mirror of
https://github.com/hyprwm/wlroots-hyprland.git
synced 2024-12-28 12:29:48 +01:00
a290d7a78d
This requires a change to the type of `struct wlr_tablet` and `wlr_tablet_init` signature, both of which are part of the unstable API.
508 lines
15 KiB
C
508 lines
15 KiB
C
#define _POSIX_C_SOURCE 200809L
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#include <assert.h>
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#include <fcntl.h>
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#include <limits.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <wlr/config.h>
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#include <drm_fourcc.h>
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#include <wayland-server-core.h>
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#include <xf86drm.h>
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#include <wlr/backend/interface.h>
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#include <wlr/interfaces/wlr_input_device.h>
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#include <wlr/interfaces/wlr_output.h>
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#include <wlr/util/log.h>
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#include "backend/wayland.h"
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#include "render/drm_format_set.h"
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#include "render/gbm_allocator.h"
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#include "render/wlr_renderer.h"
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#include "util/signal.h"
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#include "drm-client-protocol.h"
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#include "linux-dmabuf-unstable-v1-client-protocol.h"
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#include "pointer-gestures-unstable-v1-client-protocol.h"
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#include "presentation-time-client-protocol.h"
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#include "xdg-decoration-unstable-v1-client-protocol.h"
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#include "xdg-shell-client-protocol.h"
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#include "tablet-unstable-v2-client-protocol.h"
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#include "relative-pointer-unstable-v1-client-protocol.h"
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struct wlr_wl_backend *get_wl_backend_from_backend(struct wlr_backend *backend) {
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assert(wlr_backend_is_wl(backend));
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return (struct wlr_wl_backend *)backend;
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}
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static int dispatch_events(int fd, uint32_t mask, void *data) {
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struct wlr_wl_backend *wl = data;
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if ((mask & WL_EVENT_HANGUP) || (mask & WL_EVENT_ERROR)) {
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if (mask & WL_EVENT_ERROR) {
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wlr_log(WLR_ERROR, "Failed to read from remote Wayland display");
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}
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wl_display_terminate(wl->local_display);
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return 0;
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}
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int count = 0;
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if (mask & WL_EVENT_READABLE) {
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count = wl_display_dispatch(wl->remote_display);
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}
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if (mask & WL_EVENT_WRITABLE) {
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wl_display_flush(wl->remote_display);
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}
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if (mask == 0) {
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count = wl_display_dispatch_pending(wl->remote_display);
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wl_display_flush(wl->remote_display);
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}
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if (count < 0) {
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wlr_log(WLR_ERROR, "Failed to dispatch remote Wayland display");
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wl_display_terminate(wl->local_display);
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return 0;
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}
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return count;
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}
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static void xdg_wm_base_handle_ping(void *data,
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struct xdg_wm_base *base, uint32_t serial) {
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xdg_wm_base_pong(base, serial);
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}
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static const struct xdg_wm_base_listener xdg_wm_base_listener = {
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xdg_wm_base_handle_ping,
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};
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static void linux_dmabuf_v1_handle_format(void *data,
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struct zwp_linux_dmabuf_v1 *linux_dmabuf_v1, uint32_t format) {
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// Note, this event is deprecated
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struct wlr_wl_backend *wl = data;
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wlr_drm_format_set_add(&wl->linux_dmabuf_v1_formats, format,
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DRM_FORMAT_MOD_INVALID);
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}
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static void linux_dmabuf_v1_handle_modifier(void *data,
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struct zwp_linux_dmabuf_v1 *linux_dmabuf_v1, uint32_t format,
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uint32_t modifier_hi, uint32_t modifier_lo) {
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struct wlr_wl_backend *wl = data;
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uint64_t modifier = ((uint64_t)modifier_hi << 32) | modifier_lo;
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wlr_drm_format_set_add(&wl->linux_dmabuf_v1_formats, format, modifier);
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}
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static const struct zwp_linux_dmabuf_v1_listener linux_dmabuf_v1_listener = {
