1 files changed, 72 insertions, 0 deletions
diff --git a/src/libcamera/pipeline/rkisp1/timeline.h b/src/libcamera/pipeline/rkisp1/timeline.h
new file mode 100644
index 00000000..9d30e4ea
--- /dev/null
+++ b/src/libcamera/pipeline/rkisp1/timeline.h
@@ -0,0 +1,72 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+/*
+ * Copyright (C) 2019, Google Inc.
+ *
+ * timeline.h - Timeline for per-frame controls
+ */
+#ifndef __LIBCAMERA_TIMELINE_H__
+#define __LIBCAMERA_TIMELINE_H__
+
+#include <list>
+#include <map>
+
+#include <libcamera/timer.h>
+
+#include "utils.h"
+
+namespace libcamera {
+
+class FrameAction
+{
+public:
+	FrameAction(unsigned int frame, unsigned int type)
+		: frame_(frame), type_(type) {}
+
+	virtual ~FrameAction() {}
+
+	unsigned int frame() const { return frame_; }
+	unsigned int type() const { return type_; }
+
+	virtual void run() = 0;
+
+private:
+	unsigned int frame_;
+	unsigned int type_;
+};
+
+class Timeline
+{
+public:
+	Timeline();
+	virtual ~Timeline() {}
+
+	virtual void reset();
+	virtual void scheduleAction(std::unique_ptr<FrameAction> action);
+	virtual void notifyStartOfExposure(unsigned int frame, utils::time_point time);
+
+	utils::duration frameInterval() const { return frameInterval_; }
+
+protected:
+	int frameOffset(unsigned int type) const;
+	utils::duration timeOffset(unsigned int type) const;
+
+	void setRawDelay(unsigned int type, int frame, utils::duration time);
+
+	std::map<unsigned int, std::pair<int, utils::duration>> delays_;
+
+private:
+	static constexpr unsigned int HISTORY_DEPTH = 10;
+
+	void timeout(Timer *timer);
+	void updateDeadline();
+
+	std::list<std::pair<unsigned int, utils::time_point>> history_;
+	std::multimap<utils::time_point, std::unique_ptr<FrameAction>> actions_;
+	utils::duration frameInterval_;
+
+	Timer timer_;
+};
+
+} /* namespace libcamera */
+
+#endif /* __LIBCAMERA_TIMELINE_H__ */