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scummvm/scumm/resource.cpp
Travis Howell f76725b38f Update comment 
svn-id: r9916
2003-08-30 08:03:01 +00:00

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/* ScummVM - Scumm Interpreter
* Copyright (C) 2001 Ludvig Strigeus
* Copyright (C) 2001-2003 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 "imuse.h"
#include "scumm.h"
#include "resource.h"
#include "bundle.h"
#include "verbs.h"
#include "scumm/sound.h"
#include "common/map.h"
#include "common/str.h"
#include "sound/mididrv.h" // Need MD_ enum values
#include "gui/message.h"
#include "dialogs.h"
static uint16 newTag2Old(uint32 oldTag);
static const char *resTypeFromId(int id);
/* Open a room */
void Scumm::openRoom(int room) {
int room_offs, roomlimit;
bool result;
char buf[128];
char buf2[128] = "";
byte encByte = 0;
debug(9, "openRoom(%d)", room);
assert(room >= 0);
/* Don't load the same room again */
if (_lastLoadedRoom == room)
return;
_lastLoadedRoom = room;
/* Room -1 means close file */
if (room == -1) {
deleteRoomOffsets();
_fileHandle.close();
return;
}
/* Either xxx.lfl or monkey.xxx file name */
while (1) {
if (_features & GF_SMALL_NAMES)
roomlimit = 98;
else
roomlimit = 900;
if (_features & GF_EXTERNAL_CHARSET && room >= roomlimit)
room_offs = 0;
else
room_offs = room ? _roomFileOffsets[room] : 0;
if (room_offs == -1)
break;
if (room_offs != 0 && room != 0) {
_fileOffset = _roomFileOffsets[room];
return;
}
if (!(_features & GF_SMALL_HEADER)) {
if (_features & GF_AFTER_HEV7) {
sprintf(buf, "%s.he%.1d", _exe_name, room == 0 ? 0 : 1);
} else if (_version >= 7) {
if (room > 0 && (_version == 8))
VAR(VAR_CURRENTDISK) = res.roomno[rtRoom][room];
sprintf(buf, "%s.la%d", _exe_name, room == 0 ? 0 : res.roomno[rtRoom][room]);
sprintf(buf2, "%s.%.3d", _exe_name, room == 0 ? 0 : res.roomno[rtRoom][room]);
} else if (_features & GF_HUMONGOUS)
sprintf(buf, "%s.he%.1d", _exe_name, room == 0 ? 0 : res.roomno[rtRoom][room]);
else {
sprintf(buf, "%s.%.3d", _exe_name, room == 0 ? 0 : res.roomno[rtRoom][room]);
if (_gameId == GID_SAMNMAX)
sprintf(buf2, "%s.sm%.1d", _exe_name, room == 0 ? 0 : res.roomno[rtRoom][room]);
}
encByte = (_features & GF_USE_KEY) ? 0x69 : 0;
} else if (!(_features & GF_SMALL_NAMES)) {
if (room == 0 || room >= 900) {
sprintf(buf, "%.3d.lfl", room);
encByte = 0;
if (openResourceFile(buf, encByte)) {
return;
}
askForDisk(buf, room == 0 ? 0 : res.roomno[rtRoom][room]);
} else {
sprintf(buf, "disk%.2d.lec", room == 0 ? 0 : res.roomno[rtRoom][room]);
encByte = 0x69;
}
} else {
sprintf(buf, "%.2d.lfl", room);
encByte = (_features & GF_USE_KEY) ? 0xFF : 0;
}
result = openResourceFile(buf, encByte);
if ((result == false) && (buf2[0]))
result = openResourceFile(buf2, encByte);
if (result) {
if (room == 0)
return;
if (_features & GF_EXTERNAL_CHARSET && room >= roomlimit)
return;
readRoomsOffsets();
_fileOffset = _roomFileOffsets[room];
if (_fileOffset != 8)
return;
error("Room %d not in %s", room, buf);
return;
}
askForDisk(buf, room == 0 ? 0 : res.roomno[rtRoom][room]);
}
do {
sprintf(buf, "%.3d.lfl", room);
encByte = 0;
if (openResourceFile(buf, encByte))
break;
askForDisk(buf, room == 0 ? 0 : res.roomno[rtRoom][room]);
} while (1);
deleteRoomOffsets();
_fileOffset = 0; // start of file
}
void Scumm::closeRoom() {
if (_lastLoadedRoom != -1) {
_lastLoadedRoom = -1;
deleteRoomOffsets();
_fileHandle.close();
}
}
/** Delete the currently loaded room offsets. */
void Scumm::deleteRoomOffsets() {
if (!(_features & GF_SMALL_HEADER) && !_dynamicRoomOffsets)
return;
for (int i = 0; i < _maxRooms; i++) {
if (_roomFileOffsets[i] != 0xFFFFFFFF)
_roomFileOffsets[i] = 0;
}
}
/** Read room offsets */
void Scumm::readRoomsOffsets() {
int num, room, i;
byte *ptr;
debug(9, "readRoomOffsets()");
deleteRoomOffsets();
if (_features & GF_SMALL_NAMES)
return;
if (_features & GF_AFTER_HEV7) {
num = READ_LE_UINT16(_HEV7RoomOffsets);
ptr = _HEV7RoomOffsets + 2;
for (i = 0; i < num; i++) {
_roomFileOffsets[i] = READ_LE_UINT32(ptr);
ptr += 4;
}
return;
}
if (!(_features & GF_SMALL_HEADER)) {
if (!_dynamicRoomOffsets)
return;
_fileHandle.seek(16, SEEK_SET);
} else {
_fileHandle.seek(12, SEEK_SET); // Directly searching for the room offset block would be more generic...
}
num = _fileHandle.readByte();
while (num--) {
room = _fileHandle.readByte();
if (_roomFileOffsets[room] != 0xFFFFFFFF) {
_roomFileOffsets[room] = _fileHandle.readUint32LE();
} else {
_fileHandle.readUint32LE();
}
}
}
bool Scumm::openResourceFile(const char *filename, byte encByte) {
debug(9, "openResourceFile(%s)", filename);
if (_fileHandle.isOpen()) {
_fileHandle.close();
}
_fileHandle.open(filename, getGameDataPath(), 1, encByte);
return _fileHandle.isOpen();
}
void Scumm::askForDisk(const char *filename, int disknum) {
char buf[128];
if (_version == 8) {
char result;
_sound->_bundle->closeVoiceFile();
_sound->_bundle->closeMusicFile();
#ifdef MACOSX
sprintf(buf, "Cannot find file: '%s'\nPlease insert disc %d.\nHit OK to retry, Cancel to exit", filename, disknum);
#else
sprintf(buf, "Cannot find file: '%s'\nInsert disc %d into drive %s\nHit OK to retry, Cancel to exit", filename, disknum, getGameDataPath());
#endif
result = displayError(true, buf);
if (result == 2)
error("Cannot find file: '%s'", filename);
} else {
sprintf(buf, "Cannot find file: '%s'", filename);
InfoDialog* dialog = new InfoDialog(_newgui, this, (char*)buf);
runDialog (dialog);
delete dialog;
error("Cannot find file: '%s'", filename);
}
}
void Scumm::readIndexFile() {
uint32 blocktype, itemsize;
int numblock = 0;
int num, i;
bool stop = false;
debug(9, "readIndexFile()");
closeRoom();
openRoom(0);
if (_version <= 5) {
/* Figure out the sizes of various resources */
while (!_fileHandle.eof()) {
blocktype = fileReadDword();
itemsize = _fileHandle.readUint32BE();
if (_fileHandle.ioFailed())
break;
switch (blocktype) {
case MKID('DOBJ'):
_numGlobalObjects = _fileHandle.readUint16LE();
itemsize -= 2;
break;
case MKID('DROO'):
_numRooms = _fileHandle.readUint16LE();
itemsize -= 2;
break;
case MKID('DSCR'):
_numScripts = _fileHandle.readUint16LE();
itemsize -= 2;
break;
case MKID('DCOS'):
_numCostumes = _fileHandle.readUint16LE();
itemsize -= 2;
break;
case MKID('DSOU'):
_numSounds = _fileHandle.readUint16LE();
itemsize -= 2;
break;
}
_fileHandle.seek(itemsize - 8, SEEK_CUR);
}
_fileHandle.clearIOFailed();
_fileHandle.seek(0, SEEK_SET);
}
while (!stop) {
blocktype = fileReadDword();
if (_fileHandle.ioFailed())
break;
itemsize = _fileHandle.readUint32BE();
numblock++;
switch (blocktype) {
case MKID('DCHR'):
case MKID('DIRF'):
readResTypeList(rtCharset, MKID('CHAR'), "charset");
break;
case MKID('DOBJ'):
if (_version == 8)
num = _fileHandle.readUint32LE();
else
num = _fileHandle.readUint16LE();
assert(num == _numGlobalObjects);
if (_version == 8) { /* FIXME: Not sure.. */
