mirror of
https://github.com/miek/inspectrum.git
synced 2026-02-20 01:31:35 +01:00
e38703c4ae
On OS X the `off_t` claims to be a long long, and the definition of `min` complains about conflicting types.
62 lines
2.0 KiB
C++
62 lines
2.0 KiB
C++
/*
|
|
* Copyright (C) 2015, Mike Walters <mike@flomp.net>
|
|
*
|
|
* This file is part of inspectrum.
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU 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 General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include <QMutexLocker>
|
|
#include <string.h>
|
|
#include "samplebuffer.h"
|
|
|
|
template <typename Tin, typename Tout>
|
|
SampleBuffer<Tin, Tout>::SampleBuffer(SampleSource<Tin> *src) : src(src)
|
|
{
|
|
src->subscribe(this);
|
|
}
|
|
|
|
template <typename Tin, typename Tout>
|
|
SampleBuffer<Tin, Tout>::~SampleBuffer()
|
|
{
|
|
src->unsubscribe(this);
|
|
}
|
|
|
|
template <typename Tin, typename Tout>
|
|
std::unique_ptr<Tout[]> SampleBuffer<Tin, Tout>::getSamples(off_t start, off_t length)
|
|
{
|
|
// TODO: base this on the actual history required
|
|
auto history = std::min(start, (off_t)256);
|
|
auto samples = src->getSamples(start - history, length + history);
|
|
if (samples == nullptr)
|
|
return nullptr;
|
|
|
|
std::unique_ptr<Tout[]> temp(new Tout[history + length]);
|
|
std::unique_ptr<Tout[]> dest(new Tout[length]);
|
|
QMutexLocker ml(&mutex);
|
|
work(samples.get(), temp.get(), history + length, start);
|
|
memcpy(dest.get(), temp.get() + history, length * sizeof(Tout));
|
|
return dest;
|
|
}
|
|
|
|
template <typename Tin, typename Tout>
|
|
void SampleBuffer<Tin, Tout>::invalidateEvent()
|
|
{
|
|
SampleSource<Tout>::invalidate();
|
|
}
|
|
|
|
template class SampleBuffer<std::complex<float>, std::complex<float>>;
|
|
template class SampleBuffer<std::complex<float>, float>;
|
|
template class SampleBuffer<float, float>;
|