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authorLaurent Pinchart <laurent.pinchart@ideasonboard.com>2022-09-04 04:21:18 +0300
committerLaurent Pinchart <laurent.pinchart@ideasonboard.com>2022-09-28 05:41:15 +0300
commit2f1efe50a938b83a6b4b236406b74c20ead29beb (patch)
tree591a55213ff55f5e95324eef950672150d60ea4a /utils/raspberrypi/ctt
parent9b389ce79eb143a82e998bfe5b09470272a25600 (diff)
ipa: rkisp1: awb: Remove bias from gain calculation
The red and blue gains are computed by dividing the green mean by the red and blue means respectively. An offset of 1 is added to the dividers to avoid divisions by zero. This introduces a bias in the gain values. Fix it by clamping the divisors to a minimum of 1.0 instead of adding an offset. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
Diffstat (limited to 'utils/raspberrypi/ctt')
0 files changed, 0 insertions, 0 deletions
generated by cgit v1.2.1 (git 2.18.0) at 2025-06-09 19:09:28 +0000
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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
 * Copyright (C) 2018, Google Inc.
 *
 * camera.h - Camera object interface
 */
#ifndef __LIBCAMERA_CAMERA_H__
#define __LIBCAMERA_CAMERA_H__

#include <memory>
#include <set>
#include <stdint.h>
#include <string>

#include <libcamera/controls.h>
#include <libcamera/object.h>
#include <libcamera/request.h>
#include <libcamera/signal.h>
#include <libcamera/stream.h>
#include <libcamera/transform.h>

namespace libcamera {

class FrameBuffer;
class FrameBufferAllocator;
class PipelineHandler;
class Request;

class CameraConfiguration
{
public:
	enum Status {
		Valid,
		Adjusted,
		Invalid,
	};

	using iterator = std::vector<StreamConfiguration>::iterator;
	using const_iterator = std::vector<StreamConfiguration>::const_iterator;

	virtual ~CameraConfiguration();

	void addConfiguration(const StreamConfiguration &cfg);
	virtual Status validate() = 0;

	StreamConfiguration &at(unsigned int index);
	const StreamConfiguration &at(unsigned int index) const;
	StreamConfiguration &operator[](unsigned int index)
	{
		return at(index);
	}
	const StreamConfiguration &operator[](unsigned int index) const
	{
		return at(index);
	}

	iterator begin();
	const_iterator begin() const;
	iterator end();
	const_iterator end() const;

	bool empty() const;
	std::size_t size() const;

	Transform transform;

protected:
	CameraConfiguration();

	std::vector<StreamConfiguration> config_;
};

class Camera final : public Object, public std::enable_shared_from_this<Camera>
{
public:
	static std::shared_ptr<Camera> create(PipelineHandler *pipe,
					      const std::string &id,