From 9744e41c40598c6a0b74440f3b5be63f9f3708a5 Mon Sep 17 00:00:00 2001 From: Fraunhofer IIS FDK Date: Fri, 8 Jun 2018 18:03:16 +0200 Subject: Prevent bit buffer counter overflow. While long-term test we discovered a bit counter overflow in the bit buffer. The bit buffer state was only used by HCR and RVLC tool and can easily be substituted with FDKgetValidBits() call. The following patch completely removes the bit counter and all its obsolete functions. Bug: 112662184 Test: atest DecoderTestXheAac ; atest DecoderTestAacDrc Change-Id: Icee0519d26a2aa62367d2dece59cd3d60ffcade7 (cherry picked from commit 15292f7e9620caf9e8df26a62efc2a2891ea822e) --- libFDK/include/FDK_bitstream.h | 46 ------------------------------------------ 1 file changed, 46 deletions(-) (limited to 'libFDK/include/FDK_bitstream.h') diff --git a/libFDK/include/FDK_bitstream.h b/libFDK/include/FDK_bitstream.h index 49eeeaf..f799026 100644 --- a/libFDK/include/FDK_bitstream.h +++ b/libFDK/include/FDK_bitstream.h @@ -480,21 +480,6 @@ FDK_INLINE void FDKsyncCacheBwd(HANDLE_FDK_BITSTREAM hBitStream) { hBitStream->CacheWord = 0; } -/** - * \brief Byte Alignment Function. - * This function performs the byte_alignment() syntactic function on the - * input stream, i.e. some bits will be discarded/padded so that the next bits - * to be read/written will be aligned on a byte boundary with respect to - * the bit position 0. - * - * \param hBitStream HANDLE_FDK_BITSTREAM handle - * \return void - */ -FDK_INLINE void FDKbyteAlign(HANDLE_FDK_BITSTREAM hBitStream) { - FDKsyncCache(hBitStream); - FDK_byteAlign(&hBitStream->hBitBuf, (UCHAR)hBitStream->ConfigCache); -} - /** * \brief Byte Alignment Function with anchor * This function performs the byte_alignment() syntactic function on the @@ -603,37 +588,6 @@ FDK_INLINE INT FDKgetFreeBits(HANDLE_FDK_BITSTREAM hBitStream) { return FDK_getFreeBits(&hBitStream->hBitBuf); } -/** - * \brief reset bitcounter in bitBuffer to zero. - * \param hBitStream HANDLE_FDK_BITSTREAM handle - * \return void - */ -FDK_INLINE void FDKresetBitCnt(HANDLE_FDK_BITSTREAM hBitStream) { - FDKsyncCache(hBitStream); - FDK_setBitCnt(&hBitStream->hBitBuf, 0); -} - -/** - * \brief set bitcoutner in bitBuffer to given value. - * \param hBitStream HANDLE_FDK_BITSTREAM handle - * \param value new value to be assigned to the bit counter - * \return void - */ -FDK_INLINE void FDKsetBitCnt(HANDLE_FDK_BITSTREAM hBitStream, UINT value) { - FDKsyncCache(hBitStream); - FDK_setBitCnt(&hBitStream->hBitBuf, value); -} - -/** - * \brief get bitcounter state from bitBuffer. - * \param hBitStream HANDLE_FDK_BITSTREAM handle - * \return current bit counter value - */ -FDK_INLINE INT FDKgetBitCnt(HANDLE_FDK_BITSTREAM hBitStream) { - FDKsyncCache(hBitStream); - return FDK_getBitCnt(&hBitStream->hBitBuf); -} - /** * \brief Fill the BitBuffer with a number of input bytes from external source. * The bytesValid variable returns the number of ramaining valid bytes in -- cgit v1.2.3