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
  28 #include <assert.h>
  29 #include <errno.h>
  30 #include <signal.h>
  31 #include <stdarg.h>
  32 #include <stdbool.h>
  33 #include <stdio.h>
  34 #include <stdlib.h>
  35 #include <string.h>
  36 #include <unistd.h>
  37 #include <linux/input.h>
  38
  39 #include <libweston/backend-drm.h>
  40 #include <libweston/backend-wayland.h>
  41 #ifdef HAVE_BACKEND_X11
  42 #include <libweston/backend-x11.h>
  43 #endif
  44 #include <libweston/libweston.h>
  45 #include <libweston/windowed-output-api.h>
  46 #include <libweston/config-parser.h>
  47 #include <libweston/weston-log.h>
  48
  49 #include "shared/os-compatibility.h"
  50 #include "shared/helpers.h"
  51
  52 #include "agl-shell-server-protocol.h"
  53
  54 struct ivi_compositor *
  55 to_ivi_compositor(struct weston_compositor *ec)
  56 {
  57         return weston_compositor_get_user_data(ec);
  58 }
  59
  60 static void
  61 handle_output_destroy(struct wl_listener *listener, void *data)
  62 {
  63         struct ivi_output *output;
  64
  65         output = wl_container_of(listener, output, output_destroy);
  66         assert(output->output == data);
  67
  68         output->output = NULL;
  69         wl_list_remove(&output->output_destroy.link);
  70 }
  71
  72 struct ivi_output *
  73 to_ivi_output(struct weston_output *o)
  74 {
  75         struct wl_listener *listener;
  76         struct ivi_output *output;
  77
  78         listener = weston_output_get_destroy_listener(o, handle_output_destroy);
  79         output = wl_container_of(listener, output, output_destroy);
  80
  81         return output;
  82 }
  83
  84 static struct ivi_output *
  85 ivi_ensure_output(struct ivi_compositor *ivi, char *name,
  86                   struct weston_config_section *config)
  87 {
  88         struct ivi_output *output = NULL;
  89         wl_list_for_each(output, &ivi->outputs, link) {
  90                 if (strcmp(output->name, name) == 0) {
  91                         free(name);
  92                         return output;
  93                 }
  94         }
  95
  96         output = zalloc(sizeof *output);
  97         if (!output) {
  98                 free(name);
  99                 return NULL;
 100         }
 101
 102         output->ivi = ivi;
 103         output->name = name;
 104         output->config = config;
 105
 106         output->output = weston_compositor_create_output(ivi->compositor, name);
 107         if (!output->output) {
 108                 free(output->name);
 109                 free(output);
 110                 return NULL;
 111         }
 112
 113         output->output_destroy.notify = handle_output_destroy;
 114         weston_output_add_destroy_listener(output->output,
 115                                            &output->output_destroy);
 116
 117         wl_list_insert(&ivi->outputs, &output->link);
 118         return output;
 119 }
 120
 121 static int
 122 count_heads(struct weston_output *output)
 123 {
 124         struct weston_head *iter = NULL;
 125         int n = 0;
 126
 127         while ((iter = weston_output_iterate_heads(output, iter)))
 128                 ++n;
 129
 130         return n;
 131 }
 132
 133 static void
 134 handle_head_destroy(struct wl_listener *listener, void *data)
 135 {
 136         struct weston_head *head = data;
 137         struct weston_output *output;
 138
 139         wl_list_remove(&listener->link);
 140         free(listener);
 141
 142         output = weston_head_get_output(head);
 143
 144         /* On shutdown path, the output might be already gone. */
 145         if (!output)
 146                 return;
 147
 148         /* We're the last head */
 149         if (count_heads(output) <= 1)
 150                 weston_output_destroy(output);
 151 }
 152
 153 static void
 154 add_head_destroyed_listener(struct weston_head *head)
 155 {
 156         /* We already have a destroy listener */
 157         if (weston_head_get_destroy_listener(head, handle_head_destroy))
 158                 return;
 159
 160         struct wl_listener *listener = zalloc(sizeof *listener);
 161         if (!listener)
 162                 return;
 163
 164         listener->notify = handle_head_destroy;
 165         weston_head_add_destroy_listener(head, listener);
 166 }
 167
 168 static int
 169 drm_configure_output(struct ivi_output *output)
 170 {
 171         struct ivi_compositor *ivi = output->ivi;
 172         struct weston_config_section *section = output->config;
 173         enum weston_drm_backend_output_mode mode =
 174                 WESTON_DRM_BACKEND_OUTPUT_PREFERRED;
 175         char *modeline = NULL;
 176         char *gbm_format = NULL;
 177         char *seat = NULL;
 178
 179         if (section) {
 180                 char *m;
 181                 weston_config_section_get_string(section, "mode", &m, "preferred");
 182
 183                 /* This should have been handled earlier */
 184                 assert(strcmp(m, "off") != 0);
 185
 186                 if (ivi->cmdline.use_current_mode || strcmp(m, "current") == 0) {
 187                         mode = WESTON_DRM_BACKEND_OUTPUT_CURRENT;
 188                 } else if (strcmp(m, "preferred") != 0) {
 189                         modeline = m;
 190                         m = NULL;
 191                 }
 192                 free(m);
 193
 194                 weston_config_section_get_string(section, "gbm-format",
 195                                                  &gbm_format, NULL);
 196
 197                 weston_config_section_get_string(section, "seat", &seat, "");
 198         }
 199
