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authorLaurent Pinchart <laurent.pinchart@ideasonboard.com>2024-11-16 21:02:52 +0200
committerLaurent Pinchart <laurent.pinchart@ideasonboard.com>2024-11-26 19:05:18 +0200
commitbc10ffca97fffe6d5ee9a7a054fb05bba13607a8 (patch)
treef4a8fc6c31b5d221dfd32871823d372b29ca8fa4 /src/ipa/rkisp1/utils.cpp
parent6089b5bc9429e707e9b535feef6c0d9557622895 (diff)
ipa: libipa: vector: Add r(), g() and b() accessors
The Vector class can be useful to represent RGB pixel values. Add r(), g() and b() accessors, similar to x(), y() and z(), along with an RGB type that aliases Vector<T, 3>. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Milan Zamazal <mzamazal@redhat.com>
Diffstat (limited to 'src/ipa/rkisp1/utils.cpp')
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generated by cgit v1.2.1 (git 2.18.0) at 2025-02-23 10:09:27 +0000
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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
 * Copyright (C) 2020, Google Inc.
 *
 * JPEG Post Processor
 */

#include "post_processor_jpeg.h"

#include <chrono>

#include "../camera_device.h"
#include "../camera_metadata.h"
#include "../camera_request.h"
#if defined(OS_CHROMEOS)
#include "encoder_jea.h"
#else /* !defined(OS_CHROMEOS) */
#include "encoder_libjpeg.h"
#endif
#include "exif.h"

#include <libcamera/base/log.h>

#include <libcamera/formats.h>

using namespace libcamera;
using namespace std::chrono_literals;

LOG_DEFINE_CATEGORY(JPEG)

PostProcessorJpeg::PostProcessorJpeg(CameraDevice *const device)
	: cameraDevice_(device)
{
}

int PostProcessorJpeg::configure(const StreamConfiguration &inCfg,
				 const StreamConfiguration &outCfg)
{
	if (inCfg.size != outCfg.size) {
		LOG(JPEG, Error) << "Mismatch of input and output stream sizes";
		return -EINVAL;
	}

	if (outCfg.pixelFormat != formats::MJPEG) {
		LOG(JPEG, Error) << "Output stream pixel format is not JPEG";
		return -EINVAL;
	}

	streamSize_ = outCfg.size;

	thumbnailer_.configure(inCfg.size, inCfg.pixelFormat);

#if defined(OS_CHROMEOS)
	encoder_ = std::make_unique<EncoderJea>();
#else /* !defined(OS_CHROMEOS) */
	encoder_ = std::make_unique<EncoderLibJpeg>();
#endif

	return encoder_->configure(inCfg);
}

void PostProcessorJpeg::generateThumbnail(const FrameBuffer &source,
					  const Size &targetSize,
					  unsigned int quality,
					  std::vector<unsigned char> *thumbnail)
{
	/* Stores the raw scaled-down thumbnail bytes. */
	std::vector<unsigned char> rawThumbnail;

	thumbnailer_.createThumbnail(source, targetSize, &rawThumbnail);

	StreamConfiguration thCfg;
	thCfg.size = targetSize;
	thCfg.pixelFormat = thumbnailer_.pixelFormat();
	int ret = thumbnailEncoder_.configure(thCfg);

	if (!rawThumbnail.empty() && !ret) {
		/*
		 * \todo Avoid value-initialization of all elements of the
		 * vector.
		 */
		thumbnail->resize(rawThumbnail.size());

		/*
		 * Split planes manually as the encoder expects a vector of
		 * planes.
		 *
		 * \todo Pass a vector of planes directly to
		 * Thumbnailer::createThumbnailer above and remove the manual
		 * planes split from here.
		 */
		std::vector<Span<uint8_t>> thumbnailPlanes;
		const PixelFormatInfo &formatNV12 = PixelFormatInfo::info(formats::NV12);
		size_t yPlaneSize = formatNV12.planeSize(targetSize, 0);
		size_t uvPlaneSize = formatNV12.planeSize(targetSize, 1);
		thumbnailPlanes.push_back({ rawThumbnail.data(), yPlaneSize });
		thumbnailPlanes.push_back({ rawThumbnail.data() + yPlaneSize, uvPlaneSize });

		int jpeg_size = thumbnailEncoder_.encode(thumbnailPlanes,
							 *thumbnail, {}, quality);
		thumbnail->resize(jpeg_size);

		LOG(JPEG, Debug)
			<< "Thumbnail compress returned "
			<< jpeg_size << " bytes";
	}
}

void PostProcessorJpeg::process(Camera3RequestDescriptor::StreamBuffer *streamBuffer)
{
	ASSERT(encoder_);

	const FrameBuffer &source = *streamBuffer->srcBuffer;
	CameraBuffer *destination = streamBuffer->dstBuffer.get();

	ASSERT(destination->numPlanes() == 1);

	const CameraMetadata &requestMetadata = streamBuffer->request->settings_;
	CameraMetadata *resultMetadata = streamBuffer->request->resultMetadata_.get();
	camera_metadata_ro_entry_t entry;
	int ret;

	/* Set EXIF metadata for various tags. */
	Exif exif;
	exif.setMake(cameraDevice_->maker());
	exif.setModel(cameraDevice_->model());

	ret = requestMetadata.getEntry(ANDROID_JPEG_ORIENTATION, &entry);

	const uint32_t jpegOrientation = ret ? *entry.data.i32 : 0;
	resultMetadata->addEntry(ANDROID_JPEG_ORIENTATION, jpegOrientation);
	exif.setOrientation(jpegOrientation);

	exif.setSize(streamSize_);
	/*
	 * We set the frame's EXIF timestamp as the time of encode.
	 * Since the precision we need for EXIF timestamp is only one
	 * second, it is good enough.
	 */
	exif.setTimestamp(std::time(nullptr), 0ms);

	ret = resultMetadata->getEntry(ANDROID_SENSOR_EXPOSURE_TIME, &entry);
	exif.setExposureTime(ret ? *entry.data.i64 : 0);
	ret = requestMetadata.getEntry(ANDROID_LENS_APERTURE, &entry);
	if (ret)
		exif.setAperture(*entry.data.f);

	ret = resultMetadata->getEntry(ANDROID_SENSOR_SENSITIVITY, &entry);
	exif.setISO(ret ? *entry.data.i32 : 100);

	exif.setFlash(Exif::Flash::FlashNotPresent);
	exif.setWhiteBalance(Exif::WhiteBalance::Auto);

	exif.setFocalLength(1.0);

	ret = requestMetadata.getEntry(ANDROID_JPEG_GPS_TIMESTAMP, &entry);
	if (ret) {
		exif.setGPSDateTimestamp(*entry.data.i64);
		resultMetadata->addEntry(ANDROID_JPEG_GPS_TIMESTAMP,
					 *entry.data.i64);
	}

	ret = requestMetadata.getEntry(ANDROID_JPEG_THUMBNAIL_SIZE, &entry);
	if (ret) {
		const int32_t *data = entry.data.i32;
		Size thumbnailSize = { static_cast<uint32_t>(data[0]),
				       static_cast<uint32_t>(data[1]) };

		ret = requestMetadata.getEntry(ANDROID_JPEG_THUMBNAIL_QUALITY, &entry);