apps/codecs/libfaad/filtbank.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 ** $Id$
  26 **/
  27
  28 #ifndef __FILTBANK_H__
  29 #define __FILTBANK_H__
  30
  31 #ifdef __cplusplus
  32 extern "C" {
  33 #endif
  34
  35
  36 fb_info *filter_bank_init(uint16_t frame_len);
  37 void filter_bank_end(fb_info *fb);
  38
  39 #ifdef LTP_DEC
  40 void filter_bank_ltp(fb_info *fb,
  41                      uint8_t window_sequence,
  42                      uint8_t window_shape,
  43                      uint8_t window_shape_prev,
  44                      real_t *in_data,
  45                      real_t *out_mdct,
  46                      uint8_t object_type,
  47                      uint16_t frame_len);
  48 #endif
  49
  50 void ifilter_bank(fb_info *fb, uint8_t window_sequence, uint8_t window_shape,
  51                   uint8_t window_shape_prev, real_t *freq_in,
  52                   real_t *time_out, real_t *overlap,
  53                   uint8_t object_type, uint16_t frame_len);
  54
  55 #ifdef __cplusplus
  56 }
  57 #endif
  58 #endif