2 Copyright (C) 2004 Paul Davis
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21 #include "pbd/basename.h"
23 #include "ardour/types.h"
24 #include "ardour/quantize.h"
25 #include "ardour/session.h"
26 #include "ardour/smf_source.h"
27 #include "ardour/midi_model.h"
28 #include "ardour/midi_region.h"
29 #include "ardour/tempo.h"
35 using namespace ARDOUR
;
39 * grid parameters are the quantize value in beats, ie 1.0 = quantize to beats,
40 * 0.25 = quantize to beats/4, etc.
43 Quantize::Quantize (Session
& s
, QuantizeType
/* type */,
44 bool snap_start
, bool snap_end
,
45 double start_grid
, double end_grid
,
46 float strength
, float swing
, float threshold
)
48 , _snap_start (snap_start
)
49 , _snap_end (snap_end
)
50 , _start_grid(start_grid
)
52 , _strength (strength
/100.0)
53 , _swing (swing
/100.0)
54 , _threshold (threshold
)
58 Quantize::~Quantize ()
63 Quantize::operator () (boost::shared_ptr
<MidiModel
> model
,
65 std::vector
<Evoral::Sequence
<Evoral::MusicalTime
>::Notes
>& seqs
)
67 /* Calculate offset from start of model to next closest quantize step,
68 to quantize relative to actual session beats (etc.) rather than from the
71 const double round_pos
= ceil(position
/ _start_grid
) * _start_grid
;
72 const double offset
= round_pos
- position
;
75 MidiModel::NoteDiffCommand
* cmd
= new MidiModel::NoteDiffCommand (model
, "quantize");
77 for (std::vector
<Evoral::Sequence
<Evoral::MusicalTime
>::Notes
>::iterator s
= seqs
.begin(); s
!= seqs
.end(); ++s
) {
81 for (Evoral::Sequence
<MidiModel::TimeType
>::Notes::iterator i
= (*s
).begin(); i
!= (*s
).end(); ++i
) {
83 double new_start
= round ((*i
)->time() / _start_grid
) * _start_grid
+ offset
;
84 double new_end
= round ((*i
)->end_time() / _end_grid
) * _end_grid
+ offset
;
86 if (_swing
> 0.0 && !even
) {
88 double next_grid
= new_start
+ _start_grid
;
90 /* find a spot 2/3 (* swing factor) of the way between the grid point
91 we would put this note at, and the nominal position of the next note.
94 new_start
= new_start
+ (2.0/3.0 * _swing
* (next_grid
- new_start
));
96 } else if (_swing
< 0.0 && !even
) {
98 double prev_grid
= new_start
- _start_grid
;
100 /* find a spot 2/3 (* swing factor) of the way between the grid point
101 we would put this note at, and the nominal position of the previous note.
104 new_start
= new_start
- (2.0/3.0 * _swing
* (new_start
- prev_grid
));
108 double delta
= new_start
- (*i
)->time();
110 if (fabs (delta
) >= _threshold
) {
113 cmd
->change ((*i
), MidiModel::NoteDiffCommand::StartTime
,
114 (*i
)->time() + delta
);
119 delta
= new_end
- (*i
)->end_time();
121 if (fabs (delta
) >= _threshold
) {
122 double new_dur
= new_end
- new_start
;
124 if (new_dur
== 0.0) {
128 cmd
->change ((*i
), MidiModel::NoteDiffCommand::Length
, new_dur
);