shithub: openh264

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add slice_type check for num_ref_frame

--- a/codec/decoder/core/src/decoder_core.cpp

+++ b/codec/decoder/core/src/decoder_core.cpp

@@ -791,6 +791,13 @@

   pSliceHeadExt->pSubsetSps = pSubsetSps;

+  if (pSps->iNumRefFrames == 0) {

+    if ((uiSliceType != I_SLICE) && (uiSliceType != SI_SLICE)) {

+      WelsLog (pLogCtx, WELS_LOG_WARNING, "slice_type (%d) not supported for num_ref_frames = 0.", uiSliceType);

+      return GENERATE_ERROR_NO (ERR_LEVEL_SLICE_HEADER, ERR_INFO_INVALID_SLICE_TYPE);

+    }

+  }

+

   bIdrFlag = (!kbExtensionFlag && eNalType == NAL_UNIT_CODED_SLICE_IDR) || (kbExtensionFlag && pNalHeaderExt->bIdrFlag);

   pSliceHead->bIdrFlag = bIdrFlag;