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https://github.com/libretro/scummvm.git
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96 lines
2.3 KiB
C++
96 lines
2.3 KiB
C++
/* ScummVM - Scumm Interpreter
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* Copyright (C) 2001 Ludvig Strigeus
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* Copyright (C) 2001-2004 The ScummVM project
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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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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* $Header$
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*
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*/
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#ifndef PLAYER_MOD_H
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#define PLAYER_MOD_H
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#include "scumm/scumm.h"
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#include "sound/audiostream.h"
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class AudioStream;
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class RateConverter;
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namespace Scumm {
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/**
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* Generic Amiga MOD mixer - provides a 60Hz 'update' routine.
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*/
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class Player_MOD : public AudioStream {
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public:
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Player_MOD(ScummEngine *scumm);
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virtual ~Player_MOD();
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virtual void setMusicVolume(int vol);
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virtual void startChannel(int id, void *data, int size, int rate, uint8 vol, int loopStart = 0, int loopEnd = 0, int8 pan = 0);
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virtual void stopChannel(int id);
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virtual void setChannelVol(int id, uint8 vol);
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virtual void setChannelPan(int id, int8 pan);
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virtual void setChannelFreq(int id, int freq);
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typedef void ModUpdateProc(void *param);
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virtual void setUpdateProc(ModUpdateProc *proc, void *param, int freq);
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virtual void clearUpdateProc();
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// AudioStream API
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int readBuffer(int16 *buffer, const int numSamples) {
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do_mix(buffer, numSamples / 2);
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return numSamples;
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}
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bool isStereo() const { return true; }
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bool endOfData() const { return false; }
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int getRate() const { return _samplerate; }
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private:
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enum {
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MOD_MAXCHANS = 24
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};
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struct soundChan {
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int id;
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uint8 vol;
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int8 pan;
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uint16 freq;
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RateConverter *converter;
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AudioStream *input;
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};
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SoundMixer *_mixer;
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uint32 _mixamt;
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uint32 _mixpos;
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int _samplerate;
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soundChan _channels[MOD_MAXCHANS];
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uint8 _maxvol;
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virtual void do_mix(int16 *buf, uint len);
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ModUpdateProc *_playproc;
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void *_playparam;
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};
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} // End of namespace Scumm
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#endif
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