From 57092f9dca12f587a5fc1625f45d88c6977edc81 Mon Sep 17 00:00:00 2001
From: Jean-Marc Valin <jmvalin@jmvalin.ca>
Date: Wed, 13 Feb 2019 13:33:42 -0500
Subject: Improve silence handling

Copy the previous analysis data instead of flagging as invalid
---
 src/analysis.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/analysis.c b/src/analysis.c
index 23bae422..cb46dec5 100644
--- a/src/analysis.c
+++ b/src/analysis.c
@@ -547,7 +547,11 @@ static void tonality_analysis(TonalityAnalysisState *tonal, const CELTMode *celt
     tonal->mem_fill = 240 + remaining;
     if (is_silence)
     {
-       info->valid = 0;
+       /* On silence, copy the previous analysis. */
+       int prev_pos = tonal->write_pos-2;
+       if (prev_pos < 0)
+          prev_pos += DETECT_SIZE;
+       OPUS_COPY(info, &tonal->info[prev_pos], 1);
        RESTORE_STACK;
        return;
     }
-- 
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