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-6/compositor-drm.h>
  40 #include <libweston-6/compositor-wayland.h>
  41 #include <libweston-6/compositor-x11.h>
  42 #include <libweston-6/compositor.h>
  43 #include <libweston-6/windowed-output-api.h>
  44 #include <libweston-6/config-parser.h>
  45
  46 #include "shared/os-compatibility.h"
  47
  48 #include "agl-shell-server-protocol.h"
  49
  50 struct ivi_compositor *
  51 to_ivi_compositor(struct weston_compositor *ec)
  52 {
  53         return weston_compositor_get_user_data(ec);
  54 }
  55
  56 static void
  57 handle_output_destroy(struct wl_listener *listener, void *data)
  58 {
  59         struct ivi_output *output;
  60
  61         output = wl_container_of(listener, output, output_destroy);
  62         assert(output->output == data);
  63
  64         output->output = NULL;
  65         wl_list_remove(&output->output_destroy.link);
  66 }
  67
  68 struct ivi_output *
  69 to_ivi_output(struct weston_output *o)
  70 {
  71         struct wl_listener *listener;
  72         struct ivi_output *output;
  73
  74         listener = weston_output_get_destroy_listener(o, handle_output_destroy);
  75         output = wl_container_of(listener, output, output_destroy);
  76
  77         return output;
  78 }
  79
  80 static struct ivi_output *
  81 ivi_ensure_output(struct ivi_compositor *ivi, char *name,
  82                   struct weston_config_section *config)
  83 {
  84         struct ivi_output *output = NULL;
  85         wl_list_for_each(output, &ivi->outputs, link) {
  86                 if (strcmp(output->name, name) == 0) {
  87                         free(name);
  88                         return output;
  89                 }
  90         }
  91
  92         output = zalloc(sizeof *output);
  93         if (!output) {
  94                 free(name);
  95                 return NULL;
  96         }
  97
  98         output->ivi = ivi;
  99         output->name = name;
 100         output->config = config;
 101
 102         output->output = weston_compositor_create_output(ivi->compositor, name);
 103         if (!output->output) {
 104                 free(output->name);
 105                 free(output);
 106                 return NULL;
 107         }
 108
 109         output->output_destroy.notify = handle_output_destroy;
 110         weston_output_add_destroy_listener(output->output,
 111                                            &output->output_destroy);
 112
 113         wl_list_insert(&ivi->outputs, &output->link);
 114         return output;
 115 }
 116
 117 static void
 118 ivi_output_destroy(struct ivi_output *output)
 119 {
 120         weston_output_destroy(output->output);
 121         free(output->name);
 122         wl_list_remove(&output->link);
 123         free(output);
 124 }
 125
 126 static int
 127 count_heads(struct weston_output *output)
 128 {
 129         struct weston_head *iter = NULL;
 130         int n = 0;
 131
 132         while ((iter = weston_output_iterate_heads(output, iter)))
 133                 ++n;
 134
 135         return n;
 136 }
 137
 138 static void
 139 handle_head_destroy(struct wl_listener *listener, void *data)
 140 {
 141         struct weston_head *head = data;
 142         struct weston_output *output;
 143
 144         wl_list_remove(&listener->link);
 145         free(listener);
 146
 147         output = weston_head_get_output(head);
 148
 149         /* On shutdown path, the output might be already gone. */
 150         if (!output)
 151                 return;
 152
 153         /* We're the last head */
 154         if (count_heads(output) <= 1)
 155                 weston_output_destroy(output);
 156 }
 157
 158 static void
 159 add_head_destroyed_listener(struct weston_head *head)
 160 {
 161         /* We already have a destroy listener */
 162         if (weston_head_get_destroy_listener(head, handle_head_destroy))
 163                 return;
 164
 165         struct wl_listener *listener = zalloc(sizeof *listener);
 166         if (!listener)
 167                 return;
 168
 169         listener->notify = handle_head_destroy;
 170         weston_head_add_destroy_listener(head, listener);
 171 }
 172
 173 static int
 174 drm_configure_output(struct ivi_output *output)
 175 {
 176         struct ivi_compositor *ivi = output->ivi;
 177         struct weston_config_section *section = output->config;
 178         enum weston_drm_backend_output_mode mode =
 179                 WESTON_DRM_BACKEND_OUTPUT_PREFERRED;
 180         char *modeline = NULL;
 181         char *gbm_format = NULL;
 182         char *seat = NULL;
 183
 184         if (section) {
 185                 char *m;
 186                 weston_config_section_get_string(section, "mode", &m, "preferred");
 187
 188                 /* This should have been handled earlier */
 189                 assert(strcmp(m, "off") != 0);
 190
 191                 if (ivi->cmdline.use_current_mode || strcmp(m, "current") == 0) {
 192                         mode = WESTON_DRM_BACKEND_OUTPUT_CURRENT;
 193                 } else if (strcmp(m, "preferred") != 0) {
 194                         modeline = m;
 195                         m = NULL;
 196                 }
 197                 free(m);
 198
 199                 weston_config_section_get_string(section, "gbm-format",
 200                                                  &gbm_format, NULL);
 201
 202                 weston_config_section_get_string(section, "seat", &seat, "");
 203         }
 204
 205         if (ivi->drm_api->set_mode(output->output, mode, modeline) < 0) {
