ui/console.c

   1 /*
   2  * QEMU graphical console
   3  *
   4  * Copyright (c) 2004 Fabrice Bellard
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a copy
   7  * of this software and associated documentation files (the "Software"), to deal
   8  * in the Software without restriction, including without limitation the rights
   9  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10  * copies of the Software, and to permit persons to whom the Software is
  11  * furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  22  * THE SOFTWARE.
  23  */
  24
  25 #include "qemu/osdep.h"
  26 #include "ui/console.h"
  27 #include "hw/qdev-core.h"
  28 #include "qapi/error.h"
  29 #include "qapi/qapi-commands-ui.h"
  30 #include "qapi/visitor.h"
  31 #include "qemu/coroutine.h"
  32 #include "qemu/error-report.h"
  33 #include "qemu/main-loop.h"
  34 #include "qemu/module.h"
  35 #include "qemu/option.h"
  36 #include "chardev/char.h"
  37 #include "trace.h"
  38 #include "exec/memory.h"
  39 #include "qom/object.h"
  40 #include "qemu/memfd.h"
  41
  42 #include "console-priv.h"
  43
  44 OBJECT_DEFINE_ABSTRACT_TYPE(QemuConsole, qemu_console, QEMU_CONSOLE, OBJECT)
  45
  46 typedef struct QemuGraphicConsole {
  47     QemuConsole parent;
  48
  49     Object *device;
  50     uint32_t head;
  51
  52     QEMUCursor *cursor;
  53     int cursor_x, cursor_y;
  54     bool cursor_on;
  55 } QemuGraphicConsole;
  56
  57 typedef QemuConsoleClass QemuGraphicConsoleClass;
  58
  59 OBJECT_DEFINE_TYPE(QemuGraphicConsole, qemu_graphic_console, QEMU_GRAPHIC_CONSOLE, QEMU_CONSOLE)
  60
  61 struct DisplayState {
  62     QEMUTimer *gui_timer;
  63     uint64_t last_update;
  64     uint64_t update_interval;
  65     bool refreshing;
  66
  67     QLIST_HEAD(, DisplayChangeListener) listeners;
  68 };
  69
  70 static DisplayState *display_state;
  71 static QTAILQ_HEAD(, QemuConsole) consoles =
  72     QTAILQ_HEAD_INITIALIZER(consoles);
  73
  74 static void dpy_refresh(DisplayState *s);
  75 static DisplayState *get_alloc_displaystate(void);
  76 static bool displaychangelistener_has_dmabuf(DisplayChangeListener *dcl);
  77 static bool console_compatible_with(QemuConsole *con,
  78                                     DisplayChangeListener *dcl, Error **errp);
  79 static QemuConsole *qemu_graphic_console_lookup_unused(void);
  80 static void dpy_set_ui_info_timer(void *opaque);
  81
  82 static void gui_update(void *opaque)
  83 {
  84     uint64_t interval = GUI_REFRESH_INTERVAL_IDLE;
  85     uint64_t dcl_interval;
  86     DisplayState *ds = opaque;
  87     DisplayChangeListener *dcl;
  88
  89     ds->refreshing = true;
  90     dpy_refresh(ds);
  91     ds->refreshing = false;
  92
  93     QLIST_FOREACH(dcl, &ds->listeners, next) {
  94         dcl_interval = dcl->update_interval ?
  95             dcl->update_interval : GUI_REFRESH_INTERVAL_DEFAULT;
  96         if (interval > dcl_interval) {
  97             interval = dcl_interval;
  98         }
  99     }
 100     if (ds->update_interval != interval) {
 101         ds->update_interval = interval;
 102         trace_console_refresh(interval);
 103     }
 104     ds->last_update = qemu_clock_get_ms(QEMU_CLOCK_REALTIME);
 105     timer_mod(ds->gui_timer, ds->last_update + interval);
 106 }
 107
 108 static void gui_setup_refresh(DisplayState *ds)
 109 {
 110     DisplayChangeListener *dcl;
 111     bool need_timer = false;
 112
 113     QLIST_FOREACH(dcl, &ds->listeners, next) {
 114         if (dcl->ops->dpy_refresh != NULL) {
 115             need_timer = true;
 116         }
 117     }
 118
 119     if (need_timer && ds->gui_timer == NULL) {
 120         ds->gui_timer = timer_new_ms(QEMU_CLOCK_REALTIME, gui_update, ds);
 121         timer_mod(ds->gui_timer, qemu_clock_get_ms(QEMU_CLOCK_REALTIME));
 122     }
 123     if (!need_timer && ds->gui_timer != NULL) {
 124         timer_free(ds->gui_timer);
 125         ds->gui_timer = NULL;
 126     }
 127 }
 128
 129 void graphic_hw_update_done(QemuConsole *con)
 130 {
 131     if (con) {
 132         qemu_co_enter_all(&con->dump_queue, NULL);
 133     }
 134 }
 135
 136 void graphic_hw_update(QemuConsole *con)
 137 {
 138     bool async = false;
 139     if (!con) {
 140         return;
 141     }
 142     if (con->hw_ops->gfx_update) {
 143         con->hw_ops->gfx_update(con->hw);
 144         async = con->hw_ops->gfx_update_async;
 145     }
 146     if (!async) {
 147         graphic_hw_update_done(con);
 148     }
 149 }
 150
 151 static void graphic_hw_update_bh(void *con)
 152 {
 153     graphic_hw_update(con);
 154 }
 155
 156 void qemu_console_co_wait_update(QemuConsole *con)
 157 {
 158     if (qemu_co_queue_empty(&con->dump_queue)) {
 159         /* Defer the update, it will restart the pending coroutines */
 160         aio_bh_schedule_oneshot(qemu_get_aio_context(),
 161                                 graphic_hw_update_bh, con);
 162     }
 163     qemu_co_queue_wait(&con->dump_queue, NULL);
 164
 165 }
 166
 167 static void graphic_hw_gl_unblock_timer(void *opaque)
 168 {
 169     warn_report("console: no gl-unblock within one second");
 170 }
 171
 172 void graphic_hw_gl_block(QemuConsole *con, bool block)
 173 {
 174     uint64_t timeout;
 175     assert(con != NULL);
 176
 177     if (block) {
 178         con->gl_block++;
 179     } else {
 180         con->gl_block--;
 181     }
 182     assert(con->gl_block >= 0);
 183     if (!con->hw_ops->gl_block) {
 184         return;
 185     }
 186     if ((block && con->gl_block != 1) || (!block && con->gl_block != 0)) {
 187         return;
 188     }
 189     con->hw_ops->gl_block(con->hw, block);
 190
 191     if (block) {
 192         timeout = qemu_clock_get_ms(QEMU_CLOCK_REALTIME);
 193         timeout += 1000; /* one sec */
 194         timer_mod(con->gl_unblock_timer, timeout);
 195     } else {
 196         timer_del(con->gl_unblock_timer);
 197     }
 198 }
 199
 200 int qemu_console_get_window_id(QemuConsole *con)
 201 {
 202     return con->window_id;
 203 }
 204
 205 void qemu_console_set_window_id(QemuConsole *con, int window_id)
 206 {
 207     con->window_id = window_id;
 208 }
 209
 210 void graphic_hw_invalidate(QemuConsole *con)
 211 {