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.format = linux_dmabuf_v1_handle_format,
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.modifier = linux_dmabuf_v1_handle_modifier,
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};
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static bool device_has_name(const drmDevice *device, const char *name) {
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for (size_t i = 0; i < DRM_NODE_MAX; i++) {
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if (!(device->available_nodes & (1 << i))) {
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continue;
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}
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if (strcmp(device->nodes[i], name) == 0) {
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return true;
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}
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}
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return false;
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}
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static char *get_render_name(const char *name) {
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uint32_t flags = 0;
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int devices_len = drmGetDevices2(flags, NULL, 0);
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if (devices_len < 0) {
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wlr_log(WLR_ERROR, "drmGetDevices2 failed");
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return NULL;
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}
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drmDevice **devices = calloc(devices_len, sizeof(drmDevice *));
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if (devices == NULL) {
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wlr_log_errno(WLR_ERROR, "Allocation failed");
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return NULL;
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}
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devices_len = drmGetDevices2(flags, devices, devices_len);
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if (devices_len < 0) {
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free(devices);
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wlr_log(WLR_ERROR, "drmGetDevices2 failed");
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return NULL;
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}
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const drmDevice *match = NULL;
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for (int i = 0; i < devices_len; i++) {
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if (device_has_name(devices[i], name)) {
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match = devices[i];
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break;
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}
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}
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char *render_name = NULL;
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if (match == NULL) {
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wlr_log(WLR_ERROR, "Cannot find DRM device %s", name);
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} else if (!(match->available_nodes & (1 << DRM_NODE_RENDER))) {
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wlr_log(WLR_ERROR, "DRM device %s has no render node", name);
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} else {
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render_name = strdup(match->nodes[DRM_NODE_RENDER]);
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}
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for (int i = 0; i < devices_len; i++) {
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drmFreeDevice(&devices[i]);
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}
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free(devices);
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return render_name;
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}
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static void legacy_drm_handle_device(void *data, struct wl_drm *drm,
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const char *name) {
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struct wlr_wl_backend *wl = data;
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// TODO: get FD from linux-dmabuf hints instead
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wl->drm_render_name = get_render_name(name);
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}
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static void legacy_drm_handle_format(void *data, struct wl_drm *drm,
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uint32_t format) {
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// This space is intentionally left blank
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}
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static void legacy_drm_handle_authenticated(void *data, struct wl_drm *drm) {
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// This space is intentionally left blank
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}
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static void legacy_drm_handle_capabilities(void *data, struct wl_drm *drm,
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uint32_t caps) {
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// This space is intentionally left blank
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}
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static const struct wl_drm_listener legacy_drm_listener = {
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.device = legacy_drm_handle_device,
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.format = legacy_drm_handle_format,
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.authenticated = legacy_drm_handle_authenticated,
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.capabilities = legacy_drm_handle_capabilities,
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};
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static void registry_global(void *data, struct wl_registry *registry,
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uint32_t name, const char *iface, uint32_t version) {
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struct wlr_wl_backend *wl = data;
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wlr_log(WLR_DEBUG, "Remote wayland global: %s v%" PRIu32, iface, version);
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if (strcmp(iface, wl_compositor_interface.name) == 0) {
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wl->compositor = wl_registry_bind(registry, name,
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&wl_compositor_interface, 4);
