simpleplayer.h

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/*
**  Command & Conquer Generals Zero Hour(tm)
**  Copyright 2025 Electronic Arts Inc.
**
**  This program is free software: you can redistribute it and/or modify
**  it under the terms of the GNU General Public License as published by
**  the Free Software Foundation, either version 3 of the License, or
**  (at your option) any later version.
**
**  This program is distributed in the hope that it will be useful,
**  but WITHOUT ANY WARRANTY; without even the implied warranty of
**  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
**  GNU General Public License for more details.
**
**  You should have received a copy of the GNU General Public License
**  along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/
 
 
#ifndef SIMPLEPLAYER_H
#define SIMPLEPLAYER_H
 
#include "wmsdk.h"
 
//
// we preserve a list of "ready-to-free" list of wave headers for the
// caller to unprepare and free
//
typedef struct WAVEHDR_LIST {
    LPWAVEHDR           pwh;
    struct WAVEHDR_LIST *next;
}   WAVEHDR_LIST;
 
#define SIMPLE_PLAYER_OPEN_EVENT  _T( "45ab58e0-382e-4d1c-ac50-88a5f9601851" )
#define SIMPLE_PLAYER_CLOSE_EVENT _T( "276095fa-a8e0-48e6-ac61-8b0002345607" )
#define WMAPLAY_EVENT             _T( "9e828a72-64f3-48f0-9de8-13dafd0cbd3a" )
class CSimplePlayer : public IWMReaderCallback
{
public:
    CSimplePlayer( HRESULT* phr );
    ~CSimplePlayer();
    
    virtual HRESULT Play( LPCWSTR pszUrl, DWORD dwSecDuration, HANDLE hCompletionEvent, HRESULT *phrCompletion );
 
//
// IUnknown Implemenation
//
public:
    virtual HRESULT STDMETHODCALLTYPE QueryInterface(
        REFIID riid,
        void **ppvObject );
 
    virtual ULONG STDMETHODCALLTYPE AddRef();
    virtual ULONG STDMETHODCALLTYPE Release();
 
//
// IWMReaderCallback Implemenation
//
public:
    virtual HRESULT STDMETHODCALLTYPE OnSample( 
        /* [in] */ DWORD dwOutputNum,
        /* [in] */ QWORD cnsSampleTime,
        /* [in] */ QWORD cnsSampleDuration,
        /* [in] */ DWORD dwFlags,
        /* [in] */ INSSBuffer __RPC_FAR *pSample,
        /* [in] */ void __RPC_FAR *pvContext);
    
    virtual HRESULT STDMETHODCALLTYPE OnStatus( 
        /* [in] */ WMT_STATUS Status,
        /* [in] */ HRESULT hr,
        /* [in] */ WMT_ATTR_DATATYPE dwType,
        /* [in] */ BYTE __RPC_FAR *pValue,
        /* [in] */ void __RPC_FAR *pvContext);
 
//
// Helper Methods
//
protected:
 
    HRESULT Close();
 
    void OnWaveOutMsg( UINT uMsg, DWORD dwParam1, DWORD dwParam2 );
 
    static void CALLBACK WaveProc(
                          HWAVEOUT hwo,      
                          UINT uMsg,         
                          DWORD dwInstance,  
                          DWORD dwParam1,    
                          DWORD dwParam2 );
 
    HRESULT AddWaveHeader( LPWAVEHDR pwh );
    void    RemoveWaveHeaders( void );
 
    CRITICAL_SECTION    m_CriSec;
    WAVEHDR_LIST       *m_whdrHead;
 
    LONG    m_cRef;
    LONG    m_cBuffersOutstanding;
    BOOL    m_fEof;
    HANDLE  m_hCompletionEvent;
 
    IWMReader *m_pReader;
    IWMHeaderInfo *m_pHeader;
    HWAVEOUT m_hwo;
 
    HRESULT *m_phrCompletion;
 
    HRESULT m_hrOpen;
    HANDLE m_hOpenEvent;
    HANDLE m_hCloseEvent;
 
    union
    {
        WAVEFORMATEX m_wfx;
        BYTE m_WfxBuf[1024];
    };
 
    LPWSTR  m_pszUrl;
 
};
 
#endif // SIMPLEPLAYER_H