 212     if (con && con->hw_ops->invalidate) {
 213         con->hw_ops->invalidate(con->hw);
 214     }
 215 }
 216
 217 void graphic_hw_text_update(QemuConsole *con, console_ch_t *chardata)
 218 {
 219     if (con && con->hw_ops->text_update) {
 220         con->hw_ops->text_update(con->hw, chardata);
 221     }
 222 }
 223
 224 static void displaychangelistener_gfx_switch(DisplayChangeListener *dcl,
 225                                              struct DisplaySurface *new_surface,
 226                                              bool update)
 227 {
 228     if (dcl->ops->dpy_gfx_switch) {
 229         dcl->ops->dpy_gfx_switch(dcl, new_surface);
 230     }
 231
 232     if (update && dcl->ops->dpy_gfx_update) {
 233         dcl->ops->dpy_gfx_update(dcl, 0, 0,
 234                                  surface_width(new_surface),
 235                                  surface_height(new_surface));
 236     }
 237 }
 238
 239 static void dpy_gfx_create_texture(QemuConsole *con, DisplaySurface *surface)
 240 {
 241     if (con->gl && con->gl->ops->dpy_gl_ctx_create_texture) {
 242         con->gl->ops->dpy_gl_ctx_create_texture(con->gl, surface);
 243     }
 244 }
 245
 246 static void dpy_gfx_destroy_texture(QemuConsole *con, DisplaySurface *surface)
 247 {
 248     if (con->gl && con->gl->ops->dpy_gl_ctx_destroy_texture) {
 249         con->gl->ops->dpy_gl_ctx_destroy_texture(con->gl, surface);
 250     }
 251 }
 252
 253 static void dpy_gfx_update_texture(QemuConsole *con, DisplaySurface *surface,
 254                                    int x, int y, int w, int h)
 255 {
 256     if (con->gl && con->gl->ops->dpy_gl_ctx_update_texture) {
 257         con->gl->ops->dpy_gl_ctx_update_texture(con->gl, surface, x, y, w, h);
 258     }
 259 }
 260
 261 static void displaychangelistener_display_console(DisplayChangeListener *dcl,
 262                                                   Error **errp)
 263 {
 264     static const char nodev[] =
 265         "This VM has no graphic display device.";
 266     static DisplaySurface *dummy;
 267     QemuConsole *con = dcl->con;
 268
 269     if (!con || !console_compatible_with(con, dcl, errp)) {
 270         if (!dummy) {
 271             dummy = qemu_create_placeholder_surface(640, 480, nodev);
 272         }
 273         if (con) {
 274             dpy_gfx_create_texture(con, dummy);
 275         }
 276         displaychangelistener_gfx_switch(dcl, dummy, TRUE);
 277         return;
 278     }
 279
 280     dpy_gfx_create_texture(con, con->surface);
 281     displaychangelistener_gfx_switch(dcl, con->surface,
 282                                      con->scanout.kind == SCANOUT_SURFACE);
 283
 284     if (con->scanout.kind == SCANOUT_DMABUF &&
 285         displaychangelistener_has_dmabuf(dcl)) {
 286         dcl->ops->dpy_gl_scanout_dmabuf(dcl, con->scanout.dmabuf);
 287     } else if (con->scanout.kind == SCANOUT_TEXTURE &&
 288                dcl->ops->dpy_gl_scanout_texture) {
 289         dcl->ops->dpy_gl_scanout_texture(dcl,
 290                                          con->scanout.texture.backing_id,
 291                                          con->scanout.texture.backing_y_0_top,
 292                                          con->scanout.texture.backing_width,
 293                                          con->scanout.texture.backing_height,
 294                                          con->scanout.texture.x,
 295                                          con->scanout.texture.y,
 296                                          con->scanout.texture.width,
 297                                          con->scanout.texture.height,
 298                                          con->scanout.texture.d3d_tex2d);
 299     }
 300 }
 301
 302 void qemu_text_console_put_keysym(QemuTextConsole *s, int keysym)
 303 {
 304     qemu_text_console_handle_keysym(s, keysym);
 305 }
 306
 307 static const int qcode_to_keysym[Q_KEY_CODE__MAX] = {
 308     [Q_KEY_CODE_UP]     = QEMU_KEY_UP,
 309     [Q_KEY_CODE_DOWN]   = QEMU_KEY_DOWN,
 310     [Q_KEY_CODE_RIGHT]  = QEMU_KEY_RIGHT,
 311     [Q_KEY_CODE_LEFT]   = QEMU_KEY_LEFT,
 312     [Q_KEY_CODE_HOME]   = QEMU_KEY_HOME,
 313     [Q_KEY_CODE_END]    = QEMU_KEY_END,
 314     [Q_KEY_CODE_PGUP]   = QEMU_KEY_PAGEUP,
 315     [Q_KEY_CODE_PGDN]   = QEMU_KEY_PAGEDOWN,
 316     [Q_KEY_CODE_DELETE] = QEMU_KEY_DELETE,
 317     [Q_KEY_CODE_TAB]    = QEMU_KEY_TAB,
 318     [Q_KEY_CODE_BACKSPACE] = QEMU_KEY_BACKSPACE,
 319 };
 320
 321 static const int ctrl_qcode_to_keysym[Q_KEY_CODE__MAX] = {
 322     [Q_KEY_CODE_UP]     = QEMU_KEY_CTRL_UP,
 323     [Q_KEY_CODE_DOWN]   = QEMU_KEY_CTRL_DOWN,
 324     [Q_KEY_CODE_RIGHT]  = QEMU_KEY_CTRL_RIGHT,
 325     [Q_KEY_CODE_LEFT]   = QEMU_KEY_CTRL_LEFT,
 326     [Q_KEY_CODE_HOME]   = QEMU_KEY_CTRL_HOME,
 327     [Q_KEY_CODE_END]    = QEMU_KEY_CTRL_END,
 328     [Q_KEY_CODE_PGUP]   = QEMU_KEY_CTRL_PAGEUP,
 329     [Q_KEY_CODE_PGDN]   = QEMU_KEY_CTRL_PAGEDOWN,
 330 };
 331
 332 bool qemu_text_console_put_qcode(QemuTextConsole *s, int qcode, bool ctrl)
 333 {
 334     int keysym;
 335
 336     keysym = ctrl ? ctrl_qcode_to_keysym[qcode] : qcode_to_keysym[qcode];
 337     if (keysym == 0) {
 338         return false;
 339     }
 340     qemu_text_console_put_keysym(s, keysym);
 341     return true;
 342 }
 343
 344 void qemu_text_console_put_string(QemuTextConsole *s, const char *str, int len)
 345 {
 346     int i;
 347
 348     for (i = 0; i < len && str[i]; i++) {
 349         qemu_text_console_put_keysym(s, str[i]);
 350     }
 351 }
 352
 353 static void
 354 qemu_console_register(QemuConsole *c)
 355 {
 356     int i;
 357
 358     if (QTAILQ_EMPTY(&consoles)) {
 359         c->index = 0;
 360         QTAILQ_INSERT_TAIL(&consoles, c, next);
 361     } else if (!QEMU_IS_GRAPHIC_CONSOLE(c) || phase_check(PHASE_MACHINE_READY)) {
 362         QemuConsole *last = QTAILQ_LAST(&consoles);
 363         c->index = last->index + 1;
 364         QTAILQ_INSERT_TAIL(&consoles, c, next);
 365     } else {
 366         /*
 367          * HACK: Put graphical consoles before text consoles.
 368          *
 369          * Only do that for coldplugged devices.  After initial device
 370          * initialization we will not renumber the consoles any more.
