diff options
Diffstat (limited to 'fdk-aac/libAACdec/src/conceal.cpp')
| -rw-r--r-- | fdk-aac/libAACdec/src/conceal.cpp | 57 |
1 files changed, 29 insertions, 28 deletions
diff --git a/fdk-aac/libAACdec/src/conceal.cpp b/fdk-aac/libAACdec/src/conceal.cpp index 5895cb8..0939bb5 100644 --- a/fdk-aac/libAACdec/src/conceal.cpp +++ b/fdk-aac/libAACdec/src/conceal.cpp @@ -1,7 +1,7 @@ /* ----------------------------------------------------------------------------- Software License for The Fraunhofer FDK AAC Codec Library for Android -© Copyright 1995 - 2018 Fraunhofer-Gesellschaft zur Förderung der angewandten +© Copyright 1995 - 2019 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. All rights reserved. 1. INTRODUCTION @@ -226,7 +226,7 @@ static void CConcealment_ApplyRandomSign(int iRandomPhase, FIXP_DBL *spec, /* TimeDomainFading */ static void CConcealment_TDFadePcmAtt(int start, int len, FIXP_DBL fadeStart, - FIXP_DBL fadeStop, FIXP_PCM *pcmdata); + FIXP_DBL fadeStop, PCM_DEC *pcmdata); static void CConcealment_TDFadeFillFadingStations(FIXP_DBL *fadingStations, int *fadingSteps, FIXP_DBL fadeStop, @@ -242,7 +242,9 @@ static int CConcealment_ApplyFadeOut( static int CConcealment_TDNoise_Random(ULONG *seed); static void CConcealment_TDNoise_Apply(CConcealmentInfo *const pConcealmentInfo, - const int len, FIXP_PCM *const pcmdata); + const int len, + const INT aacOutDataHeadroom, + PCM_DEC *const pcmdata); static BLOCK_TYPE CConcealment_GetWinSeq(int prevWinSeq) { BLOCK_TYPE newWinSeq = BLOCK_LONG; @@ -1228,7 +1230,6 @@ static void CConcealment_InterpolateBuffer(FIXP_DBL *spectrum, int sfb, line = 0; int fac_shift; int fac_mod; - FIXP_DBL accu; for (sfb = 0; sfb < sfbCnt; sfb++) { fac_shift = @@ -1236,15 +1237,11 @@ static void CConcealment_InterpolateBuffer(FIXP_DBL *spectrum, fac_mod = fac_shift & 3; fac_shift = (fac_shift >> 2) + 1; fac_shift += *pSpecScalePrv - fixMax(*pSpecScalePrv, *pSpecScaleAct); + fac_shift = fMax(fMin(fac_shift, DFRACT_BITS - 1), -(DFRACT_BITS - 1)); for (; line < pSfbOffset[sfb + 1]; line++) { - accu = fMult(*(spectrum + line), facMod4Table[fac_mod]); - if (fac_shift < 0) { - accu >>= -fac_shift; - } else { - accu <<= fac_shift; - } - *(spectrum + line) = accu; + FIXP_DBL accu = fMult(*(spectrum + line), facMod4Table[fac_mod]); + *(spectrum + line) = scaleValue(accu, fac_shift); } } *pSpecScaleOut = fixMax(*pSpecScalePrv, *pSpecScaleAct); @@ -1618,7 +1615,7 @@ static void CConcealment_ApplyRandomSign(int randomPhase, FIXP_DBL *spec, } if (packedSign & 0x1) { - spec[i] = -spec[i]; + spec[i] = -fMax(spec[i], (FIXP_DBL)(MINVAL_DBL + 1)); } packedSign >>= 1; @@ -1849,7 +1846,7 @@ Target fading level is determined by fading index cntFadeFrames. INT CConcealment_TDFading( int len, CAacDecoderStaticChannelInfo **ppAacDecoderStaticChannelInfo, - FIXP_PCM *pcmdata, FIXP_PCM *pcmdata_1) { + const