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99 lines
2.2 KiB
C++
99 lines
2.2 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_V1_H
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#define PLAYER_V1_H
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#include "scumm/player_v2.h"
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namespace Scumm {
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/**
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* Scumm V1 PC-Speaker player.
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*/
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class Player_V1 : public Player_V2 {
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public:
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Player_V1(ScummEngine *scumm, bool pcjr);
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~Player_V1();
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virtual void startSound(int sound);
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virtual void stopSound(int sound);
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virtual void stopAllSounds();
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virtual int getMusicTimer() const;
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protected:
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virtual void nextTick();
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virtual void clear_channel(int i);
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virtual void chainSound(int nr, byte *data);
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virtual void generateSpkSamples(int16 *data, uint len);
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virtual void generatePCjrSamples(int16 *data, uint len);
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void restartSound();
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void set_mplex(uint mplex);
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void parseSpeakerChunk();
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void nextSpeakerCmd();
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void parsePCjrChunk();
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void nextPCjrCmd();
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private:
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struct channel_data_v1 {
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uint freq;
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uint volume;
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byte *cmd_ptr;
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uint notelen;
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uint hull_counter;
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uint attack;
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uint decay;
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uint level;
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uint sustain_1;
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uint sustain_2;
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int sustctr;
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};
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channel_data_v1 _channels[4];
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byte *_next_chunk;
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byte *_repeat_chunk;
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uint _chunk_type;
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uint _mplex_step;
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uint _mplex;
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uint _repeat_ctr;
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uint _freq_current;
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int _forced_level;
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uint16 _random_lsr;
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uint *_value_ptr;
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uint _time_left;
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uint _start;
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uint _end;
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int _delta;
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uint *_value_ptr_2;
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uint _time_left_2;
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uint _start_2;
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int _delta_2;
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};
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} // End of namespace Scumm
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#endif
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