Changeset 137 in SHVCSoftware for branches/SHM-2.0-dev/source/Lib/TLibDecoder

Timestamp:

2 May 2013, 08:47:06 (12 years ago)

Author:

mediatek

Message:

M0133/M0449: inter-layer MV scaling and pixel mapping position calculation
Author: Peter Chuang <peter.chuang@…>

File:

• branches/SHM-2.0-dev/source/Lib/TLibDecoder/TDecTop.cpp (modified) (1 diff)

branches/SHM-2.0-dev/source/Lib/TLibDecoder/TDecTop.cpp

@@ -922 +922 @@
   }
 
+#if SIMPLIFIED_MV_POS_SCALING
+  if (m_layerId > 0)
+  {
+    const Window &confBL = pcSlice->getBaseColPic()->getPicYuvRec()->getConformanceWindow();
+    const Window &confEL = pcPic->getPicYuvRec()->getConformanceWindow();
+
+    Int widthBL   = pcSlice->getBaseColPic()->getPicYuvRec()->getWidth () - confBL.getWindowLeftOffset() - confBL.getWindowRightOffset();
+    Int heightBL  = pcSlice->getBaseColPic()->getPicYuvRec()->getHeight() - confBL.getWindowTopOffset() - confBL.getWindowBottomOffset();
+
+    Int widthEL   = pcPic->getPicYuvRec()->getWidth() - confEL.getWindowLeftOffset() - confEL.getWindowRightOffset();
+    Int heightEL  = pcPic->getPicYuvRec()->getHeight() - confEL.getWindowTopOffset() - confEL.getWindowBottomOffset();
+
+    g_mvScalingFactor[m_layerId][0] = Clip3(-4096, 4095, ((widthEL  << 8) + (widthBL  >> 1)) / widthBL);
+    g_mvScalingFactor[m_layerId][1] = Clip3(-4096, 4095, ((heightEL << 8) + (heightBL >> 1)) / heightBL);
+
+    g_posScalingFactor[m_layerId][0] = ((widthBL  << 16) + (widthEL  >> 1)) / widthEL;
+    g_posScalingFactor[m_layerId][1] = ((heightBL << 16) + (heightEL >> 1)) / heightEL;
+  }
+#endif
+
   //  Decode a picture
   m_cGopDecoder.decompressSlice(nalu.m_Bitstream, pcPic);