How does the tee element split data to multiple pads?

[bboyavatar]

Hi, Thanks so much for your reply! Do you mean that if I link the tee
element to gstomx component, such as omx_videomixer, it will do memcpy to
fill the input buffer of omx_videomixer?

2012/11/16 Stirling Westrup [via GStreamer-devel] <
ml-node+s966125n4656933h53 at n4.nabble.com>

> On Mon, Nov 12, 2012 at 9:11 PM, bboyavatar <[hidden email]<http://user/SendEmail.jtp?type=node&node=4656933&i=0>>
> wrote:
> > Hi, I have a question about the tee element. It is said that this
> element
> > splits the input data and feeds multiple output pads with the same data.
> I
> > read the sourc code and find that it uses gst_pad_push_data()function to
> > feed data to the srcpads. So, I wonder if it does the memcpy or just
> feeds
> > the srcpads with the buffer reference.
> > Could someone answer me? Thanks so much!
> >
>
> That's a more complex question than it sounds like. Whenever possible
> gstreamer passes references to buffers rather than using memcpy, but
> there are cases where this won't work. For example, if your tee
> connects to sinks that produce hardware buffers to fill out, then
> gstreamer will do memcpy operations to fill the hardware buffers.
>
> --
> Stirling Westrup
> Programmer, Entrepreneur.
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刘冰




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