audio_session-mda.h
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- /* ***** BEGIN LICENSE BLOCK *****
- * Source last modified: $Id: audio_session-mda.h,v 1.1.4.4 2004/07/09 02:01:29 hubbe Exp $
- *
- * Portions Copyright (c) 1995-2004 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 (the "RPSL") available at
- * http://www.helixcommunity.org/content/rpsl unless you have licensed
- * the file under the current version of the RealNetworks Community
- * Source License (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.
- *
- * Alternatively, the contents of this file may be used under the
- * terms of the GNU General Public License Version 2 or later (the
- * "GPL") in which case the provisions of the GPL are applicable
- * instead of those above. If you wish to allow use of your version of
- * this file only under the terms of the GPL, and not to allow others
- * to use your version of this file under the terms of either the RPSL
- * or RCSL, indicate your decision by deleting the provisions above
- * and replace them with the notice and other provisions required by
- * the GPL. If you do not delete the provisions above, a recipient may
- * use your version of this file under the terms of any one of the
- * RPSL, the RCSL or the GPL.
- *
- * 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 ***** */
- #ifndef _AUDIO_SESSION_H_
- #define _AUDIO_SESSION_H_
- #include <e32base.h>
- #include <MdaAudioOutputStream.h>
- #include <mda/common/audio.h>
- #include <stdio.h>
- #include "../audio_svr.h"
- #include "hxslist.h"
- class CHXSimpleList;
- class HXSymbianAudioTimeline
- {
- public:
- HXSymbianAudioTimeline();
- ~HXSymbianAudioTimeline();
-
- void Reset(UINT32 ulByteRate); // called to reset the state of this object
- void OnWrite(UINT32 ulBytes); // called when bytes are written to the device
- UINT32 GetPlaybackTime(); // Returns current playback time
- UINT32 GetWrittenTime() const; // Returns number of ms of data written
- UINT32 GetWallclockTime() const; // Returns number of ms elapsed since the first
- // non-zero device position was returned
- void OnPlay();
- void OnPauseOrUnderflow();
- inline BOOL NeedDeviceTime() const;
- void SetDeviceTime(UINT32 ulDeviceTimeMs);
- private:
- inline UINT32 GetMs(UINT32 ulSec, UINT32 ulSubSec) const; // Computes milliseconds
- void ClearWritten(); // Clears written bytes state
-
- UINT32 m_ulByteRate; // Bytes/second of audio data.
- // Stereo 44100 16 bit audio would be 176400
- UINT32 m_ulSecWritten; // Seconds of data written
- UINT32 m_ulSubSecBytes; // Fraction of a second written in bytes.
- UINT32 m_ulBaseSec; // Base time seconds
- UINT32 m_ulBaseSubSecBytes; // Base time fraction in bytes
- UINT32 m_ulLastGetTime; // return value of last GetTime() call.
- // This is used to force monotonically increasing
- // time values.
- UINT32 m_ulDevTimeMs; // First non-zero position returned from the device
- UINT32 m_ulWallclockTime; // Wallclock time associated with m_ulDevTimeMs
- };
- /*
- * class HXSymbianAudioSession
- *
- */
- class HXSymbianAudioSession : public CSession,
- public MMdaAudioOutputStreamCallback {
- public:
- HXSymbianAudioSession(RThread& client, HXSymbianAudioServer* pServer);
- virtual ~HXSymbianAudioSession();
- static HXSymbianAudioSession* NewL(RThread& client,
- HXSymbianAudioServer* pServer);
- virtual void ServiceL(const RMessage& mesg);
- void NotifyDeviceTaken();
- protected:
- void Init();
- void Play();
- void Pause();
- void Write();
- void GetTime();
- void GetBlocksBuffered();
- void SetVolume();
- void GetVolume();
- void GetMaxVolume();
- void GetMinVolume();
- void Stop();
- void RequestDeviceTakenNotification();
- void CancelDeviceTakenNotification();
- virtual void MaoscOpenComplete(TInt aError);
- virtual void MaoscBufferCopied(TInt aError, const TDesC8& aBuffer);
- virtual void MaoscPlayComplete(TInt aError);
- void DoCleanup();
- UINT32 GetByteRate() const;
- UINT32 GetDeviceMs();
- BOOL ReadyToWrite() const;
- TInt WriteNextBuffer();
- private:
- // audio request server
- HXSymbianAudioServer* m_pServer;
- // audio stream interface
- CMdaAudioOutputStream* m_pStream;
- // audio device sample rate
- TMdaAudioDataSettings::TAudioCaps m_sampleRate;
- // audio device channels
- TMdaAudioDataSettings::TAudioCaps m_channels;
- // audio settings
- TMdaAudioDataSettings m_settings;
- // temp data pointer
- TPtr8 m_pData;
- // async write message
- RMessage m_writeMessage;
- RMessage m_notifyRequest;
- // flag indication notification requested
- bool m_wantsNotify;
- // reason device was taken
- int m_reason;
- // true if device has been opened
- bool m_open;
- // true if Complete() called on Write() msg
- HXSymbianAudioTimeline m_timeline;
- CHXSimpleList m_bufferList;
- BOOL m_bPaused;
- BOOL m_bWritePending;
- };
- #endif // _AUDIO_SESSION_H_