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} else if (strcmp(iface, wl_seat_interface.name) == 0) {
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struct wl_seat *wl_seat = wl_registry_bind(registry, name,
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&wl_seat_interface, 5);
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if (!create_wl_seat(wl_seat, wl)) {
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wl_seat_destroy(wl_seat);
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}
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} else if (strcmp(iface, xdg_wm_base_interface.name) == 0) {
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wl->xdg_wm_base = wl_registry_bind(registry, name,
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&xdg_wm_base_interface, 1);
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xdg_wm_base_add_listener(wl->xdg_wm_base, &xdg_wm_base_listener, NULL);
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} else if (strcmp(iface, zxdg_decoration_manager_v1_interface.name) == 0) {
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wl->zxdg_decoration_manager_v1 = wl_registry_bind(registry, name,
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&zxdg_decoration_manager_v1_interface, 1);
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} else if (strcmp(iface, zwp_pointer_gestures_v1_interface.name) == 0) {
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wl->zwp_pointer_gestures_v1 = wl_registry_bind(registry, name,
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&zwp_pointer_gestures_v1_interface, 1);
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} else if (strcmp(iface, wp_presentation_interface.name) == 0) {
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wl->presentation = wl_registry_bind(registry, name,
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&wp_presentation_interface, 1);
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} else if (strcmp(iface, zwp_tablet_manager_v2_interface.name) == 0) {
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wl->tablet_manager = wl_registry_bind(registry, name,
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&zwp_tablet_manager_v2_interface, 1);
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} else if (strcmp(iface, zwp_linux_dmabuf_v1_interface.name) == 0 &&
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version >= 3) {
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wl->zwp_linux_dmabuf_v1 = wl_registry_bind(registry, name,
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&zwp_linux_dmabuf_v1_interface, 3);
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zwp_linux_dmabuf_v1_add_listener(wl->zwp_linux_dmabuf_v1,
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&linux_dmabuf_v1_listener, wl);
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} else if (strcmp(iface, zwp_relative_pointer_manager_v1_interface.name) == 0) {
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wl->zwp_relative_pointer_manager_v1 = wl_registry_bind(registry, name,
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&zwp_relative_pointer_manager_v1_interface, 1);
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} else if (strcmp(iface, wl_drm_interface.name) == 0) {
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wl->legacy_drm = wl_registry_bind(registry, name, &wl_drm_interface, 1);
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wl_drm_add_listener(wl->legacy_drm, &legacy_drm_listener, wl);
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}
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}
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static void registry_global_remove(void *data, struct wl_registry *registry,
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uint32_t name) {
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// TODO
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}
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static const struct wl_registry_listener registry_listener = {
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.global = registry_global,
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.global_remove = registry_global_remove
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};
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/*
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* Initializes the wayland backend. Opens a connection to a remote wayland
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* compositor and creates surfaces for each output, then registers globals on
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* the specified display.
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*/
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static bool backend_start(struct wlr_backend *backend) {
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struct wlr_wl_backend *wl = get_wl_backend_from_backend(backend);
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wlr_log(WLR_INFO, "Initializating wayland backend");
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wl->started = true;
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struct wlr_wl_seat *seat;
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wl_list_for_each(seat, &wl->seats, link) {
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if (seat->keyboard) {
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create_wl_keyboard(seat);
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}
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if (wl->tablet_manager) {
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wl_add_tablet_seat(wl->tablet_manager, seat);
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}
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}
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for (size_t i = 0; i < wl->requested_outputs; ++i) {
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wlr_wl_output_create(&wl->backend);
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}
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return true;
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}
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static void backend_destroy(struct wlr_backend *backend) {
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if (!backend) {
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return;
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}
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struct wlr_wl_backend *wl = get_wl_backend_from_backend(backend);
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struct wlr_wl_output *output, *tmp_output;
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wl_list_for_each_safe(output, tmp_output, &wl->outputs, link) {
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wlr_output_destroy(&output->wlr_output);
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}
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struct wlr_input_device *input_device, *tmp_input_device;
