mayhem-firmware/firmware/baseband/proc_wfm_audio.hpp
furrtek b813b32593 Added an audio FFT view in Wideband FM receive
Tried speeding up fill_rectangle for clearing the waveform widget
2018-05-21 18:46:48 +01:00

98 lines
3.0 KiB
C++

/*
* Copyright (C) 2014 Jared Boone, ShareBrained Technology, Inc.
* Copyright (C) 2016 Furrtek
*
* 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_types.hpp"
#include "dsp_decimate.hpp"
#include "dsp_demodulate.hpp"
#include "block_decimator.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<complex16_t, 64> complex_audio { };
const buffer_c16_t complex_audio_buffer {
complex_audio.data(),
complex_audio.size()
};
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 { };
// For fs=96kHz FFT streaming
BlockDecimator<complex16_t, 256> audio_spectrum_decimator { 1 };
AudioSpectrum fifo_data[1 << AudioSpectrumConfigMessage::fifo_k] { };
AudioSpectrumFIFO fifo { fifo_data, AudioSpectrumConfigMessage::fifo_k };
std::array<std::complex<float>, 256> audio_spectrum { };
uint32_t refresh_timer { 0 };
uint32_t fft_stage { 0 };
SpectrumCollector channel_spectrum { };
size_t spectrum_interval_samples = 0;
size_t spectrum_samples = 0;
bool configured { false };
void configure(const WFMConfigureMessage& message);
void capture_config(const CaptureConfigMessage& message);
void post_message(const buffer_c16_t& data);
};
#endif/*__PROC_WFM_AUDIO_H__*/