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fluid_synth.c
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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
*/
#include "fluid_synth.h"
#include "fluid_sys.h"
#include "fluid_chan.h"
#include "fluid_tuning.h"
#include "fluid_settings.h"
#include "fluid_sfont.h"
#include "fluid_defsfont.h"
#include "fluid_instpatch.h"
#ifdef TRAP_ON_FPE
#define _GNU_SOURCE
#include <fenv.h>
/* seems to not be declared in fenv.h */
extern int feenableexcept(int excepts);
#endif
#define FLUID_API_RETURN(return_value) \
do { fluid_synth_api_exit(synth); \
return return_value; } while (0)
#define FLUID_API_RETURN_IF_CHAN_DISABLED(return_value) \
do { if (FLUID_LIKELY(synth->channel[chan]->mode & FLUID_CHANNEL_ENABLED)) \
{} \
else \
{ FLUID_API_RETURN(return_value); } \
} while (0)
#define FLUID_API_ENTRY_CHAN(fail_value) \
fluid_return_val_if_fail (synth != NULL, fail_value); \
fluid_return_val_if_fail (chan >= 0, fail_value); \
fluid_synth_api_enter(synth); \
if (chan >= synth->midi_channels) { \
FLUID_API_RETURN(fail_value); \
} \
static void fluid_synth_init(void);
static void fluid_synth_api_enter(fluid_synth_t *synth);
static void fluid_synth_api_exit(fluid_synth_t *synth);
static int fluid_synth_noteon_LOCAL(fluid_synth_t *synth, int chan, int key,
int vel);
static int fluid_synth_noteoff_LOCAL(fluid_synth_t *synth, int chan, int key);
static int fluid_synth_cc_LOCAL(fluid_synth_t *synth, int channum, int num);
static int fluid_synth_sysex_midi_tuning(fluid_synth_t *synth, const char *data,
int len, char *response,
int *response_len, int avail_response,
int *handled, int dryrun);
static int fluid_synth_sysex_gs_dt1(fluid_synth_t *synth, const char *data,
int len, char *response,
int *response_len, int avail_response,
int *handled, int dryrun);
static int fluid_synth_sysex_xg(fluid_synth_t *synth, const char *data,
int len, char *response,
int *response_len, int avail_response,
int *handled, int dryrun);
int fluid_synth_all_notes_off_LOCAL(fluid_synth_t *synth, int chan);
static int fluid_synth_all_sounds_off_LOCAL(fluid_synth_t *synth, int chan);
static int fluid_synth_system_reset_LOCAL(fluid_synth_t *synth);
static int fluid_synth_modulate_voices_LOCAL(fluid_synth_t *synth, int chan,
int is_cc, int ctrl);
static int fluid_synth_modulate_voices_all_LOCAL(fluid_synth_t *synth, int chan);
static int fluid_synth_update_channel_pressure_LOCAL(fluid_synth_t *synth, int channum);
static int fluid_synth_update_key_pressure_LOCAL(fluid_synth_t *synth, int chan, int key);
static int fluid_synth_update_pitch_bend_LOCAL(fluid_synth_t *synth, int chan);
static int fluid_synth_update_pitch_wheel_sens_LOCAL(fluid_synth_t *synth, int chan);
static int fluid_synth_set_preset(fluid_synth_t *synth, int chan,
fluid_preset_t *preset);
static int fluid_synth_reverb_get_param(fluid_synth_t *synth, int fx_group,
int param, double *value);
static int fluid_synth_chorus_get_param(fluid_synth_t *synth, int fx_group,
int param, double *value);
static fluid_preset_t *
fluid_synth_get_preset(fluid_synth_t *synth, int sfontnum,
int banknum, int prognum);
static fluid_preset_t *
fluid_synth_get_preset_by_sfont_name(fluid_synth_t *synth, const char *sfontname,
int banknum, int prognum);
static void fluid_synth_update_presets(fluid_synth_t *synth);
static void fluid_synth_update_gain_LOCAL(fluid_synth_t *synth);
static int fluid_synth_update_polyphony_LOCAL(fluid_synth_t *synth, int new_polyphony);
static void init_dither(void);
static FLUID_INLINE int16_t round_clip_to_i16(float x);
static int fluid_synth_render_blocks(fluid_synth_t *synth, int blockcount);
static fluid_voice_t *fluid_synth_free_voice_by_kill_LOCAL(fluid_synth_t *synth);
static void fluid_synth_kill_by_exclusive_class_LOCAL(fluid_synth_t *synth,
fluid_voice_t *new_voice);
static int fluid_synth_sfunload_callback(void *data, unsigned int msec);
static fluid_tuning_t *fluid_synth_get_tuning(fluid_synth_t *synth,
int bank, int prog);
static int fluid_synth_replace_tuning_LOCK(fluid_synth_t *synth,
fluid_tuning_t *tuning,
int bank, int prog, int apply);
static void fluid_synth_replace_tuning_LOCAL(fluid_synth_t *synth,
fluid_tuning_t *old_tuning,
fluid_tuning_t *new_tuning,
int apply, int unref_new);
static void fluid_synth_update_voice_tuning_LOCAL(fluid_synth_t *synth,
fluid_channel_t *channel);
static int fluid_synth_set_tuning_LOCAL(fluid_synth_t *synth, int chan,
fluid_tuning_t *tuning, int apply);
static void fluid_synth_set_gen_LOCAL(fluid_synth_t *synth, int chan,
int param, float value);
static void fluid_synth_stop_LOCAL(fluid_synth_t *synth, unsigned int id);
static int fluid_synth_set_important_channels(fluid_synth_t *synth, const char *channels);
static void fluid_synth_process_awe32_nrpn_LOCAL(fluid_synth_t *synth, int chan, int gen, int data, int data_lsb);
/* Callback handlers for real-time settings */
static void fluid_synth_handle_gain(void *data, const char *name, double value);
static void fluid_synth_handle_polyphony(void *data, const char *name, int value);
static void fluid_synth_handle_device_id(void *data, const char *name, int value);
static void fluid_synth_handle_overflow(void *data, const char *name, double value);
static void fluid_synth_handle_important_channels(void *data, const char *name,
const char *value);
static void fluid_synth_handle_reverb_chorus_num(void *data, const char *name, double value);
static void fluid_synth_handle_reverb_chorus_int(void *data, const char *name, int value);
static void fluid_synth_reset_basic_channel_LOCAL(fluid_synth_t *synth, int chan, int nbr_chan);
static int fluid_synth_check_next_basic_channel(fluid_synth_t *synth, int basicchan, int mode, int val);
static void fluid_synth_set_basic_channel_LOCAL(fluid_synth_t *synth, int basicchan, int mode, int val);
/***************************************************************
*
* GLOBAL
*/
/* has the synth module been initialized? */
/* fluid_atomic_int_t may be anything, so init with {0} to catch most cases */
static fluid_atomic_int_t fluid_synth_initialized = {0};
/* default modulators
* SF2.01 page 52 ff:
*
* There is a set of predefined default modulators. They have to be
* explicitly overridden by the sound font in order to turn them off.
