#!/usr/bin/env python3
import sys
import os
import time
import pyaudio
unbufferedStdout = os.fdopen(sys.stdout.fileno(),"wb",0) # Make unbuffered stdout

def parseSettings():
	rtn = {}
	for arg in sys.argv[1:]:
		arg = arg.split("=",1)
		if len(arg) < 2: arg.append("")
		arg[0] = arg[0].strip(" \t\r\n")
		arg[1] = arg[1].strip(" \t\r\n")
		rtn[arg[0]] = arg[1]
	return rtn

def getSetting(lst,tp,keys,default = None):
	for key in keys:
		if key in lst:
			return tp(lst[key])
	return default

def streamHandler(in_data, frame_count, time_info, status):
	unbufferedStdout.write(in_data)
	return (in_data, pyaudio.paContinue)

settings = parseSettings()
audioFormat = getSetting(settings,str,["f","format"],"paUInt8")
audioChannels = getSetting(settings,int,["c","channel","channels"],1)
audioRate = getSetting(settings,int,["r","rate","bitrate"],8000)
audioBuffer = getSetting(settings,float,["b","buffer","buffersize"],0.05)
audioDevice = getSetting(settings,int,["d","device"],None)

audioFormat = getattr(pyaudio,audioFormat)
audioBuffer = round(audioRate * audioBuffer)

kwargs = {
	"input": True,
	"input_device_index": audioDevice,
	"format": audioFormat,
	"channels": audioChannels,
	"frames_per_buffer": audioBuffer,
	"rate": audioRate,
	"stream_callback": streamHandler
}

audio = pyaudio.PyAudio()
stream = audio.open(**kwargs)

try:
	while stream.is_active():
		time.sleep(0.1)
except KeyboardInterrupt:
	pass