postfish/freq.h

   1 /*
   2  *
   3  *  postfish
   4  *
   5  *      Copyright (C) 2002-2005 Monty and Xiph.Org
   6  *
   7  *  Postfish is free software; you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License as published by
   9  *  the Free Software Foundation; either version 2, or (at your option)
  10  *  any later version.
  11  *
  12  *  Postfish is distributed in the hope that it will be useful,
  13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *  GNU General Public License for more details.
  16  *
  17  *  You should have received a copy of the GNU General Public License
  18  *  along with Postfish; see the file COPYING.  If not, write to the
  19  *  Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
  20  *
  21  *
  22  */
  23
  24 #include "postfish.h"
  25 #include <fftw3.h>
  26
  27 typedef struct {
  28   float       *fftwf_buffer;
  29   fftwf_plan  fftwf_forward;
  30   fftwf_plan  fftwf_backward;
  31
  32   int qblocksize;
  33   int bands;
  34
  35   float **ho_window;
  36   float  *ho_area;
  37
  38   float *window;
  39 } freq_class_setup;
  40
  41
  42 typedef struct {
  43   time_linkage out;
  44   feedback_generic_pool feedpool;
  45   freq_class_setup *fc;
  46
  47   int *activeP;
  48   int *active1;
  49   int *active0;
  50
  51   u_int32_t mutemask0;
  52   u_int32_t mutemask1;
  53   u_int32_t mutemaskP;
  54
  55   float **lap1;
  56   float **lap0;
  57   float **lapC;
  58
  59   float **cache1;
  60   float **cache0;
  61   int cache_samples;
  62   int fillstate;     /* 0: uninitialized
  63                         1: half-primed
  64                         2: nominal
  65                         3: eof processed */
  66   float **peak;
  67   float **rms;
  68 } freq_state;
  69
  70
  71
  72 extern int pull_freq_feedback(freq_state *ff,float **peak,float **rms);
  73 extern int freq_class_load(freq_class_setup *f,const float *frequencies, int bands);
  74 extern int freq_load(freq_state *f,freq_class_setup *fc,int ch);
  75
  76 extern int freq_reset(freq_state *f);
  77 extern time_linkage *freq_read(time_linkage *in,
  78                                freq_state *f,
  79                                int *visible, int *active,
  80                                void (*func)(float *,int i));