 200         if (ivi->drm_api->set_mode(output->output, mode, modeline) < 0) {
 201                 weston_log("Cannot configure output using weston_drm_output_api.\n");
 202                 free(modeline);
 203                 return -1;
 204         }
 205         free(modeline);
 206
 207         ivi->drm_api->set_gbm_format(output->output, gbm_format);
 208         free(gbm_format);
 209
 210         ivi->drm_api->set_seat(output->output, seat);
 211         free(seat);
 212
 213         return 0;
 214 }
 215
 216 #define WINDOWED_DEFAULT_WIDTH 1024
 217 #define WINDOWED_DEFAULT_HEIGHT 768
 218
 219 static int
 220 windowed_configure_output(struct ivi_output *output)
 221 {
 222         struct ivi_compositor *ivi = output->ivi;
 223         struct weston_config_section *section = output->config;
 224         int width = WINDOWED_DEFAULT_WIDTH;
 225         int height = WINDOWED_DEFAULT_HEIGHT;
 226
 227         if (section) {
 228                 char *mode;
 229
 230                 weston_config_section_get_string(section, "mode", &mode, NULL);
 231                 if (!mode || sscanf(mode, "%dx%d", &width, &height) != 2) {
 232                         weston_log("Invalid mode for output %s. Using defaults.\n",
 233                                    output->name);
 234                         width = WINDOWED_DEFAULT_WIDTH;
 235                         height = WINDOWED_DEFAULT_HEIGHT;
 236                 }
 237                 free(mode);
 238         }
 239
 240         if (ivi->cmdline.width)
 241                 width = ivi->cmdline.width;
 242         if (ivi->cmdline.height)
 243                 height = ivi->cmdline.height;
 244         if (ivi->cmdline.scale)
 245                 weston_output_set_scale(output->output, ivi->cmdline.scale);
 246
 247         if (ivi->window_api->output_set_size(output->output, width, height) < 0) {
 248                 weston_log("Cannot configure output '%s' using weston_windowed_output_api.\n",
 249                            output->name);
 250                 return -1;
 251         }
 252
 253         return 0;
 254 }
 255
 256 static int
 257 parse_transform(const char *transform, uint32_t *out)
 258 {
 259         static const struct { const char *name; uint32_t token; } transforms[] = {
 260                 { "normal",     WL_OUTPUT_TRANSFORM_NORMAL },
 261                 { "90",         WL_OUTPUT_TRANSFORM_90 },
 262                 { "180",        WL_OUTPUT_TRANSFORM_180 },
 263                 { "270",        WL_OUTPUT_TRANSFORM_270 },
 264                 { "flipped",    WL_OUTPUT_TRANSFORM_FLIPPED },
 265                 { "flipped-90", WL_OUTPUT_TRANSFORM_FLIPPED_90 },
 266                 { "flipped-180", WL_OUTPUT_TRANSFORM_FLIPPED_180 },
 267                 { "flipped-270", WL_OUTPUT_TRANSFORM_FLIPPED_270 },
 268         };
 269
 270         for (size_t i = 0; i < ARRAY_LENGTH(transforms); i++)
 271                 if (strcmp(transforms[i].name, transform) == 0) {
 272                         *out = transforms[i].token;
 273                         return 0;
 274                 }
 275
 276         *out = WL_OUTPUT_TRANSFORM_NORMAL;
 277         return -1;
 278 }
 279
 280 static int
 281 configure_output(struct ivi_output *output)
 282 {
 283         struct ivi_compositor *ivi = output->ivi;
 284         struct weston_config_section *section = output->config;
 285         int32_t scale = 1;
 286         uint32_t transform = WL_OUTPUT_TRANSFORM_NORMAL;
 287
 288         /*
 289          * This can happen with the wayland backend with 'sprawl'. The config
 290          * is hard-coded, so we don't need to do anything.
 291          */
 292         if (!ivi->drm_api && !ivi->window_api)
 293                 return 0;
 294
 295         if (section) {
 296                 char *t;
 297
 298                 weston_config_section_get_int(section, "scale", &scale, 1);
 299                 weston_config_section_get_string(section, "transform", &t, "normal");
 300                 if (parse_transform(t, &transform) < 0)
 301                         weston_log("Invalid transform \"%s\" for output %s\n",
 302                                    t, output->name);
 303                 free(t);
 304         }
 305
 306         weston_output_set_scale(output->output, scale);
 307         weston_output_set_transform(output->output, transform);
 308
 309         if (ivi->drm_api)
 310                 return drm_configure_output(output);
 311         else
 312                 return windowed_configure_output(output);
 313 }
 314
 315 /*
 316  * Reorgainizes the output's add array into two sections.
 317  * add[0..ret-1] are the heads that failed to get attached.
 318  * add[ret..add_len] are the heads that were successfully attached.
 319  *
 320  * The order between elements in each section is stable.
 321  */
 322 static size_t
 323 try_attach_heads(struct ivi_output *output)
 324 {
 325         size_t fail_len = 0;
 326
 327         for (size_t i = 0; i < output->add_len; ++i) {
 328                 if (weston_output_attach_head(output->output, output->add[i]) < 0) {
 329                         struct weston_head *tmp = output->add[i];
 330                         memmove(&output->add[fail_len + 1], output->add[fail_len],
 331                                 sizeof output->add[0] * (i - fail_len));
 332                         output->add[fail_len++] = tmp;
 333                 }
 334         }
 335
 336         return fail_len;
 337 }
 338
 339 /*
 340  * Like try_attach_heads, this reorganizes the output's add array into a failed
 341  * and successful section.
 342  * i is the number of heads that already failed the previous step.