 206                 weston_log("Cannot configure output using weston_drm_output_api.\n");
 207                 free(modeline);
 208                 return -1;
 209         }
 210         free(modeline);
 211
 212         ivi->drm_api->set_gbm_format(output->output, gbm_format);
 213         free(gbm_format);
 214
 215         ivi->drm_api->set_seat(output->output, seat);
 216         free(seat);
 217
 218         return 0;
 219 }
 220
 221 #define WINDOWED_DEFAULT_WIDTH 1024
 222 #define WINDOWED_DEFAULT_HEIGHT 768
 223
 224 static int
 225 windowed_configure_output(struct ivi_output *output)
 226 {
 227         struct ivi_compositor *ivi = output->ivi;
 228         struct weston_config_section *section = output->config;
 229         int width = WINDOWED_DEFAULT_WIDTH;
 230         int height = WINDOWED_DEFAULT_HEIGHT;
 231
 232         if (section) {
 233                 char *mode;
 234
 235                 weston_config_section_get_string(section, "mode", &mode, NULL);
 236                 if (!mode || sscanf(mode, "%dx%d", &width, &height) != 2) {
 237                         weston_log("Invalid mode for output %s. Using defaults.\n",
 238                                    output->name);
 239                         width = WINDOWED_DEFAULT_WIDTH;
 240                         height = WINDOWED_DEFAULT_HEIGHT;
 241                 }
 242                 free(mode);
 243         }
 244
 245         if (ivi->cmdline.width)
 246                 width = ivi->cmdline.width;
 247         if (ivi->cmdline.height)
 248                 height = ivi->cmdline.height;
 249         if (ivi->cmdline.scale)
 250                 weston_output_set_scale(output->output, ivi->cmdline.scale);
 251
 252         if (ivi->window_api->output_set_size(output->output, width, height) < 0) {
 253                 weston_log("Cannot configure output '%s' using weston_windowed_output_api.\n",
 254                            output->name);
 255                 return -1;
 256         }
 257
 258         return 0;
 259 }
 260
 261 static int
 262 parse_transform(const char *transform, uint32_t *out)
 263 {
 264         static const struct { const char *name; uint32_t token; } transforms[] = {
 265                 { "normal",     WL_OUTPUT_TRANSFORM_NORMAL },
 266                 { "90",         WL_OUTPUT_TRANSFORM_90 },
 267                 { "180",        WL_OUTPUT_TRANSFORM_180 },
 268                 { "270",        WL_OUTPUT_TRANSFORM_270 },
 269                 { "flipped",    WL_OUTPUT_TRANSFORM_FLIPPED },
 270                 { "flipped-90", WL_OUTPUT_TRANSFORM_FLIPPED_90 },
 271                 { "flipped-180", WL_OUTPUT_TRANSFORM_FLIPPED_180 },
 272                 { "flipped-270", WL_OUTPUT_TRANSFORM_FLIPPED_270 },
 273         };
 274
 275         for (size_t i = 0; i < ARRAY_LENGTH(transforms); i++)
 276                 if (strcmp(transforms[i].name, transform) == 0) {
 277                         *out = transforms[i].token;
 278                         return 0;
 279                 }
 280
 281         *out = WL_OUTPUT_TRANSFORM_NORMAL;
 282         return -1;
 283 }
 284
 285 static int
 286 configure_output(struct ivi_output *output)
 287 {
 288         struct ivi_compositor *ivi = output->ivi;
 289         struct weston_config_section *section = output->config;
 290         int32_t scale = 1;
 291         uint32_t transform = WL_OUTPUT_TRANSFORM_NORMAL;
 292
 293         /*
 294          * This can happen with the wayland backend with 'sprawl'. The config
 295          * is hard-coded, so we don't need to do anything.
 296          */
 297         if (!ivi->drm_api && !ivi->window_api)
 298                 return 0;
 299
 300         if (section) {
 301                 char *t;
 302
 303                 weston_config_section_get_int(section, "scale", &scale, 1);
 304                 weston_config_section_get_string(section, "transform", &t, "normal");
 305                 if (parse_transform(t, &transform) < 0)
 306                         weston_log("Invalid transform \"%s\" for output %s\n",
 307                                    t, output->name);
 308                 free(t);
 309         }
 310
 311         weston_output_set_scale(output->output, scale);
 312         weston_output_set_transform(output->output, transform);
 313
 314         if (ivi->drm_api)
 315                 return drm_configure_output(output);
 316         else
 317                 return windowed_configure_output(output);
 318 }
 319
 320 /*
 321  * Reorgainizes the output's add array into two sections.
 322  * add[0..ret-1] are the heads that failed to get attached.
 323  * add[ret..add_len] are the heads that were successfully attached.
 324  *
 325  * The order between elements in each section is stable.
 326  */
 327 static size_t
 328 try_attach_heads(struct ivi_output *output)
 329 {
 330         size_t fail_len = 0;
 331
 332         for (size_t i = 0; i < output->add_len; ++i) {
 333                 if (weston_output_attach_head(output->output, output->add[i]) < 0) {
 334                         struct weston_head *tmp = output->add[i];
 335                         memmove(&output->add[fail_len + 1], output->add[fail_len],
 336                                 sizeof output->add[0] * (i - fail_len));
 337                         output->add[fail_len++] = tmp;
 338                 }
 339         }
 340
 341         return fail_len;
 342 }
 343
 344 /*
 345  * Like try_attach_heads, this reorganizes the output's add array into a failed
 346  * and successful section.
 347  * i is the number of heads that already failed the previous step.
