[x265] [PATCH] pps: remove last slice qp from pps qp calculation

[Divya Manivannan]

# HG changeset patch
# User Divya Manivannan <divya at multicorewareinc.com>
# Date 1485264553 -19800
#      Tue Jan 24 18:59:13 2017 +0530
# Node ID b84d8a38de9c8f213a1392d578f60bd946edd046
# Parent  58dddcf01b7dbfd6aaa6858b5218e6166afe4def
pps: remove last slice qp from pps qp calculation

diff -r 58dddcf01b7d -r b84d8a38de9c source/encoder/encoder.cpp
--- a/source/encoder/encoder.cpp	Mon Jan 23 09:50:33 2017 +0530
+++ b/source/encoder/encoder.cpp	Tue Jan 24 18:59:13 2017 +0530
@@ -78,7 +78,6 @@
     m_offsetEmergency = NULL;
     m_iFrameNum = 0;
     m_iPPSQpMinus26 = 0;
-    m_iLastSliceQp = 0;
     m_rpsInSpsCount = 0;
     for (int i = 0; i < X265_MAX_FRAME_THREADS; i++)
         m_frameEncoder[i] = NULL;
@@ -1008,7 +1007,7 @@
 
                     /* If last slice Qp is close to (26 + m_iPPSQpMinus26) or outputs is all I-frame video,
                        we don't need to change m_iPPSQpMinus26. */
-                    if ((abs(m_iLastSliceQp - (26 + m_iPPSQpMinus26)) > 1) && (m_iFrameNum > 1))
+                    if (m_iFrameNum > 1)
                         m_iPPSQpMinus26 = (iLeastId + 1) - 26;
                     m_iFrameNum = 0;
                 }
diff -r 58dddcf01b7d -r b84d8a38de9c source/encoder/encoder.h
--- a/source/encoder/encoder.h	Mon Jan 23 09:50:33 2017 +0530
+++ b/source/encoder/encoder.h	Tue Jan 24 18:59:13 2017 +0530
@@ -162,7 +162,6 @@
     Lock               m_sliceQpLock;
     int                m_iFrameNum;   
     int                m_iPPSQpMinus26;
-    int                m_iLastSliceQp;
     int64_t            m_iBitsCostSum[QP_MAX_MAX + 1];
 
     Lock               m_sliceRefIdxLock;
diff -r 58dddcf01b7d -r b84d8a38de9c source/encoder/frameencoder.cpp
--- a/source/encoder/frameencoder.cpp	Mon Jan 23 09:50:33 2017 +0530
+++ b/source/encoder/frameencoder.cpp	Tue Jan 24 18:59:13 2017 +0530
@@ -494,7 +494,6 @@
             m_top->m_iBitsCostSum[i] += codeLength;
         }
         m_top->m_iFrameNum++;
-        m_top->m_iLastSliceQp = slice->m_sliceQp;
     }
 
     m_initSliceContext.resetEntropy(*slice);