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weston/src/compositor.c

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/*
* Copyright © 2010-2011 Intel Corporation
* Copyright © 2008-2011 Kristian Høgsberg
* Copyright © 2012 Collabora, Ltd.
*
* Permission to use, copy, modify, distribute, and sell this software and
* its documentation for any purpose is hereby granted without fee, provided
* that the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name of the copyright holders not be used in
* advertising or publicity pertaining to distribution of the software
* without specific, written prior permission. The copyright holders make
* no representations about the suitability of this software for any
* purpose. It is provided "as is" without express or implied warranty.
*
* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
* SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
* RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
* CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include "config.h"
#include <fcntl.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <stdint.h>
#include <limits.h>
#include <stdarg.h>
#include <assert.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
#include <sys/wait.h>
#include <sys/socket.h>
#include <sys/utsname.h>
#include <sys/stat.h>
#include <unistd.h>
#include <math.h>
#include <linux/input.h>
#include <dlfcn.h>
#include <signal.h>
#include <setjmp.h>
#include <sys/time.h>
#include <time.h>
#ifdef HAVE_LIBUNWIND
#define UNW_LOCAL_ONLY
#include <libunwind.h>
#endif
#include <wayland-server.h>
#include "compositor.h"
#include "subsurface-server-protocol.h"
#include "../shared/os-compatibility.h"
#include "git-version.h"
#include "version.h"
static struct wl_list child_process_list;
static struct weston_compositor *segv_compositor;
static int
sigchld_handler(int signal_number, void *data)
{
struct weston_process *p;
int status;
pid_t pid;
pid = waitpid(-1, &status, WNOHANG);
if (!pid)
return 1;
wl_list_for_each(p, &child_process_list, link) {
if (p->pid == pid)
break;
}
if (&p->link == &child_process_list) {
weston_log("unknown child process exited\n");
return 1;
}
wl_list_remove(&p->link);
p->cleanup(p, status);
return 1;
}
static void
weston_output_transform_scale_init(struct weston_output *output,
uint32_t transform, uint32_t scale);
WL_EXPORT int
weston_output_switch_mode(struct weston_output *output, struct weston_mode *mode, int32_t scale)
{
struct weston_seat *seat;
pixman_region32_t old_output_region;
int ret;
if (!output->switch_mode)
return -1;
ret = output->switch_mode(output, mode);
if (ret < 0)
return ret;
output->scale = scale;
pixman_region32_init(&old_output_region);
pixman_region32_copy(&old_output_region, &output->region);
/* Update output region and transformation matrix */
weston_output_transform_scale_init(output, output->transform, output->scale);
pixman_region32_init(&output->previous_damage);
pixman_region32_init_rect(&output->region, output->x, output->y,
output->width, output->height);
weston_output_update_matrix(output);
/* If a pointer falls outside the outputs new geometry, move it to its
* lower-right corner */
wl_list_for_each(seat, &output->compositor->seat_list, link) {
struct weston_pointer *pointer = seat->pointer;
int32_t x, y;
if (!pointer)
continue;
x = wl_fixed_to_int(pointer->x);
y = wl_fixed_to_int(pointer->y);
if (!pixman_region32_contains_point(&old_output_region,
x, y, NULL) ||
pixman_region32_contains_point(&output->region,
x, y, NULL))
continue;
if (x >= output->x + output->width)
x = output->x + output->width - 1;
if (y >= output->y + output->height)
y = output->y + output->height - 1;
pointer->x = wl_fixed_from_int(x);
pointer->y = wl_fixed_from_int(y);
}
pixman_region32_fini(&old_output_region);
return ret;
}
WL_EXPORT void
weston_watch_process(struct weston_process *process)
{
wl_list_insert(&child_process_list, &process->link);
}
static void
child_client_exec(int sockfd, const char *path)
{
int clientfd;
char s[32];
sigset_t allsigs;
/* do not give our signal mask to the new process */
sigfillset(&allsigs);
sigprocmask(SIG_UNBLOCK, &allsigs, NULL);
/* Launch clients as the user. */
seteuid(getuid());
/* SOCK_CLOEXEC closes both ends, so we dup the fd to get a
* non-CLOEXEC fd to pass through exec. */
clientfd = dup(sockfd);
if (clientfd == -1) {
weston_log("compositor: dup failed: %m\n");
return;
}
snprintf(s, sizeof s, "%d", clientfd);
setenv("WAYLAND_SOCKET", s, 1);
if (execl(path, path, NULL) < 0)
weston_log("compositor: executing '%s' failed: %m\n",
path);
}
WL_EXPORT struct wl_client *
weston_client_launch(struct weston_compositor *compositor,
struct weston_process *proc,
const char *path,
weston_process_cleanup_func_t cleanup)
{
int sv[2];
pid_t pid;
struct wl_client *client;
weston_log("launching '%s'\n", path);
if (os_socketpair_cloexec(AF_UNIX, SOCK_STREAM, 0, sv) < 0) {
weston_log("weston_client_launch: "
"socketpair failed while launching '%s': %m\n",
path);
return NULL;
}
pid = fork();
if (pid == -1) {
close(sv[0]);
close(sv[1]);
weston_log("weston_client_launch: "
"fork failed while launching '%s': %m\n", path);
return NULL;
}
if (pid == 0) {
child_client_exec(sv[1], path);
_exit(-1);
}
close(sv[1]);
client = wl_client_create(compositor->wl_display, sv[0]);
if (!client) {
close(sv[0]);
weston_log("weston_client_launch: "
"wl_client_create failed while launching '%s'.\n",
path);
return NULL;
}
proc->pid = pid;
proc->cleanup = cleanup;
weston_watch_process(proc);
return client;
}
static void
surface_handle_pending_buffer_destroy(struct wl_listener *listener, void *data)
{
struct weston_surface *surface =
container_of(listener, struct weston_surface,
pending.buffer_destroy_listener);
surface->pending.buffer = NULL;
}
static void
empty_region(pixman_region32_t *region)
{
pixman_region32_fini(region);
pixman_region32_init(region);
}
static void
region_init_infinite(pixman_region32_t *region)
{
pixman_region32_init_rect(region, INT32_MIN, INT32_MIN,
UINT32_MAX, UINT32_MAX);
}
static struct weston_subsurface *
weston_surface_to_subsurface(struct weston_surface *surface);
WL_EXPORT struct weston_surface *
weston_surface_create(struct weston_compositor *compositor)
{
struct weston_surface *surface;
surface = calloc(1, sizeof *surface);
if (surface == NULL)
return NULL;
wl_signal_init(&surface->destroy_signal);
surface->resource = NULL;
wl_list_init(&surface->link);
wl_list_init(&surface->layer_link);
surface->compositor = compositor;
surface->alpha = 1.0;
if (compositor->renderer->create_surface(surface) < 0) {
free(surface);
return NULL;
}
surface->buffer_transform = WL_OUTPUT_TRANSFORM_NORMAL;
surface->buffer_scale = 1;
surface->pending.buffer_transform = surface->buffer_transform;
surface->pending.buffer_scale = surface->buffer_scale;
surface->output = NULL;
surface->plane = &compositor->primary_plane;
surface->pending.newly_attached = 0;
pixman_region32_init(&surface->damage);
pixman_region32_init(&surface->opaque);
pixman_region32_init(&surface->clip);
region_init_infinite(&surface->input);
pixman_region32_init(&surface->transform.opaque);
wl_list_init(&surface->frame_callback_list);
wl_list_init(&surface->geometry.transformation_list);
wl_list_insert(&surface->geometry.transformation_list,
&surface->transform.position.link);
weston_matrix_init(&surface->transform.position.matrix);
wl_list_init(&surface->geometry.child_list);
pixman_region32_init(&surface->transform.boundingbox);
surface->transform.dirty = 1;
surface->pending.buffer_destroy_listener.notify =
surface_handle_pending_buffer_destroy;
pixman_region32_init(&surface->pending.damage);
pixman_region32_init(&surface->pending.opaque);
region_init_infinite(&surface->pending.input);
wl_list_init(&surface->pending.frame_callback_list);
wl_list_init(&surface->subsurface_list);
wl_list_init(&surface->subsurface_list_pending);
return surface;
}
WL_EXPORT void
weston_surface_set_color(struct weston_surface *surface,
float red, float green, float blue, float alpha)
{
surface->compositor->renderer->surface_set_color(surface, red, green, blue, alpha);
}
WL_EXPORT void
weston_surface_to_global_float(struct weston_surface *surface,
float sx, float sy, float *x, float *y)
{
if (surface->transform.enabled) {
struct weston_vector v = { { sx, sy, 0.0f, 1.0f } };
weston_matrix_transform(&surface->transform.matrix, &v);
if (fabsf(v.f[3]) < 1e-6) {
weston_log("warning: numerical instability in "
"%s(), divisor = %g\n", __func__,
v.f[3]);
*x = 0;
*y = 0;
return;
}
*x = v.f[0] / v.f[3];
*y = v.f[1] / v.f[3];
} else {
*x = sx + surface->geometry.x;
*y = sy + surface->geometry.y;
}
}
WL_EXPORT void
weston_transformed_coord(int width, int height,
enum wl_output_transform transform,
int32_t scale,
float sx, float sy, float *bx, float *by)
{
switch (transform) {
case WL_OUTPUT_TRANSFORM_NORMAL:
default:
*bx = sx;
*by = sy;
break;
case WL_OUTPUT_TRANSFORM_FLIPPED:
*bx = width - sx;
*by = sy;
break;
case WL_OUTPUT_TRANSFORM_90:
*bx = height - sy;
*by = sx;
break;
case WL_OUTPUT_TRANSFORM_FLIPPED_90:
*bx = height - sy;
*by = width - sx;
break;
case WL_OUTPUT_TRANSFORM_180:
*bx = width - sx;
*by = height - sy;
break;
case WL_OUTPUT_TRANSFORM_FLIPPED_180:
*bx = sx;
*by = height - sy;
break;
case WL_OUTPUT_TRANSFORM_270:
*bx = sy;
*by = width - sx;
break;
case WL_OUTPUT_TRANSFORM_FLIPPED_270:
*bx = sy;
*by = sx;
break;
}
*bx *= scale;
*by *= scale;
}
WL_EXPORT pixman_box32_t
weston_transformed_rect(int width, int height,
enum wl_output_transform transform,
int32_t scale,
pixman_box32_t rect)
{