 348  */
 349 static size_t
 350 try_enable_output(struct ivi_output *output, size_t i)
 351 {
 352         for (; i < output->add_len; ++i) {
 353                 struct weston_head *head;
 354
 355                 if (weston_output_enable(output->output) == 0)
 356                         break;
 357
 358                 head = output->add[output->add_len - 1];
 359                 memmove(&output->add[i + 1], &output->add[i],
 360                         sizeof output->add[0] * (output->add_len - i));
 361                 output->add[i] = head;
 362
 363                 weston_head_detach(head);
 364         }
 365
 366         return i;
 367 }
 368
 369 static int
 370 try_attach_enable_heads(struct ivi_output *output)
 371 {
 372         size_t fail_len;
 373         assert(!output->output->enabled);
 374
 375         fail_len = try_attach_heads(output);
 376
 377         if (configure_output(output) < 0)
 378                 return -1;
 379
 380         fail_len = try_enable_output(output, fail_len);
 381
 382         /* All heads failed to be attached */
 383         if (fail_len == output->add_len)
 384                 return -1;
 385
 386         /* For each successful head attached */
 387         for (size_t i = fail_len; i < output->add_len; ++i)
 388                 add_head_destroyed_listener(output->add[i]);
 389
 390         output->add_len = fail_len;
 391         return 0;
 392 }
 393
 394 static int
 395 process_output(struct ivi_output *output)
 396 {
 397         if (output->output->enabled) {
 398                 output->add_len = try_attach_heads(output);
 399                 return output->add_len == 0 ? 0 : -1;
 400         }
 401
 402         return try_attach_enable_heads(output);
 403 }
 404
 405 static void
 406 head_disable(struct ivi_compositor *ivi, struct weston_head *head)
 407 {
 408         struct weston_output *output;
 409         struct ivi_output *ivi_output;
 410         struct wl_listener *listener;
 411
 412         output = weston_head_get_output(head);
 413         assert(output);
 414
 415         listener = weston_output_get_destroy_listener(output,
 416                                                       handle_output_destroy);
 417         assert(listener);
 418
 419         ivi_output = wl_container_of(listener, ivi_output, output_destroy);
 420         assert(ivi_output->output == output);
 421
 422         weston_head_detach(head);
 423         if (count_heads(ivi_output->output) == 0) {
 424                 ivi_output_destroy(ivi_output);
 425                 weston_output_disable(ivi_output->output);
 426         }
 427 }
 428
 429 static struct weston_config_section *
 430 find_controlling_output_config(struct weston_config *config,
 431                                const char *name)
 432 {
 433         struct weston_config_section *section;
 434         char *same_as;
 435         int depth = 0;
 436
 437         same_as = strdup(name);
 438         do {
 439                 section = weston_config_get_section(config, "output",
 440                                                     "name", same_as);
 441                 if (!section && depth > 0)
 442                         weston_log("Configuration error: output section reffered"
 443                                    "to by same-as=%s not found.\n", same_as);
 444                 free(same_as);
 445
 446                 if (!section)
 447                         return NULL;
 448
 449                 if (depth++ > 8) {
 450                         weston_log("Configuration error: same-as nested too "
 451                                    "deep for output '%s'.\n", name);
 452                         return NULL;
 453                 }
 454
 455                 weston_config_section_get_string(section, "same-as",
 456                                                  &same_as, NULL);
 457         } while (same_as);
 458
 459         return section;
 460 }
 461
 462 static void
 463 head_prepare_enable(struct ivi_compositor *ivi, struct weston_head *head)
 464 {
 465         const char *name = weston_head_get_name(head);
 466         struct weston_config_section *section;
 467         struct ivi_output *output;
 468         char *output_name = NULL;
 469
 470         section = find_controlling_output_config(ivi->config, name);
 471         if (section) {
 472                 char *mode;
 473
 474                 weston_config_section_get_string(section, "mode", &mode, NULL);
 475                 if (mode && strcmp(mode, "off") == 0) {
 476                         free(mode);
 477                         return;
 478                 }
 479                 free(mode);
 480
 481                 weston_config_section_get_string(section, "name",
 482                                                  &output_name, NULL);
 483         } else {
 484                 output_name = strdup(name);
 485         }
 486
 487         if (!output_name)
 488                 return;
 489
 490         output = ivi_ensure_output(ivi, output_name, section);
 491         if (!output)
 492                 return;
 493
 494         if (output->add_len >= ARRAY_LENGTH(output->add))
 495                 return;
 496
 497         output->add[output->add_len++] = head;
 498 }
 499
 500 static void
 501 heads_changed(struct wl_listener *listener, void *arg)
 502 {
 503         struct weston_compositor *compositor = arg;
 504         struct weston_head *head = NULL;
 505         struct ivi_compositor *ivi = to_ivi_compositor(compositor);
 506         struct ivi_output *output;
 507
 508         while ((head = weston_compositor_iterate_heads(ivi->compositor, head))) {
 509                 bool connected = weston_head_is_connected(head);
