Establish multi backend support

This commit is contained in:
Drew DeVault 2017-06-12 22:22:40 -04:00
parent 5dd96c0772
commit e257afeb7e
5 changed files with 151 additions and 6 deletions

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@ -18,6 +18,7 @@ add_library(wlr-backend
libinput/events.c libinput/events.c
libinput/keyboard.c libinput/keyboard.c
multi/backend.c
backend.c backend.c
egl.c egl.c
udev.c udev.c

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@ -8,6 +8,7 @@
#include <wlr/backend/interface.h> #include <wlr/backend/interface.h>
#include <wlr/backend/drm.h> #include <wlr/backend/drm.h>
#include <wlr/backend/libinput.h> #include <wlr/backend/libinput.h>
#include <wlr/backend/multi.h>
#include "backend/libinput.h" #include "backend/libinput.h"
#include "backend/udev.h" #include "backend/udev.h"
#include "common/log.h" #include "common/log.h"
@ -46,19 +47,32 @@ struct wlr_backend *wlr_backend_autocreate(struct wl_display *display,
wlr_log(L_ERROR, "Failed to start udev"); wlr_log(L_ERROR, "Failed to start udev");
goto error; goto error;
} }
struct wlr_backend *wlr;
wlr = wlr_libinput_backend_create(display, session, udev);
return wlr;
int gpu = wlr_udev_find_gpu(udev, session); int gpu = wlr_udev_find_gpu(udev, session);
if (gpu == -1) { if (gpu == -1) {
wlr_log(L_ERROR, "Failed to open DRM device"); wlr_log(L_ERROR, "Failed to open DRM device");
goto error_udev; goto error_udev;
} }
wlr = wlr_drm_backend_create(display, session, udev, gpu); struct wlr_backend *multi = wlr_multi_backend_create();
if (!wlr) { if (!multi) {
goto error_gpu; goto error_gpu;
} }
return wlr; struct wlr_backend *libinput =
wlr_libinput_backend_create(display, session, udev);
if (!libinput) {
goto error_multi;
}
struct wlr_backend *drm =
wlr_drm_backend_create(display, session, udev, gpu);
if (!drm) {
goto error_libinput;
}
wlr_multi_backend_add(multi, libinput);
wlr_multi_backend_add(multi, drm);
return multi;
error_libinput:
wlr_backend_destroy(libinput);
error_multi:
wlr_backend_destroy(multi);
error_gpu: error_gpu:
close(gpu); close(gpu);
error_udev: error_udev:

107
backend/multi/backend.c Normal file
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@ -0,0 +1,107 @@
#include <stdbool.h>
#include <stdlib.h>
#include <wlr/backend/interface.h>
#include <wlr/common/log.h>
#include "backend/multi.h"
#include "common/log.h"
struct subbackend_state {
struct wlr_backend *backend;
struct wlr_backend *container;
struct wl_listener input_add;
struct wl_listener input_remove;
struct wl_listener output_add;
struct wl_listener output_remove;
};
static bool multi_backend_init(struct wlr_backend_state *state) {
for (size_t i = 0; i < state->backends->length; ++i) {
struct subbackend_state *sub = state->backends->items[i];
if (!wlr_backend_init(sub->backend)) {
wlr_log(L_ERROR, "Failed to initialize backend %zd", i);
return false;
}
}
return true;
}
static void multi_backend_destroy(struct wlr_backend_state *state) {
for (size_t i = 0; i < state->backends->length; ++i) {
struct subbackend_state *sub = state->backends->items[i];
wlr_backend_destroy(sub->backend);
free(sub);
}
list_free(state->backends);
free(state);
}
struct wlr_backend_impl backend_impl = {
.init = multi_backend_init,
.destroy = multi_backend_destroy
};
struct wlr_backend *wlr_multi_backend_create() {
struct wlr_backend_state *state =
calloc(1, sizeof(struct wlr_backend_state));
if (!state) {
wlr_log(L_ERROR, "Backend allocation failed");
return NULL;
}
state->backends = list_create();
if (!state->backends) {
free(state);
wlr_log(L_ERROR, "Backend allocation failed");
return NULL;
}
struct wlr_backend *backend = wlr_backend_create(&backend_impl, state);
state->backend = backend;
return backend;
}
static void input_add_reemit(struct wl_listener *listener, void *data) {
struct subbackend_state *state = wl_container_of(listener,
state, input_add);
wl_signal_emit(&state->container->events.input_add, data);
}
static void input_remove_reemit(struct wl_listener *listener, void *data) {
struct subbackend_state *state = wl_container_of(listener,
state, input_remove);
wl_signal_emit(&state->container->events.input_remove, data);
}
static void output_add_reemit(struct wl_listener *listener, void *data) {
struct subbackend_state *state = wl_container_of(listener,
state, output_add);
wl_signal_emit(&state->container->events.output_add, data);
}
static void output_remove_reemit(struct wl_listener *listener, void *data) {
struct subbackend_state *state = wl_container_of(listener,
state, output_remove);
wl_signal_emit(&state->container->events.output_remove, data);
}
void wlr_multi_backend_add(struct wlr_backend *multi,
struct wlr_backend *backend) {
struct subbackend_state *sub = calloc(1, sizeof(struct subbackend_state));
sub->backend = backend;
sub->container = multi;
sub->input_add.notify = input_add_reemit;
sub->input_remove.notify = input_remove_reemit;
sub->output_add.notify = output_add_reemit;
sub->output_remove.notify = output_remove_reemit;
wl_list_init(&sub->input_add.link);
wl_list_init(&sub->input_remove.link);
wl_list_init(&sub->output_add.link);
wl_list_init(&sub->output_remove.link);
wl_signal_add(&backend->events.input_add, &sub->input_add);
wl_signal_add(&backend->events.input_remove, &sub->input_remove);
wl_signal_add(&backend->events.output_add, &sub->output_add);
wl_signal_add(&backend->events.output_remove, &sub->output_remove);
list_add(multi->state->backends, sub);
}

13
include/backend/multi.h Normal file
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@ -0,0 +1,13 @@
#ifndef _WLR_MULTI_BACKEND_INTERNAL
#define _WLR_MULTI_BACKEND_INTERNAL
#include <wlr/backend/interface.h>
#include <wlr/backend/multi.h>
#include <wlr/common/list.h>
struct wlr_backend_state {
struct wlr_backend *backend;
list_t *backends;
};
#endif

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@ -0,0 +1,10 @@
#ifndef _WLR_BACKEND_MULTI_H
#define _WLR_BACKEND_MULTI_H
#include <wlr/backend.h>
struct wlr_backend *wlr_multi_backend_create();
void wlr_multi_backend_add(struct wlr_backend *multi,
struct wlr_backend *backend);
#endif