rename websocket server
This commit is contained in:
makaveli10
@@ -1,144 +1,81 @@
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import socket, pickle, struct, time, pyaudio
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# import asyncio
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import websockets
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import pickle, struct, time, pyaudio
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import threading
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import os
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import os, json
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import wave
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import textwrap
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import logging
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logging.basicConfig(level = logging.INFO)
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from collections import deque
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from dataclasses import dataclass
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import torch
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import numpy as np
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import paho.mqtt.client as mqtt
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from websockets.sync import server
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from websockets.sync.server import serve
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from transcriber import WhisperModel
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def on_connect(mqttc, obj, flags, rc):
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pass
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clients = {}
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def on_message(mqttc, obj, msg):
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pass
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def on_publish(mqttc, obj, mid):
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pass
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def on_subscribe(mqttc, obj, mid, granted_qos):
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pass
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def on_log(mqttc, obj, level, string):
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pass
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@dataclass(frozen=True)
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class Constants:
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AUDIO_OVER = b"audio_data_over"
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ACK = b"acknowledged"
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SENDING_FILE = b"sending_audio_file"
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FILE_SENT = b"audio_file_sent"
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def recv_audio(websocket):
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"""
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Receive audio chunks from client in an infinite loop.
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"""
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global clients
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client = ServeClient(websocket)
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clients[websocket] = client
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while True:
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try:
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frame_data = websocket.recv()
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if isinstance(frame_data, str):
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logging.info(frame_data)
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continue
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else:
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frame_np = np.frombuffer(frame_data, np.float32)
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clients[websocket].add_frames(frame_np)
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except Exception as e:
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clients[websocket].cleanup()
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clients.pop(websocket)
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logging.info("Connection Closed.")
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break
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class ServeClient:
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CHUNK = 1024
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FORMAT = pyaudio.paInt16
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CHANNELS = 1
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RATE = 16000
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def __init__(self, client_socket, device=None, verbose=True):
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def __init__(self, websocket, topic=None, device=None):
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self.payload_size = struct.calcsize("Q")
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self.data = b""
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self.frames = b""
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self.frames_np = None
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self.transcriber = WhisperModel("medium.en", device="cuda", compute_type="float16")
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self.transcriber = WhisperModel("small.en", compute_type="float16", local_files_only=False)
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self.timestamp_offset = 0.0
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self.frames_np = None
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self.frames_offset = 0.0
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self.text = []
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self.current_out = ''
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self.prev_out = ''
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self.t_start=None
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self.client_socket = client_socket
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self.verbose = verbose
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self.exit = False
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self.same_output_threshold = 0
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self.show_prev_out_thresh = 5 # if pause(no output from whisper) show previous output for 5 seconds
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self.add_pause_thresh = 3 # add a blank to segment list as a pause(no speech) for 3 seconds
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self.transcript = []
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self.send_last_n_segments = 10
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# text formatting
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self.wrapper = textwrap.TextWrapper(width=50)
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self.pick_previous_segments = 2
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# setup mqtt
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self.topic = None
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self.mqttc = mqtt.Client()
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self.mqttc.on_message = on_message
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self.mqttc.on_connect = on_connect
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self.mqttc.on_publish = on_publish
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self.mqttc.on_subscribe = on_subscribe
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self.mqttc = mqtt.Client()
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self.mqttc.connect("mqtt.kurg.org", 1883, 60)
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self.mqttc.loop_start()
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# send response to client; server is ready
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self.send_response_to_client(Constants.ACK)
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self.topic = topic
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# threading
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self.recv_thread = threading.Thread(target=self.recv_audio)
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self.websocket = websocket
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self.trans_thread = threading.Thread(target=self.speech_to_text)
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self.recv_thread.start()
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self.trans_thread.start()
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def recv_audio(self):
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"""
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Receive audio chunks from client in an infinite loop.
