shithub: openh264

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[Processing] Clear LSB before rounding up dyadic downsample width

--- a/codec/processing/src/downsample/downsample.cpp

+++ b/codec/processing/src/downsample/downsample.cpp

@@ -275,12 +275,12 @@

   if ((iSrcStride & 31) == 0) {

     assert ((iDstStride & 15) == 0);

     m_pfDownsample.pfHalfAverageWidthx32 (pDst, iDstStride,

-        pSrc, iSrcStride, WELS_ALIGN (iSrcWidth, 32), iSrcHeight);

+        pSrc, iSrcStride, WELS_ALIGN (iSrcWidth & ~1, 32), iSrcHeight);

   } else {

     assert ((iSrcStride & 15) == 0);

     assert ((iDstStride &  7) == 0);

     m_pfDownsample.pfHalfAverageWidthx16 (pDst, iDstStride,

-        pSrc, iSrcStride, WELS_ALIGN (iSrcWidth, 16), iSrcHeight);

+        pSrc, iSrcStride, WELS_ALIGN (iSrcWidth & ~1, 16), iSrcHeight);

   }

 }