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/* -*- C++ -*- */
// $Id$
// ============================================================================
//
// = LIBRARY
// cos
//
// = FILENAME
// Endpoint_Strategy.h
//
// = AUTHOR
// Sumedh Mungee <sumedh@cs.wustl.edu>
//
//
// ============================================================================
#ifndef TAO_AV_ENDPOINT_STRATEGY_H
#define TAO_AV_ENDPOINT_STRATEGY_H
#include "orbsvcs/AV/AVStreams_i.h"
#include "tao/TAO.h"
class TAO_ORBSVCS_Export TAO_AV_Endpoint_Strategy
// = DESCRIPTION
// Base class to define various endpoint strategies
// used by the MMDevice to create the Endpoint and Vdev
{
public:
TAO_AV_Endpoint_Strategy (void);
// Constructor
virtual ~TAO_AV_Endpoint_Strategy (void);
// Destructor
virtual int create_A (AVStreams::StreamEndPoint_A_ptr &stream_endpoint,
AVStreams::VDev_ptr &vdev,
CORBA::Environment &env);
// Called by the MMDevice, when it needs to create an A type endpoint
virtual int create_B (AVStreams::StreamEndPoint_B_ptr &stream_endpoint,
AVStreams::VDev_ptr &vdev,
CORBA::Environment &env);
// Called by the MMDevice, when it needs to create an B type endpoint
protected:
AVStreams::StreamEndPoint_A_ptr stream_endpoint_a_;
// The "A" stream endpoint
AVStreams::StreamEndPoint_B_ptr stream_endpoint_b_;
// The "B" stream endpoint
AVStreams::VDev_ptr vdev_;
// The vdev
};
// ----------------------------------------------------------------------
class TAO_ORBSVCS_Export TAO_AV_Endpoint_Process_Strategy
: public TAO_AV_Endpoint_Strategy
// = DESCRIPTION
// Process-based strategy for creating endpoints
// Abstract base class.
{
public:
TAO_AV_Endpoint_Process_Strategy (ACE_Process_Options *process_options);
// Constructor. The process_options contain the name and arguments
// for the process to be created
virtual ~TAO_AV_Endpoint_Process_Strategy (void);
// Destructor.
virtual int activate (void);
// creates a new child process, and waits on a semaphore
// until the child process has finished creating the endpoints
protected:
virtual int bind_to_naming_service (CORBA::Environment &env);
// Bind to the naming service
virtual int get_stream_endpoint (CORBA::Environment &env) = 0;
// Get the object reference for the newly created stream
// endpoint (which will be in the child process)
// Subclasses will define the functionality for this
virtual int get_vdev (CORBA::Environment &env);
// Get the Vdev object reference for the newly created
// endpoint
CosNaming::NamingContext_var naming_context_;
// Naming context
ACE_Process_Options *process_options_;
// Name and arguments for the process to be created
char host_[MAXHOSTNAMELEN];
// name of this host used for resolving unique names.
pid_t pid_;
// My child's process id.
};
// ----------------------------------------------------------------------
class TAO_ORBSVCS_Export TAO_AV_Endpoint_Process_Strategy_A
: public TAO_AV_Endpoint_Process_Strategy
// = DESCRIPTION
// Process-based strategy to create "A" type endpoints
{
public:
TAO_AV_Endpoint_Process_Strategy_A (ACE_Process_Options *process_options);
// Constructor
virtual ~TAO_AV_Endpoint_Process_Strategy_A (void);
// Destructor.
protected:
virtual int create_A (AVStreams::StreamEndPoint_A_ptr &stream_endpoint,
AVStreams::VDev_ptr &vdev,
CORBA::Environment &env);
// Creates an "A" type stream endpoint, and a vdev
virtual int get_stream_endpoint (CORBA::Environment &env);
// Gets the "A" type stream endpoint from the child process
};
// ----------------------------------------------------------------------
class TAO_ORBSVCS_Export TAO_AV_Endpoint_Process_Strategy_B
: public TAO_AV_Endpoint_Process_Strategy
// = DESCRIPTION
// Process-based strategy to create "B" type endpoints
{
public:
TAO_AV_Endpoint_Process_Strategy_B (ACE_Process_Options *process_options);
// Constructor
virtual ~TAO_AV_Endpoint_Process_Strategy_B (void);
// Destructor.
protected:
virtual int create_B (AVStreams::StreamEndPoint_B_ptr &stream_endpoint,
AVStreams::VDev_ptr &vdev,
CORBA::Environment &env);
// Creates a "B" type stream endpoint, and a vdev
virtual int get_stream_endpoint (CORBA::Environment &env);
// Gets the object reference of the "B" type streamendpoint.
};
// Include the templates here.
#include "Endpoint_Strategy_T.h"
#endif /* TAO_AV_ENDPOINT_STRATEGY_H */
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