src/compositor-wayland.c

   1 /*
   2  * Copyright © 2010-2011 Benjamin Franzke
   3  *
   4  * Permission to use, copy, modify, distribute, and sell this software and
   5  * its documentation for any purpose is hereby granted without fee, provided
   6  * that the above copyright notice appear in all copies and that both that
   7  * copyright notice and this permission notice appear in supporting
   8  * documentation, and that the name of the copyright holders not be used in
   9  * advertising or publicity pertaining to distribution of the software
  10  * without specific, written prior permission.  The copyright holders make
  11  * no representations about the suitability of this software for any
  12  * purpose.  It is provided "as is" without express or implied warranty.
  13  *
  14  * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
  15  * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
  16  * FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
  17  * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
  18  * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
  19  * CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
  20  * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  21  */
  22
  23 #ifdef HAVE_CONFIG_H
  24 #include <config.h>
  25 #endif
  26
  27 #include <stddef.h>
  28 #define _GNU_SOURCE
  29 #include <stdio.h>
  30 #include <stdlib.h>
  31 #include <string.h>
  32 #include <fcntl.h>
  33 #include <unistd.h>
  34
  35 #include <wayland-client.h>
  36 #include <wayland-egl.h>
  37
  38 #include <GLES2/gl2.h>
  39 #include <GLES2/gl2ext.h>
  40 #include <EGL/egl.h>
  41 #include <EGL/eglext.h>
  42
  43 #include "compositor.h"
  44
  45 struct wayland_compositor {
  46         struct weston_compositor         base;
  47
  48         struct wl_egl_pixmap            *dummy_pixmap;
  49         EGLSurface                       dummy_egl_surface;;
  50
  51         struct {
  52                 struct wl_display *display;
  53                 struct wl_compositor *compositor;
  54                 struct wl_shell *shell;
  55                 struct wl_output *output;
  56
  57                 struct {
  58                         int32_t x, y, width, height;
  59                 } screen_allocation;
  60
  61                 struct wl_event_source *wl_source;
  62                 uint32_t event_mask;
  63         } parent;
  64
  65         struct {
  66                 int32_t top, bottom, left, right;
  67                 GLuint texture;
  68                 int32_t width, height;
  69         } border;
  70
  71         struct wl_list input_list;
  72 };
  73
  74 struct wayland_output {
  75         struct weston_output    base;
  76
  77         struct {
  78                 struct wl_surface       *surface;
  79                 struct wl_shell_surface *shell_surface;
  80                 struct wl_egl_window    *egl_window;
  81         } parent;
  82         EGLSurface egl_surface;
  83         struct weston_mode      mode;
  84 };
  85
  86 struct wayland_input {
  87         struct wayland_compositor *compositor;
  88         struct wl_input_device *input_device;
  89         struct wl_list link;
  90 };
  91
  92
  93 static int
  94 texture_border(struct wayland_output *output)
  95 {
  96         struct wayland_compositor *c =
  97                 (struct wayland_compositor *) output->base.compositor;
  98         GLfloat *d;
  99         unsigned int *p;
 100         int i, j, k, n;
 101         GLfloat x[4], y[4], u[4], v[4];
 102
 103         x[0] = -c->border.left;
 104         x[1] = 0;
 105         x[2] = output->base.current->width;
 106         x[3] = output->base.current->width + c->border.right;
 107
 108         y[0] = -c->border.top;
 109         y[1] = 0;
 110         y[2] = output->base.current->height;
 111         y[3] = output->base.current->height + c->border.bottom;
 112
 113         u[0] = 0.0;
 114         u[1] = (GLfloat) c->border.left / c->border.width;
 115         u[2] = (GLfloat) (c->border.width - c->border.right) / c->border.width;
 116         u[3] = 1.0;
 117
 118         v[0] = 0.0;
 119         v[1] = (GLfloat) c->border.top / c->border.height;
 120         v[2] = (GLfloat) (c->border.height - c->border.bottom) / c->border.height;
 121         v[3] = 1.0;
 122
 123         n = 8;
 124         d = wl_array_add(&c->base.vertices, n * 16 * sizeof *d);
 125         p = wl_array_add(&c->base.indices, n * 6 * sizeof *p);
 126
 127         k = 0;
 128         for (i = 0; i < 3; i++)
 129                 for (j = 0; j < 3; j++) {
 130
 131                         if (i == 1 && j == 1)
 132                                 continue;
 133
 134                         d[ 0] = x[i];
 135                         d[ 1] = y[j];
