Swfdec - Dec 2007 - [Bug 13772] New: Sound freezes animation

http://bugs.freedesktop.org/show_bug.cgi?id=13772

           Summary: Sound freezes animation
           Product: swfdec
           Version: 0.5.5
          Platform: x86 (IA32)
        OS/Version: FreeBSD
            Status: NEW
          Severity: normal
          Priority: medium
         Component: plugin
        AssignedTo: swfdec at lists.freedesktop.org
        ReportedBy: iasenkk at hotmail.com
         QAContact: swfdec at lists.freedesktop.org


When playing any sound swfdec freezes then plays 1-2 sec of animation/movie
then freezes again when playing sound and then 1-2 sec animation/movie again
:). That is happening on both my computers. When i disable the sound everything
plays fine.


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--- Comment #1 from Riccardo Magliocchetti <riccardo at datahost.it> 
2008-02-02 06:09:35 PST ---
Can you provide more info like which audio backend are you using, if you are
using ffmpeg + mad or gstreamer, an url that gives you the issue?


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--- Comment #2 from Iasen Kostov <iasenkk at hotmail.com>  2008-02-07
04:12:13 PST ---
(In reply to comment #1)
> Can you provide more info like which audio backend are you using, if you
are
> using ffmpeg + mad or gstreamer, an url that gives you the issue?
> 
It is using GStreamer at the moment. But I think I tested it without it too
(I'm not sure what FreeBSD port uses without GStreamer) but it was the same.
And it always has been as far as I remember. I think the problem is in OSS
support not the decoder because it's not freezing only on video replays but
on
any kind of sound.


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Riccardo Magliocchetti <riccardo at datahost.it> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|Sound freezes animation     |Sound freezes animation with
                   |                            |oss backend




--- Comment #3 from Riccardo Magliocchetti <riccardo at datahost.it> 
2008-03-29 06:12:15 PST ---
I've seen the same with alsa oss emulation, changed a bit the title. 


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Iasen Kostov <iasenkk at hotmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Severity|normal                      |major
           Priority|medium                      |high




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Cygwin Ports maintainer <yselkowitz at users.sourceforge.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |yselkowitz at users.sourceforge
                   |                            |.net




--- Comment #4 from Cygwin Ports maintainer <yselkowitz at
users.sourceforge.net>  2008-05-28 06:26:37 PST ---
Ditto here with swfdec-0.5 and -0.6 on Cygwin with OSS audio.  Video freezes if
audio is playing, but if there is no audio, or if swfdec is built with
--with-audio=none, video works fine.


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--- Comment #5 from Cygwin Ports maintainer <yselkowitz at
users.sourceforge.net>  2008-05-29 05:56:36 PST ---
Re: comment 1, I tested 0.6.6 with each of the three decoders individually, and
the results are the same.


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--- Comment #6 from Riccardo Magliocchetti <riccardo at datahost.it> 
2008-07-03 01:29:57 PST ---
Created an attachment (id=17487)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=17487)
tentative to readd oss backend to 0.7.x

Are you willing to try this patch that readd the oss backend to 0.7.x? Diffed
against git but should apply to swfdec 0.7.2. You'll need swfdec-mozilla
0.7.2.


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--- Comment #7 from Riccardo Magliocchetti <riccardo at datahost.it> 
2008-07-03 02:59:17 PST ---
It works fine with youtube, not with games. No luck :(


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--- Comment #8 from Cygwin Ports maintainer <yselkowitz at
users.sourceforge.net>  2008-07-03 07:01:00 PST ---
Sorry, no luck with either 0.7 or with adding O_NONBLOCK to 0.6. :-(


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Riccardo Magliocchetti <riccardo at datahost.it> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #17487|0                           |1
        is obsolete|                            |




--- Comment #9 from Riccardo Magliocchetti <riccardo at datahost.it> 
2008-07-03 09:33:15 PST ---
Created an attachment (id=17499)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=17499)
better playback with oss backend

Ok this one is against swfdec 0.6.6 tarball, i've tested these changes with
0.7.2 with both youtube and tennis.swf from the wiki screenshot page. I'd
like
someone from *BSD to test it. YMMV.


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--- Comment #10 from Cygwin Ports maintainer <yselkowitz at
users.sourceforge.net>  2008-07-03 14:46:39 PST ---
Sorry, tried with 0.6 and 0.7, doesn't help.


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--- Comment #11 from Cygwin Ports maintainer <yselkowitz at
users.sourceforge.net>  2008-07-03 21:38:16 PST ---
It just occurred to me, that since swfdec anyway deps gstreamer, why not use it
for the audiosink as well?


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--- Comment #12 from Benjamin Otte <otte at gnome.org>  2008-07-03
23:30:28 PST ---
Swfdec has not used GStreamer because of 4 reasons:
1) Swfdec didn't depend on GStreamer when the audio backends were written.
That
point is moot by now, but the biggest reason for why this wasn't even an
option.
2) We open multiple sound streams and I wasn't sure if all audio outputs are
able to handle this. This should be possible by now, so this point is moot,
too.
3) I want to be able to couple sound streams. If a browser shows 3 Flash files
and each emits 3 different sound streams, you don't want 9 volume controls
or
1, but 3.
4) I want to be able to minimize dropouts, even when Swfdec (or X) clogs the
CPU. The method to do this is to render 2 seconds of audio in advance.
Unfortunately this causes prolems if you change the volume or pan inside the
Flash file, because you don't want to wait for this to take 2 seconds to
take
effect. The solution to this is to rewind the sound stream. I'm not sure how
to
achieve this with GStreamer.

So, the reason why GStreamer wasn't used before is 1) and 2) and the reason
why
GStreamer (nor ALSA nor OSS) but Pulseaudio is the future is reasons 3) and 4).


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Riccardo Magliocchetti <riccardo at datahost.it> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
          Component|plugin                      |library
         Resolution|                            |WONTFIX




--- Comment #13 from Riccardo Magliocchetti <riccardo at datahost.it> 
2008-09-08 04:41:44 PST ---
Guys, i am really sorry for you but 0.8 is out and oss is gone.


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