131 lines
4.2 KiB
C++
131 lines
4.2 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 DGDS_SOUND_DRIVERS_MIDIDRIVER_H
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#define DGDS_SOUND_DRIVERS_MIDIDRIVER_H
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#include "audio/mididrv.h"
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#include "common/platform.h"
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namespace Dgds {
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// Music patches in SCI games:
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// ===========================
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// 1.pat - MT-32 driver music patch
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// 2.pat - Yamaha FB01 driver music patch
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// 3.pat - Adlib driver music patch
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// 4.pat - Casio MT-540 (in earlier SCI0 games)
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// 4.pat - GM driver music patch (in later games that support GM)
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// 7.pat (newer) / patch.200 (older) - Mac driver music patch / Casio CSM-1
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// 9.pat (newer) / patch.005 (older) - Amiga driver music patch
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// 98.pat - Unknown, found in later SCI1.1 games. A MIDI format patch
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// 101.pat - CMS/PCjr driver music patch.
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// Only later PCjr drivers use this patch, earlier ones don't use a patch
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// bank.001 - older SCI0 Amiga instruments
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class ResourceManager;
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enum {
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MIDI_CHANNELS = 16,
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MIDI_PROP_MASTER_VOLUME = 0
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};
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#define MIDI_RHYTHM_CHANNEL 9
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/* Special SCI sound stuff */
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#define SCI_MIDI_TIME_EXPANSION_PREFIX 0xF8
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#define SCI_MIDI_TIME_EXPANSION_LENGTH 240
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#define SCI_MIDI_EOT 0xFC
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#define SCI_MIDI_SET_SIGNAL 0xCF
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#define SCI_MIDI_SET_POLYPHONY 0x4B
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#define SCI_MIDI_RESET_ON_SUSPEND 0x4C
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#define SCI_MIDI_CHANNEL_MUTE 0x4E
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#define SCI_MIDI_SET_REVERB 0x50
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#define SCI_MIDI_HOLD 0x52
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#define SCI_MIDI_CUMULATIVE_CUE 0x60
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#define SCI_MIDI_CHANNEL_SOUND_OFF 0x78 /* all-sound-off for Bn */
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#define SCI_MIDI_CHANNEL_NOTES_OFF 0x7B /* all-notes-off for Bn */
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#define SCI_MIDI_SET_SIGNAL_LOOP 0x7F
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/* If this is the parameter of 0xCF, the loop point is set here */
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#define SCI_MIDI_CONTROLLER(status) ((status & 0xF0) == 0xB0)
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class MidiPlayer : public MidiDriver_BASE {
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protected:
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MidiDriver *_driver;
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int8 _reverb;
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public:
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MidiPlayer() : _driver(nullptr), _reverb(-1) {}
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virtual int open() { return _driver->open(); }
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virtual void close() { _driver->close(); }
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void send(uint32 b) override { _driver->send(b); }
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virtual uint32 getBaseTempo() { return _driver->getBaseTempo(); }
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virtual bool hasRhythmChannel() const = 0;
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virtual void setTimerCallback(void *timer_param, Common::TimerManager::TimerProc timer_proc) { _driver->setTimerCallback(timer_param, timer_proc); }
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virtual byte getPlayId() const = 0;
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virtual int getPolyphony() const = 0;
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virtual int getFirstChannel() const { return 0; }
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virtual int getLastChannel() const { return 15; }
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virtual void setVolume(byte volume) {
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if(_driver)
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_driver->property(MIDI_PROP_MASTER_VOLUME, volume);
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}
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virtual int getVolume() {
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return _driver ? _driver->property(MIDI_PROP_MASTER_VOLUME, 0xffff) : 0;
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}
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// Returns the current reverb, or -1 when no reverb is active
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int8 getReverb() const { return _reverb; }
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// Sets the current reverb, used mainly in MT-32
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virtual void setReverb(int8 reverb) { _reverb = reverb; }
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virtual void playSwitch(bool play) {
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if (!play) {
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// Send "All Sound Off" on all channels
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for (int i = 0; i < MIDI_CHANNELS; ++i)
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_driver->send(0xb0 + i, SCI_MIDI_CHANNEL_NOTES_OFF, 0);
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}
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}
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};
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class SciResource;
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extern SciResource *getMidiPatchData(int num);
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extern MidiPlayer *MidiPlayer_AdLib_create();
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extern MidiPlayer *MidiPlayer_AmigaMac1_create(Common::Platform platform);
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extern MidiPlayer *MidiPlayer_CMS_create();
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extern MidiPlayer *MidiPlayer_PCJr_create();
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extern MidiPlayer *MidiPlayer_PCSpeaker_create();
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extern MidiPlayer *MidiPlayer_Midi_create();
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} // End of namespace Dgds
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#endif // DGDS_SOUND_DRIVERS_MIDIDRIVER_H
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