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

[rakesh sharma-2]

I am able to detect my plugin with playbin after changing inside  GST_PLUGIN_DEFINE as GPL. Is there any other way rather than GPL ? can i gave my own user define name their?.

[Donny Viszneki]

On Mon, Feb 16, 2009 at 8:07 AM, rakesh sharma
<[hidden email]> wrote:
> I am able to detect my plugin with playbin after changing inside
> GST_PLUGIN_DEFINE as GPL. Is there any other way rather than GPL ? can i
> gave my own user define name their?.

I don't know, but if you implement your own playbin-alike, I would
guess you don't need to use GPL for your plugin.

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[rakesh sharma-2]

i am getting this message

** Message: don't know how to handle video/mpeg, mpegversion=(int)4, systemstream=(boolean)false, codec_data=(buffer)000001b0f2000001b50ee040c0cf0000010000000120008440fa28a021e0a31f, width=(int)640, height=(int)480, framerate=(fraction)30/1
ERROR: pipeline doesn't want to preroll.
can any one please let me know what should be my caps...
i tried using like this
dec->sink_caps = gst_caps_from_string("video/mpeg, "
                                           "mpegversion = (int) [0, MAX] , "
                                           "systemstream = (boolean) [true, false] , "
                                           "codec_data=(buffer), "
                                           "width = (int) [ 0, MAX ], "
                                           "height = (int) [ 0, MAX ], "
                                           "framerate = (fraction) [ 1, MAX ]");
but its not working.

[Donny Viszneki]

On Tue, Feb 17, 2009 at 2:37 AM, rakesh sharma
<[hidden email]> wrote:

> can any one please let me know what should be my caps...
> i tried using like this
> dec->sink_caps = gst_caps_from_string("video/mpeg, "
>                                "mpegversion = (int) [0, MAX] , "
>                                "systemstream = (boolean) [true, false] , "
>                                "codec_data=(buffer), "
>                                "width = (int) [ 0, MAX ], "
>                                "height = (int) [ 0, MAX ], "
>                                "framerate = (fraction) [ 1, MAX ]");
> but its not working.

Probably of no consequence: The width and height probably shouldn't be
zero in any video stream (can they?) so maybe width and height ranges
should be [1,MAX] instead of [0,MAX].

But it looks to my gstreamer-inexperienced eyes that your framerate
fraction might be the source of the problem. In gst-plugins-base
0.10.22 I found these two examples:

./tests/check/elements/videotestsrc.c:    "framerate = (fraction) [ 0/1, MAX ]"
./sys/ximage/ximagesink.c:        "framerate = (fraction) [ 0, MAX ], "

The first one confirmed (or so I thought) my suspicions about your
fraction range declaration, but the second one unconfirmed them :(

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[Donny Viszneki]

On Tue, Feb 17, 2009 at 2:17 PM, Donny Viszneki
<[hidden email]> wrote:
> ./tests/check/elements/videotestsrc.c:    "framerate = (fraction) [ 0/1, MAX ]"
> ./sys/ximage/ximagesink.c:        "framerate = (fraction) [ 0, MAX ], "

MikeS__ and __tim from #gstreamer have told me that either form is
acceptable in "string form," and gst_caps_from_string() will interpret
either form to mean the fraction range [0/1, G_MAX_INT/1]

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[michael smith-6-3]

On Mon, Feb 16, 2009 at 11:37 PM, rakesh sharma
<[hidden email]> wrote:

>
> i am getting this message
>
> ** Message: don't know how to handle video/mpeg, mpegversion=(int)4,
> systemstream=(boolean)false,
> codec_data=(buffer)000001b0f2000001b50ee040c0cf0000010000000120008440fa28a021e0a31f,
> width=(int)640, height=(int)480, framerate=(fraction)30/1
> ERROR: pipeline doesn't want to preroll.
> can any one please let me know what should be my caps...
> i tried using like this
> dec->sink_caps = gst_caps_from_string("video/mpeg, "
>                                           "mpegversion = (int) [0, MAX] , "
>                                           "systemstream = (boolean) [true,
> false] , "
>                                           "codec_data=(buffer), "
>                                           "width = (int) [ 0, MAX ], "
>                                           "height = (int) [ 0, MAX ], "
>                                           "framerate = (fraction) [ 1, MAX
> ]");
> but its not working.

You haven't provided enough context here - what do you use
dec->sink_caps for? These look more like template caps anyway, but
dec->sink_caps implies that you're setting them on an instance.

So maybe your template caps are wrong; you haven't shown those at all.
Your actual buffer/pad caps you haven't shown anywhere (unless this is
what you gave above, in which case it's very obviously wrong).

Additional points:
 -  "codec_data=(buffer), " - if this parses at all, I doubt it means
anything. It certainly won't do anything useful.
 - "mpegversion = (int) [0, MAX] , " - I doubt you mean to say that
your plugin supports every MPEG video codec, both current and future.
Maybe you wanted that to say "mpegversion = 4"

Mike

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[Stefan Sauer]

rakesh sharma schrieb:
> I am able to detect my plugin with playbin after changing inside
> GST_PLUGIN_DEFINE as GPL. Is there any other way rather than GPL ? can i
> gave my own user define name their?.

>From the docs (GstPluginDesc):

The licence parameter must be one of: LGPL, GPL, QPL, GPL/QPL, MPL, BSD,
MIT/X11, Proprietary, unknown.

Stefan

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