<meta http-equiv="content-type" content="text/html; charset=utf-8"><div>Hi expert,</div><div>Thanks for your reply for my question, </div><div>Appreciate so much.<br><br>從我的 iPad 傳送</div><div><br>Sebastian Dröge-3 [via GStreamer-devel] <<a href="/user/SendEmail.jtp?type=node&node=4665086&i=0" target="_top" rel="nofollow" link="external">[hidden email]</a>> 於 2014/2/4 下午11:10 寫道：<br><br></div><blockquote style='border-left:2px solid #CCCCCC;padding:0 1em' type="cite"><div>

        On Sa, 2014-02-01 at 00:19 -0800, morris.yang wrote:
<br>> Hi, I am a audio decoder element provider,and I still don't understand when
<br>> app change audio tracks, what should the audio decoder element do anything
<br>> else? or just the same way with a normal decoding negotiation?Do I need to
<br>> add some additional actions in my original decoder element?For example, I
<br>> may need to handle 1.the caps2.the set_property for "pass through"=ture,
<br>> then I can know which audio format needs to be decoded and do it?Could give
<br>> me some reference for audio decoder element needs do for changing audio
<br>> tracks?Many thanksMorris
<br><br>If you mean the application audio track selection, your element does not
<br>have to do anything special at all. Just work as before.
<br><br>If you mean changes of the input format of your audio decoder, you'll
<br>get notified about that by changing caps. You will need to handle that
<br>and reconfigure your decoder then.
<br><br><br>Also you should consider using GstAudioDecoder as base class for your
<br>decoders as it handles most of the common behaviour of audio decoders in
<br>GStreamer and you'll have to write much less code.
<br><br>-- 
<br>Sebastian Dröge, Centricular Ltd - <a href="http://www.centricular.com" target="_top" rel="nofollow" link="external">http://www.centricular.com</a><br>Expertise, Straight from the Source
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