/* 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
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
 * 02111-1307, USA
 */

#include "gen.h"
#include "fluid.h"

namespace FluidS {

/* See SFSpec21 $8.1.3 */
GenInfo 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
 */
void fluid_gen_set_default_values(Generator* gen)
      {
      for (int 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;
            }
      }


/* fluid_gen_init
 *
 * Set an array of generators to their initial value
 */
void fluid_gen_init(Generator* gen, Channel* channel)
      {
      fluid_gen_set_default_values(gen);

      for (int i = 0; i < GEN_LAST; i++) {
            gen[i].nrpn = channel->getGen(i);

            /* This is an extension to the SoundFont standard. More
             * documentation is available at the fluid_synth_set_gen2()
             * function. */
            if (channel->getGenAbs(i))
                  gen[i].flags = GEN_ABS_NRPN;
            }
      }

float fluid_gen_scale(int gen, float value)
      {
      return (fluid_gen_info[gen].min
              + value * (fluid_gen_info[gen].max - fluid_gen_info[gen].min));
      }

float fluid_gen_scale_nrpn(int gen, int data)
      {
      float value = qBound(-8192.0, (float) data - 8192.0, 8192.0);
      return value * (float) fluid_gen_info[gen].nrpn_scale;
      }
}
