171 lines
3.8 KiB
C++
171 lines
3.8 KiB
C++
/* This file is part of Evoral.
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* Copyright (C) 2008 David Robillard <http://drobilla.net>
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* Copyright (C) 2000-2008 Paul Davis
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*
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* Evoral is free software; you can redistribute it and/or modify it under the
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* terms of the GNU General Public License as published by the Free Software
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* Foundation; either version 2 of the License, or (at your option) any later
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* version.
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*
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* Evoral is distributed in the hope that it will be useful, but WITHOUT ANY
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* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU General Public License for details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <glib.h>
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#include "evoral/Event.hpp"
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#include "evoral/Beats.hpp"
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namespace Evoral {
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static event_id_t _event_id_counter = 0;
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event_id_t
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event_id_counter()
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{
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return g_atomic_int_get (&_event_id_counter);
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}
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void
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init_event_id_counter(event_id_t n)
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{
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g_atomic_int_set (&_event_id_counter, n);
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}
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event_id_t
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next_event_id ()
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{
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/* TODO: handle 31bit overflow , event_id_t is an int32_t,
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* and libsmf only supports loading uint32_t vlq's, see smf_extract_vlq()
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*
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* event-IDs only have to be unique per .mid file.
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* Previously (Ardour 4.2ish) Ardour re-generated those IDs when loading the
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* file but that lead to .mid files being modified on every load/save.
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*
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* current user-record: is event-counter="276390506" (just abov 2^28)
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*/
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return g_atomic_int_add (&_event_id_counter, 1);
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}
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#ifdef EVORAL_EVENT_ALLOC
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template<typename Timestamp>
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Event<Timestamp>::Event(EventType type, Timestamp time, uint32_t size, uint8_t* buf, bool alloc)
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: _type(type)
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, _time(time)
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, _size(size)
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, _buf(buf)
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, _id(-1)
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, _owns_buf(alloc)
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{
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if (alloc) {
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_buf = (uint8_t*)malloc(_size);
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if (buf) {
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memcpy(_buf, buf, _size);
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} else {
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memset(_buf, 0, _size);
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}
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}
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}
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template<typename Timestamp>
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Event<Timestamp>::Event(EventType type,
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Timestamp time,
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uint32_t size,
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const uint8_t* buf)
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: _type(type)
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, _time(time)
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, _size(size)
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, _buf((uint8_t*)malloc(size))
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, _id(-1)
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, _owns_buf(true)
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{
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memcpy(_buf, buf, _size);
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}
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template<typename Timestamp>
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Event<Timestamp>::Event(const Event& copy, bool owns_buf)
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: _type(copy._type)
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, _time(copy._time)
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, _size(copy._size)
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, _buf(copy._buf)
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, _id (next_event_id ())
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, _owns_buf(owns_buf)
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{
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if (owns_buf) {
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_buf = (uint8_t*)malloc(_size);
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if (copy._buf) {
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memcpy(_buf, copy._buf, _size);
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} else {
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memset(_buf, 0, _size);
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}
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}
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}
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template<typename Timestamp>
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Event<Timestamp>::~Event() {
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if (_owns_buf) {
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free(_buf);
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}
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}
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template<typename Timestamp>
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void
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Event<Timestamp>::assign(const Event& other)
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{
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_id = other._id;
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_type = other._type;
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_time = other._time;
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_owns_buf = other._owns_buf;
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if (_owns_buf) {
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if (other._buf) {
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if (other._size > _size) {
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_buf = (uint8_t*)::realloc(_buf, other._size);
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}
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memcpy(_buf, other._buf, other._size);
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} else {
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free(_buf);
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_buf = NULL;
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}
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} else {
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_buf = other._buf;
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}
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_size = other._size;
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}
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template<typename Timestamp>
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void
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Event<Timestamp>::set (const uint8_t* buf, uint32_t size, Timestamp t)
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{
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if (_owns_buf) {
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if (_size < size) {
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_buf = (uint8_t*) ::realloc(_buf, size);
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}
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memcpy (_buf, buf, size);
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} else {
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/* XXX this is really dangerous given the
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const-ness of buf. The API should really
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intervene here.
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*/
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_buf = const_cast<uint8_t*> (buf);
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}
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_time = t;
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_size = size;
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}
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#endif // EVORAL_EVENT_ALLOC
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template class Event<Evoral::Beats>;
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template class Event<double>;
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template class Event<int64_t>;
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} // namespace Evoral
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