Re: [pygame] Noob question: playing sounds

[Miriam English]

Hi Philip,

I appreciate the update.

Yes, I was surprised to find that WAV files are a series of chunks of 
data with headers when I first looked into it a while back.


At the time I was mucking about generating raw waveforms mathematically 
using simple programs to basically just build a file out of bytes (like 
a simple text file) and couldn't work out why audio programs didn't read 
them properly. :) I found you can use many (free) audio programs, like 
"sox" or "audacity" to convert raw waveforms into properly constructed 
WAV files.


I'm surprised pygame won't play one of the Windows standard sounds. 
Perhaps the file is a slightly non-standard sound format and was added 
to the media folder by another program.


I just now tried a few experiments using sox to convert some sounds and 
it seems pygame doesn't like WAV files that are encoded as:

  signed integer
  floating point
  mu-law
  a-law
  gsm
but will play them if they're encoded as
  unsigned integer
  ima-adpcm
  ms-adpcm
That's a bit of a surprise to me. Maybe that's what happened in your case.

You can convert almost any sound file (sox will automatically recognise 
most formats) by doing something like this:

  sox sample.wav -a fixedSample.wav

That converts sample.wav file into an ms-adpcm file named fixedSample.wav

If you download and install sox it will give you lots of useful 
diagnostics about sounds. It is a commandline program, but that makes it 
more useful than a GUI program because of how you can hitch it to other 
programs. Sox will play pretty-much any kind of sound and convert almost 
anything to almost anything else. If it doesn't recognise the sound 
format you can tell it what you want it to interpret it as.


You can run it from inside python too.

Sox can also be used as a kind of synthesiser. For instance try this for 
a surprisingly realistic synthesised guitar sound:


play -n synth pl G2 pl B2 pl D3 pl G3 pl D4 pl G4 delay 0 .05 .1 .15 .2 
.25 remix - fade 0 4 .1 norm -1


Play is a command that comes with sox... at least it does for Linux. The 
version of sox for MSWindows probably does too. Sox is available for 
almost every operating system in existence.


Have fun,

- Miriam


On 10/06/15 01:47, Philip Le Riche wrote:

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/l

Re: [pygame] Noob question: playing sounds

[Philip Le Riche]

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 
>>> > 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
>
>>> mailto:phi...@blueskylark.org>> 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_con

Re: [pygame] Noob question: playing sounds

[Miriam English]

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 


> 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



mailto:phi...@blueskylark.org>> 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/









**



This e-mail is confidential. It may also be legally privileged.

If you


are not the intended recipient or have received it in error, please



delete it and all copies from your system and notify the sender



immediately by return e-mail. Any unauthorized reading,

reproducing,


printing or further dissemination of this e-mail or its contents is



strictly prohibited and may be unlawful. Internet communications



cannot be guaranteed to be timely, secure, error or virus-free. The



sender does not accept liability for any errors or omissions.





**



















--
If you don't have any failures then you're not trying hard enough.
 - Dr. Charles Elachi, director of NASA's Jet Propulsion Laboratory
-
Website: http://miriam-english.org
Blogs:   http://miriam-e.dreamwidth.org
 http://miriam-e.livejournal.com

Re: [pygame] Noob question: playing sounds

[Philip Le Riche]

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 >>
>>> > > > 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
>>>
>>> > > mailto:phi...@blueskylark.org>> 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/
>>>
>>> > >
>>>
>>> > >
>>> **
>>>
>>>
>>> > > This e-mail is confidential. It may also be legally privileged.
>>> If you
>>>
>>> > > are not the intended recipient or have received it in error, please
>>>
>>> > > delete it and all copies from your system and notify the sender
>>>
>>> > > immediately by return e-mail. Any unauthorized reading,
>>> reproducing,
>>>
>>> > > printing or further dissemination of this e-mail or its contents is
>>>
>>> > > strictly prohibited and may be unlawful. Internet communications
>>>
>>> > > cannot be guaranteed to be timely, secure, error or virus-free. The
>>>
>>> > > sender does not accept liability for any errors or omissions.
>>>
>>> > >
>>> **
>>>
>>>
>>> > >
>>>
>>> >
>>>
>>
>

Re: [pygame] Noob question: playing sounds

[Miriam English]

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  > > 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

> > mailto:phi...@blueskylark.org>> 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/

> >

> >
**

> > This e-mail is confidential. It may also be legally privileged. If you

> > are not the intended recipient or have received it in error, please

> > delete it and all copies from your system and notify the sender

> > immediately by return e-mail. Any unauthorized reading, reproducing,

> > printing or further dissemination of this e-mail or its contents is

> > strictly prohibited and may be unlawful. Internet communications

> > cannot be guaranteed to be timely, secure, error or virus-free. The

> > sender does not accept liability for any errors or omissions.

