

const WAVEFORMAT = extern struct {
    wFormatTag: u16,
    nChannels: u16,
    nSamplesPerSec: u32,
    nAvgBytesPerSec: u32,
    nBlockAlign: u16,
};

const PCMWAVEFORMAT = extern struct {
    wf: WAVEFORMAT,
    wBitsPerSample: u16,
};

type
  WAVEFORMAT {.packed.} = object
    wFormatTag: uint16
    nChannels: uint16
    nSamplesPerSec: uint32
    nAvgBytesPerSec: uint32
    nBlockAlign: uint16

  PCMWAVEFORMAT {.packed.} = object
    wf: WAVEFORMAT
    wBitsPerSample: uint16

align(1)
struct WAVEFORMAT
{
    ushort wFormatTag;
    ushort nChannels;
    uint nSamplesPerSec;
    uint nAvgBytesPerSec;
    ushort nBlockAlign;
}

align(1)
struct PCMWAVEFORMAT
{
    WAVEFORMAT wf;
    ushort wBitsPerSample;
}

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)
; PCMWAVEFORMAT サイズ: 16 バイト(x64)
dim st, 4    ; 4byte整数×4(構造体サイズ 16 / 4 切り上げ)
; wf : WAVEFORMAT (+0, 14byte)  varptr(st)+0 を基点に操作(14byte:入れ子/配列)
; wBitsPerSample : WORD (+14, 2byte)  wpoke st,14,値  /  値 = wpeek(st,14)
; ※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 WAVEFORMAT, pack=1
    #field short wFormatTag
    #field short nChannels
    #field int nSamplesPerSec
    #field int nAvgBytesPerSec
    #field short nBlockAlign
#endstruct

#defstruct global PCMWAVEFORMAT, pack=1
    #field WAVEFORMAT wf
    #field short wBitsPerSample
#endstruct

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

PCMWAVEFORMAT

フィールド

各言語での定義

HSP用 定義

HSP用定義