 510                 bool enabled = weston_head_is_enabled(head);
 511                 bool changed = weston_head_is_device_changed(head);
 512                 bool non_desktop = weston_head_is_non_desktop(head);
 513
 514                 if (connected && !enabled && !non_desktop)
 515                         head_prepare_enable(ivi, head);
 516                 else if (!connected && enabled)
 517                         head_disable(ivi, head);
 518                 else if (enabled && changed)
 519                         weston_log("Detected a monitor change on head '%s', "
 520                                    "not bothering to do anything about it.\n",
 521                                    weston_head_get_name(head));
 522
 523                 weston_head_reset_device_changed(head);
 524         }
 525
 526         wl_list_for_each(output, &ivi->outputs, link) {
 527                 if (output->add_len == 0)
 528                         continue;
 529
 530                 if (process_output(output) < 0) {
 531                         output->add_len = 0;
 532                         ivi->init_failed = true;
 533                 }
 534         }
 535 }
 536
 537 static int
 538 load_drm_backend(struct ivi_compositor *ivi, int *argc, char *argv[])
 539 {
 540         struct weston_drm_backend_config config = {
 541                 .base = {
 542                         .struct_version = WESTON_DRM_BACKEND_CONFIG_VERSION,
 543                         .struct_size = sizeof config,
 544                 },
 545         };
 546         struct weston_config_section *section;
 547         int use_current_mode = 0;
 548         int use_pixman = 0;
 549         int use_shadow;
 550         int ret;
 551
 552         const struct weston_option options[] = {
 553                 { WESTON_OPTION_STRING, "seat", 0, &config.seat_id },
 554                 { WESTON_OPTION_INTEGER, "tty", 0, &config.tty },
 555                 { WESTON_OPTION_STRING, "drm-device", 0, &config.specific_device },
 556                 { WESTON_OPTION_BOOLEAN, "current-mode", 0, &use_current_mode },
 557                 { WESTON_OPTION_BOOLEAN, "use-pixman", 0, &use_pixman },
 558         };
 559
 560         parse_options(options, ARRAY_LENGTH(options), argc, argv);
 561         config.use_pixman = use_pixman;
 562         ivi->cmdline.use_current_mode = use_current_mode;
 563
 564         section = weston_config_get_section(ivi->config, "core", NULL, NULL);
 565         weston_config_section_get_string(section, "gbm-format",
 566                                          &config.gbm_format, NULL);
 567         weston_config_section_get_uint(section, "pageflip-timeout",
 568                                        &config.pageflip_timeout, 0);
 569         weston_config_section_get_bool(section, "pixman-shadow", &use_shadow, 1);
 570         config.use_pixman_shadow = use_shadow;
 571
 572         ret = weston_compositor_load_backend(ivi->compositor, WESTON_BACKEND_DRM,
 573                                              &config.base);
 574         if (ret < 0)
 575                 return ret;
 576
 577         ivi->drm_api = weston_drm_output_get_api(ivi->compositor);
 578         if (!ivi->drm_api) {
 579                 weston_log("Cannot use drm output api.\n");
 580                 ret = -1;
 581                 goto error;
 582         }
 583
 584 error:
 585         free(config.gbm_format);
 586         free(config.seat_id);
 587         return ret;
 588 }
 589
 590 static void
 591 windowed_parse_common_options(struct ivi_compositor *ivi, int *argc, char *argv[],
 592                               bool *use_pixman, bool *fullscreen, int *output_count)
 593 {
 594         struct weston_config_section *section;
 595         int pixman;
 596         int fs = 0;
 597
 598         const struct weston_option options[] = {
 599                 { WESTON_OPTION_INTEGER, "width", 0, &ivi->cmdline.width },
 600                 { WESTON_OPTION_INTEGER, "height", 0, &ivi->cmdline.height },
 601                 { WESTON_OPTION_INTEGER, "scale", 0, &ivi->cmdline.scale },
 602                 { WESTON_OPTION_BOOLEAN, "use-pixman", 0, &pixman },
 603                 { WESTON_OPTION_BOOLEAN, "fullscreen", 0, &fs },
 604                 { WESTON_OPTION_INTEGER, "output-count", 0, output_count },
 605         };
 606
 607         section = weston_config_get_section(ivi->config, "core", NULL, NULL);
 608         weston_config_section_get_bool(section, "use-pixman", &pixman, 0);
 609
 610         *output_count = 1;
 611         parse_options(options, ARRAY_LENGTH(options), argc, argv);
 612         *use_pixman = pixman;
 613         *fullscreen = fs;
 614 }
 615
 616 static int
 617 windowed_create_outputs(struct ivi_compositor *ivi, int output_count,
 618                         const char *match_prefix, const char *name_prefix)
 619 {
 620         struct weston_config_section *section = NULL;
 621         const char *section_name;
 622         char *default_output = NULL;
 623         int i = 0;
 624         size_t match_len = strlen(match_prefix);
 625
 626         while (weston_config_next_section(ivi->config, &section, &section_name)) {
 627                 char *output_name;
 628
 629                 if (i >= output_count)
 630                         break;
 631
 632                 if (strcmp(section_name, "output") != 0)
 633                         continue;
 634
 635                 weston_config_section_get_string(section, "name", &output_name, NULL);
 636                 if (output_name == NULL)
 637                         continue;
 638                 if (strncmp(output_name, match_prefix, match_len) != 0) {
 639                         free(output_name);
 640                         continue;
