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Voice API for Windows Operating Systems Library Reference — November 2003 355
record voice data to a single WAVE file — dx_recwav( )
!
!!
! Cautions
On DM3 boards using a flexible routing configuration, voice channels must be listening to a TDM
bus time slot in order for any voice streaming functions, such as dx_rec( ), to work. In other words,
you must issue a dx_listen( ) function call on the device handle before calling any voice streaming
function for that device handle. Furthermore, the dx_listen( ) function must be called within the
same process as the voice streaming functions. The actual recording operation will start only after
the voice channel is listening to the proper external time slot.
!
!!
! Errors
If this function returns -1 to indicate failure, one of the following reasons will be contained by
ATDV_LASTERR( ):
EDX_BADIOTT
Invalid DX_IOTT setting
EDX_BADWAVFILE
Invalid WAVE file
EDX_BUSY
Channel is busy
EDX_SH_BADCMD
Unsupported command or WAVE file format
EDX_SYSTEM
Error from operating system; use dx_fileerrno( ) to obtain error value
EDX_XPBPARM
Invalid DX_XPB setting
!
!!
! Example
#include <srllib.h>
#include <dxxxlib.h>
main()
{
int chdev; /* channel device handle */
DV_TPT tpt; /* termination parameter table */
DX_XPB xpb; /* I/O transfer parameter block */
.
.
.
/* Open channel */
if ((chdev = dx_open("dxxxB1C1",0)) == -1) {
printf("Cannot open channel\n");
/* Perform system error processing */
exit(1);
}
/* Set to terminate play on 1 digit */
tpt.tp_type = IO_EOT;
tpt.tp_termno = DX_MAXDTMF;
tpt.tp_length = 1;
tpt.tp_flags = TF_MAXDTMF;