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#include <wayland-server.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <libinput.h>
#include <wlr/session.h>
#include <wlr/backend/interface.h>
#include <wlr/backend/drm.h>
#include <wlr/backend/libinput.h>
#include <wlr/backend/wayland.h>
#include <wlr/backend/multi.h>
#include "backend/libinput.h"
#include "backend/udev.h"
#include "common/log.h"
struct wlr_backend *wlr_backend_create(const struct wlr_backend_impl *impl,
struct wlr_backend_state *state) {
struct wlr_backend *backend = calloc(1, sizeof(struct wlr_backend));
if (!backend) {
wlr_log(L_ERROR, "Allocation failed: %s", strerror(errno));
return NULL;
}
backend->state = state;
backend->impl = impl;
wl_signal_init(&backend->events.input_add);
wl_signal_init(&backend->events.input_remove);
wl_signal_init(&backend->events.output_add);
wl_signal_init(&backend->events.output_remove);
return backend;
}
bool wlr_backend_init(struct wlr_backend *backend) {
return backend->impl->init(backend->state);
}
void wlr_backend_destroy(struct wlr_backend *backend) {
backend->impl->destroy(backend->state);
free(backend);
}
struct wlr_backend *wlr_backend_autocreate(struct wl_display *display,
struct wlr_session *session) {
// TODO: Choose the most appropriate backend for the situation
// Attempt DRM+libinput
if(getenv("WAYLAND_DISPLAY") || getenv("_WAYLAND_DISPLAY")) {
return wlr_wl_backend_create(display, 1);
}
struct wlr_udev *udev;
if (!(udev = wlr_udev_create(display))) {
wlr_log(L_ERROR, "Failed to start udev");
goto error;
}
int gpu = wlr_udev_find_gpu(udev, session);
if (gpu == -1) {
wlr_log(L_ERROR, "Failed to open DRM device");
goto error_udev;
}
struct wlr_backend *multi = wlr_multi_backend_create();
if (!multi) {
goto error_gpu;
}
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:
close(gpu);
error_udev:
wlr_udev_destroy(udev);
error:
return NULL;
}
struct libinput_device *wlr_libinput_get_device_handle(struct wlr_input_device *dev) {
return dev->state->handle;
}
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