| 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/control.c |
| 21 | * @brief Volume control and buttons |
| 22 | */ |
| 23 | |
| 24 | #include "disobedience.h" |
| 25 | #include "mixer.h" |
| 26 | |
| 27 | /* Forward declarations ---------------------------------------------------- */ |
| 28 | |
| 29 | WT(adjustment); |
| 30 | WT(hscale); |
| 31 | WT(hbox); |
| 32 | WT(button); |
| 33 | WT(image); |
| 34 | WT(label); |
| 35 | WT(vbox); |
| 36 | |
| 37 | struct icon; |
| 38 | |
| 39 | static void update_pause(const struct icon *); |
| 40 | static void update_play(const struct icon *); |
| 41 | static void update_scratch(const struct icon *); |
| 42 | static void update_random_enable(const struct icon *); |
| 43 | static void update_random_disable(const struct icon *); |
| 44 | static void update_enable(const struct icon *); |
| 45 | static void update_disable(const struct icon *); |
| 46 | static void update_rtp(const struct icon *); |
| 47 | static void update_nortp(const struct icon *); |
| 48 | static void clicked_icon(GtkButton *, gpointer); |
| 49 | static void clicked_menu(GtkMenuItem *, gpointer userdata); |
| 50 | static void toggled_menu(GtkCheckMenuItem *, gpointer userdata); |
| 51 | |
| 52 | static int enable_rtp(disorder_eclient *c, |
| 53 | disorder_eclient_no_response *completed, |
| 54 | void *v); |
| 55 | static int disable_rtp(disorder_eclient *c, |
| 56 | disorder_eclient_no_response *completed, |
| 57 | void *v); |
| 58 | |
| 59 | static double left(double v, double b); |
| 60 | static double right(double v, double b); |
| 61 | static double volume(double l, double r); |
| 62 | static double balance(double l, double r); |
| 63 | |
| 64 | static void volume_adjusted(GtkAdjustment *a, gpointer user_data); |
| 65 | static gchar *format_volume(GtkScale *scale, gdouble value); |
| 66 | static gchar *format_balance(GtkScale *scale, gdouble value); |
| 67 | |
| 68 | /* Control bar ------------------------------------------------------------- */ |
| 69 | |
| 70 | /** @brief Guard against feedback */ |
| 71 | int suppress_actions = 1; |
| 72 | |
| 73 | /** @brief Definition of an icon |
| 74 | * |
| 75 | * The design here is rather mad: rather than changing the image displayed by |
| 76 | * icons according to their state, we flip the visibility of pairs of icons. |
| 77 | */ |
| 78 | struct icon { |
| 79 | /** @brief Filename for image */ |
| 80 | const char *icon; |
| 81 | |
| 82 | /** @brief Text for tooltip */ |
| 83 | const char *tip; |
| 84 | |
| 85 | /** @brief Associated menu item or NULL */ |
| 86 | const char *menuitem; |
| 87 | |
| 88 | /** @brief Called to update button when state may have changed */ |
| 89 | void (*update)(const struct icon *i); |
| 90 | |
| 91 | /** @brief @ref eclient.h function to call */ |
| 92 | int (*action)(disorder_eclient *c, |
| 93 | disorder_eclient_no_response *completed, |
| 94 | void *v); |
| 95 | |
| 96 | /** @brief Flag */ |
| 97 | unsigned flags; |
| 98 | |
| 99 | /** @brief Pointer to button */ |
| 100 | GtkWidget *button; |
| 101 | |
| 102 | /** @brief Pointer to menu item */ |
| 103 | GtkWidget *item; |
| 104 | }; |
| 105 | |
| 106 | /** @brief This is the active half of a pair */ |
| 107 | #define ICON_ACTIVE 0x0001 |
| 108 | |
| 109 | /** @brief This is the inactive half of a pair */ |
| 110 | #define ICON_INACTIVE 0x0002 |
| 111 | |
| 112 | /** @brief Table of all icons */ |
| 113 | static struct icon icons[] = { |
| 114 | { |
