From fd41cb849147b49466f0cb5a3efd09265c1dff20 Mon Sep 17 00:00:00 2001
From: Tero Rintaluoma <teror@google.com>
Date: Fri, 15 Jul 2011 14:47:44 +0300
Subject: [PATCH] Fixed rate histogram calculation
Using small values for --buf-sz= in command line causes
floating point exception due to division by zero.
Change-Id: Ibfe2d44db922993a78ebc9a4a1087d9625de48ae
---
vpxenc.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/vpxenc.c b/vpxenc.c
index 042f07b813..b765201531 100644
--- a/vpxenc.c
+++ b/vpxenc.c
@@ -1312,6 +1312,11 @@ static void init_rate_histogram(struct rate_hist *hist,
* adjustment (5/4) to account for alt-refs
*/
hist->samples = cfg->rc_buf_sz * 5 / 4 * fps->num / fps->den / 1000;
+
+ // prevent division by zero
+ if (hist->samples == 0)
+ hist->samples=1;
+
hist->pts = calloc(hist->samples, sizeof(*hist->pts));
hist->sz = calloc(hist->samples, sizeof(*hist->sz));
for(i=0; i<RATE_BINS; i++)
--
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