mirror of
https://github.com/hyprwm/wlroots-hyprland.git
synced 2024-11-25 06:05:58 +01:00
252 lines
7.4 KiB
C
252 lines
7.4 KiB
C
#define _POSIX_C_SOURCE 200112L
|
|
#include <assert.h>
|
|
#include <stdbool.h>
|
|
#include <stdlib.h>
|
|
#include <time.h>
|
|
#include <wlr/backend/interface.h>
|
|
#include <wlr/backend/session.h>
|
|
#include <wlr/types/wlr_buffer.h>
|
|
#include <wlr/util/log.h>
|
|
#include "backend/backend.h"
|
|
#include "backend/multi.h"
|
|
#include "util/signal.h"
|
|
|
|
struct subbackend_state {
|
|
struct wlr_backend *backend;
|
|
struct wlr_backend *container;
|
|
struct wl_listener new_input;
|
|
struct wl_listener new_output;
|
|
struct wl_listener destroy;
|
|
struct wl_list link;
|
|
};
|
|
|
|
static struct wlr_multi_backend *multi_backend_from_backend(
|
|
struct wlr_backend *wlr_backend) {
|
|
assert(wlr_backend_is_multi(wlr_backend));
|
|
return (struct wlr_multi_backend *)wlr_backend;
|
|
}
|
|
|
|
static bool multi_backend_start(struct wlr_backend *wlr_backend) {
|
|
struct wlr_multi_backend *backend = multi_backend_from_backend(wlr_backend);
|
|
struct subbackend_state *sub;
|
|
wl_list_for_each(sub, &backend->backends, link) {
|
|
if (!wlr_backend_start(sub->backend)) {
|
|
wlr_log(WLR_ERROR, "Failed to initialize backend.");
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
static void subbackend_state_destroy(struct subbackend_state *sub) {
|
|
wl_list_remove(&sub->new_input.link);
|
|
wl_list_remove(&sub->new_output.link);
|
|
wl_list_remove(&sub->destroy.link);
|
|
wl_list_remove(&sub->link);
|
|
free(sub);
|
|
}
|
|
|
|
static void multi_backend_destroy(struct wlr_backend *wlr_backend) {
|
|
struct wlr_multi_backend *backend = multi_backend_from_backend(wlr_backend);
|
|
|
|
wl_list_remove(&backend->display_destroy.link);
|
|
|
|
// Some backends may depend on other backends, ie. destroying a backend may
|
|
// also destroy other backends
|
|
while (!wl_list_empty(&backend->backends)) {
|
|
struct subbackend_state *sub =
|
|
wl_container_of(backend->backends.next, sub, link);
|
|
wlr_backend_destroy(sub->backend);
|
|
}
|
|
|
|
// Destroy this backend only after removing all sub-backends
|
|
wlr_backend_finish(wlr_backend);
|
|
free(backend);
|
|
}
|
|
|
|
static struct wlr_session *multi_backend_get_session(
|
|
struct wlr_backend *_backend) {
|
|
struct wlr_multi_backend *backend = multi_backend_from_backend(_backend);
|
|
return backend->session;
|
|
}
|
|
|
|
static clockid_t multi_backend_get_presentation_clock(
|
|
struct wlr_backend *backend) {
|
|
struct wlr_multi_backend *multi = multi_backend_from_backend(backend);
|
|
|
|
struct subbackend_state *sub;
|
|
wl_list_for_each(sub, &multi->backends, link) {
|
|
if (sub->backend->impl->get_presentation_clock) {
|
|
return wlr_backend_get_presentation_clock(sub->backend);
|
|
}
|
|
}
|
|
|
|
return CLOCK_MONOTONIC;
|
|
}
|
|
|
|
static int multi_backend_get_drm_fd(struct wlr_backend *backend) {
|
|
struct wlr_multi_backend *multi = multi_backend_from_backend(backend);
|
|
|
|
struct subbackend_state *sub;
|
|
wl_list_for_each(sub, &multi->backends, link) {
|
|
if (sub->backend->impl->get_drm_fd) {
|
|
return wlr_backend_get_drm_fd(sub->backend);
|
|
}
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
static uint32_t multi_backend_get_buffer_caps(struct wlr_backend *backend) {
|
|
struct wlr_multi_backend *multi = multi_backend_from_backend(backend);
|
|
|
|
if (wl_list_empty(&multi->backends)) {
|
|
return 0;
|
|
}
|
|
|
|
uint32_t caps = WLR_BUFFER_CAP_DATA_PTR | WLR_BUFFER_CAP_DMABUF
|
|
| WLR_BUFFER_CAP_SHM;
|
|
|
|
struct subbackend_state *sub;
|
|
wl_list_for_each(sub, &multi->backends, link) {
|
|
uint32_t backend_caps = backend_get_buffer_caps(sub->backend);
|
|
if (backend_caps != 0) {
|
|
// only count backend capable of presenting a buffer
|
|
caps = caps & backend_caps;
|
|
}
|
|
}
|
|
|
|
return caps;
|
|
}
|
|
|
|
static const struct wlr_backend_impl backend_impl = {
|
|
.start = multi_backend_start,
|
|
.destroy = multi_backend_destroy,
|
|
.get_session = multi_backend_get_session,
|
|
.get_presentation_clock = multi_backend_get_presentation_clock,
|
|
.get_drm_fd = multi_backend_get_drm_fd,
|
|
