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 struct ivi_compositor *
  56 to_ivi_compositor(struct weston_compositor *ec)
  57 {
  58         return weston_compositor_get_user_data(ec);
  59 }
  60
  61 static void
  62 handle_output_destroy(struct wl_listener *listener, void *data)
  63 {
  64         struct ivi_output *output;
  65
  66         output = wl_container_of(listener, output, output_destroy);
  67         assert(output->output == data);
  68
  69         output->output = NULL;
  70         wl_list_remove(&output->output_destroy.link);
  71 }
  72
  73 struct ivi_output *
  74 to_ivi_output(struct weston_output *o)
  75 {
  76         struct wl_listener *listener;
  77         struct ivi_output *output;
  78
  79         listener = weston_output_get_destroy_listener(o, handle_output_destroy);
  80         output = wl_container_of(listener, output, output_destroy);
  81
  82         return output;
  83 }
  84
  85 static struct ivi_output *
  86 ivi_ensure_output(struct ivi_compositor *ivi, char *name,
  87                   struct weston_config_section *config)
  88 {
  89         struct ivi_output *output = NULL;
  90         wl_list_for_each(output, &ivi->outputs, link) {
  91                 if (strcmp(output->name, name) == 0) {
  92                         free(name);
  93                         return output;
  94                 }
  95         }
  96
  97         output = zalloc(sizeof *output);
  98         if (!output) {
  99                 free(name);
 100                 return NULL;
 101         }
 102
 103         output->ivi = ivi;
 104         output->name = name;
 105         output->config = config;
 106
 107         output->output = weston_compositor_create_output(ivi->compositor, name);
 108         if (!output->output) {
 109                 free(output->name);
 110                 free(output);
 111                 return NULL;
 112         }
 113
 114         output->output_destroy.notify = handle_output_destroy;
 115         weston_output_add_destroy_listener(output->output,
 116                                            &output->output_destroy);
 117
 118         wl_list_insert(&ivi->outputs, &output->link);
 119         return output;
 120 }
 121
 122 static int
 123 count_heads(struct weston_output *output)
 124 {
 125         struct weston_head *iter = NULL;
 126         int n = 0;
 127
 128         while ((iter = weston_output_iterate_heads(output, iter)))
 129                 ++n;
 130
 131         return n;
 132 }
 133
 134 static void
 135 handle_head_destroy(struct wl_listener *listener, void *data)
 136 {
 137         struct weston_head *head = data;
 138         struct weston_output *output;
 139
 140         wl_list_remove(&listener->link);
 141         free(listener);
 142
 143         output = weston_head_get_output(head);
 144
 145         /* On shutdown path, the output might be already gone. */
 146         if (!output)
 147                 return;
 148
 149         /* We're the last head */
 150         if (count_heads(output) <= 1)
 151                 weston_output_destroy(output);
 152 }
 153
 154 static void
 155 add_head_destroyed_listener(struct weston_head *head)
 156 {
 157         /* We already have a destroy listener */
 158         if (weston_head_get_destroy_listener(head, handle_head_destroy))
 159                 return;
 160
 161         struct wl_listener *listener = zalloc(sizeof *listener);
 162         if (!listener)
 163                 return;
 164
 165         listener->notify = handle_head_destroy;
 166         weston_head_add_destroy_listener(head, listener);
 167 }
 168
 169 static int
 170 drm_configure_output(struct ivi_output *output)
 171 {
 172         struct ivi_compositor *ivi = output->ivi;
 173         struct weston_config_section *section = output->config;
 174         enum weston_drm_backend_output_mode mode =
 175                 WESTON_DRM_BACKEND_OUTPUT_PREFERRED;
 176         char *modeline = NULL;
 177         char *gbm_format = NULL;
 178         char *seat = NULL;
 179
 180         if (section) {
 181                 char *m;
 182                 weston_config_section_get_string(section, "mode", &m, "preferred");
 183
 184                 /* This should have been handled earlier */
 185                 assert(strcmp(m, "off") != 0);
 186
 187                 if (ivi->cmdline.use_current_mode || strcmp(m, "current") == 0) {
 188                         mode = WESTON_DRM_BACKEND_OUTPUT_CURRENT;
 189                 } else if (strcmp(m, "preferred") != 0) {
 190                         modeline = m;
 191                         m = NULL;
 192                 }
 193                 free(m);
 194
 195                 weston_config_section_get_string(section, "gbm-format",
 196                                                  &gbm_format, NULL);
 197
 198                 weston_config_section_get_string(section, "seat", &seat, "");
 199         }
 200
 201         if (ivi->drm_api->set_mode(output->output, mode, modeline) < 0) {
 202                 weston_log("Cannot configure output using weston_drm_output_api.\n");
 203                 free(modeline);
 204                 return -1;
 205         }
 206         free(modeline);
 207
 208         ivi->drm_api->set_gbm_format(output->output, gbm_format);
