3.Basics

3.1 Definition of terms and abbreviations

Table 3.1 List of terms

term	meaning
stream	Logically contiguous data separated by subheaders Flow of.
stream key	Key to read stream into CD buffer. flame address range, file number (FN), channel number (CN), It consists of submode (SM) and coding information (CI). Submode (SM) and coding information (CI) are mask patterns A comparison pattern can be specified, ({SM|CI}&mask pattern==comparison pattern) Read the sector.
stream group	A collection of multiple streams.
final stream	The last replayed stream among the streams belonging to the stream group. stream that is generated.
loop start stream	Return after playing the last stream in a stream group destination stream.
Number of loops	After playing the last stream, go to the loop start stream. Number of times to move the pickup.
Transfer start FAD	The data read into the CD buffer is stored in the buffer within the program. The position of the pickup that starts transferring to F, etc.
transfer gate	The data read into the CD buffer is stored in the buffer within the program. Gate for transferring to F, etc. to close this Therefore, store the stream data in the CD buffer. I can.

Figure 3.1 Stream system data flow

┌─────────┐              
│CD drive │              
└────┬────┘              
     │ Load  ──┐         
     ↓         │         
┌─────────┐    │         
│CD buffer│    ├Stream access
└────┬────┘    │         
     │Retrieval│         
     │/Transfer│         
     ↓       ──┘         
┌─────────┐              
│Main CPU │              
│area     │              
└─────────┘              

Table 3.2 List of abbreviations

Abbreviation	meaning	explanation
GFS	general file system	file system
STM	stream	stream
StmGrpHn	stream group handle	Stream group operation handle
StmHn	stream handle	Handle for stream operation
TrMode	transfer mode	Transfer mode
bn	buffer number	buffer partition number
ci	coding information	Coding information
cn	chanel number	channel number
fad	frame address	frame address
fid	file ID	file identifier
fn	file number	file number
fname	file name	file name
frange	fad range	Playback range (frame address range)
loopstm	loop stream	loop start stream
sinfo	sector information	Sector information
sm	sub mode	submode

• Other terms follow the CD communication interface and file system.

• For more information about directories, see the Directory Operations chapter in the File System Library .

3.2 Name restrictions

The stream system library uses the following names for function names, variable names, type names, and macro names.

Function name, variable name	ST~ and st~
Model name	St〜
macro name	ST~

The libraries required to use the stream system library use the following global symbols.

Table 3.3 Symbol names of each library

library name	Symbols used
file system	GF~,gf~,Gf~
CD communication interface	CD~,cd~,Cd~

Application programs must not use these symbols.