mirror of
https://github.com/libretro/scummvm.git
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320 lines
8.6 KiB
C++
320 lines
8.6 KiB
C++
/* ScummVM - Scumm Interpreter
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* Copyright (C) 2001-2005 The ScummVM project
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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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*
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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, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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* $Header$
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*/
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#include "stdafx.h"
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#include "common/scummsys.h"
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#include "scumm/scumm.h"
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#include "scumm/imuse_digi/dimuse_bndmgr.h"
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namespace Scumm {
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BundleDirCache::BundleDirCache() {
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for (int fileId = 0; fileId < ARRAYSIZE(_budleDirCache); fileId++) {
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_budleDirCache[fileId].bundleTable = NULL;
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_budleDirCache[fileId].fileName[0] = 0;
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_budleDirCache[fileId].numFiles = 0;
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_budleDirCache[fileId].compressedBun = false;
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}
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}
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BundleDirCache::~BundleDirCache() {
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for (int fileId = 0; fileId < ARRAYSIZE(_budleDirCache); fileId++) {
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if (_budleDirCache[fileId].bundleTable != NULL)
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free (_budleDirCache[fileId].bundleTable);
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}
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}
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BundleDirCache::AudioTable *BundleDirCache::getTable(const char *filename, int slot) {
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return _budleDirCache[slot].bundleTable;
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}
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int32 BundleDirCache::getNumFiles(const char *filename, int slot) {
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return _budleDirCache[slot].numFiles;
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}
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bool BundleDirCache::isCompressed(int slot) {
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return _budleDirCache[slot].compressedBun;
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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(_budleDirCache); fileId++) {
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if ((_budleDirCache[fileId].bundleTable == NULL) && (freeSlot == -1)) {
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freeSlot = fileId;
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}
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if (scumm_stricmp(filename, _budleDirCache[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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File file;
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if (file.open(filename) == false) {
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warning("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 == 'LB23')
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_budleDirCache[freeSlot].compressedBun = true;
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offset = file.readUint32BE();
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strcpy(_budleDirCache[freeSlot].fileName, filename);
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_budleDirCache[freeSlot].numFiles = file.readUint32BE();
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_budleDirCache[freeSlot].bundleTable = (AudioTable *) malloc(_budleDirCache[freeSlot].numFiles * sizeof(AudioTable));
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file.seek(offset, SEEK_SET);
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for (int32 i = 0; i < _budleDirCache[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 == 'LB23') {
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file.read(_budleDirCache[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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strcpy(_budleDirCache[freeSlot].bundleTable[i].filename, name);
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}
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_budleDirCache[freeSlot].bundleTable[i].offset = file.readUint32BE();
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_budleDirCache[freeSlot].bundleTable[i].size = file.readUint32BE();
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}
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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(BundleDirCache *cache) {
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_cache = cache;
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_bundleTable = NULL;
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_compTable = NULL;
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_numFiles = 0;
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_numCompItems = 0;
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_curSample = -1;
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_fileBundleId = -1;
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_compInput = NULL;
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}
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BundleMgr::~BundleMgr() {
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close();
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}
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File *BundleMgr::getFile(const char *filename, int32 &offset, int32 &size) {
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for (int i = 0; i < _numFiles; i++) {
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if (!scumm_stricmp(filename, _bundleTable[i].filename)) {
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_file.seek(_bundleTable[i].offset, SEEK_SET);
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offset = _bundleTable[i].offset;
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size = _bundleTable[i].size;
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return &_file;
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}
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}
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return NULL;
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}
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bool BundleMgr::open(const char *filename, bool &compressed) {
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if (_file.isOpen())
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return true;
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if (_file.open(filename) == false) {
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warning("BundleMgr::openFile() Can't open bundle file: %s", filename);
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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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compressed = _cache->isCompressed(slot);
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_numFiles = _cache->getNumFiles(filename, slot);
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assert(_numFiles);
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_bundleTable = _cache->getTable(filename, slot);
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assert(_bundleTable);
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_compTableLoaded = false;
