Dialogic 6.2 Manuale Utente

Developing a Fax Application

November 2009

The second method uses the normal TIFF sending functions to

transmit a TIFF file that is preceded or succeeded by other G3 or

ASCII files that are transmitted with either the

noninfopkt-formatted raw data fax functions or the TIFF file fax

functions.

To use the second method successfully, the user must pay attention

to the combine argument of the BfvFaxNextPageTiff function (see

the function description in Volume 4, Fax Processing, Bfv API

Reference Manual for detailed information). When the combine

argument is 1, the page information for the TIFF G3 data is sent to

the channel without beginning a new page (do not call the

BfvFaxStripParams function to do this).

For example, a program to send a page composed of ASCII combined

with G3 from a TIFF file that is combined with G3 from a raw file

could look like this:

/* Set up call prior */

/* Begin fax transmission, normal resolution, */

/* normal width */

BT_ZERO(args_fax);

args_fax.resolution = RES_200H_100V;

args_fax.width = WIDTH_A4;

BfvFaxBeginSendRaw(lp, &args_fax);

BfvFaxGetRemoteInfo(lp, &args_fax);

BfvFaxWaitForTraining(lp, &args_fax);

BT_ZERO(args_fax);

args_fax.fname = "ascii_file";

args_fax.fmt = DATA_ASCII;

BfvFaxSendFile(lp, &args_fax);

BT_ZERO(args_tiff);

args_tiff.fname = "tiff_file";

args_tiff.fmode = "r";

tp = BfvTiffOpen(&args_tiff);

/* No BfvFaxStripParams call is needed here, */

/* due to a combine value of 1 */

BT_ZERO(args_fax);

args_fax.s_tp = tp;

args_fax.combine = 1;

BfvFaxNextPageTiff(lp,&args_fax);

BT_ZERO(args_fax);

args_fax.s_tp = tp;

BfvFaxSendPageTiff(lp,&args_fax);

BT_ZERO(args_tiff);

args_tiff.tp = tp;

BfvTiffClose(&args_tiff);