238 lines
9.7 KiB
C
238 lines
9.7 KiB
C
/* 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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* Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA
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*/
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#ifndef _FLUID_SYNTH_H
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#define _FLUID_SYNTH_H
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/***************************************************************
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*
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* INCLUDES
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*/
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#if HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "fluidsynth_priv.h"
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#include "fluid_event_queue.h"
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#include "fluid_list.h"
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#include "fluid_rev.h"
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#include "fluid_voice.h"
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#include "fluid_chorus.h"
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//#include "fluid_ladspa.h"
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//#include "fluid_midi_router.h"
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#include "fluid_sys.h"
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#include "fluid_rvoice_event.h"
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/***************************************************************
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*
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* DEFINES
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*/
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#define FLUID_NUM_PROGRAMS 128
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#define DRUM_INST_BANK 128
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#define FLUID_UNSET_PROGRAM 128 /* Program number used to unset a preset */
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#if defined(WITH_FLOAT)
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#define FLUID_SAMPLE_FORMAT FLUID_SAMPLE_FLOAT
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#else
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#define FLUID_SAMPLE_FORMAT FLUID_SAMPLE_DOUBLE
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#endif
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/***************************************************************
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*
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* ENUM
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*/
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/*enum fluid_loop {
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FLUID_UNLOOPED = 0,
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FLUID_LOOP_DURING_RELEASE = 1,
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FLUID_NOTUSED = 2,
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FLUID_LOOP_UNTIL_RELEASE = 3
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};*/
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/**
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* Bank Select MIDI message styles. Default style is GS.
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*/
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enum fluid_midi_bank_select
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{
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FLUID_BANK_STYLE_GM, /**< GM style, bank = 0 always (CC0/MSB and CC32/LSB ignored) */
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FLUID_BANK_STYLE_GS, /**< GS style, bank = CC0/MSB (CC32/LSB ignored) */
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FLUID_BANK_STYLE_XG, /**< XG style, bank = CC32/LSB (CC0/MSB ignored) */
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FLUID_BANK_STYLE_MMA /**< MMA style bank = 128*MSB+LSB */
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};
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enum fluid_synth_status
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{
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FLUID_SYNTH_CLEAN,
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FLUID_SYNTH_PLAYING,
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FLUID_SYNTH_QUIET,
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FLUID_SYNTH_STOPPED
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};
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#define SYNTH_REVERB_CHANNEL 0
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#define SYNTH_CHORUS_CHANNEL 1
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/**
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* Structure used for sfont_info field in #fluid_synth_t for each loaded
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* SoundFont with the SoundFont instance and additional fields.
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*/
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typedef struct _fluid_sfont_info_t {
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fluid_sfont_t *sfont; /**< Loaded SoundFont */
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fluid_synth_t *synth; /**< Parent synth */
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int refcount; /**< SoundFont reference count (0 if no presets referencing it) */
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int bankofs; /**< Bank offset */
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} fluid_sfont_info_t;
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/*
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* fluid_synth_t
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*
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* Mutual exclusion notes (as of 1.1.2):
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*
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* All variables are considered belongning to the "public API" thread,
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* which processes all MIDI, except for:
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*
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* ticks_since_start - atomic, set by rendering thread only
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* cpu_load - atomic, set by rendering thread only
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* cur, curmax, dither_index - used by rendering thread only
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* LADSPA_FxUnit - same instance copied in rendering thread. Synchronising handled internally (I think...?).
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*
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*/
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struct _fluid_synth_t
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{
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fluid_rec_mutex_t mutex; /**< Lock for public API */
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int use_mutex; /**< Use mutex for all public API functions? */
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int public_api_count; /**< How many times the mutex is currently locked */
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fluid_settings_t* settings; /**< the synthesizer settings */
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int device_id; /**< Device ID used for SYSEX messages */
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int polyphony; /**< Maximum polyphony */
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int with_reverb; /**< Should the synth use the built-in reverb unit? */
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int with_chorus; /**< Should the synth use the built-in chorus unit? */
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int verbose; /**< Turn verbose mode on? */
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int dump; /**< Dump events to stdout to hook up a user interface? */
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double sample_rate; /**< The sample rate */
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int midi_channels; /**< the number of MIDI channels (>= 16) */
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int bank_select; /**< the style of Bank Select MIDI messages */
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int audio_channels; /**< the number of audio channels (1 channel=left+right) */
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int audio_groups; /**< the number of (stereo) 'sub'groups from the synth.
