mirror of
https://github.com/libretro/scummvm.git
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88 lines
2.4 KiB
C++
88 lines
2.4 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* $URL$
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* $Id$
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*
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*/
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#include "common/debug.h"
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#include "mohawk/myst.h"
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#include "mohawk/resource_cache.h"
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namespace Mohawk {
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ResourceCache::ResourceCache() {
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enabled = true;
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}
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ResourceCache::~ResourceCache() {
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clear();
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}
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void ResourceCache::clear() {
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if (!enabled)
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return;
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debugC(kDebugCache, "Clearing Cache...");
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// TODO: Not sure if need to explicitly delete DataObject.data element ie.
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// returned by readStream method here.
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store.clear();
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}
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void ResourceCache::add(uint32 tag, uint16 id, Common::SeekableReadStream *data) {
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if (!enabled)
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return;
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debugC(kDebugCache, "Adding item %d - tag 0x%04X id %d", store.size(), tag, id);
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DataObject current;
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current.tag = tag;
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current.id = id;
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uint32 dataCurPos = data->pos();
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current.data = data->readStream(data->size());
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data->seek(dataCurPos);
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store.push_back(current);
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}
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// Returns NULL if not found
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Common::SeekableReadStream *ResourceCache::search(uint32 tag, uint16 id) {
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if (!enabled)
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return NULL;
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debugC(kDebugCache, "Searching for tag 0x%04X id %d", tag, id);
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for (uint32 i = 0; i < store.size(); i++) {
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if (tag == store[i].tag && id == store[i].id) {
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debugC(kDebugCache, "Found cached tag 0x%04X id %u", tag, id);
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uint32 dataCurPos = store[i].data->pos();
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Common::SeekableReadStream *ret = store[i].data->readStream(store[i].data->size());
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store[i].data->seek(dataCurPos);
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return ret;
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}
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}
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debugC(kDebugCache, "tag 0x%04X id %d not found", tag, id);
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return NULL;
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}
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} // End of namespace Mohawk
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