size_t VirtualDiscFileSystem::ReadFile(u32 handle, u8 *pointer, s64 size) {
EntryMap::iterator iter = entries.find(handle);
if (iter != entries.end())
{
// it's the whole iso... it could reference any of the files on the disc.
// For now let's just open and close the files on demand. Can certainly be done
// better though
if (iter->second.type == VFILETYPE_ISO)
{
int fileIndex = getFileListIndex(iter->second.curOffset,size*2048,true);
if (fileIndex == -1)
{
ERROR_LOG(FILESYS,"VirtualDiscFileSystem: Reading from unknown address in %08x at %08llx", handle, iter->second.curOffset);
return 0;
}
OpenFileEntry temp;
if (fileList[fileIndex].handler != NULL) {
temp.handler = fileList[fileIndex].handler;
}
bool success = temp.Open(basePath, fileList[fileIndex].fileName, FILEACCESS_READ);
if (!success)
{
ERROR_LOG(FILESYS,"VirtualDiscFileSystem: Error opening file %s", fileList[fileIndex].fileName.c_str());
return 0;
}
u32 startOffset = (iter->second.curOffset-fileList[fileIndex].firstBlock)*2048;
size_t bytesRead;
temp.Seek(startOffset, FILEMOVE_BEGIN);
u32 remainingSize = fileList[fileIndex].totalSize-startOffset;
if (remainingSize < size * 2048)
{
// the file doesn't fill the whole last sector
// read what's there and zero fill the rest like on a real disc
bytesRead = temp.Read(pointer, remainingSize);
memset(&pointer[bytesRead], 0, size * 2048 - bytesRead);
} else {
bytesRead = temp.Read(pointer, size * 2048);
}
temp.Close();
iter->second.curOffset += size;
return size;
}
size_t bytesRead = iter->second.Read(pointer, size);
iter->second.curOffset += bytesRead;
return bytesRead;
} else {
//This shouldn't happen...
ERROR_LOG(FILESYS,"VirtualDiscFileSystem: Cannot read file that hasn't been opened: %08x", handle);
return 0;
}
}
void VirtualDiscFileSystem::DoState(PointerWrap &p)
{
auto s = p.Section("VirtualDiscFileSystem", 1);
if (!s)
return;
int fileListSize = (int)fileList.size();
int entryCount = (int)entries.size();
p.Do(fileListSize);
p.Do(entryCount);
p.Do(currentBlockIndex);
FileListEntry dummy = {""};
fileList.resize(fileListSize, dummy);
for (int i = 0; i < fileListSize; i++)
{
p.Do(fileList[i].fileName);
p.Do(fileList[i].firstBlock);
p.Do(fileList[i].totalSize);
}
if (p.mode == p.MODE_READ)
{
entries.clear();
for (int i = 0; i < entryCount; i++)
{
u32 fd = 0;
OpenFileEntry of;
p.Do(fd);
p.Do(of.fileIndex);
p.Do(of.type);
p.Do(of.curOffset);
p.Do(of.startOffset);
p.Do(of.size);
// open file
if (of.type != VFILETYPE_ISO) {
if (fileList[of.fileIndex].handler != NULL) {
of.handler = fileList[of.fileIndex].handler;
}
bool success = of.Open(basePath, fileList[of.fileIndex].fileName, FILEACCESS_READ);
if (!success) {
ERROR_LOG(FILESYS, "Failed to create file handle for %s.", fileList[of.fileIndex].fileName.c_str());
} else {
if (of.type == VFILETYPE_LBN) {
of.Seek(of.curOffset + of.startOffset, FILEMOVE_BEGIN);
} else {
of.Seek(of.curOffset, FILEMOVE_BEGIN);
}
}
}
entries[fd] = of;
}
} else {
for (EntryMap::iterator it = entries.begin(), end = entries.end(); it != end; ++it)
{
OpenFileEntry &of = it->second;
p.Do(it->first);
p.Do(of.fileIndex);
p.Do(of.type);
p.Do(of.curOffset);
p.Do(of.startOffset);
p.Do(of.size);
}
}
// We don't savestate handlers (loaded on fs load), but if they change, it may not load properly.
