From 1a57bcb8d1a7a49cc8a43596a79d57cd2fbb5dfe Mon Sep 17 00:00:00 2001
From: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Date: Fri, 4 Jan 2019 21:19:38 +0200
Subject: libcamera: Add event notification infrastructure
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Add three new classes, EventDispatcher, EventNotifier and Timer, that
define APIs for file descriptor event notification and timers. The
implementation of the EventDispatcher is meant to be provided to
libcamera by the application.

The event dispatcher is integrated twith the camera manager to implement
automatic registration of timers and events.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
---
 include/libcamera/timer.h | 37 +++++++++++++++++++++++++++++++++++++
 1 file changed, 37 insertions(+)
 create mode 100644 include/libcamera/timer.h

(limited to 'include/libcamera/timer.h')

diff --git a/include/libcamera/timer.h b/include/libcamera/timer.h
new file mode 100644
index 00000000..97dcc01f
--- /dev/null
+++ b/include/libcamera/timer.h
@@ -0,0 +1,37 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+/*
+ * Copyright (C) 2019, Google Inc.
+ *
+ * timer.h - Generic timer
+ */
+#ifndef __LIBCAMERA_TIMER_H__
+#define __LIBCAMERA_TIMER_H__
+
+#include <cstdint>
+
+#include <libcamera/signal.h>
+
+namespace libcamera {
+
+class Timer
+{
+public:
+	Timer();
+
+	void start(unsigned int msec);
+	void stop();
+	bool isRunning() const;
+
+	unsigned int interval() const { return interval_; }
+	uint64_t deadline() const { return deadline_; }
+
+	Signal<Timer *> timeout;
+
+private:
+	unsigned int interval_;
+	uint64_t deadline_;
+};
+
+} /* namespace libcamera */
+
+#endif /* __LIBCAMERA_TIMER_H__ */
-- 
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