226 lines
7.6 KiB
C++
226 lines
7.6 KiB
C++
|
/*
|
||
|
|
* Copyright (C) 2020 Belousov Oleg
|
||
|
|
*
|
||
|
|
* 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 "dsp_modulate.hpp"
|
||
|
|
#include "sine_table_int8.hpp"
|
||
|
|
#include "portapack_shared_memory.hpp"
|
||
|
|
#include "tonesets.hpp"
|
||
|
|
|
||
|
|
namespace dsp {
|
||
|
|
namespace modulate {
|
||
|
|
|
||
|
|
Modulator::~Modulator() {
|
||
|
|
}
|
||
|
|
|
||
|
|
Mode Modulator::get_mode() {
|
||
|
|
return mode;
|
||
|
|
}
|
||
|
|
|
||
|
|
void Modulator::set_mode(Mode new_mode) {
|
||
|
|
mode = new_mode;
|
||
|
|
}
|
||
|
|
|
||
|
|
void Modulator::set_over(uint32_t new_over) {
|
||
|
|
over = new_over;
|
||
|
|
}
|
||
|
|
|
||
|
|
void Modulator::set_gain_vumeter_beep(float new_audio_gain , bool new_play_beep ) {
|
||
|
|
audio_gain = new_audio_gain ;
|
||
|
|
play_beep = new_play_beep;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
int32_t Modulator::apply_beep(int32_t sample_in, bool& configured_in, uint32_t& new_beep_index, uint32_t& new_beep_timer, TXProgressMessage& new_txprogress_message ) {
|
||
|
|
|
||
|
|
if (play_beep) { // We need to add audio beep sample.
|
||
|
|
if (new_beep_timer) {
|
||
|
|
new_beep_timer--;
|
||
|
|
} else {
|
||
|
|
new_beep_timer = baseband_fs * 0.05; // 50ms
|
||
|
|
|
||
|
|
if (new_beep_index == BEEP_TONES_NB) {
|
||
|
|
configured_in = false;
|
||
|
|
shared_memory.application_queue.push(new_txprogress_message);
|
||
|
|
} else {
|
||
|
|
beep_gen.configure(beep_deltas[new_beep_index], 1.0); // config sequentially the audio beep tone.
|
||
|
|
new_beep_index++;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
sample_in = beep_gen.process(0); // Get sample of the selected sequence of 6 beep tones , and overwrite audio sample. Mix 0%.
|
||
|
|
}
|
||
|
|
return sample_in; // Return audio mic scaled with gain , 8 bit sample or audio beep sample.
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
///
|
||
|
|
|
||
|
|
SSB::SSB() : hilbert() {
|
||
|
|
mode = Mode::LSB;
|
||
|
|
}
|
||
|
|
|
||
|
|
void SSB::execute(const buffer_s16_t& audio, const buffer_c8_t& buffer, bool& configured_in, uint32_t& new_beep_index, uint32_t& new_beep_timer,TXProgressMessage& new_txprogress_message, AudioLevelReportMessage& new_level_message, uint32_t& new_power_acc_count, uint32_t& new_divider ) {
|
||
|
|
// No way to activate correctly the roger beep in this option, Maybe not enough M4 CPU power , Let's block roger beep in SSB selection by now .
|
||
|
|
int32_t sample = 0;
|
||
|
|
int8_t re = 0, im = 0;
|
||
|
|
|
||
|
|
for (size_t counter = 0; counter < buffer.count; counter++) {
|
||
|
|
if (counter % 128 == 0) {
|
||
|
|
float i = 0.0, q = 0.0;
|
||
|
|
|
||
|
|
sample = audio.p[counter / over] >> 2;
|
||
|
|
sample *= audio_gain; // Apply GAIN Scale factor to the audio TX modulation.
|
||
|
|
|
||
|
|
//switch (mode) {
|
||
|
|
//case Mode::LSB:
|
||
|
|
hilbert.execute(sample / 32768.0f, i, q);
|
||
|
|
//case Mode::USB: hilbert.execute(sample / 32768.0f, q, i);
|
||
|
|
//default: break;
|
||
|
|
//}
|
||
|
|
|
||
|
|
i *= 256.0f; // Original 64.0f, now x 4 (+12 dB's SSB BB modulation)
|
||
|
|
q *= 256.0f; // Original 64.0f, now x 4 (+12 dB's SSB BB modulation)
|
||
|
|
switch (mode) {
|
||
|
|
case Mode::LSB: re = q; im = i; break;
|
||
|
|
case Mode::USB: re = i; im = q; break;
|
||
|
|
default: re = 0; im = 0; break;
|
||
|
|
}
|
||
|
|
//re = q;
|
||
|
|
//im = i;
|
||
|
|
//break;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
buffer.p[counter] = { re, im };
|
||
|
|
|
||
|
|
// Update vu-meter bar in the LCD screen.
|
||
|
|
power_acc += (sample < 0) ? -sample : sample; // Power average for UI vu-meter
|
||
|
|
|
||
|
|
if (new_power_acc_count) {
|
||
|
|
new_power_acc_count--;
|
||
|
|
} else { // power_acc_count = 0
|
||
|
|
new_power_acc_count = new_divider;
|
||
|
|
new_level_message.value = power_acc / (new_divider *8); // Why ? . This division is to adj vu-meter sentitivity, to match saturation point to red-muter .
