mdw@git.distorted.org.uk Git - disorder/blob - disobedience/disobedience.c

   1 /*
   2  * This file is part of DisOrder.
   3  * Copyright (C) 2006, 2007 Richard Kettlewell
   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 2 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, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * 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 the Free Software
  17  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  18  * USA
  19  */
  20 /** @file disobedience/disobedience.c
  21  * @brief Main Disobedience program
  22  */
  23
  24 #include "disobedience.h"
  25
  26 #include <getopt.h>
  27 #include <locale.h>
  28 #include <pcre.h>
  29
  30 /* Apologies for the numerous de-consting casts, but GLib et al do not seem to
  31  * have heard of const. */
  32
  33 #include "style.h"                      /* generated style */
  34
  35 /* Variables --------------------------------------------------------------- */
  36
  37 /** @brief Event loop */
  38 GMainLoop *mainloop;
  39
  40 /** @brief Top-level window */
  41 GtkWidget *toplevel;
  42
  43 /** @brief Label for progress indicator */
  44 GtkWidget *report_label;
  45
  46 /** @brief Main tab group */
  47 GtkWidget *tabs;
  48
  49 /** @brief Main client */
  50 disorder_eclient *client;
  51
  52 /** @brief Last reported state
  53  *
  54  * This is updated by log_state().
  55  */
  56 unsigned long last_state;
  57
  58 /** @brief True if some track is playing
  59  *
  60  * This ought to be removed in favour of last_state & DISORDER_PLAYING
  61  */
  62 int playing;
  63
  64 /** @brief Left channel volume */
  65 int volume_l;
  66
  67 /** @brief Right channel volume */
  68 int volume_r;
  69
  70 double goesupto = 10;                   /* volume upper bound */
  71
  72 /** @brief Break up choose tab by initial letter */
  73 int choosealpha;
  74
  75 /** @brief True if a NOP is in flight */
  76 static int nop_in_flight;
  77
  78 /* Window creation --------------------------------------------------------- */
  79
  80 /* Note that all the client operations kicked off from here will only complete
  81  * after we've entered the event loop. */
  82
  83 /** @brief Called when main window is deleted
  84  *
  85  * Terminates the program.
  86  */
  87 static gboolean delete_event(GtkWidget attribute((unused)) *widget,
  88                              GdkEvent attribute((unused)) *event,
  89                              gpointer attribute((unused)) data) {
  90   D(("delete_event"));
  91   exit(0);                              /* die immediately */
  92 }
  93
  94 /** @brief Called when the current tab is switched
  95  *
  96  * Updates the menu settings to correspond to the new page.
  97  */
  98 static void tab_switched(GtkNotebook attribute((unused)) *notebook,
  99                          GtkNotebookPage attribute((unused)) *page,
 100                          guint page_num,
 101                          gpointer attribute((unused)) user_data) {
 102   menu_update(page_num);
 103 }
 104
 105 /** @brief Create the report box */
 106 static GtkWidget *report_box(void) {
 107   GtkWidget *vbox = gtk_vbox_new(FALSE, 0);
 108
 109   report_label = gtk_label_new("");
 110   gtk_label_set_ellipsize(GTK_LABEL(report_label), PANGO_ELLIPSIZE_END);
 111   gtk_misc_set_alignment(GTK_MISC(report_label), 0, 0);
 112   gtk_container_add(GTK_CONTAINER(vbox), gtk_hseparator_new());
 113   gtk_container_add(GTK_CONTAINER(vbox), report_label);
 114   return vbox;
 115 }
 116
 117 /** @brief Create and populate the main tab group */
 118 static GtkWidget *notebook(void) {
 119   tabs = gtk_notebook_new();
 120   g_signal_connect(tabs, "switch-page", G_CALLBACK(tab_switched), 0);
 121   gtk_notebook_append_page(GTK_NOTEBOOK(tabs), queue_widget(),
 122                            gtk_label_new("Queue"));
 123   gtk_notebook_append_page(GTK_NOTEBOOK(tabs), recent_widget(),
 124                            gtk_label_new("Recent"));
 125   gtk_notebook_append_page(GTK_NOTEBOOK(tabs), choose_widget(),
 126                            gtk_label_new("Choose"));
 127   return tabs;
 128 }
 129
 130 /** @brief Create and populate the main window */
 131 static void make_toplevel_window(void) {
 132   GtkWidget *const vbox = gtk_vbox_new(FALSE, 1);
 133   GtkWidget *const rb = report_box();
 134
 135   D(("top_window"));
 136   toplevel = gtk_window_new(GTK_WINDOW_TOPLEVEL);
 137   /* default size is too small */
 138   gtk_window_set_default_size(GTK_WINDOW(toplevel), 640, 480);
 139   /* terminate on close */
 140   g_signal_connect(G_OBJECT(toplevel), "delete_event",
 141                    G_CALLBACK(delete_event), NULL);
 142   /* lay out the window */
 143   gtk_window_set_title(GTK_WINDOW(toplevel), "Disobedience");