 641                 }
 642
 643                 if (ivi->window_api->create_head(ivi->compositor, output_name) < 0) {
 644                         free(output_name);
 645                         return -1;
 646                 }
 647
 648                 free(output_name);
 649                 ++i;
 650         }
 651
 652         for (; i < output_count; ++i) {
 653                 if (asprintf(&default_output, "%s%d", name_prefix, i) < 0)
 654                         return -1;
 655
 656                 if (ivi->window_api->create_head(ivi->compositor, default_output) < 0) {
 657                         free(default_output);
 658                         return -1;
 659                 }
 660
 661                 free(default_output);
 662         }
 663
 664         return 0;
 665 }
 666
 667 static int
 668 load_wayland_backend(struct ivi_compositor *ivi, int *argc, char *argv[])
 669 {
 670         struct weston_wayland_backend_config config = {
 671                 .base = {
 672                         .struct_version = WESTON_WAYLAND_BACKEND_CONFIG_VERSION,
 673                         .struct_size = sizeof config,
 674                 },
 675         };
 676         struct weston_config_section *section;
 677         int sprawl = 0;
 678         int output_count;
 679         int ret;
 680
 681         const struct weston_option options[] = {
 682                 { WESTON_OPTION_STRING, "display", 0, &config.display_name },
 683                 { WESTON_OPTION_STRING, "sprawl", 0, &sprawl },
 684         };
 685
 686         windowed_parse_common_options(ivi, argc, argv, &config.use_pixman,
 687                                       &config.fullscreen, &output_count);
 688
 689         parse_options(options, ARRAY_LENGTH(options), argc, argv);
 690         config.sprawl = sprawl;
 691
 692         section = weston_config_get_section(ivi->config, "shell", NULL, NULL);
 693         weston_config_section_get_string(section, "cursor-theme",
 694                                          &config.cursor_theme, NULL);
 695         weston_config_section_get_int(section, "cursor-size",
 696                                       &config.cursor_size, 32);
 697
 698         ret = weston_compositor_load_backend(ivi->compositor, WESTON_BACKEND_WAYLAND,
 699                                              &config.base);
 700
 701         free(config.cursor_theme);
 702         free(config.display_name);
 703
 704         if (ret < 0)
 705                 return ret;
 706
 707         ivi->window_api = weston_windowed_output_get_api(ivi->compositor);
 708
 709         /*
 710          * We will just assume if load_backend() finished cleanly and
 711          * windowed_output_api is not present that wayland backend is started
 712          * with --sprawl or runs on fullscreen-shell. In this case, all values
 713          * are hardcoded, so nothing can be configured; simply create and
 714          * enable an output.
 715          */
 716         if (ivi->window_api == NULL)
 717                 return 0;
 718
 719         return windowed_create_outputs(ivi, output_count, "WL", "wayland");
 720 }
 721
 722 static int
 723 load_x11_backend(struct ivi_compositor *ivi, int *argc, char *argv[])
 724 {
 725         struct weston_x11_backend_config config = {
 726                 .base = {
 727                         .struct_version = WESTON_X11_BACKEND_CONFIG_VERSION,
 728                         .struct_size = sizeof config,
 729                 },
 730         };
 731         int no_input = 0;
 732         int output_count;
 733         int ret;
 734
 735         const struct weston_option options[] = {
 736                { WESTON_OPTION_BOOLEAN, "no-input", 0, &no_input },
 737         };
 738
 739         windowed_parse_common_options(ivi, argc, argv, &config.use_pixman,
 740                                       &config.fullscreen, &output_count);
 741
 742         parse_options(options, ARRAY_LENGTH(options), argc, argv);
 743         config.no_input = no_input;
 744
 745         ret = weston_compositor_load_backend(ivi->compositor, WESTON_BACKEND_X11,
 746                                              &config.base);
 747
 748         if (ret < 0)
 749                 return ret;
 750
 751         ivi->window_api = weston_windowed_output_get_api(ivi->compositor);
 752         if (!ivi->window_api) {
 753                 weston_log("Cannot use weston_windowed_output_api.\n");
 754                 return -1;
 755         }
 756
 757         return windowed_create_outputs(ivi, output_count, "X", "screen");
 758 }
 759
 760 static int
 761 load_backend(struct ivi_compositor *ivi, const char *backend,
 762              int *argc, char *argv[])
 763 {
 764         if (strcmp(backend, "drm-backend.so") == 0) {
 765                 return load_drm_backend(ivi, argc, argv);
 766         } else if (strcmp(backend, "wayland-backend.so") == 0) {
 767                 return load_wayland_backend(ivi, argc, argv);
 768         } else if (strcmp(backend, "x11-backend.so") == 0) {
 769                 return load_x11_backend(ivi, argc, argv);
 770         }
 771
 772         weston_log("fatal: unknown backend '%s'.\n", backend);
 773         return -1;
 774 }
 775
 776 static char *
 777 choose_default_backend(void)
 778 {
 779         char *backend = NULL;
 780
 781         if (getenv("WAYLAND_DISPLAY") || getenv("WAYLAND_SOCKET"))
 782                 backend = strdup("wayland-backend.so");
 783         else if (getenv("DISPLAY"))
 784                 backend = strdup("x11-backend.so");
 785         else
 786                 backend = strdup("drm-backend.so");
 787
 788         return backend;
 789 }
 790
 791 static int
