mirror of
https://github.com/LMMS/lmms.git
synced 2026-01-22 21:38:12 -05:00
f4dbb2ff5c
Replaced remaining occurences of old constants and superfluous "void"
on empty argument list of functions.
(cherry picked from commit 166701f9f3)
89 lines
1.8 KiB
C++
89 lines
1.8 KiB
C++
/*
|
|
* fifo_buffer.h - FIFO fixed-size buffer
|
|
*
|
|
* Copyright (c) 2007 Javier Serrano Polo <jasp00/at/users.sourceforge.net>
|
|
*
|
|
* This file is part of Linux MultiMedia Studio - http://lmms.sourceforge.net
|
|
*
|
|
* 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 (see COPYING); if not, write to the
|
|
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
|
|
* Boston, MA 02110-1301 USA.
|
|
*
|
|
*/
|
|
|
|
#ifndef _FIFO_BUFFER_H
|
|
#define _FIFO_BUFFER_H
|
|
|
|
#include <QtCore/QSemaphore>
|
|
|
|
|
|
template<typename T>
|
|
class fifoBuffer
|
|
{
|
|
public:
|
|
fifoBuffer( int _size ) :
|
|
m_reader_sem( _size ),
|
|
m_writer_sem( _size ),
|
|
m_reader_index( 0 ),
|
|
m_writer_index( 0 ),
|
|
m_size( _size )
|
|
{
|
|
m_buffer = new T[_size];
|
|
m_reader_sem.acquire( _size );
|
|
}
|
|
|
|
~fifoBuffer()
|
|
{
|
|
delete[] m_buffer;
|
|
m_reader_sem.release( m_size );
|
|
}
|
|
|
|
void write( T _element )
|
|
{
|
|
m_writer_sem.acquire();
|
|
m_buffer[m_writer_index++] = _element;
|
|
m_writer_index %= m_size;
|
|
m_reader_sem.release();
|
|
}
|
|
|
|
T read()
|
|
{
|
|
m_reader_sem.acquire();
|
|
T element = m_buffer[m_reader_index++];
|
|
m_reader_index %= m_size;
|
|
m_writer_sem.release();
|
|
return( element );
|
|
}
|
|
|
|
bool available()
|
|
{
|
|
return( m_reader_sem.available() );
|
|
}
|
|
|
|
|
|
private:
|
|
QSemaphore m_reader_sem;
|
|
QSemaphore m_writer_sem;
|
|
int m_reader_index;
|
|
int m_writer_index;
|
|
int m_size;
|
|
T * m_buffer;
|
|
|
|
} ;
|
|
|
|
|
|
|
|
|
|
#endif
|