Segment event generation at source plugin (Push mode)

[Tim Müller]

On Wed, 2014-09-10 at 05:53 -0700, AshishS wrote:

Hi,

the reason you might not be getting any response to your questions is
that it's really quite unclear what you are trying to do exactly. If you
tell us a bit more about what kind of element you're writing and what
you are trying to do exactly, people can probably point you in the right
direction. It would also be good to know which GStreamer version you're
using.

It is quite unlikely that you will need to use new_seamless_segment()
unless you're writing a DVD source or similar.

Cheers
 -Tim

> 
> I am using below
> 
> =======
> /**
>  * gst_base_src_new_seamless_segment:
>  * @src: The source
>  * @start: The new start value for the segment
>  * @stop: Stop value for the new segment
>  * @position: The position value for the new segent
>  *
>  * Prepare a new seamless segment for emission downstream. This function
> must
>  * only be called by derived sub-classes, and only from the create()
> function,
>  * as the stream-lock needs to be held.
>  *
>  * The format for the new segment will be the current format of the source,
> as
>  * configured with gst_base_src_set_format()
>  *
>  * Returns: %TRUE if preparation of the seamless segment succeeded.
>  *
>  * Since: 0.10.26
>  */
> gboolean
> gst_base_src_new_seamless_segment (GstBaseSrc * src, gint64 start, gint64
> stop,
>     gint64 position)
> ======
> 
> I am calling this from create function in my source plugin,
> 
> when i call as below first time:-
> ===
> basesrc->segment.rate = 2.0;
> ret = gst_base_src_new_seamless_segment(basesrc, 0, stopPos : -1, currPos)
> ===
> Media play immediately with 2x speed, now when I want to reset to 1.0 rate,
> i do below
> ===
> basesrc->segment.rate = 1.0;
> ret = gst_base_src_new_seamless_segment(basesrc, 0, stopPos : -1, currPos)
> ===
> This time play hang's around for  5min, then starts playing at 1x speed.
> 
> Why play hangs, what is going wrong here please let me know? except the
> comment for the function in "gstbasesrc.c" i did not found any much
> information how it works.
> 
> Please let me know the correct behavior and some knowledge sharing on the
> same
> 
> Thanks
> Ashish S
> 
> 
> 
> --
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-- 
Tim Müller, Centricular Ltd - http://www.centricular.com