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authorJean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com>2021-08-20 08:34:25 +0200
committerJean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com>2021-08-20 12:11:29 +0200
commit4eb4073ec708ba1e4b4ef0375496dedc1308b3dc (patch)
treecc1dd6e9340a2fd21bd5bf716d8d0b8677836cc9 /src/ipa/ipu3/meson.build
parentfcf56b9716ad5722e21d2d345a8708c21c88ae03 (diff)
ipa: ipu3: convert AWB to the new algorithm interface
When the stats are received, pass them with the context to the existing AWB algorithm. IPAFrameContext now has a new structure to store the gains calculated by the AWB algorithm. When an EventFillParams event is received, call prepare() and set the new gains accordingly in the params structure. There is no more a need for the IPU3Awb::initialise() function, as the params are always set in prepare(). Signed-off-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
 * Copyright (C) 2019, Google Inc.
 *
 * request.cpp - Capture request handling
 */

#include <libcamera/request.h>

#include <map>

#include <libcamera/buffer.h>
#include <libcamera/camera.h>
#include <libcamera/control_ids.h>
#include <libcamera/stream.h>

#include "camera_controls.h"
#include "log.h"

/**
 * \file request.h
 * \brief Describes a frame capture request to be processed by a camera
 */

namespace libcamera {

LOG_DEFINE_CATEGORY(Request)

/**
 * \enum Request::Status
 * Request completion status
 * \var Request::RequestPending
 * The request hasn't completed yet
 * \var Request::RequestComplete
 * The request has completed
 * \var Request::RequestCancelled
 * The request has been cancelled due to capture stop
 */

/**
 * \class Request
 * \brief A frame capture request
 *
 * A Request allows an application to associate buffers and controls on a
 * per-frame basis to be queued to the camera device for processing.
 */

/**
 * \brief Create a capture request for a camera
 * \param[in] camera The camera that creates the request
 * \param[in] cookie Opaque cookie for application use
 *
 * The \a cookie is stored in the request and is accessible through the
 * cookie() method at any time. It is typically used by applications to map the
 * request to an external resource in the request completion handler, and is
 * completely opaque to libcamera.
 *
 */
Request::Request(Camera *camera, uint64_t cookie)
	: camera_(camera), cookie_(cookie), status_(RequestPending),
	  cancelled_(false)
{
	/**
	 * \todo Should the Camera expose a validator instance, to avoid
	 * creating a new instance for each request?
	 */
	validator_ = new CameraControlValidator(camera);
	controls_ = new ControlList(controls::controls, validator_);

	/**
	 * \todo: Add a validator for metadata controls.
	 */
	metadata_ = new ControlList(controls::controls);
}

Request::~Request()
{
	delete metadata_;
	delete controls_;
	delete validator_;
}

/**
 * \fn Request::controls()
 * \brief Retrieve the request's ControlList
 *
 * Requests store a list of controls to be applied to all frames captured for
 * the request. They are created with an empty list of controls that can be
 * accessed through this method and updated with ControlList::operator[]() or
 * ControlList::update().
 *
 * Only controls supported by the camera to which this request will be
 * submitted shall be included in the controls list. Attempting to add an
 * unsupported control causes undefined behaviour.
 *
 * \return A reference to the ControlList in this request
 */

/**
 * \fn Request::buffers()
 * \brief Retrieve the request's streams to buffers map
 *
 * Return a reference to the map that associates each Stream part of the
 * request to the FrameBuffer the Stream output should be directed to.
 *
 * \return The map of Stream to FrameBuffer
 */

/**
 * \brief Add a FrameBuffer with its associated Stream to the Request
 * \param[in] stream The stream the buffer belongs to
 * \param[in] buffer The FrameBuffer to add to the request