sampler_layer.c

   1 /*
   2 Calf Box, an open source musical instrument.
   3 Copyright (C) 2010-2011 Krzysztof Foltman
   4
   5 This program is free software: you can redistribute it and/or modify
   6 it under the terms of the GNU General Public License as published by
   7 the Free Software Foundation, either version 3 of the License, or
   8 (at your option) any later version.
   9
  10 This program is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 GNU General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License
  16 along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17 */
  18
  19 #include "config-api.h"
  20 #include "dspmath.h"
  21 #include "errors.h"
  22 #include "midi.h"
  23 #include "module.h"
  24 #include "rt.h"
  25 #include "sampler.h"
  26 #include "sfzloader.h"
  27 #include <assert.h>
  28 #include <errno.h>
  29 #include <glib.h>
  30 #include <math.h>
  31 #include <memory.h>
  32 #include <sndfile.h>
  33 #include <stdio.h>
  34 #include <stdlib.h>
  35 #include <locale.h>
  36
  37 static void sampler_layer_data_set_modulation(struct sampler_layer_data *l, enum sampler_modsrc src, enum sampler_modsrc src2, enum sampler_moddest dest, float amount, int flags, gboolean propagating_defaults)
  38 {
  39     GSList *p = l->modulations;
  40     while(p)
  41     {
  42         struct sampler_modulation *sm = p->data;
  43         if (sm->src == src && sm->src2 == src2 && sm->dest == dest)
  44         {
  45             // do not overwrite locally set value with defaults
  46             if (propagating_defaults && sm->has_value)
  47                 return;
  48             sm->amount = amount;
  49             sm->flags = flags;
  50             sm->has_value = !propagating_defaults;
  51             return;
  52         }
  53         p = g_slist_next(p);
  54     }
  55     struct sampler_modulation *sm = g_malloc0(sizeof(struct sampler_modulation));
  56     sm->src = src;
  57     sm->src2 = src2;
  58     sm->dest = dest;
  59     sm->amount = amount;
  60     sm->flags = flags;
  61     sm->has_value = !propagating_defaults;
  62     l->modulations = g_slist_prepend(l->modulations, sm);
  63 }
  64
  65 void sampler_layer_set_modulation1(struct sampler_layer *l, enum sampler_modsrc src, enum sampler_moddest dest, float amount, int flags)
  66 {
  67     sampler_layer_data_set_modulation(&l->data, src, smsrc_none, dest, amount, flags, FALSE);
  68 }
  69
  70 void sampler_layer_set_modulation(struct sampler_layer *l, enum sampler_modsrc src, enum sampler_modsrc src2, enum sampler_moddest dest, float amount, int flags)
  71 {
  72     sampler_layer_data_set_modulation(&l->data, src, src2, dest, amount, flags, FALSE);
  73 }
  74
  75 void sampler_layer_data_add_nif(struct sampler_layer_data *l, SamplerNoteInitFunc notefunc, int variant, float param, gboolean propagating_defaults)
  76 {
  77     GSList *p = l->nifs;
  78     while(p)
  79     {
  80         struct sampler_noteinitfunc *nif = p->data;
  81         if (nif->notefunc == notefunc && nif->variant == variant)
  82         {
  83             // do not overwrite locally set value with defaults
  84             if (propagating_defaults && nif->has_value)
  85                 return;
  86             nif->param = param;
  87             nif->has_value = !propagating_defaults;
  88             return;
  89         }
  90         p = g_slist_next(p);
  91     }
  92     struct sampler_noteinitfunc *nif = malloc(sizeof(struct sampler_noteinitfunc));
  93     nif->notefunc = notefunc;
  94     nif->variant = variant;
  95     nif->param = param;
  96     nif->has_value = !propagating_defaults;
  97     l->nifs = g_slist_prepend(l->nifs, nif);
  98 }
  99
 100 void sampler_layer_add_nif(struct sampler_layer *l, SamplerNoteInitFunc notefunc, int variant, float param)
 101 {
 102     sampler_layer_data_add_nif(&l->data, notefunc, variant, param, FALSE);
 103 }
 104
 105 static gboolean sampler_layer_process_cmd(struct cbox_command_target *ct, struct cbox_command_target *fb, struct cbox_osc_command *cmd, GError **error)
 106 {
 107     struct sampler_layer *layer = ct->user_data;
 108     if (!strcmp(cmd->command, "/status") && !strcmp(cmd->arg_types, ""))
 109     {
 110         if (!cbox_check_fb_channel(fb, cmd->command, error))
 111             return FALSE;
 112
 113         if (!((!layer->parent_program || cbox_execute_on(fb, NULL, "/parent_program", "o", error, layer->parent_program)) &&
 114             (!layer->parent_group || cbox_execute_on(fb, NULL, "/parent_group", "o", error, layer->parent_group)) &&
 115             CBOX_OBJECT_DEFAULT_STATUS(layer, fb, error)))
 116             return FALSE;
 117         return TRUE;
 118     }
 119     if ((!strcmp(cmd->command, "/as_string") || !strcmp(cmd->command, "/as_string_full")) && !strcmp(cmd->arg_types, ""))
 120     {
 121         if (!cbox_check_fb_channel(fb, cmd->command, error))
 122             return FALSE;
 123         gchar *res = sampler_layer_to_string(layer, !strcmp(cmd->command, "/as_string_full"));
 124         gboolean result = cbox_execute_on(fb, NULL, "/value", "s", error, res);
 125         g_free(res);
 126         return result;
 127     }
 128     if (!strcmp(cmd->command, "/set_param") && !strcmp(cmd->arg_types, "ss"))
 129     {
 130         const char *key = CBOX_ARG_S(cmd, 0);
 131         const char *value = CBOX_ARG_S(cmd, 1);
 132         if (sampler_layer_apply_param(layer, key, value, error))
 133         {
 134             sampler_layer_update(layer);
 135             sampler_program_update_layers(layer->parent_program);
 136             return TRUE;
 137         }
 138         return FALSE;
 139     }
 140     if (!strcmp(cmd->command, "/new_region") && !strcmp(cmd->arg_types, ""))
 141     {
 142         // XXXKF needs a string argument perhaps
 143         if (layer->parent_group)
 144         {
 145             g_set_error(error, CBOX_MODULE_ERROR, CBOX_MODULE_ERROR_FAILED, "Cannot create a region within a region");
 146             return FALSE;
 147         }
 148         struct sampler_layer *l = sampler_layer_new(layer->module, layer->parent_program, layer);