}
u32 VirtualDiscFileSystem::OpenFile(std::string filename, FileAccess access, const char *devicename)
{
OpenFileEntry entry;
entry.curOffset = 0;
entry.size = 0;
entry.startOffset = 0;
if (filename == "")
{
entry.type = VFILETYPE_ISO;
entry.fileIndex = -1;
u32 newHandle = hAlloc->GetNewHandle();
entries[newHandle] = entry;
return newHandle;
}
if (filename.compare(0,8,"/sce_lbn") == 0)
{
u32 sectorStart = 0xFFFFFFFF, readSize = 0xFFFFFFFF;
parseLBN(filename, §orStart, &readSize);
entry.type = VFILETYPE_LBN;
entry.size = readSize;
int fileIndex = getFileListIndex(sectorStart,readSize);
if (fileIndex == -1)
{
ERROR_LOG(FILESYS, "VirtualDiscFileSystem: sce_lbn used without calling fileinfo.");
return 0;
}
entry.fileIndex = (u32)fileIndex;
entry.startOffset = (sectorStart-fileList[entry.fileIndex].firstBlock)*2048;
// now we just need an actual file handle
if (fileList[entry.fileIndex].handler != NULL) {
entry.handler = fileList[entry.fileIndex].handler;
}
bool success = entry.Open(basePath, fileList[entry.fileIndex].fileName, FILEACCESS_READ);
if (!success) {
#ifdef _WIN32
ERROR_LOG(FILESYS, "VirtualDiscFileSystem::OpenFile: FAILED, %i", GetLastError());
#else
ERROR_LOG(FILESYS, "VirtualDiscFileSystem::OpenFile: FAILED");
#endif
return 0;
}
// seek to start
entry.Seek(entry.startOffset, FILEMOVE_BEGIN);
u32 newHandle = hAlloc->GetNewHandle();
entries[newHandle] = entry;
return newHandle;
}
entry.type = VFILETYPE_NORMAL;
entry.fileIndex = getFileListIndex(filename);
if (entry.fileIndex != (u32)-1 && fileList[entry.fileIndex].handler != NULL) {
entry.handler = fileList[entry.fileIndex].handler;
}
bool success = entry.Open(basePath, filename, access);
if (!success) {
#ifdef _WIN32
ERROR_LOG(FILESYS, "VirtualDiscFileSystem::OpenFile: FAILED, %i - access = %i", GetLastError(), (int)access);
#else
ERROR_LOG(FILESYS, "VirtualDiscFileSystem::OpenFile: FAILED, access = %i", (int)access);
#endif
//wwwwaaaaahh!!
return 0;
} else {
u32 newHandle = hAlloc->GetNewHandle();
entries[newHandle] = entry;
return newHandle;
}
}
size_t VirtualDiscFileSystem::ReadFile(u32 handle, u8 *pointer, s64 size, int &usec) {
EntryMap::iterator iter = entries.find(handle);
if (iter != entries.end()) {
if (size < 0) {
ERROR_LOG_REPORT(FILESYS, "Invalid read for %lld bytes from virtual umd", size);
return 0;
}
// it's the whole iso... it could reference any of the files on the disc.
// For now let's just open and close the files on demand. Can certainly be done
// better though
if (iter->second.type == VFILETYPE_ISO)
{
int fileIndex = getFileListIndex(iter->second.curOffset,size*2048,true);
if (fileIndex == -1)
{
ERROR_LOG(FILESYS,"VirtualDiscFileSystem: Reading from unknown address in %08x at %08llx", handle, iter->second.curOffset);
return 0;
}
OpenFileEntry temp;
if (fileList[fileIndex].handler != NULL) {
temp.handler = fileList[fileIndex].handler;
}
bool success = temp.Open(basePath, fileList[fileIndex].fileName, FILEACCESS_READ);
if (!success)
{
ERROR_LOG(FILESYS,"VirtualDiscFileSystem: Error opening file %s", fileList[fileIndex].fileName.c_str());
return 0;
}
u32 startOffset = (iter->second.curOffset-fileList[fileIndex].firstBlock)*2048;
size_t bytesRead;
temp.Seek(startOffset, FILEMOVE_BEGIN);
u32 remainingSize = fileList[fileIndex].totalSize-startOffset;
if (remainingSize < size * 2048)
{
// the file doesn't fill the whole last sector
// read what's there and zero fill the rest like on a real disc
bytesRead = temp.Read(pointer, remainingSize);
memset(&pointer[bytesRead], 0, size * 2048 - bytesRead);
} else {
bytesRead = temp.Read(pointer, size * 2048);
}
temp.Close();
iter->second.curOffset += size;
// TODO: This probably isn't enough...
if (abs((int)lastReadBlock_ - (int)iter->second.curOffset) > 100) {
// This is an estimate, sometimes it takes 1+ seconds, but it definitely takes time.
usec = 100000;
}
lastReadBlock_ = iter->second.curOffset;
return size;
}
if (iter->second.type == VFILETYPE_LBN && iter->second.curOffset + size > iter->second.size) {
// Clamp to the remaining size, but read what we can.
const s64 newSize = iter->second.size - iter->second.curOffset;
WARN_LOG(FILESYS, "VirtualDiscFileSystem: Reading beyond end of file, clamping size %lld to %lld", size, newSize);
size = newSize;
}
size_t bytesRead = iter->second.Read(pointer, size);
iter->second.curOffset += bytesRead;
return bytesRead;
} else {
//This shouldn't happen...
ERROR_LOG(FILESYS,"VirtualDiscFileSystem: Cannot read file that hasn't been opened: %08x", handle);
return 0;
}
}
