mididest.h

   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 #ifndef CBOX_MIDIDEST_H
  20 #define CBOX_MIDIDEST_H
  21
  22 #include "midi.h"
  23 #include <glib.h>
  24
  25 struct cbox_command_target;
  26 struct cbox_rt;
  27
  28 struct cbox_midi_source
  29 {
  30     struct cbox_midi_buffer *data;
  31     int bpos;
  32     gboolean streaming;
  33 };
  34
  35 struct cbox_midi_merger
  36 {
  37     struct cbox_midi_source **inputs;
  38     int input_count;
  39     struct cbox_midi_buffer *output;
  40 };
  41
  42 void cbox_midi_merger_init(struct cbox_midi_merger *dest, struct cbox_midi_buffer *output);
  43 void cbox_midi_merger_render_to(struct cbox_midi_merger *dest, struct cbox_midi_buffer *output);
  44 static inline void cbox_midi_merger_render(struct cbox_midi_merger *dest)
  45 {
  46     if (dest->output)
  47         cbox_midi_merger_render_to(dest, dest->output);
  48 }
  49 int cbox_midi_merger_find_source(struct cbox_midi_merger *dest, struct cbox_midi_buffer *buffer);
  50 void cbox_midi_merger_connect(struct cbox_midi_merger *dest, struct cbox_midi_buffer *buffer, struct cbox_rt *rt);
  51 void cbox_midi_merger_disconnect(struct cbox_midi_merger *dest, struct cbox_midi_buffer *buffer, struct cbox_rt *rt);
  52 void cbox_midi_merger_push(struct cbox_midi_merger *dest, struct cbox_midi_buffer *buffer, struct cbox_rt *rt);
  53 void cbox_midi_merger_close(struct cbox_midi_merger *dest);
  54
  55 #define GET_RT_FROM_cbox_midi_appsink(appsink) ((appsink)->rt)
  56
  57 struct cbox_midi_appsink
  58 {
  59     struct cbox_rt *rt;
  60     struct cbox_midi_buffer midibufs[2];
  61     int current_buffer;
  62 };
  63
  64 extern void cbox_midi_appsink_init(struct cbox_midi_appsink *appsink, struct cbox_rt *rt);
  65 extern void cbox_midi_appsink_supply(struct cbox_midi_appsink *appsink, struct cbox_midi_buffer *buffer);
  66 extern const struct cbox_midi_buffer *cbox_midi_appsink_get_input_midi_data(struct cbox_midi_appsink *appsink);
  67 extern gboolean cbox_midi_appsink_send_to(struct cbox_midi_appsink *appsink, struct cbox_command_target *fb, GError **error);
  68
  69 #endif