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Typically equal to audio_channels. */
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int effects_channels; /**< the number of effects channels (>= 2) */
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int state; /**< the synthesizer state */
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unsigned int ticks_since_start; /**< the number of audio samples since the start */
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unsigned int start; /**< the start in msec, as returned by system clock */
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fluid_overflow_prio_t overflow; /**< parameters for overflow priority (aka voice-stealing) */
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fluid_list_t *loaders; /**< the SoundFont loaders */
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fluid_list_t *sfont_info; /**< List of fluid_sfont_info_t for each loaded SoundFont (remains until SoundFont is unloaded) */
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fluid_hashtable_t *sfont_hash; /**< Hash of fluid_sfont_t->fluid_sfont_info_t (remains until SoundFont is deleted) */
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unsigned int sfont_id; /**< Incrementing ID assigned to each loaded SoundFont */
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float gain; /**< master gain */
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fluid_channel_t** channel; /**< the channels */
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int nvoice; /**< the length of the synthesis process array (max polyphony allowed) */
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fluid_voice_t** voice; /**< the synthesis voices */
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int active_voice_count; /**< count of active voices */
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unsigned int noteid; /**< the id is incremented for every new note. it's used for noteoff's */
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unsigned int storeid;
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fluid_rvoice_eventhandler_t* eventhandler;
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float reverb_roomsize; /**< Shadow of reverb roomsize */
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float reverb_damping; /**< Shadow of reverb damping */
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float reverb_width; /**< Shadow of reverb width */
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float reverb_level; /**< Shadow of reverb level */
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int chorus_nr; /**< Shadow of chorus number */
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float chorus_level; /**< Shadow of chorus level */
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float chorus_speed; /**< Shadow of chorus speed */
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float chorus_depth; /**< Shadow of chorus depth */
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int chorus_type; /**< Shadow of chorus type */
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int cur; /**< the current sample in the audio buffers to be output */
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int curmax; /**< current amount of samples present in the audio buffers */
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int dither_index; /**< current index in random dither value buffer: fluid_synth_(write_s16|dither_s16) */
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char outbuf[256]; /**< buffer for message output */
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float cpu_load; /**< CPU load in percent (CPU time required / audio synthesized time * 100) */
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fluid_tuning_t*** tuning; /**< 128 banks of 128 programs for the tunings */
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fluid_private_t tuning_iter; /**< Tuning iterators per each thread */
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fluid_midi_router_t* midi_router; /**< The midi router. Could be done nicer. */
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fluid_sample_timer_t* sample_timers; /**< List of timers triggered before a block is processed */
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unsigned int min_note_length_ticks; /**< If note-offs are triggered just after a note-on, they will be delayed */
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int cores; /**< Number of CPU cores (1 by default) */
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#ifdef LADSPA
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fluid_LADSPA_FxUnit_t* LADSPA_FxUnit; /**< Effects unit for LADSPA support */
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#endif
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};
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int fluid_synth_setstr(fluid_synth_t* synth, const char* name, const char* str);
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int fluid_synth_dupstr(fluid_synth_t* synth, const char* name, char** str);
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int fluid_synth_setnum(fluid_synth_t* synth, const char* name, double val);
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int fluid_synth_getnum(fluid_synth_t* synth, const char* name, double* val);
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int fluid_synth_setint(fluid_synth_t* synth, const char* name, int val);
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int fluid_synth_getint(fluid_synth_t* synth, const char* name, int* val);
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fluid_preset_t* fluid_synth_find_preset(fluid_synth_t* synth,
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unsigned int banknum,
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unsigned int prognum);
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void fluid_synth_sfont_unref (fluid_synth_t *synth, fluid_sfont_t *sfont);
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int fluid_synth_all_notes_off(fluid_synth_t* synth, int chan);
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int fluid_synth_all_sounds_off(fluid_synth_t* synth, int chan);
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int fluid_synth_kill_voice(fluid_synth_t* synth, fluid_voice_t * voice);
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void fluid_synth_print_voice(fluid_synth_t* synth);
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void fluid_synth_dither_s16(int *dither_index, int len, float* lin, float* rin,
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void* lout, int loff, int lincr,
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void* rout, int roff, int rincr);
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int fluid_synth_reset_reverb(fluid_synth_t* synth);
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int fluid_synth_set_reverb_preset(fluid_synth_t* synth, int num);
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int fluid_synth_set_reverb_full(fluid_synth_t* synth, int set, double roomsize,
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double damping, double width, double level);
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int fluid_synth_reset_chorus(fluid_synth_t* synth);
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int fluid_synth_set_chorus_full(fluid_synth_t* synth, int set, int nr, double level,
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double speed, double depth_ms, int type);
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fluid_sample_timer_t* new_fluid_sample_timer(fluid_synth_t* synth, fluid_timer_callback_t callback, void* data);
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int delete_fluid_sample_timer(fluid_synth_t* synth, fluid_sample_timer_t* timer);
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void fluid_synth_api_enter(fluid_synth_t* synth);
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void fluid_synth_api_exit(fluid_synth_t* synth);
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void fluid_synth_process_event_queue(fluid_synth_t* synth);
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/*
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* misc
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*/
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void fluid_synth_settings(fluid_settings_t* settings);
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#endif /* _FLUID_SYNTH_H */
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