shithub: libvpx

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guard against space/time distortion

and divide by 0 errors

Change-Id: I8af5ca3d0913cb6f278fff754f8772bcb62e674a

--- a/vpxenc.c

+++ b/vpxenc.c

@@ -1342,6 +1342,8 @@

     if(now < cfg->rc_buf_initial_sz)

         return;

+    then = now;

+

     /* Sum the size over the past rc_buf_sz ms */

     for(i = hist->frames; i > 0; i--)

     {

@@ -1352,6 +1354,9 @@

             break;

         sum_sz += hist->sz[i_idx];

     }

+

+    if (now == then)

+        return;

     avg_bitrate = sum_sz * 8 * 1000 / (now - then);

     idx = avg_bitrate * (RATE_BINS/2) / (cfg->rc_target_bitrate * 1000);

-- 

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