 792 compositor_init_config(struct weston_compositor *compositor,
 793                        struct weston_config *config)
 794 {
 795         struct xkb_rule_names xkb_names;
 796         struct weston_config_section *section;
 797         int repaint_msec;
 798         int vt_switching;
 799         int require_input;
 800
 801         /* agl-compositor.ini [keyboard] */
 802         section = weston_config_get_section(config, "keyboard", NULL, NULL);
 803         weston_config_section_get_string(section, "keymap_rules",
 804                                          (char **) &xkb_names.rules, NULL);
 805         weston_config_section_get_string(section, "keymap_model",
 806                                          (char **) &xkb_names.model, NULL);
 807         weston_config_section_get_string(section, "keymap_layout",
 808                                          (char **) &xkb_names.layout, NULL);
 809         weston_config_section_get_string(section, "keymap_variant",
 810                                          (char **) &xkb_names.variant, NULL);
 811         weston_config_section_get_string(section, "keymap_options",
 812                                          (char **) &xkb_names.options, NULL);
 813
 814         if (weston_compositor_set_xkb_rule_names(compositor, &xkb_names) < 0)
 815                 return -1;
 816
 817         weston_config_section_get_int(section, "repeat-rate",
 818                                       &compositor->kb_repeat_rate, 40);
 819         weston_config_section_get_int(section, "repeat-delay",
 820                                       &compositor->kb_repeat_delay, 400);
 821
 822         weston_config_section_get_bool(section, "vt-switching",
 823                                        &vt_switching, true);
 824         compositor->vt_switching = vt_switching;
 825
 826         /* agl-compositor.ini [core] */
 827         section = weston_config_get_section(config, "core", NULL, NULL);
 828
 829         weston_config_section_get_bool(section, "require-input", &require_input, true);
 830         compositor->require_input = require_input;
 831
 832         weston_config_section_get_int(section, "repaint-window", &repaint_msec,
 833                                       compositor->repaint_msec);
 834         if (repaint_msec < -10 || repaint_msec > 1000) {
 835                 weston_log("Invalid repaint_window value in config: %d\n",
 836                            repaint_msec);
 837         } else {
 838                 compositor->repaint_msec = repaint_msec;
 839         }
 840         weston_log("Output repaint window is %d ms maximum.\n",
 841                    compositor->repaint_msec);
 842
 843         return 0;
 844 }
 845
 846 struct ivi_surface *
 847 to_ivi_surface(struct weston_surface *surface)
 848 {
 849         struct weston_desktop_surface *dsurface;
 850
 851         dsurface = weston_surface_get_desktop_surface(surface);
 852         if (!dsurface)
 853                 return NULL;
 854
 855         return weston_desktop_surface_get_user_data(dsurface);
 856 }
 857
 858 static void
 859 activate_binding(struct weston_seat *seat,
 860                  struct weston_view *focus_view)
 861 {
 862         struct weston_surface *focus = focus_view->surface;
 863         struct weston_surface *main_surface =
 864                 weston_surface_get_main_surface(focus);
 865         struct ivi_surface *surface;
 866
 867         surface = to_ivi_surface(main_surface);
 868         if (!surface || surface->role != IVI_SURFACE_ROLE_DESKTOP)
 869                 return;
 870
 871         weston_seat_set_keyboard_focus(seat, focus);
 872 }
 873
 874 static void
 875 click_to_activate_binding(struct weston_pointer *pointer,
 876                           const struct timespec *time,
 877                           uint32_t button, void *data)
 878 {
 879         if (pointer->grab != &pointer->default_grab)
 880                 return;
 881         if (pointer->focus == NULL)
 882                 return;
 883
 884         activate_binding(pointer->seat, pointer->focus);
 885 }
 886
 887 static void
 888 touch_to_activate_binding(struct weston_touch *touch,
 889                           const struct timespec *time,
 890                           void *data)
 891 {
 892         if (touch->grab != &touch->default_grab)
 893                 return;
 894         if (touch->focus == NULL)
 895                 return;
 896
 897         activate_binding(touch->seat, touch->focus);
 898 }
 899
 900 static void
 901 add_bindings(struct weston_compositor *compositor)
 902 {
 903         weston_compositor_add_button_binding(compositor, BTN_LEFT, 0,
 904                                              click_to_activate_binding,
 905                                              NULL);
 906         weston_compositor_add_button_binding(compositor, BTN_RIGHT, 0,
 907                                              click_to_activate_binding,
 908                                              NULL);
 909         weston_compositor_add_touch_binding(compositor, 0,
 910                                             touch_to_activate_binding,
 911                                             NULL);
 912 }
 913
 914 static int
 915 create_listening_socket(struct wl_display *display, const char *socket_name)
 916 {
 917         if (socket_name) {
 918                 if (wl_display_add_socket(display, socket_name)) {
 919                         weston_log("fatal: failed to add socket: %s\n",
 920                                    strerror(errno));
 921                         return -1;
 922                 }
 923         } else {
 924                 socket_name = wl_display_add_socket_auto(display);
 925                 if (!socket_name) {
