[Bug 785684] rtspconnection: Add API for sending multiple messages at once, and for having the message body consist of multiple chunks of memory

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=785684

Sebastian Dröge (slomo) <slomo at coaxion.net> changed:

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 Attachment #373906|0                           |1
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--- Comment #36 from Sebastian Dröge (slomo) <slomo at coaxion.net> ---
Created attachment 373938
  --> https://bugzilla.gnome.org/attachment.cgi?id=373938&action=edit
rtsp-connection: Make use of new GstRTSPMessage API for directly storing a body
buffer and add API for writing multiple messages

By doing so we can send a whole GstBufferList and each memory in the
contained buffers without copying into a single memory area and with a
single writev() call. This improves performance considerably for
high-packet-rate streams.

This depends on https://gitlab.gnome.org/GNOME/glib/merge_requests/333
to be efficient, otherwise each chunk of memory is a separate write()
call.

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