1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
|
/**********************************************************************
Audacity: A Digital Audio Editor
Effect.cpp
Dominic Mazzoni
**********************************************************************/
#include <wx/string.h>
#include <wx/progdlg.h>
#include <wx/timer.h>
#include "Effect.h"
#include "../WaveTrack.h"
//
// public static methods
//
EffectArray *Effect::mEffects = new EffectArray();
int Effect::RegisterEffect(Effect * f)
{
mEffects->Add(f);
return mEffects->Count();
}
int Effect::GetNumEffects()
{
return mEffects->Count();
}
Effect *Effect::GetEffect(int i)
{
return (*mEffects)[i];
}
//
// public methods
//
Effect::Effect()
{
mWaveTracks = NULL;
mProgress = NULL;
}
bool Effect::DoEffect(wxWindow *parent, TrackList *list, double t0, double t1)
{
wxASSERT(t0 <= t1);
if (mWaveTracks) {
delete mWaveTracks;
mWaveTracks = NULL;
}
mParent = parent;
mTracks = list;
mT0 = t0;
mT1 = t1;
CountWaveTracks();
if (!Init())
return false;
if (!PromptUser())
return false;
wxBusyCursor busy;
wxYield();
wxStartTimer();
bool returnVal = Process();
End();
if (mProgress) {
delete mProgress;
mProgress = NULL;
}
delete mWaveTracks;
mWaveTracks = NULL;
return returnVal;
}
void Effect::GetSamples(WaveTrack *t, sampleCount *s0, sampleCount *slen)
{
wxASSERT(s0);
wxASSERT(slen);
int ss0 = (int) ((mT0 - t->tOffset) * t->rate);
int ss1 = (int) ((mT1 - t->tOffset) * t->rate);
if (ss0 < 0)
ss0 = 0;
if (ss1 >= t->numSamples)
ss1 = t->numSamples;
if (ss1 < ss0)
ss1 = ss0;
*s0 = (sampleCount)ss0;
*slen = (sampleCount)(ss1 - ss0);
}
bool Effect::TotalProgress(double frac)
{
if (!mProgress && wxGetElapsedTime(false) > 500) {
mProgress =
new wxProgressDialog(GetEffectName(),
GetEffectAction(),
1000,
mParent,
wxPD_CAN_ABORT |
wxPD_REMAINING_TIME | wxPD_AUTO_HIDE);
}
bool cancelling = false;
if (mProgress) {
cancelling =
!mProgress->Update((int)(frac*1000 + 0.5));
}
return cancelling;
}
bool Effect::TrackProgress(int whichTrack, double frac)
{
return TotalProgress((whichTrack+frac)/mNumTracks);
}
bool Effect::TrackGroupProgress(int whichGroup, double frac)
{
return TotalProgress((whichGroup+frac)/mNumGroups);
}
void Effect::CountWaveTracks()
{
mNumTracks = 0;
mNumGroups = 0;
mWaveTracks = new TrackList();
TrackListIterator iter(mTracks);
VTrack *t = iter.First();
while(t) {
if (!t->selected) {
t = iter.Next();
continue;
}
if (t->GetKind() == VTrack::Wave) {
mWaveTracks->Add(t);
mNumTracks++;
if (!t->linked)
mNumGroups++;
}
t = iter.Next();
}
}
float TrapFloat(float x, float min, float max)
{
if (x <= min)
return min;
else if (x >= max)
return max;
else
return x;
}
double TrapDouble(double x, double min, double max)
{
if (x <= min)
return min;
else if (x >= max)
return max;
else
return x;
}
long TrapLong(long x, long min, long max)
{
if (x <= min)
return min;
else if (x >= max)
return max;
else
return x;
}
|
