title
Products            Buy            Support Forum            Professional            About            Codec Central
 

FLAC & Ogg Vorbis Storage of CDTOC

Collapse
This is a sticky topic.
X
X
 
  • Time
  • Show
Clear All
new posts
  • Spoon
    Administrator
    • Apr 2002
    • 44089

    FLAC & Ogg Vorbis Storage of CDTOC

    We have been asked over and over again by individuals / companies to offer storage of a CD TOC (table of contents from Audio CD) in Vorbis Comments, as no standard was forthcoming we have acted in creating a new standard:

    Tag Name:

    CDTOC

    Table of contents stored as a string made up from:

    [audio trackcount]+[first audio track address]+[second audio track address]....

    Track addresses are stored (LBA Address + 150), that is 2 seconds in for the first track.

    Special cases:

    CD Extra discs: the lead out address is added to the end, track count is still just for audio tracks.
    [data][audio] discs: as a normal CD, except on the end is +X[LBA of Data Track + 150]

    Example of ordinary Audio CD:

    Code:
    LBA FirstIndex: 1 last Index: 10
    Type: Audio Track 1  LBA Address: 0  Length: 00:04:08.733
    Type: Audio Track 2  LBA Address: 18655  Length: 00:04:34.760
    Type: Audio Track 3  LBA Address: 39262  Length: 00:04:19.573
    Type: Audio Track 4  LBA Address: 58730  Length: 00:04:14.867
    Type: Audio Track 5  LBA Address: 77845  Length: 00:03:27.960
    Type: Audio Track 6  LBA Address: 93442  Length: 00:03:09.867
    Type: Audio Track 7  LBA Address: 107682  Length: 00:04:02.466
    Type: Audio Track 8  LBA Address: 125867  Length: 00:03:44.040
    Type: Audio Track 9  LBA Address: 142670  Length: 00:04:04.334
    Type: Audio Track 10  LBA Address: 160995  Length: 00:04:37.666
    Type: Lead Out  LBA Address: 181820
    
    ID Tag CDTOC=A+96+4975+99F4+E600+130AB+16D98+1A538+1EC41+22DE4+27579+2C6D2
    Example of CD with Hidden First Track:

    Code:
    LBA FirstIndex: 1 last Index: 10
    Type: Audio Track 1 LBA Address: 8925 Length: 00:05:35.266
    Type: Audio Track 2 LBA Address: 34070 Length: 00:04:25.667
    Type: Audio Track 3 LBA Address: 53995 Length: 00:04:37.267
    Type: Audio Track 4 LBA Address: 74790 Length: 00:03:03.800
    Type: Audio Track 5 LBA Address: 88575 Length: 00:04:23.533
    Type: Audio Track 6 LBA Address: 108340 Length: 00:05:59.733
    Type: Audio Track 7 LBA Address: 135320 Length: 00:04:14.627
    Type: Audio Track 8 LBA Address: 154417 Length: 00:04:05.533
    Type: Audio Track 9 LBA Address: 172832 Length: 00:05:15.374
    Type: Audio Track 10 LBA Address: 196485 Length: 00:08:58.200
    Type: Lead Out LBA Address: 236850
    
    ID Tag CDTOC=A+2373+85AC+D381+124BC+15A95+1A7CA+2112E+25BC7+2A3B6+3001B+39DC8
    Special Case 1, Example of CD Extra CD:

    Code:
    LBA FirstIndex: 1 last Index: 14
    Type: Audio Track 1  LBA Address: 0  Length: 00:04:10.413
    Type: Audio Track 2  LBA Address: 18781  Length: 00:03:39.093
    Type: Audio Track 3  LBA Address: 35213  Length: 00:03:11.534
    Type: Audio Track 4  LBA Address: 49578  Length: 00:04:03.426
    Type: Audio Track 5  LBA Address: 67835  Length: 00:03:36.894
    Type: Audio Track 6  LBA Address: 84102  Length: 00:03:59.080
    Type: Audio Track 7  LBA Address: 102033  Length: 00:04:21.773
    Type: Audio Track 8  LBA Address: 121666  Length: 00:03:21.227
    Type: Audio Track 9  LBA Address: 136758  Length: 00:03:56.213
    Type: Audio Track 10  LBA Address: 154474  Length: 00:04:35.240
    Type: Audio Track 11  LBA Address: 175117  Length: 00:04:04.000
    Type: Audio Track 12  LBA Address: 193417  Length: 00:04:09.947
    Type: Audio Track 13  LBA Address: 212163  Length: 00:03:57.160
    Type: Data Track 14  LBA Address: 229950  Length: 00:11:27.480
    Type: Lead Out  LBA Address: 281511
    