float x1, x2, y1, y2;
pixman_box32_t ret;
weston_transformed_coord(width, height, transform, scale,
rect.x1, rect.y1, &x1, &y1);
weston_transformed_coord(width, height, transform, scale,
rect.x2, rect.y2, &x2, &y2);
if (x1 <= x2) {
ret.x1 = x1;
ret.x2 = x2;
} else {
ret.x1 = x2;
ret.x2 = x1;
}
if (y1 <= y2) {
ret.y1 = y1;
ret.y2 = y2;
} else {
ret.y1 = y2;
ret.y2 = y1;
}
return ret;
}
WL_EXPORT void
weston_surface_to_buffer_float(struct weston_surface *surface,
float sx, float sy, float *bx, float *by)
{
weston_transformed_coord(surface->geometry.width,
surface->geometry.height,
surface->buffer_transform,
surface->buffer_scale,
sx, sy, bx, by);
}
WL_EXPORT void
weston_surface_to_buffer(struct weston_surface *surface,
int sx, int sy, int *bx, int *by)
{
float bxf, byf;
weston_transformed_coord(surface->geometry.width,
surface->geometry.height,
surface->buffer_transform,
surface->buffer_scale,
sx, sy, &bxf, &byf);
*bx = floorf(bxf);
*by = floorf(byf);
}
WL_EXPORT pixman_box32_t
weston_surface_to_buffer_rect(struct weston_surface *surface,
pixman_box32_t rect)
{
return weston_transformed_rect(surface->geometry.width,
surface->geometry.height,
surface->buffer_transform,
surface->buffer_scale,
rect);
}
WL_EXPORT void
weston_surface_move_to_plane(struct weston_surface *surface,
struct weston_plane *plane)
{
if (surface->plane == plane)
return;
weston_surface_damage_below(surface);
surface->plane = plane;
weston_surface_damage(surface);
}
WL_EXPORT void
weston_surface_damage_below(struct weston_surface *surface)
{
pixman_region32_t damage;
pixman_region32_init(&damage);
pixman_region32_subtract(&damage, &surface->transform.boundingbox,
&surface->clip);
pixman_region32_union(&surface->plane->damage,
&surface->plane->damage, &damage);
pixman_region32_fini(&damage);
}
static void
weston_surface_update_output_mask(struct weston_surface *es, uint32_t mask)
{
uint32_t different = es->output_mask ^ mask;
uint32_t entered = mask & different;
uint32_t left = es->output_mask & different;
struct weston_output *output;
struct wl_resource *resource = NULL;
struct wl_client *client;
es->output_mask = mask;
if (es->resource == NULL)
return;
if (different == 0)
return;
client = wl_resource_get_client(es->resource);
wl_list_for_each(output, &es->compositor->output_list, link) {
if (1 << output->id & different)
resource =
wl_resource_find_for_client(&output->resource_list,
client);
if (resource == NULL)
continue;
if (1 << output->id & entered)
wl_surface_send_enter(es->resource, resource);
if (1 << output->id & left)
wl_surface_send_leave(es->resource, resource);
}
}
static void
weston_surface_assign_output(struct weston_surface *es)
{
struct weston_compositor *ec = es->compositor;
struct weston_output *output, *new_output;
pixman_region32_t region;
uint32_t max, area, mask;
pixman_box32_t *e;
new_output = NULL;
max = 0;
mask = 0;
pixman_region32_init(&region);
wl_list_for_each(output, &ec->output_list, link) {
pixman_region32_intersect(&region, &es->transform.boundingbox,
&output->region);
e = pixman_region32_extents(&region);
area = (e->x2 - e->x1) * (e->y2 - e->y1);
if (area > 0)
mask |= 1 << output->id;
if (area >= max) {
new_output = output;
max = area;
}
}
pixman_region32_fini(&region);
es->output = new_output;
weston_surface_update_output_mask(es, mask);
}
static void
surface_compute_bbox(struct weston_surface *surface, int32_t sx, int32_t sy,
int32_t width, int32_t height,
pixman_region32_t *bbox)
{
float min_x = HUGE_VALF, min_y = HUGE_VALF;
float max_x = -HUGE_VALF, max_y = -HUGE_VALF;
int32_t s[4][2] = {
{ sx, sy },
{ sx, sy + height },
{ sx + width, sy },
{ sx + width, sy + height }
};
float int_x, int_y;
int i;
if (width == 0 || height == 0) {
/* avoid rounding empty bbox to 1x1 */
pixman_region32_init(bbox);
return;
}
for (i = 0; i < 4; ++i) {
float x, y;
weston_surface_to_global_float(surface,
s[i][0], s[i][1], &x, &y);
if (x < min_x)
min_x = x;
if (x > max_x)
max_x = x;
if (y < min_y)
min_y = y;
if (y > max_y)
max_y = y;
}
int_x = floorf(min_x);
int_y = floorf(min_y);
pixman_region32_init_rect(bbox, int_x, int_y,
ceilf(max_x) - int_x, ceilf(max_y) - int_y);
}
static void
weston_surface_update_transform_disable(struct weston_surface *surface)
{
surface->transform.enabled = 0;
/* round off fractions when not transformed */
surface->geometry.x = roundf(surface->geometry.x);
surface->geometry.y = roundf(surface->geometry.y);
/* Otherwise identity matrix, but with x and y translation. */
surface->transform.position.matrix.type = WESTON_MATRIX_TRANSFORM_TRANSLATE;
surface->transform.position.matrix.d[12] = surface->geometry.x;
surface->transform.position.matrix.d[13] = surface->geometry.y;
surface->transform.matrix = surface->transform.position.matrix;
surface->transform.inverse = surface->transform.position.matrix;
surface->transform.inverse.d[12] = -surface->geometry.x;
surface->transform.inverse.d[13] = -surface->geometry.y;
pixman_region32_init_rect(&surface->transform.boundingbox,
surface->geometry.x,
surface->geometry.y,
surface->geometry.width,
surface->geometry.height);
if (surface->alpha == 1.0) {
pixman_region32_copy(&surface->transform.opaque,
&surface->opaque);
pixman_region32_translate(&surface->transform.opaque,
surface->geometry.x,
surface->geometry.y);
}
}
static int
weston_surface_update_transform_enable(struct weston_surface *surface)
{
struct weston_surface *parent = surface->geometry.parent;
struct weston_matrix *matrix = &surface->transform.matrix;
struct weston_matrix *inverse = &surface->transform.inverse;
struct weston_transform *tform;
surface->transform.enabled = 1;
/* Otherwise identity matrix, but with x and y translation. */
surface->transform.position.matrix.type = WESTON_MATRIX_TRANSFORM_TRANSLATE;
surface->transform.position.matrix.d[12] = surface->geometry.x;
surface->transform.position.matrix.d[13] = surface->geometry.y;
weston_matrix_init(matrix);
wl_list_for_each(tform, &surface->geometry.transformation_list, link)
weston_matrix_multiply(matrix, &tform->matrix);
if (parent)
weston_matrix_multiply(matrix, &parent->transform.matrix);
if (weston_matrix_invert(inverse, matrix) < 0) {
/* Oops, bad total transformation, not invertible */
weston_log("error: weston_surface %p"
" transformation not invertible.\n", surface);
return -1;
}
surface_compute_bbox(surface, 0, 0, surface->geometry.width,
surface->geometry.height,
&surface->transform.boundingbox);
return 0;
}
WL_EXPORT void
weston_surface_update_transform(struct weston_surface *surface)
{
struct weston_surface *parent = surface->geometry.parent;
if (!surface->transform.dirty)
return;
if (parent)
weston_surface_update_transform(parent);
surface->transform.dirty = 0;
weston_surface_damage_below(surface);
pixman_region32_fini(&surface->transform.boundingbox);
pixman_region32_fini(&surface->transform.opaque);
pixman_region32_init(&surface->transform.opaque);
/* transform.position is always in transformation_list */
if (surface->geometry.transformation_list.next ==
&surface->transform.position.link &&
surface->geometry.transformation_list.prev ==
&surface->transform.position.link &&
!parent) {
weston_surface_update_transform_disable(surface);
} else {
if (weston_surface_update_transform_enable(surface) < 0)
weston_surface_update_transform_disable(surface);
}
weston_surface_damage_below(surface);
weston_surface_assign_output(surface);
wl_signal_emit(&surface->compositor->transform_signal, surface);
}
WL_EXPORT void
weston_surface_geometry_dirty(struct weston_surface *surface)
{
struct weston_surface *child;
/*
* The invariant: if surface->geometry.dirty, then all surfaces
* in surface->geometry.child_list have geometry.dirty too.
* Corollary: if not parent->geometry.dirty, then all ancestors
* are not dirty.
*/
if (surface->transform.dirty)
return;
surface->transform.dirty = 1;
wl_list_for_each(child, &surface->geometry.child_list,
geometry.parent_link)
weston_surface_geometry_dirty(child);
}
WL_EXPORT void
weston_surface_to_global_fixed(struct weston_surface *surface,
wl_fixed_t sx, wl_fixed_t sy,
wl_fixed_t *x, wl_fixed_t *y)
{
float xf, yf;
weston_surface_to_global_float(surface,
wl_fixed_to_double(sx),
wl_fixed_to_double(sy),
&xf, &yf);
*x = wl_fixed_from_double(xf);
*y = wl_fixed_from_double(yf);
}
WL_EXPORT void
weston_surface_from_global_float(struct weston_surface *surface,
float x, float y, float *sx, float *sy)
{
if (surface->transform.enabled) {
struct weston_vector v = { { x, y, 0.0f, 1.0f } };
weston_matrix_transform(&surface->transform.inverse, &v);
if (fabsf(v.f[3]) < 1e-6) {
weston_log("warning: numerical instability in "
"weston_surface_from_global(), divisor = %g\n",
v.f[3]);
*sx = 0;
*sy = 0;
return;
}
*sx = v.f[0] / v.f[3];
*sy = v.f[1] / v.f[3];
} else {
*sx = x - surface->geometry.x;
*sy = y - surface->geometry.y;
}
}
WL_EXPORT void
weston_surface_from_global_fixed(struct weston_surface *surface,
wl_fixed_t x, wl_fixed_t y,
wl_fixed_t *sx, wl_fixed_t *sy)
{
float sxf, syf;
weston_surface_from_global_float(surface,
wl_fixed_to_double(x),
wl_fixed_to_double(y),
&sxf, &syf);
*sx = wl_fixed_from_double(sxf);
*sy = wl_fixed_from_double(syf);
}
WL_EXPORT void
weston_surface_from_global(struct weston_surface *surface,
int32_t x, int32_t y, int32_t *sx, int32_t *sy)
{
float sxf, syf;
weston_surface_from_global_float(surface, x, y, &sxf, &syf);
*sx = floorf(sxf);
*sy = floorf(syf);
}
WL_EXPORT void
weston_surface_schedule_repaint(struct weston_surface *surface)
{
struct weston_output *output;
wl_list_for_each(output, &surface->compositor->output_list, link)