 136                         d[ 2] = u[i];
 137                         d[ 3] = v[j];
 138
 139                         d[ 4] = x[i];
 140                         d[ 5] = y[j + 1];
 141                         d[ 6] = u[i];
 142                         d[ 7] = v[j + 1];
 143
 144                         d[ 8] = x[i + 1];
 145                         d[ 9] = y[j];
 146                         d[10] = u[i + 1];
 147                         d[11] = v[j];
 148
 149                         d[12] = x[i + 1];
 150                         d[13] = y[j + 1];
 151                         d[14] = u[i + 1];
 152                         d[15] = v[j + 1];
 153
 154                         p[0] = k + 0;
 155                         p[1] = k + 1;
 156                         p[2] = k + 2;
 157                         p[3] = k + 2;
 158                         p[4] = k + 1;
 159                         p[5] = k + 3;
 160
 161                         d += 16;
 162                         p += 6;
 163                         k += 4;
 164                 }
 165
 166         return k / 4;
 167 }
 168
 169 static void
 170 draw_border(struct wayland_output *output)
 171 {
 172         struct wayland_compositor *c =
 173                 (struct wayland_compositor *) output->base.compositor;
 174         struct weston_shader *shader = &c->base.texture_shader;
 175         GLfloat *v;
 176         int n;
 177
 178         glDisable(GL_BLEND);
 179         glUseProgram(shader->program);
 180         c->base.current_shader = shader;
 181
 182         glUniformMatrix4fv(shader->proj_uniform,
 183                            1, GL_FALSE, output->base.matrix.d);
 184
 185         glUniform1i(shader->tex_uniform, 0);
 186         glUniform1f(shader->alpha_uniform, 1);
 187         glUniform1f(shader->texwidth_uniform, 1);
 188
 189         n = texture_border(output);
 190
 191         glBindTexture(GL_TEXTURE_2D, c->border.texture);
 192
 193         v = c->base.vertices.data;
 194         glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 4 * sizeof *v, &v[0]);
 195         glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 4 * sizeof *v, &v[2]);
 196         glEnableVertexAttribArray(0);
 197         glEnableVertexAttribArray(1);
 198
 199         glDrawElements(GL_TRIANGLES, n * 6,
 200                        GL_UNSIGNED_INT, c->base.indices.data);
 201
 202         glDisableVertexAttribArray(1);
 203         glDisableVertexAttribArray(0);
 204
 205         c->base.vertices.size = 0;
 206         c->base.indices.size = 0;
 207 }
 208
 209 static void
 210 create_border(struct wayland_compositor *c)
 211 {
 212         pixman_image_t *image;
 213
 214         image = load_image(DATADIR "/weston/border.png");
 215         if (!image) {
 216                 fprintf(stderr, "could'nt load border image\n");
 217                 return;
 218         }
 219
 220         c->border.width = pixman_image_get_width(image);
 221         c->border.height = pixman_image_get_height(image);
 222
 223         glGenTextures(1, &c->border.texture);
 224         glBindTexture(GL_TEXTURE_2D, c->border.texture);
 225         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
 226         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
 227         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
 228         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
 229
 230         glTexImage2D(GL_TEXTURE_2D, 0, GL_BGRA_EXT,
 231                      c->border.width,
 232                      c->border.height,
 233                      0, GL_BGRA_EXT, GL_UNSIGNED_BYTE,
 234                      pixman_image_get_data(image));
 235
 236         c->border.top = 25;
 237         c->border.bottom = 50;
 238         c->border.left = 25;
 239         c->border.right = 25;
 240
 241         pixman_image_unref(image);
 242 }
 243
 244 static int
 245 wayland_input_create(struct wayland_compositor *c)
 246 {
 247         struct weston_input_device *input;
 248
 249         input = malloc(sizeof *input);
 250         if (input == NULL)
 251                 return -1;
 252
 253         memset(input, 0, sizeof *input);
 254         weston_input_device_init(input, &c->base);
 255
 256         c->base.input_device = &input->input_device;
 257
 258         return 0;
 259 }
 260
 261 static int
 262 wayland_compositor_init_egl(struct wayland_compositor *c)
 263 {
 264         EGLint major, minor;
 265         EGLint n;
 266         EGLint config_attribs[] = {
 267                 EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
 268                 EGL_RED_SIZE, 1,
 269                 EGL_GREEN_SIZE, 1,
 270                 EGL_BLUE_SIZE, 1,
 271                 EGL_ALPHA_SIZE, 1,
 272                 EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
