Fraunhofer AAC codec.

License boilerplate update to follow.

Change-Id: I2810460c11a58b6d148d84673cc031f3685e79b5

1 files changed, 228 insertions, 0 deletions

diff --git a/libSBRenc/src/sbr_def.h b/libSBRenc/src/sbr_def.h
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+++ b/libSBRenc/src/sbr_def.h
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+/****************************************************************************
+
+                     (C) Copyright Fraunhofer IIS (2004)
+                               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.
+
+ $Id$
+
+*******************************************************************************/
+/*!
+  \file
+  \brief  SBR main definitions $Revision: 36847 $
+*/
+#ifndef __SBR_DEF_H
+#define __SBR_DEF_H
+
+#include "common_fix.h"
+
+#define noError 0
+#define HANDLE_ERROR_INFO INT
+#define ERROR(a,b) 1
+#define handBack
+
+/* #define SBR_ENV_STATISTICS_BITRATE */
+#undef SBR_ENV_STATISTICS_BITRATE
+
+/* #define SBR_ENV_STATISTICS */
+#undef SBR_ENV_STATISTICS
+
+/* #define SBR_PAYLOAD_MONITOR */
+#undef SBR_PAYLOAD_MONITOR
+
+#define SWAP(a,b)                               tempr=a, a=b, b=tempr
+#define TRUE  1
+#define FALSE 0
+
+
+/* Constants */
+#define EPS                                     1e-12
+#define LOG2                                    0.69314718056f  /* natural logarithm of 2 */
+#define ILOG2                                   1.442695041f    /* 1/LOG2 */
+#define RELAXATION_FLOAT                        (1e-6f)
+#define RELAXATION                              (FL2FXCONST_DBL(RELAXATION_FLOAT))
+#define RELAXATION_FRACT                        (FL2FXCONST_DBL(0.524288f))     /* 0.524288f is fractional part of RELAXATION */
+#define RELAXATION_SHIFT                        (19)
+#define RELAXATION_LD64                         (FL2FXCONST_DBL(0.31143075889f))/* (ld64(RELAXATION) */
+
+/************  Definitions ***************/
+#define SBR_COMP_MODE_DELTA                     0
+#define SBR_COMP_MODE_CTS                       1
+
+#define MAX_NUM_CHANNELS                        2
+
+#define MAX_NOISE_ENVELOPES                     2
+#define MAX_NUM_NOISE_COEFFS                    5
+#define MAX_NUM_NOISE_VALUES                    (MAX_NUM_NOISE_COEFFS*MAX_NOISE_ENVELOPES)
+
+#define MAX_NUM_ENVELOPE_VALUES                 (MAX_ENVELOPES * MAX_FREQ_COEFFS)
+#define MAX_ENVELOPES                           5
+#define MAX_FREQ_COEFFS                         48
+
+#define MAX_FREQ_COEFFS_FS44100                 35
+#define MAX_FREQ_COEFFS_FS48000                 32
+
+
+#define QMF_CHANNELS                            64
+#define QMF_FILTER_LENGTH                      640
+#define QMF_MAX_TIME_SLOTS                      32
+#define NO_OF_ESTIMATES_LC                      4
+#define NO_OF_ESTIMATES_LD                      3
+#define MAX_NO_OF_ESTIMATES                     4
+
+
+#define NOISE_FLOOR_OFFSET                      6
+#define NOISE_FLOOR_OFFSET_64                   (FL2FXCONST_DBL(0.09375f))
+
+#define LOW_RES                                 0
+#define HIGH_RES                                1
+
+#define LO                                      0
+#define HI                                      1
+
+#define LENGTH_SBR_FRAME_INFO                   35      /* 19 */
+
+#define SBR_NSFB_LOW_RES                        9       /*  8 */
+#define SBR_NSFB_HIGH_RES                       18      /* 16 */
+
+
+#define SBR_XPOS_CTRL_DEFAULT                   2
+
+#define SBR_FREQ_SCALE_DEFAULT                  2
+#define SBR_ALTER_SCALE_DEFAULT                 1
