pmt-info callback not getting invoked
Robert Krakora
rob.krakora at messagenetsystems.com
Fri Aug 30 06:41:38 PDT 2013
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
>>>>>
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>>>>>
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>>>>> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
>>>>>
>>>>>
>>>>
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>>>> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
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>>>>
>>>
>>>
>>> --
>>>
>>> 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
>>>
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>>>
>>
>>
>> _______________________________________________
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>>
>>
>> --
>>
>
>
> --
>
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> gstreamer-devel mailing list
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>
--
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
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