*/
static fluid_mod_t default_vel2att_mod; /* SF2.01 section 8.4.1 */
/*not static */ fluid_mod_t default_vel2filter_mod; /* SF2.01 section 8.4.2 */
static fluid_mod_t default_at2viblfo_mod; /* SF2.01 section 8.4.3 */
static fluid_mod_t default_mod2viblfo_mod; /* SF2.01 section 8.4.4 */
static fluid_mod_t default_att_mod; /* SF2.01 section 8.4.5 */
static fluid_mod_t default_pan_mod; /* SF2.01 section 8.4.6 */
static fluid_mod_t default_expr_mod; /* SF2.01 section 8.4.7 */
static fluid_mod_t default_reverb_mod; /* SF2.01 section 8.4.8 */
static fluid_mod_t default_chorus_mod; /* SF2.01 section 8.4.9 */
static fluid_mod_t default_pitch_bend_mod; /* SF2.01 section 8.4.10 */
static fluid_mod_t custom_balance_mod; /* Non-standard modulator */
/* custom_breath2att_modulator is not a default modulator specified in SF
it is intended to replace default_vel2att_mod on demand using
API fluid_set_breath_mode() or command shell setbreathmode.
*/
static fluid_mod_t custom_breath2att_mod;
/* reverb presets */
static const fluid_revmodel_presets_t revmodel_preset[] =
{
/* name */ /* roomsize */ /* damp */ /* width */ /* level */
{ "Test 1", 0.2f, 0.0f, 0.5f, 0.9f },
{ "Test 2", 0.4f, 0.2f, 0.5f, 0.8f },
{ "Test 3", 0.6f, 0.4f, 0.5f, 0.7f },
{ "Test 4", 0.8f, 0.7f, 0.5f, 0.6f },
{ "Test 5", 0.8f, 1.0f, 0.5f, 0.5f },
};
/***************************************************************
*
* INITIALIZATION & UTILITIES
*/
void fluid_synth_settings(fluid_settings_t *settings)
{
fluid_settings_register_int(settings, "synth.verbose", 0, 0, 1, FLUID_HINT_TOGGLED);
fluid_settings_register_int(settings, "synth.reverb.active", 1, 0, 1, FLUID_HINT_TOGGLED);
fluid_settings_register_num(settings, "synth.reverb.room-size", FLUID_REVERB_DEFAULT_ROOMSIZE, 0.0, 1.0, 0);
fluid_settings_register_num(settings, "synth.reverb.damp", FLUID_REVERB_DEFAULT_DAMP, 0.0, 1.0, 0);
fluid_settings_register_num(settings, "synth.reverb.width", FLUID_REVERB_DEFAULT_WIDTH, 0.0, 100.0, 0);
fluid_settings_register_num(settings, "synth.reverb.level", FLUID_REVERB_DEFAULT_LEVEL, 0.0, 1.0, 0);
fluid_settings_register_int(settings, "synth.chorus.active", 1, 0, 1, FLUID_HINT_TOGGLED);
fluid_settings_register_int(settings, "synth.chorus.nr", FLUID_CHORUS_DEFAULT_N, 0, 99, 0);
fluid_settings_register_num(settings, "synth.chorus.level", FLUID_CHORUS_DEFAULT_LEVEL, 0.0, 10.0, 0);
fluid_settings_register_num(settings, "synth.chorus.speed", FLUID_CHORUS_DEFAULT_SPEED, 0.1, 5.0, 0);
fluid_settings_register_num(settings, "synth.chorus.depth", FLUID_CHORUS_DEFAULT_DEPTH, 0.0, 256.0, 0);
fluid_settings_register_int(settings, "synth.ladspa.active", 0, 0, 1, FLUID_HINT_TOGGLED);
fluid_settings_register_int(settings, "synth.lock-memory", 1, 0, 1, FLUID_HINT_TOGGLED);
fluid_settings_register_str(settings, "midi.portname", "", 0);
#ifdef DEFAULT_SOUNDFONT
fluid_settings_register_str(settings, "synth.default-soundfont", DEFAULT_SOUNDFONT, 0);
#endif
fluid_settings_register_int(settings, "synth.polyphony", 256, 1, 65535, 0);
fluid_settings_register_int(settings, "synth.midi-channels", 16, 16, 256, 0);
fluid_settings_register_num(settings, "synth.gain", 0.2, 0.0, 10.0, 0);
fluid_settings_register_int(settings, "synth.audio-channels", 1, 1, 128, 0);
fluid_settings_register_int(settings, "synth.audio-groups", 1, 1, 128, 0);
fluid_settings_register_int(settings, "synth.effects-channels", 2, 2, 2, 0);
fluid_settings_register_int(settings, "synth.effects-groups", 1, 1, 128, 0);
fluid_settings_register_num(settings, "synth.sample-rate", 44100.0, 8000.0, 96000.0, 0);
fluid_settings_register_int(settings, "synth.device-id", 16, 0, 127, 0);
#ifdef ENABLE_MIXER_THREADS
fluid_settings_register_int(settings, "synth.cpu-cores", 1, 1, 256, 0);
#else
fluid_settings_register_int(settings, "synth.cpu-cores", 1, 1, 1, 0);
#endif
fluid_settings_register_int(settings, "synth.min-note-length", 10, 0, 65535, 0);
fluid_settings_register_int(settings, "synth.threadsafe-api", 1, 0, 1, FLUID_HINT_TOGGLED);
fluid_settings_register_num(settings, "synth.overflow.percussion", 4000, -10000, 10000, 0);
fluid_settings_register_num(settings, "synth.overflow.sustained", -1000, -10000, 10000, 0);
fluid_settings_register_num(settings, "synth.overflow.released", -2000, -10000, 10000, 0);
fluid_settings_register_num(settings, "synth.overflow.age", 1000, -10000, 10000, 0);
fluid_settings_register_num(settings, "synth.overflow.volume", 500, -10000, 10000, 0);
fluid_settings_register_num(settings, "synth.overflow.important", 5000, -50000, 50000, 0);
fluid_settings_register_str(settings, "synth.overflow.important-channels", "", 0);
fluid_settings_register_str(settings, "synth.midi-bank-select", "gs", 0);
fluid_settings_add_option(settings, "synth.midi-bank-select", "gm");
fluid_settings_add_option(settings, "synth.midi-bank-select", "gs");
fluid_settings_add_option(settings, "synth.midi-bank-select", "xg");
fluid_settings_add_option(settings, "synth.midi-bank-select", "mma");
fluid_settings_register_int(settings, "synth.dynamic-sample-loading", 0, 0, 1, FLUID_HINT_TOGGLED);
fluid_settings_register_int(settings, "synth.note-cut", 0, 0, 2, 0);
}
/**
* Get FluidSynth runtime version.
* @param major Location to store major number
* @param minor Location to store minor number
* @param micro Location to store micro number
*/
void fluid_version(int *major, int *minor, int *micro)
{
*major = FLUIDSYNTH_VERSION_MAJOR;
*minor = FLUIDSYNTH_VERSION_MINOR;
*micro = FLUIDSYNTH_VERSION_MICRO;
}
/**
* Get FluidSynth runtime version as a string.
* @return FluidSynth version string, which is internal and should not be
* modified or freed.
*/
char *
fluid_version_str(void)
{
return FLUIDSYNTH_VERSION;
}
/*
* void fluid_synth_init
*
* Does all the initialization for this module.
*/
static void
fluid_synth_init(void)
{
#ifdef TRAP_ON_FPE
#if !defined(__GLIBC__) && defined(__linux__)
#warning "Trap on FPE is only supported when using glibc!"
#else
/* Turn on floating point exception traps */
feenableexcept(FE_DIVBYZERO | FE_OVERFLOW | FE_INVALID);
#endif
#endif
init_dither();
/* custom_breath2att_mod is not a default modulator specified in SF2.01.
it is intended to replace default_vel2att_mod on demand using
API fluid_set_breath_mode() or command shell setbreathmode.
*/
fluid_mod_set_source1(&custom_breath2att_mod, /* The modulator we are programming here */
BREATH_MSB, /* Source. breath MSB corresponds to 2. */
FLUID_MOD_CC /* MIDI continuous controller */
| FLUID_MOD_CONCAVE /* Curve shape. Corresponds to 'type=1' */
| FLUID_MOD_UNIPOLAR /* Polarity. Corresponds to 'P=0' */
| FLUID_MOD_NEGATIVE /* Direction. Corresponds to 'D=1' */
);
fluid_mod_set_source2(&custom_breath2att_mod, 0, 0); /* No 2nd source */
fluid_mod_set_dest(&custom_breath2att_mod, GEN_ATTENUATION); /* Target: Initial attenuation */
fluid_mod_set_amount(&custom_breath2att_mod, FLUID_PEAK_ATTENUATION); /* Modulation amount: 960 */
/* SF2.01 page 53 section 8.4.1: MIDI Note-On Velocity to Initial Attenuation */
fluid_mod_set_source1(&default_vel2att_mod, /* The modulator we are programming here */
FLUID_MOD_VELOCITY, /* Source. VELOCITY corresponds to 'index=2'. */
FLUID_MOD_GC /* Not a MIDI continuous controller */
| FLUID_MOD_CONCAVE /* Curve shape. Corresponds to 'type=1' */
| FLUID_MOD_UNIPOLAR /* Polarity. Corresponds to 'P=0' */
| FLUID_MOD_NEGATIVE /* Direction. Corresponds to 'D=1' */
);
fluid_mod_set_source2(&default_vel2att_mod, 0, 0); /* No 2nd source */
fluid_mod_set_dest(&default_vel2att_mod, GEN_ATTENUATION); /* Target: Initial attenuation */
fluid_mod_set_amount(&default_vel2att_mod, FLUID_PEAK_ATTENUATION); /* Modulation amount: 960 */
/* SF2.01 page 53 section 8.4.2: MIDI Note-On Velocity to Filter Cutoff
* Have to make a design decision here. The specs don't make any sense this way or another.
* One sound font, 'Kingston Piano', which has been praised for its quality, tries to
* override this modulator with an amount of 0 and positive polarity (instead of what
* the specs say, D=1) for the secondary source.
