Merge branch 'JVET_N0449_MMVD_SIMP' into 'master'

JVET-N0449: Simplification on MMVD distance table

See merge request jvet/VVCSoftware_VTM!414

cfg/encoder_lowdelay_P_vtm.cfg

@@ -134,8 +134,9 @@ AMaxBT                       : 1
 
 # Encoder optimization tools
 AffineAmvrEncOpt             : 0
-
+MmvdDisNum		     : 6
 ### DO NOT ADD ANYTHING BELOW THIS LINE ###
 ### DO NOT DELETE THE EMPTY LINE BELOW ###
 
 
+

cfg/encoder_lowdelay_vtm.cfg

@@ -137,8 +137,9 @@ AMaxBT                       : 1
 
 # Encoder optimization tools
 AffineAmvrEncOpt             : 0
-
+MmvdDisNum		     : 6
 ### DO NOT ADD ANYTHING BELOW THIS LINE ###
 ### DO NOT DELETE THE EMPTY LINE BELOW ###
 
 
+

cfg/encoder_randomaccess_vtm.cfg

@@ -153,8 +153,9 @@ AMaxBT                       : 1
 
 # Encoder optimization tools
 AffineAmvrEncOpt             : 1
-
+MmvdDisNum		     : 6
 ### DO NOT ADD ANYTHING BELOW THIS LINE ###
 ### DO NOT DELETE THE EMPTY LINE BELOW ###
 
 
+

doc/software-manual.tex

@@ -1228,6 +1228,11 @@ Specifies the maximum number of merge candidates to use.
 Flag to disable intra PUs in inter slices.
 \\
 
+\Option{MmvdDisNum} &
+%\ShortOption{\None} &
+\Default{6} &
+Specifies the number of MMVD distance entries used from the distance table at encoder.
+\\
 \end{OptionTableNoShorthand}
 
 

source/App/EncoderApp/EncApp.cpp

@@ -279,6 +279,9 @@ void EncApp::xInitLibCfg()
   m_cEncLib.setUseAffineAmvr                                     ( m_AffineAmvr );
   m_cEncLib.setUseAffineAmvrEncOpt                               ( m_AffineAmvrEncOpt );
   m_cEncLib.setDMVR                                              ( m_DMVR );
+#if JVET_N0449_MMVD_SIMP
+  m_cEncLib.setMmvdDisNum                                        (m_MmvdDisNum);
+#endif
   m_cEncLib.setIBCMode                                           ( m_IBCMode );
   m_cEncLib.setIBCLocalSearchRangeX                              ( m_IBCLocalSearchRangeX );
   m_cEncLib.setIBCLocalSearchRangeY                              ( m_IBCLocalSearchRangeY );

source/App/EncoderApp/EncAppCfg.cpp

@@ -874,6 +874,9 @@ bool EncAppCfg::parseCfg( int argc, char* argv[] )
   ("AffineAmvr",                                      m_AffineAmvr,                                     false, "Eanble AMVR for affine inter mode")
   ("AffineAmvrEncOpt",                                m_AffineAmvrEncOpt,                               false, "Enable encoder optimization of affine AMVR")
   ("DMVR",                                            m_DMVR,                                           false, "Decoder-side Motion Vector Refinement")
+#if JVET_N0449_MMVD_SIMP
+  ("MmvdDisNum",                                      m_MmvdDisNum,                                     8,     "Number of MMVD Distance Entries")
+#endif
   ( "IBC",                                            m_IBCMode,                                           0u, "IBCMode (0x1:enabled, 0x0:disabled)  [default: disabled]")
   ( "IBCLocalSearchRangeX",                           m_IBCLocalSearchRangeX,                            128u, "Search range of IBC local search in x direction")
   ( "IBCLocalSearchRangeY",                           m_IBCLocalSearchRangeY,                            128u, "Search range of IBC local search in y direction")
@@ -1973,6 +1976,9 @@ bool EncAppCfg::xCheckParameter()
     xConfirmPara( m_GBiFast, "GBiFast is only allowed with NEXT profile" );
     xConfirmPara( m_Triangle, "Triangle is only allowed with NEXT profile" );
     xConfirmPara(m_DMVR, "DMVR only allowed with NEXT profile");
+#if JVET_N0449_MMVD_SIMP
+    xConfirmPara(m_MmvdDisNum, "Number of distance MMVD entry setting only allowed with NEXT profile");
+#endif
     // ADD_NEW_TOOL : (parameter check) add a check for next tools here
   }
   else
@@ -3159,6 +3165,9 @@ void EncAppCfg::xPrintParameter()
     m_AffineAmvrEncOpt = m_AffineAmvr ? m_AffineAmvrEncOpt : false;
     msg( VERBOSE, "AffineAmvrEncOpt:%d ", m_AffineAmvrEncOpt );
     msg(VERBOSE, "DMVR:%d ", m_DMVR);
+#if JVET_N0449_MMVD_SIMP
+    msg(VERBOSE, "MmvdDisNum:%d ", m_MmvdDisNum);
+#endif
   }
     msg(VERBOSE, "IBC:%d ", m_IBCMode);
   msg( VERBOSE, "HashME:%d ", m_HashME );

