s32 cdvdRequestSector(u32 sector, s32 mode)
{
if (sector >= tracks[0].length)
return -1;
sector &= ~15; //align to 16-sector block
threadRequestInfo.lsn = sector;
threadRequestInfo.mode = mode;
threadRequestPending = false;
if (cdvdCacheFetch(sector, mode, threadRequestInfo.data)) {
return 0;
}
threadRequestPending = true;
ResetEvent(hRequestComplete);
PulseEvent(hNotify);
return 0;
}
s32 cdvdDirectReadSector(s32 first, s32 mode, char *buffer)
{
static char data[16*2352];
if((u32)first>=tracks[0].length)
return -1;
s32 sector = first&(~15); //align to 16-sector block
EnterCriticalSection( &CacheMutex );
if(!cdvdCacheFetch(sector,mode,data))
{
s32 ret = -1;
s32 tries=5;
s32 count = 16;
s32 left = tracks[0].length-sector;
if(left<count) count=left;
do {
if(mode==CDVD_MODE_2048)
ret = src->ReadSectors2048(sector,count,data);
else
ret = src->ReadSectors2352(sector,count,data);
if(ret==0)
break;
tries--;
} while((ret<0)&&(tries>0));
cdvdCacheUpdate(sector,mode,data);
}
LeaveCriticalSection( &CacheMutex );
s32 offset;
if(mode==CDVD_MODE_2048)
{
offset = 2048*(first-sector);
memcpy(buffer,data + offset,2048);
return 0;
}
offset = 2352*(first-sector);
s8* bfr = data + offset;
switch(mode)
{
case CDVD_MODE_2328:
memcpy(buffer,bfr+24,2328);
return 0;
case CDVD_MODE_2340:
memcpy(buffer,bfr+12,2340);
return 0;
default:
memcpy(buffer,bfr+12,2352);
return 0;
}
return 0;
}