 273                 EGL_NONE
 274         };
 275         static const EGLint context_attribs[] = {
 276                 EGL_CONTEXT_CLIENT_VERSION, 2,
 277                 EGL_NONE
 278         };
 279
 280         c->base.display = eglGetDisplay(c->parent.display);
 281         if (c->base.display == NULL) {
 282                 fprintf(stderr, "failed to create display\n");
 283                 return -1;
 284         }
 285
 286         if (!eglInitialize(c->base.display, &major, &minor)) {
 287                 fprintf(stderr, "failed to initialize display\n");
 288                 return -1;
 289         }
 290
 291         if (!eglBindAPI(EGL_OPENGL_ES_API)) {
 292                 fprintf(stderr, "failed to bind EGL_OPENGL_ES_API\n");
 293                 return -1;
 294         }
 295         if (!eglChooseConfig(c->base.display, config_attribs,
 296                              &c->base.config, 1, &n) || n == 0) {
 297                 fprintf(stderr, "failed to choose config: %d\n", n);
 298                 return -1;
 299         }
 300
 301         c->base.context = eglCreateContext(c->base.display, c->base.config,
 302                                            EGL_NO_CONTEXT, context_attribs);
 303         if (c->base.context == NULL) {
 304                 fprintf(stderr, "failed to create context\n");
 305                 return -1;
 306         }
 307
 308         c->dummy_pixmap = wl_egl_pixmap_create(10, 10, 0);
 309         if (!c->dummy_pixmap) {
 310                 fprintf(stderr, "failure to create dummy_pixmap\n");
 311                 return -1;
 312         }
 313
 314         c->dummy_egl_surface =
 315                 eglCreatePixmapSurface(c->base.display, c->base.config,
 316                                        c->dummy_pixmap, NULL);
 317         if (!eglMakeCurrent(c->base.display, c->dummy_egl_surface,
 318                             c->dummy_egl_surface, c->base.context)) {
 319                 fprintf(stderr, "failed to make context current\n");
 320                 return -1;
 321         }
 322
 323         return 0;
 324 }
 325
 326 static void
 327 frame_done(void *data, struct wl_callback *callback, uint32_t time)
 328 {
 329         struct weston_output *output = data;
 330
 331         wl_callback_destroy(callback);
 332         weston_output_finish_frame(output, time);
 333 }
 334
 335 static const struct wl_callback_listener frame_listener = {
 336         frame_done
 337 };
 338
 339 static void
 340 wayland_output_repaint(struct weston_output *output_base,
 341                        pixman_region32_t *damage)
 342 {
 343         struct wayland_output *output = (struct wayland_output *) output_base;
 344         struct wayland_compositor *compositor =
 345                 (struct wayland_compositor *) output->base.compositor;
 346         struct wl_callback *callback;
 347         struct weston_surface *surface;
 348
 349         if (!eglMakeCurrent(compositor->base.display, output->egl_surface,
 350                             output->egl_surface, compositor->base.context)) {
 351                 fprintf(stderr, "failed to make current\n");
 352                 return;
 353         }
 354
 355         wl_list_for_each_reverse(surface, &compositor->base.surface_list, link)
 356                 weston_surface_draw(surface, &output->base, damage);
 357
 358         draw_border(output);
 359
 360         eglSwapBuffers(compositor->base.display, output->egl_surface);
 361         callback = wl_surface_frame(output->parent.surface);
 362         wl_callback_add_listener(callback, &frame_listener, output);
 363
 364         return;
 365 }
 366
 367 static void
 368 wayland_output_destroy(struct weston_output *output_base)
 369 {
 370         struct wayland_output *output = (struct wayland_output *) output_base;
 371         struct weston_compositor *ec = output->base.compositor;
 372
 373         eglDestroySurface(ec->display, output->egl_surface);
 374         wl_egl_window_destroy(output->parent.egl_window);
 375         free(output);
 376
 377         return;
 378 }
 379
 380 static void
 381 wayland_output_read_pixels(struct weston_output *output_base, void *data)
 382 {
 383         struct wayland_output *output = (struct wayland_output *) output_base;
 384         struct wayland_compositor *compositor =
 385                 (struct wayland_compositor *) output->base.compositor;
 386
 387         eglMakeCurrent(compositor->base.display, output->egl_surface,
 388                         output->egl_surface, compositor->base.context);
 389
 390         glReadPixels(0, 0, output_base->current->width,
 391                      output_base->current->height,
 392                      compositor->base.read_format, GL_UNSIGNED_BYTE, data);
 393 }
 394
 395 static int