+#define SBR_NOISE_BANDS_DEFAULT                 2
+
+#define SBR_LIMITER_BANDS_DEFAULT               2
+#define SBR_LIMITER_GAINS_DEFAULT               2
+#define SBR_LIMITER_GAINS_INFINITE              3
+#define SBR_INTERPOL_FREQ_DEFAULT               1
+#define SBR_SMOOTHING_LENGTH_DEFAULT            0
+
+
+/* sbr_header */
+#define SI_SBR_AMP_RES_BITS                     1
+#define SI_SBR_COUPLING_BITS                    1
+#define SI_SBR_START_FREQ_BITS                  4
+#define SI_SBR_STOP_FREQ_BITS                   4
+#define SI_SBR_XOVER_BAND_BITS                  3
+#define SI_SBR_RESERVED_BITS                    2
+#define SI_SBR_DATA_EXTRA_BITS                  1
+#define SI_SBR_HEADER_EXTRA_1_BITS              1
+#define SI_SBR_HEADER_EXTRA_2_BITS              1
+
+/* sbr_header extra 1 */
+#define SI_SBR_FREQ_SCALE_BITS                  2
+#define SI_SBR_ALTER_SCALE_BITS                 1
+#define SI_SBR_NOISE_BANDS_BITS                 2
+
+/* sbr_header extra 2 */
+#define SI_SBR_LIMITER_BANDS_BITS               2
+#define SI_SBR_LIMITER_GAINS_BITS               2
+#define SI_SBR_INTERPOL_FREQ_BITS               1
+#define SI_SBR_SMOOTHING_LENGTH_BITS            1
+
+/* sbr_grid */
+#define SBR_CLA_BITS                            2   /*!< size of bs_frame_class */
+#define SBR_CLA_BITS_LD                         1   /*!< size of bs_frame_class */
+#define SBR_ENV_BITS                            2   /*!< size of bs_num_env_raw */
+#define SBR_ABS_BITS                            2   /*!< size of bs_abs_bord_raw for HE-AAC */
+#define SBR_NUM_BITS                            2   /*!< size of bs_num_rel */
+#define SBR_REL_BITS                            2   /*!< size of bs_rel_bord_raw */
+#define SBR_RES_BITS                            1   /*!< size of bs_freq_res_flag */
+#define SBR_DIR_BITS                            1   /*!< size of bs_df_flag */
+
+
+/* sbr_data */
+#define SI_SBR_INVF_MODE_BITS                   2
+
+
+#define SI_SBR_START_ENV_BITS_AMP_RES_3_0           6
+#define SI_SBR_START_ENV_BITS_BALANCE_AMP_RES_3_0   5
+#define SI_SBR_START_NOISE_BITS_AMP_RES_3_0         5
+#define SI_SBR_START_NOISE_BITS_BALANCE_AMP_RES_3_0 5
+
+#define SI_SBR_START_ENV_BITS_AMP_RES_1_5           7
+#define SI_SBR_START_ENV_BITS_BALANCE_AMP_RES_1_5   6
+
+
+#define SI_SBR_EXTENDED_DATA_BITS               1
+#define SI_SBR_EXTENSION_SIZE_BITS              4
+#define SI_SBR_EXTENSION_ESC_COUNT_BITS         8
+#define SI_SBR_EXTENSION_ID_BITS                2
+
+#define SBR_EXTENDED_DATA_MAX_CNT               (15+255)
+
+#define EXTENSION_ID_PS_CODING                  2
+
+/* Envelope coding constants */
+#define FREQ                      0
+#define TIME                      1
+
+
+/* huffman tables */
+#define CODE_BOOK_SCF_LAV00         60
+#define CODE_BOOK_SCF_LAV01         31
+#define CODE_BOOK_SCF_LAV10         60
+#define CODE_BOOK_SCF_LAV11         31
+#define CODE_BOOK_SCF_LAV_BALANCE11 12
+#define CODE_BOOK_SCF_LAV_BALANCE10 24
+
+typedef enum
+{
+  SBR_AMP_RES_1_5=0,
+  SBR_AMP_RES_3_0
+}
+AMP_RES;
+
+typedef enum
+{
+  XPOS_MDCT,
+  XPOS_MDCT_CROSS,
+  XPOS_LC,
+  XPOS_RESERVED,
+  XPOS_SWITCHED /* not a real choice but used here to control behaviour */
+}
+XPOS_MODE;
+
+typedef enum
+{
+  INVF_OFF = 0,
+  INVF_LOW_LEVEL,
+  INVF_MID_LEVEL,
+  INVF_HIGH_LEVEL,
+  INVF_SWITCHED /* not a real choice but used here to control behaviour */
+}
+INVF_MODE;
+
+typedef enum
+{
+  SINGLE_RATE,
+  DUAL_RATE
+}
+SR_MODE;
+
+typedef enum
+{
+  FREQ_RES_LOW = 0,
+  FREQ_RES_HIGH
+}
+FREQ_RES;
+
+
+#endif