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clean DTX and RC

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This commit is contained in:
Christian R. Helmrich
2021-06-28 23:00:00 +02:00
parent b11042a0f0
commit 057bb87e64
7 changed files with 50 additions and 37 deletions
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9
src/lib/bitAllocation.cpp
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@ -101,6 +101,15 @@ void BitAllocator::getChAverageTempFlat (uint8_t meanTempFlatInCh[USAC_MAX_NUM_C
memcpy (meanTempFlatInCh, m_avgTempFlat, nChannels * sizeof (uint8_t));
}
uint16_t BitAllocator::getRateCtrlFac (const int32_t rateRatio, const unsigned samplingRate, const uint32_t specFlatness)
{
const uint32_t brRatio = __max (1 << 15, __min (USHRT_MAX, rateRatio * (36 - 9 * m_rateIndex)));
const uint16_t mSfmSqr = (m_rateIndex < 2 && samplingRate >= 27713 ? (specFlatness * specFlatness) >> m_rateIndex : 0);
const uint16_t mSfmFac = 256 - (((32 + m_rateIndex) * (specFlatness << 4) - mSfmSqr + (1 << 9)) >> 10);
return uint16_t ((brRatio * mSfmFac + (1 << 7)) >> 8);
}
uint8_t BitAllocator::getScaleFac (const uint32_t sfbStepSize, const int32_t* const sfbSignal, const uint8_t sfbWidth,
const uint32_t sfbRmsValue)
{