115 lines
2.7 KiB
C++
115 lines
2.7 KiB
C++
/* #define DEBUGTRACE_ENABLED */
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#include "debugtrace.hpp"
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#include "lasp_ppm.h"
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#include "lasp_daqdata.h"
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#include "lasp_daq.h"
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#include <mutex>
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using std::cerr;
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using std::endl;
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using Lck = std::scoped_lock<std::mutex>;
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using rte = std::runtime_error;
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PPMHandler::PPMHandler(SmgrHandle mgr, const d decay_dBps)
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: ThreadedInDataHandler<PPMHandler>(mgr), _decay_dBps(decay_dBps) {
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DEBUGTRACE_ENTER;
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startThread();
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}
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void PPMHandler::inCallback(const DaqData &d) {
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DEBUGTRACE_ENTER;
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Lck lck(_mtx);
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dmat data = d.toFloat();
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const us nchannels = d.nchannels;
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assert(data.n_cols == nchannels);
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if (nchannels != _cur_max.size()) {
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DEBUGTRACE_PRINT("Resizing clip and cur max");
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_cur_max = vd(nchannels, arma::fill::value(1e-80));
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_clip_time = vd(nchannels, arma::fill::value(-1));
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}
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assert(_clip_time.size() == _cur_max.size());
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/// Obtain max abs values for each column, convert this row-vec to a column
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/// vector, and scale with the max-range for each channel
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vd maxabs = arma::max(arma::abs(data), 0).as_col() / _max_range;
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/// Find indices for channels that have a clip
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arma::uvec clips = maxabs > clip_point;
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/// Find channels where the new maximum is higher than the previous one
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arma::uvec update_max = maxabs > _cur_max;
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for (us i = 0; i < nchannels; i++) {
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if (clips(i)) {
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/// Reset clip counter
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_clip_time(i) = 0;
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} else if (_clip_time(i) > clip_indication_time) {
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/// Reset to 'unclipped'
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_clip_time(i) = -1;
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} else if (_clip_time(i) >= 0) {
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/// Add a bit of clip time
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_clip_time(i) += _dt;
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}
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if (update_max(i)) {
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_cur_max(i) = maxabs(i);
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} else {
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_cur_max(i) *= _alpha;
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}
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}
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}
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std::tuple<vd, arma::uvec> PPMHandler::getCurrentValue() const {
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/* DEBUGTRACE_ENTER; */
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Lck lck(_mtx);
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arma::uvec clips(_clip_time.size(), arma::fill::zeros);
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clips.elem(arma::find(_clip_time >= 0)).fill(1);
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return {20 * arma::log10(_cur_max + arma::datum::eps).as_col(), clips};
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}
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void PPMHandler::reset(const Daq *daq) {
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DEBUGTRACE_ENTER;
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Lck lck(_mtx);
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if (daq) {
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DEBUGTRACE_PRINT("New daq found");
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_cur_max.fill(1e-80);
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const us nchannels = daq->neninchannels();
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DEBUGTRACE_PRINT(nchannels);
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_max_range.resize(nchannels);
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dvec ranges = daq->inputRangeForEnabledChannels();
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assert(ranges.size() == nchannels);
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for(us i=0;i<daq->neninchannels();i++) {
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_max_range[i] = ranges[i];
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}
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_clip_time.fill(-1);
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const d fs = daq->samplerate();
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/* DEBUGTRACE_PRINT(fs); */
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_dt = daq->framesPerBlock() / fs;
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_alpha = std::max<d>(d_pow(10, -_dt * _decay_dBps / (20)), 0);
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/* DEBUGTRACE_PRINT(_alpha); */
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}
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}
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PPMHandler::~PPMHandler() {
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DEBUGTRACE_ENTER;
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stopThread();
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}
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