master.h

   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 #ifndef CBOX_MASTER_H
  20 #define CBOX_MASTER_H
  21
  22 #include <stdint.h>
  23 #include "cmd.h"
  24
  25 #define PPQN 48
  26
  27 struct cbox_song;
  28 struct cbox_rt;
  29
  30 enum cbox_master_transport_state
  31 {
  32     CMTS_STOP,
  33     CMTS_ROLLING,
  34     CMTS_STOPPING,
  35 };
  36
  37 struct cbox_master
  38 {
  39     int srate;
  40     float tempo, new_tempo;
  41     int timesig_nom;
  42     int timesig_denom; // must be 4 for now
  43     enum cbox_master_transport_state state;
  44     struct cbox_rt *rt;
  45     struct cbox_song *song;
  46     struct cbox_song_playback *spb;
  47     struct cbox_command_target cmd_target;
  48 };
  49
  50 struct cbox_bbt
  51 {
  52     int bar;
  53     int beat;
  54     int tick;
  55 };
  56
  57 extern struct cbox_master *cbox_master_new(struct cbox_rt *rt);
  58 extern void cbox_master_set_sample_rate(struct cbox_master *master, int srate);
  59 extern void cbox_master_set_tempo(struct cbox_master *master, float tempo);
  60 extern void cbox_master_set_timesig(struct cbox_master *master, int beats, int unit);
  61 //extern void cbox_master_to_bbt(const struct cbox_master *master, struct cbox_bbt *bbt, int time_samples);
  62 //extern uint32_t cbox_master_song_pos_from_bbt(struct cbox_master *master, const struct cbox_bbt *bbt);
  63 extern void cbox_master_play(struct cbox_master *master);
  64 extern void cbox_master_stop(struct cbox_master *master);
  65 extern void cbox_master_panic(struct cbox_master *master);
  66 extern void cbox_master_seek_ppqn(struct cbox_master *master, uint32_t pos_ppqn);
  67 extern void cbox_master_seek_samples(struct cbox_master *master, uint32_t pos_samples);
  68 extern void cbox_master_destroy(struct cbox_master *master);
  69
  70 int cbox_master_ppqn_to_samples(struct cbox_master *master, int time_ppqn);
  71 int cbox_master_samples_to_ppqn(struct cbox_master *master, int time_samples);
  72
  73 #endif