if (surface->output_mask & (1 << output->id))
weston_output_schedule_repaint(output);
}
WL_EXPORT void
weston_surface_damage(struct weston_surface *surface)
{
pixman_region32_union_rect(&surface->damage, &surface->damage,
0, 0, surface->geometry.width,
surface->geometry.height);
weston_surface_schedule_repaint(surface);
}
WL_EXPORT void
weston_surface_configure(struct weston_surface *surface,
float x, float y, int width, int height)
{
surface->geometry.x = x;
surface->geometry.y = y;
surface->geometry.width = width;
surface->geometry.height = height;
weston_surface_geometry_dirty(surface);
}
WL_EXPORT void
weston_surface_set_position(struct weston_surface *surface,
float x, float y)
{
surface->geometry.x = x;
surface->geometry.y = y;
weston_surface_geometry_dirty(surface);
}
static void
transform_parent_handle_parent_destroy(struct wl_listener *listener,
void *data)
{
struct weston_surface *surface =
container_of(listener, struct weston_surface,
geometry.parent_destroy_listener);
weston_surface_set_transform_parent(surface, NULL);
}
WL_EXPORT void
weston_surface_set_transform_parent(struct weston_surface *surface,
struct weston_surface *parent)
{
if (surface->geometry.parent) {
wl_list_remove(&surface->geometry.parent_destroy_listener.link);
wl_list_remove(&surface->geometry.parent_link);
}
surface->geometry.parent = parent;
surface->geometry.parent_destroy_listener.notify =
transform_parent_handle_parent_destroy;
if (parent) {
wl_signal_add(&parent->destroy_signal,
&surface->geometry.parent_destroy_listener);
wl_list_insert(&parent->geometry.child_list,
&surface->geometry.parent_link);
}
weston_surface_geometry_dirty(surface);
}
WL_EXPORT int
weston_surface_is_mapped(struct weston_surface *surface)
{
if (surface->output)
return 1;
else
return 0;
}
WL_EXPORT int32_t
weston_surface_buffer_width(struct weston_surface *surface)
{
int32_t width;
switch (surface->buffer_transform) {
case WL_OUTPUT_TRANSFORM_90:
case WL_OUTPUT_TRANSFORM_270:
case WL_OUTPUT_TRANSFORM_FLIPPED_90:
case WL_OUTPUT_TRANSFORM_FLIPPED_270:
width = surface->buffer_ref.buffer->height;
break;
default:
width = surface->buffer_ref.buffer->width;
break;
}
return width / surface->buffer_scale;
}
WL_EXPORT int32_t
weston_surface_buffer_height(struct weston_surface *surface)
{
int32_t height;
switch (surface->buffer_transform) {
case WL_OUTPUT_TRANSFORM_90:
case WL_OUTPUT_TRANSFORM_270:
case WL_OUTPUT_TRANSFORM_FLIPPED_90:
case WL_OUTPUT_TRANSFORM_FLIPPED_270:
height = surface->buffer_ref.buffer->width;
break;
default:
height = surface->buffer_ref.buffer->height;
break;
}
return height / surface->buffer_scale;
}
WL_EXPORT uint32_t
weston_compositor_get_time(void)
{
struct timeval tv;
gettimeofday(&tv, NULL);
return tv.tv_sec * 1000 + tv.tv_usec / 1000;
}
WL_EXPORT struct weston_surface *
weston_compositor_pick_surface(struct weston_compositor *compositor,
wl_fixed_t x, wl_fixed_t y,
wl_fixed_t *sx, wl_fixed_t *sy)
{
struct weston_surface *surface;
wl_list_for_each(surface, &compositor->surface_list, link) {
weston_surface_from_global_fixed(surface, x, y, sx, sy);
if (pixman_region32_contains_point(&surface->input,
wl_fixed_to_int(*sx),
wl_fixed_to_int(*sy),
NULL))
return surface;
}
return NULL;
}
static void
weston_compositor_repick(struct weston_compositor *compositor)
{
struct weston_seat *seat;
if (!compositor->focus)
return;
wl_list_for_each(seat, &compositor->seat_list, link)
weston_seat_repick(seat);
}
WL_EXPORT void
weston_surface_unmap(struct weston_surface *surface)
{
struct weston_seat *seat;
weston_surface_damage_below(surface);
surface->output = NULL;
wl_list_remove(&surface->layer_link);
wl_list_for_each(seat, &surface->compositor->seat_list, link) {
if (seat->keyboard && seat->keyboard->focus == surface)
weston_keyboard_set_focus(seat->keyboard, NULL);
if (seat->pointer && seat->pointer->focus == surface)
weston_pointer_set_focus(seat->pointer,
NULL,
wl_fixed_from_int(0),
wl_fixed_from_int(0));
}
weston_surface_schedule_repaint(surface);
}
struct weston_frame_callback {
struct wl_resource *resource;
struct wl_list link;
};
WL_EXPORT void
weston_surface_destroy(struct weston_surface *surface)
{
/* Not a valid way to destroy a client surface */
assert(surface->resource == NULL);
wl_signal_emit(&surface->destroy_signal, &surface->resource);
struct weston_compositor *compositor = surface->compositor;
struct weston_frame_callback *cb, *next;
assert(wl_list_empty(&surface->geometry.child_list));
assert(wl_list_empty(&surface->subsurface_list_pending));
assert(wl_list_empty(&surface->subsurface_list));
if (weston_surface_is_mapped(surface))
weston_surface_unmap(surface);
wl_list_for_each_safe(cb, next,
&surface->pending.frame_callback_list, link)
wl_resource_destroy(cb->resource);
pixman_region32_fini(&surface->pending.input);
pixman_region32_fini(&surface->pending.opaque);
pixman_region32_fini(&surface->pending.damage);
if (surface->pending.buffer)
wl_list_remove(&surface->pending.buffer_destroy_listener.link);
weston_buffer_reference(&surface->buffer_ref, NULL);
compositor->renderer->destroy_surface(surface);
pixman_region32_fini(&surface->transform.boundingbox);
pixman_region32_fini(&surface->damage);
pixman_region32_fini(&surface->opaque);
pixman_region32_fini(&surface->clip);
pixman_region32_fini(&surface->input);
wl_list_for_each_safe(cb, next, &surface->frame_callback_list, link)
wl_resource_destroy(cb->resource);
weston_surface_set_transform_parent(surface, NULL);
free(surface);
}
static void
destroy_surface(struct wl_resource *resource)
{
struct weston_surface *surface = wl_resource_get_user_data(resource);
surface->resource = NULL;
weston_surface_destroy(surface);
}
static void
weston_buffer_reference_handle_destroy(struct wl_listener *listener,
void *data)
{
struct weston_buffer_reference *ref =
container_of(listener, struct weston_buffer_reference,
destroy_listener);
assert((struct wl_buffer *)data == ref->buffer);
ref->buffer = NULL;
}
WL_EXPORT void
weston_buffer_reference(struct weston_buffer_reference *ref,
struct wl_buffer *buffer)
{
if (ref->buffer && buffer != ref->buffer) {
ref->buffer->busy_count--;
if (ref->buffer->busy_count == 0) {
assert(ref->buffer->resource.client != NULL);
wl_resource_queue_event(&ref->buffer->resource,
WL_BUFFER_RELEASE);
}
wl_list_remove(&ref->destroy_listener.link);
}
if (buffer && buffer != ref->buffer) {
buffer->busy_count++;
wl_signal_add(&buffer->resource.destroy_signal,
&ref->destroy_listener);
}
ref->buffer = buffer;
ref->destroy_listener.notify = weston_buffer_reference_handle_destroy;
}
static void
weston_surface_attach(struct weston_surface *surface, struct wl_buffer *buffer)
{
weston_buffer_reference(&surface->buffer_ref, buffer);
if (!buffer) {
if (weston_surface_is_mapped(surface))
weston_surface_unmap(surface);
}
surface->compositor->renderer->attach(surface, buffer);
}
WL_EXPORT void
weston_surface_restack(struct weston_surface *surface, struct wl_list *below)
{
wl_list_remove(&surface->layer_link);
wl_list_insert(below, &surface->layer_link);
weston_surface_damage_below(surface);
weston_surface_damage(surface);
}
WL_EXPORT void
weston_compositor_damage_all(struct weston_compositor *compositor)
{
struct weston_output *output;
wl_list_for_each(output, &compositor->output_list, link)
weston_output_damage(output);
}
WL_EXPORT void
weston_output_damage(struct weston_output *output)
{
struct weston_compositor *compositor = output->compositor;
pixman_region32_union(&compositor->primary_plane.damage,
&compositor->primary_plane.damage,
&output->region);
weston_output_schedule_repaint(output);
}
static void
surface_accumulate_damage(struct weston_surface *surface,
pixman_region32_t *opaque)
{
if (surface->buffer_ref.buffer &&
wl_buffer_is_shm(surface->buffer_ref.buffer))
surface->compositor->renderer->flush_damage(surface);
if (surface->transform.enabled) {
pixman_box32_t *extents;
extents = pixman_region32_extents(&surface->damage);
surface_compute_bbox(surface, extents->x1, extents->y1,
extents->x2 - extents->x1,
extents->y2 - extents->y1,
&surface->damage);
pixman_region32_translate(&surface->damage,
-surface->plane->x,
-surface->plane->y);
} else {
pixman_region32_translate(&surface->damage,
surface->geometry.x - surface->plane->x,
surface->geometry.y - surface->plane->y);
}
pixman_region32_subtract(&surface->damage, &surface->damage, opaque);
pixman_region32_union(&surface->plane->damage,
&surface->plane->damage, &surface->damage);
empty_region(&surface->damage);
pixman_region32_copy(&surface->clip, opaque);
pixman_region32_union(opaque, opaque, &surface->transform.opaque);
}
static void
compositor_accumulate_damage(struct weston_compositor *ec)
{
struct weston_plane *plane;
struct weston_surface *es;
pixman_region32_t opaque, clip;
pixman_region32_init(&clip);
wl_list_for_each(plane, &ec->plane_list, link) {
pixman_region32_copy(&plane->clip, &clip);
pixman_region32_init(&opaque);
wl_list_for_each(es, &ec->surface_list, link) {
if (es->plane != plane)
continue;
surface_accumulate_damage(es, &opaque);
}
pixman_region32_union(&clip, &clip, &opaque);
pixman_region32_fini(&opaque);
}
pixman_region32_fini(&clip);
wl_list_for_each(es, &ec->surface_list, link) {
/* Both the renderer and the backend have seen the buffer
* by now. If renderer needs the buffer, it has its own
* reference set. If the backend wants to keep the buffer
* around for migrating the surface into a non-primary plane
* later, keep_buffer is true. Otherwise, drop the core
* reference now, and allow early buffer release. This enables
* clients to use single-buffering.