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"""
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if self.client_socket:
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try:
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while True:
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while len(self.data) < self.payload_size:
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packet = self.client_socket.recv(4*1024) # 4K
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if not packet: break
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self.data+=packet
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packed_msg_size = self.data[:self.payload_size]
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self.data = self.data[self.payload_size:]
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msg_size = struct.unpack("Q",packed_msg_size)[0]
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while len(self.data) < msg_size:
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self.data += self.client_socket.recv(4*1024)
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frame_data = self.data[:msg_size]
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self.data = self.data[msg_size:]
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frame_data = pickle.loads(frame_data)
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if self.topic is None:
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self.topic = frame_data["topic"]
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frame = frame_data["audio"]
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# client says audio over
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if Constants.AUDIO_OVER in frame:
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break
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frame_np = np.frombuffer(frame, dtype=np.int16)
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if self.frames_np is not None and self.frames_np.shape[0] > 60*self.RATE:
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self.frames_offset += 45.0
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self.frames_np = self.frames_np[int(45*self.RATE):]
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if self.frames_np is None:
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self.frames_np = frame_np.copy()
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else:
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self.frames_np = np.concatenate((self.frames_np, frame_np), axis=0)
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# set frames np to None so to stop translation for this client
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self.frames_np = None
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self.exit = True
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except Exception as e:
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if self.verbose: print(f"[ERROR]: {e}")
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self.exit = True
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def send_response_to_client(self, message):
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"""
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Send serialized response to client.
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"""
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a = pickle.dumps(message)
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message = struct.pack("Q",len(a))+a
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self.client_socket.sendall(message)
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def fill_output(self, output):
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"""
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@@ -159,81 +96,86 @@ class ServeClient:
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text = ''
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else:
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text += seg
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wrapped = self.wrapper.wrap(
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text="".join(text + output))[-2:]
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return " ".join(wrapped)
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wrapped = "".join(text + output)
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return wrapped
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def add_frames(self, frame_np):
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if self.frames_np is not None and self.frames_np.shape[0] > 45*self.RATE:
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self.frames_offset += 45.0
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self.frames_np = self.frames_np[int(30*self.RATE):]
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if self.frames_np is None:
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self.frames_np = frame_np.copy()
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else:
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self.frames_np = np.concatenate((self.frames_np, frame_np), axis=0)
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def speech_to_text(self):
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"""
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Process audio stream in an infinite loop.
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"""
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while True:
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if self.exit:
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self.mqttc.disconnect()
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self.client_socket.close()
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self.transcriber.destroy()
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if self.exit:
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logging.info("Exiting speech to text thread")
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break
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if self.frames_np is None:
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continue
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if self.frames_np is None: continue
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# clip audio if the current chunk exceeds 25 seconds, this basically implies that
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# no valid segment for the last 25 seconds from whisper
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# clip audio if the current chunk exceeds 30 seconds, this basically implies that
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# no valid segment for the last 30 seconds from whisper
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if self.frames_np[int((self.timestamp_offset - self.frames_offset)*self.RATE):].shape[0] > 25 * self.RATE:
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duration = self.frames_np.shape[0] / self.RATE
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self.timestamp_offset = self.frames_offset + duration - 5
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# add 200 ms from the last chunk if available
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if len(self.text) and self.frames_np[:-int((self.timestamp_offset - self.frames_offset)*self.RATE)].shape[0]:
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samples_take = max(0, (self.timestamp_offset - self.frames_offset)*self.RATE - 0.2*self.RATE)
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else:
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samples_take = max(0, (self.timestamp_offset - self.frames_offset)*self.RATE)
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samples_take = max(0, (self.timestamp_offset - self.frames_offset)*self.RATE)
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input_bytes = self.frames_np[int(samples_take):].copy()
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duration = input_bytes.shape[0] / self.RATE
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if duration<1.0: continue
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if duration<1.0:
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continue
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try:
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input_sample = input_bytes.astype(np.float32) / 32768.0
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input_sample = input_bytes.copy()
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# set previous complete segment as initial prompt
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if len(self.text) and self.text[-1] != '':
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initial_prompt = self.text[-1]
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else:
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initial_prompt = None
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# whisper transcribe with prompt
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result = self.transcriber.transcribe(input_sample, initial_prompt=initial_prompt)
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if len(result):
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self.t_start = None
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output, segments = self.update_segments(result, duration)
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out_dict = {
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'text': output,
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'segments': segments
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}
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if self.topic is not None:
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self.mqttc.publish(self.topic, payload=str(out_dict))
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self.send_response_to_client(out_dict)
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last_segment = self.update_segments(result, duration)
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if len(self.transcript) < self.send_last_n_segments:
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segments = self.transcript
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else:
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segments = self.transcript[-self.send_last_n_segments:]
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if last_segment is not None:
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segments = segments + [last_segment]
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try:
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self.websocket.send(json.dumps(segments))
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except Exception as e:
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logging.info(f"[ERROR]: {e}")
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else:
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# show previous output if there is pause i.e. no output from whisper
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output = ''
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segments = []
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if self.t_start is None: self.t_start = time.time()
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if time.time() - self.t_start < self.show_prev_out_thresh:
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output = self.fill_output('')
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if len(self.transcript) < self.send_last_n_segments:
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segments = self.transcript
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else:
