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FRET-qemu/ui/console.c
Peter Maydell ef0a1212c9 ui/console: Note in '-display help' that some backends support suboptions 
Currently '-display help' only prints the available backends. Some
of those backends support suboptions (e.g. '-display gtk,gl=on').
Mention that in the help output, and point the user to where they
might be able to find more information about the suboptions.
The new output looks like this:

  $ qemu-system-aarch64 -display help
  Available display backend types:
  none
  gtk
  sdl
  egl-headless
  curses
  spice-app
  dbus

  Some display backends support suboptions, which can be set with
     -display backend,option=value,option=value...
  For a short list of the suboptions for each display, see the top-level -help output; more detail is in the documentation.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Acked-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-ID: <20240731154136.3494621-4-peter.maydell@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
2024-08-06 16:24:14 +02:00

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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;
bool 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 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;
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->hw_ops->invalidate) {
con->hw_ops->invalidate(con->hw);
}
}
void graphic_hw_text_update(QemuConsole *con, console_ch_t *chardata)
{
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,
Error **errp)
{
static const char nodev[] =
"This VM has no graphic display device.";
static DisplaySurface *dummy;
QemuConsole *con = dcl->con;
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 qemu_text_console_put_keysym(QemuTextConsole *s, int keysym)
{
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 (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);
#ifdef CONFIG_PIXMAN
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);
}
#endif
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)
{
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++;
}
displaychangelistener_display_console(dcl, &error_fatal);
if (QEMU_IS_GRAPHIC_CONSOLE(dcl->con)) {
dcl_set_graphic_cursor(dcl, QEMU_GRAPHIC_CONSOLE(dcl->con));
} else if (QEMU_IS_TEXT_CONSOLE(dcl->con)) {
qemu_text_console_update_size(QEMU_TEXT_CONSOLE(dcl->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) {
return false;
}
return con->hw_ops->ui_info != NULL;
}
const QemuUIInfo *dpy_get_ui_info(const QemuConsole *con)
{
assert(dpy_ui_info_supported(con));
return &con->ui_info;
}
int dpy_set_ui_info(QemuConsole *con, QemuUIInfo *info, bool delay)
{
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) {
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) {
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) {
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) {
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) {
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, bool 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) {
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) {
continue;
}
if (dcl->ops->dpy_cursor_define) {
dcl->ops->dpy_cursor_define(dcl, cursor);
}
}
}
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) {
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) {
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) {
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) {
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) {
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) {
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) {
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_default(void)
{
QemuConsole *con;
QTAILQ_FOREACH(con, &consoles, next) {
if (QEMU_IS_GRAPHIC_CONSOLE(con)) {
return con;
}
}
return QTAILQ_FIRST(&consoles);
}
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)
{
return QEMU_IS_GRAPHIC_CONSOLE(con) ? QEMU_GRAPHIC_CONSOLE(con)->cursor : NULL;
}
bool qemu_console_is_visible(QemuConsole *con)
{
return con->dcls > 0;
}
bool qemu_console_is_graphic(QemuConsole *con)
{
return con && QEMU_IS_GRAPHIC_CONSOLE(con);
}
bool qemu_console_is_fixedsize(QemuConsole *con)
{
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)
{
return con ? con->index : -1;
}
uint32_t qemu_console_get_head(QemuConsole *con)
{
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) {
return fallback;
}
switch (con->scanout.kind) {
case SCANOUT_DMABUF:
return qemu_dmabuf_get_width(con->scanout.dmabuf);
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) {
return fallback;
}
switch (con->scanout.kind) {
case SCANOUT_DMABUF:
return qemu_dmabuf_get_height(con->scanout.dmabuf);
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_is_allocated(surface) &&
!surface_is_placeholder(surface))) &&
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);
}
const char *qemu_display_get_vc(DisplayOptions *opts)
{
#ifdef CONFIG_PIXMAN
const char *vc = "vc:80Cx24C";
#else
const char *vc = NULL;
#endif
assert(opts->type < DISPLAY_TYPE__MAX);
if (dpys[opts->type] && dpys[opts->type]->vc) {
vc = dpys[opts->type]->vc;
}
return vc;
}
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));
}
}
printf("\n"
"Some display backends support suboptions, which can be set with\n"
" -display backend,option=value,option=value...\n"
"For a short list of the suboptions for each display, see the "
"top-level -help output; more detail is in the documentation.\n");
}
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