[x265] [PATCH 3 of 3] improve fillReferenceSamples by merge pixel fill

[Min Chen]

# HG changeset patch
# User Min Chen <chenm003 at 163.com>
# Date 1428059415 -28800
# Node ID 01ca2aaf903cd249308bfd60494b850ad14ad8e9
# Parent  7882a5f07b75fc4691de46067e4a7b8fd0ab11eb
improve fillReferenceSamples by merge pixel fill
---
 source/common/predict.cpp |   20 ++++++++++++++++++++
 1 files changed, 20 insertions(+), 0 deletions(-)

diff -r 7882a5f07b75 -r 01ca2aaf903c source/common/predict.cpp
--- a/source/common/predict.cpp	Fri Apr 03 19:10:12 2015 +0800
+++ b/source/common/predict.cpp	Fri Apr 03 19:10:15 2015 +0800
@@ -817,7 +817,9 @@
             const pixel refSample = *pAdiLineNext;
             // Pad unavailable samples with new value
             int nextOrTop = X265_MIN(next, leftUnits);
+
             // fill left column
+#if HIGH_BIT_DEPTH
             while (curr < nextOrTop)
             {
                 for (int i = 0; i < unitHeight; i++)
@@ -836,6 +838,24 @@
                 adi += unitWidth;
                 curr++;
             }
+#else
+            X265_CHECK(curr <= nextOrTop, "curr must be less than or equal to nextOrTop\n");
+            if (curr < nextOrTop)
+            {
+                const int fillSize = unitHeight * (nextOrTop - curr);
+                memset(adi, refSample, fillSize * sizeof(pixel));
+                curr = nextOrTop;
+                adi += fillSize;
+            }
+
+            if (curr < next)
+            {
+                const int fillSize = unitWidth * (next - curr);
+                memset(adi, refSample, fillSize * sizeof(pixel));
+                curr = next;
+                adi += fillSize;
+            }
+#endif
         }
 
         // pad all other reference samples.