[gst-embedded] questions on gst_pad_push() to send audio/video datato codec

[Zhao Bin-E6223C]

I think there is no difference to send out audio or video data to
downstream element.
 
If your audio device is not available or your decoder meet some error,
the data flow will return data_error sometime. Do you handle the error
in demux element?
 
It's better to handle the error in the element where happens and do
nothing in demux. Because the occasional data flow error don't effect
the pipline playback.
 
Zhao Bin (Brad) 

 

________________________________

From: gstreamer-embedded-bounces at lists.sourceforge.net
[mailto:gstreamer-embedded-bounces at lists.sourceforge.net] On Behalf Of
Shenhong Wang
Sent: Friday, June 06, 2008 6:10 PM
To: gstreamer-embedded at lists.sourceforge.net
Subject: [gst-embedded] questions on gst_pad_push() to send audio/video
datato codec




	Dear all,

	Now we are writing up a media demux element. It contains one
sink pad and two source pads (audio & video). The element is expected to
contact to next stage element (codec) in PUSH mode. After processing
data in chain() function, we call gst_pad_push to send the audio or
video to peer pads in codec elements (H.264 video or AAC). 

	a)       gst_pad_push returns back with 0 which looks
successfully for video data

	b)       gst_pad_push always return back with -5 for audio data.


	Actually we use same codes (but names) to finish the above
actions, however we got different results (o or -5). Would anyone of you
tell me what's the difference to send out audio/video data to their
codec? Thanks a lot!

	 

	Best Regards!

	Shenhong


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