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qemu/ui/console.c
Laszlo Ersek 65d7ceb49b ui/console: sanitize search in qemu_graphic_console_is_multihead() 
qemu_graphic_console_is_multihead() declares the graphical console "c" a
"multihead" console if there are two different graphical consoles in the
system that (a) both reference "c->device", and (b) have different
"c->head" numbers. In effect, if at least two graphical consoles exist
that are different heads of the same device that underlies "c". In fact,
"c" may be one of these two graphical consoles, or "c" may differ from
both of those consoles (in case "c->device" has at least three heads).

The loop currently uses this awkward "two different consoles" approach
because the function used not to have access to "c", only to "c->device",
which didn't allow for fetching (and comparing) "c->head". But, we've
changed that in the last patch; we now pass all of "c" to
qemu_graphic_console_is_multihead().

Thus, look for the *first* (and possibly *only*) graphical console, if
any, that refers to the same "device" as "c", but by a different "head"
number.

Cc: "Marc-André Lureau" <marcandre.lureau@redhat.com> (odd fixer:Graphics)
Cc: Gerd Hoffmann <kraxel@redhat.com> (odd fixer:Graphics)
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-ID: <20230913144959.41891-5-lersek@redhat.com>
2023-10-03 15:04:56 +04:00

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/*
* QEMU graphical console
*
* Copyright (c) 2004 Fabrice Bellard
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "qemu/osdep.h"
#include "ui/console.h"
#include "hw/qdev-core.h"
#include "qapi/error.h"
#include "qapi/qapi-commands-ui.h"
#include "qapi/visitor.h"
#include "qemu/coroutine.h"
#include "qemu/error-report.h"
#include "qemu/main-loop.h"
#include "qemu/module.h"
#include "qemu/option.h"
#include "chardev/char.h"
#include "trace.h"
#include "exec/memory.h"
#include "qom/object.h"
#include "console-priv.h"
OBJECT_DEFINE_ABSTRACT_TYPE(QemuConsole, qemu_console, QEMU_CONSOLE, OBJECT)
typedef struct QemuGraphicConsole {
QemuConsole parent;
Object *device;
uint32_t head;
QEMUCursor *cursor;
int cursor_x, cursor_y, cursor_on;
} QemuGraphicConsole;
typedef QemuConsoleClass QemuGraphicConsoleClass;
OBJECT_DEFINE_TYPE(QemuGraphicConsole, qemu_graphic_console, QEMU_GRAPHIC_CONSOLE, QEMU_CONSOLE)
struct DisplayState {
QEMUTimer *gui_timer;
uint64_t last_update;
uint64_t update_interval;
bool refreshing;
QLIST_HEAD(, DisplayChangeListener) listeners;
};
static DisplayState *display_state;
static QemuConsole *active_console;
static QTAILQ_HEAD(, QemuConsole) consoles =
QTAILQ_HEAD_INITIALIZER(consoles);
static void dpy_refresh(DisplayState *s);
static DisplayState *get_alloc_displaystate(void);
static bool displaychangelistener_has_dmabuf(DisplayChangeListener *dcl);
static bool console_compatible_with(QemuConsole *con,
DisplayChangeListener *dcl, Error **errp);
static QemuConsole *qemu_graphic_console_lookup_unused(void);
static void dpy_set_ui_info_timer(void *opaque);
static void gui_update(void *opaque)
{
uint64_t interval = GUI_REFRESH_INTERVAL_IDLE;
uint64_t dcl_interval;
DisplayState *ds = opaque;
DisplayChangeListener *dcl;
ds->refreshing = true;
dpy_refresh(ds);
ds->refreshing = false;
QLIST_FOREACH(dcl, &ds->listeners, next) {
dcl_interval = dcl->update_interval ?
dcl->update_interval : GUI_REFRESH_INTERVAL_DEFAULT;
if (interval > dcl_interval) {
interval = dcl_interval;
}
}
if (ds->update_interval != interval) {
ds->update_interval = interval;
trace_console_refresh(interval);
}
ds->last_update = qemu_clock_get_ms(QEMU_CLOCK_REALTIME);
timer_mod(ds->gui_timer, ds->last_update + interval);
}
static void gui_setup_refresh(DisplayState *ds)
{
DisplayChangeListener *dcl;
bool need_timer = false;
QLIST_FOREACH(dcl, &ds->listeners, next) {
if (dcl->ops->dpy_refresh != NULL) {
need_timer = true;
}
}
if (need_timer && ds->gui_timer == NULL) {
ds->gui_timer = timer_new_ms(QEMU_CLOCK_REALTIME, gui_update, ds);
timer_mod(ds->gui_timer, qemu_clock_get_ms(QEMU_CLOCK_REALTIME));
}
if (!need_timer && ds->gui_timer != NULL) {
timer_free(ds->gui_timer);
ds->gui_timer = NULL;
}
}
void graphic_hw_update_done(QemuConsole *con)
{
if (con) {
qemu_co_enter_all(&con->dump_queue, NULL);
}
}
void graphic_hw_update(QemuConsole *con)
{
bool async = false;
con = con ? con : active_console;
if (!con) {
return;
}
if (con->hw_ops->gfx_update) {
con->hw_ops->gfx_update(con->hw);
async = con->hw_ops->gfx_update_async;
}
if (!async) {
graphic_hw_update_done(con);
}
}
static void graphic_hw_update_bh(void *con)
{
graphic_hw_update(con);
}
void qemu_console_co_wait_update(QemuConsole *con)
{
if (qemu_co_queue_empty(&con->dump_queue)) {
/* Defer the update, it will restart the pending coroutines */
aio_bh_schedule_oneshot(qemu_get_aio_context(),
graphic_hw_update_bh, con);
}
qemu_co_queue_wait(&con->dump_queue, NULL);
}
static void graphic_hw_gl_unblock_timer(void *opaque)
{
warn_report("console: no gl-unblock within one second");
}
void graphic_hw_gl_block(QemuConsole *con, bool block)
{
uint64_t timeout;
assert(con != NULL);
if (block) {
con->gl_block++;
} else {
con->gl_block--;
}
assert(con->gl_block >= 0);
if (!con->hw_ops->gl_block) {
return;
}
if ((block && con->gl_block != 1) || (!block && con->gl_block != 0)) {
return;
