140 lines
4.1 KiB
C
140 lines
4.1 KiB
C
#include <stdbool.h>
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#include <stdlib.h>
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#include <wlr/backend/interface.h>
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#include <wlr/backend/udev.h>
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#include <wlr/backend/session.h>
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#include <wlr/util/log.h>
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#include "backend/multi.h"
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struct subbackend_state {
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struct wlr_backend *backend;
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struct wlr_backend *container;
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struct wl_listener input_add;
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struct wl_listener input_remove;
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struct wl_listener output_add;
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struct wl_listener output_remove;
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};
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static bool multi_backend_init(struct wlr_backend_state *state) {
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for (size_t i = 0; i < state->backends->length; ++i) {
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struct subbackend_state *sub = state->backends->items[i];
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if (!wlr_backend_init(sub->backend)) {
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wlr_log(L_ERROR, "Failed to initialize backend %zd", i);
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return false;
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}
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}
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return true;
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}
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static void multi_backend_destroy(struct wlr_backend_state *state) {
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for (size_t i = 0; i < state->backends->length; ++i) {
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struct subbackend_state *sub = state->backends->items[i];
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wlr_backend_destroy(sub->backend);
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free(sub);
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}
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list_free(state->backends);
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wlr_session_finish(state->session);
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wlr_udev_destroy(state->udev);
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free(state);
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}
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static struct wlr_egl *multi_backend_get_egl(struct wlr_backend_state *state) {
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for (size_t i = 0; i < state->backends->length; ++i) {
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struct subbackend_state *sub = state->backends->items[i];
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struct wlr_egl *egl = wlr_backend_get_egl(sub->backend);
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if (egl) {
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return egl;
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}
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}
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return NULL;
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}
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struct wlr_backend_impl backend_impl = {
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.init = multi_backend_init,
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.destroy = multi_backend_destroy,
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.get_egl = multi_backend_get_egl
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};
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struct wlr_backend *wlr_multi_backend_create(struct wlr_session *session,
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struct wlr_udev *udev) {
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struct wlr_backend_state *state =
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calloc(1, sizeof(struct wlr_backend_state));
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if (!state) {
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wlr_log(L_ERROR, "Backend allocation failed");
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return NULL;
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}
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state->backends = list_create();
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if (!state->backends) {
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free(state);
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wlr_log(L_ERROR, "Backend allocation failed");
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return NULL;
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}
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struct wlr_backend *backend = wlr_backend_create(&backend_impl, state);
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state->backend = backend;
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state->session = session;
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state->udev = udev;
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return backend;
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}
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bool wlr_backend_is_multi(struct wlr_backend *b) {
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return b->impl == &backend_impl;
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}
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static void input_add_reemit(struct wl_listener *listener, void *data) {
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struct subbackend_state *state = wl_container_of(listener,
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state, input_add);
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wl_signal_emit(&state->container->events.input_add, data);
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}
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static void input_remove_reemit(struct wl_listener *listener, void *data) {
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struct subbackend_state *state = wl_container_of(listener,
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state, input_remove);
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wl_signal_emit(&state->container->events.input_remove, data);
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}
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static void output_add_reemit(struct wl_listener *listener, void *data) {
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struct subbackend_state *state = wl_container_of(listener,
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state, output_add);
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wl_signal_emit(&state->container->events.output_add, data);
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}
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static void output_remove_reemit(struct wl_listener *listener, void *data) {
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struct subbackend_state *state = wl_container_of(listener,
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state, output_remove);
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wl_signal_emit(&state->container->events.output_remove, data);
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}
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void wlr_multi_backend_add(struct wlr_backend *multi,
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struct wlr_backend *backend) {
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struct subbackend_state *sub = calloc(1, sizeof(struct subbackend_state));
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sub->backend = backend;
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sub->container = multi;
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sub->input_add.notify = input_add_reemit;
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sub->input_remove.notify = input_remove_reemit;
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sub->output_add.notify = output_add_reemit;
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sub->output_remove.notify = output_remove_reemit;
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wl_list_init(&sub->input_add.link);
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wl_list_init(&sub->input_remove.link);
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wl_list_init(&sub->output_add.link);
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wl_list_init(&sub->output_remove.link);
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wl_signal_add(&backend->events.input_add, &sub->input_add);
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wl_signal_add(&backend->events.input_remove, &sub->input_remove);
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wl_signal_add(&backend->events.output_add, &sub->output_add);
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wl_signal_add(&backend->events.output_remove, &sub->output_remove);
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list_add(multi->state->backends, sub);
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}
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struct wlr_session *wlr_multi_get_session(struct wlr_backend *base) {
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if (base->impl != &backend_impl)
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return NULL;
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struct wlr_backend_state *multi = base->state;
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return multi->session;
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}
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