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
|
/*
Copyright (C) 2000 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.
$Id$
*/
#ifndef __ardour_source_h__
#define __ardour_source_h__
#include <list>
#include <vector>
#include <string>
#include <time.h>
#include <sigc++/signal.h>
#include <ardour/ardour.h>
#include <ardour/stateful.h>
#include <pbd/xml++.h>
using std::list;
using std::vector;
using std::string;
namespace ARDOUR {
struct PeakData {
typedef Sample PeakDatum;
PeakDatum min;
PeakDatum max;
};
const jack_nframes_t frames_per_peak = 256;
class Source : public Stateful, public sigc::trackable
{
public:
Source (bool announce=true);
Source (const XMLNode&);
virtual ~Source ();
const string& name() const { return _name; }
ARDOUR::id_t id() const { return _id; }
/* returns the number of items in this `source' */
virtual jack_nframes_t length() const {
return _length;
}
virtual jack_nframes_t available_peaks (double zoom) const;
virtual jack_nframes_t read (Sample *dst, jack_nframes_t start, jack_nframes_t cnt, char * workbuf) const {
return 0;
}
virtual jack_nframes_t write (Sample *src, jack_nframes_t cnt, char * workbuf) {
return 0;
}
virtual float sample_rate () const { return 0; }
uint32_t use_cnt() const { return _use_cnt; }
void use ();
void release ();
virtual void mark_for_remove() = 0;
virtual void mark_streaming_write_completed () {}
time_t timestamp() const { return _timestamp; }
void stamp (time_t when) { _timestamp = when; }
void set_captured_for (string str) { _captured_for = str; }
string captured_for() const { return _captured_for; }
uint32_t read_data_count() const { return _read_data_count; }
uint32_t write_data_count() const { return _write_data_count; }
int read_peaks (PeakData *peaks, jack_nframes_t npeaks, jack_nframes_t start, jack_nframes_t cnt, double samples_per_unit) const;
int build_peaks ();
bool peaks_ready (sigc::slot<void>, sigc::connection&) const;
static sigc::signal<void,Source*> SourceCreated;
sigc::signal<void,Source *> GoingAway;
mutable sigc::signal<void> PeaksReady;
mutable sigc::signal<void,jack_nframes_t,jack_nframes_t> PeakRangeReady;
XMLNode& get_state ();
int set_state (const XMLNode&);
static int start_peak_thread ();
static void stop_peak_thread ();
int rename_peakfile (std::string newpath);
static void set_build_missing_peakfiles (bool yn) {
_build_missing_peakfiles = yn;
}
static void set_build_peakfiles (bool yn) {
_build_peakfiles = yn;
}
protected:
static bool _build_missing_peakfiles;
static bool _build_peakfiles;
string _name;
uint32_t _use_cnt;
bool _peaks_built;
mutable PBD::Lock _lock;
jack_nframes_t _length;
bool next_peak_clear_should_notify;
string peakpath;
time_t _timestamp;
string _captured_for;
mutable uint32_t _read_data_count; // modified in read()
mutable uint32_t _write_data_count; // modified in write()
int initialize_peakfile (bool newfile, string path);
void build_peaks_from_scratch ();
int do_build_peak (jack_nframes_t, jack_nframes_t);
virtual jack_nframes_t read_unlocked (Sample *dst, jack_nframes_t start, jack_nframes_t cnt, char * workbuf) const = 0;
virtual string peak_path(string audio_path) = 0;
static pthread_t peak_thread;
static bool have_peak_thread;
static void* peak_thread_work(void*);
static int peak_request_pipe[2];
struct PeakRequest {
enum Type {
Build,
Quit
};
};
static vector<Source*> pending_peak_sources;
static PBD::Lock pending_peak_sources_lock;
static void queue_for_peaks (Source&);
static void clear_queue_for_peaks ();
struct PeakBuildRecord {
jack_nframes_t frame;
jack_nframes_t cnt;
PeakBuildRecord (jack_nframes_t f, jack_nframes_t c)
: frame (f), cnt (c) {}
PeakBuildRecord (const PeakBuildRecord& other) {
frame = other.frame;
cnt = other.cnt;
}
};
list<Source::PeakBuildRecord *> pending_peak_builds;
private:
ARDOUR::id_t _id;
bool file_changed (string path);
};
}
#endif /* __ardour_source_h__ */
|
