Updated SAO cookbook about indice, pre-gap, post-gap
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@ -282,11 +282,19 @@ ADR is 01h for entries which define time points. It is 02h for media catalog
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entries and it is 03h for track ISRC entries.
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The bits of CTL and ADR are combined in the CTL|ADR byte.
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TNO is the track number (1 to 99).
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TNO is the track number. The TNO of the first track may be chosen in the range
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of 1 to 99. The TNO of following tracks must be the TNO of their predecessor
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plus 1. The last track must not have a TNO larger than 99.
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INDEX is a subaddress within tracks. This recipe uses only INDEX 01h within
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tracks.
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INDEX is a subaddress within tracks. INDEX 1 is mandatory and marks the start
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of the payload area of a track. The range between INDEX 0 and 1 is called
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pre-gap. It should contain zeros if it exists. Further cue sheet entries with
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consecutive INDEX numbers mark ranges within the track. The range of the last
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index may contain a post-gap with zeros.
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(mmc5r03c.pdf 4.2.3.5.2)
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A pre-gap of 2 seconds is mandatory only for the first track. Pre-gap and
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post-gap may be needed with further tracks if they have neighbors with
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different DATA FORM values. (Such mixing is not yet supported by libburn.)
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DATA FORM is 00h for audio payload, 01h for audio pause, 10h for data,
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41h for CD-TEXT in Lead-in.
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@ -300,7 +308,7 @@ LBA = frames - 150, 75 frames = 1 sec , 60 sec = 1 min.
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This address must increase from entry to entry (or at least stay equal).
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The first two entries in a Cue Sheet describe the Media Catalog Number,
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The first two entries in a Cue Sheet may describe the Media Catalog Number,
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a string of 13 characters, also known with CD-TEXT as "UPC/EAN".
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(02h, catalog characters 1 to 7)
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(02h, catalog characters 8 to 13, 00h)
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@ -322,17 +330,24 @@ characters.
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These entries shall be omitted if no ISRC is given for the track.
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CTL shall be the same as with the track.
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The first information track on disc is preceded by a pause encoding of 2 sec:
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The first information track on disc is preceded by a pause encoding or pre-gap
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of at least 2 seconds:
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(CTL|ADR,01h,00h, DATA FORM ,00h,00h,00h,00h)
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with DATA FORM = 00h for audio and 10h for data. By those 2 seconds the MSF
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address increases to 00h:02h:00h = LBA 0. This entry has to come after ISRC,
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if ISRC is given for the track.
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address increases to 00h:02h:00h = LBA 0. Optional further sectors may occupy
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addresses larger than 0. This entry has to come after ISRC, if ISRC is given
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for the track. INDEX has to be 0.
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Each track is represented by an entry
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Each track is represented by one or more entries, with increasing index number.
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At least the entry for INDEX 1 has to exist:
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(CTL|ADR, TNO ,01h,DATA FORM,00h, MIN , SEC , FRAME)
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TNO gives the track number. MIN, SEC, FRAME give the MSF address which becomes
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the start address of the track. The MSF address is then increased by the size
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of the track (to be used with next track or with lead-out).
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There may be more entries with INDEX 2 to 99. Their MSF address tells the
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sector where their range starts. This range ends at the MSF of the next entry
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in the cue sheet. INDEX information is stored in the sub-channel of the sectors
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but not in the Table-of-Content of the disc.
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A track must at least contain 300 payload blocks: 4 seconds of audio or
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600 KiB of data.
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