 149         sampler_layer_data_finalize(&l->data, l->parent_group ? &l->parent_group->data : NULL, layer->parent_program);
 150         sampler_layer_reset_switches(l, l->module);
 151         sampler_layer_update(l);
 152
 153         sampler_program_add_layer(layer->parent_program, l);
 154         sampler_program_update_layers(layer->parent_program);
 155
 156         return cbox_execute_on(fb, NULL, "/uuid", "o", error, l);
 157     }
 158     if (!strcmp(cmd->command, "/get_children") && !strcmp(cmd->arg_types, ""))
 159     {
 160         if (!cbox_check_fb_channel(fb, cmd->command, error))
 161             return FALSE;
 162         GHashTableIter iter;
 163         g_hash_table_iter_init(&iter, layer->child_layers);
 164         gpointer key, value;
 165         while(g_hash_table_iter_next(&iter, &key, &value))
 166         {
 167             if (!cbox_execute_on(fb, NULL, "/region", "o", error, key))
 168                 return FALSE;
 169         }
 170         return TRUE;
 171     }
 172     // otherwise, treat just like an command on normal (non-aux) output
 173     return cbox_object_default_process_cmd(ct, fb, cmd, error);
 174
 175 }
 176
 177
 178 #define PROC_FIELDS_INITIALISER(type, name, def_value) \
 179     ld->name = def_value; \
 180     ld->has_##name = 0;
 181 #define PROC_FIELDS_INITIALISER_string(name) \
 182     ld->name = NULL; \
 183     ld->name##_changed = FALSE; \
 184     ld->has_##name = 0;
 185 #define PROC_FIELDS_INITIALISER_enum(type, name, def_value) \
 186     PROC_FIELDS_INITIALISER(type, name, def_value)
 187 #define PROC_FIELDS_INITIALISER_dBamp(type, name, def_value) \
 188     ld->name = def_value; \
 189     ld->name##_linearized = -1; \
 190     ld->has_##name = 0;
 191 #define PROC_FIELDS_INITIALISER_dahdsr(name, parname, index) \
 192     DAHDSR_FIELDS(PROC_SUBSTRUCT_RESET_FIELD, name, ld); \
 193     DAHDSR_FIELDS(PROC_SUBSTRUCT_RESET_HAS_FIELD, name, ld)
 194 #define PROC_FIELDS_INITIALISER_lfo(name, parname, index) \
 195     LFO_FIELDS(PROC_SUBSTRUCT_RESET_FIELD, name, ld); \
 196     LFO_FIELDS(PROC_SUBSTRUCT_RESET_HAS_FIELD, name, ld)
 197 #define PROC_FIELDS_INITIALISER_ccrange(name) \
 198     ld->name##locc = 0; \
 199     ld->name##hicc = 127; \
 200     ld->name##cc_number = 0; \
 201     ld->has_##name##locc = 0; \
 202     ld->has_##name##hicc = 0;
 203
 204 CBOX_CLASS_DEFINITION_ROOT(sampler_layer)
 205
 206 struct sampler_layer *sampler_layer_new(struct sampler_module *m, struct sampler_program *parent_program, struct sampler_layer *parent_group)
 207 {
 208     struct sampler_layer *l = calloc(1, sizeof(struct sampler_layer));
 209     struct cbox_document *doc = CBOX_GET_DOCUMENT(parent_program);
 210     memset(l, 0, sizeof(struct sampler_layer));
 211     CBOX_OBJECT_HEADER_INIT(l, sampler_layer, doc);
 212     cbox_command_target_init(&l->cmd_target, sampler_layer_process_cmd, l);
 213
 214     l->module = m;
 215     l->child_layers = g_hash_table_new(NULL, NULL);
 216     if (parent_group)
 217     {
 218         sampler_layer_data_clone(&l->data, &parent_group->data, FALSE);
 219         l->parent_program = parent_program;
 220         l->parent_group = parent_group;
 221         g_hash_table_replace(parent_group->child_layers, l, l);
 222         l->runtime = NULL;
 223         CBOX_OBJECT_REGISTER(l);
 224         return l;
 225     }
 226     l->parent_program = parent_program;
 227
 228     struct sampler_layer_data *ld = &l->data;
 229     SAMPLER_FIXED_FIELDS(PROC_FIELDS_INITIALISER)
 230
 231     ld->eff_waveform = NULL;
 232     ld->eff_freq = 44100;
 233     ld->velcurve[0] = 0;
 234     ld->velcurve[127] = 1;
 235     for (int i = 1; i < 127; i++)
 236         ld->velcurve[i] = -1;
 237     ld->modulations = NULL;
 238     ld->nifs = NULL;
 239     ld->on_locc = 0;
 240     ld->on_hicc = 127;
 241     ld->on_cc_number = -1;
 242
 243     ld->eff_use_keyswitch = 0;
 244     l->last_key = -1;
 245     if (!parent_group)
 246     {
 247         sampler_layer_set_modulation1(l, 74, smdest_cutoff, 9600, 2);
 248         sampler_layer_set_modulation1(l, 71, smdest_resonance, 12, 2);
 249         sampler_layer_set_modulation(l, smsrc_pitchlfo, 1, smdest_pitch, 100, 0);
 250     }
 251     l->runtime = NULL;
 252     l->unknown_keys = NULL;
 253     CBOX_OBJECT_REGISTER(l);
 254     return l;
 255 }
 256
 257 #define PROC_FIELDS_CLONE(type, name, def_value) \
 258     dst->name = src->name; \
 259     dst->has_##name = copy_hasattr ? src->has_##name : FALSE;
 260 #define PROC_FIELDS_CLONE_string(name) \
 261     dst->name = src->name ? g_strdup(src->name) : NULL; \
 262     dst->name##_changed = src->name##_changed; \
 263     dst->has_##name = copy_hasattr ? src->has_##name : FALSE;
 264 #define PROC_FIELDS_CLONE_dBamp PROC_FIELDS_CLONE
 265 #define PROC_FIELDS_CLONE_enum PROC_FIELDS_CLONE
 266 #define PROC_FIELDS_CLONE_dahdsr(name, parname, index) \
 267         DAHDSR_FIELDS(PROC_SUBSTRUCT_CLONE, name, dst, src) \
 268         if (!copy_hasattr) \
 269             DAHDSR_FIELDS(PROC_SUBSTRUCT_RESET_HAS_FIELD, name, dst)
 270 #define PROC_FIELDS_CLONE_lfo(name, parname, index) \
 271         LFO_FIELDS(PROC_SUBSTRUCT_CLONE, name, dst, src) \
 272         if (!copy_hasattr) \
 273             LFO_FIELDS(PROC_SUBSTRUCT_RESET_HAS_FIELD, name, dst)
 274 #define PROC_FIELDS_CLONE_ccrange(name) \
 275     dst->name##locc = src->name##locc; \
 276     dst->name##hicc = src->name##hicc; \
 277     dst->name##cc_number = src->name##cc_number; \
 278     dst->has_##name##locc = copy_hasattr ? src->has_##name##locc : FALSE; \
 279     dst->has_##name##hicc = copy_hasattr ? src->has_##name##hicc : FALSE;
 280
 281 void sampler_layer_data_clone(struct sampler_layer_data *dst, const struct sampler_layer_data *src, gboolean copy_hasattr)
 282 {
 283     SAMPLER_FIXED_FIELDS(PROC_FIELDS_CLONE)
 284     memcpy(dst->velcurve, src->velcurve, 128 * sizeof(float));
 285     dst->modulations = g_slist_copy(src->modulations);
 286     for(GSList *mod = dst->modulations; mod; mod = mod->next)
 287     {
 288         struct sampler_modulation *srcm = mod->data;
 289         struct sampler_modulation *dstm = g_malloc(sizeof(struct sampler_modulation));
 290         memcpy(dstm, srcm, sizeof(struct sampler_modulation));
 291         dstm->has_value = copy_hasattr ? srcm->has_value : FALSE;
 292         mod->data = dstm;
 293     }
 294     dst->nifs = g_slist_copy(src->nifs);
 295     for(GSList *nif = dst->nifs; nif; nif = nif->next)
 296     {
 297         struct sampler_noteinitfunc *dstn = g_malloc(sizeof(struct sampler_noteinitfunc));
 298         struct sampler_noteinitfunc *srcn = nif->data;
 299         memcpy(dstn, srcn, sizeof(struct sampler_noteinitfunc));
 300         dstn->has_value = copy_hasattr ? srcn->has_value : FALSE;
 301         nif->data = dstn;
 302     }
 303     dst->eff_waveform = src->eff_waveform;
 304     if (dst->eff_waveform)
 305         cbox_waveform_ref(dst->eff_waveform);
 306 }
 307
 308 #define PROC_FIELDS_CLONEPARENT(type, name, def_value) \
 309     if (!l->has_##name) \
 310         l->name = parent ? parent->name : def_value;
 311 #define PROC_FIELDS_CLONEPARENT_string(name) \
 312     if (!l->has_##name && (!l->name || !parent->name || strcmp(l->name, parent->name))) { \
 313         g_free(l->name); \
 314         l->name = parent && parent->name ? g_strdup(parent->name) : NULL; \
 315         l->name##_changed = parent && parent->name##_changed; \
 316     }
 317 #define PROC_FIELDS_CLONEPARENT_dBamp PROC_FIELDS_CLONEPARENT
 318 #define PROC_FIELDS_CLONEPARENT_enum PROC_FIELDS_CLONEPARENT
 319 #define PROC_FIELDS_CLONEPARENT_dahdsr(name, parname, index) \
 320         DAHDSR_FIELDS(PROC_SUBSTRUCT_CLONEPARENT, name, l)
 321 #define PROC_FIELDS_CLONEPARENT_lfo(name, parname, index) \
 322         LFO_FIELDS(PROC_SUBSTRUCT_CLONEPARENT, name, l)
 323 #define PROC_FIELDS_CLONEPARENT_ccrange(name) \
 324     if (!l->has_##name##locc) \
 325         l->name##locc = parent ? parent->name##locc : 0; \
 326     if (!l->has_##name##hicc) \
 327         l->name##hicc = parent ? parent->name##hicc : 127; \
 328     if (!l->has_##name##locc && !l->has_##name##hicc) \
 329         l->name##cc_number = parent ? parent->name##cc_number : -1;
 330
 331 static void sampler_layer_data_getdefaults(struct sampler_layer_data *l, struct sampler_layer_data *parent)
 332 {
 333     SAMPLER_FIXED_FIELDS(PROC_FIELDS_CLONEPARENT)
 334     // XXXKF: add handling for velcurve
 335     if (parent)
 336     {
 337         // set NIFs used by parent
 338         for(GSList *mod = parent->nifs; mod; mod = mod->next)
 339         {
 340             struct sampler_noteinitfunc *nif = mod->data;
 341             sampler_layer_data_add_nif(l, nif->notefunc, nif->variant, nif->param, TRUE);
 342         }
 343         // set modulations used by parent
 344         for(GSList *mod = parent->modulations; mod; mod = mod->next)
 345         {
 346             struct sampler_modulation *srcm = mod->data;
 347             sampler_layer_data_set_modulation(l, srcm->src, srcm->src2, srcm->dest, srcm->amount, srcm->flags, TRUE);
 348         }
 349     }
 350 }
 351
 352 #define PROC_FIELDS_FINALISER(type, name, def_value)
 353 #define PROC_FIELDS_FINALISER_string(name)
 354 #define PROC_FIELDS_FINALISER_enum(type, name, def_value)
 355 #define PROC_FIELDS_FINALISER_dBamp(type, name, def_value) \
 356     l->name##_linearized = dB2gain(l->name);
 357 #define PROC_FIELDS_FINALISER_dahdsr(name, parname, index) \
 358     cbox_envelope_init_dahdsr(&l->name##_shape, &l->name, m->module.srate / CBOX_BLOCK_SIZE, 100.f, &l->name##_shape == &l->amp_env_shape);
 359 #define PROC_FIELDS_FINALISER_lfo(name, parname, index) /* no finaliser required */
 360 #define PROC_FIELDS_FINALISER_ccrange(name) /* no finaliser required */
 361
 362 void sampler_layer_data_finalize(struct sampler_layer_data *l, struct sampler_layer_data *parent, struct sampler_program *p)
 363 {
 364     struct sampler_module *m = p->module;
 365     SAMPLER_FIXED_FIELDS(PROC_FIELDS_FINALISER)
 366
 367     sampler_layer_data_getdefaults(l, parent);
 368
 369     // Handle change of sample in the prent group without override on region level
 370     if (parent && (l->sample_changed || parent->sample_changed))
 371     {
 372         struct cbox_waveform *oldwf = l->eff_waveform;
 373         if (l->sample && *l->sample)
 374         {
 375             GError *error = NULL;
 376             l->eff_waveform = cbox_wavebank_get_waveform(p->name, p->sample_dir, l->sample, &error);
 377             if (!l->eff_waveform)
 378             {
 379                 g_warning("Cannot load waveform %s: %s", l->sample, error ? error->message : "unknown error");
 380                 g_error_free(error);
 381             }
 382         }
 383         else
 384             l->eff_waveform = NULL;
 385         if (oldwf)
 386             cbox_waveform_unref(oldwf);
 387         l->sample_changed = FALSE;
 388     }
 389
 390     l->eff_freq = (l->eff_waveform && l->eff_waveform->info.samplerate) ? l->eff_waveform->info.samplerate : 44100;
 391     // XXXKF should have a distinction between 'configured' and 'effective' loop start/end
 392     if (l->loop_mode == slm_unknown)
 393     {
 394         if (l->eff_waveform && l->eff_waveform->has_loop)
 395             l->loop_mode = slm_loop_continuous;
 396         else
 397             l->loop_mode = l->loop_end == 0 ? slm_no_loop : slm_loop_continuous;
 398     }
 399
 400     if (l->loop_mode == slm_one_shot || l->loop_mode == slm_no_loop || l->loop_mode == slm_one_shot_chokeable)
 401         l->loop_start = -1;
 402
 403     if ((l->loop_mode == slm_loop_continuous || l->loop_mode == slm_loop_sustain) && l->loop_start == -1)
 404         l->loop_start = 0;
 405     if ((l->loop_mode == slm_loop_continuous || l->loop_mode == slm_loop_sustain) && l->loop_start == 0 && l->eff_waveform && l->eff_waveform->has_loop)
 406         l->loop_start = l->eff_waveform->loop_start;
 407     if (l->loop_end == 0 && l->eff_waveform != NULL && l->eff_waveform->has_loop)
 408         l->loop_end = l->eff_waveform->loop_end;
 409
 410     if (l->off_mode == som_unknown)
