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pre-export
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transport work
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This apparently happens on some Windows systems when exporting
a range starting at 00:00:00:00
I'm still hoping there's a better fix for these race-condition
issues, perhaps by kicking the TFSM...
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This picks up where cfd95340b1 left off.
The goal is to ensure that the butler has completed all
PostTransportStop related tasks and won't meddle with transport
after exporting has started.
Previously this could happen, because realtime_stop() queues
PostTransportStop and the butler is sommoned after every
export process cycle.
Since 61e7f3176bf the butler keeps calling non_realtime_stop()
every time it is woken up, until TFSM comes around and unsets the
flag in the process callback.
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This cuts reverb tails and synth sounds after export.
Disabling freewheeling, continues normal processing where
export left off. This previously kept notes ringing, or reverbs
audible.
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The actual issue was introduced in 61e7f3176bfd8e:
Session::non_realtime_stop() no longer unsets PostTransportStop
(other changes from that commit are not relevant).
The real issue however is a race-condition.
So far this only seems to happen on MacOS, Coreaudio.
It seems that non_realtime_stop() is called in the butler-thread
after exporting has started, even though the butler has been
paused in wait_until_finished().
Perhaps Coreaudio thread switches causes TransportFSM to
reinitialize and scheduling the butler?
The use of `usleep()` makes this rather a workaround.
However it's sufficient for the coreaudio rt thread to run
at least once.
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Ardour's playback is aligned to master-out:
"When the playback clock reads 01:00:00:00, the sample corresponding
to 01:00:00:00 is audible at the speaker(s)"
When exporting, and grabbing data from output ports, the signal
is offset by the master-bus physical playback latency. This was
compensated for, but lead to initial silence in the exported file.
New approach is to start capturing export data during pre-roll,
at the time when playback is written to the output buffers.
To also shaves off a common offset to make this work with
realtime export. Effectively this emulates processing with
disconnected master-output port, while still keeping any
latency of effects on the master-bus itself.
Last but not least: jack updates latencies when freewheeling,
(setting HW latency to zero). The callback arrives asynchronously
some time after enabling freewheeling, but after Export
Ports have been configured. Those callbacks are ignored.
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After exporting a time-span, the next time-span was started
directly from the rt-callback. This had various issues.
In particular with realtime export.
Post-processing of a realtime-export enables freewheeling
and is driven by freewheel callbacks. Freewheeling needs to be
safely disabled for an upcoming realtime export.
A similar issues existed when mixing realtime and non-realtime exports.
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management and motion state (partially) into TFSM
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This was a leftover from changes made for Tracks Live, related to
the concept of an auto-return preference. We don't use this anywhere in Ardour
or Mixbus, and the concept should eventually be removed entirely.
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"roll-after-locate"
This allows callers to defer logic about auto-play/current rolling state and more to TransportFSM where it
can be cnentralized and is less ambiguous
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key change: to sync with JACK always locate jack-position PLUS buffer-sized-rounded-worst_latency_preroll() ahead
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available(), connected(), running() were ill-defined and
used interchangeably.
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Delay ports being exported by their playback latency.
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It was not working in sdio/6.0-pre anyway and with upcoming changes to
latency compensation the concept of per disk[stream/reader] will go away.
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* centralize signal_latency_at_***_position to processors
* update initial-delay/roll-delay when processor order changes
* consolidate signal-latency calculation: use the same method
for processor-changes and session's post_playback_latency.
* include relative output-delay in roll-delay
* fix capture processor position & optimize stem-export latency
(roll-delay fixes pending Route:roll() update)
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Generated by tools/f2s. Some hand-editing will be required in a few places to fix up comments related to timecode
and video in order to keep the legible
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Another 90% solution which hopefully gives us another year :(
see comments Session::start_audio_export() for explanation.
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This allows a TmpFile pointer to be either a Sync or Async (Threaded)
writer. As result we must be able to handle both RT and non RT processing.
Still, post-processing (normalization and encoding) should always
happen faster than realtime (freewheeling).
Since jack does not allow a client to change to freewheeling from within
the process-callback, the async-writer disk-thread FileFlushed is used
to initiate post-processing.
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* add a threaded TmpFile Writer
* update API calls to that process_export_fw() can be used as
process_function
The idea is to re-use export infrastructure from normalization:
export to a tmp-file and then encode target formats after that.
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The "Stop" button results in ExportHandlerPtr being destroyed.
This must not happen while it's in use -- in particular during
ExportHandler::start_timespan() and ExportHandler::finish_timespan()
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user pressed stopped (2) captured regions should end where the playhead ends
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This makes the responsibilities and ownership of non-Route related MIDI ports
more clear, and removes a few wierd bits of code. It also ensures that open/close/open
on the same session will retain connections for those MIDI ports
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git-svn-id: svn://localhost/ardour2/branches/3.0@14048 d708f5d6-7413-0410-9779-e7cbd77b26cf
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export which previously would hang when using jack1 because jack_set_freewheel() was called from inside a process() callback; use shared_ptr<Route> in parts of export code that weren't using them before; fix up generation of export filenames so that Glib::build_filename() is used and non-existent folders are ignored
git-svn-id: svn://localhost/ardour2/branches/3.0@13610 d708f5d6-7413-0410-9779-e7cbd77b26cf
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git-svn-id: svn://localhost/ardour2/branches/3.0@13305 d708f5d6-7413-0410-9779-e7cbd77b26cf
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git-svn-id: svn://localhost/ardour2/branches/3.0@13084 d708f5d6-7413-0410-9779-e7cbd77b26cf
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git-svn-id: svn://localhost/ardour2/branches/3.0@12616 d708f5d6-7413-0410-9779-e7cbd77b26cf
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It's slightly possible that this causes trivial build failures on different
configurations, but otherwise shouldn't cause any problems (i.e. no actual
changes other than include/naming/namespace stuff). I deliberately avoided
removing libardour-config.h since this can mysteriously break things, though a
few of those do seem to be unnecessary.
This commit only targets includes of ardour/*.h. There is also a very large
number of unnecessary includes of stuff in gtk2_ardour; tackling that should
also give a big improvement in build time when things are modified.
git-svn-id: svn://localhost/ardour2/branches/3.0@12420 d708f5d6-7413-0410-9779-e7cbd77b26cf
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git-svn-id: svn://localhost/ardour2/branches/3.0@11457 d708f5d6-7413-0410-9779-e7cbd77b26cf
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in a given export format, not a per-export choice. so you need export formats with them set (or not) in order to utilize this choice. the resulting CUE/TOC files have not been checked with a burner (e.g. cdrdao) and testing of them would be appreciated - i (paul) have no CD burner h/w
git-svn-id: svn://localhost/ardour2/branches/3.0@11266 d708f5d6-7413-0410-9779-e7cbd77b26cf
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export of each range, rather than just the first one.
Prevents clashes with both the butler and the export
code doing track refills at the same time (may fix
#4283).
git-svn-id: svn://localhost/ardour2/branches/3.0@10307 d708f5d6-7413-0410-9779-e7cbd77b26cf
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fault :D
git-svn-id: svn://localhost/ardour2/branches/3.0@9654 d708f5d6-7413-0410-9779-e7cbd77b26cf
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git-svn-id: svn://localhost/ardour2/branches/3.0@8166 d708f5d6-7413-0410-9779-e7cbd77b26cf
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git-svn-id: svn://localhost/ardour2/branches/3.0@7314 d708f5d6-7413-0410-9779-e7cbd77b26cf
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git-svn-id: svn://localhost/ardour2/branches/3.0@7038 d708f5d6-7413-0410-9779-e7cbd77b26cf
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