[x265] [PATCH] slicetype: compute frame satd cost for zero latency

[aarthi at multicorewareinc.com]

# HG changeset patch
# User Aarthi Thirumalai
# Date 1406545360 -19800
#      Mon Jul 28 16:32:40 2014 +0530
# Node ID a8c3e4d73eccfc69d9fa657cb84fa8c17749e70e
# Parent  8bab5275baed85f8a6e183d7edfeba9a516a3669
slicetype: compute frame satd cost for zero latency

diff -r 8bab5275baed -r a8c3e4d73ecc source/encoder/slicetype.cpp
--- a/source/encoder/slicetype.cpp	Mon Jul 28 00:14:55 2014 -0500
+++ b/source/encoder/slicetype.cpp	Mon Jul 28 16:32:40 2014 +0530
@@ -430,9 +430,15 @@
     }
 
     /* calculate the frame costs ahead of time for estimateFrameCost while we still have lowres */
-    if (m_param->rc.rateControlMode != X265_RC_CQP && maxSearch > 0)
+    if (m_param->rc.rateControlMode != X265_RC_CQP)
     {
         int p0, p1, b;
+        /* For zero latency tuning, calculate frame cost to be used later in RC */
+        if (!maxSearch)
+        {
+            for (int i = 0; i <= bframes; i++)
+               frames[i + 1] = &list[i]->m_lowres;
+        }
 
         /* estimate new non-B cost */
         p1 = b = bframes + 1;