There seems to be a particular case when SSM=8 (Complete 2352 with R-W) where the interleaved subcode may be 4 times 24 or 18 bytes per sector. They are arranged in 4 packs of 24 bytes across each sector (4*24=96).Įach pack is 1 byte of mode item, 1 byte of instruction, 2 bytes of Q parity, 16 bytes of data, 4 bytes of P parity. The subcode in on a separate file on the master.Įach subcode byte is 8 bits PQRSTUVW (or WVUTSRQP depending on the SUB layout). That's why you have 24*98=2352 bytes of usable data per sector.ġ CD of 800MB ~ 340000 sectors, that is ~33.3M frames, which means we can also store ~32.6MB of subcode.
2 are synchronization (not on the master, that is the DDP), 96 are data + subcode.Įach audio frame is made up of 1 byte of subcode, 2*12 bytes of data, 4 bytes of Q parity, 4 bytes of P parity.
Sonoris ddp creator code#
The CD-Text logic implements a part of the SCSI MMC-3 spec (see ) is also inspired by Linux' cdrtools code (but has less bugs) To obtain a license and the specs, just apply to DCA (Doug Carson & Associates, Inc).
This lib aims at being compliant with the DCA spec v1.01, 2.0 and 2.10, but does not support v2.10 as of today () The lib seems to work correctly with CD+G (old-style Karaoke) although it's hard to know since only specific/professional softwares handle subcode correctly even nowadays.įurther work was added in 2013 to try to build a DDP writer + its UI (something similar to Sonoris' DDP Creator for example) but it was never completed due to lack of time. It was never finished/tested with DVDs, and very little with other CD specs (CDi, CD-Text etc). It also enables you to burn and rip audio CDs and send off images with FTP. The DDP Creator lets you assemble professional RedBook compatible audio CDs and supports the import and export of DDP 2.00 images and Cue Sheet (cue) files.
Sonoris ddp creator software#
It was initiated in 2011 as part of the Suntrip Records systems with the goal to extract the label's CD masters perfectly. The Sonoris DDP Creator is a standalone cross-platform CD authoring application compatible with virtually any DAW software on the market. A DDP (Disc Description Protocol) image manipulation libĭDP masters are used in the CD replication industry: