which docs is valid?

[Farkas Levente]

hi,
there're two docs about appsink:
http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gst-plugins-base-libs/html/gst-plugins-base-libs-appsink.html#GstAppSinkCallbacks
http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gst-plugins-base-plugins/html/gst-plugins-base-plugins-appsink.html#GstAppSink-new-buffer
the first one said the "new-buffer" return void while the second
GstFlowReturn.
which one is the right?
the same question true for many other signal in appsink and appsrc.
thanks.

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  Levente                               "Si vis pacem para bellum!"
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[Tim-Philipp Müller-2]

On Fri, 2011-09-16 at 19:45 +0200, Farkas Levente wrote:

> there're two docs about appsink:
> http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gst-plugins-base-libs/html/gst-plugins-base-libs-appsink.html#GstAppSinkCallbacks
> http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gst-plugins-base-plugins/html/gst-plugins-base-plugins-appsink.html#GstAppSink-new-buffer
> the first one said the "new-buffer" return void while the second
> GstFlowReturn.
> which one is the right?
> the same question true for many other signal in appsink and appsrc.

Both are right. One doc is about GObject signals and their callback
functions, the other is about explicitly-installed callbacks which are
named the same, but invoked directly and not via the GObject signal
emission mechanism.

Cheers
 -Tim

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[Farkas Levente]

On 09/16/2011 07:54 PM, Tim-Philipp Müller wrote:

> On Fri, 2011-09-16 at 19:45 +0200, Farkas Levente wrote:
>
>> there're two docs about appsink:
>> http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gst-plugins-base-libs/html/gst-plugins-base-libs-appsink.html#GstAppSinkCallbacks
>> http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gst-plugins-base-plugins/html/gst-plugins-base-plugins-appsink.html#GstAppSink-new-buffer
>> the first one said the "new-buffer" return void while the second
>> GstFlowReturn.
>> which one is the right?
>> the same question true for many other signal in appsink and appsrc.
>
> Both are right. One doc is about GObject signals and their callback
> functions, the other is about explicitly-installed callbacks which are
> named the same, but invoked directly and not via the GObject signal
> emission mechanism.

ok so which one should have to used by appsink users?

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[Tim-Philipp Müller-2]

On Fri, 2011-09-16 at 20:12 +0200, Farkas Levente wrote:

> ok so which one should have to used by appsink users?

You can use whichever you prefer (if you're using C, anyway).

The direct callbacks have less overhead of course.

 -Tim


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