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/****************************************************************************
(C) Copyright Fraunhofer IIS (2004)
All Rights Reserved
Please be advised that this software and/or program delivery is
Confidential Information of Fraunhofer and subject to and covered by the
Fraunhofer IIS Software Evaluation Agreement
between Google Inc. and Fraunhofer
effective and in full force since March 1, 2012.
You may use this software and/or program only under the terms and
conditions described in the above mentioned Fraunhofer IIS Software
Evaluation Agreement. Any other and/or further use requires a separate agreement.
This software and/or program is protected by copyright law and international
treaties. Any reproduction or distribution of this software and/or program,
or any portion of it, may result in severe civil and criminal penalties, and
will be prosecuted to the maximum extent possible under law.
$Id$
****************************************************************************/
/*!
\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 */
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