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//=============================================================================
// MusE
// Linux Music Editor
// $Id:$
//
// Copyright (C) 2002-2006 by Werner Schweer and others
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License version 2.
//
// 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.
//=============================================================================
#include "midififo.h"
//---------------------------------------------------------
// put
// return true on fifo overflow
//---------------------------------------------------------
bool MidiFifo::put(const MidiEvent& event)
{
if (size < MIDI_FIFO_SIZE) {
fifo[wIndex] = event;
wIndex = (wIndex + 1) % MIDI_FIFO_SIZE;
// q_atomic_increment(&size);
++size;
return false;
}
return true;
}
//---------------------------------------------------------
// get
//---------------------------------------------------------
MidiEvent MidiFifo::get()
{
MidiEvent event(fifo[rIndex]);
rIndex = (rIndex + 1) % MIDI_FIFO_SIZE;
// q_atomic_decrement(&size);
--size;
return event;
}
//---------------------------------------------------------
// peek
//---------------------------------------------------------
const MidiEvent& MidiFifo::peek(int n)
{
int idx = (rIndex + n) % MIDI_FIFO_SIZE;
return fifo[idx];
}
//---------------------------------------------------------
// remove
//---------------------------------------------------------
void MidiFifo::remove()
{
rIndex = (rIndex + 1) % MIDI_FIFO_SIZE;
// q_atomic_decrement(&size);
--size;
}
//---------------------------------------------------------
// put
// return true on fifo overflow
//---------------------------------------------------------
bool MidiOutFifo::put(const MidiOutEvent& event)
{
if (size < MIDI_FIFO_SIZE) {
fifo[wIndex] = event;
wIndex = (wIndex + 1) % MIDI_FIFO_SIZE;
// q_atomic_increment(&size);
++size;
return false;
}
return true;
}
//---------------------------------------------------------
// get
//---------------------------------------------------------
MidiOutEvent MidiOutFifo::get()
{
MidiOutEvent event(fifo[rIndex]);
rIndex = (rIndex + 1) % MIDI_FIFO_SIZE;
// q_atomic_decrement(&size);
--size;
return event;
}
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