 144   gtk_container_add(GTK_CONTAINER(toplevel), vbox);
 145   /* lay out the vbox */
 146   gtk_box_pack_start(GTK_BOX(vbox),
 147                      menubar(toplevel),
 148                      FALSE,             /* expand */
 149                      FALSE,             /* fill */
 150                      0);
 151   gtk_box_pack_start(GTK_BOX(vbox),
 152                      control_widget(),
 153                      FALSE,             /* expand */
 154                      FALSE,             /* fill */
 155                      0);
 156   gtk_container_add(GTK_CONTAINER(vbox), notebook());
 157   gtk_box_pack_end(GTK_BOX(vbox),
 158                    rb,
 159                    FALSE,             /* expand */
 160                    FALSE,             /* fill */
 161                    0);
 162   gtk_widget_set_name(toplevel, "disobedience");
 163 }
 164
 165 #if MDEBUG
 166 static int widget_count, container_count;
 167
 168 static void count_callback(GtkWidget *w,
 169                            gpointer attribute((unused)) data) {
 170   ++widget_count;
 171   if(GTK_IS_CONTAINER(w)) {
 172     ++container_count;
 173     gtk_container_foreach(GTK_CONTAINER(w), count_callback, 0);
 174   }
 175 }
 176
 177 static void count_widgets(void) {
 178   widget_count = 0;
 179   container_count = 1;
 180   if(toplevel)
 181     gtk_container_foreach(GTK_CONTAINER(toplevel), count_callback, 0);
 182   fprintf(stderr, "widget count: %8d  container count: %8d\n",
 183           widget_count, container_count);
 184 }
 185 #endif
 186
 187 #if MTRACK
 188 const char *mtag = "init";
 189 static hash *mtrack_hash;
 190
 191 static int *mthfind(const char *tag) {
 192   static const int zero = 0;
 193   int *cp = hash_find(mtrack_hash, tag);
 194   if(!cp) {
 195     hash_add(mtrack_hash, tag, &zero, HASH_INSERT);
 196     cp = hash_find(mtrack_hash, tag);
 197   }
 198   return cp;
 199 }
 200
 201 static void *trap_malloc(size_t n) {
 202   void *ptr = malloc(n + sizeof(char *));
 203
 204   *(const char **)ptr = mtag;
 205   ++*mthfind(mtag);
 206   return (char *)ptr + sizeof(char *);
 207 }
 208
 209 static void trap_free(void *ptr) {
 210   const char *tag;
 211   if(!ptr)
 212     return;
 213   ptr = (char *)ptr - sizeof(char *);
 214   tag = *(const char **)ptr;
 215   --*mthfind(tag);
 216   free(ptr);
 217 }
 218
 219 static void *trap_realloc(void *ptr, size_t n) {
 220   if(!ptr)
 221     return trap_malloc(n);
 222   if(!n) {
 223     trap_free(ptr);
 224     return 0;
 225   }
 226   ptr = (char *)ptr - sizeof(char *);
 227   ptr = realloc(ptr, n + sizeof(char *));
 228   *(const char **)ptr = mtag;
 229   return (char *)ptr + sizeof(char *);
 230 }
 231
 232 static int report_tags_callback(const char *key, void *value,
 233                                 void attribute((unused)) *u) {
 234   fprintf(stderr, "%16s: %d\n", key, *(int *)value);
 235   return 0;
 236 }
 237
 238 static void report_tags(void) {
 239   hash_foreach(mtrack_hash, report_tags_callback, 0);
 240   fprintf(stderr, "\n");
 241 }
 242
 243 static const GMemVTable glib_memvtable = {
 244   trap_malloc,
 245   trap_realloc,
 246   trap_free,
 247   0,
 248   0,
 249   0
 250 };
 251 #endif
 252
 253 /** @brief Called once every 10 minutes */
 254 static gboolean periodic(gpointer attribute((unused)) data) {
 255   D(("periodic"));
 256   /* Expire cached data */
 257   cache_expire();
 258   /* Update everything to be sure that the connection to the server hasn't
 259    * mysteriously gone stale on us. */
 260   all_update();
 261 #if MDEBUG
 262   count_widgets();
 263   fprintf(stderr, "cache size: %zu\n", cache_count());
 264 #endif
 265 #if MTRACK
 266   report_tags();
 267 #endif
 268   return TRUE;                          /* don't remove me */
 269 }
 270
 271 /** @brief Called from time to time
 272  *
 273  * Used for debugging purposes
 274  */
 275 static gboolean heartbeat(gpointer attribute((unused)) data) {
 276   static struct timeval last;
 277   struct timeval now;
 278   double delta;
 279
 280   xgettimeofday(&now, 0);
 281   if(last.tv_sec) {
 282     delta = (now.tv_sec + now.tv_sec / 1.0E6)
 283       - (last.tv_sec + last.tv_sec / 1.0E6);
 284     if(delta >= 1.0625)
 285       fprintf(stderr, "%f: %fs between 1s heartbeats\n",
 286               now.tv_sec + now.tv_sec / 1.0E6,
 287               delta);
 288   }
 289   last = now;
 290   return TRUE;
 291 }
 292
 293 /** @brief Called when a NOP completes */
 294 static void nop_completed(void attribute((unused)) *v) {
 295   nop_in_flight = 0;
 296 }
 297
 298 /** @brief Called from time to time to arrange for a NOP to be sent
 299  *
 300  * At most one NOP remains in flight at any moment.  If the client is not
 301  * currently connected then no NOP is sent.
