Snapshot 2bda038c163298531d47394bc2c09e1409c5d0db

Change-Id: If584e579464f28b97d50e51fc76ba654a5536c54

1 files changed, 176 insertions, 0 deletions

diff --git a/libAACdec/src/rvlc_info.h b/libAACdec/src/rvlc_info.h
new file mode 100644
index 0000000..e245090
--- /dev/null
+++ b/libAACdec/src/rvlc_info.h
@@ -0,0 +1,176 @@
+
+/* -----------------------------------------------------------------------------------------------------------
+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  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 */