}
con->hw_ops->gl_block(con->hw, block);
if (block) {
timeout = qemu_clock_get_ms(QEMU_CLOCK_REALTIME);
timeout += 1000; /* one sec */
timer_mod(con->gl_unblock_timer, timeout);
} else {
timer_del(con->gl_unblock_timer);
}
}
int qemu_console_get_window_id(QemuConsole *con)
{
return con->window_id;
}
void qemu_console_set_window_id(QemuConsole *con, int window_id)
{
con->window_id = window_id;
}
void graphic_hw_invalidate(QemuConsole *con)
{
if (!con) {
con = active_console;
}
if (con && con->hw_ops->invalidate) {
con->hw_ops->invalidate(con->hw);
}
}
void graphic_hw_text_update(QemuConsole *con, console_ch_t *chardata)
{
if (!con) {
con = active_console;
}
if (con && con->hw_ops->text_update) {
con->hw_ops->text_update(con->hw, chardata);
}
}
static void displaychangelistener_gfx_switch(DisplayChangeListener *dcl,
struct DisplaySurface *new_surface,
bool update)
{
if (dcl->ops->dpy_gfx_switch) {
dcl->ops->dpy_gfx_switch(dcl, new_surface);
}
if (update && dcl->ops->dpy_gfx_update) {
dcl->ops->dpy_gfx_update(dcl, 0, 0,
surface_width(new_surface),
surface_height(new_surface));
}
}
static void dpy_gfx_create_texture(QemuConsole *con, DisplaySurface *surface)
{
if (con->gl && con->gl->ops->dpy_gl_ctx_create_texture) {
con->gl->ops->dpy_gl_ctx_create_texture(con->gl, surface);
}
}
static void dpy_gfx_destroy_texture(QemuConsole *con, DisplaySurface *surface)
{
if (con->gl && con->gl->ops->dpy_gl_ctx_destroy_texture) {
con->gl->ops->dpy_gl_ctx_destroy_texture(con->gl, surface);
}
}
static void dpy_gfx_update_texture(QemuConsole *con, DisplaySurface *surface,
int x, int y, int w, int h)
{
if (con->gl && con->gl->ops->dpy_gl_ctx_update_texture) {
con->gl->ops->dpy_gl_ctx_update_texture(con->gl, surface, x, y, w, h);
}
}
static void displaychangelistener_display_console(DisplayChangeListener *dcl,
QemuConsole *con,
Error **errp)
{
static const char nodev[] =
"This VM has no graphic display device.";
static DisplaySurface *dummy;
if (!con || !console_compatible_with(con, dcl, errp)) {
if (!dummy) {
dummy = qemu_create_placeholder_surface(640, 480, nodev);
}
if (con) {
dpy_gfx_create_texture(con, dummy);
}
displaychangelistener_gfx_switch(dcl, dummy, TRUE);
return;
}
dpy_gfx_create_texture(con, con->surface);
displaychangelistener_gfx_switch(dcl, con->surface,
con->scanout.kind == SCANOUT_SURFACE);
if (con->scanout.kind == SCANOUT_DMABUF &&
displaychangelistener_has_dmabuf(dcl)) {
dcl->ops->dpy_gl_scanout_dmabuf(dcl, con->scanout.dmabuf);
} else if (con->scanout.kind == SCANOUT_TEXTURE &&
dcl->ops->dpy_gl_scanout_texture) {
dcl->ops->dpy_gl_scanout_texture(dcl,
con->scanout.texture.backing_id,
con->scanout.texture.backing_y_0_top,
con->scanout.texture.backing_width,
con->scanout.texture.backing_height,
con->scanout.texture.x,
con->scanout.texture.y,
con->scanout.texture.width,
con->scanout.texture.height,
con->scanout.texture.d3d_tex2d);
}
}
void console_select(unsigned int index)
{
DisplayChangeListener *dcl;
QemuConsole *s;
trace_console_select(index);
s = qemu_console_lookup_by_index(index);
if (s) {
DisplayState *ds = s->ds;
active_console = s;
QLIST_FOREACH (dcl, &ds->listeners, next) {
if (dcl->con != NULL) {
continue;
}
displaychangelistener_display_console(dcl, s, NULL);
}
if (QEMU_IS_TEXT_CONSOLE(s)) {
qemu_text_console_select(QEMU_TEXT_CONSOLE(s));
}
}
}
void qemu_text_console_put_keysym(QemuTextConsole *s, int keysym)
{
if (!s) {
if (!QEMU_IS_TEXT_CONSOLE(active_console)) {
return;
}
s = QEMU_TEXT_CONSOLE(active_console);
}
qemu_text_console_handle_keysym(s, keysym);
}
static const int qcode_to_keysym[Q_KEY_CODE__MAX] = {
[Q_KEY_CODE_UP] = QEMU_KEY_UP,
[Q_KEY_CODE_DOWN] = QEMU_KEY_DOWN,
[Q_KEY_CODE_RIGHT] = QEMU_KEY_RIGHT,
[Q_KEY_CODE_LEFT] = QEMU_KEY_LEFT,
[Q_KEY_CODE_HOME] = QEMU_KEY_HOME,
[Q_KEY_CODE_END] = QEMU_KEY_END,
[Q_KEY_CODE_PGUP] = QEMU_KEY_PAGEUP,
[Q_KEY_CODE_PGDN] = QEMU_KEY_PAGEDOWN,
[Q_KEY_CODE_DELETE] = QEMU_KEY_DELETE,
[Q_KEY_CODE_TAB] = QEMU_KEY_TAB,
[Q_KEY_CODE_BACKSPACE] = QEMU_KEY_BACKSPACE,
};
static const int ctrl_qcode_to_keysym[Q_KEY_CODE__MAX] = {
[Q_KEY_CODE_UP] = QEMU_KEY_CTRL_UP,
[Q_KEY_CODE_DOWN] = QEMU_KEY_CTRL_DOWN,
[Q_KEY_CODE_RIGHT] = QEMU_KEY_CTRL_RIGHT,
[Q_KEY_CODE_LEFT] = QEMU_KEY_CTRL_LEFT,
[Q_KEY_CODE_HOME] = QEMU_KEY_CTRL_HOME,
[Q_KEY_CODE_END] = QEMU_KEY_CTRL_END,
[Q_KEY_CODE_PGUP] = QEMU_KEY_CTRL_PAGEUP,
[Q_KEY_CODE_PGDN] = QEMU_KEY_CTRL_PAGEDOWN,
};
bool qemu_text_console_put_qcode(QemuTextConsole *s, int qcode, bool ctrl)
{
int keysym;
keysym = ctrl ? ctrl_qcode_to_keysym[qcode] : qcode_to_keysym[qcode];
if (keysym == 0) {
return false;
}
qemu_text_console_put_keysym(s, keysym);
return true;
}
void qemu_text_console_put_string(QemuTextConsole *s, const char *str, int len)
{
int i;
for (i = 0; i < len && str[i]; i++) {
qemu_text_console_put_keysym(s, str[i]);
}
}
static void
qemu_console_register(QemuConsole *c)
{
int i;
if (!active_console || (!QEMU_IS_GRAPHIC_CONSOLE(active_console) &&
QEMU_IS_GRAPHIC_CONSOLE(c))) {
active_console = c;
}
if (QTAILQ_EMPTY(&consoles)) {
c->index = 0;
QTAILQ_INSERT_TAIL(&consoles, c, next);
} else if (!QEMU_IS_GRAPHIC_CONSOLE(c) || phase_check(PHASE_MACHINE_READY)) {
QemuConsole *last = QTAILQ_LAST(&consoles);
c->index = last->index + 1;
QTAILQ_INSERT_TAIL(&consoles, c, next);
} else {
/*
* HACK: Put graphical consoles before text consoles.
