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/* ScummVM - Scumm Interpreter
* Copyright (C) 2001-2004 The ScummVM project
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* $Header$
*
*/
#include "stdafx.h"
#include "common/scummsys.h"
#include "common/system.h"
#include "common/file.h"
#include "sound/mixer.h"
#include "simon/simon.h"
namespace Simon {
// MidiParser_S1D is not considered part of the standard
// MidiParser suite, but we still try to mask its details
// and just provide a factory function.
extern MidiParser *MidiParser_createS1D();
// Instrument mapping for MT32 tracks emulated under GM.
static const byte mt32_to_gm[128] = {
// 0 1 2 3 4 5 6 7 8 9 A B C D E F
0, 1, 0, 2, 4, 4, 5, 3, 16, 17, 18, 16, 16, 19, 20, 21, // 0x
6, 6, 6, 7, 7, 7, 8, 112, 62, 62, 63, 63, 38, 38, 39, 39, // 1x
88, 95, 52, 98, 97, 99, 14, 54, 102, 96, 53, 102, 81, 100, 14, 80, // 2x
48, 48, 49, 45, 41, 40, 42, 42, 43, 46, 45, 24, 25, 28, 27, 104, // 3x
32, 32, 34, 33, 36, 37, 35, 35, 79, 73, 72, 72, 74, 75, 64, 65, // 4x
66, 67, 71, 71, 68, 69, 70, 22, 56, 59, 57, 57, 60, 60, 58, 61, // 5x
61, 11, 11, 98, 14, 9, 14, 13, 12, 107, 107, 77, 78, 78, 76, 76, // 6x
47, 117, 127, 118, 118, 116, 115, 119, 115, 112, 55, 124, 123, 0, 14, 117 // 7x
};
MidiPlayer::MidiPlayer(OSystem *system) {
// Since initialize() is called every time the music changes,
// this is where we'll initialize stuff that must persist
// between songs.
_system = system;
_mutex = system->createMutex();
_driver = 0;
_map_mt32_to_gm = false;
_enable_sfx = true;
_current = 0;
_masterVolume = 255;
resetVolumeTable();
_paused = false;
_currentTrack = 255;
_loopTrack = 0;
_queuedTrack = 255;
_loopQueuedTrack = 0;
}
MidiPlayer::~MidiPlayer() {
_system->lockMutex(_mutex);
close();
_system->unlockMutex(_mutex);
_system->deleteMutex(_mutex);
}
int MidiPlayer::open() {
// Don't ever call open without first setting the output driver!
if (!_driver)
return 255;
int ret = _driver->open();
if (ret)
return ret;
_driver->setTimerCallback(this, &onTimer);
return 0;
}
void MidiPlayer::close() {
stop();
// _system->lockMutex (_mutex);
if (_driver)
_driver->close();
_driver = NULL;
clearConstructs();
// _system->unlockMutex (_mutex);
}
void MidiPlayer::send(uint32 b) {
if (!_current)
return;
byte channel = (byte) (b & 0x0F);
if ((b & 0xFFF0) == 0x07B0) {
// Adjust volume changes by master volume.
byte volume = (byte) ((b >> 16) & 0x7F);
_current->volume[channel] = volume;
volume = volume * _masterVolume / 255;
b = (b & 0xFF00FFFF) | (volume << 16);
} else if ((b & 0xF0) == 0xC0 && _map_mt32_to_gm) {
b = (b & 0xFFFF00FF) | (mt32_to_gm[(b >> 8) & 0xFF] << 8);
} else if ((b & 0xFFF0) == 0x007BB0) {
// Only respond to an All Notes Off if this channel
// has already been allocated.
if (!_current->channel[b & 0x0F])
return;
}
if (!_current->channel[channel])
_current->channel[channel] = (channel == 9) ? _driver->getPercussionChannel() : _driver->allocateChannel();
if (_current->channel[channel]) {
if (channel == 9)
_current->channel[9]->volume (_current->volume[9] * _masterVolume / 255);
_current->channel[channel]->send(b);
}
}
void MidiPlayer::metaEvent (byte type, byte *data, uint16 length) {
// Only thing we care about is End of Track.
if (!_current || type != 0x2F) {
return;
} else if (_current == &_sfx) {
clearConstructs(_sfx);
} else if (_loopTrack) {
_current->parser->jumpToTick(0);
} else if (_queuedTrack != 255) {
_currentTrack = 255;
byte destination = _queuedTrack;
_queuedTrack = 255;
_loopTrack = _loopQueuedTrack;
_loopQueuedTrack = false;
// Remember, we're still inside the locked mutex.
