init

.venv/lib/python3.8/site-packages/pygame/examples/audiocapture.py

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+#!/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
+
+from pygame._sdl2 import (
+    get_audio_device_names,
+    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_names(True)
+print(names)
+
+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=True,
+    frequency=44100,
+    audioformat=AUDIO_F32,
+    numchannels=2,
+    chunksize=512,
+    allowed_changes=AUDIO_ALLOW_FORMAT_CHANGE,
+    callback=callback,
+)
+# start recording.
+audio.pause(0)
+
+print(audio)
+
+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)
+pg.quit()