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raze-gles/libraries/timidityplus/sndfont.cpp
Christoph Oelckers 9f9748ede6 - initial ZMusic hookup.
2019-11-10 23:58:51 +01:00

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/*
TiMidity++ -- MIDI to WAVE converter and player
Copyright (C) 1999-2005 Masanao Izumo <iz@onicos.co.jp>
Copyright (C) 1995 Tuukka Toivonen <tt@cgs.fi>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
This code from awesfx
Modified by Masanao Izumo <mo@goice.co.jp>
================================================================
parsesf.c
parse SoundFont layers and convert it to AWE driver patch
Copyright (C) 1996,1997 Takashi Iwai
================================================================
*/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <math.h>
#include "timidity.h"
#include "common.h"
#include "tables.h"
#include "instrum.h"
#include "playmidi.h"
#include "filter.h"
#include "freq.h"
#include "resample.h"
namespace TimidityPlus
{
#define SFMalloc(rec, count) new_segment(&(rec)->pool, count)
#define SFStrdup(rec, s) strdup_mblock(&(rec)->pool, s)
/*----------------------------------------------------------------
* compile flags
*----------------------------------------------------------------*/
/* return value */
#define AWE_RET_OK 0 /* successfully loaded */
#define AWE_RET_ERR 1 /* some fatal error occurs */
#define AWE_RET_SKIP 2 /* some fonts are skipped */
#define AWE_RET_NOMEM 3 /* out or memory; not all fonts loaded */
#define AWE_RET_NOT_FOUND 4 /* the file is not found */
/*----------------------------------------------------------------
* local parameters
*----------------------------------------------------------------*/
struct SFPatchRec
{
int preset, bank, keynote; /* -1 = matches all */
};
struct SampleList
{
Sample v;
SampleList *next;
int32_t start;
int32_t len;
int32_t cutoff_freq;
int16_t resonance;
int16_t root, tune;
char low, high; /* key note range */
int8_t reverb_send, chorus_send;
/* Depend on playback_rate */
int32_t vibrato_freq;
int32_t attack;
int32_t hold;
int32_t sustain;
int32_t decay;
int32_t release;
int32_t modattack;
int32_t modhold;
int32_t modsustain;
int32_t moddecay;
int32_t modrelease;
int bank, keynote; /* for drum instruments */
};
struct InstList {
SFPatchRec pat;
int pr_idx;
int samples;
int order;
SampleList *slist;
InstList *next;
};
struct SFExclude {
SFPatchRec pat;
SFExclude *next;
};
struct SFOrder {
SFPatchRec pat;
int order;
SFOrder *next;
};
#define INSTHASHSIZE 127
#define INSTHASH(bank, preset, keynote) \
((int)(((unsigned)bank ^ (unsigned)preset ^ (unsigned)keynote) % INSTHASHSIZE))
struct SFInsts {
timidity_file *tf;
char *fname;
int8_t def_order, def_cutoff_allowed, def_resonance_allowed;
uint16_t version, minorversion;
int32_t samplepos, samplesize;
InstList *instlist[INSTHASHSIZE];
char **inst_namebuf;
SFExclude *sfexclude;
SFOrder *sforder;
SFInsts *next;
double amptune;
MBlockList pool;
};
/*----------------------------------------------------------------*/
/* prototypes */
#define P_GLOBAL 1
#define P_LAYER 2
#define def_drum_inst 0
/*----------------------------------------------------------------*/
SFInsts *Instruments::find_soundfont(char *sf_file)
{
SFInsts *sf;
for(sf = sfrecs; sf != NULL; sf = sf->next)
if(sf->fname != NULL && strcmp(sf->fname, sf_file) == 0)
return sf;
return NULL;
}
SFInsts *Instruments::new_soundfont(char *sf_file)
{
SFInsts *sf, *prev;
for(sf = sfrecs, prev = NULL; sf != NULL; prev = sf, sf = sf->next)
{
if(sf->fname == NULL)
{
/* remove the record from the chain to reuse */
if (prev != NULL)
prev->next = sf->next;
else if (sfrecs == sf)
sfrecs = sf->next;
break;
}
}
if(sf == NULL)
sf = (SFInsts *)safe_malloc(sizeof(SFInsts));
memset(sf, 0, sizeof(SFInsts));
init_mblock(&sf->pool);
sf->fname = SFStrdup(sf, sf_file);
sf->def_order = DEFAULT_SOUNDFONT_ORDER;
sf->amptune = 1.0;
return sf;
}
void Instruments::add_soundfont(char *sf_file, int sf_order, int sf_cutoff, int sf_resonance, int amp)
{
SFInsts *sf;
if((sf = find_soundfont(sf_file)) == NULL)
{
sf = new_soundfont(sf_file);
sf->next = sfrecs;
sfrecs = sf;
}
if(sf_order >= 0)
sf->def_order = sf_order;
if(sf_cutoff >= 0)
sf->def_cutoff_allowed = sf_cutoff;
if(sf_resonance >= 0)
sf->def_resonance_allowed = sf_resonance;
if(amp >= 0)
sf->amptune = (double)amp * 0.01;
current_sfrec = sf;
}
void Instruments::remove_soundfont(char *sf_file)
{
SFInsts *sf;
if((sf = find_soundfont(sf_file)) != NULL)
end_soundfont(sf);
}
void Instruments::free_soundfonts()