 411         l->off_mode = l->off_by != 0 ? som_fast : som_normal;
 412
 413     // if no amp_velcurve_nnn setting, default to quadratic
 414     if (l->velcurve_quadratic == -1)
 415         l->velcurve_quadratic = 1;
 416
 417     if (l->key >= 0 && l->key <= 127)
 418         l->lokey = l->hikey = l->pitch_keycenter = l->key;
 419
 420     // interpolate missing points in velcurve
 421     int start = 0;
 422     for (int i = 1; i < 128; i++)
 423     {
 424         if (l->velcurve[i] == -1)
 425             continue;
 426         float sv = l->velcurve[start];
 427         float ev = l->velcurve[i];
 428         if (l->velcurve_quadratic)
 429         {
 430             for (int j = start; j <= i; j++)
 431                 l->eff_velcurve[j] = sv + (ev - sv) * (j - start) * (j - start) / ((i - start) * (i - start));
 432         }
 433         else
 434         {
 435             for (int j = start; j <= i; j++)
 436                 l->eff_velcurve[j] = sv + (ev - sv) * (j - start) / (i - start);
 437         }
 438         start = i;
 439     }
 440     l->eff_use_keyswitch = ((l->sw_down != -1) || (l->sw_up != -1) || (l->sw_last != -1) || (l->sw_previous != -1));
 441
 442     // 'linearize' the virtual circular buffer - write 3 (or N) frames before end of the loop
 443     // and 3 (N) frames at the start of the loop, and play it; in rare cases this will need to be
 444     // repeated twice if output write pointer is close to CBOX_BLOCK_SIZE or playback rate is very low,
 445     // but that's OK.
 446     if (l->eff_waveform && l->eff_waveform->preloaded_frames == l->eff_waveform->info.frames)
 447     {
 448         int shift = l->eff_waveform->info.channels == 2 ? 1 : 0;
 449         uint32_t halfscratch = MAX_INTERPOLATION_ORDER << shift;
 450         memcpy(&l->scratch_loop[0], &l->eff_waveform->data[(l->loop_end - MAX_INTERPOLATION_ORDER) << shift], halfscratch * sizeof(int16_t) );
 451         memcpy(&l->scratch_end[0], &l->eff_waveform->data[(l->loop_end - MAX_INTERPOLATION_ORDER) << shift], halfscratch * sizeof(int16_t) );
 452         memset(l->scratch_end + halfscratch, 0, halfscratch * sizeof(int16_t));
 453         if (l->loop_start != (uint32_t)-1)
 454             memcpy(l->scratch_loop + halfscratch, &l->eff_waveform->data[l->loop_start << shift], halfscratch * sizeof(int16_t));
 455         else
 456             memset(l->scratch_loop + halfscratch, 0, halfscratch * sizeof(int16_t));
 457     }
 458 }
 459
 460 void sampler_layer_reset_switches(struct sampler_layer *l, struct sampler_module *m)
 461 {
 462     l->last_key = l->data.sw_lokey;
 463     l->current_seq_position = l->data.seq_position;
 464 }
 465
 466 struct layer_foreach_struct
 467 {
 468     struct sampler_layer *layer;
 469     const char *cfg_section;
 470 };
 471
 472 static void layer_foreach_func(void *user_data, const char *key)
 473 {
 474     if (!strcmp(key, "file"))
 475         key = "sample";
 476     // import is handled in sampler_load_layer_overrides
 477     if (!strcmp(key, "import"))
 478         return;
 479     struct layer_foreach_struct *lfs = user_data;
 480     const char *value = cbox_config_get_string(lfs->cfg_section, key);
 481     GError *error = NULL;
 482     if (!sampler_layer_apply_param(lfs->layer, key, value, &error))
 483     {
 484         if (error)
 485             g_warning("Error '%s', context: %s in section %s", error->message, key, lfs->cfg_section);
 486         else
 487             g_warning("Unknown sample layer parameter: %s in section %s", key, lfs->cfg_section);
 488     }
 489 }
 490
 491 void sampler_layer_load_overrides(struct sampler_layer *l, const char *cfg_section)
 492 {
 493     char *imp = cbox_config_get_string(cfg_section, "import");
 494     if (imp)
 495         sampler_layer_load_overrides(l, imp);
 496
 497     struct layer_foreach_struct lfs = {
 498         .layer = l,
 499         .cfg_section = cfg_section
 500     };
 501     cbox_config_foreach_key(layer_foreach_func, cfg_section, &lfs);
 502 }
 503
 504 struct sampler_layer *sampler_layer_new_from_section(struct sampler_module *m, struct sampler_program *parent_program, const char *cfg_section)
 505 {
 506     struct sampler_layer *l = sampler_layer_new(m, parent_program, NULL);
 507     sampler_layer_load_overrides(l, cfg_section);
 508     sampler_layer_data_finalize(&l->data, l->parent_group ? &l->parent_group->data : NULL, parent_program);
 509     sampler_layer_reset_switches(l, m);
 510     return l;
 511 }
 512
 513 static int sfz_note_from_string(const char *note)
 514 {
 515     static const int semis[] = {9, 11, 0, 2, 4, 5, 7};
 516     int pos;
 517     int nn = tolower(note[0]);
 518     int nv;
 519     if (nn >= '0' && nn <= '9')
 520         return atoi(note);
 521     if (nn < 'a' && nn > 'g')
 522         return -1;
 523     nv = semis[nn - 'a'];
 524
 525     for (pos = 1; tolower(note[pos]) == 'b' || note[pos] == '#'; pos++)
 526         nv += (note[pos] != '#') ? -1 : +1;
 527
 528     if ((note[pos] == '-' && note[pos + 1] == '1' && note[pos + 2] == '\0') || (note[pos] >= '0' && note[pos] <= '9' && note[pos + 1] == '\0'))
 529     {
 530         return nv + 12 * (1 + atoi(note + pos));
 531     }
 532
 533     return -1;
 534 }
 535
 536 static double atof_C(const char *value)
 537 {
 538     return g_ascii_strtod(value, NULL);
 539 }
 540
 541 static gboolean parse_envelope_param(struct sampler_layer *layer, struct cbox_dahdsr *env, struct sampler_dahdsr_has_fields *has_fields, int env_type, const char *key, const char *value)
 542 {
 543     static const enum sampler_modsrc srcs[] = { smsrc_ampenv, smsrc_filenv, smsrc_pitchenv };
 544     static const enum sampler_moddest dests[] = { smdest_gain, smdest_cutoff, smdest_pitch };
 545     enum sampler_modsrc src = srcs[env_type];
 546     enum sampler_moddest dest = dests[env_type];
 547     float fvalue = atof_C(value);
 548
 549 #define PROC_SET_ENV_FIELD(name, index, def_value) \
 550         if (!strcmp(key, #name)) {\
 551             env->name = fvalue; \
 552             has_fields->name = 1; \
 553             return TRUE; \
