You could convert your 128 Bytes to a bit-String using regular expressions to match that.
something like 
# Warning: Untested code ahead!
#          Enter at your own risk!
read($file, $buf, 128);
$bits= unpack("B*",$buf); # or "b*" depending on bit order
do {
  if ($r= read($file, $byte, 1)) {
    $newbits=unpack("B*",$byte); # or "b*" depending on bit order
    $bits.=$newbits;
  }
  print "match!\n" if $bits=~ /^.{0,7}.{9}0{6}.{35}1{51}.{27}/;
  #                             ^     ^   ^   ^    ^    ^
  # possible offset. 0-7 Bit ---/     |   |   |    |    |
  # match exactly 9 bits -------------/   |   |    |    |
  # match Bits 9-14 as 0 -----------------/   |    |    |
  # match 35 Bits to advance to bit 50 -------/    |    |
  # Bits 50-100 (51 Bits) must match 1 ------------/    |
  # to match the last 27 bits of your frame-------------/
  $bits= substr($bits,8);
} while ($r);

[download]
Not very efficient though.

In reply to Re: perl bitology - breaking into bytes by Skeeve
in thread perl bitology - breaking into bytes by spurperl

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