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Issue regarding pushing data

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Rahul Nikose

Issue regarding pushing data

Hi Everyone,

     I have develop demuxer which pull data from filesrc then I parse data inside my demuxer .
     I have implemented activate_pull and _loop() ..so to pull data from Filesrc
     I am able to pull data and parse header , but after parsing data when i am trying to push
   data into decoder.....I see nothing happening ( same pipeline work with gstremer QTdemux element.)

      Inside _loop function I have implemented
      1. find_video_cap() ..which will find appropriate cap
2. gst_pad_set_caps (filter->srcpad_video, caps) which will set caps on srcpad
      3. gst_buffer_set_caps (buf,caps);     which will set caps onto buffer
      4. Also set required field inside buffer
            gst_buffer_set_data ( buf, pData, nLength);
            GST_BUFFER_SIZE (buf)       = nLength;
              GST_BUFFER_TIMESTAMP(buf)   = pMilliSec/1000000; (convert milisec into nano sec and then insert)
      5. gst_pad_push (GST_PAD_CAST(filter->srcpad_video), buf); this will push buffer to decoder..

            Is there somthing I am missing ..... Give me some clue..
--
Thanks and warm Regards
Rahul S. Nikose
09739949798

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Edward Hervey-2

Re: Issue regarding pushing data

On Mon, 2008-07-21 at 17:39 +0530, Rahul Nikose wrote:

> Hi Everyone,
>
> I have develop demuxer which pull data from filesrc then I parse
> data inside my demuxer .
> I have implemented activate_pull and _loop() ..so to pull data
> from Filesrc
> I am able to pull data and parse header , but after parsing data
> when i am trying to push
> data into decoder.....I see nothing happening ( same pipeline
> work with gstremer QTdemux element.)
>
> Inside _loop function I have implemented
> 1. find_video_cap() ..which will find appropriate cap
> 2. gst_pad_set_caps (filter->srcpad_video, caps) which will
> set caps on srcpad
> 3. gst_buffer_set_caps (buf,caps); which will set caps onto
> buffer
> 4. Also set required field inside buffer
> gst_buffer_set_data ( buf, pData, nLength);
> GST_BUFFER_SIZE (buf) = nLength;
> GST_BUFFER_TIMESTAMP(buf) = pMilliSec/1000000;
> (convert milisec into nano sec and then insert)

If pMilliSec is in milliseconds, you should be multiplying that value
by GST_MSECOND to get nanoseconds. If not, you're going to end up with
really small values, which will make those buffers plaid back REALLY
FAST.

my 2 cents,

Edward

> 5. gst_pad_push (GST_PAD_CAST(filter->srcpad_video), buf);
> this will push buffer to decoder..
>
> Is there somthing I am missing ..... Give me some clue..
> --
> Thanks and warm Regards
> Rahul S. Nikose
> 09739949798
> -------------------------------------------------------------------------
> This SF.Net email is sponsored by the Moblin Your Move Developer's challenge
> Build the coolest Linux based applications with Moblin SDK & win great prizes
> Grand prize is a trip for two to an Open Source event anywhere in the world
> http://moblin-contest.org/redirect.php?banner_id=100&url=/
> _______________________________________________ gstreamer-devel mailing list [hidden email] https://lists.sourceforge.net/lists/listinfo/gstreamer-devel