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On Thu, Dec 31, 2009 at 1:16 PM, <[hidden email]> wrote:
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1. Re: gstreamer-devel Digest, Vol 43, Issue 47 (sreerenj b)
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Message: 1
Date: Thu, 31 Dec 2009 13:15:51 +0530
From: sreerenj b <[hidden email]>
Subject: Re: [gst-devel] gstreamer-devel Digest, Vol 43, Issue 47
To: [hidden email]
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On Wed, Dec 30, 2009 at 11:36 PM, <
[hidden email]> wrote:
> Send gstreamer-devel mailing list submissions to
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>
> To subscribe or unsubscribe via the World Wide Web, visit
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> or, via email, send a message with subject or body 'help' to
> [hidden email]
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> When replying, please edit your Subject line so it is more specific
> than "Re: Contents of gstreamer-devel digest..."
>
>
> Today's Topics:
>
> 1. trouble with playbin2 and audio track (kitone)
> 2. Re: level element in playbin2 (Stefan Kost)
> 3. Re: gstreamer clock (Stefan Kost)
> 4. Re: gstreamer in a non-multimedia area? (Stefan Kost)
> 5. H.264 decoder sink problem ([hidden email])
> 6. Re: gstreamer in a non-multimedia area? (Leonardo Sandoval)
> 7. Re: Playbin2 and Audio-CDs (regomodo)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Wed, 30 Dec 2009 13:18:54 +0100
> From: kitone <[hidden email]>
> Subject: [gst-devel] trouble with playbin2 and audio track
> To: [hidden email]
> Message-ID: <[hidden email]>
> Content-Type: text/plain; charset=US-ASCII
>
> Hi everyone,
>
> I'm using playbin2 to play video and I've add the ability to change
> audio track in the player. This doesn't work very well. When I switch
> to an other track there's little problem like no sound, need to seek to
> have sound again or some little freeze.
>
> So there's a best way to change track ?
>
> Do I need to define the state of the pipeline to PAUSED, change the
> audio track and replay again ? Or can I do this on the fly ?
>
> code :
> void Player::set_current_audio(int track) {
> g_object_set (playbin, "current-audio", track, NULL);
> }
>
> Best regards,
> kitone
>
>
>
> ------------------------------
>
> Message: 2
> Date: Wed, 30 Dec 2009 16:30:15 +0200
> From: Stefan Kost <[hidden email]>
> Subject: Re: [gst-devel] level element in playbin2
> To: Discussion of the development of GStreamer
> <[hidden email]>
> Message-ID: <[hidden email]>
> Content-Type: text/plain; charset=ISO-8859-1
>
> hi,
>
> Am 28.12.2009 14:34, schrieb J. Rios:
> > Hello,
> > Im tryign to incorporate the level element into a playbin2. This is
> > the significant part of what I have tried
> >
> > GstElement * outputsink;
> > outputsink = gst_element_factory_make( "gconfaudiosink", "audio-sink"
> );
> > ...
> > GstElement * m_Playbin = gst_element_factory_make( "playbin2", "play"
> );
> > ...
> > GstElement * level = gst_element_factory_make( "level", "levelctrl"
> );
> >
> > GstElement * replay = gst_element_factory_make( "rgvolume",
> > "replaygain" );
> >
> >
> > gst_bin_add( GST_BIN( m_Playbin ), level );
> > gst_bin_add( GST_BIN( m_Playbin ), replay );
> > g_object_set( G_OBJECT( m_Playbin ), "audio-sink", outputsink, NULL
> );
> >
> > g_object_set( level, "message", true, NULL );
> >
> > g_object_set( G_OBJECT( m_Playbin ), "flags", 0x02|0x10, NULL );
> >
> > gst_bus_add_watch( gst_pipeline_get_bus( GST_PIPELINE( m_Playbin ) ),
> > ( GstBusFunc ) gst_bus_async_callback, this );
> >
> >
> this cannot work as such. The elements need to be linked in the right
> order.
> What you need to do, is to create an own bin, add level, replay and the
> audiosink there, link them and set your bin as the audiosink. You need to
> add a
> ghostpad to the bin and set it to the first (yet unlinked) sink pad of you
> elements.
>
> Stefan
>
>
> > The problem I have is that I dont get the Element messages. All the rest
> > works fine including the replay-gain volumen but I dont get the level
> > messages in the callback function.
