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Diffstat (limited to 'libs/fluidsynth/src/fluid_gen.c')
| -rw-r--r-- | libs/fluidsynth/src/fluid_gen.c | 149 |
1 files changed, 149 insertions, 0 deletions
diff --git a/libs/fluidsynth/src/fluid_gen.c b/libs/fluidsynth/src/fluid_gen.c new file mode 100644 index 0000000000..0f1413eab2 --- /dev/null +++ b/libs/fluidsynth/src/fluid_gen.c @@ -0,0 +1,149 @@ +/* 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 Library General Public License + * as published by the Free Software Foundation; either version 2 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 + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library 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_gen.h" +#include "fluid_chan.h" + + +/* See SFSpec21 $8.1.3 */ +fluid_gen_info_t fluid_gen_info[] = { + /* number/name init scale min max def */ + { GEN_STARTADDROFS, 1, 1, 0.0f, 1e10f, 0.0f }, + { GEN_ENDADDROFS, 1, 1, -1e10f, 0.0f, 0.0f }, + { GEN_STARTLOOPADDROFS, 1, 1, -1e10f, 1e10f, 0.0f }, + { GEN_ENDLOOPADDROFS, 1, 1, -1e10f, 1e10f, 0.0f }, + { GEN_STARTADDRCOARSEOFS, 0, 1, 0.0f, 1e10f, 0.0f }, + { GEN_MODLFOTOPITCH, 1, 2, -12000.0f, 12000.0f, 0.0f }, + { GEN_VIBLFOTOPITCH, 1, 2, -12000.0f, 12000.0f, 0.0f }, + { GEN_MODENVTOPITCH, 1, 2, -12000.0f, 12000.0f, 0.0f }, + { GEN_FILTERFC, 1, 2, 1500.0f, 13500.0f, 13500.0f }, + { GEN_FILTERQ, 1, 1, 0.0f, 960.0f, 0.0f }, + { GEN_MODLFOTOFILTERFC, 1, 2, -12000.0f, 12000.0f, 0.0f }, + { GEN_MODENVTOFILTERFC, 1, 2, -12000.0f, 12000.0f, 0.0f }, + { GEN_ENDADDRCOARSEOFS, 0, 1, -1e10f, 0.0f, 0.0f }, + { GEN_MODLFOTOVOL, 1, 1, -960.0f, 960.0f, 0.0f }, + { GEN_UNUSED1, 0, 0, 0.0f, 0.0f, 0.0f }, + { GEN_CHORUSSEND, 1, 1, 0.0f, 1000.0f, 0.0f }, + { GEN_REVERBSEND, 1, 1, 0.0f, 1000.0f, 0.0f }, + { GEN_PAN, 1, 1, -500.0f, 500.0f, 0.0f }, + { GEN_UNUSED2, 0, 0, 0.0f, 0.0f, 0.0f }, + { GEN_UNUSED3, 0, 0, 0.0f, 0.0f, 0.0f }, + { GEN_UNUSED4, 0, 0, 0.0f, 0.0f, 0.0f }, + { GEN_MODLFODELAY, 1, 2, -12000.0f, 5000.0f, -12000.0f }, + { GEN_MODLFOFREQ, 1, 4, -16000.0f, 4500.0f, 0.0f }, + { GEN_VIBLFODELAY, 1, 2, -12000.0f, 5000.0f, -12000.0f }, + { GEN_VIBLFOFREQ, 1, 4, -16000.0f, 4500.0f, 0.0f }, + { GEN_MODENVDELAY, 1, 2, -12000.0f, 5000.0f, -12000.0f }, + { GEN_MODENVATTACK, 1, 2, -12000.0f, 8000.0f, -12000.0f }, + { GEN_MODENVHOLD, 1, 2, -12000.0f, 5000.0f, -12000.0f }, + { GEN_MODENVDECAY, 1, 2, -12000.0f, 8000.0f, -12000.0f }, + { GEN_MODENVSUSTAIN, 0, 1, 0.0f, 1000.0f, 0.0f }, + { GEN_MODENVRELEASE, 1, 2, -12000.0f, 8000.0f, -12000.0f }, + { GEN_KEYTOMODENVHOLD, 0, 1, -1200.0f, 1200.0f, 0.0f }, + { GEN_KEYTOMODENVDECAY, 0, 1, -1200.0f, 1200.0f, 0.0f }, + { GEN_VOLENVDELAY, 