 396 wayland_compositor_create_output(struct wayland_compositor *c,
 397                                  int width, int height)
 398 {
 399         struct wayland_output *output;
 400
 401         output = malloc(sizeof *output);
 402         if (output == NULL)
 403                 return -1;
 404         memset(output, 0, sizeof *output);
 405
 406         output->mode.flags =
 407                 WL_OUTPUT_MODE_CURRENT | WL_OUTPUT_MODE_PREFERRED;
 408         output->mode.width = width;
 409         output->mode.height = height;
 410         output->mode.refresh = 60;
 411         wl_list_init(&output->base.mode_list);
 412         wl_list_insert(&output->base.mode_list, &output->mode.link);
 413
 414         output->base.current = &output->mode;
 415         weston_output_init(&output->base, &c->base, 0, 0, width, height,
 416                          WL_OUTPUT_FLIPPED);
 417
 418         output->base.border.top = c->border.top;
 419         output->base.border.bottom = c->border.bottom;
 420         output->base.border.left = c->border.left;
 421         output->base.border.right = c->border.right;
 422
 423         weston_output_move(&output->base, 0, 0);
 424
 425         output->parent.surface =
 426                 wl_compositor_create_surface(c->parent.compositor);
 427         wl_surface_set_user_data(output->parent.surface, output);
 428
 429         output->parent.egl_window =
 430                 wl_egl_window_create(output->parent.surface,
 431                                      width + c->border.left + c->border.right,
 432                                      height + c->border.top + c->border.bottom);
 433         if (!output->parent.egl_window) {
 434                 fprintf(stderr, "failure to create wl_egl_window\n");
 435                 goto cleanup_output;
 436         }
 437
 438         output->egl_surface =
 439                 eglCreateWindowSurface(c->base.display, c->base.config,
 440                                        output->parent.egl_window, NULL);
 441         if (!output->egl_surface) {
 442                 fprintf(stderr, "failed to create window surface\n");
 443                 goto cleanup_window;
 444         }
 445
 446         if (!eglMakeCurrent(c->base.display, output->egl_surface,
 447                             output->egl_surface, c->base.context)) {
 448                 fprintf(stderr, "failed to make surface current\n");
 449                 goto cleanup_surface;
 450                 return -1;
 451         }
 452
 453         output->parent.shell_surface =
 454                 wl_shell_get_shell_surface(c->parent.shell,
 455                                            output->parent.surface);
 456         /* FIXME: add shell_surface listener for resizing */
 457         wl_shell_surface_set_toplevel(output->parent.shell_surface);
 458
 459         output->base.origin = output->base.current;
 460         output->base.repaint = wayland_output_repaint;
 461         output->base.destroy = wayland_output_destroy;
 462         output->base.assign_planes = NULL;
 463         output->base.read_pixels = wayland_output_read_pixels;
 464         output->base.set_backlight = NULL;
 465         output->base.set_dpms = NULL;
 466         output->base.switch_mode = NULL;
 467
 468         wl_list_insert(c->base.output_list.prev, &output->base.link);
 469
 470         return 0;
 471
 472 cleanup_surface:
 473         eglDestroySurface(c->base.display, output->egl_surface);
 474 cleanup_window:
 475         wl_egl_window_destroy(output->parent.egl_window);
 476 cleanup_output:
 477         /* FIXME: cleanup weston_output */
 478         free(output);
 479
 480         return -1;
 481 }
 482
 483 /* Events received from the wayland-server this compositor is client of: */
 484
 485 /* parent output interface */
 486 static void
 487 display_handle_geometry(void *data,
 488                         struct wl_output *wl_output,
 489                         int x,
 490                         int y,
 491                         int physical_width,
 492                         int physical_height,
 493                         int subpixel,
 494                         const char *make,
 495                         const char *model)
 496 {
 497         struct wayland_compositor *c = data;
 498
 499         c->parent.screen_allocation.x = x;
 500         c->parent.screen_allocation.y = y;
 501 }
 502
 503 static void
 504 display_handle_mode(void *data,
 505                     struct wl_output *wl_output,
 506                     uint32_t flags,
 507                     int width,
 508                     int height,
 509                     int refresh)
 510 {
 511         struct wayland_compositor *c = data;
 512
 513         c->parent.screen_allocation.width = width;
