scummvm/engines/sci/sound/midiparser_sci.cpp
athrxx 037eec3144 SCI: implement SCI0 midi driver track initialization
I put this in an separate commit to make it easier to review/revert. I've tried to make this as minimum invasive as possible. That's why I put this in place of the former call to onNewSound().

SCI_0_LATE sound drivers (probably also SCI_0_EARLY, but I don't know that) do some midi track initialization, mostly resetting certain values and assigning voices (hardware channels) to midi parts. The information for this comes from the track header.

The SCI0 version of the PC-98 sound driver relies on this code. The driver checks the channel flags with two different masks and assigns different sound channel types accordingly. This can't be done with the 0x4B event. Using the 0x4B event is sort of counter intuitive anyway, since only some of the SCI0 drivers even support that event.

It seems that the only driver making use of onNewSound() was MT-32. I've adapted the driver to my changes, although I am quite sure that the sound will be unaffected. The only thing that the MT-32 driver does with the header information is checking whether a midi part should play or not and assign exactly one timbre (with exactly the same number) to that part if required.
2019-04-02 20:45:35 +03:00

959 lines
27 KiB
C++

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#include "sci/sci.h"
#include "sci/engine/state.h"
#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;
// 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;
_mainThreadCalled = false;
resetStateTracking();
}
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() {
assert(!_mainThreadCalled);
_mainThreadCalled = true;
}
void MidiParser_SCI::mainThreadEnd() {
assert(_mainThreadCalled);
_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;
_channelMuted[i] = false;
_channelVolume[i] = 127;
if (_soundVersion <= SCI_VERSION_0_LATE)
_channelRemap[i] = i;
else
_channelRemap[i] = -1;
}
// FIXME: SSCI does not always start playing a track at the first byte.
// By default it skips 10 (or 13?) bytes containing prio/voices, patch,
// volume, pan commands in fixed locations, and possibly a signal
// in channel 15. We should initialize state tracking to those values
// so that they automatically get set up properly when the channels get
// mapped. See also the related FIXME in MidiParser_SCI::processEvent.
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] = const_cast<byte *>(_mixedData->data());
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->data.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;
}
static inline bool validateNextRead(const SoundResource::Channel *channel) {
if (channel->data.size() <= channel->curPos) {
warning("Unexpected end of %s. Music may sound wrong due to game resource corruption", channel->data.name().c_str());
return false;
}
return true;
}
void 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].data.size();
}
SciSpan<byte> outData = _mixedData->allocate(totalSize * 2, Common::String::format("mixed sound.%d", _pSnd ? _pSnd->resourceId : -1)); // FIXME: creates overhead and still may be not enough to hold all data
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];
if (!validateNextRead(channel))
goto end;
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;
if (!validateNextRead(channel))
goto end;
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 {
if (!validateNextRead(channel))
goto end;
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) {
if (!validateNextRead(channel))
goto end;
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) {
if (!validateNextRead(channel))
goto end;
*outData++ = channel->data[channel->curPos++];
}
channel->prev = midiCommand;
globalPrev = midiCommand;
}
}
end:
// Insert stop event
*outData++ = 0; // Delta
*outData++ = 0xFF; // Meta event
*outData++ = 0x2F; // End of track (EOT)
*outData++ = 0x00;
*outData++ = 0x00;
}
static inline bool validateNextRead(const SciSpan<const byte> &channelData, const SciSpan<const byte>::size_type size = 1) {
if (channelData.size() < size) {
warning("Unexpected end of %s. Music may sound wrong due to game resource corruption", channelData.name().c_str());
return false;
}
return true;
}
// 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.
void MidiParser_SCI::midiFilterChannels(int channelMask) {
SoundResource::Channel *channel = &_track->channels[0];
SciSpan<const byte> channelData = channel->data;
byte curChannel = 15, curByte, curDelta;
byte command = 0, lastCommand = 0;
int delta = 0;
int midiParamCount = 0;
bool containsMidiData = false;
SciSpan<byte> outData = _mixedData->allocate(channel->data.size() + 5, Common::String::format("filtered %s", channel->data.name().c_str()));
while (channelData.size()) {
if (!validateNextRead(channelData))
goto end;
curDelta = *channelData++;
if (curDelta == 0xF8) {
delta += 240;
continue;
}
delta += curDelta;
