wip

tests/codecs_test.py

@@ -0,0 +1,64 @@
+# Copyright 2021-2023 Google LLC
+#
+# 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
+#
+#      https://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.
+
+# -----------------------------------------------------------------------------
+# Imports
+# -----------------------------------------------------------------------------
+import pytest
+from bumble.codecs import AacAudioRtpPacket, BitReader
+
+
+# -----------------------------------------------------------------------------
+def test_reader():
+    reader = BitReader(b'')
+    with pytest.raises(ValueError):
+        reader.read(1)
+
+    reader = BitReader(b'hello')
+    with pytest.raises(ValueError):
+        reader.read(40)
+
+    reader = BitReader(bytes([0xFF]))
+    assert reader.read(1) == 1
+    with pytest.raises(ValueError):
+        reader.read(10)
+
+    reader = BitReader(bytes([0x78]))
+    value = 0
+    for _ in range(8):
+        value = (value << 1) | reader.read(1)
+    assert value == 0x78
+
+
+    data = bytes([x & 0xFF for x in range(66 * 100)])
+    reader = BitReader(data)
+    value = 0
+    for _ in range(100):
+        for bits in range(1, 33):
+            value = value << bits | reader.read(bits)
+    assert value == int.from_bytes(data, byteorder='big')
+
+
+def test_aac_rtp():
+    # pylint: disable=line-too-long
+    packet_data = bytes.fromhex('47fc0000b090800300202066000198000de120000000000000000000000000000000000000000000001c')
+    packet = AacAudioRtpPacket(packet_data)
+    adts = packet.to_adts()
+    assert adts == bytes.fromhex('fff1508004fffc2066000198000de120000000000000000000000000000000000000000000001c')
+
+
+# -----------------------------------------------------------------------------
+if __name__ == '__main__':
+    test_reader()
+    test_aac_rtp()