diff --git a/va-recorder.py b/va-recorder.py index 4a5b027..e0e210c 100755 --- a/va-recorder.py +++ b/va-recorder.py @@ -1,189 +1,189 @@ #!/usr/bin/env python3 import pyaudio from ctypes import * from optparse import OptionParser from pathlib import Path import math import struct import wave import time import os import sys from datetime import datetime # remove useless alsa logging # From alsa-lib Git 3fd4ab9be0db7c7430ebd258f2717a976381715d # $ grep -rn snd_lib_error_handler_t # include/error.h:59:typedef void (*snd_lib_error_handler_t)(const char *file, int line, const char *function, int err, const char *fmt, ...) /* __attribute__ ((format (printf, 5, 6))) */; # Define our error handler type ERROR_HANDLER_FUNC = CFUNCTYPE(None, c_char_p, c_int, c_char_p, c_int, c_char_p) def py_error_handler(filename, line, function, err, fmt): pass #print('messages are yummy') c_error_handler = ERROR_HANDLER_FUNC(py_error_handler) asound = cdll.LoadLibrary('libasound.so') # Set error handler asound.snd_lib_error_set_handler(c_error_handler) # import sounddevice as sd #devices = sd.query_devices() #print(devices) f_name_directory = '%s/.sipclient/spool/playback' % Path.home() lock_file = '%s/.sipclient/spool/playback/playback.lock' % Path.home() class Recorder: chunk = 1024 FORMAT = pyaudio.paInt16 CHANNELS = 1 @staticmethod def rms(frame): SHORT_NORMALIZE = (1.0/32768.0) count = len(frame) / 2 format = "%dh" % (count) shorts = struct.unpack(format, frame) sum_squares = 0.0 for sample in shorts: n = sample * SHORT_NORMALIZE sum_squares += n * n rms = math.pow(sum_squares / count, 0.5) return rms * 1000 def __init__(self, target, options): self.p = pyaudio.PyAudio() info = self.p.get_host_api_info_by_index(0) numdevices = info.get('deviceCount') devices = {} devices_text = [] for i in range(0, numdevices): if (self.p.get_device_info_by_host_api_device_index(0, i).get('maxInputChannels')) > 0: devices[i] = self.p.get_device_info_by_host_api_device_index(0, i).get('name') devices_text.append("%s) %s" % (i, devices[i])) self.target = target self.TIMEOUT_LENGTH = options.timeout self.RATE = options.rate self.device = options.device self.MIN_REC_TIME = options.min_rec_time print('Available devices: %s' % ", ".join(devices_text)) print('Using audio device %s' % devices[self.device]) - self.threshhold = 0 if target == 'test' else options.threshhold + self.threshold = 0 if target == 'test' else options.threshold self.stream = self.p.open(format=self.FORMAT, channels=self.CHANNELS, rate=self.RATE, input=True, output=True, input_device_index=self.device, frames_per_buffer=self.chunk) def record(self): rec = [] current = time.time() end = time.time() + self.TIMEOUT_LENGTH start_time = current recording = False i = 0 while current <= end: i = i + 1 data = self.stream.read(self.chunk) rms_val = self.rms(data) now = datetime.now().strftime('%Y-%m-%d %H:%M:%S') if i == 1: - print('%s Recording at level %d > %d...' % (now, rms_val, self.threshhold)) - if rms_val >= self.threshhold: + print('%s Recording at level %d > %d...' % (now, rms_val, self.threshold)) + if rms_val >= self.threshold: end = time.time() + self.TIMEOUT_LENGTH print('Recording at level %d...' % rms_val, end='\r') recording = True current = time.time() rec.append(data) rec_time = time.time() - start_time - self.TIMEOUT_LENGTH if rec_time > self.MIN_REC_TIME: now = datetime.now().strftime('%Y-%m-%d %H:%M:%S') print("%s - recorded %.1f seconds" % (now, rec_time)) self.write(b''.join(rec)) else: if rec_time > 1: print("Skip too short recording %.1f seconds" % rec_time) def write(self, recording): if os.path.exists(lock_file): print("Lock file %s, skip saving file" % lock_file) return n_files = len(os.listdir(f_name_directory)) tmp_filename = os.path.join(f_name_directory, 'tmp1.wav') wf = wave.open(tmp_filename, 'wb') wf.setnchannels(self.CHANNELS) wf.setsampwidth(self.p.get_sample_size(self.FORMAT)) wf.setframerate(self.RATE) wf.writeframes(recording) wf.close() filename = os.path.join(f_name_directory, '%s.wav' % self.target) os.rename(tmp_filename, filename) print('Saved audio file to {}'.format(filename)) def listen(self): wait_print = False i = 0 lock_print = False while True: i = i + 1 input = self.stream.read(self.chunk) rms_val = self.rms(input) - if rms_val > self.threshhold: + if rms_val > self.threshold: if os.path.exists(lock_file): if not lock_print: print("Lock file %s, skip saving file" % lock_file) lock_print = True continue else: lock_print = False wait_print = False if self.target != 'test': self.record() else: print("Level %d" % rms_val, end='\r') else: print("Level %d" % rms_val, end='\r') def end(self): # Reset to default error handler asound.snd_lib_error_set_handler(None) if __name__ == '__main__': - description = 'This script is a voice activate recorder that saves individual recording in the folder %s that is polled by sip-session to initiate an outgoing call and playback the file. The filename is in the format user@domain.wav' % f_name_directory + description = 'This script is a voice activate recorder that saves individual recording in the folder %s that is polled by sip-session to initiate an outgoing call and playback the file. The filename is in the format user@domain.wav. Use test argument to test audio level.' % f_name_directory usage = '%prog [options] [user@domain]' parser = OptionParser(usage=usage, description=description) parser.print_usage = parser.print_help - parser.add_option('-r', '--sample_rate', type='int', default='16000', dest='rate', help='Sample rate') - parser.add_option('-d', '--device', type='int', default=0, dest='device', help='Use selected device') - parser.add_option('-t', '--timeout', type='int', default=2, dest='timeout', help='Timeout silence to stop recording') - parser.add_option('-m', '--min_rec_time', type='int', default=2, dest='min_rec_time', help='Minimum time to save recording') - parser.add_option('-l', '--threshhold', type='int', default=30, dest='threshhold', help='Minimum signal level to start recording') + parser.add_option('-r', '--sample_rate', type='int', default='16000', dest='rate', help='Audio sample rate') + parser.add_option('-d', '--device', type='int', default=0, dest='device', help='Use selected input audio device') + parser.add_option('-t', '--timeout', type='int', default=2, dest='timeout', help='Silence timeout to stop recording') + parser.add_option('-m', '--min_rec_time', type='int', default=2, dest='min_rec_time', help='Minimum recording time to save recording') + parser.add_option('-l', '--threshold', type='int', default=30, dest='threshold', help='Minimum signal level to start recording') options, args = parser.parse_args() try: target = args[0] except IndexError: parser.print_help() sys.exit(1) try: a = Recorder(args[0], options) a.listen() except KeyboardInterrupt: a.end() sys.exit(0)