* So if we change the polarity to 'positive', one of the best free sound fonts works...
*/
fluid_mod_set_source1(&default_vel2filter_mod, FLUID_MOD_VELOCITY, /* Index=2 */
FLUID_MOD_GC /* CC=0 */
| FLUID_MOD_LINEAR /* type=0 */
| FLUID_MOD_UNIPOLAR /* P=0 */
| FLUID_MOD_NEGATIVE /* D=1 */
);
fluid_mod_set_source2(&default_vel2filter_mod, FLUID_MOD_VELOCITY, /* Index=2 */
FLUID_MOD_GC /* CC=0 */
| FLUID_MOD_SWITCH /* type=3 */
| FLUID_MOD_UNIPOLAR /* P=0 */
// do not remove | FLUID_MOD_NEGATIVE /* D=1 */
| FLUID_MOD_POSITIVE /* D=0 */
);
fluid_mod_set_dest(&default_vel2filter_mod, GEN_FILTERFC); /* Target: Initial filter cutoff */
fluid_mod_set_amount(&default_vel2filter_mod, -2400);
/* SF2.01 page 53 section 8.4.3: MIDI Channel pressure to Vibrato LFO pitch depth */
fluid_mod_set_source1(&default_at2viblfo_mod, FLUID_MOD_CHANNELPRESSURE, /* Index=13 */
FLUID_MOD_GC /* CC=0 */
| FLUID_MOD_LINEAR /* type=0 */
| FLUID_MOD_UNIPOLAR /* P=0 */
| FLUID_MOD_POSITIVE /* D=0 */
);
fluid_mod_set_source2(&default_at2viblfo_mod, 0, 0); /* no second source */
fluid_mod_set_dest(&default_at2viblfo_mod, GEN_VIBLFOTOPITCH); /* Target: Vib. LFO => pitch */
fluid_mod_set_amount(&default_at2viblfo_mod, 50);
/* SF2.01 page 53 section 8.4.4: Mod wheel (Controller 1) to Vibrato LFO pitch depth */
fluid_mod_set_source1(&default_mod2viblfo_mod, MODULATION_MSB, /* Index=1 */
FLUID_MOD_CC /* CC=1 */
| FLUID_MOD_LINEAR /* type=0 */
| FLUID_MOD_UNIPOLAR /* P=0 */
| FLUID_MOD_POSITIVE /* D=0 */
);
fluid_mod_set_source2(&default_mod2viblfo_mod, 0, 0); /* no second source */
fluid_mod_set_dest(&default_mod2viblfo_mod, GEN_VIBLFOTOPITCH); /* Target: Vib. LFO => pitch */
fluid_mod_set_amount(&default_mod2viblfo_mod, 50);
/* SF2.01 page 55 section 8.4.5: MIDI continuous controller 7 to initial attenuation*/
fluid_mod_set_source1(&default_att_mod, VOLUME_MSB, /* index=7 */
FLUID_MOD_CC /* CC=1 */
| FLUID_MOD_CONCAVE /* type=1 */
| FLUID_MOD_UNIPOLAR /* P=0 */
| FLUID_MOD_NEGATIVE /* D=1 */
);
fluid_mod_set_source2(&default_att_mod, 0, 0); /* No second source */
fluid_mod_set_dest(&default_att_mod, GEN_ATTENUATION); /* Target: Initial attenuation */
fluid_mod_set_amount(&default_att_mod, FLUID_PEAK_ATTENUATION); /* Amount: 960 */
/* SF2.01 page 55 section 8.4.6 MIDI continuous controller 10 to Pan Position */
fluid_mod_set_source1(&default_pan_mod, PAN_MSB, /* index=10 */
FLUID_MOD_CC /* CC=1 */
| FLUID_MOD_LINEAR /* type=0 */
| FLUID_MOD_BIPOLAR /* P=1 */
| FLUID_MOD_POSITIVE /* D=0 */
);
fluid_mod_set_source2(&default_pan_mod, 0, 0); /* No second source */
fluid_mod_set_dest(&default_pan_mod, GEN_PAN); /* Target: pan */
/* Amount: 500. The SF specs $8.4.6, p. 55 says: "Amount = 1000
tenths of a percent". The center value (64) corresponds to 50%,
so it follows that amount = 50% x 1000/% = 500. */
fluid_mod_set_amount(&default_pan_mod, 500.0);
/* SF2.01 page 55 section 8.4.7: MIDI continuous controller 11 to initial attenuation*/
fluid_mod_set_source1(&default_expr_mod, EXPRESSION_MSB, /* index=11 */
FLUID_MOD_CC /* CC=1 */
| FLUID_MOD_CONCAVE /* type=1 */
| FLUID_MOD_UNIPOLAR /* P=0 */
| FLUID_MOD_NEGATIVE /* D=1 */
);
fluid_mod_set_source2(&default_expr_mod, 0, 0); /* No second source */
fluid_mod_set_dest(&default_expr_mod, GEN_ATTENUATION); /* Target: Initial attenuation */
fluid_mod_set_amount(&default_expr_mod, FLUID_PEAK_ATTENUATION); /* Amount: 960 */
/* SF2.01 page 55 section 8.4.8: MIDI continuous controller 91 to Reverb send */
fluid_mod_set_source1(&default_reverb_mod, EFFECTS_DEPTH1, /* index=91 */
FLUID_MOD_CC /* CC=1 */
| FLUID_MOD_LINEAR /* type=0 */
| FLUID_MOD_UNIPOLAR /* P=0 */
| FLUID_MOD_POSITIVE /* D=0 */
);
fluid_mod_set_source2(&default_reverb_mod, 0, 0); /* No second source */
fluid_mod_set_dest(&default_reverb_mod, GEN_REVERBSEND); /* Target: Reverb send */
fluid_mod_set_amount(&default_reverb_mod, 200); /* Amount: 200 ('tenths of a percent') */
/* SF2.01 page 55 section 8.4.9: MIDI continuous controller 93 to Chorus send */
fluid_mod_set_source1(&default_chorus_mod, EFFECTS_DEPTH3, /* index=93 */
FLUID_MOD_CC /* CC=1 */
| FLUID_MOD_LINEAR /* type=0 */
| FLUID_MOD_UNIPOLAR /* P=0 */
| FLUID_MOD_POSITIVE /* D=0 */
);
fluid_mod_set_source2(&default_chorus_mod, 0, 0); /* No second source */
fluid_mod_set_dest(&default_chorus_mod, GEN_CHORUSSEND); /* Target: Chorus */
fluid_mod_set_amount(&default_chorus_mod, 200); /* Amount: 200 ('tenths of a percent') */
/* SF2.01 page 57 section 8.4.10 MIDI Pitch Wheel to Initial Pitch ... */
/* Initial Pitch is not a "standard" generator, because it isn't mentioned in the
list of generators in the SF2 specifications. That's why destination Initial Pitch
is replaced here by fine tune generator.
