mirror of
https://github.com/eried/portapack-mayhem.git
synced 2025-08-03 03:56:44 -04:00
Formatted code (#1007)
* Updated style * Updated files * fixed new line * Updated spacing * File fix WIP * Updated to clang 13 * updated comment style * Removed old comment code
This commit is contained in:
jLynx
GitHub
parent
7aca7ce74d
commit
033c4e9a5b
599 changed files with 70746 additions and 66896 deletions
|
|
@ -30,167 +30,165 @@
|
|||
#include <cstdint>
|
||||
|
||||
void WidebandFMAudio::execute(const buffer_c8_t& buffer) {
|
||||
if( !configured ) {
|
||||
return;
|
||||
}
|
||||
|
||||
const auto decim_0_out = decim_0.execute(buffer, dst_buffer);
|
||||
const auto channel = decim_1.execute(decim_0_out, dst_buffer);
|
||||
if (!configured) {
|
||||
return;
|
||||
}
|
||||
|
||||
// TODO: Feed channel_stats post-decimation data?
|
||||
feed_channel_stats(channel);
|
||||
const auto decim_0_out = decim_0.execute(buffer, dst_buffer);
|
||||
const auto channel = decim_1.execute(decim_0_out, dst_buffer);
|
||||
|
||||
spectrum_samples += channel.count;
|
||||
if( spectrum_samples >= spectrum_interval_samples ) {
|
||||
spectrum_samples -= spectrum_interval_samples;
|
||||
channel_spectrum.feed(channel, channel_filter_low_f, channel_filter_high_f, channel_filter_transition);
|
||||
}
|
||||
// TODO: Feed channel_stats post-decimation data?
|
||||
feed_channel_stats(channel);
|
||||
|
||||
/* 384kHz complex<int16_t>[256]
|
||||
* -> FM demodulation
|
||||
* -> 384kHz int16_t[256] */
|
||||
/* TODO: To improve adjacent channel rejection, implement complex channel filter:
|
||||
* pass < +/- 100kHz, stop > +/- 200kHz
|
||||
*/
|
||||
spectrum_samples += channel.count;
|
||||
if (spectrum_samples >= spectrum_interval_samples) {
|
||||
spectrum_samples -= spectrum_interval_samples;
|
||||
channel_spectrum.feed(channel, channel_filter_low_f, channel_filter_high_f, channel_filter_transition);
|
||||
}
|
||||
|
||||
auto audio_oversampled = demod.execute(channel, work_audio_buffer);
|
||||
/* 384kHz complex<int16_t>[256]
|
||||
* -> FM demodulation
|
||||
* -> 384kHz int16_t[256] */
|
||||
/* TODO: To improve adjacent channel rejection, implement complex channel filter:
|
||||
* pass < +/- 100kHz, stop > +/- 200kHz
|
||||
*/
|
||||
|
||||
/* 384kHz int16_t[256]
|
||||
* -> 4th order CIC decimation by 2, gain of 1
|
||||
* -> 192kHz int16_t[128] */
|
||||
auto audio_4fs = audio_dec_1.execute(audio_oversampled, work_audio_buffer);
|
||||
auto audio_oversampled = demod.execute(channel, work_audio_buffer);
|
||||
|
||||
/* 192kHz int16_t[128]
|
||||
* -> 4th order CIC decimation by 2, gain of 1
|
||||
* -> 96kHz int16_t[64] */
|
||||
auto audio_2fs = audio_dec_2.execute(audio_4fs, work_audio_buffer);
|
||||
|
||||
// Input: 96kHz int16_t[64]
|
||||
// audio_spectrum_decimator piles up 256 samples before doing FFT computation
|
||||
// This sends an AudioSpectrum every: sample rate/buffer size/refresh period = 3072000/2048/50 = 30 Hz
|
||||
// When audio_spectrum_timer expires, the audio spectrum computation is triggered
|
||||
|
||||
// 0~3: feed continuous audio
|
||||
// 4~31: ignore, wrap at 31
|
||||
