add WAITSTATUS channel variable output to WaitForSilence() application (bug #4256)
[asterisk/asterisk.git] / apps / app_waitforsilence.c
index 3272017..811cee4 100755 (executable)
@@ -40,6 +40,9 @@ static char *synopsis = "Waits for a specified amount of silence";
 static char *descrip = 
 "  WaitForSilence(x[|y]) Wait for Silence: Waits for up to 'x' \n"
 "milliseconds of silence, 'y' times or 1 if omitted\n"
+"Set the channel variable WAITSTATUS with to one of these values:"
+"SILENCE - if silence of x ms was detected"
+"TIMEOUT - if silence of x ms was not detected."
 "Examples:\n"
 "  - WaitForSilence(500,2) will wait for 1/2 second of silence, twice\n"
 "  - WaitForSilence(1000) will wait for 1 second of silence, once\n";
@@ -58,6 +61,8 @@ static int do_waiting(struct ast_channel *chan, int maxsilence) {
        int rfmt = 0;
        int res = 0;
        struct ast_dsp *sildet;  /* silence detector dsp */
+       time_t start, now;
+       time(&start);
 
        rfmt = chan->readformat; /* Set to linear mode */
        res = ast_set_read_format(chan, AST_FORMAT_SLINEAR);
@@ -97,17 +102,26 @@ static int do_waiting(struct ast_channel *chan, int maxsilence) {
                if (f->frametype == AST_FRAME_VOICE) {
                        dspsilence = 0;
                        ast_dsp_silence(sildet, f, &dspsilence);
-                       if (dspsilence)
+                       if (dspsilence) {
                                totalsilence = dspsilence;
-                       else
+                               time(&start);
+                       } else {
                                totalsilence = 0;
+                       }
 
                        if (totalsilence >= maxsilence) {
                                if (option_verbose > 2)
                                        ast_verbose(VERBOSE_PREFIX_3 "Exiting with %dms silence > %dms required\n", totalsilence, maxsilence);
                                /* Ended happily with silence */
-                               ast_frfree(f);
                                gotsilence = 1;
+                               pbx_builtin_setvar_helper(chan, "WAITSTATUS", "SILENCE");
+                               ast_log(LOG_DEBUG, "WAITSTATUS was set to SILENCE\n");
+                               ast_frfree(f);
+                               break;
+                       } else if ( difftime(time(&now),start) >= maxsilence/1000 ) {
+                               pbx_builtin_setvar_helper(chan, "WAITSTATUS", "TIMEOUT");
+                               ast_log(LOG_DEBUG, "WAITSTATUS was set to TIMEOUT\n");
+                               ast_frfree(f);
                                break;
                        }
                }