    ID Tag CDTOC=D+96+49F3+8A23+C240+10991+1491C+18F27+1DBD8+216CC+25C00+2ACA3+2F41F+33D59+382D4[b]+44C3D[/b]
    
    Notice the +44C3D is the lead out and track count of 13 (even though with last data track there are 14 tracks, so the track starting at 382D4 is a Data track)
    Special Case 2, Example of [data][audio] CD:

    Code:
        LBA FirstIndex: 1 last Index: 12
          Type: Data Track 1  LBA Address: 0  Length: 00:08:11.386
          Type: Audio Track 2  LBA Address: 36854  Length: 00:05:53.000
          Type: Audio Track 3  LBA Address: 63329  Length: 00:04:29.880
          Type: Audio Track 4  LBA Address: 83570  Length: 00:05:33.494
          Type: Audio Track 5  LBA Address: 108582  Length: 00:05:21.653
          Type: Audio Track 6  LBA Address: 132706  Length: 00:06:07.307
          Type: Audio Track 7  LBA Address: 160254  Length: 00:04:41.693
          Type: Audio Track 8  LBA Address: 181381  Length: 00:04:50.733
          Type: Audio Track 9  LBA Address: 203186  Length: 00:06:08.307
          Type: Audio Track 10  LBA Address: 230809  Length: 00:04:41.360
          Type: Audio Track 11  LBA Address: 251911  Length: 00:06:14.667
          Type: Audio Track 12  LBA Address: 280011  Length: 00:05:14.813
          Type: Lead Out  LBA Address: 303622
    
    CDTOC=B+908C+F7F7+14708+1A8BC+206F8+27294+2C51B+31A48+3862F+3D89D+44661+4A29C[b]+X96[/b]
    
    Here the data track is signalled by +X96, which is 96 in Hex (the LBA start address, of 150)
    Incidently this tag is exactly the same as the WM/MCID tag in .wma (as created by Windows Media Player), or the ITOC tag of a Wave LIST tag, EXCEPT for the special cases listed above.
    Last edited by Spoon; April 03, 2008, 04:14 PM.
    Spoon
    www.dbpoweramp.com
  • EliC
    dBpoweramp Guru
    • May 2004
    • 1175

    #2
    Re: FLAC & Ogg Vorbis Storage of CDTOC

    Spoon, thank you for addressing this. I certainly am no expert on this so I will simply repost Skamp's questions:



    Now, I'd like to know how we're supposed to compute FreeDB DiscIDs without a lead-out address? Without first and last track numbers, how are we supposed to compute MusicBrainz DiscIDs? How are we supposed to handle discs with a data track as track 01? Discs with negative LBAs?
    Do we need some more before this is final?

    Comment

    • EliC
      dBpoweramp Guru
      • May 2004
      • 1175

      #3
      Re: FLAC & Ogg Vorbis Storage of CDTOC

      Originally posted by Spoon

      Incidently this tag is exactly the same as the WM/MCID tag in .wma (as created by Windows Media Player), or the ITOC tag of a Wave LIST tag.
      Do we need an extended CD TOC (CDTOC+) to cover these extra issues. So we could have two tag fields, one that is consistent with WMP and one that includes the extra info.

      Comment

      • Spoon
        Administrator
        • Apr 2002
        • 44089

        #4
        Re: FLAC & Ogg Vorbis Storage of CDTOC

        This thread is about FLAC and Ogg CD TOC, existing WMA and Wave tags are not included.
        Spoon
        www.dbpoweramp.com

        Comment

        • EliC
          dBpoweramp Guru
          • May 2004
          • 1175

          #5
          Re: FLAC & Ogg Vorbis Storage of CDTOC

          Originally posted by Spoon
          This thread is about FLAC and Ogg CD TOC, existing WMA and Wave tags are not included.
          I know. My reference to WMP was related the FLAC specs you introduced being consistent with the current MS implementation, which I thought was one of your goals.

