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Developing a Fax Application
November 2009 68
for (;;)
{
BT_ZERO(args_fax);
args_fax.s_ips = ips;
if ((ret = BfvFaxNextPage(lp, &args_fax)) <= 0 )
break;
BfvFaxSendPage(lp, &args_fax);
}
Loops through the infopkt stream, getting the next page and
transmitting it to the driver.
BfvFaxEndOfDocument(lp, &args_fax);
Finishes up when the infopkt stream is exhausted.
BT_ZERO(args_infopkt);
args_infopkt.ips = ips;
BfvInfopktClose (&args_infopkt);
Closes the infopkt stream file after the file is sent.
BT_ZERO(args_admin);
BfvLineDetach (lp, &args_admin);
Frees all memory for the attached line and closes the device.
You can replace some low-level functions with a high-level function,
for example:
Receiving a Fax Using Low-Level Infopkt Function Calls One way
to receive a fax using the low-level infopkt fax function calls 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.
BfvLineDialString
BfvLineCallProgressEnable
BfvDataCP
BfvLineCallProgressDisable
These low level functions are
replaced with the high level
function BfvLineOriginateCall.
BfvFaxSetLocalID
BfvFaxBeginSend
BfvFaxGetRemoteInfo
BfvFaxWaitForTraining
BfvFaxSendPage
BfvFaxEndOfDocument
These low level functions are
replaced with the high level
function BfvFaxSend.