test/serialization/control_serialization.cpp


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166

/* 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 "byte_stream_buffer.h"
#include "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, 255);
		list.set(controls::Contrast, 128);
		list.set(controls::Saturation, 50);

		/*
		 * 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)