| 115 | "pause.png", /* icon */ |
| 116 | "Pause playing track", /* tip */ |
| 117 | "<GdisorderMain>/Control/Playing", /* menuitem */ |
| 118 | update_pause, /* update */ |
| 119 | disorder_eclient_pause, /* action */ |
| 120 | ICON_ACTIVE, /* flags */ |
| 121 | 0, /* button */ |
| 122 | 0 /* item */ |
| 123 | }, |
| 124 | { |
| 125 | "play.png", /* icon */ |
| 126 | "Resume playing track", /* tip */ |
| 127 | "<GdisorderMain>/Control/Playing", /* menuitem */ |
| 128 | update_play, /* update */ |
| 129 | disorder_eclient_resume, /* action */ |
| 130 | ICON_INACTIVE, /* flags */ |
| 131 | 0, /* button */ |
| 132 | 0 /* item */ |
| 133 | }, |
| 134 | { |
| 135 | "cross.png", /* icon */ |
| 136 | "Cancel playing track", /* tip */ |
| 137 | "<GdisorderMain>/Control/Scratch", /* menuitem */ |
| 138 | update_scratch, /* update */ |
| 139 | disorder_eclient_scratch_playing, /* action */ |
| 140 | 0, /* flags */ |
| 141 | 0, /* button */ |
| 142 | 0 /* item */ |
| 143 | }, |
| 144 | { |
| 145 | "random.png", /* icon */ |
| 146 | "Enable random play", /* tip */ |
| 147 | "<GdisorderMain>/Control/Random play", /* menuitem */ |
| 148 | update_random_enable, /* update */ |
| 149 | disorder_eclient_random_enable, /* action */ |
| 150 | ICON_INACTIVE, /* flags */ |
| 151 | 0, /* button */ |
| 152 | 0 /* item */ |
| 153 | }, |
| 154 | { |
| 155 | "randomcross.png", /* icon */ |
| 156 | "Disable random play", /* tip */ |
| 157 | "<GdisorderMain>/Control/Random play", /* menuitem */ |
| 158 | update_random_disable, /* update */ |
| 159 | disorder_eclient_random_disable, /* action */ |
| 160 | ICON_ACTIVE, /* flags */ |
| 161 | 0, /* button */ |
| 162 | 0 /* item */ |
| 163 | }, |
| 164 | { |
| 165 | "notes.png", /* icon */ |
| 166 | "Enable play", /* tip */ |
| 167 | 0, /* menuitem */ |
| 168 | update_enable, /* update */ |
| 169 | disorder_eclient_enable, /* action */ |
| 170 | ICON_INACTIVE, /* flags */ |
| 171 | 0, /* button */ |
| 172 | 0 /* item */ |
| 173 | }, |
| 174 | { |
| 175 | "notescross.png", /* icon */ |
| 176 | "Disable play", /* tip */ |
| 177 | 0, /* menuitem */ |
| 178 | update_disable, /* update */ |
| 179 | disorder_eclient_disable, /* action */ |
| 180 | ICON_ACTIVE, /* flags */ |
| 181 | 0, /* button */ |
| 182 | 0 /* item */ |
| 183 | }, |
| 184 | { |
| 185 | "speaker.png", /* icon */ |
| 186 | "Play network stream", /* tip */ |
| 187 | "<GdisorderMain>/Control/Network player", /* menuitem */ |
| 188 | update_rtp, /* update */ |
| 189 | enable_rtp, /* action */ |
| 190 | ICON_INACTIVE, /* flags */ |
| 191 | 0, /* button */ |
| 192 | 0 /* item */ |
| 193 | }, |
| 194 | { |
| 195 | "speakercross.png", /* icon */ |
| 196 | "Stop playing network stream", /* tip */ |
| 197 | "<GdisorderMain>/Control/Network player", /* menuitem */ |
| 198 | update_nortp, /* update */ |
| 199 | disable_rtp, /* action */ |
| 200 | ICON_ACTIVE, /* flags */ |
| 201 | 0, /* button */ |
| 202 | 0 /* item */ |
| 203 | }, |
| 204 | }; |
| 205 | |
| 206 | /** @brief Count of icons */ |
| 207 | #define NICONS (int)(sizeof icons / sizeof *icons) |
| 208 | |
| 209 | static GtkAdjustment *volume_adj; |
| 210 | static GtkAdjustment *balance_adj; |
| 211 | |
| 212 | /** @brief Called whenever last_state changes in any way */ |
| 213 | void control_monitor(void attribute((unused)) *u) { |
| 214 | int n; |
| 215 | |
| 216 | D(("control_monitor")); |
| 217 | for(n = 0; n < NICONS; ++n) |
| 218 | icons[n].update(&icons[n]); |
| 219 | } |
| 220 | |
