player_v1.h

/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * 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 3 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, see <http://www.gnu.org/licenses/>.
 *
 */
 
#ifndef SCUMM_PLAYERS_PLAYER_V1_H
#define SCUMM_PLAYERS_PLAYER_V1_H
 
#include "scumm/players/player_v2.h"
 
namespace Scumm {
 
class Player_V1 : public Player_V2 {
public:
    Player_V1(ScummEngine *scumm, Audio::Mixer *mixer, bool pcjr);
    ~Player_V1() override;
 
    void startSound(int sound) override;
    void stopSound(int sound) override;
    void stopAllSounds() override;
    int  getMusicTimer() override;
 
protected:
    void nextTick() override;
    void clear_channel(int i) override;
    void chainSound(int nr, byte *data) override;
 
    void generateSpkSamples(int16 *data, uint len) override;
    void generatePCjrSamples(int16 *data, uint len) override;
 
    void set_mplex(uint mplex);
    void parseSpeakerChunk();
    void nextSpeakerCmd();
    void parsePCjrChunk();
    void nextPCjrCmd();
 
private:
    struct channel_data_v1 {
        uint freq;
        uint volume;
        byte *cmd_ptr;
        uint notelen;
        uint hull_counter;
        uint attack;
        uint decay;
        uint level;
        uint sustain_1;
        uint sustain_2;
        int  sustctr;
    };
 
    channel_data_v1 _channels[4];
 
    byte *_next_chunk;
    byte *_repeat_chunk;
    uint  _chunk_type;
    uint  _mplex_step;
    uint  _mplex;
    uint  _repeat_ctr;
    int   _forced_level;
    uint16 _random_lsr;
    uint  *_value_ptr;
    uint  _time_left;
    uint  _start;
    uint  _end;
    int   _delta;
    uint  *_value_ptr_2;
    uint  _time_left_2;
    uint  _start_2;
    int   _delta_2;
};
 
} // End of namespace Scumm
 
#endif