6ffbba3ac1
This introduces a new convention of checking through the compositor destroy listener if the plugin is already initialized. If the plugin is already initialized, then the plugin entry function succeeds as a no-op. This makes it safe to load the same plugin multiple times in a running compositor. Currently module loading functions return failure if a plugin is already loaded, but that will change in the future. Therefore we need this other method of ensuring we do not double-initialize a plugin which would lead to list corruptions the very least. All plugins are converted to use the new helper, except: - those that do not have a destroy listener already, and - hmi-controller which does the same open-coded as the common code pattern did not fit there. Plugins should always have a compositor destroy listener registered since they very least allocate a struct to hold their data. Hence omissions are highlighted in code. Backends do not need this because weston_compositor_load_backend() already protects against double-init. GL-renderer does not export a standard module init function so cannot be initialized the usual way and therefore is not vulnerable to double-init. Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
125 lines
3.4 KiB
C
125 lines
3.4 KiB
C
/*
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* Copyright © 2013 Richard Hughes
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial
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* portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include "config.h"
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#include <stdlib.h>
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#include <string.h>
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#include <libweston/libweston.h>
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#include "cms-helper.h"
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#include "shared/helpers.h"
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#include "weston.h"
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struct cms_static {
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struct weston_compositor *ec;
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struct wl_listener destroy_listener;
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struct wl_listener output_created_listener;
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};
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static void
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cms_output_created(struct cms_static *cms, struct weston_output *o)
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{
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struct weston_color_profile *p;
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struct weston_config_section *s;
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char *profile;
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weston_log("cms-static: output %i [%s] created\n", o->id, o->name);
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if (o->name == NULL)
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return;
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s = weston_config_get_section(wet_get_config(cms->ec),
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"output", "name", o->name);
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if (s == NULL)
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return;
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if (weston_config_section_get_string(s, "icc_profile", &profile, NULL) < 0)
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return;
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p = weston_cms_load_profile(profile);
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if (p == NULL && strlen(profile) > 0) {
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weston_log("cms-static: failed to load %s\n", profile);
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} else {
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weston_log("cms-static: loading %s for %s\n",
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(p != NULL) ? profile : "identity LUT",
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o->name);
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weston_cms_set_color_profile(o, p);
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}
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}
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static void
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cms_notifier_output_created(struct wl_listener *listener, void *data)
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{
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struct weston_output *o = (struct weston_output *) data;
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struct cms_static *cms =
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container_of(listener, struct cms_static, output_created_listener);
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cms_output_created(cms, o);
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}
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static void
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cms_module_destroy(struct cms_static *cms)
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{
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free(cms);
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}
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static void
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cms_notifier_destroy(struct wl_listener *listener, void *data)
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{
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struct cms_static *cms = container_of(listener, struct cms_static, destroy_listener);
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cms_module_destroy(cms);
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}
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WL_EXPORT int
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wet_module_init(struct weston_compositor *ec,
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int *argc, char *argv[])
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{
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struct cms_static *cms;
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struct weston_output *output;
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weston_log("cms-static: initialized\n");
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/* create local state object */
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cms = zalloc(sizeof *cms);
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if (cms == NULL)
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return -1;
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cms->ec = ec;
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if (!weston_compositor_add_destroy_listener_once(ec,
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&cms->destroy_listener,
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cms_notifier_destroy)) {
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free(cms);
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return 0;
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}
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cms->output_created_listener.notify = cms_notifier_output_created;
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wl_signal_add(&ec->output_created_signal, &cms->output_created_listener);
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/* discover outputs */
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wl_list_for_each(output, &ec->output_list, link)
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cms_output_created(cms, output);
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return 0;
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}
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