src/main.c

   1 /*
   2  * Copyright © 2012-2019 Collabora, Ltd.
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining
   5  * a copy of this software and associated documentation files (the
   6  * "Software"), to deal in the Software without restriction, including
   7  * without limitation the rights to use, copy, modify, merge, publish,
   8  * distribute, sublicense, and/or sell copies of the Software, and to
   9  * permit persons to whom the Software is furnished to do so, subject to
  10  * the following conditions:
  11  *
  12  * The above copyright notice and this permission notice (including the
  13  * next paragraph) shall be included in all copies or substantial
  14  * portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  17  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  18  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  19  * NONINFRINGEMENT.  IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  20  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  21  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  22  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  23  * SOFTWARE.
  24  */
  25
  26 #include "ivi-compositor.h"
  27 #include "policy.h"
  28
  29 #include <assert.h>
  30 #include <errno.h>
  31 #include <signal.h>
  32 #include <stdarg.h>
  33 #include <stdbool.h>
  34 #include <stdio.h>
  35 #include <stdlib.h>
  36 #include <string.h>
  37 #include <unistd.h>
  38 #include <linux/input.h>
  39
  40 #include <libweston/backend-drm.h>
  41 #include <libweston/backend-wayland.h>
  42 #ifdef HAVE_BACKEND_X11
  43 #include <libweston/backend-x11.h>
  44 #endif
  45 #include <libweston/libweston.h>
  46 #include <libweston/windowed-output-api.h>
  47 #include <libweston/config-parser.h>
  48 #include <libweston/weston-log.h>
  49
  50 #include "shared/os-compatibility.h"
  51 #include "shared/helpers.h"
  52
  53 #include "agl-shell-server-protocol.h"
  54
  55 static int cached_tm_mday = -1;
  56 static struct weston_log_scope *log_scope;
  57
  58 struct ivi_compositor *
  59 to_ivi_compositor(struct weston_compositor *ec)
  60 {
  61         return weston_compositor_get_user_data(ec);
  62 }
  63
  64 static void
  65 handle_output_destroy(struct wl_listener *listener, void *data)
  66 {
  67         struct ivi_output *output;
  68
  69         output = wl_container_of(listener, output, output_destroy);
  70         assert(output->output == data);
  71
  72         output->output = NULL;
  73         wl_list_remove(&output->output_destroy.link);
  74 }
  75
  76 struct ivi_output *
  77 to_ivi_output(struct weston_output *o)
  78 {
  79         struct wl_listener *listener;
  80         struct ivi_output *output;
  81
  82         listener = weston_output_get_destroy_listener(o, handle_output_destroy);
  83         output = wl_container_of(listener, output, output_destroy);
  84
  85         return output;
  86 }
  87
  88 static struct ivi_output *
  89 ivi_ensure_output(struct ivi_compositor *ivi, char *name,
  90                   struct weston_config_section *config)
  91 {
  92         struct ivi_output *output = NULL;
  93         wl_list_for_each(output, &ivi->outputs, link) {
  94                 if (strcmp(output->name, name) == 0) {
  95                         free(name);
  96                         return output;
  97                 }
  98         }
  99
 100         output = zalloc(sizeof *output);
 101         if (!output) {
 102                 free(name);
 103                 return NULL;
 104         }
 105
 106         output->ivi = ivi;
 107         output->name = name;
 108         output->config = config;
 109
 110         output->output = weston_compositor_create_output(ivi->compositor, name);
 111         if (!output->output) {
 112                 free(output->name);
 113                 free(output);
 114                 return NULL;
 115         }
 116
 117         output->output_destroy.notify = handle_output_destroy;
 118         weston_output_add_destroy_listener(output->output,
 119                                            &output->output_destroy);
 120
 121         wl_list_insert(&ivi->outputs, &output->link);
 122         return output;
 123 }
 124
 125 static int
 126 count_heads(struct weston_output *output)
 127 {
 128         struct weston_head *iter = NULL;
 129         int n = 0;
 130
 131         while ((iter = weston_output_iterate_heads(output, iter)))
 132                 ++n;
 133
 134         return n;
 135 }
 136
 137 static void
 138 handle_head_destroy(struct wl_listener *listener, void *data)
 139 {
 140         struct weston_head *head = data;
 141         struct weston_output *output;
 142
 143         wl_list_remove(&listener->link);
 144         free(listener);
 145
 146         output = weston_head_get_output(head);
 147
 148         /* On shutdown path, the output might be already gone. */
 149         if (!output)
 150                 return;
 151
 152         /* We're the last head */
 153         if (count_heads(output) <= 1)
 154                 weston_output_destroy(output);
 155 }
 156
 157 static void
 158 add_head_destroyed_listener(struct weston_head *head)
 159 {
 160         /* We already have a destroy listener */
 161         if (weston_head_get_destroy_listener(head, handle_head_destroy))
 162                 return;
 163
 164         struct wl_listener *listener = zalloc(sizeof *listener);
 165         if (!listener)
 166                 return;
 167
 168         listener->notify = handle_head_destroy;
 169         weston_head_add_destroy_listener(head, listener);
 170 }
 171
 172 static int
 173 drm_configure_output(struct ivi_output *output)
 174 {
 175         struct ivi_compositor *ivi = output->ivi;
 176         struct weston_config_section *section = output->config;
 177         enum weston_drm_backend_output_mode mode =
 178                 WESTON_DRM_BACKEND_OUTPUT_PREFERRED;
 179         char *modeline = NULL;
 180         char *gbm_format = NULL;
 181         char *seat = NULL;
 182
 183         if (section) {
 184                 char *m;
 185                 weston_config_section_get_string(section, "mode", &m, "preferred");
 186
 187                 /* This should have been handled earlier */
