Intel 05-1832-002 User Manual

299

play recorded voice data

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! Description

The dx_play( ) function plays recorded voice data, which may come from any combination of data 
files, memory, or custom devices. In the case of DM3 boards, voice data may also come from 
already downloaded cached prompts.

For a single file synchronous play, dx_playf( ) is more convenient because you do not have to set 
up a 

 structure. See the 

 function description for more information.

To specify format information about the data to be played, including file format, data encoding, 
sampling rate, and bits per sample, use 

int dx_play(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 playing mode bit mask for this play session

0 if success
-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 playback and the location of voice data. See 

, on page 509, 

for information about the data structure.