Updated documentation of CD-TEXT pack types 0x88 and 0x89

doc/cookbook.txt

@@ -430,7 +430,7 @@ The first byte of each pack tells the pack type (text meaning):
   0x87 = text-and-binary: Genre Identification
   0x88 = binary: Table of Content information
   0x89 = binary: Second Table of Content information
-  (0x8a to 0x8c are reserved. 0x8d is "Reserved for content provider only".)
+  (0x8a to 0x8c are reserved.)
   0x8d = Closed Information
   0x8e = UPC/EAN code of the album and ISRC code of each track
   0x8f = binary: Size Information of the Block
@@ -455,8 +455,9 @@ A text may span over several packs. Unused characters in a pack are used for
 the next text of the same pack type. If no text of the same type follows,
 then the remaining text bytes are set to 0.
 
-The CRC algorithm uses divisor 0x11021 and is known as CRC-16-CCITT.
+The CRC algorithm uses divisor 0x11021. The resulting 16-bit residue of the
-MMC-3 says: "All bits shall be inverted."
+polynomial division gets exored with 0xffff and written as big-endian
+number to bytes 16 and 17 of the pack. 
 
 
 The text packs are grouped in up to 8 blocks of at most 256 packs. Each block
@@ -478,12 +479,9 @@ Pack type 0x86 (Disc Identification) is documented by Sony as "Catalog Number:
 (use ASCII Code) Catalog Number of the album". So it is not really binary
 but might be non-printable.
 
-Type 0x87 seems to contain 2 binary bytes and 10 bytes of 0-terminated
+Type 0x87 contains 2 binary bytes and 10 or 12 bytes of 0-terminated cleartext.
-cleartext.
+The two binary bytes may or may not be repeated at the start of the follow-up
-The two binary bytes may or may not be repeated at the start of each pack.
+packs of type 0x87. They form a big-endian index to the following list.
-They form a big-endian index to the following list (from libcdio source, which
-learned it from cdrecord source, stating "Genre codes from Enhanced CD
-Specification page 21").
   0x0000 = "Not Used"
   0x0001 = "Not Defined"
   0x0002 = "Adult Contemporary"
@@ -512,12 +510,56 @@ Specification page 21").
   0x0019 = "Sound Effects"
   0x001a = "Spoken Word"
   0x001b = "World Music"
-Sony documents the cleatext part as "Genre information that would supplement
+Sony documents the cleartext part as "Genre information that would supplement
 the Genre Code, such as 'USA Rock music in the 60s'".
 
-Unclear yet:   0x88 = Table of Content information
+Pack type 0x88 records information from the CDs Table of Content, as of
+READ PMA/TOC/ATIP Format 0010b (mmc5r03c.pdf, table 490 TOC Track Descriptor
+Format, Q Sub-channel).
+The first pack records in its payload bytes:
+   0 : PMIN of POINT A1 = First Track Number
+   1 : PMIN of POINT A2 = Last Track Number
+   2 : unknown, 0 in Sony example
+   3 : PMIN of POINT A2 = Start position of Lead-Out
+   4 : PSEC of POINT A2 = Start position of Lead-Out
+   5 : PFRAME of POINT A2 = Start position of Lead-Out
+   6 to 11 : unknown, 0 in Sony example
+The following packs record in groups of 3 bytes PMIN, PSEC, PFRAME of the POINT
+of the lowest track number to the POINT of the highest track number (max 63h).
+The payload of the last pack is padded by 0s.
+The Sony .TOC example:
+  A0 01
+  A1 14
+  A2 63:02:18
+  01 00:02:00
+  02 04:11:25
+  03 08:02:50
+  04 11:47:62
+  ...
+  13 53:24:25
+  14 57:03:25
+yields
+  88 00 23 00 01 0e 00 3f 02 12 00 00 00 00 00 00 12 00
+  88 01 24 00 00 02 00 04 0b 19 08 02 32 0b 2f 3e 67 2d
+  ...
+  88 0d 27 00 35 18 19 39 03 19 00 00 00 00 00 00 ea af
 
-Unclear yet:   0x89 = Second Table of Content information 
+Pack type 0x89 is yet quite unclear. Especially what the information shall
+mean to the user of the CD. The time points in the Sony example are in the
+time range of the tracks with the numbers that are given before the time
+points:
+  01 02:41:48 01 02:52:58
+  06 23:14:25 06 23:29:60
+  07 28:30:39 07 28:42:30
+  13 55:13:26 13 55:31:50
+yields
+  89 01 28 00 01 04 00 00 00 00 02 29 30 02 34 3a f3 0c
+  89 06 29 00 02 04 00 00 00 00 17 0e 19 17 1d 3c 73 92
+  89 07 2a 00 03 04 00 00 00 00 1c 1e 27 1c 2a 1e 72 20
+  89 0d 2b 00 04 04 00 00 00 00 37 0d 1a 37 1f 32 0b 62
+The track numbers are stored in the track number byte of the packs. The two
+time points are stored in byte 6 to 11 of the payload. Byte 0 of the payload
+seems to be a sequential counter. Byte 1 always 4 ? Byte 2 to 5 always 0 ?
 
 Type 0x8d is documented by Sony as "Closed Information: (use 8859-1 Code)
 Any information can be recorded on disc as memorandum. Information in this
@@ -530,15 +572,13 @@ Type 0x8f summarizes the whole list of text packs of a block.
 So there is one group of three 0x8f packs per block.
 Nevertheless each 0x8f group tells the highest sequence number and the
 language code of all blocks.
-The payload bytes of three 0x8f packs form a 36 byte record.
+The payload bytes of three 0x8f packs form a 36 byte record. The track number
+bytes of the three packs have the values 0, 1, 2.
     Byte :
        0 : Character code:
            0x00 = ISO-8859-1
            0x01 = 7 bit ASCII
            0x80 = Kanji (japanese)
-           0x81 = Korean
-           0x82 = Mandarin (chinese)
-           0xff = libcdio source states: "everything else"
        1 : Number of first track
        2 : Number of last track
        3 : libcdio source states: "cd-text information copyright byte"
@@ -548,6 +588,7 @@ The payload bytes of three 0x8f packs form a 36 byte record.
            I.e. the first byte in this field of 16 counts packs of type 0x80.
  20 - 27 : Highest sequence byte number of blocks 0 to 7.
  28 - 36 : Language code for blocks 0 to 7 (tech3264.pdf appendix 3)
+           Not all of these Codes have ever been seen with CD-TEXT, though.
            0x00 = Unknown
            0x01 = Albanian
            0x02 = Breton
@@ -650,7 +691,6 @@ The payload bytes of three 0x8f packs form a 36 byte record.
            0x7d = Armenian
            0x7e = Arabic
            0x7f = Amharic
-
 E.g. these three packs
   42 : 8f 00 2a 00 01 01 03 00 06 05 04 05 07 06 01 02 48 65
   43 : 8f 01 2b 00 00 00 00 00 00 00 06 03 2c 00 00 00 c0 20