{
SFInsts *sf, *next;
for (sf = sfrecs; sf != NULL; sf = next) {
if (sf->tf != nullptr) tf_close(sf->tf);
sf->tf = nullptr;
reuse_mblock(&sf->pool);
next = sf->next;
free(sf);
}
}
char *Instruments::soundfont_preset_name(int bank, int preset, int keynote,
char **sndfile)
{
SFInsts *rec;
if(sndfile != NULL)
*sndfile = NULL;
for(rec = sfrecs; rec != NULL; rec = rec->next)
if(rec->fname != NULL)
{
int addr;
InstList *ip;
addr = INSTHASH(bank, preset, keynote);
for(ip = rec->instlist[addr]; ip; ip = ip->next)
if(ip->pat.bank == bank && ip->pat.preset == preset &&
(keynote < 0 || keynote == ip->pat.keynote))
break;
if(ip != NULL)
{
if(sndfile != NULL)
*sndfile = rec->fname;
return rec->inst_namebuf[ip->pr_idx];
}
}
return NULL;
}
void Instruments::init_sf(SFInsts *rec)
{
SFInfo sfinfo;
int i;
if ((rec->tf = open_file(rec->fname, sfreader)) == NULL) {
printMessage(CMSG_ERROR, VERB_NORMAL,
"Can't open soundfont file %s", rec->fname);
end_soundfont(rec);
return;
}
if(load_soundfont(&sfinfo, rec->tf))
{
end_soundfont(rec);
return;
}
correct_samples(&sfinfo);
current_sfrec = rec;
for (i = 0; i < sfinfo.npresets; i++) {
int bank = sfinfo.preset[i].bank;
int preset = sfinfo.preset[i].preset;
if (bank == 128)
/* FIXME: why not allow exclusion of drumsets? */
alloc_instrument_bank(1, preset);
else {
if (is_excluded(rec, bank, preset, -1))
continue;
alloc_instrument_bank(0, bank);
}
load_font(&sfinfo, i);
}
/* copy header info */
rec->version = sfinfo.version;
rec->minorversion = sfinfo.minorversion;
rec->samplepos = sfinfo.samplepos;
rec->samplesize = sfinfo.samplesize;
rec->inst_namebuf =
(char **)SFMalloc(rec, sfinfo.npresets * sizeof(char *));
for(i = 0; i < sfinfo.npresets; i++)
rec->inst_namebuf[i] =
(char *)SFStrdup(rec, sfinfo.preset[i].hdr.name);
free_soundfont(&sfinfo);
if (opt_sf_close_each_file) {
tf_close(rec->tf);
rec->tf = NULL;
}
}
void Instruments::init_load_soundfont(void)
{
SFInsts *rec;
for(rec = sfrecs; rec != NULL; rec = rec->next)
if(rec->fname != NULL)
init_sf(rec);
}
void Instruments::end_soundfont(SFInsts *rec)
{
if (rec->tf) {
tf_close(rec->tf);
rec->tf = NULL;
}
rec->fname = NULL;
rec->inst_namebuf = NULL;
rec->sfexclude = NULL;
rec->sforder = NULL;
reuse_mblock(&rec->pool);
}
Instrument *Instruments::extract_soundfont(char *sf_file, int bank, int preset,int keynote)
{
SFInsts *sf;
if((sf = find_soundfont(sf_file)) != NULL)
return try_load_soundfont(sf, -1, bank, preset, keynote);
sf = new_soundfont(sf_file);
sf->next = sfrecs;
sf->def_order = 2;
sfrecs = sf;
init_sf(sf);
return try_load_soundfont(sf, -1, bank, preset, keynote);
}
/*----------------------------------------------------------------
* get converted instrument info and load the wave data from file
*----------------------------------------------------------------*/
Instrument *Instruments::try_load_soundfont(SFInsts *rec, int order, int bank,int preset, int keynote)
{
InstList *ip;
Instrument *inst = NULL;
int addr;
if (rec->tf == NULL) {
if (rec->fname == NULL)
return NULL;
if ((rec->tf = open_file(rec->fname, sfreader)) == NULL)
{
printMessage(CMSG_ERROR, VERB_NORMAL,
"Can't open soundfont file %s", rec->fname);
end_soundfont(rec);
return NULL;
}
}
addr = INSTHASH(bank, preset, keynote);
for (ip = rec->instlist[addr]; ip; ip = ip->next) {
if (ip->pat.bank == bank && ip->pat.preset == preset &&
(keynote < 0 || ip->pat.keynote == keynote) &&
(order < 0 || ip->order == order))
break;
}
if (ip && ip->samples)
inst = load_from_file(rec, ip);
if (opt_sf_close_each_file) {
tf_close(rec->tf);
rec->tf = NULL;
}
return inst;
}
Instrument *Instruments::load_soundfont_inst(int order, int bank, int preset, int keynote)
{
SFInsts *rec;
Instrument *ip;
/*
* Search through all ordered soundfonts
*/
int o = order;
for(rec = sfrecs; rec != NULL; rec = rec->next)
{
if(rec->fname != NULL)
{
ip = try_load_soundfont(rec, o, bank, preset, keynote);
if(ip != NULL)
return ip;
if (o > 0) o++;
}
}
return NULL;
}
/*----------------------------------------------------------------*/
#define TO_MHZ(abscents) (int32_t)(8176.0 * pow(2.0,(double)(abscents)/1200.0))
#define TO_VOLUME(level) (uint8_t)(255.0 - (level) * (255.0/1000.0))
double Instruments::calc_volume(LayerTable *tbl)
{
int v;
if(!tbl->set[SF_initAtten] || (int)tbl->val[SF_initAtten] == 0)
return (double)1.0;
v = (int)tbl->val[SF_initAtten];
if(v < 0) {v = 0;}
else if(v > 960) {v = 960;}
return cb_to_amp_table[v];
}
/* convert from 16bit value to fractional offset (15.15) */
int32_t Instruments::to_offset(int32_t offset)
