pmt-info callback not getting invoked
Yogesh Tyagi
yogesh.bit2006 at gmail.com
Fri Aug 30 09:18:38 PDT 2013
Hi Robert/Ian
I agree with you but I just wanted to know what is the trigger that causes
invocation of get_properties methods inside gstreamer plugins?
Thanks,
Yogesh
On Fri, Aug 30, 2013 at 7:11 PM, Robert Krakora <
rob.krakora at messagenetsystems.com> wrote:
> I agree with Ian. gst-launch is really only meant for testing...
>
>
> On Fri, Aug 30, 2013 at 9:40 AM, Ian Davidson <id012c3076 at blueyonder.co.uk
> > wrote:
>
>> It makes perfect sense to SET a property when using gst-launch to set
>> off a pre-determined set of actions. But I don't see the value of trying
>> to pass anything to gst-launch from within a plug-in - you need the
>> flexibility of a program (for example, a C program) which does have the
>> ability to interrogate properties and 'do things' dependant on the values
>> of those properties.
>>
>> Of course, you are free to prove me wrong.
>>
>> Ian
>>
>> On 30/08/2013 14:20, Yogesh Tyagi wrote:
>>
>> Hi,
>>
>> That was an example to show how do we invoke set_property through
>> gst-launch.I am concerned for get_property.
>>
>> Thanks,
>> Yogesh
>>
>>
>> On Fri, Aug 30, 2013 at 6:44 PM, Ian Davidson <
>> id012c3076 at blueyonder.co.uk> wrote:
>>
>>> On a quick inspection - it would seem that the plug-in has a property
>>> 'program', but you are trying to set 'program-number'.
>>>
>>> Ian
>>>
>>>
>>> On 30/08/2013 13:45, Yogesh Tyagi wrote:
>>>
>>> Hi,
>>>
>>> Yes, it is a custom plugin. Here is the output of "gst-inspect
>>> mdtsdemux"
>>>
>>> Factory Details:
>>> Long name: Transport Stream Demultiplexer
>>> Class: Demuxer
>>> Description:
>>> Author(s):
>>> Rank: none (0)
>>>
>>> Plugin Details:
>>> Name: mdplugin
>>> Description: GStreamer elements
>>> Filename: /usr/lib/libgstmdplugin.so
>>> Version: 0.10.22.1
>>> License: BSD
>>> Source module: gst-md
>>> Binary package: GStreamer MD Elements
>>> Origin URL:
>>>
>>> GObject
>>> +----GstObject
>>> +----GstElement
>>> +----MdGstElement
>>> +----MdGstDemux
>>>
>>> Pad Templates:
>>> SRC template: 'src_index'
>>> Availability: Sometimes
>>> Capabilities:
>>> application/x-md-index
>>>
>>> SRC template: 'src_spts'
>>> Availability: Sometimes
>>> Capabilities:
>>> video/mpegts
>>> mpegversion: 2
>>> systemstream: true
>>> packetsize: [ 188, 192 ]
>>>
>>> SRC template: 'src_aud'
>>> Availability: Sometimes
>>> Capabilities:
>>> audio/mpeg
>>> mpegversion: { 1, 2, 4 }
>>> audio/x-lpcm
>>> width: { 16, 20, 24 }
>>> rate: { 48000, 96000 }
>>> channels: [ 1, 8 ]
>>> dynamic_range: [ 0, 255 ]
>>> emphasis: { false, true }
>>> mute: { false, true }
>>> audio/x-ac3
>>> audio/x-eac3
>>> audio/x-dts
>>> audio/x-private-ts-lpcm
>>>
>>> SRC template: 'src_vid'
>>> Availability: Sometimes
>>> Capabilities:
>>> video/mpeg
>>> mpegversion: { 1, 2, 4 }
>>> systemstream: false
>>> video/x-h264
>>> video/x-wmv
>>> wmvversion: 3
>>> format: WVC1
>>>
>>> SINK template: 'sink'
>>> Availability: Always
>>> Capabilities:
>>> video/mpeg
>>> mpegversion: 2
>>> systemstream: true
>>> video/mpegts
>>> mpegversion: 2
>>> systemstream: true
>>> packetsize: [ 188, 192 ]
>>>
>>>
>>> Element Flags:
>>> no flags set
>>>
>>> Element Implementation:
>>> Has change_state() function: md_demux_change_state
>>>
>>> Element has no clocking capabilities.
>>> Element has no indexing capabilities.
>>> Element has no URI handling capabilities.