 554         }
 555     DAHDSR_FIELDS(PROC_SET_ENV_FIELD)
 556     if (!strcmp(key, "depth"))
 557         sampler_layer_set_modulation1(layer, src, dest, atof_C(value), 0);
 558     else if (!strcmp(key, "vel2delay"))
 559         sampler_layer_add_nif(layer, sampler_nif_vel2env, (env_type << 4) + 0, fvalue);
 560     else if (!strcmp(key, "vel2attack"))
 561         sampler_layer_add_nif(layer, sampler_nif_vel2env, (env_type << 4) + 1, fvalue);
 562     else if (!strcmp(key, "vel2hold"))
 563         sampler_layer_add_nif(layer, sampler_nif_vel2env, (env_type << 4) + 2, fvalue);
 564     else if (!strcmp(key, "vel2decay"))
 565         sampler_layer_add_nif(layer, sampler_nif_vel2env, (env_type << 4) + 3, fvalue);
 566     else if (!strcmp(key, "vel2sustain"))
 567         sampler_layer_add_nif(layer, sampler_nif_vel2env, (env_type << 4) + 4, fvalue);
 568     else if (!strcmp(key, "vel2release"))
 569         sampler_layer_add_nif(layer, sampler_nif_vel2env, (env_type << 4) + 5, fvalue);
 570     else if (!strcmp(key, "vel2depth"))
 571         sampler_layer_set_modulation(layer, src, smsrc_vel, dest, atof_C(value), 0);
 572     else if (!strncmp(key, "depthcc", 7))
 573     {
 574         int cc = atoi(key + 7);
 575         if (cc > 0 && cc < 120)
 576             sampler_layer_set_modulation(layer, src, cc, dest, fvalue, 0);
 577         else
 578             return FALSE;
 579     }
 580     else
 581         return FALSE;
 582     return TRUE;
 583 }
 584
 585 static gboolean parse_lfo_param(struct sampler_layer *layer, struct sampler_lfo_params *params, struct sampler_lfo_has_fields *has_fields, int lfo_type, const char *key, const char *value)
 586 {
 587     static const enum sampler_modsrc srcs[] = { smsrc_amplfo, smsrc_fillfo, smsrc_pitchlfo };
 588     static const enum sampler_moddest dests[] = { smdest_gain, smdest_cutoff, smdest_pitch };
 589     enum sampler_modsrc src = srcs[lfo_type];
 590     enum sampler_moddest dest = dests[lfo_type];
 591
 592 #define PROC_SET_LFO_FIELD(name, index, def_value) \
 593         if (!strcmp(key, #name)) {\
 594             params->name = fvalue; \
 595             has_fields->name = 1; \
 596             return TRUE; \
 597         }
 598     float fvalue = atof_C(value);
 599     LFO_FIELDS(PROC_SET_LFO_FIELD)
 600     if (!strcmp(key, "depth"))
 601         sampler_layer_set_modulation1(layer, src, dest, fvalue, 0);
 602     else if (!strcmp(key, "depthchanaft"))
 603         sampler_layer_set_modulation(layer, src, smsrc_chanaft, dest, fvalue, 0);
 604     else if (!strcmp(key, "depthpolyaft"))
 605         sampler_layer_set_modulation(layer, src, smsrc_polyaft, dest, fvalue, 0);
 606     else if (!strncmp(key, "depthcc", 7))
 607     {
 608         int cc = atoi(key + 7);
 609         if (cc > 0 && cc < 120)
 610             sampler_layer_set_modulation(layer, src, cc, dest, fvalue, 0);
 611         else
 612             return FALSE;
 613     }
 614     else
 615         return FALSE;
 616     return TRUE;
 617 }
 618
 619 #define PARSE_PARAM_midi_note_t(field, strname, valuestr) \
 620     return ((l->data.field = sfz_note_from_string(value)), (l->data.has_##field = 1));
 621 #define PARSE_PARAM_int(field, strname, valuestr) \
 622     return ((l->data.field = atoi(value)), (l->data.has_##field = 1));
 623 #define PARSE_PARAM_uint32_t(field, strname, valuestr) \
 624     return ((l->data.field = (uint32_t)strtoul(value, NULL, 10)), (l->data.has_##field = 1));
 625 #define PARSE_PARAM_float(field, strname, valuestr) \
 626     return ((l->data.field = atof_C(value)), (l->data.has_##field = 1));
 627
 628 #define PROC_APPLY_PARAM(type, name, def_value) \
 629     if (!strcmp(key, #name)) { \
 630         PARSE_PARAM_##type(name, #name, value) \
 631     }
 632 #define PROC_APPLY_PARAM_string(name) \
 633     if (!strcmp(key, #name)) { \
 634         if (l->data.name && value && !strcmp(l->data.name, value)) \
 635             return (l->data.has_##name = 1); \
 636         g_free(l->data.name); \
 637         return ((l->data.name = g_strdup(value)), (l->data.name##_changed = 1), (l->data.has_##name = 1)); \
 638     }
 639 #define PROC_APPLY_PARAM_dBamp(type, name, def_value) \
 640     if (!strcmp(key, #name)) { \
 641         return ((l->data.name = atof_C(value)), (l->data.has_##name = 1)); \
 642     }
 643 #define PROC_APPLY_PARAM_enum(enumtype, name, def_value) \
 644     if (!strcmp(key, #name)) { \
 645         if (!enumtype##_from_string(value, &l->data.name)) { \
 646             g_set_error(error, CBOX_MODULE_ERROR, CBOX_MODULE_ERROR_FAILED, "Value %s is not a correct value for %s", value, #name); \
 647             return FALSE; \
 648         } \
 649         l->data.has_##name = 1; \
 650         return TRUE; \
 651     }
 652 // LFO and envelope need special handling now
 653 #define PROC_APPLY_PARAM_dahdsr(name, parname, index) \
 654     if (!strncmp(key, #parname "_", sizeof(#parname))) \
 655         return parse_envelope_param(l, &l->data.name, &l->data.has_##name, index, key + sizeof(#parname), value);
 656 #define PROC_APPLY_PARAM_lfo(name, parname, index) \
 657     if (!strncmp(key, #parname "_", sizeof(#parname))) \
 658         return parse_lfo_param(l, &l->data.name, &l->data.has_##name, index, key + sizeof(#parname), value);
 659 #define PROC_APPLY_PARAM_ccrange(name)  /* handled separately in apply_param */
 660
 661 static void sampler_layer_apply_unknown(struct sampler_layer *l, const char *key, const char *value)
 662 {
 663     if (!l->unknown_keys)
 664         l->unknown_keys = g_hash_table_new_full(g_str_hash, g_str_equal, g_free, g_free);
 665
 666     g_hash_table_insert(l->unknown_keys, g_strdup(key), g_strdup(value));
 667 }
 668
 669 gboolean sampler_layer_apply_param(struct sampler_layer *l, const char *key, const char *value, GError **error)
 670 {
 671 try_now:
 672     // XXXKF: this is seriously stupid code, this should use a hash table for
 673     // fixed strings, or something else that doesn't explode O(N**2) with
 674     // number of attributes. But premature optimization is a root of all evil.
