--- /dev/null
+/**
+ * @file osso.c
+ * @brief Maemo screen unblanking for VLC media player
+ */
+/*****************************************************************************
+ * Copyright © 2009 Rémi Denis-Courmont
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation; either version 2.1
+ * of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ ****************************************************************************/
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <vlc_common.h>
+#include <vlc_plugin.h>
+#include <vlc_inhibit.h>
+
+#include <libosso.h>
+
+static int Open (vlc_object_t *);
+static void Close (vlc_object_t *);
+
+/*
+ * Module descriptor
+ */
+vlc_module_begin ()
+ set_shortname (N_("OSSO"))
+ set_description (N_("OSSO screen unblanking"))
+ set_category (CAT_ADVANCED)
+ set_subcategory (SUBCAT_ADVANCED_MISC)
+ set_capability ("inhibit", 20)
+ set_callbacks (Open, Close)
+vlc_module_end ()
+
+static void Inhibit (vlc_inhibit_t *, bool);
+
+/* We keep a single context per process */
+static struct
+{
+ vlc_mutex_t lock;
+ unsigned refs;
+ unsigned suspensions;
+ osso_context_t *ctx;
+ vlc_timer_t timer;
+} osso = {
+ .lock = VLC_STATIC_MUTEX,
+ .refs = 0,
+ .suspensions = 0,
+};
+
+static void vlc_osso_unblank (void *dummy)
+{
+ (void) dummy;
+
+ vlc_mutex_lock (&osso.lock);
+ osso_display_blanking_pause (osso.ctx);
+ vlc_mutex_unlock (&osso.lock);
+}
+
+#define BLANKING (NULL)
+#define UNBLANKING ((vlc_inhibit_sys_t *)ih)
+
+static int Open (vlc_object_t *obj)
+{
+ vlc_inhibit_t *ih = (vlc_inhibit_t *)obj;
+ int ret = VLC_EGENERIC;
+
+ vlc_mutex_lock (&osso.lock);
+ if (osso.refs++ == 0)
+ {
+ if (vlc_timer_create (&osso.timer, vlc_osso_unblank, NULL))
+ goto out;
+
+ osso.ctx = osso_initialize (PACKAGE, VERSION, 0, NULL);
+ if (osso.ctx == NULL)
+ {
+ vlc_timer_destroy (osso.timer);
+ goto out;
+ }
+
+ msg_Dbg (obj, "initialized OSSO context");
+ ret = VLC_SUCCESS;
+ }
+out:
+ vlc_mutex_unlock (&osso.lock);
+
+ ih->p_sys = BLANKING;
+ ih->inhibit = Inhibit;
+ return ret;
+}
+
+static void Close (vlc_object_t *obj)
+{
+ Inhibit ((vlc_inhibit_t *)obj, false);
+
+ vlc_mutex_lock (&osso.lock);
+ if (--osso.refs == 0)
+ {
+ msg_Dbg (obj, "deinitializing OSSO context");
+ vlc_timer_destroy (osso.timer);
+ osso_deinitialize (osso.ctx);
+ }
+ vlc_mutex_unlock (&osso.lock);
+}
+
+static void Inhibit (vlc_inhibit_t *ih, bool unblank)
+{
+ if (unblank == (ih->p_sys != BLANKING))
+ return; /* already in right state */
+
+ vlc_mutex_lock (&osso.lock);
+ if (unblank)
+ {
+ /* 10 seconds is the shortest blanking interval */
+ mtime_t start = (mdate() / CLOCK_FREQ + 8) * CLOCK_FREQ;
+ mtime_t interval = 9 * CLOCK_FREQ;
+
+ osso_display_state_on (osso.ctx);
+ if (osso.suspensions++ == 0) /* arm timer */
+ vlc_timer_schedule (osso.timer, true, start, interval);
+ ih->p_sys = UNBLANKING;
+ }
+ else
+ {
+ if (--osso.suspensions == 0) /* disarm timer */
+ vlc_timer_schedule (osso.timer, false, 0, 0);
+ ih->p_sys = BLANKING;
+ }
+ vlc_mutex_unlock (&osso.lock);
+}
+