[Bug 749653] dashdemux: Implement binary search for stream_sidx_seek

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=749653

--- Comment #11 from Reynaldo H. Verdejo Pinochet <reynaldo at opendot.cl> ---
Comment on attachment 303756
  --> https://bugzilla.gnome.org/attachment.cgi?id=303756
replace binary search to optimize in stream_sidx_seek.


> 
>+static gint
>+gst_dash_demux_index_entry_search (GstSidxBoxEntry * entry, GstClockTime * ts,
>+    gpointer user_data)
>+{
>+  if (entry->pts + entry->duration < *ts)
>+    return -1;
>+  else if (entry->pts + entry->duration > *ts)
>+    return 1;
>+  else
>+    return 0;
>+}

It might make sense to avoid computing entry->pts + entry->duration
twice.

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