|
||||
audio_spectrum_timer++;
|
||||
if (audio_spectrum_timer == 50) {
|
||||
audio_spectrum_timer = 0;
|
||||
audio_spectrum_state = FEED;
|
||||
}
|
||||
|
||||
switch (audio_spectrum_state) {
|
||||
case FEED:
|
||||
// Convert audio to "complex" just so the FFT can be done :/
|
||||
for (size_t i = 0; i < 64; i++) {
|
||||
complex_audio[i] = { (int16_t)(work_audio_buffer.p[i] / 32), (int16_t)0 };
|
||||
}
|
||||
audio_spectrum_decimator.feed(
|
||||
complex_audio_buffer,
|
||||
[this](const buffer_c16_t& data) {
|
||||
this->post_message(data);
|
||||
}
|
||||
);
|
||||
break;
|
||||
case FFT:
|
||||
// Spread the FFT workload in time to avoid making the audio skip
|
||||
// "8" comes from the log2() of the size of audio_spectrum: log2(256) = 8
|
||||
if (fft_step < 8) {
|
||||
fft_c_preswapped(audio_spectrum, fft_step, fft_step + 1);
|
||||
fft_step++;
|
||||
} else {
|
||||
const size_t spectrum_end = spectrum.db.size();
|
||||
for(size_t i=0; i<spectrum_end; i++) {
|
||||
//const auto corrected_sample = spectrum_window_hamming_3(audio_spectrum, i);
|
||||
const auto corrected_sample = audio_spectrum[i];
|
||||
const auto mag2 = magnitude_squared(corrected_sample * (1.0f / 32768.0f));
|
||||
const float db = mag2_to_dbv_norm(mag2);
|
||||
constexpr float mag_scale = 5.0f;
|
||||
const unsigned int v = (db * mag_scale) + 255.0f;
|
||||
spectrum.db[i] = std::max(0U, std::min(255U, v));
|
||||
}
|
||||
AudioSpectrumMessage message { &spectrum };
|
||||
shared_memory.application_queue.push(message);
|
||||
audio_spectrum_state = IDLE;
|
||||
}
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
|
||||
/* 96kHz int16_t[64]
|
||||
* -> FIR filter, <15kHz (0.156fs) pass, >19kHz (0.198fs) stop, gain of 1
|
||||
* -> 48kHz int16_t[32] */
|
||||
auto audio = audio_filter.execute(audio_2fs, work_audio_buffer);
|
||||
/* 384kHz int16_t[256]
|
||||
* -> 4th order CIC decimation by 2, gain of 1
|
||||
* -> 192kHz int16_t[128] */
|
||||
auto audio_4fs = audio_dec_1.execute(audio_oversampled, work_audio_buffer);
|
||||
|
||||
/* -> 48kHz int16_t[32] */
|
||||
audio_output.write(audio);
|
||||
|
||||
/* 192kHz int16_t[128]
|
||||
* -> 4th order CIC decimation by 2, gain of 1
|
||||
* -> 96kHz int16_t[64] */
|
||||
auto audio_2fs = audio_dec_2.execute(audio_4fs, work_audio_buffer);
|
||||
|
||||
// Input: 96kHz int16_t[64]
|
||||
// audio_spectrum_decimator piles up 256 samples before doing FFT computation
|
||||
// This sends an AudioSpectrum every: sample rate/buffer size/refresh period = 3072000/2048/50 = 30 Hz
|
||||
// When audio_spectrum_timer expires, the audio spectrum computation is triggered
|
||||
|
||||
// 0~3: feed continuous audio
|
||||
// 4~31: ignore, wrap at 31
|
||||
|
||||
audio_spectrum_timer++;
|
||||
if (audio_spectrum_timer == 50) {
|
||||
audio_spectrum_timer = 0;
|
||||
audio_spectrum_state = FEED;
|
||||
}
|
||||
|
||||
switch (audio_spectrum_state) {
|
||||
case FEED:
|
||||
// Convert audio to "complex" just so the FFT can be done :/
|
||||
for (size_t i = 0; i < 64; i++) {
|
||||
complex_audio[i] = {(int16_t)(work_audio_buffer.p[i] / 32), (int16_t)0};
|
||||
}
|
