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List:       gstreamer-devel
Subject:    Re: [gst-devel] Loop-based elements and pause state
From:       Daniel Gazard <dany42 () free ! fr>
Date:       2004-08-19 5:03:11
Message-ID: 86smajbtyo.fsf () macphisto ! dan ! homeunix ! net
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David Schleef <ds@schleef.org> writes:

> On Wed, Aug 18, 2004 at 10:33:33PM +0200, Daniel Gazard wrote:
>> I have wrote a GStreamer loop-based plugin, i.e. an element that enter
>> into an infinite processing loop (by opposition to chain-based
>> plugin).
>
> Loop-based elements are not "infinite loops", they are supposed to
> do as little as possible and then return.  Infinite-loop elements
> will fail miserably.

So the documentation have to be updated since I can read in the
«Loop-based elements» section:

 As opposed to chain-based elements, loop-based elements enter an
 infinite loop that looks like this:

  GstBuffer *buffer, *outbuffer;
 
  while (1) {
    buffer = gst_pad_pull (sinkpad);
    ...
    // process buffer, create outbuffer
    while (!done) {
      ....
      // optionally request another buffer
      buffer = gst_pad_pull (sinkpad);
      ....
    }
    ...
    gst_pad_push (srcpad, outbuffer);
  }




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