[Mp4-tech] Re:[Video]SCR calculation

[Geetha U]

Hi,
I have a problem in reading SCR value from Mpeg2 stream. I get the pack
start code and then,
 if( (ps->ps_data[4] & 0xC0) == 0x40 )
 {
       /* MPEG-2 */
       ps->scr = ((u64)(ps->ps_data[4] & 0x38) << 27) |
                              ((u64)(ps->ps_data[4] & 0x3) << 28) |
                              ((u64)(ps->ps_data[5] & 0xff) << 20) |
                              ((u64)(ps->ps_data[6] & 0xf8) << 12) |
                              ((u64)(ps->ps_data[6] & 0x3) << 13) |
                              ((u64)(ps->ps_data[7] & 0xff) << 5) |
                              ((u64)(ps->ps_data[8] & 0xf8) >> 3);
}
Is this code correct. I want the value to be of type short.
Will anyone help me in getting SCR value of short type?
Thanks in advance,
Geetha