||||
audio_spectrum_decimator.feed(
|
||||
complex_audio_buffer,
|
||||
[this](const buffer_c16_t& data) {
|
||||
this->post_message(data);
|
||||
});
|
||||
break;
|
||||
case FFT:
|
||||
// Spread the FFT workload in time to avoid making the audio skip
|
||||
// "8" comes from the log2() of the size of audio_spectrum: log2(256) = 8
|
||||
if (fft_step < 8) {
|
||||
fft_c_preswapped(audio_spectrum, fft_step, fft_step + 1);
|
||||
fft_step++;
|
||||
} else {
|
||||
const size_t spectrum_end = spectrum.db.size();
|
||||
for (size_t i = 0; i < spectrum_end; i++) {
|
||||
// const auto corrected_sample = spectrum_window_hamming_3(audio_spectrum, i);
|
||||
const auto corrected_sample = audio_spectrum[i];
|
||||
const auto mag2 = magnitude_squared(corrected_sample * (1.0f / 32768.0f));
|
||||
const float db = mag2_to_dbv_norm(mag2);
|
||||
constexpr float mag_scale = 5.0f;
|
||||
const unsigned int v = (db * mag_scale) + 255.0f;
|
||||
spectrum.db[i] = std::max(0U, std::min(255U, v));
|
||||
}
|
||||
AudioSpectrumMessage message{&spectrum};
|
||||
shared_memory.application_queue.push(message);
|
||||
audio_spectrum_state = IDLE;
|
||||
}
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
|
||||
/* 96kHz int16_t[64]
|
||||
* -> FIR filter, <15kHz (0.156fs) pass, >19kHz (0.198fs) stop, gain of 1
|
||||
* -> 48kHz int16_t[32] */
|
||||
auto audio = audio_filter.execute(audio_2fs, work_audio_buffer);
|
||||
|
||||
/* -> 48kHz int16_t[32] */
|
||||
audio_output.write(audio);
|
||||
}
|
||||
|
||||
void WidebandFMAudio::post_message(const buffer_c16_t& data) {
|
||||
// This is called when audio_spectrum_decimator is filled up to 256 samples
|
||||
fft_swap(data, audio_spectrum);
|
||||
audio_spectrum_state = FFT;
|
||||
fft_step = 0;
|
||||
// This is called when audio_spectrum_decimator is filled up to 256 samples
|
||||
fft_swap(data, audio_spectrum);
|
||||
audio_spectrum_state = FFT;
|
||||
fft_step = 0;
|
||||
}
|
||||
|
||||
void WidebandFMAudio::on_message(const Message* const message) {
|
||||
switch(message->id) {
|
||||
case Message::ID::UpdateSpectrum:
|
||||
case Message::ID::SpectrumStreamingConfig:
|
||||
channel_spectrum.on_message(message);
|
||||
break;
|
||||
switch (message->id) {
|
||||
case Message::ID::UpdateSpectrum:
|
||||
case Message::ID::SpectrumStreamingConfig:
|
||||
channel_spectrum.on_message(message);
|
||||
break;
|
||||
|
||||
case Message::ID::WFMConfigure:
|
||||
configure(*reinterpret_cast<const WFMConfigureMessage*>(message));
|
||||
break;
|
||||
case Message::ID::WFMConfigure:
|
||||
configure(*reinterpret_cast<const WFMConfigureMessage*>(message));
|
||||
break;
|
||||
|
||||
case Message::ID::CaptureConfig:
|
||||
capture_config(*reinterpret_cast<const CaptureConfigMessage*>(message));
|
||||
break;
|
||||
|
||||
default:
|
||||
break;
|
||||
}
|
||||
case Message::ID::CaptureConfig:
|
||||
capture_config(*reinterpret_cast<const CaptureConfigMessage*>(message));
|
||||
break;
|
||||
|
||||
default:
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
void WidebandFMAudio::configure(const WFMConfigureMessage& message) {
|
||||
constexpr size_t decim_0_input_fs = baseband_fs;
