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

1 files changed, 269 insertions, 0 deletions

diff --git a/libs/ardour/source.cc b/libs/ardour/source.cc
new file mode 100644
index 0000000000..f08d08b86e
--- /dev/null
+++ b/libs/ardour/source.cc
@@ -0,0 +1,269 @@
+/*
+    Copyright (C) 2000 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 <sys/stat.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <poll.h>
+#include <float.h>
+#include <cerrno>
+#include <ctime>
+#include <cmath>
+#include <iomanip>
+#include <algorithm>
+#include <fstream>
+
+#include <glibmm/thread.h>
+#include <glibmm/miscutils.h>
+#include <glibmm/fileutils.h>
+#include <pbd/xml++.h>
+#include <pbd/pthread_utils.h>
+
+#include <ardour/source.h>
+#include <ardour/playlist.h>
+#include <ardour/session.h>
+#include <ardour/transient_detector.h>
+
+#include "i18n.h"
+
+using namespace std;
+using namespace ARDOUR;
+
+Source::Source (Session& s, const string& name, DataType type)
+	: SessionObject(s, name)
+	, _type(type)
+{
+	// not true.. is this supposed to be an assertion?
+	//assert(_name.find("/") == string::npos);
+
+	_analysed = false;
+	_timestamp = 0;
+	_length = 0;
+	_in_use = 0;
+}
+
+Source::Source (Session& s, const XMLNode& node) 
+	: SessionObject(s, "unnamed source")
+	, _type(DataType::AUDIO)
+{
+	_timestamp = 0;
+	_length = 0;
+	_analysed = false;
+	_in_use = 0;
+
+	if (set_state (node) || _type == DataType::NIL) {
+		throw failed_constructor();
+	}
+}
+
+Source::~Source ()
+{
+	notify_callbacks ();
+}
+
+XMLNode&
+Source::get_state ()
+{
+	XMLNode *node = new XMLNode ("Source");
+	char buf[64];
+
+	node->add_property ("name", _name);
+	node->add_property ("type", _type.to_string());
+	_id.print (buf, sizeof (buf));
+	node->add_property ("id", buf);
+
+	if (_timestamp != 0) {
+		snprintf (buf, sizeof (buf), "%ld", _timestamp);
+		node->add_property ("timestamp", buf);
+	}
+
+	return *node;
+}
+
+int
+Source::set_state (const XMLNode& node)
+{
+	const XMLProperty* prop;
+
+	if ((prop = node.property ("name")) != 0) {
+		_name = prop->value();
+	} else {
+		return -1;
+	}
+	
+	if ((prop = node.property ("id")) != 0) {
+		_id = prop->value ();
+	} else {
+		return -1;
+	}
+
+	if ((prop = node.property ("type")) != 0) {
+		_type = DataType(prop->value());
+	}
+
+	if ((prop = node.property ("timestamp")) != 0) {
+		sscanf (prop->value().c_str(), "%ld", &_timestamp);
+	}
+	
+	// Don't think this is valid, absolute paths fail
+	//assert(_name.find("/") == string::npos);
+
+	return 0;
+}
+
+void
+Source::update_length (nframes_t pos, nframes_t cnt)
+{
+	if (pos + cnt > _length) {
+		_length = pos+cnt;
+	}
+}
+
+void
+Source::add_playlist (boost::shared_ptr<Playlist> pl)
+{
+	std::pair<PlaylistMap::iterator,bool> res;
+	std::pair<boost::shared_ptr<Playlist>, uint32_t> newpair (pl, 1);
+	Glib::Mutex::Lock lm (_playlist_lock);
+
+	res = _playlists.insert (newpair);
+
+	if (!res.second) {
+		/* it already existed, bump count */
+		res.first->second++;
+	}
+		
+	pl->GoingAway.connect (bind (mem_fun (*this, &Source::remove_playlist), boost::weak_ptr<Playlist> (pl)));
+}
+
+void
+Source::remove_playlist (boost::weak_ptr<Playlist> wpl)
+{
+	boost::shared_ptr<Playlist> pl (wpl.lock());
+
+	if (!pl) {
+		return;
+	}
+
+	PlaylistMap::iterator x;
+	Glib::Mutex::Lock lm (_playlist_lock);
+
+	if ((x = _playlists.find (pl)) != _playlists.end()) {
+		if (x->second > 1) {
+			x->second--;
+		} else {
+			_playlists.erase (x);
+		}
+	}
+}
+
+uint32_t
+Source::used () const
+{
+	return _playlists.size();
+}
+
+bool
+Source::has_been_analysed() const
+{
+	Glib::Mutex::Lock lm (_analysis_lock);
+	return _analysed;
+}
+
+void
+Source::set_been_analysed (bool yn)
+{
+	{
+		Glib::Mutex::Lock lm (_analysis_lock);
+		_analysed = yn;
+	}
+	
+	if (yn) {
+		load_transients (get_transients_path());
+		AnalysisChanged(); // EMIT SIGNAL
+	}
+}
+
+int
+Source::load_transients (const string& path)
+{
+	ifstream file (path.c_str());
+
+	if (!file) {
+		return -1;
+	}
+	
+	transients.clear ();
+
+	stringstream strstr;
+	double val;
+
+	while (file.good()) {
+		file >> val;
+
+		if (!file.fail()) {
+			nframes64_t frame = (nframes64_t) floor (val * _session.frame_rate());
+			transients.push_back (frame);
+		}
+	}
+
+	return 0;
+}
+
+string 
+Source::get_transients_path () const
+{
+	vector<string> parts;
+	string s;
+
+	/* old sessions may not have the analysis directory */
+	
+	_session.ensure_subdirs ();
+
+	s = _session.analysis_dir ();
+	parts.push_back (s);
+
+	s = _id.to_s();
+	s += '.';
+	s += TransientDetector::operational_identifier();
+	parts.push_back (s);
+	
+	return Glib::build_filename (parts);
+}
+
+bool
+Source::check_for_analysis_data_on_disk () 
+{
+	/* looks to see if the analysis files for this source are on disk.
+	   if so, mark us already analysed.
+	*/
+
+	string path = get_transients_path ();
+	bool ok = true;
+
+	if (!Glib::file_test (path, Glib::FILE_TEST_EXISTS)) {
+		ok = false;
+	}
+
+	// XXX add other tests here as appropriate
+
+	set_been_analysed (ok);
+	return ok;
+}
+