feat(users/flokli/ipu6-softisp): init r/7454

This code adds support for the ipu6 webcams via libcamera, based on the work in
https://copr.fedorainfracloud.org/coprs/jwrdegoede/ipu6-softisp/.

It's supposed to be included in your NixOS configuration imports.

Change-Id: Ifb71999ad61161fa23506b97cb449f73fb1270e3
Reviewed-on: https://cl.tvl.fyi/c/depot/+/10709
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
Autosubmit: flokli <flokli@flokli.de>

1 files changed, 272 insertions, 0 deletions

diff --git a/users/flokli/ipu6-softisp/libcamera/0009-libcamera-software_isp-Add-Debayer-base-class.patch b/users/flokli/ipu6-softisp/libcamera/0009-libcamera-software_isp-Add-Debayer-base-class.patch
new file mode 100644
index 000000000000..f43b3368e616
--- /dev/null
+++ b/users/flokli/ipu6-softisp/libcamera/0009-libcamera-software_isp-Add-Debayer-base-class.patch
@@ -0,0 +1,272 @@
+From 8fc77447c0d76b0b52b19d23674049181c6cf8d2 Mon Sep 17 00:00:00 2001
+From: Hans de Goede <hdegoede@redhat.com>
+Date: Mon, 11 Dec 2023 14:46:53 +0100
+Subject: [PATCH 09/25] libcamera: software_isp: Add Debayer base class
+
+Add a base class for debayer implementations. This is intended to be
+suitable for both GPU (or otherwise) accelerated debayer implementations
+as well as CPU based debayering.
+
+Doxygen documentation by Dennis Bonke.
+
+Co-authored-by: Dennis Bonke <admin@dennisbonke.com>
+Signed-off-by: Dennis Bonke <admin@dennisbonke.com>
+Co-authored-by: Andrey Konovalov <andrey.konovalov@linaro.org>
+Signed-off-by: Andrey Konovalov <andrey.konovalov@linaro.org>
+Signed-off-by: Hans de Goede <hdegoede@redhat.com>
+Tested-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org> # sc8280xp Lenovo x13s
+Tested-by: Pavel Machek <pavel@ucw.cz>
+---
+ .../libcamera/internal/software_isp/debayer.h | 132 ++++++++++++++++++
+ .../internal/software_isp/debayer_params.h    |  43 ++++++
+ .../internal/software_isp/meson.build         |   2 +
+ src/libcamera/software_isp/debayer.cpp        |  22 +++
+ src/libcamera/software_isp/meson.build        |   1 +
+ 5 files changed, 200 insertions(+)
+ create mode 100644 include/libcamera/internal/software_isp/debayer.h
+ create mode 100644 include/libcamera/internal/software_isp/debayer_params.h
+ create mode 100644 src/libcamera/software_isp/debayer.cpp
+
+diff --git a/include/libcamera/internal/software_isp/debayer.h b/include/libcamera/internal/software_isp/debayer.h
+new file mode 100644
+index 00000000..39e6f393
+--- /dev/null
++++ b/include/libcamera/internal/software_isp/debayer.h
+@@ -0,0 +1,132 @@
++/* SPDX-License-Identifier: LGPL-2.1-or-later */
++/*
++ * Copyright (C) 2023, Linaro Ltd
++ * Copyright (C) 2023, Red Hat Inc.
++ *
++ * Authors:
++ * Hans de Goede <hdegoede@redhat.com> 
++ *
++ * debayer.h - debayering base class
++ */
++
++#pragma once
++
++#include <stdint.h>
++
++#include <libcamera/base/log.h>
++#include <libcamera/base/signal.h>
++
++#include <libcamera/geometry.h>
++#include <libcamera/stream.h>
++
++#include "libcamera/internal/software_isp/debayer_params.h"
++
++namespace libcamera {
++
++class FrameBuffer;
++
++LOG_DECLARE_CATEGORY(Debayer)
++
++/**
++ * \class Debayer
++ * \brief Base debayering class
++ *
++ * Base class that provides functions for setting up the debayering process.
++ */
++class Debayer
++{
++public:
++	virtual ~Debayer() = 0;
++
++	/**
++	 * \brief Configure the debayer object according to the passed in parameters.
++	 * \param[in] inputCfg The input configuration.
++	 * \param[in] outputCfgs The output configurations.
++	 *
++	 * \return 0 on success, a negative errno on failure.
++	 */
++	virtual int configure(const StreamConfiguration &inputCfg,
++			      const std::vector<std::reference_wrapper<StreamConfiguration>> &outputCfgs) = 0;
++
++	/**
++	 * \brief Get the width and height at which the bayer pattern repeats.
++	 * \param[in] inputFormat The input format.
++	 *
++	 * \return pattern size or an empty size for unsupported inputFormats.
++	 */
++	virtual Size patternSize(PixelFormat inputFormat) = 0;
++
++	/**
++	 * \brief Get the supported output formats.
++	 * \param[in] inputFormat The input format.
++	 *
++	 * \return all supported output formats or an empty vector if there are none.
++	 */
++	virtual std::vector<PixelFormat> formats(PixelFormat inputFormat) = 0;
++
++	/**
++	 * \brief Get the stride and the frame size.
++	 * \param[in] outputFormat The output format.
++	 * \param[in] size The output size.
++	 *
++	 * \return a tuple of the stride and the frame size, or a tuple with 0,0 if there is no valid output config.
++	 */
++	virtual std::tuple<unsigned int, unsigned int>