 343  */
 344 static size_t
 345 try_enable_output(struct ivi_output *output, size_t i)
 346 {
 347         for (; i < output->add_len; ++i) {
 348                 struct weston_head *head;
 349
 350                 if (weston_output_enable(output->output) == 0)
 351                         break;
 352
 353                 head = output->add[output->add_len - 1];
 354                 memmove(&output->add[i + 1], &output->add[i],
 355                         sizeof output->add[0] * (output->add_len - i));
 356                 output->add[i] = head;
 357
 358                 weston_head_detach(head);
 359         }
 360
 361         return i;
 362 }
 363
 364 static int
 365 try_attach_enable_heads(struct ivi_output *output)
 366 {
 367         size_t fail_len;
 368         assert(!output->output->enabled);
 369
 370         fail_len = try_attach_heads(output);
 371
 372         if (configure_output(output) < 0)
 373                 return -1;
 374
 375         fail_len = try_enable_output(output, fail_len);
 376
 377         /* All heads failed to be attached */
 378         if (fail_len == output->add_len)
 379                 return -1;
 380
 381         /* For each successful head attached */
 382         for (size_t i = fail_len; i < output->add_len; ++i)
 383                 add_head_destroyed_listener(output->add[i]);
 384
 385         output->add_len = fail_len;
 386         return 0;
 387 }
 388
 389 static int
 390 process_output(struct ivi_output *output)
 391 {
 392         if (output->output->enabled) {
 393                 output->add_len = try_attach_heads(output);
 394                 return output->add_len == 0 ? 0 : -1;
 395         }
 396
 397         return try_attach_enable_heads(output);
 398 }
 399
 400 static void
 401 head_disable(struct ivi_compositor *ivi, struct weston_head *head)
 402 {
 403         struct weston_output *output;
 404         struct ivi_output *ivi_output;
 405         struct wl_listener *listener;
 406
 407         output = weston_head_get_output(head);
 408         assert(output);
 409
 410         listener = weston_output_get_destroy_listener(output,
 411                                                       handle_output_destroy);
 412         assert(listener);
 413
 414         ivi_output = wl_container_of(listener, ivi_output, output_destroy);
 415         assert(ivi_output->output == output);
 416
 417         weston_head_detach(head);
 418         if (count_heads(ivi_output->output) == 0) {
 419                 weston_output_disable(ivi_output->output);
 420         }
 421 }
 422
 423 static struct weston_config_section *
 424 find_controlling_output_config(struct weston_config *config,
 425                                const char *name)
 426 {
 427         struct weston_config_section *section;
 428         char *same_as;
 429         int depth = 0;
 430
 431         same_as = strdup(name);
 432         do {
 433                 section = weston_config_get_section(config, "output",
 434                                                     "name", same_as);
 435                 if (!section && depth > 0)
 436                         weston_log("Configuration error: output section reffered"
 437                                    "to by same-as=%s not found.\n", same_as);
 438                 free(same_as);
 439
 440                 if (!section)
 441                         return NULL;
 442
 443                 if (depth++ > 8) {
 444                         weston_log("Configuration error: same-as nested too "
 445                                    "deep for output '%s'.\n", name);
 446                         return NULL;
 447                 }
 448
 449                 weston_config_section_get_string(section, "same-as",
 450                                                  &same_as, NULL);
 451         } while (same_as);
 452
 453         return section;
 454 }
 455
 456 static void
 457 head_prepare_enable(struct ivi_compositor *ivi, struct weston_head *head)
 458 {
 459         const char *name = weston_head_get_name(head);
 460         struct weston_config_section *section;
 461         struct ivi_output *output;
 462         char *output_name = NULL;
 463
 464         section = find_controlling_output_config(ivi->config, name);
 465         if (section) {
 466                 char *mode;
 467
 468                 weston_config_section_get_string(section, "mode", &mode, NULL);
 469                 if (mode && strcmp(mode, "off") == 0) {
 470                         free(mode);
 471                         return;
 472                 }
 473                 free(mode);
 474
 475                 weston_config_section_get_string(section, "name",
 476                                                  &output_name, NULL);
 477         } else {
 478                 output_name = strdup(name);
 479         }
 480
 481         if (!output_name)
 482                 return;
 483
 484         output = ivi_ensure_output(ivi, output_name, section);
 485         if (!output)
 486                 return;
 487
 488         if (output->add_len >= ARRAY_LENGTH(output->add))
 489                 return;
 490
 491         output->add[output->add_len++] = head;
 492 }
 493
 494 static void
 495 heads_changed(struct wl_listener *listener, void *arg)
 496 {
 497         struct weston_compositor *compositor = arg;
 498         struct weston_head *head = NULL;
 499         struct ivi_compositor *ivi = to_ivi_compositor(compositor);
 500         struct ivi_output *output;
 501
 502         while ((head = weston_compositor_iterate_heads(ivi->compositor, head))) {
 503                 bool connected = weston_head_is_connected(head);
 504                 bool enabled = weston_head_is_enabled(head);
 505                 bool changed = weston_head_is_device_changed(head);
 506                 bool non_desktop = weston_head_is_non_desktop(head);
 507
