268 lines
12 KiB
C
268 lines
12 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 Lesser General Public License
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* as published by the Free Software Foundation; either version 2.1 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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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser 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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#include "fluid_sys.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_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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#define FLUID_REVERB_DEFAULT_ROOMSIZE 0.2f /**< Default reverb room size */
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#define FLUID_REVERB_DEFAULT_DAMP 0.0f /**< Default reverb damping */
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#define FLUID_REVERB_DEFAULT_WIDTH 0.5f /**< Default reverb width */
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#define FLUID_REVERB_DEFAULT_LEVEL 0.9f /**< Default reverb level */
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#define FLUID_CHORUS_DEFAULT_N 3 /**< Default chorus voice count */
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#define FLUID_CHORUS_DEFAULT_LEVEL 2.0f /**< Default chorus level */
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#define FLUID_CHORUS_DEFAULT_SPEED 0.3f /**< Default chorus speed */
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#define FLUID_CHORUS_DEFAULT_DEPTH 8.0f /**< Default chorus depth */
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#define FLUID_CHORUS_DEFAULT_TYPE FLUID_CHORUS_MOD_SINE /**< Default chorus waveform type */
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/***************************************************************
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*
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* ENUM
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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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* 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_fx - same instance copied in rendering thread. Synchronising handled internally.
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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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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 effects_groups; /**< the number of effects units (>= 1) */
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int state; /**< the synthesizer state */
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fluid_atomic_uint_t 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; /**< List of fluid_sfont_info_t for each loaded SoundFont (remains until SoundFont is unloaded) */
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int sfont_id; /**< Incrementing ID assigned to each loaded SoundFont */
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fluid_list_t *fonts_to_be_unloaded; /**< list of timers that try to unload a 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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int fromkey_portamento; /**< fromkey portamento */
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fluid_rvoice_eventhandler_t *eventhandler;
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/**< Shadow of reverb parameter: roomsize, damping, width, level */
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double reverb_param[FLUID_REVERB_PARAM_LAST];
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/**< Shadow of chorus parameter: chorus number, level, speed, depth, type */
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double chorus_param[FLUID_CHORUS_PARAM_LAST];
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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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fluid_atomic_float_t 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_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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fluid_mod_t *default_mod; /**< the (dynamic) list of default modulators */
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#ifdef LADSPA
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fluid_ladspa_fx_t *ladspa_fx; /**< Effects unit for LADSPA support */
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#endif
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enum fluid_iir_filter_type custom_filter_type; /**< filter type of the user-defined filter currently used for all voices */
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enum fluid_iir_filter_flags custom_filter_flags; /**< filter type of the user-defined filter currently used for all voices */
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};
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/**
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* Type definition of the synthesizer's audio callback function.
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* @param synth FluidSynth instance
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* @param len Count of audio frames to synthesize
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* @param out1 Array to store left channel of audio to
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* @param loff Offset index in 'out1' for first sample
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* @param lincr Increment between samples stored to 'out1'
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* @param out2 Array to store right channel of audio to
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* @param roff Offset index in 'out2' for first sample
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* @param rincr Increment between samples stored to 'out2'
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*/
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typedef int (*fluid_audio_callback_t)(fluid_synth_t *synth, int len,
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void *out1, int loff, int lincr,
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void *out2, int roff, int rincr);
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typedef int (*fluid_audio_channels_callback_t)(fluid_synth_t *synth, int len,
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int channels_count,
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void *channels_out[], int channels_off[],
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int channels_incr[]);
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int
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fluid_synth_write_float_channels_LOCAL(fluid_synth_t *synth, int len,
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int channels_count,
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void *channels_out[], int channels_off[],
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int channels_incr[],
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int (*block_render_func)(fluid_synth_t *, int));
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int
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fluid_synth_write_s16_channels(fluid_synth_t *synth, int len,
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int channels_count,
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void *channels_out[], int channels_off[],
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int channels_incr[]);
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int
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fluid_synth_write_float_channels(fluid_synth_t *synth, int len,
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int channels_count,
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void *channels_out[], int channels_off[],
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int channels_incr[]);
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fluid_preset_t *fluid_synth_find_preset(fluid_synth_t *synth,
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int banknum,
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int prognum);
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void fluid_synth_sfont_unref(fluid_synth_t *synth, fluid_sfont_t *sfont);
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void fluid_synth_dither_s16(int *dither_index, int len, const float *lin, const 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, unsigned int num);
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int fluid_synth_reverb_set_param(fluid_synth_t *synth, int fx_group,
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int param,
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double value);
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int fluid_synth_set_reverb_full(fluid_synth_t *synth, int fx_group, int set,
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const double values[]);
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int fluid_synth_reset_chorus(fluid_synth_t *synth);
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int fluid_synth_chorus_set_param(fluid_synth_t *synth, int fx_group,
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int param, double value);
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int fluid_synth_set_chorus_full(fluid_synth_t *synth, int fx_group, int set,
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const double values[]);
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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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void delete_fluid_sample_timer(fluid_synth_t *synth, fluid_sample_timer_t *timer);
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void fluid_sample_timer_reset(fluid_synth_t *synth, fluid_sample_timer_t *timer);
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void fluid_synth_process_event_queue(fluid_synth_t *synth);
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int fluid_synth_set_gen2(fluid_synth_t *synth, int chan,
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int param, float value,
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int absolute, int normalized);
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int
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fluid_synth_process_LOCAL(fluid_synth_t *synth, int len, int nfx, float *fx[],
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int nout, float *out[], int (*block_render_func)(fluid_synth_t *, int));
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int
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fluid_synth_write_float_LOCAL(fluid_synth_t *synth, int len,
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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 (*block_render_func)(fluid_synth_t *, int));
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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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void fluid_synth_set_sample_rate_immediately(fluid_synth_t *synth, float sample_rate);
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/* extern declared in fluid_synth_monopoly.c */
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int fluid_synth_noteon_mono_staccato(fluid_synth_t *synth, int chan, int key, int vel);
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int fluid_synth_noteon_mono_LOCAL(fluid_synth_t *synth, int chan, int key, int vel);
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int fluid_synth_noteoff_mono_LOCAL(fluid_synth_t *synth, int chan, int key);
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int fluid_synth_noteon_monopoly_legato(fluid_synth_t *synth, int chan, int fromkey, int tokey, int vel);
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int fluid_synth_noteoff_monopoly(fluid_synth_t *synth, int chan, int key, char Mono);
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fluid_voice_t *
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fluid_synth_alloc_voice_LOCAL(fluid_synth_t *synth, fluid_sample_t *sample, int chan, int key, int vel, fluid_zone_range_t *zone_range);
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void fluid_synth_release_voice_on_same_note_LOCAL(fluid_synth_t *synth, int chan, int key);
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#endif /* _FLUID_SYNTH_H */
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