 188                 assert(strcmp(m, "off") != 0);
 189
 190                 if (ivi->cmdline.use_current_mode || strcmp(m, "current") == 0) {
 191                         mode = WESTON_DRM_BACKEND_OUTPUT_CURRENT;
 192                 } else if (strcmp(m, "preferred") != 0) {
 193                         modeline = m;
 194                         m = NULL;
 195                 }
 196                 free(m);
 197
 198                 weston_config_section_get_string(section, "gbm-format",
 199                                                  &gbm_format, NULL);
 200
 201                 weston_config_section_get_string(section, "seat", &seat, "");
 202         }
 203
 204         if (ivi->drm_api->set_mode(output->output, mode, modeline) < 0) {
 205                 weston_log("Cannot configure output using weston_drm_output_api.\n");
 206                 free(modeline);
 207                 return -1;
 208         }
 209         free(modeline);
 210
 211         ivi->drm_api->set_gbm_format(output->output, gbm_format);
 212         free(gbm_format);
 213
 214         ivi->drm_api->set_seat(output->output, seat);
 215         free(seat);
 216
 217         return 0;
 218 }
 219
 220 #define WINDOWED_DEFAULT_WIDTH 1024
 221 #define WINDOWED_DEFAULT_HEIGHT 768
 222
 223 static int
 224 windowed_configure_output(struct ivi_output *output)
 225 {
 226         struct ivi_compositor *ivi = output->ivi;
 227         struct weston_config_section *section = output->config;
 228         int width = WINDOWED_DEFAULT_WIDTH;
 229         int height = WINDOWED_DEFAULT_HEIGHT;
 230
 231         if (section) {
 232                 char *mode;
 233
 234                 weston_config_section_get_string(section, "mode", &mode, NULL);
 235                 if (!mode || sscanf(mode, "%dx%d", &width, &height) != 2) {
 236                         weston_log("Invalid mode for output %s. Using defaults.\n",
 237                                    output->name);
 238                         width = WINDOWED_DEFAULT_WIDTH;
 239                         height = WINDOWED_DEFAULT_HEIGHT;
 240                 }
 241                 free(mode);
 242         }
 243
 244         if (ivi->cmdline.width)
 245                 width = ivi->cmdline.width;
 246         if (ivi->cmdline.height)
 247                 height = ivi->cmdline.height;
 248         if (ivi->cmdline.scale)
 249                 weston_output_set_scale(output->output, ivi->cmdline.scale);
 250
 251         if (ivi->window_api->output_set_size(output->output, width, height) < 0) {
 252                 weston_log("Cannot configure output '%s' using weston_windowed_output_api.\n",
 253                            output->name);
 254                 return -1;
 255         }
 256
 257         return 0;
 258 }
 259
 260 static int
 261 parse_transform(const char *transform, uint32_t *out)
 262 {
 263         static const struct { const char *name; uint32_t token; } transforms[] = {
 264                 { "normal",     WL_OUTPUT_TRANSFORM_NORMAL },
 265                 { "90",         WL_OUTPUT_TRANSFORM_90 },
 266                 { "180",        WL_OUTPUT_TRANSFORM_180 },
 267                 { "270",        WL_OUTPUT_TRANSFORM_270 },
 268                 { "flipped",    WL_OUTPUT_TRANSFORM_FLIPPED },
 269                 { "flipped-90", WL_OUTPUT_TRANSFORM_FLIPPED_90 },
 270                 { "flipped-180", WL_OUTPUT_TRANSFORM_FLIPPED_180 },
 271                 { "flipped-270", WL_OUTPUT_TRANSFORM_FLIPPED_270 },
 272         };
 273
 274         for (size_t i = 0; i < ARRAY_LENGTH(transforms); i++)
 275                 if (strcmp(transforms[i].name, transform) == 0) {
 276                         *out = transforms[i].token;
 277                         return 0;
 278                 }
 279
 280         *out = WL_OUTPUT_TRANSFORM_NORMAL;
 281         return -1;
 282 }
 283
 284 static int
 285 configure_output(struct ivi_output *output)
 286 {
 287         struct ivi_compositor *ivi = output->ivi;
 288         struct weston_config_section *section = output->config;
 289         int32_t scale = 1;
 290         uint32_t transform = WL_OUTPUT_TRANSFORM_NORMAL;
 291
 292         /*
 293          * This can happen with the wayland backend with 'sprawl'. The config
 294          * is hard-coded, so we don't need to do anything.
 295          */
 296         if (!ivi->drm_api && !ivi->window_api)
 297                 return 0;
 298
 299         if (section) {
 300                 char *t;
 301
 302                 weston_config_section_get_int(section, "scale", &scale, 1);
 303                 weston_config_section_get_string(section, "transform", &t, "normal");
 304                 if (parse_transform(t, &transform) < 0)
 305                         weston_log("Invalid transform \"%s\" for output %s\n",
 306                                    t, output->name);
 307                 free(t);
 308         }
 309
 310         weston_output_set_scale(output->output, scale);
 311         weston_output_set_transform(output->output, transform);
 312
 313         if (ivi->drm_api)
 314                 return drm_configure_output(output);
 315         else
 316                 return windowed_configure_output(output);
 317 }
 318
 319 /*
 320  * Reorgainizes the output's add array into two sections.
 321  * add[0..ret-1] are the heads that failed to get attached.
 322  * add[ret..add_len] are the heads that were successfully attached.
 323  *
 324  * The order between elements in each section is stable.
 325  */
 326 static size_t
 327 try_attach_heads(struct ivi_output *output)
 328 {
 329         size_t fail_len = 0;
 330
 331         for (size_t i = 0; i < output->add_len; ++i) {
 332                 if (weston_output_attach_head(output->output, output->add[i]) < 0) {
 333                         struct weston_head *tmp = output->add[i];
 334                         memmove(&output->add[fail_len + 1], output->add[fail_len],
 335                                 sizeof output->add[0] * (i - fail_len));
 336                         output->add[fail_len++] = tmp;
 337                 }
 338         }
 339
 340         return fail_len;
 341 }
 342
 343 /*
 344  * Like try_attach_heads, this reorganizes the output's add array into a failed
 345  * and successful section.
 346  * i is the number of heads that already failed the previous step.
 347  */
 348 static size_t
 349 try_enable_output(struct ivi_output *output, size_t i)
 350 {
 351         for (; i < output->add_len; ++i) {
 352                 struct weston_head *head;
 353
 354                 if (weston_output_enable(output->output) == 0)
 355                         break;
 356
 357                 head = output->add[output->add_len - 1];
 358                 memmove(&output->add[i + 1], &output->add[i],
 359                         sizeof output->add[0] * (output->add_len - i));
 360                 output->add[i] = head;
 361
 362                 weston_head_detach(head);
 363         }
 364
 365         return i;
 366 }
 367
 368 static int
 369 try_attach_enable_heads(struct ivi_output *output)
 370 {
 371         size_t fail_len;
 372         assert(!output->output->enabled);
 373
 374         fail_len = try_attach_heads(output);
 375
 376         if (configure_output(output) < 0)
 377                 return -1;
 378
 379         fail_len = try_enable_output(output, fail_len);
 380
 381         /* All heads failed to be attached */
 382         if (fail_len == output->add_len)
 383                 return -1;
 384
 385         /* For each successful head attached */
 386         for (size_t i = fail_len; i < output->add_len; ++i)
 387                 add_head_destroyed_listener(output->add[i]);
 388
 389         output->add_len = fail_len;
 390         return 0;
 391 }
 392
 393 static int
 394 process_output(struct ivi_output *output)
 395 {
 396         if (output->output->enabled) {
 397                 output->add_len = try_attach_heads(output);
 398                 return output->add_len == 0 ? 0 : -1;
 399         }
 400
 401         return try_attach_enable_heads(output);
 402 }
 403
 404 static void
 405 head_disable(struct ivi_compositor *ivi, struct weston_head *head)
 406 {
 407         struct weston_output *output;
 408         struct ivi_output *ivi_output;
 409         struct wl_listener *listener;
 410
 411         output = weston_head_get_output(head);
 412         assert(output);
 413
 414         listener = weston_output_get_destroy_listener(output,
 415                                                       handle_output_destroy);
 416         assert(listener);
 417
 418         ivi_output = wl_container_of(listener, ivi_output, output_destroy);
 419         assert(ivi_output->output == output);
 420
 421         weston_head_detach(head);
 422         if (count_heads(ivi_output->output) == 0) {
 423                 weston_output_disable(ivi_output->output);
 424         }
 425 }
 426
 427 static struct weston_config_section *
 428 find_controlling_output_config(struct weston_config *config,
 429                                const char *name)
 430 {
 431         struct weston_config_section *section;
 432         char *same_as;
 433         int depth = 0;
 434
 435         same_as = strdup(name);
 436         do {
 437                 section = weston_config_get_section(config, "output",
 438                                                     "name", same_as);
 439                 if (!section && depth > 0)
 440                         weston_log("Configuration error: output section reffered"
 441                                    "to by same-as=%s not found.\n", same_as);
 442                 free(same_as);
 443
 444                 if (!section)
 445                         return NULL;
 446
 447                 if (depth++ > 8) {
 448                         weston_log("Configuration error: same-as nested too "
 449                                    "deep for output '%s'.\n", name);
 450                         return NULL;
 451                 }
 452
 453                 weston_config_section_get_string(section, "same-as",
 454                                                  &same_as, NULL);
 455         } while (same_as);
 456
 457         return section;
 458 }
 459
 460 static void
 461 head_prepare_enable(struct ivi_compositor *ivi, struct weston_head *head)
 462 {
 463         const char *name = weston_head_get_name(head);
 464         struct weston_config_section *section;
 465         struct ivi_output *output;
 466         char *output_name = NULL;
 467
 468         section = find_controlling_output_config(ivi->config, name);
 469         if (section) {
 470                 char *mode;
 471
 472                 weston_config_section_get_string(section, "mode", &mode, NULL);
 473                 if (mode && strcmp(mode, "off") == 0) {
 474                         free(mode);
 475                         return;
 476                 }
 477                 free(mode);
 478
 479                 weston_config_section_get_string(section, "name",
 480                                                  &output_name, NULL);
 481         } else {
 482                 output_name = strdup(name);
 483         }
 484
 485         if (!output_name)
 486                 return;
 487
 488         output = ivi_ensure_output(ivi, output_name, section);
 489         if (!output)
 490                 return;
 491
 492         if (output->add_len >= ARRAY_LENGTH(output->add))
 493                 return;
 494
 495         output->add[output->add_len++] = head;
 496 }
 497
 498 static void
 499 heads_changed(struct wl_listener *listener, void *arg)
 500 {
 501         struct weston_compositor *compositor = arg;
 502         struct weston_head *head = NULL;
 503         struct ivi_compositor *ivi = to_ivi_compositor(compositor);
 504         struct ivi_output *output;
 505
 506         while ((head = weston_compositor_iterate_heads(ivi->compositor, head))) {
 507                 bool connected = weston_head_is_connected(head);
 508                 bool enabled = weston_head_is_enabled(head);
 509                 bool changed = weston_head_is_device_changed(head);
 510                 bool non_desktop = weston_head_is_non_desktop(head);
 511
 512                 if (connected && !enabled && !non_desktop)
 513                         head_prepare_enable(ivi, head);
 514                 else if (!connected && enabled)
 515                         head_disable(ivi, head);
 516                 else if (enabled && changed)
 517                         weston_log("Detected a monitor change on head '%s', "
 518                                    "not bothering to do anything about it.\n",
 519                                    weston_head_get_name(head));
 520
 521                 weston_head_reset_device_changed(head);
 522         }
 523
 524         wl_list_for_each(output, &ivi->outputs, link) {
 525                 if (output->add_len == 0)
 526                         continue;
 527
 528                 if (process_output(output) < 0) {
 529                         output->add_len = 0;
 530                         ivi->init_failed = true;
 531                 }
 532         }
 533 }
 534
 535 static int
 536 load_drm_backend(struct ivi_compositor *ivi, int *argc, char *argv[])
 537 {
 538         struct weston_drm_backend_config config = {
 539                 .base = {
 540                         .struct_version = WESTON_DRM_BACKEND_CONFIG_VERSION,
 541                         .struct_size = sizeof config,
