diff options
Diffstat (limited to 'media/libstagefright/codecs/aacenc/src/ms_stereo.c')
| -rw-r--r-- | media/libstagefright/codecs/aacenc/src/ms_stereo.c | 60 |
1 files changed, 30 insertions, 30 deletions
diff --git a/media/libstagefright/codecs/aacenc/src/ms_stereo.c b/media/libstagefright/codecs/aacenc/src/ms_stereo.c index 44d45cc..2e34f14 100644 --- a/media/libstagefright/codecs/aacenc/src/ms_stereo.c +++ b/media/libstagefright/codecs/aacenc/src/ms_stereo.c @@ -30,7 +30,7 @@ * * function name: MsStereoProcessing * description: detect use ms stereo or not -* if ((min(thrLn, thrRn)*min(thrLn, thrRn))/(enMn*enSn)) +* if ((min(thrLn, thrRn)*min(thrLn, thrRn))/(enMn*enSn)) * >= ((thrLn *thrRn)/(enLn*enRn)) then ms stereo * **********************************************************************************/ @@ -51,7 +51,7 @@ void MsStereoProcessing(Word32 *sfbEnergyLeft, const Word16 maxSfbPerGroup, const Word16 *sfbOffset) { Word32 temp; - Word32 sfb,sfboffs, j; + Word32 sfb,sfboffs, j; Word32 msMaskTrueSomewhere = 0; Word32 msMaskFalseSomewhere = 0; @@ -64,12 +64,12 @@ void MsStereoProcessing(Word32 *sfbEnergyLeft, Word32 thrL, thrR, nrgL, nrgR; Word32 idx, shift; - idx = sfb + sfboffs; + idx = sfb + sfboffs; - thrL = sfbThresholdLeft[idx]; - thrR = sfbThresholdRight[idx]; - nrgL = sfbEnergyLeft[idx]; - nrgR = sfbEnergyRight[idx]; + thrL = sfbThresholdLeft[idx]; + thrR = sfbThresholdRight[idx]; + nrgL = sfbEnergyLeft[idx]; + nrgR = sfbEnergyRight[idx]; minThreshold = min(thrL, thrR); @@ -82,8 +82,8 @@ void MsStereoProcessing(Word32 *sfbEnergyLeft, pnlr = fixmul(nrgL, nrgR); - nrgL = sfbEnergyMid[idx]; - nrgR = sfbEnergySide[idx]; + nrgL = sfbEnergyMid[idx]; + nrgR = sfbEnergySide[idx]; nrgL = max(nrgL,minThreshold) + 1; shift = norm_l(nrgL); @@ -97,42 +97,42 @@ void MsStereoProcessing(Word32 *sfbEnergyLeft, temp = (pnlr + 1) / ((pnms >> 8) + 1); - temp = pnms - pnlr; + temp = pnms - pnlr; if( temp > 0 ){ - msMask[idx] = 1; - msMaskTrueSomewhere = 1; + msMask[idx] = 1; + msMaskTrueSomewhere = 1; for (j=sfbOffset[idx]; j<sfbOffset[idx+1]; j++) { Word32 left, right; left = (mdctSpectrumLeft[j] >> 1); right = (mdctSpectrumRight[j] >> 1); - mdctSpectrumLeft[j] = left + right; - mdctSpectrumRight[j] = left - right; + mdctSpectrumLeft[j] = left + right; + mdctSpectrumRight[j] = left - right; } - - sfbThresholdLeft[idx] = minThreshold; - sfbThresholdRight[idx] = minThreshold; - sfbEnergyLeft[idx] = sfbEnergyMid[idx]; - sfbEnergyRight[idx] = sfbEnergySide[idx]; - - sfbSpreadedEnRight[idx] = min(sfbSpreadedEnLeft[idx],sfbSpreadedEnRight[idx]) >> 1; - sfbSpreadedEnLeft[idx] = sfbSpreadedEnRight[idx]; - + + sfbThresholdLeft[idx] = minThreshold; + sfbThresholdRight[idx] = minThreshold; + sfbEnergyLeft[idx] = sfbEnergyMid[idx]; + sfbEnergyRight[idx] = sfbEnergySide[idx]; + + sfbSpreadedEnRight[idx] = min(sfbSpreadedEnLeft[idx],sfbSpreadedEnRight[idx]) >> 1; + sfbSpreadedEnLeft[idx] = sfbSpreadedEnRight[idx]; + } else { - msMask[idx] = 0; - msMaskFalseSomewhere = 1; + msMask[idx] = 0; + msMaskFalseSomewhere = 1; } - } - if ( msMaskTrueSomewhere ) { + } + if ( msMaskTrueSomewhere ) { if(msMaskFalseSomewhere ) { - *msDigest = SI_MS_MASK_SOME; + *msDigest = SI_MS_MASK_SOME; } else { - *msDigest = SI_MS_MASK_ALL; + *msDigest = SI_MS_MASK_ALL; } } else { - *msDigest = SI_MS_MASK_NONE; + *msDigest = SI_MS_MASK_NONE; } } |