> >
**

> >

>





--
If you don't have any failures then you're not trying hard enough.
 - Dr. Charles Elachi, director of NASA's Jet Propulsion Laboratory
-
Website: http://miriam-english.org
Blogs:   http://miriam-e.dreamwidth.org
 http://miriam-e.livejournal.com

Re: [pygame] Noob question: playing sounds

[Philip Le Riche]

I did try forcing output to the 3.5mm socket using raspi-config even
though sound works with omxplayer, but with no effect. But thanks for
posting anyway - your second link contains a link to a sound
troubleshooting page which I'll follow up later.

Regards - Philip

On 05/06/2015 10:00, Miriam English wrote:
> I found this, which might help:
> https://www.raspberrypi.org/documentation/configuration/audio-config.md
>
> and this gives a little more:
> https://www.raspberrypi.org/forums/viewtopic.php?t=11086&p=122466
>
>

Re: [pygame] Noob question: playing sounds

[Miriam English]

I found this, which might help:
https://www.raspberrypi.org/documentation/configuration/audio-config.md

and this gives a little more:
https://www.raspberrypi.org/forums/viewtopic.php?t=11086&p=122466


--
If you don't have any failures then you're not trying hard enough.
 - Dr. Charles Elachi, director of NASA's Jet Propulsion Laboratory
-
Website: http://miriam-english.org
Blogs:   http://miriam-e.dreamwidth.org
 http://miriam-e.livejournal.com

Re: [pygame] Noob question: playing sounds

[Philip Le Riche]

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 
> > > > 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
>
> > > mailto:phi...@blueskylark.org>> 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/
>
> > >
>
> > >
> **
>
> > > This e-mail is confidential. It may also be legally privileged. If you
>
> > > are not the intended recipient or have received it in error, please
>
> > > delete it and all copies from your system and notify the sender
>
> > > immediately by return e-mail. Any unauthorized reading, reproducing,
>
> > > printing or further dissemination of this e-mail or its contents is
>
> > > strictly prohibited and may be unlawful. Internet communications
>
> > > cannot be guaranteed to be timely, secure, error or virus-free. The
>
> > > sender does not accept liability for any errors or omissions.
>
> > >
> **
>
> > >
>
> >
>

Re: [pygame] Noob question: playing sounds

[Michael Lutinsky]

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 



> 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  > > 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
> > mailto:phi...@blueskylark.org>> 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/
> >
> > **
> > This e-mail is confidential. It may also be legally privileged. If you
> > are not the intended recipient or have received it in error, please
> > delete it and all copies from your system and notify the sender
> > immediately by return e-mail. Any unauthorized reading, reproducing,
> > printing or further dissemination of this e-mail or its contents is
> > strictly prohibited and may be unlawful. Internet communications
> > cannot be guaranteed to be timely, secure, error or virus-free. The
> > sender does not accept liability for any errors or omissions.
> > **
> >
> 

Re: [pygame] Noob question: playing sounds

[Carlos Zuniga]

On Thu, Jun 4, 2015 at 12:03 PM, Philip Le Riche  wrote:
> Thank you for that, but still no joy whatsoever. I also tried uninstalling
> python-pygame and installing python3-pygame instead, but that gave the same
> error and furthermore, wouldn't recognise the existence of my wav file. I
> also tried installing pulseaudio, python-alsaaudio and python-pyalsa,
> thinking that it looked like pygame was failing to connect to the underlying
> sound system, but nothing made any difference.
>
> Are people successfully using pygame on the Raspberry Pi, or is it just
> broken?
>

I think you'll have more luck asking in the RPi forums.
Looking at the last post in this thread it seems to be a problem with
pulseaudio:
https://www.raspberrypi.org/forums/viewtopic.php?t=45548&p=360197

Are you able to run other sound applications?

Re: [pygame] Noob question: playing sounds

[Philip Le Riche]

Thank you for that, but still no joy whatsoever. I also tried
uninstalling python-pygame and installing python3-pygame instead, but
that gave the same error and furthermore, wouldn't recognise the
existence of my wav file. I also tried installing pulseaudio,
python-alsaaudio and python-pyalsa, thinking that it looked like pygame
was failing to connect to the underlying sound system, but nothing made
any difference.

Are people successfully using pygame on the Raspberry Pi, or is it just
broken?

