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Implement BufferManager

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Also, apply things learned while writing BufferManager to the similar NotePlayHandleManager
This commit is contained in:
Vesa
2014-08-24 23:23:58 +03:00
parent af60402078
commit 311d33d648
5 changed files with 181 additions and 20 deletions
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55
include/BufferManager.h Normal file
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@@ -0,0 +1,55 @@
/*
* BufferManager.h - A buffer caching/memory management system
*
* Copyright (c) 2014 Vesa Kivimäki <contact/dot/diizy/at/nbl/dot/fi>
* Copyright (c) 2006-2014 Tobias Doerffel <tobydox/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 BUFFER_MANAGER_H
#define BUFFER_MANAGER_H
#include "MemoryManager.h"
#include "lmms_basics.h"
#include "engine.h"
#include "Mixer.h"
#include <QtCore/QAtomicInt>
#include <QtCore/QReadWriteLock>
const int BM_INITIAL_BUFFERS = 256;
const int BM_INCREMENT = 16;
class BufferManager
{
public:
static void init();
static sampleFrame * acquire();
static void release( sampleFrame * buf );
static void extend( int c );
private:
static sampleFrame ** s_available;
static QAtomicInt s_availableIndex;
static QReadWriteLock s_mutex;
static int s_size;
};
#endif

7
include/NotePlayHandle.h
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@@ -32,6 +32,7 @@
#include "track.h"
#include "MemoryManager.h"
#include <QtCore/QAtomicInt>
#include <QtCore/QReadWriteLock>
class InstrumentTrack;
class NotePlayHandle;
@@ -333,10 +334,10 @@ public:
static void extend( int i );
private:
static NotePlayHandleList s_nphCache;
static NotePlayHandleList s_available;
static QMutex s_mutex;
static NotePlayHandle ** s_available;
static QReadWriteLock s_mutex;
static QAtomicInt s_availableIndex;
static int s_size;
};