95 lines
2.2 KiB
C++
95 lines
2.2 KiB
C++
/* 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 modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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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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*
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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, see <http://www.gnu.org/licenses/>.
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*
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*/
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#ifndef SCUMM_PLAYERS_PLAYER_V1_H
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#define SCUMM_PLAYERS_PLAYER_V1_H
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#include "scumm/players/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, Audio::Mixer *mixer, bool pcjr);
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~Player_V1() override;
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void startSound(int sound) override;
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void stopSound(int sound) override;
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void stopAllSounds() override;
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int getMusicTimer() override;
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protected:
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void nextTick() override;
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void clear_channel(int i) override;
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void chainSound(int nr, byte *data) override;
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void generateSpkSamples(int16 *data, uint len) override;
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void generatePCjrSamples(int16 *data, uint len) override;
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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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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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