.get_buffer_caps = multi_backend_get_buffer_caps,
|
|
};
|
|
|
|
static void handle_display_destroy(struct wl_listener *listener, void *data) {
|
|
struct wlr_multi_backend *backend =
|
|
wl_container_of(listener, backend, display_destroy);
|
|
multi_backend_destroy((struct wlr_backend*)backend);
|
|
}
|
|
|
|
struct wlr_backend *wlr_multi_backend_create(struct wl_display *display) {
|
|
struct wlr_multi_backend *backend =
|
|
calloc(1, sizeof(struct wlr_multi_backend));
|
|
if (!backend) {
|
|
wlr_log(WLR_ERROR, "Backend allocation failed");
|
|
return NULL;
|
|
}
|
|
|
|
wl_list_init(&backend->backends);
|
|
wlr_backend_init(&backend->backend, &backend_impl);
|
|
|
|
wl_signal_init(&backend->events.backend_add);
|
|
wl_signal_init(&backend->events.backend_remove);
|
|
|
|
backend->display_destroy.notify = handle_display_destroy;
|
|
wl_display_add_destroy_listener(display, &backend->display_destroy);
|
|
|
|
return &backend->backend;
|
|
}
|
|
|
|
bool wlr_backend_is_multi(struct wlr_backend *b) {
|
|
return b->impl == &backend_impl;
|
|
}
|
|
|
|
static void new_input_reemit(struct wl_listener *listener, void *data) {
|
|
struct subbackend_state *state = wl_container_of(listener,
|
|
state, new_input);
|
|
wlr_signal_emit_safe(&state->container->events.new_input, data);
|
|
}
|
|
|
|
static void new_output_reemit(struct wl_listener *listener, void *data) {
|
|
struct subbackend_state *state = wl_container_of(listener,
|
|
state, new_output);
|
|
wlr_signal_emit_safe(&state->container->events.new_output, data);
|
|
}
|
|
|
|
static void handle_subbackend_destroy(struct wl_listener *listener,
|
|
void *data) {
|
|
struct subbackend_state *state = wl_container_of(listener, state, destroy);
|
|
subbackend_state_destroy(state);
|
|
}
|
|
|
|
static struct subbackend_state *multi_backend_get_subbackend(struct wlr_multi_backend *multi,
|
|
struct wlr_backend *backend) {
|
|
struct subbackend_state *sub = NULL;
|
|
wl_list_for_each(sub, &multi->backends, link) {
|
|
if (sub->backend == backend) {
|
|
return sub;
|
|
}
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
bool wlr_multi_backend_add(struct wlr_backend *_multi,
|
|
struct wlr_backend *backend) {
|
|
assert(_multi && backend);
|
|
assert(_multi != backend);
|
|
|
|
struct wlr_multi_backend *multi = multi_backend_from_backend(_multi);
|
|
|
|
if (multi_backend_get_subbackend(multi, backend)) {
|
|
// already added
|
|
return true;
|
|
}
|
|
|
|
struct subbackend_state *sub = calloc(1, sizeof(struct subbackend_state));
|
|
if (sub == NULL) {
|
|
wlr_log(WLR_ERROR, "Could not add backend: allocation failed");
|
|
return false;
|
|
}
|
|
wl_list_insert(multi->backends.prev, &sub->link);
|
|
|
|
sub->backend = backend;
|
|
sub->container = &multi->backend;
|
|
|
|
wl_signal_add(&backend->events.destroy, &sub->destroy);
|
|
sub->destroy.notify = handle_subbackend_destroy;
|
|
|
|
wl_signal_add(&backend->events.new_input, &sub->new_input);
|
|
sub->new_input.notify = new_input_reemit;
|
|
|
|
wl_signal_add(&backend->events.new_output, &sub->new_output);
|
|
sub->new_output.notify = new_output_reemit;
|
|
|
|
wlr_signal_emit_safe(&multi->events.backend_add, backend);
|
|
return true;
|
|
}
|
|
|
|
void wlr_multi_backend_remove(struct wlr_backend *_multi,
|
|
struct wlr_backend *backend) {
|
|
struct wlr_multi_backend *multi = multi_backend_from_backend(_multi);
|
|
|
|
struct subbackend_state *sub =
|
|
multi_backend_get_subbackend(multi, backend);
|
|
|
|
if (sub) {
|
|
wlr_signal_emit_safe(&multi->events.backend_remove, backend);
|
|
subbackend_state_destroy(sub);
|
|
}
|
|
}
|
|
|
|
bool wlr_multi_is_empty(struct wlr_backend *_backend) {
|
|
assert(wlr_backend_is_multi(_backend));
|
|
struct wlr_multi_backend *backend = (struct wlr_multi_backend *)_backend;
|
|
return wl_list_length(&backend->backends) < 1;
|
|
}
|
|
|
|
void wlr_multi_for_each_backend(struct wlr_backend *_backend,
|
|
void (*callback)(struct wlr_backend *backend, void *data), void *data) {
|
|
assert(wlr_backend_is_multi(_backend));
|
|
struct wlr_multi_backend *backend = (struct wlr_multi_backend *)_backend;
|
|
struct subbackend_state *sub;
|
|
wl_list_for_each(sub, &backend->backends, link) {
|
|
callback(sub->backend, data);
|
|
}
|
|
}
|