+boost::shared_ptr<Source>
+SourceFactory::createFromPlaylist (DataType type, Session& s, boost::shared_ptr<Playlist> p, const ID& orig, const std::string& name,
+ uint32_t chn, frameoffset_t start, framecnt_t len, bool copy, bool defer_peaks)
+{
+ if (type == DataType::AUDIO) {
+ try {
+
+ boost::shared_ptr<AudioPlaylist> ap = boost::dynamic_pointer_cast<AudioPlaylist>(p);
+
+ if (ap) {
+
+ if (copy) {
+ ap.reset (new AudioPlaylist (ap, start, len, name, true));
+ start = 0;
+ }
+
+ Source* src = new AudioPlaylistSource (s, orig, name, ap, chn, start, len, Source::Flag (0));
+ boost::shared_ptr<Source> ret (src);
+
+ if (setup_peakfile (ret, defer_peaks)) {
+ return boost::shared_ptr<Source>();
+ }
+
+ ret->check_for_analysis_data_on_disk ();
+ SourceCreated (ret);
+ return ret;
+ }
+ }
+
+ catch (failed_constructor& err) {
+ /* relax - return at function scope */
+ }
+
+ } else if (type == DataType::MIDI) {
+
+ try {
+
+ boost::shared_ptr<MidiPlaylist> ap = boost::dynamic_pointer_cast<MidiPlaylist>(p);
+
+ if (ap) {
+
+ if (copy) {
+ ap.reset (new MidiPlaylist (ap, start, len, name, true));
+ start = 0;
+ }
+
+ Source* src = new MidiPlaylistSource (s, orig, name, ap, chn, start, len, Source::Flag (0));
+ boost::shared_ptr<Source> ret (src);
+
+ SourceCreated (ret);
+ return ret;
+ }
+ }
+
+ catch (failed_constructor& err) {
+ /* relax - return at function scope */
+ }
+
+ }
+
+ return boost::shared_ptr<Source>();
+}
+