 926                         weston_log("fatal: failed to add socket: %s\n",
 927                                    strerror(errno));
 928                         return -1;
 929                 }
 930         }
 931
 932         setenv("WAYLAND_DISPLAY", socket_name, 1);
 933
 934         return 0;
 935 }
 936
 937 static bool
 938 global_filter(const struct wl_client *client, const struct wl_global *global,
 939               void *data)
 940 {
 941 #if 0
 942         struct ivi_compositor *ivi = data;
 943         const struct wl_interface *iface = wl_global_get_interface(global);
 944
 945         if (iface == &agl_shell_interface)
 946                 return client == ivi->shell_client.client;
 947 #endif
 948
 949         return true;
 950 }
 951
 952 static int
 953 load_config(struct weston_config **config, bool no_config,
 954             const char *config_file)
 955 {
 956         const char *file = "agl-compositor.ini";
 957         const char *full_path;
 958
 959         if (config_file)
 960                 file = config_file;
 961
 962         if (!no_config)
 963                 *config = weston_config_parse(file);
 964
 965         if (*config) {
 966                 full_path = weston_config_get_full_path(*config);
 967
 968                 weston_log("Using config file '%s'.\n", full_path);
 969                 setenv(WESTON_CONFIG_FILE_ENV_VAR, full_path, 1);
 970
 971                 return 0;
 972         }
 973
 974         if (config_file && !no_config) {
 975                 weston_log("fatal: error opening or reading config file '%s'.\n",
 976                         config_file);
 977
 978                 return -1;
 979         }
 980
 981         weston_log("Starting with no config file.\n");
 982         setenv(WESTON_CONFIG_FILE_ENV_VAR, "", 1);
 983
 984         return 0;
 985 }
 986
 987 static FILE *logfile;
 988 //static struct weston_log_scope *log_scope;
 989 //static struct weston_log_scope *protocol_scope;
 990
 991 static int
 992 log_timestamp(void)
 993 {
 994         static int cached_tm_mday = -1;
 995         struct timespec ts;
 996         struct tm brokendown_time;
 997         char buf[128];
 998
 999         clock_gettime(CLOCK_REALTIME, &ts);
1000         if (!localtime_r(&ts.tv_sec, &brokendown_time))
1001                 return fprintf(logfile, "[(NULL)localtime] ");
1002
1003         if (brokendown_time.tm_mday != cached_tm_mday) {
1004                 strftime(buf, sizeof buf, "%Y-%m-%d %Z", &brokendown_time);
1005                 fprintf(logfile, "Date: %s\n", buf);
1006
1007                 cached_tm_mday = brokendown_time.tm_mday;
1008         }
1009
1010         strftime(buf, sizeof buf, "%H:%M:%S", &brokendown_time);
1011
1012         return fprintf(logfile, "[%s.%03ld] ", buf, ts.tv_nsec / 1000000);
1013 }
1014
1015 static void
1016 custom_handler(const char *fmt, va_list arg)
1017 {
1018         log_timestamp();
1019         fprintf(logfile, "libwayland: ");
1020         vfprintf(logfile, fmt, arg);
1021 }
1022
1023 static void
1024 log_file_open(const char *filename)
1025 {
1026         wl_log_set_handler_server(custom_handler);
1027
1028         if (filename)
1029                 logfile = fopen(filename, "a");
1030
1031         if (!logfile) {
1032                 logfile = stderr;
1033         } else {
1034                 os_fd_set_cloexec(fileno(logfile));
1035                 setvbuf(logfile, NULL, _IOLBF, 256);
1036         }
1037 }
1038
1039 static void
1040 log_file_close(void)
1041 {
1042         if (logfile && logfile != stderr)
1043                 fclose(logfile);
1044         logfile = stderr;
1045 }
1046
1047 static int
1048 vlog(const char *fmt, va_list ap)
1049 {
1050         int l;
1051
1052         l = log_timestamp();
1053         l += vfprintf(logfile, fmt, ap);
1054
1055         return l;
1056 }
1057
1058 static int
1059 vlog_continue(const char *fmt, va_list ap)
1060 {
1061         return vfprintf(logfile, fmt, ap);
1062 }
1063
1064 static int
1065 on_term_signal(int signo, void *data)
1066 {
1067         struct wl_display *display = data;
1068
1069         weston_log("caught signal %d\n", signo);
1070         wl_display_terminate(display);
1071
1072         return 1;
1073 }
1074
1075 static void
1076 handle_exit(struct weston_compositor *compositor)
1077 {
1078         wl_display_terminate(compositor->wl_display);
1079 }
1080
1081 static void
1082 usage(int error_code)
1083 {
1084         FILE *out = error_code == EXIT_SUCCESS ? stdout : stderr;
1085         fprintf(out,
1086                 "Usage: agl-compositor [OPTIONS]\n"
1087                 "\n"
1088                 "This is " PACKAGE_STRING ", the reference compositor for\n"
1089                 "Automotive Grade Linux. Weston-ivi supports multiple backends, and depending\n"
1090                 "on which backend is in use different options will be accepted.\n"
1091                 "\n"
1092                 "Core options:\n"
1093                 "\n"
1094                 "  --version\t\tPrint agl-compositor version\n"
1095                 "  -B, --backend=MODULE\tBackend module, one of\n"
1096                         "\t\t\t\tdrm-backend.so\n"
1097                         "\t\t\t\twayland-backend.so\n"
1098                         "\t\t\t\tx11-backend.so\n"
1099                 "  -S, --socket=NAME\tName of socket to listen on\n"
1100                 "  --log=FILE\t\tLog to the given file\n"
1101                 "  -c, --config=FILE\tConfig file to load, defaults to agl-compositor.ini\n"
1102                 "  --no-config\t\tDo not read agl-compositor.ini\n"
1103                 "  --debug\t\tEnable debug extension\n"
1104                 "  -h, --help\t\tThis help message\n"
