bool MidiParser_SH::loadMusic(byte *musData, uint32 musDataSize) {
Common::StackLock lock(_mutex);
debugC(kDebugLevelMusic, "Music: loadMusic()");
unloadMusic();
_musData = musData;
_musDataSize = musDataSize;
byte *headerPtr = _musData + 12; // skip over the already checked SPACE header
byte *pos = headerPtr;
uint16 headerSize = READ_LE_UINT16(headerPtr);
assert(headerSize == 0x7F); // Security check
// Skip over header
pos += headerSize;
_lastEvent = 0;
_trackEnd = _musData + _musDataSize;
_numTracks = 1;
_tracks[0] = pos;
_ppqn = 1;
setTempo(16667);
setTrack(0);
return true;
}
bool MidiParser_S1D::loadMusic(byte *data, uint32 size) {
unloadMusic();
if (!size)
return false;
// The original actually just ignores the first two bytes.
byte *pos = data;
if (*pos == 0xFC) {
// SysEx found right at the start
// this seems to happen since Elvira 2, we ignore it
// 3rd byte after the SysEx seems to be saved into a global
// We expect at least 4 bytes in total
if (size < 4)
return false;
byte skipOffset = pos[2]; // get second byte after the SysEx
// pos[1] seems to have been ignored
// pos[3] is saved into a global inside the original interpreters
// Waxworks + Simon 1 demo typical header is:
// 0xFC 0x29 0x07 0x01 [0x00/0x01]
// Elvira 2 typical header is:
// 0xFC 0x04 0x06 0x06
if (skipOffset >= 6) {
// should be at least 6, so that we skip over the 2 size bytes and the
// smallest SysEx possible
skipOffset -= 2; // 2 size bytes were already read by previous code outside of this method
if (size <= skipOffset) // Skip to the end of file? -> something is not correct
return false;
// Do skip over the bytes
pos += skipOffset;
} else {
warning("MidiParser_S1D: unexpected skip offset in music file");
}
}
// And now we're at the actual data. Only one track.
_numTracks = 1;
_data = pos;
_tracks[0] = pos;
// Note that we assume the original data passed in
// will persist beyond this call, i.e. we do NOT
// copy the data to our own buffer. Take warning....
resetTracking();
setTempo(666667);
setTrack(0);
return true;
}
void AudioManager::stopMusic(const std::string &musicId,
bool unload /* = false */)
{
_CHECK_AND_WARN_IF_NOT_EXISTS(
"AudioManager::stopMusic",
"MusicId is not loaded: (%s)",
m_musicMap,
musicId
);
_AE::stop(m_musicMap[musicId].currInternalId);
if(unload)
unloadMusic(musicId);
}
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] = _mixedData;
if (_pSnd)
setTrack(0);
_loopTick = 0;
return true;
}
bool MidiParser_RO::loadMusic (byte *data, uint32 size) {
unloadMusic();
byte *pos = data;
if (memcmp (pos, "RO", 2)) {
error("'RO' header expected but found '%c%c' instead", pos[0], pos[1]);
return false;
}
_num_tracks = 1;
_ppqn = 120;
_tracks[0] = pos + 2;
_markerCount = _lastMarkerCount = 0;
// Note that we assume the original data passed in
// will persist beyond this call, i.e. we do NOT
// copy the data to our own buffer. Take warning....
resetTracking();
setTempo (500000);
setTrack (0);
return true;
}
bool MidiParser_S1D::loadMusic(byte *data, uint32 size) {
unloadMusic();
byte *pos = data;
if (*(pos++) != 0xFC)
debug(1, "Expected 0xFC header but found 0x%02X instead", (int) *pos);
// The next 3 bytes MIGHT be tempo, but we skip them and use the default.
// setTempo (*(pos++) | (*(pos++) << 8) | (*(pos++) << 16));
pos += 3;
// And now we're at the actual data. Only one track.
_num_tracks = 1;
_data = pos;
_tracks[0] = pos;
// Note that we assume the original data passed in
// will persist beyond this call, i.e. we do NOT
// copy the data to our own buffer. Take warning....
resetTracking();
setTempo(666667);
setTrack(0);
return true;
}
bool MidiParser_SMF::loadMusic(byte *data, uint32 size) {
uint32 len;
byte midi_type;
uint32 total_size;
bool isGMF;
unloadMusic();
byte *pos = data;
isGMF = false;
if (!memcmp(pos, "RIFF", 4)) {
// Skip the outer RIFF header.
pos += 8;
}
if (!memcmp(pos, "MThd", 4)) {
// SMF with MTHd information.
pos += 4;
len = read4high(pos);
if (len != 6) {
warning("MThd length 6 expected but found %d", (int)len);
return false;
}
// Verify that this MIDI either is a Type 2
// or has only 1 track. We do not support
// multitrack Type 1 files.