INT aacOutDataHeadroom, PCM_DEC *pcmdata, PCM_DEC *pcmdata_1) { /* Do the fading in Time domain based on concealment states and core mode */ @@ -1962,7 +1959,8 @@ INT CConcealment_TDFading( start += len; } } - CConcealment_TDNoise_Apply(pConcealmentInfo, len, pcmdata); + CConcealment_TDNoise_Apply(pConcealmentInfo, len, aacOutDataHeadroom, + pcmdata); /* Save end-of-frame attenuation and fading type */ pConcealmentInfo->lastFadingType = fadingType; @@ -1974,12 +1972,11 @@ INT CConcealment_TDFading( /* attenuate pcmdata in Time Domain Fading process */ static void CConcealment_TDFadePcmAtt(int start, int len, FIXP_DBL fadeStart, - FIXP_DBL fadeStop, FIXP_PCM *pcmdata) { + FIXP_DBL fadeStop, PCM_DEC *pcmdata) { int i; FIXP_DBL dStep; FIXP_DBL dGain; FIXP_DBL dGain_apply; - int bitshift = (DFRACT_BITS - SAMPLE_BITS); /* set start energy */ dGain = fadeStart; @@ -1992,7 +1989,7 @@ static void CConcealment_TDFadePcmAtt(int start, int len, FIXP_DBL fadeStart, */ dGain_apply = fMax((FIXP_DBL)0, dGain); /* finally, attenuate samples */ - pcmdata[i] = (FIXP_PCM)((fMult(pcmdata[i], (dGain_apply))) >> bitshift); + pcmdata[i] = FIXP_DBL2PCM_DEC(fMult(pcmdata[i], dGain_apply)); } } @@ -2055,9 +2052,11 @@ static int CConcealment_TDNoise_Random(ULONG *seed) { } static void CConcealment_TDNoise_Apply(CConcealmentInfo *const pConcealmentInfo, - const int len, FIXP_PCM *const pcmdata) { - FIXP_PCM *states = pConcealmentInfo->TDNoiseStates; - FIXP_PCM noiseVal; + const int len, + const INT aacOutDataHeadroom, + PCM_DEC *const pcmdata) { + PCM_DEC *states = pConcealmentInfo->TDNoiseStates; + PCM_DEC noiseVal; FIXP_DBL noiseValLong; FIXP_SGL *coef = pConcealmentInfo->TDNoiseCoef; FIXP_DBL TDNoiseAtt; @@ -2075,18 +2074,20 @@ static void CConcealment_TDNoise_Apply(CConcealmentInfo *const pConcealmentInfo, /* create filtered noise */ states[2] = states[1]; states[1] = states[0]; - states[0] = ((FIXP_PCM)CConcealment_TDNoise_Random(&seed)); + states[0] = + FIXP_DBL2PCM_DEC((FIXP_DBL)CConcealment_TDNoise_Random(&seed)); noiseValLong = fMult(states[0], coef[0]) + fMult(states[1], coef[1]) + fMult(states[2], coef[2]); - noiseVal = FX_DBL2FX_PCM(fMult(noiseValLong, TDNoiseAtt)); + noiseVal = FIXP_DBL2PCM_DEC(fMult(noiseValLong, TDNoiseAtt) >> + aacOutDataHeadroom); /* add filtered noise - check for clipping, before */ - if (noiseVal > (FIXP_PCM)0 && - pcmdata[ii] > (FIXP_PCM)MAXVAL_FIXP_PCM - noiseVal) { - noiseVal = noiseVal * (FIXP_PCM)-1; - } else if (noiseVal < (FIXP_PCM)0 && - pcmdata[ii] < (FIXP_PCM)MINVAL_FIXP_PCM - noiseVal) { - noiseVal = noiseVal * (FIXP_PCM)-1; + if (noiseVal > (PCM_DEC)0 && + pcmdata[ii] > (PCM_DEC)MAXVAL_PCM_DEC - noiseVal) { + noiseVal = noiseVal * (PCM_DEC)-1; + } else if (noiseVal < (PCM_DEC)0 && + pcmdata[ii] < (PCM_DEC)MINVAL_PCM_DEC - noiseVal) { + noiseVal = noiseVal * (PCM_DEC)-1; } pcmdata[ii] += noiseVal; |