 508                 if (connected && !enabled && !non_desktop)
 509                         head_prepare_enable(ivi, head);
 510                 else if (!connected && enabled)
 511                         head_disable(ivi, head);
 512                 else if (enabled && changed)
 513                         weston_log("Detected a monitor change on head '%s', "
 514                                    "not bothering to do anything about it.\n",
 515                                    weston_head_get_name(head));
 516
 517                 weston_head_reset_device_changed(head);
 518         }
 519
 520         wl_list_for_each(output, &ivi->outputs, link) {
 521                 if (output->add_len == 0)
 522                         continue;
 523
 524                 if (process_output(output) < 0) {
 525                         output->add_len = 0;
 526                         ivi->init_failed = true;
 527                 }
 528         }
 529 }
 530
 531 static int
 532 load_drm_backend(struct ivi_compositor *ivi, int *argc, char *argv[])
 533 {
 534         struct weston_drm_backend_config config = {
 535                 .base = {
 536                         .struct_version = WESTON_DRM_BACKEND_CONFIG_VERSION,
 537                         .struct_size = sizeof config,
 538                 },
 539         };
 540         struct weston_config_section *section;
 541         int use_current_mode = 0;
 542         int use_pixman = 0;
 543         int use_shadow;
 544         int ret;
 545
 546         const struct weston_option options[] = {
 547                 { WESTON_OPTION_STRING, "seat", 0, &config.seat_id },
 548                 { WESTON_OPTION_INTEGER, "tty", 0, &config.tty },
 549                 { WESTON_OPTION_STRING, "drm-device", 0, &config.specific_device },
 550                 { WESTON_OPTION_BOOLEAN, "current-mode", 0, &use_current_mode },
 551                 { WESTON_OPTION_BOOLEAN, "use-pixman", 0, &use_pixman },
 552         };
 553
 554         parse_options(options, ARRAY_LENGTH(options), argc, argv);
 555         config.use_pixman = use_pixman;
 556         ivi->cmdline.use_current_mode = use_current_mode;
 557
 558         section = weston_config_get_section(ivi->config, "core", NULL, NULL);
 559         weston_config_section_get_string(section, "gbm-format",
 560                                          &config.gbm_format, NULL);
 561         weston_config_section_get_uint(section, "pageflip-timeout",
 562                                        &config.pageflip_timeout, 0);
 563         weston_config_section_get_bool(section, "pixman-shadow", &use_shadow, 1);
 564         config.use_pixman_shadow = use_shadow;
 565
 566         ret = weston_compositor_load_backend(ivi->compositor, WESTON_BACKEND_DRM,
 567                                              &config.base);
 568         if (ret < 0)
 569                 return ret;
 570
 571         ivi->drm_api = weston_drm_output_get_api(ivi->compositor);
 572         if (!ivi->drm_api) {
 573                 weston_log("Cannot use drm output api.\n");
 574                 ret = -1;
 575                 goto error;
 576         }
 577
 578 error:
 579         free(config.gbm_format);
 580         free(config.seat_id);
 581         return ret;
 582 }
 583
 584 static void
 585 windowed_parse_common_options(struct ivi_compositor *ivi, int *argc, char *argv[],
 586                               bool *use_pixman, bool *fullscreen, int *output_count)
 587 {
 588         struct weston_config_section *section;
 589         int pixman;
 590         int fs = 0;
 591
 592         const struct weston_option options[] = {
 593                 { WESTON_OPTION_INTEGER, "width", 0, &ivi->cmdline.width },
 594                 { WESTON_OPTION_INTEGER, "height", 0, &ivi->cmdline.height },
 595                 { WESTON_OPTION_INTEGER, "scale", 0, &ivi->cmdline.scale },
 596                 { WESTON_OPTION_BOOLEAN, "use-pixman", 0, &pixman },
 597                 { WESTON_OPTION_BOOLEAN, "fullscreen", 0, &fs },
 598                 { WESTON_OPTION_INTEGER, "output-count", 0, output_count },
 599         };
 600
 601         section = weston_config_get_section(ivi->config, "core", NULL, NULL);
 602         weston_config_section_get_bool(section, "use-pixman", &pixman, 0);
 603
 604         *output_count = 1;
 605         parse_options(options, ARRAY_LENGTH(options), argc, argv);
 606         *use_pixman = pixman;
 607         *fullscreen = fs;
 608 }
 609
 610 static int
 611 windowed_create_outputs(struct ivi_compositor *ivi, int output_count,
 612                         const char *match_prefix, const char *name_prefix)
 613 {
 614         struct weston_config_section *section = NULL;
 615         const char *section_name;
 616         char *default_output = NULL;
 617         int i = 0;
 618         size_t match_len = strlen(match_prefix);
 619
 620         while (weston_config_next_section(ivi->config, &section, &section_name)) {
 621                 char *output_name;
 622
 623                 if (i >= output_count)
 624                         break;
 625
 626                 if (strcmp(section_name, "output") != 0)
 627                         continue;
 628
 629                 weston_config_section_get_string(section, "name", &output_name, NULL);
 630                 if (output_name == NULL)
 631                         continue;
 632                 if (strncmp(output_name, match_prefix, match_len) != 0) {
 633                         free(output_name);
 634                         continue;
 635                 }
 636
 637                 if (ivi->window_api->create_head(ivi->compositor, output_name) < 0) {
 638                         free(output_name);
 639                         return -1;
 640                 }
 641
 642                 free(output_name);
 643                 ++i;
 644         }
 645
 646         for (; i < output_count; ++i) {
