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Add capture mode waterfall.

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This commit is contained in:
Jared Boone 2016-04-13 11:09:18 -07:00
parent 2201a9e95f
commit ec75c00da2
4 changed files with 81 additions and 4 deletions
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48
firmware/baseband/proc_capture.cpp
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@ -26,8 +26,29 @@
#include "utility.hpp"
CaptureProcessor::CaptureProcessor() {
decim_0.configure(taps_200k_decim_0.taps, 33554432);
decim_1.configure(taps_200k_decim_1.taps, 131072);
const auto& decim_0_filter = taps_200k_decim_0;
constexpr size_t decim_0_input_fs = baseband_fs;
constexpr size_t decim_0_output_fs = decim_0_input_fs / decim_0.decimation_factor;
const auto& decim_1_filter = taps_200k_decim_1;
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;
const auto& channel_filter = decim_1_filter;
constexpr size_t channel_filter_input_fs = decim_1_output_fs;
constexpr size_t channel_decimation = 1;
const size_t channel_filter_output_fs = channel_filter_input_fs / channel_decimation;
decim_0.configure(decim_0_filter.taps, 33554432);
decim_1.configure(decim_1_filter.taps, 131072);
channel_filter_pass_f = channel_filter.pass_frequency_normalized * channel_filter_input_fs;
channel_filter_stop_f = channel_filter.stop_frequency_normalized * channel_filter_input_fs;
spectrum_interval_samples = channel_filter_output_fs / spectrum_rate_hz;
spectrum_samples = 0;
channel_spectrum.set_decimation_factor(1);
stream = std::make_unique<StreamInput>(15);
}
@ -36,12 +57,31 @@ void CaptureProcessor::execute(const buffer_c8_t& buffer) {
/* 2.4576MHz, 2048 samples */
const auto decim_0_out = decim_0.execute(buffer, dst_buffer);
const auto decim_1_out = decim_1.execute(decim_0_out, dst_buffer);
const auto decimator_out = decim_1_out;
const auto& decimator_out = decim_1_out;
const auto& channel = decimator_out;
if( stream ) {
const size_t bytes_to_write = sizeof(*decimator_out.p) * decimator_out.count;
const auto result = stream->write(decimator_out.p, bytes_to_write);
}
feed_channel_stats(decimator_out);
feed_channel_stats(channel);
spectrum_samples += channel.count;
if( spectrum_samples >= spectrum_interval_samples ) {
spectrum_samples -= spectrum_interval_samples;
channel_spectrum.feed(channel, channel_filter_pass_f, channel_filter_stop_f);
}
}
void CaptureProcessor::on_message(const Message* const message) {
switch(message->id) {
case Message::ID::UpdateSpectrum:
case Message::ID::SpectrumStreamingConfig:
channel_spectrum.on_message(message);
break;
default:
break;
}
}