libfaad2/rvlc.h

   1 /*
   2 ** FAAD2 - Freeware Advanced Audio (AAC) Decoder including SBR decoding
   3 ** Copyright (C) 2003 M. Bakker, Ahead Software AG, http://www.nero.com
   4 **
   5 ** This program is free software; you can redistribute it and/or modify
   6 ** it under the terms of the GNU General Public License as published by
   7 ** the Free Software Foundation; either version 2 of the License, or
   8 ** (at your option) any later version.
   9 **
  10 ** This program is distributed in the hope that it will be useful,
  11 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 ** GNU General Public License for more details.
  14 **
  15 ** You should have received a copy of the GNU General Public License
  16 ** along with this program; if not, write to the Free Software
  17 ** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  18 **
  19 ** Any non-GPL usage of this software or parts of this software is strictly
  20 ** forbidden.
  21 **
  22 ** Commercial non-GPL licensing of this software is possible.
  23 ** For more info contact Ahead Software through Mpeg4AAClicense@nero.com.
  24 **
  25 ** $Id: rvlc.h,v 1.3 2003/09/09 18:09:52 menno Exp $
  26 **/
  27
  28 #ifndef __RVLC_SCF_H__
  29 #define __RVLC_SCF_H__
  30
  31 #ifdef __cplusplus
  32 extern "C" {
  33 #endif
  34
  35 typedef struct
  36 {
  37     int8_t index;
  38     uint8_t len;
  39     uint32_t cw;
  40 } rvlc_huff_table;
  41
  42
  43 #define ESC_VAL 7
  44
  45
  46 uint8_t rvlc_scale_factor_data(ic_stream *ics, bitfile *ld);
  47 uint8_t rvlc_decode_scale_factors(ic_stream *ics, bitfile *ld);
  48
  49 static uint8_t rvlc_decode_sf_forward(ic_stream *ics,
  50                                       bitfile *ld_sf,
  51                                       bitfile *ld_esc,
  52                                       uint8_t *is_used);
  53 static uint8_t rvlc_decode_sf_reverse(ic_stream *ics,
  54                                       bitfile *ld_sf,
  55                                       bitfile *ld_esc,
  56                                       uint8_t is_used);
  57 static int8_t rvlc_huffman_sf(bitfile *ld_sf, bitfile *ld_esc,
  58                               int8_t direction);
  59 static int8_t rvlc_huffman_esc(bitfile *ld_esc, int8_t direction);
  60
  61
  62 #ifdef __cplusplus
  63 }
  64 #endif
  65 #endif