 542                 },
 543         };
 544         struct weston_config_section *section;
 545         int use_current_mode = 0;
 546         int use_pixman = 0;
 547         bool use_shadow;
 548         int ret;
 549
 550         const struct weston_option options[] = {
 551                 { WESTON_OPTION_STRING, "seat", 0, &config.seat_id },
 552                 { WESTON_OPTION_INTEGER, "tty", 0, &config.tty },
 553                 { WESTON_OPTION_STRING, "drm-device", 0, &config.specific_device },
 554                 { WESTON_OPTION_BOOLEAN, "current-mode", 0, &use_current_mode },
 555                 { WESTON_OPTION_BOOLEAN, "use-pixman", 0, &use_pixman },
 556         };
 557
 558         parse_options(options, ARRAY_LENGTH(options), argc, argv);
 559         config.use_pixman = use_pixman;
 560         ivi->cmdline.use_current_mode = use_current_mode;
 561
 562         section = weston_config_get_section(ivi->config, "core", NULL, NULL);
 563         weston_config_section_get_string(section, "gbm-format",
 564                                          &config.gbm_format, NULL);
 565         weston_config_section_get_uint(section, "pageflip-timeout",
 566                                        &config.pageflip_timeout, 0);
 567         weston_config_section_get_bool(section, "pixman-shadow", &use_shadow, 1);
 568         config.use_pixman_shadow = use_shadow;
 569
 570         ret = weston_compositor_load_backend(ivi->compositor, WESTON_BACKEND_DRM,
 571                                              &config.base);
 572         if (ret < 0)
 573                 return ret;
 574
 575         ivi->drm_api = weston_drm_output_get_api(ivi->compositor);
 576         if (!ivi->drm_api) {
 577                 weston_log("Cannot use drm output api.\n");
 578                 ret = -1;
 579                 goto error;
 580         }
 581
 582 error:
 583         free(config.gbm_format);
 584         free(config.seat_id);
 585         return ret;
 586 }
 587
 588 static void
 589 windowed_parse_common_options(struct ivi_compositor *ivi, int *argc, char *argv[],
 590                               bool *use_pixman, bool *fullscreen, int *output_count)
 591 {
 592         struct weston_config_section *section;
 593         bool pixman;
 594         int fs = 0;
 595
 596         const struct weston_option options[] = {
 597                 { WESTON_OPTION_INTEGER, "width", 0, &ivi->cmdline.width },
 598                 { WESTON_OPTION_INTEGER, "height", 0, &ivi->cmdline.height },
 599                 { WESTON_OPTION_INTEGER, "scale", 0, &ivi->cmdline.scale },
 600                 { WESTON_OPTION_BOOLEAN, "use-pixman", 0, &pixman },
 601                 { WESTON_OPTION_BOOLEAN, "fullscreen", 0, &fs },
 602                 { WESTON_OPTION_INTEGER, "output-count", 0, output_count },
 603         };
 604
 605         section = weston_config_get_section(ivi->config, "core", NULL, NULL);
 606         weston_config_section_get_bool(section, "use-pixman", &pixman, 0);
 607
 608         *output_count = 1;
 609         parse_options(options, ARRAY_LENGTH(options), argc, argv);
 610         *use_pixman = pixman;
 611         *fullscreen = fs;
 612 }
 613
 614 static int
 615 windowed_create_outputs(struct ivi_compositor *ivi, int output_count,
 616                         const char *match_prefix, const char *name_prefix)
 617 {
 618         struct weston_config_section *section = NULL;
 619         const char *section_name;
 620         char *default_output = NULL;
 621         int i = 0;
 622         size_t match_len = strlen(match_prefix);
 623
 624         while (weston_config_next_section(ivi->config, &section, &section_name)) {
 625                 char *output_name;
 626
 627                 if (i >= output_count)
 628                         break;
 629
 630                 if (strcmp(section_name, "output") != 0)
 631                         continue;
 632
 633                 weston_config_section_get_string(section, "name", &output_name, NULL);
 634                 if (output_name == NULL)
 635                         continue;
 636                 if (strncmp(output_name, match_prefix, match_len) != 0) {
 637                         free(output_name);
 638                         continue;
 639                 }
 640
 641                 if (ivi->window_api->create_head(ivi->compositor, output_name) < 0) {
 642                         free(output_name);
 643                         return -1;
 644                 }
 645
 646                 free(output_name);
 647                 ++i;
 648         }
 649
 650         for (; i < output_count; ++i) {
 651                 if (asprintf(&default_output, "%s%d", name_prefix, i) < 0)
 652                         return -1;
 653
 654                 if (ivi->window_api->create_head(ivi->compositor, default_output) < 0) {
 655                         free(default_output);
 656                         return -1;
 657                 }
 658
 659                 free(default_output);
 660         }
 661
 662         return 0;
 663 }
 664
 665 static int
 666 load_wayland_backend(struct ivi_compositor *ivi, int *argc, char *argv[])
 667 {
 668         struct weston_wayland_backend_config config = {
 669                 .base = {
 670                         .struct_version = WESTON_WAYLAND_BACKEND_CONFIG_VERSION,
 671                         .struct_size = sizeof config,
 672                 },
 673         };
 674         struct weston_config_section *section;
 675         int sprawl = 0;
 676         int output_count;
 677         int ret;
 678
 679         const struct weston_option options[] = {
 680                 { WESTON_OPTION_STRING, "display", 0, &config.display_name },
 681                 { WESTON_OPTION_STRING, "sprawl", 0, &sprawl },
 682         };
 683
 684         windowed_parse_common_options(ivi, argc, argv, &config.use_pixman,
 685                                       &config.fullscreen, &output_count);
 686
 687         parse_options(options, ARRAY_LENGTH(options), argc, argv);
 688         config.sprawl = sprawl;
 689
 690         section = weston_config_get_section(ivi->config, "shell", NULL, NULL);
 691         weston_config_section_get_string(section, "cursor-theme",
 692                                          &config.cursor_theme, NULL);
 693         weston_config_section_get_int(section, "cursor-size",
 694                                       &config.cursor_size, 32);
 695
 696         ret = weston_compositor_load_backend(ivi->compositor, WESTON_BACKEND_WAYLAND,
 697                                              &config.base);
 698
 699         free(config.cursor_theme);
 700         free(config.display_name);
 701
 702         if (ret < 0)
 703                 return ret;
 704
 705         ivi->window_api = weston_windowed_output_get_api(ivi->compositor);
 706
 707         /*
 708          * We will just assume if load_backend() finished cleanly and
 709          * windowed_output_api is not present that wayland backend is started
 710          * with --sprawl or runs on fullscreen-shell. In this case, all values
 711          * are hardcoded, so nothing can be configured; simply create and
 712          * enable an output.