{
return offset << 14;
}
#define SF_ENVRATE_MAX (0x3FFFFFFFL)
#define SF_ENVRATE_MIN (1L)
/* calculate ramp rate in fractional unit;
* diff = 16bit, time = msec
*/
int32_t Instruments::calc_rate(int32_t diff, double msec)
{
double rate;
if(msec == 0) {return (int32_t)SF_ENVRATE_MAX + 1;}
if(diff <= 0) {diff = 1;}
diff <<= 14;
rate = ((double)diff / playback_rate) * control_ratio * 1000.0 / msec;
if(fast_decay) {rate *= 2;}
if(rate > SF_ENVRATE_MAX) {rate = SF_ENVRATE_MAX;}
else if(rate < SF_ENVRATE_MIN) {rate = SF_ENVRATE_MIN;}
return (int32_t)rate;
}
/* calculate ramp rate in fractional unit;
* diff = 16bit, timecent
*/
int32_t Instruments::to_rate(int32_t diff, int timecent)
{
double rate;
if(timecent == -12000) /* instantaneous attack */
{return (int32_t)SF_ENVRATE_MAX + 1;}
if(diff <= 0) {diff = 1;}
diff <<= 14;
rate = (double)diff * control_ratio / playback_rate / pow(2.0, (double)timecent / 1200.0);
if(fast_decay) {rate *= 2;}
if(rate > SF_ENVRATE_MAX) {rate = SF_ENVRATE_MAX;}
else if(rate < SF_ENVRATE_MIN) {rate = SF_ENVRATE_MIN;}
return (int32_t)rate;
}
/*
* convert timecents to sec
*/
double Instruments::to_msec(int timecent)
{
return timecent == -12000 ? 0 : 1000.0 * pow(2.0, (double)timecent / 1200.0);
}
/*
* Sustain level
* sf: centibels
* parm: 0x7f - sustain_level(dB) * 0.75
*/
int32_t Instruments::calc_sustain(int sust_cB)
{
if(sust_cB <= 0) {return 65533;}
else if(sust_cB >= 1000) {return 0;}
else {return (1000 - sust_cB) * 65533 / 1000;}
}
Instrument *Instruments::load_from_file(SFInsts *rec, InstList *ip)
{
SampleList *sp;
Instrument *inst;
int i;
int32_t len;
inst = (Instrument *)safe_malloc(sizeof(Instrument));
inst->instname = rec->inst_namebuf[ip->pr_idx];
inst->type = INST_SF2;
inst->samples = ip->samples;
inst->sample = (Sample *)safe_malloc(sizeof(Sample) * ip->samples);
memset(inst->sample, 0, sizeof(Sample) * ip->samples);
for (i = 0, sp = ip->slist; i < ip->samples && sp; i++, sp = sp->next) {
Sample *sample = inst->sample + i;
int32_t j;
#ifdef _BIG_ENDIAN_
int32_t k;
int16_t *tmp, s;
#endif
memcpy(sample, &sp->v, sizeof(Sample));
sample->data = NULL;
sample->data_alloced = 0;
if(i > 0 && (!sample->note_to_use ||
(sample->modes & MODES_LOOPING)))
{
SampleList *sps;
Sample *found, *s;
found = NULL;
for(j = 0, sps = ip->slist, s = inst->sample; j < i && sps;
j++, sps = sps->next, s++)
{
if(s->data == NULL)
break;
if(sp->start == sps->start)
{
if(antialiasing_allowed)
{
if(sample->data_length != s->data_length ||
sample->sample_rate != s->sample_rate)
continue;
}
if(s->note_to_use && !(s->modes & MODES_LOOPING))
continue;
found = s;
break;
}
}
if(found)
{
sample->data = found->data;
sample->data_alloced = 0;
continue;
}
}
sample->data = (sample_t *)safe_large_malloc(sp->len + 2 * 3);
sample->data_alloced = 1;
tf_seek(rec->tf, sp->start, SEEK_SET);
tf_read(sample->data, sp->len, 1, rec->tf);
#ifdef _BIG_ENDIAN_
tmp = (int16_t*)sample->data;
k = sp->len / 2;
for (j = 0; j < k; j++) {
s = LE_SHORT(*tmp);
*tmp++ = s;
}
#endif
/* set a small blank loop at the tail for avoiding abnormal loop. */
len = sp->len / 2;
sample->data[len] = sample->data[len + 1] = sample->data[len + 2] = 0;
if (antialiasing_allowed)
antialiasing((int16_t *)sample->data,
sample->data_length >> FRACTION_BITS,
sample->sample_rate,
playback_rate);
/* resample it if possible */
if (sample->note_to_use && !(sample->modes & MODES_LOOPING))
pre_resample(sample);
/* do pitch detection on drums if surround chorus is used */
if (ip->pat.bank == 128 && timidity_surround_chorus)
{
Freq freq;
sample->chord = -1;
sample->root_freq_detected =
freq.freq_fourier(sample, &(sample->chord));
sample->transpose_detected =
assign_pitch_to_freq(sample->root_freq_detected) -
assign_pitch_to_freq(sample->root_freq / 1024.0);
}
}
return inst;
}
/*----------------------------------------------------------------
* excluded samples
*----------------------------------------------------------------*/
int Instruments::exclude_soundfont(int bank, int preset, int keynote)
{
SFExclude *exc;
if(current_sfrec == NULL)
return 1;
exc = (SFExclude*)SFMalloc(current_sfrec , sizeof(SFExclude));
exc->pat.bank = bank;
exc->pat.preset = preset;
exc->pat.keynote = keynote;
exc->next = current_sfrec->sfexclude;
current_sfrec->sfexclude = exc;
return 0;
}
/* check the instrument is specified to be excluded */
int Instruments::is_excluded(SFInsts *rec, int bank, int preset, int keynote)
{
SFExclude *p;
for (p = rec->sfexclude; p; p = p->next) {
if (p->pat.bank == bank &&
