How to register Gstreamer Plugin with Playbin so that playbin detect my plugins

[rakesh sharma-2]

Hi Friends I have written one plugin now i want that the plugin should be called with playbin....
can anybody please help me its really urgent...!!!!

[michael smith-6-3]

On Mon, Jan 19, 2009 at 3:35 AM, rakesh sharma
<[hidden email]> wrote:
>
> Hi Friends I have written one plugin now i want that the plugin should be
> called with playbin....
> can anybody please help me its really urgent...!!!!

You haven't given much context for us to go on here.

Is your plugin a source? A sink? A demuxer or decoder?

The key points to check, if you want playbin to autoplug it, are:
 - correct element details class
 - non-zero rank (and higher than other alternatives playbin might select)
 - correct caps templates.

We can't be any more specific with the info you've given.

Mike

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[rakesh sharma-2]

I have written AVI decoder. for AVI decoder i want that playbin should detect and properly use my decoder. please provide me solution with example , i'll great thankful for you.

Michael Smith-7 wrote

On Mon, Jan 19, 2009 at 3:35 AM, rakesh sharma
<[e-mail]> wrote:
>
> Hi Friends I have written one plugin now i want that the plugin should be
> called with playbin....
> can anybody please help me its really urgent...!!!!

You haven't given much context for us to go on here.

Is your plugin a source? A sink? A demuxer or decoder?

The key points to check, if you want playbin to autoplug it, are:
 - correct element details class
 - non-zero rank (and higher than other alternatives playbin might select)
 - correct caps templates.

We can't be any more specific with the info you've given.

Mike

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[rakesh sharma-2]

I have written mp4sp decoder plugin and i want this plugin should be detected and used by playbin ....
Can anybody help me with a simple example....!!!

Michael Smith-7 wrote

On Mon, Jan 19, 2009 at 3:35 AM, rakesh sharma
<[e-mail]> wrote:
>
> Hi Friends I have written one plugin now i want that the plugin should be
> called with playbin....
> can anybody please help me its really urgent...!!!!

You haven't given much context for us to go on here.

Is your plugin a source? A sink? A demuxer or decoder?

The key points to check, if you want playbin to autoplug it, are:
 - correct element details class
 - non-zero rank (and higher than other alternatives playbin might select)
 - correct caps templates.

We can't be any more specific with the info you've given.

Mike

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[Sudarshan Bisht]

set rank GST_RANK_PRIMARY in plugins_init function.

On Tue, Jan 20, 2009 at 11:18 AM, rakesh sharma <[hidden email]> wrote:

I have written mp4sp decoder plugin and i want this plugin should be detected
and used by playbin ....
Can anybody help me with a simple example....!!!

Michael Smith-7 wrote:
>
> On Mon, Jan 19, 2009 at 3:35 AM, rakesh sharma
> <[hidden email]> wrote:
>>
>> Hi Friends I have written one plugin now i want that the plugin should be
>> called with playbin....
>> can anybody please help me its really urgent...!!!!
>
> You haven't given much context for us to go on here.
>
> Is your plugin a source? A sink? A demuxer or decoder?
>
> The key points to check, if you want playbin to autoplug it, are:
>  - correct element details class
>  - non-zero rank (and higher than other alternatives playbin might select)
>  - correct caps templates.
>
> We can't be any more specific with the info you've given.
>
> Mike
>
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>

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Regards,

Sudarshan Bisht

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[rakesh sharma-2]

This is not correct.....
it dosn't have any effect on playbin ...GST_RANK_PRIMARY

sudarshan bisht wrote

set rank GST_RANK_PRIMARY in plugins_init function.

On Tue, Jan 20, 2009 at 11:18 AM, rakesh sharma
<[e-mail]>wrote:

>
> I have written mp4sp decoder plugin and i want this plugin should be
> detected
> and used by playbin ....
> Can anybody help me with a simple example....!!!
>
>
>
> Michael Smith-7 wrote:
> >
> > On Mon, Jan 19, 2009 at 3:35 AM, rakesh sharma
> > <[e-mail]> wrote:
> >>
> >> Hi Friends I have written one plugin now i want that the plugin should
> be
> >> called with playbin....
> >> can anybody please help me its really urgent...!!!!
> >
> > You haven't given much context for us to go on here.
> >
> > Is your plugin a source? A sink? A demuxer or decoder?
> >
> > The key points to check, if you want playbin to autoplug it, are:
> >  - correct element details class
> >  - non-zero rank (and higher than other alternatives playbin might
> select)
> >  - correct caps templates.
> >
> > We can't be any more specific with the info you've given.
> >
> > Mike
> >
> >
> ------------------------------------------------------------------------------
> > This SF.net email is sponsored by:
> > SourcForge Community
> > SourceForge wants to tell your story.
> > http://p.sf.net/sfu/sf-spreadtheword
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> > [e-mail]
> > https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
> >
> >
>
> --
> View this message in context:
> http://www.nabble.com/How-to-register-Gstreamer-Plugin-with-Playbin-so-that-playbin-detect-my-plugins-tp21541362p21557477.html
> Sent from the GStreamer-devel mailing list archive at Nabble.com.
>
>
>
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Regards,

