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
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
|
#
# Copyright 2020 Joachim Lusiardi
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
import unittest
from struct import pack
import tlv8
class TestTLV8Decode(unittest.TestCase):
def test_zero_input(self):
input_data = b''
result = tlv8.decode(input_data)
self.assertEqual(tlv8.EntryList(), result)
def test_input_to_short_1(self):
input_data = b'\x01'
self.assertRaises(ValueError, tlv8.decode, input_data)
def test_input_to_short_2(self):
input_data = b'\x01\x01'
self.assertRaises(ValueError, tlv8.decode, input_data)
def test_decode_single_entry(self):
input_data = b'\x02\x01\x23'
result = tlv8.decode(input_data)
self.assertEqual(tlv8.EntryList([tlv8.Entry(2, b'\x23')]), result)
def test_decode_single_entry_bytearry(self):
input_data = bytearray(b'\x02\x01\x23')
result = tlv8.decode(input_data)
self.assertEqual(tlv8.EntryList([tlv8.Entry(2, b'\x23')]), result)
def test_decode_2_entries(self):
input_data = b'\x02\x01\x23\x03\x01\x42'
result = tlv8.decode(input_data)
self.assertEqual(tlv8.EntryList([tlv8.Entry(2, b'\x23'), tlv8.Entry(3, b'\x42')]), result)
def test_decode_2_entries_1_expected(self):
input_data = b'\x02\x01\x23\x03\x01\x42'
structure = {
2: tlv8.DataType.INTEGER
}
result = tlv8.decode(input_data, structure)
self.assertEqual(tlv8.EntryList([tlv8.Entry(2, 0x23)]), result)
def test_decode_4(self):
input_data = b'\x01\x01\x23\x02\x03\x04\x01\x42\x01\x01\x23'
structure = {
1: tlv8.DataType.INTEGER,
2: {
4: tlv8.DataType.INTEGER,
}
}
result = tlv8.decode(input_data, structure)
expected = tlv8.EntryList([
tlv8.Entry(1, 0x23),
tlv8.Entry(2, tlv8.EntryList([
tlv8.Entry(4, 0x42),
])),
tlv8.Entry(1, 0x23),
])
self.assertEqual(expected, result)
def test_decode_float(self):
input_data = b'\x01\x04' + pack('<f', 3.141)
structure = {
1: tlv8.DataType.FLOAT,
}
result = tlv8.decode(input_data, structure)
expected = tlv8.EntryList([
tlv8.Entry(1, 3.141),
])
self.assertEqual(expected, result)
def test_decode_example_2(self):
input_data = b'\x01\x01\x00'
structure = {
1: tlv8.DataType.INTEGER,
}
result = tlv8.decode(input_data, structure)
expected = tlv8.EntryList([
tlv8.Entry(1, 0),
])
self.assertEqual(expected, result)
def test_decode_example_3(self):
input_data = b'\x01\x15\x01\x10e\xad\x8b\xe8\xb3fD\xcb\xbde#\xccc\n\xb8\xef\x02\x01\x01'
structure = {
1: {
1: tlv8.DataType.BYTES,
2: tlv8.DataType.INTEGER,
},
2: {
1: tlv8.DataType.INTEGER,
2: tlv8.DataType.BYTES,
3: tlv8.DataType.BYTES,
4: tlv8.DataType.BYTES
},
3: {
1: tlv8.DataType.INTEGER,
2: tlv8.DataType.INTEGER,
3: tlv8.DataType.INTEGER,
4: tlv8.DataType.INTEGER,
5: tlv8.DataType.INTEGER
}
}
result = tlv8.decode(input_data, structure)
expected = tlv8.EntryList([
tlv8.Entry(1, tlv8.EntryList([
tlv8.Entry(1, b'e\xad\x8b\xe8\xb3fD\xcb\xbde#\xccc\n\xb8\xef'),
tlv8.Entry(2, 1),
])),
])
self.assertEqual(expected, result)
def test_decode_257bytes(self):
data = b''
for i in range(0, 257):
data += pack('<B', i % 256)
input_data = b'\x17\xff' + data[0:255] + b'\x17\x02' + data[255:]
result = tlv8.decode(input_data)
expected = tlv8.EntryList([
tlv8.Entry(23, data)
])
self.assertEqual(result, expected)
def test_decode_supported_rtp_configs(self):
data = \
b'\x02\x01\x00' + \
b'\x00\x00' + \
b'\x02\x01\x01'
result = tlv8.decode(data, expected={2: tlv8.DataType.INTEGER})
expected_data = tlv8.EntryList([
tlv8.Entry(2, 0),
tlv8.Entry(2, 1)
])
self.assertEqual(result, expected_data)
