114 lines
2.6 KiB
C
114 lines
2.6 KiB
C
#include <unistd.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <errno.h>
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#include <wayland-server.h>
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#include <wlr/session.h>
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#include <wlr/common/list.h>
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#include "backend/drm/backend.h"
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#include "backend/drm/drm.h"
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#include "backend/drm/udev.h"
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#include "common/log.h"
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struct wlr_drm_backend *wlr_drm_backend_init(struct wl_display *display,
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struct wlr_session *session, struct wl_listener *add, struct wl_listener *rem,
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struct wl_listener *render) {
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struct wlr_drm_backend *backend = calloc(1, sizeof *backend);
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if (!backend) {
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wlr_log(L_ERROR, "Allocation failed: %s", strerror(errno));
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return NULL;
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}
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backend->session = session;
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backend->outputs = list_create();
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if (!backend->outputs) {
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wlr_log(L_ERROR, "Failed to allocate list");
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goto error_backend;
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}
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if (!wlr_udev_init(display, &backend->udev)) {
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wlr_log(L_ERROR, "Failed to start udev");
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goto error_list;
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}
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backend->fd = wlr_udev_find_gpu(&backend->udev, backend->session);
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if (backend->fd == -1) {
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wlr_log(L_ERROR, "Failed to open DRM device");
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goto error_udev;
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}
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struct wl_event_loop *event_loop = wl_display_get_event_loop(display);
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backend->drm_event = wl_event_loop_add_fd(event_loop, backend->fd,
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WL_EVENT_READABLE, wlr_drm_event, NULL);
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if (!backend->drm_event) {
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wlr_log(L_ERROR, "Failed to create DRM event source");
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goto error_fd;
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}
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if (!wlr_drm_renderer_init(&backend->renderer, backend->fd)) {
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wlr_log(L_ERROR, "Failed to initialize renderer");
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goto error_event;
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}
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wl_signal_init(&backend->signals.output_add);
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wl_signal_init(&backend->signals.output_rem);
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wl_signal_init(&backend->signals.output_render);
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if (add) {
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wl_signal_add(&backend->signals.output_add, add);
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}
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if (rem) {
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wl_signal_add(&backend->signals.output_rem, rem);
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}
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if (render) {
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wl_signal_add(&backend->signals.output_render, render);
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}
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wlr_drm_scan_connectors(backend);
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return backend;
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error_event:
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wl_event_source_remove(backend->drm_event);
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error_fd:
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wlr_session_close_file(backend->session, backend->fd);
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error_udev:
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wlr_udev_free(&backend->udev);
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error_list:
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list_free(backend->outputs);
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error_backend:
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free(backend);
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return NULL;
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}
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static void free_output(void *item)
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{
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struct wlr_drm_output *out = item;
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wlr_drm_output_free(out, true);
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free(out);
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}
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void wlr_drm_backend_free(struct wlr_drm_backend *backend)
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{
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if (!backend)
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return;
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list_foreach(backend->outputs, free_output);
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wlr_drm_renderer_free(&backend->renderer);
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wlr_udev_free(&backend->udev);
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wlr_session_close_file(backend->session, backend->fd);
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wlr_session_finish(backend->session);
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wl_event_source_remove(backend->drm_event);
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list_free(backend->outputs);
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free(backend);
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}
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