Permalink
Find file
Fetching contributors…
Cannot retrieve contributors at this time
57 lines (51 sloc) 1.65 KB
/*
* Copyright (C) 2015, Mike Walters <mike@flomp.net>
* Copyright (C) 2015, Jared Boone <jared@sharebrained.com>
*
* 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/>.
*/
#pragma once
#include <complex>
#include "samplesource.h"
class SampleAdapter {
public:
virtual size_t sampleSize() = 0;
virtual void copyRange(const void* const src, off_t start, off_t length, std::complex<float>* const dest) = 0;
};
class InputSource : public SampleSource<std::complex<float>>
{
private:
FILE *inputFile = nullptr;
off_t fileSize = 0;
off_t sampleCount = 0;
off_t sampleRate = 0;
void *mmapData = nullptr;
std::unique_ptr<SampleAdapter> sampleAdapter;
public:
InputSource();
~InputSource();
void cleanup();
void openFile(const char *filename);
std::unique_ptr<std::complex<float>[]> getSamples(off_t start, off_t length);
off_t count() {
return sampleCount;
};
void setSampleRate(off_t rate);
off_t rate();
float relativeBandwidth() {
return 1;
}
};