 675
 676     SAMPLER_FIXED_FIELDS(PROC_APPLY_PARAM)
 677
 678     // XXXKF: to make things worse, some attributes have names different from
 679     // C field names, or have multiple names, or don't map 1:1 to internal model
 680
 681     if (!strcmp(key, "lolev"))
 682         l->data.lovel = atoi(value), l->data.has_lovel = 1;
 683     else if (!strcmp(key, "hilev"))
 684         l->data.hivel = atoi(value), l->data.has_hivel = 1;
 685     else if (!strcmp(key, "benddown"))
 686         l->data.bend_down = atoi(value), l->data.has_bend_down = 1;
 687     else if (!strcmp(key, "bendup"))
 688         l->data.bend_up = atoi(value), l->data.has_bend_up = 1;
 689     else if (!strcmp(key, "loopstart"))
 690         l->data.loop_start = atoi(value), l->data.has_loop_start = 1;
 691     else if (!strcmp(key, "loopend"))
 692         l->data.loop_end = atoi(value), l->data.has_loop_end = 1;
 693     else if (!strcmp(key, "cutoff_chanaft"))
 694         sampler_layer_set_modulation1(l, smsrc_chanaft, smdest_cutoff, atof_C(value), 0);
 695     else if (!strcmp(key, "amp_random"))
 696         sampler_layer_add_nif(l, sampler_nif_addrandom, 0, atof_C(value));
 697     else if (!strcmp(key, "fil_random"))
 698         sampler_layer_add_nif(l, sampler_nif_addrandom, 1, atof_C(value));
 699     else if (!strcmp(key, "pitch_random"))
 700         sampler_layer_add_nif(l, sampler_nif_addrandom, 2, atof_C(value));
 701     else if (!strcmp(key, "pitch_veltrack"))
 702         sampler_layer_add_nif(l, sampler_nif_vel2pitch, 0, atof_C(value));
 703     else if (!strncmp(key, "delay_cc", 8))
 704     {
 705         int ccno = atoi(key + 8);
 706         if (ccno > 0 && ccno < 120)
 707             sampler_layer_add_nif(l, sampler_nif_cc2delay, ccno, atof_C(value));
 708         else
 709             goto unknown_key;
 710     }
 711     else if (!strncmp(key, "cutoff_cc", 9))
 712     {
 713         int ccno = atoi(key + 9);
 714         if (ccno > 0 && ccno < 120)
 715             sampler_layer_set_modulation1(l, ccno, smdest_cutoff, atof_C(value), 0);
 716         else
 717             goto unknown_key;
 718     }
 719     else if (!strncmp(key, "gain_cc", 7))
 720     {
 721         int ccno = atoi(key + 7);
 722         if (ccno > 0 && ccno < 120)
 723             sampler_layer_set_modulation1(l, ccno, smdest_gain, atof_C(value), 0);
 724         else
 725             goto unknown_key;
 726     }
 727     else if (!strncmp(key, "amp_velcurve_", 13))
 728     {
 729         // if not known yet, set to 0, it can always be overriden via velcurve_quadratic setting
 730         if (l->data.velcurve_quadratic == -1)
 731             l->data.velcurve_quadratic = 0;
 732         int point = atoi(key + 13);
 733         if (point >= 0 && point <= 127)
 734         {
 735             l->data.velcurve[point] = atof_C(value);
 736             if (l->data.velcurve[point] < 0)
 737                 l->data.velcurve[point] = 0;
 738             if (l->data.velcurve[point] > 1)
 739                 l->data.velcurve[point] = 1;
 740         }
 741         else
 742             goto unknown_key;
 743     }
 744     else if (!strncmp(key, "on_locc", 7) || !strncmp(key, "on_hicc", 7))
 745     {
 746         int cc = atoi(key + 7);
 747         if (cc > 0 && cc < 120)
 748         {
 749             if (*value)
 750             {
 751                 l->data.on_cc_number = cc;
 752                 if (key[3] == 'l')
 753                 {
 754                     l->data.on_locc = atoi(value);
 755                     l->data.has_on_locc = TRUE;
 756                 }
 757                 else
 758                 {
 759                     l->data.on_hicc = atoi(value);
 760                     l->data.has_on_hicc = TRUE;
 761                 }
 762             }
 763             else
 764             {
 765                 l->data.on_cc_number = -1;
 766                 l->data.has_on_locc = FALSE;
 767                 l->data.has_on_hicc = FALSE;
 768             }
 769         }
 770         else
 771             return FALSE;
 772     }
 773     else if (!strncmp(key, "locc", 4) || !strncmp(key, "hicc", 4))
 774     {
 775         int cc = atoi(key + 4);
 776         if (cc > 0 && cc < 120)
 777         {
 778             if (*value)
 779             {
 780                 l->data.cc_number = cc;
 781                 if (key[0] == 'l')
 782                 {
 783                     l->data.locc = atoi(value);
 784                     l->data.has_locc = TRUE;
 785                 }
 786                 else
 787                 {
 788                     l->data.hicc = atoi(value);
 789                     l->data.has_hicc = TRUE;
 790                 }
 791             }
 792             else
 793             {
 794                 l->data.cc_number = -1;
 795                 l->data.has_locc = FALSE;
 796                 l->data.has_hicc = FALSE;
 797             }
 798         }
 799         else
 800             return FALSE;
 801     }
 802     else if (!strcmp(key, "loopmode"))
 803     {
 804         key = "loop_mode";
 805         goto try_now; // yes, goto, why not?