*/
if (!es->keep_buffer)
weston_buffer_reference(&es->buffer_ref, NULL);
}
}
static void
surface_list_add(struct weston_compositor *compositor,
struct weston_surface *surface)
{
struct weston_subsurface *sub;
if (wl_list_empty(&surface->subsurface_list)) {
weston_surface_update_transform(surface);
wl_list_insert(compositor->surface_list.prev, &surface->link);
return;
}
wl_list_for_each(sub, &surface->subsurface_list, parent_link) {
if (!weston_surface_is_mapped(sub->surface))
continue;
if (sub->surface == surface) {
weston_surface_update_transform(sub->surface);
wl_list_insert(compositor->surface_list.prev,
&sub->surface->link);
} else {
surface_list_add(compositor, sub->surface);
}
}
}
static void
weston_compositor_build_surface_list(struct weston_compositor *compositor)
{
struct weston_surface *surface;
struct weston_layer *layer;
wl_list_init(&compositor->surface_list);
wl_list_for_each(layer, &compositor->layer_list, link) {
wl_list_for_each(surface, &layer->surface_list, layer_link) {
surface_list_add(compositor, surface);
}
}
}
static void
weston_output_repaint(struct weston_output *output, uint32_t msecs)
{
struct weston_compositor *ec = output->compositor;
struct weston_surface *es;
struct weston_animation *animation, *next;
struct weston_frame_callback *cb, *cnext;
struct wl_list frame_callback_list;
pixman_region32_t output_damage;
/* Rebuild the surface list and update surface transforms up front. */
weston_compositor_build_surface_list(ec);
if (output->assign_planes && !output->disable_planes)
output->assign_planes(output);
else
wl_list_for_each(es, &ec->surface_list, link)
weston_surface_move_to_plane(es, &ec->primary_plane);
wl_list_init(&frame_callback_list);
wl_list_for_each(es, &ec->surface_list, link) {
if (es->output == output) {
wl_list_insert_list(&frame_callback_list,
&es->frame_callback_list);
wl_list_init(&es->frame_callback_list);
}
}
compositor_accumulate_damage(ec);
pixman_region32_init(&output_damage);
pixman_region32_intersect(&output_damage,
&ec->primary_plane.damage, &output->region);
pixman_region32_subtract(&output_damage,
&output_damage, &ec->primary_plane.clip);
if (output->dirty)
weston_output_update_matrix(output);
output->repaint(output, &output_damage);
pixman_region32_fini(&output_damage);
output->repaint_needed = 0;
weston_compositor_repick(ec);
wl_event_loop_dispatch(ec->input_loop, 0);
wl_list_for_each_safe(cb, cnext, &frame_callback_list, link) {
wl_callback_send_done(cb->resource, msecs);
wl_resource_destroy(cb->resource);
}
wl_list_for_each_safe(animation, next, &output->animation_list, link) {
animation->frame_counter++;
animation->frame(animation, output, msecs);
}
}
static int
weston_compositor_read_input(int fd, uint32_t mask, void *data)
{
struct weston_compositor *compositor = data;
wl_event_loop_dispatch(compositor->input_loop, 0);
return 1;
}
WL_EXPORT void
weston_output_finish_frame(struct weston_output *output, uint32_t msecs)
{
struct weston_compositor *compositor = output->compositor;
struct wl_event_loop *loop =
wl_display_get_event_loop(compositor->wl_display);
int fd;
output->frame_time = msecs;
if (output->repaint_needed) {
weston_output_repaint(output, msecs);
return;
}
output->repaint_scheduled = 0;
if (compositor->input_loop_source)
return;
fd = wl_event_loop_get_fd(compositor->input_loop);
compositor->input_loop_source =
wl_event_loop_add_fd(loop, fd, WL_EVENT_READABLE,
weston_compositor_read_input, compositor);
}
static void
idle_repaint(void *data)
{
struct weston_output *output = data;
output->start_repaint_loop(output);
}
WL_EXPORT void
weston_layer_init(struct weston_layer *layer, struct wl_list *below)
{
wl_list_init(&layer->surface_list);
if (below != NULL)
wl_list_insert(below, &layer->link);
}
WL_EXPORT void
weston_output_schedule_repaint(struct weston_output *output)
{
struct weston_compositor *compositor = output->compositor;
struct wl_event_loop *loop;
if (compositor->state == WESTON_COMPOSITOR_SLEEPING ||
compositor->state == WESTON_COMPOSITOR_OFFSCREEN)
return;
loop = wl_display_get_event_loop(compositor->wl_display);
output->repaint_needed = 1;
if (output->repaint_scheduled)
return;
wl_event_loop_add_idle(loop, idle_repaint, output);
output->repaint_scheduled = 1;
if (compositor->input_loop_source) {
wl_event_source_remove(compositor->input_loop_source);
compositor->input_loop_source = NULL;
}
}
WL_EXPORT void
weston_compositor_schedule_repaint(struct weston_compositor *compositor)
{
struct weston_output *output;
wl_list_for_each(output, &compositor->output_list, link)
weston_output_schedule_repaint(output);
}
static void
surface_destroy(struct wl_client *client, struct wl_resource *resource)
{
wl_resource_destroy(resource);
}
static void
surface_attach(struct wl_client *client,
struct wl_resource *resource,
struct wl_resource *buffer_resource, int32_t sx, int32_t sy)
{
struct weston_surface *surface = wl_resource_get_user_data(resource);
struct wl_buffer *buffer = NULL;
if (buffer_resource)
buffer = buffer_resource->data;
/* Attach, attach, without commit in between does not send
* wl_buffer.release. */
if (surface->pending.buffer)
wl_list_remove(&surface->pending.buffer_destroy_listener.link);
surface->pending.sx = sx;
surface->pending.sy = sy;
surface->pending.buffer = buffer;
surface->pending.newly_attached = 1;
if (buffer) {
wl_signal_add(&buffer->resource.destroy_signal,
&surface->pending.buffer_destroy_listener);
}
}
static void
surface_damage(struct wl_client *client,
struct wl_resource *resource,
int32_t x, int32_t y, int32_t width, int32_t height)
{
struct weston_surface *surface = wl_resource_get_user_data(resource);
pixman_region32_union_rect(&surface->pending.damage,
&surface->pending.damage,
x, y, width, height);
}
static void
destroy_frame_callback(struct wl_resource *resource)
{
struct weston_frame_callback *cb = wl_resource_get_user_data(resource);
wl_list_remove(&cb->link);
free(cb);
}
static void
surface_frame(struct wl_client *client,
struct wl_resource *resource, uint32_t callback)
{
struct weston_frame_callback *cb;
struct weston_surface *surface = wl_resource_get_user_data(resource);
cb = malloc(sizeof *cb);
if (cb == NULL) {
wl_resource_post_no_memory(resource);
return;
}
cb->resource = wl_client_add_object(client, &wl_callback_interface,
NULL, callback, cb);
wl_resource_set_destructor(cb->resource, destroy_frame_callback);
wl_list_insert(surface->pending.frame_callback_list.prev, &cb->link);
}
static void
surface_set_opaque_region(struct wl_client *client,
struct wl_resource *resource,
struct wl_resource *region_resource)
{
struct weston_surface *surface = wl_resource_get_user_data(resource);
struct weston_region *region;
if (region_resource) {
region = wl_resource_get_user_data(region_resource);
pixman_region32_copy(&surface->pending.opaque,
&region->region);
} else {
empty_region(&surface->pending.opaque);
}
}
static void
surface_set_input_region(struct wl_client *client,
struct wl_resource *resource,
struct wl_resource *region_resource)
{
struct weston_surface *surface = wl_resource_get_user_data(resource);
struct weston_region *region;
if (region_resource) {
region = wl_resource_get_user_data(region_resource);
pixman_region32_copy(&surface->pending.input,
&region->region);
} else {
pixman_region32_fini(&surface->pending.input);
region_init_infinite(&surface->pending.input);
}
}
static void
weston_surface_commit_subsurface_order(struct weston_surface *surface)
{
struct weston_subsurface *sub;
wl_list_for_each_reverse(sub, &surface->subsurface_list_pending,
parent_link_pending) {
wl_list_remove(&sub->parent_link);
wl_list_insert(&surface->subsurface_list, &sub->parent_link);
}
}
static void
weston_surface_commit(struct weston_surface *surface)
{
pixman_region32_t opaque;
int surface_width = 0;
int surface_height = 0;
/* wl_surface.set_buffer_transform */
surface->buffer_transform = surface->pending.buffer_transform;
/* wl_surface.set_buffer_scale */
surface->buffer_scale = surface->pending.buffer_scale;
/* wl_surface.attach */
if (surface->pending.buffer || surface->pending.newly_attached)
weston_surface_attach(surface, surface->pending.buffer);
if (surface->buffer_ref.buffer) {
surface_width = weston_surface_buffer_width(surface);
surface_height = weston_surface_buffer_height(surface);
}
if (surface->configure && surface->pending.newly_attached)
surface->configure(surface,
surface->pending.sx, surface->pending.sy,
surface_width, surface_height);
if (surface->pending.buffer)
wl_list_remove(&surface->pending.buffer_destroy_listener.link);
surface->pending.buffer = NULL;
surface->pending.sx = 0;
surface->pending.sy = 0;
surface->pending.newly_attached = 0;
/* wl_surface.damage */
pixman_region32_union(&surface->damage, &surface->damage,
&surface->pending.damage);
pixman_region32_intersect_rect(&surface->damage, &surface->damage,
0, 0,
surface->geometry.width,
surface->geometry.height);
empty_region(&surface->pending.damage);
/* wl_surface.set_opaque_region */
pixman_region32_init_rect(&opaque, 0, 0,
surface->geometry.width,
surface->geometry.height);
pixman_region32_intersect(&opaque,
&opaque, &surface->pending.opaque);
if (!pixman_region32_equal(&opaque, &surface->opaque)) {
pixman_region32_copy(&surface->opaque, &opaque);
weston_surface_geometry_dirty(surface);
}
pixman_region32_fini(&opaque);
/* wl_surface.set_input_region */
pixman_region32_fini(&surface->input);
pixman_region32_init_rect(&surface->input, 0, 0,
surface->geometry.width,
surface->geometry.height);
pixman_region32_intersect(&surface->input,
&surface->input, &surface->pending.input);
/* wl_surface.frame */
wl_list_insert_list(&surface->frame_callback_list,
&surface->pending.frame_callback_list);
wl_list_init(&surface->pending.frame_callback_list);
weston_surface_commit_subsurface_order(surface);
weston_surface_schedule_repaint(surface);
}
static void
weston_subsurface_commit(struct weston_subsurface *sub);
static void
weston_subsurface_parent_commit(struct weston_subsurface *sub,
int parent_is_synchronized);
static void
surface_commit(struct wl_client *client, struct wl_resource *resource)
{
struct weston_surface *surface = wl_resource_get_user_data(resource);
struct weston_subsurface *sub = weston_surface_to_subsurface(surface);
if (sub) {
weston_subsurface_commit(sub);
return;
}
weston_surface_commit(surface);
wl_list_for_each(sub, &surface->subsurface_list, parent_link) {
if (sub->surface != surface)
weston_subsurface_parent_commit(sub, 0);
}
}
static void
surface_set_buffer_transform(struct wl_client *client,
struct wl_resource *resource, int transform)
{
struct weston_surface *surface = wl_resource_get_user_data(resource);
surface->pending.buffer_transform = transform;
}
static void
surface_set_buffer_scale(struct wl_client *client,
struct wl_resource *resource,
int32_t scale)
{
struct weston_surface *surface = wl_resource_get_user_data(resource);
surface->pending.buffer_scale = scale;
}
static const struct wl_surface_interface surface_interface = {
surface_destroy,
surface_attach,
surface_damage,
surface_frame,
surface_set_opaque_region,
surface_set_input_region,
surface_commit,
surface_set_buffer_transform,
surface_set_buffer_scale
};
static void
compositor_create_surface(struct wl_client *client,
struct wl_resource *resource, uint32_t id)
{
struct weston_compositor *ec = resource->data;
struct weston_surface *surface;
surface = weston_surface_create(ec);
if (surface == NULL) {
wl_resource_post_no_memory(resource);
return;
}
surface->resource = wl_client_add_object(client, &wl_surface_interface,
&surface_interface,
id, surface);
wl_resource_set_destructor(surface->resource, destroy_surface);
}
static void
destroy_region(struct wl_resource *resource)
{
struct weston_region *region = wl_resource_get_user_data(resource);
pixman_region32_fini(&region->region);
free(region);
}
static void
region_destroy(struct wl_client *client, struct wl_resource *resource)
{
wl_resource_destroy(resource);
}
static void
region_add(struct wl_client *client, struct wl_resource *resource,
int32_t x, int32_t y, int32_t width, int32_t height)
{
struct weston_region *region = wl_resource_get_user_data(resource);
pixman_region32_union_rect(&region->region, &region->region,
x, y, width, height);
}
static void
region_subtract(struct wl_client *client, struct wl_resource *resource,
int32_t x, int32_t y, int32_t width, int32_t height)
{
struct weston_region *region = wl_resource_get_user_data(resource);
pixman_region32_t rect;
pixman_region32_init_rect(&rect, x, y, width, height);
pixman_region32_subtract(&region->region, &region->region, &rect);
pixman_region32_fini(&rect);
}
static const struct wl_region_interface region_interface = {
region_destroy,
region_add,
region_subtract
};
static void
compositor_create_region(struct wl_client *client,
struct wl_resource *resource, uint32_t id)
{
struct weston_region *region;
region = malloc(sizeof *region);
if (region == NULL) {
wl_resource_post_no_memory(resource);
return;
}
pixman_region32_init(&region->region);
region->resource = wl_client_add_object(client, &wl_region_interface,
&region_interface, id, region);
wl_resource_set_destructor(region->resource, destroy_region);
}
static const struct wl_compositor_interface compositor_interface = {
compositor_create_surface,
compositor_create_region
};
static void
weston_subsurface_commit_from_cache(struct weston_subsurface *sub)
{
struct weston_surface *surface = sub->surface;
pixman_region32_t opaque;
int surface_width = 0;
int surface_height = 0;
/* wl_surface.set_buffer_transform */
surface->buffer_transform = sub->cached.buffer_transform;
/* wl_surface.set_buffer_scale */
surface->buffer_scale = sub->cached.buffer_scale;
/* wl_surface.attach */
if (sub->cached.buffer_ref.buffer || sub->cached.newly_attached)
weston_surface_attach(surface, sub->cached.buffer_ref.buffer);
weston_buffer_reference(&sub->cached.buffer_ref, NULL);
if (surface->buffer_ref.buffer) {
surface_width = weston_surface_buffer_width(surface);
surface_height = weston_surface_buffer_height(surface);
}
if (surface->configure && sub->cached.newly_attached)
surface->configure(surface, sub->cached.sx, sub->cached.sy,
surface_width, surface_height);
sub->cached.sx = 0;
sub->cached.sy = 0;
sub->cached.newly_attached = 0;
/* wl_surface.damage */
pixman_region32_union(&surface->damage, &surface->damage,
&sub->cached.damage);
pixman_region32_intersect_rect(&surface->damage, &surface->damage,
0, 0,
surface->geometry.width,
surface->geometry.height);
empty_region(&sub->cached.damage);
/* wl_surface.set_opaque_region */
pixman_region32_init_rect(&opaque, 0, 0,
surface->geometry.width,
surface->geometry.height);
pixman_region32_intersect(&opaque,
&opaque, &sub->cached.opaque);
if (!pixman_region32_equal(&opaque, &surface->opaque)) {
pixman_region32_copy(&surface->opaque, &opaque);
weston_surface_geometry_dirty(surface);
}
pixman_region32_fini(&opaque);
/* wl_surface.set_input_region */
pixman_region32_fini(&surface->input);
pixman_region32_init_rect(&surface->input, 0, 0,
surface->geometry.width,
surface->geometry.height);
pixman_region32_intersect(&surface->input,
&surface->input, &sub->cached.input);
/* wl_surface.frame */
wl_list_insert_list(&surface->frame_callback_list,
&sub->cached.frame_callback_list);
wl_list_init(&sub->cached.frame_callback_list);
weston_surface_commit_subsurface_order(surface);
weston_surface_schedule_repaint(surface);
sub->cached.has_data = 0;
}
static void
weston_subsurface_commit_to_cache(struct weston_subsurface *sub)
{
struct weston_surface *surface = sub->surface;
/*
* If this commit would cause the surface to move by the
* attach(dx, dy) parameters, the old damage region must be
* translated to correspond to the new surface coordinate system
* origin.