 713          */
 714         if (ivi->window_api == NULL)
 715                 return 0;
 716
 717         return windowed_create_outputs(ivi, output_count, "WL", "wayland");
 718 }
 719
 720 #ifdef HAVE_BACKEND_X11
 721 static int
 722 load_x11_backend(struct ivi_compositor *ivi, int *argc, char *argv[])
 723 {
 724         struct weston_x11_backend_config config = {
 725                 .base = {
 726                         .struct_version = WESTON_X11_BACKEND_CONFIG_VERSION,
 727                         .struct_size = sizeof config,
 728                 },
 729         };
 730         int no_input = 0;
 731         int output_count;
 732         int ret;
 733
 734         const struct weston_option options[] = {
 735                { WESTON_OPTION_BOOLEAN, "no-input", 0, &no_input },
 736         };
 737
 738         windowed_parse_common_options(ivi, argc, argv, &config.use_pixman,
 739                                       &config.fullscreen, &output_count);
 740
 741         parse_options(options, ARRAY_LENGTH(options), argc, argv);
 742         config.no_input = no_input;
 743
 744         ret = weston_compositor_load_backend(ivi->compositor, WESTON_BACKEND_X11,
 745                                              &config.base);
 746
 747         if (ret < 0)
 748                 return ret;
 749
 750         ivi->window_api = weston_windowed_output_get_api(ivi->compositor);
 751         if (!ivi->window_api) {
 752                 weston_log("Cannot use weston_windowed_output_api.\n");
 753                 return -1;
 754         }
 755
 756         return windowed_create_outputs(ivi, output_count, "X", "screen");
 757 }
 758 #else
 759 static int
 760 load_x11_backend(struct ivi_compositor *ivi, int *argc, char *argv[])
 761 {
 762         return -1;
 763 }
 764 #endif
 765
 766 static int
 767 load_backend(struct ivi_compositor *ivi, const char *backend,
 768              int *argc, char *argv[])
 769 {
 770         if (strcmp(backend, "drm-backend.so") == 0) {
 771                 return load_drm_backend(ivi, argc, argv);
 772         } else if (strcmp(backend, "wayland-backend.so") == 0) {
 773                 return load_wayland_backend(ivi, argc, argv);
 774         } else if (strcmp(backend, "x11-backend.so") == 0) {
 775                 return load_x11_backend(ivi, argc, argv);
 776         }
 777
 778         weston_log("fatal: unknown backend '%s'.\n", backend);
 779         return -1;
 780 }
 781
 782 static char *
 783 choose_default_backend(void)
 784 {
 785         char *backend = NULL;
 786
 787         if (getenv("WAYLAND_DISPLAY") || getenv("WAYLAND_SOCKET"))
 788                 backend = strdup("wayland-backend.so");
 789         else if (getenv("DISPLAY"))
 790                 backend = strdup("x11-backend.so");
 791         else
 792                 backend = strdup("drm-backend.so");
 793
 794         return backend;
 795 }
 796
 797 static int
 798 compositor_init_config(struct weston_compositor *compositor,
 799                        struct weston_config *config)
 800 {
 801         struct xkb_rule_names xkb_names;
 802         struct weston_config_section *section;
 803         int repaint_msec;
 804         bool vt_switching;
 805         bool require_input;
 806
 807         /* agl-compositor.ini [keyboard] */
 808         section = weston_config_get_section(config, "keyboard", NULL, NULL);
 809         weston_config_section_get_string(section, "keymap_rules",
 810                                          (char **) &xkb_names.rules, NULL);
 811         weston_config_section_get_string(section, "keymap_model",
 812                                          (char **) &xkb_names.model, NULL);
 813         weston_config_section_get_string(section, "keymap_layout",
 814                                          (char **) &xkb_names.layout, NULL);
 815         weston_config_section_get_string(section, "keymap_variant",
 816                                          (char **) &xkb_names.variant, NULL);
 817         weston_config_section_get_string(section, "keymap_options",
 818                                          (char **) &xkb_names.options, NULL);
 819
 820         if (weston_compositor_set_xkb_rule_names(compositor, &xkb_names) < 0)
 821                 return -1;
 822
 823         weston_config_section_get_int(section, "repeat-rate",
 824                                       &compositor->kb_repeat_rate, 40);
 825         weston_config_section_get_int(section, "repeat-delay",
 826                                       &compositor->kb_repeat_delay, 400);
 827
 828         weston_config_section_get_bool(section, "vt-switching",
 829                                        &vt_switching, true);
 830         compositor->vt_switching = vt_switching;
 831
 832         /* agl-compositor.ini [core] */
 833         section = weston_config_get_section(config, "core", NULL, NULL);
 834
 835         weston_config_section_get_bool(section, "require-input", &require_input, true);
 836         compositor->require_input = require_input;
 837
 838         weston_config_section_get_int(section, "repaint-window", &repaint_msec,
 839                                       compositor->repaint_msec);
 840         if (repaint_msec < -10 || repaint_msec > 1000) {
 841                 weston_log("Invalid repaint_window value in config: %d\n",
 842                            repaint_msec);
 843         } else {
 844                 compositor->repaint_msec = repaint_msec;
 845         }
 846         weston_log("Output repaint window is %d ms maximum.\n",
 847                    compositor->repaint_msec);
