Drew DeVault
6 years ago
committed by
GitHub
commit
24a48d4858
@ -0,0 +1,59 @@
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/*
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* This an unstable interface of wlroots. No guarantees are made regarding the
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* future consistency of this API.
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*/
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#ifndef WLR_USE_UNSTABLE
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#error "Add -DWLR_USE_UNSTABLE to enable unstable wlroots features"
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#endif
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#ifndef WLR_TYPES_WLR_PRESENTATION_TIME_H
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#define WLR_TYPES_WLR_PRESENTATION_TIME_H
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#include <stdbool.h>
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#include <stddef.h>
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#include <time.h>
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#include <wayland-server.h>
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struct wlr_presentation {
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struct wl_global *global;
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struct wl_list resources; // wl_resource_get_link
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struct wl_list feedbacks; // wlr_presentation_feedback::link
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clockid_t clock;
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struct {
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struct wl_signal destroy;
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} events;
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struct wl_listener display_destroy;
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};
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struct wlr_presentation_feedback {
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struct wl_resource *resource;
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struct wlr_presentation *presentation;
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struct wlr_surface *surface;
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bool committed;
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struct wl_list link; // wlr_presentation::feedbacks
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struct wl_listener surface_commit;
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struct wl_listener surface_destroy;
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};
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struct wlr_presentation_event {
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struct wlr_output *output;
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uint64_t tv_sec;
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uint32_t tv_nsec;
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uint32_t refresh;
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uint64_t seq;
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uint32_t flags; // wp_presentation_feedback_kind
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};
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struct wlr_backend;
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struct wlr_presentation *wlr_presentation_create(struct wl_display *display,
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struct wlr_backend *backend);
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void wlr_presentation_destroy(struct wlr_presentation *presentation);
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void wlr_presentation_send_surface_presented(
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struct wlr_presentation *presentation, struct wlr_surface *surface,
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struct wlr_presentation_event *event);
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#endif
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@ -0,0 +1,223 @@
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#define _POSIX_C_SOURCE 199309L
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#include <assert.h>
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#include <stdlib.h>
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#include <wlr/types/wlr_presentation_time.h>
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#include <wlr/types/wlr_surface.h>
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#include <wlr/backend.h>
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#include "presentation-time-protocol.h"
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#include "util/signal.h"
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#define PRESENTATION_VERSION 1
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static struct wlr_presentation_feedback *presentation_feedback_from_resource(
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struct wl_resource *resource) {
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assert(wl_resource_instance_of(resource,
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&wp_presentation_feedback_interface, NULL));
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return wl_resource_get_user_data(resource);
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}
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static void feedback_handle_resource_destroy(struct wl_resource *resource) {
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struct wlr_presentation_feedback *feedback =
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presentation_feedback_from_resource(resource);
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wl_list_remove(&feedback->surface_commit.link);
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wl_list_remove(&feedback->surface_destroy.link);
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wl_list_remove(&feedback->link);
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free(feedback);
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}
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// Destroys the feedback
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static void feedback_send_presented(struct wlr_presentation_feedback *feedback,
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struct wlr_presentation_event *event) {
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struct wl_client *client = wl_resource_get_client(feedback->resource);
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struct wl_resource *resource;
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wl_resource_for_each(resource, &event->output->resources) {
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if (wl_resource_get_client(resource) == client) {
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wp_presentation_feedback_send_sync_output(feedback->resource,
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resource);
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}
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}
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uint32_t tv_sec_hi = event->tv_sec >> 32;
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uint32_t tv_sec_lo = event->tv_sec & 0xFFFFFFFF;
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uint32_t seq_hi = event->seq >> 32;
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uint32_t seq_lo = event->seq & 0xFFFFFFFF;
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wp_presentation_feedback_send_presented(feedback->resource,
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tv_sec_hi, tv_sec_lo, event->tv_nsec, event->refresh,
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seq_hi, seq_lo, event->flags);
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wl_resource_destroy(feedback->resource);
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}
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// Destroys the feedback
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static void feedback_send_discarded(
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struct wlr_presentation_feedback *feedback) {
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wp_presentation_feedback_send_discarded(feedback->resource);
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wl_resource_destroy(feedback->resource);
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}
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static void feedback_handle_surface_commit(struct wl_listener *listener,
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void *data) {
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struct wlr_presentation_feedback *feedback =
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wl_container_of(listener, feedback, surface_commit);
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if (feedback->committed) {
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// The content update has been superseded
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feedback_send_discarded(feedback);
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} else {
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feedback->committed = true;
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}
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}
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static void feedback_handle_surface_destroy(struct wl_listener *listener,
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void *data) {
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struct wlr_presentation_feedback *feedback =
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wl_container_of(listener, feedback, surface_destroy);
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feedback_send_discarded(feedback);
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}
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static const struct wp_presentation_interface presentation_impl;
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static struct wlr_presentation *presentation_from_resource(
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struct wl_resource *resource) {
