Akop Karapetyan
140 lines
3.5 KiB
C
Executable File
140 lines
3.5 KiB
C
Executable File
/*****************************************************************************
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** $Source: /cygdrive/d/Private/_SVNROOT/bluemsx/blueMSX/Src/Memory/DeviceManager.c,v $
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**
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** $Revision: 1.4 $
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**
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** $Date: 2008-03-30 18:38:42 $
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**
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** More info: http://www.bluemsx.com
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**
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** Copyright (C) 2003-2006 Daniel Vik
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**
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** This program is free software; you can redistribute it and/or modify
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** it under the terms of the GNU General Public License as published by
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** the Free Software Foundation; either version 2 of the License, or
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** (at your option) any later version.
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**
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** This program is distributed in the hope that it will be useful,
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** but WITHOUT ANY WARRANTY; without even the implied warranty of
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** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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** GNU General Public License for more details.
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**
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** You should have received a copy of the GNU General Public License
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** along with this program; if not, write to the Free Software
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** Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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**
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******************************************************************************
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*/
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#include "DeviceManager.h"
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#include <stdlib.h>
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#include <string.h>
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#include <stdio.h>
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#define MAX_DEVICES 64
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typedef struct {
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int handle;
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DeviceCallbacks callbacks;
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void* ref;
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int type;
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} DeviceInfo;
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typedef struct {
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DeviceInfo di[MAX_DEVICES];
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int count;
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int lastHandle;
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int shutDown;
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} DeviceManager;
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static DeviceManager deviceManager;
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void deviceManagerCreate() {
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deviceManager.count = 0;
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deviceManager.lastHandle = 0;
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deviceManager.shutDown = 0;
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}
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void deviceManagerDestroy()
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{
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int i;
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deviceManager.shutDown = 1;
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for (i = 0; i < deviceManager.count; i++) {
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if (deviceManager.di[i].callbacks.destroy != NULL) {
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deviceManager.di[i].callbacks.destroy(deviceManager.di[i].ref);
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}
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}
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}
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void deviceManagerReset()
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{
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int i;
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for (i = 0; i < deviceManager.count; i++) {
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if (deviceManager.di[i].callbacks.reset != NULL) {
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deviceManager.di[i].callbacks.reset(deviceManager.di[i].ref);
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}
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}
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}
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void deviceManagerLoadState()
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{
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int i;
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for (i = 0; i < deviceManager.count; i++) {
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if (deviceManager.di[i].callbacks.loadState != NULL) {
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deviceManager.di[i].callbacks.loadState(deviceManager.di[i].ref);
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}
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}
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}
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void deviceManagerSaveState()
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{
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int i;
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for (i = 0; i < deviceManager.count; i++) {
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if (deviceManager.di[i].callbacks.saveState != NULL) {
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deviceManager.di[i].callbacks.saveState(deviceManager.di[i].ref);
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}
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}
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}
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int deviceManagerRegister(int type, DeviceCallbacks* callbacks, void* ref)
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{
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if (deviceManager.count >= MAX_DEVICES) {
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return 0;
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}
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deviceManager.di[deviceManager.count].handle = ++deviceManager.lastHandle;
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deviceManager.di[deviceManager.count].type = type;
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deviceManager.di[deviceManager.count].callbacks = *callbacks;
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deviceManager.di[deviceManager.count].ref = ref;
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deviceManager.count++;
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return deviceManager.lastHandle;
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}
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void deviceManagerUnregister(int handle)
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{
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int i;
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if (deviceManager.count == 0 || deviceManager.shutDown) {
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return;
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}
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for (i = 0; i < deviceManager.count; i++) {
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if (deviceManager.di[i].handle == handle) {
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break;
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}
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}
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if (i == deviceManager.count) {
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return;
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}
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deviceManager.count--;
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while (i < deviceManager.count) {
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deviceManager.di[i] = deviceManager.di[i + 1];
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i++;
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}
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}
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