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#include <dolphin/gd.h>
#include <dolphin/os.h>
#define ROUND(n, a) (((u32)(n) + (a)-1) & ~((a)-1))
s32 GDReadDLFile(const char* fName, u32* numDLs, u32* numPLs, GDGList** DLDescArray, GDGList** PLDescArray) {
DVDFileInfo finfo;
u32 length;
u32 i;
u8* buf;
GDFileHeader* hdr;
*numDLs = *numPLs = 0;
*DLDescArray = *PLDescArray = NULL;
if (!DVDOpen(fName, &finfo)) {
OSReport("Can't open file %s\n", fName);
return -3;
}
length = finfo.length;
if (NULL == (buf = OSAlloc(ROUND(length, 0x20)))) {
OSReport("Alloc failed\n");
DVDClose(&finfo);
return -5;
}
if (DVDReadPrio(&finfo, buf, ROUND(length, 0x20), 0, 2) != ROUND(length, 0x20)) {
OSReport("Error occurred when reading %s\n", fName);
DVDClose(&finfo);
OSFree(buf);
return -2;
}
DVDClose(&finfo);
hdr = (GDFileHeader*)buf;
if (hdr->versionNumber != GD_FILE_VERSION_NUMBER) {
OSReport("Bad version number for GDL file %s\n", fName);
OSFree(buf);
return -4;
}
*numDLs = hdr->numDLs;
*numPLs = hdr->numPLs;
// Loaded pointers are relative to disc start, remap
// them to be relative to RAM start
*DLDescArray = (GDGList*)((u32)hdr->DLDescArray + (u32)hdr);
*PLDescArray = (GDGList*)((u32)hdr->PLDescArray + (u32)hdr);
// And internal pointers too
for (i = 0; i < *numDLs; ++i) {
(*DLDescArray)[i].ptr = (void*)((u32)hdr + (u32)(*DLDescArray)[i].ptr);
}
for (i = 0; i < *numPLs; ++i) {
(*PLDescArray)[i].ptr = (void*)((u32)hdr + (u32)(*PLDescArray)[i].ptr);
}
return 0;
}
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