[Bug 719615] oggdemux: slow seeking on some ogg files

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=719615
  GStreamer | gst-plugins-base | git

--- Comment #13 from Vincent Penquerc'h <vincent.penquerch at collabora.co.uk> 2014-01-13 15:21:09 UTC ---
Created an attachment (id=266169)
 View: https://bugzilla.gnome.org/attachment.cgi?id=266169
 Review: https://bugzilla.gnome.org/review?bug=719615&attachment=266169

adaptive chunk size

The issue seems due to the use of too small a chunk size when dealing with
large pages (the file in the report uses ~64 KB pages, which is about the
maximum Ogg can have).

Can you try the patch attached, and see if that fixes your issues ? 

There's probably something else to find and fix, since this chunk size has been
there forever, so if there was an actual regression, it likely is still there.
But I'm curious to see how much of an effect this patches does. Testing here, I
get about 40% as much calls to the checksum as before for this test file.

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