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Diffstat (limited to 'src/events_ds.cc')
| -rw-r--r-- | src/events_ds.cc | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/src/events_ds.cc b/src/events_ds.cc new file mode 100644 index 0000000..988cb21 --- /dev/null +++ b/src/events_ds.cc @@ -0,0 +1,118 @@ +/* -*- 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); +} |