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#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include "backend/drm/backend.h"
#include "backend/drm/drm.h"
#include "backend/drm/event.h"
#include "backend/drm/session.h"
#include "backend/drm/udev.h"
struct wlr_drm_backend *wlr_drm_backend_init(void)
{
struct wlr_drm_backend *backend = calloc(1, sizeof *backend);
if (!backend)
return NULL;
if (!wlr_session_start(&backend->session)) {
fprintf(stderr, "Could not create session\n");
goto error;
}
if (!wlr_udev_init(&backend->udev)) {
fprintf(stderr, "Could not start udev\n");
goto error_session;
}
backend->fd = wlr_udev_find_gpu(&backend->udev, &backend->session);
if (backend->fd == -1) {
fprintf(stderr, "Could not open GPU\n");
goto error_udev;
}
if (!wlr_drm_renderer_init(&backend->renderer, backend, backend->fd)) {
fprintf(stderr, "Could not initalise renderer\n");
goto error_fd;
}
wlr_drm_scan_connectors(backend);
return backend;
error_fd:
wlr_session_release_device(&backend->session, backend->fd);
error_udev:
wlr_udev_free(&backend->udev);
error_session:
wlr_session_end(&backend->session);
error:
free(backend);
return NULL;
}
void wlr_drm_backend_free(struct wlr_drm_backend *backend)
{
if (!backend)
return;
for (size_t i = 0; i < backend->display_len; ++i) {
wlr_drm_display_free(&backend->displays[i]);
}
wlr_drm_renderer_free(&backend->renderer);
wlr_udev_free(&backend->udev);
wlr_session_release_device(&backend->session, backend->fd);
wlr_session_end(&backend->session);
free(backend->events);
free(backend->displays);
free(backend);
}
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