AAC Encoder low delay quality

* AAC-Encoder

   - Revise bit distribution for lowdelay configuration to improve encoder
     audio quality.
   - Adjust lowdelay bitreservoir for low bitreservoir configuration.
     Modified file(s):
        libAACenc\src\aacEnc_ram.cpp
        libAACenc\src\aacenc.cpp
        libAACenc\src\aacenc_lib.cpp
        libAACenc\src\aacenc_tns.cpp
        libAACenc\src\adj_thr.cpp
        libAACenc\src\adj_thr.h
        libAACenc\src\block_switch.cpp
        libAACenc\src\block_switch.h
        libAACenc\src\interface.h
        libAACenc\src\psy_main.cpp
        libAACenc\src\qc_data.h
        libAACenc\src\qc_main.cpp

* FDK-Library

   - Increase the accuracy in CalcInvLdData() calculation which improves the
     encoder audio quality.
     Modified file(s):
        libFDK\src\fixpoint_math.cpp

Bug 9428126

Change-Id: I302d7f4c3aeccf79e1b85f20e18a31e6e2b10544

1 files changed, 6 insertions, 0 deletions

diff --git a/libAACenc/src/interface.h b/libAACenc/src/interface.h
index 177ddbf..2ec1852 100644
--- a/libAACenc/src/interface.h
+++ b/libAACenc/src/interface.h
@@ -92,6 +92,7 @@ amm-info@iis.fraunhofer.de
 #define _INTERFACE_H
 
 #include "common_fix.h"
+#include "FDK_audio.h"
 
 #include "psy_data.h"
 #include "aacenc_tns.h"
@@ -160,4 +161,9 @@ typedef struct {
 
 }PSY_OUT;
 
+inline int isLowDelay( AUDIO_OBJECT_TYPE aot )
+{
+  return (aot==AOT_ER_AAC_LD || aot==AOT_ER_AAC_ELD);
+}
+
 #endif /* _INTERFACE_H */