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127 lines
3.4 KiB
C++
127 lines
3.4 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_V3A_H
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#define SCUMM_PLAYERS_PLAYER_V3A_H
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#include "common/scummsys.h"
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#include "common/util.h"
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#include "scumm/music.h"
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#include "audio/mixer.h"
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#include "audio/mods/paula.h"
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class Mixer;
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namespace Scumm {
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class ScummEngine;
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/**
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* Scumm V3 Amiga sound/music driver.
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*/
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class Player_V3A : public MusicEngine, Audio::Paula {
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public:
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Player_V3A(ScummEngine *scumm, Audio::Mixer *mixer);
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~Player_V3A() override;
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// MusicEngine API
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void setMusicVolume(int vol) 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 getSoundStatus(int sound) const override;
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int getMusicTimer() override;
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protected:
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// Paula API
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void interrupt() override;
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void interruptChannel(byte channel) override;
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private:
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struct SndChan {
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int period; /* 16.16 fixed point */
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int volume; /* 8.8 fixed point */
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int loopCount; /* decrement once per loop, halt playback upon reaching zero */
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int sweepRate; /* add to period once per frame */
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int haltTimer; /* decrement once per frame, halt playback upon reaching zero */
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int fadeRate; /* if haltTimer is zero, subtract 0x100*this from volume once per frame */
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int resourceId;
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int priority;
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// Both of these are used exclusively by the Loom music engine
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int instrument;
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int canOverride;
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};
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struct InstData {
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int8 *mainData[6];
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uint16 mainLen[6];
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int8 *loopData[6];
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uint16 loopLen[6];
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int16 octave[6];
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int16 pitchAdjust;
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int16 volumeFade;
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};
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ScummEngine *const _vm;
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Audio::Mixer *const _mixer;
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Audio::SoundHandle _soundHandle;
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SndChan _channels[4];
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const int SFX_CHANNEL_MAP[2][2] = {
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{ 0, 1 },
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{ 3, 2 }
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};
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const uint16 NOTE_FREQS[4][12] = {
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{0x06B0, 0x0650, 0x05F4, 0x05A0, 0x054C, 0x0500, 0x04B8, 0x0474, 0x0434, 0x03F8, 0x03C0, 0x0388},
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{0x0358, 0x0328, 0x02FA, 0x02D0, 0x02A6, 0x0280, 0x025C, 0x023A, 0x021A, 0x01FC, 0x01E0, 0x01C4},
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{0x01AC, 0x0194, 0x017D, 0x0168, 0x0153, 0x0140, 0x012E, 0x011D, 0x010D, 0x00FE, 0x00F0, 0x00E2},
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{0x00D6, 0x00CA, 0x00BE, 0x00B4, 0x00A9, 0x00A0, 0x0097, 0x008E, 0x0086, 0x007F, 0x00F0, 0x00E2}
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};
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int _curSong;
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int8 *_songData;
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uint16 _songPtr;
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uint16 _songDelay;
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int _musicTimer;
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enum {
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kInitStateFailed = -1,
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kInitStateNotReady = 0,
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kInitStateReady = 1
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} _initState;
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int8 *_wavetableData;
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InstData *_wavetablePtrs;
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void updateMusicIndy();
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void updateMusicLoom();
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void updateSounds();
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void startNote(int channel, int instrument, int pitch, int volume, int duration);
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bool init();
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};
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} // End of namespace Scumm
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#endif
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