Dialogic 6.2 Manuale Utente

The Bfv API Functions

November 2009

47

An infopkt stream is a file or memory buffer containing concatenated 

individual infopkts. The length of an infopkt stream is limited only 

by the file size conventions specific to an operating system. The 

BfvInfopktOpen function opens file-based infopkt streams, and the 

BfvInfopktOpenMem function opens memory-based infopkt 

streams.

For speech record and play applications, the first infopkt in the 

infopkt stream depends on the type of speech file.

If the speech file is an indexed prompt file (see 

 in this manual, and the BfvPromptPlay function in 

Volume 3 of the Bfv API Reference Manual), an 
INFOPKT_PROMPT_MAP

 infopkt begins the infopkt stream. An 

INFOPKT_SPEECH_PARAMETERS

 infopkt begins each new speech file 

embedded within the infopkt stream.

If the speech file is a simple speech file, one recorded with the 

BfvSpeechRecord function, an INFOPKT_SPEECH_PARAMETERS 

infopkt begins the infopkt stream.

The mkinfopk program, included on the distribution media, builds 

an infopkt stream. It has the following command syntax: 

For more detailed information on mkinfopk, see 

 in this manual.

The decode program, also included on the distribution media, reads a 

specified infopkt stream and lists the individual infopkts within the 

stream. See 

 in this 

volume for more detailed information on how to use this utility.

Figure 2 illustrates how to create an infopkt stream to play either an 

indexed prompt file or a simple speech file. You must create a 

separate infopkt stream for each type.

-o output_fname

Is the name of the output file.

infopkt_type

Indicates the type of infopkt which follows.

arg

Is the argument for the infopkt. Depending on 

the infopkt_type, it is either a filename or a 

dummy value.