[Bug 691299] API: GstFileMemAllocator - an allocator that uses disk storage to provide memory space

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=691299
  GStreamer | gstreamer (core) | git

Wim Taymans <wim.taymans> changed:

           What    |Removed                     |Added
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                 CC|                            |wim.taymans at gmail.com

--- Comment #5 from Wim Taymans <wim.taymans at gmail.com> 2013-07-17 10:30:43 UTC ---
There are 2 interesting ways to use this:

 1) as a replacement for the system memory allocator.

 2) as an allocator proposed in allocation queries.

I can see two separate APIs for this:

 1) needs something like 

      alloc = gst_filemem_allocator_new(gsize size, const gchar *templ);

    and then 

      gst_allocator_set_default (alloc);

    You could also have elements do that and propose the allocator but I can't
    see why they would right now.

 2) needs something like:

     alloc = gst_filemem_allocator_new_from_fd (gint fd, ...);

    Because if you are to propose this in an allocator you probably have your
    own fd somewhere that you want others to write into. I can only think of
    a ringbuffer or maybe a muxer.

Maybe you also want to make it possible to grow the file automatically or never
overwrite things (in the case of a muxer).

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