ipa: rpi: Add "focus" algorithm
Adds FocusStatus to the image metadata, containing contrast measurements across the image. Optionally also prints a contrast measure to the console, to aid in manual adjustment of the lens. Note that it is not an actual auto-focus algorithm that can drive a lens! Signed-off-by: David Plowman <david.plowman@raspberrypi.com> Signed-off-by: Naushir Patuck <naush@raspberrypi.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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src/ipa/raspberrypi/controller/focus_status.h
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src/ipa/raspberrypi/controller/focus_status.h
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/* SPDX-License-Identifier: BSD-2-Clause */
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/*
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* Copyright (C) 2020, Raspberry Pi (Trading) Limited
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*
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* focus_status.h - focus measurement status
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*/
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#pragma once
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#include <linux/bcm2835-isp.h>
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// The focus algorithm should post the following structure into the image's
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// "focus.status" metadata. Recall that it's only reporting focus (contrast)
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// measurements, it's not driving any kind of auto-focus algorithm!
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#ifdef __cplusplus
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extern "C" {
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#endif
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struct FocusStatus {
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int num;
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uint32_t focus_measures[FOCUS_REGIONS];
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};
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#ifdef __cplusplus
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}
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#endif
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