*
* Only do that for coldplugged devices. After initial device
* initialization we will not renumber the consoles any more.
*/
QemuConsole *it = QTAILQ_FIRST(&consoles);
while (QTAILQ_NEXT(it, next) != NULL && QEMU_IS_GRAPHIC_CONSOLE(it)) {
it = QTAILQ_NEXT(it, next);
}
if (QEMU_IS_GRAPHIC_CONSOLE(it)) {
/* have no text consoles */
c->index = it->index + 1;
QTAILQ_INSERT_AFTER(&consoles, it, c, next);
} else {
c->index = it->index;
QTAILQ_INSERT_BEFORE(it, c, next);
/* renumber text consoles */
for (i = c->index + 1; it != NULL; it = QTAILQ_NEXT(it, next), i++) {
it->index = i;
}
}
}
}
static void
qemu_console_finalize(Object *obj)
{
QemuConsole *c = QEMU_CONSOLE(obj);
/* TODO: check this code path, and unregister from consoles */
g_clear_pointer(&c->surface, qemu_free_displaysurface);
g_clear_pointer(&c->gl_unblock_timer, timer_free);
g_clear_pointer(&c->ui_timer, timer_free);
}
static void
qemu_console_class_init(ObjectClass *oc, void *data)
{
}
static void
qemu_console_init(Object *obj)
{
QemuConsole *c = QEMU_CONSOLE(obj);
DisplayState *ds = get_alloc_displaystate();
qemu_co_queue_init(&c->dump_queue);
c->ds = ds;
c->window_id = -1;
c->ui_timer = timer_new_ms(QEMU_CLOCK_REALTIME,
dpy_set_ui_info_timer, c);
qemu_console_register(c);
}
static void
qemu_graphic_console_finalize(Object *obj)
{
QemuGraphicConsole *c = QEMU_GRAPHIC_CONSOLE(obj);
g_clear_pointer(&c->device, object_unref);
}
static void
qemu_graphic_console_prop_get_head(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
QemuGraphicConsole *c = QEMU_GRAPHIC_CONSOLE(obj);
visit_type_uint32(v, name, &c->head, errp);
}
static void
qemu_graphic_console_class_init(ObjectClass *oc, void *data)
{
object_class_property_add_link(oc, "device", TYPE_DEVICE,
offsetof(QemuGraphicConsole, device),
object_property_allow_set_link,
OBJ_PROP_LINK_STRONG);
object_class_property_add(oc, "head", "uint32",
qemu_graphic_console_prop_get_head,
NULL, NULL, NULL);
}
static void
qemu_graphic_console_init(Object *obj)
{
}
#ifdef WIN32
void qemu_displaysurface_win32_set_handle(DisplaySurface *surface,
HANDLE h, uint32_t offset)
{
assert(!surface->handle);
surface->handle = h;
surface->handle_offset = offset;
}
static void
win32_pixman_image_destroy(pixman_image_t *image, void *data)
{
DisplaySurface *surface = data;
if (!surface->handle) {
return;
}
assert(surface->handle_offset == 0);
qemu_win32_map_free(
pixman_image_get_data(surface->image),
surface->handle,
&error_warn
);
}
#endif
DisplaySurface *qemu_create_displaysurface(int width, int height)
{
DisplaySurface *surface;
void *bits = NULL;
#ifdef WIN32
HANDLE handle = NULL;
#endif
trace_displaysurface_create(width, height);
#ifdef WIN32
bits = qemu_win32_map_alloc(width * height * 4, &handle, &error_abort);
#endif
surface = qemu_create_displaysurface_from(
width, height,
PIXMAN_x8r8g8b8,
width * 4, bits
);
surface->flags = QEMU_ALLOCATED_FLAG;
#ifdef WIN32
qemu_displaysurface_win32_set_handle(surface, handle, 0);
#endif
return surface;
}
DisplaySurface *qemu_create_displaysurface_from(int width, int height,
pixman_format_code_t format,
int linesize, uint8_t *data)
{
DisplaySurface *surface = g_new0(DisplaySurface, 1);
trace_displaysurface_create_from(surface, width, height, format);
surface->image = pixman_image_create_bits(format,
width, height,
(void *)data, linesize);
assert(surface->image != NULL);
#ifdef WIN32
pixman_image_set_destroy_function(surface->image,
win32_pixman_image_destroy, surface);
#endif
return surface;
}
DisplaySurface *qemu_create_displaysurface_pixman(pixman_image_t *image)
{
DisplaySurface *surface = g_new0(DisplaySurface, 1);
trace_displaysurface_create_pixman(surface);
surface->image = pixman_image_ref(image);
return surface;
}
DisplaySurface *qemu_create_placeholder_surface(int w, int h,
const char *msg)
{
DisplaySurface *surface = qemu_create_displaysurface(w, h);
pixman_color_t bg = QEMU_PIXMAN_COLOR_BLACK;
pixman_color_t fg = QEMU_PIXMAN_COLOR_GRAY;
pixman_image_t *glyph;
int len, x, y, i;
len = strlen(msg);
x = (w / FONT_WIDTH - len) / 2;
y = (h / FONT_HEIGHT - 1) / 2;
for (i = 0; i < len; i++) {
glyph = qemu_pixman_glyph_from_vgafont(FONT_HEIGHT, vgafont16, msg[i]);
qemu_pixman_glyph_render(glyph, surface->image, &fg, &bg,
x+i, y, FONT_WIDTH, FONT_HEIGHT);
qemu_pixman_image_unref(glyph);
}
surface->flags |= QEMU_PLACEHOLDER_FLAG;
return surface;
}
void qemu_free_displaysurface(DisplaySurface *surface)
{
if (surface == NULL) {
return;
}
trace_displaysurface_free(surface);
qemu_pixman_image_unref(surface->image);
g_free(surface);
}
bool console_has_gl(QemuConsole *con)
{
return con->gl != NULL;
}
