150 lines
7.2 KiB
C
150 lines
7.2 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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#include "fluid_gen.h"
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#include "fluid_chan.h"
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/* See SFSpec21 $8.1.3 */
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fluid_gen_info_t fluid_gen_info[] = {
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/* number/name init scale min max def */
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{ GEN_STARTADDROFS, 1, 1, 0.0f, 1e10f, 0.0f },
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{ GEN_ENDADDROFS, 1, 1, -1e10f, 0.0f, 0.0f },
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{ GEN_STARTLOOPADDROFS, 1, 1, -1e10f, 1e10f, 0.0f },
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{ GEN_ENDLOOPADDROFS, 1, 1, -1e10f, 1e10f, 0.0f },
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{ GEN_STARTADDRCOARSEOFS, 0, 1, 0.0f, 1e10f, 0.0f },
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{ GEN_MODLFOTOPITCH, 1, 2, -12000.0f, 12000.0f, 0.0f },
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{ GEN_VIBLFOTOPITCH, 1, 2, -12000.0f, 12000.0f, 0.0f },
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{ GEN_MODENVTOPITCH, 1, 2, -12000.0f, 12000.0f, 0.0f },
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{ GEN_FILTERFC, 1, 2, 1500.0f, 13500.0f, 13500.0f },
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{ GEN_FILTERQ, 1, 1, 0.0f, 960.0f, 0.0f },
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{ GEN_MODLFOTOFILTERFC, 1, 2, -12000.0f, 12000.0f, 0.0f },
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{ GEN_MODENVTOFILTERFC, 1, 2, -12000.0f, 12000.0f, 0.0f },
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{ GEN_ENDADDRCOARSEOFS, 0, 1, -1e10f, 0.0f, 0.0f },
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{ GEN_MODLFOTOVOL, 1, 1, -960.0f, 960.0f, 0.0f },
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{ GEN_UNUSED1, 0, 0, 0.0f, 0.0f, 0.0f },
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{ GEN_CHORUSSEND, 1, 1, 0.0f, 1000.0f, 0.0f },
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{ GEN_REVERBSEND, 1, 1, 0.0f, 1000.0f, 0.0f },
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{ GEN_PAN, 1, 1, -500.0f, 500.0f, 0.0f },
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{ GEN_UNUSED2, 0, 0, 0.0f, 0.0f, 0.0f },
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{ GEN_UNUSED3, 0, 0, 0.0f, 0.0f, 0.0f },
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{ GEN_UNUSED4, 0, 0, 0.0f, 0.0f, 0.0f },
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{ GEN_MODLFODELAY, 1, 2, -12000.0f, 5000.0f, -12000.0f },
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{ GEN_MODLFOFREQ, 1, 4, -16000.0f, 4500.0f, 0.0f },
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{ GEN_VIBLFODELAY, 1, 2, -12000.0f, 5000.0f, -12000.0f },
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{ GEN_VIBLFOFREQ, 1, 4, -16000.0f, 4500.0f, 0.0f },
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{ GEN_MODENVDELAY, 1, 2, -12000.0f, 5000.0f, -12000.0f },
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{ GEN_MODENVATTACK, 1, 2, -12000.0f, 8000.0f, -12000.0f },
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{ GEN_MODENVHOLD, 1, 2, -12000.0f, 5000.0f, -12000.0f },
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{ GEN_MODENVDECAY, 1, 2, -12000.0f, 8000.0f, -12000.0f },
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{ GEN_MODENVSUSTAIN, 0, 1, 0.0f, 1000.0f, 0.0f },
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{ GEN_MODENVRELEASE, 1, 2, -12000.0f, 8000.0f, -12000.0f },
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{ GEN_KEYTOMODENVHOLD, 0, 1, -1200.0f, 1200.0f, 0.0f },
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{ GEN_KEYTOMODENVDECAY, 0, 1, -1200.0f, 1200.0f, 0.0f },
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{ GEN_VOLENVDELAY, 1, 2, -12000.0f, 5000.0f, -12000.0f },
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{ GEN_VOLENVATTACK, 1, 2, -12000.0f, 8000.0f, -12000.0f },
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{ GEN_VOLENVHOLD, 1, 2, -12000.0f, 5000.0f, -12000.0f },
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{ GEN_VOLENVDECAY, 1, 2, -12000.0f, 8000.0f, -12000.0f },
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{ GEN_VOLENVSUSTAIN, 0, 1, 0.0f, 1440.0f, 0.0f },
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{ GEN_VOLENVRELEASE, 1, 2, -12000.0f, 8000.0f, -12000.0f },
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{ GEN_KEYTOVOLENVHOLD, 0, 1, -1200.0f, 1200.0f, 0.0f },
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{ GEN_KEYTOVOLENVDECAY, 0, 1, -1200.0f, 1200.0f, 0.0f },
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{ GEN_INSTRUMENT, 0, 0, 0.0f, 0.0f, 0.0f },
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{ GEN_RESERVED1, 0, 0, 0.0f, 0.0f, 0.0f },
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{ GEN_KEYRANGE, 0, 0, 0.0f, 127.0f, 0.0f },
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{ GEN_VELRANGE, 0, 0, 0.0f, 127.0f, 0.0f },
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{ GEN_STARTLOOPADDRCOARSEOFS, 0, 1, -1e10f, 1e10f, 0.0f },