def test_encode_supported_video_stream_configuration(self):
data = \
b'\x01\x30' \
b'\x01\x01\x00' \
b'\x02\x0f' \
b'\x01\x01\x00' \
b'\x02\x01\x00' \
b'\x03\x01\x00' \
b'\x04\x01\x01' \
b'\x05\x01\n' \
b'\x03\x0b' \
b'\x01\x02\x00\x05' \
b'\x02\x02 \x03' \
b'\x03\x01\x1e' \
b'\xff\x00' \
b'\x03\x0b' \
b'\x01\x02\x80\x02' \
b'\x02\x02\xe0\x01' \
b'\x03\x01\x1e' \
b'\xff\x00' \
b'\x01\x2d' \
b'\x01\x01\x00' \
b'\x02\x0c' \
b'\x01\x01\x00' \
b'\x02\x01\x00' \
b'\x03\x01\x00' \
b'\x04\x01\x00' \
b'\x03\x0b' \
b'\x01\x02\x00\x05' \
b'\x02\x02 \x03' \
b'\x03\x01\x1e' \
b'\xff\x00' \
b'\x03\x0b' \
b'\x01\x02\x80\x02' \
b'\x02\x02\xe0\x01' \
b'\x03\x01\x1e'
expected_data_video_codec_params = {
1: tlv8.DataType.INTEGER,
2: tlv8.DataType.INTEGER,
3: tlv8.DataType.INTEGER,
4: tlv8.DataType.INTEGER,
5: tlv8.DataType.INTEGER
}
expected_data_video_attribs = {
1: tlv8.DataType.INTEGER,
2: tlv8.DataType.INTEGER,
3: tlv8.DataType.INTEGER
}
expected_data_video_codec_config = {
1: tlv8.DataType.INTEGER,
2: expected_data_video_codec_params,
3: expected_data_video_attribs
}
expected_data_structure = {
1: expected_data_video_codec_config
}
result = tlv8.decode(data, expected_data_structure)
expected_data = tlv8.EntryList([
tlv8.Entry(1, tlv8.EntryList([ # video codec config
tlv8.Entry(1, 0), # h.264
tlv8.Entry(2, tlv8.EntryList([ # video codec param
tlv8.Entry(1, 0), # Constrained Baseline Profile
tlv8.Entry(2, 0), # Level 3.1
tlv8.Entry(3, 0), # Packetization mode: Non-interleaved mode
tlv8.Entry(4, 1), # CVO not enabled
tlv8.Entry(5, 10), # CVO ID
])),
tlv8.Entry(3, tlv8.EntryList([ # video attributes
tlv8.Entry(1, 1280), # width
tlv8.Entry(2, 800), # height
tlv8.Entry(3, 30) # fps
])),
tlv8.Entry(3, tlv8.EntryList([ # video attributes
tlv8.Entry(1, 640), # width
tlv8.Entry(2, 480), # height
tlv8.Entry(3, 30) # fps
]))
])),
tlv8.Entry(1, tlv8.EntryList([
tlv8.Entry(1, 0), # h.264
tlv8.Entry(2, tlv8.EntryList([ # video codec param
tlv8.Entry(1, 0), # Constrained Baseline Profile
tlv8.Entry(2, 0), # Level 3.1
tlv8.Entry(3, 0), # Packetization mode: Non-interleaved mode
tlv8.Entry(4, 0), # CVO not enabled
])),
tlv8.Entry(3, tlv8.EntryList([ # video attributes
tlv8.Entry(1, 1280), # width
tlv8.Entry(2, 800), # height
tlv8.Entry(3, 30) # fps
])),
tlv8.Entry(3, tlv8.EntryList([ # video attributes
tlv8.Entry(1, 640), # width
tlv8.Entry(2, 480), # height
tlv8.Entry(3, 30) # fps
]))
]))
])
self.assertEqual(result, expected_data)
def test_decode_error_1(self):
self.assertRaises(ValueError, tlv8.decode, {})
def test_decode_missing_separator_strict(self):
data = b'\x01\x01\x02\x01\x01\x02'
self.assertRaises(ValueError, tlv8.decode, data, strict_mode=True)
def test_decode_missing_separator_nonstrict(self):
data = b'\x01\x01\x02\x01\x01\x02'
result = tlv8.decode(data, strict_mode=False)
self.assertEqual(result, tlv8.EntryList([tlv8.Entry(1, b'\x02'), tlv8.Entry(1, b'\x02')]))
def test_decode_error_4(self):
data = b'\x01\x02Hi'
result = tlv8.decode(data, {1: tlv8.DataType.STRING})
expected_data = tlv8.EntryList([
tlv8.Entry(1, 'Hi')
])
self.assertEqual(result, expected_data)
def test_decode_error_5(self):
data = b'\x01\x05\x01\x01\x01\x01\x01'
structure = {1: tlv8.DataType.INTEGER}
self.assertRaises(ValueError, tlv8.decode, data, structure)
def test_decode_error_unknown_type(self):
data = b'\x01\x05\x01\x01\x01\x01\x01'
structure = {1: "string"}
with self.assertRaises(ValueError) as error_context:
tlv8.decode(data, structure)
self.assertEqual(str(error_context.exception), 'Decoding failed, unknown data type: string')
|
