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Hi,
In IPP H.264 decoder in file umc_h264_bitstream_inlines.h there is a macros:
#define RefreshCABACBits(codOffset, pBits, iBits) \ { \ Ipp16u *pRealPointer; \ /* we have to handle the bit pointer very thorougly. */ \ /* this sophisticated logic is used to avoid compilers' warnings. */ \ /* In two words we just select required word by the pointer */ \ pRealPointer = (Ipp16u *) (((Ipp8u *) 0) + \ ((((Ipp8u *) pBits) - (Ipp8u *) 0) ^ 2)); \ codOffset |= *(pRealPointer) << (-iBits); \ pBits += 1; \ iBits += 16; \ }
When input data for decoding are incorrect, here maybe an incorrect value of pBits. And in such a case program is terminated. Are there a way to check is pBits correct? I think this problem maybe solved by additional checks when we allocate memory for data buffer. But how to do this check? What code I need to add?
Thanks.
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