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
196
|
/*
Copyright (C) 2003 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
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
$Id$
*/
#include <cerrno>
#include <stdexcept>
#include <pbd/basename.h>
#include <soundtouch/SoundTouch.h>
#include <ardour/session.h>
#include <ardour/audioregion.h>
#include <ardour/sndfilesource.h>
#include <ardour/region_factory.h>
#include <ardour/source_factory.h>
#include "i18n.h"
using namespace std;
using namespace ARDOUR;
using namespace PBD;
using namespace soundtouch;
boost::shared_ptr<AudioRegion>
Session::tempoize_region (TimeStretchRequest& tsr)
{
SourceList sources;
SourceList::iterator it;
boost::shared_ptr<AudioRegion> r;
SoundTouch st;
string region_name;
string ident = X_("-TIMEFX-");
float percentage;
jack_nframes_t total_frames;
jack_nframes_t done;
/* the soundtouch code wants a *tempo* change percentage, which is
of opposite sign to the length change.
*/
percentage = -tsr.fraction;
st.setSampleRate (frame_rate());
st.setChannels (1);
st.setTempoChange (percentage);
st.setPitchSemiTones (0);
st.setRateChange (0);
st.setSetting(SETTING_USE_QUICKSEEK, tsr.quick_seek);
st.setSetting(SETTING_USE_AA_FILTER, tsr.antialias);
vector<string> names = tsr.region->master_source_names();
tsr.progress = 0.0f;
total_frames = tsr.region->length() * tsr.region->n_channels();
done = 0;
for (uint32_t i = 0; i < tsr.region->n_channels(); ++i) {
string path = path_from_region_name (PBD::basename_nosuffix (names[i]), ident);
if (path.length() == 0) {
error << string_compose (_("tempoize: error creating name for new audio file based on %1"), tsr.region->name())
<< endmsg;
goto out;
}
try {
sources.push_back (boost::dynamic_pointer_cast<AudioFileSource> (SourceFactory::createWritable (DataType::AUDIO, *this, path, false, frame_rate())));
} catch (failed_constructor& err) {
error << string_compose (_("tempoize: error creating new audio file %1 (%2)"), path, strerror (errno)) << endmsg;
goto out;
}
}
try {
const jack_nframes_t bufsize = 16384;
for (uint32_t i = 0; i < sources.size(); ++i) {
gain_t gain_buffer[bufsize];
Sample buffer[bufsize];
jack_nframes_t pos = 0;
jack_nframes_t this_read = 0;
boost::shared_ptr<AudioSource> asrc = boost::dynamic_pointer_cast<AudioSource>(sources[i]);
if (!asrc) {
cerr << "FIXME: TimeFX for non-audio" << endl;
continue;
}
st.clear();
while (tsr.running && pos < tsr.region->length()) {
jack_nframes_t this_time;
this_time = min (bufsize, tsr.region->length() - pos);
/* read from the master (original) sources for the region,
not the ones currently in use, in case it's already been
subject to timefx. */
if ((this_read = tsr.region->master_read_at (buffer, buffer, gain_buffer, pos + tsr.region->position(), this_time)) != this_time) {
error << string_compose (_("tempoize: error reading data from %1"), sources[i]->name()) << endmsg;
goto out;
}
pos += this_read;
done += this_read;
tsr.progress = (float) done / total_frames;
st.putSamples (buffer, this_read);
while ((this_read = st.receiveSamples (buffer, bufsize)) > 0 && tsr.running) {
if (asrc->write (buffer, this_read) != this_read) {
error << string_compose (_("error writing tempo-adjusted data to %1"), sources[i]->name()) << endmsg;
goto out;
}
}
}
if (tsr.running) {
st.flush ();
}
while (tsr.running && (this_read = st.receiveSamples (buffer, bufsize)) > 0) {
if (asrc->write (buffer, this_read) != this_read) {
error << string_compose (_("error writing tempo-adjusted data to %1"), sources[i]->name()) << endmsg;
goto out;
}
}
}
} catch (runtime_error& err) {
error << _("timefx code failure. please notify ardour-developers.") << endmsg;
error << err.what() << endmsg;
goto out;
}
time_t now;
struct tm* xnow;
time (&now);
xnow = localtime (&now);
for (it = sources.begin(); it != sources.end(); ++it) {
boost::shared_ptr<AudioFileSource> afs = boost::dynamic_pointer_cast<AudioFileSource>(*it);
if (afs) {
afs->update_header (tsr.region->position(), *xnow, now);
}
}
region_name = tsr.region->name() + X_(".t");
r = (boost::dynamic_pointer_cast<AudioRegion> (RegionFactory::create (sources, 0, sources.front()->length(), region_name,
0, AudioRegion::Flag (AudioRegion::DefaultFlags | AudioRegion::WholeFile))));
out:
if (sources.size()) {
/* if we failed to complete for any reason, mark the new file
for deletion.
*/
if ((!r || !tsr.running)) {
for (it = sources.begin(); it != sources.end(); ++it) {
(*it)->mark_for_remove ();
}
}
sources.clear ();
}
/* if the process was cancelled, delete the region */
if (!tsr.running) {
r.reset ();
}
return r;
}
|