| 221 | /** @brief Create the control bar */ |
| 222 | GtkWidget *control_widget(void) { |
| 223 | GtkWidget *hbox = gtk_hbox_new(FALSE, 1), *vbox; |
| 224 | GtkWidget *v, *b; |
| 225 | int n; |
| 226 | |
| 227 | NW(hbox); |
| 228 | D(("control_widget")); |
| 229 | assert(mainmenufactory); /* ordering must be right */ |
| 230 | for(n = 0; n < NICONS; ++n) { |
| 231 | NW(button); |
| 232 | icons[n].button = iconbutton(icons[n].icon, icons[n].tip); |
| 233 | g_signal_connect(G_OBJECT(icons[n].button), "clicked", |
| 234 | G_CALLBACK(clicked_icon), &icons[n]); |
| 235 | /* pop the icon in a vbox so it doesn't get vertically stretch if there are |
| 236 | * taller things in the control bar */ |
| 237 | NW(vbox); |
| 238 | vbox = gtk_vbox_new(FALSE, 0); |
| 239 | gtk_box_pack_start(GTK_BOX(vbox), icons[n].button, TRUE, FALSE, 0); |
| 240 | gtk_box_pack_start(GTK_BOX(hbox), vbox, FALSE, FALSE, 0); |
| 241 | if(icons[n].menuitem) { |
| 242 | icons[n].item = gtk_item_factory_get_widget(mainmenufactory, |
| 243 | icons[n].menuitem); |
| 244 | switch(icons[n].flags & (ICON_ACTIVE|ICON_INACTIVE)) { |
| 245 | case ICON_ACTIVE: |
| 246 | g_signal_connect(G_OBJECT(icons[n].item), "toggled", |
| 247 | G_CALLBACK(toggled_menu), &icons[n]); |
| 248 | break; |
| 249 | case ICON_INACTIVE: |
| 250 | /* Don't connect two instances of the signal! */ |
| 251 | break; |
| 252 | default: |
| 253 | g_signal_connect(G_OBJECT(icons[n].item), "activate", |
| 254 | G_CALLBACK(clicked_menu), &icons[n]); |
| 255 | break; |
| 256 | } |
| 257 | } |
| 258 | } |
| 259 | /* create the adjustments for the volume control */ |
| 260 | NW(adjustment); |
| 261 | volume_adj = GTK_ADJUSTMENT(gtk_adjustment_new(0, 0, goesupto, |
| 262 | goesupto / 20, goesupto / 20, |
| 263 | 0)); |
| 264 | NW(adjustment); |
| 265 | balance_adj = GTK_ADJUSTMENT(gtk_adjustment_new(0, -1, 1, |
| 266 | 0.2, 0.2, 0)); |
| 267 | /* the volume control */ |
| 268 | NW(hscale); |
| 269 | v = gtk_hscale_new(volume_adj); |
| 270 | NW(hscale); |
| 271 | b = gtk_hscale_new(balance_adj); |
| 272 | gtk_widget_set_style(v, tool_style); |
| 273 | gtk_widget_set_style(b, tool_style); |
| 274 | gtk_scale_set_digits(GTK_SCALE(v), 10); |
| 275 | gtk_scale_set_digits(GTK_SCALE(b), 10); |
| 276 | gtk_widget_set_size_request(v, 192, -1); |
| 277 | gtk_widget_set_size_request(b, 192, -1); |
| 278 | gtk_tooltips_set_tip(tips, v, "Volume", ""); |
| 279 | gtk_tooltips_set_tip(tips, b, "Balance", ""); |
| 280 | gtk_box_pack_start(GTK_BOX(hbox), v, FALSE, TRUE, 0); |
| 281 | gtk_box_pack_start(GTK_BOX(hbox), b, FALSE, TRUE, 0); |
| 282 | /* space updates rather than hammering the server */ |
| 283 | gtk_range_set_update_policy(GTK_RANGE(v), GTK_UPDATE_DELAYED); |
| 284 | gtk_range_set_update_policy(GTK_RANGE(b), GTK_UPDATE_DELAYED); |
| 285 | /* notice when the adjustments are changed */ |
| 286 | g_signal_connect(G_OBJECT(volume_adj), "value-changed", |
| 287 | G_CALLBACK(volume_adjusted), 0); |
| 288 | g_signal_connect(G_OBJECT(balance_adj), "value-changed", |
| 289 | G_CALLBACK(volume_adjusted), 0); |
| 290 | /* format the volume/balance values ourselves */ |
| 291 | g_signal_connect(G_OBJECT(v), "format-value", |
| 292 | G_CALLBACK(format_volume), 0); |
| 293 | g_signal_connect(G_OBJECT(b), "format-value", |
| 294 | G_CALLBACK(format_balance), 0); |
| 295 | register_monitor(control_monitor, 0, -1UL); |
| 296 | return hbox; |
| 297 | } |
| 298 | |
| 299 | /** @brief Update the volume control when it changes */ |
