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mono-in-stereo fix

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This commit is contained in:
Christian R. Helmrich 2020-05-03 23:00:28 +02:00
parent 08279e2182
commit c7de6bb97e
1 changed files with 4 additions and 2 deletions
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6
src/lib/exhaleEnc.cpp
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@ -672,7 +672,6 @@ unsigned ExhaleEncoder::psychBitAllocation () // perceptual bit-allocation via s
const unsigned samplingRate = toSamplingRate (m_frequencyIdx);
const unsigned lfeChannelIndex = (m_channelConf >= CCI_6_CH ? __max (5, nChannels - 1) : USAC_MAX_NUM_CHANNELS);
const uint32_t maxSfbLong = (samplingRate < 37566 ? 51 /*32 kHz*/ : brModeAndFsToMaxSfbLong (m_bitRateMode, samplingRate));
const uint32_t reductionFactor = (m_bitRateMode < 3 ? 2 : 3); // for undercoding reduction
const uint64_t scaleSr = (samplingRate < 27713 ? 37 - m_bitRateMode : 37) - (m_bitRateMode > 1 ? nChannels >> 1 : 0);
const uint64_t scaleBr = (m_bitRateMode == 0 ? 32 : scaleSr - eightTimesSqrt256Minus[256 - m_bitRateMode] - __min (3, (m_bitRateMode - 1) >> 1));
uint32_t* sfbStepSizes = (uint32_t*) m_tempIntBuf;
@ -718,6 +717,8 @@ unsigned ExhaleEncoder::psychBitAllocation () // perceptual bit-allocation via s
}
else // SCE or CPE: bandwidth-to-max_sfb mapping, short-window grouping for each channel
{
const uint32_t reductionFactor = (m_bitRateMode < 3 ? 2 : 3) - (coreConfig.stereoConfig >> 3);
if (coreConfig.commonWindow && (coreConfig.stereoMode == 0) && (m_perCorrHCurr[el] > SCHAR_MAX || m_perCorrLCurr[el] > (UCHAR_MAX * 3) / 4))
{
coreConfig.stereoMode = 1;
@ -805,7 +806,7 @@ unsigned ExhaleEncoder::psychBitAllocation () // perceptual bit-allocation via s
coreConfig.tnsData[0], coreConfig.tnsData[1],
numSwbFrame, coreConfig.stereoDataCurr,
m_bitRateMode <= 4, coreConfig.stereoMode > 1,
(coreConfig.stereoConfig >> 1) > 0, (coreConfig.stereoConfig & 1) > 0,
(coreConfig.stereoConfig & 2) > 0, (coreConfig.stereoConfig & 1) > 0,
&sfbStepSizes[m_numSwbShort * NUM_WINDOW_GROUPS * ci],
&sfbStepSizes[m_numSwbShort * NUM_WINDOW_GROUPS * (ci + 1)]);
if (errorValue == 2) // signal M/S with complex prediction
@ -1258,6 +1259,7 @@ unsigned ExhaleEncoder::spectralProcessing () // complete ics_info(), calc TNS
if ((int) s == steAnaStats * -1) coreConfig.stereoConfig = 2; // 2: S>M, pred_dir=1
if (s > (UCHAR_MAX * 3) / 4) coreConfig.stereoMode = 2; // 2: all, ms_mask_present=2
if (s >= UCHAR_MAX) coreConfig.stereoConfig |= 8; // coding of mono-in-stereo signal
}
else if (nrChannels > 1) m_perCorrHCurr[el] = m_perCorrLCurr[el] = 128; // "mid" value