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 extern uint64_t PPQN;
  26
  27 struct cbox_song;
  28 struct cbox_rt;
  29
  30 #define GET_RT_FROM_cbox_master(ptr) ((ptr)->engine->rt)
  31
  32 enum cbox_master_transport_state
  33 {
  34     CMTS_STOP,
  35     CMTS_ROLLING,
  36     CMTS_STOPPING,
  37 };
  38
  39 struct cbox_master
  40 {
  41     int srate;
  42     float tempo, new_tempo;
  43     int timesig_nom;
  44     int timesig_denom; // must be 4 for now
  45     uint64_t ppqn_factor;
  46     enum cbox_master_transport_state state;
  47     struct cbox_engine *engine;
  48     struct cbox_song *song;
  49     struct cbox_song_playback *spb;
  50     struct cbox_command_target cmd_target;
  51 };
  52
  53 struct cbox_bbt
  54 {
  55     int bar;
  56     int beat;
  57     int tick;
  58 };
  59
  60 extern struct cbox_master *cbox_master_new(struct cbox_engine *engine);
  61 extern void cbox_master_set_sample_rate(struct cbox_master *master, int srate);
  62 extern void cbox_master_set_tempo(struct cbox_master *master, float tempo);
  63 extern void cbox_master_set_timesig(struct cbox_master *master, int beats, int unit);
  64 //extern void cbox_master_to_bbt(const struct cbox_master *master, struct cbox_bbt *bbt, int time_samples);
  65 //extern uint32_t cbox_master_song_pos_from_bbt(struct cbox_master *master, const struct cbox_bbt *bbt);
  66 extern void cbox_master_play(struct cbox_master *master);
  67 extern void cbox_master_stop(struct cbox_master *master);
  68 extern void cbox_master_panic(struct cbox_master *master);
  69 extern void cbox_master_seek_ppqn(struct cbox_master *master, uint32_t pos_ppqn);
  70 extern void cbox_master_seek_samples(struct cbox_master *master, uint32_t pos_samples);
  71 extern void cbox_master_destroy(struct cbox_master *master);
  72
  73 int cbox_master_ppqn_to_samples(struct cbox_master *master, int time_ppqn);
  74 int cbox_master_samples_to_ppqn(struct cbox_master *master, int time_samples);
  75
  76 #endif