src/backend.h

   1 /*
   2    Epichord - a midi sequencer
   3    Copyright (C) 2008  Evan Rinehart
   4
   5    This program is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU General Public License
   7    as published by the Free Software Foundation; either version 2
   8    of the License, or (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, write to
  17
  18    The Free Software Foundation, Inc.
  19    51 Franklin Street, Fifth Floor
  20    Boston, MA  02110-1301, USA
  21 */
  22
  23 #ifndef backend_h
  24 #define backend_h
  25
  26 #include <inttypes.h>
  27
  28 #define TICKS_PER_BEAT 128
  29
  30 int init_backend(int* argc, char*** argv);
  31 int shutdown_backend();
  32 int start_backend();
  33 int pause_backend();
  34
  35
  36 void dispatch_event(mevent* e, int track, int tick_base);
  37
  38
  39 int reset_backend(int tick);
  40 void toggle_backend_recording();
  41
  42 int is_backend_playing();
  43 int is_backend_recording();
  44
  45 void set_loop_start(int tick);
  46 void set_loop_end(int tick);
  47 int get_loop_start();
  48 int get_loop_end();
  49 void toggle_loop();
  50
  51 void set_solo(int s);
  52 int get_solo();
  53
  54 void backend_set_passthru(int v);
  55
  56 void set_bpm(int new_bpm);
  57
  58 int get_play_position();
  59
  60 void send_midi(char* raw, uint16_t n, uint8_t p);
  61 void send_midi_local(char* raw, uint16_t n);
  62 int recv_midi(int* chan, int* tick, int* type, int* val1, int* val2);
  63 const char* getsysexbuf();
  64 void all_notes_off();
  65
  66 void program_change(int track, int prog);
  67 void midi_bank_controller(int track, int bank);
  68 void midi_volume_controller(int track, int vol);
  69 void midi_pan_controller(int track, int pan);
  70 void midi_expression_controller(int track, int expr);
  71
  72 void midi_note_off(int note, int chan, int port);
  73 void midi_channel_off(int chan, int port);
  74 void midi_track_off(int track);
  75
  76
  77
  78 enum {SESSION_NOMORE,SESSION_LOAD,SESSION_SAVE,SESSION_QUIT,SESSION_UNHANDLED};
  79 int backend_session_process();
  80 char* get_session_string();
  81
  82 #endif
  83