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|
/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
#include "sci/engine/kernel.h"
#include "sci/engine/state.h"
#include "sci/sound/midiparser_sci.h"
#include "sci/sound/drivers/mididriver.h"
namespace Sci {
static const int nMidiParams[] = { 2, 2, 2, 2, 1, 1, 2, 0 };
enum SciMidiCommands {
kSetSignalLoop = 0x7F,
kEndOfTrack = 0xFC,
kSetReverb = 0x50,
kMidiHold = 0x52,
kUpdateCue = 0x60,
kResetOnPause = 0x4C
};
// MidiParser_SCI
//
MidiParser_SCI::MidiParser_SCI(SciVersion soundVersion, SciMusic *music) :
MidiParser() {
_soundVersion = soundVersion;
_music = music;
_mixedData = NULL;
// mididata contains delta in 1/60th second
// values of ppqn and tempo are found experimentally and may be wrong
_ppqn = 1;
setTempo(16667);
_masterVolume = 15;
_volume = 127;
_resetOnPause = false;
_pSnd = 0;
}
MidiParser_SCI::~MidiParser_SCI() {
unloadMusic();
// we do this, so that MidiParser won't be able to call his own ::allNotesOff()
// this one would affect all channels and we can't let that happen
_driver = 0;
}
void MidiParser_SCI::mainThreadBegin() {
_mainThreadCalled = true;
}
void MidiParser_SCI::mainThreadEnd() {
_mainThreadCalled = false;
}
bool MidiParser_SCI::loadMusic(SoundResource::Track *track, MusicEntry *psnd, int channelFilterMask, SciVersion soundVersion) {
unloadMusic();
_track = track;
_pSnd = psnd;
_soundVersion = soundVersion;
for (int i = 0; i < 16; i++) {
_channelUsed[i] = false;
_channelRemap[i] = -1;
_channelMuted[i] = false;
_channelVolume[i] = 127;
}
_channelRemap[9] = 9; // never map channel 9, because that's used for percussion
_channelRemap[15] = 15; // never map channel 15, because thats used by sierra internally
if (channelFilterMask) {
// SCI0 only has 1 data stream, but we need to filter out channels depending on music hardware selection
midiFilterChannels(channelFilterMask);
} else {
midiMixChannels();
}
_numTracks = 1;
_tracks[0] = _mixedData;
if (_pSnd)
setTrack(0);
_loopTick = 0;
return true;
}
byte MidiParser_SCI::midiGetNextChannel(long ticker) {
byte curr = 0xFF;
long closest = ticker + 1000000, next = 0;
for (int i = 0; i < _track->channelCount; i++) {
if (_track->channels[i].time == -1) // channel ended
continue;
SoundResource::Channel *curChannel = &_track->channels[i];
if (curChannel->curPos >= curChannel->size)
continue;
next = curChannel->data[curChannel->curPos]; // when the next event should occur
if (next == 0xF8) // 0xF8 means 240 ticks delay
next = 240;
next += _track->channels[i].time;
if (next < closest) {
curr = i;
closest = next;
}
}
return curr;
}
byte *MidiParser_SCI::midiMixChannels() {
int totalSize = 0;
for (int i = 0; i < _track->channelCount; i++) {
_track->channels[i].time = 0;
_track->channels[i].prev = 0;
_track->channels[i].curPos = 0;
totalSize += _track->channels[i].size;
}
byte *outData = new byte[totalSize * 2]; // FIXME: creates overhead and still may be not enough to hold all data
_mixedData = outData;
long ticker = 0;
byte channelNr, curDelta;
byte midiCommand = 0, midiParam, globalPrev = 0;
long newDelta;
SoundResource::Channel *channel;
while ((channelNr = midiGetNextChannel(ticker)) != 0xFF) { // there is still an active channel
channel = &_track->channels[channelNr];
curDelta = channel->data[channel->curPos++];
channel->time += (curDelta == 0xF8 ? 240 : curDelta); // when the command is supposed to occur
if (curDelta == 0xF8)
continue;
newDelta = channel->time - ticker;
ticker += newDelta;
midiCommand = channel->data[channel->curPos++];
if (midiCommand != kEndOfTrack) {
// Write delta
while (newDelta > 240) {
*outData++ = 0xF8;
newDelta -= 240;
}
*outData++ = (byte)newDelta;
}
// Write command
switch (midiCommand) {
case 0xF0: // sysEx
*outData++ = midiCommand;
do {
midiParam = channel->data[channel->curPos++];
*outData++ = midiParam;
} while (midiParam != 0xF7);
break;
case kEndOfTrack: // end of channel
channel->time = -1;
break;
default: // MIDI command
if (midiCommand & 0x80) {
midiParam = channel->data[channel->curPos++];
} else {// running status
midiParam = midiCommand;
midiCommand = channel->prev;
}
// remember which channel got used for channel remapping
byte midiChannel = midiCommand & 0xF;
_channelUsed[midiChannel] = true;
if (midiCommand != globalPrev)
*outData++ = midiCommand;
*outData++ = midiParam;
if (nMidiParams[(midiCommand >> 4) - 8] == 2)
*outData++ = channel->data[channel->curPos++];
channel->prev = midiCommand;
globalPrev = midiCommand;
}
}
// Insert stop event
*outData++ = 0; // Delta
*outData++ = 0xFF; // Meta event
*outData++ = 0x2F; // End of track (EOT)
*outData++ = 0x00;
*outData++ = 0x00;
return _mixedData;
}
// This is used for SCI0 sound-data. SCI0 only has one stream that may
// contain several channels and according to output device we remove
// certain channels from that data.