 647                 if (asprintf(&default_output, "%s%d", name_prefix, i) < 0)
 648                         return -1;
 649
 650                 if (ivi->window_api->create_head(ivi->compositor, default_output) < 0) {
 651                         free(default_output);
 652                         return -1;
 653                 }
 654
 655                 free(default_output);
 656         }
 657
 658         return 0;
 659 }
 660
 661 static int
 662 load_wayland_backend(struct ivi_compositor *ivi, int *argc, char *argv[])
 663 {
 664         struct weston_wayland_backend_config config = {
 665                 .base = {
 666                         .struct_version = WESTON_WAYLAND_BACKEND_CONFIG_VERSION,
 667                         .struct_size = sizeof config,
 668                 },
 669         };
 670         struct weston_config_section *section;
 671         int sprawl = 0;
 672         int output_count;
 673         int ret;
 674
 675         const struct weston_option options[] = {
 676                 { WESTON_OPTION_STRING, "display", 0, &config.display_name },
 677                 { WESTON_OPTION_STRING, "sprawl", 0, &sprawl },
 678         };
 679
 680         windowed_parse_common_options(ivi, argc, argv, &config.use_pixman,
 681                                       &config.fullscreen, &output_count);
 682
 683         parse_options(options, ARRAY_LENGTH(options), argc, argv);
 684         config.sprawl = sprawl;
 685
 686         section = weston_config_get_section(ivi->config, "shell", NULL, NULL);
 687         weston_config_section_get_string(section, "cursor-theme",
 688                                          &config.cursor_theme, NULL);
 689         weston_config_section_get_int(section, "cursor-size",
 690                                       &config.cursor_size, 32);
 691
 692         ret = weston_compositor_load_backend(ivi->compositor, WESTON_BACKEND_WAYLAND,
 693                                              &config.base);
 694
 695         free(config.cursor_theme);
 696         free(config.display_name);
 697
 698         if (ret < 0)
 699                 return ret;
 700
 701         ivi->window_api = weston_windowed_output_get_api(ivi->compositor);
 702
 703         /*
 704          * We will just assume if load_backend() finished cleanly and
 705          * windowed_output_api is not present that wayland backend is started
 706          * with --sprawl or runs on fullscreen-shell. In this case, all values
 707          * are hardcoded, so nothing can be configured; simply create and
 708          * enable an output.
 709          */
 710         if (ivi->window_api == NULL)
 711                 return 0;
 712
 713         return windowed_create_outputs(ivi, output_count, "WL", "wayland");
 714 }
 715
 716 #ifdef HAVE_BACKEND_X11
 717 static int
 718 load_x11_backend(struct ivi_compositor *ivi, int *argc, char *argv[])
 719 {
 720         struct weston_x11_backend_config config = {
 721                 .base = {
 722                         .struct_version = WESTON_X11_BACKEND_CONFIG_VERSION,
 723                         .struct_size = sizeof config,
 724                 },
 725         };
 726         int no_input = 0;
 727         int output_count;
 728         int ret;
 729
 730         const struct weston_option options[] = {
 731                { WESTON_OPTION_BOOLEAN, "no-input", 0, &no_input },
 732         };
 733
 734         windowed_parse_common_options(ivi, argc, argv, &config.use_pixman,
 735                                       &config.fullscreen, &output_count);
 736
 737         parse_options(options, ARRAY_LENGTH(options), argc, argv);
 738         config.no_input = no_input;
 739
 740         ret = weston_compositor_load_backend(ivi->compositor, WESTON_BACKEND_X11,
 741                                              &config.base);
 742
 743         if (ret < 0)
 744                 return ret;
 745
 746         ivi->window_api = weston_windowed_output_get_api(ivi->compositor);
 747         if (!ivi->window_api) {
 748                 weston_log("Cannot use weston_windowed_output_api.\n");
 749                 return -1;
 750         }
 751
 752         return windowed_create_outputs(ivi, output_count, "X", "screen");
 753 }
 754 #else
 755 static int
 756 load_x11_backend(struct ivi_compositor *ivi, int *argc, char *argv[])
 757 {
 758         return -1;
 759 }
 760 #endif
 761
 762 static int
 763 load_backend(struct ivi_compositor *ivi, const char *backend,
 764              int *argc, char *argv[])
 765 {
 766         if (strcmp(backend, "drm-backend.so") == 0) {
 767                 return load_drm_backend(ivi, argc, argv);
 768         } else if (strcmp(backend, "wayland-backend.so") == 0) {
 769                 return load_wayland_backend(ivi, argc, argv);
 770         } else if (strcmp(backend, "x11-backend.so") == 0) {
 771                 return load_x11_backend(ivi, argc, argv);
 772         }
 773
 774         weston_log("fatal: unknown backend '%s'.\n", backend);
 775         return -1;
 776 }
 777
 778 static char *
 779 choose_default_backend(void)
 780 {
 781         char *backend = NULL;
 782
 783         if (getenv("WAYLAND_DISPLAY") || getenv("WAYLAND_SOCKET"))
 784                 backend = strdup("wayland-backend.so");
 785         else if (getenv("DISPLAY"))
 786                 backend = strdup("x11-backend.so");
 787         else
 788                 backend = strdup("drm-backend.so");
 789
 790         return backend;
 791 }
 792
 793 static int
 794 compositor_init_config(struct weston_compositor *compositor,
 795                        struct weston_config *config)
 796 {
 797         struct xkb_rule_names xkb_names;
 798         struct weston_config_section *section;
 799         int repaint_msec;
 800         int vt_switching;
 801         int require_input;
 802