++		strideAndFrameSize(const PixelFormat &outputFormat, const Size &size) = 0;
++
++	/**
++	 * \brief Process the bayer data into the requested format.
++	 * \param[in] input The input buffer.
++	 * \param[in] output The output buffer.
++	 * \param[in] params The parameters to be used in debayering.
++	 *
++	 * \note DebayerParams is passed by value deliberately so that a copy is passed
++	 * when this is run in another thread by invokeMethod().
++	 */
++	virtual void process(FrameBuffer *input, FrameBuffer *output, DebayerParams params) = 0;
++
++	/**
++	 * \brief Get the supported output sizes for the given input format and size.
++	 * \param[in] inputFormat The input format.
++	 * \param[in] inputSize The input size.
++	 *
++	 * \return The valid size ranges or an empty range if there are none.
++	 */
++	SizeRange sizes(PixelFormat inputFormat, const Size &inputSize)
++	{
++		Size pattern_size = patternSize(inputFormat);
++
++		if (pattern_size.isNull())
++			return {};
++
++		/*
++		 * For debayer interpolation a border of pattern-height x pattern-width
++		 * is kept around the entire image. Combined with a minimum-size of
++		 * pattern-height x pattern-width this means the input-size needs to be
++		 * at least (3 * pattern-height) x (3 * pattern-width).
++		 */
++		if (inputSize.width < (3 * pattern_size.width) ||
++		    inputSize.height < (3 * pattern_size.height)) {
++			LOG(Debayer, Warning)
++				<< "Input format size too small: " << inputSize.toString();
++			return {};
++		}
++
++		return SizeRange(Size(pattern_size.width, pattern_size.height),
++				 Size((inputSize.width - 2 * pattern_size.width) & ~(pattern_size.width - 1),
++				      (inputSize.height - 2 * pattern_size.height) & ~(pattern_size.height - 1)),
++				 pattern_size.width, pattern_size.height);
++	}
++
++	/**
++	 * \brief Signals when the input buffer is ready.
++	 */
++	Signal<FrameBuffer *> inputBufferReady;
++
++	/**
++	 * \brief Signals when the output buffer is ready.
++	 */
++	Signal<FrameBuffer *> outputBufferReady;
++};
++
++} /* namespace libcamera */
+diff --git a/include/libcamera/internal/software_isp/debayer_params.h b/include/libcamera/internal/software_isp/debayer_params.h
+new file mode 100644
+index 00000000..8f515304
+--- /dev/null
++++ b/include/libcamera/internal/software_isp/debayer_params.h
+@@ -0,0 +1,43 @@
++/* SPDX-License-Identifier: LGPL-2.1-or-later */
++/*
++ * Copyright (C) 2023, Red Hat Inc.
++ *
++ * Authors:
++ * Hans de Goede <hdegoede@redhat.com> 
++ *
++ * swstats.h - software statistics base class
++ */
++
++#pragma once
++
++namespace libcamera {
++
++/**
++ * \brief Struct to hold the debayer parameters.
++ */
++struct DebayerParams {
++	/**
++	 * \brief Red Gain.
++	 *
++	 * 128 = 0.5, 256 = 1.0, 512 = 2.0, etc.
++	 */
++	unsigned int gainR;
++	/**
++	 * \brief Green Gain.
++	 *
++	 * 128 = 0.5, 256 = 1.0, 512 = 2.0, etc.
++	 */
++	unsigned int gainG;
++	/**
++	 * \brief Blue Gain.
++	 *
++	 * 128 = 0.5, 256 = 1.0, 512 = 2.0, etc.
++	 */
++	unsigned int gainB;
++	/**
++	 * \brief Gamma correction, 1.0 is no correction.
++	 */
++	float gamma;
++};
++
++} /* namespace libcamera */
+diff --git a/include/libcamera/internal/software_isp/meson.build b/include/libcamera/internal/software_isp/meson.build
+index 1d9e4018..7e40925e 100644
+--- a/include/libcamera/internal/software_isp/meson.build
++++ b/include/libcamera/internal/software_isp/meson.build
+@@ -1,6 +1,8 @@
+ # SPDX-License-Identifier: CC0-1.0
+ 
+ libcamera_internal_headers += files([
++    'debayer.h',
++    'debayer_params.h',
+     'swisp_stats.h',
+     'swstats.h',
+     'swstats_cpu.h',
+diff --git a/src/libcamera/software_isp/debayer.cpp b/src/libcamera/software_isp/debayer.cpp
+new file mode 100644
+index 00000000..442da1ac
+--- /dev/null
++++ b/src/libcamera/software_isp/debayer.cpp
+@@ -0,0 +1,22 @@
++/* SPDX-License-Identifier: LGPL-2.1-or-later */
++/*
++ * Copyright (C) 2023, Linaro Ltd
++ * Copyright (C) 2023, Red Hat Inc.
++ *
++ * Authors:
++ * Hans de Goede <hdegoede@redhat.com> 
++ *
++ * debayer.cpp - debayer base class
++ */
++
++#include "libcamera/internal/software_isp/debayer.h"
++
++namespace libcamera {
++
++LOG_DEFINE_CATEGORY(Debayer)
++
++Debayer::~Debayer()
++{
++}
++
++} /* namespace libcamera */
+diff --git a/src/libcamera/software_isp/meson.build b/src/libcamera/software_isp/meson.build
+index d31c6217..d4ae5ac7 100644
+--- a/src/libcamera/software_isp/meson.build
++++ b/src/libcamera/software_isp/meson.build
+@@ -1,6 +1,7 @@
+ # SPDX-License-Identifier: CC0-1.0
+ 
+ libcamera_sources += files([
++	'debayer.cpp',
+ 	'swstats.cpp',
+ 	'swstats_cpu.cpp',
+ ])
+-- 
+2.43.0
+