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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.
*
*/
#include "common/file.h"
#include "toltecs/toltecs.h"
#include "toltecs/resource.h"
namespace Toltecs {
/* ArchiveReader */
ArchiveReader::ArchiveReader() {
_offsets = 0;
}
ArchiveReader::~ArchiveReader() {
delete[] _offsets;
}
void ArchiveReader::openArchive(const char *filename) {
open(filename);
uint32 firstOffs = readUint32LE();
uint count = firstOffs / 4;
_offsets = new uint32[count];
_offsets[0] = firstOffs;
for (uint i = 1; i < count; i++)
_offsets[i] = readUint32LE();
}
uint32 ArchiveReader::openResource(uint resIndex) {
uint32 resourceSize = getResourceSize(resIndex);
seek(_offsets[resIndex]);
return resourceSize;
}
void ArchiveReader::closeResource() {
}
uint32 ArchiveReader::getResourceSize(uint resIndex) {
return _offsets[resIndex + 1] - _offsets[resIndex];
}
void ArchiveReader::dump(uint resIndex) {
int32 resourceSize = getResourceSize(resIndex);
byte *data = new byte[resourceSize];
Common::String fn = Common::String::format("toltecs_res.%03d", resIndex);
openResource(resIndex);
read(data, resourceSize);
closeResource();
Common::DumpFile o;
o.open(fn);
o.write(data, resourceSize);
o.finalize();
o.close();
delete[] data;
}
/* ResourceCache */
ResourceCache::ResourceCache(ToltecsEngine *vm) : _vm(vm) {
}
ResourceCache::~ResourceCache() {
purgeCache();
}
void ResourceCache::purgeCache() {
for (ResourceMap::iterator iter = _cache.begin(); iter != _cache.end(); ++iter) {
delete[] iter->_value->data;
delete iter->_value;
iter->_value = 0;
}
_cache.clear();
}
Resource *ResourceCache::load(uint resIndex) {
ResourceMap::iterator item = _cache.find(resIndex);
if (item != _cache.end()) {
debug(1, "ResourceCache::load(%d) From cache", resIndex);
return (*item)._value;
} else {
debug(1, "ResourceCache::load(%d) From disk", resIndex);
int32 curPos = _vm->_arc->pos();
Resource *resItem = new Resource();
resItem->size = _vm->_arc->openResource(resIndex);
resItem->data = new byte[resItem->size];
_vm->_arc->read(resItem->data, resItem->size);
_vm->_arc->closeResource();
_vm->_arc->seek(curPos);
_cache[resIndex] = resItem;
return resItem;
}
}
} // End of namespace Toltecs
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