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This is done by way of a generic Worker object/thread, which currently just
applies to one LV2 plugin, but the idea is to share one thread and set of
buffers among many plugins. The same pattern may also be useful elsewhere in
Ardour. The responding part gets a bit tricker when sharing a worker between
plugins, it's not a blocker, and I'm lazy, sooo here's this.
This commit also adds a new portable in-process semaphore to PBD. The existing
one is pretty weird and uses a named semaphore on OSX for reasons unknown to
me. Perhaps as a quick fix to avoid POSIX semaphores being utterly broken on
OSX? It would probably be a good idea to replace that with this new one, which
uses Mach kernel semaphores on OSX which work well, though I am not sure how
pedantically real-time safe they are to signal.
git-svn-id: svn://localhost/ardour2/branches/3.0@11790 d708f5d6-7413-0410-9779-e7cbd77b26cf
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Implement proper support for fixed size LV2 plugin UIs.
git-svn-id: svn://localhost/ardour2/branches/3.0@11757 d708f5d6-7413-0410-9779-e7cbd77b26cf
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git-svn-id: svn://localhost/ardour2/branches/3.0@11548 d708f5d6-7413-0410-9779-e7cbd77b26cf
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This saves a complete history of plugin state, i.e. save is no longer destructive. However, data is shared as much as possible, and new state is only written if the plugin state has actually changed. There is exactly one link in the entire session directory to any external file, so archiving will work with minimal copying.
Not sure sure about the naming of the "externals" directory, but I have nothing better...
git-svn-id: svn://localhost/ardour2/branches/3.0@11372 d708f5d6-7413-0410-9779-e7cbd77b26cf
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Corresponding patch to LinuxSampler available here: http://drobilla.net/files/linuxsampler_lv2_state_0_4.diff
git-svn-id: svn://localhost/ardour2/branches/3.0@10788 d708f5d6-7413-0410-9779-e7cbd77b26cf
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LV2 uri-unmap extension.
git-svn-id: svn://localhost/ardour2/branches/3.0@10723 d708f5d6-7413-0410-9779-e7cbd77b26cf
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This has a few benefits:
* As system installed extensions become more ubiquitous, we can optionally
build against those rather than including them in the source tree,
without any source changes
* No need to hack extension headers to change the include paths to match
our specific scheme (i.e. headers are precisely those from the extension,
even if they include other extension headers)
* Consistency, lack of ambiguity, easy code sharing, blah blah, etc.
git-svn-id: svn://localhost/ardour2/branches/3.0@10476 d708f5d6-7413-0410-9779-e7cbd77b26cf
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