ipa: raspberrypi: Add an operator<< to struct DeviceStatus

Add an operator<< overload to log all fields in DeviceStatus, and remove the
manual logging statements in the IPA and CamHelper.

Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
Reviewed-by: David Plowman <david.plowman@raspberrypi.com>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

src/ipa/raspberrypi/controller/device_status.cpp

@@ -0,0 +1,20 @@
+/* SPDX-License-Identifier: BSD-2-Clause */
+/*
+ * Copyright (C) 2021, Raspberry Pi (Trading) Limited
+ *
+ * device_status.cpp - device (image sensor) status
+ */
+#include "device_status.h"
+
+using namespace libcamera; /* for the Duration operator<< overload */
+
+std::ostream &operator<<(std::ostream &out, const DeviceStatus &d)
+{
+	out << "Exposure: " << d.shutter_speed
+	    << " Gain: " << d.analogue_gain
+	    << " Aperture: " << d.aperture
+	    << " Lens: " << d.lens_position
+	    << " Flash: " << d.flash_intensity;
+
+	return out;
+}

src/ipa/raspberrypi/controller/device_status.h

@@ -6,6 +6,8 @@
  */
 #pragma once
 
+#include <iostream>
+
 #include <libcamera/base/utils.h>
 
 /*
@@ -20,6 +22,8 @@ struct DeviceStatus {
 	{
 	}
 
+	friend std::ostream &operator<<(std::ostream &out, const DeviceStatus &d);
+
 	/* time shutter is open */
 	libcamera::utils::Duration shutter_speed;
 	double analogue_gain;