118 lines
3 KiB
C
118 lines
3 KiB
C
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/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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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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* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* $URL$
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* $Id$
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*
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*/
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#ifndef SOUND_MIDIPLAYER_H
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#define SOUND_MIDIPLAYER_H
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#include "common/scummsys.h"
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#include "common/mutex.h"
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#include "audio/mididrv.h"
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class MidiParser;
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namespace Audio {
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/**
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* Simple MIDI playback class.
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*
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* @note Currently incomplete, as it lacks play() methods. This is just a
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* start of the real thing, which tries to include code replicated between
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* several of our engines.
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*
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* @todo Document origin of this class. It is based on code shared by
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* several engines (e.g. DRACI says it copied it from MADE, which took
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* it from SAGE).
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*/
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class MidiPlayer : public MidiDriver_BASE {
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public:
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MidiPlayer();
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~MidiPlayer();
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// TODO: Implement ways to actually play stuff
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//virtual void play(TODO);
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// TODO: Document these
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virtual void stop();
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virtual void pause();
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virtual void resume();
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bool isPlaying() const { return _isPlaying; }
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int getVolume() const { return _masterVolume; }
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virtual void setVolume(int volume); // FIXME: Overloaded by Tinsel
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void syncVolume();
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bool hasNativeMT32() const { return _nativeMT32; }
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// MidiDriver_BASE interface
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virtual void send(uint32 b);
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virtual void metaEvent(byte type, byte *data, uint16 length);
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/**
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* This method is invoked by send() after suitably filtering
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* the message b.
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*/
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virtual void sendToChannel(byte channel, uint32 b);
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/**
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* This method is invoked by metaEvent when an end-of-track
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* event arrives. By default, this tells the parser
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* to jump to the start (if looping is enabled) resp.
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* invokes stope():
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* Overload this to customize behavior.
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*/
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virtual void endOfTrack();
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protected:
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#if 0
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// TODO: Start to make use of these, once we figured
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// out the right way :)
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static void onTimer(void *data);
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virtual void onTimer();
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#endif
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enum {
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kNumChannels = 16
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};
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Common::Mutex _mutex;
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MidiDriver *_driver;
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MidiParser *_parser;
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MidiChannel *_channelsTable[kNumChannels];
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uint8 _channelsVolume[kNumChannels];
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bool _isLooping;
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bool _isPlaying;
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int _masterVolume; // FIXME: byte or int ?
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bool _nativeMT32;
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};
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} // End of namespace Audio
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#endif
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