mirror of
https://github.com/libretro/scummvm.git
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84 lines
2.4 KiB
C++
84 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 modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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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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*
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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, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include "common/compression/dcl.h"
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#include "neverhood/nhcarchive.h"
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namespace Neverhood {
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bool NhcArchive::open(const Common::String &filename, bool isOptional) {
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_entries.clear();
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if (!_fd.open(filename)) {
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if (!isOptional)
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error("NhcArchive::open() Could not open %s", filename.c_str());
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return false;
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}
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uint32 id = _fd.readUint32BE();
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if (id != MKTAG('N', 'H', 'C', 0))
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return false;
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/* version = */ _fd.readUint32LE();
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/* totalSize = */ _fd.readUint32LE();
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uint32 fileCount = _fd.readUint32LE();
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debug(4, "%s: fileCount = %d", filename.c_str(), fileCount);
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_entries.reserve(fileCount);
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// Load file hashes
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for (uint i = 0; i < fileCount; i++) {
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NhcArchiveEntry entry;
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entry.fileHash = _fd.readUint32LE();
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entry.type = _fd.readUint32LE();
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entry.offset = _fd.readUint32LE();
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entry.size = _fd.readUint32LE();
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_entries.push_back(entry);
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}
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return true;
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}
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void NhcArchive::load(uint index, byte *buffer, uint32 size) {
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load(&_entries[index], buffer, size);
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}
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void NhcArchive::load(NhcArchiveEntry *entry, byte *buffer, uint32 size) {
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Common::StackLock lock(_mutex);
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_fd.seek(entry->offset);
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if (size == 0)
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size = entry->size;
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_fd.read(buffer, size);
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}
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Common::SeekableReadStream *NhcArchive::createStream(uint index) {
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return createStream(&_entries[index]);
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}
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Common::SeekableReadStream *NhcArchive::createStream(NhcArchiveEntry *entry) {
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return new Common::SafeMutexedSeekableSubReadStream(&_fd, entry->offset, entry->offset + entry->size,
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DisposeAfterUse::NO, _mutex);
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}
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} // End of namespace Neverhood
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