byte *MidiParser_SCI::midiFilterChannels(int channelMask) {
SoundResource::Channel *channel = &_track->channels[0];
byte *channelData = channel->data;
byte *channelDataEnd = channel->data + channel->size;
byte *outData = new byte[channel->size + 5];
byte curChannel = 15, curByte, curDelta;
byte command = 0, lastCommand = 0;
int delta = 0;
int midiParamCount = 0;
bool containsMidiData = false;
_mixedData = outData;
while (channelData < channelDataEnd) {
curDelta = *channelData++;
if (curDelta == 0xF8) {
delta += 240;
continue;
}
delta += curDelta;
curByte = *channelData++;
switch (curByte) {
case 0xF0: // sysEx
case kEndOfTrack: // end of channel
command = curByte;
curChannel = 15;
break;
default:
if (curByte & 0x80) {
command = curByte;
curChannel = command & 0x0F;
midiParamCount = nMidiParams[(command >> 4) - 8];
}
}
if ((1 << curChannel) & channelMask) {
if (curChannel != 0xF)
containsMidiData = true;
// Write delta
while (delta > 240) {
*outData++ = 0xF8;
delta -= 240;
}
*outData++ = (byte)delta;
delta = 0;
// Write command
switch (command) {
case 0xF0: // sysEx
*outData++ = command;
do {
curByte = *channelData++;
*outData++ = curByte; // out
} while (curByte != 0xF7);
lastCommand = command;
break;
case kEndOfTrack: // end of channel
break;
default: // MIDI command
// remember which channel got used for channel remapping
byte midiChannel = command & 0xF;
_channelUsed[midiChannel] = true;
if (lastCommand != command) {
*outData++ = command;
lastCommand = command;
}
if (midiParamCount > 0) {
if (curByte & 0x80)
*outData++ = *channelData++;
else
*outData++ = curByte;
}
if (midiParamCount > 1) {
*outData++ = *channelData++;
}
}
} else {
if (curByte & 0x80)
channelData += midiParamCount;
else
channelData += midiParamCount - 1;
}
}
// Insert stop event
// (Delta is already output above)
*outData++ = 0xFF; // Meta event
*outData++ = 0x2F; // End of track (EOT)
*outData++ = 0x00;
*outData++ = 0x00;
// This occurs in the music tracks of LB1 Amiga, when using the MT-32
// driver (bug #3297881)
if (!containsMidiData)
warning("MIDI parser: the requested SCI0 sound has no MIDI note data for the currently selected sound driver");
return _mixedData;
}
// This will get called right before actual playing and will try to own the used channels
void MidiParser_SCI::tryToOwnChannels() {
// We don't have SciMusic in case debug command show_instruments is used
if (!_music)
return;
for (int curChannel = 0; curChannel < 15; curChannel++) {
if (_channelUsed[curChannel]) {
if (_channelRemap[curChannel] == -1) {
_channelRemap[curChannel] = _music->tryToOwnChannel(_pSnd, curChannel);
}
}
}
}
void MidiParser_SCI::lostChannels() {
for (int curChannel = 0; curChannel < 15; curChannel++)
if ((_channelUsed[curChannel]) && (curChannel != 9))
_channelRemap[curChannel] = -1;
}
void MidiParser_SCI::sendInitCommands() {
// reset our "global" volume and channel volumes
_volume = 127;
for (int i = 0; i < 16; i++)
_channelVolume[i] = 127;
// Set initial voice count
if (_pSnd) {
if (_soundVersion <= SCI_VERSION_0_LATE) {
for (int i = 0; i < 15; ++i) {
byte voiceCount = 0;
if (_channelUsed[i]) {
voiceCount = _pSnd->soundRes->getInitialVoiceCount(i);
sendToDriver(0xB0 | i, 0x4B, voiceCount);
}
}
}
}
// Reset all the parameters of the channels used by this song
for (int i = 0; i < 16; ++i) {
if (_channelUsed[i]) {
sendToDriver(0xB0 | i, 0x07, 127); // Reset volume to maximum
sendToDriver(0xB0 | i, 0x0A, 64); // Reset panning to center
sendToDriver(0xB0 | i, 0x40, 0); // Reset hold pedal to none
sendToDriver(0xB0 | i, 0x4E, 0); // Reset velocity to none
sendToDriver(0xE0 | i, 0, 64); // Reset pitch wheel to center
}
}
}
void MidiParser_SCI::unloadMusic() {
if (_pSnd) {
resetTracking();
allNotesOff();
}
_numTracks = 0;
_activeTrack = 255;
_resetOnPause = false;
if (_mixedData) {
delete[] _mixedData;
_mixedData = NULL;
}
}
// this is used for scripts sending midi commands to us. we verify in that case that the channel is actually
// used, so that channel remapping will work as well and then send them on
void MidiParser_SCI::sendFromScriptToDriver(uint32 midi) {
byte midiChannel = midi & 0xf;
if (!_channelUsed[midiChannel]) {
// trying to send to an unused channel
// this happens for cmdSendMidi at least in sq1vga right at the start, it's a script issue
return;
}
if (_channelRemap[midiChannel] == -1) {
// trying to send to an unmapped channel
// this happens for cmdSendMidi at least in sq1vga right at the start, scripts are pausing the sound
// and then sending manually. it's a script issue
return;
}
sendToDriver(midi);
}
void MidiParser_SCI::sendToDriver(uint32 midi) {
byte midiChannel = midi & 0xf;
if ((midi & 0xFFF0) == 0x4EB0) {
// this is channel mute only for sci1
// it's velocity control for sci0
if (_soundVersion >= SCI_VERSION_1_EARLY) {
_channelMuted[midiChannel] = midi & 0xFF0000 ? true : false;
return; // don't send this to driver at all
}
}
// Is channel muted? if so, don't send command
if (_channelMuted[midiChannel])
return;
if ((midi & 0xFFF0) == 0x07B0) {
// someone trying to set channel volume?
int channelVolume = (midi >> 16) & 0xFF;
// Remember, if we need to set it ourselves
_channelVolume[midiChannel] = channelVolume;
// Adjust volume accordingly to current local volume
channelVolume = channelVolume * _volume / 127;
midi = (midi & 0xFFF0) | ((channelVolume & 0xFF) << 16);
}
// Channel remapping
int16 realChannel = _channelRemap[midiChannel];
if (realChannel == -1)
return;
midi = (midi & 0xFFFFFFF0) | realChannel;
if (_mainThreadCalled)
_music->putMidiCommandInQueue(midi);
else
_driver->send(midi);
}
void MidiParser_SCI::parseNextEvent(EventInfo &info) {
info.start = _position._playPos;
info.delta = 0;
while (*_position._playPos == 0xF8) {
info.delta += 240;
_position._playPos++;
}
info.delta += *(_position._playPos++);
// Process the next info.