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{ GEN_KEYNUM, 1, 0, 0.0f, 127.0f, -1.0f },
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{ GEN_VELOCITY, 1, 1, 0.0f, 127.0f, -1.0f },
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{ GEN_ATTENUATION, 1, 1, 0.0f, 1440.0f, 0.0f },
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{ GEN_RESERVED2, 0, 0, 0.0f, 0.0f, 0.0f },
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{ GEN_ENDLOOPADDRCOARSEOFS, 0, 1, -1e10f, 1e10f, 0.0f },
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{ GEN_COARSETUNE, 0, 1, -120.0f, 120.0f, 0.0f },
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{ GEN_FINETUNE, 0, 1, -99.0f, 99.0f, 0.0f },
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{ GEN_SAMPLEID, 0, 0, 0.0f, 0.0f, 0.0f },
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{ GEN_SAMPLEMODE, 0, 0, 0.0f, 0.0f, 0.0f },
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{ GEN_RESERVED3, 0, 0, 0.0f, 0.0f, 0.0f },
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{ GEN_SCALETUNE, 0, 1, 0.0f, 1200.0f, 100.0f },
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{ GEN_EXCLUSIVECLASS, 0, 0, 0.0f, 0.0f, 0.0f },
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{ GEN_OVERRIDEROOTKEY, 1, 0, 0.0f, 127.0f, -1.0f },
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{ GEN_PITCH, 1, 0, 0.0f, 127.0f, 0.0f }
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};
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/**
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* Set an array of generators to their default values.
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* @param gen Array of generators (should be #GEN_LAST in size).
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* @return Always returns 0
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*/
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int
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fluid_gen_set_default_values(fluid_gen_t* gen)
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{
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int i;
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for (i = 0; i < GEN_LAST; i++) {
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gen[i].flags = GEN_UNUSED;
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gen[i].mod = 0.0;
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gen[i].nrpn = 0.0;
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gen[i].val = fluid_gen_info[i].def;
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}
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return FLUID_OK;
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}
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/* fluid_gen_init
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*
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* Set an array of generators to their initial value
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*/
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int
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fluid_gen_init(fluid_gen_t* gen, fluid_channel_t* channel)
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{
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int i;
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fluid_gen_set_default_values(gen);
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for (i = 0; i < GEN_LAST; i++) {
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gen[i].nrpn = fluid_channel_get_gen(channel, i);
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/* This is an extension to the SoundFont standard. More
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* documentation is available at the fluid_synth_set_gen2()
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* function. */
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if (fluid_channel_get_gen_abs(channel, i)) {
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gen[i].flags = GEN_ABS_NRPN;
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}
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}
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return FLUID_OK;
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}
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fluid_real_t fluid_gen_scale(int gen, float value)
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{
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return (fluid_gen_info[gen].min
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+ value * (fluid_gen_info[gen].max - fluid_gen_info[gen].min));
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}
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fluid_real_t fluid_gen_scale_nrpn(int gen, int data)
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{
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fluid_real_t value = (float) data - 8192.0f;
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fluid_clip(value, -8192, 8192);
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return value * (float) fluid_gen_info[gen].nrpn_scale;
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}
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