          Comment

          • Porcus
            dBpoweramp Guru
            • Feb 2007
            • 792

            #6
            Re: FLAC & Ogg Vorbis Storage of CDTOC

            Are there other bits that could be considered -- like CD-Text, or Pre-Emphasis or HDCD?

            (Pardon my ignorance.)

            Comment

            • Spoon
              Administrator
              • Apr 2002
              • 44089

              #7
              Re: FLAC & Ogg Vorbis Storage of CDTOC

              CD Text is saved in ID Tags, HDCD should be diecoded to 24 bit on ripping, Pre-Emph should also have the de-emph applied on ripping.
              Spoon
              www.dbpoweramp.com

              Comment

              • Porcus
                dBpoweramp Guru
                • Feb 2007
                • 792

                #8
                Re: FLAC & Ogg Vorbis Storage of CDTOC

                Originally posted by Spoon
                Pre-Emph should also have the de-emph applied on ripping.
                E.T.A. in dBpoweramp? ;-)

                Comment

                • Spoon
                  Administrator
                  • Apr 2002
                  • 44089

                  #9
                  Re: FLAC & Ogg Vorbis Storage of CDTOC

                  A while (it has missed R13).
                  Spoon
                  www.dbpoweramp.com

                  Comment

                  • Porcus
                    dBpoweramp Guru
                    • Feb 2007
                    • 792

                    #10
                    Re: FLAC & Ogg Vorbis Storage of CDTOC

                    Bumping an old thread I know, but: This TOC is incomplete as far as index points go. Is that the only information missing compared e.g. to a cuesheet?

                    Comment

                    • Spoon
                      Administrator
                      • Apr 2002
                      • 44089

                      #11
                      Re: FLAC & Ogg Vorbis Storage of CDTOC

                      Index points are not in the TOC, they are subchannel.
                      Spoon
                      www.dbpoweramp.com

                      Comment

                      • EliC
                        dBpoweramp Guru
                        • May 2004
                        • 1175

                        #12
                        Re: FLAC & Ogg Vorbis Storage of CDTOC

                        Originally posted by Spoon
                        Pre-Emph should also have the de-emph applied on ripping.
                        want to echo porcus' question above, will dBpoweramp soon set a flag for this or de-emph at ripping?

                        Comment

                        • Spoon
                          Administrator
                          • Apr 2002
                          • 44089

                          #13
                          Re: FLAC & Ogg Vorbis Storage of CDTOC

                          >will dBpoweramp soon set a flag for this or de-emph at ripping?

                          I will add as a wish request for r14.2
                          Spoon
                          www.dbpoweramp.com

                          Comment

                          • Acuna
                            • Mar 2014
                            • 2

                            #14
                            Re: FLAC & Ogg Vorbis Storage of CDTOC

                            Hello!

                            Can I ask you what program create this data? I want to get the text file with it.

                            I'm using cdrdao read-toc command, but it write looks like this:

                            CD_DA


                            // Track 1
                            TRACK AUDIO
                            NO COPY
                            NO PRE_EMPHASIS
                            TWO_CHANNEL_AUDIO
                            FILE "data.wav" 0 09:24:30


                            // Track 2
                            TRACK AUDIO
                            NO COPY
                            NO PRE_EMPHASIS
                            TWO_CHANNEL_AUDIO
                            FILE "data.wav" 09:24:30 05:42:43
                            It's good, but I want more detailed information, looks like cdrdao's cmd echo text. I tried to write its result in file, but it's empy(

                            Thanks!
                            Last edited by Acuna; March 14, 2014, 06:37 PM.

                            Comment

                            • Spoon
                              Administrator
                              • Apr 2002
                              • 44089

                              #15
                              Re: FLAC & Ogg Vorbis Storage of CDTOC

                              dBpoweramp writes this information.
                              Spoon
                              www.dbpoweramp.com

                              Comment

                              Working...

                              ]]>