*/
pixman_region32_translate(&sub->cached.damage,
-surface->pending.sx, -surface->pending.sy);
pixman_region32_union(&sub->cached.damage, &sub->cached.damage,
&surface->pending.damage);
empty_region(&surface->pending.damage);
if (surface->pending.newly_attached) {
sub->cached.newly_attached = 1;
weston_buffer_reference(&sub->cached.buffer_ref,
surface->pending.buffer);
}
sub->cached.sx += surface->pending.sx;
sub->cached.sy += surface->pending.sy;
surface->pending.sx = 0;
surface->pending.sy = 0;
surface->pending.newly_attached = 0;
sub->cached.buffer_transform = surface->pending.buffer_transform;
sub->cached.buffer_scale = surface->pending.buffer_scale;
pixman_region32_copy(&sub->cached.opaque, &surface->pending.opaque);
pixman_region32_copy(&sub->cached.input, &surface->pending.input);
wl_list_insert_list(&sub->cached.frame_callback_list,
&surface->pending.frame_callback_list);
wl_list_init(&surface->pending.frame_callback_list);
sub->cached.has_data = 1;
}
static int
weston_subsurface_is_synchronized(struct weston_subsurface *sub)
{
while (sub) {
if (sub->synchronized)
return 1;
if (!sub->parent)
return 0;
sub = weston_surface_to_subsurface(sub->parent);
}
return 0;
}
static void
weston_subsurface_commit(struct weston_subsurface *sub)
{
struct weston_surface *surface = sub->surface;
struct weston_subsurface *tmp;
/* Recursive check for effectively synchronized. */
if (weston_subsurface_is_synchronized(sub)) {
weston_subsurface_commit_to_cache(sub);
} else {
if (sub->cached.has_data) {
/* flush accumulated state from cache */
weston_subsurface_commit_to_cache(sub);
weston_subsurface_commit_from_cache(sub);
} else {
weston_surface_commit(surface);
}
wl_list_for_each(tmp, &surface->subsurface_list, parent_link) {
if (tmp->surface != surface)
weston_subsurface_parent_commit(tmp, 0);
}
}
}
static void
weston_subsurface_synchronized_commit(struct weston_subsurface *sub)
{
struct weston_surface *surface = sub->surface;
struct weston_subsurface *tmp;
/* From now on, commit_from_cache the whole sub-tree, regardless of
* the synchronized mode of each child. This sub-surface or some
* of its ancestors were synchronized, so we are synchronized
* all the way down.
*/
if (sub->cached.has_data)
weston_subsurface_commit_from_cache(sub);
wl_list_for_each(tmp, &surface->subsurface_list, parent_link) {
if (tmp->surface != surface)
weston_subsurface_parent_commit(tmp, 1);
}
}
static void
weston_subsurface_parent_commit(struct weston_subsurface *sub,
int parent_is_synchronized)
{
if (sub->position.set) {
weston_surface_set_position(sub->surface,
sub->position.x, sub->position.y);
sub->position.set = 0;
}
if (parent_is_synchronized || sub->synchronized)
weston_subsurface_synchronized_commit(sub);
}
static void
subsurface_configure(struct weston_surface *surface, int32_t dx, int32_t dy,
int32_t width, int32_t height)
{
struct weston_compositor *compositor = surface->compositor;
weston_surface_configure(surface,
surface->geometry.x + dx,
surface->geometry.y + dy,
width, height);
/* No need to check parent mappedness, because if parent is not
* mapped, parent is not in a visible layer, so this sub-surface
* will not be drawn either.
*/
if (!weston_surface_is_mapped(surface)) {
wl_list_init(&surface->layer_link);
/* Cannot call weston_surface_update_transform(),
* because that would call it also for the parent surface,
* which might not be mapped yet. That would lead to
* inconsistent state, where the window could never be
* mapped.
*
* Instead just assing any output, to make
* weston_surface_is_mapped() return true, so that when the
* parent surface does get mapped, this one will get
* included, too. See surface_list_add().
*/
assert(!wl_list_empty(&compositor->output_list));
surface->output = container_of(compositor->output_list.next,
struct weston_output, link);
}
}
static struct weston_subsurface *
weston_surface_to_subsurface(struct weston_surface *surface)
{
if (surface->configure == subsurface_configure)
return surface->configure_private;
return NULL;
}
WL_EXPORT struct weston_surface *
weston_surface_get_main_surface(struct weston_surface *surface)
{
struct weston_subsurface *sub;
while (surface && (sub = weston_surface_to_subsurface(surface)))
surface = sub->parent;
return surface;
}
static void
subsurface_set_position(struct wl_client *client,
struct wl_resource *resource, int32_t x, int32_t y)
{
struct weston_subsurface *sub = wl_resource_get_user_data(resource);
if (!sub)
return;
sub->position.x = x;
sub->position.y = y;
sub->position.set = 1;
}
static struct weston_subsurface *
subsurface_from_surface(struct weston_surface *surface)
{
struct weston_subsurface *sub;
sub = weston_surface_to_subsurface(surface);
if (sub)
return sub;
wl_list_for_each(sub, &surface->subsurface_list, parent_link)
if (sub->surface == surface)
return sub;
return NULL;
}
static struct weston_subsurface *
subsurface_sibling_check(struct weston_subsurface *sub,
struct weston_surface *surface,
const char *request)
{
struct weston_subsurface *sibling;
sibling = subsurface_from_surface(surface);
if (!sibling) {
wl_resource_post_error(sub->resource,
WL_SUBSURFACE_ERROR_BAD_SURFACE,
"%s: wl_surface@%d is not a parent or sibling",
request, wl_resource_get_id(surface->resource));
return NULL;
}
if (sibling->parent != sub->parent) {
wl_resource_post_error(sub->resource,
WL_SUBSURFACE_ERROR_BAD_SURFACE,
"%s: wl_surface@%d has a different parent",
request, wl_resource_get_id(surface->resource));
return NULL;
}
return sibling;
}
static void
subsurface_place_above(struct wl_client *client,
struct wl_resource *resource,
struct wl_resource *sibling_resource)
{
struct weston_subsurface *sub = wl_resource_get_user_data(resource);
struct weston_surface *surface =
wl_resource_get_user_data(sibling_resource);
struct weston_subsurface *sibling;
if (!sub)
return;
sibling = subsurface_sibling_check(sub, surface, "place_above");
if (!sibling)
return;
wl_list_remove(&sub->parent_link_pending);
wl_list_insert(sibling->parent_link_pending.prev,
&sub->parent_link_pending);
}
static void
subsurface_place_below(struct wl_client *client,
struct wl_resource *resource,
struct wl_resource *sibling_resource)
{
struct weston_subsurface *sub = wl_resource_get_user_data(resource);
struct weston_surface *surface =
wl_resource_get_user_data(sibling_resource);
struct weston_subsurface *sibling;
if (!sub)
return;
sibling = subsurface_sibling_check(sub, surface, "place_below");
if (!sibling)
return;
wl_list_remove(&sub->parent_link_pending);
wl_list_insert(&sibling->parent_link_pending,
&sub->parent_link_pending);
}
static void
subsurface_set_sync(struct wl_client *client, struct wl_resource *resource)
{
struct weston_subsurface *sub = wl_resource_get_user_data(resource);
if (sub)
sub->synchronized = 1;
}
static void
subsurface_set_desync(struct wl_client *client, struct wl_resource *resource)
{
struct weston_subsurface *sub = wl_resource_get_user_data(resource);
if (sub && sub->synchronized) {
sub->synchronized = 0;
/* If sub became effectively desynchronized, flush. */
if (!weston_subsurface_is_synchronized(sub))
weston_subsurface_synchronized_commit(sub);
}
}
static void
weston_subsurface_cache_init(struct weston_subsurface *sub)
{
pixman_region32_init(&sub->cached.damage);
pixman_region32_init(&sub->cached.opaque);
pixman_region32_init(&sub->cached.input);
wl_list_init(&sub->cached.frame_callback_list);
sub->cached.buffer_ref.buffer = NULL;
}
static void
weston_subsurface_cache_fini(struct weston_subsurface *sub)
{
struct weston_frame_callback *cb, *tmp;
wl_list_for_each_safe(cb, tmp, &sub->cached.frame_callback_list, link)
wl_resource_destroy(cb->resource);
weston_buffer_reference(&sub->cached.buffer_ref, NULL);
pixman_region32_fini(&sub->cached.damage);
pixman_region32_fini(&sub->cached.opaque);
pixman_region32_fini(&sub->cached.input);
}
static void
weston_subsurface_unlink_parent(struct weston_subsurface *sub)
{
wl_list_remove(&sub->parent_link);
wl_list_remove(&sub->parent_link_pending);
wl_list_remove(&sub->parent_destroy_listener.link);
sub->parent = NULL;
}
static void
weston_subsurface_destroy(struct weston_subsurface *sub);
static void
subsurface_handle_surface_destroy(struct wl_listener *listener, void *data)
{
struct weston_subsurface *sub =
container_of(listener, struct weston_subsurface,
surface_destroy_listener);
assert(data == &sub->surface->resource);
/* The protocol object (wl_resource) is left inert. */
if (sub->resource)
wl_resource_set_user_data(sub->resource, NULL);
weston_subsurface_destroy(sub);
}
static void
subsurface_handle_parent_destroy(struct wl_listener *listener, void *data)
{
struct weston_subsurface *sub =
container_of(listener, struct weston_subsurface,
parent_destroy_listener);
assert(data == &sub->parent->resource);
assert(sub->surface != sub->parent);
if (weston_surface_is_mapped(sub->surface))
weston_surface_unmap(sub->surface);
weston_subsurface_unlink_parent(sub);
}
static void
subsurface_resource_destroy(struct wl_resource *resource)
{
struct weston_subsurface *sub = wl_resource_get_user_data(resource);
if (sub)
weston_subsurface_destroy(sub);
free(resource);
}
static void
subsurface_destroy(struct wl_client *client, struct wl_resource *resource)
{
wl_resource_destroy(resource);
}
static void
weston_subsurface_link_parent(struct weston_subsurface *sub,
