seq-adhoc.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 "master.h"
  20 #include "seq.h"
  21
  22 struct cbox_adhoc_pattern *cbox_adhoc_pattern_new(struct cbox_engine *engine, int id, struct cbox_midi_pattern *pattern)
  23 {
  24     struct cbox_adhoc_pattern *ap = calloc(1, sizeof(struct cbox_adhoc_pattern));
  25     ap->next = NULL;
  26     ap->pattern = pattern;
  27     ap->pattern_playback = cbox_midi_pattern_playback_new(pattern);
  28     ap->master = cbox_master_new(engine);
  29     cbox_midi_playback_active_notes_init(&ap->active_notes);
  30     cbox_midi_clip_playback_init(&ap->playback, &ap->active_notes, ap->master);
  31     cbox_midi_buffer_init(&ap->output_buffer);
  32     ap->id = id;
  33     ap->completed = FALSE;
  34
  35     return ap;
  36 }
  37
  38 void cbox_adhoc_pattern_render(struct cbox_adhoc_pattern *ap, int offset, int nsamples)
  39 {
  40     if (ap->completed)
  41     {
  42         cbox_midi_playback_active_notes_release(&ap->active_notes, &ap->output_buffer);
  43         return;
  44     }
  45     if (ap->playback.pos >= ap->playback.pattern->event_count)
  46         ap->completed = TRUE;
  47     cbox_midi_clip_playback_render(&ap->playback, &ap->output_buffer, offset, nsamples);
  48 }
  49
  50 void cbox_adhoc_pattern_destroy(struct cbox_adhoc_pattern *ap)
  51 {
  52     // XXXKF decide on pattern ownership and general object lifetime issues
  53     cbox_midi_pattern_playback_destroy(ap->playback.pattern);
  54     cbox_master_destroy(ap->master);
  55     free(ap);
  56 }