[M4IF Technotes] escape codeword header

[Peter Haighton]

Hello Chien-Hsin,
You are mostly correct.  You use the VLC encoded after the escape code and
then use the following formulas.
For type 1: LEVEL= sign(LEVEL) x [ abs( LEVEL) + LMAX ]
For type 2: RUN= RUN + RMAX + 1
Peter
--
Peter Haighton
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-----Original Message-----
From: technotes-admin   lists.m4if.org
[mailto:technotes-admin   lists.m4if.org]On Behalf Of Chien-Hsin Lin
Sent: Friday, August 17, 2023 1:58 PM
To: technotes   lists.m4if.org; chlin   apple.com
Subject: [M4IF Technotes] escape codeword header
Hi!
I have some question regarding the escape type 1 and type 2
It seems to me for type 1 ESC where ESC + "0" is the header part and
codeword is encoded by Table B-16 and B-17 table with adjustment for
LEVEL-LEVEL_MAX(from L MAX table).
And type is ESC+"10" followed by new run which is RUN-RUN_MAX from R MAX
table.
The formats are
1. Type 1: ESC (0000_011) + "0" + new codeword based on (L-L_MAX)
2. Type 2: ESC (0000_011) +"10" + new codeword based on (R-R_MAX)
I would like to know if that is correct or did I miss something else?
Thanks
Chien-Hsin Lin
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