sampler_prg.c

   1 /*
   2 Calf Box, an open source musical instrument.
   3 Copyright (C) 2010-2013 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 "sampler.h"
  20 #include "sampler_prg.h"
  21 #include "sfzloader.h"
  22
  23 #include <assert.h>
  24
  25 CBOX_CLASS_DEFINITION_ROOT(sampler_program)
  26
  27 GSList *sampler_program_get_next_layer(struct sampler_program *prg, struct sampler_channel *c, GSList *next_layer, int note, int vel, float random)
  28 {
  29     int ch = (c - c->module->channels) + 1;
  30     for(;next_layer;next_layer = g_slist_next(next_layer))
  31     {
  32         struct sampler_layer *lr = next_layer->data;
  33         struct sampler_layer_data *l = &lr->data;
  34         if (!l->waveform)
  35             continue;
  36         if (l->sw_last != -1)
  37         {
  38             if (note >= l->sw_lokey && note <= l->sw_hikey)
  39                 lr->last_key = note;
  40         }
  41         if (note >= l->lokey && note <= l->hikey && vel >= l->lovel && vel <= l->hivel && ch >= l->lochan && ch <= l->hichan && random >= l->lorand && random < l->hirand)
  42         {
  43             if (!l->eff_use_keyswitch ||
  44                 ((l->sw_last == -1 || l->sw_last == lr->last_key) &&
  45                  (l->sw_down == -1 || (c->switchmask[l->sw_down >> 5] & (1 << (l->sw_down & 31)))) &&
  46                  (l->sw_up == -1 || !(c->switchmask[l->sw_up >> 5] & (1 << (l->sw_up & 31)))) &&
  47                  (l->sw_previous == -1 || l->sw_previous == c->previous_note)))
  48             {
  49                 gboolean play = lr->current_seq_position == 1;
  50                 lr->current_seq_position++;
  51                 if (lr->current_seq_position >= l->seq_length)
  52                     lr->current_seq_position = 1;
  53                 if (play)
  54                     return next_layer;
  55             }
  56         }
  57     }
  58     return NULL;
  59 }
  60
  61 static gboolean return_layers(GSList *layers, const char *keyword, struct cbox_command_target *fb, GError **error)
  62 {
  63     for (GSList *p = layers; p; p = g_slist_next(p))
  64     {
  65         if (!cbox_execute_on(fb, NULL, keyword, "o", error, p->data))
  66             return FALSE;
  67     }
  68     return TRUE;
  69 }
  70
  71 static gboolean sampler_program_process_cmd(struct cbox_command_target *ct, struct cbox_command_target *fb, struct cbox_osc_command *cmd, GError **error)
  72 {
  73     struct sampler_program *program = ct->user_data;
  74     if (!strcmp(cmd->command, "/status") && !strcmp(cmd->arg_types, ""))
  75     {
  76         if (!cbox_check_fb_channel(fb, cmd->command, error))
  77             return FALSE;
  78
  79         if (!(CBOX_OBJECT_DEFAULT_STATUS(program, fb, error)))
  80             return FALSE;
  81         return TRUE;
  82     }
  83     if (!strcmp(cmd->command, "/regions") && !strcmp(cmd->arg_types, ""))
  84     {
  85         if (!cbox_check_fb_channel(fb, cmd->command, error))
  86             return FALSE;
  87         return return_layers(program->all_layers, "/region", fb, error);
  88     }
  89     if (!strcmp(cmd->command, "/groups") && !strcmp(cmd->arg_types, ""))
  90     {
  91         if (!cbox_execute_on(fb, NULL, "/default_group", "o", error, program->default_group))
  92             return FALSE;
  93         if (!cbox_check_fb_channel(fb, cmd->command, error))
  94             return FALSE;
  95         return return_layers(program->groups, "/group", fb, error);
  96     }
  97     if (!strcmp(cmd->command, "/new_group") && !strcmp(cmd->arg_types, ""))
  98     {
  99         struct sampler_layer *l = sampler_layer_new(program->module, program, NULL);
 100         sampler_program_add_group(program, l);
 101         return cbox_execute_on(fb, NULL, "/uuid", "o", error, l);
 102     }
 103     return cbox_object_default_process_cmd(ct, fb, cmd, error);
 104
 105 }
 106
 107 struct sampler_program *sampler_program_new(struct sampler_module *m, int prog_no, const char *name, const char *sample_dir)
 108 {
 109     struct cbox_document *doc = CBOX_GET_DOCUMENT(&m->module);
 110     struct sampler_program *prg = malloc(sizeof(struct sampler_program));
 111     memset(prg, 0, sizeof(*prg));
 112     CBOX_OBJECT_HEADER_INIT(prg, sampler_program, doc);
 113     cbox_command_target_init(&prg->cmd_target, sampler_program_process_cmd, prg);
 114
 115     prg->module = m;
 116     prg->prog_no = prog_no;
 117     prg->name = g_strdup(name);
 118     prg->sample_dir = g_strdup(sample_dir);
 119     prg->source_file = NULL;
 120     prg->all_layers = NULL;
 121     prg->rll = NULL;
 122     prg->groups = NULL;
 123     prg->default_group = sampler_layer_new(m, prg, NULL);
 124     prg->deleting = FALSE;
 125     CBOX_OBJECT_REGISTER(prg);
 126     return prg;
 127 }
 128
 129 struct sampler_program *sampler_program_new_from_cfg(struct sampler_module *m, const char *cfg_section, const char *name, int pgm_id, GError **error)
 130 {
 131     int i;
 132
 133     char *name2 = NULL, *sfz_path = NULL, *spath = NULL;
 134     const char *sfz = NULL;
 135
 136     g_clear_error(error);
 137     if (!strncmp(cfg_section, "spgm:!", 6))
