libfaad2/lt_predict.h

   1 /*
   2 ** FAAD2 - Freeware Advanced Audio (AAC) Decoder including SBR decoding
   3 ** Copyright (C) 2003-2004 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: lt_predict.h,v 1.16 2004/09/04 14:56:28 menno Exp $
  26 **/
  27
  28 #ifdef LTP_DEC
  29
  30 #ifndef __LT_PREDICT_H__
  31 #define __LT_PREDICT_H__
  32
  33 #ifdef __cplusplus
  34 extern "C" {
  35 #endif
  36
  37 #include "filtbank.h"
  38
  39 uint8_t is_ltp_ot(uint8_t object_type);
  40
  41 void lt_prediction(ic_stream *ics,
  42                    ltp_info *ltp,
  43                    real_t *spec,
  44                    int16_t *lt_pred_stat,
  45                    fb_info *fb,
  46                    uint8_t win_shape,
  47                    uint8_t win_shape_prev,
  48                    uint8_t sr_index,
  49                    uint8_t object_type,
  50                    uint16_t frame_len);
  51
  52 void lt_update_state(int16_t *lt_pred_stat,
  53                      real_t *time,
  54                      real_t *overlap,
  55                      uint16_t frame_len,
  56                      uint8_t object_type);
  57
  58 #ifdef __cplusplus
  59 }
  60 #endif
  61 #endif
  62
  63 #endif