Age | Commit message (Collapse) | Author |
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There is no actual use-case to set it to anything else than 100.
timecode subframes are only used for ruler marks and the snap to grid.
libtimecode is still /aware/ of the subframe setting.
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Many related changes that require atomic update, mostly
because ClockOption slots changed:
* change offset config format to std:string (backwards compat - reads 0)
* make Timecode offset independent from fps
* sample_to_timecode() handle negative sample-num
* audio-clock fix entry and edit of negative numbers
* option editor:
- remove old global internal offset
- add slave & generator TC entry
- still needs UI cleanup, tooltops, maybe sep. tab..
* LTC & MTC slave& generator:
- cache offset
- subscribe to parameter changes
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So far only LTC slave, LTC generator and MTC slave.
MTC generator remains to be done.
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also unify labels for 29..97XX and simplify fps display.
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Close loop of quarter-frame DLL and
also re-enable the deadzone around speed 1.0.
DLL bandwidth have been slightly adjusted empirically.
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Do not re-position transport before first full frame has arrived.
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wrong threshold causes jumps.
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trade-off constant re-sampling to achieve sample-delta ~0,
with trying to avoid resampling if the delta is within
1% of the sample-rate.
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impl MClk slave, update format for LTC, MTC
negative delta: Ardour is behind,
positive delta: Ardour is ahead of ext clock.
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MIDI only specifies the frame-count, not the rate.
in the vast majority of cases MIDI's
"Count to 30 use drop-frame" is 29.97df fps.
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allow external timecode device to supply timecode with
framerates other than ardour session's framerate.
also fix latency overcompensation. The slave is supposed to
provide transport time - and not audible frame time.
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provide a way to convert any TimecodeFormat to float frame-rate,
not only the currently active timecode_foramt.
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when a timecode slave (MTC, LTC) has a different frame rate than an Ardour session
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- MTC-speed average (MIDI thread)
* base timing on quarter-frames
* replace hann-window average with a DLL
- MTC/engine alignment
* replace 1st order PI-controller with 2nd order DLL
The 2nd DLL is needed because the jack-process callback effectively
quantizes the transport-speed to integer audio-frames (speed * nframes).
This leaves a delta on every cycle because the remainder from previous
cycles is not compensated for.
Theoretically it is possible to merge the two DLLs into one.
However, with callbacks coming from by two independent threads
it is cleaner to track the MTC and JACK engine-alignment speeds
independently.
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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.
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fault :D
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worst_playback_latency() just about everywhere we were using worst_output_latency() - the former includes plugin latency. answer appears to break earlier fixes to alignment, but is semantically right, so plan to investigate in another 8 hours or so
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for cc and c++ builds, remove them from source (2) add new Property::midi_data used by MidiRegion to signal that its (MIDI) contents have changed (3) massive switch from nframes_t to framepos_t/framecnt_t including removal of ARDOUR::max_frames (replaced by ARDOUR::max_frame{pos,cnt} (lots more to do but this set was driven by changes to the Diskstream API to use framepos_t
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get a name; make StatefulDiffCommand use a weak_ptr, not a raw ptr; use .val() rather than .get() to avoid confusion with boost:: smart ptr method of the same name
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