_num_tracks = pos[2] << 8 | pos[3];
midi_type = pos[1];
if (midi_type > 2 /*|| (midi_type < 2 && _num_tracks > 1)*/) {
warning("No support for a Type %d MIDI with %d tracks", (int)midi_type, (int)_num_tracks);
return false;
}
_ppqn = pos[4] << 8 | pos[5];
pos += len;
} else if (!memcmp(pos, "GMF\x1", 4)) {
// Older GMD/MUS file with no header info.
// Assume 1 track, 192 PPQN, and no MTrk headers.
isGMF = true;
midi_type = 0;
_num_tracks = 1;
_ppqn = 192;
pos += 7; // 'GMD\x1' + 3 bytes of useless (translate: unknown) information
} else {
warning("Expected MThd or GMD header but found '%c%c%c%c' instead", pos[0], pos[1], pos[2], pos[3]);
return false;
}
// Now we identify and store the location for each track.
if (_num_tracks > ARRAYSIZE(_tracks)) {
warning("Can only handle %d tracks but was handed %d", (int)ARRAYSIZE(_tracks), (int)_num_tracks);
return false;
}
total_size = 0;
int tracks_read = 0;
while (tracks_read < _num_tracks) {
if (memcmp(pos, "MTrk", 4) && !isGMF) {
warning("Position: %p ('%c')", pos, *pos);
warning("Hit invalid block '%c%c%c%c' while scanning for track locations", pos[0], pos[1], pos[2], pos[3]);
return false;
}
// If needed, skip the MTrk and length bytes
_tracks[tracks_read] = pos + (isGMF ? 0 : 8);
if (!isGMF) {
pos += 4;
len = read4high(pos);
total_size += len;
pos += len;
} else {
// An SMF End of Track meta event must be placed
// at the end of the stream.
data[size++] = 0xFF;
data[size++] = 0x2F;
data[size++] = 0x00;
data[size++] = 0x00;
}
++tracks_read;
}
// If this is a Type 1 MIDI, we need to now compress
// our tracks down into a single Type 0 track.
free(_buffer);
_buffer = 0;
if (midi_type == 1) {
// FIXME: Doubled the buffer size to prevent crashes with the
// Inherit the Earth MIDIs. Jamieson630 said something about a
// better fix, but this will have to do in the meantime.
_buffer = (byte *)malloc(size * 2);
compressToType0();
_num_tracks = 1;
_tracks[0] = _buffer;
}
// Note that we assume the original data passed in
// will persist beyond this call, i.e. we do NOT
// copy the data to our own buffer. Take warning....
resetTracking();
setTempo(500000);
setTrack(0);
return true;
}
void MidiParser_SH::parseNextEvent(EventInfo &info) {
Common::StackLock lock(_mutex);
// warning("parseNextEvent");
// there is no delta right at the start of the music data
// this order is essential, otherwise notes will get delayed or even go missing
if (_position._playPos != _tracks[0]) {
info.delta = *(_position._playPos++);
} else {
info.delta = 0;
}
info.start = _position._playPos;
info.event = *_position._playPos++;
//warning("Event %x", info.event);
_position._runningStatus = info.event;
switch (info.command()) {
case 0xC: { // program change
int idx = *_position._playPos++;
info.basic.param1 = idx & 0x7f;
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:
if (info.event == 0xFF) {
error("SysEx META event 0xFF");
byte type = *(_position._playPos++);
switch(type) {
case 0x2F:
// End of Track
allNotesOff();
stopPlaying();
unloadMusic();
return;
case 0x51:
warning("TODO: 0xFF / 0x51");
return;
default:
warning("TODO: 0xFF / %x Unknown", type);
break;
}
} else if (info.event == 0xFC) {
// Official End-Of-Track signal
debugC(kDebugLevelMusic, "Music: System META event 0xFC");
byte type = *(_position._playPos++);
switch (type) {
case 0x80: // end of track, triggers looping
debugC(kDebugLevelMusic, "Music: META event triggered looping");
jumpToTick(0, true, true, false);
break;
case 0x81: // end of track, stop playing
debugC(kDebugLevelMusic, "Music: META event triggered music stop");
stopPlaying();
unloadMusic();
break;
default:
error("MidiParser_SH::parseNextEvent: Unknown META event 0xFC type %x", type);
break;
}
} else {
warning("TODO: %x / Unknown", info.event);
break;
}
break;
default:
warning("MidiParser_SH::parseNextEvent: Unsupported event code %x", info.event);
break;
}// switch (info.command())
}
MidiParser_SH::~MidiParser_SH() {
Common::StackLock lock(_mutex);
unloadMusic();
_driver = NULL;
}
bool MidiParser_XMIDI::loadMusic(byte *data, uint32 size) {
uint32 i = 0;
byte *start;
uint32 len;
uint32 chunk_len;
char buf[32];
_loopCount = -1;
unloadMusic();
byte *pos = data;
if (!memcmp(pos, "FORM", 4)) {
pos += 4;
// Read length of
len = read4high(pos);
start = pos;
// XDIRless XMIDI, we can handle them here.
