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output-layer: add feedback event

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This commit is contained in:
Simon Ser 2023-02-06 17:54:13 +01:00
parent 4d6fbb2289
commit e1335a792a
2 changed files with 18 additions and 0 deletions
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17
include/wlr/types/wlr_output_layer.h
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@ -9,6 +9,7 @@
#ifndef WLR_TYPES_WLR_OUTPUT_LAYER_H
#define WLR_TYPES_WLR_OUTPUT_LAYER_H
#include <wlr/render/drm_format_set.h>
#include <wlr/types/wlr_output.h>
#include <wlr/util/addon.h>
@ -36,6 +37,10 @@ struct wlr_output_layer {
struct wl_list link; // wlr_output.layers
struct wlr_addon_set addons;
struct {
struct wl_signal feedback; // struct wlr_output_layer_feedback_event
} events;
void *data;
};
@ -56,6 +61,18 @@ struct wlr_output_layer_state {
bool accepted;
};
/**
* Feedback for an output layer.
*
* After an output commit, if the backend is not able to display a layer, it
* can send feedback events. These events can be used to re-allocate the
* layer's buffers so that they have a higher chance to get displayed.
*/
struct wlr_output_layer_feedback_event {
dev_t target_device;
const struct wlr_drm_format_set *formats;
};
/**
* Create a new output layer.
*/

1
types/wlr_output_layer.c
View file

@ -9,6 +9,7 @@ struct wlr_output_layer *wlr_output_layer_create(struct wlr_output *output) {
wl_list_insert(&output->layers, &layer->link);
wlr_addon_set_init(&layer->addons);
wl_signal_init(&layer->events.feedback);
return layer;
}