mirror of
https://github.com/portapack-mayhem/mayhem-firmware.git
synced 2024-12-14 04:04:34 +00:00
137 lines
3.4 KiB
C++
137 lines
3.4 KiB
C++
/*
|
|
* Copyright (C) 2015 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.
|
|
*/
|
|
|
|
#include "proc_dtmf_tx.hpp"
|
|
#include "portapack_shared_memory.hpp"
|
|
#include "sine_table_int8.hpp"
|
|
//#include "audio_output.hpp"
|
|
#include "event_m4.hpp"
|
|
|
|
#include <cstdint>
|
|
|
|
// 153600 = 1000ms
|
|
//
|
|
|
|
void DTMFTXProcessor::execute(const buffer_c8_t& buffer){
|
|
|
|
// This is called at 1536000/2048 = 750Hz
|
|
// DTMF samplerate = 153600Hz
|
|
|
|
if (!configured) return;
|
|
|
|
//ai = 0;
|
|
for (size_t i = 0; i<buffer.count; i++) {
|
|
|
|
if (!as) {
|
|
as = 10;
|
|
|
|
if (!timer) {
|
|
if (tone) {
|
|
tone = false;
|
|
timer = pause_length * 154; // 153.6
|
|
} else {
|
|
tone = true;
|
|
timer = tone_length * 154; // 153.6
|
|
tone_code = shared_memory.tx_data[tone_idx]; //tone_list[tone_idx];
|
|
if (tone_code == 0xFF) {
|
|
txdone_message.n = 64; // End of list
|
|
shared_memory.application_queue.push(txdone_message);
|
|
configured = false;
|
|
tone = false;
|
|
} else {
|
|
txdone_message.n = tone_idx; // New tone
|
|
shared_memory.application_queue.push(txdone_message);
|
|
|
|
if (tone_code == 'A')
|
|
tone_code = 10;
|
|
else if (tone_code == 'B')
|
|
tone_code = 11;
|
|
else if (tone_code == 'C')
|
|
tone_code = 12;
|
|
else if (tone_code == 'D')
|
|
tone_code = 13;
|
|
else if (tone_code == '#')
|
|
tone_code = 14;
|
|
else if (tone_code == '*')
|
|
tone_code = 15;
|
|
|
|
tone_idx++;
|
|
}
|
|
}
|
|
} else
|
|
timer--;
|
|
|
|
if (tone) {
|
|
sample = sine_table_i8[(tone_a_phase & 0x03FC0000) >> 18] >> 1;
|
|
sample += sine_table_i8[(tone_b_phase & 0x03FC0000) >> 18] >> 1;
|
|
|
|
tone_a_phase += DTMF_LUT[tone_code][0];
|
|
tone_b_phase += DTMF_LUT[tone_code][1];
|
|
} else {
|
|
sample = 0;
|
|
}
|
|
} else {
|
|
as--;
|
|
}
|
|
|
|
// FM
|
|
frq = sample * bw;
|
|
|
|
phase = (phase + frq);
|
|
sphase = phase + (64 << 18);
|
|
|
|
re = (sine_table_i8[(sphase & 0x03FC0000) >> 18]);
|
|
im = (sine_table_i8[(phase & 0x03FC0000) >> 18]);
|
|
|
|
buffer.p[i] = {(int8_t)re, (int8_t)im};
|
|
}
|
|
|
|
//AudioOutput::fill_audio_buffer(preview_audio_buffer, true);
|
|
}
|
|
|
|
void DTMFTXProcessor::on_message(const Message* const msg) {
|
|
const auto message = *reinterpret_cast<const DTMFTXConfigMessage*>(msg);
|
|
|
|
if (message.id == Message::ID::DTMFTXConfig) {
|
|
// 1<<18 = 262144
|
|
// m = (262144 * a) / 1536000
|
|
// a = 262144 / 1536000 (*1000 = 171)
|
|
bw = 171 * (message.bw);
|
|
tone_length = message.tone_length;
|
|
pause_length = message.pause_length;
|
|
as = 0;
|
|
//memcpy(tone_list, shared_memory.tx_data, 32);
|
|
//tone_list[31] = 0;
|
|
tone = false;
|
|
timer = 0;
|
|
tone_idx = 0;
|
|
|
|
configured = true;
|
|
}
|
|
}
|
|
|
|
int main() {
|
|
EventDispatcher event_dispatcher { std::make_unique<DTMFTXProcessor>() };
|
|
event_dispatcher.run();
|
|
return 0;
|
|
}
|