 209         free(gbm_format);
 210
 211         ivi->drm_api->set_seat(output->output, seat);
 212         free(seat);
 213
 214         return 0;
 215 }
 216
 217 #define WINDOWED_DEFAULT_WIDTH 1024
 218 #define WINDOWED_DEFAULT_HEIGHT 768
 219
 220 static int
 221 windowed_configure_output(struct ivi_output *output)
 222 {
 223         struct ivi_compositor *ivi = output->ivi;
 224         struct weston_config_section *section = output->config;
 225         int width = WINDOWED_DEFAULT_WIDTH;
 226         int height = WINDOWED_DEFAULT_HEIGHT;
 227
 228         if (section) {
 229                 char *mode;
 230
 231                 weston_config_section_get_string(section, "mode", &mode, NULL);
 232                 if (!mode || sscanf(mode, "%dx%d", &width, &height) != 2) {
 233                         weston_log("Invalid mode for output %s. Using defaults.\n",
 234                                    output->name);
 235                         width = WINDOWED_DEFAULT_WIDTH;
 236                         height = WINDOWED_DEFAULT_HEIGHT;
 237                 }
 238                 free(mode);
 239         }
 240
 241         if (ivi->cmdline.width)
 242                 width = ivi->cmdline.width;
 243         if (ivi->cmdline.height)
 244                 height = ivi->cmdline.height;
 245         if (ivi->cmdline.scale)
 246                 weston_output_set_scale(output->output, ivi->cmdline.scale);
 247
 248         if (ivi->window_api->output_set_size(output->output, width, height) < 0) {
 249                 weston_log("Cannot configure output '%s' using weston_windowed_output_api.\n",
 250                            output->name);
 251                 return -1;
 252         }
 253
 254         return 0;
 255 }
 256
 257 static int
 258 parse_transform(const char *transform, uint32_t *out)
 259 {
 260         static const struct { const char *name; uint32_t token; } transforms[] = {
 261                 { "normal",     WL_OUTPUT_TRANSFORM_NORMAL },
 262                 { "90",         WL_OUTPUT_TRANSFORM_90 },
 263                 { "180",        WL_OUTPUT_TRANSFORM_180 },
 264                 { "270",        WL_OUTPUT_TRANSFORM_270 },
 265                 { "flipped",    WL_OUTPUT_TRANSFORM_FLIPPED },
 266                 { "flipped-90", WL_OUTPUT_TRANSFORM_FLIPPED_90 },
 267                 { "flipped-180", WL_OUTPUT_TRANSFORM_FLIPPED_180 },
 268                 { "flipped-270", WL_OUTPUT_TRANSFORM_FLIPPED_270 },
 269         };
 270
 271         for (size_t i = 0; i < ARRAY_LENGTH(transforms); i++)
 272                 if (strcmp(transforms[i].name, transform) == 0) {
 273                         *out = transforms[i].token;
 274                         return 0;
 275                 }
 276
 277         *out = WL_OUTPUT_TRANSFORM_NORMAL;
 278         return -1;
 279 }
 280
 281 static int
 282 configure_output(struct ivi_output *output)
 283 {
 284         struct ivi_compositor *ivi = output->ivi;
 285         struct weston_config_section *section = output->config;
 286         int32_t scale = 1;
 287         uint32_t transform = WL_OUTPUT_TRANSFORM_NORMAL;
 288
 289         /*
 290          * This can happen with the wayland backend with 'sprawl'. The config
 291          * is hard-coded, so we don't need to do anything.
 292          */
 293         if (!ivi->drm_api && !ivi->window_api)
 294                 return 0;
 295
 296         if (section) {
 297                 char *t;
 298
 299                 weston_config_section_get_int(section, "scale", &scale, 1);
 300                 weston_config_section_get_string(section, "transform", &t, "normal");
 301                 if (parse_transform(t, &transform) < 0)
 302                         weston_log("Invalid transform \"%s\" for output %s\n",
 303                                    t, output->name);
 304                 free(t);
 305         }
 306
 307         weston_output_set_scale(output->output, scale);
 308         weston_output_set_transform(output->output, transform);
 309
 310         if (ivi->drm_api)
 311                 return drm_configure_output(output);
 312         else
 313                 return windowed_configure_output(output);
 314 }
 315
 316 /*
 317  * Reorgainizes the output's add array into two sections.
 318  * add[0..ret-1] are the heads that failed to get attached.
 319  * add[ret..add_len] are the heads that were successfully attached.
 320  *
 321  * The order between elements in each section is stable.
 322  */
 323 static size_t
 324 try_attach_heads(struct ivi_output *output)
 325 {
 326         size_t fail_len = 0;
 327
 328         for (size_t i = 0; i < output->add_len; ++i) {
 329                 if (weston_output_attach_head(output->output, output->add[i]) < 0) {
 330                         struct weston_head *tmp = output->add[i];
 331                         memmove(&output->add[fail_len + 1], output->add[fail_len],
 332                                 sizeof output->add[0] * (i - fail_len));
 333                         output->add[fail_len++] = tmp;
 334                 }
 335         }
 336
 337         return fail_len;
 338 }
 339
 340 /*
 341  * Like try_attach_heads, this reorganizes the output's add array into a failed
 342  * and successful section.
 343  * i is the number of heads that already failed the previous step.
