/*
- Copyright (C) 2004 Paul Davis
+ Copyright (C) 2004 Paul Davis
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
+#include <cmath>
-#include <pbd/basename.h>
+#include "pbd/basename.h"
-#include <ardour/types.h>
-#include <ardour/quantize.h>
-#include <ardour/session.h>
-#include <ardour/smf_source.h>
-#include <ardour/midi_region.h>
-#include <ardour/tempo.h>
+#include "ardour/quantize.h"
+#include "ardour/midi_model.h"
#include "i18n.h"
using namespace std;
+using namespace PBD;
using namespace ARDOUR;
-
-/** Quantize notes, valid for MIDI regions only.
+/** Quantize notes
*
- * Q is the quantize value in beats, ie 1.0 = quantize to beats,
+ * grid parameters are the quantize value in beats, ie 1.0 = quantize to beats,
* 0.25 = quantize to beats/4, etc.
*/
-Quantize::Quantize (Session& s, double q)
- : Filter (s)
- , _q(q)
+
+Quantize::Quantize (bool snap_start, bool snap_end,
+ double start_grid, double end_grid,
+ float strength, float swing, float threshold)
+ : _snap_start (snap_start)
+ , _snap_end (snap_end)
+ , _start_grid(start_grid)
+ , _end_grid(end_grid)
+ , _strength (strength/100.0)
+ , _swing (swing/100.0)
+ , _threshold (threshold)
{
}
{
}
-int
-Quantize::run (boost::shared_ptr<Region> r)
+Command*
+Quantize::operator () (boost::shared_ptr<MidiModel> model,
+ Evoral::MusicalTime position,
+ std::vector<Evoral::Sequence<Evoral::MusicalTime>::Notes>& seqs)
{
- boost::shared_ptr<MidiRegion> region = boost::dynamic_pointer_cast<MidiRegion>(r);
- if (!region)
- return -1;
-
- // FIXME: how to make a whole file region if it isn't?
- //assert(region->whole_file());
-
- boost::shared_ptr<MidiSource> src = region->midi_source(0);
- src->load_model();
-
- boost::shared_ptr<MidiModel> model = src->model();
-
- // FIXME: Model really needs to be switched to beat time (double) ASAP
-
- const Tempo& t = session.tempo_map().tempo_at(r->start());
- const Meter& m = session.tempo_map().meter_at(r->start());
-
- double q_frames = _q * (m.frames_per_bar(t, session.frame_rate()) / (double)m.beats_per_bar());
-
- for (MidiModel::Notes::iterator i = model->notes().begin(); i != model->notes().end(); ++i) {
- const double new_time = lrint((*i)->time() / q_frames) * q_frames;
- double new_dur = lrint((*i)->duration() / q_frames) * q_frames;
- if (new_dur == 0.0)
- new_dur = q_frames;
-
- (*i)->set_time(new_time);
- (*i)->set_duration(new_dur);
- }
+ /* TODO: Rewrite this to be precise with fixed point? */
+
+ /* Calculate offset from start of model to next closest quantize step,
+ to quantize relative to actual session beats (etc.) rather than from the
+ start of the model.
+ */
+ const double round_pos = round(position.to_double() / _start_grid) * _start_grid;
+ const double offset = round_pos - position.to_double();
+
+ bool even;
+ MidiModel::NoteDiffCommand* cmd = new MidiModel::NoteDiffCommand (model, "quantize");
+
+ for (std::vector<Evoral::Sequence<Evoral::MusicalTime>::Notes>::iterator s = seqs.begin(); s != seqs.end(); ++s) {
+
+ even = false;
+
+ /* TODO 'swing' probably requires a 2nd iteration:
+ * first quantize notes to the grid, then apply beat shift
+ */
+ for (Evoral::Sequence<MidiModel::TimeType>::Notes::iterator i = (*s).begin(); i != (*s).end(); ++i) {
+
+ double new_start = round (((*i)->time().to_double() - offset) / _start_grid) * _start_grid + offset;
+ double new_end = round (((*i)->end_time().to_double() - offset) / _end_grid) * _end_grid + offset;
+
+ if (_swing > 0.0 && !even) {
+
+ double next_grid = new_start + _start_grid;
+
+ /* find a spot 2/3 (* swing factor) of the way between the grid point
+ we would put this note at, and the nominal position of the next note.
+ */
+
+ new_start = new_start + (2.0/3.0 * _swing * (next_grid - new_start));
+ new_end = new_end + (2.0/3.0 * _swing * (next_grid - new_start));
- model->set_edited(true);
+ } else if (_swing < 0.0 && !even) {
+
+ double prev_grid = new_start - _start_grid;
+
+ /* find a spot 2/3 (* swing factor) of the way between the grid point
+ we would put this note at, and the nominal position of the previous note.
+ */
+
+ new_start = new_start - (2.0/3.0 * _swing * (new_start - prev_grid));
+ new_end = new_end - (2.0/3.0 * _swing * (new_start - prev_grid));
+
+ }
+
+ double delta = new_start - (*i)->time().to_double();
+
+ if (fabs (delta) >= _threshold) {
+ if (_snap_start) {
+ delta *= _strength;
+ cmd->change ((*i), MidiModel::NoteDiffCommand::StartTime,
+ (*i)->time() + delta);
+ }
+ }
+
+ if (_snap_end) {
+ delta = new_end - (*i)->end_time().to_double();
+
+ if (fabs (delta) >= _threshold) {
+ Evoral::MusicalTime new_dur(new_end - new_start);
+
+ if (!new_dur) {
+ new_dur = Evoral::MusicalTime(_end_grid);
+ }
+
+ cmd->change ((*i), MidiModel::NoteDiffCommand::Length, new_dur);
+ }
+ }
+
+ even = !even;
+ }
+ }
- return 0;
+ return cmd;
}
projects / ardour.git / blobdiff