static bool displaychangelistener_has_dmabuf(DisplayChangeListener *dcl)
{
if (dcl->ops->dpy_has_dmabuf) {
return dcl->ops->dpy_has_dmabuf(dcl);
}
if (dcl->ops->dpy_gl_scanout_dmabuf) {
return true;
}
return false;
}
static bool console_compatible_with(QemuConsole *con,
DisplayChangeListener *dcl, Error **errp)
{
int flags;
flags = con->hw_ops->get_flags ? con->hw_ops->get_flags(con->hw) : 0;
if (console_has_gl(con) &&
!con->gl->ops->dpy_gl_ctx_is_compatible_dcl(con->gl, dcl)) {
error_setg(errp, "Display %s is incompatible with the GL context",
dcl->ops->dpy_name);
return false;
}
if (flags & GRAPHIC_FLAGS_GL &&
!console_has_gl(con)) {
error_setg(errp, "The console requires a GL context.");
return false;
}
if (flags & GRAPHIC_FLAGS_DMABUF &&
!displaychangelistener_has_dmabuf(dcl)) {
error_setg(errp, "The console requires display DMABUF support.");
return false;
}
return true;
}
void console_handle_touch_event(QemuConsole *con,
struct touch_slot touch_slots[INPUT_EVENT_SLOTS_MAX],
uint64_t num_slot,
int width, int height,
double x, double y,
InputMultiTouchType type,
Error **errp)
{
struct touch_slot *slot;
bool needs_sync = false;
int update;
int i;
if (num_slot >= INPUT_EVENT_SLOTS_MAX) {
error_setg(errp,
"Unexpected touch slot number: % " PRId64" >= %d",
num_slot, INPUT_EVENT_SLOTS_MAX);
return;
}
slot = &touch_slots[num_slot];
slot->x = x;
slot->y = y;
if (type == INPUT_MULTI_TOUCH_TYPE_BEGIN) {
slot->tracking_id = num_slot;
}
for (i = 0; i < INPUT_EVENT_SLOTS_MAX; ++i) {
if (i == num_slot) {
update = type;
} else {
update = INPUT_MULTI_TOUCH_TYPE_UPDATE;
}
slot = &touch_slots[i];
if (slot->tracking_id == -1) {
continue;
}
if (update == INPUT_MULTI_TOUCH_TYPE_END) {
slot->tracking_id = -1;
qemu_input_queue_mtt(con, update, i, slot->tracking_id);
needs_sync = true;
} else {
qemu_input_queue_mtt(con, update, i, slot->tracking_id);
qemu_input_queue_btn(con, INPUT_BUTTON_TOUCH, true);
qemu_input_queue_mtt_abs(con,
INPUT_AXIS_X, (int) slot->x,
0, width,
i, slot->tracking_id);
qemu_input_queue_mtt_abs(con,
INPUT_AXIS_Y, (int) slot->y,
0, height,
i, slot->tracking_id);
needs_sync = true;
}
}
if (needs_sync) {
qemu_input_event_sync();
}
}
void qemu_console_set_display_gl_ctx(QemuConsole *con, DisplayGLCtx *gl)
{
/* display has opengl support */
assert(con);
if (con->gl) {
error_report("The console already has an OpenGL context.");
exit(1);
}
con->gl = gl;
}
static void
dcl_set_graphic_cursor(DisplayChangeListener *dcl, QemuGraphicConsole *con)
{
if (con && con->cursor && dcl->ops->dpy_cursor_define) {
dcl->ops->dpy_cursor_define(dcl, con->cursor);
}
if (con && dcl->ops->dpy_mouse_set) {
dcl->ops->dpy_mouse_set(dcl, con->cursor_x, con->cursor_y, con->cursor_on);
}
}
void register_displaychangelistener(DisplayChangeListener *dcl)
{
QemuConsole *con;
assert(!dcl->ds);
trace_displaychangelistener_register(dcl, dcl->ops->dpy_name);
dcl->ds = get_alloc_displaystate();
QLIST_INSERT_HEAD(&dcl->ds->listeners, dcl, next);
gui_setup_refresh(dcl->ds);
if (dcl->con) {
dcl->con->dcls++;
con = dcl->con;
} else {
con = active_console;
}
displaychangelistener_display_console(dcl, con, dcl->con ? &error_fatal : NULL);
if (QEMU_IS_GRAPHIC_CONSOLE(con)) {
dcl_set_graphic_cursor(dcl, QEMU_GRAPHIC_CONSOLE(con));
}
qemu_text_console_update_cursor();
}
void update_displaychangelistener(DisplayChangeListener *dcl,
uint64_t interval)
{
DisplayState *ds = dcl->ds;
dcl->update_interval = interval;
if (!ds->refreshing && ds->update_interval > interval) {
timer_mod(ds->gui_timer, ds->last_update + interval);
}
}
void unregister_displaychangelistener(DisplayChangeListener *dcl)
{
DisplayState *ds = dcl->ds;
trace_displaychangelistener_unregister(dcl, dcl->ops->dpy_name);
if (dcl->con) {
dcl->con->dcls--;
}
QLIST_REMOVE(dcl, next);
dcl->ds = NULL;
gui_setup_refresh(ds);
}
static void dpy_set_ui_info_timer(void *opaque)
{
QemuConsole *con = opaque;
uint32_t head = qemu_console_get_head(con);
con->hw_ops->ui_info(con->hw, head, &con->ui_info);
}
bool dpy_ui_info_supported(const QemuConsole *con)
{
if (con == NULL) {
con = active_console;
}
if (con == NULL) {
return false;
}
return con->hw_ops->ui_info != NULL;
}
const QemuUIInfo *dpy_get_ui_info(const QemuConsole *con)
{
assert(dpy_ui_info_supported(con));
if (con == NULL) {
con = active_console;
}
return &con->ui_info;
}
int dpy_set_ui_info(QemuConsole *con, QemuUIInfo *info, bool delay)
{
if (con == NULL) {
con = active_console;
}
if (!dpy_ui_info_supported(con)) {
return -1;
}
if (memcmp(&con->ui_info, info, sizeof(con->ui_info)) == 0) {
/* nothing changed -- ignore */
return 0;
}
/*
* Typically we get a flood of these as the user resizes the window.