 344  */
 345 static size_t
 346 try_enable_output(struct ivi_output *output, size_t i)
 347 {
 348         for (; i < output->add_len; ++i) {
 349                 struct weston_head *head;
 350
 351                 if (weston_output_enable(output->output) == 0)
 352                         break;
 353
 354                 head = output->add[output->add_len - 1];
 355                 memmove(&output->add[i + 1], &output->add[i],
 356                         sizeof output->add[0] * (output->add_len - i));
 357                 output->add[i] = head;
 358
 359                 weston_head_detach(head);
 360         }
 361
 362         return i;
 363 }
 364
 365 static int
 366 try_attach_enable_heads(struct ivi_output *output)
 367 {
 368         size_t fail_len;
 369         assert(!output->output->enabled);
 370
 371         fail_len = try_attach_heads(output);
 372
 373         if (configure_output(output) < 0)
 374                 return -1;
 375
 376         fail_len = try_enable_output(output, fail_len);
 377
 378         /* All heads failed to be attached */
 379         if (fail_len == output->add_len)
 380                 return -1;
 381
 382         /* For each successful head attached */
 383         for (size_t i = fail_len; i < output->add_len; ++i)
 384                 add_head_destroyed_listener(output->add[i]);
 385
 386         output->add_len = fail_len;
 387         return 0;
 388 }
 389
 390 static int
 391 process_output(struct ivi_output *output)
 392 {
 393         if (output->output->enabled) {
 394                 output->add_len = try_attach_heads(output);
 395                 return output->add_len == 0 ? 0 : -1;
 396         }
 397
 398         return try_attach_enable_heads(output);
 399 }
 400
 401 static void
 402 head_disable(struct ivi_compositor *ivi, struct weston_head *head)
 403 {
 404         struct weston_output *output;
 405         struct ivi_output *ivi_output;
 406         struct wl_listener *listener;
 407
 408         output = weston_head_get_output(head);
 409         assert(output);
 410
 411         listener = weston_output_get_destroy_listener(output,
 412                                                       handle_output_destroy);
 413         assert(listener);
 414
 415         ivi_output = wl_container_of(listener, ivi_output, output_destroy);
 416         assert(ivi_output->output == output);
 417
 418         weston_head_detach(head);
 419         if (count_heads(ivi_output->output) == 0) {
 420                 weston_output_disable(ivi_output->output);
 421         }
 422 }
 423
 424 static struct weston_config_section *
 425 find_controlling_output_config(struct weston_config *config,
 426                                const char *name)
 427 {
 428         struct weston_config_section *section;
 429         char *same_as;
 430         int depth = 0;
 431
 432         same_as = strdup(name);
 433         do {
 434                 section = weston_config_get_section(config, "output",
 435                                                     "name", same_as);
 436                 if (!section && depth > 0)
 437                         weston_log("Configuration error: output section reffered"
 438                                    "to by same-as=%s not found.\n", same_as);
 439                 free(same_as);
 440
 441                 if (!section)
 442                         return NULL;
 443
 444                 if (depth++ > 8) {
 445                         weston_log("Configuration error: same-as nested too "
 446                                    "deep for output '%s'.\n", name);
 447                         return NULL;
 448                 }
 449
 450                 weston_config_section_get_string(section, "same-as",
 451                                                  &same_as, NULL);
 452         } while (same_as);
 453
 454         return section;
 455 }
 456
 457 static void
 458 head_prepare_enable(struct ivi_compositor *ivi, struct weston_head *head)
 459 {
 460         const char *name = weston_head_get_name(head);
 461         struct weston_config_section *section;
 462         struct ivi_output *output;
 463         char *output_name = NULL;
 464
 465         section = find_controlling_output_config(ivi->config, name);
 466         if (section) {
 467                 char *mode;
 468
 469                 weston_config_section_get_string(section, "mode", &mode, NULL);
 470                 if (mode && strcmp(mode, "off") == 0) {
 471                         free(mode);
 472                         return;
 473                 }
 474                 free(mode);
 475
 476                 weston_config_section_get_string(section, "name",
 477                                                  &output_name, NULL);
 478         } else {
 479                 output_name = strdup(name);
 480         }
 481
 482         if (!output_name)
 483                 return;
 484
 485         output = ivi_ensure_output(ivi, output_name, section);
 486         if (!output)
 487                 return;
 488
 489         if (output->add_len >= ARRAY_LENGTH(output->add))
 490                 return;
 491
 492         output->add[output->add_len++] = head;
 493 }
 494
 495 static void
 496 heads_changed(struct wl_listener *listener, void *arg)
 497 {
 498         struct weston_compositor *compositor = arg;
 499         struct weston_head *head = NULL;
 500         struct ivi_compositor *ivi = to_ivi_compositor(compositor);
 501         struct ivi_output *output;
 502
 503         while ((head = weston_compositor_iterate_heads(ivi->compositor, head))) {
 504                 bool connected = weston_head_is_connected(head);
