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Substantive comments associated with code in Session::plan_master_strategy.
Known not to work for reverse TC. Also, the JACK related code has not yet been tested
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Not all is working right yet, however
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Direct call to Session::cleanup_sources() from ARDOUR_UI::cleanup()
didn't zero initialize size. This centralizes initialization,
so cleanup_trash_sources() does not need to explicitly clear it.
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This also consolidates code to test if a processor can be frozen
from various places.
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DiskReader::{inc,dec}_no_disk_output()
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"ignore/accept commands" concept
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MSVC builds:-
https://www.boost.org/doc/libs/1_65_0/libs/type_traits/doc/html/boost_typetraits/reference/aligned_storage.html
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start_post_processing() may be called from the freewheeling
callback, when starting to normalize.
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This use-case is better served via stem-export.
This export mode never worked correctly when latent plugins
are present on the track. or when realtime export was chosen.
This used to call
track.export_stuff() -> bounce_process()
periodically in small chunks from freewheeling callback,
which is no longer functional.
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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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This is also needed when exporting.
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This allows users to rename sends without enforcing a numeric
bitslot number. However this prevents a user to to use "send" names
that are potentially used for new sends or inserts.
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This is in preparation for GUI sensitivity of Loop and Punch actions.
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This also prevents switching between punch-in/out record
and looping without transport-stop.
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The previous approach failed in case where PluginInsert
uses no-inplace buffers with a linear map.
Since buffers are replicated up to a total of number of
all (inputs + outputs), the number of output buffers
could not be determined. There was insufficient information
using the I/O map alone.
With a known number of outputs processing and applying
the i/o map is also a lot easier and faster.
This break the API of process_map().
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This is in preparation to fix a
"SessionHandleRef exists across session deletion"
error.
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So far only MacOS/X CoreAudio supports this. This is intended
for defualt values in case a user has not callibrated the device, yet.
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"shift" offset
There is still a bug related to "shift" that causes a playback discontinuity
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reversing
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management and motion state (partially) into TFSM
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was done last time we read from disk
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This reverts commit b2bc934e218a8ed05b6f37edc5585191e60ca288.
The commit does causes issues when a user manually removes channels:
The disk-reader's ::can_support_io_configuration() at first ignores
the user's request, forcing the output channel count to match the
DR's current channel config.
However, when configuring the DiskReader after that, channels is updated
to match the new input-count.
Even though the DR itself only plays back using the confgured I/O,
all processors after it still use the old channel count.
Only a later, second re-configuration step will apply the actual removal
to plugins and port.
PS. the original commit was mainly intended to fix a crash when
adding an instrument plugin *between* disk-writer and disk-reader
on a MIDI track.
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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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Input count.
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This fixes a crash: missing playlist due to missing .mid,
and retains regions for missing MIDI files.
As opposed to missing Audio, we cannot use a SilentFileSource,
because MIDI files are destructive.
This also adds an API to query missing files that have been replaced
with silence to report them to the user.
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With 4MB RAM and 1.5MB locked base memory (C++ bindings),
TLSF has a better worst-case performance (-20% std-dev
execution time compared to realloc-pool).
Even though on average Realloc-Pool performs better (-9%
average time, compared to TLSF).
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PluginInsert (and a few other places) iterate over channel
mappings using a const iterator. However mappings()
allocated memory since it was copied
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Expose zita-convolver bindings, to allow for
custom NxM convolution matrices, and dedicated FIR processors.
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This will come in handy for FIR, or short samples in combination
with a Lua convolution processor.
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This is in preparation for saving state while the session is
record-arm'ed. Most notably config changes and undo/redo.
In case both normal and pending save happens, pending must be
last and is required to recover from crashes during recording.
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