From c4ac57023c28da3cfdff6abccf02ca0eb90c939f Mon Sep 17 00:00:00 2001
From: Jean-Marc Valin <jean-marc.valin@octasic.com>
Date: Wed, 26 May 2010 15:04:41 -0400
Subject: [PATCH] Fixed a long-standing rare mismatch
In cases where the coarse energy quantizer wasn't able to
go down fast enough, we could have a negative error that didn't
get clamped.
---
libcelt/quant_bands.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/libcelt/quant_bands.c b/libcelt/quant_bands.c
index 391d58c93..8ddedc221 100644
--- a/libcelt/quant_bands.c
+++ b/libcelt/quant_bands.c
@@ -164,6 +164,8 @@ void quant_fine_energy(const CELTMode *m, int start, celt_ener *eBands, celt_wor
#endif
if (q2 > frac-1)
q2 = frac-1;
+ if (q2<0)
+ q2 = 0;
ec_enc_bits(enc, q2, fine_quant[i]);
#ifdef FIXED_POINT
offset = SUB16(SHR16(SHL16(q2,DB_SHIFT)+QCONST16(.5,DB_SHIFT),fine_quant[i]),QCONST16(.5f,DB_SHIFT));
--
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