/usr/include/opal/iax2/iax2medstrm.h is in libopal-dev 3.10.10~dfsg2-2.1build2.
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*
* Inter Asterisk Exchange 2
*
* Open Phone Abstraction Library (OPAL)
*
* Extension of the Opal Media stream, where the media from the IAX2 side is
* linked to the OPAL
*
* Copyright (c) 2005 Indranet Technologies Ltd.
*
* The contents of this file are subject to the Mozilla Public License
* Version 1.0 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS"
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
* the License for the specific language governing rights and limitations
* under the License.
*
* The Original Code is Open Phone Abstraction Library.
*
* The Initial Developer of the Original Code is Indranet Technologies Ltd.
*
* The author of this code is Derek J Smithies
*
* $Revision: 27149 $
* $Author: rjongbloed $
* $Date: 2012-03-07 18:32:36 -0600 (Wed, 07 Mar 2012) $
*/
#ifndef OPAL_IAX2_MEDIASTRM_H
#define OPAL_IAX2_MEDIASTRM_H
#ifdef P_USE_PRAGMA
#pragma interface
#endif
#include <opal/buildopts.h>
#if OPAL_IAX2
#include <opal/mediafmt.h>
#include <iax2/iax2con.h>
class RTP_Session;
class OpalMediaPatch;
class OpalLine;
/**This class describes a media stream, which is an interface to the opal classes for
generating encoded media data
*/
class OpalIAX2MediaStream : public OpalMediaStream
{
PCLASSINFO(OpalIAX2MediaStream, OpalMediaStream);
/**@name Construction and Destruction*/
//@{
/**Construct a new media stream for connecting to the media.
This method grabs a SafeReference on the connection, so the connection won't go away on us.
*/
OpalIAX2MediaStream(
IAX2Connection &con, /*!< IAX connection to read/send incoming packets */
const OpalMediaFormat & mediaFormat, /*!< Media format for stream */
unsigned sessionID, /*!< Session number for stream */
PBoolean isSource /*!< Is a source stream */
);
/**Destroy a new media stream for connecting to the media.
This method releases the SafeReference on the connection, so the connection can be destroyed */
~OpalIAX2MediaStream();
//@}
public:
/**@name Overrides of OpalMediaStream class */
//@{
/**Open the media stream.
*/
virtual PBoolean Open();
/**Start the media stream.
The default behaviour calls Resume() on the associated
OpalMediaPatch thread if it was suspended.
*/
virtual PBoolean Start();
/**
Goes to the IAX2Connection class, and removes a packet from the connection. The connection class turned the media
packet into a RTP_DataFrame class, and jitter buffered it.
@return true on successful read of a packet, false on faulty read.*/
virtual PBoolean ReadPacket(
RTP_DataFrame & packet ///< Data buffer to read to
);
/**Write raw media data to the sink media stream.
The default behaviour writes to the OpalLine object.
*/
virtual PBoolean WriteData(
const BYTE * data, ///< Data to write
PINDEX length, ///< Length of data to write.
PINDEX & written ///<Length of data actually written
);
/**Indicate if the media stream is synchronous.
@Return false if this stream is from the network.
@return true if this stream is from a sound card.
*/
virtual PBoolean IsSynchronous() const;
//@}
protected:
virtual void InternalClose() { }
/**The connection is the source/sink of our data packets */
IAX2Connection & connection;
/**There was unused data from an incoming ethernet frame. The
unused data is stored here.
*/
PBYTEArray pendingData;
};
#endif // OPAL_IAX2
#endif // OPAL_IAX2_MEDIASTRM_H
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