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authorMatthias P. Braendli <matthias.braendli@mpb.li>2016-09-10 20:15:44 +0200
committerMatthias P. Braendli <matthias.braendli@mpb.li>2016-09-10 20:15:44 +0200
commit14c7b800eaa23e9da7c92c7c4df397d0c191f097 (patch)
treed840b6ec41ff74d1184ca1dcd7731d08f1e9ebbb /libAACdec/src/rvlc_info.h
parent78a801e4d716c6f2403cc56cf6c5b6f138f24b2f (diff)
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-
-/* -----------------------------------------------------------------------------------------------------------
-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
------------------------------------------------------------------------------------------------------------ */
-
-/*!
- \file
- \brief Defines structures for RVLC
- \author Robert Weidner
-*/
-#ifndef RVLC_INFO_H
-#define RVLC_INFO_H
-
-
-
-#define FWD 0 /* bitstream decoding direction forward (RVL coded part) */
-#define BWD 1 /* bitstream decoding direction backward (RVL coded part) */
-
-#define MAX_RVL 7 /* positive RVLC escape */
-#define MIN_RVL -7 /* negative RVLC escape */
-#define MAX_ALLOWED_DPCM_INDEX 14 /* the maximum allowed index of a decoded dpcm value (offset 'TABLE_OFFSET' incl --> must be subtracted) */
-#define TABLE_OFFSET 7 /* dpcm offset of valid output values of rvl table decoding, the rvl table ouly returns positive values, therefore the offset */
-#define MAX_LEN_RVLC_CODE_WORD 9 /* max length of a RVL codeword in bits */
-#define MAX_LEN_RVLC_ESCAPE_WORD 20 /* max length of huffman coded RVLC escape word in bits */
-
-#define DPCM_NOISE_NRG_BITS 9
-#define SF_OFFSET 100 /* offset for correcting scf value */
-
-#define CONCEAL_MAX_INIT 1311 /* arbitrary value */
-#define CONCEAL_MIN_INIT -1311 /* arbitrary value */
-
-#define RVLC_MAX_SFB ((8) * (16))
-
-/* sideinfo of RVLC */
-typedef struct
-{
- /* ------- ESC 1 Data: --------- */ /* order of RVLC-bitstream components in bitstream (RVLC-initialization), every component appears only once in bitstream */
- INT sf_concealment; /* 1 */
- INT rev_global_gain; /* 2 */
- SHORT length_of_rvlc_sf; /* 3 */ /* original value, gets modified (subtract 9) in case of noise (PNS); is kept for later use */
- INT dpcm_noise_nrg; /* 4 optional */
- INT sf_escapes_present; /* 5 */
- SHORT length_of_rvlc_escapes; /* 6 optional */
- INT dpcm_noise_last_position; /* 7 optional */
-
- INT dpcm_is_last_position;
-
- SHORT length_of_rvlc_sf_fwd; /* length_of_rvlc_sf used for forward decoding */
- SHORT length_of_rvlc_sf_bwd; /* length_of_rvlc_sf used for backward decoding */
-
- /* for RVL-Codeword decoder to distinguish between fwd and bwd decoding */
- SHORT *pRvlBitCnt_RVL;
- USHORT *pBitstrIndxRvl_RVL;
-
- UCHAR numWindowGroups;
- UCHAR maxSfbTransmitted;
- UCHAR first_noise_group;
- UCHAR first_noise_band;
- UCHAR direction;
-
- /* bitstream indices */
- USHORT bitstreamIndexRvlFwd; /* base address of RVL-coded-scalefactor data (ESC 2) for forward decoding */
- USHORT bitstreamIndexRvlBwd; /* base address of RVL-coded-scalefactor data (ESC 2) for backward decoding */
- USHORT bitstreamIndexEsc; /* base address where RVLC-escapes start (ESC 2) */
-
- /* decoding trees */
- const UINT *pHuffTreeRvlCodewds;
- const UINT *pHuffTreeRvlcEscape;
-
- /* escape counters */
- UCHAR numDecodedEscapeWordsFwd; /* when decoding RVL-codes forward */
- UCHAR numDecodedEscapeWordsBwd; /* when decoding RVL-codes backward */
- UCHAR numDecodedEscapeWordsEsc; /* when decoding the escape-Words */
-
- SCHAR noise_used;
- SCHAR intensity_used;
- SCHAR sf_used;
-
- SHORT firstScf;
- SHORT lastScf;
- SHORT firstNrg;
- SHORT lastNrg;
- SHORT firstIs;
- SHORT lastIs;
-
- /* ------ RVLC error detection ------ */
- UINT errorLogRvlc; /* store RVLC errors */
- SHORT conceal_min; /* is set at backward decoding */
- SHORT conceal_max; /* is set at forward decoding */
- SHORT conceal_min_esc; /* is set at backward decoding */
- SHORT conceal_max_esc; /* is set at forward decoding */
-} CErRvlcInfo;
-
-typedef CErRvlcInfo RVLC_INFO; /* temp */
-
-
-
-#endif /* RVLC_INFO_H */