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<div class="moz-cite-prefix">Il 27/05/2015 21:58, Chuck Crisler ha
scritto:<br>
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<div>No, I haven't selected a Windows tablet yet. My goal is
to learn Java and mobile programming, starting with
Android (because I own an Android phone), then
Windows/Windows tablet and Linux/Java, with an emphasis on
multimedia. GStreamer is the best multimedia platform
around (that I know of) and is (somewhat) portable across
those platforms. As a personal goal I am working to
develop a video conferencing app that runs on those
platforms, simply because I am familiar with GStreamer and
have worked in video conferencing for many years. This is
a personal/professional development project.<br>
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I had already thought of the appsrc approach. My only
concern is whether or not Android allows me access to the
image buffers. I have an app that displays from a camera
now, so I have the structure and the correct callback, but
haven't checked to verify access to the actual buffer -
tonight's project. Android seems to be rather paranoid and
restricts access to many things, either to make development
*VERY* easy (once you figure it out) or for security.<br>
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You can get NV21 or YV12 raw frames on all android devices (tested
with 4.1+), I use the appsrc approach since 3 years and it works
fine, <br>
<br>
Nicola<br>
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<div>As far a writing a 'proper' source element...well I spent
many years working on lower level Windows video (DX and
DirectShow). So I may take that on along with first
attempting to finish the camera work you began. I really
want to use the same basic pipeline on all of the systems.
And, of course, contributing to GStreamer would be another
asset on my resume.<br>
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Thank you for the guidance.<br>
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Chuck<br>
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<div class="gmail_extra"><br>
<div class="gmail_quote">On Wed, May 27, 2015 at 3:32
PM, Sebastian Dröge <span dir="ltr"><<a
moz-do-not-send="true"
href="mailto:sebastian@centricular.com"
target="_blank">sebastian@centricular.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex"><span
class="">On Mi, 2015-05-27 at 14:46 -0400, Chuck
Crisler wrote:<br>
> Thank you. That leaves me completely
bewildered, which is better than<br>
> pursuing the wrong direction. :-) Back to
my original question, how do I<br>
> use GStreamer to access the cameras on
Android? It seemed that the<br>
> conversation that Tim pointed to only
discussed development strategies. Has<br>
> either been incorporated into the Android
1.4.5 binaries? Or is this an<br>
> 'opportunity' for some development work?
:-)<br>
<br>
</span>I started merging this, just have to find
some time to finish it. It's<br>
mostly boring shuffling around of code, not really
development work.<br>
<br>
Note: the code is there (see links in the bug
report), just has to be<br>
integrated properly and cleaned up a bit<br>
<span class=""><br>
> This is now causing me to wonder about
accessing a camera with GStreamer<br>
> from a Windows tablet. Does that work?<br>
<br>
</span>What Windows tablet, and do you already
have GStreamer running there? ;)<br>
But same answer as what Nicolas replied, appsrc...
or write a proper<br>
source element.<br>
<div class="HOEnZb">
<div class="h5">--<br>
Sebastian Dröge, Centricular Ltd ˇ <a
moz-do-not-send="true"
href="http://www.centricular.com"
target="_blank">http://www.centricular.com</a><br>
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