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segments = self.transcript[-self.send_last_n_segments:]
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# add a blank if there is no speech for 3 seconds
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if len(self.text) and self.text[-1] != '':
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if time.time() - self.t_start > self.add_pause_thresh:
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self.text.append('')
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# publish outputs
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out_dict = {
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'text': output,
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'segments': []
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}
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if self.topic is not None:
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self.mqttc.publish(self.topic, payload=str(out_dict))
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self.send_response_to_client(out_dict)
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try:
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self.websocket.send(json.dumps(segments))
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except Exception as e:
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logging.info(f"[INFO]: {e}")
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except Exception as e:
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if self.verbose: print(f"[ERROR]: {e}")
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logging.info(f"[INFO]: {e}")
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time.sleep(0.01)
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def update_segments(self, segments, duration):
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@@ -249,15 +191,15 @@ class ServeClient:
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transcription for the current chunk
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"""
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offset = None
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transcript = []
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self.current_out = ''
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last_segment = None
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# process complete segments
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if len(segments) > 1:
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for i, s in enumerate(segments[:-1]):
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text_ = s.text
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self.text.append(text_)
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start, end = self.timestamp_offset + s.start, self.timestamp_offset + min(duration, s.end)
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transcript.append(
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self.transcript.append(
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{
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'start': start,
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'end': end,
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@@ -268,6 +210,11 @@ class ServeClient:
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offset = min(duration, s.end)
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self.current_out += segments[-1].text
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last_segment = {
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'start': self.timestamp_offset + segments[-1].start,
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'end': self.timestamp_offset + min(duration, segments[-1].end),
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'text': self.current_out
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}
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# if same incomplete segment is seen multiple times then update the offset
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# and append the segment to the list
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@@ -279,7 +226,7 @@ class ServeClient:
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if self.same_output_threshold > 5:
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if not len(self.text) or self.text[-1].strip().lower()!=self.current_out.strip().lower():
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self.text.append(self.current_out)
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transcript.append(
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self.transcript.append(
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{
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'start': self.timestamp_offset,
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'end': self.timestamp_offset + duration,
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@@ -289,6 +236,7 @@ class ServeClient:
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self.current_out = ''
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offset = duration
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self.same_output_threshold = 0
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last_segment = None
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else:
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self.prev_out = self.current_out
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@@ -296,36 +244,15 @@ class ServeClient:
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if offset is not None:
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self.timestamp_offset += offset
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# format and return output
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output = self.current_out
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return self.fill_output(output), transcript
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return last_segment
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def cleanup(self):
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logging.info("Cleaning up.")
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self.exit = True
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self.transcriber.destroy()
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if __name__=="__main__":
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# create socket
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server_socket = socket.socket(socket.AF_INET,socket.SOCK_STREAM)
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server_socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
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host='127.0.0.1'
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port=5901
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backlog=5
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socket_address = (host, port)
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print('STARTING SERVER AT',socket_address,'...')
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server_socket.bind(socket_address)
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server_socket.listen(backlog)
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client_sockets = []
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device = 0
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try:
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while True:
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client_socket, addr = server_socket.accept()
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print('GOT CONNECTION FROM:', addr)
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client = ServeClient(client_socket, device=f'cuda:{device}')
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client_sockets.append(client_socket)
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print("waiting for new connection")
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except Exception as e:
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print(f"[ERROR main]: {e}")
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for sock in client_sockets:
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try:
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sock.close()
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except:
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pass
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if __name__ == "__main__":
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with serve(recv_audio, "127.0.0.1", 9090) as server:
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server.serve_forever()
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@@ -1,258 +0,0 @@
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# import asyncio
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import websockets
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import pickle, struct, time, pyaudio
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import threading
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import os, json
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import wave
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import textwrap
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|
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import logging
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logging.basicConfig(level = logging.INFO)
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|
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from collections import deque
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from dataclasses import dataclass
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import torch
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import numpy as np
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from websockets.sync import server
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from websockets.sync.server import serve
|
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from transcriber import WhisperModel
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|
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clients = {}
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|
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def recv_audio(websocket):
|
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"""
|
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Receive audio chunks from client in an infinite loop.
|
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"""
|
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global clients
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client = ServeClient(websocket)
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clients[websocket] = client
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while True:
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try:
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frame_data = websocket.recv()
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if isinstance(frame_data, str):
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logging.info(frame_data)
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continue
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frame_np = np.frombuffer(frame_data, np.float32)
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clients[websocket].add_frames(frame_np)
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except websockets.ConnectionClosedOK:
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clients[websocket].cleanup()
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clients.pop(websocket)
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logging.info("Connection Closed.")
