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authorPaul Davis <paul@linuxaudiosystems.com>2008-06-02 21:41:35 +0000
committerPaul Davis <paul@linuxaudiosystems.com>2008-06-02 21:41:35 +0000
commit449aab3c465bbbf66d221fac3d7ea559f1720357 (patch)
tree6843cc40c88250a132acac701271f1504cd2df04 /libs/ardour/analyser.cc
parent9c0d7d72d70082a54f823cd44c0ccda5da64bb6f (diff)
rollback to 3428, before the mysterious removal of libs/* at 3431/3432
git-svn-id: svn://localhost/ardour2/branches/3.0@3435 d708f5d6-7413-0410-9779-e7cbd77b26cf
Diffstat (limited to 'libs/ardour/analyser.cc')
-rw-r--r--libs/ardour/analyser.cc119
1 files changed, 119 insertions, 0 deletions
diff --git a/libs/ardour/analyser.cc b/libs/ardour/analyser.cc
new file mode 100644
index 0000000000..2e14c74b86
--- /dev/null
+++ b/libs/ardour/analyser.cc
@@ -0,0 +1,119 @@
+/*
+ Copyright (C) 2008 Paul Davis
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+#include <ardour/analyser.h>
+#include <ardour/audiofilesource.h>
+#include <ardour/transient_detector.h>
+
+#include <pbd/pthread_utils.h>
+#include <pbd/convert.h>
+
+using namespace std;
+using namespace sigc;
+using namespace ARDOUR;
+using namespace PBD;
+
+Analyser* Analyser::the_analyser = 0;
+Glib::StaticMutex Analyser::analysis_queue_lock = GLIBMM_STATIC_MUTEX_INIT;
+Glib::Cond* Analyser::SourcesToAnalyse = 0;
+list<boost::weak_ptr<Source> > Analyser::analysis_queue;
+
+Analyser::Analyser ()
+{
+
+}
+
+Analyser::~Analyser ()
+{
+}
+
+static void
+analyser_work ()
+{
+ Analyser::work ();
+}
+
+void
+Analyser::init ()
+{
+ SourcesToAnalyse = new Glib::Cond();
+ Glib::Thread::create (sigc::ptr_fun (analyser_work), false);
+}
+
+void
+Analyser::queue_source_for_analysis (boost::shared_ptr<Source> src, bool force)
+{
+ if (!src->can_be_analysed()) {
+ return;
+ }
+
+ if (!force && src->has_been_analysed()) {
+ return;
+ }
+
+ Glib::Mutex::Lock lm (analysis_queue_lock);
+ analysis_queue.push_back (boost::weak_ptr<Source>(src));
+ SourcesToAnalyse->broadcast ();
+}
+
+void
+Analyser::work ()
+{
+ PBD::ThreadCreated (pthread_self(), string ("analyser-") + to_string (pthread_self(), std::dec));
+
+ while (true) {
+ analysis_queue_lock.lock ();
+
+ wait:
+ if (analysis_queue.empty()) {
+ SourcesToAnalyse->wait (analysis_queue_lock);
+ }
+
+ if (analysis_queue.empty()) {
+ goto wait;
+ }
+
+ boost::shared_ptr<Source> src (analysis_queue.front().lock());
+ analysis_queue.pop_front();
+ analysis_queue_lock.unlock ();
+
+ boost::shared_ptr<AudioFileSource> afs = boost::dynamic_pointer_cast<AudioFileSource> (src);
+
+ if (afs && afs->length()) {
+ analyse_audio_file_source (afs);
+ }
+ }
+}
+
+void
+Analyser::analyse_audio_file_source (boost::shared_ptr<AudioFileSource> src)
+{
+ AnalysisFeatureList results;
+
+ TransientDetector td (src->sample_rate());
+
+ if (td.run (src->get_transients_path(), src.get(), 0, results) == 0) {
+ src->set_been_analysed (true);
+ } else {
+ src->set_been_analysed (false);
+ }
+
+}
+
+