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#include <wayland-server.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <wlr/session.h>
#include <wlr/backend/interface.h>
#include "common/log.h"
#include "backend/drm.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.output_add);
wl_signal_init(&backend->events.output_remove);
wl_signal_init(&backend->events.keyboard_add);
wl_signal_init(&backend->events.keyboard_remove);
wl_signal_init(&backend->events.pointer_add);
wl_signal_init(&backend->events.pointer_remove);
wl_signal_init(&backend->events.touch_add);
wl_signal_init(&backend->events.touch_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
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 *wlr;
wlr = wlr_drm_backend_create(display, session, udev, gpu);
if (!wlr) {
goto error_gpu;
}
return wlr;
error_gpu:
close(gpu);
error_udev:
wlr_udev_destroy(udev);
error:
return NULL;
}
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