char buffer[40];
for (i = 0; i < num; i++) {
_fileHandle.read(buffer, 40);
if (buffer[0]) {
// Add to object name-to-id map
_objectIDMap[buffer] = i;
}
_objectStateTable[i] = _fileHandle.readByte();
_objectRoomTable[i] = _fileHandle.readByte();
_classData[i] = _fileHandle.readUint32LE();
}
memset(_objectOwnerTable, 0xFF, num);
} else if (_version == 7) {
_fileHandle.read(_objectStateTable, num);
_fileHandle.read(_objectRoomTable, num);
memset(_objectOwnerTable, 0xFF, num);
} else {
_fileHandle.read(_objectOwnerTable, num);
for (i = 0; i < num; i++) {
_objectStateTable[i] = _objectOwnerTable[i] >> OF_STATE_SHL;
_objectOwnerTable[i] &= OF_OWNER_MASK;
}
if (_features & GF_AFTER_HEV7) {
// _objectRoomTable
_fileHandle.seek(num * 4, SEEK_CUR);
//_fileHandle.read(_objectRoomTable, num * 4);
}
}
if (_version != 8) {
_fileHandle.read(_classData, num * sizeof(uint32));
// Swap flag endian where applicable
#if defined(SCUMM_BIG_ENDIAN)
for (i = 0; i != num; i++)
_classData[i] = FROM_LE_32(_classData[i]);
#endif
}
break;
case MKID('RNAM'):
_fileHandle.seek(itemsize - 8, SEEK_CUR);
break;
case MKID('DLFL'):
i = _fileHandle.readUint16LE();
_fileHandle.seek(-2, SEEK_CUR);
_HEV7RoomOffsets = (byte *)calloc(2 + (i * 4), 1);
_fileHandle.read(_HEV7RoomOffsets, (2 + (i * 4)) );
break;
case MKID('DIRM'):
_fileHandle.seek(itemsize - 8, SEEK_CUR);
break;
case MKID('DIRI'):
num = _fileHandle.readUint16LE();
_fileHandle.seek(num + (8 * num), SEEK_CUR);
break;
case MKID('ANAM'):
_numAudioNames = _fileHandle.readUint16LE();
_audioNames = (char*)malloc(_numAudioNames * 9);
_fileHandle.read(_audioNames, _numAudioNames * 9);
break;
case MKID('DROO'):
readResTypeList(rtRoom, MKID('ROOM'), "room");
break;
case MKID('DIRR'):
readResTypeList(rtRoom, MKID('RMDA'), "room");
break;
case MKID('DRSC'): // FIXME: Verify
readResTypeList(rtRoomScripts, MKID('RMSC'), "room script");
break;
case MKID('DSCR'):
case MKID('DIRS'):
readResTypeList(rtScript, MKID('SCRP'), "script");
break;
case MKID('DCOS'):
case MKID('DIRC'):
readResTypeList(rtCostume, MKID('COST'), "costume");
break;
case MKID('MAXS'):
readMAXS();
break;
case MKID('DSOU'):
readResTypeList(rtSound, MKID('SOUN'), "sound");
break;
case MKID('DIRN'):
readResTypeList(rtSound, MKID('DIRN'), "sound");
break;
case MKID('AARY'):
debug(3, "Going to call readArrayFromIndexFile (pos = 0x%08x)", _fileHandle.pos());
readArrayFromIndexFile();
debug(3, "After readArrayFromIndexFile (pos = 0x%08x)", _fileHandle.pos());
break;
default:
error("Bad ID %c%c%c%c found in directory!",
(byte)blocktype,
(byte)(blocktype >> 8),
(byte)(blocktype >> 16),
(byte)(blocktype >> 24));
return;
}
}
// if (numblock!=9)
// error("Not enough blocks read from directory");
closeRoom();
}
void Scumm::readArrayFromIndexFile() {
int num;
int a, b, c;
if (_version == 8) {
while ((num = _fileHandle.readUint32LE()) != 0) {
a = _fileHandle.readUint32LE();
b = _fileHandle.readUint32LE();
// FIXME - seems the COMI scripts have a bug related to array 436.
// and visible in script 2015, room 20. Basically, the dimensions
// are swapped in the definition of the array, but its obvious
// that this must be a script bug simply by looking at the defintions
// of other arrays and how they are used.
// Talk to fingolfin if you have questions about this :-)
if (num == 436)
defineArray(num, 5, b, a);
else
defineArray(num, 5, a, b);
}
} else {
while ((num = _fileHandle.readUint16LE()) != 0) {
a = _fileHandle.readUint16LE();
b = _fileHandle.readUint16LE();
c = _fileHandle.readUint16LE();
if (c == 1)
defineArray(num, 1, a, b);
else
defineArray(num, 5, a, b);
}
}
}
void Scumm::readResTypeList(int id, uint32 tag, const char *name) {
int num;
int i;
debug(9, "readResTypeList(%s,%x,%s)", resTypeFromId(id), FROM_LE_32(tag), name);
if (_version == 8)
num = _fileHandle.readUint32LE();
else if (!(_features & GF_OLD_BUNDLE))
num = _fileHandle.readUint16LE();
else
num = _fileHandle.readByte();
if (_features & GF_OLD_BUNDLE) {
if (num >= 0xFF) {
error("Too many %ss (%d) in directory", name, num);
}
} else {
if (num != res.num[id]) {
error("Invalid number of %ss (%d) in directory", name, num);
}
}
if (_features & GF_OLD_BUNDLE) {
if (id == rtRoom) {
for (i = 0; i < num; i++)
res.roomno[id][i] = i;
_fileHandle.seek(num, SEEK_CUR);
} else {
for (i = 0; i < num; i++)
res.roomno[id][i] = _fileHandle.readByte();
}
for (i = 0; i < num; i++) {
res.roomoffs[id][i] = _fileHandle.readUint16LE();
if (res.roomoffs[id][i] == 0xFFFF)
res.roomoffs[id][i] = 0xFFFFFFFF;
}
} else if (_features & GF_SMALL_HEADER) {
for (i = 0; i < num; i++) {
res.roomno[id][i] = _fileHandle.readByte();
res.roomoffs[id][i] = _fileHandle.readUint32LE();
}
} else {
for (i = 0; i < num; i++) {
res.roomno[id][i] = _fileHandle.readByte();
}
for (i = 0; i < num; i++) {
res.roomoffs[id][i] = _fileHandle.readUint32LE();
}
if (_features & GF_AFTER_HEV7) {
_fileHandle.seek(4 * num, SEEK_CUR); // FIXME what are these additional offsets
}
}
}
void Scumm::allocResTypeData(int id, uint32 tag, int num, const char *name, int mode) {
debug(9, "allocResTypeData(%s/%s,%x,%d,%d)", resTypeFromId(id), name, FROM_LE_32(tag), num, mode);
assert(id >= 0 && id < (int)(ARRAYSIZE(res.mode)));
if (num >= 2000) {
error("Too many %ss (%d) in directory", name, num);
}
res.mode[id] = mode;
res.num[id] = num;
res.tags[id] = tag;
res.name[id] = name;
res.address[id] = (byte **)calloc(num, sizeof(void *));
res.flags[id] = (byte *)calloc(num, sizeof(byte));
if (mode) {
res.roomno[id] = (byte *)calloc(num, sizeof(byte));
res.roomoffs[id] = (uint32 *)calloc(num, sizeof(uint32));
}
}
void Scumm::loadCharset(int no) {
int i;
byte *ptr;
debug(9, "loadCharset(%d)", no);
/* FIXME - hack around crash in Indy4 (occurs if you try to load after dieing) */
if (_gameId == GID_INDY4 && no == 0)
no = 1;
assert(no < (int)sizeof(_charsetData) / 16);
checkRange(_maxCharsets - 1, 1, no, "Loading illegal charset %d");
// ensureResourceLoaded(rtCharset, no);
ptr = getResourceAddress(rtCharset, no);
if (_features & GF_SMALL_HEADER)
ptr -= 12;
for (i = 0; i < 15; i++) {
_charsetData[no][i + 1] = ptr[i + 14];
}
}
void Scumm::nukeCharset(int i) {
checkRange(_maxCharsets - 1, 1, i, "Nuking illegal charset %d");
nukeResource(rtCharset, i);
}
void Scumm::ensureResourceLoaded(int type, int i) {
void *addr = NULL;
debug(9, "ensureResourceLoaded(%s,%d)", resTypeFromId(type), i);
if (type == rtRoom && i > 0x7F && _version < 7) {
i = _resourceMapper[i & 0x7F];
}
// FIXME - TODO: This check used to be "i==0". However, that causes
// problems when using this function to ensure charset 0 is loaded.
// This is done for many games, e.g. Zak256 or Indy3 (EGA and VGA).
// For now we restrict the check to anything which is not a charset.
// Question: Why was this check like that in the first place?
// Answer: costumes with an index of zero in the newer games at least.