 371          */
 372         QemuConsole *it = QTAILQ_FIRST(&consoles);
 373
 374         while (QTAILQ_NEXT(it, next) != NULL && QEMU_IS_GRAPHIC_CONSOLE(it)) {
 375             it = QTAILQ_NEXT(it, next);
 376         }
 377         if (QEMU_IS_GRAPHIC_CONSOLE(it)) {
 378             /* have no text consoles */
 379             c->index = it->index + 1;
 380             QTAILQ_INSERT_AFTER(&consoles, it, c, next);
 381         } else {
 382             c->index = it->index;
 383             QTAILQ_INSERT_BEFORE(it, c, next);
 384             /* renumber text consoles */
 385             for (i = c->index + 1; it != NULL; it = QTAILQ_NEXT(it, next), i++) {
 386                 it->index = i;
 387             }
 388         }
 389     }
 390 }
 391
 392 static void
 393 qemu_console_finalize(Object *obj)
 394 {
 395     QemuConsole *c = QEMU_CONSOLE(obj);
 396
 397     /* TODO: check this code path, and unregister from consoles */
 398     g_clear_pointer(&c->surface, qemu_free_displaysurface);
 399     g_clear_pointer(&c->gl_unblock_timer, timer_free);
 400     g_clear_pointer(&c->ui_timer, timer_free);
 401 }
 402
 403 static void
 404 qemu_console_class_init(ObjectClass *oc, void *data)
 405 {
 406 }
 407
 408 static void
 409 qemu_console_init(Object *obj)
 410 {
 411     QemuConsole *c = QEMU_CONSOLE(obj);
 412     DisplayState *ds = get_alloc_displaystate();
 413
 414     qemu_co_queue_init(&c->dump_queue);
 415     c->ds = ds;
 416     c->window_id = -1;
 417     c->ui_timer = timer_new_ms(QEMU_CLOCK_REALTIME,
 418                                dpy_set_ui_info_timer, c);
 419     qemu_console_register(c);
 420 }
 421
 422 static void
 423 qemu_graphic_console_finalize(Object *obj)
 424 {
 425     QemuGraphicConsole *c = QEMU_GRAPHIC_CONSOLE(obj);
 426
 427     g_clear_pointer(&c->device, object_unref);
 428 }
 429
 430 static void
 431 qemu_graphic_console_prop_get_head(Object *obj, Visitor *v, const char *name,
 432                                    void *opaque, Error **errp)
 433 {
 434     QemuGraphicConsole *c = QEMU_GRAPHIC_CONSOLE(obj);
 435
 436     visit_type_uint32(v, name, &c->head, errp);
 437 }
 438
 439 static void
 440 qemu_graphic_console_class_init(ObjectClass *oc, void *data)
 441 {
 442     object_class_property_add_link(oc, "device", TYPE_DEVICE,
 443                                    offsetof(QemuGraphicConsole, device),
 444                                    object_property_allow_set_link,
 445                                    OBJ_PROP_LINK_STRONG);
 446     object_class_property_add(oc, "head", "uint32",
 447                               qemu_graphic_console_prop_get_head,
 448                               NULL, NULL, NULL);
 449 }
 450
 451 static void
 452 qemu_graphic_console_init(Object *obj)
 453 {
 454 }
 455
 456 void qemu_displaysurface_set_share_handle(DisplaySurface *surface,
 457                                           qemu_pixman_shareable handle,
 458                                           uint32_t offset)
 459 {
 460     assert(surface->share_handle == SHAREABLE_NONE);
 461
 462     surface->share_handle = handle;
 463     surface->share_handle_offset = offset;
 464
 465 }
 466
 467 DisplaySurface *qemu_create_displaysurface(int width, int height)
 468 {
 469     trace_displaysurface_create(width, height);
 470
 471     return qemu_create_displaysurface_from(
 472         width, height,
 473         PIXMAN_x8r8g8b8,
 474         width * 4, NULL
 475     );
 476 }
 477
 478 DisplaySurface *qemu_create_displaysurface_from(int width, int height,
 479                                                 pixman_format_code_t format,
 480                                                 int linesize, uint8_t *data)
 481 {
 482     DisplaySurface *surface = g_new0(DisplaySurface, 1);
 483
 484     trace_displaysurface_create_from(surface, width, height, format);
 485     surface->share_handle = SHAREABLE_NONE;
 486
 487     if (data) {
 488         surface->image = pixman_image_create_bits(format,
 489                                                   width, height,
 490                                                   (void *)data, linesize);
 491     } else {
 492         qemu_pixman_image_new_shareable(&surface->image,
 493                                         &surface->share_handle,
 494                                         "displaysurface",
 495                                         format,
 496                                         width,
 497                                         height,
 498                                         linesize,
 499                                         &error_abort);
 500         surface->flags = QEMU_ALLOCATED_FLAG;
 501     }
 502
 503     assert(surface->image != NULL);
 504     return surface;
 505 }
 506
 507 DisplaySurface *qemu_create_displaysurface_pixman(pixman_image_t *image)
 508 {
 509     DisplaySurface *surface = g_new0(DisplaySurface, 1);
 510
 511     trace_displaysurface_create_pixman(surface);
 512     surface->share_handle = SHAREABLE_NONE;
 513     surface->image = pixman_image_ref(image);
 514
 515     return surface;
 516 }
 517
 518 DisplaySurface *qemu_create_placeholder_surface(int w, int h,
 519                                                 const char *msg)
 520 {
 521     DisplaySurface *surface = qemu_create_displaysurface(w, h);
 522 #ifdef CONFIG_PIXMAN
 523     pixman_color_t bg = QEMU_PIXMAN_COLOR_BLACK;
 524     pixman_color_t fg = QEMU_PIXMAN_COLOR_GRAY;
 525     pixman_image_t *glyph;
 526     int len, x, y, i;
 527
 528     len = strlen(msg);
 529     x = (w / FONT_WIDTH  - len) / 2;
 530     y = (h / FONT_HEIGHT - 1)   / 2;
 531     for (i = 0; i < len; i++) {
 532         glyph = qemu_pixman_glyph_from_vgafont(FONT_HEIGHT, vgafont16, msg[i]);
 533         qemu_pixman_glyph_render(glyph, surface->image, &fg, &bg,
 534                                  x+i, y, FONT_WIDTH, FONT_HEIGHT);
 535         qemu_pixman_image_unref(glyph);
 536     }
 537 #endif
 538     surface->flags |= QEMU_PLACEHOLDER_FLAG;
 539     return surface;
 540 }
 541
 542 void qemu_free_displaysurface(DisplaySurface *surface)
 543 {
 544     if (surface == NULL) {
 545         return;
 546     }
 547     trace_displaysurface_free(surface);
 548     qemu_pixman_image_unref(surface->image);
 549     g_free(surface);
 550 }
 551
 552 bool console_has_gl(QemuConsole *con)
 553 {
 554     return con->gl != NULL;
 555 }
 556
 557 static bool displaychangelistener_has_dmabuf(DisplayChangeListener *dcl)
 558 {
 559     if (dcl->ops->dpy_has_dmabuf) {
 560         return dcl->ops->dpy_has_dmabuf(dcl);
 561     }
 562
 563     if (dcl->ops->dpy_gl_scanout_dmabuf) {
 564         return true;
