AAC/SBR encoder improvements

* AAC-Encoder

  - AAC-ELD core encoder audio quality tuning. Update tuning tables, configure
    bitreservoir size and adapt afterburner iteration value.
     Modified file(s):
        libAACenc/src/aacenc.h
        libAACenc/src/aacenc_lib.cpp
        libAACenc/src/adj_thr.cpp
        libAACenc/src/adj_thr.h
        libAACenc/src/adj_thr_data.h
        libAACenc/src/bandwidth.cpp
        libAACenc/src/pnsparam.cpp
        libAACenc/src/qc_main.cpp

   - Introduze dead zone quantizer for ELD to improve audio quality at certain
     configurations.
     Modified file(s):
        libAACenc/src/aacenc_lib.cpp
        libAACenc/src/adj_thr.cpp
        libAACenc/src/adj_thr.h
        libAACenc/src/qc_data.h
        libAACenc/src/qc_main.cpp
        libAACenc/src/quantize.cpp
        libAACenc/src/quantize.h
        libAACenc/src/sf_estim.cpp
        libAACenc/src/sf_estim.h

   - Revise TNS module to improve ELD audio quality.
   - Use new window function and separate prediction gain according TNS filters.
   - Add missing memory initilization to TNS configuration.
     Modified file(s):
        libAACenc/src/aacenc_lib.cpp
        libAACenc/src/aacenc_tns.cpp
        libAACenc/src/aacenc_tns.h
        libAACenc/src/psy_main.cpp
        libAACenc/src/tns_func.h

* SBR-Encoder

   - Revise frequency resolution calculation and handle differently depending
     on number of envelopes and split frames decision.
   - Add and adjust ELD SBR tuning tables.
     Modified file(s):
        libSBRenc/include/sbr_encoder.h
        libSBRenc/src/bit_sbr.h
        libSBRenc/src/env_est.cpp
        libSBRenc/src/fram_gen.cpp
        libSBRenc/src/fram_gen.h
        libSBRenc/src/mh_det.cpp
        libSBRenc/src/sbr_def.h
        libSBRenc/src/sbr_encoder.cpp
        libSBRenc/src/sbr_rom.cpp
        libSBRenc/src/tran_det.cpp

   - Replace ELD transient detector with fast implementation.
     Modified file(s):
        libSBRenc/src/env_est.cpp
        libSBRenc/src/env_est.h
        libSBRenc/src/fram_gen.cpp
        libSBRenc/src/sbr_def.h
        libSBRenc/src/sbr_encoder.cpp
        libSBRenc/src/tran_det.cpp
        libSBRenc/src/tran_det.h

* FDK-Library
   - Introduce generic compare function in tools library.
     Modified file(s):
        libFDK/include/fixpoint_math.h
        libFDK/src/FDK_core.cpp

* SBR-Encoder

  -  Revise ELD frame splitter to improve bit distribution.
     Modified file(s):
        libSBRenc/include/sbr_encoder.h
        libSBRenc/src/bit_sbr.h
        libSBRenc/src/env_est.cpp
        libSBRenc/src/fram_gen.cpp
        libSBRenc/src/fram_gen.h
        libSBRenc/src/sbr_encoder.cpp
        libSBRenc/src/tran_det.cpp
        libSBRenc/src/tran_det.h

   - Configure amplitude resolution according the tonality of the audio signal.
     Modified file(s):
        libSBRenc/include/sbr_encoder.h
        libSBRenc/src/bit_sbr.h
        libSBRenc/src/env_est.cpp
        libSBRenc/src/nf_est.cpp
        libSBRenc/src/nf_est.h
        libSBRenc/src/sbr_def.h
        libSBRenc/src/sbr_encoder.cpp
        libSBRenc/src/ton_corr.cpp
        libSBRenc/src/ton_corr.h
        libSBRenc/src/tran_det.cpp
        libSBRenc/src/tran_det.h

