+ChanCount
+Plugin::output_streams () const
+{
+ /* LADSPA & VST should not get here because they do not
+ return "infinite" i/o counts.
+ */
+ return ChanCount::ZERO;
+}
+
+ChanCount
+Plugin::input_streams () const
+{
+ /* LADSPA & VST should not get here because they do not
+ return "infinite" i/o counts.
+ */
+ return ChanCount::ZERO;
+}
+
+const Plugin::PresetRecord *
+Plugin::preset_by_label (const string& label)
+{
+ // FIXME: O(n)
+ for (map<string, PresetRecord>::const_iterator i = _presets.begin(); i != _presets.end(); ++i) {
+ if (i->second.label == label) {
+ return &i->second;
+ }
+ }
+
+ return 0;
+}
+
+const Plugin::PresetRecord *
+Plugin::preset_by_uri (const string& uri)
+{
+ map<string, PresetRecord>::const_iterator pr = _presets.find (uri);
+ if (pr != _presets.end()) {
+ return &pr->second;
+ } else {
+ return 0;
+ }
+}
+
+int
+Plugin::connect_and_run (BufferSet& bufs,
+ ChanMapping in_map, ChanMapping out_map,
+ pframes_t nframes, framecnt_t offset)
+{
+ if (bufs.count().n_midi() > 0) {
+
+ /* Track notes that we are sending to the plugin */
+ MidiBuffer& b = bufs.get_midi (0);
+ bool looped;
+ _tracker.track (b.begin(), b.end(), looped);
+
+ if (_have_pending_stop_events) {
+ /* Transmit note-offs that are pending from the last transport stop */
+ bufs.merge_from (_pending_stop_events, 0);
+ _have_pending_stop_events = false;
+ }
+ }
+
+ return 0;
+}
+
+void
+Plugin::realtime_handle_transport_stopped ()
+{
+ /* Create note-offs for any active notes and put them in _pending_stop_events, to be picked
+ up on the next call to connect_and_run ().
+ */
+
+ _pending_stop_events.ensure_buffers (DataType::MIDI, 1, 4096);
+ _pending_stop_events.get_midi(0).clear ();
+ _tracker.resolve_notes (_pending_stop_events.get_midi (0), 0);
+ _have_pending_stop_events = true;
+}
+
+vector<Plugin::PresetRecord>
+Plugin::get_presets ()
+{
+ if (!_have_presets) {
+ find_presets ();
+ _have_presets = true;
+ }
+
+ vector<PresetRecord> p;
+ for (map<string, PresetRecord>::const_iterator i = _presets.begin(); i != _presets.end(); ++i) {
+ p.push_back (i->second);
+ }
+
+ return p;
+}
+
+/** Set parameters using a preset */
+bool
+Plugin::load_preset (PresetRecord r)
+{
+ _last_preset = r;
+ _parameter_changed_since_last_preset = false;
+
+ PresetLoaded (); /* EMIT SIGNAL */
+ return true;
+}
+
+/** @param val `plugin' value */
+void
+Plugin::set_parameter (uint32_t which, float val)
+{
+ _parameter_changed_since_last_preset = true;
+ _session.set_dirty ();
+ ParameterChanged (which, val); /* EMIT SIGNAL */
+}
+
+int
+Plugin::set_state (const XMLNode& node, int version)
+{
+ XMLProperty const * p = node.property (X_("last-preset-uri"));
+ if (p) {
+ _last_preset.uri = p->value ();
+ }
+
+ p = node.property (X_("last-preset-label"));
+ if (p) {
+ _last_preset.label = p->value ();
+ }
+
+ p = node.property (X_("parameter-changed-since-last-preset"));
+ if (p) {
+ _parameter_changed_since_last_preset = string_is_affirmative (p->value ());
+ }
+
+ return 0;
+}
+
+XMLNode &
+Plugin::get_state ()
+{
+ XMLNode* root = new XMLNode (state_node_name ());
+ LocaleGuard lg (X_("POSIX"));
+
+ root->add_property (X_("last-preset-uri"), _last_preset.uri);
+ root->add_property (X_("last-preset-label"), _last_preset.label);
+ root->add_property (X_("parameter-changed-since-last-preset"), _parameter_changed_since_last_preset ? X_("yes") : X_("no"));
+
+ add_state (root);
+ return *root;
+}