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Merge pull request #3404 from vacing/bugfix-sps-d8x8

fix bug of sps->direct_8x8_inference_flag setting

--- a/codec/encoder/core/src/au_set.cpp

+++ b/codec/encoder/core/src/au_set.cpp

@@ -304,7 +304,11 @@

   BsWriteUE (pLocalBitStringAux, pSps->iMbHeight - 1);          // pic_height_in_map_units_minus1

   BsWriteOneBit (pLocalBitStringAux, true/*pSps->bFrameMbsOnlyFlag*/);  // bFrameMbsOnlyFlag

-  BsWriteOneBit (pLocalBitStringAux, 0/*pSps->bDirect8x8InferenceFlag*/);       // direct_8x8_inference_flag

+  uint8_t d8x8 = 0;

+  if (pSps->iLevelIdc >= 30)

+    d8x8 = 1;

+  BsWriteOneBit (pLocalBitStringAux, d8x8/*pSps->bDirect8x8InferenceFlag*/);       // direct_8x8_inference_flag

+

   BsWriteOneBit (pLocalBitStringAux, pSps->bFrameCroppingFlag); // bFrameCroppingFlag

   if (pSps->bFrameCroppingFlag) {

     BsWriteUE (pLocalBitStringAux, pSps->sFrameCrop.iCropLeft);         // frame_crop_left_offset