 848
 849         return 0;
 850 }
 851
 852 struct ivi_surface *
 853 to_ivi_surface(struct weston_surface *surface)
 854 {
 855         struct weston_desktop_surface *dsurface;
 856
 857         dsurface = weston_surface_get_desktop_surface(surface);
 858         if (!dsurface)
 859                 return NULL;
 860
 861         return weston_desktop_surface_get_user_data(dsurface);
 862 }
 863
 864 static void
 865 activate_binding(struct weston_seat *seat,
 866                  struct weston_view *focus_view)
 867 {
 868         struct weston_surface *focus = focus_view->surface;
 869         struct weston_surface *main_surface =
 870                 weston_surface_get_main_surface(focus);
 871         struct ivi_surface *surface;
 872
 873         surface = to_ivi_surface(main_surface);
 874         if (!surface)
 875                 return;
 876
 877         weston_seat_set_keyboard_focus(seat, focus);
 878 }
 879
 880 static void
 881 click_to_activate_binding(struct weston_pointer *pointer,
 882                           const struct timespec *time,
 883                           uint32_t button, void *data)
 884 {
 885         if (pointer->grab != &pointer->default_grab)
 886                 return;
 887         if (pointer->focus == NULL)
 888                 return;
 889
 890         activate_binding(pointer->seat, pointer->focus);
 891 }
 892
 893 static void
 894 touch_to_activate_binding(struct weston_touch *touch,
 895                           const struct timespec *time,
 896                           void *data)
 897 {
 898         if (touch->grab != &touch->default_grab)
 899                 return;
 900         if (touch->focus == NULL)
 901                 return;
 902
 903         activate_binding(touch->seat, touch->focus);
 904 }
 905
 906 static void
 907 add_bindings(struct weston_compositor *compositor)
 908 {
 909         weston_compositor_add_button_binding(compositor, BTN_LEFT, 0,
 910                                              click_to_activate_binding,
 911                                              NULL);
 912         weston_compositor_add_button_binding(compositor, BTN_RIGHT, 0,
 913                                              click_to_activate_binding,
 914                                              NULL);
 915         weston_compositor_add_touch_binding(compositor, 0,
 916                                             touch_to_activate_binding,
 917                                             NULL);
 918 }
 919
 920 static int
 921 create_listening_socket(struct wl_display *display, const char *socket_name)
 922 {
 923         if (socket_name) {
 924                 if (wl_display_add_socket(display, socket_name)) {
 925                         weston_log("fatal: failed to add socket: %s\n",
 926                                    strerror(errno));
 927                         return -1;
 928                 }
 929         } else {
 930                 socket_name = wl_display_add_socket_auto(display);
 931                 if (!socket_name) {
 932                         weston_log("fatal: failed to add socket: %s\n",
 933                                    strerror(errno));
 934                         return -1;
 935                 }
 936         }
 937
 938         setenv("WAYLAND_DISPLAY", socket_name, 1);
 939
 940         return 0;
 941 }
 942
 943 static bool
 944 global_filter(const struct wl_client *client, const struct wl_global *global,
 945               void *data)
 946 {
 947         return true;
 948 }
 949
 950 static int
 951 load_config(struct weston_config **config, bool no_config,
 952             const char *config_file)
 953 {
 954         const char *file = "agl-compositor.ini";
 955         const char *full_path;
 956
 957         if (config_file)
 958                 file = config_file;
 959
 960         if (!no_config)
 961                 *config = weston_config_parse(file);
 962
 963         if (*config) {
 964                 full_path = weston_config_get_full_path(*config);
 965
 966                 weston_log("Using config file '%s'.\n", full_path);
 967                 setenv(WESTON_CONFIG_FILE_ENV_VAR, full_path, 1);
 968
 969                 return 0;
 970         }
 971
 972         if (config_file && !no_config) {
 973                 weston_log("fatal: error opening or reading config file '%s'.\n",
 974                         config_file);
 975
 976                 return -1;
 977         }
 978
 979         weston_log("Starting with no config file.\n");
 980         setenv(WESTON_CONFIG_FILE_ENV_VAR, "", 1);
 981
 982         return 0;
 983 }
 984
 985 static FILE *logfile;
 986
 987 static char *
 988 log_timestamp(char *buf, size_t len)
 989 {
 990         struct timeval tv;
 991         struct tm *brokendown_time;
 992         char datestr[128];
 993         char timestr[128];
 994
 995         gettimeofday(&tv, NULL);
 996
 997         brokendown_time = localtime(&tv.tv_sec);
 998         if (brokendown_time == NULL) {
 999                 snprintf(buf, len, "%s", "[(NULL)localtime] ");
1000                 return buf;
1001         }
1002
1003         memset(datestr, 0, sizeof(datestr));
1004         if (brokendown_time->tm_mday != cached_tm_mday) {
1005                 strftime(datestr, sizeof(datestr), "Date: %Y-%m-%d %Z\n",
1006                                 brokendown_time);
1007                 cached_tm_mday = brokendown_time->tm_mday;
1008         }
1009
1010         strftime(timestr, sizeof(timestr), "%H:%M:%S", brokendown_time);
1011         /* if datestr is empty it prints only timestr*/
