author | hgs |
Fri, 14 May 2010 18:43:44 -0500 | |
changeset 20 | 7e3786c5ed27 |
parent 16 | 8e837d1bf446 |
child 30 | 7e817e7e631c |
permissions | -rw-r--r-- |
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/* GStreamer |
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* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu> |
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* 2004 Wim Taymans <wim@fluendo.com> |
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* |
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* gstsystemclock.c: Default clock, uses the system clock |
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* |
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* This library is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Library General Public |
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* License as published by the Free Software Foundation; either |
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* version 2 of the License, or (at your option) any later version. |
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* |
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* This library is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Library General Public License for more details. |
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* |
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* You should have received a copy of the GNU Library General Public |
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* License along with this library; if not, write to the |
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
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* Boston, MA 02111-1307, USA. |
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*/ |
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|
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/** |
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* SECTION:gstsystemclock |
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* @short_description: Default clock that uses the current system time |
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* @see_also: #GstClock |
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* |
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* The GStreamer core provides a GstSystemClock based on the system time. |
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* Asynchronous callbacks are scheduled from an internal thread. |
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* |
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* Clock implementors are encouraged to subclass this systemclock as it |
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* implements the async notification. |
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* |
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* Subclasses can however override all of the important methods for sync and |
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* async notifications to implement their own callback methods or blocking |
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* wait operations. |
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* |
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* Last reviewed on 2006-03-08 (0.10.4) |
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*/ |
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#include "gst_private.h" |
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#include "gstinfo.h" |
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#include "gstsystemclock.h" |
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#include "gstenumtypes.h" |
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#include "gstpoll.h" |
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#include <errno.h> |
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#ifdef __SYMBIAN32__ |
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#include <glib_global.h> |
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#endif |
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/* Define this to get some extra debug about jitter from each clock_wait */ |
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#undef WAIT_DEBUGGING |
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struct _GstSystemClockPrivate |
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{ |
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GstClockType clock_type; |
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GstPoll *timer; |
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gint wakeup_count; /* the number of entries with a pending wakeup */ |
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gboolean async_wakeup; /* if the wakeup was because of a async list change */ |
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}; |
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#define GST_SYSTEM_CLOCK_GET_PRIVATE(obj) \ |
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(G_TYPE_INSTANCE_GET_PRIVATE ((obj), GST_TYPE_SYSTEM_CLOCK, \ |
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GstSystemClockPrivate)) |
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#ifdef HAVE_POSIX_TIMERS |
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# ifdef HAVE_MONOTONIC_CLOCK |
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# define DEFAULT_CLOCK_TYPE GST_CLOCK_TYPE_MONOTONIC |
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# else |
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# define DEFAULT_CLOCK_TYPE GST_CLOCK_TYPE_REALTIME |
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# endif |
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#else |
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#define DEFAULT_CLOCK_TYPE GST_CLOCK_TYPE_REALTIME |
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#endif |
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enum |
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{ |
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PROP_0, |
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PROP_CLOCK_TYPE, |
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/* FILL ME */ |
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}; |
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/* the one instance of the systemclock */ |
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static GstClock *_the_system_clock = NULL; |
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static void gst_system_clock_class_init (GstSystemClockClass * klass); |
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static void gst_system_clock_init (GstSystemClock * clock); |
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static void gst_system_clock_dispose (GObject * object); |
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static void gst_system_clock_set_property (GObject * object, guint prop_id, |
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const GValue * value, GParamSpec * pspec); |
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static void gst_system_clock_get_property (GObject * object, guint prop_id, |
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GValue * value, GParamSpec * pspec); |
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static GstClockTime gst_system_clock_get_internal_time (GstClock * clock); |
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static guint64 gst_system_clock_get_resolution (GstClock * clock); |
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static GstClockReturn gst_system_clock_id_wait_jitter (GstClock * clock, |
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GstClockEntry * entry, GstClockTimeDiff * jitter); |
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static GstClockReturn gst_system_clock_id_wait_jitter_unlocked |
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(GstClock * clock, GstClockEntry * entry, GstClockTimeDiff * jitter, |
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gboolean restart); |
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static GstClockReturn gst_system_clock_id_wait_async (GstClock * clock, |
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GstClockEntry * entry); |
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static void gst_system_clock_id_unschedule (GstClock * clock, |
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GstClockEntry * entry); |
