basic streaming from webinterface is functioning

src/auracast/multicast.py

@@ -49,9 +49,12 @@ from bumble.audio import io as audio_io
 
 from auracast import auracast_config
 from auracast.utils.read_lc3_file import read_lc3_file
-from auracast.network_audio_receiver import NetworkAudioReceiverUncoded
+from auracast.utils.network_audio_receiver import NetworkAudioReceiverUncoded
+from auracast.utils.webrtc_audio_input import WebRTCAudioInput
 
 
+# Instantiate WebRTC audio input for streaming (can be used per-BIG or globally)
+
 # modified from bumble
 class ModWaveAudioInput(audio_io.ThreadedAudioInput):
     """Audio input that reads PCM samples from a .wav file."""
@@ -357,6 +360,20 @@ class Streamer():
                 big['encoder'] = encoder
                 big['precoded'] = False
 
+            elif audio_source == 'webrtc':
+                big['audio_input'] = WebRTCAudioInput()
+                encoder = lc3.Encoder(
+                    frame_duration_us=global_config.frame_duration_us,
+                    sample_rate_hz=global_config.auracast_sampling_rate_hz,
+                    num_channels=1,
+                    input_sample_rate_hz=48000, # TODO: get samplerate from webrtc
+                )
+                lc3_frame_samples = encoder.get_frame_samples()
+                big['pcm_bit_depth'] = 16
+                big['lc3_frame_samples'] = lc3_frame_samples
+                big['encoder'] = encoder
+                big['precoded'] = False
+
             # precoded lc3 from ram
             elif isinstance(big_config[i].audio_source, bytes):
                 big['precoded'] = True
@@ -470,7 +487,7 @@ class Streamer():
                     if lc3_frame == b'': # Not all streams may stop at the same time
                         stream_finished[i] = True
                         continue
-                else:
+                else: # code lc3 on the fly
                     pcm_frame = await anext(big['audio_input'].frames(big['lc3_frame_samples']), None)
 
                     if pcm_frame is None: # Not all streams may stop at the same time
@@ -483,10 +500,10 @@ class Streamer():
 
                 await big['iso_queue'].write(lc3_frame)
 
-            if all(stream_finished): # Take into account that multiple files have different lengths
-                logging.info('All streams finished, stopping streamer')
-                self.is_streaming = False
-                break
+            # if all(stream_finished): # Take into account that multiple files have different lengths
+            #     logging.info('All streams finished, stopping streamer')
+            #     self.is_streaming = False
+            #     break
 
 
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