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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2019, Google Inc.
*
* message.h - Message queue support
*/
#ifndef __LIBCAMERA_MESSAGE_H__
#define __LIBCAMERA_MESSAGE_H__
#include <atomic>
namespace libcamera {
class Object;
class SlotBase;
class Thread;
class Message
{
public:
enum Type {
None = 0,
SignalMessage = 1,
UserMessage = 1000,
};
Message(Type type);
virtual ~Message();
Type type() const { return type_; }
Object *receiver() const { return receiver_; }
static Type registerMessageType();
private:
friend class Thread;
Type type_;
Object *receiver_;
static std::atomic_uint nextUserType_;
};
class SignalMessage : public Message
{
public:
SignalMessage(SlotBase *slot, void *pack)
: Message(Message::SignalMessage), slot_(slot), pack_(pack)
{
}
SlotBase *slot_;
void *pack_;
};
} /* namespace libcamera */
#endif /* __LIBCAMERA_MESSAGE_H__ */
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