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diff --git a/libSBRenc/src/sbr_def.h b/libSBRenc/src/sbr_def.h new file mode 100644 index 0000000..1d99f7f --- /dev/null +++ b/libSBRenc/src/sbr_def.h @@ -0,0 +1,286 @@ + +/* ----------------------------------------------------------------------------------------------------------- +Software License for The Fraunhofer FDK AAC Codec Library for Android + +© Copyright 1995 - 2012 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. + All rights reserved. + + 1. INTRODUCTION +The Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software that implements +the MPEG Advanced Audio Coding ("AAC") encoding and decoding scheme for digital audio. +This FDK AAC Codec software is intended to be used on a wide variety of Android devices. + +AAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient general perceptual +audio codecs. AAC-ELD is considered the best-performing full-bandwidth communications codec by +independent studies and is widely deployed. AAC has been standardized by ISO and IEC as part +of the MPEG specifications. + +Patent licenses for necessary patent claims for the FDK AAC Codec (including those of Fraunhofer) +may be obtained through Via Licensing (www.vialicensing.com) or through the respective patent owners +individually for the purpose of encoding or decoding bit streams in products that are compliant with +the ISO/IEC MPEG audio standards. Please note that most manufacturers of Android devices already license +these patent claims through Via Licensing or directly from the patent owners, and therefore FDK AAC Codec +software may already be covered under those patent licenses when it is used for those licensed purposes only. + +Commercially-licensed AAC software libraries, including floating-point versions with enhanced sound quality, +are also available from Fraunhofer. Users are encouraged to check the Fraunhofer website for additional +applications information and documentation. + +2. COPYRIGHT LICENSE + +Redistribution and use in source and binary forms, with or without modification, are permitted without +payment of copyright license fees provided that you satisfy the following conditions: + +You must retain the complete text of this software license in redistributions of the FDK AAC Codec or +your modifications thereto in source code form. + +You must retain the complete text of this software license in the documentation and/or other materials +provided with redistributions of the FDK AAC Codec or your modifications thereto in binary form. +You must make available free of charge copies of the complete source code of the FDK AAC Codec and your +modifications thereto to recipients of copies in binary form. + +The name of Fraunhofer may not be used to endorse or promote products derived from this library without +prior written permission. + +You may not charge copyright license fees for anyone to use, copy or distribute the FDK AAC Codec +software or your modifications thereto. + +Your modified versions of the FDK AAC Codec must carry prominent notices stating that you changed the software +and the date of any change. For modified versions of the FDK AAC Codec, the term +"Fraunhofer FDK AAC Codec Library for Android" must be replaced by the term +"Third-Party Modified Version of the Fraunhofer FDK AAC Codec Library for Android." + +3. NO PATENT LICENSE + +NO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without limitation the patents of Fraunhofer, +ARE GRANTED BY THIS SOFTWARE LICENSE. Fraunhofer provides no warranty of patent non-infringement with +respect to this software. + +You may use this FDK AAC Codec software or modifications thereto only for purposes that are authorized +by appropriate patent licenses. + +4. DISCLAIMER + +This FDK AAC Codec software is provided by Fraunhofer on behalf of the copyright holders and contributors +"AS IS" and WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, including but not limited to the implied warranties +of merchantability and fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR +CONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary, or consequential damages, +including but not limited to procurement of substitute goods or services; loss of use, data, or profits, +or business interruption, however caused and on any theory of liability, whether in contract, strict +liability, or tort (including negligence), arising in any way out of the use of this software, even if +advised of the possibility of such damage. + +5. CONTACT INFORMATION + +Fraunhofer Institute for Integrated Circuits IIS +Attention: Audio and Multimedia Departments - FDK AAC LL +Am Wolfsmantel 33 +91058 Erlangen, Germany + +www.iis.fraunhofer.de/amm +amm-info@iis.fraunhofer.de +----------------------------------------------------------------------------------------------------------- */ + +/*! + \file + \brief SBR main definitions +*/ +#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 |