(p->pat.preset < 0 || p->pat.preset == preset) &&
(p->pat.keynote < 0 || p->pat.keynote == keynote))
return 1;
}
return 0;
}
/*----------------------------------------------------------------
* ordered samples
*----------------------------------------------------------------*/
int Instruments::order_soundfont(int bank, int preset, int keynote, int order)
{
SFOrder *p;
if(current_sfrec == NULL)
return 1;
p = (SFOrder*)SFMalloc(current_sfrec, sizeof(SFOrder));
p->pat.bank = bank;
p->pat.preset = preset;
p->pat.keynote = keynote;
p->order = order;
p->next = current_sfrec->sforder;
current_sfrec->sforder = p;
return 0;
}
/* check the instrument is specified to be ordered */
int Instruments::is_ordered(SFInsts *rec, int bank, int preset, int keynote)
{
SFOrder *p;
for (p = rec->sforder; p; p = p->next) {
if (p->pat.bank == bank &&
(p->pat.preset < 0 || p->pat.preset == preset) &&
(p->pat.keynote < 0 || p->pat.keynote == keynote))
return p->order;
}
return -1;
}
/*----------------------------------------------------------------*/
int Instruments::load_font(SFInfo *sf, int pridx)
{
SFPresetHdr *preset = &sf->preset[pridx];
int rc, j, nlayers;
SFGenLayer *layp, *globalp;
/* if layer is empty, skip it */
if ((nlayers = preset->hdr.nlayers) <= 0 ||
(layp = preset->hdr.layer) == NULL)
return AWE_RET_SKIP;
/* check global layer */
globalp = NULL;
if (is_global(layp)) {
globalp = layp;
layp++;
nlayers--;
}
/* parse for each preset layer */
for (j = 0; j < nlayers; j++, layp++) {
LayerTable tbl;
/* set up table */
clear_table(&tbl);
if (globalp)
set_to_table(sf, &tbl, globalp, P_GLOBAL);
set_to_table(sf, &tbl, layp, P_LAYER);
/* parse the instrument */
rc = parse_layer(sf, pridx, &tbl, 0);
if(rc == AWE_RET_ERR || rc == AWE_RET_NOMEM)
return rc;
}
return AWE_RET_OK;
}
/*----------------------------------------------------------------*/
/* parse a preset layer and convert it to the patch structure */
int Instruments::parse_layer(SFInfo *sf, int pridx, LayerTable *tbl, int level)
{
SFInstHdr *inst;
int rc, i, nlayers;
SFGenLayer *lay, *globalp;
if (level >= 2) {
fprintf(stderr, "parse_layer: too deep instrument level\n");
return AWE_RET_ERR;
}
/* instrument must be defined */
if (!tbl->set[SF_instrument])
return AWE_RET_SKIP;
inst = &sf->inst[tbl->val[SF_instrument]];
/* if layer is empty, skip it */
if ((nlayers = inst->hdr.nlayers) <= 0 ||
(lay = inst->hdr.layer) == NULL)
return AWE_RET_SKIP;
reset_last_sample_info();
/* check global layer */
globalp = NULL;
if (is_global(lay)) {
globalp = lay;
lay++;
nlayers--;
}
/* parse for each layer */
for (i = 0; i < nlayers; i++, lay++) {
LayerTable ctbl;
clear_table(&ctbl);
if (globalp)
set_to_table(sf, &ctbl, globalp, P_GLOBAL);
set_to_table(sf, &ctbl, lay, P_LAYER);
if (!ctbl.set[SF_sampleId]) {
/* recursive loading */
merge_table(sf, &ctbl, tbl);
if (! sanity_range(&ctbl))
continue;
rc = parse_layer(sf, pridx, &ctbl, level+1);
if (rc != AWE_RET_OK && rc != AWE_RET_SKIP)
return rc;
reset_last_sample_info();
} else {
init_and_merge_table(sf, &ctbl, tbl);
if (! sanity_range(&ctbl))
continue;
/* load the info data */
if ((rc = make_patch(sf, pridx, &ctbl)) == AWE_RET_ERR)
return rc;
}
}
return AWE_RET_OK;
}
int Instruments::is_global(SFGenLayer *layer)
{
int i;
for (i = 0; i < layer->nlists; i++) {
if (layer->list[i].oper == SF_instrument ||
layer->list[i].oper == SF_sampleId)
return 0;
}
return 1;
}
/*----------------------------------------------------------------
* layer table handlers
*----------------------------------------------------------------*/
/* initialize layer table */
void Instruments::clear_table(LayerTable *tbl)
{
memset(tbl->val, 0, sizeof(tbl->val));
memset(tbl->set, 0, sizeof(tbl->set));
}
/* set items in a layer to the table */
void Instruments::set_to_table(SFInfo *sf, LayerTable *tbl, SFGenLayer *lay, int level)
{
int i;
for (i = 0; i < lay->nlists; i++) {
SFGenRec *gen = &lay->list[i];
/* copy the value regardless of its copy policy */
tbl->val[gen->oper] = gen->amount;
tbl->set[gen->oper] = level;
}
}
/* add an item to the table */
void Instruments::add_item_to_table(LayerTable *tbl, int oper, int amount, int level)
{
LayerItem *item = &layer_items[oper];
int o_lo, o_hi, lo, hi;
switch (item->copy) {
case L_INHRT:
tbl->val[oper] += amount;
break;
case L_OVWRT:
tbl->val[oper] = amount;
break;
case L_PRSET:
case L_INSTR:
/* do not overwrite */
if (!tbl->set[oper])
tbl->val[oper] = amount;
break;
case L_RANGE:
if (!tbl->set[oper]) {
tbl->val[oper] = amount;
} else {
