cinelerra-5.1/cinelerra/lv2ui.C

   1 #include <stdio.h>
   2
   3 #include <gtk/gtk.h>
   4 #include <gdk/gdk.h>
   5
   6 #include "bcsignals.h"
   7 #include "pluginlv2client.h"
   8 #include "pluginlv2gui.h"
   9
  10 static void lilv_destroy(GtkWidget* widget, gpointer data)
  11 {
  12         PluginLV2GUI *the = (PluginLV2GUI*)data;
  13         the->done = 1;
  14 }
  15
  16 void PluginLV2GUI::start()
  17 {
  18         GtkWidget *window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
  19         g_signal_connect(window, "destroy", G_CALLBACK(lilv_destroy), this);
  20         gtk_window_set_title(GTK_WINDOW(window), title);
  21
  22         GtkWidget *vbox = gtk_vbox_new(FALSE, 0);
  23         gtk_window_set_role(GTK_WINDOW(window), "plugin_ui");
  24         gtk_container_add(GTK_CONTAINER(window), vbox);
  25
  26         GtkWidget *alignment = gtk_alignment_new(0.5, 0.5, 1.0, 1.0);
  27         gtk_box_pack_start(GTK_BOX(vbox), alignment, TRUE, TRUE, 0);
  28         gtk_widget_show(alignment);
  29         lv2ui_instantiate(alignment);
  30         GtkWidget* widget = (GtkWidget*)suil_instance_get_widget(sinst);
  31         gtk_container_add(GTK_CONTAINER(alignment), widget);
  32         gtk_window_set_resizable(GTK_WINDOW(window), lv2ui_resizable());
  33         gtk_widget_show_all(vbox);
  34         gtk_widget_grab_focus(widget);
  35
  36         gtk_window_present(GTK_WINDOW(window));
  37         running = -1;
  38 }
  39
  40 void PluginLV2GUI::stop()
  41 {
  42         running = 0;
  43 }
  44
  45 void PluginLV2GUI::host_update(PluginLV2ChildGUI *child)
  46 {
  47 //printf("update\n");
  48         last = updates;
  49         if( !child ) return;
  50 // ignore reset update
  51         if( child->lv2_gui->running < 0 ) { child->lv2_gui->running = 1;  return; }
  52         child->send_parent(LV2_UPDATE, config.ctls, sizeof(float)*config.nb_ports);
  53 }
  54
  55 void PluginLV2GUI::run_gui(PluginLV2ChildGUI *child)
  56 {
  57         while( !done ) {
  58                 if( gtk_events_pending() ) {
  59                         gtk_main_iteration();
  60                         continue;
  61                 }
  62                 if( running && updates != last )
  63                         host_update(child);
  64                 if( redraw ) {
  65                         redraw = 0;
  66                         update_lv2(config.ctls, 1);
  67                 }
  68                 if( !child ) usleep(10000);
  69                 else if( child->child_iteration() < 0 )
  70                         done = 1;
  71         }
  72 }
  73
  74 int PluginLV2ChildGUI::handle_child()
  75 {
  76         if( !lv2_gui ) return 0;
  77
  78         switch( child_token ) {
  79         case LV2_OPEN: {
  80                 char *path = (char *)child_data;
  81                 if( lv2_gui->init_gui(path) ) exit(1);
  82                 break; }
  83         case LV2_LOAD: {
  84                 lv2_gui->update_lv2((float*)child_data, 1);
  85                 break; }
  86         case LV2_UPDATE: {
  87                 lv2_gui->update_lv2((float*)child_data, 0);
  88                 break; }
  89         case LV2_START: {
  90                 lv2_gui->start();
  91                 break; }
  92         case LV2_SET: {
  93                 if( !lv2_gui ) break;
  94                 control_t *bfr = (control_t *)child_data;
  95                 lv2_gui->config.ctls[bfr->idx] = bfr->value;
  96                 lv2_gui->redraw = 1;
  97                 break; }
  98         case EXIT_CODE:
  99                 return -1;
 100         default:
 101                 return 0;
 102         }
 103         return 1;
 104 }
 105
 106 int PluginLV2GUI::run(int ac, char **av)
 107 {
 108         if( ac < 3 ) {
 109                 if( init_gui(av[1]) ) {
 110                         fprintf(stderr," init_ui failed\n");
 111                         return 1;
 112                 }
 113                 start();
 114                 run_gui();
 115                 stop();
 116         }
 117         else {
 118                 PluginLV2ChildGUI child;
 119                 child.lv2_gui = this;
 120                 child.child_fd = atoi(av[1]);
 121                 child.parent_fd = atoi(av[2]);
 122                 run_gui(&child);
 123                 stop();
 124                 child.lv2_gui = 0;
 125         }
 126         return 0;
 127 }
 128
 129 int main(int ac, char **av)
 130 {
 131         BC_Signals signals;
 132         if( getenv("BC_TRAP_LV2_SEGV") ) {
 133                 signals.initialize("/tmp/lv2ui_%d.dmp");
 134                 BC_Signals::set_catch_segv(1);
 135         }
 136         gtk_set_locale();
 137         gtk_init(&ac, &av);
 138 // to grab this task in the debugger
 139 //static int zbug = 1;  volatile int bug = zbug;
 140 //while( bug ) usleep(10000);
 141         return PluginLV2GUI().run(ac, av);
 142 }
 143