[asterisk-bugs] [JIRA] (ASTERISK-26875) MixMonitor randomly out of sync

[Aaron An (JIRA)]

Aaron An created ASTERISK-26875:
-----------------------------------

             Summary: MixMonitor randomly out of sync
                 Key: ASTERISK-26875
                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-26875
             Project: Asterisk
          Issue Type: Bug
      Security Level: None
          Components: Applications/app_mixmonitor
    Affects Versions: 13.8.0
         Environment: CentOS6.5X64

            Reporter: Aaron An


MixMonitor randomly out of sync when s
Both side are PJSIP channel.
Asterisk call Alias，Alias answer and then go to the DIALPLAN to start MixMonitor and Dial Bob，Bob response 183 with SDP but no RTP stream feed. the record is out of sync.

just look at the audiohook.c line 180. if other_factory_samples is 0 we never flush the factory although  "our_factory_ms - other_factory_ms"  may very large.

====================audiohook.c=============================
	our_factory_samples = ast_slinfactory_available(factory);
	our_factory_ms = ast_tvdiff_ms(*rwtime, previous_time) + (our_factory_samples / (audiohook->hook_internal_samp_rate / 1000));
	other_factory_samples = ast_slinfactory_available(other_factory);
	other_factory_ms = other_factory_samples / (audiohook->hook_internal_samp_rate / 1000);

	if (ast_test_flag(audiohook, AST_AUDIOHOOK_TRIGGER_SYNC) && other_factory_samples && (our_factory_ms - other_factory_ms > AST_AUDIOHOOK_SYNC_TOLERANCE)) {
		ast_debug(1, "Flushing audiohook %p so it remains in sync\n", audiohook);
		ast_slinfactory_flush(factory);
		ast_slinfactory_flush(other_factory);
	}

====================audiohook.c=============================



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