From 9bf37cc9712506b2483650c82d3c41152337ef7e Mon Sep 17 00:00:00 2001
From: Dave Burke <daveburke@google.com>
Date: Tue, 17 Apr 2012 09:51:45 -0700
Subject: Fraunhofer AAC codec.

License boilerplate update to follow.

Change-Id: I2810460c11a58b6d148d84673cc031f3685e79b5
---
 libAACenc/src/psy_const.h | 99 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 99 insertions(+)
 create mode 100644 libAACenc/src/psy_const.h

(limited to 'libAACenc/src/psy_const.h')

diff --git a/libAACenc/src/psy_const.h b/libAACenc/src/psy_const.h
new file mode 100644
index 0000000..d9d59d9
--- /dev/null
+++ b/libAACenc/src/psy_const.h
@@ -0,0 +1,99 @@
+/******************************** MPEG Audio Encoder **************************
+
+                     (C) Copyright Fraunhofer IIS (1999)
+                               All Rights Reserved
+
+    Please be advised that this software and/or program delivery is
+    Confidential Information of Fraunhofer and subject to and covered by the
+
+    Fraunhofer IIS Software Evaluation Agreement
+    between Google Inc. and  Fraunhofer
+    effective and in full force since March 1, 2012.
+
+    You may use this software and/or program only under the terms and
+    conditions described in the above mentioned Fraunhofer IIS Software
+    Evaluation Agreement. Any other and/or further use requires a separate agreement.
+
+
+   This software and/or program is protected by copyright law and international
+   treaties. Any reproduction or distribution of this software and/or program,
+   or any portion of it, may result in severe civil and criminal penalties, and
+   will be prosecuted to the maximum extent possible under law.
+
+   $Id$
+   Initial author:       M.Werner
+   contents/description: Global psychoaccoustic constants
+
+******************************************************************************/
+#ifndef _PSYCONST_H
+#define _PSYCONST_H
+
+
+#define TRUE  1
+#define FALSE 0
+
+  #define TRANS_FAC         8  /* encoder short long ratio */
+
+#define FRAME_MAXLEN_SHORT    ((1024)/TRANS_FAC)
+#define FRAME_LEN_SHORT_128   ((1024)/TRANS_FAC)
+#define FRAME_LEN_SHORT_120   (FRAME_LEN_LONG_960/TRANS_FAC)
+
+/* Filterbank type*/
+enum FB_TYPE {
+  FB_LC  = 0,
+  FB_LD  = 1,
+  FB_ELD = 2
+};
+
+/* Block types */
+#define N_BLOCKTYPES 6
+enum
+{
+  LONG_WINDOW = 0,
+  START_WINDOW,
+  SHORT_WINDOW,
+  STOP_WINDOW,
+  _LOWOV_WINDOW, /* Do not use this block type out side of block_switch.cpp */
+  WRONG_WINDOW
+};
+
+/* Window shapes */
+enum
+{
+  SINE_WINDOW = 0,
+  KBD_WINDOW  = 1,
+  LOL_WINDOW = 2 /* Low OverLap window shape for AAC-LD */
+};
+
+/*
+  MS stuff
+*/
+enum
+{
+  SI_MS_MASK_NONE = 0,
+  SI_MS_MASK_SOME = 1,
+  SI_MS_MASK_ALL  = 2
+};
+
+
+  #define MAX_NO_OF_GROUPS   4
+  #define MAX_SFB_LONG       51  /* 51 for a memory optimized implementation, maybe 64 for convenient debugging */
+  #define MAX_SFB_SHORT      15  /* 15 for a memory optimized implementation, maybe 16 for convenient debugging */
+
+#define MAX_SFB         (MAX_SFB_SHORT > MAX_SFB_LONG ? MAX_SFB_SHORT : MAX_SFB_LONG)   /* = 51 */
+#define MAX_GROUPED_SFB (MAX_NO_OF_GROUPS*MAX_SFB_SHORT > MAX_SFB_LONG ? \
+                         MAX_NO_OF_GROUPS*MAX_SFB_SHORT : MAX_SFB_LONG) /* = 60 */
+
+#define MAX_INPUT_BUFFER_SIZE  (2*(1024))   /* 2048 */
+
+
+#define PCM_LEVEL             1.0f
+#define NORM_PCM              (PCM_LEVEL/32768.0f)
+#define NORM_PCM_ENERGY       (NORM_PCM*NORM_PCM)
+#define LOG_NORM_PCM          -15
+
+#define TNS_PREDGAIN_SCALE    (1000)
+
+#define LFE_LOWPASS_LINE      12
+
+#endif /* _PSYCONST_H */
-- 
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