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August 29, 2015 13:56
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pyaudioで取得した音量をOSCを使ってデータを送る。 2つのマイクをコールバック関数にIDを返すことで識別している。
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#!python3 | |
# -*- coding: utf-8 -*- | |
import math | |
import pyaudio | |
import time | |
import argparse | |
import struct | |
from pythonosc import osc_message_builder | |
from pythonosc import udp_client | |
FORMAT = pyaudio.paInt16 | |
SHORT_NORMALIZE = (1.0/32768.0) | |
WIDTH = 2 | |
CHANNELS = 2 | |
RATE = 44100 | |
def get_rms(block): | |
count = len(block)/2 | |
format = "%dh"%(count) | |
shorts = struct.unpack( format, block ) | |
# iterate over the block. | |
sum_squares = 0.0 | |
for sample in shorts: | |
# sample is a signed short in +/- 32768. | |
# normalize it to 1.0 | |
n = sample * SHORT_NORMALIZE | |
sum_squares += n*n | |
return math.sqrt( sum_squares / count ) | |
class Callback(object): | |
def __init__(self, id, client): | |
self.osc_id = id | |
self.osc_client = client | |
def callback(self, in_data, frame_count, time_info, status): | |
msg = osc_message_builder.OscMessageBuilder(address='/volume') | |
msg.add_arg(self.osc_id, arg_type = "i") | |
msg.add_arg(get_rms(in_data), arg_type = "f") | |
msg = msg.build() | |
self.osc_client.send(msg) | |
return (in_data, pyaudio.paContinue) | |
class MicSender(object): | |
def __init__(self): | |
pass | |
def start(self, id, cbfunc): | |
stream = p.open(format = FORMAT, | |
channels = CHANNELS, | |
rate = RATE, | |
input = True, | |
input_device_index = id, | |
output = True, | |
stream_callback = cbfunc.callback) | |
stream.start_stream() | |
while stream.is_active(): | |
time.sleep(0.1) | |
stream.stop_stream() | |
stream.close() | |
if __name__ == '__main__': | |
parser = argparse.ArgumentParser() | |
parser.add_argument('--ip', default='127.0.0.1', help='This ip of the OSC server') | |
parser.add_argument('--port', type=int, default=8002, help='The port the OSC server is listening on') | |
args = parser.parse_args() | |
client = udp_client.UDPClient(args.ip, args.port) | |
p = pyaudio.PyAudio() | |
ms = MicSender() | |
ms.start(1, Callback(1, client)) | |
ms.start(2, Callback(2, client)) | |
p.terminate() |
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