if (!validateNextRead(channelData))
goto end;
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 {
if (!validateNextRead(channelData))
goto end;
curByte = *channelData++;
*outData++ = curByte; // out
} while (curByte != 0xF7);
lastCommand = command;
break;
case kEndOfTrack: // end of channel
// At least KQ4 sound 104 has a doubled kEndOfTrack marker at
// the end of the file, which breaks filtering
if (channelData.size() < 2)
goto end;
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) {
if (!validateNextRead(channelData))
goto end;
*outData++ = *channelData++;
} else
*outData++ = curByte;
}
if (midiParamCount > 1) {
if (!validateNextRead(channelData))
goto end;
*outData++ = *channelData++;
}
}
} else {
int count = midiParamCount - 1;
if (curByte & 0x80)
++count;
if (!validateNextRead(channelData, count))
goto end;
channelData += count;
}
}
end:
// 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");
}
void MidiParser_SCI::resetStateTracking() {
for (int i = 0; i < 16; ++i) {
ChannelState &s = _channelState[i];
s._modWheel = 0;
s._pan = 64;
s._patch = 0; // TODO: Initialize properly (from data in LoadMusic?)
s._note = -1;
s._sustain = false;
s._pitchWheel = 0x2000;
s._voices = 0;
_channelVolume[i] = 127;
}
}
void MidiParser_SCI::sendInitCommands() {
resetStateTracking();
// reset our "global" volume
_volume = 127;
// Set initial voice count
if (_pSnd) {
if (_soundVersion <= SCI_VERSION_0_LATE) {
// Send header data to SCI0 sound drivers. The driver function which parses the header (opcode 3)
// seems to be implemented at least in all SCI0_LATE drivers. The things that the individual drivers
// do in that init function varies.
if (_track->header.byteSize())
static_cast<MidiPlayer *>(_driver)->initTrack(_track->header);
} else {
for (int i = 0; i < _track->channelCount; ++i) {
byte voiceCount = _track->channels[i].poly;
byte num = _track->channels[i].number;
// TODO: Should we skip the control channel?
sendToDriver(0xB0 | num, 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;
_mixedData.clear();
}
// 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;
}
sendToDriver(midi);
}
void MidiParser_SCI::sendToDriver(uint32 midi) {
// State tracking
trackState(midi);
if ((midi & 0xFFF0) == 0x4EB0 && _soundVersion >= SCI_VERSION_1_EARLY) {
// Mute. Handled in trackState().
// CHECKME: Should we send this on to the driver?
return;
}
if ((midi & 0xFFF0) == 0x07B0) {
// someone trying to set channel volume?
int channelVolume = (midi >> 16) & 0xFF;
// Adjust volume accordingly to current local volume
channelVolume = channelVolume * _volume / 127;
midi = (midi & 0xFFFF) | ((channelVolume & 0xFF) << 16);
}
// Channel remapping
byte midiChannel = midi & 0xf;
int16 realChannel = _channelRemap[midiChannel];
if (realChannel == -1)
return;
midi = (midi & 0xFFFFFFF0) | realChannel;
sendToDriver_raw(midi);
}
void MidiParser_SCI::sendToDriver_raw(uint32 midi) {
if (_mainThreadCalled)
_music->putMidiCommandInQueue(midi);
else
_driver->send(midi);
}
void MidiParser_SCI::trackState(uint32 b) {
// We keep track of most of the state of a midi channel, so we can
// at any time reset the device to the current state, even if the
// channel has been temporarily disabled due to remapping.
byte command = b & 0xf0;
byte channel = b & 0xf;
byte op1 = (b >> 8) & 0x7f;
byte op2 = (b >> 16) & 0x7f;
ChannelState &s = _channelState[channel];
switch (command) {
case 0x90:
if (op2 != 0) {
// note on
s._note = op1;
break;
}
// else, fall-through
case 0x80:
// note off
if (s._note == op1)
s._note = -1;
break;
case 0xB0:
// control change
switch (op1) {
case 0x01: // mod wheel
s._modWheel = op2;
break;
case 0x07: // channel volume
_channelVolume[channel] = op2;
break;
case 0x0A: // pan
s._pan = op2;
break;
case 0x40: // sustain
s._sustain = (op2 != 0);
break;
case 0x4B: // voices
if (s._voices != op2) {
// CHECKME: Should we directly call remapChannels() if _mainThreadCalled?
debugC(2, kDebugLevelSound, "Dynamic voice change (%d to %d)", s._voices, op2);
_music->needsRemap();
}
s._voices = op2;
_pSnd->_chan[channel]._voices = op2; // Also sync our MusicEntry
break;
case 0x4E: // mute
// This is channel mute only for sci1.
// (It's velocity control for sci0, but we don't need state in sci0)
if (_soundVersion > SCI_VERSION_1_EARLY) {
// FIXME: mute is a level, not a bool, in some SCI versions
bool m = op2;
if (_pSnd->_chan[channel]._mute != m) {
_pSnd->_chan[channel]._mute = m;
// CHECKME: Should we directly call remapChannels() if _mainThreadCalled?
_music->needsRemap();
debugC(2, kDebugLevelSound, "Dynamic mute change (arg = %d, mainThread = %d)", m, _mainThreadCalled);
}
}
break;
default:
break;
}
break;
case 0xC0:
// program change
s._patch = op1;
break;
case 0xE0:
// pitchwheel
s._pitchWheel = (op2 << 7) | op1;
break;
default:
break;
}
}
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) {
// NoteOn with param2==0 is a NoteOff
