From: James Zern Date: Thu, 29 Sep 2016 00:39:05 +0000 (-0700) Subject: vpx_dsp/get_prob: relocate den == 0 test X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=8b4210940ce4183d4cfded42c323612c0c6d1688;p=libvpx vpx_dsp/get_prob: relocate den == 0 test to get_binary_prob(). the only other caller mode_mv_merge_probs() does its own test on 0. BUG=chromium:639712 Change-Id: I1178688706baeca2883f7aadbc254abb219a44ce (cherry picked from commit 93c823e24b7b5b91de729217075c08e9082b80bd) --- diff --git a/vpx_dsp/prob.h b/vpx_dsp/prob.h index 4402cd30a..5656ddbab 100644 --- a/vpx_dsp/prob.h +++ b/vpx_dsp/prob.h @@ -11,6 +11,8 @@ #ifndef VPX_DSP_PROB_H_ #define VPX_DSP_PROB_H_ +#include + #include "./vpx_config.h" #include "./vpx_dsp_common.h" @@ -44,7 +46,7 @@ typedef int8_t vpx_tree_index; typedef const vpx_tree_index vpx_tree[]; static INLINE vpx_prob get_prob(unsigned int num, unsigned int den) { - if (den == 0) return 128u; + assert(den != 0); { const int p = (int)(((int64_t)num * 256 + (den >> 1)) / den); // (p > 255) ? 255 : (p < 1) ? 1 : p; @@ -54,7 +56,9 @@ static INLINE vpx_prob get_prob(unsigned int num, unsigned int den) { } static INLINE vpx_prob get_binary_prob(unsigned int n0, unsigned int n1) { - return get_prob(n0, n0 + n1); + const unsigned int den = n0 + n1; + if (den == 0) return 128u; + return get_prob(n0, den); } /* This function assumes prob1 and prob2 are already within [1,255] range. */