Regards - Philip

On 04/06/2015 06:21, diliup gabadamudalige wrote:
> This has happened to me too on several occasions. I have resolved this by
>
> 1.pygame.mixer.pre_init(44100, 16, 2, 4096) # setup mixer to avoid
> sound lag
>
> 2.pygame.init()
>
> 3.pygame.mixer.set_num_channels(64)
>
> Try deleting the name of the file completley and renaming it.
> Sometimes there are hidden characters and this too causes problems.
>
> Hope this helps.
>
>
>
> On Thu, Jun 4, 2015 at 4:41 AM, Greg Ewing
> mailto:greg.ew...@canterbury.ac.nz>> wrote:
>
> Philip Le Riche 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,
>
>
> It still works for me, using pygame 1.9.2 with
> Python 2.7 on MacOSX 10.6.
>
> -- 
> Greg
>
>
>
>
> -- 
> Diliup Gabadamudalige
>
> http://www.diliupg.com
> http://soft.diliupg.com/
>
> **
> This e-mail is confidential. It may also be legally privileged. If you
> are not the intended recipient or have received it in error, please
> delete it and all copies from your system and notify the sender
> immediately by return e-mail. Any unauthorized reading, reproducing,
> printing or further dissemination of this e-mail or its contents is
> strictly prohibited and may be unlawful. Internet communications
> cannot be guaranteed to be timely, secure, error or virus-free. The
> sender does not accept liability for any errors or omissions.
> **
>

Re: [pygame] Noob question: playing sounds

[diliup gabadamudalige]

This has happened to me too on several occasions. I have resolved this by

1.pygame.mixer.pre_init(44100, 16, 2, 4096) # setup mixer to avoid sound lag

2.pygame.init()

3.pygame.mixer.set_num_channels(64)

Try deleting the name of the file completley and renaming it. Sometimes
there are hidden characters and this too causes problems.

Hope this helps.



On Thu, Jun 4, 2015 at 4:41 AM, Greg Ewing 
wrote:

> Philip Le Riche 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,
>>
>
> It still works for me, using pygame 1.9.2 with
> Python 2.7 on MacOSX 10.6.
>
> --
> Greg
>



-- 
Diliup Gabadamudalige

http://www.diliupg.com
http://soft.diliupg.com/

**
This e-mail is confidential. It may also be legally privileged. If you are
not the intended recipient or have received it in error, please delete it
and all copies from your system and notify the sender immediately by return
e-mail. Any unauthorized reading, reproducing, printing or further
dissemination of this e-mail or its contents is strictly prohibited and may
be unlawful. Internet communications cannot be guaranteed to be timely,
secure, error or virus-free. The sender does not accept liability for any
errors or omissions.
**

Re: [pygame] Noob question: playing sounds

[Greg Ewing]

Philip Le Riche 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,


It still works for me, using pygame 1.9.2 with
Python 2.7 on MacOSX 10.6.

--
Greg

Re: [pygame] Noob question: playing sounds

[Philip Le Riche]

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  > 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
> mailto:phi...@blueskylark.org>> 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
>
>
>
>
>
> -- 
> Diliup Gabadamudalige
>
> http://www.diliupg.com
> http://soft.diliupg.com/
>
> **
> This e-mail is confidential. It may also be legally privileged. If you
> are not the intended recipient or have received it in error, please
> delete it and all copies from your system and notify the sender
> immediately by return e-mail. Any unauthorized reading, reproducing,
> printing or further dissemination of this e-mail or its contents is
> strictly prohibited and may be unlawful. Internet communications
> cannot be guaranteed to be timely, secure, error or virus-free. The
> sender does not accept liability for any errors or omissions.
> **
>

Re: [pygame] Noob question: playing sounds

[diliup gabadamudalige]

to do most things with pygame you need to initialize a pygame window.

On Tue, Jun 2, 2015 at 3:50 AM, B W  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 
> 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
>>
>
>


-- 
Diliup Gabadamudalige

http://www.diliupg.com
http://soft.diliupg.com/

**
This e-mail is confidential. It may also be legally privileged. If you are
not the intended recipient or have received it in error, please delete it
and all copies from your system and notify the sender immediately by return
e-mail. Any unauthorized reading, reproducing, printing or further
dissemination of this e-mail or its contents is strictly prohibited and may
be unlawful. Internet communications cannot be guaranteed to be timely,
secure, error or virus-free. The sender does not accept liability for any
errors or omissions.
**

Re: [pygame] Noob question: playing sounds

[B W]

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 
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
>