diff options
Diffstat (limited to 'libAACdec/src/aacdec_drc.cpp')
| -rw-r--r-- | libAACdec/src/aacdec_drc.cpp | 57 |
1 files changed, 47 insertions, 10 deletions
diff --git a/libAACdec/src/aacdec_drc.cpp b/libAACdec/src/aacdec_drc.cpp index ebc6975..2666454 100644 --- a/libAACdec/src/aacdec_drc.cpp +++ b/libAACdec/src/aacdec_drc.cpp @@ -2,7 +2,7 @@ /* ----------------------------------------------------------------------------------------------------------- Software License for The Fraunhofer FDK AAC Codec Library for Android -© Copyright 1995 - 2012 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. +© Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. All rights reserved. 1. INTRODUCTION @@ -135,10 +135,13 @@ void aacDecoder_drcInit ( /* init params */ pParams = &self->params; pParams->bsDelayEnable = 0; - pParams->cut = FL2FXCONST_DBL(0.0f); - pParams->boost = FL2FXCONST_DBL(0.0f); + pParams->cut = FL2FXCONST_DBL(0.0f); + pParams->usrCut = FL2FXCONST_DBL(0.0f); + pParams->boost = FL2FXCONST_DBL(0.0f); + pParams->usrBoost = FL2FXCONST_DBL(0.0f); pParams->targetRefLevel = AACDEC_DRC_DEFAULT_REF_LEVEL; pParams->expiryFrame = AACDEC_DRC_DFLT_EXPIRY_FRAMES; + pParams->applyHeavyCompression = 0; /* initial program ref level = target ref level */ self->progRefLevel = pParams->targetRefLevel; @@ -193,7 +196,9 @@ AAC_DECODER_ERROR aacDecoder_drcSetParam ( if (self == NULL) { return AAC_DEC_INVALID_HANDLE; } - self->params.cut = (FIXP_DBL)((INT)(DRC_PARAM_QUANT_STEP>>DRC_PARAM_SCALE) * (INT)value); + self->params.usrCut = (FIXP_DBL)((INT)(DRC_PARAM_QUANT_STEP>>DRC_PARAM_SCALE) * (INT)value); + if (self->params.applyHeavyCompression == 0) + self->params.cut = self->params.usrCut; break; case DRC_BOOST_SCALE: /* set boost factor */ @@ -204,7 +209,9 @@ AAC_DECODER_ERROR aacDecoder_drcSetParam ( if (self == NULL) { return AAC_DEC_INVALID_HANDLE; } - self->params.boost = (FIXP_DBL)((INT)(DRC_PARAM_QUANT_STEP>>DRC_PARAM_SCALE) * (INT)value); + self->params.usrBoost = (FIXP_DBL)((INT)(DRC_PARAM_QUANT_STEP>>DRC_PARAM_SCALE) * (INT)value); + if (self->params.applyHeavyCompression == 0) + self->params.boost = self->params.usrBoost; break; case TARGET_REF_LEVEL: if ( value > MAX_REFERENCE_LEVEL @@ -220,9 +227,11 @@ AAC_DECODER_ERROR aacDecoder_drcSetParam ( else { /* ref_level must be between 0 and MAX_REFERENCE_LEVEL, inclusive */ self->digitalNorm = 1; - self->params.targetRefLevel = value; - self->progRefLevel = (SCHAR)value; /* Set the program reference level equal to the target - level according to 4.5.2.7.3 of ISO/IEC 14496-3. */ + if (self->params.targetRefLevel != (SCHAR)value) { + self->params.targetRefLevel = (SCHAR)value; + self->progRefLevel = (SCHAR)value; /* Always set the program reference level equal to the + target level according to 4.5.2.7.3 of ISO/IEC 14496-3. */ + } } break; case APPLY_HEAVY_COMPRESSION: @@ -232,7 +241,19 @@ AAC_DECODER_ERROR aacDecoder_drcSetParam ( if (self == NULL) { return AAC_DEC_INVALID_HANDLE; } - self->params.applyHeavyCompression = (UCHAR)value; + if (self->params.applyHeavyCompression != (UCHAR)value) { + if (value == 1) { + /* Disable scaling of DRC values by setting the max values */ + self->params.boost = FL2FXCONST_DBL(1.0f/(float)(1<<DRC_PARAM_SCALE)); + self->params.cut = FL2FXCONST_DBL(1.0f/(float)(1<<DRC_PARAM_SCALE)); + } else { + /* Restore the user params */ + self->params.boost = self->params.usrBoost; + self->params.cut = self->params.usrCut; + } + /* Store new parameter value */ + self->params.applyHeavyCompression = (UCHAR)value; + } break; case DRC_BS_DELAY: if (value < 0 || value > 1) { @@ -473,7 +494,7 @@ static int aacDecoder_drcParse ( } } else { - pDrcBs->channelData.bandTop[0] = 255; + pDrcBs->channelData.bandTop[0] = (1024 >> 2) - 1; /* ... comprising the whole spectrum. */; } pDrcBs->channelData.numBands = numBands; @@ -627,10 +648,17 @@ static int aacDecoder_drcExtractAndMap ( { CDrcPayload threadBs[MAX_DRC_THREADS]; CDrcPayload *validThreadBs[MAX_DRC_THREADS]; + CDrcParams *pParams; UINT backupBsPosition; int i, thread, validThreads = 0; int numExcludedChns[MAX_DRC_THREADS]; + FDK_ASSERT(self != NULL); + FDK_ASSERT(hBs != NULL); + FDK_ASSERT(pAacDecoderStaticChannelInfo != NULL); + + pParams = &self->params; + self->numThreads = 0; backupBsPosition = FDKgetValidBits(hBs); @@ -752,6 +780,7 @@ static int aacDecoder_drcExtractAndMap ( */ if (pThreadBs->progRefLevel >= 0) { self->progRefLevel = pThreadBs->progRefLevel; + self->prlExpiryCount = 0; /* Got a new value -> Reset counter */ } /* SCE, CPE and LFE */ @@ -769,6 +798,14 @@ static int aacDecoder_drcExtractAndMap ( /* CCEs not supported by now */ } + /* Increment and check expiry counter for the program reference level: */ + if ( (pParams->expiryFrame > 0) + && (self->prlExpiryCount++ > pParams->expiryFrame) ) + { /* The program reference level is too old, so set it back to the target level. */ + self->progRefLevel = pParams->targetRefLevel; + self->prlExpiryCount = 0; + } + return 0; } |