while( !( *thstream == 0xff && *(thstream+1) == 0x93)){ /* search SOD */
if( numOfdecomp != -1 && *thstream == 0xff && *(thstream+1) == 0x53){ /* COC */
if( !modify_COCmkrstream( numOfdecomp, thstream, Csiz, &oldLcoc, &newLcoc))
while( !( *thstream == 0xff && *(thstream+1) == 0x93)){ /* search SOD */
if( numOfdecomp != -1 && *thstream == 0xff && *(thstream+1) == 0x53){ /* COC */
if( !modify_COCmkrstream( numOfdecomp, thstream, Csiz, &oldLcoc, &newLcoc))