<div dir="ltr"><div>Thanks.<br><br></div>With the smoke tests, about 2/3rd of the tests
show positive/neutral encode efficiency gains, while a third show
marginally lower encode efficiency, with a couple of commandlines
showing a surprising drop. <div class="gmail_extra"><br><div class="gmail_quote">On Tue, May 19, 2015 at 6:45 PM, <span dir="ltr"><<a href="mailto:ashok@multicorewareinc.com" target="_blank">ashok@multicorewareinc.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"># HG changeset patch<br>
# User Ashok Kumar Mishra<<a href="mailto:ashok@multicorewareinc.com">ashok@multicorewareinc.com</a>><br>
# Date 1431933378 -19800<br>
# Mon May 18 12:46:18 2015 +0530<br>
# Node ID 1e2e70f90e4484b32217c7579bca98180929cf72<br>
# Parent d7b100e51e828833eee006f1da93e499ac161d28<br>
analysis: re-order RD 0/4 analysis to do splits before ME or intra<br>
<br>
diff -r d7b100e51e82 -r 1e2e70f90e44 source/encoder/analysis.cpp<br>
--- a/source/encoder/analysis.cpp Mon May 18 18:24:08 2015 -0500<br>
+++ b/source/encoder/analysis.cpp Mon May 18 12:46:18 2015 +0530<br>
@@ -756,19 +756,79 @@<br>
bool mightSplit = !(cuGeom.flags & CUGeom::LEAF);<br>
bool mightNotSplit = !(cuGeom.flags & CUGeom::SPLIT_MANDATORY);<br>
uint32_t minDepth = topSkipMinDepth(parentCTU, cuGeom);<br>
-<br>
+ bool earlyskip = false;<br>
if (mightNotSplit && depth >= minDepth)<br>
{<br>
- bool bTryIntra = m_slice->m_sliceType != B_SLICE || m_param->bIntraInBFrames;<br>
-<br>
/* Compute Merge Cost */<br>
md.pred[PRED_MERGE].cu.initSubCU(parentCTU, cuGeom, qp);<br>
md.pred[PRED_SKIP].cu.initSubCU(parentCTU, cuGeom, qp);<br>
checkMerge2Nx2N_rd0_4(md.pred[PRED_SKIP], md.pred[PRED_MERGE], cuGeom);<br>
-<br>
- bool earlyskip = false;<br>
if (m_param->rdLevel)<br>
earlyskip = m_param->bEnableEarlySkip && md.bestMode && md.bestMode->cu.isSkipped(0); // TODO: sa8d threshold per depth<br>
+ }<br>
+<br>
+ bool bNoSplit = false;<br>
+ if (md.bestMode)<br>
+ {<br>
+ bNoSplit = md.bestMode->cu.isSkipped(0);<br>
+ if (mightSplit && depth && depth >= minDepth && !bNoSplit)<br>
+ bNoSplit = recursionDepthCheck(parentCTU, cuGeom, *md.bestMode);<br>
+ }<br>
+<br>
+ if (mightSplit && !bNoSplit)<br>
+ {<br>
+ Mode* splitPred = &md.pred[PRED_SPLIT];<br>
+ splitPred->initCosts();<br>
+ CUData* splitCU = &splitPred->cu;<br>
+ splitCU->initSubCU(parentCTU, cuGeom, qp);<br>
+<br>
+ uint32_t nextDepth = depth + 1;<br>
+ ModeDepth& nd = m_modeDepth[nextDepth];<br>
+ invalidateContexts(nextDepth);<br>
+ Entropy* nextContext = &m_rqt[depth].cur;<br>
+ int nextQP = qp;<br>
+<br>
+ for (uint32_t subPartIdx = 0; subPartIdx < 4; subPartIdx++)<br>
+ {<br>
+ const CUGeom& childGeom = *(&cuGeom + cuGeom.childOffset + subPartIdx);<br>
+ if (childGeom.flags & CUGeom::PRESENT)<br>
+ {<br>
+ m_modeDepth[0].fencYuv.copyPartToYuv(nd.fencYuv, childGeom.absPartIdx);<br>
