spikegen_from_vector.cpp

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/* * Copyright (c) 2016 Regents of the University of California. All rights reserved.
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*    documentation and/or other materials provided with the distribution.
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* 3. The names of its contributors may not be used to endorse or promote
*    products derived from this software without specific prior written
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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*
* *********************************************************************************************** *
* CARLsim
* created by: (MDR) Micah Richert, (JN) Jayram M. Nageswaran
* maintained by:
* (MA) Mike Avery <averym@uci.edu>
* (MB) Michael Beyeler <mbeyeler@uci.edu>,
* (KDC) Kristofor Carlson <kdcarlso@uci.edu>
* (TSC) Ting-Shuo Chou <tingshuc@uci.edu>
* (HK) Hirak J Kashyap <kashyaph@uci.edu>
*
* CARLsim v1.0: JM, MDR
* CARLsim v2.0/v2.1/v2.2: JM, MDR, MA, MB, KDC
* CARLsim3: MB, KDC, TSC
* CARLsim4: TSC, HK
* CARLsim5: HK, JX, KC
* CARLsim6: LN, JX, KC, KW
*
* CARLsim available from http://socsci.uci.edu/~jkrichma/CARLsim/
* Ver 12/31/2016
*/
#include <spikegen_from_vector.h>

#include <user_errors.h>    // fancy error messages
#include <sstream>          // std::stringstream

SpikeGeneratorFromVector::SpikeGeneratorFromVector(std::vector<int> spkTimes) {
    spkTimes_ = spkTimes;
    size_ = int(spkTimes.size());
    currentIndex_ = 0;

    checkSpikeVector();
}

int SpikeGeneratorFromVector::nextSpikeTime(CARLsim* sim, int grpId, int nid, int currentTime, int lastScheduledSpikeTime, int endOfTimeSlice) {

    // schedule spike if vector index valid and spike within scheduling time slice
    if (currentIndex_ < size_ && spkTimes_[currentIndex_] < endOfTimeSlice) {
        return spkTimes_[currentIndex_++];
    }

    return -1; // -1: large positive number
}

void SpikeGeneratorFromVector::checkSpikeVector() {
    UserErrors::assertTrue(size_>0,UserErrors::CANNOT_BE_ZERO, "SpikeGeneratorFromVector", "Vector size");
    for (int i=0; i<size_; i++) {
        std::stringstream var; var << "spkTimes[" << currentIndex_ << "]";
        UserErrors::assertTrue(spkTimes_[i]>0,UserErrors::CANNOT_BE_ZERO, "SpikeGeneratorFromVector", var.str());
    }   
}