struct weston_surface *parent)
{
sub->parent = parent;
sub->parent_destroy_listener.notify = subsurface_handle_parent_destroy;
wl_signal_add(&parent->destroy_signal,
&sub->parent_destroy_listener);
wl_list_insert(&parent->subsurface_list, &sub->parent_link);
wl_list_insert(&parent->subsurface_list_pending,
&sub->parent_link_pending);
}
static void
weston_subsurface_link_surface(struct weston_subsurface *sub,
struct weston_surface *surface)
{
sub->surface = surface;
sub->surface_destroy_listener.notify =
subsurface_handle_surface_destroy;
wl_signal_add(&surface->destroy_signal,
&sub->surface_destroy_listener);
}
static void
weston_subsurface_destroy(struct weston_subsurface *sub)
{
assert(sub->surface);
if (sub->resource) {
assert(weston_surface_to_subsurface(sub->surface) == sub);
assert(sub->parent_destroy_listener.notify ==
subsurface_handle_parent_destroy);
weston_surface_set_transform_parent(sub->surface, NULL);
if (sub->parent)
weston_subsurface_unlink_parent(sub);
weston_subsurface_cache_fini(sub);
sub->surface->configure = NULL;
sub->surface->configure_private = NULL;
} else {
/* the dummy weston_subsurface for the parent itself */
assert(sub->parent_destroy_listener.notify == NULL);
wl_list_remove(&sub->parent_link);
wl_list_remove(&sub->parent_link_pending);
}
wl_list_remove(&sub->surface_destroy_listener.link);
free(sub);
}
static const struct wl_subsurface_interface subsurface_implementation = {
subsurface_destroy,
subsurface_set_position,
subsurface_place_above,
subsurface_place_below,
subsurface_set_sync,
subsurface_set_desync
};
static struct weston_subsurface *
weston_subsurface_create(uint32_t id, struct weston_surface *surface,
struct weston_surface *parent)
{
struct weston_subsurface *sub;
struct wl_client *client = wl_resource_get_client(surface->resource);
sub = calloc(1, sizeof *sub);
if (!sub)
return NULL;
sub->resource = wl_client_add_object(client,
&wl_subsurface_interface,
&subsurface_implementation,
id, sub);
if (!sub->resource) {
free(sub);
return NULL;
}
wl_resource_set_destructor(sub->resource, subsurface_resource_destroy);
weston_subsurface_link_surface(sub, surface);
weston_subsurface_link_parent(sub, parent);
weston_subsurface_cache_init(sub);
sub->synchronized = 1;
weston_surface_set_transform_parent(surface, parent);
return sub;
}
/* Create a dummy subsurface for having the parent itself in its
* sub-surface lists. Makes stacking order manipulation easy.
*/
static struct weston_subsurface *
weston_subsurface_create_for_parent(struct weston_surface *parent)
{
struct weston_subsurface *sub;
sub = calloc(1, sizeof *sub);
if (!sub)
return NULL;
weston_subsurface_link_surface(sub, parent);
sub->parent = parent;
wl_list_insert(&parent->subsurface_list, &sub->parent_link);
wl_list_insert(&parent->subsurface_list_pending,
&sub->parent_link_pending);
return sub;
}
static void
subcompositor_get_subsurface(struct wl_client *client,
struct wl_resource *resource,
uint32_t id,
struct wl_resource *surface_resource,
struct wl_resource *parent_resource)
{
struct weston_surface *surface =
wl_resource_get_user_data(surface_resource);
struct weston_surface *parent =
wl_resource_get_user_data(parent_resource);
struct weston_subsurface *sub;
static const char where[] = "get_subsurface: wl_subsurface@";
if (surface == parent) {
wl_resource_post_error(resource,
WL_SUBCOMPOSITOR_ERROR_BAD_SURFACE,
"%s%d: wl_surface@%d cannot be its own parent",
where, id, wl_resource_get_id(surface_resource));
return;
}
if (weston_surface_to_subsurface(surface)) {
wl_resource_post_error(resource,
WL_SUBCOMPOSITOR_ERROR_BAD_SURFACE,
"%s%d: wl_surface@%d is already a sub-surface",
where, id, wl_resource_get_id(surface_resource));
return;
}
if (surface->configure) {
wl_resource_post_error(resource,
WL_SUBCOMPOSITOR_ERROR_BAD_SURFACE,
"%s%d: wl_surface@%d already has a role",
where, id, wl_resource_get_id(surface_resource));
return;
}
if (weston_surface_get_main_surface(parent) == surface) {
wl_resource_post_error(resource,
WL_SUBCOMPOSITOR_ERROR_BAD_SURFACE,
"%s%d: wl_surface@%d is an ancestor of parent",
where, id, wl_resource_get_id(surface_resource));
return;
}
/* make sure the parent is in its own list */
if (wl_list_empty(&parent->subsurface_list)) {
if (!weston_subsurface_create_for_parent(parent)) {
wl_resource_post_no_memory(resource);
return;
}
}
sub = weston_subsurface_create(id, surface, parent);
if (!sub) {
wl_resource_post_no_memory(resource);
return;
}
surface->configure = subsurface_configure;
surface->configure_private = sub;
}
static void
subcompositor_destroy(struct wl_client *client, struct wl_resource *resource)
{
wl_resource_destroy(resource);
}
static const struct wl_subcompositor_interface subcompositor_interface = {
subcompositor_destroy,
subcompositor_get_subsurface
};
static void
bind_subcompositor(struct wl_client *client,
void *data, uint32_t version, uint32_t id)
{
struct weston_compositor *compositor = data;
wl_client_add_object(client, &wl_subcompositor_interface,
&subcompositor_interface, id, compositor);
}
static void
weston_compositor_dpms(struct weston_compositor *compositor,
enum dpms_enum state)
{
struct weston_output *output;
wl_list_for_each(output, &compositor->output_list, link)
if (output->set_dpms)
output->set_dpms(output, state);
}
WL_EXPORT void
weston_compositor_wake(struct weston_compositor *compositor)
{
switch (compositor->state) {
case WESTON_COMPOSITOR_SLEEPING:
weston_compositor_dpms(compositor, WESTON_DPMS_ON);
/* fall through */
case WESTON_COMPOSITOR_IDLE:
case WESTON_COMPOSITOR_OFFSCREEN:
wl_signal_emit(&compositor->wake_signal, compositor);
/* fall through */
default:
compositor->state = WESTON_COMPOSITOR_ACTIVE;
wl_event_source_timer_update(compositor->idle_source,
compositor->idle_time * 1000);
}
}
WL_EXPORT void
weston_compositor_offscreen(struct weston_compositor *compositor)
{
switch (compositor->state) {
case WESTON_COMPOSITOR_OFFSCREEN:
return;
case WESTON_COMPOSITOR_SLEEPING:
weston_compositor_dpms(compositor, WESTON_DPMS_ON);
/* fall through */
default:
compositor->state = WESTON_COMPOSITOR_OFFSCREEN;
wl_event_source_timer_update(compositor->idle_source, 0);
}
}
WL_EXPORT void
weston_compositor_sleep(struct weston_compositor *compositor)
{
if (compositor->state == WESTON_COMPOSITOR_SLEEPING)
return;
wl_event_source_timer_update(compositor->idle_source, 0);
compositor->state = WESTON_COMPOSITOR_SLEEPING;
weston_compositor_dpms(compositor, WESTON_DPMS_OFF);
}
static int
idle_handler(void *data)
{
struct weston_compositor *compositor = data;
if (compositor->idle_inhibit)
return 1;
compositor->state = WESTON_COMPOSITOR_IDLE;
wl_signal_emit(&compositor->idle_signal, compositor);
return 1;
}
WL_EXPORT void
weston_plane_init(struct weston_plane *plane, int32_t x, int32_t y)
{
pixman_region32_init(&plane->damage);
pixman_region32_init(&plane->clip);
plane->x = x;
plane->y = y;
}
WL_EXPORT void
weston_plane_release(struct weston_plane *plane)
{
pixman_region32_fini(&plane->damage);
pixman_region32_fini(&plane->clip);
}
WL_EXPORT void
weston_compositor_stack_plane(struct weston_compositor *ec,
struct weston_plane *plane,
struct weston_plane *above)
{
if (above)
wl_list_insert(above->link.prev, &plane->link);
else
wl_list_insert(&ec->plane_list, &plane->link);
}
static void unbind_resource(struct wl_resource *resource)
{
wl_list_remove(wl_resource_get_link(resource));
free(resource);
}
static void
bind_output(struct wl_client *client,
void *data, uint32_t version, uint32_t id)
{
struct weston_output *output = data;
struct weston_mode *mode;
struct wl_resource *resource;
resource = wl_client_add_object(client,
&wl_output_interface, NULL, id, data);
wl_list_insert(&output->resource_list, wl_resource_get_link(resource));
wl_resource_set_destructor(resource, unbind_resource);
wl_output_send_geometry(resource,
output->x,
output->y,
output->mm_width,
output->mm_height,
output->subpixel,
output->make, output->model,
output->transform);
if (version >= 2)
wl_output_send_scale(resource,
output->scale);
wl_list_for_each (mode, &output->mode_list, link) {
wl_output_send_mode(resource,
mode->flags,
mode->width,
mode->height,
mode->refresh);
}
if (version >= 2)
wl_output_send_done(resource);
}
WL_EXPORT void
weston_output_destroy(struct weston_output *output)
{
struct weston_compositor *c = output->compositor;
wl_signal_emit(&output->destroy_signal, output);
free(output->name);
pixman_region32_fini(&output->region);
pixman_region32_fini(&output->previous_damage);
output->compositor->output_id_pool &= ~(1 << output->id);
wl_display_remove_global(c->wl_display, output->global);
}
static void
weston_output_compute_transform(struct weston_output *output)
{
struct weston_matrix transform;
int flip;
weston_matrix_init(&transform);
transform.type = WESTON_MATRIX_TRANSFORM_ROTATE;
switch(output->transform) {
case WL_OUTPUT_TRANSFORM_FLIPPED:
case WL_OUTPUT_TRANSFORM_FLIPPED_90:
case WL_OUTPUT_TRANSFORM_FLIPPED_180:
case WL_OUTPUT_TRANSFORM_FLIPPED_270:
transform.type |= WESTON_MATRIX_TRANSFORM_OTHER;
flip = -1;
break;
default:
flip = 1;
break;
}
switch(output->transform) {
case WL_OUTPUT_TRANSFORM_NORMAL:
case WL_OUTPUT_TRANSFORM_FLIPPED:
transform.d[0] = flip;
transform.d[1] = 0;
transform.d[4] = 0;
transform.d[5] = 1;
break;
case WL_OUTPUT_TRANSFORM_90:
case WL_OUTPUT_TRANSFORM_FLIPPED_90:
transform.d[0] = 0;