 803         /* agl-compositor.ini [keyboard] */
 804         section = weston_config_get_section(config, "keyboard", NULL, NULL);
 805         weston_config_section_get_string(section, "keymap_rules",
 806                                          (char **) &xkb_names.rules, NULL);
 807         weston_config_section_get_string(section, "keymap_model",
 808                                          (char **) &xkb_names.model, NULL);
 809         weston_config_section_get_string(section, "keymap_layout",
 810                                          (char **) &xkb_names.layout, NULL);
 811         weston_config_section_get_string(section, "keymap_variant",
 812                                          (char **) &xkb_names.variant, NULL);
 813         weston_config_section_get_string(section, "keymap_options",
 814                                          (char **) &xkb_names.options, NULL);
 815
 816         if (weston_compositor_set_xkb_rule_names(compositor, &xkb_names) < 0)
 817                 return -1;
 818
 819         weston_config_section_get_int(section, "repeat-rate",
 820                                       &compositor->kb_repeat_rate, 40);
 821         weston_config_section_get_int(section, "repeat-delay",
 822                                       &compositor->kb_repeat_delay, 400);
 823
 824         weston_config_section_get_bool(section, "vt-switching",
 825                                        &vt_switching, true);
 826         compositor->vt_switching = vt_switching;
 827
 828         /* agl-compositor.ini [core] */
 829         section = weston_config_get_section(config, "core", NULL, NULL);
 830
 831         weston_config_section_get_bool(section, "require-input", &require_input, true);
 832         compositor->require_input = require_input;
 833
 834         weston_config_section_get_int(section, "repaint-window", &repaint_msec,
 835                                       compositor->repaint_msec);
 836         if (repaint_msec < -10 || repaint_msec > 1000) {
 837                 weston_log("Invalid repaint_window value in config: %d\n",
 838                            repaint_msec);
 839         } else {
 840                 compositor->repaint_msec = repaint_msec;
 841         }
 842         weston_log("Output repaint window is %d ms maximum.\n",
 843                    compositor->repaint_msec);
 844
 845         return 0;
 846 }
 847
 848 struct ivi_surface *
 849 to_ivi_surface(struct weston_surface *surface)
 850 {
 851         struct weston_desktop_surface *dsurface;
 852
 853         dsurface = weston_surface_get_desktop_surface(surface);
 854         if (!dsurface)
 855                 return NULL;
 856
 857         return weston_desktop_surface_get_user_data(dsurface);
 858 }
 859
 860 static void
 861 activate_binding(struct weston_seat *seat,
 862                  struct weston_view *focus_view)
 863 {
 864         struct weston_surface *focus = focus_view->surface;
 865         struct weston_surface *main_surface =
 866                 weston_surface_get_main_surface(focus);
 867         struct ivi_surface *surface;
 868
 869         surface = to_ivi_surface(main_surface);
 870         if (!surface)
 871                 return;
 872
 873         weston_seat_set_keyboard_focus(seat, focus);
 874 }
 875
 876 static void
 877 click_to_activate_binding(struct weston_pointer *pointer,
 878                           const struct timespec *time,
 879                           uint32_t button, void *data)
 880 {
 881         if (pointer->grab != &pointer->default_grab)
 882                 return;
 883         if (pointer->focus == NULL)
 884                 return;
 885
 886         activate_binding(pointer->seat, pointer->focus);
 887 }
 888
 889 static void
 890 touch_to_activate_binding(struct weston_touch *touch,
 891                           const struct timespec *time,
 892                           void *data)
 893 {
 894         if (touch->grab != &touch->default_grab)
 895                 return;
 896         if (touch->focus == NULL)
 897                 return;
 898
 899         activate_binding(touch->seat, touch->focus);
 900 }
 901
 902 static void
 903 add_bindings(struct weston_compositor *compositor)
 904 {
 905         weston_compositor_add_button_binding(compositor, BTN_LEFT, 0,
 906                                              click_to_activate_binding,
 907                                              NULL);
 908         weston_compositor_add_button_binding(compositor, BTN_RIGHT, 0,
 909                                              click_to_activate_binding,
 910                                              NULL);
 911         weston_compositor_add_touch_binding(compositor, 0,
 912                                             touch_to_activate_binding,
 913                                             NULL);
 914 }
 915
 916 static int
 917 create_listening_socket(struct wl_display *display, const char *socket_name)
 918 {
 919         if (socket_name) {
 920                 if (wl_display_add_socket(display, socket_name)) {
 921                         weston_log("fatal: failed to add socket: %s\n",
 922                                    strerror(errno));
 923                         return -1;
 924                 }
 925         } else {
 926                 socket_name = wl_display_add_socket_auto(display);
 927                 if (!socket_name) {
 928                         weston_log("fatal: failed to add socket: %s\n",
 929                                    strerror(errno));
 930                         return -1;
 931                 }
 932         }
 933
 934         setenv("WAYLAND_DISPLAY", socket_name, 1);
 935
 936         return 0;
 937 }
 938
 939 static bool
 940 global_filter(const struct wl_client *client, const struct wl_global *global,
 941               void *data)
 942 {
 943         return true;
 944 }
 945
 946 static int
