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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
 * Copyright (C) 2019, Google Inc.
 *
 * v4l2_subdevice_test.cpp - VIMC-based V4L2 subdevice test
 */

#include <iostream>
#include <string.h>
#include <sys/stat.h>

#include "libcamera/internal/device_enumerator.h"
#include "libcamera/internal/media_device.h"
#include "libcamera/internal/v4l2_subdevice.h"

#include "v4l2_subdevice_test.h"

using namespace std;
using namespace libcamera;

/*
 * This test runs on vimc media device. For a description of vimc, in the
 * context of libcamera testing, please refer to
 * 'test/media_device/media_device_link_test.cpp' file.
 *
 * If the vimc module is not loaded, the test gets skipped.
 */

int V4L2SubdeviceTest::init()
{
	enumerator_ = DeviceEnumerator::create();
	if (!enumerator_) {
		cerr << "Failed to create device enumerator" << endl;
		return TestFail;
	}

	if (enumerator_->enumerate()) {
		cerr << "Failed to enumerate media devices" << endl;
		return TestFail;
	}

	DeviceMatch dm("vimc");
	media_ = enumerator_->search(dm);
	if (!media_) {
		cerr << "Unable to find \'vimc\' media device node" << endl;
		return TestSkip;
	}

	MediaEntity *videoEntity = media_->getEntityByName("Scaler");
	if (!videoEntity) {
		cerr << "Unable to find media entity 'Scaler'" << endl;
		return TestFail;
	}

	scaler_ = new V4L2Subdevice(videoEntity);
	if (scaler_->open()) {
		cerr << "Unable to open video subdevice "
		     << scaler_->entity()->deviceNode() << endl;
		return TestSkip;
	}

	return 0;
}

void V4L2SubdeviceTest::cleanup()
{
	delete scaler_;
}
opt">->controls(); ControlList list(infoMap); list.set(controls::Brightness, 0.5f); list.set(controls::Contrast, 1.2f); list.set(controls::Saturation, 0.2f); /* * Serialize the control list, this should fail as the control * info map hasn't been serialized. */ size = serializer.binarySize(list); listData.resize(size); ByteStreamBuffer buffer(listData.data(), listData.size()); ret = serializer.serialize(list, buffer); if (!ret) { cerr << "List serialization without info map should have failed" << endl; return TestFail; } if (buffer.overflow() || buffer.offset()) { cerr << "Failed list serialization modified the buffer" << endl; return TestFail; } /* Serialize the control info map. */ size = serializer.binarySize(infoMap); infoData.resize(size); buffer = ByteStreamBuffer(infoData.data(), infoData.size()); ret = serializer.serialize(infoMap, buffer); if (ret < 0) { cerr << "Failed to serialize ControlInfoMap" << endl; return TestFail; } if (buffer.overflow()) { cerr << "Overflow when serializing ControlInfoMap" << endl; return TestFail; } /* Serialize the control list, this should now succeed. */ size = serializer.binarySize(list); listData.resize(size); buffer = ByteStreamBuffer(listData.data(), listData.size()); ret = serializer.serialize(list, buffer); if (ret) { cerr << "Failed to serialize ControlList" << endl; return TestFail; } if (buffer.overflow()) { cerr << "Overflow when serializing ControlList" << endl; return TestFail; } /* * Deserialize the control list, this should fail as the control * info map hasn't been deserialized. */ buffer = ByteStreamBuffer(const_cast<const uint8_t *>(listData.data()), listData.size()); ControlList newList = deserializer.deserialize<ControlList>(buffer); if (!newList.empty()) { cerr << "List deserialization without info map should have failed" << endl; return TestFail; } if (buffer.overflow()) { cerr << "Failed list deserialization modified the buffer" << endl; return TestFail; } /* Deserialize the control info map and verify the contents. */ buffer = ByteStreamBuffer(const_cast<const uint8_t *>(infoData.data()), infoData.size()); ControlInfoMap newInfoMap = deserializer.deserialize<ControlInfoMap>(buffer); if (newInfoMap.empty()) { cerr << "Failed to deserialize ControlInfoMap" << endl; return TestFail; } if (buffer.overflow()) { cerr << "Overflow when deserializing ControlInfoMap" << endl; return TestFail; } if (!equals(infoMap, newInfoMap)) { cerr << "Deserialized map doesn't match original" << endl; return TestFail; } /* Deserialize the control list and verify the contents. */ buffer = ByteStreamBuffer(const_cast<const uint8_t *>(listData.data()), listData.size()); newList = deserializer.deserialize<ControlList>(buffer); if (newList.empty()) { cerr << "Failed to deserialize ControlList" << endl; return TestFail; } if (buffer.overflow()) { cerr << "Overflow when deserializing ControlList" << endl; return TestFail; } if (!equals(list, newList)) { cerr << "Deserialized list doesn't match original" << endl; return TestFail; } return TestPass; } }; TEST_REGISTER(ControlSerializationTest)