RtpSender.h

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//
//  RemoteIO.h -- CSL I/O Port for sending sample buffers out over UDP or TCP-IP sockets
//      (in response to request packets sent from a RtpReceiver client)
//  See the copyright notice and acknowledgment of authors in the file COPYRIGHT
//
// This is an output driver that receives call-backs from a remote client over a network socket
// and calls on its DSP graph to generate a buffer of samples.
// See the comment in RtpReceiver.h for a description of the packet format
//
// Note to self: The RTP sender is triggered from the nextBuffer call
//

#ifndef CSL_RTPSENDER_H
#define CSL_RTPSENDER_H

#include "CSL_Core.h"
//#include "CslRtpIncludes.h"
#include "CslRtpSession.h"
#include "ThreadUtilities.h"

namespace csl {

// the RemoteIO class

// TODO: This should be a variable that can be adjusted or set on the constructor
#define RTP_BUFFER_SIZE (4410)

// So this really isn't an "effect", but you connect it serially in the existing signal
// chain, thus it conforms to the Effect interface

class RtpSender : public Effect, public CslRtpSession {

public:                     // These data members are public so that they can be used from the thread call
    RtpSender(unsigned chans = 1);
    ~RtpSender();
    
                    // The work method...
    void nextBuffer(Buffer &outputBuffer, unsigned outBufNum) throw (Exception);

    bool createRtpSession();

    bool addRtpDestination(char * remoteIP, unsigned short remotePort);
    bool removeRtpDestination();
    void printError(int rtperr);

protected:
    unsigned mNumChans;     // The default # of channels sent over RTP
    SynchPthread mRtpMutex;

    unsigned mBufferFrames;
    
    unsigned mRemotePort;                       ///< The network port I send to
    unsigned mLocalPort;                            ///< The network port I listen on
    unsigned mRemoteIP;                         ///< The IP address of the client in host byte order
    unsigned mLocalIP;                      ///< My IP address in host byte order
    string mCName;                          ///< The CName of my computer
    string mEmail;                          ///< My email I want registered with RTP
    int mLastPacketNumber;                  ///< The RTP ID of the last packet sent (or -1 if none)
    int mPayloadType;                       ///< The RTP payload type we are sending

    RTPUDPv4TransmissionParams  * mTransparams; // We are using UDP over IPv4
    RTPSessionParams            * mSessparams;
    RTPIPv4Address              * mAddress;

#ifdef DO_TIMING                    // This is for the performance timing code
    struct timeval mThen, mNow;     // Used for getting the real time
    long mTimeVals, mThisSec;           // Used for CPU usage statistics
    long mTimeSum;
#endif


};

}

#endif