You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
151 lines
4.3 KiB
151 lines
4.3 KiB
/*
|
|
* Copyright 2021 Collabora, Ltd.
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining
|
|
* a copy of this software and associated documentation files (the
|
|
* "Software"), to deal in the Software without restriction, including
|
|
* without limitation the rights to use, copy, modify, merge, publish,
|
|
* distribute, sublicense, and/or sell copies of the Software, and to
|
|
* permit persons to whom the Software is furnished to do so, subject to
|
|
* the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice (including the
|
|
* next paragraph) shall be included in all copies or substantial
|
|
* portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
|
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
|
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
|
|
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
|
|
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
|
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
|
* SOFTWARE.
|
|
*/
|
|
|
|
#include "config.h"
|
|
|
|
#include <libweston/libweston.h>
|
|
#include <assert.h>
|
|
|
|
#include "color.h"
|
|
#include "libweston-internal.h"
|
|
|
|
/**
|
|
* Increase reference count of the color transform object
|
|
*
|
|
* \param xform The color transform. NULL is accepted too.
|
|
* \return xform.
|
|
*/
|
|
WL_EXPORT struct weston_color_transform *
|
|
weston_color_transform_ref(struct weston_color_transform *xform)
|
|
{
|
|
/* NULL is a valid color transform: identity */
|
|
if (!xform)
|
|
return NULL;
|
|
|
|
assert(xform->ref_count > 0);
|
|
xform->ref_count++;
|
|
return xform;
|
|
}
|
|
|
|
/**
|
|
* Decrease and potentially destroy the color transform object
|
|
*
|
|
* \param xform The color transform. NULL is accepted too.
|
|
*/
|
|
WL_EXPORT void
|
|
weston_color_transform_unref(struct weston_color_transform *xform)
|
|
{
|
|
if (!xform)
|
|
return;
|
|
|
|
assert(xform->ref_count > 0);
|
|
if (--xform->ref_count > 0)
|
|
return;
|
|
|
|
wl_signal_emit(&xform->destroy_signal, xform);
|
|
xform->cm->destroy_color_transform(xform);
|
|
}
|
|
|
|
/**
|
|
* Initializes a newly allocated color transform object
|
|
*
|
|
* This is used only by color managers. They sub-class weston_color_transform.
|
|
*
|
|
* The reference count starts at 1.
|
|
*
|
|
* To destroy a weston_color_transform, use weston_color_transfor_unref().
|
|
*/
|
|
WL_EXPORT void
|
|
weston_color_transform_init(struct weston_color_transform *xform,
|
|
struct weston_color_manager *cm)
|
|
{
|
|
xform->cm = cm;
|
|
xform->ref_count = 1;
|
|
wl_signal_init(&xform->destroy_signal);
|
|
}
|
|
|
|
/** Deep copy */
|
|
void
|
|
weston_surface_color_transform_copy(struct weston_surface_color_transform *dst,
|
|
const struct weston_surface_color_transform *src)
|
|
{
|
|
*dst = *src;
|
|
dst->transform = weston_color_transform_ref(src->transform);
|
|
}
|
|
|
|
/** Unref contents */
|
|
void
|
|
weston_surface_color_transform_fini(struct weston_surface_color_transform *surf_xform)
|
|
{
|
|
weston_color_transform_unref(surf_xform->transform);
|
|
}
|
|
|
|
/**
|
|
* Ensure that the surface's color transformation for the given output is
|
|
* populated in the paint nodes for all the views.
|
|
*
|
|
* Creates the color transformation description if necessary by calling
|
|
* into the color manager.
|
|
*
|
|
* \param pnode Paint node defining the surface and the output. All
|
|
* paint nodes with the same surface and output will be ensured.
|
|
*/
|
|
void
|
|
weston_paint_node_ensure_color_transform(struct weston_paint_node *pnode)
|
|
{
|
|
struct weston_surface *surface = pnode->surface;
|
|
struct weston_output *output = pnode->output;
|
|
struct weston_color_manager *cm = surface->compositor->color_manager;
|
|
struct weston_surface_color_transform surf_xform = {};
|
|
struct weston_paint_node *it;
|
|
bool ok;
|
|
|
|
/*
|
|
* Invariant: all paint nodes with the same surface+output have the
|
|
* same surf_xform state.
|
|
*/
|
|
if (pnode->surf_xform_valid)
|
|
return;
|
|
|
|
ok = cm->get_surface_color_transform(cm, surface, output, &surf_xform);
|
|
|
|
wl_list_for_each(it, &surface->paint_node_list, surface_link) {
|
|
if (it->output == output) {
|
|
assert(it->surf_xform_valid == false);
|
|
assert(it->surf_xform.transform == NULL);
|
|
weston_surface_color_transform_copy(&it->surf_xform,
|
|
&surf_xform);
|
|
it->surf_xform_valid = ok;
|
|
}
|
|
}
|
|
|
|
weston_surface_color_transform_fini(&surf_xform);
|
|
|
|
if (!ok) {
|
|
if (surface->resource)
|
|
wl_resource_post_no_memory(surface->resource);
|
|
weston_log("Failed to create color transformation for a surface.\n");
|
|
}
|
|
}
|
|
|