codes of Q0417: check the constraint on sps_virtual_boundaries_present_flag based

source/Lib/CommonLib/TypeDef.h

@@ -50,6 +50,8 @@
 #include <assert.h>
 #include <cassert>
 
+#define JVET_Q0417_CONSTRAINT_SPS_VB_PRESENT_FLAG         1 //JVET_Q0417: a constraint on the value of sps_virtual_boundaries_present_flag based on res_change_in_clvs_allowed_flag
+
 #define JVET_Q0504_PLT_NON444                             1 // JVET-Q0504: enable palette mode for non 444 color format
 
 #define JVET_Q0089_SLICE_LOSSLESS_CODING_CHROMA_BDPCM     1 // JVET-Q0089: RRC slice-level switch for lossless coding and one SPS flag for luma and chroma BDPCM.

source/Lib/DecoderLib/DecLib.cpp

@@ -1249,7 +1249,9 @@ void DecLib::xActivateParameterSets( const int layerId )
   }
 
   CHECK( !sps->getRprEnabledFlag() && pps->getScalingWindow().getWindowEnabledFlag(), "When ref_pic_resampling_enabled_flag is equal to 0, the value of scaling_window_flag shall be equal to 0." );
-
+#if JVET_Q0417_CONSTRAINT_SPS_VB_PRESENT_FLAG
+  CHECK(sps->getRprEnabledFlag() && sps->getLoopFilterAcrossVirtualBoundariesDisabledFlag(), "when the value of res_change_in_clvs_allowed_flag is equal to 1, the value of sps_virtual_boundaries_present_flag shall be equal to 0");
+#endif
   if( sps->getCTUSize() + 2 * ( 1 << sps->getLog2MinCodingBlockSize() ) > pps->getPicWidthInLumaSamples() )
   {
     CHECK( sps->getWrapAroundEnabledFlag(), "Wraparound shall be disabled when the value of ( CtbSizeY / MinCbSizeY + 1) is less than or equal to ( pic_width_in_luma_samples / MinCbSizeY - 1 )" );