AAC Decoder: introduce time domain limiter

Introduce time domain limiter. The module is per default enabled for all
  AAC-LC and HE-AAC v1/2 streams. For all ER-AAC-LD and ER-AAC-ELD streams
  the limiter is disabled per default. The feature can be en- or disabled
  via dynamic API parameter. Note that the limiter introduces an additional
  output delay which depends on the module parameters and the streams
  sampling rate.

Bug 9428126

Change-Id: I299a072340b33e2c324facbd347a72c8de3d380e

1 files changed, 7 insertions, 0 deletions

diff --git a/libAACdec/src/aacdecoder.h b/libAACdec/src/aacdecoder.h
index f581054..bcbc040 100644
--- a/libAACdec/src/aacdecoder.h
+++ b/libAACdec/src/aacdecoder.h
@@ -111,6 +111,7 @@ amm-info@iis.fraunhofer.de
 #include "aacdec_drc.h"
 
  #include "pcmutils_lib.h"
+ #include "limiter.h"
 
 
 /* Capabilities flags */
@@ -215,6 +216,12 @@ struct AAC_DECODER_INSTANCE {
   CAncData      ancData;                             /*!< structure to handle ancillary data         */
 
   HANDLE_PCM_DOWNMIX  hPcmUtils;                     /*!< privat data for the PCM utils.             */
+  TDLimiterPtr hLimiter;                             /*!< Handle of time domain limiter.             */
+  UCHAR        limiterEnableUser;                    /*!< The limiter configuration requested by the library user */
+  UCHAR        limiterEnableCurr;                    /*!< The current limiter configuration.         */
+
+  FIXP_DBL     extGain[1];                           /*!< Gain that must be applied to the output signal. */
+  UINT         extGainDelay;                         /*!< Delay that must be accounted for extGain. */
 
 };