 565     }
 566
 567     return false;
 568 }
 569
 570 static bool console_compatible_with(QemuConsole *con,
 571                                     DisplayChangeListener *dcl, Error **errp)
 572 {
 573     int flags;
 574
 575     flags = con->hw_ops->get_flags ? con->hw_ops->get_flags(con->hw) : 0;
 576
 577     if (console_has_gl(con) &&
 578         !con->gl->ops->dpy_gl_ctx_is_compatible_dcl(con->gl, dcl)) {
 579         error_setg(errp, "Display %s is incompatible with the GL context",
 580                    dcl->ops->dpy_name);
 581         return false;
 582     }
 583
 584     if (flags & GRAPHIC_FLAGS_GL &&
 585         !console_has_gl(con)) {
 586         error_setg(errp, "The console requires a GL context.");
 587         return false;
 588
 589     }
 590
 591     if (flags & GRAPHIC_FLAGS_DMABUF &&
 592         !displaychangelistener_has_dmabuf(dcl)) {
 593         error_setg(errp, "The console requires display DMABUF support.");
 594         return false;
 595     }
 596
 597     return true;
 598 }
 599
 600 void console_handle_touch_event(QemuConsole *con,
 601                                 struct touch_slot touch_slots[INPUT_EVENT_SLOTS_MAX],
 602                                 uint64_t num_slot,
 603                                 int width, int height,
 604                                 double x, double y,
 605                                 InputMultiTouchType type,
 606                                 Error **errp)
 607 {
 608     struct touch_slot *slot;
 609     bool needs_sync = false;
 610     int update;
 611     int i;
 612
 613     if (num_slot >= INPUT_EVENT_SLOTS_MAX) {
 614         error_setg(errp,
 615                    "Unexpected touch slot number: % " PRId64" >= %d",
 616                    num_slot, INPUT_EVENT_SLOTS_MAX);
 617         return;
 618     }
 619
 620     slot = &touch_slots[num_slot];
 621     slot->x = x;
 622     slot->y = y;
 623
 624     if (type == INPUT_MULTI_TOUCH_TYPE_BEGIN) {
 625         slot->tracking_id = num_slot;
 626     }
 627
 628     for (i = 0; i < INPUT_EVENT_SLOTS_MAX; ++i) {
 629         if (i == num_slot) {
 630             update = type;
 631         } else {
 632             update = INPUT_MULTI_TOUCH_TYPE_UPDATE;
 633         }
 634
 635         slot = &touch_slots[i];
 636
 637         if (slot->tracking_id == -1) {
 638             continue;
 639         }
 640
 641         if (update == INPUT_MULTI_TOUCH_TYPE_END) {
 642             slot->tracking_id = -1;
 643             qemu_input_queue_mtt(con, update, i, slot->tracking_id);
 644             needs_sync = true;
 645         } else {
 646             qemu_input_queue_mtt(con, update, i, slot->tracking_id);
 647             qemu_input_queue_btn(con, INPUT_BUTTON_TOUCH, true);
 648             qemu_input_queue_mtt_abs(con,
 649                                     INPUT_AXIS_X, (int) slot->x,
 650                                     0, width,
 651                                     i, slot->tracking_id);
 652             qemu_input_queue_mtt_abs(con,
 653                                     INPUT_AXIS_Y, (int) slot->y,
 654                                     0, height,
 655                                     i, slot->tracking_id);
 656             needs_sync = true;
 657         }
 658     }
 659
 660     if (needs_sync) {
 661         qemu_input_event_sync();
 662     }
 663 }
 664
 665 void qemu_console_set_display_gl_ctx(QemuConsole *con, DisplayGLCtx *gl)
 666 {
 667     /* display has opengl support */
 668     assert(con);
 669     if (con->gl) {
 670         error_report("The console already has an OpenGL context.");
 671         exit(1);
 672     }
 673     con->gl = gl;
 674 }
 675
 676 static void
 677 dcl_set_graphic_cursor(DisplayChangeListener *dcl, QemuGraphicConsole *con)
 678 {
 679     if (con && con->cursor && dcl->ops->dpy_cursor_define) {
 680         dcl->ops->dpy_cursor_define(dcl, con->cursor);
 681     }
 682     if (con && dcl->ops->dpy_mouse_set) {
 683         dcl->ops->dpy_mouse_set(dcl, con->cursor_x, con->cursor_y, con->cursor_on);
 684     }
 685 }
 686
 687 void register_displaychangelistener(DisplayChangeListener *dcl)
 688 {
 689     assert(!dcl->ds);
 690
 691     trace_displaychangelistener_register(dcl, dcl->ops->dpy_name);
 692     dcl->ds = get_alloc_displaystate();
 693     QLIST_INSERT_HEAD(&dcl->ds->listeners, dcl, next);
 694     gui_setup_refresh(dcl->ds);
 695     if (dcl->con) {
 696         dcl->con->dcls++;
 697     }
 698     displaychangelistener_display_console(dcl, &error_fatal);
 699     if (QEMU_IS_GRAPHIC_CONSOLE(dcl->con)) {
 700         dcl_set_graphic_cursor(dcl, QEMU_GRAPHIC_CONSOLE(dcl->con));
 701     } else if (QEMU_IS_TEXT_CONSOLE(dcl->con)) {
 702         qemu_text_console_update_size(QEMU_TEXT_CONSOLE(dcl->con));
 703     }
 704     qemu_text_console_update_cursor();
 705 }
 706
 707 void update_displaychangelistener(DisplayChangeListener *dcl,
 708                                   uint64_t interval)
 709 {
 710     DisplayState *ds = dcl->ds;
 711
 712     dcl->update_interval = interval;
 713     if (!ds->refreshing && ds->update_interval > interval) {
 714         timer_mod(ds->gui_timer, ds->last_update + interval);
 715     }
 716 }
 717
 718 void unregister_displaychangelistener(DisplayChangeListener *dcl)
 719 {
 720     DisplayState *ds = dcl->ds;
 721     trace_displaychangelistener_unregister(dcl, dcl->ops->dpy_name);
 722     if (dcl->con) {
 723         dcl->con->dcls--;
 724     }
 725     QLIST_REMOVE(dcl, next);
 726     dcl->ds = NULL;
 727     gui_setup_refresh(ds);
 728 }
 729
 730 static void dpy_set_ui_info_timer(void *opaque)
 731 {
 732     QemuConsole *con = opaque;
 733     uint32_t head = qemu_console_get_head(con);
 734
 735     con->hw_ops->ui_info(con->hw, head, &con->ui_info);
 736 }
 737
 738 bool dpy_ui_info_supported(const QemuConsole *con)
 739 {
 740     if (con == NULL) {
 741         return false;
 742     }
 743
 744     return con->hw_ops->ui_info != NULL;
 745 }
 746
 747 const QemuUIInfo *dpy_get_ui_info(const QemuConsole *con)
 748 {
 749     assert(dpy_ui_info_supported(con));
 750
 751     return &con->ui_info;
 752 }
 753
 754 int dpy_set_ui_info(QemuConsole *con, QemuUIInfo *info, bool delay)
 755 {
 756     if (!dpy_ui_info_supported(con)) {
 757         return -1;
 758     }
 759     if (memcmp(&con->ui_info, info, sizeof(con->ui_info)) == 0) {
 760         /* nothing changed -- ignore */
 761         return 0;
 762     }
 763
 764     /*
 765      * Typically we get a flood of these as the user resizes the window.
 766      * Wait until the dust has settled (one second without updates), then
 767      * go notify the guest.