Sudarshan Bisht

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[Tim-Philipp Müller-2]

On Mon, 2009-01-19 at 21:48 -0800, rakesh sharma wrote:

> I have written mp4sp decoder plugin and i want this plugin should be detected
> and used by playbin ....

Mike has given you all the details you need. How about you give us the
gst-inspect output for your element so we can double-check the details?

Alternatively, you could provide us with details on *all* of the points
Mike mentioned, namely:

> > The key points to check, if you want playbin to autoplug it, are:
> >  - correct element details class
> >  - non-zero rank (and higher than other alternatives playbin might select)
> >  - correct caps templates.


> Can anybody help me with a simple example....!!!

Almost every single decoder and demuxer in gst-plugins-base and
gst-plugins-good will do as an example.

Cheers
 -Tim



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[rakesh sharma-2]

i am doing only  gst_element_register(plugin, type_name, rank, type);
i am not doing any other registration.....

gst-inspect of mp4sp_dec is :

[root@bghwf9861 testelement]# gst-inspect mp4sp_dec
Factory Details:
  Long name:    mp4sp
  Class:        video/decoder
  Description:  mp4sp Video Decoder
  Author(s):    Rakesh <[e-mail]>
  Rank:         unknown (260)

Plugin Details:
  Name:                 rakesh_plugin
  Description:          Rakesh Sharma
  Filename:             /usr/local/lib/librakesh_plugin.so
  Version:              0.1
  License:              Proprietary
  Source module:        rakesh_plugin
  Binary package:       rakesh_plugin
  Origin URL:           Rakesh <[e-mail]>

GObject
 +----GstObject
       +----GstElement
             +----psf_mp4sp_dec

Pad Templates:
  SINK template: 'sink'
    Availability: Always
    Capabilities:
      video/x-mp4-sp
                  width: [ 0, 2147483647 ]
                 height: [ 0, 2147483647 ]
              framerate: [ 1, 2147483647 ]

  SRC template: 'src'
    Availability: Always
    Capabilities:
      video/x-raw-yuv
                  width: [ 1, 2147483647 ]
                 height: [ 1, 2147483647 ]
              framerate: [ 0/1, 2147483647/1 ]


Element Flags:
  no flags set

Element Implementation:
  No loopfunc(), must be chain-based or not configured yet
  Has change_state() function: element_change_state_func
  Has custom save_thyself() function: element_save_thyself
  Has custom restore_thyself() function: element_restore_thyself

Element has no clocking capabilities.
Element has no indexing capabilities.

Pads:
  SRC: 'src'
    Implementation:
      Has custom eventfunc(): 0xbbcf4c
    Pad Template: 'src'
  SINK: 'sink'
    Implementation:
      Has chainfunc(): 0xbbc269
      Has custom eventfunc(): 0xbbcf73
      Has bufferallocfunc(): video_dec_buffer_alloc
    Pad Template: 'sink'

Element Properties:
  name                : The name of the object
                        flags: readable, writable
                        String. Default: null Current: "mp4sp_dec0"

[Sudarshan Bisht]

 Why it is showing             Rank:         unknown (260)        ?

On Tue, Jan 20, 2009 at 3:20 PM, rakesh sharma <[hidden email]> wrote:

i am doing only  gst_element_register(plugin, type_name, rank, type);
i am not doing any other registration.....

gst-inspect of mp4sp_dec is :

[root@bghwf9861 testelement]# gst-inspect mp4sp_dec
Factory Details:
 Long name:    mp4sp
 Class:        video/decoder
 Description:  mp4sp Video Decoder
 Author(s):    Rakesh <[hidden email]>
 Rank:         unknown (260)

Plugin Details:
 Name:                 rakesh_plugin
 Description:          Rakesh Sharma
 Filename:             /usr/local/lib/librakesh_plugin.so
 Version:              0.1
 License:              Proprietary
 Source module:        rakesh_plugin
 Binary package:       rakesh_plugin
 Origin URL:           Rakesh <[hidden email]>