o_lo = LOWNUM(tbl->val[oper]);
o_hi = HIGHNUM(tbl->val[oper]);
lo = LOWNUM(amount);
hi = HIGHNUM(amount);
if (lo < o_lo) lo = o_lo;
if (hi > o_hi) hi = o_hi;
tbl->val[oper] = RANGE(lo, hi);
}
break;
}
}
/* merge two tables */
void Instruments::merge_table(SFInfo *sf, LayerTable *dst, LayerTable *src)
{
int i;
for (i = 0; i < SF_EOF; i++) {
if (src->set[i]) {
if (sf->version == 1) {
if (!dst->set[i] ||
i == SF_keyRange || i == SF_velRange)
/* just copy it */
dst->val[i] = src->val[i];
}
else
add_item_to_table(dst, i, src->val[i], P_GLOBAL);
dst->set[i] = P_GLOBAL;
}
}
}
/* merge and set default values */
void Instruments::init_and_merge_table(SFInfo *sf, LayerTable *dst, LayerTable *src)
{
int i;
/* default value is not zero */
if (sf->version == 1) {
layer_items[SF_sustainEnv1].defv = 1000;
layer_items[SF_sustainEnv2].defv = 1000;
layer_items[SF_freqLfo1].defv = -725;
layer_items[SF_freqLfo2].defv = -15600;
} else {
layer_items[SF_sustainEnv1].defv = 0;
layer_items[SF_sustainEnv2].defv = 0;
layer_items[SF_freqLfo1].defv = 0;
layer_items[SF_freqLfo2].defv = 0;
}
/* set default */
for (i = 0; i < SF_EOF; i++) {
if (!dst->set[i])
dst->val[i] = layer_items[i].defv;
}
merge_table(sf, dst, src);
/* convert from SBK to SF2 */
if (sf->version == 1) {
for (i = 0; i < SF_EOF; i++) {
if (dst->set[i])
dst->val[i] = sbk_to_sf2(i, dst->val[i], layer_items);
}
}
}
/*----------------------------------------------------------------
* check key and velocity range
*----------------------------------------------------------------*/
int Instruments::sanity_range(LayerTable *tbl)
{
int lo, hi;
lo = LOWNUM(tbl->val[SF_keyRange]);
hi = HIGHNUM(tbl->val[SF_keyRange]);
if (lo < 0 || lo > 127 || hi < 0 || hi > 127 || hi < lo)
return 0;
lo = LOWNUM(tbl->val[SF_velRange]);
hi = HIGHNUM(tbl->val[SF_velRange]);
if (lo < 0 || lo > 127 || hi < 0 || hi > 127 || hi < lo)
return 0;
return 1;
}
/*----------------------------------------------------------------
* create patch record from the stored data table
*----------------------------------------------------------------*/
int Instruments::make_patch(SFInfo *sf, int pridx, LayerTable *tbl)
{
int bank, preset, keynote;
int keynote_from, keynote_to, done;
int addr, order;
InstList *ip;
SFSampleInfo *sample;
SampleList *sp;
sample = &sf->sample[tbl->val[SF_sampleId]];
if(sample->sampletype & SF_SAMPLETYPE_ROM) /* is ROM sample? */
{
printMessage(CMSG_INFO, VERB_DEBUG, "preset %d is ROM sample: 0x%x",
pridx, sample->sampletype);
return AWE_RET_SKIP;
}
bank = sf->preset[pridx].bank;
preset = sf->preset[pridx].preset;
if(bank == 128){
keynote_from = LOWNUM(tbl->val[SF_keyRange]);
keynote_to = HIGHNUM(tbl->val[SF_keyRange]);
} else
keynote_from = keynote_to = -1;
done = 0;
for(keynote=keynote_from;keynote<=keynote_to;keynote++){
if(is_excluded(current_sfrec, bank, preset, keynote))
{
continue;
} else
done++;
order = is_ordered(current_sfrec, bank, preset, keynote);
if(order < 0)
order = current_sfrec->def_order;
addr = INSTHASH(bank, preset, keynote);
for(ip = current_sfrec->instlist[addr]; ip; ip = ip->next)
{
if(ip->pat.bank == bank && ip->pat.preset == preset &&
(keynote < 0 || keynote == ip->pat.keynote))
break;
}
if(ip == NULL)
{
ip = (InstList*)SFMalloc(current_sfrec, sizeof(InstList));
memset(ip, 0, sizeof(InstList));
ip->pr_idx = pridx;
ip->pat.bank = bank;
ip->pat.preset = preset;
ip->pat.keynote = keynote;
ip->order = order;
ip->samples = 0;
ip->slist = NULL;
ip->next = current_sfrec->instlist[addr];
current_sfrec->instlist[addr] = ip;
}
/* new sample */
sp = (SampleList *)SFMalloc(current_sfrec, sizeof(SampleList));
memset(sp, 0, sizeof(SampleList));
sp->bank = bank;
sp->keynote = keynote;
if(tbl->set[SF_keynum]) {
sp->v.note_to_use = (int)tbl->val[SF_keynum];
} else if(bank == 128) {
sp->v.note_to_use = keynote;
}
make_info(sf, sp, tbl);
/* add a sample */
if(ip->slist == NULL)
ip->slist = sp;
else
{
SampleList *cur, *prev;
int32_t start;
/* Insert sample */
start = sp->start;
cur = ip->slist;
prev = NULL;
while(cur && cur->start <= start)
{
prev = cur;
cur = cur->next;
}
if(prev == NULL)
{
sp->next = ip->slist;
ip->slist = sp;
}
else
{
prev->next = sp;
sp->next = cur;
}
}
ip->samples++;
} /* for(;;) */
if(done==0)
return AWE_RET_SKIP;
else
return AWE_RET_OK;
}
/*----------------------------------------------------------------
*
* Modified for TiMidity
*/
/* conver to Sample parameter */
void Instruments::make_info(SFInfo *sf, SampleList *vp, LayerTable *tbl)
{
set_sample_info(sf, vp, tbl);
set_init_info(sf, vp, tbl);