1012         snprintf(buf, len, "%s[%s.%03li]", datestr,
1013                         timestr, (tv.tv_usec / 1000));
1014
1015         return buf;
1016 }
1017
1018 static void
1019 custom_handler(const char *fmt, va_list arg)
1020 {
1021         char timestr[512];
1022
1023         weston_log_scope_printf(log_scope, "%s libwayland: ",
1024                         log_timestamp(timestr, sizeof(timestr)));
1025         weston_log_scope_vprintf(log_scope, fmt, arg);
1026 }
1027
1028 static void
1029 log_file_open(const char *filename)
1030 {
1031         wl_log_set_handler_server(custom_handler);
1032
1033         if (filename)
1034                 logfile = fopen(filename, "a");
1035
1036         if (!logfile) {
1037                 logfile = stderr;
1038         } else {
1039                 os_fd_set_cloexec(fileno(logfile));
1040                 setvbuf(logfile, NULL, _IOLBF, 256);
1041         }
1042 }
1043
1044 static void
1045 log_file_close(void)
1046 {
1047         if (logfile && logfile != stderr)
1048                 fclose(logfile);
1049         logfile = stderr;
1050 }
1051
1052 static int
1053 vlog(const char *fmt, va_list ap)
1054 {
1055         const char *oom = "Out of memory";
1056         char timestr[128];
1057         int len = 0;
1058         char *str;
1059
1060         if (weston_log_scope_is_enabled(log_scope)) {
1061                 int len_va;
1062                 char *xlog_timestamp = log_timestamp(timestr, sizeof(timestr));
1063                 len_va = vasprintf(&str, fmt, ap);
1064                 if (len_va >= 0) {
1065                         len = weston_log_scope_printf(log_scope, "%s %s",
1066                                         xlog_timestamp, str);
1067                         free(str);
1068                 } else {
1069                         len = weston_log_scope_printf(log_scope, "%s %s",
1070                                         xlog_timestamp, oom);
1071                 }
1072         }
1073
1074         return len;
1075 }
1076
1077
1078 static int
1079 vlog_continue(const char *fmt, va_list ap)
1080 {
1081         return weston_log_scope_vprintf(log_scope, fmt, ap);
1082 }
1083
1084 static int
1085 on_term_signal(int signo, void *data)
1086 {
1087         struct wl_display *display = data;
1088
1089         weston_log("caught signal %d\n", signo);
1090         wl_display_terminate(display);
1091
1092         return 1;
1093 }
1094
1095 static void
1096 handle_exit(struct weston_compositor *compositor)
1097 {
1098         wl_display_terminate(compositor->wl_display);
1099 }
1100
1101 static void
1102 usage(int error_code)
1103 {
1104         FILE *out = error_code == EXIT_SUCCESS ? stdout : stderr;
1105         fprintf(out,
1106                 "Usage: agl-compositor [OPTIONS]\n"
1107                 "\n"
1108                 "This is " PACKAGE_STRING ", the reference compositor for\n"
1109                 "Automotive Grade Linux. Weston-ivi supports multiple backends, and depending\n"
1110                 "on which backend is in use different options will be accepted.\n"
1111                 "\n"
1112                 "Core options:\n"
1113                 "\n"
1114                 "  --version\t\tPrint agl-compositor version\n"
1115                 "  -B, --backend=MODULE\tBackend module, one of\n"
1116                         "\t\t\t\tdrm-backend.so\n"
1117                         "\t\t\t\twayland-backend.so\n"
1118                         "\t\t\t\tx11-backend.so\n"
1119                 "  -S, --socket=NAME\tName of socket to listen on\n"
1120                 "  --log=FILE\t\tLog to the given file\n"
1121                 "  -c, --config=FILE\tConfig file to load, defaults to agl-compositor.ini\n"
1122                 "  --no-config\t\tDo not read agl-compositor.ini\n"
1123                 "  --debug\t\tEnable debug extension\n"
1124                 "  -h, --help\t\tThis help message\n"
1125                 "\n");
1126         exit(error_code);
1127 }
1128
1129 static void
1130 ivi_compositor_get_quirks(struct ivi_compositor *ivi)
1131 {
1132         struct weston_config_section *section;
1133
1134         if (!ivi->config)
1135                 return;
1136
1137         section = weston_config_get_section(ivi->config, "shell", NULL, NULL);
1138         weston_config_section_get_bool(section, "activate-by-default",
1139                         &ivi->quirks.activate_apps_by_default, 0);
1140
1141 }
1142
1143 int main(int argc, char *argv[])
1144 {
1145         struct ivi_compositor ivi = { 0 };
1146         struct wl_display *display = NULL;
1147         struct wl_event_loop *loop;
1148         struct wl_event_source *signals[3] = { 0 };
1149         struct weston_config_section *section;
1150         /* Command line options */
1151         char *backend = NULL;
1152         char *socket_name = NULL;
1153         char *log = NULL;
1154         int help = 0;
1155         int version = 0;
1156         int no_config = 0;
1157         char *config_file = NULL;
1158         struct weston_log_context *log_ctx = NULL;
1159         struct weston_log_subscriber *logger;
1160         int ret = EXIT_FAILURE;
1161
1162         const struct weston_option core_options[] = {
1163                 { WESTON_OPTION_STRING, "backend", 'B', &backend },
1164                 { WESTON_OPTION_STRING, "socket", 'S', &socket_name },
1165                 { WESTON_OPTION_STRING, "log", 0, &log },
1166                 { WESTON_OPTION_BOOLEAN, "help", 'h', &help },
1167                 { WESTON_OPTION_BOOLEAN, "version", 0, &version },