*/
fluid_mod_set_source1(&default_pitch_bend_mod, FLUID_MOD_PITCHWHEEL, /* Index=14 */
FLUID_MOD_GC /* CC =0 */
| FLUID_MOD_LINEAR /* type=0 */
| FLUID_MOD_BIPOLAR /* P=1 */
| FLUID_MOD_POSITIVE /* D=0 */
);
fluid_mod_set_source2(&default_pitch_bend_mod, FLUID_MOD_PITCHWHEELSENS, /* Index = 16 */
FLUID_MOD_GC /* CC=0 */
| FLUID_MOD_LINEAR /* type=0 */
| FLUID_MOD_UNIPOLAR /* P=0 */
| FLUID_MOD_POSITIVE /* D=0 */
);
/* Also see the comment in gen.h about GEN_PITCH */
fluid_mod_set_dest(&default_pitch_bend_mod, GEN_FINETUNE); /* Destination: Fine Tune */
fluid_mod_set_amount(&default_pitch_bend_mod, 12700.0); /* Amount: 12700 cents */
/* Non-standard MIDI continuous controller 8 to channel stereo balance */
fluid_mod_set_source1(&custom_balance_mod, BALANCE_MSB, /* Index=8 */
FLUID_MOD_CC /* CC=1 */
| FLUID_MOD_CONCAVE /* type=1 */
| FLUID_MOD_BIPOLAR /* P=1 */
| FLUID_MOD_POSITIVE /* D=0 */
);
fluid_mod_set_source2(&custom_balance_mod, 0, 0);
fluid_mod_set_dest(&custom_balance_mod, GEN_CUSTOM_BALANCE); /* Destination: stereo balance */
/* Amount: 96 dB of attenuation (on the opposite channel) */
fluid_mod_set_amount(&custom_balance_mod, FLUID_PEAK_ATTENUATION); /* Amount: 960 */
#if defined(LIBINSTPATCH_SUPPORT)
/* defer libinstpatch init to fluid_instpatch.c to avoid #include "libinstpatch.h" */
if(!fluid_instpatch_supports_multi_init())
{
fluid_instpatch_init();
}
#endif
}
static FLUID_INLINE unsigned int fluid_synth_get_ticks(fluid_synth_t *synth)
{
return fluid_atomic_int_get(&synth->ticks_since_start);
}
static FLUID_INLINE void fluid_synth_add_ticks(fluid_synth_t *synth, int val)
{
fluid_atomic_int_add(&synth->ticks_since_start, val);
}
/***************************************************************
* FLUID SAMPLE TIMERS
* Timers that use written audio data as timing reference
*/
struct _fluid_sample_timer_t
{
fluid_sample_timer_t *next; /* Single linked list of timers */
unsigned long starttick;
fluid_timer_callback_t callback;
void *data;
int isfinished;
};
/*
* fluid_sample_timer_process - called when synth->ticks is updated
*/
static void fluid_sample_timer_process(fluid_synth_t *synth)
{
fluid_sample_timer_t *st;
long msec;
int cont;
unsigned int ticks = fluid_synth_get_ticks(synth);
for(st = synth->sample_timers; st; st = st->next)
{
if(st->isfinished)
{
continue;
}
msec = (long)(1000.0 * ((double)(ticks - st->starttick)) / synth->sample_rate);
cont = (*st->callback)(st->data, msec);
if(cont == 0)
{
st->isfinished = 1;
}
}
}
fluid_sample_timer_t *new_fluid_sample_timer(fluid_synth_t *synth, fluid_timer_callback_t callback, void *data)
{
fluid_sample_timer_t *result = FLUID_NEW(fluid_sample_timer_t);
if(result == NULL)
{
FLUID_LOG(FLUID_ERR, "Out of memory");
return NULL;
}
fluid_sample_timer_reset(synth, result);
result->data = data;
result->callback = callback;
result->next = synth->sample_timers;
synth->sample_timers = result;
return result;
}
void delete_fluid_sample_timer(fluid_synth_t *synth, fluid_sample_timer_t *timer)
{
fluid_sample_timer_t **ptr;
fluid_return_if_fail(synth != NULL);
fluid_return_if_fail(timer != NULL);
ptr = &synth->sample_timers;
while(*ptr)
{
if(*ptr == timer)
{
*ptr = timer->next;
FLUID_FREE(timer);
return;
}
ptr = &((*ptr)->next);
}
}
void fluid_sample_timer_reset(fluid_synth_t *synth, fluid_sample_timer_t *timer)
{
timer->starttick = fluid_synth_get_ticks(synth);
timer->isfinished = 0;
}
/***************************************************************
*
* FLUID SYNTH
*/
static FLUID_INLINE void
fluid_synth_update_mixer(fluid_synth_t *synth, fluid_rvoice_function_t method, int intparam,
fluid_real_t realparam)
{
fluid_return_if_fail(synth != NULL && synth->eventhandler != NULL);
fluid_return_if_fail(synth->eventhandler->mixer != NULL);
fluid_rvoice_eventhandler_push_int_real(synth->eventhandler, method,
synth->eventhandler->mixer,
intparam, realparam);
}
static FLUID_INLINE unsigned int fluid_synth_get_min_note_length_LOCAL(fluid_synth_t *synth)
{
int i;
fluid_settings_getint(synth->settings, "synth.min-note-length", &i);
return (unsigned int)(i * synth->sample_rate / 1000.0f);
}
/**
* Create new FluidSynth instance.