source/App/EncoderApp/EncAppCfg.h

@@ -260,7 +260,9 @@ protected:
   bool      m_AffineAmvr;
   bool      m_AffineAmvrEncOpt;
   bool      m_DMVR;
-
+#if JVET_N0449_MMVD_SIMP
+  int       m_MmvdDisNum;
+#endif
   unsigned  m_IBCMode;
   unsigned  m_IBCLocalSearchRangeX;
   unsigned  m_IBCLocalSearchRangeY;

source/Lib/CommonLib/TypeDef.h

@@ -50,6 +50,8 @@
 #include <assert.h>
 #include <cassert>
 
+#define JVET_N0449_MMVD_SIMP                              1 // Configurable number of mmvd distance entries used
+
 #define JVET_N0137_DUALTREE_CHROMA_SIZE                   1
 
 #define JVET_N0335_N0085_MV_ROUNDING                      1  // MV rounding unification

source/Lib/EncoderLib/EncCfg.h

@@ -240,6 +240,9 @@ protected:
   bool      m_HashME;
   bool      m_AffineAmvrEncOpt;
   bool      m_DMVR;
+#if JVET_N0449_MMVD_SIMP
+  int       m_MmvdDisNum;
+#endif
   unsigned  m_IBCMode;
   unsigned  m_IBCLocalSearchRangeX;
   unsigned  m_IBCLocalSearchRangeY;
@@ -762,7 +765,10 @@ public:
   bool      getUseAffineAmvrEncOpt          ()         const { return m_AffineAmvrEncOpt; }
   void      setDMVR                      ( bool b )       { m_DMVR = b; }
   bool      getDMVR                      ()         const { return m_DMVR; }
-
+#if JVET_N0449_MMVD_SIMP
+  void      setMmvdDisNum                   ( int b )        { m_MmvdDisNum = b; }
+  int       getMmvdDisNum                   ()         const { return m_MmvdDisNum; }
+#endif
   void      setIBCMode                      (unsigned n)     { m_IBCMode = n; }
   unsigned  getIBCMode                      ()         const { return m_IBCMode; }
   void      setIBCLocalSearchRangeX         (unsigned n)     { m_IBCLocalSearchRangeX = n; }

source/Lib/EncoderLib/EncCu.cpp

@@ -1999,6 +1999,10 @@ void EncCu::xCheckRDCostMerge2Nx2N( CodingStructure *&tempCS, CodingStructure *&
         int refineStep;
         baseIdx = mmvdMergeCand / MMVD_MAX_REFINE_NUM;
         refineStep = (mmvdMergeCand - (baseIdx * MMVD_MAX_REFINE_NUM)) / 4;
+#if JVET_N0449_MMVD_SIMP
+        if (refineStep >= m_pcEncCfg->getMmvdDisNum())
+          continue;
+#endif
         bitsBaseIdx = baseIdx + 1;
         if (baseIdx == MMVD_BASE_MV_NUM - 1)
         {