libs/evoral/src/Event.cpp

   1 /* This file is part of Evoral.
   2  * Copyright (C) 2008 Dave Robillard <http://drobilla.net>
   3  * Copyright (C) 2000-2008 Paul Davis
   4  *
   5  * Evoral is free software; you can redistribute it and/or modify it under the
   6  * terms of the GNU General Public License as published by the Free Software
   7  * Foundation; either version 2 of the License, or (at your option) any later
   8  * version.
   9  *
  10  * Evoral is distributed in the hope that it will be useful, but WITHOUT ANY
  11  * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
  12  * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for details.
  13  *
  14  * You should have received a copy of the GNU General Public License along
  15  * with this program; if not, write to the Free Software Foundation, Inc.,
  16  * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  17  */
  18
  19 #include <glib.h>
  20 #include "evoral/Event.hpp"
  21
  22 namespace Evoral {
  23
  24 static event_id_t _event_id_counter = 0;
  25
  26 event_id_t
  27 event_id_counter()
  28 {
  29         return g_atomic_int_get (&_event_id_counter);
  30 }
  31
  32 void
  33 init_event_id_counter(event_id_t n)
  34 {
  35         g_atomic_int_set (&_event_id_counter, n);
  36 }
  37
  38 event_id_t
  39 next_event_id ()
  40 {
  41         return g_atomic_int_exchange_and_add (&_event_id_counter, 1);
  42 }
  43
  44 #ifdef EVORAL_EVENT_ALLOC
  45
  46 template<typename Timestamp>
  47 Event<Timestamp>::Event(EventType type, Timestamp time, uint32_t size, uint8_t* buf, bool alloc)
  48         : _type(type)
  49         , _original_time(time)
  50         , _nominal_time(time)
  51         , _size(size)
  52         , _buf(buf)
  53         , _owns_buf(alloc)
  54         , _id (-1)
  55 {
  56         if (alloc) {
  57                 _buf = (uint8_t*)malloc(_size);
  58                 if (buf) {
  59                         memcpy(_buf, buf, _size);
  60                 } else {
  61                         memset(_buf, 0, _size);
  62                 }
  63         }
  64 }
  65
  66 template<typename Timestamp>
  67 Event<Timestamp>::Event(const Event& copy, bool owns_buf)
  68         : _type(copy._type)
  69         , _original_time(copy._original_time)
  70         , _nominal_time(copy._nominal_time)
  71         , _size(copy._size)
  72         , _buf(copy._buf)
  73         , _owns_buf(owns_buf)
  74         , _id (copy.id())
  75 {
  76         if (owns_buf) {
  77                 _buf = (uint8_t*)malloc(_size);
  78                 if (copy._buf) {
  79                         memcpy(_buf, copy._buf, _size);
  80                 } else {
  81                         memset(_buf, 0, _size);
  82                 }
  83         }
  84 }
  85
  86 template<typename Timestamp>
  87 Event<Timestamp>::~Event() {
  88         if (_owns_buf) {
  89                 free(_buf);
  90         }
  91 }
  92
  93 #endif // EVORAL_EVENT_ALLOC
  94
  95 template class Event<Evoral::MusicalTime>;
  96 template class Event<uint32_t>;
  97
  98 } // namespace Evoral
  99