audqnx.h
上传用户:zhongxx05
上传日期:2007-06-06
资源大小:33641k
文件大小:7k
- /* ***** 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 ***** */
- /*******************************************************************
- * audlinux.h
- *
- * CLASS: CAudioOutQNX
- *
- * DESCRIPTION: Class definition for QNX-specific audio devices
- *******************************************************************/
- #ifndef _AUDLINUX
- #define _AUDLINUX
- #include <sys/asound.h>
- // foward decls.
- struct IHXCallback;
- #include "hxcom.h"
- #include "hxausvc.h"
- #include "auderrs.h"
- #include "hxaudev.h"
- /*
- * Used to indicate the current exported state of the virtual audio device.
- */
- typedef enum audio_state
- {
- RA_AOS_CLOSED, // Normal non-playing state
- RA_AOS_OPENING, // Opened, before first audio buffer play b
- RA_AOS_OPEN_PAUSED, // Opened and paused
- RA_AOS_OPEN_PLAYING, // Opened and after first audio buffer play begins
- RA_AOS_CLOSING // We've been told to close after audio fin
- } AUDIOSTATE;
- class CAudioOutQNX : public CHXAudioDevice
- {
- public:
- CAudioOutQNX();
- /* 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;
- CAudioOutQNX* 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;
- protected:
- virtual ~CAudioOutQNX();
- 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* pAudioOutHdr );
- 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);
- UINT16 _NumberOfBlocksRemainingToPlay(void);
- ULONG32 _GetPlaybackBuffer(void);
- AUDIOERROR SetDeviceConfig( const HXAudioFormat* pFormat );
- /* Get number of bytes played.
- */
- ULONG32 GetPlaybackBytes(void);
- void DoTimeSyncs(void);
- HX_RESULT ReschedPlaybackCheck(void);
- BOOL BuffersEmpty(void);
- void OpenMixer();
- void CloseMixer();
- private:
- int m_wID; // Audio device id
- int mixm_wID; // Audio mixer id; used for volume control
- int m_wPCMChannel; // PCM Channel id
- HXAudioData m_rAudioHdr; // Format of audio coming out of the decoder.
- UCHAR* m_pEbuf; // Tmp buffer for 8-bit audio conversion
- AUDIOSTATE m_wState; // This is
- AUDIOERROR m_wLastError; // The last error d
- char m_DevName[25]; /* Flawfinder: ignore */
- char m_DevCtlName[25]; /* Flawfinder: ignore */
- BOOL m_bMixerPresent;
- UINT16 m_wBlockSize;
- int m_log; // log file of pcm
- ULONG32 m_ulLastNumBytes; // Number of bytes played back since last open
- ULONG32 m_ulBytesRemaining; // Number of bytes remaining
- BOOL m_bFirstWrite; // First write
- ULONG32 m_ulTotalWritten; // Total bytes written
- ULONG32 m_ulFragSize; // The Fragment Size
- Timeval* m_pPlaybackCountCBTime;
- ULONG32 m_PendingCallbackID; // Used for fake time sync
- BOOL m_bCallbackPending; // Used for fake time sync
- BOOL m_paused;
- CHXSimpleList* m_pWriteList;
- UINT32 m_last_audio_time;
- UINT32 m_sample_rate;
- UINT32 m_num_channels;
- UINT32 m_ulLastTimeChecked;
- UINT32 m_ulLastTimeReturned;
- UINT32 m_ulPauseBytes;
- //Some member vars to help keep track of data that is currently
- //in the device. We use this do a smart Pause/Resume for those
- //devices that can't do it in hardware.
- //block size is in audUNIX::m_wBlockSize
- //here is the buffer list to keep a copy of the data in the
- //device. We need to keep as many buffers, at m_wBlockSize in
- //size each, to cover the entire data space of the device.
- //CHXAudioDevice passes in chunks of size m_wBlockSize.
- //The device holds fragment_size*num_fragments as reported by
- //the device after it has had a chance to compute the frag size.
- //This occurs AFTER the other qualities like sample size, sample
- //rate have already been set.
- ULONG32 m_ulDeviceBufferSize;
- UCHAR* m_pRollbackBuffer;
- };
- #endif // _AUDIOOUTLINUX