 505                 bool enabled = weston_head_is_enabled(head);
 506                 bool changed = weston_head_is_device_changed(head);
 507                 bool non_desktop = weston_head_is_non_desktop(head);
 508
 509                 if (connected && !enabled && !non_desktop)
 510                         head_prepare_enable(ivi, head);
 511                 else if (!connected && enabled)
 512                         head_disable(ivi, head);
 513                 else if (enabled && changed)
 514                         weston_log("Detected a monitor change on head '%s', "
 515                                    "not bothering to do anything about it.\n",
 516                                    weston_head_get_name(head));
 517
 518                 weston_head_reset_device_changed(head);
 519         }
 520
 521         wl_list_for_each(output, &ivi->outputs, link) {
 522                 if (output->add_len == 0)
 523                         continue;
 524
 525                 if (process_output(output) < 0) {
 526                         output->add_len = 0;
 527                         ivi->init_failed = true;
 528                 }
 529         }
 530 }
 531
 532 static int
 533 load_drm_backend(struct ivi_compositor *ivi, int *argc, char *argv[])
 534 {
 535         struct weston_drm_backend_config config = {
 536                 .base = {
 537                         .struct_version = WESTON_DRM_BACKEND_CONFIG_VERSION,
 538                         .struct_size = sizeof config,
 539                 },
 540         };
 541         struct weston_config_section *section;
 542         int use_current_mode = 0;
 543         int use_pixman = 0;
 544         bool use_shadow;
 545         int ret;
 546
 547         const struct weston_option options[] = {
 548                 { WESTON_OPTION_STRING, "seat", 0, &config.seat_id },
 549                 { WESTON_OPTION_INTEGER, "tty", 0, &config.tty },
 550                 { WESTON_OPTION_STRING, "drm-device", 0, &config.specific_device },
 551                 { WESTON_OPTION_BOOLEAN, "current-mode", 0, &use_current_mode },
 552                 { WESTON_OPTION_BOOLEAN, "use-pixman", 0, &use_pixman },
 553         };
 554
 555         parse_options(options, ARRAY_LENGTH(options), argc, argv);
 556         config.use_pixman = use_pixman;
 557         ivi->cmdline.use_current_mode = use_current_mode;
 558
 559         section = weston_config_get_section(ivi->config, "core", NULL, NULL);
 560         weston_config_section_get_string(section, "gbm-format",
 561                                          &config.gbm_format, NULL);
 562         weston_config_section_get_uint(section, "pageflip-timeout",
 563                                        &config.pageflip_timeout, 0);
 564         weston_config_section_get_bool(section, "pixman-shadow", &use_shadow, 1);
 565         config.use_pixman_shadow = use_shadow;
 566
 567         ret = weston_compositor_load_backend(ivi->compositor, WESTON_BACKEND_DRM,
 568                                              &config.base);
 569         if (ret < 0)
 570                 return ret;
 571
 572         ivi->drm_api = weston_drm_output_get_api(ivi->compositor);
 573         if (!ivi->drm_api) {
 574                 weston_log("Cannot use drm output api.\n");
 575                 ret = -1;
 576                 goto error;
 577         }
 578
 579 error:
 580         free(config.gbm_format);
 581         free(config.seat_id);
 582         return ret;
 583 }
 584
 585 static void
 586 windowed_parse_common_options(struct ivi_compositor *ivi, int *argc, char *argv[],
 587                               bool *use_pixman, bool *fullscreen, int *output_count)
 588 {
 589         struct weston_config_section *section;
 590         bool pixman;
 591         int fs = 0;
 592
 593         const struct weston_option options[] = {
 594                 { WESTON_OPTION_INTEGER, "width", 0, &ivi->cmdline.width },
 595                 { WESTON_OPTION_INTEGER, "height", 0, &ivi->cmdline.height },
 596                 { WESTON_OPTION_INTEGER, "scale", 0, &ivi->cmdline.scale },
 597                 { WESTON_OPTION_BOOLEAN, "use-pixman", 0, &pixman },
 598                 { WESTON_OPTION_BOOLEAN, "fullscreen", 0, &fs },
 599                 { WESTON_OPTION_INTEGER, "output-count", 0, output_count },
 600         };
 601
 602         section = weston_config_get_section(ivi->config, "core", NULL, NULL);
 603         weston_config_section_get_bool(section, "use-pixman", &pixman, 0);
 604
 605         *output_count = 1;
 606         parse_options(options, ARRAY_LENGTH(options), argc, argv);
 607         *use_pixman = pixman;
 608         *fullscreen = fs;
 609 }
 610
 611 static int
 612 windowed_create_outputs(struct ivi_compositor *ivi, int output_count,
 613                         const char *match_prefix, const char *name_prefix)
 614 {
 615         struct weston_config_section *section = NULL;
 616         const char *section_name;
 617         char *default_output = NULL;
 618         int i = 0;
 619         size_t match_len = strlen(match_prefix);
 620
 621         while (weston_config_next_section(ivi->config, &section, &section_name)) {
 622                 char *output_name;
 623
 624                 if (i >= output_count)
 625                         break;
 626
 627                 if (strcmp(section_name, "output") != 0)
 628                         continue;
 629
 630                 weston_config_section_get_string(section, "name", &output_name, NULL);
 631                 if (output_name == NULL)
 632                         continue;