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_outputSize = 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 = NULL;
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_numFiles = 0;
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_numCompItems = 0;
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_compTableLoaded = false;
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_lastBlock = -1;
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_outputSize = 0;
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_curSample = -1;
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free(_compTable);
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_compTable = NULL;
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free(_compInput);
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_compInput = NULL;
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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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_numCompItems = _file.readUint32BE();
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assert(_numCompItems > 0);
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_file.seek(8, SEEK_CUR);
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if (tag != MKID_BE('COMP')) {
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warning("BundleMgr::loadCompTable() Compressed sound %d invalid (%s)", index, 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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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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_compInput = (byte *)malloc(maxSize + 1);
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return true;
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}
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int32 BundleMgr::decompressSampleByCurIndex(int32 offset, int32 size, byte **comp_final, int header_size, bool header_outside) {
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return decompressSampleByIndex(_curSample, offset, size, comp_final, header_size, header_outside);
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}
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int32 BundleMgr::decompressSampleByIndex(int32 index, int32 offset, int32 size, byte **comp_final, int header_size, bool header_outside) {
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int32 i, final_size, output_size;
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int skip, first_block, last_block;
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assert(0 <= index && index < _numFiles);
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if (_file.isOpen() == false) {
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warning("BundleMgr::decompressSampleByIndex() File is not open!");
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return 0;
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}
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if (_curSample == -1)
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_curSample = index;
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assert(_curSample == index);
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if (!_compTableLoaded) {
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_compTableLoaded = loadCompTable(index);
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if (!_compTableLoaded)
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return 0;
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}
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first_block = (offset + header_size) / 0x2000;
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last_block = (offset + header_size + size - 1) / 0x2000;
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// Clip last_block by the total number of blocks (= "comp items")
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if ((last_block >= _numCompItems) && (_numCompItems > 0))
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last_block = _numCompItems - 1;
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int32 blocks_final_size = 0x2000 * (1 + last_block - first_block);
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*comp_final = (byte *)malloc(blocks_final_size);
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final_size = 0;
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skip = (offset + header_size) % 0x2000;
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for (i = first_block; i <= last_block; 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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_compInput[_compTable[i].size] = 0;
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_file.seek(_bundleTable[index].offset + _compTable[i].offset, SEEK_SET);
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_file.read(_compInput, _compTable[i].size);
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_outputSize = BundleCodecs::decompressCodec(_compTable[i].codec, _compInput, _compOutput, _compTable[i].size);
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if (_outputSize > 0x2000) {
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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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output_size = _outputSize;
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if (header_outside) {
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output_size -= skip;
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} else {
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if ((header_size != 0) && (skip >= header_size))
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output_size -= skip;
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}
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if ((output_size + skip) > 0x2000) // workaround
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output_size -= (output_size + skip) - 0x2000;
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if (output_size > size)
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output_size = size;
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assert(final_size + output_size <= blocks_final_size);
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memcpy(*comp_final + final_size, _compOutput + skip, output_size);
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final_size += output_size;
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size -= output_size;
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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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return final_size;
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}
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int32 BundleMgr::decompressSampleByName(const char *name, int32 offset, int32 size, byte **comp_final, bool header_outside) {
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int32 final_size = 0, i;
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if (!_file.isOpen()) {
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warning("BundleMgr::decompressSampleByName() File is not open!");
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return 0;
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}
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for (i = 0; i < _numFiles; i++) {
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if (!scumm_stricmp(name, _bundleTable[i].filename)) {
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final_size = decompressSampleByIndex(i, offset, size, comp_final, 0, header_outside);
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return final_size;
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}
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}
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debug(2, "BundleMgr::decompressSampleByName() Failed finding voice %s", name);
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return final_size;
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}
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} // End of namespace Scumm
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