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wl_list_for_each_safe(input_device, tmp_input_device, &wl->devices, link) {
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wlr_input_device_destroy(input_device);
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}
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wlr_signal_emit_safe(&wl->backend.events.destroy, &wl->backend);
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wl_list_remove(&wl->local_display_destroy.link);
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wl_event_source_remove(wl->remote_display_src);
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wlr_renderer_destroy(wl->renderer);
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wlr_allocator_destroy(wl->allocator);
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close(wl->drm_fd);
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wlr_drm_format_set_finish(&wl->linux_dmabuf_v1_formats);
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struct wlr_wl_buffer *buffer, *tmp_buffer;
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wl_list_for_each_safe(buffer, tmp_buffer, &wl->buffers, link) {
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destroy_wl_buffer(buffer);
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}
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destroy_wl_seats(wl);
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if (wl->zxdg_decoration_manager_v1) {
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zxdg_decoration_manager_v1_destroy(wl->zxdg_decoration_manager_v1);
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}
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if (wl->zwp_pointer_gestures_v1) {
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zwp_pointer_gestures_v1_destroy(wl->zwp_pointer_gestures_v1);
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}
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if (wl->presentation) {
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wp_presentation_destroy(wl->presentation);
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}
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if (wl->zwp_linux_dmabuf_v1) {
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zwp_linux_dmabuf_v1_destroy(wl->zwp_linux_dmabuf_v1);
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}
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if (wl->zwp_relative_pointer_manager_v1) {
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zwp_relative_pointer_manager_v1_destroy(wl->zwp_relative_pointer_manager_v1);
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}
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free(wl->drm_render_name);
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xdg_wm_base_destroy(wl->xdg_wm_base);
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wl_compositor_destroy(wl->compositor);
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wl_registry_destroy(wl->registry);
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wl_display_flush(wl->remote_display);
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wl_display_disconnect(wl->remote_display);
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free(wl);
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}
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static struct wlr_renderer *backend_get_renderer(struct wlr_backend *backend) {
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struct wlr_wl_backend *wl = get_wl_backend_from_backend(backend);
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return wl->renderer;
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}
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static int backend_get_drm_fd(struct wlr_backend *backend) {
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struct wlr_wl_backend *wl = get_wl_backend_from_backend(backend);
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return wl->drm_fd;
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}
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static const struct wlr_backend_impl backend_impl = {
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.start = backend_start,
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.destroy = backend_destroy,
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.get_renderer = backend_get_renderer,
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.get_drm_fd = backend_get_drm_fd,
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};
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bool wlr_backend_is_wl(struct wlr_backend *b) {
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return b->impl == &backend_impl;
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}
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static void handle_display_destroy(struct wl_listener *listener, void *data) {
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struct wlr_wl_backend *wl =
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wl_container_of(listener, wl, local_display_destroy);
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backend_destroy(&wl->backend);
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}
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struct wlr_backend *wlr_wl_backend_create(struct wl_display *display,
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const char *remote) {
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wlr_log(WLR_INFO, "Creating wayland backend");
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struct wlr_wl_backend *wl = calloc(1, sizeof(*wl));
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if (!wl) {
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wlr_log_errno(WLR_ERROR, "Allocation failed");
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return NULL;
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}
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wlr_backend_init(&wl->backend, &backend_impl);
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wl->local_display = display;
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wl_list_init(&wl->devices);
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wl_list_init(&wl->outputs);
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wl_list_init(&wl->seats);
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wl_list_init(&wl->buffers);
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wl->remote_display = wl_display_connect(remote);
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if (!wl->remote_display) {
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wlr_log_errno(WLR_ERROR, "Could not connect to remote display");
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goto error_wl;
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}
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wl->registry = wl_display_get_registry(wl->remote_display);
