Intel 05-1832-002 User Manual

336

record voice data from a single channel

!

!

!

! Description

The dx_rec( ) function records voice data from a single channel. The data may be recorded to a 
combination of data files, memory, or custom devices. The order in which voice data is recorded is 
specified in the 

 structure. 

After dx_rec( ) is called, recording continues until 

 is called, until the data 

requirements specified in the DX_IOTT are fulfilled, or until one of the conditions for termination 
in the 

 is satisfied. When dx_rec( ) terminates, the current channel’s status information, 

including the reason for termination, can be accessed using extended attribute functions. Use the 

 function to determine the reason for termination.

For a single file synchronous record, dx_recf( ) is more convenient because you do not have to set 
up a DX_IOTT structure. See the function description of 

 for information.

int dx_rec(chdev, iottp, tptp, mode)

int chdev

valid channel device handle

DX_IOTT *iottp

pointer to I/O Transfer Table structure

DV_TPT *tptp

pointer to Termination Parameter Table structure

unsigned short mode

asynchronous/synchronous setting and recording mode bit mask 

0 if successful
-1 if failure

srllib.h
dxxxlib.h

I/O

asynchronous or synchronous

DM3, Springware 

chdev 

specifies the valid channel device handle obtained when the channel was 
opened using 

iottp 

points to the I/O Transfer Table Structure, DX_IOTT, which specifies the order 
of recording and the location of voice data. This structure must remain in 
scope for the duration of the function if using asynchronously. See 

on page 509, for more information on this data structure.