if ((_position._playPos[0] & 0xF0) >= 0x80)
info.event = *(_position._playPos++);
else
info.event = _position._runningStatus;
if (info.event < 0x80)
return;
_position._runningStatus = info.event;
switch (info.command()) {
case 0xC:
info.basic.param1 = *(_position._playPos++);
info.basic.param2 = 0;
break;
case 0xD:
info.basic.param1 = *(_position._playPos++);
info.basic.param2 = 0;
break;
case 0xB:
info.basic.param1 = *(_position._playPos++);
info.basic.param2 = *(_position._playPos++);
info.length = 0;
break;
case 0x8:
case 0x9:
case 0xA:
case 0xE:
info.basic.param1 = *(_position._playPos++);
info.basic.param2 = *(_position._playPos++);
if (info.command() == 0x9 && info.basic.param2 == 0)
info.event = info.channel() | 0x80;
info.length = 0;
break;
case 0xF: // System Common, Meta or SysEx event
switch (info.event & 0x0F) {
case 0x2: // Song Position Pointer
info.basic.param1 = *(_position._playPos++);
info.basic.param2 = *(_position._playPos++);
break;
case 0x3: // Song Select
info.basic.param1 = *(_position._playPos++);
info.basic.param2 = 0;
break;
case 0x6:
case 0x8:
case 0xA:
case 0xB:
case 0xC:
case 0xE:
info.basic.param1 = info.basic.param2 = 0;
break;
case 0x0: // SysEx
info.length = readVLQ(_position._playPos);
info.ext.data = _position._playPos;
_position._playPos += info.length;
break;
case 0xF: // META event
info.ext.type = *(_position._playPos++);
info.length = readVLQ(_position._playPos);
info.ext.data = _position._playPos;
_position._playPos += info.length;
break;
default:
warning(
"MidiParser_SCI::parseNextEvent: Unsupported event code %x",
info.event);
} // // System Common, Meta or SysEx event
}// switch (info.command())
}
void MidiParser_SCI::processEvent(const EventInfo &info, bool fireEvents) {
if (!fireEvents) {
// We don't do any processing that should be done while skipping events
MidiParser::processEvent(info, fireEvents);
return;
}
switch (info.command()) {
case 0xC:
if (info.channel() == 0xF) {// SCI special case
if (info.basic.param1 != kSetSignalLoop) {
// At least in kq5/french&mac the first scene in the intro has
// a song that sets signal to 4 immediately on tick 0. Signal
// isn't set at that point by sierra sci and it would cause the
// castle daventry text to get immediately removed, so we
// currently filter it. Sierra SCI ignores them as well at that
// time. However, this filtering should only be performed for
// SCI1 and newer games. Signalling is done differently in SCI0
// though, so ignoring these signals in SCI0 games will result
// in glitches (e.g. the intro of LB1 Amiga gets stuck - bug
// #3297883). Refer to MusicEntry::setSignal() in sound/music.cpp.
// FIXME: SSCI doesn't start playing at the very beginning
// of the stream, but at a fixed location a few commands later.
// That is probably why this signal isn't triggered
// immediately there.
if (_soundVersion <= SCI_VERSION_0_LATE || _position._playTick) {
if (!_jumpingToTick) {
_pSnd->setSignal(info.basic.param1);
debugC(4, kDebugLevelSound, "signal %04x", info.basic.param1);
}
}
} else {
_loopTick = _position._playTick;
}
// Done with this event.
return;
}
// Break to let parent handle the rest.
break;
case 0xB:
// Reference for some events:
// http://wiki.scummvm.org/index.php/SCI/Specifications/Sound/SCI0_Resource_Format#Status_Reference
// Handle common special events
switch (info.basic.param1) {
case kSetReverb:
if (info.basic.param2 == 127) // Set global reverb instead
_pSnd->reverb = _music->getGlobalReverb();
else
_pSnd->reverb = info.basic.param2;
((MidiPlayer *)_driver)->setReverb(_pSnd->reverb);
break;
default:
break;
}
// Handle events sent to the SCI special channel (15)
if (info.channel() == 0xF) {
switch (info.basic.param1) {
case kSetReverb:
// Already handled above
return;
case kMidiHold:
// Check if the hold ID marker is the same as the hold ID
// marker set for that song by cmdSetSoundHold.
// If it is, loop back, but don't stop notes when jumping.
if (info.basic.param2 == _pSnd->hold) {
jumpToTick(_loopTick, false, false);
// Done with this event.
return;
}
return;
case kUpdateCue:
if (!_jumpingToTick) {
int inc;
switch (_soundVersion) {
case SCI_VERSION_0_EARLY:
case SCI_VERSION_0_LATE:
inc = info.basic.param2;
break;
case SCI_VERSION_1_EARLY:
case SCI_VERSION_1_LATE:
case SCI_VERSION_2_1:
inc = 1;
break;
default:
error("unsupported _soundVersion");
}
_pSnd->dataInc += inc;
debugC(4, kDebugLevelSound, "datainc %04x", inc);
}
return;
case kResetOnPause:
_resetOnPause = info.basic.param2;
return;
// Unhandled SCI commands
case 0x46: // LSL3 - binoculars
case 0x61: // Iceman (AdLib?)
case 0x73: // Hoyle
case 0xD1: // KQ4, when riding the unicorn
// Obscure SCI commands - ignored
return;
// Standard MIDI commands
case 0x01: // mod wheel
case 0x04: // foot controller
case 0x07: // channel volume
case 0x0A: // pan
case 0x0B: // expression
case 0x40: // sustain
case 0x79: // reset all
case 0x7B: // notes off
// These are all handled by the music driver, so ignore them
break;
case 0x4B: // voice mapping
// TODO: is any support for this needed at the MIDI parser level?
