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/* ScummVM - Scumm Interpreter
* Copyright (C) 2003 The ScummVM project
*
* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* $Header$
*
*/
#include "stdafx.h"
#include "scummsys.h"
#include <stdio.h>
#include <stdlib.h>
#include "memman.h"
#include "resman.h"
#include "sworddefs.h"
#include "base/engine.h"
#include "common/util.h"
#include "swordres.h"
#define MAX_PATH_LEN 260
ResMan::ResMan(const char *resFile, MemMan *pMemoMan) {
_memMan = pMemoMan;
loadCluDescript(resFile);
}
ResMan::~ResMan(void) {
freeCluDescript();
}
void ResMan::loadCluDescript(const char *fileName) {
File resFile;
resFile.open(fileName);
if (!resFile.isOpen())
error("ResMan::loadCluDescript(): File %s not found!", fileName);
_prj.noClu = resFile.readUint32LE();
_prj.clu = new BsClu*[_prj.noClu];
uint32 *cluIndex = (uint32*)malloc(_prj.noClu * 4);
resFile.read(cluIndex, _prj.noClu * 4);
for (uint32 clusCnt = 0; clusCnt < _prj.noClu; clusCnt++)
if (cluIndex[clusCnt]) {
BsClu *cluster = _prj.clu[clusCnt] = new BsClu;
resFile.read(cluster->label, MAX_LABEL_SIZE);
cluster->noGrp = resFile.readUint32LE();
cluster->grp = new BsGrp*[cluster->noGrp];
uint32 *grpIndex = (uint32*)malloc(cluster->noGrp * 4);
resFile.read(grpIndex, cluster->noGrp * 4);
for (uint32 grpCnt = 0; grpCnt < cluster->noGrp; grpCnt++)
if (grpIndex[grpCnt]) {
BsGrp *group = cluster->grp[grpCnt] = new BsGrp;
group->noRes = resFile.readUint32LE();
group->resHandle = new BsMemHandle[group->noRes];
group->offset = new uint32[group->noRes];
group->length = new uint32[group->noRes];
uint32 *resIdIdx = (uint32*)malloc(group->noRes * 4);
resFile.read(resIdIdx, group->noRes * 4);
for (uint32 resCnt = 0; resCnt < group->noRes; resCnt++) {
if (resIdIdx[resCnt]) {
group->offset[resCnt] = resFile.readUint32LE();
group->length[resCnt] = resFile.readUint32LE();
_memMan->initHandle(group->resHandle + resCnt);
} else {
group->offset[resCnt] = 0xFFFFFFFF;
group->length[resCnt] = 0;
_memMan->initHandle(group->resHandle + resCnt);
}
}
free(resIdIdx);
} else
cluster->grp[grpCnt] = NULL;
free(grpIndex);
} else
_prj.clu[clusCnt] = NULL;
free(cluIndex);
}
void ResMan::freeCluDescript(void) {
for (uint32 clusCnt = 0; clusCnt < _prj.noClu; clusCnt++)
if (BsClu *cluster = _prj.clu[clusCnt]) {
for (uint32 grpCnt = 0; grpCnt < cluster->noGrp; grpCnt++)
if (BsGrp *group = cluster->grp[grpCnt]) {
_memMan->freeNow(group->resHandle);
delete[] group->resHandle;
delete[] group->offset;
delete[] group->length;
delete group;
}
delete[] cluster->grp;
delete cluster;
}
delete[] _prj.clu;
}
void *ResMan::fetchRes(uint32 id) {
BsMemHandle *memHandle = resHandle(id);
if (!memHandle->data)
error("fetchRes:: resource %d is not open!", id);
return memHandle->data;
}
void *ResMan::openFetchRes(uint32 id) {
resOpen(id);
return fetchRes(id);
}
void ResMan::dumpRes(uint32 id) {
char outn[30];
sprintf(outn, "DUMP%08X.BIN", id);
FILE *outf = fopen( outn, "wb");
resOpen(id);
BsMemHandle *memHandle = resHandle(id);
fwrite(memHandle->data, 1, memHandle->size, outf);
fclose(outf);
resClose(id);
}
Header *ResMan::lockScript(uint32 scrID) {
if (!_scriptList[scrID / ITM_PER_SEC])
error("Script id %d not found.\n", scrID);
scrID = _scriptList[scrID / ITM_PER_SEC];
#ifdef SCUMM_BIG_ENDIAN
BsMemHandle *memHandle = resHandle(scrID);
if (memHandle->cond == MEM_FREED)
openScriptResourceBigEndian(scrID);
else
resOpen(scrID);
#else
resOpen(scrID);
#endif
return (Header*)resHandle(scrID)->data;
}
void ResMan::unlockScript(uint32 scrID) {
resClose(_scriptList[scrID / ITM_PER_SEC]);
}
void *ResMan::cptResOpen(uint32 id) {
#ifdef SCUMM_BIG_ENDIAN
BsMemHandle *memHandle = resHandle(id);
if (memHandle->cond == MEM_FREED)
openCptResourceBigEndian(id);
else
resOpen(id);
#else
resOpen(id);
#endif
return resHandle(id)->data;
}
void ResMan::resOpen(uint32 id) { // load resource ID into memory
BsMemHandle *memHandle = resHandle(id);
if (memHandle->cond == MEM_FREED) { // memory has been freed
uint32 size = resLength(id);
_memMan->alloc(memHandle, size);
// uint8 *dest = (uint8*)memHandle->data;
File *clusFile = openClusterFile(id);
clusFile->seek( resOffset(id) );
clusFile->read( memHandle->data, size);
if (clusFile->ioFailed())
error("Can't read %d bytes from cluster %d\n", size, id);
// original loop was a lot more complicated, more error handling and
// some calls to the music system, don't think we'll need that.
