dx_getsvmt( )

Description | Cautions | Example | Errors | See Also

Name:	int dx_getsvmt(chdev,tabletype,svmtp )
Inputs:	int chdev	valid Dialogic channel device handle
	unsigned short tabletype	table to retrieve (speed or volume)
	DX_SVMT * svmtp	pointer to DX_SVMT structure
Returns:	0 if success
	-1 if failure
Includes:	srllib.h
	dxxxlib.h
Category:	Speed and Volume

Description

The dx_getsvmt( ) function returns the current Speed or Volume Modification Table to the DX_SVMT structure.

For more information on the Speed and Volume Modification Tables, refer to the DX_SVMT structure in the chapter on Data Structures, and see also the Voice Software Reference: Voice Features Guide.

Parameter	Description
chdev	specifies the valid channel device handle obtained by a call to dx_open( ).
tabletype	specifies whether to retrieve the Speed or the Volume Modification Table.
	SV_SPEEDTBL	Retrieve the Speed Modification Table values
	SV_VOLUMETBL	Retrieve the Volume Modification Table values
svmtp	points to the DX_SVMT structure that contains the Speed/Volume Modification Table entries.

Cautions

None.

Example

#include <stdio.h>  
#include <srllib.h>  
#include <dxxxlib.h>  
#include <windows.h>  
   
/*  
 * Global Variables  
 */  
   
main()  
{  
   DX_SVMT 	svmt;  
   int      dxxxdev, index;  
   
   /*  
    * Open the Voice Channel Device and Enable a Handler  
    */  
   if ( ( dxxxdev = dx_open( "dxxxB1C1", NULL) ) == -1 ) {  
      perror( "dxxxB1C1" );  
      exit( 1 );  
   }  
   
   /*  
    * Get the Current Volume Modification Table  
    */  
   memset( &svmt, 0, sizeof( DX_SVMT ) );  
   if (dx_getsvmt( dxxxdev, SV_VOLUMETBL, &svmt ) == -1 ){  
      printf( "Unable to Get the Current Volume" );  
      printf( " Modification Table\n" );  
      printf( "Lasterror = %d  Err Msg = %s\n",  
         ATDV_LASTERR( dxxxdev ), ATDV_ERRMSGP( dxxxdev ) );  
      dx_close( dxxxdev );  
      exit( 1 );  
   } else {  
      printf( "Volume Modification Table is:\n" );  
      for ( index = 0; index < 10; index++ ) {  
         printf( "decrease[ %d ] = %d\n", index,  
                svmt.decrease[ index ] );  
      }  
   
      printf( "origin = %d\n", svmt.origin );  
   
      for ( index = 0; index < 10; index++ ) {  
         printf( "increase[ %d ] = %d\n", index,  
                svmt.increase[ index ] );  
      }  
   }  
   
   /*  
    * Continue Processing  
    *   .  
    *   .  
    *   .  
    */  
   
   /*  
    * Close the opened Voice Channel Device  
    */  
   if ( dx_close( dxxxdev ) != 0 ) {  
      perror( "close" );  
   }  
   
   /* Terminate the Program */  
   exit( 0 );  
}

Errors

If this function returns -1 to indicate failure, use ATDV_LASTERR( ) and ATDV_ERRMSGP( ) to retrieve one of the following error reasons:

EDX_BADPARM	Invalid Parameter
EDX_BADPROD	Function not supported on this board
EDX_SPDVOL	Must Specify either SV_SPEEDTBL or SV_VOLUMETBL
EDX_SYSTEM	Error from operating system; use dx_fileerrno( ) to obtain error value

See Also

• dx_addspddig( )
• dx_addvoldig( )
• dx_adjsv( )
• dx_clrsvcond( )
• dx_getcursv( )
• dx_setsvcond( )
• dx_setsvmt( )
• Speed and Volume Modification Tables (Voice Software Reference: Voice Features Guide)
• DX_SVMT structure

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