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authorLaurent Pinchart <laurent.pinchart@ideasonboard.com>2024-06-16 00:34:16 +0300
committerLaurent Pinchart <laurent.pinchart@ideasonboard.com>2024-06-17 16:15:10 +0300
commit05d0f952a36c40392a9c8ccf86d3567a64ecba32 (patch)
tree3d90f6186ff3711c711d36e5d183720491cfad4c /src/ipa/rkisp1/algorithms/goc.cpp
parentde4ed4e966b476dbcfa63bc61028b0fc16ee4a78 (diff)
ipa: rkisp1: agc: Don't update histogram parameters unnecessarily
The ISP histogram parameters depends on the AE metering mode, but not on the other AE algorithm controls. The exposure mode, constraints mode and frame duration limits influence the behaviour of the algorithm, but not the histogram computation parameters. Update the histogram parameters only when AE metering mode changes. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
Diffstat (limited to 'src/ipa/rkisp1/algorithms/goc.cpp')
0 files changed, 0 insertions, 0 deletions
generated by cgit v1.2.1 (git 2.18.0) at 2024-12-22 10:12:47 +0000
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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
 * Copyright (C) 2019, Google Inc.
 *
 * device_enumerator_sysfs.cpp - sysfs-based device enumerator
 */

#include "libcamera/internal/device_enumerator_sysfs.h"

#include <dirent.h>
#include <fcntl.h>
#include <fstream>
#include <stdlib.h>
#include <string.h>
#include <sys/ioctl.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>

#include "libcamera/internal/log.h"
#include "libcamera/internal/media_device.h"

namespace libcamera {

LOG_DECLARE_CATEGORY(DeviceEnumerator)

int DeviceEnumeratorSysfs::init()
{
	return 0;
}

int DeviceEnumeratorSysfs::enumerate()
{
	struct dirent *ent;
	DIR *dir;

	static const char * const sysfs_dirs[] = {
		"/sys/subsystem/media/devices",
		"/sys/bus/media/devices",
		"/sys/class/media/devices",
	};

	for (const char *dirname : sysfs_dirs) {
		dir = opendir(dirname);
		if (dir)
			break;
	}

	if (!dir) {
		LOG(DeviceEnumerator, Error)
			<< "No valid sysfs media device directory";
		return -ENODEV;
	}

	while ((ent = readdir(dir)) != nullptr) {
		if (strncmp(ent->d_name, "media", 5))
			continue;

		char *end;
		unsigned int idx = strtoul(ent->d_name + 5, &end, 10);
		if (*end != '\0')
			continue;

		std::string devnode = "/dev/media" + std::to_string(idx);

		/* Verify that the device node exists. */
		struct stat devstat;
		if (stat(devnode.c_str(), &devstat) < 0) {
			LOG(DeviceEnumerator, Warning)
				<< "Device node /dev/media" << idx
				<< " should exist but doesn't";
			continue;
		}

		std::unique_ptr<MediaDevice> media = createDevice(devnode);
		if (!media)
			continue;

		if (populateMediaDevice(media.get()) < 0) {
			LOG(DeviceEnumerator, Warning)
				<< "Failed to populate media device "
				<< media->deviceNode()
				<< " (" << media->driver() << "), skipping";
			continue;
		}

		addDevice(std::move(media));
	}

	closedir(dir);

	return 0;
}

int DeviceEnumeratorSysfs::populateMediaDevice(MediaDevice *media)
{
	/* Associate entities to device node paths. */