134 lines
3.2 KiB
C++
134 lines
3.2 KiB
C++
/*
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Copyright (C) 2008 Paul Davis
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include "ardour/analyser.h"
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#include "ardour/audiofilesource.h"
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#include "ardour/rc_configuration.h"
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#include "ardour/session_event.h"
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#include "ardour/transient_detector.h"
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#include "pbd/compose.h"
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#include "pbd/error.h"
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#include "pbd/i18n.h"
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using namespace std;
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using namespace ARDOUR;
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using namespace PBD;
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Analyser* Analyser::the_analyser = 0;
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Glib::Threads::Mutex Analyser::analysis_active_lock;
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Glib::Threads::Mutex Analyser::analysis_queue_lock;
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Glib::Threads::Cond Analyser::SourcesToAnalyse;
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list<boost::weak_ptr<Source> > Analyser::analysis_queue;
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Analyser::Analyser ()
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{
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}
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Analyser::~Analyser ()
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{
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}
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static void
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analyser_work ()
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{
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Analyser::work ();
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}
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void
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Analyser::init ()
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{
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Glib::Threads::Thread::create (sigc::ptr_fun (analyser_work));
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}
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void
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Analyser::queue_source_for_analysis (boost::shared_ptr<Source> src, bool force)
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{
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if (!src->can_be_analysed()) {
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return;
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}
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if (!force && src->has_been_analysed()) {
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return;
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}
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Glib::Threads::Mutex::Lock lm (analysis_queue_lock);
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analysis_queue.push_back (boost::weak_ptr<Source>(src));
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SourcesToAnalyse.broadcast ();
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}
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void
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Analyser::work ()
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{
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SessionEvent::create_per_thread_pool ("Analyser", 64);
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while (true) {
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analysis_queue_lock.lock ();
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wait:
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if (analysis_queue.empty()) {
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SourcesToAnalyse.wait (analysis_queue_lock);
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}
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if (analysis_queue.empty()) {
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goto wait;
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}
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boost::shared_ptr<Source> src (analysis_queue.front().lock());
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analysis_queue.pop_front();
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analysis_queue_lock.unlock ();
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boost::shared_ptr<AudioFileSource> afs = boost::dynamic_pointer_cast<AudioFileSource> (src);
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if (afs && afs->length(afs->timeline_position())) {
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Glib::Threads::Mutex::Lock lm (analysis_active_lock);
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analyse_audio_file_source (afs);
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}
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}
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}
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void
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Analyser::analyse_audio_file_source (boost::shared_ptr<AudioFileSource> src)
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{
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AnalysisFeatureList results;
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try {
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TransientDetector td (src->sample_rate());
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td.set_sensitivity (3, Config->get_transient_sensitivity()); // "General purpose"
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if (td.run (src->get_transients_path(), src.get(), 0, results) == 0) {
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src->set_been_analysed (true);
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} else {
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src->set_been_analysed (false);
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}
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} catch (...) {
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error << string_compose(_("Transient Analysis failed for %1."), _("Audio File Source")) << endmsg;;
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src->set_been_analysed (false);
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return;
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}
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}
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void
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Analyser::flush ()
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{
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Glib::Threads::Mutex::Lock lq (analysis_queue_lock);
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Glib::Threads::Mutex::Lock la (analysis_active_lock);
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analysis_queue.clear();
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}
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