From bc9293b8159b68e64d9b73e118b90f9fdadd6d80 Mon Sep 17 00:00:00 2001
From: Alpha Lam <hclam@google.com>
Date: Tue, 30 Aug 2011 19:23:34 +0100
Subject: [PATCH] Recalculate zbin_extra only if regular quantizer is being
used
vp8_update_zbin_extra() is called all the time even though the fast
quantizer doesn't use it. Skip this call if fast quantizer is used.
Change-Id: Ia711c38431930cc2486cf59b8466060ef0e9d9db
---
vp8/encoder/encodeframe.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/vp8/encoder/encodeframe.c b/vp8/encoder/encodeframe.c
index 5d4e7e71eb..a19425993a 100644
--- a/vp8/encoder/encodeframe.c
+++ b/vp8/encoder/encodeframe.c
@@ -1257,7 +1257,11 @@ int vp8cx_encode_inter_macroblock
cpi->zbin_mode_boost = MV_ZBIN_BOOST;
}
}
- vp8_update_zbin_extra(cpi, x);
+
+ /* The fast quantizer doesn't use zbin_extra, only do so with
+ * the regular quantizer. */
+ if (cpi->sf.improved_quant)
+ vp8_update_zbin_extra(cpi, x);
}
cpi->count_mb_ref_frame_usage[xd->mode_info_context->mbmi.ref_frame] ++;
--
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