> > What I want to do is detect when the sound level is below an user
> > defined level so I can skip to next track.
> >
> > I dunno if this is the correct place to put it but I have been tryign to
> > search for this with no success. Please if u know what is wrong or how
> > it should work let me know
> >
> > Thanks in advance
> > J.Rios
> >
> >
> >
> >
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>
>
>
> ------------------------------
>
> Message: 3
> Date: Wed, 30 Dec 2009 16:33:26 +0200
> From: Stefan Kost <[hidden email]>
> Subject: Re: [gst-devel] gstreamer clock
> To: Discussion of the development of GStreamer
> <[hidden email]>
> Cc: sreerenj b <[hidden email]>
> Message-ID: <[hidden email]>
> Content-Type: text/plain; charset=ISO-8859-1
>
> Am 30.12.2009 08:19, schrieb sreerenj b:
> >
> > HI,
> >
> > Is there any way to get some signal or tick from the pipeline depending
> > upon the data transferd?(For example, suppose if i change the streaming
> > server playback rate to twice the actual rate,then i should needs to get
> > some identification from pipeline in each second or in some periodic
> > manner.)
>
> You could use gst_clock_new_periodic_id() together with a
> gst_clock_id_wait() or
> gst_clock_id_wait_async()
>
> Stefan
>
> > --
> > Sreerenj B
> > [hidden email] <mailto:[hidden email]>
> > mob: +91 9739469496
> >
> >
>
Hi ,
I captured the GstClockID of the pipeline in streaming-server
id=gst_clock_new_periodic_id(media->media->pipeline->clock,start_time,interval);
And then setted up the asynchronous callback using the following.
gst_clock_id_wait_async(id,(GstClockCallback *)TickCallback,"Tick sending");
but evenif i "stopped" or "paused" the client side player , i am getting the callback " TickCallback" in the server side on specified intervals!!!!!!! I take the clock of the pipeline currently running, but why i am getting this call back even i stopped the pipeline?Is there any way to rectify this?
I setted up these settings in gst-rtsp-server/gst/rtsp-server/rtsp-client.c ...inside the handle_play() function.
sreerenj
> >
> >
> ------------------------------------------------------------------------------
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> >
> >
> >
> > _______________________________________________
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> > https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
>
>
>
>
> ------------------------------
>
> Message: 4
> Date: Wed, 30 Dec 2009 16:36:37 +0200
> From: Stefan Kost <[hidden email]>
> Subject: Re: [gst-devel] gstreamer in a non-multimedia area?
> To: Discussion of the development of GStreamer
> <[hidden email]>
> Cc: Leonardo Sandoval <[hidden email]>
> Message-ID: <[hidden email]>
> Content-Type: text/plain; charset=ISO-8859-1
>
> hi,
>
> Am 29.12.2009 18:18, schrieb Leonardo Sandoval:
> > Hi,
> >
> > In the past, I worked in a project which consists of joining together
> several numerical codes (codes which solve some particular physic problem,
> like stars gravity or star mass evolution) in a single one, but this turned
> to be a very difficult problem due to different language/technologies.
> >
> > Recently, I moved to the multimedia field using gstreamer and seems to
> be an excellent and natural 'glue' to put several things together under a
> single framework. Before I can dig deeper on this, I have a simple question:
> in the case of galaxy dynamics, we are not talking about frames but
> 'snapshots', where each snapshot contains the information of each star
> inside a galaxy (mass, position, velocity, gas composition, etc.), i.e. the
> state of the galaxy at some time.
> >
> > I know that gstreamer does not care about the kind of data flowing, I
> just want to know if gstreamer has been used in other fields rather than
> multimedia and if yes, which has been the experienced with this technology.
> >
>
> I am quite sure it can be done. WHat I wonder is how gstreamer might help
> you.
> For multimedia it gives you data flow synchronisation and format
> negotiation
> (and other things). I am not sure you would need those. What would be left
> is
> the plugin framework and some developments support.
>
> >
> > Happy new year!
> >
> Same to you.
>
> Stefan
> >
> >
> > Encuentra las mejores recetas en Yahoo! Cocina.