// Have to unlock it before calling jump()
// (which locks it itself), and then relock it
// upon returning.
_system->unlockMutex(_mutex);
startTrack (destination);
_system->lockMutex(_mutex);
} else {
stop();
}
}
void MidiPlayer::onTimer (void *data) {
MidiPlayer *p = (MidiPlayer *) data;
Common::StackLock lock(p->_mutex);
if (!p->_paused) {
if (p->_music.parser && p->_currentTrack != 255) {
p->_current = &p->_music;
p->_music.parser->onTimer();
}
}
if (p->_sfx.parser) {
p->_current = &p->_sfx;
p->_sfx.parser->onTimer();
}
p->_current = 0;
}
void MidiPlayer::startTrack (int track) {
if (track == _currentTrack)
return;
if (_music.num_songs > 0) {
if (track >= _music.num_songs)
return;
_system->lockMutex(_mutex);
if (_music.parser) {
_current = &_music;
delete _music.parser;
_current = 0;
_music.parser = 0;
}
MidiParser *parser = MidiParser::createParser_SMF();
parser->property (MidiParser::mpMalformedPitchBends, 1);
parser->setMidiDriver (this);
parser->setTimerRate (_driver->getBaseTempo());
if (!parser->loadMusic (_music.songs[track], _music.song_sizes[track])) {
printf ("Error reading track!\n");
delete parser;
parser = 0;
}
_currentTrack = (byte) track;
_music.parser = parser; // That plugs the power cord into the wall
} else if (_music.parser) {
_system->lockMutex(_mutex);
if (!_music.parser->setTrack(track)) {
_system->unlockMutex(_mutex);
return;
}
_currentTrack = (byte) track;
_current = &_music;
_music.parser->jumpToTick(0);
_current = 0;
}
_system->unlockMutex(_mutex);
}
void MidiPlayer::stop() {
Common::StackLock lock(_mutex);
if (_music.parser) {
_current = &_music;
_music.parser->jumpToTick(0);
}
_current = 0;
_currentTrack = 255;
}
void MidiPlayer::pause (bool b) {
if (_paused == b || !_driver)
return;
_paused = b;
Common::StackLock lock(_mutex);
for (int i = 0; i < 16; ++i) {
if (_music.channel[i])
_music.channel[i]->volume (_paused ? 0 : (_music.volume[i] * _masterVolume / 255));
if (_sfx.channel[i])
_sfx.channel[i]->volume (_paused ? 0 : (_sfx.volume[i] * _masterVolume / 255));
}
}
void MidiPlayer::set_volume (int volume) {
if (volume < 0)
volume = 0;
else if (volume > 255)
volume = 255;
if (_masterVolume == volume)
return;
_masterVolume = volume;
// Now tell all the channels this.
Common::StackLock lock(_mutex);
if (_driver && !_paused) {
for (int i = 0; i < 16; ++i) {
if (_music.channel[i])
_music.channel[i]->volume(_music.volume[i] * _masterVolume / 255);
if (_sfx.channel[i])
_sfx.channel[i]->volume(_sfx.volume[i] * _masterVolume / 255);
}
}
}
void MidiPlayer::set_driver(MidiDriver *md) {
// Don't try to set this more than once.