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break
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class ServeClient:
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RATE = 16000
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def __init__(self, websocket, topic=None, device=None):
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self.payload_size = struct.calcsize("Q")
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self.data = b""
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self.frames = b""
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self.transcriber = WhisperModel("small.en", compute_type="float16", local_files_only=False)
|
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self.timestamp_offset = 0.0
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self.frames_np = None
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self.frames_offset = 0.0
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self.text = []
|
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self.current_out = ''
|
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self.prev_out = ''
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self.t_start=None
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self.exit = False
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self.same_output_threshold = 0
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self.show_prev_out_thresh = 5 # if pause(no output from whisper) show previous output for 5 seconds
|
||||
self.add_pause_thresh = 3 # add a blank to segment list as a pause(no speech) for 3 seconds
|
||||
self.transcript = []
|
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self.send_last_n_segments = 10
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||||
|
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# text formatting
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||||
self.wrapper = textwrap.TextWrapper(width=50)
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self.pick_previous_segments = 2
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||||
# setup mqtt
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self.topic = topic
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# threading
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self.websocket = websocket
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self.trans_thread = threading.Thread(target=self.speech_to_text)
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self.trans_thread.start()
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def fill_output(self, output):
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"""
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Format output with current and previous complete segments
|
||||
into two lines of 50 characters.
|
||||
|
||||
Args:
|
||||
output(str): current incomplete segment
|
||||
|
||||
Returns:
|
||||
transcription wrapped in two lines
|
||||
"""
|
||||
text = ''
|
||||
pick_prev = min(len(self.text), self.pick_previous_segments)
|
||||
for seg in self.text[-pick_prev:]:
|
||||
# discard everything before a 3 second pause
|
||||
if seg == '':
|
||||
text = ''
|
||||
else:
|
||||
text += seg
|
||||
wrapped = "".join(text + output)
|
||||
return wrapped
|
||||
|
||||
def add_frames(self, frame_np):
|
||||
if self.frames_np is not None and self.frames_np.shape[0] > 45*self.RATE:
|
||||
self.frames_offset += 45.0
|
||||
self.frames_np = self.frames_np[int(30*self.RATE):]
|
||||
if self.frames_np is None:
|
||||
self.frames_np = frame_np.copy()
|
||||
else:
|
||||
self.frames_np = np.concatenate((self.frames_np, frame_np), axis=0)
|
||||
|
||||
def speech_to_text(self):
|
||||
"""
|
||||
Process audio stream in an infinite loop.
|
||||
"""
|
||||
while True:
|
||||
if self.exit:
|
||||
logging.info("Exiting speech to text thread")
|
||||
break
|
||||
|
||||
if self.frames_np is None:
|
||||
continue
|
||||
|
||||
# clip audio if the current chunk exceeds 30 seconds, this basically implies that
|
||||
# no valid segment for the last 30 seconds from whisper
|
||||
if self.frames_np[int((self.timestamp_offset - self.frames_offset)*self.RATE):].shape[0] > 25 * self.RATE:
|
||||
duration = self.frames_np.shape[0] / self.RATE
|
||||
self.timestamp_offset = self.frames_offset + duration - 5
|
||||
|
||||
