From 6d843227626a9e3775b4309100532d586356cd43 Mon Sep 17 00:00:00 2001
From: Paul Wilkins <paulwilkins@google.com>
Date: Wed, 29 Feb 2012 12:32:46 -0800
Subject: [PATCH] vp8e - force at least some change in over and under shoots
Change-Id: Ie1796f272dc33bf5a1c8ac990da625961d272aa9
---
vp8/encoder/ratectrl.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/vp8/encoder/ratectrl.c b/vp8/encoder/ratectrl.c
index f4ed30026e..bf84035aa7 100644
--- a/vp8/encoder/ratectrl.c
+++ b/vp8/encoder/ratectrl.c
@@ -1532,6 +1532,15 @@ void vp8_compute_frame_size_bounds(VP8_COMP *cpi, int *frame_under_shoot_limit,
}
}
}
+
+ // For very small rate targets where the fractional adjustment
+ // (eg * 7/8) may be tiny make sure there is at least a minimum
+ // range.
+ *frame_over_shoot_limit += 200;
+ *frame_under_shoot_limit -= 200;
+ if ( *frame_under_shoot_limit < 0 )
+ *frame_under_shoot_limit = 0;
+
}
}
--
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