diff options
Diffstat (limited to 'engines/saga/resource_rsc.cpp')
| -rw-r--r-- | engines/saga/resource_rsc.cpp | 212 |
1 files changed, 212 insertions, 0 deletions
diff --git a/engines/saga/resource_rsc.cpp b/engines/saga/resource_rsc.cpp new file mode 100644 index 0000000000..8176d6ec02 --- /dev/null +++ b/engines/saga/resource_rsc.cpp @@ -0,0 +1,212 @@ +/* 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. + * + * $URL$ + * $Id$ + * + */ + +// RSC Resource file management module (SAGA 1, used in ITE) + +#include "saga/saga.h" + +#include "saga/actor.h" +#include "saga/animation.h" +#include "saga/interface.h" +#include "saga/music.h" +#include "saga/resource.h" +#include "saga/scene.h" +#include "saga/sndres.h" + +#include "common/advancedDetector.h" + +namespace Saga { + +struct MacResMap { + int16 resAttr; + int16 typeOffset; + int16 nameOffset; + int16 numTypes; +}; + +struct MacResource { + int16 id; + int16 nameOffset; + byte attr; + int32 dataOffset; + byte name[255]; +}; + +struct MacResType { + uint32 id; + int16 items; + int16 maxItemId; + int16 offset; + MacResource *resources; +}; + +#define ID_MIDI MKID_BE('Midi') + +uint32 Resource_RSC::convertResourceId(uint32 resourceId) { + + if (_vm->isMacResources()) { + if (resourceId > 1537) { + return resourceId - 2; + } else { + if (resourceId == 1535 || resourceId == 1536) { + error("Wrong resource number %d for Mac ITE", resourceId); + } + } + } + + return resourceId; +} + +bool Resource_RSC::loadMacContext(ResourceContext *context) { + int32 macDataSize, macDataSizePad; + int32 macResSize, macResSizePad; + int32 macResOffset; + + uint32 macMapLength; + uint32 macDataLength; + uint32 macMapOffset; + uint32 macDataOffset; + + MacResMap macResMap; + MacResType *macResTypes; + + MacResType *macResType; + MacResource *macResource; + int i, j; + byte macNameLen; + bool notSagaContext = false; + + if (context->file->size() < RSC_MIN_FILESIZE + MAC_BINARY_HEADER_SIZE) { + return false; + } + + if (context->file->readByte() != 0) { + return false; + } + context->file->readByte(); //MAX Name Len + context->file->seek(74); + if (context->file->readByte() != 0) { + return false; + } + context->file->seek(82); + if (context->file->readByte() != 0) { + return false; + } + + macDataSize = context->file->readSint32BE(); + macResSize = context->file->readSint32BE(); + macDataSizePad = (((macDataSize + 127) >> 7) << 7); + macResSizePad = (((macResSize + 127) >> 7) << 7); + + macResOffset = MAC_BINARY_HEADER_SIZE + macDataSizePad; + context->file->seek(macResOffset); + + macDataOffset = context->file->readUint32BE() + macResOffset; + macMapOffset = context->file->readUint32BE() + macResOffset; + macDataLength = context->file->readUint32BE(); + macMapLength = context->file->readUint32BE(); + + if (macDataOffset >= (uint)context->file->size() || macMapOffset >= (uint)context->file->size() || + macDataLength + macMapLength > (uint)context->file->size()) { + return false; + } + + context->file->seek(macMapOffset + 22); + + macResMap.resAttr = context->file->readUint16BE(); + macResMap.typeOffset = context->file->readUint16BE(); + macResMap.nameOffset = context->file->readUint16BE(); + macResMap.numTypes = context->file->readUint16BE(); + macResMap.numTypes++; + + context->file->seek(macMapOffset + macResMap.typeOffset + 2); + + macResTypes = (MacResType *)calloc(macResMap.numTypes, sizeof(*macResTypes)); + + for (i = macResMap.numTypes, macResType = macResTypes; i > 0; i--, macResType++) { + macResType->id = context->file->readUint32BE(); + macResType->items = context->file->readUint16BE(); + macResType->offset = context->file->readUint16BE(); + macResType->items++; + macResType->resources = (MacResource*)calloc(macResType->items, sizeof(*macResType->resources)); + } + + for (i = macResMap.numTypes, macResType = macResTypes; i > 0; i--, macResType++) { + context->file->seek(macResType->offset + macMapOffset + macResMap.typeOffset); + + for (j = macResType->items, macResource = macResType->resources; j > 0; j--, macResource++) { + macResource->id = context->file->readUint16BE(); + macResource->nameOffset = context->file->readUint16BE(); + macResource->dataOffset = context->file->readUint32BE(); + macResSize = context->file->readUint32BE(); + + macResource->attr = macResource->dataOffset >> 24; + macResource->dataOffset &= 0xFFFFFF; + if (macResource->id > macResType->maxItemId) { + macResType->maxItemId = macResource->id; + } + } + + for (j = macResType->items, macResource = macResType->resources; j > 0; j--, macResource++) { + if (macResource->nameOffset != -1) { + context->file->seek(macResource->nameOffset + macMapOffset + macResMap.nameOffset); + macNameLen = context->file->readByte(); + context->file->read(macResource->name, macNameLen); + } + } + } + +// + for (i = macResMap.numTypes, macResType = macResTypes; i > 0; i--, macResType++) { + //getting offsets & sizes of midi + if (((context->fileType & GAME_MUSICFILE_GM) > 0) && (macResType->id == ID_MIDI)) { + + context->count = macResType->maxItemId + 1; + context->table = (ResourceData *)calloc(context->count, sizeof(*context->table)); + for (j = macResType->items, macResource = macResType->resources; j > 0; j--, macResource++) { + context->file->seek(macDataOffset + macResource->dataOffset); + context->table[macResource->id].size = context->file->readUint32BE(); + context->table[macResource->id].offset = context->file->pos(); + } + notSagaContext = true; + break; + } + } + +//free + for (i = 0; i < macResMap.numTypes; i++) { + free(macResTypes[i].resources); + } + free(macResTypes); + + if ((!notSagaContext) && (!loadResContext(context, MAC_BINARY_HEADER_SIZE, macDataSize))) { + return false; + } + + return true; +} + + +} // End of namespace Saga |