warning("Unhanded SCI MIDI command 0x%x - voice mapping (parameter %d)", info.basic.param1, info.basic.param2);
return;
default:
warning("Unhandled SCI MIDI command 0x%x (parameter %d)", info.basic.param1, info.basic.param2);
return;
}
}
// Break to let parent handle the rest.
break;
case 0xF: // META event
if (info.ext.type == 0x2F) {// end of track reached
if (_pSnd->loop)
_pSnd->loop--;
// QFG3 abuses the hold flag. Its scripts call kDoSoundSetHold,
// but sometimes there's no hold marker in the associated songs
// (e.g. song 110, during the intro). The original interpreter
// treats this case as an infinite loop (bug #3311911).
if (_pSnd->loop || _pSnd->hold > 0) {
jumpToTick(_loopTick);
// Done with this event.
return;
} else {
_pSnd->status = kSoundStopped;
_pSnd->setSignal(SIGNAL_OFFSET);
debugC(4, kDebugLevelSound, "signal EOT");
}
}
// Break to let parent handle the rest.
break;
default:
// Break to let parent handle the rest.
break;
}
// Let parent handle the rest
MidiParser::processEvent(info, fireEvents);
}
byte MidiParser_SCI::getSongReverb() {
assert(_track);
if (_soundVersion >= SCI_VERSION_1_EARLY) {
for (int i = 0; i < _track->channelCount; i++) {
SoundResource::Channel &channel = _track->channels[i];
// Peek ahead in the control channel to get the default reverb setting
if (channel.number == 15 && channel.size >= 7)
return channel.data[6];
}
}
return 127;
}
void MidiParser_SCI::allNotesOff() {
if (!_driver)
return;
int i, j;
// Turn off all active notes
for (i = 0; i < 128; ++i) {
for (j = 0; j < 16; ++j) {
if ((_activeNotes[i] & (1 << j)) && (_channelRemap[j] != -1)){
sendToDriver(0x80 | j, i, 0);
}
}
}
// Turn off all hanging notes
for (i = 0; i < ARRAYSIZE(_hangingNotes); i++) {
byte midiChannel = _hangingNotes[i].channel;
if ((_hangingNotes[i].timeLeft) && (_channelRemap[midiChannel] != -1)) {
sendToDriver(0x80 | midiChannel, _hangingNotes[i].note, 0);
_hangingNotes[i].timeLeft = 0;
}
}
_hangingNotesCount = 0;
// To be sure, send an "All Note Off" event (but not all MIDI devices
// support this...).
for (i = 0; i < 16; ++i) {
if (_channelRemap[i] != -1) {
sendToDriver(0xB0 | i, 0x7b, 0); // All notes off
sendToDriver(0xB0 | i, 0x40, 0); // Also send a sustain off event (bug #3116608)
}
}
memset(_activeNotes, 0, sizeof(_activeNotes));
}
void MidiParser_SCI::setMasterVolume(byte masterVolume) {
assert(masterVolume <= MUSIC_MASTERVOLUME_MAX);
_masterVolume = masterVolume;
switch (_soundVersion) {
case SCI_VERSION_0_EARLY:
case SCI_VERSION_0_LATE:
// update driver master volume
setVolume(_volume);
break;
case SCI_VERSION_1_EARLY:
case SCI_VERSION_1_LATE:
case SCI_VERSION_2_1:
// directly set master volume (global volume is merged with channel volumes)
((MidiPlayer *)_driver)->setVolume(masterVolume);
break;
default:
error("MidiParser_SCI::setVolume: Unsupported soundVersion");
}
}
void MidiParser_SCI::setVolume(byte volume) {
assert(volume <= MUSIC_VOLUME_MAX);
_volume = volume;
switch (_soundVersion) {
case SCI_VERSION_0_EARLY:
case SCI_VERSION_0_LATE: {
// SCI0 adlib driver doesn't support channel volumes, so we need to go this way
int16 globalVolume = _volume * _masterVolume / MUSIC_VOLUME_MAX;
((MidiPlayer *)_driver)->setVolume(globalVolume);
break;
}
case SCI_VERSION_1_EARLY:
case SCI_VERSION_1_LATE:
case SCI_VERSION_2_1:
// Send previous channel volumes again to actually update the volume
for (int i = 0; i < 15; i++)
if (_channelRemap[i] != -1)
sendToDriver(0xB0 + i, 7, _channelVolume[i]);
break;
default:
error("MidiParser_SCI::setVolume: Unsupported soundVersion");
}
}
} // End of namespace Sci
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