> > http://mx.mujer.yahoo.com/cocina/
> >
> >
> ------------------------------------------------------------------------------
> > This SF.Net email is sponsored by the Verizon Developer Community
> > Take advantage of Verizon's best-in-class app development support
> > A streamlined, 14 day to market process makes app distribution fast and
> easy
> > Join now and get one step closer to millions of Verizon customers
> > http://p.sf.net/sfu/verizon-dev2dev
> > _______________________________________________
> > gstreamer-devel mailing list
> > [hidden email]
> > https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
>
>
>
>
> ------------------------------
>
> Message: 5
> Date: Wed, 30 Dec 2009 20:15:13 +0530
> From: <[hidden email]>
> Subject: [gst-devel] H.264 decoder sink problem
> To: <[hidden email]>
> Message-ID:
> <[hidden email]>
> Content-Type: text/plain; charset="us-ascii"
>
> Hi ,
> I am developing H264 decoder plugin. In my current pipeline i
> took filesrc, myplugin and autovideosink elements.
> i was able to decode the .H264 input file but i am not able to view the
> video on sink side. The decoded data by writing into a file and able to
> run with yuv tool. but through sink i am not able to. Could anyone
> suggest what output buffer should i create and which capabilities need i
> to set?
>
> Please its urgent...
>
> Thanks & Regards
> Mohan Reddy
>
> -------------- next part --------------
> An HTML attachment was scrubbed...
>
> ------------------------------
>
> Message: 6
> Date: Wed, 30 Dec 2009 09:14:38 -0800 (PST)
> From: Leonardo Sandoval <[hidden email]>
> Subject: Re: [gst-devel] gstreamer in a non-multimedia area?
> To: Discussion of the development of GStreamer
> <[hidden email]>, Stefan Kost
> <[hidden email]>
> Message-ID: <[hidden email]>
> Content-Type: text/plain; charset=iso-8859-1
>
> I think may be gstreamer a good option at least for those two reasons you
> mentioned:
>
> * Syncronisation: for example, in a galaxy evolution, several physics
> (gravitation, star evolution, etc.) are occurring at the same time, so we
> need syncronisation to control these computations.
>
> * format negotiation: currently, different codes outputs different data
> formats so most of the time the output of one program has to be converted in
> order to be the input of another program. Using standard formats specified
> in the pads/caps, these can be avoided, I believe.
>
> However, there is one problem. In a multimedia, we have all the data to be
> reproduced (encoded,decoded,etc) but in this case, starting from an initial
> snapshot (initial conditions) an new snapshot is produced (the snapshot at
> time t_0 + delta), then the latter is used to create the snapshot t_0 +
> 2*delta, etc, and I believe in gstreamer it is not possible that the output
> of a right element is the input of a left element, like in this diagram:
>
> ________ ________ _______
> | | | | | |
> --|->---| |----- | |------| |--->---|
> | |________| |________| |_______| |
> | |
> |-----------------------------------------------------|
> Ing. Leonardo SandovalCel: (044) 81 10 62 33 59Casa: (0181) 17 33 04 73
>
>
> --- El mi? 30-dic-09, Stefan Kost <[hidden email]> escribi?:
>
> > De:: Stefan Kost <[hidden email]>
> > Asunto: Re: [gst-devel] gstreamer in a non-multimedia area?
> > A: "Discussion of the development of GStreamer" <
> [hidden email]>
> > Cc: "Leonardo Sandoval" <[hidden email]>
> > Fecha: mi?rcoles 30 de diciembre de 2009, 8:36
> > hi,
> >
> > Am 29.12.2009 18:18, schrieb Leonardo Sandoval:
> > > Hi,
> > >
> > > In the past, I worked in a project which consists of
> > joining together several numerical codes (codes which solve
> > some particular physic problem, like stars gravity or star
> > mass evolution) in a single one, but this turned to be a
> > very difficult problem due to different
> > language/technologies.
> > >
> > > Recently, I moved to the multimedia field using
> > gstreamer and seems? to be an excellent and natural
> > 'glue' to put several things together under a single
> > framework. Before I can dig deeper on this, I have a simple
> > question: in the case of galaxy dynamics, we are not talking
> > about frames but 'snapshots', where each snapshot contains
> > the information of each star inside a galaxy (mass,
> > position, velocity, gas composition, etc.), i.e. the
> > state? of the galaxy at some time.?
> > >
> > > I know that gstreamer does not care about the kind of
> > data flowing, I just want to know if gstreamer has been used
> > in other fields? rather than multimedia and if yes,
> > which has been the experienced with this technology.
> > >
> >
> > I am quite sure it can be done. WHat I wonder is how
> > gstreamer might help you.
