# HG changeset patch
# User Satoshi Nakagawa <[email protected]>
# Date 1395672158 -32400
# Mon Mar 24 23:42:38 2014 +0900
# Node ID 08584b5913bce6a5f9d2f0d408fcdace6aa83a65
# Parent fdd7c6168cf42a11240ff1c7fc7b401605524db2
fix chroma lambda weighting
diff -r fdd7c6168cf4 -r 08584b5913bc source/encoder/frameencoder.cpp
--- a/source/encoder/frameencoder.cpp Fri Mar 21 14:44:35 2014 -0500
+++ b/source/encoder/frameencoder.cpp Mon Mar 24 23:42:38 2014 +0900
@@ -335,11 +335,10 @@
// instead we weight the distortion of chroma.
int chromaQPOffset = slice->getPPS()->getChromaCbQpOffset() +
slice->getSliceQpDeltaCb();
int qpc = Clip3(0, MAX_MAX_QP, qp + chromaQPOffset);
- double cbWeight = pow(2.0, (qp - g_chromaScale[chFmt][qpc])); // takes
into account of the chroma qp mapping and chroma qp Offset
-
+ double cbWeight = pow(2.0, (qp - g_chromaScale[chFmt][qpc]) / 3.0); //
takes into account of the chroma qp mapping and chroma qp Offset
chromaQPOffset = slice->getPPS()->getChromaCrQpOffset() +
slice->getSliceQpDeltaCr();
qpc = Clip3(0, MAX_MAX_QP, qp + chromaQPOffset);
- double crWeight = pow(2.0, (qp - g_chromaScale[chFmt][qpc])); // takes
into account of the chroma qp mapping and chroma qp Offset
+ double crWeight = pow(2.0, (qp - g_chromaScale[chFmt][qpc]) / 3.0); //
takes into account of the chroma qp mapping and chroma qp Offset
double chromaLambda = lambda / crWeight;
m_rows[row].m_search.setQPLambda(qp, lambda, chromaLambda);
@@ -376,10 +375,10 @@
int qpc;
int chromaQPOffset = slice->getPPS()->getChromaCbQpOffset() +
slice->getSliceQpDeltaCb();
qpc = Clip3(0, MAX_MAX_QP, qp + chromaQPOffset);
- double cbWeight = pow(2.0, (qp - g_chromaScale[chFmt][qpc])); // takes
into account of the chroma qp mapping and chroma qp Offset
+ double cbWeight = pow(2.0, (qp - g_chromaScale[chFmt][qpc]) / 3.0); //
takes into account of the chroma qp mapping and chroma qp Offset
chromaQPOffset = slice->getPPS()->getChromaCrQpOffset() +
slice->getSliceQpDeltaCr();
qpc = Clip3(0, MAX_MAX_QP, qp + chromaQPOffset);
- double crWeight = pow(2.0, (qp - g_chromaScale[chFmt][qpc])); // takes
into account of the chroma qp mapping and chroma qp Offset
+ double crWeight = pow(2.0, (qp - g_chromaScale[chFmt][qpc]) / 3.0); //
takes into account of the chroma qp mapping and chroma qp Offset
double chromaLambda = lambda / crWeight;
// NOTE: set SAO lambda every Frame
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