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if (!wl->registry) {
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wlr_log_errno(WLR_ERROR, "Could not obtain reference to remote registry");
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goto error_display;
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}
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wl_registry_add_listener(wl->registry, ®istry_listener, wl);
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wl_display_roundtrip(wl->remote_display); // get globals
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wl_display_roundtrip(wl->remote_display); // get linux-dmabuf formats
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if (!wl->compositor) {
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wlr_log(WLR_ERROR,
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"Remote Wayland compositor does not support wl_compositor");
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goto error_registry;
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}
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if (!wl->xdg_wm_base) {
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wlr_log(WLR_ERROR,
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"Remote Wayland compositor does not support xdg-shell");
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goto error_registry;
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}
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if (!wl->drm_render_name) {
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wlr_log(WLR_ERROR, "Failed to get DRM render node from remote Wayland "
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"compositor wl_drm interface");
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goto error_registry;
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}
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struct wl_event_loop *loop = wl_display_get_event_loop(wl->local_display);
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int fd = wl_display_get_fd(wl->remote_display);
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wl->remote_display_src = wl_event_loop_add_fd(loop, fd, WL_EVENT_READABLE,
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dispatch_events, wl);
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if (!wl->remote_display_src) {
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wlr_log(WLR_ERROR, "Failed to create event source");
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goto error_registry;
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}
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wl_event_source_check(wl->remote_display_src);
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wlr_log(WLR_DEBUG, "Opening DRM render node %s", wl->drm_render_name);
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wl->drm_fd = open(wl->drm_render_name, O_RDWR | O_NONBLOCK | O_CLOEXEC);
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if (wl->drm_fd < 0) {
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wlr_log_errno(WLR_ERROR, "Failed to open DRM render node %s",
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wl->drm_render_name);
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goto error_remote_display_src;
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}
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int drm_fd = fcntl(wl->drm_fd, F_DUPFD_CLOEXEC, 0);
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if (drm_fd < 0) {
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wlr_log(WLR_ERROR, "fcntl(F_DUPFD_CLOEXEC) failed");
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goto error_drm_fd;
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}
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struct wlr_gbm_allocator *gbm_alloc = wlr_gbm_allocator_create(drm_fd);
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if (gbm_alloc == NULL) {
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wlr_log(WLR_ERROR, "Failed to create GBM allocator");
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close(drm_fd);
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goto error_drm_fd;
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}
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wl->allocator = &gbm_alloc->base;
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wl->renderer = wlr_renderer_autocreate(&wl->backend);
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if (wl->renderer == NULL) {
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wlr_log(WLR_ERROR, "Failed to create renderer");
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goto error_allocator;
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}
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uint32_t fmt = DRM_FORMAT_ARGB8888;
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const struct wlr_drm_format *remote_format =
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wlr_drm_format_set_get(&wl->linux_dmabuf_v1_formats, fmt);
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if (remote_format == NULL) {
|
|
wlr_log(WLR_ERROR, "Remote compositor doesn't support format "
|
|
"0x%"PRIX32" via linux-dmabuf-unstable-v1", fmt);
|
|
goto error_renderer;
|
|
}
|
|
|
|
const struct wlr_drm_format_set *render_formats =
|
|
wlr_renderer_get_dmabuf_render_formats(wl->renderer);
|
|
if (render_formats == NULL) {
|
|
wlr_log(WLR_ERROR, "Failed to get available DMA-BUF formats from renderer");
|
|
goto error_renderer;
|
|
}
|
|
const struct wlr_drm_format *render_format =
|
|
wlr_drm_format_set_get(render_formats, fmt);
|
|
if (render_format == NULL) {
|
|
wlr_log(WLR_ERROR, "Renderer doesn't support DRM format 0x%"PRIX32, fmt);
|
|
goto error_renderer;
|
|
}
|
|
|
|
wl->format = wlr_drm_format_intersect(remote_format, render_format);
|
|
if (wl->format == NULL) {
|
|
wlr_log(WLR_ERROR, "Failed to intersect remote and render modifiers "
|
|
"for format 0x%"PRIX32, fmt);
|
|
goto error_renderer;
|
|
}
|
|
|
|
wl->local_display_destroy.notify = handle_display_destroy;
|
|
wl_display_add_destroy_listener(display, &wl->local_display_destroy);
|
|
|
|
return &wl->backend;
|
|
|
|
error_renderer:
|
|
wlr_renderer_destroy(wl->renderer);
|
|
error_allocator:
|
|
wlr_allocator_destroy(wl->allocator);
|
|
error_drm_fd:
|
|
close(wl->drm_fd);
|
|
error_remote_display_src:
|
|
wl_event_source_remove(wl->remote_display_src);
|
|
error_registry:
|
|
free(wl->drm_render_name);
|
|
if (wl->compositor) {
|
|
wl_compositor_destroy(wl->compositor);
|
|
}
|
|
if (wl->xdg_wm_base) {
|
|
xdg_wm_base_destroy(wl->xdg_wm_base);
|
|
}
|
|
wl_registry_destroy(wl->registry);
|
|
error_display:
|
|
wl_display_disconnect(wl->remote_display);
|
|
error_wl:
|
|
free(wl);
|
|
return NULL;
|
|
}
|
|
|
|
struct wl_display *wlr_wl_backend_get_remote_display(struct wlr_backend *backend) {
|
|
struct wlr_wl_backend *wl = get_wl_backend_from_backend(backend);
|
|
return wl->remote_display;
|
|
}
|