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null.h

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00001 /* ScummVM - Graphic Adventure Engine
00002  *
00003  * ScummVM is the legal property of its developers, whose names
00004  * are too numerous to list here. Please refer to the COPYRIGHT
00005  * file distributed with this source distribution.
00006  *
00007  * This program is free software; you can redistribute it and/or
00008  * modify it under the terms of the GNU General Public License
00009  * as published by the Free Software Foundation; either version 2
00010  * of the License, or (at your option) any later version.
00011  *
00012  * This program is distributed in the hope that it will be useful,
00013  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00014  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00015  * GNU General Public License for more details.
00016  *
00017  * You should have received a copy of the GNU General Public License
00018  * along with this program; if not, write to the Free Software
00019  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
00020  *
00021  */
00022 
00023 #ifndef AUDIO_NULL_H
00024 #define AUDIO_NULL_H
00025 
00026 #include "audio/musicplugin.h"
00027 #include "audio/mpu401.h"
00028 #include "common/translation.h"
00029 
00030 /* NULL driver */
00031 class MidiDriver_NULL : public MidiDriver_MPU401 {
00032 public:
00033     int open() { return 0; }
00034     bool isOpen() const { return true; }
00035     void send(uint32 b) { }
00036 };
00037 
00038 
00039 // Plugin interface
00040 
00041 class NullMusicPlugin : public MusicPluginObject {
00042 public:
00043     virtual const char *getName() const {
00044         return _s("No music");
00045     }
00046 
00047     virtual const char *getId() const {
00048         return "null";
00049     }
00050 
00051     virtual MusicDevices getDevices() const;
00052     Common::Error createInstance(MidiDriver **mididriver, MidiDriver::DeviceHandle = 0) const;
00053 };
00054 
00055 #endif


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