text: /* FluidSynth - A Software Synthesizer
   *
   * Copyright (C) 2003  Peter Hanappe and others.
   *
   * This library is free software; you can redistribute it and/or
   * modify it under the terms of the GNU Lesser General Public License
   * as published by the Free Software Foundation; either version 2.1 of
   * the License, or (at your option) any later version.
   *
   * This library is distributed in the hope that it will be useful, but
   * WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   * Lesser General Public License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with this library; if not, write to the Free
   * Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
   * 02110-1301, USA
   */
  
  
  #ifndef _FLUID_REV_H
  #define _FLUID_REV_H
  
  #include "fluidsynth_priv.h"
  
  typedef struct _fluid_revmodel_t fluid_revmodel_t;
  
  /* enum describing each reverb parameter */
  enum fluid_reverb_param
  {
      FLUID_REVERB_ROOMSIZE,  /**< reverb time */
      FLUID_REVERB_DAMP,      /**< high frequency damping */
      FLUID_REVERB_WIDTH,     /**< stereo width */
      FLUID_REVERB_LEVEL,     /**< output level */
      FLUID_REVERB_PARAM_LAST /* number of enum fluid_reverb_param */
  };
  
  /* return a bit flag from param: 2^param */
  #define FLUID_REVPARAM_TO_SETFLAG(param) (1 << param)
  
  /** Flags for fluid_revmodel_set() */
  typedef enum
  {
      FLUID_REVMODEL_SET_ROOMSIZE       = FLUID_REVPARAM_TO_SETFLAG(FLUID_REVERB_ROOMSIZE),
      FLUID_REVMODEL_SET_DAMPING        = FLUID_REVPARAM_TO_SETFLAG(FLUID_REVERB_DAMP),
      FLUID_REVMODEL_SET_WIDTH          = FLUID_REVPARAM_TO_SETFLAG(FLUID_REVERB_WIDTH),
      FLUID_REVMODEL_SET_LEVEL          = FLUID_REVPARAM_TO_SETFLAG(FLUID_REVERB_LEVEL),
  
      /** Value for fluid_revmodel_set() which sets all reverb parameters. */
      FLUID_REVMODEL_SET_ALL            =   FLUID_REVMODEL_SET_LEVEL
                                            | FLUID_REVMODEL_SET_WIDTH
                                            | FLUID_REVMODEL_SET_DAMPING
                                            | FLUID_REVMODEL_SET_ROOMSIZE,
  } fluid_revmodel_set_t;
  
  /*
   * reverb preset
   */
  typedef struct _fluid_revmodel_presets_t
  {
      const char *name;
      fluid_real_t roomsize;
      fluid_real_t damp;
      fluid_real_t width;
      fluid_real_t level;
  } fluid_revmodel_presets_t;
  
  
  /*
   * reverb
   */
  fluid_revmodel_t *
  new_fluid_revmodel(fluid_real_t sample_rate_max, fluid_real_t sample_rate);
  
  void delete_fluid_revmodel(fluid_revmodel_t *rev);
  
  void fluid_revmodel_processmix(fluid_revmodel_t *rev, const fluid_real_t *in,
                                 fluid_real_t *left_out, fluid_real_t *right_out);
  
  void fluid_revmodel_processreplace(fluid_revmodel_t *rev, const fluid_real_t *in,
                                     fluid_real_t *left_out, fluid_real_t *right_out);
  
  void fluid_revmodel_reset(fluid_revmodel_t *rev);
  
  void fluid_revmodel_set(fluid_revmodel_t *rev, int set, fluid_real_t roomsize,
                          fluid_real_t damping, fluid_real_t width, fluid_real_t level);
  
  int fluid_revmodel_samplerate_change(fluid_revmodel_t *rev, fluid_real_t sample_rate);
  
  #endif /* _FLUID_REV_H */
  