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#pragma once
#include <config.h>
#include <algorithm>
#include <array>
#include <vector>
#include "events.h"
#include "id.h"
#include "memory_heap.h"
#include "range.h"
#include "instrument.h"
class EventsDS
{
public:
template <typename T, typename... Args>
T& emplace(channel_t ch, Args&&... args);
void remove(EventID event_id);
std::size_t numberOfEvents(channel_t ch) const;
template <typename T>
ContainerRange<std::vector<T>> iterateOver(channel_t ch);
const EventGroupIDs& getSampleEventGroupIDsOf(InstrumentID instrument_id) const;
const EventIDs& getEventIDsOf(EventGroupID event_group_id) const;
void startAddingNewGroup(InstrumentID instrument_id = InstrumentID());
private:
struct ChannelData
{
std::vector<SampleEvent> sample_events;
};
using ChannelEventIndex = std::size_t;
struct EventInfo
{
Event::Type type;
channel_t ch;
ChannelEventIndex channel_event_index;
EventInfo(Event::Type type, channel_t ch, ChannelEventIndex channel_event_index)
: type(type), ch(ch), channel_event_index(channel_event_index) {}
};
struct GroupData
{
EventIDs event_ids;
std::size_t instrument_index;
};
std::array<ChannelData, NUM_CHANNELS> channel_data_array;
MemoryHeap<EventInfo> id_to_info;
MemoryHeap<GroupData> id_to_group_data;
std::array<EventGroupIDs, 128> instruments_sample_event_group_ids;
EventGroupID current_group_id;
InstrumentID current_groups_instrument_id;
void removeGroup(EventGroupID group_id, InstrumentID instrument_id = InstrumentID());
};
template <typename T, typename... Args>
T& EventsDS::emplace(channel_t ch, Args&&... args)
{
static_assert(std::is_same<T, SampleEvent>::value);
if (std::is_same<T, SampleEvent>::value)
{
auto& sample_events = channel_data_array[ch].sample_events;
auto channel_event_index = sample_events.size();
sample_events.emplace_back(std::forward<Args>(args)...);
auto event_id = id_to_info.emplace(Event::Type::SampleEvent, ch, channel_event_index);
id_to_group_data.get(current_group_id).event_ids.push_back(event_id);
auto& sample_event = sample_events.back();
sample_event.id = event_id;
sample_event.group_id = current_group_id;
assert(sample_event.instrument_id == current_groups_instrument_id);
assert(sample_event.channel == ch);
return sample_event;
}
}
template <typename T>
ContainerRange<std::vector<T>> EventsDS::iterateOver(channel_t ch)
{
static_assert(std::is_same<T, SampleEvent>::value);
if (std::is_same<T, SampleEvent>::value)
{
auto& sample_events = channel_data_array[ch].sample_events;
return ContainerRange<std::vector<T>>(sample_events.begin(), sample_events.end());
}
}
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