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authorNaushir Patuck <naush@raspberrypi.com>2023-03-07 10:30:22 +0000
committerKieran Bingham <kieran.bingham@ideasonboard.com>2023-03-07 21:55:05 +0000
commit9648e859946bfd5e2eb30cf2655777670d24ccfb (patch)
tree6934859444881a851b4ada3e72d9c6542e6f1afb /test/py
parentb6d84ed4566fe6bbb090a1c2b79fb768a266ebfb (diff)
ipa: raspberrypi: Better heuristics for calculating Unicam timeout
The existing mechanism of setting a timeout value simply uses the maximum possible frame length advertised by the sensor mode. This can be problematic when, for example, the IMX477 sensor can use a frame length of over 600 seconds. However, for typical usage the frame length will never go over several 100s of milliseconds, making the timeout very impractical. Store a list of the last 10 frame length values requested by the AGC. On startup, and at the end of every frame, take the maximum frame length value from this list and return that to the pipeline handler through the setCameraTimeoutValue() signal. This allows the timeout value to better track the actual sensor usage. Signed-off-by: Naushir Patuck <naush@raspberrypi.com> Reviewed-by: David Plowman <david.plowman@raspberrypi.com> Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com> Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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generated by cgit v1.2.1 (git 2.18.0) at 2025-02-17 07:10:49 +0000
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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
 * Copyright (C) 2021, Ideas on Board Oy
 *
 * drm.cpp - DRM/KMS Helpers
 */

#include "drm.h"

#include <algorithm>
#include <errno.h>
#include <fcntl.h>
#include <iostream>
#include <set>
#include <string.h>
#include <sys/ioctl.h>
#include <sys/stat.h>
#include <sys/types.h>

#include <libcamera/framebuffer.h>
#include <libcamera/geometry.h>
#include <libcamera/pixel_format.h>

#include <libdrm/drm_mode.h>

#include "event_loop.h"

namespace DRM {

Object::Object(Device *dev, uint32_t id, Type type)
	: id_(id), dev_(dev), type_(type)
{
	/* Retrieve properties from the objects that support them. */
	if (type != TypeConnector && type != TypeCrtc &&
	    type != TypeEncoder && type != TypePlane)
		return;

	/*
	 * We can't distinguish between failures due to the object having no
	 * property and failures due to other conditions. Assume we use the API
	 * correctly and consider the object has no property.
	 */
	drmModeObjectProperties *properties = drmModeObjectGetProperties(dev->fd(), id, type);
	if (!properties)
		return;

	properties_.reserve(properties->count_props);
	for (uint32_t i = 0; i < properties->count_props; ++i)
		properties_.emplace_back(properties->props[i],
					 properties->prop_values[i]);

	drmModeFreeObjectProperties(properties);
}

Object::~Object()
{
}

const Property *Object::property(const std::string &name) const
{
	for (const PropertyValue &pv : properties_) {
		const Property *property = static_cast<const Property *>(dev_->object(pv.id()));
		if (property && property->name() == name)
			return property;
	}

	return nullptr;
}