Rater than having each Delivery Object provide a Ringbuffer,
which is unused most of the time, the GUI will provide
them on demand.
We need to be careful of lifetime, and use `rt_safe_delete` in
case the Delivery holds the last instance.
Depending on fftw version, compile-flags and availability of
`fftwf_make_planner_thread_safe` fftw_plan_* may not be
called concurrently (fftw internally uses a static cache).
GTK+ 2.x only looked up action *names* and ignored the namespacing offered by
action groups. This means that if there are two actions in different groups
with the same name, GtkUIManager may not find the one intended when it is
referenced in a menus definition file.
This commit changes that - if the action name contains a '/' character it is
assumed to contain both the action group name and the action name, and it will
only look for the action within the named group.
Notably during realtime export an explicit flush of async
MIDI ports will duplicate port buffer content.
AsyncMIDIPort::cycle_end () calls `flush_output_fifo`,
and `flush_buffers` is called from PortManager::cycle_end.
_gdk_window_process_updates_recurse() may recurse (duh),
and reenter drawRect. So `needs_display_region` needs
to be unset immediately, not at the end of the method.
We used to strip the group name from an action name, then prepend the
Bindings object name.
Now we simply prepend the Bindings object name.
So if the named action was Zoom/temporal-zoom-in it becomes, for example,
MidiCueEditorZoom/temporal-zoom-in
This copies all the binding information for an existing Bindings object,
but then mutates all the action names from foo/bar to name/bar where name
is the given name for the new Bindings object.
Introduce optimized NEON implementations for audio peak detection,
buffer mixing, scaling, and copy functions on AArch64.
For benchmark results, see ardour-neon-functions [1].
Provide a dedicated `aarch64_neon_functions.cc` for Aarch64 target.
provide backwards compatibility with armhf targets with
`arm_neon_fuctions.cc`.
[1] https://github.com/ashafq/ardour-neon-functions