Change-Id: Ie0672b989a06ee63b50240616b8d1d4b790b6cb2

1 files changed, 14 insertions, 7 deletions

diff --git a/libAACenc/src/psy_main.cpp b/libAACenc/src/psy_main.cpp
index 3cc9438..446c894 100644
--- a/libAACenc/src/psy_main.cpp
+++ b/libAACenc/src/psy_main.cpp
@@ -342,6 +342,7 @@ AAC_ENCODER_ERROR FDKaacEnc_psyMainInit(PSY_INTERNAL *hPsy,
         tnsChannels,
         LONG_WINDOW,
         hPsy->granuleLength,
+        isLowDelay(audioObjectType),
         (syntaxFlags&AC_SBR_PRESENT)?1:0,
        &(hPsy->psyConf[0].tnsConf),
        &hPsy->psyConf[0],
@@ -362,6 +363,7 @@ AAC_ENCODER_ERROR FDKaacEnc_psyMainInit(PSY_INTERNAL *hPsy,
             tnsChannels,
             SHORT_WINDOW,
             hPsy->granuleLength,
+            isLowDelay(audioObjectType),
             (syntaxFlags&AC_SBR_PRESENT)?1:0,
            &hPsy->psyConf[1].tnsConf,
            &hPsy->psyConf[1],
@@ -763,7 +765,8 @@ AAC_ENCODER_ERROR FDKaacEnc_psyMain(INT                 channels,
 
     /* Advance psychoacoustics: Tonality and TNS */
     if (psyStatic[0]->isLFE) {
-        tnsData[0]->dataRaw.Long.subBlockInfo.tnsActive = 0;
+        tnsData[0]->dataRaw.Long.subBlockInfo.tnsActive[HIFILT] = 0;
+        tnsData[0]->dataRaw.Long.subBlockInfo.tnsActive[LOFILT] = 0;
     }
     else
     {
@@ -819,11 +822,15 @@ AAC_ENCODER_ERROR FDKaacEnc_psyMain(INT                 channels,
             for(w = 0; w < nWindows[0]; w++)
             {
                 if (isShortWindow[0])
-                    tnsActive[w] = tnsData[0]->dataRaw.Short.subBlockInfo[w].tnsActive ||
-                    ((channels == 2) ? tnsData[1]->dataRaw.Short.subBlockInfo[w].tnsActive : 0);
+                    tnsActive[w] = tnsData[0]->dataRaw.Short.subBlockInfo[w].tnsActive[HIFILT] ||
+                    tnsData[0]->dataRaw.Short.subBlockInfo[w].tnsActive[LOFILT] ||
+                    tnsData[channels-1]->dataRaw.Short.subBlockInfo[w].tnsActive[HIFILT] ||
+                    tnsData[channels-1]->dataRaw.Short.subBlockInfo[w].tnsActive[LOFILT];
                 else
-                    tnsActive[w] = tnsData[0]->dataRaw.Long.subBlockInfo.tnsActive ||
-                    ((channels == 2) ? tnsData[1]->dataRaw.Long.subBlockInfo.tnsActive : 0);
+                    tnsActive[w] = tnsData[0]->dataRaw.Long.subBlockInfo.tnsActive[HIFILT] ||
+                    tnsData[0]->dataRaw.Long.subBlockInfo.tnsActive[LOFILT] ||
+                    tnsData[channels-1]->dataRaw.Long.subBlockInfo.tnsActive[HIFILT] ||
+                    tnsData[channels-1]->dataRaw.Long.subBlockInfo.tnsActive[LOFILT];
             }
 
             for(ch = 0; ch < channels; ch++) {
@@ -1150,8 +1157,8 @@ AAC_ENCODER_ERROR FDKaacEnc_psyMain(INT                 channels,
                        psyData[ch]->sfbMaxScaleSpec.Long,
                        sfbTonality[ch],
                        psyOutChannel[ch]->tnsInfo.order[0][0],
-                       tnsData[ch]->dataRaw.Long.subBlockInfo.predictionGain,
-                       tnsData[ch]->dataRaw.Long.subBlockInfo.tnsActive,
+                       tnsData[ch]->dataRaw.Long.subBlockInfo.predictionGain[HIFILT],
+                       tnsData[ch]->dataRaw.Long.subBlockInfo.tnsActive[HIFILT],
                        psyOutChannel[ch]->sfbEnergyLdData,
                        psyOutChannel[ch]->noiseNrg );
         } /* !isLFE */