+ m_rqt[nextDepth].cur.load(*nextContext);<br>
+<br>
+ if (m_slice->m_pps->bUseDQP && nextDepth <= m_slice->m_pps->maxCuDQPDepth)<br>
+ nextQP = setLambdaFromQP(parentCTU, calculateQpforCuSize(parentCTU, childGeom));<br>
+<br>
+ compressInterCU_rd0_4(parentCTU, childGeom, nextQP);<br>
+<br>
+ // Save best CU and pred data for this sub CU<br>
+ splitCU->copyPartFrom(nd.bestMode->cu, childGeom, subPartIdx);<br>
+ splitPred->addSubCosts(*nd.bestMode);<br>
+<br>
+ if (m_param->rdLevel)<br>
+ nd.bestMode->reconYuv.copyToPartYuv(splitPred->reconYuv, childGeom.numPartitions * subPartIdx);<br>
+ else<br>
+ nd.bestMode->predYuv.copyToPartYuv(splitPred->predYuv, childGeom.numPartitions * subPartIdx);<br>
+ if (m_param->rdLevel > 1)<br>
+ nextContext = &nd.bestMode->contexts;<br>
+ }<br>
+ else<br>
+ splitCU->setEmptyPart(childGeom, subPartIdx);<br>
+ }<br>
+ nextContext->store(splitPred->contexts);<br>
+<br>
+ if (mightNotSplit)<br>
+ addSplitFlagCost(*splitPred, cuGeom.depth);<br>
+ else if (m_param->rdLevel > 1)<br>
+ updateModeCost(*splitPred);<br>
+ else<br>
+ splitPred->sa8dCost = m_rdCost.calcRdSADCost(splitPred->distortion, splitPred->sa8dBits);<br>
+ }<br>
+<br>
+ if (mightNotSplit && depth >= minDepth)<br>
+ {<br>
+ if (m_slice->m_pps->bUseDQP && depth <= m_slice->m_pps->maxCuDQPDepth && m_slice->m_pps->maxCuDQPDepth != 0)<br>
+ setLambdaFromQP(parentCTU, qp);<br>
<br>
if (!earlyskip)<br>
{<br>
@@ -834,7 +894,7 @@<br>
bestInter = &md.pred[PRED_nRx2N];<br>
}<br>
}<br>
-<br>
+ bool bTryIntra = m_slice->m_sliceType != B_SLICE || m_param->bIntraInBFrames;<br>
if (m_param->rdLevel >= 3)<br>
{<br>
/* Calculate RD cost of best inter option */<br>
@@ -950,63 +1010,19 @@<br>
addSplitFlagCost(*md.bestMode, cuGeom.depth);<br>
}<br>
<br>
- bool bNoSplit = false;<br>
- if (md.bestMode)<br>
+ if (mightNotSplit && md.bestMode)<br>
{<br>
- bNoSplit = md.bestMode->cu.isSkipped(0);<br>
- if (mightSplit && depth && depth >= minDepth && !bNoSplit)<br>
- bNoSplit = recursionDepthCheck(parentCTU, cuGeom, *md.bestMode);<br>
+ /* early-out statistics */<br>
+ FrameData& curEncData = *m_frame->m_encData;<br>
+ FrameData::RCStatCU& cuStat = curEncData.m_cuStat[parentCTU.m_cuAddr];<br>
+ uint64_t temp = cuStat.avgCost[depth] * cuStat.count[depth];<br>
+ cuStat.count[depth] += 1;<br>
+ cuStat.avgCost[depth] = (temp + md.bestMode->rdCost) / cuStat.count[depth];<br>
}<br></blockquote><div><br></div><div>This stats accumulation above should be moved further below - so in the case where only split costs were available, the early out stats would not change significantly. I have a suspicion this caused the drop in encode efficiency. <br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<br>
if (mightSplit && !bNoSplit)<br>
{<br>
Mode* splitPred = &md.pred[PRED_SPLIT];<br>
- splitPred->initCosts();<br>
- CUData* splitCU = &splitPred->cu;<br>