 806     }
 807     else if (!strcmp(key, "offby"))
 808     {
 809         key = "off_by";
 810         goto try_now;
 811     }
 812     else
 813         goto unknown_key;
 814
 815     return TRUE;
 816 unknown_key:
 817     sampler_layer_apply_unknown(l, key, value);
 818     g_warning("Unknown SFZ property key: '%s'", key);
 819     return TRUE;
 820 }
 821
 822 #define TYPE_PRINTF_uint32_t(name, def_value) \
 823     if (show_inherited || l->has_##name) \
 824         g_string_append_printf(outstr, " %s=%u", #name, (unsigned)(l->name));
 825 #define TYPE_PRINTF_int(name, def_value) \
 826     if (show_inherited || l->has_##name) \
 827         g_string_append_printf(outstr, " %s=%d", #name, (int)(l->name));
 828 #define TYPE_PRINTF_midi_note_t(name, def_value) \
 829     if (show_inherited || l->has_##name) { \
 830         int val = l->name; \
 831         if (val == -1) \
 832             g_string_append_printf(outstr, " %s=-1", #name); \
 833         else \
 834             g_string_append_printf(outstr, " %s=%c%s%d", #name, "ccddeffggaab"[val%12], "\000#\000#\000\000#\000#\000#\000#\000"+(val%12), (val/12-1)); \
 835     } else {}
 836 #define TYPE_PRINTF_float(name, def_value) \
 837     if (show_inherited || l->has_##name) \
 838         g_string_append_printf(outstr, " %s=%s", #name, g_ascii_dtostr(floatbuf, floatbufsize, l->name));
 839
 840 #define PROC_FIELDS_TO_FILEPTR(type, name, def_value) \
 841     TYPE_PRINTF_##type(name, def_value)
 842 #define PROC_FIELDS_TO_FILEPTR_string(name) \
 843     if (show_inherited || l->has_##name) \
 844         g_string_append_printf(outstr, " %s=%s", #name, l->name ? l->name : "");
 845 #define PROC_FIELDS_TO_FILEPTR_dBamp(type, name, def_value) \
 846     if (show_inherited || l->has_##name) \
 847         g_string_append_printf(outstr, " %s=%s", #name, g_ascii_dtostr(floatbuf, floatbufsize, l->name));
 848 #define PROC_FIELDS_TO_FILEPTR_enum(enumtype, name, def_value) \
 849     if ((show_inherited || l->has_##name) && (tmpstr = enumtype##_to_string(l->name)) != NULL) \
 850         g_string_append_printf(outstr, " %s=%s", #name, tmpstr);
 851
 852 #define ENV_PARAM_OUTPUT(param, index, def_value, env, envfield, envname) \
 853     if (show_inherited || l->has_##envfield.param) \
 854         g_string_append_printf(outstr, " " #envname "_" #param "=%s", g_ascii_dtostr(floatbuf, floatbufsize, env.param));
 855
 856 #define PROC_FIELDS_TO_FILEPTR_dahdsr(name, parname, index) \
 857     DAHDSR_FIELDS(ENV_PARAM_OUTPUT, l->name, name, parname)
 858 #define PROC_FIELDS_TO_FILEPTR_lfo(name, parname, index) \
 859     LFO_FIELDS(ENV_PARAM_OUTPUT, l->name, name, parname)
 860 #define PROC_FIELDS_TO_FILEPTR_ccrange(name) \
 861     if (l->has_##name##locc) \
 862         g_string_append_printf(outstr, " " #name "locc%d=%d", l->name##cc_number, l->name##locc); \
 863     if (l->has_##name##hicc) \
 864         g_string_append_printf(outstr, " " #name "hicc%d=%d", l->name##cc_number, l->name##hicc);
 865
 866 gchar *sampler_layer_to_string(struct sampler_layer *lr, gboolean show_inherited)
 867 {
 868     struct sampler_layer_data *l = &lr->data;
 869     GString *outstr = g_string_sized_new(200);
 870     const char *tmpstr;
 871     char floatbuf[G_ASCII_DTOSTR_BUF_SIZE];
 872     int floatbufsize = G_ASCII_DTOSTR_BUF_SIZE;
 873     SAMPLER_FIXED_FIELDS(PROC_FIELDS_TO_FILEPTR)
 874
 875     static const char *addrandom_variants[] = { "amp", "fil", "pitch" };
 876     static const char *modsrc_names[] = { "chanaft", "vel", "polyaft", "pitch", "pitcheg", "fileg", "ampeg", "pitchlfo", "fillfo", "amplfo", "" };
 877     static const char *moddest_names[] = { "gain", "pitch", "cutoff", "resonance" };
 878     for(GSList *nif = l->nifs; nif; nif = nif->next)
 879     {
 880         struct sampler_noteinitfunc *nd = nif->data;
 881         if (!nd->has_value && !show_inherited)
 882             continue;
 883         #define PROC_ENVSTAGE_NAME(name, index, def_value) #name,
 884         static const char *env_stages[] = { DAHDSR_FIELDS(PROC_ENVSTAGE_NAME) };
 885         int v = nd->variant;
 886         g_ascii_dtostr(floatbuf, floatbufsize, nd->param);
 887
 888         if (nd->notefunc == sampler_nif_addrandom && v >= 0 && v <= 2)
 889             g_string_append_printf(outstr, " %s_random=%s", addrandom_variants[nd->variant], floatbuf);
 890         else if (nd->notefunc == sampler_nif_vel2pitch)
 891             g_string_append_printf(outstr, " pitch_veltrack=%s", floatbuf);
 892         else if (nd->notefunc == sampler_nif_cc2delay && v >= 0 && v < 120)
 893             g_string_append_printf(outstr, " delay_cc%d=%s", nd->variant, floatbuf);
 894         else if (nd->notefunc == sampler_nif_vel2env && v >= 0 && (v & 15) < 6 && (v >> 4) < 3)
 895             g_string_append_printf(outstr, " %seg_vel2%s=%s", addrandom_variants[nd->variant >> 4], env_stages[1 + (v & 15)], floatbuf);
 896     }
 897     for(GSList *mod = l->modulations; mod; mod = mod->next)
 898     {
 899         struct sampler_modulation *md = mod->data;
 900         if (!md->has_value && !show_inherited)
 901             continue;
 902         g_ascii_dtostr(floatbuf, floatbufsize, md->amount);
 903
 904         if (md->src2 == smsrc_none)
 905         {
 906             if (md->src < 120)
 907             {
 908                 g_string_append_printf(outstr, " %s_cc%d=%s", moddest_names[md->dest], md->src, floatbuf);
 909                 continue;
 910             }
 911             if (md->src < 120 + sizeof(modsrc_names) / sizeof(modsrc_names[0]))
 912             {
 913                 if ((md->src == smsrc_filenv && md->dest == smdest_cutoff) ||
 914                     (md->src == smsrc_pitchenv && md->dest == smdest_pitch))
 915                     g_string_append_printf(outstr, " %s_depth=%s", modsrc_names[md->src - 120], floatbuf);
 916                 else
 917                     g_string_append_printf(outstr, " %s_%s=%s", moddest_names[md->dest], modsrc_names[md->src - 120], floatbuf);
 918                 continue;
 919             }
 920         }
 921         if ((md->src == smsrc_amplfo && md->dest == smdest_gain) ||
 922             (md->src == smsrc_fillfo && md->dest == smdest_cutoff) ||
 923             (md->src == smsrc_pitchlfo && md->dest == smdest_pitch))
 924         {
 925             switch(md->src2)
 926             {
 927             case smsrc_chanaft:
 928             case smsrc_polyaft:
