mirror of
https://github.com/libretro/scummvm.git
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253 lines
7.3 KiB
C++
253 lines
7.3 KiB
C++
/* ScummVM - Scumm Interpreter
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* Copyright (C) 2001-2005 The ScummVM project
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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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*
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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, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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* $Header$
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*/
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#if defined(MACOSX) || defined(macintosh)
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#include "sound/mpu401.h"
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#include "common/util.h"
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#if defined(MACOSX)
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#include <QuickTime/QuickTimeComponents.h>
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#include <QuickTime/QuickTimeMusic.h>
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#else
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#include <QuickTimeComponents.h>
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#include <QuickTimeMusic.h>
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#endif
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// FIXME - the following disables reverb support in the QuickTime / CoreAudio
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// midi backends. For some reasons, reverb will suck away a *lot* of CPU time.
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// Until we know for sure what is causing this and if there is a better way to
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// fix the problem, we just disable all reverb for these backends.
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#define COREAUDIO_REVERB_HACK
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/* QuickTime MIDI driver
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* Original QuickTime support by Florent Boudet <flobo@ifrance.com>
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* Modified by Max Horn
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*/
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class MidiDriver_QT : public MidiDriver_MPU401 {
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public:
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MidiDriver_QT();
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int open();
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void close();
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void send(uint32 b);
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void setPitchBendRange (byte channel, uint range);
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private:
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NoteAllocator qtNoteAllocator;
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NoteChannel qtNoteChannel[16];
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NoteRequest simpleNoteRequest;
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// Pitch bend tracking. Necessary since QTMA handles
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// pitch bending so differently from MPU401.
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uint16 _pitchbend [16];
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byte _pitchbend_range [16];
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void dispose();
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};
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MidiDriver_QT::MidiDriver_QT() {
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qtNoteAllocator = NULL;
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for (int i = 0; i < 16; i++)
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qtNoteChannel[i] = NULL;
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}
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int MidiDriver_QT::open() {
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ComponentResult qtErr = noErr;
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if (qtNoteAllocator != NULL)
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return MERR_ALREADY_OPEN;
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qtNoteAllocator = OpenDefaultComponent(kNoteAllocatorComponentType, 0);
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if (qtNoteAllocator == NULL)
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goto bail;
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simpleNoteRequest.info.flags = 0;
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simpleNoteRequest.info.polyphony = 11; // simultaneous tones
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simpleNoteRequest.info.typicalPolyphony = 0x00010000;
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qtErr = NAStuffToneDescription(qtNoteAllocator, 1, &simpleNoteRequest.tone);
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if (qtErr != noErr)
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goto bail;
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for (int i = 0; i < 16; i++) {
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qtErr = NANewNoteChannel(qtNoteAllocator, &simpleNoteRequest, &(qtNoteChannel[i]));
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if ((qtErr != noErr) || (qtNoteChannel[i] == NULL))
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goto bail;
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qtErr = NAResetNoteChannel(qtNoteAllocator, qtNoteChannel[i]);
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if (qtErr != noErr)
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goto bail;
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// Channel 10 (i.e. index 9) is the drum channel. Set it up as such.
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// All other channels default to piano.