if (_driver)
return;
_driver = md;
}
void MidiPlayer::mapMT32toGM (bool map) {
Common::StackLock lock(_mutex);
_map_mt32_to_gm = map;
}
void MidiPlayer::setLoop (bool loop) {
Common::StackLock lock(_mutex);
_loopTrack = loop;
}
void MidiPlayer::queueTrack (int track, bool loop) {
_system->lockMutex(_mutex);
if (_currentTrack == 255) {
_system->unlockMutex(_mutex);
setLoop(loop);
startTrack(track);
} else {
_queuedTrack = track;
_loopQueuedTrack = loop;
_system->unlockMutex(_mutex);
}
}
void MidiPlayer::clearConstructs() {
clearConstructs(_music);
clearConstructs(_sfx);
}
void MidiPlayer::clearConstructs(MusicInfo &info) {
int i;
if (info.num_songs > 0) {
for (i = 0; i < info.num_songs; ++i)
free (info.songs[i]);
info.num_songs = 0;
}
if (info.data) {
free(info.data);
info.data = 0;
} // end if
if (info.parser) {
delete info.parser;
info.parser = 0;
}
if (_driver) {
for (i = 0; i < 16; ++i) {
if (info.channel[i]) {
info.channel[i]->allNotesOff();
info.channel[i]->release();
}
}
}
info.clear();
}
void MidiPlayer::resetVolumeTable() {
int i;
for (i = 0; i < 16; ++i) {
_music.volume[i] = _sfx.volume[i] = 127;
if (_driver)
_driver->send (((_masterVolume >> 1) << 16) | 0x7B0 | i);
}
}
static int simon1_gmf_size[] = {
8900, 12166, 2848, 3442, 4034, 4508, 7064, 9730, 6014, 4742, 3138,
6570, 5384, 8909, 6457, 16321, 2742, 8968, 4804, 8442, 7717,
9444, 5800, 1381, 5660, 6684, 2456, 4744, 2455, 1177, 1232,
17256, 5103, 8794, 4884, 16
};
void MidiPlayer::loadSMF (File *in, int song, bool sfx) {
Common::StackLock lock(_mutex);
MusicInfo *p = sfx ? &_sfx : &_music;
clearConstructs (*p);
uint32 startpos = in->pos();
byte header[4];
in->read(header, 4);
bool isGMF = !memcmp (header, "GMF\x1", 4);
in->seek(startpos, SEEK_SET);
uint32 size = in->size() - in->pos();
if (isGMF) {
if (sfx) {
// Multiple GMF resources are stored in the SFX files,
// but each one is referenced by a pointer at the
// beginning of the file. Those pointers can be used
// to determine file size.
in->seek(0, SEEK_SET);
uint16 value = in->readUint16LE() >> 2; // Number of resources
if (song != value - 1) {
in->seek(song * 2 + 2, SEEK_SET);
value = in->readUint16LE();
size = value - startpos;
}
in->seek(startpos, SEEK_SET);
} else if (size >= 64000) {
// For GMF resources not in separate
// files, we're going to have to use
// hardcoded size tables.
size = simon1_gmf_size[song];
}
}
// When allocating space, add 4 bytes in case
// this is a GMF and we have to tack on our own
// End of Track event.
p->data = (byte *) calloc(size + 4, 1);
in->read(p->data, size);
if (!memcmp(p->data, "GMF\x1", 4)) {
// BTW, here's what we know about the GMF header,
// the 7 bytes preceding the actual MIDI events.
// 3 BYTES: 'GMF'
// 1 BYTE : Always seems to be 0x01
// 1 BYTE : Always seems to be 0x00
// 1 BYTE : Ranges from 0x02 to 0x08 (always 0x02 for SFX, though)
// 1 BYTE : Loop control. 0 = no loop, 1 = loop
if (!sfx)
setLoop(p->data[6] != 0);
}
MidiParser *parser = MidiParser::createParser_SMF();
parser->property(MidiParser::mpMalformedPitchBends, 1);
parser->setMidiDriver(this);
parser->setTimerRate(_driver->getBaseTempo());
if (!parser->loadMusic(p->data, size)) {
printf ("Error reading track!\n");
delete parser;
parser = 0;
}
if (!sfx) {
_currentTrack = 255;
resetVolumeTable();
}
p->parser = parser; // That plugs the power cord into the wall
}
void MidiPlayer::loadMultipleSMF (File *in, bool sfx) {
// This is a special case for Simon 2 Windows.