 947 load_config(struct weston_config **config, bool no_config,
 948             const char *config_file)
 949 {
 950         const char *file = "agl-compositor.ini";
 951         const char *full_path;
 952
 953         if (config_file)
 954                 file = config_file;
 955
 956         if (!no_config)
 957                 *config = weston_config_parse(file);
 958
 959         if (*config) {
 960                 full_path = weston_config_get_full_path(*config);
 961
 962                 weston_log("Using config file '%s'.\n", full_path);
 963                 setenv(WESTON_CONFIG_FILE_ENV_VAR, full_path, 1);
 964
 965                 return 0;
 966         }
 967
 968         if (config_file && !no_config) {
 969                 weston_log("fatal: error opening or reading config file '%s'.\n",
 970                         config_file);
 971
 972                 return -1;
 973         }
 974
 975         weston_log("Starting with no config file.\n");
 976         setenv(WESTON_CONFIG_FILE_ENV_VAR, "", 1);
 977
 978         return 0;
 979 }
 980
 981 static FILE *logfile;
 982
 983 static int
 984 log_timestamp(void)
 985 {
 986         static int cached_tm_mday = -1;
 987         struct timespec ts;
 988         struct tm brokendown_time;
 989         char buf[128];
 990
 991         clock_gettime(CLOCK_REALTIME, &ts);
 992         if (!localtime_r(&ts.tv_sec, &brokendown_time))
 993                 return fprintf(logfile, "[(NULL)localtime] ");
 994
 995         if (brokendown_time.tm_mday != cached_tm_mday) {
 996                 strftime(buf, sizeof buf, "%Y-%m-%d %Z", &brokendown_time);
 997                 fprintf(logfile, "Date: %s\n", buf);
 998
 999                 cached_tm_mday = brokendown_time.tm_mday;
1000         }
1001
1002         strftime(buf, sizeof buf, "%H:%M:%S", &brokendown_time);
1003
1004         return fprintf(logfile, "[%s.%03ld] ", buf, ts.tv_nsec / 1000000);
1005 }
1006
1007 static void
1008 custom_handler(const char *fmt, va_list arg)
1009 {
1010         log_timestamp();
1011         fprintf(logfile, "libwayland: ");
1012         vfprintf(logfile, fmt, arg);
1013 }
1014
1015 static void
1016 log_file_open(const char *filename)
1017 {
1018         wl_log_set_handler_server(custom_handler);
1019
1020         if (filename)
1021                 logfile = fopen(filename, "a");
1022
1023         if (!logfile) {
1024                 logfile = stderr;
1025         } else {
1026                 os_fd_set_cloexec(fileno(logfile));
1027                 setvbuf(logfile, NULL, _IOLBF, 256);
1028         }
1029 }
1030
1031 static void
1032 log_file_close(void)
1033 {
1034         if (logfile && logfile != stderr)
1035                 fclose(logfile);
1036         logfile = stderr;
1037 }
1038
1039 static int
1040 vlog(const char *fmt, va_list ap)
1041 {
1042         int l;
1043
1044         l = log_timestamp();
1045         l += vfprintf(logfile, fmt, ap);
1046
1047         return l;
1048 }
1049
1050 static int
1051 vlog_continue(const char *fmt, va_list ap)
1052 {
1053         return vfprintf(logfile, fmt, ap);
1054 }
1055
1056 static int
1057 on_term_signal(int signo, void *data)
1058 {
1059         struct wl_display *display = data;
1060
1061         weston_log("caught signal %d\n", signo);
1062         wl_display_terminate(display);
1063
1064         return 1;
1065 }
1066
1067 static void
1068 handle_exit(struct weston_compositor *compositor)
1069 {
1070         wl_display_terminate(compositor->wl_display);
1071 }
1072
1073 static void
1074 usage(int error_code)
1075 {
1076         FILE *out = error_code == EXIT_SUCCESS ? stdout : stderr;
1077         fprintf(out,
1078                 "Usage: agl-compositor [OPTIONS]\n"
1079                 "\n"
1080                 "This is " PACKAGE_STRING ", the reference compositor for\n"
1081                 "Automotive Grade Linux. Weston-ivi supports multiple backends, and depending\n"
1082                 "on which backend is in use different options will be accepted.\n"
1083                 "\n"
1084                 "Core options:\n"
1085                 "\n"
1086                 "  --version\t\tPrint agl-compositor version\n"
1087                 "  -B, --backend=MODULE\tBackend module, one of\n"
1088                         "\t\t\t\tdrm-backend.so\n"
1089                         "\t\t\t\twayland-backend.so\n"
1090                         "\t\t\t\tx11-backend.so\n"
1091                 "  -S, --socket=NAME\tName of socket to listen on\n"
1092                 "  --log=FILE\t\tLog to the given file\n"
1093                 "  -c, --config=FILE\tConfig file to load, defaults to agl-compositor.ini\n"
1094                 "  --no-config\t\tDo not read agl-compositor.ini\n"
1095                 "  --debug\t\tEnable debug extension\n"
1096                 "  -h, --help\t\tThis help message\n"
1097                 "\n");
1098         exit(error_code);
1099 }
1100
1101 static void
1102 ivi_compositor_get_quirks(struct ivi_compositor *ivi)
1103 {
1104         struct weston_config_section *section;
1105
1106         if (!ivi->config)
1107                 return;
1108
1109         section = weston_config_get_section(ivi->config, "shell", NULL, NULL);
1110         weston_config_section_get_bool(section, "activate-by-default",
1111                         &ivi->quirks.activate_apps_by_default, 0);
1112
1113 }
1114
1115 int main(int argc, char *argv[])
1116 {
1117         struct ivi_compositor ivi = { 0 };
1118         struct wl_display *display = NULL;
1119         struct wl_event_loop *loop;
1120         struct wl_event_source *signals[3] = { 0 };
1121         struct weston_config_section *section;
1122         /* Command line options */
1123         char *backend = NULL;
1124         char *socket_name = NULL;
1125         char *log = NULL;
1126         int help = 0;
1127         int version = 0;
1128         int no_config = 0;
