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This is done in order to set the TransportGenerator flag
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Generator ports (like TransportMaster slaves), should not be
re-sampled when vari-speeding. Instead the Timecode/Clock should
directly use the engine-speed.
For this to happen, they need to be special-cased: no re-sampler
latency, direct access to engine-buffers.
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This went away when we added RTMidiBuffer. Getting data from MIDI playlists is now
completed in one pass, without note trackers
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We need a MidiStateTracker to determine notes whose end is not reached
during the call to ::write_one_track(), so that we can resolve them
in the output (SMF) source. This required some changes to the ::export_stuff()
API for tracks.
In addition, we now take the source "lock" just once during ::write_one_track()
rather than every time we write. This isn't an integral part of the
note tracking, but fell out along the way.
Finally, note that although we use a vector to handle MIDI "sources" here,
it is expected that there is only 1 MIDI source at present. Leave vectors in
place since it is possible that ::write_one_track() could be modified
in the future to change that.
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Previously use-monitor-fades was unused in A6, and transition
between monitoring states used the use-transport-fades preference.
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This was just a proxy for libs/evoral/evoral/Event.h. Note that the #define
that controlled allocation that was at the top of the removed header is
replicated in the Evoral header, so there are no semantic changes
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that MTC events "occured at"
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Port and connection changes always imply a latency_callback from
the engine. Worst I/O latency is updated directly in
Session::update_latency() which is called from
AudioEngine::latency_callback.
Explicit subscriptions to route->output()->changed() is not needed
to update the worst I/O latency.
Only set_block_size() needs to to update the I/O latency when
the buffer-size changes.
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-DLatency now triggers all four:
* LatencyCompensation (entry-points, overall flow)
* LatencyIO (Port/IO query, set/get private/public)
* LatencyDelayLine (Delaylines for internal sends and alignment)
* LatencyRoute (route processor latency)
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This allows to also catch cases when a panner-ui directly changes
set_linked_to_route() of the panner shell.
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left in place
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The Auditioner is not part of the session route-list and the
auditioner route's I/O latency is never updated.
Session::process_audition() does not handle pre-roll either,
so it need to be zeroed, otherwise Route::roll skips samples.
This has lead to initial samples being skipped, IFF the
auditioner's output-port had non-zero latency.
Since private port-latencies are usually only set for routes
in the route-list, and _remaining_latency_preroll is reset
at transport-stop, this *usually* worked...
Last but not least, MIDI notes need to be resolved when seeking.
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IO::latency iterates over the port-set retrieving the
private_latency_range of each port. Since it can only change
when connections and latency changes, we can instead cache the value.
This is also in preparation to allow the auditioner to override it.
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xmlParseMemory() uses a c-pointer char*.
Previously MIDNAM data on the heap were wrapped inside
a std::string only to be later accessed via c_str().
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Since 57118c2370fa, plugins are re-activated after every export.
So a silent pre no-roll is mainly useful for with realtime export,
and for some cases where a plugin does not correctly reset.
Note that for the first export, plugins are not currently flushed.
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LV2 uses "enabled": -1: inactive, 0: bypassed, 1:enabled
VST3 has "bypass: 0:active, 1: bypassed
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The disk-reader assumes that all playback ringbuffers are in sync
and have the same fill_level.
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Since ead883302fe800ae, it is no longer possible to use a null
pointer SessionEvent::track as flag to indicate overriding all
buffers.
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This reverts commit a13ef36b3b6212d1ae0c563c7a60a86152dbb48f.
A better fix is coming.
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A port can callback from its destructor, which if occuring inside the backend destructor
would reach an already partially destructed backend.
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Port (or Tracks) can be safely added during playback, however
the disk-reader's playback buffer is initially empty. This lead to
false-positive Underrun() signals when processing takes place
before or concurrently with re-filling the disk-buffer for the new
channels.
Now new empty buffers are ignored, and produce silence until the
initial refill is complete. There is however no per-channel
de-click in, yet.
This fixes: play some audio track, ctrl+drag a region to the
drop-zone, creating a new track while playing.
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JACK is not yet finished.
Changes also include minor reformatting and a spelling correction (latecies to latencies)
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Auto-connect is handled in a background thread, so newly created
tracks are not immediately connected.
This causes a race-condition when fan-out directly disconnects
and re-connects ports after track/bus creation.
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