Adder element and pipeline rebuilding
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Adder element and pipeline rebuilding
 
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Hash: SHA1 Hi, i am trying to have this setup working: i have a pipeline with an adder element placed just after a decodebin element. what i want to do is adding a pad to the adder element while the pipeline is in GST_STATE_PLAYING. so i create a new bin for the new source, i add it to the pipeline, then i should link it to the adder. which is the right sequence to do this? i have problems and crash when i try to do the linking, the pipeline stalls and never restart. (it seems there is a lack of documentation about this family of problems) thanks in advance, marco -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (Darwin) iEYEARECAAYFAkld3kMACgkQ5A1A6ak/SoVibACeNYAy3iX8ifir2D2nUZmhjPm2 G9YAn1XTwzfyuvsWUlGkdAyvU0vUQsJ2 =0aGb -----END PGP SIGNATURE----- ------------------------------------------------------------------------------ _______________________________________________ gstreamer-devel mailing list [hidden email] https://lists.sourceforge.net/lists/listinfo/gstreamer-devel |
Re: Adder element and pipeline rebuilding
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HI ,
First set your pipeline to GST_STATE_PAUSED state then add the new element and then again set pipeline to GST_STATE_PLAYING state.
On Fri, Jan 2, 2009 at 2:58 PM, marco <[hidden email]> wrote: -----BEGIN PGP SIGNED MESSAGE----- -- Regards, Sudarshan Bisht ------------------------------------------------------------------------------ _______________________________________________ gstreamer-devel mailing list [hidden email] https://lists.sourceforge.net/lists/listinfo/gstreamer-devel |
Re: Adder element and pipeline rebuilding
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Hash: SHA1 Il giorno 02/gen/09, alle ore 10:33, sudarshan bisht ha scritto: > HI , > First set your pipeline to GST_STATE_PAUSED state then add > the new element and then again set pipeline to GST_STATE_PLAYING > state. thanks for your fast answer. it seems it does not work, it stalls or it gives errors in the flow. the following is the code i am executing: void add_sine(){ GstElement *tsine; tsine = get_silence_bin(); gst_element_set_state(pipeline, GST_STATE_PAUSED); gst_bin_add(GST_BIN(pipeline), tsine); gst_pad_link(gst_element_get_static_pad(tsine, "src"), gst_element_get_request_pad(adder, "sink1")); gst_element_set_state(pipeline, GST_STATE_PLAYING); } this brings to a flow error. if i add a : gst_element_set_state(tsine, GST_STATE_PAUSED); before adding it to the pipeline, it simply stalls (i never get an async-done from the pipeline, that should be the message posted to the bus when the pipeline is in playing state again. just for your information: this pipeline has a tee element outputting to two different sink elements (alsasink and shout2send); any hint on how to get this working? marco -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (Darwin) iEYEARECAAYFAkld4nEACgkQ5A1A6ak/SoXO2QCgolmRiZRm8GSEeRnQalLBOrFT lDgAnRL5iT7LTYkYFfAl7IBOGe2uji3G =mkNJ -----END PGP SIGNATURE----- ------------------------------------------------------------------------------ _______________________________________________ gstreamer-devel mailing list [hidden email] https://lists.sourceforge.net/lists/listinfo/gstreamer-devel |
Re: Adder element and pipeline rebuilding
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Hi ,,
Add the tsine element before , link it in later in GST_STATE_PAUSED state.
On Fri, Jan 2, 2009 at 3:16 PM, marco <[hidden email]> wrote:
-- Regards, Sudarshan Bisht ------------------------------------------------------------------------------ _______________________________________________ gstreamer-devel mailing list [hidden email] https://lists.sourceforge.net/lists/listinfo/gstreamer-devel |
Re: Adder element and pipeline rebuilding
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Hash: SHA1 Il giorno 02/gen/09, alle ore 10:52, sudarshan bisht ha scritto: > Hi ,, > Add the tsine element before , link it in later in > GST_STATE_PAUSED state. in this way i have no errors but the pipeline stalls and the alsa output sink does not play nothing. i suspect it could be the shout2send sink not restarting... i have no idea of what happens : ( marco -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (Darwin) iEYEARECAAYFAkld6GwACgkQ5A1A6ak/SoXcXQCgoicsOlVVyObHatS5xTvoQzlX IcgAn14ZCDynRAnENrTB38JmnmO6u+OW =wrQE -----END PGP SIGNATURE----- ------------------------------------------------------------------------------ _______________________________________________ gstreamer-devel mailing list [hidden email] https://lists.sourceforge.net/lists/listinfo/gstreamer-devel |
Re: Adder element and pipeline rebuilding
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In reply to this post by marco@teknusi.org
marco schrieb:
> Hi, > > i am trying to have this setup working: > i have a pipeline with an adder element placed just after a decodebin > element. > what i want to do is adding a pad to the adder element while the > pipeline is in GST_STATE_PLAYING. > so i create a new bin for the new source, i add it to the pipeline, > then i should link it to the adder. > which is the right sequence to do this? > i have problems and crash when i try to do the linking, the pipeline > stalls and never restart. > > (it seems there is a lack of documentation about this family of > problems) Have a look at gstreamer/docs/design/part-block.txt Stefan > > thanks in advance, > > marco ------------------------------------------------------------------------------ _______________________________________________ gstreamer-devel mailing list [hidden email] https://lists.sourceforge.net/lists/listinfo/gstreamer-devel ------------------------------------------------------------------------------ _______________________________________________ gstreamer-devel mailing list [hidden email] https://lists.sourceforge.net/lists/listinfo/gstreamer-devel |
