mirror of
https://github.com/libretro/scummvm.git
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109 lines
3.2 KiB
C++
109 lines
3.2 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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#ifdef ENABLE_SAGA2
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// HRS Resource file management module (SAGA 2, used in DINO and FTA2)
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#include "saga/saga.h"
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#include "saga/actor.h"
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#include "saga/animation.h"
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#include "saga/interface.h"
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#include "saga/music.h"
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#include "saga/resource.h"
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#include "saga/scene.h"
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#include "saga/sndres.h"
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#include "engines/advancedDetector.h"
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#include "common/endian.h"
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namespace Saga {
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void readElement(Common::File *file, Saga::ResourceData *element) {
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element->id = file->readUint32BE();
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element->offset = file->readUint32LE();
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element->size = file->readUint32LE();
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debug(3, "Entry: id %u, offset %u, size %u", element->id, (uint)element->offset, (uint)element->size);
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}
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bool Resource_HRS::loadResContext_v2(ResourceContext *context, uint32 contextSize) {
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ResourceData *origin = new ResourceData();
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uint32 firstEntryOffset;
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uint32 tableSize;
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int i, count;
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const uint32 resourceSize = 4 + 4 + 4; // id, size, offset
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debug(3, "Context %s =====", context->fileName);
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context->file->seek(0, SEEK_SET);
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readElement(context->file, origin);
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// Check if the file is valid
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if (origin->id != MKID_BE('HRES')) { // header
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free(origin);
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return false;
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}
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// Read offset of first entry
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context->file->seek(origin->offset - sizeof(uint32), SEEK_SET);
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firstEntryOffset = context->file->readUint32LE();
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// Allocate buffers for table, categories and data
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context->categories = (ResourceData *) calloc(origin->size / resourceSize, sizeof(*context->categories));
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tableSize = origin->offset - firstEntryOffset - sizeof(uint32);
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context->table = (ResourceData *) calloc(tableSize / resourceSize, sizeof(*context->table));
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if (context->categories == NULL || context->table == NULL) {
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free(origin);
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return false;
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}
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// Read categories
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count = origin->size / resourceSize;
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debug(3, "Categories: %d =====", count);
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for (i = 0; i < count; i++) {
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readElement(context->file, &context->categories[i]);
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}
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context->file->seek(firstEntryOffset, SEEK_SET);
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// Read table entries
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count = tableSize / resourceSize;
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debug(3, "Entries: %d =====", count);
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for (i = 0; i < count; i++) {
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readElement(context->file, &context->table[i]);
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}
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context->count = tableSize / resourceSize;
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free(origin);
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return true;
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}
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} // End of namespace Saga
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#endif
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