 633                 if (strncmp(output_name, match_prefix, match_len) != 0) {
 634                         free(output_name);
 635                         continue;
 636                 }
 637
 638                 if (ivi->window_api->create_head(ivi->compositor, output_name) < 0) {
 639                         free(output_name);
 640                         return -1;
 641                 }
 642
 643                 free(output_name);
 644                 ++i;
 645         }
 646
 647         for (; i < output_count; ++i) {
 648                 if (asprintf(&default_output, "%s%d", name_prefix, i) < 0)
 649                         return -1;
 650
 651                 if (ivi->window_api->create_head(ivi->compositor, default_output) < 0) {
 652                         free(default_output);
 653                         return -1;
 654                 }
 655
 656                 free(default_output);
 657         }
 658
 659         return 0;
 660 }
 661
 662 static int
 663 load_wayland_backend(struct ivi_compositor *ivi, int *argc, char *argv[])
 664 {
 665         struct weston_wayland_backend_config config = {
 666                 .base = {
 667                         .struct_version = WESTON_WAYLAND_BACKEND_CONFIG_VERSION,
 668                         .struct_size = sizeof config,
 669                 },
 670         };
 671         struct weston_config_section *section;
 672         int sprawl = 0;
 673         int output_count;
 674         int ret;
 675
 676         const struct weston_option options[] = {
 677                 { WESTON_OPTION_STRING, "display", 0, &config.display_name },
 678                 { WESTON_OPTION_STRING, "sprawl", 0, &sprawl },
 679         };
 680
 681         windowed_parse_common_options(ivi, argc, argv, &config.use_pixman,
 682                                       &config.fullscreen, &output_count);
 683
 684         parse_options(options, ARRAY_LENGTH(options), argc, argv);
 685         config.sprawl = sprawl;
 686
 687         section = weston_config_get_section(ivi->config, "shell", NULL, NULL);
 688         weston_config_section_get_string(section, "cursor-theme",
 689                                          &config.cursor_theme, NULL);
 690         weston_config_section_get_int(section, "cursor-size",
 691                                       &config.cursor_size, 32);
 692
 693         ret = weston_compositor_load_backend(ivi->compositor, WESTON_BACKEND_WAYLAND,
 694                                              &config.base);
 695
 696         free(config.cursor_theme);
 697         free(config.display_name);
 698
 699         if (ret < 0)
 700                 return ret;
 701
 702         ivi->window_api = weston_windowed_output_get_api(ivi->compositor);
 703
 704         /*
 705          * We will just assume if load_backend() finished cleanly and
 706          * windowed_output_api is not present that wayland backend is started
 707          * with --sprawl or runs on fullscreen-shell. In this case, all values
 708          * are hardcoded, so nothing can be configured; simply create and
 709          * enable an output.
 710          */
 711         if (ivi->window_api == NULL)
 712                 return 0;
 713
 714         return windowed_create_outputs(ivi, output_count, "WL", "wayland");
 715 }
 716
 717 #ifdef HAVE_BACKEND_X11
 718 static int
 719 load_x11_backend(struct ivi_compositor *ivi, int *argc, char *argv[])
 720 {
 721         struct weston_x11_backend_config config = {
 722                 .base = {
 723                         .struct_version = WESTON_X11_BACKEND_CONFIG_VERSION,
 724                         .struct_size = sizeof config,
 725                 },
 726         };
 727         int no_input = 0;
 728         int output_count;
 729         int ret;
 730
 731         const struct weston_option options[] = {
 732                { WESTON_OPTION_BOOLEAN, "no-input", 0, &no_input },
 733         };
 734
 735         windowed_parse_common_options(ivi, argc, argv, &config.use_pixman,
 736                                       &config.fullscreen, &output_count);
 737
 738         parse_options(options, ARRAY_LENGTH(options), argc, argv);
 739         config.no_input = no_input;
 740
 741         ret = weston_compositor_load_backend(ivi->compositor, WESTON_BACKEND_X11,
 742                                              &config.base);
 743
 744         if (ret < 0)
 745                 return ret;
 746
 747         ivi->window_api = weston_windowed_output_get_api(ivi->compositor);
 748         if (!ivi->window_api) {
 749                 weston_log("Cannot use weston_windowed_output_api.\n");
 750                 return -1;
 751         }
 752
 753         return windowed_create_outputs(ivi, output_count, "X", "screen");
 754 }
 755 #else
 756 static int
 757 load_x11_backend(struct ivi_compositor *ivi, int *argc, char *argv[])
 758 {
 759         return -1;
 760 }
 761 #endif
 762
 763 static int
 764 load_backend(struct ivi_compositor *ivi, const char *backend,
 765              int *argc, char *argv[])
 766 {
 767         if (strcmp(backend, "drm-backend.so") == 0) {
 768                 return load_drm_backend(ivi, argc, argv);
 769         } else if (strcmp(backend, "wayland-backend.so") == 0) {
 770                 return load_wayland_backend(ivi, argc, argv);
 771         } else if (strcmp(backend, "x11-backend.so") == 0) {
 772                 return load_x11_backend(ivi, argc, argv);
 773         }
 774
 775         weston_log("fatal: unknown backend '%s'.\n", backend);
 776         return -1;
 777 }
 778
 779 static char *
 780 choose_default_backend(void)
