MCI CDオーディオの単純なラッパクラス (CMciCDAudio) [MCI]

#pragma once

// WAC.com Class Liblary for Visual C++

// Copyright (C) WAC.com Inc. All rights reserved.

//

// This file is a part of the WAC.com Class Liblary.

// The use and distribution terms for this software are covered by the

// Common Public License 1.0 (http://opensource.org/licenses/cpl.php)

// which can be found in the file CPL.TXT at the root of this distribution.

// By using this software in any fashion, you are agreeing to be bound by

// the terms of this license. You must not remove this notice, or

// any other, from this software.

// 07.05.14 : コードの整備 (sha)

// 07.05.15 : x64対応 (sha)

#include "MCIDevice.h"

/////////////////////////////////////////////////////////////////////////////

// CMciCDAudioT

template <class TBase>

class CMciCDAudioT : public TBase

{

protected:

    typedef CMciCDAudioT                        thisClass;

public:

    CMciCDAudioT()

    {

    }

    virtual ~CMciCDAudioT()

    {

    }

public:

    // デバイスのオープン

    MCIERROR Open(LPCTSTR szDrive = NULL)

    {

        ATLASSERT(m_nDeviceID == 0);

        DWORD_PTR dwFlags = MCI_WAIT | MCI_OPEN_TYPE;

        MCI_OPEN_PARMS params = { 0 };

        params.lpstrDeviceType = (LPCTSTR)thisClass::GetDeviceType(szDrive);

        MCIERROR dwResult = this->SendCommand(MCI_OPEN, dwFlags, (DWORD_PTR)&params);

        if (dwResult != 0)

        {

            return dwResult;

        }

        this->SetTimeFormat(MCI_FORMAT_TMSF);

        m_nDeviceID = params.wDeviceID;

        return dwResult;

    }

public:

    // トラック数の取得

    MCIERROR GetTrackCount(DWORD_PTR& dwTrackCount)

    {

        // 初期化

        dwTrackCount = 0;

        DWORD_PTR dwFlags = MCI_STATUS_ITEM | MCI_WAIT;

        MCI_STATUS_PARMS params = { 0 };

        params.dwItem = MCI_STATUS_NUMBER_OF_TRACKS;

        MCIERROR dwResult = this->SendCommand(MCI_STATUS, dwFlags, (DWORD_PTR)&params);

        if (dwResult != 0)

        {

            return dwResult;

        }

        dwTrackCount = params.dwReturn;

        return dwResult;

    }

    // トラックの種類の取得

    DWORD GetTrackType(DWORD dwTrack, DWORD_PTR& dwTrackType)

    {

        // 初期化

        dwTrackType = 0;

        DWORD_PTR dwFlags = MCI_WAIT | MCI_STATUS_ITEM | MCI_TRACK;

        MCI_STATUS_PARMS params = { 0 };

        params.dwItem = MCI_CDA_STATUS_TYPE_TRACK;

        params.dwTrack = dwTrack;

        MCIERROR dwResult = this->SendCommand(MCI_STATUS, dwFlags, (DWORD_PTR)&params);

        if (dwResult != 0)

        {

            return dwResult;

        }

        dwTrackType = params.dwReturn;

        return dwResult;

    }

    // トラックの開始位置の取得

    DWORD GetTrackPosition(DWORD dwTrack, DWORD_PTR& dwTrackPosition)

    {

        // 初期化

        dwTrackPosition = 0;

        DWORD_PTR dwFlags = MCI_WAIT | MCI_STATUS_ITEM | MCI_TRACK;

        MCI_STATUS_PARMS params = { 0 };

        params.dwItem = MCI_STATUS_POSITION;

        params.dwTrack = dwTrack;

        MCIERROR dwResult = this->SendCommand(MCI_STATUS, dwFlags, (DWORD_PTR)&params);

        if (dwResult != 0)

        {

            return dwResult;

        }

        dwTrackPosition = params.dwReturn;

        return dwResult;

    }

    // トラック長の取得

    DWORD GetTrackLength(DWORD dwTrack, DWORD_PTR& dwTrackLength)

    {

        // 初期化

        dwTrackLength = 0;

        DWORD_PTR dwFlags = MCI_WAIT | MCI_STATUS_ITEM | MCI_TRACK;

        MCI_STATUS_PARMS params = { 0 };

        params.dwItem = MCI_STATUS_LENGTH;

        params.dwTrack = dwTrack;

        MCIERROR dwResult = this->SendCommand(MCI_STATUS, dwFlags, (DWORD_PTR)&params);

        if (dwResult != 0)

        {

            return dwResult;

        }

        dwTrackLength = params.dwReturn;

        return dwResult;

    }

protected:

    static CString GetDeviceType(LPCTSTR szDrive)

    {

        CString strDeviceType;

        if (szDrive == NULL)

        {

            strDeviceType = _T("cdaudio");

        }

        else

        {

            CString strDrive = thisClass::PathRemoveBackslash(szDrive);                    // SHLWAPI 4.71

            strDeviceType.Format(_T("cdaudio!%s"), strDrive);

        }

        return strDeviceType;

    }

protected:

    // ShlwapiHelper.hよりコピー

    static CString PathRemoveBackslash(CString strPath)

    {

        TCHAR szPath[_MAX_PATH] = { 0 };

#ifdef _SECURE_ATL

        _tcscpy_s(szPath, strPath);

#else

        _tcscpy(szPath, strPath);

#endif

        ::PathRemoveBackslash(szPath);                                                    // SHLWAPI 4.71

        return szPath;

    }

};

typedef CMciCDAudioT<CMciDevice>        CMciCDAudio;