research.m1stereo.tv/gitweb/ - melted/blob - src/modules/jackrack/ui.c

   1 /*
   2  *   JACK Rack
   3  *
   4  *   Copyright (C) Robert Ham 2002, 2003 (node@users.sourceforge.net)
   5  *
   6  *   This program is free software; you can redistribute it and/or modify
   7  *   it under the terms of the GNU General Public License as published by
   8  *   the Free Software Foundation; either version 2 of the License, or
   9  *   (at your option) any later version.
  10  *
  11  *   This program is distributed in the hope that it will be useful,
  12  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *   GNU General Public License for more details.
  15  *
  16  *   You should have received a copy of the GNU General Public License
  17  *   along with this program; if not, write to the Free Software
  18  *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  19  */
  20
  21 #include <stdio.h>
  22 #include <stdlib.h>
  23 #include <strings.h>
  24 #include <string.h>
  25 #include <ctype.h>
  26 #include <limits.h>
  27 #include <stdarg.h>
  28 #include <unistd.h>
  29
  30 #include <glib.h>
  31 #include <ladspa.h>
  32
  33 #include "ui.h"
  34 #include "control_message.h"
  35
  36
  37 #define PROCESS_FIFO_SIZE 64
  38 #define MIDI_FIFO_SIZE 256
  39
  40 ui_t *
  41 ui_new (const char * client_name, unsigned long channels,
  42         gboolean connect_inputs, gboolean connect_outputs)
  43 {
  44   ui_t * ui;
  45
  46   ui = g_malloc (sizeof (ui_t));
  47   ui->filename = NULL;
  48   ui->shutdown = FALSE;
  49   ui->state = STATE_NORMAL;
  50
  51   ui->ui_to_process = lff_new (PROCESS_FIFO_SIZE, sizeof (ctrlmsg_t));
  52   ui->process_to_ui = lff_new (PROCESS_FIFO_SIZE, sizeof (ctrlmsg_t));
  53
  54   ui->procinfo = process_info_new (ui, client_name, channels, connect_inputs, connect_outputs);
  55   if (!ui->procinfo)
  56     return NULL;
  57
  58   ui->plugin_mgr = plugin_mgr_new (ui);
  59   plugin_mgr_set_plugins (ui->plugin_mgr, channels);
  60   ui->jack_rack = jack_rack_new (ui, channels);
  61
  62   return ui;
  63 }
  64
  65
  66 void
  67 ui_quit (ui_t * ui)
  68 {
  69   ctrlmsg_t ctrlmsg;
  70
  71   ui_set_state (ui, STATE_QUITTING);
  72   ctrlmsg.type = CTRLMSG_QUIT;
  73   lff_write (ui->ui_to_process, &ctrlmsg);
  74 }
  75
  76 void
  77 ui_destroy (ui_t * ui)
  78 {
  79   if (!ui->shutdown)
  80     ui_quit (ui);
  81   jack_rack_destroy (ui->jack_rack);
  82
  83   g_free (ui);
  84 }
  85
  86 void
  87 ui_set_state    (ui_t * ui, ui_state_t state)
  88 {
  89   ui->state = state;
  90 }
  91
  92 ui_state_t
  93 ui_get_state (ui_t * ui)
  94 {
  95   return ui->state;
  96 }
  97
  98 void
  99 jack_shutdown_cb (void * data)
 100 {
 101   ui_t * ui = data;
 102
 103   ui->shutdown = TRUE;
 104 }
 105
 106 /* do the process->gui message processing */
 107 gboolean
 108 ui_loop_iterate (ui_t * ui)
 109 {
 110   ctrlmsg_t ctrlmsg;
 111   jack_rack_t * jack_rack = ui->jack_rack;
 112
 113   while (lff_read (ui->process_to_ui, &ctrlmsg) == 0)
 114     {
 115     switch (ctrlmsg.type)
 116       {
 117       case CTRLMSG_ADD:
 118         jack_rack_add_plugin (jack_rack, ctrlmsg.data.add.plugin);
 119         break;
 120
 121       case CTRLMSG_REMOVE:
 122         plugin_destroy (ctrlmsg.data.remove.plugin, ui);
 123         break;
 124
 125       case CTRLMSG_QUIT:
 126         return TRUE;
 127         break;
 128
 129       }
 130     }
 131
 132   usleep (100000);
 133
 134   return FALSE;
 135 }
 136
 137 /* EOF */