io.h

   1 /*
   2 Calf Box, an open source musical instrument.
   3 Copyright (C) 2010 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_IO_H
  20 #define CBOX_IO_H
  21
  22 #include <glib.h>
  23 #include <jack/jack.h>
  24 #include <jack/ringbuffer.h>
  25 #include "dom.h"
  26 #include "master.h"
  27 #include "mididest.h"
  28
  29 struct cbox_io;
  30 struct cbox_io_callbacks;
  31 struct cbox_recording_source;
  32 struct cbox_meter;
  33 struct cbox_midi_buffer;
  34 struct cbox_scene;
  35
  36 struct cbox_open_params
  37 {
  38 };
  39
  40 struct cbox_io_impl
  41 {
  42     struct cbox_io *pio;
  43
  44     int (*getsampleratefunc)(struct cbox_io_impl *ioi);
  45     gboolean (*startfunc)(struct cbox_io_impl *ioi, struct cbox_command_target *fb, GError **error);
  46     gboolean (*stopfunc)(struct cbox_io_impl *ioi, GError **error);
  47     gboolean (*cyclefunc)(struct cbox_io_impl *ioi, struct cbox_command_target *fb, GError **error);
  48     gboolean (*getstatusfunc)(struct cbox_io_impl *ioi, GError **error);
  49     void (*pollfunc)(struct cbox_io_impl *ioi, struct cbox_command_target *fb);
  50     int (*getmidifunc)(struct cbox_io_impl *ioi, struct cbox_midi_buffer *destination);
  51     struct cbox_midi_output *(*createmidioutfunc)(struct cbox_io_impl *ioi, const char *name, GError **error);
  52     void (*destroymidioutfunc)(struct cbox_io_impl *ioi, struct cbox_midi_output *midiout);
  53     struct cbox_midi_input *(*createmidiinfunc)(struct cbox_io_impl *ioi, const char *name, GError **error);
  54     void (*destroymidiinfunc)(struct cbox_io_impl *ioi, struct cbox_midi_input *midiout);
  55     void (*destroyfunc)(struct cbox_io_impl *ioi);
  56 };
  57
  58 struct cbox_io
  59 {
  60     struct cbox_io_impl *impl;
  61     struct cbox_command_target cmd_target;
  62
  63     int input_count;
  64     float **input_buffers; // only valid inside jack_rt_process
  65     int output_count;
  66     float **output_buffers; // only valid inside jack_rt_process
  67     int buffer_size;
  68
  69     struct cbox_io_callbacks *cb;
  70     GSList *midi_inputs;
  71     GSList *midi_outputs;
  72 };
  73
  74 struct cbox_io_callbacks
  75 {
  76     void *user_data;
  77
  78     void (*process)(void *user_data, struct cbox_io *io, uint32_t nframes);
  79     void (*on_disconnected)(void *user_data);
  80     void (*on_reconnected)(void *user_data);
  81     void (*on_midi_inputs_changed)(void *user_data);
  82     void (*on_midi_outputs_changed)(void *user_data);
  83 };
  84
  85 struct cbox_midi_input
  86 {
  87     gchar *name;
  88     struct cbox_uuid uuid;
  89     struct cbox_midi_buffer buffer;
  90     gboolean removing;
  91 };
  92
  93 struct cbox_midi_output
  94 {
  95     gchar *name;
  96     struct cbox_uuid uuid;
  97     struct cbox_midi_buffer buffer;
  98     struct cbox_midi_merger merger;
  99     // This is set if the output is in process of being removed and should not
 100     // be used for output.
 101     gboolean removing;
 102 };
 103
 104 extern gboolean cbox_io_init(struct cbox_io *io, struct cbox_open_params *const params, struct cbox_command_target *fb, GError **error);
 105 extern gboolean cbox_io_init_jack(struct cbox_io *io, struct cbox_open_params *const params, struct cbox_command_target *fb, GError **error);
 106 extern gboolean cbox_io_init_usb(struct cbox_io *io, struct cbox_open_params *const params, struct cbox_command_target *fb, GError **error);
 107
 108 extern int cbox_io_start(struct cbox_io *io, struct cbox_io_callbacks *cb, struct cbox_command_target *fb);
 109 extern int cbox_io_stop(struct cbox_io *io);
 110 extern int cbox_io_get_sample_rate(struct cbox_io *io);
 111 static inline int cbox_io_get_buffer_size(struct cbox_io *io)
 112 {
 113     return io->buffer_size;
 114 }
 115 extern int cbox_io_get_midi_data(struct cbox_io *io, struct cbox_midi_buffer *destination);
 116 extern gboolean cbox_io_get_disconnect_status(struct cbox_io *io, GError **error);
 117 extern gboolean cbox_io_cycle(struct cbox_io *io, struct cbox_command_target *fb, GError **error);
 118 extern void cbox_io_poll_ports(struct cbox_io *io, struct cbox_command_target *fb);
 119 extern struct cbox_midi_input *cbox_io_get_midi_input(struct cbox_io *io, const char *name, const struct cbox_uuid *uuid);
 120 extern struct cbox_midi_output *cbox_io_get_midi_output(struct cbox_io *io, const char *name, const struct cbox_uuid *uuid);
 121 extern struct cbox_midi_output *cbox_io_create_midi_output(struct cbox_io *io, const char *name, GError **error);
 122 extern void cbox_io_destroy_midi_output(struct cbox_io *io, struct cbox_midi_output *midiout);
 123 extern struct cbox_midi_input *cbox_io_create_midi_input(struct cbox_io *io, const char *name, GError **error);
 124 extern void cbox_io_destroy_midi_input(struct cbox_io *io, struct cbox_midi_input *midiin);
 125 extern void cbox_io_destroy_all_midi_ports(struct cbox_io *io);
 126 extern gboolean cbox_io_process_cmd(struct cbox_io *io, struct cbox_command_target *fb, struct cbox_osc_command *cmd, GError **error, gboolean *cmd_handled);
 127 extern void cbox_io_close(struct cbox_io *io);
 128
 129 extern const char *cbox_io_section;
 130
 131 #endif