> > For multimedia it gives you data flow synchronisation and
> > format negotiation
> > (and other things). I am not sure you would need those.
> > What would be left is
> > the plugin framework and some developments support.
> >
> > >
> > > Happy new year!
> > >
> > Same to you.
> >
> > Stefan
> > >
> > >
> > >? ? ???Encuentra las mejores
> > recetas en Yahoo! Cocina.? ? ? ? ?
> > ? ? ? ? ? ???
> > > http://mx.mujer.yahoo.com/cocina/
> > >
> > >
> >
> ------------------------------------------------------------------------------
> > > This SF.Net email is sponsored by the Verizon
> > Developer Community
> > > Take advantage of Verizon's best-in-class app
> > development support
> > > A streamlined, 14 day to market process makes app
> > distribution fast and easy
> > > Join now and get one step closer to millions of
> > Verizon customers
> > > http://p.sf.net/sfu/verizon-dev2dev
> > > _______________________________________________
> > > gstreamer-devel mailing list
> > > [hidden email]
> > > https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
> >
> >
>
>
> Encuentra las mejores recetas en Yahoo! Cocina.
> http://mx.mujer.yahoo.com/cocina/
>
>
>
> ------------------------------
>
> Message: 7
> Date: Wed, 30 Dec 2009 18:06:24 +0000
> From: regomodo <[hidden email]>
> Subject: Re: [gst-devel] Playbin2 and Audio-CDs
> To: Discussion of the development of GStreamer
> <[hidden email]>
> Message-ID: <[hidden email]>
> Content-Type: Text/Plain; charset="iso-8859-1"
>
> On Monday 28 December 2009 16:01:06 Tim-Philipp M?ller wrote:
> > On Mon, 2009-12-21 at 20:55 +0000, reg wrote:
> > > I'm trying to use playbin2 with audiocds. I can get a track to
> > > play,pause and seek fine but the moment I try and change the uri
> > > playbin2 just plays up a lot. These are the errors I get:
> > >
> > > (Gereqi.py:5019): GStreamer-WARNING **: Name queue is not unique in bin
> > > uridecodebin0, not adding
> > >
> > > (Gereqi.py:5019): GStreamer-CRITICAL **: gst_caps_get_structure:
> > > assertion `index < caps->structs->len' failed
> > >
> > > (Gereqi.py:5019): GStreamer-CRITICAL **: gst_structure_get_name:
> > > assertion `structure != NULL' failed
> > >
> > >
> > > However, I can use playbin2 again without restarting my app. I just
> > > can't use the audio-cd until I restart my app.
> > >
> > > Is it possible to use playbin2 with audio-cd's yet?
> >
> > This was a bug, it's fixed in git now and will be in the upcoming -base
> > 0.10.26 release.
> >
> > See https://bugzilla.gnome.org/show_bug.cgi?id=605219
> >
> > Cheers
> > -Tim
> >
> >
> >
> >
> ---------------------------------------------------------------------------
> > --- This SF.Net email is sponsored by the Verizon Developer Community
> > Take advantage of Verizon's best-in-class app development support
> > A streamlined, 14 day to market process makes app distribution fast and
> > easy Join now and get one step closer to millions of Verizon customers
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> > _______________________________________________
> > gstreamer-devel mailing list
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> > https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
> >
> I finally got around to trying out git. Uninstalled everything gst related
> on
> my system and built gstreamer,gst-plugins-base and gst-python (in that
> order)
> only adding --prefix=/usr/ to ./configure.
>
> However, I get an error when I try to play a cd track:
>
> 'Error: Your GStreamer installation is missing a plug-in.',
> 'gstplaysink.c(1483): gen_audio_chain ():
> /GstPlayBin2:player/GstPlaySink:playsink0'
>
> I see this is from gst-plugins-base but I cannot see an option to
> enable/disable this.
>
>
>
> ------------------------------
>
>
> ------------------------------------------------------------------------------
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> ------------------------------
>
> _______________________________________________
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>
>
> End of gstreamer-devel Digest, Vol 43, Issue 47
> ***********************************************
>
--
Sreerenj B
Software engineer,Carinov Networks Pvt Ltd
[hidden email]
mob: +91 9739469496
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-- Sreerenj B Software engineer,Carinov Networks Pvt Ltd [hidden email]mob: +91 9739469496
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