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/*---------------------------------------------------------------
* Copyright (c) 2017
* Broadcom Corporation
* All Rights Reserved.
*---------------------------------------------------------------
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated
* documentation files (the "Software"), to deal in the Software
* without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute,
* sublicense, and/or sell copies of the Software, and to permit
* persons to whom the Software is furnished to do
* so, subject to the following conditions:
*
*
* Redistributions of source code must retain the above
* copyright notice, this list of conditions and
* the following disclaimers.
*
*
* Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimers in the documentation and/or other materials
* provided with the distribution.
*
*
* Neither the name of Broadcom Coporation,
* nor the names of its contributors may be used to endorse
* or promote products derived from this Software without
* specific prior written permission.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE CONTIBUTORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
* ________________________________________________________________
*
* isochronous.hpp
* Suppport for isochonronous traffic testing
*
* by Robert J. McMahon (rjmcmahon@rjmcmahon.com, bob.mcmahon@broadcom.com)
* -------------------------------------------------------------------
*/
#ifndef ISOCHRONOUS_H
#define ISOCHRONOUS_H
#include <time.h>
#include "Settings.hpp"
#include "Timestamp.hpp"
/* ------------------------------------------------------------------- */
namespace Isochronous {
class FrameCounter {
public :
FrameCounter(double, const Timestamp& start);
FrameCounter(double);
~FrameCounter();
unsigned int get(void) const;
unsigned int get(long *);
unsigned int get(const Timestamp&) const;
unsigned int period_us(void);
unsigned int wait_tick(long *sched_err);
unsigned int wait_sync(long sec, long usec);
long getSecs(void);
long getUsecs(void);
void reset(void);
Timestamp next_slot(void);
unsigned int slip;
private :
double frequency;
Timestamp startTime;
Timestamp nextslotTime;
unsigned int period; // units microseconds or 100 ns
unsigned int lastcounter;
unsigned int slot_counter;
#ifdef WIN32
int mySetWaitableTimer (long delay_time);
HANDLE my_timer; // Timer handle
LARGE_INTEGER delay; // units is 100 nanoseconds
#endif
}; // end class FrameCounter
}
#endif // ISOCHRONOUS_H
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