|
||
|
|
shared_memory.application_queue.push(new_level_message);
|
||
|
|
power_acc = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
///
|
||
|
|
|
||
|
|
FM::FM() {
|
||
|
|
mode = Mode::FM;
|
||
|
|
}
|
||
|
|
|
||
|
|
void FM::set_fm_delta(uint32_t new_delta) {
|
||
|
|
fm_delta = new_delta;
|
||
|
|
}
|
||
|
|
|
||
|
|
void FM::set_tone_gen_configure(const uint32_t set_delta, const float set_tone_mix_weight) {
|
||
|
|
tone_gen.configure(set_delta, set_tone_mix_weight);
|
||
|
|
}
|
||
|
|
|
||
|
|
void FM::execute(const buffer_s16_t& audio, const buffer_c8_t& buffer, bool& configured_in, uint32_t& new_beep_index, uint32_t& new_beep_timer, TXProgressMessage& new_txprogress_message, AudioLevelReportMessage& new_level_message, uint32_t& new_power_acc_count, uint32_t& new_divider ) {
|
||
|
|
int32_t sample = 0;
|
||
|
|
int8_t re, im;
|
||
|
|
|
||
|
|
for (size_t counter = 0; counter < buffer.count; counter++) {
|
||
|
|
|
||
|
|
sample = audio.p[counter>>6] >> 8; // sample = audio.p[counter / over] >> 8; (not enough efficient running code, over = 1536000/240000= 64 )
|
||
|
|
sample *= audio_gain; // Apply GAIN Scale factor to the audio TX modulation.
|
||
|
|
|
||
|
|
if (play_beep) {
|
||
|
|
sample = apply_beep(sample, configured_in, new_beep_index, new_beep_timer, new_txprogress_message ); // Apply beep -if selected - atom ,sample by sample.
|
||
|
|
} else {
|
||
|
|
// Update vu-meter bar in the LCD screen.
|
||
|
|
power_acc += (sample < 0) ? -sample : sample; // Power average for UI vu-meter
|
||
|
|
|
||
|
|
if (new_power_acc_count) {
|
||
|
|
new_power_acc_count--;
|
||
|
|
} else { // power_acc_count = 0
|
||
|
|
new_power_acc_count = new_divider;
|
||
|
|
new_level_message.value = power_acc / (new_divider / 4); // Why ? . This division is to adj vu-meter sentitivity, to match saturation point to red-muter .
|
||
|
|
shared_memory.application_queue.push(new_level_message);
|
||
|
|
power_acc = 0;
|
||
|
|
}
|
||
|
|
// TODO: pending to optimize CPU running code.
|
||
|
|
// So far , we can not handle all 3 issues at the same time (vu-meter , CTCSS, beep).
|
||
|
|
sample = tone_gen.process(sample); // Add selected Key_Tone or CTCSS subtone , atom function() , sample by sample.
|
||
|
|
}
|
||
|
|
|
||
|
|
delta = sample * fm_delta; // Modulate FM
|
||
|
|
|
||
|
|
phase += delta;
|
||
|
|
sphase = phase >> 24;
|
||
|
|
|
||
|
|
re = (sine_table_i8[(sphase + 64) & 255]);
|
||
|
|
im = (sine_table_i8[sphase]);
|
||
|
|
|
||
|
|
buffer.p[counter] = { re, im };
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
AM::AM() {
|
||
|
|
mode = Mode::AM;
|
||
|
|
}
|
||
|
|
|
||
|
|
void AM::execute(const buffer_s16_t& audio, const buffer_c8_t& buffer, bool& configured_in, uint32_t& new_beep_index, uint32_t& new_beep_timer, TXProgressMessage& new_txprogress_message, AudioLevelReportMessage& new_level_message, uint32_t& new_power_acc_count, uint32_t& new_divider ) {
|
||
|
|
int32_t sample = 0;
|
||
|
|
int8_t re = 0, im = 0;
|
||
|
|
float q = 0.0;
|
||
|
|
|
||
|
|
for (size_t counter = 0; counter < buffer.count; counter++) {
|
||
|
|
if (counter % 128 == 0) {
|
||
|
|
sample = audio.p[counter / over] >> 2;
|
||
|
|
sample *= audio_gain; // Apply GAIN Scale factor to the audio TX modulation.
|
||
|
|
}
|
||
|
|
|
||
|
|
if (play_beep) {
|
||
|
|
sample = apply_beep(sample, configured_in, new_beep_index, new_beep_timer, new_txprogress_message )<<5; // Apply beep -if selected - atom sample by sample.
|
||
|
|
} else {
|
||
|
|
// Update vu-meter bar in the LCD screen.
|
||
|
|
power_acc += (sample < 0) ? -sample : sample; // Power average for UI vu-meter
|
||
|
|
|
||
|
|
if (new_power_acc_count) {
|
||
|
|
new_power_acc_count--;
|
||
|
|
} else { // power_acc_count = 0
|
||
|
|
new_power_acc_count = new_divider;
|
||
|
|
new_level_message.value = power_acc / (new_divider *8); // Why ?orig / (new_divider / 4); // Why ?
|
||
|
|
shared_memory.application_queue.push(new_level_message);
|
||
|
|
power_acc = 0;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
q = sample / 32768.0f;
|
||
|
|
q *= 256.0f; // Original 64.0f,now x4 (+12 dB's BB_modulation in AM & DSB)
|
||
|
|
switch (mode) {
|
||
|
|
case Mode::AM: re = q + 80; im = q + 80; break; // Original DC add +20_DC_level=carrier,now x4 (+12dB's AM carrier)
|
||
|
|
case Mode::DSB: re = q; im = q; break;
|
||
|
|
default: break;
|
||
|
|
}
|
||
|
|
buffer.p[counter] = { re, im };
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
}
|