clusFile->close();
delete clusFile;
} else
_memMan->setCondition(memHandle, MEM_DONT_FREE);
memHandle->refCount++;
if (memHandle->refCount > 20) {
debug(1, "%d references to id %d. Guess there's something wrong.", memHandle->refCount, id);
}
}
void ResMan::resClose(uint32 id) {
BsMemHandle *handle = resHandle(id);
if (!handle->refCount) {
warning("Resource Manager fail: unlocking object with refCount 0. Id: %d\n", id);
} else
handle->refCount--;
if (!handle->refCount)
_memMan->setCondition( handle, MEM_CAN_FREE);
}
FrameHeader *ResMan::fetchFrame(void *resourceData, uint32 frameNo) {
uint8 *frameFile = (uint8*)resourceData;
uint8 *idxData = frameFile + sizeof(Header);
if (frameNo >= READ_LE_UINT32(idxData))
error("fetchFrame:: frame %d doesn't exist in resource.", frameNo);
frameFile += READ_LE_UINT32(idxData + (frameNo+1) * 4);
return (FrameHeader*)frameFile;
}
File *ResMan::openClusterFile(uint32 id) {
File *clusFile = new File();;
char fullPath[MAX_PATH_LEN];
char fileName[15];
makePathToCluster(fullPath);
sprintf(fileName, "%s.CLU", _prj.clu[(id >> 24)-1]->label);
clusFile->open(fileName);
if (!clusFile->isOpen())
error("Can't open cluster file %s in directory: %s\n", fileName, fullPath);
return clusFile;
}
BsMemHandle *ResMan::resHandle(uint32 id) {
uint8 cluster = (uint8)((id >> 24) - 1);
uint8 group = (uint8)(id >> 16);
return &(_prj.clu[cluster]->grp[group]->resHandle[id & 0xFFFF]);
}
uint32 ResMan::resLength(uint32 id) {
uint8 cluster = (uint8)((id >> 24) - 1);
uint8 group = (uint8)(id >> 16);
return _prj.clu[cluster]->grp[group]->length[id & 0xFFFF];
}
uint32 ResMan::resOffset(uint32 id) {
uint8 cluster = (uint8)((id >> 24) - 1);
uint8 group = (uint8)(id >> 16);
return _prj.clu[cluster]->grp[group]->offset[id & 0xFFFF];
}
void ResMan::makePathToCluster(char *str) {
*str = '\0';
// todo: add search stuff, cd1, cd2, etc.
}
void ResMan::openCptResourceBigEndian(uint32 id) {
resOpen(id);
BsMemHandle *handle = resHandle(id);
uint32 totSize = handle->size;
uint8 *data = ((uint8*)handle->data) + sizeof(Header);
totSize -= sizeof(Header);
uint32 numCpts = *(uint32*)data = READ_LE_UINT32(data);
data += 4;
uint32 *dataIdx = (uint32*)data;
for (uint32 cnt = 0; cnt < numCpts; cnt++) {
uint32 cptSize;
//uint32 cptPos = READ_LE_UINT32(data + cnt * 4);
uint32 cptPos = dataIdx[cnt] = READ_LE_UINT32(dataIdx + cnt);
if (cnt == numCpts-1)
cptSize = totSize - cptPos - 4;
else
cptSize = READ_LE_UINT32(data + (cnt + 1) * 4) - cptPos;
if (cptSize & 3)
error("Odd compact size during endian conversion. Resource ID = %d, Cpt = %d of %d, Size %d\n", id, cnt, numCpts, cptSize);
cptSize >>= 2;
uint32 *cptData = (uint32*)(data + cptPos);
for (uint32 elemCnt = 0; elemCnt < cptSize; elemCnt++)
cptData[elemCnt] = READ_LE_UINT32(cptData + elemCnt);
}
}
void ResMan::openScriptResourceBigEndian(uint32 id) {
resOpen(id);
BsMemHandle *handle = resHandle(id);
// uint32 totSize = handle->size;
Header *head = (Header*)handle->data;
head->comp_length = FROM_LE_32(head->comp_length);
head->decomp_length = FROM_LE_32(head->decomp_length);
head->version = FROM_LE_16(head->version);
uint32 *data = (uint32*)((uint8*)handle->data + sizeof(Header));
uint32 size = handle->size - sizeof(Header);
if (size & 3)
error("Odd size during script endian conversion. Resource ID =%d, size = %d", id, size);
size >>= 2;
for (uint32 cnt = 0; cnt < size; cnt++) {
*data = READ_LE_UINT32(data);
data++;
}
}
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