* @param settings Configuration parameters to use (used directly).
* @return New FluidSynth instance or NULL on error
*
* @note The @p settings parameter is used directly, but the synth does not take ownership of it.
* Hence, the caller is responsible for freeing it, when no longer needed.
* Further note that you may modify FluidSettings of the
* @p settings instance. However, only those FluidSettings marked as 'realtime' will
* affect the synth immediately. See the \ref fluidsettings for more details.
*
* @warning The @p settings object should only be used by a single synth at a time. I.e. creating
* multiple synth instances with a single @p settings object causes undefined behavior. Once the
* "single synth" has been deleted, you may use the @p settings object again for another synth.
*/
fluid_synth_t *
new_fluid_synth(fluid_settings_t *settings)
{
fluid_synth_t *synth;
fluid_sfloader_t *loader;
char *important_channels;
int i, prio_level = 0;
int with_ladspa = 0;
double sample_rate_min, sample_rate_max;
/* initialize all the conversion tables and other stuff */
if(fluid_atomic_int_compare_and_exchange(&fluid_synth_initialized, 0, 1))
{
fluid_synth_init();
}
/* allocate a new synthesizer object */
synth = FLUID_NEW(fluid_synth_t);
if(synth == NULL)
{
FLUID_LOG(FLUID_ERR, "Out of memory");
return NULL;
}
FLUID_MEMSET(synth, 0, sizeof(fluid_synth_t));
#if defined(LIBINSTPATCH_SUPPORT)
if(fluid_instpatch_supports_multi_init())
{
fluid_instpatch_init();
}
#endif
fluid_rec_mutex_init(synth->mutex);
fluid_settings_getint(settings, "synth.threadsafe-api", &synth->use_mutex);
synth->public_api_count = 0;
synth->settings = settings;
fluid_settings_getint(settings, "synth.reverb.active", &synth->with_reverb);
fluid_settings_getint(settings, "synth.chorus.active", &synth->with_chorus);
fluid_settings_getint(settings, "synth.verbose", &synth->verbose);
fluid_settings_getint(settings, "synth.polyphony", &synth->polyphony);
fluid_settings_getnum(settings, "synth.sample-rate", &synth->sample_rate);
fluid_settings_getnum_range(settings, "synth.sample-rate", &sample_rate_min, &sample_rate_max);
fluid_settings_getint(settings, "synth.midi-channels", &synth->midi_channels);
fluid_settings_getint(settings, "synth.audio-channels", &synth->audio_channels);
fluid_settings_getint(settings, "synth.audio-groups", &synth->audio_groups);
fluid_settings_getint(settings, "synth.effects-channels", &synth->effects_channels);
fluid_settings_getint(settings, "synth.effects-groups", &synth->effects_groups);
fluid_settings_getnum_float(settings, "synth.gain", &synth->gain);
fluid_settings_getint(settings, "synth.device-id", &synth->device_id);
fluid_settings_getint(settings, "synth.cpu-cores", &synth->cores);
fluid_settings_getnum_float(settings, "synth.overflow.percussion", &synth->overflow.percussion);
fluid_settings_getnum_float(settings, "synth.overflow.released", &synth->overflow.released);
fluid_settings_getnum_float(settings, "synth.overflow.sustained", &synth->overflow.sustained);
fluid_settings_getnum_float(settings, "synth.overflow.volume", &synth->overflow.volume);
fluid_settings_getnum_float(settings, "synth.overflow.age", &synth->overflow.age);
fluid_settings_getnum_float(settings, "synth.overflow.important", &synth->overflow.important);
fluid_settings_getint(settings, "synth.note-cut", &i);
synth->msgs_note_cut_mode = i;
/* register the callbacks */
fluid_settings_callback_num(settings, "synth.gain",
fluid_synth_handle_gain, synth);
fluid_settings_callback_int(settings, "synth.polyphony",
fluid_synth_handle_polyphony, synth);
fluid_settings_callback_int(settings, "synth.device-id",
fluid_synth_handle_device_id, synth);
fluid_settings_callback_num(settings, "synth.overflow.percussion",
fluid_synth_handle_overflow, synth);
fluid_settings_callback_num(settings, "synth.overflow.sustained",
fluid_synth_handle_overflow, synth);
fluid_settings_callback_num(settings, "synth.overflow.released",
fluid_synth_handle_overflow, synth);
fluid_settings_callback_num(settings, "synth.overflow.age",
fluid_synth_handle_overflow, synth);
fluid_settings_callback_num(settings, "synth.overflow.volume",
fluid_synth_handle_overflow, synth);
fluid_settings_callback_num(settings, "synth.overflow.important",
fluid_synth_handle_overflow, synth);
fluid_settings_callback_str(settings, "synth.overflow.important-channels",
fluid_synth_handle_important_channels, synth);
fluid_settings_callback_num(settings, "synth.reverb.room-size",