 768      */
 769     con->ui_info = *info;
 770     timer_mod(con->ui_timer,
 771               qemu_clock_get_ms(QEMU_CLOCK_REALTIME) + (delay ? 1000 : 0));
 772     return 0;
 773 }
 774
 775 void dpy_gfx_update(QemuConsole *con, int x, int y, int w, int h)
 776 {
 777     DisplayState *s = con->ds;
 778     DisplayChangeListener *dcl;
 779     int width = qemu_console_get_width(con, x + w);
 780     int height = qemu_console_get_height(con, y + h);
 781
 782     x = MAX(x, 0);
 783     y = MAX(y, 0);
 784     x = MIN(x, width);
 785     y = MIN(y, height);
 786     w = MIN(w, width - x);
 787     h = MIN(h, height - y);
 788
 789     if (!qemu_console_is_visible(con)) {
 790         return;
 791     }
 792     dpy_gfx_update_texture(con, con->surface, x, y, w, h);
 793     QLIST_FOREACH(dcl, &s->listeners, next) {
 794         if (con != dcl->con) {
 795             continue;
 796         }
 797         if (dcl->ops->dpy_gfx_update) {
 798             dcl->ops->dpy_gfx_update(dcl, x, y, w, h);
 799         }
 800     }
 801 }
 802
 803 void dpy_gfx_update_full(QemuConsole *con)
 804 {
 805     int w = qemu_console_get_width(con, 0);
 806     int h = qemu_console_get_height(con, 0);
 807
 808     dpy_gfx_update(con, 0, 0, w, h);
 809 }
 810
 811 void dpy_gfx_replace_surface(QemuConsole *con,
 812                              DisplaySurface *surface)
 813 {
 814     static const char placeholder_msg[] = "Display output is not active.";
 815     DisplayState *s = con->ds;
 816     DisplaySurface *old_surface = con->surface;
 817     DisplaySurface *new_surface = surface;
 818     DisplayChangeListener *dcl;
 819     int width;
 820     int height;
 821
 822     if (!surface) {
 823         if (old_surface) {
 824             width = surface_width(old_surface);
 825             height = surface_height(old_surface);
 826         } else {
 827             width = 640;
 828             height = 480;
 829         }
 830
 831         new_surface = qemu_create_placeholder_surface(width, height, placeholder_msg);
 832     }
 833
 834     assert(old_surface != new_surface);
 835
 836     con->scanout.kind = SCANOUT_SURFACE;
 837     con->surface = new_surface;
 838     dpy_gfx_create_texture(con, new_surface);
 839     QLIST_FOREACH(dcl, &s->listeners, next) {
 840         if (con != dcl->con) {
 841             continue;
 842         }
 843         displaychangelistener_gfx_switch(dcl, new_surface, surface ? FALSE : TRUE);
 844     }
 845     dpy_gfx_destroy_texture(con, old_surface);
 846     qemu_free_displaysurface(old_surface);
 847 }
 848
 849 bool dpy_gfx_check_format(QemuConsole *con,
 850                           pixman_format_code_t format)
 851 {
 852     DisplayChangeListener *dcl;
 853     DisplayState *s = con->ds;
 854
 855     QLIST_FOREACH(dcl, &s->listeners, next) {
 856         if (dcl->con && dcl->con != con) {
 857             /* dcl bound to another console -> skip */
 858             continue;
 859         }
 860         if (dcl->ops->dpy_gfx_check_format) {
 861             if (!dcl->ops->dpy_gfx_check_format(dcl, format)) {
 862                 return false;
 863             }
 864         } else {
 865             /* default is to allow native 32 bpp only */
 866             if (format != qemu_default_pixman_format(32, true)) {
 867                 return false;
 868             }
 869         }
 870     }
 871     return true;
 872 }
 873
 874 static void dpy_refresh(DisplayState *s)
 875 {
 876     DisplayChangeListener *dcl;
 877
 878     QLIST_FOREACH(dcl, &s->listeners, next) {
 879         if (dcl->ops->dpy_refresh) {
 880             dcl->ops->dpy_refresh(dcl);
 881         }
 882     }
 883 }
 884
 885 void dpy_text_cursor(QemuConsole *con, int x, int y)
 886 {
 887     DisplayState *s = con->ds;
 888     DisplayChangeListener *dcl;
 889
 890     if (!qemu_console_is_visible(con)) {
 891         return;
 892     }
 893     QLIST_FOREACH(dcl, &s->listeners, next) {
 894         if (con != dcl->con) {
 895             continue;
 896         }
 897         if (dcl->ops->dpy_text_cursor) {
 898             dcl->ops->dpy_text_cursor(dcl, x, y);
 899         }
 900     }
 901 }
 902
 903 void dpy_text_update(QemuConsole *con, int x, int y, int w, int h)
 904 {
 905     DisplayState *s = con->ds;
 906     DisplayChangeListener *dcl;
 907
 908     if (!qemu_console_is_visible(con)) {
 909         return;
 910     }
 911     QLIST_FOREACH(dcl, &s->listeners, next) {
 912         if (con != dcl->con) {
 913             continue;
 914         }
 915         if (dcl->ops->dpy_text_update) {
 916             dcl->ops->dpy_text_update(dcl, x, y, w, h);
 917         }
 918     }
 919 }
 920
 921 void dpy_text_resize(QemuConsole *con, int w, int h)
 922 {
 923     DisplayState *s = con->ds;
 924     DisplayChangeListener *dcl;
 925
 926     if (!qemu_console_is_visible(con)) {
 927         return;
 928     }
 929     QLIST_FOREACH(dcl, &s->listeners, next) {
 930         if (con != dcl->con) {
 931             continue;
 932         }
 933         if (dcl->ops->dpy_text_resize) {
 934             dcl->ops->dpy_text_resize(dcl, w, h);
 935         }
 936     }
 937 }
 938
 939 void dpy_mouse_set(QemuConsole *c, int x, int y, bool on)
 940 {
 941     QemuGraphicConsole *con = QEMU_GRAPHIC_CONSOLE(c);
 942     DisplayState *s = c->ds;
 943     DisplayChangeListener *dcl;
 944
 945     con->cursor_x = x;
 946     con->cursor_y = y;
 947     con->cursor_on = on;
 948     if (!qemu_console_is_visible(c)) {
 949         return;
 950     }
 951     QLIST_FOREACH(dcl, &s->listeners, next) {
 952         if (c != dcl->con) {
 953             continue;
 954         }
 955         if (dcl->ops->dpy_mouse_set) {
 956             dcl->ops->dpy_mouse_set(dcl, x, y, on);
 957         }
 958     }
 959 }
 960
 961 void dpy_cursor_define(QemuConsole *c, QEMUCursor *cursor)
 962 {
 963     QemuGraphicConsole *con = QEMU_GRAPHIC_CONSOLE(c);
 964     DisplayState *s = c->ds;
 965     DisplayChangeListener *dcl;