transform.d[1] = -flip;
transform.d[4] = 1;
transform.d[5] = 0;
break;
case WL_OUTPUT_TRANSFORM_180:
case WL_OUTPUT_TRANSFORM_FLIPPED_180:
transform.d[0] = -flip;
transform.d[1] = 0;
transform.d[4] = 0;
transform.d[5] = -1;
break;
case WL_OUTPUT_TRANSFORM_270:
case WL_OUTPUT_TRANSFORM_FLIPPED_270:
transform.d[0] = 0;
transform.d[1] = flip;
transform.d[4] = -1;
transform.d[5] = 0;
break;
default:
break;
}
weston_matrix_multiply(&output->matrix, &transform);
}
WL_EXPORT void
weston_output_update_matrix(struct weston_output *output)
{
float magnification;
struct weston_matrix camera;
struct weston_matrix modelview;
weston_matrix_init(&output->matrix);
weston_matrix_translate(&output->matrix,
-(output->x + (output->border.right + output->width - output->border.left) / 2.0),
-(output->y + (output->border.bottom + output->height - output->border.top) / 2.0), 0);
weston_matrix_scale(&output->matrix,
2.0 / (output->width + output->border.left + output->border.right),
-2.0 / (output->height + output->border.top + output->border.bottom), 1);
weston_output_compute_transform(output);
if (output->zoom.active) {
magnification = 1 / (1 - output->zoom.spring_z.current);
weston_matrix_init(&camera);
weston_matrix_init(&modelview);
weston_output_update_zoom(output, output->zoom.type);
weston_matrix_translate(&camera, output->zoom.trans_x,
-output->zoom.trans_y, 0);
weston_matrix_invert(&modelview, &camera);
weston_matrix_scale(&modelview, magnification, magnification, 1.0);
weston_matrix_multiply(&output->matrix, &modelview);
}
output->dirty = 0;
}
static void
weston_output_transform_scale_init(struct weston_output *output, uint32_t transform, uint32_t scale)
{
output->transform = transform;
switch (transform) {
case WL_OUTPUT_TRANSFORM_90:
case WL_OUTPUT_TRANSFORM_270:
case WL_OUTPUT_TRANSFORM_FLIPPED_90:
case WL_OUTPUT_TRANSFORM_FLIPPED_270:
/* Swap width and height */
output->width = output->current->height;
output->height = output->current->width;
break;
case WL_OUTPUT_TRANSFORM_NORMAL:
case WL_OUTPUT_TRANSFORM_180:
case WL_OUTPUT_TRANSFORM_FLIPPED:
case WL_OUTPUT_TRANSFORM_FLIPPED_180:
output->width = output->current->width;
output->height = output->current->height;
break;
default:
break;
}
output->scale = scale;
output->width /= scale;
output->height /= scale;
}
WL_EXPORT void
weston_output_move(struct weston_output *output, int x, int y)
{
output->x = x;
output->y = y;
pixman_region32_init(&output->previous_damage);
pixman_region32_init_rect(&output->region, x, y,
output->width,
output->height);
}
WL_EXPORT void
weston_output_init(struct weston_output *output, struct weston_compositor *c,
int x, int y, int mm_width, int mm_height, uint32_t transform,
int32_t scale)
{
output->compositor = c;
output->x = x;
output->y = y;
output->border.top = 0;
output->border.bottom = 0;
output->border.left = 0;
output->border.right = 0;
output->mm_width = mm_width;
output->mm_height = mm_height;
output->dirty = 1;
output->origin_scale = scale;
weston_output_transform_scale_init(output, transform, scale);
weston_output_init_zoom(output);
weston_output_move(output, x, y);
weston_output_damage(output);
wl_signal_init(&output->frame_signal);
wl_signal_init(&output->destroy_signal);
wl_list_init(&output->animation_list);
wl_list_init(&output->resource_list);
output->id = ffs(~output->compositor->output_id_pool) - 1;
output->compositor->output_id_pool |= 1 << output->id;
output->global =
wl_display_add_global(c->wl_display, &wl_output_interface,
output, bind_output);
wl_signal_emit(&c->output_created_signal, output);
}
static void
compositor_bind(struct wl_client *client,
void *data, uint32_t version, uint32_t id)
{
struct weston_compositor *compositor = data;
wl_client_add_object(client, &wl_compositor_interface,
&compositor_interface, id, compositor);
}
static void
log_uname(void)
{
struct utsname usys;
uname(&usys);
weston_log("OS: %s, %s, %s, %s\n", usys.sysname, usys.release,
usys.version, usys.machine);
}
WL_EXPORT int
weston_environment_get_fd(const char *env)
{
char *e, *end;
int fd, flags;
e = getenv(env);
if (!e)
return -1;
fd = strtol(e, &end, 0);
if (*end != '\0')
return -1;
flags = fcntl(fd, F_GETFD);
if (flags == -1)
return -1;
fcntl(fd, F_SETFD, flags | FD_CLOEXEC);
unsetenv(env);
return fd;
}
WL_EXPORT int
weston_compositor_init(struct weston_compositor *ec,
struct wl_display *display,
int *argc, char *argv[],
struct weston_config *config)
{
struct wl_event_loop *loop;
struct xkb_rule_names xkb_names;
struct weston_config_section *s;
ec->config = config;
ec->wl_display = display;
wl_signal_init(&ec->destroy_signal);
wl_signal_init(&ec->activate_signal);
wl_signal_init(&ec->transform_signal);
wl_signal_init(&ec->kill_signal);
wl_signal_init(&ec->idle_signal);
wl_signal_init(&ec->wake_signal);
wl_signal_init(&ec->show_input_panel_signal);
wl_signal_init(&ec->hide_input_panel_signal);
wl_signal_init(&ec->update_input_panel_signal);
wl_signal_init(&ec->seat_created_signal);
wl_signal_init(&ec->output_created_signal);
ec->launcher_sock = weston_environment_get_fd("WESTON_LAUNCHER_SOCK");
ec->output_id_pool = 0;
if (!wl_display_add_global(display, &wl_compositor_interface,
ec, compositor_bind))
return -1;
if (!wl_display_add_global(display, &wl_subcompositor_interface,
ec, bind_subcompositor))
return -1;
wl_list_init(&ec->surface_list);
wl_list_init(&ec->plane_list);
wl_list_init(&ec->layer_list);
wl_list_init(&ec->seat_list);
wl_list_init(&ec->output_list);
wl_list_init(&ec->key_binding_list);
wl_list_init(&ec->button_binding_list);
wl_list_init(&ec->axis_binding_list);
wl_list_init(&ec->debug_binding_list);
weston_plane_init(&ec->primary_plane, 0, 0);
weston_compositor_stack_plane(ec, &ec->primary_plane, NULL);
s = weston_config_get_section(ec->config, "keyboard", NULL, NULL);
weston_config_section_get_string(s, "keymap_rules",
(char **) &xkb_names.rules, NULL);
weston_config_section_get_string(s, "keymap_model",
(char **) &xkb_names.model, NULL);
weston_config_section_get_string(s, "keymap_layout",
(char **) &xkb_names.layout, NULL);
weston_config_section_get_string(s, "keymap_variant",
(char **) &xkb_names.variant, NULL);
weston_config_section_get_string(s, "keymap_options",
(char **) &xkb_names.options, NULL);
if (weston_compositor_xkb_init(ec, &xkb_names) < 0)
return -1;
ec->ping_handler = NULL;
screenshooter_create(ec);
text_cursor_position_notifier_create(ec);
text_backend_init(ec);
wl_data_device_manager_init(ec->wl_display);
wl_display_init_shm(display);
loop = wl_display_get_event_loop(ec->wl_display);
ec->idle_source = wl_event_loop_add_timer(loop, idle_handler, ec);
wl_event_source_timer_update(ec->idle_source, ec->idle_time * 1000);
ec->input_loop = wl_event_loop_create();
weston_layer_init(&ec->fade_layer, &ec->layer_list);
weston_layer_init(&ec->cursor_layer, &ec->fade_layer.link);
weston_compositor_schedule_repaint(ec);
return 0;
}
WL_EXPORT void
weston_compositor_shutdown(struct weston_compositor *ec)
{
struct weston_output *output, *next;
wl_event_source_remove(ec->idle_source);
if (ec->input_loop_source)
wl_event_source_remove(ec->input_loop_source);
/* Destroy all outputs associated with this compositor */
wl_list_for_each_safe(output, next, &ec->output_list, link)
output->destroy(output);
weston_binding_list_destroy_all(&ec->key_binding_list);
weston_binding_list_destroy_all(&ec->button_binding_list);
weston_binding_list_destroy_all(&ec->axis_binding_list);
weston_binding_list_destroy_all(&ec->debug_binding_list);
weston_plane_release(&ec->primary_plane);
wl_event_loop_destroy(ec->input_loop);
weston_config_destroy(ec->config);
}
WL_EXPORT void
weston_version(int *major, int *minor, int *micro)
{
*major = WESTON_VERSION_MAJOR;
*minor = WESTON_VERSION_MINOR;
*micro = WESTON_VERSION_MICRO;
}
static const struct {
uint32_t bit; /* enum weston_capability */
const char *desc;
} capability_strings[] = {
{ WESTON_CAP_ROTATION_ANY, "arbitrary surface rotation:" },
{ WESTON_CAP_CAPTURE_YFLIP, "screen capture uses y-flip:" },
};
static void
weston_compositor_log_capabilities(struct weston_compositor *compositor)
{
unsigned i;
int yes;
weston_log("Compositor capabilities:\n");
for (i = 0; i < ARRAY_LENGTH(capability_strings); i++) {
yes = compositor->capabilities & capability_strings[i].bit;
weston_log_continue(STAMP_SPACE "%s %s\n",
capability_strings[i].desc,
yes ? "yes" : "no");
}
}
static int on_term_signal(int signal_number, void *data)
{
struct wl_display *display = data;
weston_log("caught signal %d\n", signal_number);
wl_display_terminate(display);
return 1;
}
#ifdef HAVE_LIBUNWIND
static void
print_backtrace(void)
{
unw_cursor_t cursor;
unw_context_t context;
unw_word_t off;
unw_proc_info_t pip;
int ret, i = 0;
char procname[256];
const char *filename;
Dl_info dlinfo;
pip.unwind_info = NULL;
ret = unw_getcontext(&context);
if (ret) {
weston_log("unw_getcontext: %d\n", ret);
return;
}
ret = unw_init_local(&cursor, &context);
if (ret) {
weston_log("unw_init_local: %d\n", ret);
return;
}
ret = unw_step(&cursor);
while (ret > 0) {
ret = unw_get_proc_info(&cursor, &pip);
if (ret) {
weston_log("unw_get_proc_info: %d\n", ret);
break;
}
ret = unw_get_proc_name(&cursor, procname, 256, &off);
if (ret && ret != -UNW_ENOMEM) {
if (ret != -UNW_EUNSPEC)
weston_log("unw_get_proc_name: %d\n", ret);
procname[0] = '?';
procname[1] = 0;
}
