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Developing a Fax Application
November 2009 76
for (;;)
{
BT_ZERO(args_fax);
args_fax.s_tp = tp;
args_fax.combine = 0;
if (BfvFaxNextPageTiff(lp,&args_fax) <= 0)
break;
BT_ZERO(args_fax);
args_fax.s_tp = tp;
if (BfvFaxSendPageTiff(lp,&args_fax) < 0)
break;
}
Loops through the TIFF-F file, getting the next page and sending it
to the driver.
BfvFaxEndOfDocument(lp, &args_fax);
Finishes up when the TIFF data is exhausted.
BT_ZERO(args_tiff);
args_tiff.tp = tp;
BfvTiffClose(&args_tiff);
Closes the TIFF-F file after the file is transmitted.
BT_ZERO(args_admin);
BfvLineDetach (lp, &args_admin);
Frees all the memory for the attached line and closes the device.
Receiving a Fax Using Calls for TIFF-F Files
One way to receive a fax using function calls for TIFF-F files is
demonstrated below. Each function is presented in sequential order,
and the action it performs is described beneath it.
BT_ZERO(args_admin);
args_admin.unit = unit;
lp = BfvLineAttach(&args_admin);
Attaches to a free channel and gets a BTLINE pointer.
args_admin.config_file_name = "usrcnfig.cfg";
BfvLineReset(lp,&args_admin);
Resets the channel and sets the user-configured options in the
user-defined configuration file named usrcnfig.cfg.
BT_ZERO(args_tiff);
args_tiff.fname = name;
args_tiff.fmode = "w";
tp = BfvTiffOpen(&args_tiff);
Opens the TIFF-F file name to store the received fax.