 929                 g_string_append_printf(outstr, " %slfo_depth%s=%s", moddest_names[md->dest], modsrc_names[md->src2 - 120], floatbuf);
 930                 continue;
 931             default:
 932                 if (md->src2 < 120)
 933                 {
 934                     g_string_append_printf(outstr, " %slfo_depthcc%d=%s", moddest_names[md->dest], md->src2, floatbuf);
 935                     continue;
 936                 }
 937                 break;
 938             }
 939             break;
 940         }
 941         if ((md->src == smsrc_ampenv && md->dest == smdest_gain) ||
 942             (md->src == smsrc_filenv && md->dest == smdest_cutoff) ||
 943             (md->src == smsrc_pitchenv && md->dest == smdest_pitch))
 944         {
 945             if (md->src2 == smsrc_vel)
 946             {
 947                 g_string_append_printf(outstr, " %seg_vel2depth=%s", moddest_names[md->dest], floatbuf);
 948                 continue;
 949             }
 950             if (md->src2 < 120)
 951             {
 952                 g_string_append_printf(outstr, " %s_depthcc%d=%s", modsrc_names[md->src - 120], md->src2, floatbuf);
 953                 continue;
 954             }
 955         }
 956         g_string_append_printf(outstr, " genericmod_from_%d_and_%d_to_%d=%s", md->src, md->src2, md->dest, floatbuf);
 957     }
 958
 959     if (lr->unknown_keys)
 960     {
 961         GHashTableIter hti;
 962         gchar *key, *value;
 963         g_hash_table_iter_init(&hti, lr->unknown_keys);
 964         while(g_hash_table_iter_next(&hti, (gpointer *)&key, (gpointer *)&value))
 965             g_string_append_printf(outstr, " %s=%s", key, value);
 966     }
 967
 968     gchar *res = outstr->str;
 969     g_string_free(outstr, FALSE);
 970     return res;
 971 }
 972
 973 void sampler_layer_dump(struct sampler_layer *l, FILE *f)
 974 {
 975     gchar *str = sampler_layer_to_string(l, FALSE);
 976     fprintf(f, "%s\n", str);
 977 }
 978
 979 void sampler_layer_data_close(struct sampler_layer_data *l)
 980 {
 981     g_slist_free_full(l->nifs, g_free);
 982     g_slist_free_full(l->modulations, g_free);
 983     if (l->eff_waveform)
 984     {
 985         cbox_waveform_unref(l->eff_waveform);
 986         l->eff_waveform = NULL;
 987     }
 988     g_free(l->sample);
 989 }
 990
 991 void sampler_layer_data_destroy(struct sampler_layer_data *l)
 992 {
 993     sampler_layer_data_close(l);
 994     free(l);
 995 }
 996
 997 void sampler_layer_destroyfunc(struct cbox_objhdr *objhdr)
 998 {
 999     struct sampler_layer *l = CBOX_H2O(objhdr);
1000     struct sampler_program *prg = l->parent_program;
1001     assert(g_hash_table_size(l->child_layers) == 0);
1002
1003     if (l->parent_group)
1004     {
1005         g_hash_table_remove(l->parent_group->child_layers, l);
1006         if (prg && prg->rll)
1007         {
1008             sampler_program_delete_layer(prg, l);
1009             sampler_program_update_layers(l->parent_program);
1010         }
1011         l->parent_group = NULL;
1012     }
1013     sampler_layer_data_close(&l->data);
1014     if (l->runtime)
1015         sampler_layer_data_destroy(l->runtime);
1016     if (l->unknown_keys)
1017         g_hash_table_destroy(l->unknown_keys);
1018     if (l->child_layers)
1019         g_hash_table_destroy(l->child_layers);
1020
1021     free(l);
1022 }
1023
1024 //////////////////////////////////////////////////////////////////////////
1025
1026 struct sampler_layer_update_cmd
1027 {
1028     struct sampler_module *module;
1029     struct sampler_layer *layer;
1030     struct sampler_layer_data *new_data;
1031     struct sampler_layer_data *old_data;
1032 };
1033
1034 static int sampler_layer_update_cmd_prepare(void *data)
1035 {
1036     struct sampler_layer_update_cmd *cmd = data;
1037     cmd->old_data = cmd->layer->runtime;
1038     cmd->new_data = calloc(1, sizeof(struct sampler_layer_data));
1039
1040     sampler_layer_data_clone(cmd->new_data, &cmd->layer->data, TRUE);
1041     sampler_layer_data_finalize(cmd->new_data, cmd->layer->parent_group ? &cmd->layer->parent_group->data : NULL, cmd->layer->parent_program);
1042     if (cmd->layer->runtime == NULL)
1043     {
1044         // initial update of the layer, so none of the voices need updating yet
1045         // because the layer hasn't been allocated to any voice
1046         cmd->layer->runtime = cmd->new_data;
1047         return 1;
1048     }
1049     return 0;
1050 }
1051
1052 static int sampler_layer_update_cmd_execute(void *data)
1053 {
1054     struct sampler_layer_update_cmd *cmd = data;
1055
1056     for (int i = 0; i < 16; i++)
1057     {
1058         FOREACH_VOICE(cmd->module->channels[i].voices_running, v)
1059         {
1060             if (v->layer == cmd->old_data)
1061                 v->layer = cmd->new_data;
1062         }
1063     }
1064     cmd->layer->runtime = cmd->new_data;
1065     return 10;
1066 }
1067
1068 static void sampler_layer_update_cmd_cleanup(void *data)
1069 {
1070     struct sampler_layer_update_cmd *cmd = data;
1071
1072     sampler_layer_data_destroy(cmd->old_data);
1073 }
1074
1075 void sampler_layer_update(struct sampler_layer *l)
1076 {
1077     // if changing a group, update all child regions instead
1078     if (g_hash_table_size(l->child_layers))
1079     {
1080         GHashTableIter iter;
1081         g_hash_table_iter_init(&iter, l->child_layers);
1082         gpointer key, value;
1083         while(g_hash_table_iter_next(&iter, &key, &value))
1084         {
1085             sampler_layer_data_finalize(&((struct sampler_layer *)key)->data, &l->data, l->parent_program);
1086             sampler_layer_update((struct sampler_layer *)key);
1087         }
1088         return;
1089     }
1090     static struct cbox_rt_cmd_definition rtcmd = {
1091         .prepare = sampler_layer_update_cmd_prepare,
1092         .execute = sampler_layer_update_cmd_execute,
1093         .cleanup = sampler_layer_update_cmd_cleanup,
1094     };
1095
1096     struct sampler_layer_update_cmd lcmd;
1097     lcmd.module = l->module;
1098     lcmd.layer = l;
1099     lcmd.new_data = NULL;
1100     lcmd.old_data = NULL;
1101
1102     // In order to be able to use the async call, it would be necessary to
1103     // identify old data by layer pointer, not layer data pointer. For now,
1104     // it might be good enough to just use sync calls for this.
1105     cbox_rt_execute_cmd_sync(l->module->module.rt, &rtcmd, &lcmd);
1106 }
1107