 966
 967     cursor_unref(con->cursor);
 968     con->cursor = cursor_ref(cursor);
 969     if (!qemu_console_is_visible(c)) {
 970         return;
 971     }
 972     QLIST_FOREACH(dcl, &s->listeners, next) {
 973         if (c != dcl->con) {
 974             continue;
 975         }
 976         if (dcl->ops->dpy_cursor_define) {
 977             dcl->ops->dpy_cursor_define(dcl, cursor);
 978         }
 979     }
 980 }
 981
 982 QEMUGLContext dpy_gl_ctx_create(QemuConsole *con,
 983                                 struct QEMUGLParams *qparams)
 984 {
 985     assert(con->gl);
 986     return con->gl->ops->dpy_gl_ctx_create(con->gl, qparams);
 987 }
 988
 989 void dpy_gl_ctx_destroy(QemuConsole *con, QEMUGLContext ctx)
 990 {
 991     assert(con->gl);
 992     con->gl->ops->dpy_gl_ctx_destroy(con->gl, ctx);
 993 }
 994
 995 int dpy_gl_ctx_make_current(QemuConsole *con, QEMUGLContext ctx)
 996 {
 997     assert(con->gl);
 998     return con->gl->ops->dpy_gl_ctx_make_current(con->gl, ctx);
 999 }
1000
1001 void dpy_gl_scanout_disable(QemuConsole *con)
1002 {
1003     DisplayState *s = con->ds;
1004     DisplayChangeListener *dcl;
1005
1006     if (con->scanout.kind != SCANOUT_SURFACE) {
1007         con->scanout.kind = SCANOUT_NONE;
1008     }
1009     QLIST_FOREACH(dcl, &s->listeners, next) {
1010         if (con != dcl->con) {
1011             continue;
1012         }
1013         if (dcl->ops->dpy_gl_scanout_disable) {
1014             dcl->ops->dpy_gl_scanout_disable(dcl);
1015         }
1016     }
1017 }
1018
1019 void dpy_gl_scanout_texture(QemuConsole *con,
1020                             uint32_t backing_id,
1021                             bool backing_y_0_top,
1022                             uint32_t backing_width,
1023                             uint32_t backing_height,
1024                             uint32_t x, uint32_t y,
1025                             uint32_t width, uint32_t height,
1026                             void *d3d_tex2d)
1027 {
1028     DisplayState *s = con->ds;
1029     DisplayChangeListener *dcl;
1030
1031     con->scanout.kind = SCANOUT_TEXTURE;
1032     con->scanout.texture = (ScanoutTexture) {
1033         backing_id, backing_y_0_top, backing_width, backing_height,
1034         x, y, width, height, d3d_tex2d,
1035     };
1036     QLIST_FOREACH(dcl, &s->listeners, next) {
1037         if (con != dcl->con) {
1038             continue;
1039         }
1040         if (dcl->ops->dpy_gl_scanout_texture) {
1041             dcl->ops->dpy_gl_scanout_texture(dcl, backing_id,
1042                                              backing_y_0_top,
1043                                              backing_width, backing_height,
1044                                              x, y, width, height,
1045                                              d3d_tex2d);
1046         }
1047     }
1048 }
1049
1050 void dpy_gl_scanout_dmabuf(QemuConsole *con,
1051                            QemuDmaBuf *dmabuf)
1052 {
1053     DisplayState *s = con->ds;
1054     DisplayChangeListener *dcl;
1055
1056     con->scanout.kind = SCANOUT_DMABUF;
1057     con->scanout.dmabuf = dmabuf;
1058     QLIST_FOREACH(dcl, &s->listeners, next) {
1059         if (con != dcl->con) {
1060             continue;
1061         }
1062         if (dcl->ops->dpy_gl_scanout_dmabuf) {
1063             dcl->ops->dpy_gl_scanout_dmabuf(dcl, dmabuf);
1064         }
1065     }
1066 }
1067
1068 void dpy_gl_cursor_dmabuf(QemuConsole *con, QemuDmaBuf *dmabuf,
1069                           bool have_hot, uint32_t hot_x, uint32_t hot_y)
1070 {
1071     DisplayState *s = con->ds;
1072     DisplayChangeListener *dcl;
1073
1074     QLIST_FOREACH(dcl, &s->listeners, next) {
1075         if (con != dcl->con) {
1076             continue;
1077         }
1078         if (dcl->ops->dpy_gl_cursor_dmabuf) {
1079             dcl->ops->dpy_gl_cursor_dmabuf(dcl, dmabuf,
1080                                            have_hot, hot_x, hot_y);
1081         }
1082     }
1083 }
1084
1085 void dpy_gl_cursor_position(QemuConsole *con,
1086                             uint32_t pos_x, uint32_t pos_y)
1087 {
1088     DisplayState *s = con->ds;
1089     DisplayChangeListener *dcl;
1090
1091     QLIST_FOREACH(dcl, &s->listeners, next) {
1092         if (con != dcl->con) {
1093             continue;
1094         }
1095         if (dcl->ops->dpy_gl_cursor_position) {
1096             dcl->ops->dpy_gl_cursor_position(dcl, pos_x, pos_y);
1097         }
1098     }
1099 }
1100
1101 void dpy_gl_release_dmabuf(QemuConsole *con,
1102                           QemuDmaBuf *dmabuf)
1103 {
1104     DisplayState *s = con->ds;
1105     DisplayChangeListener *dcl;
1106
1107     QLIST_FOREACH(dcl, &s->listeners, next) {
1108         if (con != dcl->con) {
1109             continue;
1110         }
1111         if (dcl->ops->dpy_gl_release_dmabuf) {
1112             dcl->ops->dpy_gl_release_dmabuf(dcl, dmabuf);
1113         }
1114     }
1115 }
1116
1117 void dpy_gl_update(QemuConsole *con,
1118                    uint32_t x, uint32_t y, uint32_t w, uint32_t h)
1119 {
1120     DisplayState *s = con->ds;
1121     DisplayChangeListener *dcl;
1122
1123     assert(con->gl);
1124
1125     graphic_hw_gl_block(con, true);
1126     QLIST_FOREACH(dcl, &s->listeners, next) {
1127         if (con != dcl->con) {
1128             continue;
1129         }
1130         if (dcl->ops->dpy_gl_update) {
1131             dcl->ops->dpy_gl_update(dcl, x, y, w, h);
1132         }
1133     }
1134     graphic_hw_gl_block(con, false);
1135 }
1136
1137 /***********************************************************/
1138 /* register display */
1139
1140 /* console.c internal use only */
1141 static DisplayState *get_alloc_displaystate(void)
1142 {
1143     if (!display_state) {
1144         display_state = g_new0(DisplayState, 1);
1145     }
1146     return display_state;
1147 }
1148
1149 /*
1150  * Called by main(), after creating QemuConsoles
1151  * and before initializing ui (sdl/vnc/...).
