Initial commit
This commit is contained in:
421
engines/scumm/imuse_digi/dimuse_bndmgr.cpp
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421
engines/scumm/imuse_digi/dimuse_bndmgr.cpp
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/* 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/scummsys.h"
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#include "scumm/scumm.h"
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#include "scumm/util.h"
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#include "scumm/file.h"
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#include "scumm/imuse_digi/dimuse_bndmgr.h"
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#include "scumm/imuse_digi/dimuse_codecs.h"
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namespace Scumm {
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BundleDirCache::BundleDirCache(const ScummEngine *vm) : _vm(vm) {
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for (int fileId = 0; fileId < ARRAYSIZE(_bundleDirCache); fileId++) {
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_bundleDirCache[fileId].bundleTable = nullptr;
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_bundleDirCache[fileId].fileName[0] = 0;
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_bundleDirCache[fileId].numFiles = 0;
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_bundleDirCache[fileId].isCompressed = false;
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_bundleDirCache[fileId].indexTable = nullptr;
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}
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}
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BundleDirCache::~BundleDirCache() {
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for (int fileId = 0; fileId < ARRAYSIZE(_bundleDirCache); fileId++) {
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free(_bundleDirCache[fileId].bundleTable);
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free(_bundleDirCache[fileId].indexTable);
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}
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}
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BundleDirCache::AudioTable *BundleDirCache::getTable(int slot) {
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return _bundleDirCache[slot].bundleTable;
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}
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int32 BundleDirCache::getNumFiles(int slot) {
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return _bundleDirCache[slot].numFiles;
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}
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BundleDirCache::IndexNode *BundleDirCache::getIndexTable(int slot) {
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return _bundleDirCache[slot].indexTable;
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}
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bool BundleDirCache::isSndDataExtComp(int slot) {
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return _bundleDirCache[slot].isCompressed;
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}
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int BundleDirCache::matchFile(const char *filename) {
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int32 tag, offset;
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bool found = false;
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int freeSlot = -1;
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int fileId;
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for (fileId = 0; fileId < ARRAYSIZE(_bundleDirCache); fileId++) {
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if ((_bundleDirCache[fileId].bundleTable == nullptr) && (freeSlot == -1)) {
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freeSlot = fileId;
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}
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if (scumm_stricmp(filename, _bundleDirCache[fileId].fileName) == 0) {
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found = true;
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break;
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}
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}
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if (!found) {
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ScummFile file(_vm);
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if (g_scumm->openFile(file, filename) == false) {
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error("BundleDirCache::matchFile() Can't open bundle file: %s", filename);
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return false;
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}
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if (freeSlot == -1)
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error("BundleDirCache::matchFileFile() Can't find free slot for file bundle dir cache");
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tag = file.readUint32BE();
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if (tag == MKTAG('L','B','2','3'))
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_bundleDirCache[freeSlot].isCompressed = true;
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offset = file.readUint32BE();
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Common::strlcpy(_bundleDirCache[freeSlot].fileName, filename, sizeof(_bundleDirCache[freeSlot].fileName));
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_bundleDirCache[freeSlot].numFiles = file.readUint32BE();
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_bundleDirCache[freeSlot].bundleTable = (AudioTable *)malloc(_bundleDirCache[freeSlot].numFiles * sizeof(AudioTable));
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assert(_bundleDirCache[freeSlot].bundleTable);
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file.seek(offset, SEEK_SET);
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_bundleDirCache[freeSlot].indexTable =
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(IndexNode *)calloc(_bundleDirCache[freeSlot].numFiles, sizeof(IndexNode));
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assert(_bundleDirCache[freeSlot].indexTable);
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for (int32 i = 0; i < _bundleDirCache[freeSlot].numFiles; i++) {
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char name[24], c;
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int32 z = 0;
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int32 z2;
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if (tag == MKTAG('L','B','2','3')) {
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file.read(_bundleDirCache[freeSlot].bundleTable[i].filename, 24);
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} else {
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for (z2 = 0; z2 < 8; z2++)
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if ((c = file.readByte()) != 0)
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name[z++] = c;
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name[z++] = '.';
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for (z2 = 0; z2 < 4; z2++)
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if ((c = file.readByte()) != 0)
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name[z++] = c;
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name[z] = '\0';
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Common::strlcpy(_bundleDirCache[freeSlot].bundleTable[i].filename, name, sizeof(_bundleDirCache[freeSlot].bundleTable[i].filename));
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}
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_bundleDirCache[freeSlot].bundleTable[i].offset = file.readUint32BE();
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_bundleDirCache[freeSlot].bundleTable[i].size = file.readUint32BE();
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Common::strlcpy(_bundleDirCache[freeSlot].indexTable[i].filename, _bundleDirCache[freeSlot].bundleTable[i].filename, sizeof(_bundleDirCache[freeSlot].indexTable[i].filename));
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_bundleDirCache[freeSlot].indexTable[i].index = i;
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}
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qsort(_bundleDirCache[freeSlot].indexTable, _bundleDirCache[freeSlot].numFiles,
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sizeof(IndexNode), (int (*)(const void *, const void *))scumm_stricmp);
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return freeSlot;
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} else {
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return fileId;
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}
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}
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BundleMgr::BundleMgr(const ScummEngine *vm, BundleDirCache *cache) {
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_cache = cache;
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_bundleTable = nullptr;
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_compTable = nullptr;
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_numFiles = 0;
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_numCompItems = 0;
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_lastBlockDecompressedSize = 0;
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_curSampleId = -1;
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_fileBundleId = -1;
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_file = new ScummFile(vm);
