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path: root/test/camera/camera_test.cpp
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2019-04-09libcamera: Switch to CameraConfigurationNiklas Söderlund
Implement the camera configuration thru out the library, tests, cam and qcam tools. Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2019-04-04test: camera: Remove streams argument from configurationValid()Niklas Söderlund
In preparation of reworking how a default configuration is retrieved from a camera remove the streams and validation using the stream when judging if a camera configuration is valid. This is needed as once stream usage hints are added applications will no longer fetch default configuration based on Stream IDs so using them to verify the returned format is not useful. Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
2019-03-14test: camera: Add read default configuration testNiklas Söderlund
Add a test to verify reading the default configuration from a camera works. Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
generated by cgit v1.2.1 (git 2.18.0) at 2025-04-26 18:41:18 +0000
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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
 * Copyright (C) 2019, Google Inc.
 *
 * uvcvideo.cpp - Pipeline handler for uvcvideo devices
 */

#include <libcamera/camera.h>
#include <libcamera/request.h>
#include <libcamera/stream.h>

#include "device_enumerator.h"
#include "log.h"
#include "media_device.h"
#include "pipeline_handler.h"
#include "v4l2_device.h"

namespace libcamera {

LOG_DEFINE_CATEGORY(UVC)

class PipelineHandlerUVC : public PipelineHandler
{
public:
	PipelineHandlerUVC(CameraManager *manager);
	~PipelineHandlerUVC();

	std::map<Stream *, StreamConfiguration>
	streamConfiguration(Camera *camera,
			    std::vector<Stream *> &streams) override;
	int configureStreams(Camera *camera,
			     std::map<Stream *, StreamConfiguration> &config) override;

	int allocateBuffers(Camera *camera, Stream *stream) override;
	int freeBuffers(Camera *camera, Stream *stream) override;

	int start(const Camera *camera) override;
	void stop(const Camera *camera) override;

	int queueRequest(const Camera *camera, Request *request) override;

	bool match(DeviceEnumerator *enumerator);

private:
	std::shared_ptr<MediaDevice> media_;
	V4L2Device *video_;
	Stream stream_;
};

PipelineHandlerUVC::PipelineHandlerUVC(CameraManager *manager)
	: PipelineHandler(manager), media_(nullptr), video_(nullptr)
{
}

PipelineHandlerUVC::~PipelineHandlerUVC()
{
	if (video_)
		delete video_;

	if (media_)
		media_->release();
}

std::map<Stream *, StreamConfiguration>
PipelineHandlerUVC::streamConfiguration(Camera *camera,
					std::vector<Stream *> &streams)
{
	std::map<Stream *, StreamConfiguration> configs;

	StreamConfiguration config{};

	LOG(UVC, Debug) << "Retrieving default format";
	config.width = 640;
	config.height = 480;
	config.pixelFormat = V4L2_PIX_FMT_YUYV;
	config.bufferCount = 4;

	configs[&stream_] = config;

	return configs;
}

int PipelineHandlerUVC::configureStreams(Camera *camera,
					 std::map<Stream *, StreamConfiguration> &config)
{
	StreamConfiguration *cfg = &config[&stream_];

	LOG(UVC, Debug) << "Configure the camera for resolution "
			<< cfg->width << "x" << cfg->height;

	V4L2DeviceFormat format = {};
	format.width = cfg->width;
	format.height = cfg->height;
	format.fourcc = cfg->pixelFormat;

	return video_->setFormat(&format);
}

int PipelineHandlerUVC::allocateBuffers(Camera *camera, Stream *stream)
{
	const StreamConfiguration &cfg = stream->configuration();

	LOG(UVC, Debug) << "Requesting " << cfg.bufferCount << " buffers";

	return video_->exportBuffers(cfg.bufferCount, &stream->bufferPool());
}

int PipelineHandlerUVC::freeBuffers(Camera *camera, Stream *stream)
{
	return video_->releaseBuffers();
}

int PipelineHandlerUVC::start(const Camera *camera)
{
	return video_->streamOn();
}

void PipelineHandlerUVC::stop(const Camera *camera)
{
	video_->streamOff();
}

int PipelineHandlerUVC::queueRequest(const Camera *camera, Request *request)
{
	Buffer *buffer = request->findBuffer(&stream_);
	if (!buffer) {
		LOG(UVC, Error)
			<< "Attempt to queue request with invalid stream";

		return -ENOENT;
	}

	video_->queueBuffer(buffer);

	return 0;
}

bool PipelineHandlerUVC::match(DeviceEnumerator *enumerator)