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This commit is contained in:
furrtek
2016-01-31 09:34:24 +01:00
parent 29ec87a9ad
commit 44638e504b
166 changed files with 8700 additions and 3967 deletions
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94
firmware/baseband/baseband_processor.cpp
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@@ -23,100 +23,14 @@
#include "portapack_shared_memory.hpp"
#include "dsp_fft.hpp"
#include "audio_dma.hpp"
#include "message.hpp"
#include "event_m4.hpp"
#include "utility.hpp"
#include <cstddef>
#include <algorithm>
void BasebandProcessor::update_spectrum() {
// Called from idle thread (after EVT_MASK_SPECTRUM is flagged)
if( channel_spectrum_request_update ) {
/* Decimated buffer is full. Compute spectrum. */
channel_spectrum_request_update = false;
fft_c_preswapped(channel_spectrum);
ChannelSpectrumMessage spectrum_message;
for(size_t i=0; i<spectrum_message.spectrum.db.size(); i++) {
const auto mag2 = magnitude_squared(channel_spectrum[i]);
const float db = complex16_mag_squared_to_dbv_norm(mag2);
constexpr float mag_scale = 5.0f;
const unsigned int v = (db * mag_scale) + 255.0f;
spectrum_message.spectrum.db[i] = std::max(0U, std::min(255U, v));
}
/* TODO: Rename .db -> .magnitude, or something more (less!) accurate. */
spectrum_message.spectrum.db_count = spectrum_message.spectrum.db.size();
spectrum_message.spectrum.sampling_rate = channel_spectrum_sampling_rate;
spectrum_message.spectrum.channel_filter_pass_frequency = channel_filter_pass_frequency;
spectrum_message.spectrum.channel_filter_stop_frequency = channel_filter_stop_frequency;
shared_memory.application_queue.push(spectrum_message);
}
}
void BasebandProcessor::feed_channel_stats(const buffer_c16_t channel) {
void BasebandProcessor::feed_channel_stats(const buffer_c16_t& channel) {
channel_stats.feed(
channel,
[this](const ChannelStatistics statistics) {
this->post_channel_stats_message(statistics);
[](const ChannelStatistics& statistics) {
const ChannelStatisticsMessage channel_stats_message { statistics };
shared_memory.application_queue.push(channel_stats_message);
}
);
}
void BasebandProcessor::feed_channel_spectrum(
const buffer_c16_t channel,
const uint32_t filter_pass_frequency,
const uint32_t filter_stop_frequency
) {
channel_filter_pass_frequency = filter_pass_frequency;
channel_filter_stop_frequency = filter_stop_frequency;
channel_spectrum_decimator.feed(
channel,
[this](const buffer_c16_t data) {
this->post_channel_spectrum_message(data);
}
);
}
void BasebandProcessor::fill_audio_buffer(const buffer_s16_t audio) {
auto audio_buffer = audio::dma::tx_empty_buffer();;
for(size_t i=0; i<audio_buffer.count; i++) {
audio_buffer.p[i].left = audio_buffer.p[i].right = audio.p[i];
}
i2s::i2s0::tx_unmute();
feed_audio_stats(audio);
}
void BasebandProcessor::post_channel_stats_message(const ChannelStatistics statistics) {
channel_stats_message.statistics = statistics;
shared_memory.application_queue.push(channel_stats_message);
}
void BasebandProcessor::post_channel_spectrum_message(const buffer_c16_t data) {
if( !channel_spectrum_request_update ) {
fft_swap(data, channel_spectrum);
channel_spectrum_sampling_rate = data.sampling_rate;
channel_spectrum_request_update = true;
events_flag(EVT_MASK_SPECTRUM);
}
}
void BasebandProcessor::feed_audio_stats(const buffer_s16_t audio) {
audio_stats.feed(
audio,
[this](const AudioStatistics statistics) {
this->post_audio_stats_message(statistics);
}
);
}
void BasebandProcessor::post_audio_stats_message(const AudioStatistics statistics) {
audio_stats_message.statistics = statistics;
shared_memory.application_queue.push(audio_stats_message);
}