| 300 | void volume_update(void) { |
| 301 | double l, r; |
| 302 | |
| 303 | D(("volume_update")); |
| 304 | l = volume_l / 100.0; |
| 305 | r = volume_r / 100.0; |
| 306 | ++suppress_actions; |
| 307 | gtk_adjustment_set_value(volume_adj, volume(l, r) * goesupto); |
| 308 | gtk_adjustment_set_value(balance_adj, balance(l, r)); |
| 309 | --suppress_actions; |
| 310 | } |
| 311 | |
| 312 | /** @brief Update the state of one of the control icons |
| 313 | * @param icon Target icon |
| 314 | * @param visible True if this version of the button should be visible |
| 315 | * @param usable True if the button is currently usable |
| 316 | * |
| 317 | * Several of the icons, rather bizarrely, come in pairs: for instance exactly |
| 318 | * one of the play and pause buttons is supposed to be visible at any given |
| 319 | * moment. |
| 320 | * |
| 321 | * @p usable need not take into account server availability, that is done |
| 322 | * automatically. |
| 323 | */ |
| 324 | static void update_icon(const struct icon *icon, |
| 325 | int visible, int usable) { |
| 326 | /* If the connection is down nothing is ever usable */ |
| 327 | if(!(last_state & DISORDER_CONNECTED)) |
| 328 | usable = 0; |
| 329 | (visible ? gtk_widget_show : gtk_widget_hide)(icon->button); |
| 330 | /* Only both updating usability if the button is visible */ |
| 331 | if(visible) |
| 332 | gtk_widget_set_sensitive(icon->button, usable); |
| 333 | if(icon->item) { |
| 334 | /* There's an associated menu item. These are always visible, but may not |
| 335 | * be usable. */ |
| 336 | if((icon->flags & (ICON_ACTIVE|ICON_INACTIVE)) == ICON_ACTIVE) { |
| 337 | /* The active half of a pair */ |
| 338 | gtk_check_menu_item_set_active(GTK_CHECK_MENU_ITEM(icon->item), visible); |
| 339 | } |
| 340 | gtk_widget_set_sensitive(icon->item, usable); |
| 341 | } |
| 342 | } |
| 343 | |
| 344 | static void update_pause(const struct icon *icon) { |
| 345 | const int visible = !(last_state & DISORDER_TRACK_PAUSED); |
| 346 | const int usable = !!(last_state & DISORDER_PLAYING); /* TODO: might be a lie */ |
| 347 | update_icon(icon, visible, usable); |
| 348 | } |
| 349 | |
| 350 | static void update_play(const struct icon *icon) { |
| 351 | const int visible = !!(last_state & DISORDER_TRACK_PAUSED); |
| 352 | const int usable = !!(last_state & DISORDER_PLAYING); |
| 353 | update_icon(icon, visible, usable); |
| 354 | } |
| 355 | |
| 356 | static void update_scratch(const struct icon *icon) { |
| 357 | const int visible = 1; |
| 358 | const int usable = !!(last_state & DISORDER_PLAYING); |
| 359 | update_icon(icon, visible, usable); |
| 360 | } |
| 361 | |
| 362 | static void update_random_enable(const struct icon *icon) { |
| 363 | const int visible = !(last_state & DISORDER_RANDOM_ENABLED); |
| 364 | const int usable = 1; |
| 365 | update_icon(icon, visible, usable); |
| 366 | } |
| 367 | |
| 368 | static void update_random_disable(const struct icon *icon) { |
| 369 | const int visible = !!(last_state & DISORDER_RANDOM_ENABLED); |
| 370 | const int usable = 1; |
| 371 | update_icon(icon, visible, usable); |
| 372 | } |
| 373 | |
| 374 | static void update_enable(const struct icon *icon) { |
| 375 | const int visible = !(last_state & DISORDER_PLAYING_ENABLED); |
| 376 | const int usable = 1; |
| 377 | update_icon(icon, visible, usable); |
| 378 | } |
| 379 | |
| 380 | static void update_disable(const struct icon *icon) { |