1129         char *config_file = NULL;
1130         int debug_protocol = 0;
1131         struct weston_log_context *log_ctx = NULL;
1132         struct weston_log_scope *log_scope;
1133         struct weston_log_subscriber *logger;
1134
1135         const struct weston_option core_options[] = {
1136                 { WESTON_OPTION_STRING, "backend", 'B', &backend },
1137                 { WESTON_OPTION_STRING, "socket", 'S', &socket_name },
1138                 { WESTON_OPTION_STRING, "log", 0, &log },
1139                 { WESTON_OPTION_BOOLEAN, "help", 'h', &help },
1140                 { WESTON_OPTION_BOOLEAN, "version", 0, &version },
1141                 { WESTON_OPTION_BOOLEAN, "no-config", 0, &no_config },
1142                 { WESTON_OPTION_STRING, "config", 'c', &config_file },
1143                 { WESTON_OPTION_BOOLEAN, "debug", 0, &debug_protocol },
1144         };
1145
1146         wl_list_init(&ivi.outputs);
1147         wl_list_init(&ivi.surfaces);
1148         wl_list_init(&ivi.pending_surfaces);
1149         wl_list_init(&ivi.desktop_clients);
1150
1151         /* Prevent any clients we spawn getting our stdin */
1152         os_fd_set_cloexec(STDIN_FILENO);
1153
1154         parse_options(core_options, ARRAY_LENGTH(core_options), &argc, argv);
1155
1156         if (help)
1157                 usage(EXIT_SUCCESS);
1158
1159         if (version) {
1160                 printf(PACKAGE_STRING "\n");
1161                 return EXIT_SUCCESS;
1162         }
1163
1164         log_ctx = weston_log_ctx_compositor_create();
1165         if (!log_ctx) {
1166                 fprintf(stderr, "Failed to initialize weston debug framework.\n");
1167                 return EXIT_FAILURE;
1168         }
1169
1170         log_scope = weston_compositor_add_log_scope(log_ctx, "log",
1171                                                     "agl-compositor log\n",
1172                                                     NULL, NULL);
1173
1174         log_file_open(log);
1175         weston_log_set_handler(vlog, vlog_continue);
1176
1177         logger = weston_log_subscriber_create_log(logfile);
1178
1179         if (load_config(&ivi.config, no_config, config_file) < 0)
1180                 goto error_signals;
1181         section = weston_config_get_section(ivi.config, "core", NULL, NULL);
1182         if (!backend) {
1183                 weston_config_section_get_string(section, "backend", &backend,
1184                                                  NULL);
1185                 if (!backend)
1186                         backend = choose_default_backend();
1187         }
1188
1189         ivi_compositor_get_quirks(&ivi);
1190
1191         display = wl_display_create();
1192         loop = wl_display_get_event_loop(display);
1193
1194         wl_display_set_global_filter(display,
1195                                      global_filter, &ivi);
1196
1197         /* Register signal handlers so we shut down cleanly */
1198
1199         signals[0] = wl_event_loop_add_signal(loop, SIGTERM, on_term_signal,
1200                                               display);
1201         signals[1] = wl_event_loop_add_signal(loop, SIGINT, on_term_signal,
1202                                               display);
1203         signals[2] = wl_event_loop_add_signal(loop, SIGQUIT, on_term_signal,
1204                                               display);
1205
1206         for (size_t i = 0; i < ARRAY_LENGTH(signals); ++i)
1207                 if (!signals[i])
1208                         goto error_signals;
1209
1210         ivi.compositor = weston_compositor_create(display, log_ctx, &ivi);
1211         if (!ivi.compositor) {
1212                 weston_log("fatal: failed to create compositor.\n");
1213                 goto error_signals;
1214         }
1215
1216         if (compositor_init_config(ivi.compositor, ivi.config) < 0)
1217                 goto error_compositor;
1218
1219         if (load_backend(&ivi, backend, &argc, argv) < 0) {
1220                 weston_log("fatal: failed to create compositor backend.\n");
1221                 goto error_compositor;
1222         }
1223
1224         ivi.heads_changed.notify = heads_changed;
1225         weston_compositor_add_heads_changed_listener(ivi.compositor,
1226                                                      &ivi.heads_changed);
1227
1228         if (ivi_desktop_init(&ivi) < 0)
1229                 goto error_compositor;
1230
1231         if (ivi_shell_init(&ivi) < 0)
1232                 goto error_compositor;
1233
1234         add_bindings(ivi.compositor);
1235
1236         weston_compositor_flush_heads_changed(ivi.compositor);
1237
1238         ivi_shell_init_black_fs(&ivi);
1239
1240         if (create_listening_socket(display, socket_name) < 0)
1241                 goto error_compositor;
1242
1243         ivi.compositor->exit = handle_exit;
1244
1245         weston_compositor_wake(ivi.compositor);
1246
1247         ivi_shell_create_global(&ivi);
1248         ivi_launch_shell_client(&ivi);
1249         ivi_agl_systemd_notify(&ivi);
1250
1251         wl_display_run(display);
1252
1253         wl_display_destroy_clients(display);
1254
1255 error_compositor:
1256         weston_compositor_tear_down(ivi.compositor);
1257
1258         weston_compositor_log_scope_destroy(log_scope);
1259         log_scope = NULL;
1260
1261         weston_log_ctx_compositor_destroy(ivi.compositor);
1262         weston_compositor_destroy(ivi.compositor);
1263
1264         weston_log_subscriber_destroy_log(logger);
1265
1266 error_signals:
1267         for (size_t i = 0; i < ARRAY_LENGTH(signals); ++i)
1268                 if (signals[i])
1269                         wl_event_source_remove(signals[i]);
1270
1271         wl_display_destroy(display);
1272
1273         log_file_close();
1274         if (ivi.config)
1275                 weston_config_destroy(ivi.config);
1276 }