* Wait until the dust has settled (one second without updates), then
* go notify the guest.
*/
con->ui_info = *info;
timer_mod(con->ui_timer,
qemu_clock_get_ms(QEMU_CLOCK_REALTIME) + (delay ? 1000 : 0));
return 0;
}
void dpy_gfx_update(QemuConsole *con, int x, int y, int w, int h)
{
DisplayState *s = con->ds;
DisplayChangeListener *dcl;
int width = qemu_console_get_width(con, x + w);
int height = qemu_console_get_height(con, y + h);
x = MAX(x, 0);
y = MAX(y, 0);
x = MIN(x, width);
y = MIN(y, height);
w = MIN(w, width - x);
h = MIN(h, height - y);
if (!qemu_console_is_visible(con)) {
return;
}
dpy_gfx_update_texture(con, con->surface, x, y, w, h);
QLIST_FOREACH(dcl, &s->listeners, next) {
if (con != (dcl->con ? dcl->con : active_console)) {
continue;
}
if (dcl->ops->dpy_gfx_update) {
dcl->ops->dpy_gfx_update(dcl, x, y, w, h);
}
}
}
void dpy_gfx_update_full(QemuConsole *con)
{
int w = qemu_console_get_width(con, 0);
int h = qemu_console_get_height(con, 0);
dpy_gfx_update(con, 0, 0, w, h);
}
void dpy_gfx_replace_surface(QemuConsole *con,
DisplaySurface *surface)
{
static const char placeholder_msg[] = "Display output is not active.";
DisplayState *s = con->ds;
DisplaySurface *old_surface = con->surface;
DisplaySurface *new_surface = surface;
DisplayChangeListener *dcl;
int width;
int height;
if (!surface) {
if (old_surface) {
width = surface_width(old_surface);
height = surface_height(old_surface);
} else {
width = 640;
height = 480;
}
new_surface = qemu_create_placeholder_surface(width, height, placeholder_msg);
}
assert(old_surface != new_surface);
con->scanout.kind = SCANOUT_SURFACE;
con->surface = new_surface;
dpy_gfx_create_texture(con, new_surface);
QLIST_FOREACH(dcl, &s->listeners, next) {
if (con != (dcl->con ? dcl->con : active_console)) {
continue;
}
displaychangelistener_gfx_switch(dcl, new_surface, surface ? FALSE : TRUE);
}
dpy_gfx_destroy_texture(con, old_surface);
qemu_free_displaysurface(old_surface);
}
bool dpy_gfx_check_format(QemuConsole *con,
pixman_format_code_t format)
{
DisplayChangeListener *dcl;
DisplayState *s = con->ds;
QLIST_FOREACH(dcl, &s->listeners, next) {
if (dcl->con && dcl->con != con) {
/* dcl bound to another console -> skip */
continue;
}
if (dcl->ops->dpy_gfx_check_format) {
if (!dcl->ops->dpy_gfx_check_format(dcl, format)) {
return false;
}
} else {
/* default is to allow native 32 bpp only */
if (format != qemu_default_pixman_format(32, true)) {
return false;
}
}
}
return true;
}
static void dpy_refresh(DisplayState *s)
{
DisplayChangeListener *dcl;
QLIST_FOREACH(dcl, &s->listeners, next) {
if (dcl->ops->dpy_refresh) {
dcl->ops->dpy_refresh(dcl);
}
}
}
void dpy_text_cursor(QemuConsole *con, int x, int y)
{
DisplayState *s = con->ds;
DisplayChangeListener *dcl;
if (!qemu_console_is_visible(con)) {
return;
}
QLIST_FOREACH(dcl, &s->listeners, next) {
if (con != (dcl->con ? dcl->con : active_console)) {
continue;
}
if (dcl->ops->dpy_text_cursor) {
dcl->ops->dpy_text_cursor(dcl, x, y);
}
}
}
void dpy_text_update(QemuConsole *con, int x, int y, int w, int h)
{
DisplayState *s = con->ds;
DisplayChangeListener *dcl;
if (!qemu_console_is_visible(con)) {
return;
}
QLIST_FOREACH(dcl, &s->listeners, next) {
if (con != (dcl->con ? dcl->con : active_console)) {
continue;
}
if (dcl->ops->dpy_text_update) {
dcl->ops->dpy_text_update(dcl, x, y, w, h);
}
}
}
void dpy_text_resize(QemuConsole *con, int w, int h)
{
DisplayState *s = con->ds;
DisplayChangeListener *dcl;
if (!qemu_console_is_visible(con)) {
return;
}
QLIST_FOREACH(dcl, &s->listeners, next) {
if (con != (dcl->con ? dcl->con : active_console)) {
continue;
}
if (dcl->ops->dpy_text_resize) {
dcl->ops->dpy_text_resize(dcl, w, h);
}
}
}
void dpy_mouse_set(QemuConsole *c, int x, int y, int on)
{
QemuGraphicConsole *con = QEMU_GRAPHIC_CONSOLE(c);
DisplayState *s = c->ds;
DisplayChangeListener *dcl;
con->cursor_x = x;
con->cursor_y = y;
con->cursor_on = on;
if (!qemu_console_is_visible(c)) {
return;
}
QLIST_FOREACH(dcl, &s->listeners, next) {
if (c != (dcl->con ? dcl->con : active_console)) {
continue;
}
if (dcl->ops->dpy_mouse_set) {
dcl->ops->dpy_mouse_set(dcl, x, y, on);
}
}
}
void dpy_cursor_define(QemuConsole *c, QEMUCursor *cursor)
{
QemuGraphicConsole *con = QEMU_GRAPHIC_CONSOLE(c);
DisplayState *s = c->ds;
