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101 lines
3.1 KiB
C++
101 lines
3.1 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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* $URL$
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* $Id$
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*
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*/
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#ifndef SCI_SFX_MIDI_H
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#define SCI_SFX_MIDI_H
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#include "sound/mididrv.h"
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#include "sound/softsynth/emumidi.h"
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#include "common/error.h"
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namespace Sci {
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class ResourceManager;
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enum {
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MIDI_CHANNELS = 16
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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 {
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protected:
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MidiDriver *_driver;
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public:
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int open() { return open(NULL); }
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virtual int open(ResourceManager *resmgr) { return _driver->open(); }
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virtual void close() { _driver->close(); }
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virtual void send(uint32 b) { _driver->send(b); }
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uint32 getBaseTempo() { return _driver->getBaseTempo(); }
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virtual bool hasRhythmChannel() const = 0;
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MidiChannel *allocateChannel() { return _driver->allocateChannel(); }
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MidiChannel *getPercussionChannel() { return _driver->getPercussionChannel(); }
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void setTimerCallback(void *timer_param, Common::TimerManager::TimerProc timer_proc) { _driver->setTimerCallback(timer_param, timer_proc); }
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virtual int getPlayMask() const = 0;
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virtual int getPolyphony() const = 0;
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virtual void setVolume(byte volume) {
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// Master Volume SysEx message
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const byte message[] = {0x7f, 0x7f, 0x04, 0x01, (volume * 127 / 15) & 0x7f, (volume * 127 / 15) & 0x7f};
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_driver->sysEx(message, 6);
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}
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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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} // End of namespace Sci
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#endif // SCI_SFX_MIDI_H
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