InputStream *New_InputStream2( tsiMemObject *mem, InputStream *in, tt_uint32 offset, tt_uint32 length, int *errCode )
{
InputStream *t;
if ( errCode == NULL || (*errCode = setjmp( mem->env)) == 0 ) {
/* try */
t = (InputStream*) tsi_AllocMem( mem, sizeof( InputStream ) );
t->mem = mem;
t->privateBase = in->privateBase;
#ifdef ENABLE_NON_RAM_STREAM
t->ReadToRamFunc = in->ReadToRamFunc;
t->nonRamID = in->nonRamID;
t->cacheCount = 0;
t->cachePosition = 0;
#endif
t->pos = offset;
t->posZero = offset;
t->maxPos = offset + length;
t->bitBufferIn = 0;
t->bitCountIn = 0;
t->constructorType = 2;
#ifdef USE_PRE_CACHING
PreLoadT2KInputStream( t, length );
#endif
} else {
/* catch */
t = NULL;
tsi_EmergencyShutDown( mem );
}
return t; /*****/
}
int PrimeT2KInputStream(InputStream *t )
{
tt_int32 n = t->maxPos - t->pos;
if ( n > 8 ) n = 8;
if ( t->bytesLeftToPreLoad > n ) n = t->bytesLeftToPreLoad;
PreLoadT2KInputStream( t, n );
return 0; /*****/
}
int PrimeT2KInputStream(InputStream *t )
{
long n = (long)(t->maxPos - t->pos);
if ( n > 8 ) n = 8;
if ( t->bytesLeftToPreLoad > n ) n = t->bytesLeftToPreLoad;
if (n > (long)(t->maxPos - t->pos) )
n = (long)(t->maxPos - t->pos);
PreLoadT2KInputStream( t, n );
return 0; /*****/
}