Re: Adder element and pipeline rebuilding
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Hash: SHA1 Il giorno 02/gen/09, alle ore 12:02, Stefan Kost ha scritto: > Have a look at gstreamer/docs/design/part-block.txt had a look and implemented some code, i can get to block a pad only when an EOS is reached, that seems strange to me...or this is the normal behaviour? marco -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (Darwin) iEYEARECAAYFAkld/RsACgkQ5A1A6ak/SoVoXgCgiwnQnHH44nQcKbKRoa5nmRTb 3fEAnRbs6bgIYCrPZZAmRvgg/u/u6zG7 =46u4 -----END PGP SIGNATURE----- ------------------------------------------------------------------------------ _______________________________________________ gstreamer-devel mailing list [hidden email] https://lists.sourceforge.net/lists/listinfo/gstreamer-devel |
Re: Adder element and pipeline rebuilding
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Hash: SHA1 Il giorno 02/gen/09, alle ore 12:40, marco ha scritto: > had a look and implemented some code, i can get to block a pad only > when an EOS is reached, that seems strange to me...or this is the > normal behaviour? it seems that bloking an adder element sinkpad only succeeds when an EOS is reached by the source. i cannot understand if this is a bug or what. marco -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (Darwin) iEYEARECAAYFAkleCtgACgkQ5A1A6ak/SoXWlQCfZFRc4ZNdxRvIk+ixaIbVHYV+ crsAniuJsGxpDc5NsL3QmTzw2CePrDGL =gD2t -----END PGP SIGNATURE----- ------------------------------------------------------------------------------ _______________________________________________ gstreamer-devel mailing list [hidden email] https://lists.sourceforge.net/lists/listinfo/gstreamer-devel |
Re: Adder element and pipeline rebuilding
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In reply to this post by marco@teknusi.org
On Fri, 2009-01-02 at 10:28 +0100, marco wrote:
> -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > Hi, > > i am trying to have this setup working: > i have a pipeline with an adder element placed just after a decodebin > element. > what i want to do is adding a pad to the adder element while the > pipeline is in GST_STATE_PLAYING. > so i create a new bin for the new source, i add it to the pipeline, > then i should link it to the adder. > which is the right sequence to do this? The sequence is: 1) leave the bin to READY 2) request a new pad from adder 3) link the requested pad to the bin 4) set the bin to PLAYING > i have problems and crash when i try to do the linking, the pipeline > stalls and never restart. Did you do gobject.threads_init() first? Wim > > (it seems there is a lack of documentation about this family of > problems) > > thanks in advance, > > marco > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v1.4.9 (Darwin) > > iEYEARECAAYFAkld3kMACgkQ5A1A6ak/SoVibACeNYAy3iX8ifir2D2nUZmhjPm2 > G9YAn1XTwzfyuvsWUlGkdAyvU0vUQsJ2 > =0aGb > -----END PGP SIGNATURE----- > > ------------------------------------------------------------------------------ > _______________________________________________ > gstreamer-devel mailing list > [hidden email] > https://lists.sourceforge.net/lists/listinfo/gstreamer-devel ------------------------------------------------------------------------------ _______________________________________________ gstreamer-devel mailing list [hidden email] https://lists.sourceforge.net/lists/listinfo/gstreamer-devel |
Re: Adder element and pipeline rebuilding
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Hash: SHA1 Il giorno 02/gen/09, alle ore 16:09, Wim Taymans ha scritto: > The sequence is: > > 1) leave the bin to READY > 2) request a new pad from adder > 3) link the requested pad to the bin > 4) set the bin to PLAYING ok, tried this too and i did not succeed into having it to work. the code is: void add_sine(){ GstElement *tsine; int pstate; GstPad *newpad; GstPad *toblock; tsine = get_silence_bin(); gst_bin_add(GST_BIN(pipeline), tsine); //toblock = gst_ghost_pad_get_target( // gst_element_get_static_pad(adderbin, "sink0")); //gst_pad_set_blocked(toblock, TRUE); newpad = gst_ghost_pad_new("sink1", gst_element_get_request_pad(adder, "sink%d")); gst_element_add_pad(adderbin, newpad); gst_pad_link(gst_element_get_static_pad(tsine, "src"), gst_element_get_static_pad(adderbin, "sink1")); gst_element_set_state(tsine, GST_STATE_PLAYING); //gst_pad_set_blocked(toblock, FALSE); } >> i have problems and crash when i try to do the linking, the pipeline >> stalls and never restart. > > Did you do gobject.threads_init() first? yes, i have g_thread_init(NULL) call and gst_init() for first in the main (and i think that gst_init() does a conditional call to g_thread_init() when !g_thread_supported(), or am i wrong? anyway, thanks for your help, i am sorry to bother the list with so many mails. marco -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (Darwin) iEYEARECAAYFAkleWj8ACgkQ5A1A6ak/SoWoqACfVPL0A0kGakN93oI0eajQD6+K fu4AnRMCIXTVtjibqXey7N2SIYdmXt4t =eXZi -----END PGP SIGNATURE----- ------------------------------------------------------------------------------ _______________________________________________ gstreamer-devel mailing list [hidden email] https://lists.sourceforge.net/lists/listinfo/gstreamer-devel |
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