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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.
*
*/
// RSC Resource file management module (SAGA 1, used in ITE)
#include "saga/saga.h"
#include "saga/resource.h"
namespace Saga {
#define ID_MIDI MKTAG('M','i','d','i')
bool ResourceContext_RSC::loadMacMIDI() {
// Sanity check
if (_fileSize < RSC_MIN_FILESIZE + MAC_BINARY_HEADER_SIZE)
return false;
_file.seek(83);
int macDataSize = _file.readSint32BE();
int macResOffset = MAC_BINARY_HEADER_SIZE + (((macDataSize + 127) >> 7) << 7);
_file.seek(macResOffset);
uint32 macDataOffset = _file.readUint32BE() + macResOffset;
uint32 macMapOffset = _file.readUint32BE() + macResOffset;
_file.seek(macMapOffset + 22);
_file.readUint16BE(); // resAttr
int16 typeOffset = _file.readUint16BE();
_file.readUint16BE(); // nameOffset
uint16 numTypes = _file.readUint16BE() + 1;
_file.seek(macMapOffset + typeOffset + 2);
// Find the MIDI files
for (uint16 i = 0; i < numTypes; i++) {
uint32 id = _file.readUint32BE();
uint16 items = _file.readUint16BE() + 1;
uint16 offset = _file.readUint16BE();
if (id == ID_MIDI) {
for (uint16 curMidi = 0; curMidi < items; curMidi++) {
// Jump to the header of the entry and read its fields
_file.seek(offset + macMapOffset + typeOffset + curMidi * 12);
uint16 midiID = _file.readUint16BE();
_file.readUint16BE(); // nameOffset
uint32 midiOffset = _file.readUint32BE() & 0xFFFFFF;
_file.readUint32BE(); // macResSize
// Jump to the actual data and read the file size
_file.seek(macDataOffset + midiOffset);
uint32 midiSize = _file.readUint32BE();
// Add the entry
if (_table.size() <= midiID)
_table.resize(midiID + 1);
_table[midiID].offset = macDataOffset + midiOffset + 4;
_table[midiID].size = midiSize;
}
}
}
return true;
}
void ResourceContext_RSC::processPatches(Resource *resource, const GamePatchDescription *patchFiles) {
const GamePatchDescription *patchDescription;
ResourceData *resourceData;
// Process external patch files
for (patchDescription = patchFiles; patchDescription && patchDescription->fileName; ++patchDescription) {
if ((patchDescription->fileType & _fileType) != 0) {
if (patchDescription->resourceId < _table.size()) {
resourceData = &_table[patchDescription->resourceId];
// Check if we've already found a patch for this resource. One is enough.
if (!resourceData->patchData) {
resourceData->patchData = new PatchData(patchDescription->fileName);
if (resourceData->patchData->_patchFile->open(patchDescription->fileName)) {
resourceData->offset = 0;
resourceData->size = resourceData->patchData->_patchFile->size();
// The patched ITE file is in memory, so close the patch file
resourceData->patchData->_patchFile->close();
} else {
delete resourceData->patchData;
resourceData->patchData = NULL;
}
}
}
}
}
}
} // End of namespace Saga
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