- splitCU->initSubCU(parentCTU, cuGeom, qp);<br>
-<br>
- uint32_t nextDepth = depth + 1;<br>
- ModeDepth& nd = m_modeDepth[nextDepth];<br>
- invalidateContexts(nextDepth);<br>
- Entropy* nextContext = &m_rqt[depth].cur;<br>
- int nextQP = qp;<br>
-<br>
- for (uint32_t subPartIdx = 0; subPartIdx < 4; subPartIdx++)<br>
- {<br>
- const CUGeom& childGeom = *(&cuGeom + cuGeom.childOffset + subPartIdx);<br>
- if (childGeom.flags & CUGeom::PRESENT)<br>
- {<br>
- m_modeDepth[0].fencYuv.copyPartToYuv(nd.fencYuv, childGeom.absPartIdx);<br>
- m_rqt[nextDepth].cur.load(*nextContext);<br>
-<br>
- if (m_slice->m_pps->bUseDQP && nextDepth <= m_slice->m_pps->maxCuDQPDepth)<br>
- nextQP = setLambdaFromQP(parentCTU, calculateQpforCuSize(parentCTU, childGeom));<br>
-<br>
- compressInterCU_rd0_4(parentCTU, childGeom, nextQP);<br>
-<br>
- // Save best CU and pred data for this sub CU<br>
- splitCU->copyPartFrom(nd.bestMode->cu, childGeom, subPartIdx);<br>
- splitPred->addSubCosts(*nd.bestMode);<br>
-<br>
- if (m_param->rdLevel)<br>
- nd.bestMode->reconYuv.copyToPartYuv(splitPred->reconYuv, childGeom.numPartitions * subPartIdx);<br>
- else<br>
- nd.bestMode->predYuv.copyToPartYuv(splitPred->predYuv, childGeom.numPartitions * subPartIdx);<br>
- if (m_param->rdLevel > 1)<br>
- nextContext = &nd.bestMode->contexts;<br>
- }<br>
- else<br>
- splitCU->setEmptyPart(childGeom, subPartIdx);<br>
- }<br>
- nextContext->store(splitPred->contexts);<br>
-<br>
- if (mightNotSplit)<br>
- addSplitFlagCost(*splitPred, cuGeom.depth);<br>
- else if (m_param->rdLevel > 1)<br>
- updateModeCost(*splitPred);<br>
- else<br>
- splitPred->sa8dCost = m_rdCost.calcRdSADCost(splitPred->distortion, splitPred->sa8dBits);<br>
-<br>
if (!md.bestMode)<br>
md.bestMode = splitPred;<br>
else if (m_param->rdLevel > 1)<br>
@@ -1016,21 +1032,11 @@<br>
<br>
checkDQPForSplitPred(*md.bestMode, cuGeom);<br>
}<br>
- if (mightNotSplit)<br>
- {<br>
- /* early-out statistics */<br>
- FrameData& curEncData = *m_frame->m_encData;<br>
- FrameData::RCStatCU& cuStat = curEncData.m_cuStat[parentCTU.m_cuAddr];<br>
- uint64_t temp = cuStat.avgCost[depth] * cuStat.count[depth];<br>
- cuStat.count[depth] += 1;<br>
- cuStat.avgCost[depth] = (temp + md.bestMode->rdCost) / cuStat.count[depth];<br>
- }<br>
<br>
/* Copy best data to encData CTU and recon */<br>
X265_CHECK(md.bestMode->ok(), "best mode is not ok");<br>
md.bestMode->cu.copyToPic(depth);<br>
- if (md.bestMode != &md.pred[PRED_SPLIT] && m_param->rdLevel)<br>
- md.bestMode->reconYuv.copyToPicYuv(*m_frame->m_reconPic, cuAddr, cuGeom.absPartIdx);<br>
+ md.bestMode->reconYuv.copyToPicYuv(*m_frame->m_reconPic, cuAddr, cuGeom.absPartIdx);<br>
}<br>
<br>
void Analysis::compressInterCU_rd5_6(const CUData& parentCTU, const CUGeom& cuGeom, uint32_t &zOrder, int32_t qp)<br>
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</blockquote></div><br></div></div>