1168                 { WESTON_OPTION_BOOLEAN, "no-config", 0, &no_config },
1169                 { WESTON_OPTION_STRING, "config", 'c', &config_file },
1170         };
1171
1172         wl_list_init(&ivi.outputs);
1173         wl_list_init(&ivi.surfaces);
1174         wl_list_init(&ivi.pending_surfaces);
1175         wl_list_init(&ivi.popup_pending_apps);
1176         wl_list_init(&ivi.fullscreen_pending_apps);
1177         wl_list_init(&ivi.split_pending_apps);
1178         wl_list_init(&ivi.desktop_clients);
1179
1180         /* Prevent any clients we spawn getting our stdin */
1181         os_fd_set_cloexec(STDIN_FILENO);
1182
1183         parse_options(core_options, ARRAY_LENGTH(core_options), &argc, argv);
1184
1185         if (help)
1186                 usage(EXIT_SUCCESS);
1187
1188         if (version) {
1189                 printf(PACKAGE_STRING "\n");
1190                 return EXIT_SUCCESS;
1191         }
1192
1193         log_ctx = weston_log_ctx_compositor_create();
1194         if (!log_ctx) {
1195                 fprintf(stderr, "Failed to initialize weston debug framework.\n");
1196                 return ret;
1197         }
1198
1199         log_scope = weston_compositor_add_log_scope(log_ctx, "log",
1200                                                     "agl-compositor log\n",
1201                                                     NULL, NULL, NULL);
1202
1203         log_file_open(log);
1204         weston_log_set_handler(vlog, vlog_continue);
1205
1206         logger = weston_log_subscriber_create_log(logfile);
1207         weston_log_subscribe(log_ctx, logger, "log");
1208
1209         if (load_config(&ivi.config, no_config, config_file) < 0)
1210                 goto error_signals;
1211         section = weston_config_get_section(ivi.config, "core", NULL, NULL);
1212         if (!backend) {
1213                 weston_config_section_get_string(section, "backend", &backend,
1214                                                  NULL);
1215                 if (!backend)
1216                         backend = choose_default_backend();
1217         }
1218
1219         ivi_compositor_get_quirks(&ivi);
1220
1221         display = wl_display_create();
1222         loop = wl_display_get_event_loop(display);
1223
1224         wl_display_set_global_filter(display,
1225                                      global_filter, &ivi);
1226
1227         /* Register signal handlers so we shut down cleanly */
1228
1229         signals[0] = wl_event_loop_add_signal(loop, SIGTERM, on_term_signal,
1230                                               display);
1231         signals[1] = wl_event_loop_add_signal(loop, SIGINT, on_term_signal,
1232                                               display);
1233         signals[2] = wl_event_loop_add_signal(loop, SIGQUIT, on_term_signal,
1234                                               display);
1235
1236         for (size_t i = 0; i < ARRAY_LENGTH(signals); ++i)
1237                 if (!signals[i])
1238                         goto error_signals;
1239
1240         ivi.compositor = weston_compositor_create(display, log_ctx, &ivi);
1241         if (!ivi.compositor) {
1242                 weston_log("fatal: failed to create compositor.\n");
1243                 goto error_signals;
1244         }
1245
1246         if (compositor_init_config(ivi.compositor, ivi.config) < 0)
1247                 goto error_compositor;
1248
1249         if (load_backend(&ivi, backend, &argc, argv) < 0) {
1250                 weston_log("fatal: failed to create compositor backend.\n");
1251                 goto error_compositor;
1252         }
1253
1254         ivi.heads_changed.notify = heads_changed;
1255         weston_compositor_add_heads_changed_listener(ivi.compositor,
1256                                                      &ivi.heads_changed);
1257
1258         if (ivi_desktop_init(&ivi) < 0)
1259                 goto error_compositor;
1260
1261         if (ivi_policy_init(&ivi) < 0)
1262                 goto error_compositor;
1263
1264         if (ivi_shell_init(&ivi) < 0)
1265                 goto error_compositor;
1266
1267         add_bindings(ivi.compositor);
1268
1269         weston_compositor_flush_heads_changed(ivi.compositor);
1270
1271         ivi_shell_init_black_fs(&ivi);
1272
1273         if (create_listening_socket(display, socket_name) < 0)
1274                 goto error_compositor;
1275
1276         ivi.compositor->exit = handle_exit;
1277
1278         weston_compositor_wake(ivi.compositor);
1279
1280         ivi_shell_create_global(&ivi);
1281         ivi_launch_shell_client(&ivi);
1282         ivi_agl_systemd_notify(&ivi);
1283
1284         wl_display_run(display);
1285
1286         ret = ivi.compositor->exit_code;
1287
1288         wl_display_destroy_clients(display);
1289
1290 error_compositor:
1291         weston_compositor_tear_down(ivi.compositor);
1292
1293         weston_compositor_log_scope_destroy(log_scope);
1294         log_scope = NULL;
1295
1296         weston_log_ctx_compositor_destroy(ivi.compositor);
1297         weston_compositor_destroy(ivi.compositor);
1298
1299         weston_log_subscriber_destroy_log(logger);
1300
1301         ivi_policy_destroy(ivi.policy);
1302
1303 error_signals:
1304         for (size_t i = 0; i < ARRAY_LENGTH(signals); ++i)
1305                 if (signals[i])
1306                         wl_event_source_remove(signals[i]);
1307
1308         wl_display_destroy(display);
1309
1310         log_file_close();
1311         if (ivi.config)
1312                 weston_config_destroy(ivi.config);
1313
1314         return ret;
1315 }