1105                 "\n");
1106         exit(error_code);
1107 }
1108
1109 int main(int argc, char *argv[])
1110 {
1111         struct ivi_compositor ivi = { 0 };
1112         struct wl_display *display;
1113         struct wl_event_loop *loop;
1114         struct wl_event_source *signals[3] = { 0 };
1115         struct weston_config_section *section;
1116         /* Command line options */
1117         char *backend = NULL;
1118         char *socket_name = NULL;
1119         char *log = NULL;
1120         int help = 0;
1121         int version = 0;
1122         int no_config = 0;
1123         char *config_file = NULL;
1124         int debug_protocol = 0;
1125
1126         const struct weston_option core_options[] = {
1127                 { WESTON_OPTION_STRING, "backend", 'B', &backend },
1128                 { WESTON_OPTION_STRING, "socket", 'S', &socket_name },
1129                 { WESTON_OPTION_STRING, "log", 0, &log },
1130                 { WESTON_OPTION_BOOLEAN, "help", 'h', &help },
1131                 { WESTON_OPTION_BOOLEAN, "version", 0, &version },
1132                 { WESTON_OPTION_BOOLEAN, "no-config", 0, &no_config },
1133                 { WESTON_OPTION_STRING, "config", 'c', &config_file },
1134                 { WESTON_OPTION_BOOLEAN, "debug", 0, &debug_protocol },
1135         };
1136
1137         wl_list_init(&ivi.outputs);
1138         wl_list_init(&ivi.surfaces);
1139         wl_list_init(&ivi.shell_clients);
1140         wl_list_init(&ivi.pending_surfaces);
1141
1142         /* Prevent any clients we spawn getting our stdin */
1143         os_fd_set_cloexec(STDIN_FILENO);
1144
1145         parse_options(core_options, ARRAY_LENGTH(core_options), &argc, argv);
1146
1147         if (help)
1148                 usage(EXIT_SUCCESS);
1149
1150         if (version) {
1151                 printf(PACKAGE_STRING "\n");
1152                 return EXIT_SUCCESS;
1153         }
1154
1155         log_file_open(log);
1156         weston_log_set_handler(vlog, vlog_continue);
1157
1158         if (load_config(&ivi.config, no_config, config_file) < 0)
1159                 goto error_signals;
1160         section = weston_config_get_section(ivi.config, "core", NULL, NULL);
1161         if (!backend) {
1162                 weston_config_section_get_string(section, "backend", &backend,
1163                                                  NULL);
1164                 if (!backend)
1165                         backend = choose_default_backend();
1166         }
1167
1168         display = wl_display_create();
1169         loop = wl_display_get_event_loop(display);
1170
1171         wl_display_set_global_filter(display,
1172                                      global_filter, &ivi);
1173
1174         /* Register signal handlers so we shut down cleanly */
1175
1176         signals[0] = wl_event_loop_add_signal(loop, SIGTERM, on_term_signal,
1177                                               display);
1178         signals[1] = wl_event_loop_add_signal(loop, SIGINT, on_term_signal,
1179                                               display);
1180         signals[2] = wl_event_loop_add_signal(loop, SIGQUIT, on_term_signal,
1181                                               display);
1182
1183         for (size_t i = 0; i < ARRAY_LENGTH(signals); ++i)
1184                 if (!signals[i])
1185                         goto error_signals;
1186
1187 #if 0
1188         log_ctx = weston_log_ctx_compositor_create();
1189         if (!log_ctx) {
1190                 weston_log("Failed to initialize weston debug framework.\n");
1191                 goto error_signals;
1192         }
1193 #endif
1194
1195         ivi.compositor = weston_compositor_create(display, &ivi);
1196         if (!ivi.compositor) {
1197                 weston_log("fatal: failed to create compositor.\n");
1198                 goto error_signals;
1199         }
1200
1201 #if 0
1202         if (debug_protocol)
1203                 weston_compositor_enable_debug_protocol(ivi.compositor);
1204 #endif
1205
1206         if (compositor_init_config(ivi.compositor, ivi.config) < 0)
1207                 goto error_compositor;
1208
1209         if (load_backend(&ivi, backend, &argc, argv) < 0) {
1210                 weston_log("fatal: failed to create compositor backend.\n");
1211                 goto error_compositor;
1212         }
1213
1214         ivi.heads_changed.notify = heads_changed;
1215         weston_compositor_add_heads_changed_listener(ivi.compositor,
1216                                                      &ivi.heads_changed);
1217
1218         if (ivi_desktop_init(&ivi) < 0)
1219                 goto error_compositor;
1220
1221         if (ivi_shell_init(&ivi) < 0)
1222                 goto error_compositor;
1223
1224         add_bindings(ivi.compositor);
1225
1226         weston_compositor_flush_heads_changed(ivi.compositor);
1227
1228         if (create_listening_socket(display, socket_name) < 0)
1229                 goto error_compositor;
1230
1231         ivi.compositor->exit = handle_exit;
1232
1233         weston_compositor_wake(ivi.compositor);
1234
1235         ivi_shell_create_global(&ivi);
1236         ivi_launch_shell_client(&ivi);
1237
1238         wl_display_run(display);
1239
1240         wl_display_destroy_clients(display);
1241
1242 error_compositor:
1243         weston_compositor_destroy(ivi.compositor);
1244
1245 error_signals:
1246         for (size_t i = 0; i < ARRAY_LENGTH(signals); ++i)
1247                 if (signals[i])
1248                         wl_event_source_remove(signals[i]);
1249
1250         wl_display_destroy(display);
1251
1252         log_file_close();
1253         if (ivi.config)
1254                 weston_config_destroy(ivi.config);
1255 }