| |
| /* ----------------------------------------------------------------------------------------------------------- |
| Software License for The Fraunhofer FDK AAC Codec Library for Android |
| |
| © Copyright 1995 - 2013 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 |
| ----------------------------------------------------------------------------------------------------------- */ |
| |
| /******************************** MPEG Audio Encoder ************************** |
| |
| Initial author: M.Werner |
| contents/description: Noiseless coder module |
| |
| ******************************************************************************/ |
| |
| #ifndef __DYN_BITS_H |
| #define __DYN_BITS_H |
| |
| #include "common_fix.h" |
| |
| #include "psy_const.h" |
| #include "aacenc_tns.h" |
| |
| #define MAX_SECTIONS MAX_GROUPED_SFB |
| #define SECT_ESC_VAL_LONG 31 |
| #define SECT_ESC_VAL_SHORT 7 |
| #define CODE_BOOK_BITS 4 |
| #define SECT_BITS_LONG 5 |
| #define SECT_BITS_SHORT 3 |
| #define PNS_PCM_BITS 9 |
| |
| typedef struct |
| { |
| INT codeBook; |
| INT sfbStart; |
| INT sfbCnt; |
| INT sectionBits; /* huff + si ! */ |
| } SECTION_INFO; |
| |
| |
| typedef struct |
| { |
| INT blockType; |
| INT noOfGroups; |
| INT sfbCnt; |
| INT maxSfbPerGroup; |
| INT sfbPerGroup; |
| INT noOfSections; |
| SECTION_INFO huffsection[MAX_SECTIONS]; |
| INT sideInfoBits; /* sectioning bits */ |
| INT huffmanBits; /* huffman coded bits */ |
| INT scalefacBits; /* scalefac coded bits */ |
| INT noiseNrgBits; /* noiseEnergy coded bits */ |
| INT firstScf; /* first scf to be coded */ |
| } SECTION_DATA; |
| |
| |
| struct BITCNTR_STATE |
| { |
| INT *bitLookUp; |
| INT *mergeGainLookUp; |
| }; |
| |
| |
| INT FDKaacEnc_BCNew(BITCNTR_STATE **phBC |
| ,UCHAR* dynamic_RAM |
| ); |
| |
| void FDKaacEnc_BCClose(BITCNTR_STATE **phBC); |
| |
| #if defined(PNS_PRECOUNT_ENABLE) |
| INT noisePreCount(const INT *noiseNrg, INT maxSfb); |
| #endif |
| |
| INT FDKaacEnc_dynBitCount( |
| BITCNTR_STATE* const hBC, |
| const SHORT* const quantSpectrum, |
| const UINT* const maxValueInSfb, |
| const INT* const scalefac, |
| const INT blockType, |
| const INT sfbCnt, |
| const INT maxSfbPerGroup, |
| const INT sfbPerGroup, |
| const INT* const sfbOffset, |
| SECTION_DATA* const RESTRICT sectionData, |
| const INT* const noiseNrg, |
| const INT* const isBook, |
| const INT* const isScale, |
| const UINT syntaxFlags |
| ); |
| |
| #endif |