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7b8837cda7
scummvm/engines/sci/resource.cpp
Max Horn 7b8837cda7 SCI: Simplify appending string 'seeker' to sierraId 
svn-id: r49244
2010-05-26 15:41:50 +00:00

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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* $URL$
* $Id$
*
*/
// Resource library
#include "common/file.h"
#include "common/macresman.h"
#include "sci/resource.h"
#include "sci/util.h"
namespace Sci {
enum {
SCI0_RESMAP_ENTRIES_SIZE = 6,
SCI1_RESMAP_ENTRIES_SIZE = 6,
SCI11_RESMAP_ENTRIES_SIZE = 5
};
/** resource type for SCI1 resource.map file */
struct resource_index_t {
uint16 wOffset;
uint16 wSize;
};
struct ResourceSource {
ResSourceType source_type;
bool scanned;
Common::String location_name; // FIXME: Replace by FSNode ?
const Common::FSNode *resourceFile;
int volume_number;
ResourceSource *associated_map;
uint32 audioCompressionType;
int32 *audioCompressionOffsetMapping;
Common::MacResManager macResMan;
};
//////////////////////////////////////////////////////////////////////
static SciVersion s_sciVersion = SCI_VERSION_NONE; // FIXME: Move this inside a suitable class, e.g. SciEngine
SciVersion getSciVersion() {
assert(s_sciVersion != SCI_VERSION_NONE);
return s_sciVersion;
}
const char *getSciVersionDesc(SciVersion version) {
switch (version) {
case SCI_VERSION_NONE:
return "Invalid SCI version";
case SCI_VERSION_0_EARLY:
return "Early SCI0";
case SCI_VERSION_0_LATE:
return "Late SCI0";
case SCI_VERSION_01:
return "SCI01";
case SCI_VERSION_1_EGA:
return "SCI1 EGA";
case SCI_VERSION_1_EARLY:
return "Early SCI1";
case SCI_VERSION_1_MIDDLE:
return "Middle SCI1";
case SCI_VERSION_1_LATE:
return "Late SCI1";
case SCI_VERSION_1_1:
return "SCI1.1";
case SCI_VERSION_2:
return "SCI2";
case SCI_VERSION_2_1:
return "SCI2.1";
case SCI_VERSION_3:
return "SCI3";
default:
return "Unknown";
}
}
//////////////////////////////////////////////////////////////////////
#undef SCI_REQUIRE_RESOURCE_FILES
//#define SCI_VERBOSE_resMan 1
static const char *sci_error_types[] = {
"No error",
"I/O error",
"Resource is empty (size 0)",
"resource.map entry is invalid",
"resource.map file not found",
"No resource files found",
"Unknown compression method",
"Decompression failed: Decompression buffer overflow",
"Decompression failed: Sanity check failed",
"Decompression failed: Resource too big",
"SCI version is unsupported"
};
// These are the 20 resource types supported by SCI1.1
static const char *resourceTypeNames[] = {
"view", "pic", "script", "text", "sound",
"memory", "vocab", "font", "cursor",
"patch", "bitmap", "palette", "cdaudio",
"audio", "sync", "message", "map", "heap",
"audio36", "sync36", "", "", "robot"
};
static const char *resourceTypeSuffixes[] = {
"v56", "p56", "scr", "tex", "snd",
" ", "voc", "fon", "cur", "pat",
"bit", "pal", "cda", "aud", "syn",
"msg", "map", "hep", "aud", "syn",
"trn", " ", "rbt"
};
const char *getResourceTypeName(ResourceType restype) {
if (restype != kResourceTypeInvalid)
return resourceTypeNames[restype];
else
return "invalid";
}
//-- Resource main functions --
Resource::Resource() {
data = NULL;
size = 0;
_fileOffset = 0;
_status = kResStatusNoMalloc;
_lockers = 0;
_source = NULL;
_header = NULL;
_headerSize = 0;
}
Resource::~Resource() {
delete[] data;
if (_source && _source->source_type == kSourcePatch)
delete _source;
}
void Resource::unalloc() {
delete[] data;
data = NULL;
_status = kResStatusNoMalloc;
}
void Resource::writeToStream(Common::WriteStream *stream) const {
stream->writeByte(_id.type | 0x80); // 0x80 is required by old sierra sci, otherwise it wont accept the patch file
stream->writeByte(_headerSize);
if (_headerSize > 0)
stream->write(_header, _headerSize);
stream->write(data, size);
}
uint32 Resource::getAudioCompressionType() {
return _source->audioCompressionType;
}
//-- resMan helper functions --
// Resource source list management
ResourceSource *ResourceManager::addExternalMap(const char *file_name, int volume_nr) {
ResourceSource *newsrc = new ResourceSource();
newsrc->source_type = kSourceExtMap;
newsrc->location_name = file_name;
newsrc->resourceFile = 0;
newsrc->scanned = false;
newsrc->associated_map = NULL;
newsrc->volume_number = volume_nr;
_sources.push_back(newsrc);
return newsrc;
}
ResourceSource *ResourceManager::addExternalMap(const Common::FSNode *mapFile) {
ResourceSource *newsrc = new ResourceSource();
newsrc->source_type = kSourceExtMap;
newsrc->location_name = mapFile->getName();
newsrc->resourceFile = mapFile;
newsrc->scanned = false;
newsrc->associated_map = NULL;
newsrc->volume_number = 0;
_sources.push_back(newsrc);
return newsrc;
}
ResourceSource *ResourceManager::addSource(ResourceSource *map, ResSourceType type, const char *filename, int number) {
ResourceSource *newsrc = new ResourceSource();
newsrc->source_type = type;
newsrc->scanned = false;
newsrc->location_name = filename;
newsrc->resourceFile = 0;
newsrc->volume_number = number;
newsrc->associated_map = map;
newsrc->audioCompressionType = 0;
newsrc->audioCompressionOffsetMapping = NULL;
if (type == kSourceAudioVolume)
checkIfAudioVolumeIsCompressed(newsrc);
_sources.push_back(newsrc);
return newsrc;
}
ResourceSource *ResourceManager::addSource(ResourceSource *map, ResSourceType type, const Common::FSNode *resFile, int number) {
ResourceSource *newsrc = new ResourceSource();
newsrc->source_type = type;
newsrc->scanned = false;
newsrc->location_name = resFile->getName();
newsrc->resourceFile = resFile;
newsrc->volume_number = number;
newsrc->associated_map = map;
newsrc->audioCompressionType = 0;
newsrc->audioCompressionOffsetMapping = NULL;
if (type == kSourceAudioVolume)
checkIfAudioVolumeIsCompressed(newsrc);
_sources.push_back(newsrc);
return newsrc;
}
ResourceSource *ResourceManager::addPatchDir(const char *dirname) {
ResourceSource *newsrc = new ResourceSource();
newsrc->source_type = kSourceDirectory;
newsrc->scanned = false;
newsrc->location_name = dirname;
_sources.push_back(newsrc);
return 0;
}
ResourceSource *ResourceManager::getVolume(ResourceSource *map, int volume_nr) {
for (Common::List<ResourceSource *>::iterator it = _sources.begin(); it != _sources.end(); ++it) {
ResourceSource *src = *it;
if ((src->source_type == kSourceVolume || src->source_type == kSourceAudioVolume)
&& src->associated_map == map && src->volume_number == volume_nr)
return src;
}
return NULL;
}
// Resource manager constructors and operations
void ResourceManager::checkIfAudioVolumeIsCompressed(ResourceSource *source) {
Common::File *file = getVolumeFile(source->location_name.c_str());
if (!file) {
warning("Failed to open %s", source->location_name.c_str());
return;
}
file->seek(0, SEEK_SET);
uint32 compressionType = file->readUint32BE();
switch (compressionType) {
case MKID_BE('MP3 '):
case MKID_BE('OGG '):
case MKID_BE('FLAC'):
// Detected a compressed audio volume
source->audioCompressionType = compressionType;
// Now read the whole offset mapping table for later usage
int32 recordCount = file->readUint32LE();
if (!recordCount)
error("compressed audio volume doesn't contain any entries!");
int32 *offsetMapping = new int32[(recordCount + 1) * 2];
source->audioCompressionOffsetMapping = offsetMapping;
for (int recordNo = 0; recordNo < recordCount; recordNo++) {
*offsetMapping++ = file->readUint32LE();
*offsetMapping++ = file->readUint32LE();
}
// Put ending zero
*offsetMapping++ = 0;
*offsetMapping++ = file->size();
}
}
bool ResourceManager::loadPatch(Resource *res, Common::File &file) {
// We assume that the resource type matches res->type
// We also assume that the current file position is right at the actual data (behind resourceid/headersize byte)
res->data = new byte[res->size];
if (res->_headerSize > 0)
res->_header = new byte[res->_headerSize];
if ((res->data == NULL) || ((res->_headerSize > 0) && (res->_header == NULL))) {
error("Can't allocate %d bytes needed for loading %s", res->size + res->_headerSize, res->_id.toString().c_str());
}
unsigned int really_read;
if (res->_headerSize > 0) {
really_read = file.read(res->_header, res->_headerSize);
if (really_read != res->_headerSize)
error("Read %d bytes from %s but expected %d", really_read, res->_id.toString().c_str(), res->_headerSize);
}
really_read = file.read(res->data, res->size);
if (really_read != res->size)
error("Read %d bytes from %s but expected %d", really_read, res->_id.toString().c_str(), res->size);
res->_status = kResStatusAllocated;
return true;
}
bool ResourceManager::loadFromPatchFile(Resource *res) {
Common::File file;
const char *filename = res->_source->location_name.c_str();
if (file.open(filename) == false) {
warning("Failed to open patch file %s", filename);
res->unalloc();
return false;
}
// Skip resourceid and header size byte
file.seek(2, SEEK_SET);
return loadPatch(res, file);
}
bool ResourceManager::loadFromWaveFile(Resource *res, Common::File &file) {
res->data = new byte[res->size];
uint32 really_read = file.read(res->data, res->size);
if (really_read != res->size)
error("Read %d bytes from %s but expected %d", really_read, res->_id.toString().c_str(), res->size);
res->_status = kResStatusAllocated;
return true;
}
bool ResourceManager::loadFromAudioVolumeSCI11(Resource *res, Common::File &file) {
// Check for WAVE files here
uint32 riffTag = file.readUint32BE();
if (riffTag == MKID_BE('RIFF')) {
res->_headerSize = 0;
res->size = file.readUint32LE();
file.seek(-8, SEEK_CUR);
return loadFromWaveFile(res, file);
}
file.seek(-4, SEEK_CUR);
ResourceType type = (ResourceType)(file.readByte() & 0x7f);
if (((res->_id.type == kResourceTypeAudio || res->_id.type == kResourceTypeAudio36) && (type != kResourceTypeAudio))
|| ((res->_id.type == kResourceTypeSync || res->_id.type == kResourceTypeSync36) && (type != kResourceTypeSync))) {
warning("Resource type mismatch loading %s from %s", res->_id.toString().c_str(), file.getName());
res->unalloc();
return false;
}
res->_headerSize = file.readByte();
if (type == kResourceTypeAudio) {
if (res->_headerSize != 11 && res->_headerSize != 12) {
warning("Unsupported audio header");
res->unalloc();
return false;
}
// Load sample size
file.seek(7, SEEK_CUR);
res->size = file.readUint32LE();
// Adjust offset to point at the header data again
file.seek(-11, SEEK_CUR);
}
return loadPatch(res, file);
}
bool ResourceManager::loadFromAudioVolumeSCI1(Resource *res, Common::File &file) {
res->data = new byte[res->size];
if (res->data == NULL) {
error("Can't allocate %d bytes needed for loading %s", res->size, res->_id.toString().c_str());
}
unsigned int really_read = file.read(res->data, res->size);
if (really_read != res->size)
warning("Read %d bytes from %s but expected %d", really_read, res->_id.toString().c_str(), res->size);
res->_status = kResStatusAllocated;
return true;
}
Common::File *ResourceManager::getVolumeFile(const char *filename) {
Common::List<Common::File *>::iterator it = _volumeFiles.begin();
Common::File *file;
// check if file is already opened
while (it != _volumeFiles.end()) {
file = *it;
if (scumm_stricmp(file->getName(), filename) == 0) {
// move file to top
if (it != _volumeFiles.begin()) {
_volumeFiles.erase(it);
_volumeFiles.push_front(file);
}
return file;
}
++it;
}
// adding a new file
file = new Common::File;
if (file->open(filename)) {
if (_volumeFiles.size() == MAX_OPENED_VOLUMES) {
it = --_volumeFiles.end();
delete *it;
_volumeFiles.erase(it);
}
_volumeFiles.push_front(file);
return file;
}
// failed
delete file;
return NULL;
}
static uint32 resTypeToMacTag(ResourceType type);
void ResourceManager::loadResource(Resource *res) {
if (res->_source->source_type == kSourcePatch && loadFromPatchFile(res))
return;
if (res->_source->source_type == kSourceMacResourceFork) {
Common::SeekableReadStream *stream = res->_source->macResMan.getResource(resTypeToMacTag(res->_id.type), res->_id.number);
if (!stream)
error("Could not get Mac resource fork resource: %d %d", res->_id.type, res->_id.number);
int error = decompress(res, stream);
if (error) {
warning("Error %d occured while reading %s from Mac resource file: %s",
error, res->_id.toString().c_str(), sci_error_types[error]);
res->unalloc();
}
return;
}
Common::File *file;
// Either loading from volume or patch loading failed
file = getVolumeFile(res->_source->location_name.c_str());
if (!file) {
warning("Failed to open %s", res->_source->location_name.c_str());
res->unalloc();
return;
}
switch(res->_source->source_type) {
case kSourceWave:
file->seek(res->_fileOffset, SEEK_SET);
loadFromWaveFile(res, *file);
return;
case kSourceAudioVolume:
if (res->_source->audioCompressionType) {
// this file is compressed, so lookup our offset in the offset-translation table and get the new offset
// also calculate the compressed size by using the next offset
int32 *mappingTable = res->_source->audioCompressionOffsetMapping;
int32 compressedOffset = 0;
do {
if (*mappingTable == res->_fileOffset) {
mappingTable++;
compressedOffset = *mappingTable;
// Go to next compressed offset and use that to calculate size of compressed sample
switch (res->_id.type) {
case kResourceTypeSync:
case kResourceTypeSync36:
// we should already have a (valid) size
break;
default:
mappingTable += 2;
res->size = *mappingTable - compressedOffset;
}
break;
}
mappingTable += 2;
} while (*mappingTable);
if (!compressedOffset)
error("could not translate offset to compressed offset in audio volume");
file->seek(compressedOffset, SEEK_SET);
switch (res->_id.type) {
case kResourceTypeAudio:
case kResourceTypeAudio36:
// Directly read the stream, compressed audio wont have resource type id and header size for SCI1.1
loadFromAudioVolumeSCI1(res, *file);
return;
default:
break;
}
} else {
// original file, directly seek to given offset and get SCI1/SCI1.1 audio resource
file->seek(res->_fileOffset, SEEK_SET);
}
if (getSciVersion() < SCI_VERSION_1_1)
loadFromAudioVolumeSCI1(res, *file);
else
loadFromAudioVolumeSCI11(res, *file);
return;
default:
file->seek(res->_fileOffset, SEEK_SET);
int error = decompress(res, file);
if (error) {
warning("Error %d occured while reading %s from resource file: %s",
error, res->_id.toString().c_str(), sci_error_types[error]);
res->unalloc();
}
}
}
Resource *ResourceManager::testResource(ResourceId id) {
return _resMap.getVal(id, NULL);
}
int sci0_get_compression_method(Common::ReadStream &stream) {
uint16 compressionMethod;
stream.readUint16LE();
stream.readUint16LE();
stream.readUint16LE();
compressionMethod = stream.readUint16LE();
if (stream.err())
return SCI_ERROR_IO_ERROR;
return compressionMethod;
}
int ResourceManager::addAppropriateSources() {
Common::ArchiveMemberList files;
if (Common::File::exists("RESOURCE.MAP")) {
// SCI0-SCI2 file naming scheme
ResourceSource *map = addExternalMap("RESOURCE.MAP");
SearchMan.listMatchingMembers(files, "RESOURCE.0??");
for (Common::ArchiveMemberList::const_iterator x = files.begin(); x != files.end(); ++x) {
const Common::String name = (*x)->getName();
const char *dot = strrchr(name.c_str(), '.');
int number = atoi(dot + 1);
addSource(map, kSourceVolume, name.c_str(), number);
}
#ifdef ENABLE_SCI32
// GK1CD hires content
if (Common::File::exists("ALT.MAP") && Common::File::exists("RESOURCE.ALT"))
addSource(addExternalMap("ALT.MAP", 10), kSourceVolume, "RESOURCE.ALT", 10);
#endif
} else if (Common::File::exists("Data1")) {
// Mac SCI1.1+ file naming scheme
SearchMan.listMatchingMembers(files, "Data?");
for (Common::ArchiveMemberList::const_iterator x = files.begin(); x != files.end(); ++x) {
Common::String filename = (*x)->getName();
addSource(0, kSourceMacResourceFork, filename.c_str(), atoi(filename.c_str() + 4));
}
#ifdef ENABLE_SCI32
// Mac SCI32 games have extra folders for patches
addPatchDir("Robot Folder");
addPatchDir("Sound Folder");
addPatchDir("Voices Folder");
//addPatchDir("VMD Folder");
// There can also be a "Patches" resource fork with patches
if (Common::File::exists("Patches"))
addSource(0, kSourceMacResourceFork, "Patches", 100);
} else {
// SCI2.1-SCI3 file naming scheme
Common::ArchiveMemberList mapFiles;
SearchMan.listMatchingMembers(mapFiles, "RESMAP.0??");
SearchMan.listMatchingMembers(files, "RESSCI.0??");
// We need to have the same number of maps as resource archives
if (mapFiles.empty() || files.empty() || mapFiles.size() != files.size())
return 0;
for (Common::ArchiveMemberList::const_iterator mapIterator = mapFiles.begin(); mapIterator != mapFiles.end(); ++mapIterator) {
Common::String mapName = (*mapIterator)->getName();
int mapNumber = atoi(strrchr(mapName.c_str(), '.') + 1);
for (Common::ArchiveMemberList::const_iterator fileIterator = files.begin(); fileIterator != files.end(); ++fileIterator) {
Common::String resName = (*fileIterator)->getName();
int resNumber = atoi(strrchr(resName.c_str(), '.') + 1);
if (mapNumber == resNumber) {
addSource(addExternalMap(mapName.c_str(), mapNumber), kSourceVolume, resName.c_str(), mapNumber);
break;
}
}
}
// SCI2.1 resource patches
if (Common::File::exists("RESMAP.PAT") && Common::File::exists("RESSCI.PAT")) {
// We add this resource with a map which surely won't exist
addSource(addExternalMap("RESMAP.PAT", 100), kSourceVolume, "RESSCI.PAT", 100);
}
}
#else
} else
return 0;
#endif
addPatchDir(".");
if (Common::File::exists("MESSAGE.MAP"))
addSource(addExternalMap("MESSAGE.MAP"), kSourceVolume, "RESOURCE.MSG", 0);
return 1;
}
int ResourceManager::addAppropriateSources(const Common::FSList &fslist) {
ResourceSource *map = 0;
// First, find resource.map
for (Common::FSList::const_iterator file = fslist.begin(); file != fslist.end(); ++file) {
if (file->isDirectory())
continue;
Common::String filename = file->getName();
filename.toLowercase();
// TODO: Load the SCI2.1+ maps (resmap.*) in concurrence with the volumes to
// get the proper volume numbers from the maps.
if (filename.contains("resource.map") || filename.contains("resmap.000")) {
map = addExternalMap(file);
break;
}
}
if (!map)
return 0;
// Now find all the resource.0?? files
for (Common::FSList::const_iterator file = fslist.begin(); file != fslist.end(); ++file) {
if (file->isDirectory())
continue;
Common::String filename = file->getName();
filename.toLowercase();
if (filename.contains("resource.0") || filename.contains("ressci.0")) {
const char *dot = strrchr(filename.c_str(), '.');
int number = atoi(dot + 1);
addSource(map, kSourceVolume, file, number);
}
}
// This function is only called by the advanced detector, and we don't really need
// to add a patch directory or message.map here
return 1;
}
int ResourceManager::addInternalSources() {
Common::List<ResourceId> *resources = listResources(kResourceTypeMap);
Common::List<ResourceId>::iterator itr = resources->begin();
while (itr != resources->end()) {
ResourceSource *src = addSource(NULL, kSourceIntMap, "MAP", itr->number);
if ((itr->number == 65535) && Common::File::exists("RESOURCE.SFX"))
addSource(src, kSourceAudioVolume, "RESOURCE.SFX", 0);
else if (Common::File::exists("RESOURCE.AUD"))
addSource(src, kSourceAudioVolume, "RESOURCE.AUD", 0);
++itr;
}
return 1;
}
void ResourceManager::addNewGMPatch(const Common::String &gameId) {
Common::String gmPatchFile;
if (gameId == "ecoquest")
gmPatchFile = "ECO1GM.PAT";
else if (gameId == "hoyle3")
gmPatchFile = "HOY3GM.PAT";
else if (gameId == "hoyle3")
gmPatchFile = "HOY3GM.PAT";
else if (gameId == "lsl1sci")
gmPatchFile = "LL1_GM.PAT";
else if (gameId == "lsl5")
gmPatchFile = "LL5_GM.PAT";
else if (gameId == "longbow")
gmPatchFile = "ROBNGM.PAT";
else if (gameId == "sq1sci")
gmPatchFile = "SQ1_GM.PAT";
else if (gameId == "sq4")
gmPatchFile = "SQ4_GM.PAT";
else if (gameId == "fairytales")
gmPatchFile = "TALEGM.PAT";
if (!gmPatchFile.empty() && Common::File::exists(gmPatchFile)) {
ResourceSource *psrcPatch = new ResourceSource;
psrcPatch->source_type = kSourcePatch;
psrcPatch->location_name = gmPatchFile;
processPatch(psrcPatch, kResourceTypePatch, 4);
}
}
void ResourceManager::scanNewSources() {
for (Common::List<ResourceSource *>::iterator it = _sources.begin(); it != _sources.end(); ++it) {
ResourceSource *source = *it;
if (!source->scanned) {
source->scanned = true;
switch (source->source_type) {
case kSourceDirectory:
readResourcePatches(source);
readWaveAudioPatches();
break;
case kSourceExtMap:
if (_mapVersion < kResVersionSci1Late)
readResourceMapSCI0(source);
else
readResourceMapSCI1(source);
break;
case kSourceExtAudioMap:
readAudioMapSCI1(source);
break;
case kSourceIntMap:
readAudioMapSCI11(source);
break;
case kSourceMacResourceFork:
readMacResourceFork(source);
break;
default:
break;
}
}
}
}
void ResourceManager::freeResourceSources() {
for (Common::List<ResourceSource *>::iterator it = _sources.begin(); it != _sources.end(); ++it)
delete *it;
_sources.clear();
}
ResourceManager::ResourceManager() {
addAppropriateSources();
init();
}
ResourceManager::ResourceManager(const Common::FSList &fslist) {
addAppropriateSources(fslist);
init();
}
void ResourceManager::init() {
_memoryLocked = 0;
_memoryLRU = 0;
_LRU.clear();
_resMap.clear();
_audioMapSCI1 = NULL;
// FIXME: put this in an Init() function, so that we can error out if detection fails completely
_mapVersion = detectMapVersion();
_volVersion = detectVolVersion();
if ((_volVersion == kResVersionUnknown) && (_mapVersion != kResVersionUnknown)) {
warning("Volume version not detected, but map version has been detected. Setting volume version to map version");
_volVersion = _mapVersion;
}
if ((_mapVersion == kResVersionUnknown) && (_volVersion != kResVersionUnknown)) {
warning("Map version not detected, but volume version has been detected. Setting map version to volume version");
_mapVersion = _volVersion;
}
debugC(1, kDebugLevelResMan, "resMan: Detected resource map version %d: %s", _mapVersion, versionDescription(_mapVersion));
debugC(1, kDebugLevelResMan, "resMan: Detected volume version %d: %s", _volVersion, versionDescription(_volVersion));
if ((_mapVersion == kResVersionUnknown) && (_volVersion == kResVersionUnknown)) {
warning("Volume and map version not detected, assuming that this is not a sci game");
_viewType = kViewUnknown;
return;
}
scanNewSources();
addInternalSources();
scanNewSources();
detectSciVersion();
debugC(1, kDebugLevelResMan, "resMan: Detected %s", getSciVersionDesc(getSciVersion()));
switch (_viewType) {
case kViewEga:
debugC(1, kDebugLevelResMan, "resMan: Detected EGA graphic resources");
break;
case kViewVga:
debugC(1, kDebugLevelResMan, "resMan: Detected VGA graphic resources");
break;
case kViewVga11:
debugC(1, kDebugLevelResMan, "resMan: Detected SCI1.1 VGA graphic resources");
break;
case kViewAmiga:
debugC(1, kDebugLevelResMan, "resMan: Detected Amiga graphic resources");
break;
default:
warning("resMan: Couldn't determine view type");
}
}
ResourceManager::~ResourceManager() {
// freeing resources
ResourceMap::iterator itr = _resMap.begin();
while (itr != _resMap.end()) {
delete itr->_value;
++itr;
}
freeResourceSources();
Common::List<Common::File *>::iterator it = _volumeFiles.begin();
while (it != _volumeFiles.end()) {
delete *it;
++it;
}
}
void ResourceManager::removeFromLRU(Resource *res) {
if (res->_status != kResStatusEnqueued) {
warning("resMan: trying to remove resource that isn't enqueued");
return;
}
_LRU.remove(res);
_memoryLRU -= res->size;
res->_status = kResStatusAllocated;
}
void ResourceManager::addToLRU(Resource *res) {
if (res->_status != kResStatusAllocated) {
warning("resMan: trying to enqueue resource with state %d", res->_status);
return;
}
_LRU.push_front(res);
_memoryLRU += res->size;
#if SCI_VERBOSE_resMan
debug("Adding %s.%03d (%d bytes) to lru control: %d bytes total",
getResourceTypeName(res->type), res->number, res->size,
mgr->_memoryLRU);
#endif
res->_status = kResStatusEnqueued;
}
void ResourceManager::printLRU() {
int mem = 0;
int entries = 0;
Common::List<Resource *>::iterator it = _LRU.begin();
Resource *res;
while (it != _LRU.end()) {
res = *it;
debug("\t%s: %d bytes", res->_id.toString().c_str(), res->size);
mem += res->size;
++entries;
++it;
}
debug("Total: %d entries, %d bytes (mgr says %d)", entries, mem, _memoryLRU);
}
void ResourceManager::freeOldResources() {
while (MAX_MEMORY < _memoryLRU) {
assert(!_LRU.empty());
Resource *goner = *_LRU.reverse_begin();
removeFromLRU(goner);
goner->unalloc();
#ifdef SCI_VERBOSE_resMan
printf("resMan-debug: LRU: Freeing %s.%03d (%d bytes)\n", getResourceTypeName(goner->type), goner->number, goner->size);
#endif
}
}
Common::List<ResourceId> *ResourceManager::listResources(ResourceType type, int mapNumber) {
Common::List<ResourceId> *resources = new Common::List<ResourceId>;
ResourceMap::iterator itr = _resMap.begin();
while (itr != _resMap.end()) {
if ((itr->_value->_id.type == type) && ((mapNumber == -1) || (itr->_value->_id.number == mapNumber)))
resources->push_back(itr->_value->_id);
++itr;
}
return resources;
}
Resource *ResourceManager::findResource(ResourceId id, bool lock) {
Resource *retval = testResource(id);
if (!retval)
return NULL;
if (retval->_status == kResStatusNoMalloc)
loadResource(retval);
else if (retval->_status == kResStatusEnqueued)
removeFromLRU(retval);
// Unless an error occured, the resource is now either
// locked or allocated, but never queued or freed.
freeOldResources();
if (lock) {
if (retval->_status == kResStatusAllocated) {
retval->_status = kResStatusLocked;
retval->_lockers = 0;
_memoryLocked += retval->size;
}
retval->_lockers++;
} else if (retval->_status != kResStatusLocked) { // Don't lock it
if (retval->_status == kResStatusAllocated)
addToLRU(retval);
}
if (retval->data)
return retval;
else {
warning("resMan: Failed to read %s", retval->_id.toString().c_str());
return NULL;
}
}
void ResourceManager::unlockResource(Resource *res) {
assert(res);
if (res->_status != kResStatusLocked) {
warning("[resMan] Attempt to unlock unlocked resource %s", res->_id.toString().c_str());
return;
}
if (!--res->_lockers) { // No more lockers?
res->_status = kResStatusAllocated;
_memoryLocked -= res->size;
addToLRU(res);
}
freeOldResources();
}
const char *ResourceManager::versionDescription(ResVersion version) const {
switch (version) {
case kResVersionUnknown:
return "Unknown";
case kResVersionSci0Sci1Early:
return "SCI0 / Early SCI1";
case kResVersionSci1Middle:
return "Middle SCI1";
case kResVersionSci1Late:
return "Late SCI1";
case kResVersionSci11:
return "SCI1.1";
case kResVersionSci11Mac:
return "Mac SCI1.1+";
case kResVersionSci32:
return "SCI32";
}
return "Version not valid";
}
ResourceManager::ResVersion ResourceManager::detectMapVersion() {
Common::SeekableReadStream *fileStream = 0;
Common::File *file = 0;
byte buff[6];
ResourceSource *rsrc= 0;
for (Common::List<ResourceSource *>::iterator it = _sources.begin(); it != _sources.end(); ++it) {
rsrc = *it;
if (rsrc->source_type == kSourceExtMap) {
if (rsrc->resourceFile) {
fileStream = rsrc->resourceFile->createReadStream();
} else {
file = new Common::File();
file->open(rsrc->location_name);
if (file->isOpen())
fileStream = file;
}
break;
} else if (rsrc->source_type == kSourceMacResourceFork)
return kResVersionSci11Mac;
}
if (!fileStream)
error("Failed to open resource map file");
// detection
// SCI0 and SCI01 maps have last 6 bytes set to FF
fileStream->seek(-4, SEEK_END);
uint32 uEnd = fileStream->readUint32LE();
if (uEnd == 0xFFFFFFFF) {
// check if 0 or 01 - try to read resources in SCI0 format and see if exists
fileStream->seek(0, SEEK_SET);
while (fileStream->read(buff, 6) == 6 && !(buff[0] == 0xFF && buff[1] == 0xFF && buff[2] == 0xFF)) {
if (getVolume(rsrc, (buff[5] & 0xFC) >> 2) == NULL)
return kResVersionSci1Middle;
}
return kResVersionSci0Sci1Early;
}
// SCI1 and SCI1.1 maps consist of a fixed 3-byte header, a directory list (3-bytes each) that has one entry
// of id FFh and points to EOF. The actual entries have 6-bytes on SCI1 and 5-bytes on SCI1.1
byte directoryType = 0;
uint16 directoryOffset = 0;
uint16 lastDirectoryOffset = 0;
uint16 directorySize = 0;
ResVersion mapDetected = kResVersionUnknown;
fileStream->seek(0, SEEK_SET);
while (!fileStream->eos()) {
directoryType = fileStream->readByte();
directoryOffset = fileStream->readUint16LE();
// Only SCI32 has directory type < 0x80
if (directoryType < 0x80 && (mapDetected == kResVersionUnknown || mapDetected == kResVersionSci32))
mapDetected = kResVersionSci32;
else if (directoryType < 0x80 || ((directoryType & 0x7f) > 0x20 && directoryType != 0xFF))
break;
// Offset is above file size? -> definitely not SCI1/SCI1.1
if (directoryOffset > fileStream->size())
break;
if (lastDirectoryOffset && mapDetected == kResVersionUnknown) {
directorySize = directoryOffset - lastDirectoryOffset;
if ((directorySize % 5) && (directorySize % 6 == 0))
mapDetected = kResVersionSci1Late;
if ((directorySize % 5 == 0) && (directorySize % 6))
mapDetected = kResVersionSci11;
}
if (directoryType == 0xFF) {
// FFh entry needs to point to EOF
if (directoryOffset != fileStream->size())
break;
delete fileStream;
if (mapDetected)
return mapDetected;
return kResVersionSci1Late;
}
lastDirectoryOffset = directoryOffset;
}
delete fileStream;
return kResVersionUnknown;
}
ResourceManager::ResVersion ResourceManager::detectVolVersion() {
Common::SeekableReadStream *fileStream = 0;
Common::File *file = 0;
ResourceSource *rsrc;
for (Common::List<ResourceSource *>::iterator it = _sources.begin(); it != _sources.end(); ++it) {
rsrc = *it;
if (rsrc->source_type == kSourceVolume) {
if (rsrc->resourceFile) {
fileStream = rsrc->resourceFile->createReadStream();
} else {
file = new Common::File();
file->open(rsrc->location_name);
if (file->isOpen())
fileStream = file;
}
break;
} else if (rsrc->source_type == kSourceMacResourceFork)
return kResVersionSci11Mac;
}
if (!fileStream) {
error("Failed to open volume file - if you got resource.p01/resource.p02/etc. files, merge them together into resource.000");
// resource.p01/resource.p02/etc. may be there when directly copying the files from the original floppies
// the sierra installer would merge those together (perhaps we could do this as well?)
// possible TODO
// example for such game: Laura Bow 2
return kResVersionUnknown;
}
// SCI0 volume format: {wResId wPacked+4 wUnpacked wCompression} = 8 bytes
// SCI1 volume format: {bResType wResNumber wPacked+4 wUnpacked wCompression} = 9 bytes
// SCI1.1 volume format: {bResType wResNumber wPacked wUnpacked wCompression} = 9 bytes
// SCI32 volume format: {bResType wResNumber dwPacked dwUnpacked wCompression} = 13 bytes
// Try to parse volume with SCI0 scheme to see if it make sense
// Checking 1MB of data should be enough to determine the version
uint16 resId, wCompression;
uint32 dwPacked, dwUnpacked;
ResVersion curVersion = kResVersionSci0Sci1Early;
bool failed = false;
bool sci11Align = false;
// Check for SCI0, SCI1, SCI1.1 and SCI32 v2 (Gabriel Knight 1 CD) formats
while (!fileStream->eos() && fileStream->pos() < 0x100000) {
if (curVersion > kResVersionSci0Sci1Early)
fileStream->readByte();
resId = fileStream->readUint16LE();
dwPacked = (curVersion < kResVersionSci32) ? fileStream->readUint16LE() : fileStream->readUint32LE();
dwUnpacked = (curVersion < kResVersionSci32) ? fileStream->readUint16LE() : fileStream->readUint32LE();
wCompression = fileStream->readUint16LE();
if (fileStream->eos()) {
delete fileStream;
return curVersion;
}
int chk = (curVersion == kResVersionSci0Sci1Early) ? 4 : 20;
int offs = curVersion < kResVersionSci11 ? 4 : 0;
if ((curVersion < kResVersionSci32 && wCompression > chk)
|| (curVersion == kResVersionSci32 && wCompression != 0 && wCompression != 32)
|| (wCompression == 0 && dwPacked != dwUnpacked + offs)
|| (dwUnpacked < dwPacked - offs)) {
// Retry with a newer SCI version
if (curVersion == kResVersionSci0Sci1Early) {
curVersion = kResVersionSci1Late;
} else if (curVersion == kResVersionSci1Late) {
curVersion = kResVersionSci11;
} else if (curVersion == kResVersionSci11 && !sci11Align) {
// Later versions (e.g. QFG1VGA) have resources word-aligned
sci11Align = true;
} else if (curVersion == kResVersionSci11) {
curVersion = kResVersionSci32;
} else {
// All version checks failed, exit loop
failed = true;
break;
}
fileStream->seek(0);
continue;
}
if (curVersion < kResVersionSci11)
fileStream->seek(dwPacked - 4, SEEK_CUR);
else if (curVersion == kResVersionSci11)
fileStream->seek(sci11Align && ((9 + dwPacked) % 2) ? dwPacked + 1 : dwPacked, SEEK_CUR);
else if (curVersion == kResVersionSci32)
fileStream->seek(dwPacked, SEEK_CUR);
}
delete fileStream;
if (!failed)
return curVersion;
// Failed to detect volume version
return kResVersionUnknown;
}
// version-agnostic patch application
void ResourceManager::processPatch(ResourceSource *source, ResourceType restype, int resnumber) {
Common::File file;
Resource *newrsc;
ResourceId resId = ResourceId(restype, resnumber);
byte patchtype, patch_data_offset;
int fsize;
if (resnumber == -1)
return;
if (!file.open(source->location_name)) {
warning("ResourceManager::processPatch(): failed to open %s", source->location_name.c_str());
return;
}
fsize = file.size();
if (fsize < 3) {
debug("Patching %s failed - file too small", source->location_name.c_str());
return;
}
patchtype = file.readByte() & 0x7F;
patch_data_offset = file.readByte();
if (patchtype != restype) {
debug("Patching %s failed - resource type mismatch", source->location_name.c_str());
}
// Fixes SQ5/German, patch file special case logic taken from SCI View disassembly
if (patch_data_offset & 0x80) {
switch (patch_data_offset & 0x7F) {
case 0:
patch_data_offset = 24;
break;
case 1:
patch_data_offset = 2;
break;
default:
warning("Resource patch unsupported special case %X", patch_data_offset);
}
}
if (patch_data_offset + 2 >= fsize) {
debug("Patching %s failed - patch starting at offset %d can't be in file of size %d",
source->location_name.c_str(), patch_data_offset + 2, fsize);
return;
}
// Prepare destination, if neccessary
if (_resMap.contains(resId) == false) {
newrsc = new Resource;
_resMap.setVal(resId, newrsc);
} else
newrsc = _resMap.getVal(resId);
// Overwrite everything, because we're patching
newrsc->_id = resId;
newrsc->_status = kResStatusNoMalloc;
newrsc->_source = source;
newrsc->size = fsize - patch_data_offset - 2;
newrsc->_headerSize = patch_data_offset;
newrsc->_fileOffset = 0;
debugC(1, kDebugLevelResMan, "Patching %s - OK", source->location_name.c_str());
}
void ResourceManager::readResourcePatches(ResourceSource *source) {
// Note: since some SCI1 games(KQ5 floppy, SQ4) might use SCI0 naming scheme for patch files
// this function tries to read patch file with any supported naming scheme,
// regardless of s_sciVersion value
Common::String mask, name;
Common::ArchiveMemberList files;
int number = -1;
const char *szResType;
ResourceSource *psrcPatch;
for (int i = kResourceTypeView; i <= kResourceTypeRobot; ++i) {
// TODO: add support for audio36 and sync36 files
if (i == kResourceTypeAudio36 || i == kResourceTypeSync36)
continue;
files.clear();
szResType = getResourceTypeName((ResourceType)i);
// SCI0 naming - type.nnn
mask = szResType;
mask += ".???";
SearchMan.listMatchingMembers(files, mask);
// SCI1 and later naming - nnn.typ
mask = "*.";
mask += resourceTypeSuffixes[i];
SearchMan.listMatchingMembers(files, mask);
for (Common::ArchiveMemberList::const_iterator x = files.begin(); x != files.end(); ++x) {
bool bAdd = false;
name = (*x)->getName();
// SCI1 scheme
if (isdigit(name[0])) {
number = atoi(name.c_str());
bAdd = true;
} else {
// SCI0 scheme
int resname_len = strlen(szResType);
if (scumm_strnicmp(name.c_str(), szResType, resname_len) == 0
&& !isalpha(name[resname_len + 1])) {
number = atoi(name.c_str() + resname_len + 1);
bAdd = true;
}
}
if (bAdd) {
psrcPatch = new ResourceSource;
psrcPatch->source_type = kSourcePatch;
psrcPatch->location_name = name;
processPatch(psrcPatch, (ResourceType)i, number);
}
}
}
}
void ResourceManager::readWaveAudioPatches() {
// Here we do check for SCI1.1+ so we can patch wav files in as audio resources
Common::ArchiveMemberList files;
SearchMan.listMatchingMembers(files, "*.wav");
for (Common::ArchiveMemberList::const_iterator x = files.begin(); x != files.end(); ++x) {
Common::String name = (*x)->getName();
if (isdigit(name[0])) {
int number = atoi(name.c_str());
ResourceSource *psrcPatch = new ResourceSource;
psrcPatch->source_type = kSourceWave;
psrcPatch->location_name = name;
psrcPatch->volume_number = 0;
psrcPatch->audioCompressionType = 0;
ResourceId resId = ResourceId(kResourceTypeAudio, number);
Resource *newrsc = NULL;
// Prepare destination, if neccessary
if (_resMap.contains(resId) == false) {
newrsc = new Resource;
_resMap.setVal(resId, newrsc);
} else
newrsc = _resMap.getVal(resId);
// Get the size of the file
Common::SeekableReadStream *stream = (*x)->createReadStream();
uint32 fileSize = stream->size();
delete stream;
// Overwrite everything, because we're patching
newrsc->_id = resId;
newrsc->_status = kResStatusNoMalloc;
newrsc->_source = psrcPatch;
newrsc->size = fileSize;
newrsc->_headerSize = 0;
debugC(1, kDebugLevelResMan, "Patching %s - OK", psrcPatch->location_name.c_str());
}
}
}
int ResourceManager::readResourceMapSCI0(ResourceSource *map) {
Common::File file;
Resource *res;
ResourceType type;
uint16 number, id;
uint32 offset;
if (!file.open(map->location_name))
return SCI_ERROR_RESMAP_NOT_FOUND;
file.seek(0, SEEK_SET);
byte bMask = (_mapVersion == kResVersionSci1Middle) ? 0xF0 : 0xFC;
byte bShift = (_mapVersion == kResVersionSci1Middle) ? 28 : 26;
do {
id = file.readUint16LE();
offset = file.readUint32LE();
if (file.eos() || file.err()) {
warning("Error while reading %s", map->location_name.c_str());
return SCI_ERROR_RESMAP_NOT_FOUND;
}
if (offset == 0xFFFFFFFF)
break;
type = (ResourceType)(id >> 11);
number = id & 0x7FF;
ResourceId resId = ResourceId(type, number);
// adding a new resource
if (_resMap.contains(resId) == false) {
res = new Resource;
res->_source = getVolume(map, offset >> bShift);
if (!res->_source) {
warning("Could not get volume for resource %d, VolumeID %d", id, offset >> bShift);
if (_mapVersion != _volVersion) {
warning("Retrying with the detected volume version instead");
warning("Map version was: %d, retrying with: %d", _mapVersion, _volVersion);
_mapVersion = _volVersion;
bMask = (_mapVersion == kResVersionSci1Middle) ? 0xF0 : 0xFC;
bShift = (_mapVersion == kResVersionSci1Middle) ? 28 : 26;
res->_source = getVolume(map, offset >> bShift);
}
}
res->_fileOffset = offset & (((~bMask) << 24) | 0xFFFFFF);
res->_id = resId;
_resMap.setVal(resId, res);
}
} while (!file.eos());
return 0;
}
int ResourceManager::readResourceMapSCI1(ResourceSource *map) {
Common::File file;
Resource *res;
if (!file.open(map->location_name))
return SCI_ERROR_RESMAP_NOT_FOUND;
resource_index_t resMap[32];
memset(resMap, 0, sizeof(resource_index_t) * 32);
byte type = 0, prevtype = 0;
byte nEntrySize = _mapVersion == kResVersionSci11 ? SCI11_RESMAP_ENTRIES_SIZE : SCI1_RESMAP_ENTRIES_SIZE;
ResourceId resId;
// Read resource type and offsets to resource offsets block from .MAP file
// The last entry has type=0xFF (0x1F) and offset equals to map file length
do {
type = file.readByte() & 0x1F;
resMap[type].wOffset = file.readUint16LE();
resMap[prevtype].wSize = (resMap[type].wOffset
- resMap[prevtype].wOffset) / nEntrySize;
prevtype = type;
} while (type != 0x1F); // the last entry is FF
// reading each type's offsets
uint32 off = 0;
for (type = 0; type < 32; type++) {
if (resMap[type].wOffset == 0) // this resource does not exist in map
continue;
file.seek(resMap[type].wOffset);
for (int i = 0; i < resMap[type].wSize; i++) {
uint16 number = file.readUint16LE();
int volume_nr = 0;
if (_mapVersion == kResVersionSci11) {
// offset stored in 3 bytes
off = file.readUint16LE();
off |= file.readByte() << 16;
off <<= 1;
} else {
// offset/volume stored in 4 bytes
off = file.readUint32LE();
if (_mapVersion < kResVersionSci11) {
volume_nr = off >> 28; // most significant 4 bits
off &= 0x0FFFFFFF; // least significant 28 bits
} else {
// in SCI32 it's a plain offset
}
}
if (file.eos() || file.err()) {
warning("Error while reading %s", map->location_name.c_str());
return SCI_ERROR_RESMAP_NOT_FOUND;
}
resId = ResourceId((ResourceType)type, number);
// adding new resource only if it does not exist
if (_resMap.contains(resId) == false) {
res = new Resource;
_resMap.setVal(resId, res);
res->_id = resId;
// NOTE: We add the map's volume number here to the specified volume number
// for SCI2.1 and SCI3 maps that are not RESMAP.000. The RESMAP.* files' numbers
// need to be used in concurrence with the volume specified in the map to get
// the actual resource file.
res->_source = getVolume(map, volume_nr + map->volume_number);
res->_fileOffset = off;
}
}
}
return 0;
}
struct {
uint32 tag;
ResourceType type;
} static const macResTagMap[] = {
{ MKID_BE('V56 '), kResourceTypeView },
{ MKID_BE('P56 '), kResourceTypePic },
{ MKID_BE('SCR '), kResourceTypeScript },
{ MKID_BE('TEX '), kResourceTypeText },
{ MKID_BE('SND '), kResourceTypeSound },
{ MKID_BE('VOC '), kResourceTypeVocab },
{ MKID_BE('FON '), kResourceTypeFont },
{ MKID_BE('CURS'), kResourceTypeCursor },
{ MKID_BE('crsr'), kResourceTypeCursor },
{ MKID_BE('Pat '), kResourceTypePatch },
{ MKID_BE('PAL '), kResourceTypePalette },
{ MKID_BE('snd '), kResourceTypeAudio },
{ MKID_BE('MSG '), kResourceTypeMessage },
{ MKID_BE('HEP '), kResourceTypeHeap },
{ MKID_BE('IBIN'), kResourceTypeMacIconBarPictN },
{ MKID_BE('IBIS'), kResourceTypeMacIconBarPictS },
{ MKID_BE('PICT'), kResourceTypeMacPict }
};
static uint32 resTypeToMacTag(ResourceType type) {
for (uint32 i = 0; i < ARRAYSIZE(macResTagMap); i++)
if (macResTagMap[i].type == type)
return macResTagMap[i].tag;
return 0;
}
int ResourceManager::readMacResourceFork(ResourceSource *source) {
if (!source->macResMan.open(source->location_name.c_str()))
error("%s is not a valid Mac resource fork", source->location_name.c_str());
Common::MacResTagArray tagArray = source->macResMan.getResTagArray();
for (uint32 i = 0; i < tagArray.size(); i++) {
ResourceType type = kResourceTypeInvalid;
// Map the Mac tags to our ResourceType
for (uint32 j = 0; j < ARRAYSIZE(macResTagMap); j++)
if (tagArray[i] == macResTagMap[j].tag) {
type = macResTagMap[j].type;
break;
}
if (type == kResourceTypeInvalid)
continue;
Common::MacResIDArray idArray = source->macResMan.getResIDArray(tagArray[i]);
for (uint32 j = 0; j < idArray.size(); j++) {
// Get the size of the file
Common::SeekableReadStream *stream = source->macResMan.getResource(tagArray[i], idArray[j]);
// Some IBIS resources have a size of 0, so we skip them
if (!stream)
continue;
uint32 fileSize = stream->size();
delete stream;
ResourceId resId = ResourceId(type, idArray[j]);
Resource *newrsc = NULL;
// Prepare destination, if neccessary. Resource forks may contain patches.
if (!_resMap.contains(resId)) {
newrsc = new Resource;
_resMap.setVal(resId, newrsc);
} else
newrsc = _resMap.getVal(resId);
// Overwrite everything
newrsc->_id = resId;
newrsc->_status = kResStatusNoMalloc;
newrsc->_source = source;
newrsc->size = fileSize;
newrsc->_headerSize = 0;
}
}
return 0;
}
void ResourceManager::addResource(ResourceId resId, ResourceSource *src, uint32 offset, uint32 size) {
// Adding new resource only if it does not exist
if (_resMap.contains(resId) == false) {
Resource *res = new Resource;
_resMap.setVal(resId, res);
res->_id = resId;
res->_source = src;
res->_fileOffset = offset;
res->size = size;
}
}
void ResourceManager::removeAudioResource(ResourceId resId) {
// Remove resource, unless it was loaded from a patch
if (_resMap.contains(resId)) {
Resource *res = _resMap.getVal(resId);
if (res->_source->source_type == kSourceAudioVolume) {
if (res->_status == kResStatusLocked) {
warning("Failed to remove resource %s (still in use)", resId.toString().c_str());
} else {
if (res->_status == kResStatusEnqueued)
removeFromLRU(res);
_resMap.erase(resId);
delete res;
}
}
}
}
// Early SCI1.1 65535.MAP structure (uses RESOURCE.AUD):
// =========
// 6-byte entries:
// w nEntry
// dw offset
// Late SCI1.1 65535.MAP structure (uses RESOURCE.SFX):
// =========
// 5-byte entries:
// w nEntry
// tb offset (cumulative)
// Early SCI1.1 MAP structure:
// ===============
// 10-byte entries:
// b noun
// b verb
// b cond
// b seq
// dw offset
// w syncSize + syncAscSize
// Late SCI1.1 MAP structure:
// ===============
// Header:
// dw baseOffset
// Followed by 7 or 11-byte entries:
// b noun
// b verb
// b cond
// b seq
// tb cOffset (cumulative offset)
// w syncSize (iff seq has bit 7 set)
// w syncAscSize (iff seq has bit 6 set)
int ResourceManager::readAudioMapSCI11(ResourceSource *map) {
bool isEarly = true;
uint32 offset = 0;
Resource *mapRes = findResource(ResourceId(kResourceTypeMap, map->volume_number), false);
if (!mapRes) {
warning("Failed to open %i.MAP", map->volume_number);
return SCI_ERROR_RESMAP_NOT_FOUND;
}
ResourceSource *src = getVolume(map, 0);
if (!src)
return SCI_ERROR_NO_RESOURCE_FILES_FOUND;
byte *ptr = mapRes->data;
if (map->volume_number == 65535) {
// Heuristic to detect late SCI1.1 map format
if ((mapRes->size >= 6) && (ptr[mapRes->size - 6] != 0xff))
isEarly = false;
while (ptr < mapRes->data + mapRes->size) {
uint16 n = READ_LE_UINT16(ptr);
ptr += 2;
if (n == 0xffff)
break;
if (isEarly) {
offset = READ_LE_UINT32(ptr);
ptr += 4;
} else {
offset += READ_LE_UINT24(ptr);
ptr += 3;
}
addResource(ResourceId(kResourceTypeAudio, n), src, offset);
}
} else {
// Heuristic to detect late SCI1.1 map format
if ((mapRes->size >= 11) && (ptr[mapRes->size - 11] == 0xff))
isEarly = false;
if (!isEarly) {
offset = READ_LE_UINT32(ptr);
ptr += 4;
}
while (ptr < mapRes->data + mapRes->size) {
uint32 n = READ_BE_UINT32(ptr);
int syncSize = 0;
ptr += 4;
if (n == 0xffffffff)
break;
if (isEarly) {
offset = READ_LE_UINT32(ptr);
ptr += 4;
} else {
offset += READ_LE_UINT24(ptr);
ptr += 3;
}
if (isEarly || (n & 0x80)) {
syncSize = READ_LE_UINT16(ptr);
ptr += 2;
if (syncSize > 0)
addResource(ResourceId(kResourceTypeSync36, map->volume_number, n & 0xffffff3f), src, offset, syncSize);
}
if (n & 0x40) {
syncSize += READ_LE_UINT16(ptr);
ptr += 2;
}
addResource(ResourceId(kResourceTypeAudio36, map->volume_number, n & 0xffffff3f), src, offset + syncSize);
}
}
return 0;
}
// AUDIOnnn.MAP contains 10-byte entries:
// Early format:
// w 5 bits resource type and 11 bits resource number
// dw 7 bits volume number and 25 bits offset
// dw size
// Later format:
// w nEntry
// dw offset+volume (as in resource.map)
// dw size
// ending with 10 0xFFs
int ResourceManager::readAudioMapSCI1(ResourceSource *map, bool unload) {
Common::File file;
if (!file.open(map->location_name))
return SCI_ERROR_RESMAP_NOT_FOUND;
bool oldFormat = (file.readUint16LE() >> 11) == kResourceTypeAudio;
file.seek(0);
while (1) {
uint16 n = file.readUint16LE();
uint32 offset = file.readUint32LE();
uint32 size = file.readUint32LE();
if (file.eos() || file.err()) {
warning("Error while reading %s", map->location_name.c_str());
return SCI_ERROR_RESMAP_NOT_FOUND;
}
if (n == 0xffff)
break;
byte volume_nr;
if (oldFormat) {
n &= 0x07ff; // Mask out resource type
volume_nr = offset >> 25; // most significant 7 bits
offset &= 0x01ffffff; // least significant 25 bits
} else {
volume_nr = offset >> 28; // most significant 4 bits
offset &= 0x0fffffff; // least significant 28 bits
}
ResourceSource *src = getVolume(map, volume_nr);
if (src) {
if (unload)
removeAudioResource(ResourceId(kResourceTypeAudio, n));
else
addResource(ResourceId(kResourceTypeAudio, n), src, offset, size);
} else {
warning("Failed to find audio volume %i", volume_nr);
}
}
return 0;
}
void ResourceManager::setAudioLanguage(int language) {
if (_audioMapSCI1) {
if (_audioMapSCI1->volume_number == language) {
// This language is already loaded
return;
}
// We already have a map loaded, so we unload it first
readAudioMapSCI1(_audioMapSCI1, true);
// Remove all volumes that use this map from the source list
Common::List<ResourceSource *>::iterator it = _sources.begin();
while (it != _sources.end()) {
ResourceSource *src = *it;
if (src->associated_map == _audioMapSCI1) {
it = _sources.erase(it);
delete src;
} else {
++it;
}
}
// Remove the map itself from the source list
_sources.remove(_audioMapSCI1);
delete _audioMapSCI1;
_audioMapSCI1 = NULL;
}
char filename[9];
snprintf(filename, 9, "AUDIO%03d", language);
Common::String fullname = Common::String(filename) + ".MAP";
if (!Common::File::exists(fullname)) {
warning("No audio map found for language %i", language);
return;
}
_audioMapSCI1 = addSource(NULL, kSourceExtAudioMap, fullname.c_str(), language);
// Search for audio volumes for this language and add them to the source list
Common::ArchiveMemberList files;
SearchMan.listMatchingMembers(files, Common::String(filename) + ".0??");
for (Common::ArchiveMemberList::const_iterator x = files.begin(); x != files.end(); ++x) {
const Common::String name = (*x)->getName();
const char *dot = strrchr(name.c_str(), '.');
int number = atoi(dot + 1);
addSource(_audioMapSCI1, kSourceAudioVolume, name.c_str(), number);
}
scanNewSources();
}
int ResourceManager::getAudioLanguage() const {
return (_audioMapSCI1 ? _audioMapSCI1->volume_number : 0);
}
int ResourceManager::readResourceInfo(Resource *res, Common::SeekableReadStream *file,
uint32&szPacked, ResourceCompression &compression) {
// SCI0 volume format: {wResId wPacked+4 wUnpacked wCompression} = 8 bytes
// SCI1 volume format: {bResType wResNumber wPacked+4 wUnpacked wCompression} = 9 bytes
// SCI1.1 volume format: {bResType wResNumber wPacked wUnpacked wCompression} = 9 bytes
// SCI32 volume format : {bResType wResNumber dwPacked dwUnpacked wCompression} = 13 bytes
uint16 w, number;
uint32 wCompression, szUnpacked;
ResourceType type;
switch (_volVersion) {
case kResVersionSci0Sci1Early:
case kResVersionSci1Middle:
w = file->readUint16LE();
type = (ResourceType)(w >> 11);
number = w & 0x7FF;
szPacked = file->readUint16LE() - 4;
szUnpacked = file->readUint16LE();
wCompression = file->readUint16LE();
break;
case kResVersionSci1Late:
type = (ResourceType)(file->readByte() & 0x7F);
number = file->readUint16LE();
szPacked = file->readUint16LE() - 4;
szUnpacked = file->readUint16LE();
wCompression = file->readUint16LE();
break;
case kResVersionSci11:
type = (ResourceType)(file->readByte() & 0x7F);
number = file->readUint16LE();
szPacked = file->readUint16LE();
szUnpacked = file->readUint16LE();
wCompression = file->readUint16LE();
break;
case kResVersionSci11Mac:
// Doesn't store this data in the resource. Fortunately,
// we already have this data.
type = res->_id.type;
number = res->_id.number;
szPacked = file->size();
szUnpacked = file->size();
wCompression = 0;
break;
#ifdef ENABLE_SCI32
case kResVersionSci32:
type = (ResourceType)(file->readByte() & 0x7F);
number = file->readUint16LE();
szPacked = file->readUint32LE();
szUnpacked = file->readUint32LE();
wCompression = file->readUint16LE();
break;
#endif
default:
return SCI_ERROR_INVALID_RESMAP_ENTRY;
}
// check if there were errors while reading
if ((file->eos() || file->err()))
return SCI_ERROR_IO_ERROR;
res->_id = ResourceId(type, number);
res->size = szUnpacked;
// checking compression method
switch (wCompression) {
case 0:
compression = kCompNone;
break;
case 1:
compression = (getSciVersion() <= SCI_VERSION_01) ? kCompLZW : kCompHuffman;
break;
case 2:
compression = (getSciVersion() <= SCI_VERSION_01) ? kCompHuffman : kCompLZW1;
break;
case 3:
compression = kCompLZW1View;
break;
case 4:
compression = kCompLZW1Pic;
break;
case 18:
case 19:
case 20:
compression = kCompDCL;
break;
#ifdef ENABLE_SCI32
case 32:
compression = kCompSTACpack;
break;
#endif
default:
compression = kCompUnknown;
}
return compression == kCompUnknown ? SCI_ERROR_UNKNOWN_COMPRESSION : 0;
}
int ResourceManager::decompress(Resource *res, Common::SeekableReadStream *file) {
int error;
uint32 szPacked = 0;
ResourceCompression compression = kCompUnknown;
// fill resource info
error = readResourceInfo(res, file, szPacked, compression);
if (error)
return error;
// getting a decompressor
Decompressor *dec = NULL;
switch (compression) {
case kCompNone:
dec = new Decompressor;
break;
case kCompHuffman:
dec = new DecompressorHuffman;
break;
case kCompLZW:
case kCompLZW1:
case kCompLZW1View:
case kCompLZW1Pic:
dec = new DecompressorLZW(compression);
break;
case kCompDCL:
dec = new DecompressorDCL;
break;
#ifdef ENABLE_SCI32
case kCompSTACpack:
dec = new DecompressorLZS;
break;
#endif
default:
warning("Resource %s: Compression method %d not supported", res->_id.toString().c_str(), compression);
return SCI_ERROR_UNKNOWN_COMPRESSION;
}
res->data = new byte[res->size];
res->_status = kResStatusAllocated;
error = res->data ? dec->unpack(file, res->data, szPacked, res->size) : SCI_ERROR_RESOURCE_TOO_BIG;
if (error)
res->unalloc();
delete dec;
return error;
}
ResourceCompression ResourceManager::getViewCompression() {
int viewsTested = 0;
// Test 10 views to see if any are compressed
for (int i = 0; i < 1000; i++) {
Common::File *file;
Resource *res = testResource(ResourceId(kResourceTypeView, i));
if (!res)
continue;
if (res->_source->source_type != kSourceVolume)
continue;
file = getVolumeFile(res->_source->location_name.c_str());
if (!file)
continue;
file->seek(res->_fileOffset, SEEK_SET);
uint32 szPacked;
ResourceCompression compression;
if (readResourceInfo(res, file, szPacked, compression))
continue;
if (compression != kCompNone)
return compression;
if (++viewsTested == 10)
break;
}
return kCompNone;
}
ViewType ResourceManager::detectViewType() {
for (int i = 0; i < 1000; i++) {
Resource *res = findResource(ResourceId(kResourceTypeView, i), 0);
if (res) {
switch (res->data[1]) {
case 128:
// If the 2nd byte is 128, it's a VGA game
return kViewVga;
case 0:
// EGA or Amiga, try to read as Amiga view
if (res->size < 10)
return kViewUnknown;
// Read offset of first loop
uint16 offset = READ_LE_UINT16(res->data + 8);
if (offset + 6U >= res->size)
return kViewUnknown;
// Read offset of first cel
offset = READ_LE_UINT16(res->data + offset + 4);
if (offset + 4U >= res->size)
return kViewUnknown;
// Check palette offset, amiga views have no palette
if (READ_LE_UINT16(res->data + 6) != 0)
return kViewEga;
uint16 width = READ_LE_UINT16(res->data + offset);
offset += 2;
uint16 height = READ_LE_UINT16(res->data + offset);
offset += 6;
// To improve the heuristic, we skip very small views
if (height < 10)
continue;
// Check that the RLE data stays within bounds
int y;
for (y = 0; y < height; y++) {
int x = 0;
while ((x < width) && (offset < res->size)) {
byte op = res->data[offset++];
x += (op & 0x07) ? op & 0x07 : op >> 3;
}
// Make sure we got exactly the right number of pixels for this row
if (x != width)
return kViewEga;
}
return kViewAmiga;
}
}
}
warning("resMan: Couldn't find any views");
return kViewUnknown;
}
void ResourceManager::detectSciVersion() {
// We use the view compression to set a preliminary s_sciVersion for the sake of getResourceInfo
// Pretend we have a SCI0 game
s_sciVersion = SCI_VERSION_0_EARLY;
bool oldDecompressors = true;
ResourceCompression viewCompression = getViewCompression();
if (viewCompression != kCompLZW) {
// If it's a different compression type from kCompLZW, the game is probably
// SCI_VERSION_1_EGA or later. If the views are uncompressed, it is
// likely not an early disk game.
s_sciVersion = SCI_VERSION_1_EGA;
oldDecompressors = false;
}
// Set view type
if (viewCompression == kCompDCL
|| _volVersion == kResVersionSci11 // pq4demo
|| _volVersion == kResVersionSci11Mac
#ifdef ENABLE_SCI32
|| viewCompression == kCompSTACpack
|| _volVersion == kResVersionSci32 // kq7
#endif
) {
// SCI1.1 VGA views
_viewType = kViewVga11;
} else {
// Otherwise we detect it from a view
_viewType = detectViewType();
}
if (_volVersion == kResVersionSci11Mac) {
// SCI32 doesn't have the resource.cfg file, so we can figure out
// which of the games are SCI1.1.
// TODO: Decide between SCI2 and SCI2.1
if (Common::File::exists("resource.cfg"))
s_sciVersion = SCI_VERSION_1_1;
else if (Common::File::exists("Patches"))
s_sciVersion = SCI_VERSION_2_1;
else
s_sciVersion = SCI_VERSION_2;
return;
}
// Handle SCI32 versions here
if (_volVersion == kResVersionSci32) {
// SCI2.1/3 and SCI1 Late resource maps are the same, except that
// SCI1 Late resource maps have the resource types or'd with
// 0x80. We differentiate between SCI2 and SCI2.1/3 based on that.
// TODO: Differentiate between SCI2.1 and SCI3
if (_mapVersion == kResVersionSci1Late) {
s_sciVersion = SCI_VERSION_2;
return;
} else {
s_sciVersion = SCI_VERSION_2_1;
return;
}
}
// Check for transitive SCI1/SCI1.1 games, like PQ1 here
// If the game has any heap file (here we check for heap file 0), then
// it definitely uses a SCI1.1 kernel
if (testResource(ResourceId(kResourceTypeHeap, 0))) {
s_sciVersion = SCI_VERSION_1_1;
return;
}
switch (_mapVersion) {
case kResVersionSci0Sci1Early:
if (_viewType == kViewVga) {
// VGA
s_sciVersion = SCI_VERSION_1_EARLY;
return;
}
// EGA
if (hasOldScriptHeader()) {
s_sciVersion = SCI_VERSION_0_EARLY;
return;
}
if (oldDecompressors) {
// It's either SCI_VERSION_0_LATE or SCI_VERSION_01
// We first check for SCI1 vocab.999
if (testResource(ResourceId(kResourceTypeVocab, 999))) {
if (hasSci0Voc999()) {
s_sciVersion = SCI_VERSION_0_LATE;
return;
} else {
s_sciVersion = SCI_VERSION_01;
return;
}
}
// If vocab.999 is missing, we try vocab.900
if (testResource(ResourceId(kResourceTypeVocab, 900))) {
if (hasSci1Voc900()) {
s_sciVersion = SCI_VERSION_01;
return;
} else {
s_sciVersion = SCI_VERSION_0_LATE;
return;
}
}
warning("Failed to accurately determine SCI version");
// No parser, we assume SCI_VERSION_01.
s_sciVersion = SCI_VERSION_01;
return;
}
// New decompressors. It's either SCI_VERSION_1_EGA or SCI_VERSION_1_EARLY.
if (hasSci1Voc900()) {
s_sciVersion = SCI_VERSION_1_EGA;
return;
}
// SCI_VERSION_1_EARLY EGA versions seem to be lacking a valid vocab.900.
// If this turns out to be unreliable, we could do some pic resource checks instead.
s_sciVersion = SCI_VERSION_1_EARLY;
return;
case kResVersionSci1Middle:
s_sciVersion = SCI_VERSION_1_MIDDLE;
return;
case kResVersionSci1Late:
if (_volVersion == kResVersionSci11) {
s_sciVersion = SCI_VERSION_1_1;
return;
}
s_sciVersion = SCI_VERSION_1_LATE;
return;
case kResVersionSci11:
s_sciVersion = SCI_VERSION_1_1;
return;
default:
s_sciVersion = SCI_VERSION_NONE;
error("detectSciVersion(): Unable to detect the game's SCI version");
}
}
bool ResourceManager::detectHires() {
// SCI 1.1 and prior is never hires
if (getSciVersion() <= SCI_VERSION_1_1)
return false;
#ifdef ENABLE_SCI32
for (int i = 0; i < 32768; i++) {
Resource *res = findResource(ResourceId(kResourceTypePic, i), 0);
if (res) {
if (READ_LE_UINT16(res->data) == 0x0e) {
// SCI32 picture
uint16 width = READ_LE_UINT16(res->data + 10);
uint16 height = READ_LE_UINT16(res->data + 12);
if ((width == 320) && ((height == 190) || (height == 200)))
return false;
if ((width >= 600) || (height >= 400))
return true;
}
}
}
warning("resMan: Couldn't detect hires");
return false;
#else
error("no sci32 support");
#endif
}
bool ResourceManager::detectFontExtended() {
Resource *res = findResource(ResourceId(kResourceTypeFont, 0), 0);
if (res) {
if (res->size >= 4) {
uint16 numChars = READ_LE_UINT16(res->data + 2);
if (numChars > 0x80)
return true;
}
}
return false;
}
// Functions below are based on PD code by Brian Provinciano (SCI Studio)
bool ResourceManager::hasOldScriptHeader() {
Resource *res = findResource(ResourceId(kResourceTypeScript, 0), 0);
if (!res) {
warning("resMan: Failed to find script.000");
return false;
}
uint offset = 2;
const int objTypes = 17;
while (offset < res->size) {
uint16 objType = READ_LE_UINT16(res->data + offset);
if (!objType) {
offset += 2;
// We should be at the end of the resource now
return offset == res->size;
}
if (objType >= objTypes) {
// Invalid objType
return false;
}
int skip = READ_LE_UINT16(res->data + offset + 2);
if (skip < 2) {
// Invalid size
return false;
}
offset += skip;
}
return false;
}
bool ResourceManager::hasSci0Voc999() {
Resource *res = findResource(ResourceId(kResourceTypeVocab, 999), 0);
if (!res) {
// No vocab present, possibly a demo version
return false;
}
if (res->size < 2)
return false;
uint16 count = READ_LE_UINT16(res->data);
// Make sure there's enough room for the pointers
if (res->size < (uint)count * 2)
return false;
// Iterate over all pointers
for (uint i = 0; i < count; i++) {
// Offset to string
uint16 offset = READ_LE_UINT16(res->data + 2 + count * 2);
// Look for end of string
do {
if (offset >= res->size) {
// Out of bounds
return false;
}
} while (res->data[offset++]);
}
return true;
}
bool ResourceManager::hasSci1Voc900() {
Resource *res = findResource(ResourceId(kResourceTypeVocab, 900), 0);
if (!res )
return false;
if (res->size < 0x1fe)
return false;
uint16 offset = 0x1fe;
while (offset < res->size) {
offset++;
do {
if (offset >= res->size) {
// Out of bounds;
return false;
}
} while (res->data[offset++]);
offset += 3;
}
return offset == res->size;
}
#define READ_UINT16(ptr) (!isSci11Mac() ? READ_LE_UINT16(ptr) : READ_BE_UINT16(ptr))
Common::String ResourceManager::findSierraGameId() {
Resource *script = findResource(ResourceId(kResourceTypeScript, 0), false);
// In SCI0-SCI1, the heap is embedded in the script. In SCI1.1+, it's separated
Resource *heap = 0;
byte *seeker = 0;
Common::String sierraId;
// Seek to the name selector of the first export
if (getSciVersion() < SCI_VERSION_1_1) {
const int nameSelector = 3;
int extraSci0EarlyBytes = (getSciVersion() == SCI_VERSION_0_EARLY) ? 2 : 0;
byte *exportPtr = script->data + extraSci0EarlyBytes + 4 + 2;
seeker = script->data + READ_UINT16(script->data + READ_UINT16(exportPtr) + nameSelector * 2);
} else {
const int nameSelector = 5 + 3;
heap = findResource(ResourceId(kResourceTypeHeap, 0), false);
byte *exportPtr = script->data + 4 + 2 + 2;
seeker = heap->data + READ_UINT16(heap->data + READ_UINT16(exportPtr) + nameSelector * 2);
}
sierraId += (const char *)seeker;
return sierraId;
}
#undef READ_UINT16
SoundResource::SoundResource(uint32 resNumber, ResourceManager *resMan, SciVersion soundVersion) : _resMan(resMan), _soundVersion(soundVersion) {
Resource *resource = _resMan->findResource(ResourceId(kResourceTypeSound, resNumber), true);
int trackNr, channelNr;
if (!resource)
return;
_innerResource = resource;
byte *data, *data2;
byte *dataEnd;
Channel *channel, *sampleChannel;
switch (_soundVersion) {
case SCI_VERSION_0_EARLY:
case SCI_VERSION_0_LATE:
// SCI0 only has a header of 0x11/0x21 byte length and the actual midi track follows afterwards
_trackCount = 1;
_tracks = new Track[_trackCount];
_tracks->digitalChannelNr = -1;
_tracks->type = 0; // Not used for SCI0
_tracks->channelCount = 1;
// Digital sample data included? -> Add an additional channel
if (resource->data[0] == 2)
_tracks->channelCount++;
_tracks->channels = new Channel[_tracks->channelCount];
memset(_tracks->channels, 0, sizeof(Channel) * _tracks->channelCount);
channel = &_tracks->channels[0];
if (_soundVersion == SCI_VERSION_0_EARLY) {
channel->data = resource->data + 0x11;
channel->size = resource->size - 0x11;
} else {
channel->data = resource->data + 0x21;
channel->size = resource->size - 0x21;
}
if (_tracks->channelCount == 2) {
// Digital sample data included
_tracks->digitalChannelNr = 1;
sampleChannel = &_tracks->channels[1];
// we need to find 0xFC (channel terminator) within the data
data = channel->data;
dataEnd = channel->data + channel->size;
while ((data < dataEnd) && (*data != 0xfc))
data++;
// Skip any following 0xFCs as well
while ((data < dataEnd) && (*data == 0xfc))
data++;
// Now adjust channels accordingly
sampleChannel->data = data;
sampleChannel->size = channel->size - (data - channel->data);
channel->size = data - channel->data;
// Read sample header information
//Offset 14 in the header contains the frequency as a short integer. Offset 32 contains the sample length, also as a short integer.
_tracks->digitalSampleRate = READ_LE_UINT16(sampleChannel->data + 14);
_tracks->digitalSampleSize = READ_LE_UINT16(sampleChannel->data + 32);
_tracks->digitalSampleStart = 0;
_tracks->digitalSampleEnd = 0;
sampleChannel->data += 44; // Skip over header
sampleChannel->size -= 44;
}
break;
case SCI_VERSION_1_EARLY:
case SCI_VERSION_1_LATE:
data = resource->data;
// Count # of tracks
_trackCount = 0;
while ((*data++) != 0xFF) {
_trackCount++;
while (*data != 0xFF)
data += 6;
data++;
}
_tracks = new Track[_trackCount];
data = resource->data;
for (trackNr = 0; trackNr < _trackCount; trackNr++) {
// Track info starts with track type:BYTE
// Then the channel information gets appended Unknown:WORD, ChannelOffset:WORD, ChannelSize:WORD
// 0xFF:BYTE as terminator to end that track and begin with another track type
// Track type 0xFF is the marker signifying the end of the tracks
_tracks[trackNr].type = *data++;
// Counting # of channels used
data2 = data;
_tracks[trackNr].channelCount = 0;
while (*data2 != 0xFF) {
data2 += 6;
_tracks[trackNr].channelCount++;
}
_tracks[trackNr].channels = new Channel[_tracks[trackNr].channelCount];
_tracks[trackNr].digitalChannelNr = -1; // No digital sound associated
_tracks[trackNr].digitalSampleRate = 0;
_tracks[trackNr].digitalSampleSize = 0;
_tracks[trackNr].digitalSampleStart = 0;
_tracks[trackNr].digitalSampleEnd = 0;
if (_tracks[trackNr].type != 0xF0) { // Digital track marker - not supported currently
for (channelNr = 0; channelNr < _tracks[trackNr].channelCount; channelNr++) {
channel = &_tracks[trackNr].channels[channelNr];
channel->prio = READ_LE_UINT16(data);
channel->data = resource->data + READ_LE_UINT16(data + 2) + 2;
channel->size = READ_LE_UINT16(data + 4) - 2; // Not counting channel header
channel->number = *(channel->data - 2);
channel->poly = *(channel->data - 1);
channel->time = channel->prev = 0;
if (channel->number == 0xFE) { // Digital channel
_tracks[trackNr].digitalChannelNr = channelNr;
_tracks[trackNr].digitalSampleRate = READ_LE_UINT16(channel->data);
_tracks[trackNr].digitalSampleSize = READ_LE_UINT16(channel->data + 2);
_tracks[trackNr].digitalSampleStart = READ_LE_UINT16(channel->data + 4);
_tracks[trackNr].digitalSampleEnd = READ_LE_UINT16(channel->data + 6);
channel->data += 8; // Skip over header
channel->size -= 8;
}
data += 6;
}
} else {
// Skip over digital track
data += 6;
}
data++; // Skipping 0xFF that closes channels list
}
break;
default:
error("SoundResource: SCI version %d is unsupported", _soundVersion);
}
}
SoundResource::~SoundResource() {
for (int trackNr = 0; trackNr < _trackCount; trackNr++)
delete[] _tracks[trackNr].channels;
delete[] _tracks;
_resMan->unlockResource(_innerResource);
}
#if 0
SoundResource::Track* SoundResource::getTrackByNumber(uint16 number) {
if (_soundVersion <= SCI_VERSION_0_LATE)
return &_tracks[0];
if (/*number >= 0 &&*/number < _trackCount)
return &_tracks[number];
return NULL;
}
#endif
SoundResource::Track *SoundResource::getTrackByType(byte type) {
if (_soundVersion <= SCI_VERSION_0_LATE)
return &_tracks[0];
for (int trackNr = 0; trackNr < _trackCount; trackNr++) {
if (_tracks[trackNr].type == type)
return &_tracks[trackNr];
}
return NULL;
}
SoundResource::Track *SoundResource::getDigitalTrack() {
for (int trackNr = 0; trackNr < _trackCount; trackNr++) {
if (_tracks[trackNr].digitalChannelNr != -1)
return &_tracks[trackNr];
}
return NULL;
}
// Gets the filter mask for SCI0 sound resources
int SoundResource::getChannelFilterMask(int hardwareMask, bool wantsRhythm) {
byte *data = _innerResource->data;
int channelMask = 0;
if (_soundVersion > SCI_VERSION_0_LATE)
return 0;
data++; // Skip over digital sample flag
for (int channelNr = 0; channelNr < 16; channelNr++) {
channelMask = channelMask >> 1;
byte flags;
if (_soundVersion == SCI_VERSION_0_EARLY) {
// Each channel is specified by a single byte
// Upper 4 bits of the byte is a voices count
// Lower 4 bits -> bit 0 set: use for AdLib
// bit 1 set: use for PCjr
// bit 2 set: use for PC speaker
// bit 3 set and bit 0 clear: control channel (15)
// bit 3 set and bit 0 set: rhythm channel (9)
// Note: control channel is dynamically assigned inside the drivers,
// but seems to be fixed at 15 in the song data.
flags = *data++;
// Get device bits
flags &= 0x7;
} else {
// Each channel is specified by 2 bytes
// 1st byte is voices count
// 2nd byte is play mask, which specifies if the channel is supposed to be played
// by the corresponding hardware
// Skip voice count
data++;
flags = *data++;
}
bool play;
switch (channelNr) {
case 15:
// Always play control channel
play = true;
break;
case 9:
// Play rhythm channel when requested
play = wantsRhythm;
break;
default:
// Otherwise check for flag
play = flags & hardwareMask;
}
if (play) {
// This Channel is supposed to be played by the hardware
channelMask |= 0x8000;
}
}
return channelMask;
}
byte SoundResource::getInitialVoiceCount(byte channel) {
byte *data = _innerResource->data;
if (_soundVersion > SCI_VERSION_0_LATE)
return 0; // TODO
data++; // Skip over digital sample flag
if (_soundVersion == SCI_VERSION_0_EARLY)
return data[channel] >> 4;
else
return data[channel * 2];
}
} // End of namespace Sci
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