fluid_synth_handle_reverb_chorus_num, synth);
fluid_settings_callback_num(settings, "synth.reverb.damp",
fluid_synth_handle_reverb_chorus_num, synth);
fluid_settings_callback_num(settings, "synth.reverb.width",
fluid_synth_handle_reverb_chorus_num, synth);
fluid_settings_callback_num(settings, "synth.reverb.level",
fluid_synth_handle_reverb_chorus_num, synth);
fluid_settings_callback_int(settings, "synth.reverb.active",
fluid_synth_handle_reverb_chorus_int, synth);
fluid_settings_callback_int(settings, "synth.chorus.active",
fluid_synth_handle_reverb_chorus_int, synth);
fluid_settings_callback_int(settings, "synth.chorus.nr",
fluid_synth_handle_reverb_chorus_int, synth);
fluid_settings_callback_num(settings, "synth.chorus.level",
fluid_synth_handle_reverb_chorus_num, synth);
fluid_settings_callback_num(settings, "synth.chorus.depth",
fluid_synth_handle_reverb_chorus_num, synth);
fluid_settings_callback_num(settings, "synth.chorus.speed",
fluid_synth_handle_reverb_chorus_num, synth);
/* do some basic sanity checking on the settings */
if(synth->midi_channels % 16 != 0)
{
int n = synth->midi_channels / 16;
synth->midi_channels = (n + 1) * 16;
fluid_settings_setint(settings, "synth.midi-channels", synth->midi_channels);
FLUID_LOG(FLUID_WARN, "Requested number of MIDI channels is not a multiple of 16. "
"I'll increase the number of channels to the next multiple.");
}
if(synth->audio_channels < 1)
{
FLUID_LOG(FLUID_WARN, "Requested number of audio channels is smaller than 1. "
"Changing this setting to 1.");
synth->audio_channels = 1;
}
else if(synth->audio_channels > 128)
{
FLUID_LOG(FLUID_WARN, "Requested number of audio channels is too big (%d). "
"Limiting this setting to 128.", synth->audio_channels);
synth->audio_channels = 128;
}
if(synth->audio_groups < 1)
{
FLUID_LOG(FLUID_WARN, "Requested number of audio groups is smaller than 1. "
"Changing this setting to 1.");
synth->audio_groups = 1;
}
else if(synth->audio_groups > 128)
{
FLUID_LOG(FLUID_WARN, "Requested number of audio groups is too big (%d). "
"Limiting this setting to 128.", synth->audio_groups);
synth->audio_groups = 128;
}
if(synth->effects_channels < 2)
{
FLUID_LOG(FLUID_WARN, "Invalid number of effects channels (%d)."
"Setting effects channels to 2.", synth->effects_channels);
synth->effects_channels = 2;
}
/*
number of buffers rendered by the mixer is determined by synth->audio_groups.
audio from MIDI channel is rendered, mapped and mixed in these buffers.
Typically synth->audio_channels is only used by audio driver and should be set
to the same value that synth->audio_groups. In some situation using LADSPA,
it is best to diminish audio-channels so that the driver will be able to pass
the audio to audio devices in the case these devices have a limited number of
audio channels.
audio-channels must not be greater then audio-groups, otherwise these
audio output above audio-groups will not be rendered by the mixeur.
*/
if(synth->audio_channels > synth->audio_groups)
{
synth->audio_channels = synth->audio_groups;
fluid_settings_setint(settings, "synth.audio-channels", synth->audio_channels);
FLUID_LOG(FLUID_WARN, "Requested audio-channels to high. "
"Limiting this setting to audio-groups.");
}
if(fluid_settings_dupstr(settings, "synth.overflow.important-channels",
&important_channels) == FLUID_OK)
{
if(fluid_synth_set_important_channels(synth, important_channels) != FLUID_OK)
{
FLUID_LOG(FLUID_WARN, "Failed to set overflow important channels");
}
FLUID_FREE(important_channels);
}
/* as soon as the synth is created it starts playing. */
synth->state = FLUID_SYNTH_PLAYING;
synth->fromkey_portamento = INVALID_NOTE; /* disable portamento */
fluid_atomic_int_set(&synth->ticks_since_start, 0);
synth->tuning = NULL;
fluid_private_init(synth->tuning_iter);
/* Initialize multi-core variables if multiple cores enabled */
if(synth->cores > 1)
{
fluid_settings_getint(synth->settings, "audio.realtime-prio", &prio_level);
}
/* Allocate event queue for rvoice mixer */
/* In an overflow situation, a new voice takes about 50 spaces in the queue! */
synth->eventhandler = new_fluid_rvoice_eventhandler(synth->polyphony * 64,
synth->polyphony, synth->audio_groups,
synth->effects_channels, synth->effects_groups,
(fluid_real_t)sample_rate_max, synth->sample_rate,
synth->cores - 1, prio_level);
if(synth->eventhandler == NULL)
{
goto error_recovery;
}
/* Setup the list of default modulators.
