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/*
* Copyright (C) 2008-2016 David Robillard <d@drobilla.net>
* Copyright (C) 2009-2017 Paul Davis <paul@linuxaudiosystems.com>
* Copyright (C) 2010 Carl Hetherington <carl@carlh.net>
* Copyright (C) 2014-2015 Robin Gareus <robin@gareus.org>
*
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <glib.h>
#include "temporal/beats.h"
#include "evoral/Event.h"
namespace Evoral {
static event_id_t _event_id_counter = 0;
event_id_t
event_id_counter()
{
return g_atomic_int_get (&_event_id_counter);
}
void
init_event_id_counter(event_id_t n)
{
g_atomic_int_set (&_event_id_counter, n);
}
event_id_t
next_event_id ()
{
/* TODO: handle 31bit overflow , event_id_t is an int32_t,
* and libsmf only supports loading uint32_t vlq's, see smf_extract_vlq()
*
* event-IDs only have to be unique per .mid file.
* Previously (Ardour 4.2ish) Ardour re-generated those IDs when loading the
* file but that lead to .mid files being modified on every load/save.
*
* current user-record: is event-counter="276390506" (just abov 2^28)
*/
return g_atomic_int_add (&_event_id_counter, 1);
}
#ifdef EVORAL_EVENT_ALLOC
template<typename Timestamp>
Event<Timestamp>::Event(EventType type, Timestamp time, uint32_t size, uint8_t* buf, bool alloc)
: _type(type)
, _time(time)
, _size(size)
, _buf(buf)
, _id(-1)
, _owns_buf(alloc)
{
if (alloc) {
_buf = (uint8_t*)malloc(_size);
if (buf) {
memcpy(_buf, buf, _size);
} else {
memset(_buf, 0, _size);
}
}
}
template<typename Timestamp>
Event<Timestamp>::Event(EventType type,
Timestamp time,
uint32_t size,
const uint8_t* buf)
: _type(type)
, _time(time)
, _size(size)
, _buf((uint8_t*)malloc(size))
, _id(-1)
, _owns_buf(true)
{
memcpy(_buf, buf, _size);
}
template<typename Timestamp>
Event<Timestamp>::Event(const Event& copy, bool owns_buf)
: _type(copy._type)
, _time(copy._time)
, _size(copy._size)
, _buf(copy._buf)
, _id (next_event_id ())
, _owns_buf(owns_buf)
{
if (owns_buf) {
_buf = (uint8_t*)malloc(_size);
if (copy._buf) {
memcpy(_buf, copy._buf, _size);
} else {
memset(_buf, 0, _size);
}
}
}
template<typename Timestamp>
Event<Timestamp>::~Event() {
if (_owns_buf) {
free(_buf);
}
}
template<typename Timestamp>
void
Event<Timestamp>::assign(const Event& other)
{
_id = other._id;
_type = other._type;
_time = other._time;
_owns_buf = other._owns_buf;
if (_owns_buf) {
if (other._buf) {
if (other._size > _size) {
_buf = (uint8_t*)::realloc(_buf, other._size);
}
memcpy(_buf, other._buf, other._size);
} else {
free(_buf);
_buf = NULL;
}
} else {
_buf = other._buf;
}
_size = other._size;
}
template<typename Timestamp>
void
Event<Timestamp>::set (const uint8_t* buf, uint32_t size, Timestamp t)
{
if (_owns_buf) {
if (_size < size) {
_buf = (uint8_t*) ::realloc(_buf, size);
}
memcpy (_buf, buf, size);
} else {
/* XXX this is really dangerous given the
const-ness of buf. The API should really
intervene here.
*/
_buf = const_cast<uint8_t*> (buf);
}
_time = t;
_size = size;
}
#endif // EVORAL_EVENT_ALLOC
template class Event<Temporal::Beats>;
template class Event<double>;
template class Event<int64_t>;
} // namespace Evoral
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