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Diffstat (limited to 'libAACdec/src/rvlc_info.h')
| -rw-r--r-- | libAACdec/src/rvlc_info.h | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/libAACdec/src/rvlc_info.h b/libAACdec/src/rvlc_info.h new file mode 100644 index 0000000..2edc1b3 --- /dev/null +++ b/libAACdec/src/rvlc_info.h @@ -0,0 +1,118 @@ +/**************************************************************************** + + (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 */ |