* Needs to happen after eventhandler has been set up, as fluid_synth_enter_api is called in the process */
synth->default_mod = NULL;
fluid_synth_add_default_mod(synth, &default_vel2att_mod, FLUID_SYNTH_ADD);
fluid_synth_add_default_mod(synth, &default_vel2filter_mod, FLUID_SYNTH_ADD);
fluid_synth_add_default_mod(synth, &default_at2viblfo_mod, FLUID_SYNTH_ADD);
fluid_synth_add_default_mod(synth, &default_mod2viblfo_mod, FLUID_SYNTH_ADD);
fluid_synth_add_default_mod(synth, &default_att_mod, FLUID_SYNTH_ADD);
fluid_synth_add_default_mod(synth, &default_pan_mod, FLUID_SYNTH_ADD);
fluid_synth_add_default_mod(synth, &default_expr_mod, FLUID_SYNTH_ADD);
fluid_synth_add_default_mod(synth, &default_reverb_mod, FLUID_SYNTH_ADD);
fluid_synth_add_default_mod(synth, &default_chorus_mod, FLUID_SYNTH_ADD);
fluid_synth_add_default_mod(synth, &default_pitch_bend_mod, FLUID_SYNTH_ADD);
fluid_synth_add_default_mod(synth, &custom_balance_mod, FLUID_SYNTH_ADD);
/* Create and initialize the Fx unit.*/
fluid_settings_getint(settings, "synth.ladspa.active", &with_ladspa);
if(with_ladspa)
{
#ifdef LADSPA
synth->ladspa_fx = new_fluid_ladspa_fx(synth->sample_rate,
FLUID_MIXER_MAX_BUFFERS_DEFAULT * FLUID_BUFSIZE);
if(synth->ladspa_fx == NULL)
{
FLUID_LOG(FLUID_ERR, "Out of memory");
goto error_recovery;
}
fluid_rvoice_mixer_set_ladspa(synth->eventhandler->mixer, synth->ladspa_fx,
synth->audio_groups);
#else /* LADSPA */
FLUID_LOG(FLUID_WARN, "FluidSynth has not been compiled with LADSPA support");
#endif /* LADSPA */
}
/* allocate and add the dls sfont loader */
#ifdef LIBINSTPATCH_SUPPORT
loader = new_fluid_instpatch_loader(settings);
if(loader == NULL)
{
FLUID_LOG(FLUID_WARN, "Failed to create the instpatch SoundFont loader");
}
else
{
fluid_synth_add_sfloader(synth, loader);
}
#endif
/* allocate and add the default sfont loader */
loader = new_fluid_defsfloader(settings);
if(loader == NULL)
{
FLUID_LOG(FLUID_WARN, "Failed to create the default SoundFont loader");
}
else
{
fluid_synth_add_sfloader(synth, loader);
}
/* allocate all channel objects */
synth->channel = FLUID_ARRAY(fluid_channel_t *, synth->midi_channels);
if(synth->channel == NULL)
{
FLUID_LOG(FLUID_ERR, "Out of memory");
goto error_recovery;
}
FLUID_MEMSET(synth->channel, 0, synth->midi_channels * sizeof(*synth->channel));
for(i = 0; i < synth->midi_channels; i++)
{
synth->channel[i] = new_fluid_channel(synth, i);
if(synth->channel[i] == NULL)
{
goto error_recovery;
}
}
/* allocate all synthesis processes */
synth->nvoice = synth->polyphony;
synth->voice = FLUID_ARRAY(fluid_voice_t *, synth->nvoice);
if(synth->voice == NULL)
{
goto error_recovery;
}
FLUID_MEMSET(synth->voice, 0, synth->nvoice * sizeof(*synth->voice));
for(i = 0; i < synth->nvoice; i++)
{
synth->voice[i] = new_fluid_voice(synth->eventhandler, synth->sample_rate);
if(synth->voice[i] == NULL)
{
goto error_recovery;
}
}
/* sets a default basic channel */
/* Sets one basic channel: basic channel 0, mode 0 (Omni On - Poly) */
/* (i.e all channels are polyphonic) */
/* Must be called after channel objects allocation */
fluid_synth_set_basic_channel_LOCAL(synth, 0, FLUID_CHANNEL_MODE_OMNION_POLY,
synth->midi_channels);
synth->min_note_length_ticks = fluid_synth_get_min_note_length_LOCAL(synth);
fluid_synth_update_mixer(synth, fluid_rvoice_mixer_set_polyphony,
synth->polyphony, 0.0f);
fluid_synth_reverb_on(synth, -1, synth->with_reverb);
fluid_synth_chorus_on(synth, -1, synth->with_chorus);
synth->cur = FLUID_BUFSIZE;
synth->curmax = 0;
synth->dither_index = 0;
{
double values[FLUID_REVERB_PARAM_LAST];
fluid_settings_getnum(settings, "synth.reverb.room-size", &values[FLUID_REVERB_ROOMSIZE]);
fluid_settings_getnum(settings, "synth.reverb.damp", &values[FLUID_REVERB_DAMP]);
fluid_settings_getnum(settings, "synth.reverb.width", &values[FLUID_REVERB_WIDTH]);
fluid_settings_getnum(settings, "synth.reverb.level", &values[FLUID_REVERB_LEVEL]);
fluid_synth_set_reverb_full(synth, -1, FLUID_REVMODEL_SET_ALL, values);
}
{
double values[FLUID_CHORUS_PARAM_LAST];
fluid_settings_getint(settings, "synth.chorus.nr", &i);
values[FLUID_CHORUS_NR] = (double)i;
fluid_settings_getnum(settings, "synth.chorus.level", &values[FLUID_CHORUS_LEVEL]);
fluid_settings_getnum(settings, "synth.chorus.speed", &values[FLUID_CHORUS_SPEED]);
fluid_settings_getnum(settings, "synth.chorus.depth", &values[FLUID_CHORUS_DEPTH]);
values[FLUID_CHORUS_TYPE] = (double)FLUID_CHORUS_DEFAULT_TYPE;
fluid_synth_set_chorus_full(synth, -1, FLUID_CHORUS_SET_ALL, values);
}
synth->bank_select = FLUID_BANK_STYLE_GS;
if(fluid_settings_str_equal(settings, "synth.midi-bank-select", "gm"))
{
synth->bank_select = FLUID_BANK_STYLE_GM;
}
else if(fluid_settings_str_equal(settings, "synth.midi-bank-select", "gs"))
{
synth->bank_select = FLUID_BANK_STYLE_GS;
}
else if(fluid_settings_str_equal(settings, "synth.midi-bank-select", "xg"))
{
synth->bank_select = FLUID_BANK_STYLE_XG;