// TODO: determine why the heck anything would try to load a costume
// with id 0. Is that "normal", or is it caused by yet another bug in
// our code base? After all we also have to add special cases for many
// of our script opcodes that check for the (invalid) actor 0... so
// maybe both issues are related...
if (type != rtCharset && i == 0)
return;
if (i <= res.num[type])
addr = res.address[type][i];
if (addr)
return;
loadResource(type, i);
if (_version < 7 && !(_features & GF_SMALL_HEADER))
if (type == rtRoom && i == _roomResource)
VAR(VAR_ROOM_FLAG) = 1;
}
int Scumm::loadResource(int type, int idx) {
int roomNr;
uint32 fileOffs;
uint32 size, tag;
debug(2, "loadResource(%s,%d)", resTypeFromId(type),idx);
if (type == rtCharset && (_features & GF_SMALL_HEADER)) {
loadCharset(idx);
return (1);
}
roomNr = getResourceRoomNr(type, idx);
if (idx >= res.num[type])
error("%s %d undefined %d %d", res.name[type], idx, res.num[type], roomNr);
if (roomNr == 0)
roomNr = _roomResource;
if (type == rtRoom) {
if (_version == 8)
fileOffs = 8;
else
fileOffs = 0;
} else {
fileOffs = res.roomoffs[type][idx];
if (fileOffs == 0xFFFFFFFF)
return 0;
}
openRoom(roomNr);
_fileHandle.seek(fileOffs + _fileOffset, SEEK_SET);
if (_features & GF_OLD_BUNDLE) {
if ((_version == 3) && !(_features & GF_AMIGA) && (type == rtSound)) {
return readSoundResourceSmallHeader(type, idx);
} else {
size = _fileHandle.readUint16LE();
_fileHandle.seek(-2, SEEK_CUR);
}
} else if (_features & GF_SMALL_HEADER) {
if (!(_features & GF_SMALL_NAMES))
_fileHandle.seek(8, SEEK_CUR);
size = _fileHandle.readUint32LE();
tag = _fileHandle.readUint16LE();
_fileHandle.seek(-6, SEEK_CUR);
if ((type == rtSound) && !(_features & GF_AMIGA) && !(_features & GF_FMTOWNS)) {
return readSoundResourceSmallHeader(type, idx);
}
} else {
if (type == rtSound) {
_fileHandle.readUint32LE();
_fileHandle.readUint32LE();
return readSoundResource(type, idx);
}
tag = fileReadDword();
if (tag != res.tags[type]) {
error("%s %d not in room %d at %d+%d in file %s",
res.name[type], idx, roomNr,
_fileOffset, fileOffs, _fileHandle.name());
}
size = _fileHandle.readUint32BE();
_fileHandle.seek(-8, SEEK_CUR);
}
_fileHandle.read(createResource(type, idx, size), size);
// dump the resource if requested
if (_dumpScripts && type == rtScript) {
dumpResource("script-", idx, getResourceAddress(rtScript, idx));
}
if (!_fileHandle.ioFailed()) {
return 1;
}
nukeResource(type, idx);
error("Cannot read resource");
}
int Scumm::readSoundResource(int type, int idx) {
uint32 pos, total_size, size, tag, basetag;
int pri, best_pri;
uint32 best_size = 0, best_offs = 0;
debug(9, "readSoundResource(%s,%d)", resTypeFromId(type), idx);
pos = 0;
basetag = fileReadDword();
total_size = _fileHandle.readUint32BE();
debug(8, " basetag: %c%c%c%c, total_size=%d",
(char)((basetag >> 24) & 0xff),
(char)((basetag >> 16) & 0xff),
(char)((basetag >> 8) & 0xff), (char)(basetag & 0xff), total_size);
if (basetag == MKID('MIDI') || basetag == MKID('iMUS')) {
if (_midiDriver != MD_PCSPK && _midiDriver != MD_PCJR) {
_fileHandle.seek(-8, SEEK_CUR);
_fileHandle.read(createResource(type, idx, total_size + 8), total_size + 8);
return 1;
}
} else if (basetag == MKID('SOU ')) {
best_pri = -1;
while (pos < total_size) {
tag = fileReadDword();
size = _fileHandle.readUint32BE() + 8;
pos += size;
pri = -1;
switch (tag) {
case MKID('SBL '):
pri = 15;
break;
case MKID('ADL '):
pri = 1;
if (_midiDriver == MD_ADLIB)
pri = 10;
break;
case MKID('AMI '):
pri = 3;
break;
case MKID('ROL '):
pri = 3;
break;
case MKID('GMD '):
pri = 4;
break;
case MKID('MAC '):
pri = 2;
break;
case MKID('SPK '):
pri = -1;
// if (_midiDriver == MD_PCSPK)
// pri = 11;
break;
}
if ((_midiDriver == MD_PCSPK || _midiDriver == MD_PCJR) && pri != 11)
pri = -1;
debug(8, " tag: %c%c%c%c, total_size=%d, pri=%d",
(char)((tag >> 24) & 0xff),
(char)((tag >> 16) & 0xff), (char)((tag >> 8) & 0xff), (char)(tag & 0xff), size, pri);
if (pri > best_pri) {
best_pri = pri;
best_size = size;
best_offs = _fileHandle.pos();
}
_fileHandle.seek(size - 8, SEEK_CUR);
}
if (best_pri != -1) {
_fileHandle.seek(best_offs - 8, SEEK_SET);
_fileHandle.read(createResource(type, idx, best_size), best_size);
return 1;
}
} else if (FROM_LE_32(basetag) == 24) {
_fileHandle.seek(-12, SEEK_CUR);
total_size = _fileHandle.readUint32BE();
_fileHandle.seek(-8, SEEK_CUR);
_fileHandle.read(createResource(type, idx, total_size), total_size);
return 1;
} else if (basetag == MKID('Mac0')) {
debug(1, "Found base tag Mac0 in sound %d, size %d", idx, total_size);
debug(1, "It was at position %d", _fileHandle.pos());
/* Offset
0x14, 0x1C, 0x20, 0x24 - offsets of channel 1/2/3/4 chunk-
Each channel has tag "Chan", followed by its length. At the end
of each chan follows either an empty "Done" chunk (length 0) or an
empty "Loop" chunk. Maybe "Loop" indicates the song should be
played forever?!?.
There can be various different subchunks it seems. The
following combinations appear in Monkey Island:
100: ORGA, TROM, BASS,
101: ORGA, SHAK, BASS,
103: PIPE, PIPE, PIPE,
104: VIBE, WHIS, BASS,
108: ORGA, MARI, BASS,
110: ORGA, SHAK, VIBE,
111: MARI, SHAK, BASS,
115: PLUC, SHAK, WHIS,
One guess is that these are instrument names: Organ, Marimba, Whistle...
Maybe there is a mapping table someplace? Maybe these are even mapped to
Mac1 type "instruments" ?
What follows are four byte "commands" it seems, like this (hex):
01 68 4F 49
01 68 00 40
01 68 4F 49
...
01 68 00 40
02 1C 5B 40
00 B4 00 40
...
01 68 37 3C
00 18 37 38
04 20 3E 34
01 68 4A 3C
More data:
00 09 3E 10
01 5F 00 40
00 9C 36 40
00 CC 00 40
00 18 42 49
00 18 45 3C
01 29 4A 3C
00 0F 00 40
Maybe I am mistaken when I think it's four byte, some other parts
seem to suggest it's 2 byte oriented, or even variable length...
*/
_fileHandle.seek(-12, SEEK_CUR);
total_size = _fileHandle.readUint32BE();
_fileHandle.read(createResource(type, idx, total_size), total_size - 8);
return 1;
} else if (basetag == MKID('Mac1')) {
_fileHandle.seek(-12, SEEK_CUR);
total_size = _fileHandle.readUint32BE();
_fileHandle.read(createResource(type, idx, total_size), total_size - 8);
return 1;
} else if (basetag == MKID('DIGI')) {
// Use in Putt-Putt Demo
debug(1, "Found base tag DIGI in sound %d, size %d", idx, total_size);
debug(1, "It was at position %d", _fileHandle.pos());
_fileHandle.seek(-12, SEEK_CUR);
total_size = _fileHandle.readUint32BE();
_fileHandle.read(createResource(type, idx, total_size), total_size - 8);
return 1;
} else if (basetag == MKID('FMUS')) {
// Used in 3DO version of puttputt joins the parade and probably others
// Specifies a seperate file to be used for music from what I gather.
int tmpsize;
int i = 0;
File dmuFile;
char buffer[128];
debug(1, "Found base tag FMUS in sound %d, size %d", idx, total_size);
debug(1, "It was at position %d", _fileHandle.pos());
_fileHandle.seek(4, SEEK_CUR);
// HSHD size
tmpsize = _fileHandle.readUint32BE();
// skip to size part of the SDAT block
_fileHandle.seek(tmpsize - 4, SEEK_CUR);
// SDAT size
tmpsize = _fileHandle.readUint32BE();
// SDAT contains name of file we want
for (i = 0; (buffer[i] != ' ') && (i < tmpsize - 8) ; i++) {
buffer[i] = _fileHandle.readByte();
}
buffer[tmpsize - 11] = '\0';
debug(1, "FMUS file %s", buffer);
if (dmuFile.open(buffer, getGameDataPath()) == false) {
warning("Can't open music file %s*", buffer);
res.roomoffs[type][idx] = 0xFFFFFFFF;
return 0;
}
dmuFile.seek(4, SEEK_SET);
total_size = dmuFile.readUint32BE();
debug(1, "dmu file size %d", total_size);
dmuFile.seek(-8, SEEK_CUR);
dmuFile.read(createResource(type, idx, total_size), total_size);
dmuFile.close();
return 1;
} else if (basetag == MKID('Crea')) {
_fileHandle.seek(-12, SEEK_CUR);
total_size = _fileHandle.readUint32BE();
_fileHandle.read(createResource(type, idx, total_size), total_size - 8);
return 1;
} else {
warning("Unrecognized base tag 0x%08x in sound %d", basetag, idx);
}
res.roomoffs[type][idx] = 0xFFFFFFFF;
return 0;
}
// Adlib MIDI-SYSEX to set MIDI instruments for small header games.
