wip

tests/codecs_test.py

@@ -15,8 +15,9 @@
 # -----------------------------------------------------------------------------
 # Imports
 # -----------------------------------------------------------------------------
+import random
 import pytest
-from bumble.codecs import AacAudioRtpPacket, BitReader
+from bumble.codecs import AacAudioRtpPacket, BitReader, BitWriter
 
 
 # -----------------------------------------------------------------------------
@@ -49,19 +50,58 @@ def test_reader():
     assert value == int.from_bytes(data, byteorder='big')
 
 
+def test_writer():
+    writer = BitWriter()
+    assert bytes(writer) == b''
+
+    for i in range(100):
+        for j in range(1, 10):
+            writer = BitWriter()
+            chunks = []
+            for k in range(j):
+                n_bits = random.randint(1, 32)
+                random_bits = random.getrandbits(n_bits)
+                chunks.append((n_bits, random_bits))
+                writer.write(random_bits, n_bits)
+
+            written_data = bytes(writer)
+            reader = BitReader(written_data)
+            for n_bits, written_bits in chunks:
+                read_bits = reader.read(n_bits)
+                assert read_bits == written_bits
+
+
 def test_aac_rtp():
     # pylint: disable=line-too-long
     packet_data = bytes.fromhex(
         '47fc0000b090800300202066000198000de120000000000000000000000000000000000000000000001c'
     )
-    packet = AacAudioRtpPacket(packet_data)
+    packet = AacAudioRtpPacket.from_bytes(packet_data)
     adts = packet.to_adts()
     assert adts == bytes.fromhex(
         'fff1508004fffc2066000198000de120000000000000000000000000000000000000000000001c'
     )
 
+    payload = bytes(list(range(1, 200)))
+    rtp = AacAudioRtpPacket.for_simple_aac(44100, 2, payload)
+    assert rtp.audio_mux_element.payload == payload
+    assert (
+        rtp.audio_mux_element.stream_mux_config.audio_specific_config.sampling_frequency
+        == 44100
+    )
+    assert (
+        rtp.audio_mux_element.stream_mux_config.audio_specific_config.channel_configuration
+        == 2
+    )
+    rtp2 = AacAudioRtpPacket.from_bytes(bytes(rtp))
+    assert str(rtp2.audio_mux_element.stream_mux_config) == str(
+        rtp.audio_mux_element.stream_mux_config
+    )
+    assert rtp2.audio_mux_element.payload == rtp.audio_mux_element.payload
+
 
 # -----------------------------------------------------------------------------
 if __name__ == '__main__':
     test_reader()
+    test_writer()
     test_aac_rtp()