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assert(wl_resource_instance_of(resource, &wp_presentation_interface,
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&presentation_impl));
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return wl_resource_get_user_data(resource);
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}
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static void presentation_handle_feedback(struct wl_client *client,
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struct wl_resource *resource, struct wl_resource *surface_resource,
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uint32_t id) {
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struct wlr_presentation *presentation =
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presentation_from_resource(resource);
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struct wlr_surface *surface = wlr_surface_from_resource(surface_resource);
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struct wlr_presentation_feedback *feedback =
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calloc(1, sizeof(struct wlr_presentation_feedback));
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if (feedback == NULL) {
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wl_client_post_no_memory(client);
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return;
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}
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uint32_t version = wl_resource_get_version(resource);
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feedback->resource = wl_resource_create(client,
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&wp_presentation_feedback_interface, version, id);
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if (feedback->resource == NULL) {
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free(feedback);
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wl_client_post_no_memory(client);
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return;
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}
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wl_resource_set_implementation(feedback->resource, NULL, feedback,
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feedback_handle_resource_destroy);
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feedback->surface = surface;
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feedback->surface_commit.notify = feedback_handle_surface_commit;
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wl_signal_add(&surface->events.commit, &feedback->surface_commit);
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feedback->surface_destroy.notify = feedback_handle_surface_destroy;
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wl_signal_add(&surface->events.destroy, &feedback->surface_destroy);
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wl_list_insert(&presentation->feedbacks, &feedback->link);
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}
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static void presentation_handle_destroy(struct wl_client *client,
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struct wl_resource *resource) {
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wl_resource_destroy(resource);
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}
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static const struct wp_presentation_interface presentation_impl = {
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.feedback = presentation_handle_feedback,
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.destroy = presentation_handle_destroy,
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};
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static void presentation_handle_resource_destroy(struct wl_resource *resource) {
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wl_list_remove(wl_resource_get_link(resource));
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}
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static void presentation_bind(struct wl_client *client, void *data,
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uint32_t version, uint32_t id) {
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struct wlr_presentation *presentation = data;
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struct wl_resource *resource = wl_resource_create(client,
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&wp_presentation_interface, version, id);
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if (resource == NULL) {
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wl_client_post_no_memory(client);
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return;
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}
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wl_resource_set_implementation(resource, &presentation_impl, presentation,
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presentation_handle_resource_destroy);
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wl_list_insert(&presentation->resources, wl_resource_get_link(resource));
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wp_presentation_send_clock_id(resource, (uint32_t)presentation->clock);
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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_presentation *presentation =
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wl_container_of(listener, presentation, display_destroy);
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wlr_presentation_destroy(presentation);
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}
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struct wlr_presentation *wlr_presentation_create(struct wl_display *display,
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struct wlr_backend *backend) {
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struct wlr_presentation *presentation =
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calloc(1, sizeof(struct wlr_presentation));
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if (presentation == NULL) {
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return NULL;
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}
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presentation->global = wl_global_create(display, &wp_presentation_interface,
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PRESENTATION_VERSION, presentation, presentation_bind);
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if (presentation->global == NULL) {
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free(presentation);
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return NULL;
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}
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presentation->clock = wlr_backend_get_presentation_clock(backend);
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wl_list_init(&presentation->resources);
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wl_list_init(&presentation->feedbacks);
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wl_signal_init(&presentation->events.destroy);
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presentation->display_destroy.notify = handle_display_destroy;
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wl_display_add_destroy_listener(display, &presentation->display_destroy);
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return presentation;
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}
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void wlr_presentation_destroy(struct wlr_presentation *presentation) {
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if (presentation == NULL) {
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return;
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}
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wlr_signal_emit_safe(&presentation->events.destroy, presentation);
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wl_global_destroy(presentation->global);
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struct wlr_presentation_feedback *feedback, *feedback_tmp;
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wl_list_for_each_safe(feedback, feedback_tmp, &presentation->feedbacks,
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link) {
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wl_resource_destroy(feedback->resource);
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}
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struct wl_resource *resource, *resource_tmp;
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wl_resource_for_each_safe(resource, resource_tmp,
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&presentation->resources) {
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wl_resource_destroy(resource);
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}
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wl_list_remove(&presentation->display_destroy.link);
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free(presentation);
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}
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void wlr_presentation_send_surface_presented(
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struct wlr_presentation *presentation, struct wlr_surface *surface,
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struct wlr_presentation_event *event) {
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// TODO: maybe use a hashtable to optimize this function
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struct wlr_presentation_feedback *feedback, *feedback_tmp;
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wl_list_for_each_safe(feedback, feedback_tmp,
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&presentation->feedbacks, link) {
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if (feedback->surface == surface && feedback->committed) {
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feedback_send_presented(feedback, event);
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}
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}
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}
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