 138     {
 139         sfz = cfg_section + 6;
 140         name2 = strrchr(name, '/');
 141         if (name2)
 142             name2++;
 143     }
 144     else
 145     {
 146         if (!sfz && !cbox_config_has_section(cfg_section))
 147         {
 148             g_set_error(error, CBOX_MODULE_ERROR, CBOX_MODULE_ERROR_FAILED, "Cannot load sampler program '%s' from section '%s': section not found", name, cfg_section);
 149             return FALSE;
 150         }
 151         name2 = cbox_config_get_string(cfg_section, "name");
 152
 153         sfz_path = cbox_config_get_string(cfg_section, "sfz_path");
 154         spath = cbox_config_get_string(cfg_section, "sample_path");
 155         sfz = cbox_config_get_string(cfg_section, "sfz");
 156     }
 157
 158     if (sfz && !sfz_path && !spath)
 159     {
 160         char *lastslash = strrchr(sfz, '/');
 161         if (lastslash && !sfz_path && !spath)
 162         {
 163             char *tmp = g_strndup(sfz, lastslash - sfz);
 164             sfz_path = cbox_config_permify(tmp);
 165             g_free(tmp);
 166             sfz = lastslash + 1;
 167         }
 168     }
 169
 170     struct sampler_program *prg = sampler_program_new(
 171         m,
 172         pgm_id != -1 ? pgm_id : cbox_config_get_int(cfg_section, "program", 0),
 173         name2 ? name2 : name,
 174         spath ? spath : (sfz_path ? sfz_path : "")
 175     );
 176
 177     if (sfz)
 178     {
 179         if (sfz_path)
 180             prg->source_file = g_build_filename(sfz_path, sfz, NULL);
 181         else
 182         {
 183             prg->source_file = g_strdup(sfz);
 184         }
 185
 186         if (sampler_module_load_program_sfz(m, prg, prg->source_file, FALSE, error))
 187             return prg;
 188         CBOX_DELETE(prg);
 189         return NULL;
 190     }
 191
 192     for (i = 0; ; i++)
 193     {
 194         char *where = NULL;
 195         gchar *s = g_strdup_printf("layer%d", 1 + i);
 196         const char *layer_section = cbox_config_get_string(cfg_section, s);
 197         g_free(s);
 198         if (!layer_section)
 199             break;
 200         where = g_strdup_printf("slayer:%s", layer_section);
 201
 202         prg->source_file = g_strdup_printf("config:%s", cfg_section);
 203         struct sampler_layer *l = sampler_layer_new_from_section(m, prg, where);
 204         sampler_update_layer(m, l);
 205         if (!l)
 206             g_warning("Sample layer '%s' cannot be created - skipping", layer_section);
 207         else if (!l->data.waveform)
 208             g_warning("Sample layer '%s' does not have a waveform - skipping", layer_section);
 209         else
 210             sampler_program_add_layer(prg, l);
 211         g_free(where);
 212     }
 213     prg->all_layers = g_slist_reverse(prg->all_layers);
 214     sampler_update_program_layers(m, prg);
 215     return prg;
 216 }
 217
 218 void sampler_program_add_layer(struct sampler_program *prg, struct sampler_layer *l)
 219 {
 220     // Always call sampler_update_layer before sampler_program_add_layer.
 221     assert(l->runtime);
 222     prg->all_layers = g_slist_prepend(prg->all_layers, l);
 223 }
 224
 225 void sampler_program_delete_layer(struct sampler_program *prg, struct sampler_layer *l)
 226 {
 227     prg->all_layers = g_slist_remove(prg->all_layers, l);
 228 }
 229
 230
 231 void sampler_program_add_group(struct sampler_program *prg, struct sampler_layer *l)
 232 {
 233     prg->groups = g_slist_prepend(prg->groups, l);
 234 }
 235
 236 void sampler_program_destroyfunc(struct cbox_objhdr *hdr_ptr)
 237 {
 238     struct sampler_program *prg = CBOX_H2O(hdr_ptr);
 239     sampler_unselect_program(prg->module, prg);
 240     if (prg->rll)
 241     {
 242         sampler_rll_destroy(prg->rll);
 243         prg->rll = NULL;
 244     }
 245     for (GSList *p = prg->all_layers; p; p = g_slist_next(p))
 246         CBOX_DELETE((struct sampler_layer *)p->data);
 247     for (GSList *p = prg->groups; p; p = g_slist_next(p))
 248         CBOX_DELETE((struct sampler_layer *)p->data);
 249     CBOX_DELETE(prg->default_group);
 250
 251     g_free(prg->name);
 252     g_free(prg->sample_dir);
 253     g_free(prg->source_file);
 254     g_slist_free(prg->all_layers);
 255     free(prg);
 256 }
 257
 258 /////////////////////////////////////////////////////////////////////////////////
 259
 260 struct sampler_rll *sampler_rll_new_from_program(struct sampler_program *prg)
 261 {
 262     struct sampler_rll *rll = malloc(sizeof(struct sampler_rll));
 263     rll->layers = NULL;
 264     rll->layers_release = NULL;
 265
 266     for (GSList *p = prg->all_layers; p; p = g_slist_next(p))
 267     {
 268         struct sampler_layer *l = p->data;
 269         if (l->data.trigger == stm_release)
 270             rll->layers_release = g_slist_prepend(rll->layers_release, l);
 271         else
 272             rll->layers = g_slist_prepend(rll->layers, l);
 273     }
 274     return rll;
 275 }
 276
 277 void sampler_rll_destroy(struct sampler_rll *rll)
 278 {
 279     g_slist_free(rll->layers);
 280     g_slist_free(rll->layers_release);
 281     free(rll);
 282 }