Files
allwpilib/cscore/src/main/native/cpp/Notifier.h
Peter Johnson 29bf9d6ef1 [cscore] Add polled support to listener
Change Java VideoListener to use polling.
2021-01-31 17:06:37 -08:00

91 lines
2.9 KiB
C++

// Copyright (c) FIRST and other WPILib contributors.
// Open Source Software; you can modify and/or share it under the terms of
// the WPILib BSD license file in the root directory of this project.
#ifndef CSCORE_NOTIFIER_H_
#define CSCORE_NOTIFIER_H_
#include <functional>
#include <utility>
#include <wpi/CallbackManager.h>
#include "Handle.h"
#include "cscore_cpp.h"
namespace cs {
class SinkImpl;
class SourceImpl;
namespace impl {
struct ListenerData : public wpi::CallbackListenerData<
std::function<void(const RawEvent& event)>> {
ListenerData() = default;
ListenerData(std::function<void(const RawEvent& event)> callback_,
int eventMask_)
: CallbackListenerData(std::move(callback_)), eventMask(eventMask_) {}
ListenerData(unsigned int pollerUid_, int eventMask_)
: CallbackListenerData(pollerUid_), eventMask(eventMask_) {}
int eventMask;
};
class NotifierThread
: public wpi::CallbackThread<NotifierThread, RawEvent, ListenerData> {
public:
bool Matches(const ListenerData& /*listener*/, const RawEvent& /*data*/) {
return true;
}
void SetListener(RawEvent* data, unsigned int listener_uid) {
data->listener = Handle(listener_uid, Handle::kListener);
}
void DoCallback(std::function<void(const RawEvent& event)> callback,
const RawEvent& data) {
callback(data);
}
};
} // namespace impl
class Notifier : public wpi::CallbackManager<Notifier, impl::NotifierThread> {
friend class NotifierTest;
public:
Notifier();
~Notifier();
void Start();
unsigned int Add(std::function<void(const RawEvent& event)> callback,
int eventMask);
unsigned int AddPolled(unsigned int pollerUid, int eventMask);
// Notification events
void NotifySource(const wpi::Twine& name, CS_Source source,
CS_EventKind kind);
void NotifySource(const SourceImpl& source, CS_EventKind kind);
void NotifySourceVideoMode(const SourceImpl& source, const VideoMode& mode);
void NotifySourceProperty(const SourceImpl& source, CS_EventKind kind,
const wpi::Twine& propertyName, int property,
CS_PropertyKind propertyKind, int value,
const wpi::Twine& valueStr);
void NotifySink(const wpi::Twine& name, CS_Sink sink, CS_EventKind kind);
void NotifySink(const SinkImpl& sink, CS_EventKind kind);
void NotifySinkSourceChanged(const wpi::Twine& name, CS_Sink sink,
CS_Source source);
void NotifySinkProperty(const SinkImpl& sink, CS_EventKind kind,
const wpi::Twine& propertyName, int property,
CS_PropertyKind propertyKind, int value,
const wpi::Twine& valueStr);
void NotifyNetworkInterfacesChanged();
void NotifyTelemetryUpdated();
};
} // namespace cs
#endif // CSCORE_NOTIFIER_H_