forked from auracaster/bumble_mirror
110 lines
3.5 KiB
Python
110 lines
3.5 KiB
Python
# Copyright 2021-2023 Google LLC
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# https://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# -----------------------------------------------------------------------------
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# Imports
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# -----------------------------------------------------------------------------
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import random
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import pytest
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from bumble.codecs import AacAudioRtpPacket, BitReader, BitWriter
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# -----------------------------------------------------------------------------
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def test_reader():
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reader = BitReader(b'')
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with pytest.raises(ValueError):
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reader.read(1)
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reader = BitReader(b'hello')
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with pytest.raises(ValueError):
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reader.read(40)
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reader = BitReader(bytes([0xFF]))
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assert reader.read(1) == 1
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with pytest.raises(ValueError):
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reader.read(10)
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reader = BitReader(bytes([0x78]))
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value = 0
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for _ in range(8):
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value = (value << 1) | reader.read(1)
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assert value == 0x78
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data = bytes([x & 0xFF for x in range(66 * 100)])
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reader = BitReader(data)
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value = 0
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for _ in range(100):
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for bits in range(1, 33):
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value = value << bits | reader.read(bits)
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assert value == int.from_bytes(data, byteorder='big')
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def test_writer():
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writer = BitWriter()
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assert bytes(writer) == b''
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for i in range(100):
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for j in range(1, 10):
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writer = BitWriter()
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chunks = []
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for k in range(j):
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n_bits = random.randint(1, 32)
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random_bits = random.getrandbits(n_bits)
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chunks.append((n_bits, random_bits))
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writer.write(random_bits, n_bits)
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written_data = bytes(writer)
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reader = BitReader(written_data)
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for n_bits, written_bits in chunks:
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read_bits = reader.read(n_bits)
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assert read_bits == written_bits
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def test_aac_rtp():
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# pylint: disable=line-too-long
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packet_data = bytes.fromhex(
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'47fc0000b090800300202066000198000de120000000000000000000000000000000000000000000001c'
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)
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packet = AacAudioRtpPacket.from_bytes(packet_data)
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adts = packet.to_adts()
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assert adts == bytes.fromhex(
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'fff1508004fffc2066000198000de120000000000000000000000000000000000000000000001c'
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)
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payload = bytes(list(range(1, 200)))
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rtp = AacAudioRtpPacket.for_simple_aac(44100, 2, payload)
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assert rtp.audio_mux_element.payload == payload
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assert (
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rtp.audio_mux_element.stream_mux_config.audio_specific_config.sampling_frequency
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== 44100
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)
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assert (
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rtp.audio_mux_element.stream_mux_config.audio_specific_config.channel_configuration
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== 2
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)
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rtp2 = AacAudioRtpPacket.from_bytes(bytes(rtp))
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assert str(rtp2.audio_mux_element.stream_mux_config) == str(
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rtp.audio_mux_element.stream_mux_config
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)
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assert rtp2.audio_mux_element.payload == rtp.audio_mux_element.payload
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# -----------------------------------------------------------------------------
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if __name__ == '__main__':
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test_reader()
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test_writer()
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test_aac_rtp()
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