DisplayChangeListener *dcl;
cursor_unref(con->cursor);
con->cursor = cursor_ref(cursor);
if (!qemu_console_is_visible(c)) {
return;
}
QLIST_FOREACH(dcl, &s->listeners, next) {
if (c != (dcl->con ? dcl->con : active_console)) {
continue;
}
if (dcl->ops->dpy_cursor_define) {
dcl->ops->dpy_cursor_define(dcl, cursor);
}
}
}
bool dpy_cursor_define_supported(QemuConsole *con)
{
DisplayState *s = con->ds;
DisplayChangeListener *dcl;
QLIST_FOREACH(dcl, &s->listeners, next) {
if (dcl->ops->dpy_cursor_define) {
return true;
}
}
return false;
}
QEMUGLContext dpy_gl_ctx_create(QemuConsole *con,
struct QEMUGLParams *qparams)
{
assert(con->gl);
return con->gl->ops->dpy_gl_ctx_create(con->gl, qparams);
}
void dpy_gl_ctx_destroy(QemuConsole *con, QEMUGLContext ctx)
{
assert(con->gl);
con->gl->ops->dpy_gl_ctx_destroy(con->gl, ctx);
}
int dpy_gl_ctx_make_current(QemuConsole *con, QEMUGLContext ctx)
{
assert(con->gl);
return con->gl->ops->dpy_gl_ctx_make_current(con->gl, ctx);
}
void dpy_gl_scanout_disable(QemuConsole *con)
{
DisplayState *s = con->ds;
DisplayChangeListener *dcl;
if (con->scanout.kind != SCANOUT_SURFACE) {
con->scanout.kind = SCANOUT_NONE;
}
QLIST_FOREACH(dcl, &s->listeners, next) {
if (con != (dcl->con ? dcl->con : active_console)) {
continue;
}
if (dcl->ops->dpy_gl_scanout_disable) {
dcl->ops->dpy_gl_scanout_disable(dcl);
}
}
}
void dpy_gl_scanout_texture(QemuConsole *con,
uint32_t backing_id,
bool backing_y_0_top,
uint32_t backing_width,
uint32_t backing_height,
uint32_t x, uint32_t y,
uint32_t width, uint32_t height,
void *d3d_tex2d)
{
DisplayState *s = con->ds;
DisplayChangeListener *dcl;
con->scanout.kind = SCANOUT_TEXTURE;
con->scanout.texture = (ScanoutTexture) {
backing_id, backing_y_0_top, backing_width, backing_height,
x, y, width, height, d3d_tex2d,
};
QLIST_FOREACH(dcl, &s->listeners, next) {
if (con != (dcl->con ? dcl->con : active_console)) {
continue;
}
if (dcl->ops->dpy_gl_scanout_texture) {
dcl->ops->dpy_gl_scanout_texture(dcl, backing_id,
backing_y_0_top,
backing_width, backing_height,
x, y, width, height,
d3d_tex2d);
}
}
}
void dpy_gl_scanout_dmabuf(QemuConsole *con,
QemuDmaBuf *dmabuf)
{
DisplayState *s = con->ds;
DisplayChangeListener *dcl;
con->scanout.kind = SCANOUT_DMABUF;
con->scanout.dmabuf = dmabuf;
QLIST_FOREACH(dcl, &s->listeners, next) {
if (con != (dcl->con ? dcl->con : active_console)) {
continue;
}
if (dcl->ops->dpy_gl_scanout_dmabuf) {
dcl->ops->dpy_gl_scanout_dmabuf(dcl, dmabuf);
}
}
}
void dpy_gl_cursor_dmabuf(QemuConsole *con, QemuDmaBuf *dmabuf,
bool have_hot, uint32_t hot_x, uint32_t hot_y)
{
DisplayState *s = con->ds;
DisplayChangeListener *dcl;
QLIST_FOREACH(dcl, &s->listeners, next) {
if (con != (dcl->con ? dcl->con : active_console)) {
continue;
}
if (dcl->ops->dpy_gl_cursor_dmabuf) {
dcl->ops->dpy_gl_cursor_dmabuf(dcl, dmabuf,
have_hot, hot_x, hot_y);
}
}
}
void dpy_gl_cursor_position(QemuConsole *con,
uint32_t pos_x, uint32_t pos_y)
{
DisplayState *s = con->ds;
DisplayChangeListener *dcl;
QLIST_FOREACH(dcl, &s->listeners, next) {
if (con != (dcl->con ? dcl->con : active_console)) {
continue;
}
if (dcl->ops->dpy_gl_cursor_position) {
dcl->ops->dpy_gl_cursor_position(dcl, pos_x, pos_y);
}
}
}
void dpy_gl_release_dmabuf(QemuConsole *con,
QemuDmaBuf *dmabuf)
{
DisplayState *s = con->ds;
DisplayChangeListener *dcl;
QLIST_FOREACH(dcl, &s->listeners, next) {
if (con != (dcl->con ? dcl->con : active_console)) {
continue;
}
if (dcl->ops->dpy_gl_release_dmabuf) {
dcl->ops->dpy_gl_release_dmabuf(dcl, dmabuf);
}
}
}
void dpy_gl_update(QemuConsole *con,
uint32_t x, uint32_t y, uint32_t w, uint32_t h)
{
DisplayState *s = con->ds;
DisplayChangeListener *dcl;
assert(con->gl);
graphic_hw_gl_block(con, true);
QLIST_FOREACH(dcl, &s->listeners, next) {
if (con != (dcl->con ? dcl->con : active_console)) {
continue;
}
if (dcl->ops->dpy_gl_update) {
dcl->ops->dpy_gl_update(dcl, x, y, w, h);
}
}
graphic_hw_gl_block(con, false);
}
/***********************************************************/
/* register display */
/* console.c internal use only */
static DisplayState *get_alloc_displaystate(void)
{
if (!display_state) {
display_state = g_new0(DisplayState, 1);
}
return display_state;
}
/*
* Called by main(), after creating QemuConsoles
* and before initializing ui (sdl/vnc/...).
