[gst-devel] C code to gstreamer plugin conversion

[Stefan Kost]

hi,

please leave the discussion on the list.

arnabsamanta schrieb:
> Hi Stefan,
> 	thanks a lot for your reply.
> 	i have gone through the pwg. and i know the basics of plug ins.
> 	i just have a small confusion. when i already have a C++ code with a number
> of functions calling each other , so in the _init() function do i need to
> initialize only the main calling function of the code ? in that case can i
> name and treat the function as the chain function ?
>   
All gstreamer elements are gobjects. You want to read the first chapter
in gobject api docs as well. a gobject has a lifecycle. The _init()
function is called once for each new instance. A _chain() function is
used to process chunks of data. You need to implement a gobject and call
your c++ functions at the appropriate place. In _init() you would e.g.
do a new() of the c++ class and store the instance in the gobject
instance. But as I said, please check the existing c++ plugins.

Stefan


> thanks and regards,
>  ~Arnab
>
>
> -----Original Message-----
> From: Stefan Kost [mailto:ensonic at hora-obscura.de]
> Sent: Monday, September 22, 2008 7:45 PM
> To: arnabsamanta at tataelxsi.co.in; Discussion of the development of
> GStreamer
> Subject: Re: [gst-devel] C code to gstreamer plugin conversion
>
>
> hi,
>
> arnabsamanta schrieb:
>   
>>  Hi
>> 	i have an application which has a number of C++ files and i need to make
>> the application as a gstreamer plug in.
>> 	what are the basic steps to do so ?
>> 	i know how to create a source and a sink pad.
>> 	do i need to declare all functions of all the C++ codes within the init
>> functions ?
>>
>>     
> Please read the plugin writers guide. Also have a look at the
> gst-plugins-* packages which has a few c++ based plugins (just search
> for *.cc)
>
> Stefan
>
>   
>>  regards,
>>  	~Arnab
>>
>>
>>
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