1152  */
1153 DisplayState *init_displaystate(void)
1154 {
1155     gchar *name;
1156     QemuConsole *con;
1157
1158     QTAILQ_FOREACH(con, &consoles, next) {
1159         /* Hook up into the qom tree here (not in object_new()), once
1160          * all QemuConsoles are created and the order / numbering
1161          * doesn't change any more */
1162         name = g_strdup_printf("console[%d]", con->index);
1163         object_property_add_child(container_get(object_get_root(), "/backend"),
1164                                   name, OBJECT(con));
1165         g_free(name);
1166     }
1167
1168     return display_state;
1169 }
1170
1171 void graphic_console_set_hwops(QemuConsole *con,
1172                                const GraphicHwOps *hw_ops,
1173                                void *opaque)
1174 {
1175     con->hw_ops = hw_ops;
1176     con->hw = opaque;
1177 }
1178
1179 QemuConsole *graphic_console_init(DeviceState *dev, uint32_t head,
1180                                   const GraphicHwOps *hw_ops,
1181                                   void *opaque)
1182 {
1183     static const char noinit[] =
1184         "Guest has not initialized the display (yet).";
1185     int width = 640;
1186     int height = 480;
1187     QemuConsole *s;
1188     DisplaySurface *surface;
1189
1190     s = qemu_graphic_console_lookup_unused();
1191     if (s) {
1192         trace_console_gfx_reuse(s->index);
1193         width = qemu_console_get_width(s, 0);
1194         height = qemu_console_get_height(s, 0);
1195     } else {
1196         trace_console_gfx_new();
1197         s = (QemuConsole *)object_new(TYPE_QEMU_GRAPHIC_CONSOLE);
1198     }
1199     QEMU_GRAPHIC_CONSOLE(s)->head = head;
1200     graphic_console_set_hwops(s, hw_ops, opaque);
1201     if (dev) {
1202         object_property_set_link(OBJECT(s), "device", OBJECT(dev),
1203                                  &error_abort);
1204     }
1205
1206     surface = qemu_create_placeholder_surface(width, height, noinit);
1207     dpy_gfx_replace_surface(s, surface);
1208     s->gl_unblock_timer = timer_new_ms(QEMU_CLOCK_REALTIME,
1209                                        graphic_hw_gl_unblock_timer, s);
1210     return s;
1211 }
1212
1213 static const GraphicHwOps unused_ops = {
1214     /* no callbacks */
1215 };
1216
1217 void graphic_console_close(QemuConsole *con)
1218 {
1219     static const char unplugged[] =
1220         "Guest display has been unplugged";
1221     DisplaySurface *surface;
1222     int width = qemu_console_get_width(con, 640);
1223     int height = qemu_console_get_height(con, 480);
1224
1225     trace_console_gfx_close(con->index);
1226     object_property_set_link(OBJECT(con), "device", NULL, &error_abort);
1227     graphic_console_set_hwops(con, &unused_ops, NULL);
1228
1229     if (con->gl) {
1230         dpy_gl_scanout_disable(con);
1231     }
1232     surface = qemu_create_placeholder_surface(width, height, unplugged);
1233     dpy_gfx_replace_surface(con, surface);
1234 }
1235
1236 QemuConsole *qemu_console_lookup_default(void)
1237 {
1238     QemuConsole *con;
1239
1240     QTAILQ_FOREACH(con, &consoles, next) {
1241         if (QEMU_IS_GRAPHIC_CONSOLE(con)) {
1242             return con;
1243         }
1244     }
1245     return QTAILQ_FIRST(&consoles);
1246 }
1247
1248 QemuConsole *qemu_console_lookup_by_index(unsigned int index)
1249 {
1250     QemuConsole *con;
1251
1252     QTAILQ_FOREACH(con, &consoles, next) {
1253         if (con->index == index) {
1254             return con;
1255         }
1256     }
1257     return NULL;
1258 }
1259
1260 QemuConsole *qemu_console_lookup_by_device(DeviceState *dev, uint32_t head)
1261 {
1262     QemuConsole *con;
1263     Object *obj;
1264     uint32_t h;
1265
1266     QTAILQ_FOREACH(con, &consoles, next) {
1267         obj = object_property_get_link(OBJECT(con),
1268                                        "device", &error_abort);
1269         if (DEVICE(obj) != dev) {
1270             continue;
1271         }
1272         h = object_property_get_uint(OBJECT(con),
1273                                      "head", &error_abort);
1274         if (h != head) {
1275             continue;
1276         }
1277         return con;
1278     }
1279     return NULL;
1280 }
1281
1282 QemuConsole *qemu_console_lookup_by_device_name(const char *device_id,
1283                                                 uint32_t head, Error **errp)
1284 {
1285     DeviceState *dev;
1286     QemuConsole *con;
1287
1288     dev = qdev_find_recursive(sysbus_get_default(), device_id);
1289     if (dev == NULL) {
1290         error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
1291                   "Device '%s' not found", device_id);
1292         return NULL;
1293     }
1294
1295     con = qemu_console_lookup_by_device(dev, head);
1296     if (con == NULL) {
1297         error_setg(errp, "Device %s (head %d) is not bound to a QemuConsole",
1298                    device_id, head);
1299         return NULL;
1300     }
1301
1302     return con;
1303 }
1304
1305 static QemuConsole *qemu_graphic_console_lookup_unused(void)
1306 {
1307     QemuConsole *con;
1308     Object *obj;
1309
1310     QTAILQ_FOREACH(con, &consoles, next) {
1311         if (!QEMU_IS_GRAPHIC_CONSOLE(con) || con->hw_ops != &unused_ops) {
1312             continue;
1313         }
1314         obj = object_property_get_link(OBJECT(con),
1315                                        "device", &error_abort);
1316         if (obj != NULL) {
1317             continue;
1318         }
1319         return con;
1320     }
1321     return NULL;
1322 }
1323
1324 QEMUCursor *qemu_console_get_cursor(QemuConsole *con)
1325 {
1326     return QEMU_IS_GRAPHIC_CONSOLE(con) ? QEMU_GRAPHIC_CONSOLE(con)->cursor : NULL;
1327 }
1328
1329 bool qemu_console_is_visible(QemuConsole *con)
1330 {
1331     return con->dcls > 0;
1332 }
1333
1334 bool qemu_console_is_graphic(QemuConsole *con)
1335 {
1336     return con && QEMU_IS_GRAPHIC_CONSOLE(con);
1337 }
1338
1339 bool qemu_console_is_fixedsize(QemuConsole *con)
1340 {
1341     return con && (QEMU_IS_GRAPHIC_CONSOLE(con) || QEMU_IS_FIXED_TEXT_CONSOLE(con));
1342 }
1343
1344 bool qemu_console_is_gl_blocked(QemuConsole *con)
1345 {
1346     assert(con != NULL);
1347     return con->gl_block;
1348 }
1349
1350 static bool qemu_graphic_console_is_multihead(QemuGraphicConsole *c)
1351 {
1352     QemuConsole *con;
1353
1354     QTAILQ_FOREACH(con, &consoles, next) {
1355         QemuGraphicConsole *candidate;
1356
1357         if (!QEMU_IS_GRAPHIC_CONSOLE(con)) {
1358             continue;
1359         }
1360
1361         candidate = QEMU_GRAPHIC_CONSOLE(con);
1362         if (candidate->device != c->device) {
1363             continue;
1364         }
1365
1366         if (candidate->head != c->head) {
1367             return true;
1368         }
1369     }
1370     return false;
1371 }
1372
1373 char *qemu_console_get_label(QemuConsole *con)
1374 {
1375     if (QEMU_IS_GRAPHIC_CONSOLE(con)) {
1376         QemuGraphicConsole *c = QEMU_GRAPHIC_CONSOLE(con);
1377         if (c->device) {
1378             DeviceState *dev;
1379             bool multihead;
1380
1381             dev = DEVICE(c->device);
1382             multihead = qemu_graphic_console_is_multihead(c);
1383             if (multihead) {
1384                 return g_strdup_printf("%s.%d", dev->id ?
1385                                        dev->id :
1386                                        object_get_typename(c->device),
1387                                        c->head);
1388             } else {
1389                 return g_strdup_printf("%s", dev->id ?