// Instead of having multiple sequences as
// separate tracks in a Type 2 file, simon2win
// has multiple songs, each of which is a Type 1
// file. Thus, preceding the songs is a single
// byte specifying how many songs are coming.
// We need to load ALL the songs and then
// treat them as separate tracks -- for the
// purpose of jumps, anyway.
Common::StackLock lock(_mutex);
MusicInfo *p = sfx ? &_sfx : &_music;
clearConstructs(*p);
p->num_songs = in->readByte();
if (p->num_songs > 16) {
printf ("playMultipleSMF: %d is too many songs to keep track of!\n", (int) p->num_songs);
return;
}
byte i;
for (i = 0; i < p->num_songs; ++i) {
byte buf[5];
uint32 pos = in->pos();
// Make sure there's a MThd
in->read(buf, 4);
if (memcmp (buf, "MThd", 4)) {
printf ("Expected MThd but found '%c%c%c%c' instead!\n", buf[0], buf[1], buf[2], buf[3]);
return;
}
in->seek(in->readUint32BE() + in->pos(), SEEK_SET);
// Now skip all the MTrk blocks
while (true) {
in->read (buf, 4);
if (memcmp(buf, "MTrk", 4))
break;
in->seek(in->readUint32BE() + in->pos(), SEEK_SET);
}
uint32 pos2 = in->pos() - 4;
uint32 size = pos2 - pos;
p->songs[i] = (byte *) calloc(size, 1);
in->seek(pos, SEEK_SET);
in->read(p->songs[i], size);
p->song_sizes[i] = size;
}
if (!sfx) {
_currentTrack = 255;
resetVolumeTable();
}
}
void MidiPlayer::loadXMIDI(File *in, bool sfx) {
Common::StackLock lock(_mutex);
MusicInfo *p = sfx ? &_sfx : &_music;
clearConstructs(*p);
char buf[4];
uint32 pos = in->pos();
uint32 size = 4;
in->read(buf, 4);
if (!memcmp(buf, "FORM", 4)) {
int i;
for (i = 0; i < 16; ++i) {
if (!memcmp(buf, "CAT ", 4))
break;
size += 2;
memcpy(buf, &buf[2], 2);
in->read(&buf[2], 2);
}
if (memcmp(buf, "CAT ", 4)) {
warning("Could not find 'CAT ' tag to determine resource size!");
return;
}
size += 4 + in->readUint32BE();
in->seek(pos, 0);
p->data = (byte *) calloc(size, 1);
in->read(p->data, size);
} else {
warning("Expected 'FORM' tag but found '%c%c%c%c' instead!", buf[0], buf[1], buf[2], buf[3]);
return;
}
MidiParser *parser = MidiParser::createParser_XMIDI();
parser->setMidiDriver(this);
parser->setTimerRate(_driver->getBaseTempo());
if (!parser->loadMusic(p->data, size)) {
warning("Error reading track!");
delete parser;
parser = 0;
}
if (!sfx) {
_currentTrack = 255;
resetVolumeTable();
}
p->parser = parser; // That plugs the power cord into the wall
}
void MidiPlayer::loadS1D (File *in, bool sfx) {
Common::StackLock lock(_mutex);
MusicInfo *p = sfx ? &_sfx : &_music;
clearConstructs(*p);
uint16 size = in->readUint16LE();
if (size != in->size() - 2) {
warning("Size mismatch in simon1demo MUS file (%ld versus reported %d)", (long) in->size() - 2, (int) size);
return;
}
p->data = (byte *) calloc(size, 1);
in->read(p->data, size);
MidiParser *parser = MidiParser_createS1D();
parser->setMidiDriver(this);
parser->setTimerRate(_driver->getBaseTempo());
if (!parser->loadMusic(p->data, size)) {
warning("Error reading track!");
delete parser;
parser = 0;
}
if (!sfx) {
_currentTrack = 255;
resetVolumeTable();
}
p->parser = parser; // That plugs the power cord into the wall
}
} // End of namespace Simon
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