From 9dc0e40475e5326e2b9a1d0e0459f64d1aebb15c Mon Sep 17 00:00:00 2001
From: Jean-Marc Valin <jmvalin@jmvalin.ca>
Date: Mon, 24 Oct 2011 20:26:29 -0400
Subject: [PATCH] Disable CELT when FEC is on and we're losing too many packets
---
src/opus_encoder.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/src/opus_encoder.c b/src/opus_encoder.c
index bb31d682c..a108acde9 100644
--- a/src/opus_encoder.c
+++ b/src/opus_encoder.c
@@ -513,7 +513,7 @@ int opus_encode_float(OpusEncoder *st, const opus_val16 *pcm, int frame_size,
else if (st->application == OPUS_APPLICATION_VOIP)
voice_est = 115;
else
- voice_est = 64;
+ voice_est = 48;
if (st->force_channels!=OPUS_AUTO && st->channels == 2)
{
@@ -577,6 +577,9 @@ int opus_encode_float(OpusEncoder *st, const opus_val16 *pcm, int frame_size,
threshold += 4000;
st->mode = (equiv_rate >= threshold) ? MODE_CELT_ONLY: MODE_SILK_ONLY;
+
+ if (st->silk_mode.useInBandFEC && st->silk_mode.packetLossPercentage > (128-voice_est)>>4)
+ st->mode = MODE_SILK_ONLY;
#endif
} else {
st->mode = st->user_forced_mode;
--
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