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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Copyright (C) 2019, Google Inc.
*
* control_serialization.cpp - Serialize and deserialize controls
*/
#include <iostream>
#include <libcamera/camera.h>
#include <libcamera/control_ids.h>
#include <libcamera/controls.h>
#include "libcamera/internal/byte_stream_buffer.h"
#include "libcamera/internal/control_serializer.h"
#include "serialization_test.h"
#include "test.h"
using namespace std;
using namespace libcamera;
class ControlSerializationTest : public SerializationTest
{
protected:
int init() override
{
return status_;
}
int run() override
{
ControlSerializer serializer;
ControlSerializer deserializer;
std::vector<uint8_t> infoData;
std::vector<uint8_t> listData;
size_t size;
int ret;
/* Create a control list with three controls. */
const ControlInfoMap &infoMap = camera_->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;
}
/* Make sure control limits looked up by id are not changed. */
const ControlInfo &newLimits = newInfoMap.at(&controls::Brightness);
const ControlInfo &initialLimits = infoMap.at(&controls::Brightness);
if (newLimits.min() != initialLimits.min() ||
newLimits.max() != initialLimits.max()) {
cerr << "The brightness control limits have changed" << 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)
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