static byte ADLIB_INSTR_MIDI_HACK[95] = {
0x00, 0xf0, 0x14, 0x7d, 0x00, // sysex 00: part on/off
0x00, 0x00, 0x03, // part/channel (offset 5)
0x00, 0x00, 0x07, 0x0f, 0x00, 0x00, 0x08, 0x00,
0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0xf7,
0x00, 0xf0, 0x41, 0x7d, 0x10, // sysex 16: set instrument
0x00, 0x01, // part/channel (offset 28)
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0xf7,
0x00, 0xb0, 0x07, 0x64 // Controller 7 = 100 (offset 92)
};
static const byte map_param[7] = {
0, 2, 3, 4, 8, 9, 0,
};
static const byte freq2note[128] = {
/*128*/ 6, 6, 6, 6,
/*132*/ 7, 7, 7, 7, 7, 7, 7,
/*139*/ 8, 8, 8, 8, 8, 8, 8, 8, 8,
/*148*/ 9, 9, 9, 9, 9, 9, 9, 9, 9,
/*157*/ 10, 10, 10, 10, 10, 10, 10, 10, 10,
/*166*/ 11, 11, 11, 11, 11, 11, 11, 11, 11, 11,
/*176*/ 12, 12, 12, 12, 12, 12, 12, 12, 12, 12,
/*186*/ 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13,
/*197*/ 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14,
/*209*/ 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15,
/*222*/ 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
/*235*/ 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17,
/*249*/ 18, 18, 18, 18, 18, 18, 18
};
static const uint16 num_steps_table[] = {
1, 2, 4, 5,
6, 7, 8, 9,
10, 12, 14, 16,
18, 21, 24, 30,
36, 50, 64, 82,
100, 136, 160, 192,
240, 276, 340, 460,
600, 860, 1200, 1600
};
int Scumm::convert_extraflags(byte * ptr, byte * src_ptr) {
int flags = src_ptr[0];
int t1, t2, t3, t4, time;
int v1, v2, v3;
if (!(flags & 0x80))
return -1;
t1 = (src_ptr[1] & 0xf0) >> 3;
t2 = (src_ptr[2] & 0xf0) >> 3;
t3 = (src_ptr[3] & 0xf0) >> 3 | (flags & 0x40 ? 0x80 : 0);
t4 = (src_ptr[3] & 0x0f) << 1;
v1 = (src_ptr[1] & 0x0f);
v2 = (src_ptr[2] & 0x0f);
v3 = 31;
if ((flags & 0x7) == 0) {
v1 = v1 + 31 + 8;
v2 = v2 + 31 + 8;
} else {
v1 = v1 * 2 + 31;
v2 = v2 * 2 + 31;
}
/* flags a */
if ((flags & 0x7) == 6)
ptr[0] = 0;
else {
ptr[0] = (flags >> 4) & 0xb;
ptr[1] = map_param[flags & 0x7];
}
/* extra a */
ptr[2] = 0;
ptr[3] = 0;
ptr[4] = t1 >> 4;
ptr[5] = t1 & 0xf;
ptr[6] = v1 >> 4;
ptr[7] = v1 & 0xf;
ptr[8] = t2 >> 4;
ptr[9] = t2 & 0xf;
ptr[10] = v2 >> 4;
ptr[11] = v2 & 0xf;
ptr[12] = t3 >> 4;
ptr[13] = t3 & 0xf;
ptr[14] = t4 >> 4;
ptr[15] = t4 & 0xf;
ptr[16] = v3 >> 4;
ptr[17] = v3 & 0xf;
time = num_steps_table[t1] + num_steps_table[t2]
+ num_steps_table[t3 & 0x7f] + num_steps_table[t4];
if (flags & 0x20) {
int playtime = ((src_ptr[4] >> 4) & 0xf) * 118 +
(src_ptr[4] & 0xf) * 8;
if (playtime > time)
time = playtime;
}
/*
time = ((src_ptr[4] >> 4) & 0xf) * 118 +
(src_ptr[4] & 0xf) * 8;
*/
return time;
}
int Scumm::convertADResource(int type, int idx, byte * src_ptr, int size) {
byte * ptr;
byte ticks, play_once;
byte num_instr;
byte *channel, *instr, *track;
byte *tracks[3];
int ppqn;
int delay, delay2, olddelay;
int i, ch;
int total_size = 8 + 16 + 14 + 8 + 7 + 8*sizeof(ADLIB_INSTR_MIDI_HACK) + size;
total_size += 24; // Up to 24 additional bytes are needed for the jump sysex
ptr = createResource(type, idx, total_size);
// We will ignore the PPQN in the original resource, because
// it's invalid anyway. We use a constant PPQN of 480.
ppqn = 480;
src_ptr += 2;
size -= 2;
if (*src_ptr == 0x80) {
// 0x80: is music; otherwise not.
memcpy(ptr, "ADL ", 4); ptr += 4;
uint32 dw = READ_BE_UINT32(&total_size);
memcpy(ptr, &dw, 4); ptr += 4;
memcpy(ptr, "MDhd", 4); ptr += 4;
ptr[0] = 0; ptr[1] = 0; ptr[2] = 0; ptr[3] = 8;
ptr += 4;
memset(ptr, 0, 8), ptr += 8;
memcpy(ptr, "MThd", 4); ptr += 4;
ptr[0] = 0; ptr[1] = 0; ptr[2] = 0; ptr[3] = 6;
ptr += 4;
ptr[0] = 0; ptr[1] = 0; ptr[2] = 0; ptr[3] = 1; // MIDI format 0 with 1 track
ptr += 4;
*ptr++ = ppqn >> 8;
*ptr++ = ppqn & 0xFF;
memcpy(ptr, "MTrk", 4); ptr += 4;
dw = READ_BE_UINT32(&total_size);
memcpy(ptr, &dw, 4); ptr += 4;
// The "speed" of the song
ticks = *(src_ptr + 1);
// Flag that tells us whether we should loop the song (0) or play it only once (1)
play_once = *(src_ptr + 2);
// Number of instruments used
num_instr = *(src_ptr + 8); // Normally 8
// copy the pointer to instrument data
channel = src_ptr + 9;
instr = src_ptr + 0x11;
// skip over the rest of the header and copy the MIDI data into a buffer
src_ptr += 0x11 + 8 * 16;
size -= 0x11 + 8 * 16;
CHECK_HEAP
track = src_ptr;
// Convert the ticks into a MIDI tempo.
// Unfortunate LOOM and INDY3 have different interpretation
// of the ticks value.
if (_gameId == GID_INDY3) {
dw = 1000000 * 256 / 473 * ppqn / 2 / ticks;
} else if (_gameId == GID_LOOM) {
dw = 1000000 * ppqn / 4 / 2 / ticks;
} else {
dw = (500000 * 256) / ticks;
}
debug(4, " ticks = %d, speed = %ld", ticks, dw);
// Write a tempo change Meta event
memcpy(ptr, "\x00\xFF\x51\x03", 4); ptr += 4;
*ptr++ = (byte)((dw >> 16) & 0xFF);
*ptr++ = (byte)((dw >> 8) & 0xFF);
*ptr++ = (byte)(dw & 0xFF);
// Copy our hardcoded instrument table into it
// Then, convert the instrument table as given in this song resource
// And write it *over* the hardcoded table.
// Note: we deliberately.
/* now fill in the instruments */
for (i = 0; i < num_instr; i++) {
ch = channel[i] - 1;
if (ch < 0 || ch > 15)
continue;
debug(4, "Sound %d: instrument %d on channel %d.",
idx, i, ch);
memcpy(ptr, ADLIB_INSTR_MIDI_HACK,
sizeof(ADLIB_INSTR_MIDI_HACK));
ptr[5] += ch;
ptr[28] += ch;
ptr[92] += ch;
/* flags_1 */
ptr[30 + 0] = (instr[i * 16 + 3] >> 4) & 0xf;
ptr[30 + 1] = instr[i * 16 + 3] & 0xf;
/* oplvl_1 */
ptr[30 + 2] = (instr[i * 16 + 4] >> 4) & 0xf;
ptr[30 + 3] = instr[i * 16 + 4] & 0xf;
/* atdec_1 */
ptr[30 + 4] = ((~instr[i * 16 + 5]) >> 4) & 0xf;
ptr[30 + 5] = (~instr[i * 16 + 5]) & 0xf;
/* sustrel_1 */
ptr[30 + 6] = ((~instr[i * 16 + 6]) >> 4) & 0xf;
ptr[30 + 7] = (~instr[i * 16 + 6]) & 0xf;
/* waveform_1 */
ptr[30 + 8] = (instr[i * 16 + 7] >> 4) & 0xf;
ptr[30 + 9] = instr[i * 16 + 7] & 0xf;
/* flags_2 */
ptr[30 + 10] = (instr[i * 16 + 8] >> 4) & 0xf;
ptr[30 + 11] = instr[i * 16 + 8] & 0xf;
/* oplvl_2 */
ptr[30 + 12] = (instr[i * 16 + 9] >> 4) & 0xf;
ptr[30 + 13] = instr[i * 16 + 9] & 0xf;
/* atdec_2 */
ptr[30 + 14] = ((~instr[i * 16 + 10]) >> 4) & 0xf;
ptr[30 + 15] = (~instr[i * 16 + 10]) & 0xf;
/* sustrel_2 */
ptr[30 + 16] = ((~instr[i * 16 + 11]) >> 4) & 0xf;
ptr[30 + 17] = (~instr[i * 16 + 11]) & 0xf;
/* waveform_2 */
ptr[30 + 18] = (instr[i * 16 + 12] >> 4) & 0xf;
ptr[30 + 19] = instr[i * 16 + 12] & 0xf;
/* feedback */
ptr[30 + 20] = (instr[i * 16 + 2] >> 4) & 0xf;
ptr[30 + 21] = instr[i * 16 + 2] & 0xf;
ptr += sizeof(ADLIB_INSTR_MIDI_HACK);
}
// There is a constant delay of ppqn/3 before the music starts.
if (ppqn / 3 >= 128)
*ptr++ = (ppqn / 3 >> 7) | 0x80;
*ptr++ = ppqn / 3 & 0x7f;
// Now copy the actual music data
memcpy(ptr, track, size);
ptr += size;
if (!play_once) {
// The song is meant to be looped. We achieve this by inserting just
// before the song end a jump to the song start. More precisely we abuse
// a S&M sysex, "maybe_jump" to achieve this effect. We could also
// use a set_loop sysex, but it's a bit longer, a little more complicated,
// and has no advantage either.
// First, find the track end
byte *end = ptr;
ptr -= size;
for (; ptr < end; ptr++) {
if (*ptr == 0xff && *(ptr + 1) == 0x2f)
break;
}
assert(ptr < end);
// Now insert the jump. The jump offset is measured in ticks.
// We have ppqn/3 ticks before the first note.
const int jump_offset = ppqn / 3;
memcpy(ptr, "\xf0\x13\x7d\x30\00", 5); ptr += 5; // maybe_jump
memcpy(ptr, "\x00\x00", 2); ptr += 2; // cmd -> 0 means always jump
memcpy(ptr, "\x00\x00\x00\x00", 4); ptr += 4; // track -> there is only one track, 0
memcpy(ptr, "\x00\x00\x00\x01", 4); ptr += 4; // beat -> for now, 1 (first beat)
// Ticks
*ptr++ = (byte)((jump_offset >> 12) & 0x0F);
*ptr++ = (byte)((jump_offset >> 8) & 0x0F);
*ptr++ = (byte)((jump_offset >> 4) & 0x0F);
*ptr++ = (byte)(jump_offset & 0x0F);
memcpy(ptr, "\x00\xf7", 2); ptr += 2; // sysex end marker
}
// Finally we reinsert the end of song sysex, just in case
memcpy(ptr, "\x00\xff\x2f\x00\x00", 5); ptr += 5;
return 1;
}
/* This is a sfx resource. First parse it quickly to find the parallel
* tracks.
*/
memcpy(ptr, "ASFX", 4); ptr += 4;
uint32 dw = READ_BE_UINT32(&total_size);
memcpy(ptr, &dw, 4); ptr += 4;
memcpy(ptr, "MDhd", 4); ptr += 4;
ptr[0] = 0; ptr[1] = 0; ptr[2] = 0; ptr[3] = 8;
ptr += 4;
memset(ptr, 0, 8), ptr += 8;
memcpy(ptr, "MThd", 4); ptr += 4;
ptr[0] = 0; ptr[1] = 0; ptr[2] = 0; ptr[3] = 6;
ptr += 4;
ptr[0] = 0; ptr[1] = 0; ptr[2] = 0; ptr[3] = 1; // MIDI format 0 with 1 track
ptr += 4;
*ptr++ = ppqn >> 8;
*ptr++ = ppqn & 0xFF;
memcpy(ptr, "MTrk", 4); ptr += 4;
dw = READ_BE_UINT32(&total_size);
memcpy(ptr, &dw, 4); ptr += 4;
byte current_instr[3][14];
int current_note[3];
int track_time[3];
int track_ctr = 0;
byte chunk_type = 0;
// Write a tempo change Meta event
// 473 / 4 Hz, convert to micro seconds.
memcpy(ptr, "\x00\xFF\x51\x03", 4); ptr += 4;
dw = 1000000 * ppqn * 4 / 473;
*ptr++ = (byte)((dw >> 16) & 0xFF);
*ptr++ = (byte)((dw >> 8) & 0xFF);
*ptr++ = (byte)(dw & 0xFF);
for (i = 0; i < 3; i++) {
track_time[i] = -1;
current_note[i] = -1;
}
while (size > 0) {
tracks[track_ctr] = src_ptr;
track_time[track_ctr] = 0;
track_ctr++;
while (size > 0) {
chunk_type = *(src_ptr);
if (chunk_type == 1) {
src_ptr += 15;
size -= 15;
} else if (chunk_type == 2) {
src_ptr += 11;
size -= 11;
} else if (chunk_type == 0x80) {
src_ptr ++;
size --;
} else {
break;
}
}
if (chunk_type == 0xff)
break;
src_ptr++;
}
int curtime = 0;
for (;;) {
int mintime = -1;
ch = -1;
for (i = 0; i < 3; i++) {
if (track_time[i] >= 0 &&
(mintime == -1 || mintime > track_time[i])) {
mintime = track_time[i];
ch = i;
}
}
if (mintime < 0)
break;
src_ptr = tracks[ch];
chunk_type = *(src_ptr);
if (current_note[ch] >= 0) {
delay = mintime - curtime;
curtime = mintime;
if (delay > 0x7f) {
if (delay > 0x3fff) {
*ptr++ = (delay >> 14) | 0x80;
delay &= 0x3fff;
}
*ptr++ = (delay >> 7) | 0x80;
delay &= 0x7f;
}
*ptr++ = delay;
*ptr++ = 0x80 + ch; // key off channel;
*ptr++ = current_note[ch];
*ptr++ = 0;
current_note[ch] = -1;
}
switch (chunk_type) {
case 1:
/* Instrument definition */
memcpy(current_instr[ch], src_ptr+1, 14);
src_ptr += 15;
break;
case 2:
/* tone/parammodulation */
memcpy(ptr, ADLIB_INSTR_MIDI_HACK,
sizeof(ADLIB_INSTR_MIDI_HACK));
ptr[5] += ch;
ptr[28] += ch;
ptr[92] += ch;
/* flags_1 */
ptr[30 + 0] = (current_instr[ch][3] >> 4) & 0xf;
ptr[30 + 1] = current_instr[ch][3] & 0xf;
/* oplvl_1 */
ptr[30 + 2] = (current_instr[ch][4] >> 4) & 0xf;
ptr[30 + 3] = current_instr[ch][4] & 0xf;
/* atdec_1 */
ptr[30 + 4] = ((~current_instr[ch][5]) >> 4) & 0xf;
ptr[30 + 5] = (~current_instr[ch][5]) & 0xf;
/* sustrel_1 */
ptr[30 + 6] = ((~current_instr[ch][6]) >> 4) & 0xf;
ptr[30 + 7] = (~current_instr[ch][6]) & 0xf;
/* waveform_1 */
ptr[30 + 8] = (current_instr[ch][7] >> 4) & 0xf;
ptr[30 + 9] = current_instr[ch][7] & 0xf;
/* flags_2 */
ptr[30 + 10] = (current_instr[ch][8] >> 4) & 0xf;
ptr[30 + 11] = current_instr[ch][8] & 0xf;
/* oplvl_2 */
ptr[30 + 12] = ((current_instr[ch][9]) >> 4) & 0xf;
ptr[30 + 13] = (current_instr[ch][9]) & 0xf;
/* atdec_2 */
ptr[30 + 14] = ((~current_instr[ch][10]) >> 4) & 0xf;
ptr[30 + 15] = (~current_instr[ch][10]) & 0xf;
/* sustrel_2 */
ptr[30 + 16] = ((~current_instr[ch][11]) >> 4) & 0xf;
ptr[30 + 17] = (~current_instr[ch][11]) & 0xf;
/* waveform_2 */
ptr[30 + 18] = (current_instr[ch][12] >> 4) & 0xf;
ptr[30 + 19] = current_instr[ch][12] & 0xf;
/* feedback */
ptr[30 + 20] = (current_instr[ch][2] >> 4) & 0xf;
ptr[30 + 21] = current_instr[ch][2] & 0xf;
delay = mintime - curtime;
curtime = mintime;
{
delay = convert_extraflags(ptr + 30 + 22, src_ptr + 1);
delay2 = convert_extraflags(ptr + 30 + 40, src_ptr + 6);
debug(4, "delays: %d / %d", delay, delay2);
if (delay2 >= 0 && delay2 < delay)
delay = delay2;
if (delay == -1)
delay = 0;
}
/* duration */
ptr[30 + 58] = 0; // ((delay * 17 / 63) >> 4) & 0xf;
ptr[30 + 59] = 0; // (delay * 17 / 63) & 0xf;
ptr += sizeof(ADLIB_INSTR_MIDI_HACK);
olddelay = mintime - curtime;
curtime = mintime;
if (olddelay > 0x7f) {
if (olddelay > 0x3fff) {
*ptr++ = (olddelay >> 14) | 0x80;
olddelay &= 0x3fff;
}
*ptr++ = (olddelay >> 7) | 0x80;
olddelay &= 0x7f;
}
*ptr++ = olddelay;
{
int freq = ((current_instr[ch][1] & 3) << 8)
| current_instr[ch][0];
freq <<= ((current_instr[ch][1] >> 2) & 7) + 1;
int note = -11;
while (freq >= 0x100) {
note += 12;
freq >>= 1;
}
debug(4, "Freq: %d (%x) Note: %d", freq, freq, note);
if (freq < 0x80)
note = 0;
else
note += freq2note[freq - 0x80];
debug(4, "Note: %d", note);
if (note <= 0)
note = 1;
else if (note > 127)
note = 127;
// Insert a note on event
*ptr++ = 0x90 + ch; // key on channel
*ptr++ = note;
*ptr++ = 63;
current_note[ch] = note;
track_time[ch] = curtime + delay;
}
src_ptr += 11;
break;
case 0x80:
track_time[ch] = -1;
src_ptr ++;
break;
default:
track_time[ch] = -1;
}
tracks[ch] = src_ptr;
}
/* insert end of song sysex */
memcpy(ptr, "\x00\xff\x2f\x00\x00", 5); ptr += 5;
return 1;
}
int Scumm::readSoundResourceSmallHeader(int type, int idx) {
uint32 pos, total_size, size, tag;
uint32 ad_size = 0, ad_offs = 0;
uint32 ro_size = 0, ro_offs = 0;
uint32 wa_size = 0, wa_offs = 0;
debug(4, "readSoundResourceSmallHeader(%s,%d)", resTypeFromId(type), idx);
if ((_gameId == GID_LOOM) && VAR(VAR_SOUNDCARD) == 4) {
// Roland resources in Loom are tagless
// So we add an RO tag to allow imuse to detect format
byte *ptr, *src_ptr;
ro_offs = _fileHandle.pos();
ro_size = _fileHandle.readUint16LE();
src_ptr = (byte *) calloc(ro_size - 4, 1);
_fileHandle.seek(ro_offs +4, SEEK_SET);
_fileHandle.read(src_ptr, ro_size -4);
ptr = createResource(type, idx, ro_size + 2);
memcpy(ptr, "RO", 2); ptr += 2;
memcpy(ptr, src_ptr, ro_size - 4); ptr += ro_size - 4;
return 1;
} else if (_features & GF_OLD_BUNDLE) {
wa_offs = _fileHandle.pos();
wa_size = _fileHandle.readUint16LE();
_fileHandle.seek(wa_size - 2, SEEK_CUR);
//FIXME AD resources don't exist in Atari ST and Mac versions
if (_midiDriver == MD_ADLIB) {
ad_offs = _fileHandle.pos();
ad_size = _fileHandle.readUint16LE();
}
_fileHandle.seek(4, SEEK_CUR);
total_size = wa_size + ad_size;
} else {
total_size = size = _fileHandle.readUint32LE();
tag = _fileHandle.readUint16LE();
debug(4, " tag='%c%c', size=%d",
(char) (tag & 0xff),
(char) ((tag >> 8) & 0xff), size);
if (tag == 0x4F52) { // RO
ro_size = size;
ro_offs = _fileHandle.pos();
} else {
pos = 6;
while (pos < total_size) {
size = _fileHandle.readUint32LE();
tag = _fileHandle.readUint16LE();
debug(4, " tag='%c%c', size=%d",
(char) (tag & 0xff),
(char) ((tag >> 8) & 0xff), size);
pos += size;
// MI1 and Indy3 uses one or more nested SO resources, which contains AD and WA
// resources.
if ((tag == 0x4441) && !(ad_offs)) { // AD
ad_size = size;
ad_offs = _fileHandle.pos();
} else if ((tag == 0x4157) && !(wa_offs)) { // WA
wa_size = size;
wa_offs = _fileHandle.pos();
} else { // other AD, WA and nested SO resources
if (tag == 0x4F53) { // SO
pos -= size;
size = 6;
pos += 6;
}
}
_fileHandle.seek(size - 6, SEEK_CUR);
}
}
}
if ((_midiDriver == MD_ADLIB) && ad_offs != 0) {
// AD resources have a header, instrument definitions and one MIDI track.
// We build an 'ADL ' resource from that:
// 8 bytes resource header
// 16 bytes MDhd header
// 14 bytes MThd header
// 8 bytes MTrk header
// 7 bytes MIDI tempo sysex
// + some default instruments
byte *ptr;
if (_features & GF_OLD_BUNDLE) {
ptr = (byte *) calloc(ad_size - 4, 1);
_fileHandle.seek(ad_offs + 4, SEEK_SET);
_fileHandle.read(ptr, ad_size - 4);
return convertADResource(type, idx, ptr, ad_size - 4);
} else {
ptr = (byte *) calloc(ad_size - 6, 1);
_fileHandle.seek(ad_offs, SEEK_SET);
_fileHandle.read(ptr, ad_size - 6);
return convertADResource(type, idx, ptr, ad_size - 6);
}
} else if (((_midiDriver == MD_PCJR) || (_midiDriver == MD_PCSPK)) && wa_offs != 0) {
if (_features & GF_OLD_BUNDLE) {
_fileHandle.seek(wa_offs, SEEK_SET);
_fileHandle.read(createResource(type, idx, wa_size), wa_size);
} else {
_fileHandle.seek(wa_offs - 6, SEEK_SET);
_fileHandle.read(createResource(type, idx, wa_size + 6), wa_size + 6);
}
return 1;
} else if (ro_offs != 0) {
_fileHandle.seek(ro_offs - 2, SEEK_SET);
_fileHandle.read(createResource(type, idx, ro_size + 2), ro_size + 2);
return 1;
}
res.roomoffs[type][idx] = 0xFFFFFFFF;
return 0;
}
int Scumm::getResourceRoomNr(int type, int idx) {
if (type == rtRoom)
return idx;
return res.roomno[type][idx];
}
int Scumm::getResourceSize(int type, int idx) {
byte *ptr = getResourceAddress(type, idx);
MemBlkHeader *hdr = (MemBlkHeader *)(ptr - sizeof(MemBlkHeader));
return hdr->size;
}
byte *Scumm::getResourceAddress(int type, int idx) {
byte *ptr;
CHECK_HEAP
if (!validateResource("getResourceAddress", type, idx))
return NULL;
if (!res.address[type]) {
debug(9, "getResourceAddress(%s,%d), res.address[type] == NULL", resTypeFromId(type), idx);
return NULL;
}
if (res.mode[type] && !res.address[type][idx]) {
ensureResourceLoaded(type, idx);
}
if (!(ptr = (byte *)res.address[type][idx])) {
debug(9, "getResourceAddress(%s,%d) == NULL", resTypeFromId(type), idx);
return NULL;
}
setResourceCounter(type, idx, 1);
debug(9, "getResourceAddress(%s,%d) == %p", resTypeFromId(type), idx, ptr + sizeof(MemBlkHeader));
return ptr + sizeof(MemBlkHeader);
}
byte *Scumm::getStringAddress(int i) {
byte *b = getResourceAddress(rtString, i);
if (!b)
return NULL;
if (_features & GF_NEW_OPCODES)
return ((ArrayHeader *)b)->data;
return b;
}
byte *Scumm::getStringAddressVar(int i) {
byte *addr;
addr = getResourceAddress(rtString, _scummVars[i]);
if (addr == NULL)
// as this is used for string mapping in the gui
// it must be allowed to return NULL
// error("NULL string var %d slot %d", i, _scummVars[i]);
return NULL;
if (_features & GF_NEW_OPCODES)
return ((ArrayHeader *)addr)->data;
return (addr);
}
void Scumm::setResourceCounter(int type, int idx, byte flag) {
res.flags[type][idx] &= ~RF_USAGE;
res.flags[type][idx] |= flag;
}
/* 2 bytes safety area to make "precaching" of bytes in the gdi drawer easier */
#define SAFETY_AREA 2
byte *Scumm::createResource(int type, int idx, uint32 size) {
byte *ptr;
CHECK_HEAP
debug(9, "createResource(%s,%d,%d)", resTypeFromId(type), idx, size);
if (!validateResource("allocating", type, idx))
return NULL;
nukeResource(type, idx);
expireResources(size);
CHECK_HEAP
ptr = (byte *)calloc(size + sizeof(MemBlkHeader) + SAFETY_AREA, 1);
if (ptr == NULL) {
error("Out of memory while allocating %d", size);
}
_allocatedSize += size;
res.address[type][idx] = ptr;
((MemBlkHeader *)ptr)->size = size;
setResourceCounter(type, idx, 1);
return ptr + sizeof(MemBlkHeader); /* skip header */
}
bool Scumm::validateResource(const char *str, int type, int idx) const {
if (type < rtFirst || type > rtLast || (uint) idx >= (uint) res.num[type]) {
warning("%s Illegal Glob type %s (%d) num %d", str, resTypeFromId(type), type, idx);
return false;
}
return true;
}
void Scumm::nukeResource(int type, int idx) {
byte *ptr;
CHECK_HEAP
if (!res.address[type])
return;
// FIXME hack around insanely high string resource idx's
if ((_features & GF_HUMONGOUS) && (type == 7 && idx > res.num[7])) {
warning("nukeResource: type %d index %d > max %d", type, idx,
res.num[7]);
return;
}
assert(idx >= 0 && idx < res.num[type]);
if ((ptr = res.address[type][idx]) != NULL) {
debug(9, "nukeResource(%s,%d)", resTypeFromId(type), idx);
res.address[type][idx] = 0;
res.flags[type][idx] = 0;
_allocatedSize -= ((MemBlkHeader *)ptr)->size;
free(ptr);
}
}
const byte *Scumm::findResourceData(uint32 tag, const byte *ptr) {
if (_features & GF_OLD_BUNDLE)
error("findResourceData must not be used in GF_OLD_BUNDLE games");
else if (_features & GF_SMALL_HEADER)
ptr = findResourceSmall(tag, ptr);
else
ptr = findResource(tag, ptr);
if (ptr == NULL)
return NULL;
return ptr + _resourceHeaderSize;
}
int Scumm::getResourceDataSize(const byte *ptr) const {
if (ptr == NULL)
return 0;
if (_features & GF_OLD_BUNDLE)
return READ_LE_UINT16(ptr) - 4;
else if (_features & GF_SMALL_HEADER)
return READ_LE_UINT32(ptr) - 6;
else
return READ_BE_UINT32(ptr - 4) - 8;
}
void Scumm::lock(int type, int i) {
if (!validateResource("Locking", type, i))
return;
res.flags[type][i] |= RF_LOCK;
// debug(1, "locking %d,%d", type, i);
}
void Scumm::unlock(int type, int i) {
if (!validateResource("Unlocking", type, i))
return;
res.flags[type][i] &= ~RF_LOCK;
// debug(1, "unlocking %d,%d", type, i);
}
bool Scumm::isResourceInUse(int type, int i) const {
if (!validateResource("isResourceInUse", type, i))
return false;
switch (type) {
case rtRoom:
return _roomResource == (byte)i;
case rtRoomScripts:
return _roomResource == (byte)i;
case rtScript:
return isScriptInUse(i);
case rtCostume:
return isCostumeInUse(i);
case rtSound:
return _sound->isSoundActive(i);
default:
return false;
}
}
void Scumm::increaseResourceCounter() {
int i, j;
byte counter;
for (i = rtFirst; i <= rtLast; i++) {
for (j = res.num[i]; --j >= 0;) {
counter = res.flags[i][j] & RF_USAGE;
if (counter && counter < RF_USAGE_MAX) {
setResourceCounter(i, j, counter + 1);
}
}
}
}
void Scumm::expireResources(uint32 size) {
int i, j;
byte flag;
byte best_counter;
int best_type, best_res = 0;
uint32 oldAllocatedSize;
// return;
if (_expire_counter != 0xFF) {
_expire_counter = 0xFF;
increaseResourceCounter();
}
if (size + _allocatedSize < _maxHeapThreshold)
return;
oldAllocatedSize = _allocatedSize;
do {
best_type = 0;
best_counter = 2;
for (i = rtFirst; i <= rtLast; i++)
if (res.mode[i]) {
for (j = res.num[i]; --j >= 0;) {
flag = res.flags[i][j];
if (!(flag & RF_LOCK) && flag >= best_counter && res.address[i][j] && !isResourceInUse(i, j)) {
best_counter = flag;
best_type = i;
best_res = j;
}
}
}
if (!best_type)
break;
nukeResource(best_type, best_res);
} while (size + _allocatedSize > _minHeapThreshold);
increaseResourceCounter();
debug(5, "Expired resources, mem %d -> %d", oldAllocatedSize, _allocatedSize);
}
void Scumm::freeResources() {
int i, j;
for (i = rtFirst; i <= rtLast; i++) {
for (j = res.num[i]; --j >= 0;) {
if (isResourceLoaded(i, j))
nukeResource(i, j);
}
free(res.address[i]);
free(res.flags[i]);
free(res.roomno[i]);
free(res.roomoffs[i]);
}
}
void Scumm::loadPtrToResource(int type, int resindex, const byte *source) {
byte *alloced;
int i, len;
nukeResource(type, resindex);
len = resStrLen(source) + 1;
if (len <= 0)
return;
alloced = createResource(type, resindex, len);
if (!source) {
alloced[0] = fetchScriptByte();
for (i = 1; i < len; i++)
alloced[i] = *_scriptPointer++;
} else {
for (i = 0; i < len; i++)
alloced[i] = source[i];
}
}
bool Scumm::isResourceLoaded(int type, int idx) const {
if (!validateResource("isLoaded", type, idx))
return false;
return res.address[type][idx] != NULL;
}
void Scumm::resourceStats() {
int i, j;
uint32 lockedSize = 0, lockedNum = 0;
byte flag;
for (i = rtFirst; i <= rtLast; i++)
for (j = res.num[i]; --j >= 0;) {
flag = res.flags[i][j];
if (flag & RF_LOCK && res.address[i][j]) {
lockedSize += ((MemBlkHeader *)res.address[i][j])->size;
lockedNum++;
}
}
debug(1, "Total allocated size=%d, locked=%d(%d)", _allocatedSize, lockedSize, lockedNum);
}
void Scumm::readMAXS() {
if (_version == 8) { // CMI
_fileHandle.seek(50 + 50, SEEK_CUR); // 176 - 8
_numVariables = _fileHandle.readUint32LE(); // 1500
_numBitVariables = _fileHandle.readUint32LE(); // 2048
_fileHandle.readUint32LE(); // 40
_numScripts = _fileHandle.readUint32LE(); // 458
_numSounds = _fileHandle.readUint32LE(); // 789
_numCharsets = _fileHandle.readUint32LE(); // 1
_numCostumes = _fileHandle.readUint32LE(); // 446
_numRooms = _fileHandle.readUint32LE(); // 95
_fileHandle.readUint32LE(); // 80
_numGlobalObjects = _fileHandle.readUint32LE(); // 1401
_fileHandle.readUint32LE(); // 60
_numLocalObjects = _fileHandle.readUint32LE(); // 200
_numNewNames = _fileHandle.readUint32LE(); // 100
_numFlObject = _fileHandle.readUint32LE(); // 128
_numInventory = _fileHandle.readUint32LE(); // 80
_numArray = _fileHandle.readUint32LE(); // 200
_numVerbs = _fileHandle.readUint32LE(); // 50
_objectRoomTable = (byte *)calloc(_numGlobalObjects, 1);
_numGlobalScripts = 2000;
_shadowPaletteSize = NUM_SHADOW_PALETTE * 256;
} else if (_version == 7) {
_fileHandle.seek(50 + 50, SEEK_CUR);
_numVariables = _fileHandle.readUint16LE();
_numBitVariables = _fileHandle.readUint16LE();
_fileHandle.readUint16LE(); // 40 in FT; 16 in Dig
_numGlobalObjects = _fileHandle.readUint16LE();
_numLocalObjects = _fileHandle.readUint16LE();
_numNewNames = _fileHandle.readUint16LE();
_numVerbs = _fileHandle.readUint16LE();
_numFlObject = _fileHandle.readUint16LE();
_numInventory = _fileHandle.readUint16LE();
_numArray = _fileHandle.readUint16LE();
_numRooms = _fileHandle.readUint16LE();
_numScripts = _fileHandle.readUint16LE();
_numSounds = _fileHandle.readUint16LE();
_numCharsets = _fileHandle.readUint16LE();
_numCostumes = _fileHandle.readUint16LE();
_objectRoomTable = (byte *)calloc(_numGlobalObjects, 1);
_numGlobalScripts = 2000;
_shadowPaletteSize = NUM_SHADOW_PALETTE * 256;
// FIXME better check for the more recent windows based humongous games...
} else if (_gameId == GID_PJSDEMO) {
_fileHandle.readUint16LE();
_numVariables = _fileHandle.readUint16LE();
_numBitVariables = _fileHandle.readUint16LE();
_numLocalObjects = _fileHandle.readUint16LE();
_numArray = _fileHandle.readUint16LE();
_fileHandle.readUint16LE();
_fileHandle.readUint16LE();
_numFlObject = _fileHandle.readUint16LE();
_numInventory = _fileHandle.readUint16LE();
_numRooms = _fileHandle.readUint16LE();
_numScripts = _fileHandle.readUint16LE();
_numSounds = _fileHandle.readUint16LE();
_numCharsets = _fileHandle.readUint16LE();
_numCostumes = _fileHandle.readUint16LE();
_numGlobalObjects = _fileHandle.readUint16LE();
_fileHandle.readUint16LE();
_objectRoomTable = (byte *)calloc(_numGlobalObjects * 4, 1);
_numGlobalScripts = 200;
_shadowPaletteSize = 256;
} else if (_version == 6 && _gameId != GID_PJSDEMO) {
_numVariables = _fileHandle.readUint16LE();
_fileHandle.readUint16LE(); // 16 in Sam/DOTT
_numBitVariables = _fileHandle.readUint16LE();
_numLocalObjects = _fileHandle.readUint16LE();
_numArray = _fileHandle.readUint16LE();
_fileHandle.readUint16LE(); // 0 in Sam/DOTT
_numVerbs = _fileHandle.readUint16LE();
_numFlObject = _fileHandle.readUint16LE();
_numInventory = _fileHandle.readUint16LE();
_numRooms = _fileHandle.readUint16LE();
_numScripts = _fileHandle.readUint16LE();
_numSounds = _fileHandle.readUint16LE();
_numCharsets = _fileHandle.readUint16LE();
_numCostumes = _fileHandle.readUint16LE();
_numGlobalObjects = _fileHandle.readUint16LE();
_numNewNames = 50;
_objectRoomTable = NULL;
_numGlobalScripts = 200;
_shadowPaletteSize = 256;
} else {
_numVariables = _fileHandle.readUint16LE(); // 800
_fileHandle.readUint16LE(); // 16
_numBitVariables = _fileHandle.readUint16LE(); // 2048
_numLocalObjects = _fileHandle.readUint16LE(); // 200
_numArray = 50;
_numVerbs = 100;
_numNewNames = 0;
_objectRoomTable = NULL;
_fileHandle.readUint16LE(); // 50
_numCharsets = _fileHandle.readUint16LE(); // 9
_fileHandle.readUint16LE(); // 100
_fileHandle.readUint16LE(); // 50
_numInventory = _fileHandle.readUint16LE(); // 80
_numGlobalScripts = 200;
_shadowPaletteSize = 256;
_numFlObject = 50;
}
if (_shadowPaletteSize)
_shadowPalette = (byte *)calloc(_shadowPaletteSize, 1);
allocateArrays();
_dynamicRoomOffsets = true;
}
void Scumm::allocateArrays() {
// Note: Buffers are now allocated in scummMain to allow for
// early GUI init.
_objectOwnerTable = (byte *)calloc(_numGlobalObjects, 1);
_objectStateTable = (byte *)calloc(_numGlobalObjects, 1);
_classData = (uint32 *)calloc(_numGlobalObjects, sizeof(uint32));
_newNames = (uint16 *)calloc(_numNewNames, sizeof(uint16));
_inventory = (uint16 *)calloc(_numInventory, sizeof(uint16));
_verbs = (VerbSlot *)calloc(_numVerbs, sizeof(VerbSlot));
_objs = (ObjectData *)calloc(_numLocalObjects, sizeof(ObjectData));
debug(2, "Allocated %d space in numObjects", _numLocalObjects);
_scummVars = (int32 *)calloc(_numVariables, sizeof(int32));
_bitVars = (byte *)calloc(_numBitVariables >> 3, 1);
allocResTypeData(rtCostume, (_features & GF_NEW_COSTUMES) ? MKID('AKOS') : MKID('COST'),
_numCostumes, "costume", 1);
allocResTypeData(rtRoom, MKID('ROOM'), _numRooms, "room", 1);
allocResTypeData(rtRoomScripts, MKID('RMSC'), _numRooms, "room script", 1);
allocResTypeData(rtSound, MKID('SOUN'), _numSounds, "sound", 1);
allocResTypeData(rtScript, MKID('SCRP'), _numScripts, "script", 1);
allocResTypeData(rtCharset, MKID('CHAR'), _numCharsets, "charset", 1);
allocResTypeData(rtObjectName, MKID('NONE'), _numNewNames, "new name", 0);
allocResTypeData(rtInventory, MKID('NONE'), _numInventory, "inventory", 0);
allocResTypeData(rtTemp, MKID('NONE'), 10, "temp", 0);
allocResTypeData(rtScaleTable, MKID('NONE'), 5, "scale table", 0);
allocResTypeData(rtActorName, MKID('NONE'), _numActors, "actor name", 0);
allocResTypeData(rtVerb, MKID('NONE'), _numVerbs, "verb", 0);
allocResTypeData(rtString, MKID('NONE'), _numArray, "array", 0);
allocResTypeData(rtFlObject, MKID('NONE'), _numFlObject, "flobject", 0);
allocResTypeData(rtMatrix, MKID('NONE'), 10, "boxes", 0);
}
bool Scumm::isGlobInMemory(int type, int idx) const{
if (!validateResource("isGlobInMemory", type, idx))
return false;
return res.address[type][idx] != NULL;
}
void Scumm::dumpResource(const char *tag, int idx, const byte *ptr, int length) {
char buf[256];
File out;
uint32 size;
if (length >= 0)
size = length;
else if (_features & GF_OLD_BUNDLE)
size = READ_LE_UINT16(ptr);
else if (_features & GF_SMALL_HEADER)
size = READ_LE_UINT32(ptr);
else
size = READ_BE_UINT32(ptr + 4);
#if defined(MACOS_CARBON)
sprintf(buf, ":dumps:%s%d.dmp", tag, idx);
#else
sprintf(buf, "dumps/%s%d.dmp", tag, idx);
#endif
out.open(buf, "", 1);
if (out.isOpen() == false) {
out.open(buf, "", 2);
if (out.isOpen() == false)
return;
out.write(ptr, size);
}
out.close();
}
ResourceIterator::ResourceIterator(const byte *searchin, bool smallHeader)
: _ptr(searchin), _smallHeader(smallHeader) {
assert(searchin);
if (_smallHeader) {
_size = READ_LE_UINT32(searchin);
_pos = 6;
_ptr = searchin + 6;
} else {
_size = READ_BE_UINT32(searchin + 4);
_pos = 8;
_ptr = searchin + 8;
}
}
const byte *ResourceIterator::findNext(uint32 tag) {
uint32 size = 0;
const byte *result = 0;
if (_smallHeader) {
uint16 smallTag = newTag2Old(tag);
do {
if (_pos >= _size)
return 0;
result = _ptr;
size = READ_LE_UINT32(result);
if ((int32)size <= 0)
return 0; // Avoid endless loop
_pos += size;
_ptr += size;
} while (READ_LE_UINT16(result + 4) != smallTag);
} else {
do {
if (_pos >= _size)
return 0;
result = _ptr;
size = READ_BE_UINT32(result + 4);
if ((int32)size <= 0)
return 0; // Avoid endless loop
_pos += size;
_ptr += size;
} while (READ_UINT32(result) != tag);
}
return result;
}
const byte *findResource(uint32 tag, const byte *searchin) {
uint32 curpos, totalsize, size;
assert(searchin);
searchin += 4;
totalsize = READ_BE_UINT32(searchin);
curpos = 8;
searchin += 4;
while (curpos < totalsize) {
if (READ_UINT32(searchin) == tag)
return searchin;
size = READ_BE_UINT32(searchin + 4);
if ((int32)size <= 0) {
error("(%c%c%c%c) Not found in %d... illegal block len %d",
tag & 0xFF, (tag >> 8) & 0xFF, (tag >> 16) & 0xFF, (tag >> 24) & 0xFF, 0, size);
return NULL;
}
curpos += size;
searchin += size;
}
return NULL;
}
const byte *findResourceSmall(uint32 tag, const byte *searchin) {
uint32 curpos, totalsize, size;
uint16 smallTag;
smallTag = newTag2Old(tag);
if (smallTag == 0)
return NULL;
assert(searchin);
totalsize = READ_LE_UINT32(searchin);
searchin += 6;
curpos = 6;
while (curpos < totalsize) {
size = READ_LE_UINT32(searchin);
if (READ_LE_UINT16(searchin + 4) == smallTag)
return searchin;
if ((int32)size <= 0) {
error("(%c%c%c%c) Not found in %d... illegal block len %d",
tag & 0xFF, (tag >> 8) & 0xFF, (tag >> 16) & 0xFF, (tag >> 24) & 0xFF, 0, size);
return NULL;
}
curpos += size;
searchin += size;
}
return NULL;
}
uint16 newTag2Old(uint32 oldTag) {
switch (oldTag) {
case (MKID('RMHD')):
return (0x4448); // HD
case (MKID('IM00')):
return (0x4D42); // BM
case (MKID('EXCD')):
return (0x5845); // EX
case (MKID('ENCD')):
return (0x4E45); // EN
case (MKID('SCAL')):
return (0x4153); // SA
case (MKID('LSCR')):
return (0x534C); // LS
case (MKID('OBCD')):
return (0x434F); // OC
case (MKID('OBIM')):
return (0x494F); // OI
case (MKID('SMAP')):
return (0x4D42); // BM
case (MKID('CLUT')):
return (0x4150); // PA
case (MKID('BOXD')):
return (0x5842); // BX
case (MKID('CYCL')):
return (0x4343); // CC
default:
return (0);
}
}
const char *resTypeFromId(int id) {
static char buf[100];
switch (id) {
case rtRoom:
return "Room";
case rtScript:
return "Script";
case rtCostume:
return "Costume";
case rtSound:
return "Sound";
case rtInventory:
return "Inventory";
case rtCharset:
return "Charset";
case rtString:
return "String";
case rtVerb:
return "Verb";
case rtActorName:
return "ActorName";
case rtBuffer:
return "Buffer";
case rtScaleTable:
return "ScaleTable";
case rtTemp:
return "Temp";
case rtFlObject:
return "FlObject";
case rtMatrix:
return "Matrix";
case rtBox:
return "Box";
case rtLast:
return "Last";
case rtNumTypes:
return "NumTypes";
default:
sprintf(buf, "%d", id);
return buf;
}
}
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