# HG changeset patch
# User Gopi Satykrishna Akisetty <[email protected]>
# Date 1487246003 -19800
# Thu Feb 16 17:23:23 2017 +0530
# Node ID c15f8bce9f4b27d28af43dbbbbb3001e4f36f42d
# Parent db913efb1a5999a75569628b8a4675e1b6b9e066
fix the chroma offset computation for HDR/WCG content
diff -r db913efb1a59 -r c15f8bce9f4b source/encoder/frameencoder.cpp
--- a/source/encoder/frameencoder.cpp Wed Feb 01 17:01:29 2017 +0530
+++ b/source/encoder/frameencoder.cpp Thu Feb 16 17:23:23 2017 +0530
@@ -485,8 +485,8 @@
slice->m_sliceQp = x265_clip3(-QP_BD_OFFSET, QP_MAX_SPEC, qp);
if (m_param->bHDROpt)
{
- int qpCb = x265_clip3(-12, 0, (int)round(m_top->m_cB * ((-.46) * qp +
9.26)));
- int qpCr = x265_clip3(-12, 0, (int)round(m_top->m_cR * ((-.46) * qp +
9.26)));
+ int qpCb = x265_clip3(-12, 0, (int)floor((m_top->m_cB * ((-.46) * qp +
9.26)) + 0.5 ));
+ int qpCr = x265_clip3(-12, 0, (int)floor((m_top->m_cR * ((-.46) * qp +
9.26)) + 0.5 ));
slice->m_chromaQpOffset[0] = slice->m_pps->chromaQpOffset[0] + qpCb <
-12 ? (qpCb + (-12 - (slice->m_pps->chromaQpOffset[0] + qpCb))) : qpCb;
slice->m_chromaQpOffset[1] = slice->m_pps->chromaQpOffset[1] + qpCr <
-12 ? (qpCr + (-12 - (slice->m_pps->chromaQpOffset[1] + qpCr))) : qpCr;
}
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