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/* -*- C++ -*- */
// $Id$
// ============================================================================
//
// = LIBRARY
// cos
//
// = FILENAME
// Endpoint_Strategy.h
//
// = AUTHOR
// Sumedh Mungee <sumedh@cs.wustl.edu>
//
//
// ============================================================================
#if !defined (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 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 virtual 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 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
private:
ACE_Process_Options *process_options_;
// Name and arguments for the process to be created
};
// ----------------------------------------------------------------------
class TAO_ORBSVCS_Export TAO_AV_Endpoint_Process_Strategy_A
: public virtual 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
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 virtual 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
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);
};
// ----------------------------------------------------------------------
template <class T_StreamEndpoint, class T_VDev , class T_MediaCtrl>
class TAO_ORBSVCS_Export TAO_AV_Endpoint_Reactive_Strategy_A
: public virtual TAO_AV_Endpoint_Strategy
// = DESCRIPTION
// Reactive strategy
{
public:
TAO_AV_Endpoint_Reactive_Strategy_A (TAO_ORB_Manager *orb_manager);
virtual int create_A (void);
private:
TAO_ORB_Manager *orb_manager_;
};
// ----------------------------------------------------------------------
template <class T_StreamEndpoint, class T_Vdev , class T_MediaCtrl>
class TAO_ORBSVCS_Export TAO_AV_Endpoint_Reactive_Strategy_B
: public virtual TAO_AV_Endpoint_Strategy
// = DESCRIPTION
// Reactive strategy
{
public:
TAO_AV_Endpoint_Reactive_Strategy_B (TAO_ORB_Manager *);
virtual int create_B (void);
private:
TAO_ORB_Manager *orb_manager_;
};
// ----------------------------------------------------------------------
template <class T_StreamEndpoint, class T_VDev , class T_MediaCtrl>
class TAO_ORBSVCS_Export TAO_AV_Child_Process
// = DESCRIPTION
// Helper class for the child process created in TAO_AV_Endpoint_Process_Strategy
{
public:
TAO_AV_Child_Process ();
int init (int argc, char **argv);
int run (ACE_Time_Value *tv = 0);
protected:
char *stream_endpoint_name_;
int activate_objects (int argc,
char **argv,
CORBA::Environment &env);
int bind_to_naming_service (CORBA::Environment &env);
int register_vdev (CORBA::Environment &env);
int register_stream_endpoint (CORBA::Environment &env);
int register_with_naming_service (CORBA::Environment &env);
int release_semaphore ();
TAO_ORB_Manager orb_manager_;
// The ORB Manager
CosNaming::NamingContext_var naming_context_;
// The root Naming Context of the TAO naming service
T_StreamEndPoint stream_endpoint_;
// The stream endpoint member
T_VDev vdev_;
// The virtual device
};
// ----------------------------------------------------------------------
template <class T_StreamEndpoint, class T_VDev , class T_MediaCtrl>
class TAO_ORBSVCS_Export TAO_AV_Child_Process_A
: public virtual TAO_AV_Child_Process <T_StreamEndpoint, T_VDev, T_MediaCtrl>
// = DESCRIPTION
// Helper class for the child process created in TAO_AV_Child_Process
{
public:
TAO_AV_Child_Process_A ();
};
// ----------------------------------------------------------------------
template <class T_StreamEndpoint, class T_VDev , class T_MediaCtrl>
class TAO_ORBSVCS_Export TAO_AV_Child_Process_B
: public virtual TAO_AV_Child_Process <T_StreamEndpoint, T_VDev, T_MediaCtrl>
// = DESCRIPTION
// Helper class for the child process created in TAO_AV_Child_Process
{
public:
TAO_AV_Child_Process_B ();
};
#endif /* TAO_AV_ENDPOINT_STRATEGY_H */
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