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buffer: add wlr_client_buffer.source 

This stores a weak reference to the source buffer.
This commit is contained in:
Simon Ser 2021-07-09 17:06:28 +02:00 committed by Simon Zeni
parent 0abb67c478
commit a0baba4fa0
2 changed files with 19 additions and 0 deletions
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5
include/wlr/types/wlr_buffer.h
View File

@ -136,10 +136,15 @@ struct wlr_client_buffer {
* client destroys the buffer before it has been released.
*/
struct wlr_texture *texture;
/**
* The buffer this client buffer was created from. NULL if destroyed.
*/
struct wlr_buffer *source;
// private state
struct wl_listener resource_destroy;
struct wl_listener source_destroy;
// If the client buffer has been created from a wl_shm buffer
uint32_t shm_source_format;

14
types/wlr_buffer.c
View File

@ -124,6 +124,7 @@ static struct wlr_client_buffer *client_buffer_from_buffer(
static void client_buffer_destroy(struct wlr_buffer *buffer) {
struct wlr_client_buffer *client_buffer = client_buffer_from_buffer(buffer);
wl_list_remove(&client_buffer->resource_destroy.link);
wl_list_remove(&client_buffer->source_destroy.link);
wlr_texture_destroy(client_buffer->texture);
free(client_buffer);
}
@ -169,6 +170,15 @@ static void client_buffer_resource_handle_destroy(struct wl_listener *listener,
// which case we'll read garbage. We decide to accept this risk.
}
static void client_buffer_handle_source_destroy(struct wl_listener *listener,
void *data) {
struct wlr_client_buffer *client_buffer =
wl_container_of(listener, client_buffer, source_destroy);
wl_list_remove(&client_buffer->source_destroy.link);
wl_list_init(&client_buffer->source_destroy.link);
client_buffer->source = NULL;
}
static bool buffer_is_shm_client_buffer(struct wlr_buffer *buffer);
static struct wlr_shm_client_buffer *shm_client_buffer_from_buffer(
struct wlr_buffer *buffer);
@ -224,11 +234,15 @@ struct wlr_client_buffer *wlr_client_buffer_create(struct wlr_buffer *buffer,
wlr_buffer_init(&client_buffer->base, &client_buffer_impl,
texture->width, texture->height);
client_buffer->resource = resource;
client_buffer->source = buffer;
client_buffer->texture = texture;
wl_resource_add_destroy_listener(resource, &client_buffer->resource_destroy);
client_buffer->resource_destroy.notify = client_buffer_resource_handle_destroy;
wl_signal_add(&buffer->events.destroy, &client_buffer->source_destroy);
client_buffer->source_destroy.notify = client_buffer_handle_source_destroy;
if (buffer_is_shm_client_buffer(buffer)) {
struct wlr_shm_client_buffer *shm_client_buffer =
shm_client_buffer_from_buffer(buffer);