| 381 | const int visible = !!(last_state & DISORDER_PLAYING_ENABLED); |
| 382 | const int usable = 1; |
| 383 | update_icon(icon, visible, usable); |
| 384 | } |
| 385 | |
| 386 | static void update_rtp(const struct icon *icon) { |
| 387 | const int visible = !rtp_is_running; |
| 388 | const int usable = rtp_supported; |
| 389 | update_icon(icon, visible, usable); |
| 390 | } |
| 391 | |
| 392 | static void update_nortp(const struct icon *icon) { |
| 393 | const int visible = rtp_is_running; |
| 394 | const int usable = rtp_supported; |
| 395 | update_icon(icon, visible, usable); |
| 396 | } |
| 397 | |
| 398 | static void clicked_icon(GtkButton attribute((unused)) *button, |
| 399 | gpointer userdata) { |
| 400 | const struct icon *icon = userdata; |
| 401 | |
| 402 | if(!suppress_actions) |
| 403 | icon->action(client, 0, 0); |
| 404 | } |
| 405 | |
| 406 | static void clicked_menu(GtkMenuItem attribute((unused)) *menuitem, |
| 407 | gpointer userdata) { |
| 408 | const struct icon *icon = userdata; |
| 409 | |
| 410 | if(!suppress_actions) |
| 411 | icon->action(client, 0, 0); |
| 412 | } |
| 413 | |
| 414 | static void toggled_menu(GtkCheckMenuItem *menuitem, |
| 415 | gpointer userdata) { |
| 416 | const struct icon *icon = userdata; |
| 417 | size_t n; |
| 418 | |
| 419 | if(suppress_actions) |
| 420 | return; |
| 421 | /* This is a bit fiddlier than the others, we need to find the action for the |
| 422 | * new state. If the new state is active then we want the ICON_INACTIVE |
| 423 | * version and vica versa. */ |
| 424 | for(n = 0; n < NICONS; ++n) |
| 425 | if(icons[n].item == icon->item |
| 426 | && !!(icons[n].flags & ICON_INACTIVE) == !!menuitem->active) |
| 427 | break; |
| 428 | if(n < NICONS) |
| 429 | icons[n].action(client, 0, 0); |
| 430 | } |
| 431 | |
| 432 | /** @brief Called when the volume has been adjusted */ |
| 433 | static void volume_adjusted(GtkAdjustment attribute((unused)) *a, |
| 434 | gpointer attribute((unused)) user_data) { |
| 435 | double v = gtk_adjustment_get_value(volume_adj) / goesupto; |
| 436 | double b = gtk_adjustment_get_value(balance_adj); |
| 437 | |
| 438 | if(suppress_actions) |
| 439 | /* This is the result of an update from the server, not a change from the |
| 440 | * user. Don't feedback! */ |
| 441 | return; |
| 442 | D(("volume_adjusted")); |
| 443 | /* force to 'stereotypical' values */ |
| 444 | v = nearbyint(100 * v) / 100; |
| 445 | b = nearbyint(5 * b) / 5; |
| 446 | /* Set the volume. We don't want a reply, we'll get the actual new volume |
| 447 | * from the log. */ |
| 448 | if(rtp_supported) { |
| 449 | int l = nearbyint(left(v, b) * 100), r = nearbyint(right(v, b) * 100); |
| 450 | mixer_control(&l, &r, 1); |
| 451 | } else |
| 452 | /* We don't want a reply, we'll get the actual new volume from the log. */ |
| 453 | disorder_eclient_volume(client, 0, |
| 454 | nearbyint(left(v, b) * 100), |
| 455 | nearbyint(right(v, b) * 100), |
| 456 | 0); |
| 457 | } |
| 458 | |
| 459 | /** @brief Formats the volume value */ |
| 460 | static gchar *format_volume(GtkScale attribute((unused)) *scale, |
| 461 | gdouble value) { |
| 462 | char s[32]; |
| 463 | |
| 464 | snprintf(s, sizeof s, "%.1f", (double)value); |
| 465 | return g_strdup(s); |
| 466 | } |
| 467 | |
| 468 | /** @brief Formats the balance value */ |
| 469 | static gchar *format_balance(GtkScale attribute((unused)) *scale, |
| 470 | gdouble value) { |
| 471 | char s[32]; |
| 472 | |
| 473 | if(fabs(value) < 0.1) |