samples_take = max(0, (self.timestamp_offset - self.frames_offset)*self.RATE)
|
||||
input_bytes = self.frames_np[int(samples_take):].copy()
|
||||
duration = input_bytes.shape[0] / self.RATE
|
||||
if duration<1.0:
|
||||
continue
|
||||
try:
|
||||
input_sample = input_bytes.copy()
|
||||
# set previous complete segment as initial prompt
|
||||
if len(self.text) and self.text[-1] != '':
|
||||
initial_prompt = self.text[-1]
|
||||
else:
|
||||
initial_prompt = None
|
||||
|
||||
# whisper transcribe with prompt
|
||||
result = self.transcriber.transcribe(input_sample, initial_prompt=initial_prompt)
|
||||
if len(result):
|
||||
self.t_start = None
|
||||
last_segment = self.update_segments(result, duration)
|
||||
if len(self.transcript) < self.send_last_n_segments:
|
||||
segments = self.transcript
|
||||
else:
|
||||
segments = self.transcript[-self.send_last_n_segments:]
|
||||
if last_segment is not None:
|
||||
segments = segments + [last_segment]
|
||||
|
||||
try:
|
||||
self.websocket.send(json.dumps(segments))
|
||||
except Exception as e:
|
||||
logging.info(f"[ERROR]: {e}")
|
||||
else:
|
||||
# show previous output if there is pause i.e. no output from whisper
|
||||
segments = []
|
||||
if self.t_start is None: self.t_start = time.time()
|
||||
if time.time() - self.t_start < self.show_prev_out_thresh:
|
||||
if len(self.transcript) < self.send_last_n_segments:
|
||||
segments = self.transcript
|
||||
else:
|
||||
segments = self.transcript[-self.send_last_n_segments:]
|
||||
|
||||
# add a blank if there is no speech for 3 seconds
|
||||
if len(self.text) and self.text[-1] != '':
|
||||
if time.time() - self.t_start > self.add_pause_thresh:
|
||||
self.text.append('')
|
||||
|
||||
try:
|
||||
self.websocket.send(json.dumps(segments))
|
||||
except Exception as e:
|
||||
logging.info(f"[INFO]: {e}")
|
||||
except Exception as e:
|
||||
logging.info(f"[INFO]: {e}")
|
||||
time.sleep(0.01)
|
||||
|
||||
def update_segments(self, segments, duration):
|
||||
"""
|
||||
Processes the segments from whisper. Appends all the segments to the list
|
||||
except for the last segment assuming that it is incomplete.
|
||||
|
||||
Args:
|
||||
segments(dict) : dictionary of segments as returned by whisper
|
||||
duration(float): duration of the current chunk
|
||||
|
||||
Returns:
|
||||
transcription for the current chunk
|
||||
"""
|
||||
offset = None
|
||||
self.current_out = ''
|
||||
last_segment = None
|
||||
# process complete segments
|
||||
if len(segments) > 1:
|
||||
for i, s in enumerate(segments[:-1]):
|
||||
text_ = s.text
|
||||
self.text.append(text_)
|
||||
start, end = self.timestamp_offset + s.start, self.timestamp_offset + min(duration, s.end)
|
||||
self.transcript.append(
|
||||
{
|
||||
'start': start,
|
||||
'end': end,
|
||||
'text': text_
|
||||
}
|
||||
)
|
||||
|
||||
offset = min(duration, s.end)
|
||||
|
||||
self.current_out += segments[-1].text
|
||||
last_segment = {
|
||||
'start': self.timestamp_offset + segments[-1].start,
|
||||
'end': self.timestamp_offset + min(duration, segments[-1].end),
|
||||
'text': self.current_out
|
||||
}
|
||||
|
||||
# if same incomplete segment is seen multiple times then update the offset
|
||||
# and append the segment to the list
|
||||
if self.current_out.strip() == self.prev_out.strip() and self.current_out != '':
|
||||
self.same_output_threshold += 1
|
||||
else:
|
||||
self.same_output_threshold = 0
|
||||
|
||||
if self.same_output_threshold > 5:
|
||||
if not len(self.text) or self.text[-1].strip().lower()!=self.current_out.strip().lower():
|
||||
self.text.append(self.current_out)
|
||||
self.transcript.append(
|
||||
{
|
||||
'start': self.timestamp_offset,
|
||||
'end': self.timestamp_offset + duration,
|
||||
'text': self.current_out
|
||||
}
|
||||
)
|
||||
self.current_out = ''
|
||||
offset = duration
|
||||
self.same_output_threshold = 0
|
||||
last_segment = None
|
||||
else:
|
||||
self.prev_out = self.current_out
|
||||
|
||||
# update offset
|
||||
if offset is not None:
|
||||
self.timestamp_offset += offset
|
||||
|
||||
return last_segment
|
||||
|
||||
def cleanup(self):
|
||||
logging.info("Cleaning up.")
|
||||
self.exit = True
|
||||
self.transcriber.destroy()
|
||||
|
||||
|
||||
|
||||
if __name__ == "__main__":
|
||||
with serve(recv_audio, "127.0.0.1", 9090) as server:
|
||||
server.serve_forever()
|
||||
Reference in New Issue
Block a user