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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
 * Copyright (C) 2019, Google Inc.
 *
 * libcamera V4L2 API tests
 *
 * Validate the function of exporting buffers from a V4L2VideoDevice and
 * the ability to import them to another V4L2VideoDevice instance.
 * Ensure that the Buffers can successfully be queued and dequeued
 * between both devices.
 */

#include <iostream>

#include <libcamera/buffer.h>

#include "libcamera/internal/event_dispatcher.h"
#include "libcamera/internal/thread.h"
#include "libcamera/internal/timer.h"

#include "v4l2_videodevice_test.h"

class BufferSharingTest : public V4L2VideoDeviceTest
{
public:
	BufferSharingTest()
		: V4L2VideoDeviceTest("vivid", "vivid-000-vid-cap"),
		  output_(nullptr), framesCaptured_(0), framesOutput_(0) {}

protected:
	int init()
	{
		int ret = V4L2VideoDeviceTest::init();
		if (ret)
			return ret;

		/* media_ already represents VIVID */
		MediaEntity *entity = media_->getEntityByName("vivid-000-vid-out");
		if (!entity)
			return TestSkip;

		output_ = new V4L2VideoDevice(entity);
		if (!output_) {
			std::cout << "Failed to create output device" << std::endl;
			return TestFail;
		}

		ret = output_->open();
		if (ret) {
			std::cout << "Failed to open output device" << std::endl;
			return TestFail;
		}

		V4L2DeviceFormat format = {};

		ret = capture_->getFormat(&format);
		if (ret) {
			std::cout << "Failed to get capture format" << std::endl;
			return TestFail;
		}

		format.size.width = 320;
		format.size.height = 180;

		ret = capture_->setFormat(&format);
		if (ret) {
			std::cout << "Failed to set capture format" << std::endl;
			return TestFail;
		}

		ret = output_->setFormat(&format);
		if (ret) {
			std::cout << "Failed to set output format" << std::endl;
			return TestFail;
		}

		ret = capture_->allocateBuffers(bufferCount, &buffers_);
		if (ret < 0) {
			std::cout << "Failed to allocate buffers" << std::endl;
			return TestFail;
		}

		ret = output_->importBuffers(bufferCount);
		if (ret < 0) {
			std::cout << "Failed to import buffers" << std::endl;
			return TestFail;