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qtErr = NASetInstrumentNumber(qtNoteAllocator, qtNoteChannel[i], (i == 9 ? kFirstDrumkit : kFirstGMInstrument) + 1);
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if (qtErr != noErr)
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goto bail;
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}
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return 0;
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bail:
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error("Init QT failed %x %x %d\n", (int)qtNoteAllocator, (int)qtNoteChannel, (int)qtErr);
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dispose();
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return MERR_DEVICE_NOT_AVAILABLE;
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}
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void MidiDriver_QT::close()
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{
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MidiDriver_MPU401::close();
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dispose();
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}
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void MidiDriver_QT::send(uint32 b) {
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MusicMIDIPacket midPacket;
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unsigned char *midiCmd = midPacket.data;
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midPacket.length = 3;
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midiCmd[3] = (b & 0xFF000000) >> 24;
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midiCmd[2] = (b & 0x00FF0000) >> 16;
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midiCmd[1] = (b & 0x0000FF00) >> 8;
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midiCmd[0] = (b & 0x000000FF);
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unsigned char chanID = midiCmd[0] & 0x0F;
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switch (midiCmd[0] & 0xF0) {
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case 0x80: // Note off
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NAPlayNote(qtNoteAllocator, qtNoteChannel[chanID], midiCmd[1], 0);
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break;
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case 0x90: // Note on
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NAPlayNote(qtNoteAllocator, qtNoteChannel[chanID], midiCmd[1], midiCmd[2]);
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break;
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case 0xB0: // Effect
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switch (midiCmd[1]) {
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case 0x01: // Modulation
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NASetController(qtNoteAllocator, qtNoteChannel[chanID], kControllerModulationWheel, midiCmd[2] << 8);
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break;
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case 0x07: // Volume
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NASetController(qtNoteAllocator, qtNoteChannel[chanID], kControllerVolume, midiCmd[2] << 8);
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break;
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case 0x0A: // Pan
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NASetController(qtNoteAllocator, qtNoteChannel[chanID], kControllerPan, (midiCmd[2] << 1) + 256);
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break;
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case 0x40: // Sustain on/off
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NASetController(qtNoteAllocator, qtNoteChannel[chanID], kControllerSustain, midiCmd[2]);
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break;
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case 0x5b: // ext effect depth
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#if !defined(COREAUDIO_REVERB_HACK)
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NASetController(qtNoteAllocator, qtNoteChannel[chanID], kControllerReverb, midiCmd[2] << 8);
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#endif
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break;
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case 0x5d: // chorus depth
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NASetController(qtNoteAllocator, qtNoteChannel[chanID], kControllerChorus, midiCmd[2] << 8);
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break;
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case 0x7b: // mode message all notes off
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// FIXME: For unknown reasons, the following code causes weird
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// troubles. In particular, in the Sam&Max intro, all channel are
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// sent this event. As a result, not only does the music stop - it
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// also never resumes!!! This is very odd.
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/* for (int i = 0; i < 128; i++)
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NAPlayNote(qtNoteAllocator, qtNoteChannel[chanID], i, 0);
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*/
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break;
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case 0x64:
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case 0x65:
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case 0x06:
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case 0x26:
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// pitch bend changes - ignore those for now
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break;
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case 0x12: // Occurs in Scumm games
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case 0x77: // Occurs in Simon2
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case 0x79: // Occurs in Simon1
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// What are these ?!? Ignore it for now
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break;
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default:
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warning("Unknown MIDI effect: %08x", (int)b);
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break;
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}
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break;
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case 0xC0: // Program change
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NASetInstrumentNumber(qtNoteAllocator, qtNoteChannel[chanID], midiCmd[1] + (chanID == 9 ? kFirstDrumkit : kFirstGMInstrument));
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break;
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case 0xE0:{ // Pitch bend
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// QuickTime specifies pitchbend in semitones, using 8.8 fixed point values;
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// but iMuse sends us the pitch bend data as 0-16383. which has to be mapped
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// to +/- 12 semitones. Based on this, we first center the input data, then
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// multiply it by a factor. If all was right, the factor would be 3/8, but for
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// mysterious reasons the actual factor we have to use is more like 1/32 or 3/64.
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// Maybe the QT docs are right, and
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_pitchbend[chanID] = ((uint16) midiCmd[1] | (uint16) (midiCmd[2] << 7));
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long theBend = ((long) _pitchbend[chanID] - 0x2000) * _pitchbend_range[chanID] / 32;
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NASetController(qtNoteAllocator, qtNoteChannel[chanID], kControllerPitchBend, theBend);
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}
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break;
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default:
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error("Unknown Command: %08x", (int)b);
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NASendMIDI(qtNoteAllocator, qtNoteChannel[chanID], &midPacket);
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break;
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}
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}
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void MidiDriver_QT::setPitchBendRange (byte channel, uint range) {
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if (_pitchbend_range[channel] == range)
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return;
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_pitchbend_range[channel] = range;
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long theBend = _pitchbend[channel];
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theBend = (theBend - 0x2000) * range / 32;
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NASetController(qtNoteAllocator, qtNoteChannel[channel], kControllerPitchBend, theBend);
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}
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void MidiDriver_QT::dispose()
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{
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for (int i = 0; i < 16; i++) {
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if (qtNoteChannel[i] != NULL)
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NADisposeNoteChannel(qtNoteAllocator, qtNoteChannel[i]);
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qtNoteChannel[i] = NULL;
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}
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if (qtNoteAllocator != NULL) {
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CloseComponent(qtNoteAllocator);
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qtNoteAllocator = NULL;
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}
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}
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MidiDriver *MidiDriver_QT_create() {
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return new MidiDriver_QT();
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}
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#endif // MACOSX || macintosh
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