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authorAndré Nusser <andre.nusser@googlemail.com>2020-01-12 15:41:39 +0100
committerAndré Nusser <andre.nusser@googlemail.com>2020-02-16 19:57:13 +0100
commitfb992677cf62b6aa982476538faae43e5bbbd87f (patch)
tree8973b63653e2acbecb2b273444b4dc67dc623fd8 /src/events_ds.cc
parent8070e5578aa9d185f07534778dc0ebf596fece13 (diff)
Introduce EventsDS to handle all the events and enable new features.
Also: * Added an id.h class to make IDs with type * Added a range class to easily use range based for loops
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+/* -*- Mode: c++ -*- */
+/***************************************************************************
+ * events_ds.cc
+ *
+ * Sun Jan 12 00:17:31 CET 2020
+ * Copyright 2020 André Nusser
+ * andre.nusser@googlemail.com
+ ****************************************************************************/
+
+/*
+ * This file is part of DrumGizmo.
+ *
+ * DrumGizmo is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * DrumGizmo 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 Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with DrumGizmo; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+#include "events_ds.h"
+
+#include <type_traits>
+
+// TODO: we assume that we add a group in one batch without deleting anything in-between!!!
+
+void EventsDS::remove(EventID event_id)
+{
+ auto const& event_info = id_to_info.get(event_id);
+
+ if (event_info.type == Event::Type::SampleEvent)
+ {
+ auto& sample_events = channel_data_array[event_info.ch].sample_events;
+ auto& event = sample_events[event_info.channel_event_index];
+
+ // remove from id_to_group_data and delete the group if empty
+ auto& ids = id_to_group_data.get(event.group_id).event_ids;
+ ids.erase(std::remove(ids.begin(), ids.end(), event_id), ids.end());
+ if (id_to_group_data.get(event.group_id).event_ids.empty())
+ {
+ removeGroup(event.group_id, event.instrument_id);
+ }
+
+ // remove from channel_data_array
+ auto& swap_element = sample_events.back();
+ id_to_info.get(swap_element.id).channel_event_index = event_info.channel_event_index;
+ event = swap_element;
+ sample_events.pop_back();
+ }
+
+ // remove from id_to_info
+ id_to_info.remove(event_id);
+}
+
+std::size_t EventsDS::numberOfEvents(int ch) const
+{
+ auto& channel_data = channel_data_array[ch];
+ return channel_data.sample_events.size();
+}
+
+EventGroupIDs const& EventsDS::getSampleEventGroupIDsOf(InstrumentID instrument_id) const
+{
+ return instruments_sample_event_group_ids[instrument_id];
+}
+
+EventIDs const& EventsDS::getEventIDsOf(EventGroupID event_group_id) const
+{
+ return id_to_group_data.get(event_group_id).event_ids;
+}
+
+void EventsDS::startAddingNewGroup(InstrumentID instrument_id)
+{
+ // if nothing got added for the last group, delete it
+ if (current_group_id.valid() && id_to_group_data.get(current_group_id).event_ids.empty())
+ {
+ removeGroup(current_group_id, current_groups_instrument_id);
+ }
+
+ current_group_id = id_to_group_data.emplace();
+ if (instrument_id.valid())
+ {
+ current_groups_instrument_id = instrument_id;
+ auto& group_ids = instruments_sample_event_group_ids[instrument_id];
+ group_ids.push_back(current_group_id);
+ id_to_group_data.get(current_group_id).instrument_index = group_ids.size() - 1;
+ }
+ else {
+ current_groups_instrument_id.invalidate();
+ }
+}
+
+void EventsDS::removeGroup(EventGroupID group_id, InstrumentID instrument_id)
+{
+ // if we remove the current group, then invalidate it
+ if (group_id == current_group_id)
+ {
+ current_group_id.invalidate();
+ current_groups_instrument_id.invalidate();
+ }
+
+ if (instrument_id.valid())
+ {
+ auto index = id_to_group_data.get(group_id).instrument_index;
+ auto& ids = instruments_sample_event_group_ids[instrument_id];
+
+ id_to_group_data.get(ids.back()).instrument_index = index;
+ ids[index] = ids.back();
+ ids.pop_back();
+ }
+
+ id_to_group_data.remove(group_id);
+}