diff options
Diffstat (limited to 'libAACdec')
| -rw-r--r-- | libAACdec/src/aacdecoder_lib.cpp | 2 | ||||
| -rw-r--r-- | libAACdec/src/block.cpp | 12 | ||||
| -rw-r--r-- | libAACdec/src/usacdec_lpd.cpp | 3 |
3 files changed, 9 insertions, 8 deletions
diff --git a/libAACdec/src/aacdecoder_lib.cpp b/libAACdec/src/aacdecoder_lib.cpp index ea52bb5..b528ef1 100644 --- a/libAACdec/src/aacdecoder_lib.cpp +++ b/libAACdec/src/aacdecoder_lib.cpp @@ -1882,7 +1882,7 @@ aacDecoder_DecodeFrame(HANDLE_AACDECODER self, INT_PCM *pTimeData_extern, } /* USAC DASH IPF flushing possible end */ if (accessUnit < numPrerollAU) { - FDKpushBack(hBsAu, auStartAnchor - FDKgetValidBits(hBsAu)); + FDKpushBack(hBsAu, auStartAnchor - (INT)FDKgetValidBits(hBsAu)); } else { if ((self->buildUpStatus == AACDEC_RSV60_BUILD_UP_ON) || (self->buildUpStatus == AACDEC_RSV60_BUILD_UP_ON_IN_BAND) || diff --git a/libAACdec/src/block.cpp b/libAACdec/src/block.cpp index 7d2a4b9..b3d09a6 100644 --- a/libAACdec/src/block.cpp +++ b/libAACdec/src/block.cpp @@ -127,9 +127,11 @@ amm-info@iis.fraunhofer.de The function reads the escape sequence from the bitstream, if the absolute value of the quantized coefficient has the value 16. - A limitation is implemented to maximal 31 bits to prevent endless loops. - If it strikes, MAX_QUANTIZED_VALUE + 1 is returned, independent of the sign of - parameter q. + A limitation is implemented to maximal 21 bits according to + ISO/IEC 14496-3:2009(E) 4.6.3.3. + This limits the escape prefix to a maximum of eight 1's. + If more than eight 1's are read, MAX_QUANTIZED_VALUE + 1 is + returned, independent of the sign of parameter q. \return quantized coefficient */ @@ -139,11 +141,11 @@ LONG CBlock_GetEscape(HANDLE_FDK_BITSTREAM bs, /*!< pointer to bitstream */ if (fAbs(q) != 16) return (q); LONG i, off; - for (i = 4; i < 32; i++) { + for (i = 4; i < 13; i++) { if (FDKreadBit(bs) == 0) break; } - if (i == 32) return (MAX_QUANTIZED_VALUE + 1); + if (i == 13) return (MAX_QUANTIZED_VALUE + 1); off = FDKreadBits(bs, i); i = off + (1 << i); diff --git a/libAACdec/src/usacdec_lpd.cpp b/libAACdec/src/usacdec_lpd.cpp index 22069a6..f53e39f 100644 --- a/libAACdec/src/usacdec_lpd.cpp +++ b/libAACdec/src/usacdec_lpd.cpp @@ -1221,8 +1221,7 @@ AAC_DECODER_ERROR CLpdChannelStream_Read( (INT)(samplingRate * PIT_MIN_12k8 + (FSCALE_DENOM / 2)) / FSCALE_DENOM - (INT)PIT_MIN_12k8; - if (pSamplingRateInfo->samplingRate > - FAC_FSCALE_MAX /* maximum allowed core sampling frequency */) { + if ((samplingRate < 6000) || (samplingRate > 24000)) { error = AAC_DEC_PARSE_ERROR; goto bail; } |