set_rootkey(sf, vp, tbl);
set_rootfreq(vp);
/* tremolo & vibrato */
convert_tremolo(vp, tbl);
convert_vibrato(vp, tbl);
}
void Instruments::set_envelope_parameters(SampleList *vp)
{
/* convert envelope parameters */
vp->v.envelope_offset[0] = to_offset(65535);
vp->v.envelope_rate[0] = vp->attack;
vp->v.envelope_offset[1] = to_offset(65534);
vp->v.envelope_rate[1] = vp->hold;
vp->v.envelope_offset[2] = to_offset(vp->sustain);
vp->v.envelope_rate[2] = vp->decay;
vp->v.envelope_offset[3] = 0;
vp->v.envelope_rate[3] = vp->release;
vp->v.envelope_offset[4] = 0;
vp->v.envelope_rate[4] = vp->release;
vp->v.envelope_offset[5] = 0;
vp->v.envelope_rate[5] = vp->release;
/* convert modulation envelope parameters */
vp->v.modenv_offset[0] = to_offset(65535);
vp->v.modenv_rate[0] = vp->modattack;
vp->v.modenv_offset[1] = to_offset(65534);
vp->v.modenv_rate[1] = vp->modhold;
vp->v.modenv_offset[2] = to_offset(vp->modsustain);
vp->v.modenv_rate[2] = vp->moddecay;
vp->v.modenv_offset[3] = 0;
vp->v.modenv_rate[3] = vp->modrelease;
vp->v.modenv_offset[4] = 0;
vp->v.modenv_rate[4] = vp->modrelease;
vp->v.modenv_offset[5] = 0;
vp->v.modenv_rate[5] = vp->modrelease;
}
/* set sample address */
void Instruments::set_sample_info(SFInfo *sf, SampleList *vp, LayerTable *tbl)
{
SFSampleInfo *sp = &sf->sample[tbl->val[SF_sampleId]];
/* set sample position */
vp->start = (tbl->val[SF_startAddrsHi] << 15)
+ tbl->val[SF_startAddrs]
+ sp->startsample;
vp->len = (tbl->val[SF_endAddrsHi] << 15)
+ tbl->val[SF_endAddrs]
+ sp->endsample - vp->start;
vp->start = abs(vp->start);
vp->len = abs(vp->len);
/* set loop position */
vp->v.loop_start = (tbl->val[SF_startloopAddrsHi] << 15)
+ tbl->val[SF_startloopAddrs]
+ sp->startloop - vp->start;
vp->v.loop_end = (tbl->val[SF_endloopAddrsHi] << 15)
+ tbl->val[SF_endloopAddrs]
+ sp->endloop - vp->start;
/* set data length */
vp->v.data_length = vp->len + 1;
/* fix loop position */
if (vp->v.loop_end > (splen_t)vp->len + 1)
vp->v.loop_end = vp->len + 1;
if (vp->v.loop_start > (splen_t)vp->len)
vp->v.loop_start = vp->len;
if (vp->v.loop_start >= vp->v.loop_end)
{
vp->v.loop_start = vp->len;
vp->v.loop_end = vp->len + 1;
}
/* Sample rate */
if(sp->samplerate > 50000) {sp->samplerate = 50000;}
else if(sp->samplerate < 400) {sp->samplerate = 400;}
vp->v.sample_rate = sp->samplerate;
/* sample mode */
vp->v.modes = MODES_16BIT;
/* volume envelope & total volume */
vp->v.volume = calc_volume(tbl) * current_sfrec->amptune;
convert_volume_envelope(vp, tbl);
set_envelope_parameters(vp);
if(tbl->val[SF_sampleFlags] == 1 || tbl->val[SF_sampleFlags] == 3)
{
/* looping */
vp->v.modes |= MODES_LOOPING | MODES_SUSTAIN;
if(tbl->val[SF_sampleFlags] == 3)
vp->v.data_length = vp->v.loop_end; /* strip the tail */
}
else
{
/* set a small blank loop at the tail for avoiding abnormal loop. */
vp->v.loop_start = vp->len;
vp->v.loop_end = vp->len + 1;
}
/* convert to fractional samples */
vp->v.data_length <<= FRACTION_BITS;
vp->v.loop_start <<= FRACTION_BITS;
vp->v.loop_end <<= FRACTION_BITS;
/* point to the file position */
vp->start = vp->start * 2 + sf->samplepos;
vp->len *= 2;
vp->v.vel_to_fc = -2400; /* SF2 default value */
vp->v.key_to_fc = vp->v.vel_to_resonance = 0;
vp->v.envelope_velf_bpo = vp->v.modenv_velf_bpo =
vp->v.vel_to_fc_threshold = 64;
vp->v.key_to_fc_bpo = 60;
memset(vp->v.envelope_velf, 0, sizeof(vp->v.envelope_velf));
memset(vp->v.modenv_velf, 0, sizeof(vp->v.modenv_velf));
vp->v.inst_type = INST_SF2;
}
/*----------------------------------------------------------------*/
/* set global information */
void Instruments::set_init_info(SFInfo *sf, SampleList *vp, LayerTable *tbl)
{
int val;
SFSampleInfo *sample;
sample = &sf->sample[tbl->val[SF_sampleId]];
/* key range */
if(tbl->set[SF_keyRange])
{
vp->low = LOWNUM(tbl->val[SF_keyRange]);
vp->high = HIGHNUM(tbl->val[SF_keyRange]);
}
else
{
vp->low = 0;
vp->high = 127;
}
vp->v.low_freq = freq_table[(int)vp->low];
vp->v.high_freq = freq_table[(int)vp->high];
/* velocity range */
if(tbl->set[SF_velRange]) {
vp->v.low_vel = LOWNUM(tbl->val[SF_velRange]);
vp->v.high_vel = HIGHNUM(tbl->val[SF_velRange]);
} else {
vp->v.low_vel = 0;
vp->v.high_vel = 127;
}
/* fixed key & velocity */
if(tbl->set[SF_keynum])
vp->v.note_to_use = (int)tbl->val[SF_keynum];
if(tbl->set[SF_velocity] && (int)tbl->val[SF_velocity] != 0) {
printMessage(CMSG_INFO,VERB_DEBUG,"error: fixed-velocity is not supported.");
}
vp->v.sample_type = sample->sampletype;
vp->v.sf_sample_index = tbl->val[SF_sampleId];
vp->v.sf_sample_link = sample->samplelink;
/* Some sf2 files don't contain valid sample links, so see if the
previous sample was a matching Left / Right sample with the
link missing and add it */
switch (sample->sampletype) {
case SF_SAMPLETYPE_LEFT:
if (vp->v.sf_sample_link == 0 &&
last_sample_type == SF_SAMPLETYPE_RIGHT &&
last_sample_instrument == tbl->val[SF_instrument] &&
last_sample_keyrange == tbl->val[SF_keyRange]) {
/* The previous sample was a matching right sample
set the link */
vp->v.sf_sample_link = last_sample_list->v.sf_sample_index;
}
break;
case SF_SAMPLETYPE_RIGHT:
if (last_sample_list &&
last_sample_list->v.sf_sample_link == 0 &&
last_sample_type == SF_SAMPLETYPE_LEFT &&
last_sample_instrument == tbl->val[SF_instrument] &&
last_sample_keyrange == tbl->val[SF_keyRange]) {
/* The previous sample was a matching left sample
set the link on the previous sample*/
last_sample_list->v.sf_sample_link = tbl->val[SF_sampleId];
}
break;
}
/* Remember this sample in case the next one is a match */
last_sample_type = sample->sampletype;;
last_sample_instrument = tbl->val[SF_instrument];
last_sample_keyrange = tbl->val[SF_keyRange];
last_sample_list = vp;
/* panning position: 0 to 127 */
val = (int)tbl->val[SF_panEffectsSend];
if(sample->sampletype == SF_SAMPLETYPE_MONO || val != 0) { /* monoSample = 1 */
if(val < -500)
vp->v.panning = 0;
else if(val > 500)
vp->v.panning = 127;
else
vp->v.panning = (int8_t)((val + 500) * 127 / 1000);
} else if(sample->sampletype == SF_SAMPLETYPE_RIGHT) { /* rightSample = 2 */
vp->v.panning = 127;
} else if(sample->sampletype == SF_SAMPLETYPE_LEFT) { /* leftSample = 4 */
vp->v.panning = 0;
} else if(sample->sampletype == SF_SAMPLETYPE_LINKED) { /* linkedSample = 8 */
printMessage(CMSG_ERROR,VERB_NOISY,"error: linkedSample is not supported.");
}
memset(vp->v.envelope_keyf, 0, sizeof(vp->v.envelope_keyf));
memset(vp->v.modenv_keyf, 0, sizeof(vp->v.modenv_keyf));
if(tbl->set[SF_autoHoldEnv2]) {
vp->v.envelope_keyf[1] = (int16_t)tbl->val[SF_autoHoldEnv2];
}
if(tbl->set[SF_autoDecayEnv2]) {
vp->v.envelope_keyf[2] = (int16_t)tbl->val[SF_autoDecayEnv2];
}
if(tbl->set[SF_autoHoldEnv1]) {
vp->v.modenv_keyf[1] = (int16_t)tbl->val[SF_autoHoldEnv1];
}
if(tbl->set[SF_autoDecayEnv1]) {
vp->v.modenv_keyf[2] = (int16_t)tbl->val[SF_autoDecayEnv1];
}
current_sfrec->def_cutoff_allowed = 1;
current_sfrec->def_resonance_allowed = 1;
/* initial cutoff & resonance */
vp->cutoff_freq = 0;
if((int)tbl->val[SF_initialFilterFc] < 0)
tbl->set[SF_initialFilterFc] = tbl->val[SF_initialFilterFc] = 0;
if(current_sfrec->def_cutoff_allowed && tbl->set[SF_initialFilterFc]
&& (int)tbl->val[SF_initialFilterFc] >= 1500 && (int)tbl->val[SF_initialFilterFc] <= 13500)
{
val = (int)tbl->val[SF_initialFilterFc];
val = abscent_to_Hz(val);
if(!timidity_modulation_envelope) {
if(tbl->set[SF_env1ToFilterFc] && (int)tbl->val[SF_env1ToFilterFc] > 0)
{
val = int( val * pow(2.0,(double)tbl->val[SF_env1ToFilterFc] / 1200.0f));
if(val > 20000) {val = 20000;}
}
}
vp->cutoff_freq = val;
}
vp->v.cutoff_freq = vp->cutoff_freq;
vp->resonance = 0;
if(current_sfrec->def_resonance_allowed && tbl->set[SF_initialFilterQ])
{
val = (int)tbl->val[SF_initialFilterQ];
vp->resonance = val;
}
vp->v.resonance = vp->resonance;
}
void Instruments::reset_last_sample_info(void)
{
last_sample_list = NULL;
last_sample_type = 0;
/* Set last instrument and keyrange to a value which cannot be represented
by LayerTable.val (which is a short) */
last_sample_instrument = 0x80000000;
last_sample_keyrange = 0x80000000;
}
int Instruments::abscent_to_Hz(int abscents)
{
return (int)(8.176 * pow(2.0, (double)abscents / 1200.0));
}
/*----------------------------------------------------------------*/
#define SF_MODENV_CENT_MAX 1200 /* Live! allows only +-1200cents. */
/* calculate root key & fine tune */
void Instruments::set_rootkey(SFInfo *sf, SampleList *vp, LayerTable *tbl)
{
SFSampleInfo *sp = &sf->sample[tbl->val[SF_sampleId]];
int temp;
/* scale factor */
vp->v.scale_factor = 1024 * (double) tbl->val[SF_scaleTuning] / 100 + 0.5;
/* set initial root key & fine tune */
if (sf->version == 1 && tbl->set[SF_samplePitch]) {
/* set from sample pitch */
vp->root = tbl->val[SF_samplePitch] / 100;
vp->tune = -tbl->val[SF_samplePitch] % 100;
if (vp->tune <= -50)
vp->root++, vp->tune += 100;
} else {
/* from sample info */
vp->root = sp->originalPitch;
vp->tune = (int8_t) sp->pitchCorrection;
}
/* orverride root key */
if (tbl->set[SF_rootKey])
vp->root = tbl->val[SF_rootKey];
