diff --git a/va-recorder.py b/va-recorder.py index e0e210c..3fa29dc 100755 --- a/va-recorder.py +++ b/va-recorder.py @@ -1,189 +1,252 @@ #!/usr/bin/env python3 import pyaudio +import wave 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 + self.external_lock_file = options.external_lock_file + self.external_trigger_file = options.external_trigger_file + + self.started_by_file = False + self.started_by_level = False + print('Available devices: %s' % ", ".join(devices_text)) print('Using audio device %s' % devices[self.device]) 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 listen(self): + wait_print = False + i = 0 + lock_print = False + external_lock_print = False + while True: + i = i + 1 + input = self.stream.read(self.chunk, exception_on_overflow = False) + rms_val = self.rms(input) + now = datetime.now().strftime('%Y-%m-%d %H:%M:%S') + + if os.path.exists(lock_file): + if not lock_print: + print("%s - lock file %s present, listen paused" % (now, lock_file)) + + lock_print = True + continue + else: + if lock_print: + print("%s - lock file %s removed, listen resumed" % (now, lock_file)) + lock_print = False + + if self.external_lock_file: + if os.path.exists(self.external_lock_file): + if not external_lock_print: + print("%s - external lock file %s present, listen paused" % (now, self.external_lock_file)) + + external_lock_print = True + continue + else: + if external_lock_print: + print("%s - external lock file %s removed, listen resumed" % (now, self.external_lock_file)) + external_lock_print = False + + wait_print = False + + if self.external_trigger_file: + if os.path.exists(self.external_trigger_file): + self.started_by_file = True + print('%s Recording by file %s' % (now, self.external_trigger_file)) + elif rms_val > self.threshold: + print('%s Recording by level %s' % (now, rms_val)) + self.started_by_level = True + + if self.started_by_level or self.started_by_file: + self.record() + else: + print("Level %d" % rms_val, end='\r') + def record(self): rec = [] current = time.time() end = time.time() + self.TIMEOUT_LENGTH start_time = current recording = False i = 0 - while current <= end: + print('Now recording...') + + while (self.started_by_level and current <= end) or (self.started_by_file and os.path.exists(self.external_trigger_file)): 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.threshold)) - if rms_val >= self.threshold: - end = time.time() + self.TIMEOUT_LENGTH + + if self.external_trigger_file or (self.started_by_level and rms_val >= self.threshold): 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: + if self.started_by_file or 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) + self.started_by_file = False + self.started_by_level = False + + def play(self, file): + p = pyaudio.PyAudio() + + wf = wave.open(file, 'rb') + stream = p.open( + format = p.get_format_from_width(wf.getsampwidth()), + channels = wf.getnchannels(), + rate = wf.getframerate(), + output = True + ) + + data = wf.readframes(1024) + + while data != b'': + stream.write(data) + data = wf.readframes(1024) + stream.close() + p.terminate() + def write(self, recording): + now = datetime.now().strftime('%Y-%m-%d %H:%M:%S') if os.path.exists(lock_file): - print("Lock file %s, skip saving file" % lock_file) + print("%s - lock file %s present, skip file" % (now, lock_file)) + return + + if self.external_lock_file and os.path.exists(self.external_lock_file): + print("%s - external lock file %s present, skip file" % (now, self.external_lock_file)) return n_files = len(os.listdir(f_name_directory)) - tmp_filename = os.path.join(f_name_directory, 'tmp1.wav') + tmp_filename = os.path.join(f_name_directory, '%s.tmp' % self.target) 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)) + print('%s - saved audio file to %s' % (now, 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.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') + if self.target == 'test': + self.play(filename) 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. 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='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') + parser.add_option('-e', '--external_lock_file', type='string', dest='external_lock_file', help='Skip recording if file exists') + parser.add_option('-i', '--external_trigger_file', type='string', dest='external_trigger_file', help='Start recording if file exists, regardless of level') 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) - +