libghost/lifting.h

   1 /**
   2    @file lifting.h
   3    @brief Lifting wavelet transform
   4  */
   5
   6 /* Copyright (C) 2005
   7
   8    This library is free software; you can redistribute it and/or
   9    modify it under the terms of the GNU Lesser General Public
  10    License as published by the Free Software Foundation; either
  11    version 2.1 of the License, or (at your option) any later version.
  12
  13    This library is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16    Lesser General Public License for more details.
  17
  18    You should have received a copy of the GNU Lesser General Public
  19    License along with this library; if not, write to the Free Software
  20    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  21 */
  22
  23 #ifndef _LIFTING_H
  24 #define _LIFTING_H
  25
  26 struct LiftingBasis {
  27    const float *predict;
  28    int predict_length;
  29    int predict_delay;
  30    const float *update;
  31    int update_length;
  32    int update_delay;
  33 };
  34
  35 void lifting_forward(float *x, struct LiftingBasis *basis, int len, int stride);
  36
  37 void lifting_backward(float *x, struct LiftingBasis *basis, int len, int stride);
  38
  39 #endif