projektAI/venv/Lib/site-packages/pygame/examples/audiocapture.py

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2021-06-06 22:13:05 +02:00
#!/usr/bin/env python
""" pygame.examples.audiocapture
A pygame 2 experiment.
* record sound from a microphone
* play back the recorded sound
"""
import pygame as pg
import time
if pg.get_sdl_version()[0] < 2:
raise SystemExit("This example requires pygame 2 and SDL2.")
from pygame._sdl2 import (
get_audio_device_name,
get_num_audio_devices,
AudioDevice,
AUDIO_F32,
AUDIO_ALLOW_FORMAT_CHANGE,
)
from pygame._sdl2.mixer import set_post_mix
pg.mixer.pre_init(44100, 32, 2, 512)
pg.init()
# init_subsystem(INIT_AUDIO)
names = [get_audio_device_name(x, 1) for x in range(get_num_audio_devices(1))]
print(names)
iscapture = 1
sounds = []
sound_chunks = []
def callback(audiodevice, audiomemoryview):
""" This is called in the sound thread.
Note, that the frequency and such you request may not be what you get.
"""
# print(type(audiomemoryview), len(audiomemoryview))
# print(audiodevice)
sound_chunks.append(bytes(audiomemoryview))
def postmix_callback(postmix, audiomemoryview):
""" This is called in the sound thread.
At the end of mixing we get this data.
"""
print(type(audiomemoryview), len(audiomemoryview))
print(postmix)
set_post_mix(postmix_callback)
audio = AudioDevice(
devicename=names[0],
iscapture=1,
frequency=44100,
audioformat=AUDIO_F32,
numchannels=2,
chunksize=512,
allowed_changes=AUDIO_ALLOW_FORMAT_CHANGE,
callback=callback,
)
# start recording.
audio.pause(0)
print("recording with :%s:" % names[0])
time.sleep(5)
print("Turning data into a pg.mixer.Sound")
sound = pg.mixer.Sound(buffer=b"".join(sound_chunks))
print("playing back recorded sound")
sound.play()
time.sleep(5)