/* 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_SYNTH_H #define _FLUID_SYNTH_H /*************************************************************** * * INCLUDES */ #include "fluid_sys.h" #include "fluid_list.h" #include "fluid_rev.h" #include "fluid_voice.h" #include "fluid_chorus.h" #include "fluid_rvoice_event.h" /*************************************************************** * * DEFINES */ #define FLUID_NUM_PROGRAMS 128 #define DRUM_INST_BANK 128 #define FLUID_UNSET_PROGRAM 128 /* Program number used to unset a preset */ #define FLUID_REVERB_DEFAULT_ROOMSIZE 0.2f /**< Default reverb room size */ #define FLUID_REVERB_DEFAULT_DAMP 0.0f /**< Default reverb damping */ #define FLUID_REVERB_DEFAULT_WIDTH 0.5f /**< Default reverb width */ #define FLUID_REVERB_DEFAULT_LEVEL 0.9f /**< Default reverb level */ #define FLUID_CHORUS_DEFAULT_N 3 /**< Default chorus voice count */ #define FLUID_CHORUS_DEFAULT_LEVEL 2.0f /**< Default chorus level */ #define FLUID_CHORUS_DEFAULT_SPEED 0.3f /**< Default chorus speed */ #define FLUID_CHORUS_DEFAULT_DEPTH 8.0f /**< Default chorus depth */ #define FLUID_CHORUS_DEFAULT_TYPE FLUID_CHORUS_MOD_SINE /**< Default chorus waveform type */ /*************************************************************** * * ENUM */ /** * Bank Select MIDI message styles. Default style is GS. */ enum fluid_midi_bank_select { FLUID_BANK_STYLE_GM, /**< GM style, bank = 0 always (CC0/MSB and CC32/LSB ignored) */ FLUID_BANK_STYLE_GS, /**< GS style, bank = CC0/MSB (CC32/LSB ignored) */ FLUID_BANK_STYLE_XG, /**< XG style, bank = CC32/LSB (CC0/MSB ignored) */ FLUID_BANK_STYLE_MMA /**< MMA style bank = 128*MSB+LSB */ }; enum fluid_synth_status { FLUID_SYNTH_CLEAN, FLUID_SYNTH_PLAYING, FLUID_SYNTH_QUIET, FLUID_SYNTH_STOPPED }; #define SYNTH_REVERB_CHANNEL 0 #define SYNTH_CHORUS_CHANNEL 1 /* * fluid_synth_t * * Mutual exclusion notes (as of 1.1.2): * * All variables are considered belongning to the "public API" thread, * which processes all MIDI, except for: * * ticks_since_start - atomic, set by rendering thread only * cpu_load - atomic, set by rendering thread only * cur, curmax, dither_index - used by rendering thread only * ladspa_fx - same instance copied in rendering thread. Synchronising handled internally. * */ struct _fluid_synth_t { fluid_rec_mutex_t mutex; /**< Lock for public API */ int use_mutex; /**< Use mutex for all public API functions? */ int public_api_count; /**< How many times the mutex is currently locked */ fluid_settings_t *settings; /**< the synthesizer settings */ int device_id; /**< Device ID used for SYSEX messages */ int polyphony; /**< Maximum polyphony */ int with_reverb; /**< Should the synth use the built-in reverb unit? */ int with_chorus; /**< Should the synth use the built-in chorus unit? */ int verbose; /**< Turn verbose mode on? */ double sample_rate; /**< The sample rate */ int midi_channels; /**< the number of MIDI channels (>= 16) */ int bank_select; /**< the style of Bank Select MIDI messages */ int audio_channels; /**< the number of audio channels (1 channel=left+right) */ int audio_groups; /**< the number of (stereo) 'sub'groups from the synth. Typically equal to audio_channels. */ int effects_channels; /**< the number of effects channels (>= 2) */ int effects_groups; /**< the number of effects units (>= 1) */ int state; /**< the synthesizer state */ fluid_atomic_uint_t ticks_since_start; /**< the number of audio samples since the start */ unsigned int start; /**< the start in msec, as returned by system clock */ fluid_overflow_prio_t overflow; /**< parameters for overflow priority (aka voice-stealing) */ fluid_list_t *loaders; /**< the SoundFont loaders */ fluid_list_t *sfont; /**< List of fluid_sfont_info_t for each loaded SoundFont (remains until SoundFont is unloaded) */ int sfont_id; /**< Incrementing ID assigned to each loaded SoundFont */ float gain; /**< master gain */ fluid_channel_t **channel; /**< the channels */ int nvoice; /**< the length of the synthesis process array (max polyphony allowed) */ fluid_voice_t **voice; /**< the synthesis voices */ int active_voice_count; /**< count of active voices */ unsigned int noteid; /**< the id is incremented for every new note. it's used for noteoff's */ unsigned int storeid; int fromkey_portamento; /**< fromkey portamento */ fluid_rvoice_eventhandler_t *eventhandler; double reverb_roomsize; /**< Shadow of reverb roomsize */ double reverb_damping; /**< Shadow of reverb damping */ double reverb_width; /**< Shadow of reverb width */ double reverb_level; /**< Shadow of reverb level */ int chorus_nr; /**< Shadow of chorus number */ double chorus_level; /**< Shadow of chorus level */ double chorus_speed; /**< Shadow of chorus speed */ double chorus_depth; /**< Shadow of chorus depth */ int chorus_type; /**< Shadow of chorus type */ int cur; /**< the current sample in the audio buffers to be output */ int curmax; /**< current amount of samples present in the audio buffers */ int dither_index; /**< current index in random dither value buffer: fluid_synth_(write_s16|dither_s16) */ fluid_atomic_float_t cpu_load; /**< CPU load in percent (CPU time required / audio synthesized time * 100) */ fluid_tuning_t ***tuning; /**< 128 banks of 128 programs for the tunings */ fluid_private_t tuning_iter; /**< Tuning iterators per each thread */ fluid_sample_timer_t *sample_timers; /**< List of timers triggered before a block is processed */ unsigned int min_note_length_ticks; /**< If note-offs are triggered just after a note-on, they will be delayed */ int cores; /**< Number of CPU cores (1 by default) */ fluid_mod_t *default_mod; /**< the (dynamic) list of default modulators */ #ifdef LADSPA fluid_ladspa_fx_t *ladspa_fx; /**< Effects unit for LADSPA support */ #endif enum fluid_iir_filter_type custom_filter_type; /**< filter type of the user-defined filter currently used for all voices */ enum fluid_iir_filter_flags custom_filter_flags; /**< filter type of the user-defined filter currently used for all voices */ }; /** * Type definition of the synthesizer's audio callback function. * @param synth FluidSynth instance * @param len Count of audio frames to synthesize * @param out1 Array to store left channel of audio to * @param loff Offset index in 'out1' for first sample * @param lincr Increment between samples stored to 'out1' * @param out2 Array to store right channel of audio to * @param roff Offset index in 'out2' for first sample * @param rincr Increment between samples stored to 'out2' */ typedef int (*fluid_audio_callback_t)(fluid_synth_t *synth, int len, void *out1, int loff, int lincr, void *out2, int roff, int rincr); fluid_preset_t *fluid_synth_find_preset(fluid_synth_t *synth, int banknum, int prognum); void fluid_synth_sfont_unref(fluid_synth_t *synth, fluid_sfont_t *sfont); void fluid_synth_dither_s16(int *dither_index, int len, const float *lin, const float *rin, void *lout, int loff, int lincr, void *rout, int roff, int rincr); int fluid_synth_reset_reverb(fluid_synth_t *synth); int fluid_synth_set_reverb_preset(fluid_synth_t *synth, unsigned int num); int fluid_synth_set_reverb_full(fluid_synth_t *synth, int set, double roomsize, double damping, double width, double level); int fluid_synth_reset_chorus(fluid_synth_t *synth); int fluid_synth_set_chorus_full(fluid_synth_t *synth, int set, int nr, double level, double speed, double depth_ms, int type); fluid_sample_timer_t *new_fluid_sample_timer(fluid_synth_t *synth, fluid_timer_callback_t callback, void *data); void delete_fluid_sample_timer(fluid_synth_t *synth, fluid_sample_timer_t *timer); void fluid_sample_timer_reset(fluid_synth_t *synth, fluid_sample_timer_t *timer); void fluid_synth_process_event_queue(fluid_synth_t *synth); int fluid_synth_set_gen2(fluid_synth_t *synth, int chan, int param, float value, int absolute, int normalized); int fluid_synth_process_LOCAL(fluid_synth_t *synth, int len, int nfx, float *fx[], int nout, float *out[], int (*block_render_func)(fluid_synth_t *, int)); int fluid_synth_write_float_LOCAL(fluid_synth_t *synth, int len, void *lout, int loff, int lincr, void *rout, int roff, int rincr, int (*block_render_func)(fluid_synth_t *, int)); /* * misc */ void fluid_synth_settings(fluid_settings_t *settings); /* extern declared in fluid_synth_monopoly.c */ int fluid_synth_noteon_mono_staccato(fluid_synth_t *synth, int chan, int key, int vel); int fluid_synth_noteon_mono_LOCAL(fluid_synth_t *synth, int chan, int key, int vel); int fluid_synth_noteoff_mono_LOCAL(fluid_synth_t *synth, int chan, int key); int fluid_synth_noteon_monopoly_legato(fluid_synth_t *synth, int chan, int fromkey, int tokey, int vel); int fluid_synth_noteoff_monopoly(fluid_synth_t *synth, int chan, int key, char Mono); fluid_voice_t * 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); void fluid_synth_release_voice_on_same_note_LOCAL(fluid_synth_t *synth, int chan, int key); #endif /* _FLUID_SYNTH_H */