>>>
>>> Pads:
>>> SINK: 'sink'
>>> Implementation:
>>> Has chainfunc(): md_gst_element_sink_chain
>>> Has custom eventfunc(): md_gst_element_sink_event
>>> Has custom queryfunc(): gst_pad_query_default
>>> Has custom iterintlinkfunc():
>>> gst_pad_iterate_internal_links_default
>>> Has setcapsfunc(): md_gst_demux_sinkpad_setcaps
>>> Has acceptcapsfunc(): gst_pad_acceptcaps_default
>>> Pad Template: 'sink'
>>>
>>> Element Properties:
>>> name : The name of the object
>>> flags: readable, writable
>>> String. Default: null Current: "mdgstdemux0"
>>> use-buffering : Permits join multiple buffers to feed 32kb
>>> buffers to device
>>> flags: readable, writable
>>> Boolean. Default: true Current: true
>>> stream-time-offset : Specifies an offset in ns to apply on clock
>>> synchronization.
>>> flags: readable, writable
>>> Unsigned Integer64. Range: 0 -
>>> 18446744073709551615 Default: 0 Current: 0
>>> pids : The comma-separated list of PIDs to be demuxed.
>>> Value may be base-10, or in 0xABC hex format.
>>> flags: writable
>>> String. Default: "-1" Write only
>>> program : The program number to demux. If set along with
>>> 'pids', or auto=true, this will give the demux a hint as to which PMT to
>>> process. Without pids, or auto=true, this will trigger conversion from
>>> MPTS to SPTS. Value may be base-10, or in 0xABC hex format.
>>> flags: writable
>>> String. Default: "-1" Write only
>>> auto : If true, demux will automatically play the
>>> default Video and Audio streams
>>> flags: writable
>>> Boolean. Default: true Write only
>>> pmt-info : GObject with properties containing information
>>> from the TS PMT about the currently selected program and its streams
>>>
>>> flags: Object of type "MDTsPmtInfo"
>>>
>>> Element Signals:
>>> "pad-added" : void user_function (GstElement* object,
>>> GstPad* arg0,
>>> gpointer user_data);
>>> "pad-removed" : void user_function (GstElement* object,
>>> GstPad* arg0,
>>> gpointer user_data);
>>> "no-more-pads" : void user_function (GstElement* object,
>>> gpointer user_data);
>>>
>>> (gst-inspect-0.10:3870): GLib-GObject-WARNING **: invalid unclassed
>>> pointer in cast to `GstPad'
>>>
>>> (gst-inspect-0.10:3870): GStreamer-CRITICAL **:
>>> gst_element_remove_pad: assertion `GST_IS_PAD (pad)' failed
>>>
>>> Thanks,
>>> Yogesh
>>>
>>>
>>> On Fri, Aug 30, 2013 at 6:00 PM, Robert Krakora <
>>> rob.krakora at messagenetsystems.com> wrote:
>>>
>>>> What is the output of "gst-inspect mdtsdemux". mdtsdemux is not in
>>>> plugins good, bad or ugly. Is it a custom plugin or did you mean
>>>> mpegtsdemux?
>>>>
>>>>
>>>> On Fri, Aug 30, 2013 at 8:26 AM, Yogesh Tyagi <yogesh.bit2006 at gmail.com
>>>> > wrote:
>>>>
>>>>> Hi,
>>>>>
>>>>> I am using following command line:
>>>>> gst-launch filesrc location=mpeg2_333_mhz.ts ! mdtsdemux
>>>>> program-number=2 name=d ! q
>>>>> ueue ! mpeg2_viddec ! queue max-size-buffers=3 ! vidpproc ! vidre
>>>>> nd_sink d. ! queue ! audio_sink
>>>>>
>>>>> I am working on mdtsdemux demux plugin in which I have added
>>>>> get_propery method to get pmt-info but I don't know how do I test my
>>>>> implementation.
>>>>>
>>>>> Thanks,
>>>>> Yogesh
>>>>>
>>>>>
>>>>> On Fri, Aug 30, 2013 at 5:44 PM, Robert Krakora <
>>>>> rob.krakora at messagenetsystems.com> wrote:
>>>>>
>>>>>> Hi Yogesh,
>>>>>>
>>>>>> It would help if you included the gst-launch command line or a
>>>>>> snippet of your source. At a minimum, at least tell us what plugins
>>>>>> comprise your pipeline.
>>>>>>
>>>>>> Best Regards,
>>>>>>
>>>>>> Rob Krakora
>>>>>>
>>>>>>
>>>>>> On Fri, Aug 30, 2013 at 8:09 AM, Yogesh Tyagi <
>>>>>> yogesh.bit2006 at gmail.com> wrote:
>>>>>>
>>>>>>> Can somebody help me find answer to this query?
>>>>>>> How can get_property method be explicitly invoked in gstreamer using
>>>>>>> some tools like gst-launch?
