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<span style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">From fe0ea37e566305be56d2a23ad34ba87e6336c0c7 Mon Sep 17 00:00:00 2001</span>
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From: Min Chen <chenm003@163.com></div>
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Date: Fri, 14 Mar 2025 22:27:02 -0700</div>
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Subject: [PATCH] Improve with check zeroMv for Slices option</div>
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<br>
</div>
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---</div>
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source/encoder/analysis.cpp | 20 ++++++++++++++++----</div>
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source/encoder/motion.cpp | 8 ++++++++</div>
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2 files changed, 24 insertions(+), 4 deletions(-)</div>
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<br>
</div>
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diff --git a/source/encoder/analysis.cpp b/source/encoder/analysis.cpp</div>
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index 5475e4800..b219d5da4 100644</div>
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--- a/source/encoder/analysis.cpp</div>
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+++ b/source/encoder/analysis.cpp</div>
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@@ -3172,12 +3172,18 @@ void Analysis::checkMerge2Nx2N_rd0_4(Mode& skip, Mode& merge, const CUGeom& cuGe</div>
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if (m_param->maxSlices > 1)</div>
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{</div>
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// NOTE: First row in slice can't negative</div>
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- if (X265_MIN(candMvField[i][0].mv.y, candMvField[i][1].mv.y) < m_sliceMinY)</div>
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+ if (candMvField[i][0].refIdx >= 0 && candMvField[i][0].mv.notZero() && candMvField[i][0].mv.y < m_sliceMinY)</div>
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+ continue;</div>
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+</div>
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+ if (candMvField[i][1].refIdx >= 0 && candMvField[i][1].mv.notZero() && candMvField[i][1].mv.y < m_sliceMinY)</div>
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continue;</div>
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</div>
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// Last row in slice can't reference beyond bound since it is another slice area</div>
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// TODO: we may beyond bound in future since these area have a chance to finish because we use parallel slices. Necessary prepare research on load balance</div>
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- if (X265_MAX(candMvField[i][0].mv.y, candMvField[i][1].mv.y) > m_sliceMaxY)</div>
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+ if (candMvField[i][0].refIdx >= 0 && candMvField[i][0].mv.notZero() && candMvField[i][0].mv.y > m_sliceMaxY)</div>
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+ continue;</div>
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+</div>
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+ if (candMvField[i][1].refIdx >= 0 && candMvField[i][1].mv.notZero() && candMvField[i][1].mv.y > m_sliceMaxY)</div>
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continue;</div>
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}</div>
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</div>
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@@ -3306,12 +3312,18 @@ void Analysis::checkMerge2Nx2N_rd5_6(Mode& skip, Mode& merge, const CUGeom& cuGe</div>
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if (m_param->maxSlices > 1)</div>
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{</div>
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// NOTE: First row in slice can't negative</div>
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- if (X265_MIN(candMvField[i][0].mv.y, candMvField[i][1].mv.y) < m_sliceMinY)</div>
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+ if (candMvField[i][0].refIdx >= 0 && candMvField[i][0].mv.notZero() && candMvField[i][0].mv.y < m_sliceMinY)</div>
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+ continue;</div>
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+</div>
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+ if (candMvField[i][1].refIdx >= 0 && candMvField[i][1].mv.notZero() && candMvField[i][1].mv.y < m_sliceMinY)</div>
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continue;</div>
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</div>
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// Last row in slice can't reference beyond bound since it is another slice area</div>
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// TODO: we may beyond bound in future since these area have a chance to finish because we use parallel slices. Necessary prepare research on load balance</div>
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- if (X265_MAX(candMvField[i][0].mv.y, candMvField[i][1].mv.y) > m_sliceMaxY)</div>
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+ if (candMvField[i][0].refIdx >= 0 && candMvField[i][0].mv.notZero() && candMvField[i][0].mv.y > m_sliceMaxY)</div>
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+ continue;</div>
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+</div>
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+ if (candMvField[i][1].refIdx >= 0 && candMvField[i][1].mv.notZero() && candMvField[i][1].mv.y > m_sliceMaxY)</div>
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continue;</div>
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}</div>
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</div>
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diff --git a/source/encoder/motion.cpp b/source/encoder/motion.cpp</div>
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index 58e943652..86f413c3d 100644</div>
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--- a/source/encoder/motion.cpp</div>
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+++ b/source/encoder/motion.cpp</div>
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@@ -1596,6 +1596,14 @@ me_hex2:</div>
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// check mv range for slice bound</div>
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X265_CHECK(((bmv.y >= qmvmin.y) & (bmv.y <= qmvmax.y)), "mv beyond range!");</div>
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</div>
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+ // Get a chance to ZeroMv</div>
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+ if (bmv.notZero())</div>
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+ {</div>
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+ int cost = subpelCompare(ref, MV(0, 0), satd) + mvcost(MV(0, 0));</div>
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+ if (cost <= bcost)</div>
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+ bmv = MV(0, 0);</div>
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+ }</div>
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+</div>
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x265_emms();</div>
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outQMv = bmv;</div>
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return bcost;</div>
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-- </div>
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2.43.0.windows.1</div>
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