Changeset 327 in SHVCSoftware

Timestamp:

6 Aug 2013, 17:47:35 (11 years ago)

Author:

seregin

Message:

upsampling rounding offset using scalling factors (JCTVC-N0111)

Location:

branches/SHM-3.0-dev/source/Lib/TLibCommon

Files:

• TComUpsampleFilter.cpp (modified) (2 diffs)
• TypeDef.h (modified) (1 diff)

branches/SHM-3.0-dev/source/Lib/TLibCommon/TComUpsampleFilter.cpp

@@ -176 +176 @@
     Int   phaseY = 0;
 
+#if ROUNDING_OFFSET
+    Int   addX = ( ( phaseX * scaleX + 2 ) >> 2 ) + ( 1 << ( shiftX - 5 ) );
+    Int   addY = ( ( phaseY * scaleY + 2 ) >> 2 ) + ( 1 << ( shiftY - 5 ) );
+#else
     Int   addX       = ( ( ( widthBL * phaseX ) << ( shiftX - 2 ) ) + ( widthEL >> 1 ) ) / widthEL + ( 1 << ( shiftX - 5 ) );
     Int   addY       = ( ( ( heightBL * phaseY ) << ( shiftY - 2 ) ) + ( heightEL >> 1 ) ) / heightEL+ ( 1 << ( shiftY - 5 ) );
+#endif
 
     Int   deltaX     = 4 * phaseX;
@@ -340 +345 @@
     phaseY = 1;
 
+#if ROUNDING_OFFSET
+    addX       = ( ( phaseX * scaleX + 2 ) >> 2 ) + ( 1 << ( shiftX - 5 ) );
+    addY       = ( ( phaseY * scaleY + 2 ) >> 2 ) + ( 1 << ( shiftY - 5 ) );
+#else
     addX       = ( ( ( widthBL * phaseX ) << ( shiftX - 2 ) ) + ( widthEL >> 1 ) ) / widthEL + ( 1 << ( shiftX - 5 ) );
     addY       = ( ( ( heightBL * phaseY ) << ( shiftY - 2 ) ) + ( heightEL >> 1 ) ) / heightEL+ ( 1 << ( shiftY - 5 ) );
+#endif
 
     deltaX     = 4 * phaseX;

branches/SHM-3.0-dev/source/Lib/TLibCommon/TypeDef.h

@@ -74 +74 @@
 #define SVC_COL_BLK                      1      ///< get co-located block
 #define SVC_UPSAMPLING                   1      ///< upsampling filters
+#define ROUNDING_OFFSET                  1      ///< JCTVC-N0111: upsampling rounding offset using scalling factors
 
 #define SIMPLIFIED_MV_POS_SCALING        1      ///< M0133/M0449: inter-layer MV scaling and pixel mapping position calculation