*/
DisplayState *init_displaystate(void)
{
gchar *name;
QemuConsole *con;
QTAILQ_FOREACH(con, &consoles, next) {
/* Hook up into the qom tree here (not in object_new()), once
* all QemuConsoles are created and the order / numbering
* doesn't change any more */
name = g_strdup_printf("console[%d]", con->index);
object_property_add_child(container_get(object_get_root(), "/backend"),
name, OBJECT(con));
g_free(name);
}
return display_state;
}
void graphic_console_set_hwops(QemuConsole *con,
const GraphicHwOps *hw_ops,
void *opaque)
{
con->hw_ops = hw_ops;
con->hw = opaque;
}
QemuConsole *graphic_console_init(DeviceState *dev, uint32_t head,
const GraphicHwOps *hw_ops,
void *opaque)
{
static const char noinit[] =
"Guest has not initialized the display (yet).";
int width = 640;
int height = 480;
QemuConsole *s;
DisplaySurface *surface;
s = qemu_graphic_console_lookup_unused();
if (s) {
trace_console_gfx_reuse(s->index);
width = qemu_console_get_width(s, 0);
height = qemu_console_get_height(s, 0);
} else {
trace_console_gfx_new();
s = (QemuConsole *)object_new(TYPE_QEMU_GRAPHIC_CONSOLE);
}
QEMU_GRAPHIC_CONSOLE(s)->head = head;
graphic_console_set_hwops(s, hw_ops, opaque);
if (dev) {
object_property_set_link(OBJECT(s), "device", OBJECT(dev),
&error_abort);
}
surface = qemu_create_placeholder_surface(width, height, noinit);
dpy_gfx_replace_surface(s, surface);
s->gl_unblock_timer = timer_new_ms(QEMU_CLOCK_REALTIME,
graphic_hw_gl_unblock_timer, s);
return s;
}
static const GraphicHwOps unused_ops = {
/* no callbacks */
};
void graphic_console_close(QemuConsole *con)
{
static const char unplugged[] =
"Guest display has been unplugged";
DisplaySurface *surface;
int width = qemu_console_get_width(con, 640);
int height = qemu_console_get_height(con, 480);
trace_console_gfx_close(con->index);
object_property_set_link(OBJECT(con), "device", NULL, &error_abort);
graphic_console_set_hwops(con, &unused_ops, NULL);
if (con->gl) {
dpy_gl_scanout_disable(con);
}
surface = qemu_create_placeholder_surface(width, height, unplugged);
dpy_gfx_replace_surface(con, surface);
}
QemuConsole *qemu_console_lookup_by_index(unsigned int index)
{
QemuConsole *con;
QTAILQ_FOREACH(con, &consoles, next) {
if (con->index == index) {
return con;
}
}
return NULL;
}
QemuConsole *qemu_console_lookup_by_device(DeviceState *dev, uint32_t head)
{
QemuConsole *con;
Object *obj;
uint32_t h;
QTAILQ_FOREACH(con, &consoles, next) {
obj = object_property_get_link(OBJECT(con),
"device", &error_abort);
if (DEVICE(obj) != dev) {
continue;
}
h = object_property_get_uint(OBJECT(con),
"head", &error_abort);
if (h != head) {
continue;
}
return con;
}
return NULL;
}
QemuConsole *qemu_console_lookup_by_device_name(const char *device_id,
uint32_t head, Error **errp)
{
DeviceState *dev;
QemuConsole *con;
dev = qdev_find_recursive(sysbus_get_default(), device_id);
if (dev == NULL) {
error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
"Device '%s' not found", device_id);
return NULL;
}
con = qemu_console_lookup_by_device(dev, head);
if (con == NULL) {
error_setg(errp, "Device %s (head %d) is not bound to a QemuConsole",
device_id, head);
return NULL;
}
return con;
}
static QemuConsole *qemu_graphic_console_lookup_unused(void)
{
QemuConsole *con;
Object *obj;
QTAILQ_FOREACH(con, &consoles, next) {
if (!QEMU_IS_GRAPHIC_CONSOLE(con) || con->hw_ops != &unused_ops) {
continue;
}
obj = object_property_get_link(OBJECT(con),
"device", &error_abort);
if (obj != NULL) {
continue;
}
return con;
}
return NULL;
}
QEMUCursor *qemu_console_get_cursor(QemuConsole *con)
{
if (con == NULL) {
con = active_console;
}
return QEMU_IS_GRAPHIC_CONSOLE(con) ? QEMU_GRAPHIC_CONSOLE(con)->cursor : NULL;
}
bool qemu_console_is_visible(QemuConsole *con)
{
return (con == active_console) || (con->dcls > 0);
}
bool qemu_console_is_graphic(QemuConsole *con)
{
if (con == NULL) {
con = active_console;
}
return con && QEMU_IS_GRAPHIC_CONSOLE(con);
}
bool qemu_console_is_fixedsize(QemuConsole *con)
{
if (con == NULL) {
con = active_console;
}
return con && (QEMU_IS_GRAPHIC_CONSOLE(con) || QEMU_IS_FIXED_TEXT_CONSOLE(con));
}
bool qemu_console_is_gl_blocked(QemuConsole *con)
{
assert(con != NULL);
return con->gl_block;
}
static bool qemu_graphic_console_is_multihead(QemuGraphicConsole *c)
{
QemuConsole *con;
QTAILQ_FOREACH(con, &consoles, next) {
QemuGraphicConsole *candidate;
if (!QEMU_IS_GRAPHIC_CONSOLE(con)) {
continue;
}
candidate = QEMU_GRAPHIC_CONSOLE(con);
if (candidate->device != c->device) {
continue;
}
if (candidate->head != c->head) {
return true;
}
}
return false;
}
char *qemu_console_get_label(QemuConsole *con)
{
if (QEMU_IS_GRAPHIC_CONSOLE(con)) {
QemuGraphicConsole *c = QEMU_GRAPHIC_CONSOLE(con);
if (c->device) {
DeviceState *dev;
bool multihead;
dev = DEVICE(c->device);
multihead = qemu_graphic_console_is_multihead(c);
if (multihead) {
return g_strdup_printf("%s.%d", dev->id ?
