auracaster/bumble-auracast
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delay method wip save to test no thread method.

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This commit is contained in:
Pbopbo
2026-03-24 13:14:56 +01:00
parent 1687a2b790
commit cdfecaf5eb
3 changed files with 98 additions and 29 deletions
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117
src/auracast/multicast.py
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@@ -155,11 +155,13 @@ class PyAlsaAudioInput(audio_io.ThreadedAudioInput):
self._callback_thread = None
self._actual_channels = None
self._periodsize = None
self._buffer_log_last_ts = time.monotonic()
self._buffer_log_max_last_sec = 0
def _open(self) -> audio_io.PcmFormat:
# ========== LATENCY CONFIGURATION ==========
# Adjust these parameters to tune latency vs stability
ALSA_PERIODSIZE = 120 # Samples per ALSA read (240@48kHz = 5ms, 120 = 2.5ms, 96 = 2ms)
ALSA_PERIODSIZE = 96 # Samples per ALSA read (240@48kHz = 5ms, 120 = 2.5ms, 96 = 2ms)
ALSA_PERIODS = 2 # Number of periods in ALSA buffer (lower = less latency, more risk of underrun)
# Ring buffer: keep only 3 periods max to minimize latency (safety margin only)
# ===========================================
@@ -168,22 +170,19 @@ class PyAlsaAudioInput(audio_io.ThreadedAudioInput):
requested_channels = int(self._pcm_format.channels)
self._periodsize = ALSA_PERIODSIZE
# Max ring buffer = 3 periods worth of data (tight coupling, minimal latency)
self._max_buffer_bytes = ALSA_PERIODSIZE * 3 * 2 * requested_channels
self._max_buffer_bytes = ALSA_PERIODSIZE * 60 * 2 * requested_channels
self._pcm = alsaaudio.PCM(
type=alsaaudio.PCM_CAPTURE,
mode=alsaaudio.PCM_NORMAL,
device=self._device,
periods=ALSA_PERIODS,
)
self._pcm.setchannels(requested_channels)
self._pcm.setformat(alsaaudio.PCM_FORMAT_S16_LE)
actual_rate = self._pcm.setrate(requested_rate)
self._pcm.setperiodsize(ALSA_PERIODSIZE)
try:
self._pcm.setperiods(ALSA_PERIODS)
except AttributeError:
pass # Some pyalsaaudio versions don't have setperiods()
ring_buf_samples = self._max_buffer_bytes // (2 * requested_channels)
ring_buf_ms = (ring_buf_samples / actual_rate) * 1000
@@ -229,39 +228,101 @@ class PyAlsaAudioInput(audio_io.ThreadedAudioInput):
with self._ring_lock:
self._ring_buffer.append(data)
total_bytes = sum(len(chunk) for chunk in self._ring_buffer)
while total_bytes > self._max_buffer_bytes:
self._ring_buffer.popleft()
total_bytes = sum(len(chunk) for chunk in self._ring_buffer)
# total_bytes = sum(len(chunk) for chunk in self._ring_buffer)
# # logging.info("Ringbuffer: bytes=%d", total_bytes)
# while total_bytes > self._max_buffer_bytes:
# self._ring_buffer.popleft()
# logging.error("Ringbuffer: OVERFLOW")
# total_bytes = sum(len(chunk) for chunk in self._ring_buffer)
except:
if self._running:
break
# def _read(self, frame_size: int) -> bytes:
# bytes_needed = frame_size * 2
# result = b''
# buffer_not_empty = True
# while (len(result) < bytes_needed) and buffer_not_empty:
# with self._ring_lock:
# buffer_size = sum(len(chunk) for chunk in self._ring_buffer)
# self._buffer_log_max_last_sec = max(self._buffer_log_max_last_sec, buffer_size)
# now = time.monotonic()
# if now - self._buffer_log_last_ts >= 1.0:
# logging.info(
# "Buffer size (bytes): current=%d max_last_sec=%d",
# buffer_size,
# self._buffer_log_max_last_sec,
# )
# self._buffer_log_last_ts = now
# self._buffer_log_max_last_sec = 0
# if self._ring_buffer and buffer_size > bytes_needed :
# chunk = self._ring_buffer.popleft()
# needed = bytes_needed - len(result)
# if len(chunk) <= needed:
# result += chunk
# else:
# result += chunk[:needed]
# self._ring_buffer.appendleft(chunk[needed:])
# else:
# # Ring buffer empty - release lock and wait a bit
# pass
# if len(result) < bytes_needed:
# # Don't busy-wait - sleep briefly to let capture thread fill buffer
# time.sleep(0.001) # 0.1ms
# return result
def _read(self, frame_size: int) -> bytes:
bytes_needed = frame_size * 2
result = b''
while len(result) < bytes_needed:
with self._ring_lock:
if self._ring_buffer:
chunk = self._ring_buffer.popleft()
needed = bytes_needed - len(result)
if len(chunk) <= needed:
result += chunk
else:
result += chunk[:needed]
self._ring_buffer.appendleft(chunk[needed:])
if self._ring_buffer:
buffer_size = sum(len(chunk) for chunk in self._ring_buffer)
else:
buffer_size = 0
buffer_not_empty = (buffer_size != 0)
with self._ring_lock:
while (len(result) < bytes_needed) and buffer_not_empty:
chunk = self._ring_buffer.popleft()
needed = bytes_needed - len(result)
if len(chunk) <= needed:
result += chunk
else:
# Ring buffer empty - release lock and wait a bit
pass
if len(result) < bytes_needed:
# Don't busy-wait - sleep briefly to let capture thread fill buffer
import time
time.sleep(0.0001) # 0.1ms
result += chunk[:needed]
self._ring_buffer.appendleft(chunk[needed:])
if self._ring_buffer:
buffer_size = sum(len(chunk) for chunk in self._ring_buffer)
self._buffer_log_max_last_sec = max(self._buffer_log_max_last_sec, buffer_size)
now = time.monotonic()
if now - self._buffer_log_last_ts >= 1.0:
logging.info(
"Buffer size (bytes): current=%d max_last_sec=%d",
buffer_size,
self._buffer_log_max_last_sec,
)
self._buffer_log_last_ts = now
self._buffer_log_max_last_sec = 0
else:
buffer_size = 0
buffer_not_empty = (buffer_size != 0)
#append to bytesneeded
if len(result) < bytes_needed:
result += b'\x00' * (bytes_needed - len(result))
return result
# def _read(self, frame_size: int) -> bytes:
# bytes_needed = frame_size * 2
# result = b''
# # Generate 500Hz sine wave
# samples = []
# for i in range(frame_size):
# sample = int(np.sin(2 * np.pi * 500 * i / 48000) * 32767)
# samples.append(sample)
# return struct.pack('h' * len(samples), *samples)
def _close(self) -> None:
self._running = False
if self._callback_thread:
@@ -580,7 +641,7 @@ async def init_broadcast(
def on_flow():
data_packet_queue = iso_queue.data_packet_queue
print(
logging.info(
f'\rPACKETS: pending={data_packet_queue.pending}, '
f'queued={data_packet_queue.queued}, '
f'completed={data_packet_queue.completed}',

4
src/auracast/multicast_control.py
View File

@@ -143,6 +143,10 @@ async def main():
level=os.environ.get('LOG_LEVEL', logging.DEBUG),
format='%(module)s.py:%(lineno)d %(levelname)s: %(message)s'
)
# Enable debug logging for bumble
# logging.getLogger('bumble').setLevel(logging.DEBUG)
os.chdir(os.path.dirname(__file__))
global_conf = auracast_config.AuracastGlobalConfig(

4
src/auracast/server/multicast_server.py
View File

@@ -26,6 +26,10 @@ from auracast.utils.sounddevice_utils import (
)
load_dotenv()
# Configure bumble debug logging
# log.getLogger('bumble').setLevel(log.DEBUG)
# make sure pipewire sets latency
# Primary and secondary persisted settings files
STREAM_SETTINGS_FILE1 = os.path.join(os.path.dirname(__file__), 'stream_settings.json')