diff options
Diffstat (limited to 'libAACenc/src/intensity.cpp')
| -rw-r--r-- | libAACenc/src/intensity.cpp | 21 |
1 files changed, 14 insertions, 7 deletions
diff --git a/libAACenc/src/intensity.cpp b/libAACenc/src/intensity.cpp index 8cb1b45..0944fa3 100644 --- a/libAACenc/src/intensity.cpp +++ b/libAACenc/src/intensity.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 @@ -661,6 +661,7 @@ void FDKaacEnc_IntensityStereoProcessing( for (sfboffs = 0; sfboffs < maxSfbPerGroup; sfboffs++) { INT sL, sR; FIXP_DBL inv_n; + INT mdct_spec_sf = MDCT_SPEC_SF; msMask[sfb + sfboffs] = 0; if (isMask[sfb + sfboffs] == 0) { @@ -682,6 +683,12 @@ void FDKaacEnc_IntensityStereoProcessing( } } + if (sfbOffset[sfb + sfboffs + 1] - sfbOffset[sfb + sfboffs] > + 1 << mdct_spec_sf) { + mdct_spec_sf++; /* This is for rare cases where the number of bins in a + scale factor band is > 64 */ + } + inv_n = GetInvInt( (sfbOffset[sfb + sfboffs + 1] - sfbOffset[sfb + sfboffs]) >> 1); // scaled with 2 to compensate fMultDiv2() in subsequent loop @@ -707,11 +714,11 @@ void FDKaacEnc_IntensityStereoProcessing( j++) { d = ((mdctSpectrumLeft[j] << s0) >> 1) - ((mdctSpectrumRight[j] << s0) >> 1); - ed += fMultDiv2(d, d) >> (MDCT_SPEC_SF - 1); + ed += fMultDiv2(d, d) >> (mdct_spec_sf - 1); } msMask[sfb + sfboffs] = 1; tmp = fDivNorm(sfbEnergyLeft[sfb + sfboffs], ed, &s1); - s2 = (s1) + (2 * s0) - 2 - MDCT_SPEC_SF; + s2 = (s1) + (2 * s0) - 2 - mdct_spec_sf; if (s2 & 1) { tmp = tmp >> 1; s2 = s2 + 1; @@ -747,13 +754,13 @@ void FDKaacEnc_IntensityStereoProcessing( j++) { s = ((mdctSpectrumLeft[j] << s0) >> 1) + ((mdctSpectrumRight[j] << s0) >> 1); - es = fAddSaturate(es, fMultDiv2(s, s) >> - (MDCT_SPEC_SF - - 1)); // scaled 2*(mdctScale - s0 + 1) + MDCT_SPEC_SF + es += fMultDiv2(s, s) >> + (mdct_spec_sf - + 1); // scaled 2*(mdctScale - s0 + 1) + mdct_spec_sf } msMask[sfb + sfboffs] = 0; tmp = fDivNorm(sfbEnergyLeft[sfb + sfboffs], es, &s1); - s2 = (s1) + (2 * s0) - 2 - MDCT_SPEC_SF; + s2 = (s1) + (2 * s0) - 2 - mdct_spec_sf; if (s2 & 1) { tmp = tmp >> 1; s2 = s2 + 1; |