 302  */
 303 static gboolean maybe_send_nop(gpointer attribute((unused)) data) {
 304   if(!nop_in_flight && (disorder_eclient_state(client) & DISORDER_CONNECTED)) {
 305     nop_in_flight = 1;
 306     disorder_eclient_nop(client, nop_completed, 0);
 307   }
 308   return TRUE;                          /* keep call me please */
 309 }
 310
 311 /* main -------------------------------------------------------------------- */
 312
 313 static const struct option options[] = {
 314   { "help", no_argument, 0, 'h' },
 315   { "version", no_argument, 0, 'V' },
 316   { "config", required_argument, 0, 'c' },
 317   { "tufnel", no_argument, 0, 't' },
 318   { "choosealpha", no_argument, 0, 'C' },
 319   { "debug", no_argument, 0, 'd' },
 320   { 0, 0, 0, 0 }
 321 };
 322
 323 /* display usage message and terminate */
 324 static void help(void) {
 325   xprintf("Disobedience - GUI client for DisOrder\n"
 326           "\n"
 327           "Usage:\n"
 328           "  disobedience [OPTIONS]\n"
 329           "Options:\n"
 330           "  --help, -h              Display usage message\n"
 331           "  --version, -V           Display version number\n"
 332           "  --config PATH, -c PATH  Set configuration file\n"
 333           "  --debug, -d             Turn on debugging\n"
 334           "\n"
 335           "Also GTK+ options will work.\n");
 336   xfclose(stdout);
 337   exit(0);
 338 }
 339
 340 /* display version number and terminate */
 341 static void version(void) {
 342   xprintf("disorder version %s\n", disorder_version_string);
 343   xfclose(stdout);
 344   exit(0);
 345 }
 346
 347 int main(int argc, char **argv) {
 348   int n;
 349   disorder_eclient *logclient;
 350
 351   mem_init();
 352   /* garbage-collect PCRE's memory */
 353   pcre_malloc = xmalloc;
 354   pcre_free = xfree;
 355 #if MTRACK
 356   mtrack_hash = hash_new(sizeof (int));
 357   g_mem_set_vtable((GMemVTable *)&glib_memvtable);
 358 #endif
 359   if(!setlocale(LC_CTYPE, "")) fatal(errno, "error calling setlocale");
 360   gtk_init(&argc, &argv);
 361   gtk_rc_parse_string(style);
 362   while((n = getopt_long(argc, argv, "hVc:dtH", options, 0)) >= 0) {
 363     switch(n) {
 364     case 'h': help();
 365     case 'V': version();
 366     case 'c': configfile = optarg; break;
 367     case 'd': debugging = 1; break;
 368     case 't': goesupto = 11; break;
 369     case 'C': choosealpha = 1; break;   /* not well tested any more */
 370     default: fatal(0, "invalid option");
 371     }
 372   }
 373   signal(SIGPIPE, SIG_IGN);
 374   /* create the event loop */
 375   D(("create main loop"));
 376   mainloop = g_main_loop_new(0, 0);
 377   if(config_read()) fatal(0, "cannot read configuration");
 378   /* create the clients */
 379   if(!(client = gtkclient())
 380      || !(logclient = gtkclient()))
 381     return 1;                           /* already reported an error */
 382   /* periodic operations (e.g. expiring the cache) */
 383 #if MDEBUG || MTRACK
 384   g_timeout_add(5000/*milliseconds*/, periodic, 0);
 385 #else
 386   g_timeout_add(600000/*milliseconds*/, periodic, 0);
 387 #endif
 388   /* The point of this is to try and get a handle on mysterious
 389    * unresponsiveness.  It's not very useful in production use. */
 390   if(0)
 391     g_timeout_add(1000/*milliseconds*/, heartbeat, 0);
 392   make_toplevel_window();
 393   /* reset styles now everything has its name */
 394   gtk_rc_reset_styles(gtk_settings_get_for_screen(gdk_screen_get_default()));
 395   gtk_widget_show_all(toplevel);
 396   /* issue a NOP every so often */
 397   g_timeout_add_full(G_PRIORITY_LOW,
 398                      1000/*interval, ms*/,
 399                      maybe_send_nop,
 400                      0/*data*/,
 401                      0/*notify*/);
 402   /* Start monitoring the log */
 403   disorder_eclient_log(logclient, &log_callbacks, 0);
 404   D(("enter main loop"));
 405   MTAG("misc");
 406   g_main_loop_run(mainloop);
 407   return 0;
 408 }
 409
 410 /*
 411 Local Variables:
 412 c-basic-offset:2
 413 comment-column:40
 414 fill-column:79
 415 indent-tabs-mode:nil
 416 End:
 417 */