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/* -*- C++ -*- */
//=============================================================================
/**
* @file distributer.h
*
* $Id$
*
* Process to receive data from the sender and send it to the
* receiver.
*
*
* @author Yamuna Krishnamurthy <yamuna@cs.wustl.edu>
*/
//=============================================================================
#include "orbsvcs/Naming/Naming_Client.h"
#include "orbsvcs/AV/AVStreams_i.h"
#include "orbsvcs/AV/Endpoint_Strategy.h"
#include "orbsvcs/AV/Policy.h"
/**
* @class Distributer_Receiver_Callback
*
* @brief Application defined callback object.
*
* AVStreams calls this class when data shows up from a sender.
*/
class Distributer_Receiver_Callback : public TAO_AV_Callback
{
public:
/// Constructor.
Distributer_Receiver_Callback (void);
// Method that is called when there is data to be received from a
// sender.
int receive_frame (ACE_Message_Block *frame,
TAO_AV_frame_info *frame_info,
const ACE_Addr &peer_address);
// Called when the sender is done sending data and wants to close
// down the connection.
int handle_destroy (void);
private:
/// Count of the frames passing through us.
int frame_count_;
};
/**
* @class Distributer_Receiver_StreamEndPoint
*
* @brief Application defined stream endpoint object.
*
* AVStreams calls this class during connection setup.
*/
class Distributer_Receiver_StreamEndPoint : public TAO_Server_StreamEndPoint
{
public:
// Create a receiver application callback.
int get_callback (const char *flowname,
TAO_AV_Callback *&callback);
private:
/// Receiver application callback.
Distributer_Receiver_Callback callback_;
};
/**
* @class Distributer_Sender_StreamEndPoint
*
* @brief Defines a sender stream endpoint.
*/
class Distributer_Sender_StreamEndPoint : public TAO_Client_StreamEndPoint
{
public:
/// Create the application callback and return its handle to
/// AVStreams for further application callbacks.
int get_callback (const char *flowname,
TAO_AV_Callback *&callback);
/// Set protocol object corresponding to the transport protocol
/// chosen.
int set_protocol_object (const char *flowname,
TAO_AV_Protocol_Object *object);
protected:
/// Application callback.
TAO_AV_Callback callback_;
};
typedef TAO_AV_Endpoint_Reactive_Strategy_A
<Distributer_Sender_StreamEndPoint,
TAO_VDev,
AV_Null_MediaCtrl>
SENDER_ENDPOINT_STRATEGY;
typedef TAO_AV_Endpoint_Reactive_Strategy_B
<Distributer_Receiver_StreamEndPoint,
TAO_VDev,
AV_Null_MediaCtrl>
RECEIVER_ENDPOINT_STRATEGY;
/**
* @class Distributer
*
* @brief Distributer Application.
*
* The distributer is the intermediate receiver that receives
* data from the sender and forwards to a receiver.
*/
class Distributer
{
public:
/// Constructor
Distributer (void);
/// Destructor.
~Distributer (void);
/// Initialize data components.
int init (int argc,
ACE_TCHAR *argv[]);
/// Resolve the reference of the mmdevice from the naming service.
void bind_to_mmdevice (AVStreams::MMDevice_ptr &mmdevice,
const ACE_CString &mmdevice_name);
/// Get the stream control of the receiver
TAO_StreamCtrl *receiver_streamctrl (void);
/// Accessor methods to set/get our sender protocol object
int sender_protocol_object (TAO_AV_Protocol_Object *object);
TAO_AV_Protocol_Object *sender_protocol_object (void);
// Flag to know when we are done.
int done (void) const;
void done (int);
protected:
/// The Naming Service client.
TAO_Naming_Client naming_client_;
/// The sender endpoint strategy.
SENDER_ENDPOINT_STRATEGY sender_endpoint_strategy_;
/// The receiver endpoint strategy.
RECEIVER_ENDPOINT_STRATEGY receiver_endpoint_strategy_;
/// The distributer receiver multimedia device
TAO_MMDevice* distributer_receiver_mmdevice_;
/// The distributer receiver multimedia device
TAO_MMDevice* distributer_sender_mmdevice_;
/// The receiver MMDevice.
AVStreams::MMDevice_var receiver_mmdevice_;
/// The sender MMDevice.
AVStreams::MMDevice_var sender_mmdevice_;
/// The sender protocol object
TAO_AV_Protocol_Object *sender_protocol_object_;
/// Stream controller for the receivers
TAO_StreamCtrl* receiver_streamctrl_;
/// Selected protocol - default is UDP
ACE_CString protocol_;
/// Flag to know when we are done.
int done_;
};
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