Changeset 3115 for pjproject/trunk/pjmedia/src/pjmedia/sound_port.c

Timestamp:

Mar 3, 2010 2:47:35 PM (14 years ago)

Author:

nanang

Message:

Ticket #1042, minor updates related to AEC:

• Added requirement of AEC minimal latency between reference and echo in aectest sample app.
• Modified AEC latency in sound port to 3/4 of playback latency.
• Few cleaned up echo_common.c: unused vars, a bit stricter latency check (to be at least as much as PTIME).

File:

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

pjproject/trunk/pjmedia/src/pjmedia/sound_port.c

@@ -564 +564 @@
             //delay_ms = (si.rec_latency + si.play_latency) * 1000 /
             //     snd_port->clock_rate;
-            delay_ms = prm.output_latency_ms;
+            /* Set EC latency to 3/4 of output latency to reduce the
+             * possibility of missing/late reference frame.
+             */
+            delay_ms = prm.output_latency_ms * 3/4;
             status = pjmedia_echo_create2(pool, snd_port->clock_rate, 
                                           snd_port->channel_count,