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# Copyright (c) Kyutai, all rights reserved.
# This source code is licensed under the license found in the
# LICENSE file in the root directory of this source tree.
"""Client for the Moshi server."""
import argparse
import asyncio
import queue
import sys
import aiohttp
import numpy as np
import sphn
import sounddevice as sd
from .client_utils import AnyPrinter, Printer, RawPrinter
class Connection:
def __init__(
self,
printer: AnyPrinter,
websocket: aiohttp.ClientWebSocketResponse,
sample_rate: float = 24000,
channels: int = 1,
frame_size: int = 1920,
) -> None:
self.printer = printer
self.websocket = websocket
self.sample_rate = sample_rate
self.frame_size = frame_size
self.channels = channels
self._done = False
self._in_stream = sd.InputStream(
samplerate=sample_rate,
channels=channels,
blocksize=self.frame_size,
callback=self._on_audio_input,
)
self._out_stream = sd.OutputStream(
samplerate=sample_rate,
channels=channels,
blocksize=frame_size,
callback=self._on_audio_output,
)
self._opus_writer = sphn.OpusStreamWriter(sample_rate)
self._opus_reader = sphn.OpusStreamReader(sample_rate)
self._output_queue = queue.Queue()
async def _queue_loop(self) -> None:
while True:
if self._done:
return
await asyncio.sleep(0.001)
msg = self._opus_writer.read_bytes()
if len(msg) > 0:
try:
await self.websocket.send_bytes(b"\x01" + msg)
except Exception as e:
print(e)
self._lost_connection()
return
async def _decoder_loop(self) -> None:
all_pcm_data = None
while True:
if self._done:
return
await asyncio.sleep(0.001)
pcm = self._opus_reader.read_pcm()
if all_pcm_data is None:
all_pcm_data = pcm
else:
all_pcm_data = np.concatenate((all_pcm_data, pcm))
while all_pcm_data.shape[-1] >= self.frame_size:
self._output_queue.put(all_pcm_data[: self.frame_size])
all_pcm_data = np.array(all_pcm_data[self.frame_size :])
async def _recv_loop(self) -> None:
try:
async for message in self.websocket:
if message.type == aiohttp.WSMsgType.CLOSED:
self.printer.log("info", "Connection closed")
break
elif message.type == aiohttp.WSMsgType.ERROR:
self.printer.log("error", f"{self.websocket.exception()}")
break
elif message.type != aiohttp.WSMsgType.BINARY:
self.printer.log("error", f"received from server: {message.type}")
continue
message = message.data
if not isinstance(message, bytes):
self.printer.log(
"warning", f"unsupported message type {type(message)}"
)
continue
if len(message) == 0:
self.printer.log("warning", "empty message")
continue
kind = message[0]
if kind == 1: # audio
payload = message[1:]
self._opus_reader.append_bytes(payload)
self.printer.print_pending()
elif kind == 2: # text
payload = message[1:]
self.printer.print_token(payload.decode())
else:
self.printer.log("warning", f"unknown message kind {kind}")
except Exception as e:
print(e)
self._lost_connection()
return
def _lost_connection(self) -> None:
if not self._done:
self.printer.log("error", "Lost connection with the server!")
self._done = True
def _on_audio_input(self, in_data, frames, time_, status) -> None:
assert in_data.shape == (self.frame_size, self.channels), in_data.shape
self._opus_writer.append_pcm(in_data[:, 0])
def _on_audio_output(self, out_data, frames, time_, status) -> None:
assert out_data.shape == (self.frame_size, self.channels), out_data.shape
try:
pcm_data = self._output_queue.get(block=False)
# TODO: handle other shapes by using some form of fifo/ring buffer.
assert pcm_data.shape == (self.frame_size,), pcm_data.shape
out_data[:, 0] = pcm_data
except queue.Empty:
out_data.fill(0)
self.printer.print_lag()
async def run(self) -> None:
with self._in_stream, self._out_stream:
await asyncio.gather(
self._recv_loop(), self._decoder_loop(), self._queue_loop()
)
async def run(printer: AnyPrinter, args):
if args.url is None:
proto = "ws"
if args.https:
proto += "s"
uri = f"{proto}://{args.host}:{args.port}/api/chat"
else:
proto = "wss"
if '://' in args.url:
proto, without_proto = args.url.split('://', 1)
if proto in ['ws', 'http']:
proto = "ws"
elif proto in ['wss', 'https']:
proto = "wss"
else:
printer.log("error", "The provided URL {args.url} seems to contain a protocol but it is unknown.")
sys.exit(1)
else:
without_proto = args.url
uri = f"{proto}://{without_proto}/api/chat"
printer.log("info", "Connecting to {uri}.")
async with aiohttp.ClientSession() as session:
async with session.ws_connect(uri) as ws:
printer.log("info", "connected!")
printer.print_header()
connection = Connection(printer, ws)
await connection.run()
def main():
parser = argparse.ArgumentParser("client_opus")
parser.add_argument("--host", default="localhost", type=str, help="Hostname to connect to.")
parser.add_argument("--port", default=8998, type=int, help="Port to connect to.")
parser.add_argument("--https", action='store_true',
help="Set this flag for using a https connection.")
parser.add_argument("--url", type=str, help='Provides directly a URL, e.g. to a gradio tunnel.')
args = parser.parse_args()
printer: AnyPrinter
if sys.stdout.isatty():
printer = Printer()
else:
printer = RawPrinter()
try:
asyncio.run(run(printer, args))
except KeyboardInterrupt:
printer.log("warning", "Interrupting, exiting connection.")
printer.log("info", "All done!")
if __name__ == "__main__":
main()
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