 781 {
 782         char *backend = NULL;
 783
 784         if (getenv("WAYLAND_DISPLAY") || getenv("WAYLAND_SOCKET"))
 785                 backend = strdup("wayland-backend.so");
 786         else if (getenv("DISPLAY"))
 787                 backend = strdup("x11-backend.so");
 788         else
 789                 backend = strdup("drm-backend.so");
 790
 791         return backend;
 792 }
 793
 794 static int
 795 compositor_init_config(struct weston_compositor *compositor,
 796                        struct weston_config *config)
 797 {
 798         struct xkb_rule_names xkb_names;
 799         struct weston_config_section *section;
 800         int repaint_msec;
 801         bool vt_switching;
 802         bool require_input;
 803
 804         /* agl-compositor.ini [keyboard] */
 805         section = weston_config_get_section(config, "keyboard", NULL, NULL);
 806         weston_config_section_get_string(section, "keymap_rules",
 807                                          (char **) &xkb_names.rules, NULL);
 808         weston_config_section_get_string(section, "keymap_model",
 809                                          (char **) &xkb_names.model, NULL);
 810         weston_config_section_get_string(section, "keymap_layout",
 811                                          (char **) &xkb_names.layout, NULL);
 812         weston_config_section_get_string(section, "keymap_variant",
 813                                          (char **) &xkb_names.variant, NULL);
 814         weston_config_section_get_string(section, "keymap_options",
 815                                          (char **) &xkb_names.options, NULL);
 816
 817         if (weston_compositor_set_xkb_rule_names(compositor, &xkb_names) < 0)
 818                 return -1;
 819
 820         weston_config_section_get_int(section, "repeat-rate",
 821                                       &compositor->kb_repeat_rate, 40);
 822         weston_config_section_get_int(section, "repeat-delay",
 823                                       &compositor->kb_repeat_delay, 400);
 824
 825         weston_config_section_get_bool(section, "vt-switching",
 826                                        &vt_switching, true);
 827         compositor->vt_switching = vt_switching;
 828
 829         /* agl-compositor.ini [core] */
 830         section = weston_config_get_section(config, "core", NULL, NULL);
 831
 832         weston_config_section_get_bool(section, "require-input", &require_input, true);
 833         compositor->require_input = require_input;
 834
 835         weston_config_section_get_int(section, "repaint-window", &repaint_msec,
 836                                       compositor->repaint_msec);
 837         if (repaint_msec < -10 || repaint_msec > 1000) {
 838                 weston_log("Invalid repaint_window value in config: %d\n",
 839                            repaint_msec);
 840         } else {
 841                 compositor->repaint_msec = repaint_msec;
 842         }
 843         weston_log("Output repaint window is %d ms maximum.\n",
 844                    compositor->repaint_msec);
 845
 846         return 0;
 847 }
 848
 849 struct ivi_surface *
 850 to_ivi_surface(struct weston_surface *surface)
 851 {
 852         struct weston_desktop_surface *dsurface;
 853
 854         dsurface = weston_surface_get_desktop_surface(surface);
 855         if (!dsurface)
 856                 return NULL;
 857
 858         return weston_desktop_surface_get_user_data(dsurface);
 859 }
 860
 861 static void
 862 activate_binding(struct weston_seat *seat,
 863                  struct weston_view *focus_view)
 864 {
 865         struct weston_surface *focus = focus_view->surface;
 866         struct weston_surface *main_surface =
 867                 weston_surface_get_main_surface(focus);
 868         struct ivi_surface *surface;
 869
 870         surface = to_ivi_surface(main_surface);
 871         if (!surface)
 872                 return;
 873
 874         weston_seat_set_keyboard_focus(seat, focus);
 875 }
 876
 877 static void
 878 click_to_activate_binding(struct weston_pointer *pointer,
 879                           const struct timespec *time,
 880                           uint32_t button, void *data)
 881 {
 882         if (pointer->grab != &pointer->default_grab)
 883                 return;
 884         if (pointer->focus == NULL)
 885                 return;
 886
 887         activate_binding(pointer->seat, pointer->focus);
 888 }
 889
 890 static void
 891 touch_to_activate_binding(struct weston_touch *touch,
 892                           const struct timespec *time,
 893                           void *data)
 894 {
 895         if (touch->grab != &touch->default_grab)
 896                 return;
 897         if (touch->focus == NULL)
 898                 return;
 899
 900         activate_binding(touch->seat, touch->focus);
 901 }
 902
 903 static void
 904 add_bindings(struct weston_compositor *compositor)
 905 {
 906         weston_compositor_add_button_binding(compositor, BTN_LEFT, 0,
 907                                              click_to_activate_binding,
 908                                              NULL);
 909         weston_compositor_add_button_binding(compositor, BTN_RIGHT, 0,
 910                                              click_to_activate_binding,
 911                                              NULL);
 912         weston_compositor_add_touch_binding(compositor, 0,
 913                                             touch_to_activate_binding,
 914                                             NULL);
 915 }
 916
 917 static int