else if (vp->bank == 128 && vp->v.scale_factor != 0)
vp->tune += int16_t((vp->keynote - sp->originalPitch) * 100 * (double) vp->v.scale_factor / 1024);
vp->tune += tbl->val[SF_coarseTune] * 100 + tbl->val[SF_fineTune];
/* correct too high pitch */
if (vp->root >= vp->high + 60)
vp->root -= 60;
vp->v.tremolo_to_pitch =
(tbl->set[SF_lfo1ToPitch]) ? tbl->val[SF_lfo1ToPitch] : 0;
vp->v.tremolo_to_fc =
(tbl->set[SF_lfo1ToFilterFc]) ? tbl->val[SF_lfo1ToFilterFc] : 0;
vp->v.modenv_to_pitch =
(tbl->set[SF_env1ToPitch]) ? tbl->val[SF_env1ToPitch] : 0;
/* correct tune with the sustain level of modulation envelope */
temp = vp->v.modenv_to_pitch
* (double) (1000 - tbl->val[SF_sustainEnv1]) / 1000 + 0.5;
vp->tune += temp, vp->v.modenv_to_pitch -= temp;
vp->v.modenv_to_fc =
(tbl->set[SF_env1ToFilterFc]) ? tbl->val[SF_env1ToFilterFc] : 0;
}
void Instruments::set_rootfreq(SampleList *vp)
{
int root = vp->root;
int tune = 0.5 - 256 * (double) vp->tune / 100;
/* 0 <= tune < 255 */
while (tune < 0)
root--, tune += 256;
while (tune > 255)
root++, tune -= 256;
if (root < 0) {
vp->v.root_freq = freq_table[0] * (double) bend_fine[tune]
/ bend_coarse[-root] + 0.5;
vp->v.scale_freq = 0; /* scale freq */
} else if (root > 127) {
vp->v.root_freq = freq_table[127] * (double) bend_fine[tune]
* bend_coarse[root - 127] + 0.5;
vp->v.scale_freq = 127; /* scale freq */
} else {
vp->v.root_freq = freq_table[root] * (double) bend_fine[tune] + 0.5;
vp->v.scale_freq = root; /* scale freq */
}
}
/*----------------------------------------------------------------*/
/*Pseudo Reverb*/
extern int32_t modify_release;
/* volume envelope parameters */
void Instruments::convert_volume_envelope(SampleList *vp, LayerTable *tbl)
{
vp->attack = to_rate(65535, tbl->val[SF_attackEnv2]);
vp->hold = to_rate(1, tbl->val[SF_holdEnv2]);
vp->sustain = calc_sustain(tbl->val[SF_sustainEnv2]);
vp->decay = to_rate(65533 - vp->sustain, tbl->val[SF_decayEnv2]);
if(modify_release) /* Pseudo Reverb */
vp->release = calc_rate(65535, modify_release);
else
vp->release = to_rate(65535, tbl->val[SF_releaseEnv2]);
vp->v.envelope_delay = playback_rate *
to_msec(tbl->val[SF_delayEnv2]) * 0.001;
/* convert modulation envelope */
vp->modattack = to_rate(65535, tbl->val[SF_attackEnv1]);
vp->modhold = to_rate(1, tbl->val[SF_holdEnv1]);
vp->modsustain = calc_sustain(tbl->val[SF_sustainEnv1]);
vp->moddecay = to_rate(65533 - vp->modsustain, tbl->val[SF_decayEnv1]);
if(modify_release) /* Pseudo Reverb */
vp->modrelease = calc_rate(65535, modify_release);
else
vp->modrelease = to_rate(65535, tbl->val[SF_releaseEnv1]);
vp->v.modenv_delay = playback_rate *
to_msec(tbl->val[SF_delayEnv1]) * 0.001;
vp->v.modes |= MODES_ENVELOPE;
}
/*----------------------------------------------------------------
* tremolo (LFO1) conversion
*----------------------------------------------------------------*/
void Instruments::convert_tremolo(SampleList *vp, LayerTable *tbl)
{
int32_t freq;
double level;
if (!tbl->set[SF_lfo1ToVolume])
return;
level = pow(10.0, (double)abs(tbl->val[SF_lfo1ToVolume]) / -200.0);
vp->v.tremolo_depth = 256 * (1.0 - level);
if ((int)tbl->val[SF_lfo1ToVolume] < 0) { vp->v.tremolo_depth = -vp->v.tremolo_depth; }
/* frequency in mHz */
if (!tbl->set[SF_freqLfo1])
freq = 0;
else
{
freq = (int)tbl->val[SF_freqLfo1];
freq = TO_MHZ(freq);
}
/* convert mHz to sine table increment; 1024<<rate_shift=1wave */
vp->v.tremolo_phase_increment = ((playback_rate / 1000 * freq) >> RATE_SHIFT) / control_ratio;
vp->v.tremolo_delay = playback_rate *
to_msec(tbl->val[SF_delayLfo1]) * 0.001;
}
/*----------------------------------------------------------------
* vibrato (LFO2) conversion
*----------------------------------------------------------------*/
void Instruments::convert_vibrato(SampleList *vp, LayerTable *tbl)
{
int32_t shift, freq;
if (!tbl->set[SF_lfo2ToPitch]) {
vp->v.vibrato_control_ratio = 0;
return;
}
shift = (int)tbl->val[SF_lfo2ToPitch];
/* cents to linear; 400cents = 256 */
shift = shift * 256 / 400;
if (shift > 255) { shift = 255; }
else if (shift < -255) { shift = -255; }
vp->v.vibrato_depth = (int16_t)shift;
/* frequency in mHz */
if (!tbl->set[SF_freqLfo2])
freq = 0;
else
{
freq = (int)tbl->val[SF_freqLfo2];
freq = TO_MHZ(freq);
if (freq == 0) { freq = 1; }
/* convert mHz to control ratio */
vp->v.vibrato_control_ratio = (1000 * playback_rate) /
(freq * 2 * VIBRATO_SAMPLE_INCREMENTS);
}
vp->v.vibrato_delay = playback_rate *
to_msec(tbl->val[SF_delayLfo2]) * 0.001;
}
}
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