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4f807ee53e
Rename "player" directory to "players", and reintroduce the "player_" file prefix. This has been done after sev's request. "players/player_foo.*" is more descriptive, and avoids potential name clashes in libraries
178 lines
3.9 KiB
C++
178 lines
3.9 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
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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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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*/
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#ifndef SCUMM_PLAYERS_PLAYER_V2CMS_H
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#define SCUMM_PLAYERS_PLAYER_V2CMS_H
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#include "scumm/players/player_v2base.h" // for channel_data
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class CMSEmulator;
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namespace Scumm {
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/**
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* Scumm V2 CMS/Gameblaster MIDI driver.
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*/
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class Player_V2CMS : public Player_V2Base {
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public:
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Player_V2CMS(ScummEngine *scumm, Audio::Mixer *mixer);
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virtual ~Player_V2CMS();
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// MusicEngine API
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virtual void setMusicVolume(int vol);
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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();
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virtual int getSoundStatus(int sound) const;
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// AudioStream API
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virtual int readBuffer(int16 *buffer, const int numSamples);
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virtual bool isStereo() const { return true; }
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private:
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struct Voice {
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byte attack;
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byte decay;
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byte sustain;
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byte release;
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byte octadd;
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int16 vibrato;
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int16 vibrato2;
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int16 noise;
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};
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struct Voice2 {
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byte *amplitudeOutput;
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byte *freqOutput;
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byte *octaveOutput;
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uint8 channel;
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int8 sustainLevel;
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uint8 attackRate;
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uint8 maxAmpl;
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uint8 decayRate;
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uint8 sustainRate;
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uint8 releaseRate;
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uint8 releaseTime;
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int8 vibratoRate;
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int8 vibratoDepth;
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int8 curVibratoRate;
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int8 curVibratoUnk;
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int8 unkVibratoRate;
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int8 unkVibratoDepth;
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int8 unkRate;
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int8 unkCount;
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enum EnvelopeState {
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kEnvelopeAttack,
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kEnvelopeDecay,
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kEnvelopeSustain,
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kEnvelopeRelease
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};
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EnvelopeState nextProcessState;
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uint8 curVolume;
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uint8 curOctave;
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uint8 curFreq;
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int8 octaveAdd;
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int8 playingNote;
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Voice2 *nextVoice;
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byte chanNumber;
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};
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struct MusicChip {
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byte ampl[4];
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byte freq[4];
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byte octave[2];
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};
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Voice _cmsVoicesBase[16];
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Voice2 _cmsVoices[8];
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MusicChip _cmsChips[2];
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uint8 _tempo;
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uint8 _tempoSum;
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byte _looping;
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byte _octaveMask;
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int16 _midiDelay;
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Voice2 *_midiChannel[16];
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byte _midiChannelUse[16];
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byte *_midiData;
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byte *_midiSongBegin;
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int _loadedMidiSong;
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byte _sfxFreq[4], _sfxAmpl[4], _sfxOctave[2];
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byte _lastMidiCommand;
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uint _outputTableReady;
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byte _voiceTimer;
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int _musicTimer, _musicTimerTicks;
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void loadMidiData(byte *data, int sound);
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void play();
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void processChannel(Voice2 *channel);
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void processRelease(Voice2 *channel);
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void processAttack(Voice2 *channel);
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void processDecay(Voice2 *channel);
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void processSustain(Voice2 *channel);
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void processVibrato(Voice2 *channel);
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void playMusicChips(const MusicChip *table);
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void playNote(byte *&data);
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void clearNote(byte *&data);
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void offAllChannels();
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void playVoice();
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void processMidiData();
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Voice2 *getFreeVoice();
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Voice2 *getPlayVoice(byte param);
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struct MidiNote {
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byte frequency;
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byte baseOctave;
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};
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static const MidiNote _midiNotes[132];
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static const byte _attackRate[16];
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static const byte _decayRate[16];
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static const byte _sustainRate[16];
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static const byte _releaseRate[16];
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static const byte _volumeTable[16];
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static const byte _cmsInitData[26];
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CMSEmulator *_cmsEmu;
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};
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} // End of namespace Scumm
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#endif
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