Changeset 5702 for pjproject/trunk/pjmedia/src/pjmedia/conference.c

Timestamp:

Nov 27, 2017 3:29:07 AM (6 years ago)

Author:

ming

Message:

Fixed #2068: Add compile time option to enable/disable simple AGC in conference

File:

• pjproject/trunk/pjmedia/src/pjmedia/conference.c (modified) (1 diff)

pjproject/trunk/pjmedia/src/pjmedia/conference.c

@@ -76 +76 @@
  * in the port does not cause misaligned signal (which causes noise).
  */
-#define ATTACK_A    (conf->clock_rate / conf->samples_per_frame)
-#define ATTACK_B    1
-#define DECAY_A     0
-#define DECAY_B     1
-
-#define SIMPLE_AGC(last, target) \
+#if defined(PJMEDIA_CONF_USE_AGC) && PJMEDIA_CONF_USE_AGC != 0
+#   define ATTACK_A     ((conf->clock_rate / conf->samples_per_frame) >> 4)
+#   define ATTACK_B     1
+#   define DECAY_A      0
+#   define DECAY_B      1
+
+#   define SIMPLE_AGC(last, target) \
     if (target >= last) \
         target = (ATTACK_A*(last+1)+ATTACK_B*target)/(ATTACK_A+ATTACK_B); \
     else \
         target = (DECAY_A*last+DECAY_B*target)/(DECAY_A+DECAY_B)
+#else
+#   define SIMPLE_AGC(last, target)
+#endif
 
 #define MAX_LEVEL   (32767)