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())
}
bool MidiParser_SCI::processEvent(const EventInfo &info, bool fireEvents) {
if (!fireEvents) {
// We don't do any processing that should be done while skipping events
return MidiParser::processEvent(info, fireEvents);
}
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.
bool skipSignal = false;
if (_soundVersion >= SCI_VERSION_1_EARLY) {
if (!_position._playTick) {
skipSignal = true;
switch (g_sci->getGameId()) {
case GID_ECOQUEST2:
// In Eco Quest 2 room 530 - gonzales is supposed to dance
// WORKAROUND: we need to signal in this case on tick 0
// this whole issue is complicated and can only be properly fixed by
// changing the whole parser to a per-channel parser. SSCI seems to
// start each channel at offset 13 (may be 10 for us) and only
// starting at offset 0 when the music loops to the initial position.
if (g_sci->getEngineState()->currentRoomNumber() == 530)
skipSignal = false;
break;
#ifdef ENABLE_SCI32
case GID_KQ7:
if (g_sci->getEngineState()->currentRoomNumber() == 6050) {
skipSignal = false;
}
break;
#endif
default:
break;
}
}
}
if (!skipSignal) {
if (!_jumpingToTick) {
_pSnd->setSignal(info.basic.param1);
debugC(4, kDebugLevelSound, "signal %04x", info.basic.param1);
}
}
} else {
_loopTick = _position._playTick;
}
// Done with this event.
return true;
}
// Break to let parent handle the rest.
break;
case 0xB:
// Reference for some events:
// https://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 true;
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 true;
}
return true;
case kUpdateCue:
if (!_jumpingToTick) {
int inc;
if (_soundVersion <= SCI_VERSION_0_LATE) {
inc = info.basic.param2;
} else if (_soundVersion >= SCI_VERSION_1_EARLY && _soundVersion <= SCI_VERSION_2_1_MIDDLE) {
inc = 1;
} else {
error("Unsupported _soundVersion %s", getSciVersionDesc(_soundVersion));
}
_pSnd->dataInc += inc;
debugC(4, kDebugLevelSound, "datainc %04x", inc);
}
return true;
case kResetOnPause:
_resetOnPause = info.basic.param2;
return true;
// 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 true;
// 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 true;
default:
warning("Unhandled SCI MIDI command 0x%x (parameter %d)", info.basic.param1, info.basic.param2);
return true;
}
}
// 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 true;
} 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
return 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.data.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;
if (_soundVersion <= SCI_VERSION_0_LATE) {
// update driver master volume
setVolume(_volume);
} else if (_soundVersion >= SCI_VERSION_1_EARLY && _soundVersion <= SCI_VERSION_2_1_MIDDLE) {
// directly set master volume (global volume is merged with channel volumes)
((MidiPlayer *)_driver)->setVolume(masterVolume);
} else {
error("MidiParser_SCI::setVolume: Unsupported soundVersion %s", getSciVersionDesc(_soundVersion));
}
}
void MidiParser_SCI::setVolume(byte volume) {
assert(volume <= MUSIC_VOLUME_MAX);
_volume = volume;
if (_soundVersion <= 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);
} else if (_soundVersion >= SCI_VERSION_1_EARLY && _soundVersion <= SCI_VERSION_2_1_MIDDLE) {
// 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]);
} else {
error("MidiParser_SCI::setVolume: Unsupported soundVersion %s", getSciVersionDesc(_soundVersion));
}
}
void MidiParser_SCI::remapChannel(int channel, int devChannel) {
if (_channelRemap[channel] == devChannel)
return;
_channelRemap[channel] = devChannel;
if (devChannel == -1)
return;
// debug(" restoring state: channel %d on devChannel %d", channel, devChannel);
// restore state
ChannelState &s = _channelState[channel];
int channelVolume = _channelVolume[channel];
channelVolume = (channelVolume * _volume / 127) & 0xFF;
byte pitch1 = s._pitchWheel & 0x7F;
byte pitch2 = (s._pitchWheel >> 7) & 0x7F;
sendToDriver_raw(0x0040B0 | devChannel); // sustain off
sendToDriver_raw(0x004BB0 | devChannel | (s._voices << 16));
sendToDriver_raw(0x0000C0 | devChannel | (s._patch << 8));
sendToDriver_raw(0x0007B0 | devChannel | (channelVolume << 16));
sendToDriver_raw(0x000AB0 | devChannel | (s._pan << 16));
sendToDriver_raw(0x0001B0 | devChannel | (s._modWheel << 16));
sendToDriver_raw(0x0040B0 | devChannel | (s._sustain ? 0x7F0000 : 0));
sendToDriver_raw(0x0000E0 | devChannel | (pitch1 << 8) | (pitch2 << 16));
// CHECKME: Some SSCI version send a control change 0x4E with s._note as
// parameter.
// We need to investigate how (and if) drivers should act on this.
// Related: controller 0x4E is used for 'mute' in the midiparser.
// This could be a bug in SSCI that went unnoticed because few (or no?)
// drivers implement controller 0x4E
// NB: The line below is _not_ valid since s._note can be 0xFF.
// SSCI handles this out of band in the driver interface.
// sendToDriver_raw(0x004EB0 | devChannel | (s._note << 16);
}
} // End of namespace Sci