 514         c->parent.screen_allocation.height = height;
 515 }
 516
 517 static const struct wl_output_listener output_listener = {
 518         display_handle_geometry,
 519         display_handle_mode
 520 };
 521
 522 /* parent input interface */
 523 static void
 524 input_handle_motion(void *data, struct wl_input_device *input_device,
 525                     uint32_t time, int32_t sx, int32_t sy)
 526 {
 527         struct wayland_input *input = data;
 528         struct wayland_compositor *c = input->compositor;
 529
 530         notify_motion(c->base.input_device, time,
 531                       sx - c->border.left, sy - c->border.top);
 532 }
 533
 534 static void
 535 input_handle_button(void *data,
 536                     struct wl_input_device *input_device,
 537                     uint32_t serial, uint32_t time, uint32_t button, uint32_t state)
 538 {
 539         struct wayland_input *input = data;
 540         struct wayland_compositor *c = input->compositor;
 541
 542         notify_button(c->base.input_device, time, button, state);
 543 }
 544
 545 static void
 546 input_handle_axis(void *data, struct wl_input_device *input_device,
 547                   uint32_t time, uint32_t axis, int32_t value)
 548 {
 549         struct wayland_input *input = data;
 550         struct wayland_compositor *c = input->compositor;
 551
 552         notify_axis(c->base.input_device, time, axis, value);
 553 }
 554
 555 static void
 556 input_handle_key(void *data, struct wl_input_device *input_device,
 557                  uint32_t serial, uint32_t time, uint32_t key, uint32_t state)
 558 {
 559         struct wayland_input *input = data;
 560         struct wayland_compositor *c = input->compositor;
 561
 562         notify_key(c->base.input_device, time, key, state);
 563 }
 564
 565 static void
 566 input_handle_pointer_enter(void *data,
 567                            struct wl_input_device *input_device,
 568                            uint32_t time, struct wl_surface *surface,
 569                            int32_t sx, int32_t sy)
 570 {
 571         struct wayland_input *input = data;
 572         struct wayland_output *output;
 573         struct wayland_compositor *c = input->compositor;
 574
 575         output = wl_surface_get_user_data(surface);
 576         notify_pointer_focus(c->base.input_device, &output->base, sx, sy);
 577         wl_input_device_attach(input->input_device, time, NULL, 0, 0);
 578 }
 579
 580 static void
 581 input_handle_pointer_leave(void *data,
 582                            struct wl_input_device *input_device,
 583                            uint32_t time, struct wl_surface *surface)
 584 {
 585         struct wayland_input *input = data;
 586         struct wayland_compositor *c = input->compositor;
 587
 588         notify_pointer_focus(c->base.input_device, NULL, 0, 0);
 589 }
 590
 591 static void
 592 input_handle_keyboard_enter(void *data,
 593                             struct wl_input_device *input_device,
 594                             uint32_t time,
 595                             struct wl_surface *surface,
 596                             struct wl_array *keys)
 597 {
 598         struct wayland_input *input = data;
 599         struct wayland_compositor *c = input->compositor;
 600
 601         notify_keyboard_focus(c->base.input_device, keys);
 602 }
 603
 604 static void
 605 input_handle_keyboard_leave(void *data,
 606                             struct wl_input_device *input_device,
 607                             uint32_t time,
 608                             struct wl_surface *surface)
 609 {
 610         struct wayland_input *input = data;
 611         struct wayland_compositor *c = input->compositor;
 612
 613         notify_keyboard_focus(c->base.input_device, NULL);
 614 }
 615
 616 static const struct wl_input_device_listener input_device_listener = {
 617         input_handle_motion,
 618         input_handle_button,
 619         input_handle_axis,
 620         input_handle_key,
 621         input_handle_pointer_enter,
 622         input_handle_pointer_leave,
 623         input_handle_keyboard_enter,
 624         input_handle_keyboard_leave,
 625 };
 626
 627 static void
 628 display_add_input(struct wayland_compositor *c, uint32_t id)
 629 {
 630         struct wayland_input *input;
 631
 632         input = malloc(sizeof *input);
 633         if (input == NULL)
 634                 return;
 635
 636         memset(input, 0, sizeof *input);
 637
 638         input->compositor = c;
 639         input->input_device = wl_display_bind(c->parent.display,
 640                                               id, &wl_input_device_interface);
 641         wl_list_insert(c->input_list.prev, &input->link);
 642
 643         wl_input_device_add_listener(input->input_device,
 644                                      &input_device_listener, input);
 645         wl_input_device_set_user_data(input->input_device, input);
 646 }
 647
 648 static void
 649 display_handle_global(struct wl_display *display, uint32_t id,
 650                       const char *interface, uint32_t version, void *data)
 651 {
 652         struct wayland_compositor *c = data;
 653
 654         if (strcmp(interface, "wl_compositor") == 0) {
 655                 c->parent.compositor =
 656                         wl_display_bind(display, id, &wl_compositor_interface);
 657         } else if (strcmp(interface, "wl_output") == 0) {
 658                 c->parent.output =
 659                         wl_display_bind(display, id, &wl_output_interface);
 660                 wl_output_add_listener(c->parent.output, &output_listener, c);
 661         } else if (strcmp(interface, "wl_input_device") == 0) {
 662                 display_add_input(c, id);
 663         } else if (strcmp(interface, "wl_shell") == 0) {
 664                 c->parent.shell =
 665                         wl_display_bind(display, id, &wl_shell_interface);
 666         }
 667 }
 668
 669 static int
 670 update_event_mask(uint32_t mask, void *data)
 671 {
 672         struct wayland_compositor *c = data;
 673
 674         c->parent.event_mask = mask;
 675         if (c->parent.wl_source)
 676                 wl_event_source_fd_update(c->parent.wl_source, mask);
 677
 678         return 0;
 679 }
 680
 681 static int
 682 wayland_compositor_handle_event(int fd, uint32_t mask, void *data)
 683 {
 684         struct wayland_compositor *c = data;
 685
 686         if (mask & WL_EVENT_READABLE)
 687                 wl_display_iterate(c->parent.display, WL_DISPLAY_READABLE);
 688         if (mask & WL_EVENT_WRITABLE)
 689                 wl_display_iterate(c->parent.display, WL_DISPLAY_WRITABLE);
 690
 691         return 1;
 692 }
 693
 694 static void
 695 wayland_destroy(struct weston_compositor *ec)
 696 {
 697         weston_compositor_shutdown(ec);
 698
 699         free(ec);
 700 }
 701
 702 static struct weston_compositor *
 703 wayland_compositor_create(struct wl_display *display,
 704                           int width, int height, const char *display_name)
 705 {
 706         struct wayland_compositor *c;
 707         struct wl_event_loop *loop;
 708         int fd;
 709
 710         c = malloc(sizeof *c);
 711         if (c == NULL)
 712                 return NULL;
 713
 714         memset(c, 0, sizeof *c);
 715
 716         c->parent.display = wl_display_connect(display_name);
 717
 718         if (c->parent.display == NULL) {
 719                 fprintf(stderr, "failed to create display: %m\n");
 720                 return NULL;
 721         }
 722
 723         wl_list_init(&c->input_list);
 724         wl_display_add_global_listener(c->parent.display,
 725                                 display_handle_global, c);
 726
 727         wl_display_iterate(c->parent.display, WL_DISPLAY_READABLE);
 728
 729         c->base.wl_display = display;
 730         if (wayland_compositor_init_egl(c) < 0)
 731                 return NULL;
 732
 733         c->base.destroy = wayland_destroy;
 734
 735         /* Can't init base class until we have a current egl context */
 736         if (weston_compositor_init(&c->base, display) < 0)
 737                 return NULL;
 738
 739         create_border(c);
 740         if (wayland_compositor_create_output(c, width, height) < 0)
 741                 return NULL;
 742
 743         if (wayland_input_create(c) < 0)
 744                 return NULL;
 745
 746         loop = wl_display_get_event_loop(c->base.wl_display);
 747
 748         fd = wl_display_get_fd(c->parent.display, update_event_mask, c);
 749         c->parent.wl_source =
 750                 wl_event_loop_add_fd(loop, fd, c->parent.event_mask,
 751                                      wayland_compositor_handle_event, c);
 752         if (c->parent.wl_source == NULL)
 753                 return NULL;
 754
 755         return &c->base;
 756 }
 757
 758 WL_EXPORT struct weston_compositor *
 759 backend_init(struct wl_display *display, int argc, char *argv[])
 760 {
 761         int width = 1024, height = 640;
 762         char *display_name = NULL;
 763
 764         const struct weston_option wayland_options[] = {
 765                 { WESTON_OPTION_INTEGER, "width", 0, &width },
 766                 { WESTON_OPTION_INTEGER, "height", 0, &height },
 767                 { WESTON_OPTION_STRING, "display", 0, &display_name },
 768         };
 769
 770         parse_options(wayland_options,
 771                       ARRAY_LENGTH(wayland_options), argc, argv);
 772
 773         return wayland_compositor_create(display, width, height, display_name);
 774 }