GObject
 +----GstObject
      +----GstElement
            +----psf_mp4sp_dec

Pad Templates:
 SINK template: 'sink'
   Availability: Always
   Capabilities:
     video/x-mp4-sp
                 width: [ 0, 2147483647 ]
                height: [ 0, 2147483647 ]
             framerate: [ 1, 2147483647 ]

 SRC template: 'src'
   Availability: Always
   Capabilities:
     video/x-raw-yuv
                 width: [ 1, 2147483647 ]
                height: [ 1, 2147483647 ]
             framerate: [ 0/1, 2147483647/1 ]


Element Flags:
 no flags set

Element Implementation:
 No loopfunc(), must be chain-based or not configured yet
 Has change_state() function: element_change_state_func
 Has custom save_thyself() function: element_save_thyself
 Has custom restore_thyself() function: element_restore_thyself

Element has no clocking capabilities.
Element has no indexing capabilities.

Pads:
 SRC: 'src'
   Implementation:
     Has custom eventfunc(): 0xbbcf4c
   Pad Template: 'src'
 SINK: 'sink'
   Implementation:
     Has chainfunc(): 0xbbc269
     Has custom eventfunc(): 0xbbcf73
     Has bufferallocfunc(): video_dec_buffer_alloc
   Pad Template: 'sink'

Element Properties:
 name                : The name of the object
                       flags: readable, writable
                       String. Default: null Current: "mp4sp_dec0"

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Regards,

Sudarshan Bisht

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[Tim-Philipp Müller-2]

On Tue, 2009-01-20 at 01:50 -0800, rakesh sharma wrote:

> [root@bghwf9861 testelement]# gst-inspect mp4sp_dec
> Factory Details:
>   Long name:    mp4sp
>   Class:        video/decoder

This should be: 'Codec/Decoder/Video'

Cheers
 -Tim



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[michael smith-6-3]

On Tue, Jan 20, 2009 at 2:22 AM, sudarshan bisht
<[hidden email]> wrote:
>  Why it is showing             Rank:         unknown (260)        ?

There are a few "named" ranks - minimal, normal, maximum, and so on.
But rank is just a number, so you can have intermediate values too -
which this plugin has. That's actually fine.

>
> On Tue, Jan 20, 2009 at 3:20 PM, rakesh sharma <[hidden email]>
> wrote:
>>
>> i am doing only  gst_element_register(plugin, type_name, rank, type);
>> i am not doing any other registration.....
>>
>> gst-inspect of mp4sp_dec is :
>>
>> [root@bghwf9861 testelement]# gst-inspect mp4sp_dec
>> Factory Details:
>>  Long name:    mp4sp
>>  Class:        video/decoder
>>  Description:  mp4sp Video Decoder
>>  Author(s):    Rakesh <[hidden email]>
>>  Rank:         unknown (260)
>>
>> Plugin Details:
>>  Name:                 rakesh_plugin
>>  Description:          Rakesh Sharma
>>  Filename:             /usr/local/lib/librakesh_plugin.so
>>  Version:              0.1
>>  License:              Proprietary
>>  Source module:        rakesh_plugin
>>  Binary package:       rakesh_plugin
>>  Origin URL:           Rakesh <[hidden email]>
>>
>> GObject
>>  +----GstObject
>>       +----GstElement
>>             +----psf_mp4sp_dec
>>
>> Pad Templates:
>>  SINK template: 'sink'
>>    Availability: Always
>>    Capabilities:
>>      video/x-mp4-sp
>>                  width: [ 0, 2147483647 ]
>>                 height: [ 0, 2147483647 ]
>>              framerate: [ 1, 2147483647 ]

This looks wrong in several ways:
 "video/x-mp4-sp" isn't, as far as I know, used anywhere in gstreamer.
Of course, you might be using a custom demuxer that produces it, but
you didn't mention anything like that.

So I assume your decoder isn't actually compatible with any types that
any demuxers might output.

Additionally, framerate in gstreamer is a fraction, you have it here
as an integer.

Make sure you fix up the other things mentioned by other people too.

