playing a wav file in a separate thread

[trellos]

Hey,

Based on the example given in the "Mobile Python" book (simply amazing book btw), i've managed to get my application to open and play a .wav file until it finishes, by using the sound callback function. What I'm trying to do now is initiate the act of playing the sound inside a NEW thread, so my main thread can continue its execution without being held by the Ao_lock(). This is what I've done so far, I try opening the audio file and then pass the open handler to a new thread, and I've included the sound_callback function as a nested function inside my threaded one, so that it has access to the sound_lock object (no race condition, i hope!). But, it doesn't seem to get past the "here in the beginning" point... does anyone have an idea what might be going wrong?

Thnx in advance!!

def sound_thread(sound):

	sound_lock = e32.Ao_lock()

	def sound_callback(prev_state, current_state, err):
		print "here in the middle"
		if current_state == audio.EOpen:
			sound_lock.signal()
	
	print "here at the beginning"
	sound.play(callback = sound_callback)
	sound_lock.wait()
	sound.close()
	print "here at the end"

def playsound(file_name):

	sound_file = SOUNDS_PATH + file_name + ".wav"
	sound = audio.Sound.open(sound_file)
	
	thread.start_new_thread(sound_thread, (sound, ))

[marcelobarrosalmeida]

Hi trellos

My tests trying to play a sound from threads failed. I could not find in docs anything saying that this is forbidden but I did not listen any sound, just some glitches.

from threading import Thread
import audio
import time

def tocar(musica):
    m = audio.Sound.open(musica)
    m.play()

t1 = Thread(target=tocar,args=(u'e:\\Music\\Cake\\Prolonging The Magic\\03 Never There.mp3',))
t2 = Thread(target=tocar,args=(u'e:\\Music\\Cake\\Prolonging The Magic\\04 Guitar.mp3',))

t1.start()

print "1"

time.sleep(15)

print "2"

t2.start()

[trellos]

Hey thanks for the reply, that's my problem as well, no sound gets played! I initially thought that the sound file could not be opened in a thread (i got a kerror -4 not enough memory, if I remember correctly), that's why I opened the file inside the main thread and then passed the file handler into the (new) thread. I'm guessing the problem lies with the Ao_lock executing from within the new thread itself, it doesn't seem to work as it's supposed to..

Hi trellos

My tests trying to play a sound from threads failed. I could not find in docs anything saying that this is forbidden but I did not listen any sound, just some glitches.

from threading import Thread
import audio
import time

def tocar(musica):
    m = audio.Sound.open(musica)
    m.play()

t1 = Thread(target=tocar,args=(u'e:\\Music\\Cake\\Prolonging The Magic\\03 Never There.mp3',))
t2 = Thread(target=tocar,args=(u'e:\\Music\\Cake\\Prolonging The Magic\\04 Guitar.mp3',))

t1.start()

print "1"

time.sleep(15)

print "2"

t2.start()

[trellos]

So there's no way to get the sound file to start playing inside a new thread?? is it a limitation of the phone?