| /* ----------------------------------------------------------------------------- |
| Software License for The Fraunhofer FDK AAC Codec Library for Android |
| |
| © Copyright 1995 - 2018 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 |
| ----------------------------------------------------------------------------- */ |
| |
| /**************************** SBR encoder library ****************************** |
| |
| Author(s): |
| |
| Description: |
| |
| *******************************************************************************/ |
| |
| /*! |
| \file |
| \brief SBR main definitions $Revision: 92790 $ |
| */ |
| #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 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 SBR_MAX_ENERGY_VALUES 5 |
| #define SBR_GLOBAL_TONALITY_VALUES 2 |
| |
| #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 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 |
| |
| /* qmf data scaling */ |
| #define QMF_SCALE_OFFSET 7 |
| |
| /* 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; |
| |
| #endif |