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
|
/* This file is part of Evoral.
* Copyright (C) 2008 David Robillard <http://drobilla.net>
* Copyright (C) 2000-2008 Paul Davis
*
* Evoral 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.
*
* Evoral 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 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.,
* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef EVORAL_EVENT_HPP
#define EVORAL_EVENT_HPP
#include <cstdlib>
#include <cstring>
#include <sstream>
#include <stdint.h>
#include "evoral/visibility.h"
#include "evoral/types.hpp"
/** If this is not defined, all methods of MidiEvent are RT safe
* but MidiEvent will never deep copy and (depending on the scenario)
* may not be usable in STL containers, signals, etc.
*/
#define EVORAL_EVENT_ALLOC 1
namespace Evoral {
LIBEVORAL_API event_id_t event_id_counter();
LIBEVORAL_API event_id_t next_event_id();
LIBEVORAL_API void init_event_id_counter(event_id_t n);
/** An event (much like a type generic jack_midi_event_t)
*
* Template parameter Time is the type of the time stamp used for this event.
*/
template<typename Time>
class LIBEVORAL_API Event {
public:
#ifdef EVORAL_EVENT_ALLOC
Event (EventType type=0, Time time=Time(), uint32_t size=0, uint8_t* buf=NULL, bool alloc=false);
Event (EventType type, Time time, uint32_t size, const uint8_t* buf);
/** Copy \a copy.
*
* If \a alloc is true, the buffer will be copied and this method
* is NOT REALTIME SAFE. Otherwise both events share a buffer and
* memory management semantics are the caller's problem.
*/
Event(const Event& copy, bool alloc);
~Event();
void assign (const Event& other);
void set(const uint8_t* buf, uint32_t size, Time t);
inline bool operator==(const Event& other) const {
if (_type != other._type)
return false;
if (_nominal_time != other._nominal_time)
return false;
if (_original_time != other._original_time)
return false;
if (_size != other._size)
return false;
if (_buf == other._buf)
return true;
for (uint32_t i=0; i < _size; ++i)
if (_buf[i] != other._buf[i])
return false;
return true;
}
inline bool operator!=(const Event& other) const { return ! operator==(other); }
inline bool owns_buffer() const { return _owns_buf; }
/** set event data (e.g. midi data)
* @param size number of bytes
* @param buf raw 8bit data
* @param own set to true if the buffer owns the data (copy, allocate/free) or false to reference previously allocated data.
*/
inline void set_buffer(uint32_t size, uint8_t* buf, bool own) {
if (_owns_buf) {
free(_buf);
_buf = NULL;
}
_size = size;
_buf = buf;
_owns_buf = own;
}
inline void realloc(uint32_t size) {
if (_owns_buf) {
if (size > _size)
_buf = (uint8_t*) ::realloc(_buf, size);
} else {
_buf = (uint8_t*) ::malloc(size);
_owns_buf = true;
}
_size = size;
}
inline void clear() {
_type = 0;
_original_time = Time();
_nominal_time = Time();
_size = 0;
_buf = NULL;
}
#else
inline void set_buffer(uint8_t* buf) { _buf = buf; }
#endif // EVORAL_EVENT_ALLOC
inline EventType event_type() const { return _type; }
inline Time time() const { return _nominal_time; }
inline Time original_time() const { return _original_time; }
inline uint32_t size() const { return _size; }
inline const uint8_t* buffer() const { return _buf; }
inline uint8_t* buffer() { return _buf; }
inline void set_event_type(EventType t) { _type = t; }
void set_time(Time);
void set_original_time(Time);
inline event_id_t id() const { return _id; }
inline void set_id(event_id_t n) { _id = n; }
protected:
EventType _type; /**< Type of event (application relative, NOT MIDI 'type') */
Time _original_time; /**< Sample index (or beat time) at which event is valid */
Time _nominal_time; /**< Quantized version of _time, used in preference */
uint32_t _size; /**< Number of uint8_ts of data in \a buffer */
uint8_t* _buf; /**< Raw MIDI data */
event_id_t _id; /** UUID for each event, should probably be 64bit or at least unsigned */
#ifdef EVORAL_EVENT_ALLOC
bool _owns_buf; /**< Whether buffer is locally allocated */
#endif
};
template<typename Time>
/*LIBEVORAL_API*/ std::ostream& operator<<(std::ostream& o, const Evoral::Event<Time>& ev) {
o << "Event #" << ev.id() << " type = " << ev.event_type() << " @ " << ev.time();
o << std::hex;
for (uint32_t n = 0; n < ev.size(); ++n) {
o << ' ' << (int) ev.buffer()[n];
}
o << std::dec;
return o;
}
} // namespace Evoral
#endif // EVORAL_EVENT_HPP
|
