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#include "fileload.h"
extern "C" void UncompressBackward(void *bottom);
void *LoadFile(FileHandle *handle, const char *name) {
OSReport("[LoadFile %s]\n", name);
int entryNum = DVDConvertPathToEntrynum(name);
DVDHandle dvdhandle;
if (!DVDFastOpen(entryNum, &dvdhandle)) {
OSReport("Cannot open file %s [%d]\n", name, entryNum);
return 0;
}
handle->length = dvdhandle.length;
handle->filePtr = EGG__Heap__alloc((handle->length+0x1F) & ~0x1F, 0x20, GetArchiveHeap());
int ret = DVDReadPrio(&dvdhandle, handle->filePtr, (handle->length+0x1F) & ~0x1F, 0, 2);
DVDClose(&dvdhandle);
OSReport("[Success %p]\n", handle->filePtr);
return handle->filePtr;
}
void *LoadCompressedFile(FileHandle *handle, const char *name) {
OSReport("[LoadCompressedFile %s]\n", name);
int entryNum = DVDConvertPathToEntrynum(name);
DVDHandle dvdhandle;
if (!DVDFastOpen(entryNum, &dvdhandle)) {
OSReport("Cannot open file %s [%d]\n", name, entryNum);
return 0;
}
u32 infoBlock[0x20 / sizeof(u32)] __attribute__ ((aligned(32)));
DVDReadPrio(&dvdhandle, infoBlock, 0x20, dvdhandle.length - 8, 2);
// Reverse it!
infoBlock[1] = (infoBlock[1] >> 24) | ((infoBlock[1] >> 8) & 0xFF00) | ((infoBlock[1] & 0xFF00) << 8) | ((infoBlock[1] & 0xFF) << 24);
u32 uncompSize = dvdhandle.length + infoBlock[1];
OSReport("[Comp:%d UnComp:%d]\n", dvdhandle.length, uncompSize);
handle->length = uncompSize;
handle->filePtr = EGG__Heap__alloc((uncompSize+0x1F) & ~0x1F, 0x20, GetArchiveHeap());
int ret = DVDReadPrio(&dvdhandle, handle->filePtr, (dvdhandle.length+0x1F) & ~0x1F, 0, 2);
DVDClose(&dvdhandle);
UncompressBackward((void*)((u32)handle->filePtr + dvdhandle.length));
OSReport("[Success %p]\n", handle->filePtr);
return handle->filePtr;
}
bool FreeFile(FileHandle *handle) {
if (!handle) return false;
if (handle->filePtr) {
OSReport("[FreeFile %p]\n", handle->filePtr);
EGG__Heap__free(handle->filePtr, GetArchiveHeap());
}
handle->filePtr = 0;
handle->length = 0;
return true;
}
File::File() {
m_loaded = false;
}
File::~File() {
close();
}
bool File::open(const char *filename) {
if (m_loaded)
close();
void *ret = LoadFile(&m_handle, filename);
if (ret != 0)
m_loaded = true;
return (ret != 0);
}
bool File::openCompressed(const char *filename) {
if (m_loaded)
close();
void *ret = LoadCompressedFile(&m_handle, filename);
if (ret != 0)
m_loaded = true;
return (ret != 0);
}
void File::close() {
if (!m_loaded)
return;
m_loaded = false;
FreeFile(&m_handle);
}
bool File::isOpen() {
return m_loaded;
}
void *File::ptr() {
if (m_loaded)
return m_handle.filePtr;
else
return 0;
}
u32 File::length() {
if (m_loaded)
return m_handle.length;
else
return 0xFFFFFFFF;
}
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