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Copy pathDelayedConjTask.cpp
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110 lines (93 loc) · 2.6 KB
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//
// DelayedConjTask.cpp: Product by the delayed conjugate
// Copyright (C) 2022 Gonzalo José Carracedo Carballal
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this program. If not, see
// <http://www.gnu.org/licenses/>
//
#include <DelayedConjTask.h>
#include <Suscan/Library.h>
#define SIGDIGGER_DELAYEDCONJ_BLOCK_LENGTH 4096
DelayedConjTask::DelayedConjTask(
const SUCOMPLEX *data,
SUCOMPLEX *destination,
size_t length,
SUSCOUNT delay,
QObject *parent) :
Suscan::CancellableTask(parent)
{
this->origin = data;
this->destination = destination;
this->length = length;
this->delay = delay;
if (delay == 0)
throw Suscan::Exception("Delay is zero samples\n");
this->delayLine.resize(delay);
this->setProgress(0);
this->setStatus("Processing...");
}
static inline bool
isinf(SUCOMPLEX val)
{
return isinf(SU_C_REAL(val)) || isinf(SU_C_IMAG(val));
}
static inline bool
isnan(SUCOMPLEX val)
{
return isnan(SU_C_REAL(val)) || isnan(SU_C_IMAG(val));
}
bool
DelayedConjTask::work(void)
{
size_t amount = this->length - this->p;
size_t p = this->p;
SUCOMPLEX x, prev;
SUSCOUNT delay = this->delay;
SUFLOAT kinv;
if (amount > SIGDIGGER_DELAYEDCONJ_BLOCK_LENGTH)
amount = SIGDIGGER_DELAYEDCONJ_BLOCK_LENGTH;
while (amount--) {
x = this->origin[p];
if (p < delay) {
this->destination[p] = 0;
} else {
prev = this->delayLine[q];
kinv = 1. / (SU_C_ABS(prev) + 1e-3);
this->destination[p] = kinv * x * SU_C_CONJ(prev);
}
this->delayLine[q++] = x;
if (q == delay)
q = 0;
++p;
}
this->p = p;
this->setStatus("Processing ("
+ QString::number(p)
+ "/"
+ QString::number(this->length)
+ ")...");
this->setProgress(static_cast<qreal>(p) / static_cast<qreal>(this->length));
if (this->p < this->length)
return true;
emit done();
return false;
}
void
DelayedConjTask::cancel(void)
{
emit cancelled();
}
DelayedConjTask::~DelayedConjTask()
{
}