if (!memcmp(pos, "XMID", 4)) {
warning("XMIDI doesn't have XDIR");
pos += 4;
_num_tracks = 1;
} else if (memcmp(pos, "XDIR", 4)) {
// Not an XMIDI that we recognise
warning("Expected 'XDIR' but found '%c%c%c%c'", pos[0], pos[1], pos[2], pos[3]);
return false;
} else {
// Seems Valid
pos += 4;
_num_tracks = 0;
for (i = 4; i < len; i++) {
// Read 4 bytes of type
memcpy(buf, pos, 4);
pos += 4;
// Read length of chunk
chunk_len = read4high(pos);
// Add eight bytes
i += 8;
if (memcmp(buf, "INFO", 4)) {
// Must align
pos += (chunk_len + 1) & ~1;
i += (chunk_len + 1) & ~1;
continue;
}
// Must be at least 2 bytes long
if (chunk_len < 2) {
warning("Invalid chunk length %d for 'INFO' block", (int)chunk_len);
return false;
}
_num_tracks = (byte)read2low(pos);
if (chunk_len > 2) {
warning("Chunk length %d is greater than 2", (int)chunk_len);
pos += chunk_len - 2;
}
break;
}
// Didn't get to fill the header
if (_num_tracks == 0) {
warning("Didn't find a valid track count");
return false;
}
// Ok now to start part 2
// Goto the right place
pos = start + ((len + 1) & ~1);
if (memcmp(pos, "CAT ", 4)) {
// Not an XMID
warning("Expected 'CAT ' but found '%c%c%c%c'", pos[0], pos[1], pos[2], pos[3]);
return false;
}
pos += 4;
// Now read length of this track
len = read4high(pos);
if (memcmp(pos, "XMID", 4)) {
// Not an XMID
warning("Expected 'XMID' but found '%c%c%c%c'", pos[0], pos[1], pos[2], pos[3]);
return false;
}
pos += 4;
}
// Ok it's an XMIDI.
// We're going to identify and store the location for each track.
if (_num_tracks > ARRAYSIZE(_tracks)) {
warning("Can only handle %d tracks but was handed %d", (int)ARRAYSIZE(_tracks), (int)_num_tracks);
return false;
}
int tracks_read = 0;
while (tracks_read < _num_tracks) {
if (!memcmp(pos, "FORM", 4)) {
// Skip this plus the 4 bytes after it.
pos += 8;
} else if (!memcmp(pos, "XMID", 4)) {
// Skip this.
pos += 4;
} else if (!memcmp(pos, "TIMB", 4)) {
// Custom timbres?
// We don't support them.
// Read the length, skip it, and hope there was nothing there.
pos += 4;
len = read4high(pos);
pos += (len + 1) & ~1;
} else if (!memcmp(pos, "EVNT", 4)) {
// Ahh! What we're looking for at last.
_tracks[tracks_read] = pos + 8; // Skip the EVNT and length bytes
pos += 4;
len = read4high(pos);
pos += (len + 1) & ~1;
++tracks_read;
} else {
warning("Hit invalid block '%c%c%c%c' while scanning for track locations", pos[0], pos[1], pos[2], pos[3]);
return false;
}
}
// If we got this far, we successfully established
// the locations for each of our tracks.
// Note that we assume the original data passed in
// will persist beyond this call, i.e. we do NOT
// copy the data to our own buffer. Take warning....
_ppqn = 60;
resetTracking();
setTempo(500000);
_inserted_delta = 0;
setTrack(0);
return true;
}
return false;
}