if (dladdr((void *)(pip.start_ip + off), &dlinfo) && dlinfo.dli_fname &&
*dlinfo.dli_fname)
filename = dlinfo.dli_fname;
else
filename = "?";
weston_log("%u: %s (%s%s+0x%x) [%p]\n", i++, filename, procname,
ret == -UNW_ENOMEM ? "..." : "", (int)off, (void *)(pip.start_ip + off));
ret = unw_step(&cursor);
if (ret < 0)
weston_log("unw_step: %d\n", ret);
}
}
#else
static void
print_backtrace(void)
{
void *buffer[32];
int i, count;
Dl_info info;
count = backtrace(buffer, ARRAY_LENGTH(buffer));
for (i = 0; i < count; i++) {
dladdr(buffer[i], &info);
weston_log(" [%016lx] %s (%s)\n",
(long) buffer[i],
info.dli_sname ? info.dli_sname : "--",
info.dli_fname);
}
}
#endif
static void
on_caught_signal(int s, siginfo_t *siginfo, void *context)
{
/* This signal handler will do a best-effort backtrace, and
* then call the backend restore function, which will switch
* back to the vt we launched from or ungrab X etc and then
* raise SIGTRAP. If we run weston under gdb from X or a
* different vt, and tell gdb "handle *s* nostop", this
* will allow weston to switch back to gdb on crash and then
* gdb will catch the crash with SIGTRAP.*/
weston_log("caught signal: %d\n", s);
print_backtrace();
segv_compositor->restore(segv_compositor);
raise(SIGTRAP);
}
static void *
load_module(const char *name, const char *entrypoint)
{
char path[PATH_MAX];
void *module, *init;
if (name[0] != '/')
snprintf(path, sizeof path, "%s/%s", MODULEDIR, name);
else
snprintf(path, sizeof path, "%s", name);
module = dlopen(path, RTLD_NOW | RTLD_NOLOAD);
if (module) {
weston_log("Module '%s' already loaded\n", path);
dlclose(module);
return NULL;
}
weston_log("Loading module '%s'\n", path);
module = dlopen(path, RTLD_NOW);
if (!module) {
weston_log("Failed to load module: %s\n", dlerror());
return NULL;
}
init = dlsym(module, entrypoint);
if (!init) {
weston_log("Failed to lookup init function: %s\n", dlerror());
dlclose(module);
return NULL;
}
return init;
}
static int
load_modules(struct weston_compositor *ec, const char *modules,
int *argc, char *argv[])
{
const char *p, *end;
char buffer[256];
int (*module_init)(struct weston_compositor *ec,
int *argc, char *argv[]);
if (modules == NULL)
return 0;
p = modules;
while (*p) {
end = strchrnul(p, ',');
snprintf(buffer, sizeof buffer, "%.*s", (int) (end - p), p);
module_init = load_module(buffer, "module_init");
if (module_init)
module_init(ec, argc, argv);
p = end;
while (*p == ',')
p++;
}
return 0;
}
static const char xdg_error_message[] =
"fatal: environment variable XDG_RUNTIME_DIR is not set.\n";
static const char xdg_wrong_message[] =
"fatal: environment variable XDG_RUNTIME_DIR\n"
"is set to \"%s\", which is not a directory.\n";
static const char xdg_wrong_mode_message[] =
"warning: XDG_RUNTIME_DIR \"%s\" is not configured\n"
"correctly. Unix access mode must be 0700 but is %o,\n"
"and XDG_RUNTIME_DIR must be owned by the user, but is\n"
"owned by UID %d.\n";
static const char xdg_detail_message[] =
"Refer to your distribution on how to get it, or\n"
"http://www.freedesktop.org/wiki/Specifications/basedir-spec\n"
"on how to implement it.\n";
static void
verify_xdg_runtime_dir(void)
{
char *dir = getenv("XDG_RUNTIME_DIR");
struct stat s;
if (!dir) {
weston_log(xdg_error_message);
weston_log_continue(xdg_detail_message);
exit(EXIT_FAILURE);
}
if (stat(dir, &s) || !S_ISDIR(s.st_mode)) {
weston_log(xdg_wrong_message, dir);
weston_log_continue(xdg_detail_message);
exit(EXIT_FAILURE);
}
if ((s.st_mode & 0777) != 0700 || s.st_uid != getuid()) {
weston_log(xdg_wrong_mode_message,
dir, s.st_mode & 0777, s.st_uid);
weston_log_continue(xdg_detail_message);
}
}
static int
usage(int error_code)
{
fprintf(stderr,
"Usage: weston [OPTIONS]\n\n"
"This is weston version " VERSION ", the Wayland reference compositor.\n"
"Weston supports multiple backends, and depending on which backend is in use\n"
"different options will be accepted.\n\n"
"Core options:\n\n"
" --version\t\tPrint weston version\n"
" -B, --backend=MODULE\tBackend module, one of drm-backend.so,\n"
"\t\t\t\tfbdev-backend.so, x11-backend.so or\n"
"\t\t\t\twayland-backend.so\n"
" -S, --socket=NAME\tName of socket to listen on\n"
" -i, --idle-time=SECS\tIdle time in seconds\n"
" --modules\t\tLoad the comma-separated list of modules\n"
" --log==FILE\t\tLog to the given file\n"
" -h, --help\t\tThis help message\n\n");
fprintf(stderr,
"Options for drm-backend.so:\n\n"
" --connector=ID\tBring up only this connector\n"
" --seat=SEAT\t\tThe seat that weston should run on\n"
" --tty=TTY\t\tThe tty to use\n"
" --use-pixman\t\tUse the pixman (CPU) renderer\n"
" --current-mode\tPrefer current KMS mode over EDID preferred mode\n\n");
fprintf(stderr,
"Options for fbdev-backend.so:\n\n"
" --tty=TTY\t\tThe tty to use\n"
" --device=DEVICE\tThe framebuffer device to use\n\n");
fprintf(stderr,
"Options for x11-backend.so:\n\n"
" --width=WIDTH\t\tWidth of X window\n"
" --height=HEIGHT\tHeight of X window\n"
" --fullscreen\t\tRun in fullscreen mode\n"
" --use-pixman\t\tUse the pixman (CPU) renderer\n"
" --output-count=COUNT\tCreate multiple outputs\n"
" --no-input\t\tDont create input devices\n\n");
fprintf(stderr,
"Options for wayland-backend.so:\n\n"
" --width=WIDTH\t\tWidth of Wayland surface\n"
" --height=HEIGHT\tHeight of Wayland surface\n"
" --display=DISPLAY\tWayland display to connect to\n\n");
#if defined(BUILD_RPI_COMPOSITOR) && defined(HAVE_BCM_HOST)
fprintf(stderr,
"Options for rpi-backend.so:\n\n"
" --tty=TTY\t\tThe tty to use\n"
" --single-buffer\tUse single-buffered Dispmanx elements.\n"
" --transform=TR\tThe output transformation, TR is one of:\n"
"\tnormal 90 180 270 flipped flipped-90 flipped-180 flipped-270\n"
"\n");
#endif
exit(error_code);
}
static void
catch_signals(void)
{
struct sigaction action;
action.sa_flags = SA_SIGINFO | SA_RESETHAND;
action.sa_sigaction = on_caught_signal;
sigemptyset(&action.sa_mask);
sigaction(SIGSEGV, &action, NULL);
sigaction(SIGABRT, &action, NULL);
}
int main(int argc, char *argv[])
{
int ret = EXIT_SUCCESS;
struct wl_display *display;
struct weston_compositor *ec;
struct wl_event_source *signals[4];
struct wl_event_loop *loop;
struct weston_compositor
*(*backend_init)(struct wl_display *display,
int *argc, char *argv[],
struct weston_config *config);
int i, config_fd;
char *backend = NULL;
char *modules, *option_modules = NULL;
char *log = NULL;
int32_t idle_time = 300;
int32_t help = 0;
char *socket_name = "wayland-0";
int32_t version = 0;
struct weston_config *config;
struct weston_config_section *section;
const struct weston_option core_options[] = {
{ WESTON_OPTION_STRING, "backend", 'B', &backend },
{ WESTON_OPTION_STRING, "socket", 'S', &socket_name },
{ WESTON_OPTION_INTEGER, "idle-time", 'i', &idle_time },
{ WESTON_OPTION_STRING, "modules", 0, &option_modules },
{ WESTON_OPTION_STRING, "log", 0, &log },
{ WESTON_OPTION_BOOLEAN, "help", 'h', &help },
{ WESTON_OPTION_BOOLEAN, "version", 0, &version },
};
parse_options(core_options, ARRAY_LENGTH(core_options), &argc, argv);
if (help)
usage(EXIT_SUCCESS);
if (version) {
printf(PACKAGE_STRING "\n");
return EXIT_SUCCESS;
}
weston_log_file_open(log);
weston_log("%s\n"
STAMP_SPACE "%s\n"
STAMP_SPACE "Bug reports to: %s\n"
STAMP_SPACE "Build: %s\n",
PACKAGE_STRING, PACKAGE_URL, PACKAGE_BUGREPORT,
BUILD_ID);
log_uname();
verify_xdg_runtime_dir();
display = wl_display_create();
loop = wl_display_get_event_loop(display);
signals[0] = wl_event_loop_add_signal(loop, SIGTERM, on_term_signal,
display);
signals[1] = wl_event_loop_add_signal(loop, SIGINT, on_term_signal,
display);
signals[2] = wl_event_loop_add_signal(loop, SIGQUIT, on_term_signal,
display);
wl_list_init(&child_process_list);
signals[3] = wl_event_loop_add_signal(loop, SIGCHLD, sigchld_handler,
NULL);
if (!backend) {
if (getenv("WAYLAND_DISPLAY"))
backend = "wayland-backend.so";
else if (getenv("DISPLAY"))
backend = "x11-backend.so";
else
backend = WESTON_NATIVE_BACKEND;
}
config_fd = open_config_file("weston.ini");
config = weston_config_parse(config_fd);
close(config_fd);
section = weston_config_get_section(config, "core", NULL, NULL);
weston_config_section_get_string(section, "modules",
&modules, "desktop-shell.so");
backend_init = load_module(backend, "backend_init");
if (!backend_init)
exit(EXIT_FAILURE);
ec = backend_init(display, &argc, argv, config);
if (ec == NULL) {
weston_log("fatal: failed to create compositor\n");
exit(EXIT_FAILURE);
}
catch_signals();
segv_compositor = ec;
ec->idle_time = idle_time;
setenv("WAYLAND_DISPLAY", socket_name, 1);
if (load_modules(ec, modules, &argc, argv) < 0)
goto out;
if (load_modules(ec, option_modules, &argc, argv) < 0)
goto out;
for (i = 1; i < argc; i++)
weston_log("fatal: unhandled option: %s\n", argv[i]);
if (argc > 1) {
ret = EXIT_FAILURE;
goto out;
}
weston_compositor_log_capabilities(ec);
if (wl_display_add_socket(display, socket_name)) {
weston_log("fatal: failed to add socket: %m\n");
ret = EXIT_FAILURE;
goto out;
}
weston_compositor_wake(ec);
wl_display_run(display);
out:
/* prevent further rendering while shutting down */
ec->state = WESTON_COMPOSITOR_OFFSCREEN;
wl_signal_emit(&ec->destroy_signal, ec);
for (i = ARRAY_LENGTH(signals); i;)
wl_event_source_remove(signals[--i]);
weston_compositor_xkb_destroy(ec);
ec->destroy(ec);
wl_display_destroy(display);
weston_log_file_close();
return ret;
}