1, 2, -12000.0f, 5000.0f, -12000.0f }, + { GEN_VOLENVATTACK, 1, 2, -12000.0f, 8000.0f, -12000.0f }, + { GEN_VOLENVHOLD, 1, 2, -12000.0f, 5000.0f, -12000.0f }, + { GEN_VOLENVDECAY, 1, 2, -12000.0f, 8000.0f, -12000.0f }, + { GEN_VOLENVSUSTAIN, 0, 1, 0.0f, 1440.0f, 0.0f }, + { GEN_VOLENVRELEASE, 1, 2, -12000.0f, 8000.0f, -12000.0f }, + { GEN_KEYTOVOLENVHOLD, 0, 1, -1200.0f, 1200.0f, 0.0f }, + { GEN_KEYTOVOLENVDECAY, 0, 1, -1200.0f, 1200.0f, 0.0f }, + { GEN_INSTRUMENT, 0, 0, 0.0f, 0.0f, 0.0f }, + { GEN_RESERVED1, 0, 0, 0.0f, 0.0f, 0.0f }, + { GEN_KEYRANGE, 0, 0, 0.0f, 127.0f, 0.0f }, + { GEN_VELRANGE, 0, 0, 0.0f, 127.0f, 0.0f }, + { GEN_STARTLOOPADDRCOARSEOFS, 0, 1, -1e10f, 1e10f, 0.0f }, + { GEN_KEYNUM, 1, 0, 0.0f, 127.0f, -1.0f }, + { GEN_VELOCITY, 1, 1, 0.0f, 127.0f, -1.0f }, + { GEN_ATTENUATION, 1, 1, 0.0f, 1440.0f, 0.0f }, + { GEN_RESERVED2, 0, 0, 0.0f, 0.0f, 0.0f }, + { GEN_ENDLOOPADDRCOARSEOFS, 0, 1, -1e10f, 1e10f, 0.0f }, + { GEN_COARSETUNE, 0, 1, -120.0f, 120.0f, 0.0f }, + { GEN_FINETUNE, 0, 1, -99.0f, 99.0f, 0.0f }, + { GEN_SAMPLEID, 0, 0, 0.0f, 0.0f, 0.0f }, + { GEN_SAMPLEMODE, 0, 0, 0.0f, 0.0f, 0.0f }, + { GEN_RESERVED3, 0, 0, 0.0f, 0.0f, 0.0f }, + { GEN_SCALETUNE, 0, 1, 0.0f, 1200.0f, 100.0f }, + { GEN_EXCLUSIVECLASS, 0, 0, 0.0f, 0.0f, 0.0f }, + { GEN_OVERRIDEROOTKEY, 1, 0, 0.0f, 127.0f, -1.0f }, + { GEN_PITCH, 1, 0, 0.0f, 127.0f, 0.0f } +}; + + +/** + * Set an array of generators to their default values. + * @param gen Array of generators (should be #GEN_LAST in size). + * @return Always returns 0 + */ +int +fluid_gen_set_default_values(fluid_gen_t* gen) +{ + int i; + + for (i = 0; i < GEN_LAST; i++) { + gen[i].flags = GEN_UNUSED; + gen[i].mod = 0.0; + gen[i].nrpn = 0.0; + gen[i].val = fluid_gen_info[i].def; + } + + return FLUID_OK; +} + + +/* fluid_gen_init + * + * Set an array of generators to their initial value + */ +int +fluid_gen_init(fluid_gen_t* gen, fluid_channel_t* channel) +{ + int i; + + fluid_gen_set_default_values(gen); + + for (i = 0; i < GEN_LAST; i++) { + gen[i].nrpn = fluid_channel_get_gen(channel, i); + + /* This is an extension to the SoundFont standard. More + * documentation is available at the fluid_synth_set_gen2() + * function. */ + if (fluid_channel_get_gen_abs(channel, i)) { + gen[i].flags = GEN_ABS_NRPN; + } + } + + return FLUID_OK; +} + +fluid_real_t fluid_gen_scale(int gen, float value) +{ + return (fluid_gen_info[gen].min + + value * (fluid_gen_info[gen].max - fluid_gen_info[gen].min)); +} + +fluid_real_t fluid_gen_scale_nrpn(int gen, int data) +{ + fluid_real_t value = (float) data - 8192.0f; + fluid_clip(value, -8192, 8192); + return value * (float) fluid_gen_info[gen].nrpn_scale; +} |