|
||||
constexpr size_t decim_0_output_fs = decim_0_input_fs / decim_0.decimation_factor;
|
||||
constexpr size_t decim_0_input_fs = baseband_fs;
|
||||
constexpr size_t decim_0_output_fs = decim_0_input_fs / decim_0.decimation_factor;
|
||||
|
||||
constexpr size_t decim_1_input_fs = decim_0_output_fs;
|
||||
constexpr size_t decim_1_output_fs = decim_1_input_fs / decim_1.decimation_factor;
|
||||
constexpr size_t decim_1_input_fs = decim_0_output_fs;
|
||||
constexpr size_t decim_1_output_fs = decim_1_input_fs / decim_1.decimation_factor;
|
||||
|
||||
constexpr size_t demod_input_fs = decim_1_output_fs;
|
||||
constexpr size_t demod_input_fs = decim_1_output_fs;
|
||||
|
||||
spectrum_interval_samples = decim_1_output_fs / spectrum_rate_hz;
|
||||
spectrum_samples = 0;
|
||||
spectrum_interval_samples = decim_1_output_fs / spectrum_rate_hz;
|
||||
spectrum_samples = 0;
|
||||
|
||||
decim_0.configure(message.decim_0_filter.taps, 33554432);
|
||||
decim_1.configure(message.decim_1_filter.taps, 131072);
|
||||
channel_filter_low_f = message.decim_1_filter.low_frequency_normalized * decim_1_input_fs;
|
||||
channel_filter_high_f = message.decim_1_filter.high_frequency_normalized * decim_1_input_fs;
|
||||
channel_filter_transition = message.decim_1_filter.transition_normalized * decim_1_input_fs;
|
||||
demod.configure(demod_input_fs, message.deviation);
|
||||
audio_filter.configure(message.audio_filter.taps);
|
||||
audio_output.configure(message.audio_hpf_config, message.audio_deemph_config);
|
||||
decim_0.configure(message.decim_0_filter.taps, 33554432);
|
||||
decim_1.configure(message.decim_1_filter.taps, 131072);
|
||||
channel_filter_low_f = message.decim_1_filter.low_frequency_normalized * decim_1_input_fs;
|
||||
channel_filter_high_f = message.decim_1_filter.high_frequency_normalized * decim_1_input_fs;
|
||||
channel_filter_transition = message.decim_1_filter.transition_normalized * decim_1_input_fs;
|
||||
demod.configure(demod_input_fs, message.deviation);
|
||||
audio_filter.configure(message.audio_filter.taps);
|
||||
audio_output.configure(message.audio_hpf_config, message.audio_deemph_config);
|
||||
|
||||
channel_spectrum.set_decimation_factor(1);
|
||||
channel_spectrum.set_decimation_factor(1);
|
||||
|
||||
configured = true;
|
||||
configured = true;
|
||||
}
|
||||
|
||||
void WidebandFMAudio::capture_config(const CaptureConfigMessage& message) {
|
||||
if( message.config ) {
|
||||
audio_output.set_stream(std::make_unique<StreamInput>(message.config));
|
||||
} else {
|
||||
audio_output.set_stream(nullptr);
|
||||
}
|
||||
if (message.config) {
|
||||
audio_output.set_stream(std::make_unique<StreamInput>(message.config));
|
||||
} else {
|
||||
audio_output.set_stream(nullptr);
|
||||
}
|
||||
}
|
||||
|
||||
int main() {
|
||||
EventDispatcher event_dispatcher { std::make_unique<WidebandFMAudio>() };
|
||||
event_dispatcher.run();
|
||||
return 0;
|
||||
EventDispatcher event_dispatcher{std::make_unique<WidebandFMAudio>()};
|
||||
event_dispatcher.run();
|
||||
return 0;
|
||||
}
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue