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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 3 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, see <http://www.gnu.org/licenses/>.
*
*/
#include "asylum/respack.h"
namespace Asylum {
const struct {
int cdNumber;
uint resourceId;
uint size;
} patchedSizes[] = {
{1, 0x800402B0, 40146626}, {3, 0x800403EB, 18177962}, {2, 0x8004071D, 40501676},
{1, 0x8004072D, 7349518}, {2, 0x80040733, 40367314}, {1, 0x8004073B, 5534658},
{2, 0x8004073C, 40347616}, {1, 0x80040745, 4333670}, {2, 0x80040746, 40214368},
{3, 0x8004074A, 17247084}, {2, 0x8004074C, 40072902}, {3, 0x80040756, 15741212},
{2, 0x8004075E, 39099030}, {1, 0x8004076E, 1122128}, {2, 0x80040781, 36131104},
{3, 0x80040782, 15468752}, {2, 0x80040783, 36119940}, {1, 0x80040786, 755152},
{2, 0x800408B9, 18430980}, {3, 0x8004093A, 6679208}, {1, 0x8004093D, 383318},
{3, 0x80040942, 4502532}, {2, 0x80040968, 3920338}, {3, 0x80040970, 654212},
{2, 0x8004097D, 524576}, {1, 0x8004097F, 52574}, {2, 0x80040983, 289832},
};
//////////////////////////////////////////////////////////////////////////
// ResourceManager
//////////////////////////////////////////////////////////////////////////
ResourceManager::ResourceManager(AsylumEngine *vm) : _cdNumber(-1), _musicPackId(kResourcePackInvalid), _vm(vm) {
}
ResourceManager::~ResourceManager() {
for (ResourceCache::const_iterator it = _resources.begin(); it != _resources.end(); it++)
delete it->_value;
for (ResourceCache::const_iterator it = _music.begin(); it != _music.end(); it++)
delete it->_value;
}
ResourceEntry *ResourceManager::get(ResourceId id) {
ResourcePackId packId = RESOURCE_PACK(id);
uint16 index = RESOURCE_INDEX(id);
// Check if we need to load a music pack
bool isMusicPack = (packId == kResourcePackMusic);
// Check that a music pack has been set
if (isMusicPack && _musicPackId == kResourcePackInvalid)
error("[ResourceManager::get] Current music pack Id has not been set!");
ResourceCache *cache = isMusicPack ? &_music : &_resources;
// Try getting the resource pack
if (!cache->contains(packId)) {
ResourcePack *pack;
if (isMusicPack) {
if (_vm->checkGameVersion("Demo"))
pack = new ResourcePack("res.002");
else
pack = new ResourcePack(Common::Path(Common::String::format("mus.%03d", _musicPackId)));
} else {
if (packId == kResourcePackSharedSound) {
if (_vm->checkGameVersion("Demo")) {
pack = new ResourcePack("res.004");
cache->setVal(packId, pack);
return cache->getVal(packId)->get(index);
}
if (_cdNumber == -1)
error("[ResourceManager::get] Cd number has not been set!");
pack = new ResourcePack(Common::Path(Common::String::format("res.%01d%02d", _cdNumber, packId)));
// WORKAROUND to support combined resource packs (used by GOG and Steam versions)
if (pack->_packFile.size() == 299872422)
for (int i = 0; i < ARRAYSIZE(patchedSizes); i++)
if (_cdNumber == patchedSizes[i].cdNumber)
pack->_resources[RESOURCE_INDEX(patchedSizes[i].resourceId)].size = patchedSizes[i].size;
} else {
pack = new ResourcePack(Common::Path(Common::String::format("res.%03d", packId)));
}
}
cache->setVal(packId, pack);
}
return cache->getVal(packId)->get(index);
}
void ResourceManager::unload(ResourcePackId id) {
if (_resources.contains(id)) {
delete _resources.getVal(id);
_resources.erase(id);
}
if (_music.contains(id)) {
delete _music.getVal(id);
_music.erase(id);
}
}
//////////////////////////////////////////////////////////////////////////
// ResourcePack
//////////////////////////////////////////////////////////////////////////
ResourcePack::ResourcePack(const Common::Path &filename) {
init(filename);
}
ResourcePack::~ResourcePack() {
for (uint32 i = 0; i < _resources.size(); i++)
delete [] _resources[i].data;
_resources.clear();
_packFile.close();
}
void ResourcePack::init(const Common::Path &filename) {
if (!_packFile.open(filename))
error("[ResourcePack::init] Could not open resource file: %s", filename.toString(Common::Path::kNativeSeparator).c_str());
uint32 entryCount = _packFile.readUint32LE();
_resources.resize(entryCount);
uint32 prevOffset = _packFile.readUint32LE();
uint32 nextOffset = 0;
for (uint32 i = 0; i < entryCount; i++) {
ResourceEntry entry;
entry.offset = prevOffset;
// Read the offset of the next entry to determine the size of this one
nextOffset = (i < entryCount - 1) ? _packFile.readUint32LE() : (uint32)_packFile.size();
entry.size = (nextOffset > 0) ? nextOffset - prevOffset : (uint32)_packFile.size() - prevOffset;
entry.data = nullptr;
_resources[i] = entry;
prevOffset = nextOffset;
}
}
ResourceEntry *ResourcePack::get(uint16 index) {
if (index > _resources.size() - 1)
return nullptr;
if (!_resources[index].data) {
// Load the requested resource if it's not loaded already
_packFile.seek(_resources[index].offset, SEEK_SET);
_resources[index].data = new byte[_resources[index].size];
_packFile.read(_resources[index].data, _resources[index].size);
}
return &_resources[index];
}
} // end of namespace Asylum
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