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_compInputBuff = nullptr;
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}
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BundleMgr::~BundleMgr() {
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close();
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delete _file;
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}
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Common::SeekableReadStream *BundleMgr::getFile(const char *filename, int32 &offset, int32 &size) {
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BundleDirCache::IndexNode target;
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Common::strlcpy(target.filename, filename, sizeof(target.filename));
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BundleDirCache::IndexNode *found = (BundleDirCache::IndexNode *)bsearch(&target, _indexTable, _numFiles,
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sizeof(BundleDirCache::IndexNode), (int (*)(const void *, const void *))scumm_stricmp);
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if (found) {
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_file->seek(_bundleTable[found->index].offset, SEEK_SET);
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offset = _bundleTable[found->index].offset;
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size = _bundleTable[found->index].size;
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return _file;
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}
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return nullptr;
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}
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bool BundleMgr::open(const char *filename, bool &isCompressed, bool errorFlag) {
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if (_file->isOpen())
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return true;
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if (g_scumm->openFile(*_file, filename) == false) {
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if (errorFlag) {
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error("BundleMgr::open() Can't open bundle file: %s", filename);
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} else {
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warning("BundleMgr::open() Can't open bundle file: %s", filename);
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}
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return false;
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}
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int slot = _cache->matchFile(filename);
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assert(slot != -1);
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isCompressed = _cache->isSndDataExtComp(slot);
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_numFiles = _cache->getNumFiles(slot);
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assert(_numFiles);
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_bundleTable = _cache->getTable(slot);
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_indexTable = _cache->getIndexTable(slot);
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assert(_bundleTable);
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_compTableLoaded = false;
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_isUncompressed = false;
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_outputSize = 0;
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_lastBlockDecompressedSize = 0;
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_curDecompressedFilePos = 0;
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_lastBlock = -1;
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return true;
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}
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void BundleMgr::close() {
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if (_file->isOpen()) {
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_file->close();
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_bundleTable = nullptr;
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_numFiles = 0;
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_numCompItems = 0;
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_lastBlockDecompressedSize = 0;
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_curDecompressedFilePos = 0;
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_compTableLoaded = false;
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_isUncompressed = false;
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_lastBlock = -1;
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_outputSize = 0;
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_curSampleId = -1;
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free(_compTable);
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_compTable = nullptr;
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free(_compInputBuff);
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_compInputBuff = nullptr;
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}
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}
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bool BundleMgr::loadCompTable(int32 index) {
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_file->seek(_bundleTable[index].offset, SEEK_SET);
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uint32 tag = _file->readUint32BE();
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if (tag == MKTAG('i','M','U','S')) {
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_isUncompressed = true;
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return true;
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}
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_numCompItems = _file->readUint32BE();
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assert(_numCompItems > 0);
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_file->seek(4, SEEK_CUR);
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_lastBlockDecompressedSize = _file->readUint32BE();
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if (tag != MKTAG('C','O','M','P')) {
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debug("BundleMgr::loadCompTable() Compressed sound %d (%s:%d) invalid (%s)", index, _file->getDebugName().c_str(), _bundleTable[index].offset, tag2str(tag));
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return false;
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}
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_compTable = (CompTable *)malloc(sizeof(CompTable) * _numCompItems);
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assert(_compTable);
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int32 maxSize = 0;
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for (int i = 0; i < _numCompItems; i++) {
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_compTable[i].offset = _file->readUint32BE();
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_compTable[i].size = _file->readUint32BE();
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_compTable[i].codec = _file->readUint32BE();
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_file->seek(4, SEEK_CUR);
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if (_compTable[i].size > maxSize)
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maxSize = _compTable[i].size;
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}
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// CMI hack: one more byte at the end of input buffer
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_compInputBuff = (byte *)malloc(maxSize + 1);
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assert(_compInputBuff);
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return true;
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}
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int32 BundleMgr::seekFile(int32 offset, int mode) {
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// We don't actually seek the file, but instead try to find that the specified offset exists
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// within the decompressed blocks, and save that offset in _curDecompressedFilePos
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int result = 0;
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switch (mode) {
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case SEEK_END:
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if (_isUncompressed) {
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result = offset + _bundleTable[_curSampleId].size;
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} else {
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result = offset + ((_numCompItems - 1) * DIMUSE_BUN_CHUNK_SIZE) + _lastBlockDecompressedSize;
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}
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_curDecompressedFilePos = result;
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break;
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case SEEK_SET:
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default:
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if (_isUncompressed) {
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result = offset;
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_curDecompressedFilePos = result;
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} else {
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int destBlock = offset / DIMUSE_BUN_CHUNK_SIZE + (offset % DIMUSE_BUN_CHUNK_SIZE != 0);
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if (destBlock <= _numCompItems) {