 918 create_listening_socket(struct wl_display *display, const char *socket_name)
 919 {
 920         if (socket_name) {
 921                 if (wl_display_add_socket(display, socket_name)) {
 922                         weston_log("fatal: failed to add socket: %s\n",
 923                                    strerror(errno));
 924                         return -1;
 925                 }
 926         } else {
 927                 socket_name = wl_display_add_socket_auto(display);
 928                 if (!socket_name) {
 929                         weston_log("fatal: failed to add socket: %s\n",
 930                                    strerror(errno));
 931                         return -1;
 932                 }
 933         }
 934
 935         setenv("WAYLAND_DISPLAY", socket_name, 1);
 936
 937         return 0;
 938 }
 939
 940 static bool
 941 global_filter(const struct wl_client *client, const struct wl_global *global,
 942               void *data)
 943 {
 944         return true;
 945 }
 946
 947 static int
 948 load_config(struct weston_config **config, bool no_config,
 949             const char *config_file)
 950 {
 951         const char *file = "agl-compositor.ini";
 952         const char *full_path;
 953
 954         if (config_file)
 955                 file = config_file;
 956
 957         if (!no_config)
 958                 *config = weston_config_parse(file);
 959
 960         if (*config) {
 961                 full_path = weston_config_get_full_path(*config);
 962
 963                 weston_log("Using config file '%s'.\n", full_path);
 964                 setenv(WESTON_CONFIG_FILE_ENV_VAR, full_path, 1);
 965
 966                 return 0;
 967         }
 968
 969         if (config_file && !no_config) {
 970                 weston_log("fatal: error opening or reading config file '%s'.\n",
 971                         config_file);
 972
 973                 return -1;
 974         }
 975
 976         weston_log("Starting with no config file.\n");
 977         setenv(WESTON_CONFIG_FILE_ENV_VAR, "", 1);
 978
 979         return 0;
 980 }
 981
 982 static FILE *logfile;
 983
 984 static int
 985 log_timestamp(void)
 986 {
 987         static int cached_tm_mday = -1;
 988         struct timespec ts;
 989         struct tm brokendown_time;
 990         char buf[128];
 991
 992         clock_gettime(CLOCK_REALTIME, &ts);
 993         if (!localtime_r(&ts.tv_sec, &brokendown_time))
 994                 return fprintf(logfile, "[(NULL)localtime] ");
 995
 996         if (brokendown_time.tm_mday != cached_tm_mday) {
 997                 strftime(buf, sizeof buf, "%Y-%m-%d %Z", &brokendown_time);
 998                 fprintf(logfile, "Date: %s\n", buf);
 999
1000                 cached_tm_mday = brokendown_time.tm_mday;
1001         }
1002
1003         strftime(buf, sizeof buf, "%H:%M:%S", &brokendown_time);
1004
1005         return fprintf(logfile, "[%s.%03ld] ", buf, ts.tv_nsec / 1000000);
1006 }
1007
1008 static void
1009 custom_handler(const char *fmt, va_list arg)
1010 {
1011         log_timestamp();
1012         fprintf(logfile, "libwayland: ");
1013         vfprintf(logfile, fmt, arg);
1014 }
1015
1016 static void
1017 log_file_open(const char *filename)
1018 {
1019         wl_log_set_handler_server(custom_handler);
1020
1021         if (filename)
1022                 logfile = fopen(filename, "a");
1023
1024         if (!logfile) {
1025                 logfile = stderr;
1026         } else {
1027                 os_fd_set_cloexec(fileno(logfile));
1028                 setvbuf(logfile, NULL, _IOLBF, 256);
1029         }
1030 }
1031
1032 static void
1033 log_file_close(void)
1034 {
1035         if (logfile && logfile != stderr)
1036                 fclose(logfile);
1037         logfile = stderr;
1038 }
1039
1040 static int
1041 vlog(const char *fmt, va_list ap)
1042 {
1043         int l;
1044
1045         l = log_timestamp();
1046         l += vfprintf(logfile, fmt, ap);
1047
1048         return l;
1049 }
1050
1051 static int
1052 vlog_continue(const char *fmt, va_list ap)
1053 {
1054         return vfprintf(logfile, fmt, ap);
1055 }
1056
1057 static int
1058 on_term_signal(int signo, void *data)
1059 {
1060         struct wl_display *display = data;
1061
1062         weston_log("caught signal %d\n", signo);
1063         wl_display_terminate(display);
1064
1065         return 1;
1066 }
1067
1068 static void
1069 handle_exit(struct weston_compositor *compositor)
1070 {
1071         wl_display_terminate(compositor->wl_display);
1072 }
1073
1074 static void
1075 usage(int error_code)
1076 {
1077         FILE *out = error_code == EXIT_SUCCESS ? stdout : stderr;
1078         fprintf(out,
1079                 "Usage: agl-compositor [OPTIONS]\n"
1080                 "\n"
1081                 "This is " PACKAGE_STRING ", the reference compositor for\n"
1082                 "Automotive Grade Linux. Weston-ivi supports multiple backends, and depending\n"
1083                 "on which backend is in use different options will be accepted.\n"
1084                 "\n"
1085                 "Core options:\n"
1086                 "\n"
1087                 "  --version\t\tPrint agl-compositor version\n"
1088                 "  -B, --backend=MODULE\tBackend module, one of\n"
1089                         "\t\t\t\tdrm-backend.so\n"
1090                         "\t\t\t\twayland-backend.so\n"
1091                         "\t\t\t\tx11-backend.so\n"
1092                 "  -S, --socket=NAME\tName of socket to listen on\n"
1093                 "  --log=FILE\t\tLog to the given file\n"
1094                 "  -c, --config=FILE\tConfig file to load, defaults to agl-compositor.ini\n"
