/usr/include/sipxtapi/mp/MprFromStream.h is in libsipxtapi-dev 3.3.0~test17-2.1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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// Copyright (C) 2006 SIPez LLC.
// Licensed to SIPfoundry under a Contributor Agreement.
//
// Copyright (C) 2004-2006 SIPfoundry Inc.
// Licensed by SIPfoundry under the LGPL license.
//
// Copyright (C) 2004-2006 Pingtel Corp. All rights reserved.
// Licensed to SIPfoundry under a Contributor Agreement.
//
// $$
///////////////////////////////////////////////////////////////////////////////
#ifndef DISABLE_STREAM_PLAYER // [
#ifndef _MprFromStream_h_
#define _MprFromStream_h_
// SYSTEM INCLUDES
// APPLICATION INCLUDES
#include "mp/dtmflib.h"
#include "mp/MpFlowGraphMsg.h"
#include "mp/MpAudioResource.h"
#include "mp/StreamDefs.h"
#include "mp/MpStreamFeeder.h"
#include "os/OsLockingList.h"
// DEFINES
// MACROS
// EXTERNAL FUNCTIONS
// EXTERNAL VARIABLES
// CONSTANTS
// STRUCTS
// TYPEDEFS
typedef struct tagSTREAMDESC
{
StreamHandle handle ;
MpStreamFeeder* pFeeder ;
} STREAMDESC ;
// FORWARD DECLARATIONS
/// @brief This resource is an insertion point for the streaming
/// infrastructure by connecting the flowgraph to MpStreamFeeders.
/**
* Whenever requested to "realize" a stream, this code will create a
* MpStreamFeeder which inturn creates a StreamDataSource and a
* StreamFormatDecoder. Many MpStreamFeeders may be managed/created by
* a single MprFromStream, however, only one can be active at only one
* point.
*
* For thread safety, all operations (play, destroy, rewind, etc.)
* result in a message being posted to itself. This forces all of the
* tasks to be performed on the same task context. The "realize"
* operation is an exception, where it is processed on the called
* context.
*
* Additionally, the code creates a level of indirection between between
* the implementation and calling parties (application layer). All
* MpStreamFeeders created by this resource are collected within a list
* (mStreamList) and only a handle to the resource is exposed to
* application layer. Handles are unique for an instance of a
* MprFromStream. If the destruct is called for MprFromStream and the
* mStreamList is not null, the list is purged.
*
*
* This class bubbles events to the MpStreamFeeder by calling the
* fromStreamUpdate callback on the feeder itself.
*/
class MprFromStream : public MpAudioResource
{
/* //////////////////////////// PUBLIC //////////////////////////////////// */
public:
/* ============================ CREATORS ================================== */
///@name Creators
//@{
MprFromStream(const UtlString& rName);
//:Constructor
virtual
~MprFromStream();
//:Destructor
//@}
/* ============================ MANIPULATORS ============================== */
///@name Manipulators
//@{
OsStatus realize(Url urlSource,
int flags,
StreamHandle &handle,
OsNotification* event = NULL);
OsStatus realize(UtlString* pBuffer,
int flags,
StreamHandle &handle,
OsNotification* event = NULL);
OsStatus prefetch(StreamHandle handle);
OsStatus play(StreamHandle handle);
OsStatus rewind(StreamHandle handle);
OsStatus pause(StreamHandle handle);
OsStatus stop(StreamHandle handle) ;
OsStatus destroy(StreamHandle handle) ;
OsStatus getFlags(StreamHandle handle, int& flags) ;
//@}
/* ============================ ACCESSORS ================================= */
///@name Accessors
//@{
//@}
/* ============================ INQUIRY =================================== */
///@name Inquiry
//@{
//@}
/* //////////////////////////// PROTECTED ///////////////////////////////// */
protected:
OsStatus setStreamSource(MpStreamFeeder *pFeeder) ;
MpStreamFeeder* getStreamSource() ;
/* //////////////////////////// PRIVATE /////////////////////////////////// */
private:
typedef enum
{
SOURCE_PLAY = MpFlowGraphMsg::RESOURCE_SPECIFIC_START,
SOURCE_PAUSE,
SOURCE_REWIND,
SOURCE_STOP,
SOURCE_DESTROY,
SOURCE_RENDER
} AddlMsgTypes;
OsNotification* mpNotify;
MpStreamFeeder* mpStreamRenderer;
FeederEvent mEventState;
UtlBoolean mbStreamChange;
int miStreamCount; ///< Count for generating unique handles
OsLockingList mStreamList; ///< List of stream players
virtual UtlBoolean doProcessFrame(MpBufPtr inBufs[],
MpBufPtr outBufs[],
int inBufsSize,
int outBufsSize,
UtlBoolean isEnabled,
int samplesPerFrame,
int samplesPerSecond);
/// Handle messages for this resource.
virtual UtlBoolean handleMessage(MpFlowGraphMsg& rMsg);
UtlBoolean handleRender(MpStreamFeeder* pFeeder);
UtlBoolean handlePlay(MpStreamFeeder* pFeeder);
UtlBoolean handleRewind(MpStreamFeeder* pFeeder);
UtlBoolean handlePause(MpStreamFeeder* pFeeder);
UtlBoolean handleStop(MpStreamFeeder* pFeeder);
UtlBoolean handleDestroy(MpStreamFeeder* pFeeder);
/// Copy constructor (not implemented for this class)
MprFromStream(const MprFromStream& rMprFromStream);
/// Assignment operator (not implemented for this class)
MprFromStream& operator=(const MprFromStream& rhs);
/// Get the stream feeder for the given handle
MpStreamFeeder* getStreamFeeder(StreamHandle handle) ;
/// Removes the stream feeder from the stream list.
MpStreamFeeder* removeStreamFeeder(StreamHandle handle) ;
/**<
* The Stream feeder is returned if found, someone else is responsible for
* deleting it.
*/
/// Stops, destroys, and frees all stream feeders
void destroyFeeders() ;
};
/* ============================ INLINE METHODS ============================ */
#endif /* _MprFromStream_h_ */
#endif // DISABLE_STREAM_PLAYER ]
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