mirror of
https://github.com/eried/portapack-mayhem.git
synced 2024-09-23 09:36:01 +00:00
6ac911feb7
Added wav file title (INFO chunk) display in soundboard UI Added CTCSS frequency next to PL code Increased CTCSS tone amplitude Added Family Radio Service channels file FRS.TXT
108 lines
2.8 KiB
C++
108 lines
2.8 KiB
C++
/*
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* Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
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* Copyright (C) 2016 Furrtek
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*
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* This file is part of PortaPack.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street,
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* Boston, MA 02110-1301, USA.
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*/
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#include "proc_audiotx.hpp"
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#include "portapack_shared_memory.hpp"
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#include "sine_table_int8.hpp"
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//#include "audio_output.hpp"
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#include "event_m4.hpp"
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#include <cstdint>
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void AudioTXProcessor::execute(const buffer_c8_t& buffer){
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// This is called at 1536000/2048 = 750Hz
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if (!configured) return;
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for (size_t i = 0; i<buffer.count; i++) {
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// Audio preview sample generation @ 1536000/divider
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if (!as) {
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as = divider;
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audio_fifo.out(out_sample);
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sample = (int32_t)out_sample;
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//preview_audio_buffer.p[ai++] = sample << 8;
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if ((audio_fifo.len() < 512) && (asked == false)) {
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// Ask application to fill up fifo
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sigmessage.signaltype = 1;
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shared_memory.application_queue.push(sigmessage);
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asked = true;
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}
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} else {
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as--;
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}
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if (ctcss_enabled) {
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ctcss_sample = sine_table_i8[(ctcss_phase & 0xFF000000U) >> 24];
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sample_mixed = ((sample * 205) + (ctcss_sample * 50)) / 256; // ~20%
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ctcss_phase += ctcss_phase_inc;
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} else {
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sample_mixed = sample;
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}
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// FM
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delta = sample_mixed * fm_delta;
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phase += delta;
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sphase = phase + (64 << 24);
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re = (sine_table_i8[(sphase & 0xFF000000U) >> 24]);
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im = (sine_table_i8[(phase & 0xFF000000U) >> 24]);
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buffer.p[i] = {re, im};
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}
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//AudioOutput::fill_audio_buffer(preview_audio_buffer, true);
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}
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void AudioTXProcessor::on_message(const Message* const msg) {
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const auto message = *reinterpret_cast<const AudioTXConfigMessage*>(msg);
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switch(msg->id) {
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case Message::ID::AudioTXConfig:
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fm_delta = message.fm_delta * (0xFFFFFFULL / 1536000);
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divider = message.divider;
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ctcss_enabled = message.ctcss_enabled;
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ctcss_phase_inc = message.ctcss_phase_inc;
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as = 0;
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configured = true;
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break;
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case Message::ID::FIFOData:
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audio_fifo.in(static_cast<const FIFODataMessage*>(msg)->data, 512);
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asked = false;
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break;
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default:
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break;
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}
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}
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int main() {
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EventDispatcher event_dispatcher { std::make_unique<AudioTXProcessor>() };
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event_dispatcher.run();
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return 0;
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}
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