portapack-mayhem/firmware/baseband/proc_wfm_audio.hpp
2016-07-28 05:25:33 +02:00

92 lines
2.6 KiB
C++

/*
* Copyright (C) 2014 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 __PROC_WFM_AUDIO_H__
#define __PROC_WFM_AUDIO_H__
#include "baseband_processor.hpp"
#include "baseband_thread.hpp"
#include "rssi_thread.hpp"
#include "dsp_decimate.hpp"
#include "dsp_demodulate.hpp"
#include "audio_output.hpp"
#include "spectrum_collector.hpp"
class WidebandFMAudio : public BasebandProcessor {
public:
void execute(const buffer_c8_t& buffer) override;
void on_message(const Message* const message) override;
private:
static constexpr size_t baseband_fs = 3072000;
static constexpr auto spectrum_rate_hz = 50.0f;
BasebandThread baseband_thread { baseband_fs, this, NORMALPRIO + 20, baseband::Direction::Receive };
RSSIThread rssi_thread { NORMALPRIO + 10 };
std::array<complex16_t, 512> dst;
const buffer_c16_t dst_buffer {
dst.data(),
dst.size()
};
const buffer_s16_t work_audio_buffer {
(int16_t*)dst.data(),
sizeof(dst) / sizeof(int16_t)
};
std::array<int16_t, 32> pwm;
const buffer_s16_t pwmrssi_audio_buffer {
(int16_t*)pwm.data(),
sizeof(pwm) / sizeof(int16_t)
};
dsp::decimate::FIRC8xR16x24FS4Decim4 decim_0;
dsp::decimate::FIRC16xR16x16Decim2 decim_1;
uint32_t channel_filter_pass_f = 0;
uint32_t channel_filter_stop_f = 0;
dsp::demodulate::FM demod;
dsp::decimate::DecimateBy2CIC4Real audio_dec_1;
dsp::decimate::DecimateBy2CIC4Real audio_dec_2;
dsp::decimate::FIR64AndDecimateBy2Real audio_filter;
AudioOutput audio_output;
SpectrumCollector channel_spectrum;
size_t spectrum_interval_samples = 0;
size_t spectrum_samples = 0;
unsigned int c, synth_acc = 0;
bool pwmrssi_enabled = false;
uint32_t pwmrssi_freq;
uint32_t pwmrssi_avg;
bool configured { false };
void pwmrssi_config(const PWMRSSIConfigureMessage& message);
void configure(const WFMConfigureMessage& message);
void capture_config(const CaptureConfigMessage& message);
};
#endif/*__PROC_WFM_AUDIO_H__*/