diff options
Diffstat (limited to 'libs/ardour/transient_detector.cc')
-rw-r--r-- | libs/ardour/transient_detector.cc | 57 |
1 files changed, 56 insertions, 1 deletions
diff --git a/libs/ardour/transient_detector.cc b/libs/ardour/transient_detector.cc index b85700dd90..b92bf5fb2d 100644 --- a/libs/ardour/transient_detector.cc +++ b/libs/ardour/transient_detector.cc @@ -6,20 +6,36 @@ using namespace Vamp; using namespace ARDOUR; using namespace std; +string TransientDetector::_op_id; + TransientDetector::TransientDetector (float sr) : AudioAnalyser (sr, X_("libardourvampplugins:percussiononsets")) { + if (_op_id.empty()) { + _op_id = X_("libardourvampplugins:percussiononsets"); + + // XXX this should load the above-named plugin and get the current version + + _op_id += ":2"; + } } TransientDetector::~TransientDetector() { } +string +TransientDetector::operational_identifier() +{ + return _op_id; +} + int -TransientDetector::run (const std::string& path, Readable* src, uint32_t channel, vector<nframes64_t>& results) +TransientDetector::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; } @@ -59,3 +75,42 @@ TransientDetector::set_sensitivity (float val) plugin->setParameter ("sensitivity", val); } } + +void +TransientDetector::cleanup_transients (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 nframes64_t gap_frames = (nframes64_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); + } + } +} |