audbeos.h
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上传日期:2007-06-06
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- /* ***** BEGIN LICENSE BLOCK *****
- * Version: RCSL 1.0/RPSL 1.0
- *
- * Portions Copyright (c) 1995-2002 RealNetworks, Inc. All Rights Reserved.
- *
- * The contents of this file, and the files included with this file, are
- * subject to the current version of the RealNetworks Public Source License
- * Version 1.0 (the "RPSL") available at
- * http://www.helixcommunity.org/content/rpsl unless you have licensed
- * the file under the RealNetworks Community Source License Version 1.0
- * (the "RCSL") available at http://www.helixcommunity.org/content/rcsl,
- * in which case the RCSL will apply. You may also obtain the license terms
- * directly from RealNetworks. You may not use this file except in
- * compliance with the RPSL or, if you have a valid RCSL with RealNetworks
- * applicable to this file, the RCSL. Please see the applicable RPSL or
- * RCSL for the rights, obligations and limitations governing use of the
- * contents of the file.
- *
- * This file is part of the Helix DNA Technology. RealNetworks is the
- * developer of the Original Code and owns the copyrights in the portions
- * it created.
- *
- * This file, and the files included with this file, is distributed and made
- * available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS
- * FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- *
- * Technology Compatibility Kit Test Suite(s) Location:
- * http://www.helixcommunity.org/content/tck
- *
- * Contributor(s):
- *
- * ***** END LICENSE BLOCK ***** */
- /*******************************************************************
- *
- * audbeos.h
- *
- * CLASS: CAudioOutBeOS
- *
- * DESCRIPTION: Class definition for BeOS-specific audio devices
- *
- *******************************************************************/
- #ifndef _AUDBEOS_H_
- #define _AUDBEOS_H_
- #include <GameSoundDefs.h>
- struct IHXCallback;
- class BPushGameSound;
- #define _BEOS_AUDIODEV_CALLBACK 0
- class CAudioOutBeOS : public CHXAudioDevice
- {
- public:
- CAudioOutBeOS();
- #if _BEOS_AUDIODEV_CALLBACK
- /* Create friend class for scheduled playback callback.
- */
- class HXPlaybackCountCb : public IHXCallback
- {
- private:
- LONG32 m_lRefCount;
- ~HXPlaybackCountCb();
- PRIVATE_DESTRUCTORS_ARE_NOT_A_CRIME
- public:
- HXPlaybackCountCb(BOOL timed = TRUE);
- BOOL m_timed;
- CAudioOutBeOS *m_pAudioDeviceObject;
- /*
- * IUnknown methods
- */
- STDMETHOD(QueryInterface) (THIS_
- REFIID riid,
- void** ppvObj);
- STDMETHOD_(ULONG32,AddRef) (THIS);
- STDMETHOD_(ULONG32,Release) (THIS);
- /*
- * IHXCallback methods
- */
- STDMETHOD(Func) (THIS);
- };
- friend HXPlaybackCountCb;
- #endif
- protected:
- virtual ~CAudioOutBeOS();
- HX_RESULT _Imp_Open( const HXAudioFormat* pFormat );
- HX_RESULT _Imp_Close( void );
- HX_RESULT _Imp_Seek(ULONG32 ulSeekTime);
- HX_RESULT _Imp_Pause( void );
- HX_RESULT _Imp_Resume( void );
- HX_RESULT _Imp_Write( const HXAudioData* pAudioOutData );
- HX_RESULT _Imp_Reset( void );
- HX_RESULT _Imp_Drain( void );
- BOOL _Imp_SupportsVolume( void );
- UINT16 _Imp_GetVolume( void );
- HX_RESULT _Imp_SetVolume( const UINT16 uVolume );
- HX_RESULT _Imp_CheckFormat( const HXAudioFormat* pFormat);
- HX_RESULT _Imp_GetCurrentTime( ULONG32& ulCurrentTime);
- INT16 _Imp_GetAudioFd(void) {return 0;};
- UINT16 _NumberOfBlocksRemainingToPlay(void);
- private:
- void SetFormat(const HXAudioFormat* pFormat);
- UINT32 CalculateElapsedBytes(UINT32 ulLastBytePos, UINT32 ulCurrentBytePos);
- UINT32 CalcMs(ULONG32 ulNumBytes);
- #if _BEOS_AUDIODEV_CALLBACK
- void DoTimeSyncs(void);
- HX_RESULT ReschedPlaybackCheck(void);
- #endif
- BPushGameSound *m_player;
- gs_audio_format m_gameSoundFormat;
- CHXSimpleList *m_pPendingBufferList;
- UINT32 m_ulLastPlayCursor;
- UINT32 m_ulCurrentPlayTime;
- UINT32 m_ulLastTimeSync;
- UINT32 m_ulBufferSize;
- UINT32 m_ulFrameSize;
- UINT32 m_ulNextWriteOffset;
- UINT32 m_ulOldBytesLeft;
- UINT32 m_ulBlockSize;
- HX_BITFIELD m_bGotAWrite : 1;
- HX_BITFIELD m_bFirstWrite : 1;
- HX_BITFIELD m_bPlaying : 1;
- #if _BEOS_AUDIODEV_CALLBACK
- Timeval *m_pPlaybackCountCBTime;
- BOOL m_bCallbackPending;
- ULONG32 m_PendingCallbackID;
- #endif
- };
- #endif // _AUDBEOS_H_