2. Basics

 Terminology 

 Meaning 

 Branch stream 

 Equivalent to a file on a CD. The branch playback library reads the stream based on the scenario information set for the branch 
 stream. 
 By performing channel interleaving (generally, interleaving by sub-headers) in the branched stream, different types of 
 stream data (audio, video, etc.) can be extracted. 

 Branch stream identifier 

 Identifier for distinguishing / specifying branch streams. 
 Set / get the file to read, stream key, and 
 branch destination information for this identifier. 

 Branch number 

 Number to specify the branch destination. 
 Corresponds to the type of event entered from the pad. 

Table 2.2 List of abbreviations

abbreviation	meaning	Description
BPL	branch play	Branch playback
bstm	branch stream	Branch stream
bstmid	branch stream ID	branch stream identifier
brno	branch No.	branch number
bstmmax	branch stream max	Total
brmax	branch max	Total number of branches

Other terms conform to CD communication interface, file system, and stream system.

 Function name, variable name: BP ~ and bp ~
Model name: BP ~
Macro name: BP ~ 

Table 2.3 Symbol names of each library

Library name	Symbol used
Stream system	ST ~, st ~, St ~
File system	GF ~, gf ~, Gf ~
CD communication interface	CD ~, cd ~, Cd ~

Application programs must not use these symbols.