1390                                        dev->id :
1391                                        object_get_typename(c->device));
1392             }
1393         }
1394         return g_strdup("VGA");
1395     } else if (QEMU_IS_TEXT_CONSOLE(con)) {
1396         const char *label = qemu_text_console_get_label(QEMU_TEXT_CONSOLE(con));
1397         if (label) {
1398             return g_strdup(label);
1399         }
1400     }
1401
1402     return g_strdup_printf("vc%d", con->index);
1403 }
1404
1405 int qemu_console_get_index(QemuConsole *con)
1406 {
1407     return con ? con->index : -1;
1408 }
1409
1410 uint32_t qemu_console_get_head(QemuConsole *con)
1411 {
1412     if (con == NULL) {
1413         return -1;
1414     }
1415     if (QEMU_IS_GRAPHIC_CONSOLE(con)) {
1416         return QEMU_GRAPHIC_CONSOLE(con)->head;
1417     }
1418     return 0;
1419 }
1420
1421 int qemu_console_get_width(QemuConsole *con, int fallback)
1422 {
1423     if (con == NULL) {
1424         return fallback;
1425     }
1426     switch (con->scanout.kind) {
1427     case SCANOUT_DMABUF:
1428         return qemu_dmabuf_get_width(con->scanout.dmabuf);
1429     case SCANOUT_TEXTURE:
1430         return con->scanout.texture.width;
1431     case SCANOUT_SURFACE:
1432         return surface_width(con->surface);
1433     default:
1434         return fallback;
1435     }
1436 }
1437
1438 int qemu_console_get_height(QemuConsole *con, int fallback)
1439 {
1440     if (con == NULL) {
1441         return fallback;
1442     }
1443     switch (con->scanout.kind) {
1444     case SCANOUT_DMABUF:
1445         return qemu_dmabuf_get_height(con->scanout.dmabuf);
1446     case SCANOUT_TEXTURE:
1447         return con->scanout.texture.height;
1448     case SCANOUT_SURFACE:
1449         return surface_height(con->surface);
1450     default:
1451         return fallback;
1452     }
1453 }
1454
1455 int qemu_invalidate_text_consoles(void)
1456 {
1457     QemuConsole *s;
1458     int count = 0;
1459
1460     QTAILQ_FOREACH(s, &consoles, next) {
1461         if (qemu_console_is_graphic(s) ||
1462             !qemu_console_is_visible(s)) {
1463             continue;
1464         }
1465         count++;
1466         graphic_hw_invalidate(s);
1467     }
1468
1469     return count;
1470 }
1471
1472 void qemu_console_resize(QemuConsole *s, int width, int height)
1473 {
1474     DisplaySurface *surface = qemu_console_surface(s);
1475
1476     assert(QEMU_IS_GRAPHIC_CONSOLE(s));
1477
1478     if ((s->scanout.kind != SCANOUT_SURFACE ||
1479          (surface && surface_is_allocated(surface) &&
1480                      !surface_is_placeholder(surface))) &&
1481         qemu_console_get_width(s, -1) == width &&
1482         qemu_console_get_height(s, -1) == height) {
1483         return;
1484     }
1485
1486     surface = qemu_create_displaysurface(width, height);
1487     dpy_gfx_replace_surface(s, surface);
1488 }
1489
1490 DisplaySurface *qemu_console_surface(QemuConsole *console)
1491 {
1492     switch (console->scanout.kind) {
1493     case SCANOUT_SURFACE:
1494         return console->surface;
1495     default:
1496         return NULL;
1497     }
1498 }
1499
1500 PixelFormat qemu_default_pixelformat(int bpp)
1501 {
1502     pixman_format_code_t fmt = qemu_default_pixman_format(bpp, true);
1503     PixelFormat pf = qemu_pixelformat_from_pixman(fmt);
1504     return pf;
1505 }
1506
1507 static QemuDisplay *dpys[DISPLAY_TYPE__MAX];
1508
1509 void qemu_display_register(QemuDisplay *ui)
1510 {
1511     assert(ui->type < DISPLAY_TYPE__MAX);
1512     dpys[ui->type] = ui;
1513 }
1514
1515 bool qemu_display_find_default(DisplayOptions *opts)
1516 {
1517     static DisplayType prio[] = {
1518 #if defined(CONFIG_GTK)
1519         DISPLAY_TYPE_GTK,
1520 #endif
1521 #if defined(CONFIG_SDL)
1522         DISPLAY_TYPE_SDL,
1523 #endif
1524 #if defined(CONFIG_COCOA)
1525         DISPLAY_TYPE_COCOA
1526 #endif
1527     };
1528     int i;
1529
1530     for (i = 0; i < (int)ARRAY_SIZE(prio); i++) {
1531         if (dpys[prio[i]] == NULL) {
1532             Error *local_err = NULL;
1533             int rv = ui_module_load(DisplayType_str(prio[i]), &local_err);
1534             if (rv < 0) {
1535                 error_report_err(local_err);
1536             }
1537         }
1538         if (dpys[prio[i]] == NULL) {
1539             continue;
1540         }
1541         opts->type = prio[i];
1542         return true;
1543     }
1544     return false;
1545 }
1546
1547 void qemu_display_early_init(DisplayOptions *opts)
1548 {
1549     assert(opts->type < DISPLAY_TYPE__MAX);
1550     if (opts->type == DISPLAY_TYPE_NONE) {
1551         return;
1552     }
1553     if (dpys[opts->type] == NULL) {
1554         Error *local_err = NULL;
1555         int rv = ui_module_load(DisplayType_str(opts->type), &local_err);
1556         if (rv < 0) {
1557             error_report_err(local_err);
1558         }
1559     }
1560     if (dpys[opts->type] == NULL) {
1561         error_report("Display '%s' is not available.",
1562                      DisplayType_str(opts->type));
1563         exit(1);
1564     }
1565     if (dpys[opts->type]->early_init) {
1566         dpys[opts->type]->early_init(opts);
1567     }
1568 }
1569
1570 void qemu_display_init(DisplayState *ds, DisplayOptions *opts)
1571 {
1572     assert(opts->type < DISPLAY_TYPE__MAX);
1573     if (opts->type == DISPLAY_TYPE_NONE) {
1574         return;
1575     }
1576     assert(dpys[opts->type] != NULL);
1577     dpys[opts->type]->init(ds, opts);
1578 }
1579
1580 const char *qemu_display_get_vc(DisplayOptions *opts)
1581 {
1582 #ifdef CONFIG_PIXMAN
1583     const char *vc = "vc:80Cx24C";
1584 #else
1585     const char *vc = NULL;
1586 #endif
1587
1588     assert(opts->type < DISPLAY_TYPE__MAX);
1589     if (dpys[opts->type] && dpys[opts->type]->vc) {
1590         vc = dpys[opts->type]->vc;
1591     }
1592     return vc;
1593 }
1594
1595 void qemu_display_help(void)
1596 {
1597     int idx;
1598
1599     printf("Available display backend types:\n");
1600     printf("none\n");
1601     for (idx = DISPLAY_TYPE_NONE; idx < DISPLAY_TYPE__MAX; idx++) {
1602         if (!dpys[idx]) {
1603             Error *local_err = NULL;
1604             int rv = ui_module_load(DisplayType_str(idx), &local_err);
1605             if (rv < 0) {
1606                 error_report_err(local_err);
1607             }
1608         }
1609         if (dpys[idx]) {
1610             printf("%s\n",  DisplayType_str(dpys[idx]->type));
1611         }
1612     }
1613     printf("\n"
1614            "Some display backends support suboptions, which can be set with\n"
1615            "   -display backend,option=value,option=value...\n"
1616            "For a short list of the suboptions for each display, see the "
1617            "top-level -help output; more detail is in the documentation.\n");
1618 }