Changeset 2840

Timestamp:

Jul 18, 2009 9:18:26 AM (15 years ago)

Author:

bennylp

Message:

More ticket #920: fixed wrong latency calculation when there is loud noise in the start of recording

File:

• pjproject/trunk/pjsip-apps/src/pjsystest/systest.c (modified) (3 diffs)

pjproject/trunk/pjsip-apps/src/pjsystest/systest.c

@@ -616 +616 @@
     unsigned i, samples_per_frame, read, len;
     unsigned start_pos;
+    pj_bool_t first;
     pj_status_t status;
 
@@ -645 +646 @@
     }
 
+    /* Zero the first 500ms to remove loud click noises 
+     * (keypad press, etc.)
+     */
+    pjmedia_zero_samples(buf, wav->info.clock_rate / 2);
+
     /* Loop to calculate latency */
     start_pos = 0;
+    first = PJ_TRUE;
     while (start_pos < len/2 - wav->info.clock_rate) {
         int max_signal = 0;
@@ -692 +699 @@
 
         /* Advance next loop */
-        if (start_pos == 0) {
+        if (first) {
             start_pos = max_signal_pos + wav->info.clock_rate * 9 / 10;
+            first = PJ_FALSE;
         } else {
             start_pos += wav->info.clock_rate;