| 1 | #!/usr/bin/python |
| 2 | |
| 3 | """Outputs a long-form cddb discid given a cue file as input""" |
| 4 | |
| 5 | import fileinput |
| 6 | import re |
| 7 | |
| 8 | FRAMES_PER_SECOND = 75 |
| 9 | SAMPLES_PER_SECOND = 44100 |
| 10 | SAMPLES_PER_FRAME = SAMPLES_PER_SECOND // FRAMES_PER_SECOND |
| 11 | |
| 12 | pregap = 0 |
| 13 | currentTrackFrame = 0 |
| 14 | pregapRegex = re.compile(r'PREGAP (?P<min>\d+):(?P<sec>\d\d):(?P<frame>\d\d)') |
| 15 | startTrackRegex = re.compile(r'INDEX 01 (?P<min>\d+):(?P<sec>\d\d):(?P<frame>\d\d)') |
| 16 | leadInRegex = re.compile(r'REM FLAC__lead-in (?P<sample>\d+)') |
| 17 | leadOutRegex = re.compile(r'REM FLAC__lead-out 170 (?P<sample>\d+)') |
| 18 | raw_framelist = list() |
| 19 | |
| 20 | numTracks = 0 |
| 21 | |
| 22 | def cddb_sum(trackseconds): |
| 23 | def digits(number): |
| 24 | tmp = number |
| 25 | while tmp: |
| 26 | yield tmp % 10 |
| 27 | tmp = tmp // 10 |
| 28 | |
| 29 | return sum(digits(trackseconds)) |
| 30 | |
| 31 | for line in fileinput.input(): |
| 32 | pregapMatch = pregapRegex.search(line) |
| 33 | if pregapMatch: |
| 34 | pregap = (int((pregapMatch.group('min')) * 60) + int(pregapMatch.group('sec'))) * FRAMES_PER_SECOND + int(pregapMatch.group('frame')) |
| 35 | continue |
| 36 | |
| 37 | startTrackMatch = startTrackRegex.search(line) |
| 38 | if startTrackMatch: |
| 39 | numTracks += 1 |
| 40 | currentTrackFrame = ((int(startTrackMatch.group('min')) * 60) + int(startTrackMatch.group('sec'))) * FRAMES_PER_SECOND + int(startTrackMatch.group('frame')) |
| 41 | raw_framelist.append(currentTrackFrame) |
| 42 | continue |
| 43 | |
| 44 | leadInMatch = leadInRegex.search(line) |
| 45 | if leadInMatch: |
| 46 | leadInFrame = long(leadInMatch.group('sample')) // SAMPLES_PER_FRAME |
| 47 | continue |
| 48 | |
| 49 | leadOutMatch = leadOutRegex.search(line) |
| 50 | if leadOutMatch: |
| 51 | leadOutFrame_raw = long(leadOutMatch.group('sample')) // SAMPLES_PER_FRAME |
| 52 | continue |
| 53 | |
| 54 | leadOutFrame = leadOutFrame_raw + leadInFrame |
| 55 | |
| 56 | framelist = [i + leadInFrame + pregap for i in raw_framelist] |
| 57 | |
| 58 | secondslist = [i//FRAMES_PER_SECOND for i in framelist] |
| 59 | |
| 60 | n = long(sum(map(cddb_sum, secondslist))) |
| 61 | t = leadOutFrame/FRAMES_PER_SECOND - framelist[0]/FRAMES_PER_SECOND |
| 62 | print "%08x" % (((n % 0xff) << 24) | (t << 8) | numTracks), numTracks, |
| 63 | print " ".join([str(i) for i in framelist]), leadOutFrame/FRAMES_PER_SECOND |