dev->id :
object_get_typename(c->device),
c->head);
} else {
return g_strdup_printf("%s", dev->id ?
dev->id :
object_get_typename(c->device));
}
}
return g_strdup("VGA");
} else if (QEMU_IS_TEXT_CONSOLE(con)) {
const char *label = qemu_text_console_get_label(QEMU_TEXT_CONSOLE(con));
if (label) {
return g_strdup(label);
}
}
return g_strdup_printf("vc%d", con->index);
}
int qemu_console_get_index(QemuConsole *con)
{
if (con == NULL) {
con = active_console;
}
return con ? con->index : -1;
}
uint32_t qemu_console_get_head(QemuConsole *con)
{
if (con == NULL) {
con = active_console;
}
if (con == NULL) {
return -1;
}
if (QEMU_IS_GRAPHIC_CONSOLE(con)) {
return QEMU_GRAPHIC_CONSOLE(con)->head;
}
return 0;
}
int qemu_console_get_width(QemuConsole *con, int fallback)
{
if (con == NULL) {
con = active_console;
}
if (con == NULL) {
return fallback;
}
switch (con->scanout.kind) {
case SCANOUT_DMABUF:
return con->scanout.dmabuf->width;
case SCANOUT_TEXTURE:
return con->scanout.texture.width;
case SCANOUT_SURFACE:
return surface_width(con->surface);
default:
return fallback;
}
}
int qemu_console_get_height(QemuConsole *con, int fallback)
{
if (con == NULL) {
con = active_console;
}
if (con == NULL) {
return fallback;
}
switch (con->scanout.kind) {
case SCANOUT_DMABUF:
return con->scanout.dmabuf->height;
case SCANOUT_TEXTURE:
return con->scanout.texture.height;
case SCANOUT_SURFACE:
return surface_height(con->surface);
default:
return fallback;
}
}
int qemu_invalidate_text_consoles(void)
{
QemuConsole *s;
int count = 0;
QTAILQ_FOREACH(s, &consoles, next) {
if (qemu_console_is_graphic(s) ||
!qemu_console_is_visible(s)) {
continue;
}
count++;
graphic_hw_invalidate(s);
}
return count;
}
void qemu_console_resize(QemuConsole *s, int width, int height)
{
DisplaySurface *surface = qemu_console_surface(s);
assert(QEMU_IS_GRAPHIC_CONSOLE(s));
if ((s->scanout.kind != SCANOUT_SURFACE ||
(surface && surface->flags & QEMU_ALLOCATED_FLAG)) &&
qemu_console_get_width(s, -1) == width &&
qemu_console_get_height(s, -1) == height) {
return;
}
surface = qemu_create_displaysurface(width, height);
dpy_gfx_replace_surface(s, surface);
}
DisplaySurface *qemu_console_surface(QemuConsole *console)
{
switch (console->scanout.kind) {
case SCANOUT_SURFACE:
return console->surface;
default:
return NULL;
}
}
PixelFormat qemu_default_pixelformat(int bpp)
{
pixman_format_code_t fmt = qemu_default_pixman_format(bpp, true);
PixelFormat pf = qemu_pixelformat_from_pixman(fmt);
return pf;
}
static QemuDisplay *dpys[DISPLAY_TYPE__MAX];
void qemu_display_register(QemuDisplay *ui)
{
assert(ui->type < DISPLAY_TYPE__MAX);
dpys[ui->type] = ui;
}
bool qemu_display_find_default(DisplayOptions *opts)
{
static DisplayType prio[] = {
#if defined(CONFIG_GTK)
DISPLAY_TYPE_GTK,
#endif
#if defined(CONFIG_SDL)
DISPLAY_TYPE_SDL,
#endif
#if defined(CONFIG_COCOA)
DISPLAY_TYPE_COCOA
#endif
};
int i;
for (i = 0; i < (int)ARRAY_SIZE(prio); i++) {
if (dpys[prio[i]] == NULL) {
Error *local_err = NULL;
int rv = ui_module_load(DisplayType_str(prio[i]), &local_err);
if (rv < 0) {
error_report_err(local_err);
}
}
if (dpys[prio[i]] == NULL) {
continue;
}
opts->type = prio[i];
return true;
}
return false;
}
void qemu_display_early_init(DisplayOptions *opts)
{
assert(opts->type < DISPLAY_TYPE__MAX);
if (opts->type == DISPLAY_TYPE_NONE) {
return;
}
if (dpys[opts->type] == NULL) {
Error *local_err = NULL;
int rv = ui_module_load(DisplayType_str(opts->type), &local_err);
if (rv < 0) {
error_report_err(local_err);
}
}
if (dpys[opts->type] == NULL) {
error_report("Display '%s' is not available.",
DisplayType_str(opts->type));
exit(1);
}
if (dpys[opts->type]->early_init) {
dpys[opts->type]->early_init(opts);
}
}
void qemu_display_init(DisplayState *ds, DisplayOptions *opts)
{
assert(opts->type < DISPLAY_TYPE__MAX);
if (opts->type == DISPLAY_TYPE_NONE) {
return;
}
assert(dpys[opts->type] != NULL);
dpys[opts->type]->init(ds, opts);
}
void qemu_display_help(void)
{
int idx;
printf("Available display backend types:\n");
printf("none\n");
for (idx = DISPLAY_TYPE_NONE; idx < DISPLAY_TYPE__MAX; idx++) {
if (!dpys[idx]) {
Error *local_err = NULL;
int rv = ui_module_load(DisplayType_str(idx), &local_err);
if (rv < 0) {
error_report_err(local_err);
}
}
if (dpys[idx]) {
printf("%s\n", DisplayType_str(dpys[idx]->type));
}
}
}
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