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108 lines
4.2 KiB
C
108 lines
4.2 KiB
C
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/* FluidSynth - A Software Synthesizer
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*
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* Copyright (C) 2003 Peter Hanappe and others.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public License
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* as published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the Free
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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* 02111-1307, USA
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*/
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#ifndef _FLUID_CHAN_H
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#define _FLUID_CHAN_H
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#include "fluidsynth_priv.h"
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#include "fluid_midi.h"
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#include "fluid_tuning.h"
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/*
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* fluid_channel_t
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*/
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struct _fluid_channel_t
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{
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int channum;
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unsigned int sfontnum;
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unsigned int banknum;
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unsigned int prognum;
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fluid_preset_t* preset;
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fluid_synth_t* synth;
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short key_pressure;
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short channel_pressure;
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short pitch_bend;
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short pitch_wheel_sensitivity;
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/* controller values */
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short cc[128];
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/* cached values of last MSB values of MSB/LSB controllers */
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unsigned char bank_msb;
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int interp_method;
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/* the micro-tuning */
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fluid_tuning_t* tuning;
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/* NRPN system */
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short nrpn_select;
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short nrpn_active; /* 1 if data entry CCs are for NRPN, 0 if RPN */
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/* The values of the generators, set by NRPN messages, or by
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* fluid_synth_set_gen(), are cached in the channel so they can be
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* applied to future notes. They are copied to a voice's generators
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* in fluid_voice_init(), wihich calls fluid_gen_init(). */
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fluid_real_t gen[GEN_LAST];
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/* By default, the NRPN values are relative to the values of the
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* generators set in the SoundFont. For example, if the NRPN
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* specifies an attack of 100 msec then 100 msec will be added to the
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* combined attack time of the sound font and the modulators.
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*
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* However, it is useful to be able to specify the generator value
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* absolutely, completely ignoring the generators of the sound font
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* and the values of modulators. The gen_abs field, is a boolean
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* flag indicating whether the NRPN value is absolute or not.
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*/
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char gen_abs[GEN_LAST];
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};
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fluid_channel_t* new_fluid_channel(fluid_synth_t* synth, int num);
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int delete_fluid_channel(fluid_channel_t* chan);
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void fluid_channel_init(fluid_channel_t* chan);
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void fluid_channel_init_ctrl(fluid_channel_t* chan);
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void fluid_channel_reset(fluid_channel_t* chan);
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int fluid_channel_set_preset(fluid_channel_t* chan, fluid_preset_t* preset);
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fluid_preset_t* fluid_channel_get_preset(fluid_channel_t* chan);
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unsigned int fluid_channel_get_sfontnum(fluid_channel_t* chan);
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int fluid_channel_set_sfontnum(fluid_channel_t* chan, unsigned int sfont);
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unsigned int fluid_channel_get_banknum(fluid_channel_t* chan);
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int fluid_channel_set_banknum(fluid_channel_t* chan, unsigned int bank);
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int fluid_channel_set_prognum(fluid_channel_t* chan, int prognum);
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int fluid_channel_get_prognum(fluid_channel_t* chan);
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int fluid_channel_cc(fluid_channel_t* chan, int ctrl, int val);
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int fluid_channel_pressure(fluid_channel_t* chan, int val);
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int fluid_channel_pitch_bend(fluid_channel_t* chan, int val);
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int fluid_channel_pitch_wheel_sens(fluid_channel_t* chan, int val);
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int fluid_channel_get_cc(fluid_channel_t* chan, int num);
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int fluid_channel_get_num(fluid_channel_t* chan);
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void fluid_channel_set_interp_method(fluid_channel_t* chan, int new_method);
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int fluid_channel_get_interp_method(fluid_channel_t* chan);
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#define fluid_channel_set_tuning(_c, _t) { (_c)->tuning = _t; }
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#define fluid_channel_has_tuning(_c) ((_c)->tuning != NULL)
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#define fluid_channel_get_tuning(_c) ((_c)->tuning)
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#define fluid_channel_sustained(_c) ((_c)->cc[SUSTAIN_SWITCH] >= 64)
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#define fluid_channel_set_gen(_c, _n, _v, _a) { (_c)->gen[_n] = _v; (_c)->gen_abs[_n] = _a; }
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#define fluid_channel_get_gen(_c, _n) ((_c)->gen[_n])
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#define fluid_channel_get_gen_abs(_c, _n) ((_c)->gen_abs[_n])
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#endif /* _FLUID_CHAN_H */
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