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/*
* Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
*
* This file is part of PortaPack.
*
* 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 2, 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; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street,
* Boston, MA 02110-1301, USA.
*/
#ifndef __SPECTRUM_COLLECTOR_H__
#define __SPECTRUM_COLLECTOR_H__
#define ARRAY_ELEMENTS(x) (sizeof(x) / sizeof(x[0]))
/* sizeof() compile-time operator that returns #bytes of (data type). We used it to get #elements_array */
#include "dsp_types.hpp"
#include "complex.hpp"
#include "block_decimator.hpp"
#include <cstdint>
#include <array>
#include "message.hpp"
class SpectrumCollector {
public:
void on_message(const Message* const message);
void set_decimation_factor(const size_t decimation_factor);
void feed(
const buffer_c16_t& channel,
const int32_t filter_low_frequency,
const int32_t filter_high_frequency,
const int32_t filter_transition
);
private:
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BlockDecimator<complex16_t, 256> channel_spectrum_decimator { 1 };
ChannelSpectrum fifo_data[1 << ChannelSpectrumConfigMessage::fifo_k] { };
ChannelSpectrumFIFO fifo { fifo_data, ChannelSpectrumConfigMessage::fifo_k };
volatile bool channel_spectrum_request_update { false };
bool streaming { false };
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std::array<std::complex<float>, 256> channel_spectrum { };
uint32_t channel_spectrum_sampling_rate { 0 };
int32_t channel_filter_low_frequency { 0 };
int32_t channel_filter_high_frequency { 0 };
int32_t channel_filter_transition { 0 };
void post_message(const buffer_c16_t& data);
void set_state(const SpectrumStreamingConfigMessage& message);
void start();
void stop();
void update();
};
#endif/*__SPECTRUM_COLLECTOR_H__*/