>>>>>>>
>>>>>>> Thanks,
>>>>>>> Yogesh
>>>>>>>
>>>>>>>
>>>>>>> On Tue, Aug 27, 2013 at 5:35 PM, Yogesh Tyagi <
>>>>>>> yogesh.bit2006 at gmail.com> wrote:
>>>>>>>
>>>>>>>> Hi,
>>>>>>>>
>>>>>>>> I got to work on a gstreamer based test app which plays media
>>>>>>>> from http source.In this application following callback has been registered
>>>>>>>> to receive pmt information.
>>>>>>>>
>>>>>>>> g_signal_connect(G_OBJECT(demuxer), "notify::pmt-info",
>>>>>>>> (GCallback) demuxer_notify_pmt_info, NULL);
>>>>>>>>
>>>>>>>> When I run this application I never see "demuxer_notify_pmt_info"
>>>>>>>> method getting called.
>>>>>>>> Can somebody please let me know when this callback function will be
>>>>>>>> activated so that I can see the pmt info of the stream.
>>>>>>>>
>>>>>>>> Is there any way to invoke get_property methods of plugins like
>>>>>>>> e.g set_property methods can be invoked with gst-launch when we pass
>>>>>>>> "property-name=value" to gst-launch.
>>>>>>>>
>>>>>>>> Thanks,
>>>>>>>> Yogesh
>>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> _______________________________________________
>>>>>>> gstreamer-devel mailing list
>>>>>>> gstreamer-devel at lists.freedesktop.org
>>>>>>> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
>>>>>>>
>>>>>>>
>>>>>>
>>>>>>
>>>>>> --
>>>>>>
>>>>>> Rob Krakora,
>>>>>> Senior Software Engineer
>>>>>>
>>>>>> MessageNet Systems
>>>>>> 101 E Carmel Dr, Suite 105
>>>>>> Carmel, IN 46032
>>>>>>
>>>>>> MessageNetSystems.com<http://www.messagenetcommunicationsystems.com/?utm_source=email+signature&utm_medium=email&utm_campaign=email+signature+to+homepage>
>>>>>> Rob.Krakora at MessageNetSystems.com <rob.krakora at messagenetsystems.com>
>>>>>> P: 317.566.1677, 212
>>>>>> F: 317.663.0808
>>>>>>
>>>>>> For the latest news, information, and blogs, please be sure to visit,
>>>>>> follow, and like us...
>>>>>>
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>>>>>> _______________________________________________
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>>>>>> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
>>>>>>
>>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> gstreamer-devel mailing list
>>>>> gstreamer-devel at lists.freedesktop.org
>>>>> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
>>>>>
>>>>>
>>>>
>>>>
>>>> --
>>>>
>>>> Rob Krakora,
>>>> Senior Software Engineer
>>>>
>>>> MessageNet Systems
>>>> 101 E Carmel Dr, Suite 105
>>>> Carmel, IN 46032
>>>>
>>>> MessageNetSystems.com<http://www.messagenetcommunicationsystems.com/?utm_source=email+signature&utm_medium=email&utm_campaign=email+signature+to+homepage>
>>>> Rob.Krakora at MessageNetSystems.com <rob.krakora at messagenetsystems.com>
>>>> P: 317.566.1677, 212
>>>> F: 317.663.0808
>>>>
>>>> For the latest news, information, and blogs, please be sure to visit,
>>>> follow, and like us...
>>>>
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>>>>
>>>> _______________________________________________
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>>>>
>>>>
>>>
>>>
>>> _______________________________________________
>>> gstreamer-devel mailing listgstreamer-devel at lists.freedesktop.orghttp://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
>>>
>>>
>>> --
>>>
>>
>>
>> --
>>
>> _______________________________________________
>> gstreamer-devel mailing list
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>> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
>>
>>
>
>
> --
>
> Rob Krakora,
> Senior Software Engineer
>
> MessageNet Systems
> 101 E Carmel Dr, Suite 105
> Carmel, IN 46032
>
> MessageNetSystems.com<http://www.messagenetcommunicationsystems.com/?utm_source=email+signature&utm_medium=email&utm_campaign=email+signature+to+homepage>
> Rob.Krakora at MessageNetSystems.com <rob.krakora at messagenetsystems.com>
> P: 317.566.1677, 212
> F: 317.663.0808
>
> For the latest news, information, and blogs, please be sure to visit,
> follow, and like us...
>
>
> <http://www.messagenetcommunicationsystems.com/get-the-message-out-blog/?utm_source=email+signature&utm_medium=email&utm_campaign=gmail+signature+to+blog>
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> <http://twitter.com/MessageNet> <http://www.facebook.com/MessageNetsystems>
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