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/* 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_GEN_H
#define _FLUID_GEN_H
#include "fluidsynth_priv.h"
typedef struct _fluid_gen_info_t
{
char num; /* Generator number */
char init; /* Does the generator need to be initialized (not used) */
char nrpn_scale; /* The scale to convert from NRPN (cfr. fluid_gen_map_nrpn()) */
float min; /* The minimum value */
float max; /* The maximum value */
float def; /* The default value (cfr. fluid_gen_init()) */
} fluid_gen_info_t;
/*
* SoundFont generator structure.
*/
typedef struct _fluid_gen_t
{
unsigned char flags; /**< Is the generator set or not (#fluid_gen_flags) */
double val; /**< The nominal value */
double mod; /**< Change by modulators */
double nrpn; /**< Change by NRPN messages */
} fluid_gen_t;
/*
* Enum value for 'flags' field of #fluid_gen_t (not really flags).
*/
enum fluid_gen_flags
{
GEN_UNUSED, /**< Generator value is not set */
GEN_SET, /**< Generator value is set */
};
#define fluid_gen_set_mod(_gen, _val) { (_gen)->mod = (double) (_val); }
#define fluid_gen_set_nrpn(_gen, _val) { (_gen)->nrpn = (double) (_val); }
fluid_real_t fluid_gen_scale(int gen, float value);
fluid_real_t fluid_gen_scale_nrpn(int gen, int nrpn);
void fluid_gen_init(fluid_gen_t *gen, fluid_channel_t *channel);
#endif /* _FLUID_GEN_H */
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