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result = offset;
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_curDecompressedFilePos = result;
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}
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}
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break;
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}
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return result;
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}
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int32 BundleMgr::readFile(const char *name, int32 size, byte **comp_final, bool header_outside) {
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int32 final_size = 0;
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if (!_file->isOpen()) {
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error("BundleMgr::readFile() File is not open");
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return 0;
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}
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// Find the sound in the bundle
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BundleDirCache::IndexNode target;
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strncpy(target.filename, name, sizeof(target.filename));
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target.filename[sizeof(target.filename) - 1] = '\0';
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BundleDirCache::IndexNode *found = (BundleDirCache::IndexNode *)bsearch(&target, _indexTable, _numFiles,
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sizeof(BundleDirCache::IndexNode), (int(*)(const void *, const void *))scumm_stricmp);
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if (found) {
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int32 i, finalSize, outputSize;
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int skip, firstBlock, lastBlock;
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int headerSize = 0;
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assert(0 <= found->index && found->index < _numFiles);
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if (_file->isOpen() == false) {
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error("BundleMgr::readFile() File is not open");
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return 0;
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}
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if (_curSampleId == -1)
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_curSampleId = found->index;
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assert(_curSampleId == found->index);
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if (!_compTableLoaded) {
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_compTableLoaded = loadCompTable(found->index);
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if (!_compTableLoaded)
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return 0;
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}
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if (_isUncompressed) {
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_file->seek(_bundleTable[found->index].offset + _curDecompressedFilePos + headerSize, SEEK_SET);
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*comp_final = (byte *)malloc(size);
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assert(*comp_final);
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_file->read(*comp_final, size);
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_curDecompressedFilePos += size;
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return size;
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}
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firstBlock = (_curDecompressedFilePos + headerSize) / DIMUSE_BUN_CHUNK_SIZE;
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lastBlock = (_curDecompressedFilePos + headerSize + size - 1) / DIMUSE_BUN_CHUNK_SIZE;
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// Clip last_block by the total number of blocks (= "comp items")
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if ((lastBlock >= _numCompItems) && (_numCompItems > 0))
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lastBlock = _numCompItems - 1;
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int32 blocksFinalSize = DIMUSE_BUN_CHUNK_SIZE * (1 + lastBlock - firstBlock);
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*comp_final = (byte *)malloc(blocksFinalSize);
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assert(*comp_final);
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finalSize = 0;
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skip = (_curDecompressedFilePos + headerSize) % DIMUSE_BUN_CHUNK_SIZE; // Excess length after the last block
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for (i = firstBlock; i <= lastBlock; i++) {
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if (_lastBlock != i) {
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// CMI hack: one more zero byte at the end of input buffer
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_compInputBuff[_compTable[i].size] = 0;
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_file->seek(_bundleTable[found->index].offset + _compTable[i].offset, SEEK_SET);
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_file->read(_compInputBuff, _compTable[i].size);
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_outputSize = BundleCodecs::decompressCodec(_compTable[i].codec, _compInputBuff, _compOutputBuff, _compTable[i].size);
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if (_outputSize > DIMUSE_BUN_CHUNK_SIZE) {
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error("_outputSize: %d", _outputSize);
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}
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_lastBlock = i;
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}
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outputSize = _outputSize;
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if (header_outside) {
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outputSize -= skip;
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} else {
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if ((headerSize != 0) && (skip >= headerSize))
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outputSize -= skip;
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}
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if ((outputSize + skip) > DIMUSE_BUN_CHUNK_SIZE) // workaround
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outputSize -= (outputSize + skip) - DIMUSE_BUN_CHUNK_SIZE;
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if (outputSize > size)
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outputSize = size;
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assert(finalSize + outputSize <= blocksFinalSize);
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memcpy(*comp_final + finalSize, _compOutputBuff + skip, outputSize);
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finalSize += outputSize;
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size -= outputSize;
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assert(size >= 0);
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if (size == 0)
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break;
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skip = 0;
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}
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_curDecompressedFilePos += finalSize;
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return finalSize;
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}
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debug(2, "BundleMgr::readFile() Failed finding sound %s", name);
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return final_size;
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}
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bool BundleMgr::isExtCompBun(byte gameId) {
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bool isExtComp = false;
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if (gameId == GID_CMI) {
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bool isExtComp1 = false, isExtComp2 = false, isExtComp3 = false, isExtComp4 = false;
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this->open("voxdisk1.bun", isExtComp1); this->close();
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this->open("voxdisk2.bun", isExtComp2); this->close();
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this->open("musdisk1.bun", isExtComp3); this->close();
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this->open("musdisk2.bun", isExtComp4); this->close();
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isExtComp = isExtComp1 | isExtComp2 | isExtComp3 | isExtComp4;
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} else {
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bool isExtComp1 = false, isExtComp2 = false;
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this->open("digvoice.bun", isExtComp1); this->close();
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this->open("digmusic.bun", isExtComp2); this->close();
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isExtComp = isExtComp1 | isExtComp2;
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}
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return isExtComp;
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}
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} // End of namespace Scumm
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