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linux-dmabuf-v1: implement wlr_buffer 

This allows the DMA-BUF wl_buffer objects to be used directly as
wlr_buffers, without having to use wlr_client_buffer_import.
This commit is contained in:
Simon Ser 2021-04-12 14:09:27 +02:00
parent 6f69e2f12e
commit 6f39574ff5
2 changed files with 53 additions and 7 deletions
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7
include/wlr/types/wlr_linux_dmabuf_v1.h
View File

@ -11,11 +11,16 @@
#include <stdint.h>
#include <wayland-server-core.h>
#include <wlr/types/wlr_buffer.h>
#include <wlr/render/dmabuf.h>
struct wlr_dmabuf_v1_buffer {
struct wl_resource *resource;
struct wlr_buffer base;
struct wl_resource *resource; // can be NULL if the client destroyed it
struct wlr_dmabuf_attributes attributes;
struct wl_listener release;
};
/**

53
types/wlr_linux_dmabuf_v1.c
View File

@ -18,13 +18,13 @@ static void buffer_handle_destroy(struct wl_client *client,
wl_resource_destroy(resource);
}
static const struct wl_buffer_interface buffer_impl = {
static const struct wl_buffer_interface wl_buffer_impl = {
.destroy = buffer_handle_destroy,
};
bool wlr_dmabuf_v1_resource_is_buffer(struct wl_resource *resource) {
if (!wl_resource_instance_of(resource, &wl_buffer_interface,
&buffer_impl)) {
&wl_buffer_impl)) {
return false;
}
return wl_resource_get_user_data(resource) != NULL;
@ -33,15 +33,50 @@ bool wlr_dmabuf_v1_resource_is_buffer(struct wl_resource *resource) {
struct wlr_dmabuf_v1_buffer *wlr_dmabuf_v1_buffer_from_buffer_resource(
struct wl_resource *resource) {
assert(wl_resource_instance_of(resource, &wl_buffer_interface,
&buffer_impl));
&wl_buffer_impl));
return wl_resource_get_user_data(resource);
}
static void linux_dmabuf_buffer_destroy(struct wlr_dmabuf_v1_buffer *buffer) {
static const struct wlr_buffer_impl buffer_impl;
static struct wlr_dmabuf_v1_buffer *dmabuf_v1_buffer_from_buffer(
struct wlr_buffer *buffer) {
assert(buffer->impl == &buffer_impl);
return (struct wlr_dmabuf_v1_buffer *)buffer;
}
static void buffer_destroy(struct wlr_buffer *wlr_buffer) {
struct wlr_dmabuf_v1_buffer *buffer =
dmabuf_v1_buffer_from_buffer(wlr_buffer);
if (buffer->resource != NULL) {
wl_resource_set_user_data(buffer->resource, NULL);
}
wlr_dmabuf_attributes_finish(&buffer->attributes);
wl_list_remove(&buffer->release.link);
free(buffer);
}
static bool buffer_get_dmabuf(struct wlr_buffer *wlr_buffer,
struct wlr_dmabuf_attributes *attribs) {
struct wlr_dmabuf_v1_buffer *buffer =
dmabuf_v1_buffer_from_buffer(wlr_buffer);
memcpy(attribs, &buffer->attributes, sizeof(buffer->attributes));
return true;
}
static const struct wlr_buffer_impl buffer_impl = {
.destroy = buffer_destroy,
.get_dmabuf = buffer_get_dmabuf,
};
static void buffer_handle_release(struct wl_listener *listener, void *data) {
struct wlr_dmabuf_v1_buffer *buffer =
wl_container_of(listener, buffer, release);
if (buffer->resource != NULL) {
wl_buffer_send_release(buffer->resource);
}
}
static const struct zwp_linux_buffer_params_v1_interface buffer_params_impl;
static struct wlr_linux_buffer_params_v1 *params_from_resource(
@ -110,7 +145,8 @@ static void params_add(struct wl_client *client,
static void buffer_handle_resource_destroy(struct wl_resource *buffer_resource) {
struct wlr_dmabuf_v1_buffer *buffer =
wlr_dmabuf_v1_buffer_from_buffer_resource(buffer_resource);
linux_dmabuf_buffer_destroy(buffer);
buffer->resource = NULL;
wlr_buffer_drop(&buffer->base);
}
static bool check_import_dmabuf(struct wlr_linux_dmabuf_v1 *linux_dmabuf,
@ -247,19 +283,24 @@ static void params_create_common(struct wl_resource *params_resource,
wl_resource_post_no_memory(params_resource);
goto err_failed;
}
wlr_buffer_init(&buffer->base, &buffer_impl, attribs.width, attribs.height);
struct wl_client *client = wl_resource_get_client(params_resource);
buffer->resource = wl_resource_create(client, &wl_buffer_interface,
1, buffer_id);
if (!buffer->resource) {
wl_resource_post_no_memory(params_resource);
free(buffer);
goto err_failed;
}
wl_resource_set_implementation(buffer->resource,
&buffer_impl, buffer, buffer_handle_resource_destroy);
&wl_buffer_impl, buffer, buffer_handle_resource_destroy);
buffer->attributes = attribs;
buffer->release.notify = buffer_handle_release;
wl_signal_add(&buffer->base.events.release, &buffer->release);
/* send 'created' event when the request is not for an immediate
* import, that is buffer_id is zero */
if (buffer_id == 0) {