1095                 "  --no-config\t\tDo not read agl-compositor.ini\n"
1096                 "  --debug\t\tEnable debug extension\n"
1097                 "  -h, --help\t\tThis help message\n"
1098                 "\n");
1099         exit(error_code);
1100 }
1101
1102 static void
1103 ivi_compositor_get_quirks(struct ivi_compositor *ivi)
1104 {
1105         struct weston_config_section *section;
1106
1107         if (!ivi->config)
1108                 return;
1109
1110         section = weston_config_get_section(ivi->config, "shell", NULL, NULL);
1111         weston_config_section_get_bool(section, "activate-by-default",
1112                         &ivi->quirks.activate_apps_by_default, 0);
1113
1114 }
1115
1116 int main(int argc, char *argv[])
1117 {
1118         struct ivi_compositor ivi = { 0 };
1119         struct wl_display *display = NULL;
1120         struct wl_event_loop *loop;
1121         struct wl_event_source *signals[3] = { 0 };
1122         struct weston_config_section *section;
1123         /* Command line options */
1124         char *backend = NULL;
1125         char *socket_name = NULL;
1126         char *log = NULL;
1127         int help = 0;
1128         int version = 0;
1129         int no_config = 0;
1130         char *config_file = NULL;
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         };
1144
1145         wl_list_init(&ivi.outputs);
1146         wl_list_init(&ivi.surfaces);
1147         wl_list_init(&ivi.pending_surfaces);
1148         wl_list_init(&ivi.popup_pending_apps);
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, 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         weston_log_subscribe(log_ctx, logger, "log");
1179
1180         if (load_config(&ivi.config, no_config, config_file) < 0)
1181                 goto error_signals;
1182         section = weston_config_get_section(ivi.config, "core", NULL, NULL);
1183         if (!backend) {
1184                 weston_config_section_get_string(section, "backend", &backend,
1185                                                  NULL);
1186                 if (!backend)
1187                         backend = choose_default_backend();
1188         }
1189
1190         ivi_compositor_get_quirks(&ivi);
1191
1192         display = wl_display_create();
1193         loop = wl_display_get_event_loop(display);
1194
1195         wl_display_set_global_filter(display,
1196                                      global_filter, &ivi);
1197
1198         /* Register signal handlers so we shut down cleanly */
1199
1200         signals[0] = wl_event_loop_add_signal(loop, SIGTERM, on_term_signal,
1201                                               display);
1202         signals[1] = wl_event_loop_add_signal(loop, SIGINT, on_term_signal,
1203                                               display);
1204         signals[2] = wl_event_loop_add_signal(loop, SIGQUIT, on_term_signal,
1205                                               display);
1206
1207         for (size_t i = 0; i < ARRAY_LENGTH(signals); ++i)
1208                 if (!signals[i])
1209                         goto error_signals;
1210
1211         ivi.compositor = weston_compositor_create(display, log_ctx, &ivi);
1212         if (!ivi.compositor) {
1213                 weston_log("fatal: failed to create compositor.\n");
1214                 goto error_signals;
1215         }
1216
1217         if (compositor_init_config(ivi.compositor, ivi.config) < 0)
1218                 goto error_compositor;
1219
1220         if (load_backend(&ivi, backend, &argc, argv) < 0) {
1221                 weston_log("fatal: failed to create compositor backend.\n");
1222                 goto error_compositor;
1223         }
1224
1225         ivi.heads_changed.notify = heads_changed;
1226         weston_compositor_add_heads_changed_listener(ivi.compositor,
1227                                                      &ivi.heads_changed);
1228
1229         if (ivi_desktop_init(&ivi) < 0)
1230                 goto error_compositor;
1231
1232         if (ivi_policy_init(&ivi) < 0)
1233                 goto error_compositor;
1234
1235         if (ivi_shell_init(&ivi) < 0)
1236                 goto error_compositor;
1237
1238         add_bindings(ivi.compositor);
1239
1240         weston_compositor_flush_heads_changed(ivi.compositor);
1241
1242         ivi_shell_init_black_fs(&ivi);
1243
1244         if (create_listening_socket(display, socket_name) < 0)
1245                 goto error_compositor;
1246
1247         ivi.compositor->exit = handle_exit;
1248
1249         weston_compositor_wake(ivi.compositor);
1250
1251         ivi_shell_create_global(&ivi);
1252         ivi_launch_shell_client(&ivi);
1253         ivi_agl_systemd_notify(&ivi);
1254
1255         wl_display_run(display);
1256
1257         wl_display_destroy_clients(display);
1258
1259 error_compositor:
1260         weston_compositor_tear_down(ivi.compositor);
1261
1262         weston_compositor_log_scope_destroy(log_scope);
1263         log_scope = NULL;
1264
1265         weston_log_ctx_compositor_destroy(ivi.compositor);
1266         weston_compositor_destroy(ivi.compositor);
1267
1268         weston_log_subscriber_destroy_log(logger);
1269
1270         ivi_policy_destroy(ivi.policy);
1271
1272 error_signals:
1273         for (size_t i = 0; i < ARRAY_LENGTH(signals); ++i)
1274                 if (signals[i])
1275                         wl_event_source_remove(signals[i]);
1276
1277         wl_display_destroy(display);
1278
1279         log_file_close();
1280         if (ivi.config)
1281                 weston_config_destroy(ivi.config);
1282 }