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#include "ardour/onset_detector.h"
#include "i18n.h"
using namespace Vamp;
using namespace ARDOUR;
using namespace std;
/* need a static initializer function for this */
string OnsetDetector::_op_id = X_("libardourvampplugins:aubioonset:2");
OnsetDetector::OnsetDetector (float sr)
: AudioAnalyser (sr, X_("libardourvampplugins:aubioonset"))
, current_results (0)
{
/* update the op_id */
_op_id = X_("libardourvampplugins:aubioonset");
// XXX this should load the above-named plugin and get the current version
_op_id += ":2";
}
OnsetDetector::~OnsetDetector()
{
}
string
OnsetDetector::operational_identifier()
{
return _op_id;
}
int
OnsetDetector::run (const std::string& path, Readable* src, uint32_t channel, AnalysisFeatureList& results)
{
current_results = &results;
int ret = analyse (path, src, channel);
current_results = 0;
return ret;
}
int
OnsetDetector::use_features (Plugin::FeatureSet& features, ostream* out)
{
const Plugin::FeatureList& fl (features[0]);
for (Plugin::FeatureList::const_iterator f = fl.begin(); f != fl.end(); ++f) {
if ((*f).hasTimestamp) {
if (out) {
(*out) << (*f).timestamp.toString() << endl;
}
current_results->push_back (RealTime::realTime2Frame ((*f).timestamp, (nframes_t) floor(sample_rate)));
}
}
return 0;
}
void
OnsetDetector::set_silence_threshold (float val)
{
if (plugin) {
plugin->setParameter ("silencethreshold", val);
}
}
void
OnsetDetector::set_peak_threshold (float val)
{
if (plugin) {
plugin->setParameter ("peakpickthreshold", val);
}
}
void
OnsetDetector::set_function (int val)
{
if (plugin) {
plugin->setParameter ("onsettype", (float) val);
}
}
void
OnsetDetector::cleanup_onsets (AnalysisFeatureList& t, float sr, float gap_msecs)
{
if (t.empty()) {
return;
}
t.sort ();
/* remove duplicates or other things that are too close */
AnalysisFeatureList::iterator i = t.begin();
AnalysisFeatureList::iterator f, b;
const framecnt_t gap_frames = (framecnt_t) floor (gap_msecs * (sr / 1000.0));
while (i != t.end()) {
// move front iterator to just past i, and back iterator the same place
f = i;
++f;
b = f;
// move f until we find a new value that is far enough away
while ((f != t.end()) && (((*f) - (*i)) < gap_frames)) {
++f;
}
i = f;
// if f moved forward from b, we had duplicates/too-close points: get rid of them
if (b != f) {
t.erase (b, f);
}
}
}
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