Hi Miriam -
My problem seems to have been with the wav file I was using. I'd
always assumed a wav file consisted of little more than raw binary
samples, in what case there'd be very little to go wrong, but it
seems the structure is more complicated than that. In particular,
the file I was using was one of the standard Windows sounds taken
from c:\Windows\media, which are in stereo. I imagine Pygame must be
able to play stereo wav files, given the right settings, but not
with the defaults.
I eventually came across the GPIO Music Box at
https://www.raspberrypi.org/learning/gpio-music-box/worksheet/ which
contains a very simple demo program using the Sonic Pi sounds which
are pre-installed in /opt/sonic-pi/etc/samples/
Running my Pi headless and logging in with PuTTy I got an
xcb_comection error message, which I got rid of by typing
unset DISPLAY
at the shell prompt before launching the Pygame program.
Hope that helps. Regards - Philip
On 05/06/2015 12:20, Miriam English
wrote:
Ah.
Then by elimination it does seem that python/pygame on Raspberry
Pi is the source of the problem somehow. Good luck. Let us know
when you solve it. I have a Raspberry Pi too and though I haven't
got around to playing with python and pygame on it yet, I hope to
in the future. :)
Cheers,
- Miriam
On 05/06/15 20:19, Philip Le Riche wrote:
Thanks Miriam, but since I can play sounds
with omxplayer that wouldn't
seem to be the problem.
Kind regards - Philip
On 05/06/2015 09:52, Miriam English wrote:
It just occurred to me that I recall
reading somewhere that there are
2 sound outputs in the Raspberry Pi (the audio jack, and the
HDMI
connector) and that some people have had difficulty switching
between
them. You are probably trying to get sound from the audio
jack. Did
you check whether there was sound coming from the HDMI
connector? Or
if you're doing it the other way, did you check the audio
jack?
Just a thought. :)
Good luck to you,
- Miriam
On 05/06/15 18:10, Philip Le Riche wrote:
I got rid of the
xcb_connection_has_error() by unsetting shell
environment variable DISPLAY, which PuTTy was helpfully
setting for me
(for good reason in other circumstances).
The line os.environ["SDL_VIDEODRIVER"] = "dummy" still seems
to be
necessary.
However, I still get no sound. I'll try the RPi forums and
see what
anyone can suggest there.
Regards - Philip
On 04/06/2015 20:45, Michael Lutinsky wrote:
I can verify that running:
$ python
/usr/lib/python2.7/dist-packages/pygame/examples/sound.py
plays without error on my Kubuntu distro (x86_64 Linux
kernel
3.19.0-18, pulseaudio 6.0). Must be a RPi issue?
~ Michael
On Wed : Jun 3, 2015 10:38:41 AM you wrote:
Well, this is strange. In
/usr/lib/python2.7/dist-packages/pygame/examples
there is
sound.py. This
must have worked for someone once,
and it doesn't include anything
about
creating a window. When I run it
for the first time it makes a
click but
doesn't play the sound. It
produces the xcb_connection_has_error()
message but seems to ignore it.
Adding
pygame.display.set_mode((1,1)) to my program (which
otherwise now
is very similar to sound.py)
doesn't help. This is driving me nuts!
Regards - Philip
On 02/06/2015 13:58, diliup
gabadamudalige wrote:
to do most things with pygame
you need to initialize a pygame
window.
On Tue, Jun 2, 2015 at 3:50 AM,
B W <stabbingfinger@xxxxxxxxx
<mailto:stabbingfinger@xxxxxxxxx>>
wrote:
Hi, you cannot use the dummy
video driver if you want sound. At
least I have not figured out a
way to do it. You need at least a
1x1 window.
Gumm
On Mon, Jun 1, 2015 at 2:11 PM,
Philip Le Riche
<philip@xxxxxxxxxxxxxxx
<mailto:philip@xxxxxxxxxxxxxxx>> wrote:
Just trying to get started with
pygame and stuck at square 1.
All I want to do is play sounds
on a Raspberry Pi (Raspbian).
No screen. Nothing visual. So I
do:
import pygame, os, sys
from pygame.locals import *
os.environ["SDL_VIDEODRIVER"] =
"dummy"
pygame.mixer.init()
sound =
pygame.mixer.Sound("Exclamation.wav")
sound.play(loops = 0)
while
pygame.mixer.music.get_busy() == True:
continue
Having saved it in file try.py,
I do
python try.py
and get
xcb_connection_has_error()
returned true
Yes, I've done an apt-get update
and upgrade. I can make
sounds with Sonic Pi but this
produces nothing. Googling the
error seemed to give no relevant
results. Can someone give me
a hint please?
Regards - Philip
http://www.diliupg.com
http://soft.diliupg.com/
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