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/* ScummVM - Scumm Interpreter
* Copyright (C) 2001 Ludvig Strigeus
* Copyright (C) 2001-2005 The ScummVM project
*
* 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; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* $Header$
*
*/
#ifndef PLAYER_MOD_H
#define PLAYER_MOD_H
#include "scumm/scumm.h"
#include "sound/audiostream.h"
namespace Audio {
class RateConverter;
}
namespace Scumm {
/**
* Generic Amiga MOD mixer - provides a 60Hz 'update' routine.
*/
class Player_MOD : public AudioStream {
public:
Player_MOD(ScummEngine *scumm);
virtual ~Player_MOD();
virtual void setMusicVolume(int vol);
virtual void startChannel(int id, void *data, int size, int rate, uint8 vol, int loopStart = 0, int loopEnd = 0, int8 pan = 0);
virtual void stopChannel(int id);
virtual void setChannelVol(int id, uint8 vol);
virtual void setChannelPan(int id, int8 pan);
virtual void setChannelFreq(int id, int freq);
typedef void ModUpdateProc(void *param);
virtual void setUpdateProc(ModUpdateProc *proc, void *param, int freq);
virtual void clearUpdateProc();
// AudioStream API
int readBuffer(int16 *buffer, const int numSamples) {
do_mix(buffer, numSamples / 2);
return numSamples;
}
bool isStereo() const { return true; }
bool endOfData() const { return false; }
int getRate() const { return _samplerate; }
private:
enum {
MOD_MAXCHANS = 24
};
struct soundChan {
int id;
uint8 vol;
int8 pan;
uint16 freq;
Audio::RateConverter *converter;
AudioStream *input;
};
Audio::Mixer *_mixer;
uint32 _mixamt;
uint32 _mixpos;
int _samplerate;
soundChan _channels[MOD_MAXCHANS];
uint8 _maxvol;
virtual void do_mix(int16 *buf, uint len);
ModUpdateProc *_playproc;
void *_playparam;
};
} // End of namespace Scumm
#endif
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