| 474 | return g_strdup("0"); |
| 475 | snprintf(s, sizeof s, "%+.1f", (double)value); |
| 476 | return g_strdup(s); |
| 477 | } |
| 478 | |
| 479 | /* Volume mapping. We consider left, right, volume to be in [0,1] |
| 480 | * and balance to be in [-1,1]. |
| 481 | * |
| 482 | * First, we just have volume = max(left, right). |
| 483 | * |
| 484 | * Balance we consider to linearly represent the amount by which the quieter |
| 485 | * channel differs from the louder. In detail: |
| 486 | * |
| 487 | * if right > left then balance > 0: |
| 488 | * balance = 0 => left = right (as an endpoint, not an instance) |
| 489 | * balance = 1 => left = 0 |
| 490 | * fitting to linear, left = right * (1 - balance) |
| 491 | * so balance = 1 - left / right |
| 492 | * (right > left => right > 0 so no division by 0.) |
| 493 | * |
| 494 | * if left > right then balance < 0: |
| 495 | * balance = 0 => right = left (same caveat as above) |
| 496 | * balance = -1 => right = 0 |
| 497 | * again fitting to linear, right = left * (1 + balance) |
| 498 | * so balance = right / left - 1 |
| 499 | * (left > right => left > 0 so no division by 0.) |
| 500 | * |
| 501 | * if left = right then we just have balance = 0. |
| 502 | * |
| 503 | * Thanks to Clive and Andrew. |
| 504 | */ |
| 505 | |
| 506 | /** @brief Return the greater of @p x and @p y */ |
| 507 | static double max(double x, double y) { |
| 508 | return x > y ? x : y; |
| 509 | } |
| 510 | |
| 511 | /** @brief Compute the left channel volume */ |
| 512 | static double left(double v, double b) { |
| 513 | if(b > 0) /* volume = right */ |
| 514 | return v * (1 - b); |
| 515 | else /* volume = left */ |
| 516 | return v; |
| 517 | } |
| 518 | |
| 519 | /** @brief Compute the right channel volume */ |
| 520 | static double right(double v, double b) { |
| 521 | if(b > 0) /* volume = right */ |
| 522 | return v; |
| 523 | else /* volume = left */ |
| 524 | return v * (1 + b); |
| 525 | } |
| 526 | |
| 527 | /** @brief Compute the overall volume */ |
| 528 | static double volume(double l, double r) { |
| 529 | return max(l, r); |
| 530 | } |
| 531 | |
| 532 | /** @brief Compute the balance */ |
| 533 | static double balance(double l, double r) { |
| 534 | if(l > r) |
| 535 | return r / l - 1; |
| 536 | else if(r > l) |
| 537 | return 1 - l / r; |
| 538 | else /* left = right */ |
| 539 | return 0; |
| 540 | } |
| 541 | |
| 542 | /** @brief Called to enable RTP play |
| 543 | * |
| 544 | * Rather odd signature is to fit in with the other icons which all call @ref |
| 545 | * lib/eclient.h functions. |
| 546 | */ |
| 547 | static int enable_rtp(disorder_eclient attribute((unused)) *c, |
| 548 | disorder_eclient_no_response attribute((unused)) *completed, |
| 549 | void attribute((unused)) *v) { |
| 550 | start_rtp(); |
| 551 | return 0; |
| 552 | } |
| 553 | |
| 554 | /** @brief Called to disable RTP play |
| 555 | * |
| 556 | * Rather odd signature is to fit in with the other icons which all call @ref |
| 557 | * lib/eclient.h functions. |
| 558 | */ |
| 559 | static int disable_rtp(disorder_eclient attribute((unused)) *c, |
| 560 | disorder_eclient_no_response attribute((unused)) *completed, |
| 561 | void attribute((unused)) *v) { |
| 562 | stop_rtp(); |
| 563 | return 0; |
| 564 | } |
| 565 | |
| 566 | /* |
| 567 | Local Variables: |
| 568 | c-basic-offset:2 |
| 569 | comment-column:40 |
| 570 | fill-column:79 |
| 571 | indent-tabs-mode:nil |
| 572 | End: |
| 573 | */ |