Mike

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[rakesh sharma-2]

i am using the caps like this
src caps
src_template = gst_pad_template_new("src", GST_PAD_SRC, GST_PAD_ALWAYS,
                         gst_caps_from_string("audio/x-raw-int, "
                                          "rate = (int) [ 1, MAX ], "
                                          "endianness = (int) BYTE_ORDER, "
                                          "signed = (boolean) { true, false }, "
                                          "channels = (int) { 1, 2}, "
                                          "width = (int) { 8, 16 }, "
                                         "depth = (int) { 8, 16 }"));

and sink caps
klass->dec->sink_caps = gst_caps_from_string("audio/x-mp3-unknown, "
                                          "outsize = (int) [ 1, MAX ], "
                                          "layer = (int) {1,2,3}, "
                                          "version = (int) {1,2,25}, "
                                          "rate = (int) { 8000, 11025, 12000, 16000, 22050, 24000, 32000, 44100, 48000 }, "
                                          "channels = (int) { 1, 2 }");
sink_template = gst_pad_template_new("sink", GST_PAD_SINK, GST_PAD_ALWAYS,
                                        klass->dec->sink_caps);

If i am doing it GST_STATIC_CAPS ("ANY"));
then its working.... might be the caps are not proper ....
can u suggest me the proper caps for mp3 parser and the proper way...!!

[Tim-Philipp Müller-2]

On Tue, 2009-01-20 at 23:01 -0800, rakesh sharma wrote:

> and sink caps
> klass->dec->sink_caps = gst_caps_from_string("audio/x-mp3-unknown, "
>                                           "outsize = (int) [ 1, MAX ], "
>                                           "layer = (int) {1,2,3}, "
>                                           "version = (int) {1,2,25}, "
>                                           "rate = (int) { 8000, 11025,
> 12000, 16000, 22050, 24000, 32000, 44100, 48000 }, "
>                                           "channels = (int) { 1, 2 }");
> sink_template = gst_pad_template_new("sink", GST_PAD_SINK, GST_PAD_ALWAYS,
>                                         klass->dec->sink_caps);
>
> If i am doing it GST_STATIC_CAPS ("ANY"));
> then its working.... might be the caps are not proper ....
> can u suggest me the proper caps for mp3 parser and the proper way...!!

Where did you get the audio/x-mp3-unknown caps from? If you want to be
compatible with other parts of GStreamer, like the typefinders, you
can't just make up new media types (unless you also register some
corresponding typefinder of your own as well).

Have a look at one of the existing mp3 decoders/parsers (mad,
mp3parse/mpegaudioparse) for the right caps.

Cheers
 -Tim



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[rakesh sharma-2]

For decoder we are givin Codec/Decoder/Audio in  GST_ELEMENT_DETAILS.
If i want to do same for demux then what i have to give in GST_ELEMENT_DETAILS?

[Tim-Philipp Müller-2]

On Wed, 2009-01-21 at 04:45 -0800, rakesh sharma wrote:

> For decoder we are givin Codec/Decoder/Audio in  GST_ELEMENT_DETAILS.
> If i want to do same for demux then what i have to give in
> GST_ELEMENT_DETAILS?

May I suggest you have a look at some of the existing demuxers and
parsers in gst-inspect (or their source code)?

Cheers
 -Tim



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[rakesh sharma-2]

Is there any way to know which elements are used by playbin......
I want to know which demux is used by decodebin.

[Dan Taylor-2]

> -----Original Message-----
> From: rakesh sharma [mailto:[hidden email]]
> Sent: Wednesday, January 21, 2009 11:22 PM
> To: [hidden email]
> Subject: Re: [gst-devel] How to register Gstreamer Plugin withPlaybin
so
> that playbin detect my plugins
>
>
> Is there any way to know which elements are used by playbin......
> I want to know which demux is used by decodebin.

If you use the "-m" option, you will see messages from the elements'
state
changes, and can get the elements from there.




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[Stefan Sauer]

rakesh sharma schrieb:
> Is there any way to know which elements are used by playbin......
> I want to know which demux is used by decodebin.
use -v for gst-launch

Stefan

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[rakesh sharma-2]

Can anybody tell me what this function do in depth... gst_element_make_from_uri()
the description is like this : Creates an element for handling the given URI
If i want that it will use my own created plugin is it possible ???
My plugin dont have the uri property, whether i have to add uri property and do some more changes ???

[michael smith-6-3]

On Tue, Jan 27, 2009 at 3:18 AM, rakesh sharma
<[hidden email]> wrote:
>
> Can anybody tell me what this function do in depth...
> gst_element_make_from_uri()
> the description is like this : Creates an element for handling the given URI
> If i want that it will use my own created plugin is it possible ???
> My plugin dont have the uri property, whether i have to add uri property and
> do some more changes ???

You plugin will need to implement the GstUriHandler interface (it's
customary, but not required, that it also have a uri property).

Mike

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