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static void gst_system_clock_async_thread (GstClock * clock); |
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static gboolean gst_system_clock_start_async (GstSystemClock * clock); |
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static void gst_system_clock_add_wakeup (GstSystemClock * sysclock); |
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static GStaticMutex _gst_sysclock_mutex = G_STATIC_MUTEX_INIT; |
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static GstClockClass *parent_class = NULL; |
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/* static guint gst_system_clock_signals[LAST_SIGNAL] = { 0 }; */ |
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G_DEFINE_TYPE (GstSystemClock, gst_system_clock, GST_TYPE_CLOCK); |
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static void |
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gst_system_clock_class_init (GstSystemClockClass * klass) |
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{ |
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GObjectClass *gobject_class; |
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GstClockClass *gstclock_class; |
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gobject_class = (GObjectClass *) klass; |
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gstclock_class = (GstClockClass *) klass; |
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parent_class = g_type_class_peek_parent (klass); |
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g_type_class_add_private (klass, sizeof (GstSystemClockPrivate)); |
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gobject_class->dispose = gst_system_clock_dispose; |
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gobject_class->set_property = gst_system_clock_set_property; |
134 |
gobject_class->get_property = gst_system_clock_get_property; |
|
135 |
||
136 |
g_object_class_install_property (gobject_class, PROP_CLOCK_TYPE, |
|
137 |
g_param_spec_enum ("clock-type", "Clock type", |
|
138 |
"The type of underlying clock implementation used", |
|
139 |
GST_TYPE_CLOCK_TYPE, DEFAULT_CLOCK_TYPE, G_PARAM_READWRITE)); |
|
0
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140 |
|
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gstclock_class->get_internal_time = gst_system_clock_get_internal_time; |
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gstclock_class->get_resolution = gst_system_clock_get_resolution; |
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|
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gstclock_class->wait_jitter = gst_system_clock_id_wait_jitter; |
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gstclock_class->wait_async = gst_system_clock_id_wait_async; |
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gstclock_class->unschedule = gst_system_clock_id_unschedule; |
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146 |
} |
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147 |
|
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148 |
static void |
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gst_system_clock_init (GstSystemClock * clock) |
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150 |
{ |
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GST_OBJECT_FLAG_SET (clock, |
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GST_CLOCK_FLAG_CAN_DO_SINGLE_SYNC | |
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GST_CLOCK_FLAG_CAN_DO_SINGLE_ASYNC | |
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GST_CLOCK_FLAG_CAN_DO_PERIODIC_SYNC | |
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GST_CLOCK_FLAG_CAN_DO_PERIODIC_ASYNC); |
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156 |
|
16 | 157 |
clock->priv = GST_SYSTEM_CLOCK_GET_PRIVATE (clock); |
158 |
||
159 |
clock->priv->clock_type = DEFAULT_CLOCK_TYPE; |
|
160 |
clock->priv->timer = gst_poll_new_timer (); |
|
161 |
||
0
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#if 0 |
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/* Uncomment this to start the async clock thread straight away */ |
16 | 164 |
GST_OBJECT_LOCK (clock); |
0
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gst_system_clock_start_async (clock); |
16 | 166 |
GST_OBJECT_UNLOCK (clock); |
0
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#endif |
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168 |
} |
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169 |
|
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170 |
static void |
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gst_system_clock_dispose (GObject * object) |
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172 |
{ |
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GstClock *clock = (GstClock *) object; |
16 | 174 |
GstSystemClock *sysclock = GST_SYSTEM_CLOCK_CAST (clock); |
0
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GList *entries; |
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176 |
|
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/* else we have to stop the thread */ |
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GST_OBJECT_LOCK (clock); |
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sysclock->stopping = TRUE; |
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180 |
/* unschedule all entries */ |
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for (entries = clock->entries; entries; entries = g_list_next (entries)) { |
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GstClockEntry *entry = (GstClockEntry *) entries->data; |
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183 |
|
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GST_CAT_DEBUG (GST_CAT_CLOCK, "unscheduling entry %p", entry); |
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entry->status = GST_CLOCK_UNSCHEDULED; |
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186 |
} |
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g_list_free (clock->entries); |
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clock->entries = NULL; |
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GST_CLOCK_BROADCAST (clock); |
16 | 190 |
gst_system_clock_add_wakeup (sysclock); |
0
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GST_OBJECT_UNLOCK (clock); |
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192 |
|
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193 |
if (sysclock->thread) |
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194 |
g_thread_join (sysclock->thread); |
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sysclock->thread = NULL; |
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GST_CAT_DEBUG (GST_CAT_CLOCK, "joined thread"); |
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197 |
|
16 | 198 |
gst_poll_free (sysclock->priv->timer); |
199 |
||
0
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200 |
G_OBJECT_CLASS (parent_class)->dispose (object); |
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|
201 |
|
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|
202 |
if (_the_system_clock == clock) { |
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|
203 |
_the_system_clock = NULL; |
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|
204 |
GST_CAT_DEBUG (GST_CAT_CLOCK, "disposed system clock"); |
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205 |
} |
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206 |
} |
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|
207 |
|
16 | 208 |
static void |
209 |
gst_system_clock_set_property (GObject * object, guint prop_id, |
|
210 |
const GValue * value, GParamSpec * pspec) |
|
211 |
{ |
|
212 |
GstSystemClock *sysclock = GST_SYSTEM_CLOCK (object); |
|
213 |
||
214 |
switch (prop_id) { |
|
215 |
case PROP_CLOCK_TYPE: |
|
216 |
sysclock->priv->clock_type = g_value_get_enum (value); |
|
217 |
GST_CAT_DEBUG (GST_CAT_CLOCK, "clock-type set to %d", |
|
218 |
sysclock->priv->clock_type); |
|
219 |
break; |
|
220 |
default: |
|
221 |
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); |
|
222 |
break; |
|
223 |
} |
|
224 |
} |
|
225 |
||
226 |
static void |
|
227 |
gst_system_clock_get_property (GObject * object, guint prop_id, GValue * value, |
|
228 |
GParamSpec * pspec) |
|
229 |
{ |
|
230 |
GstSystemClock *sysclock = GST_SYSTEM_CLOCK (object); |
|
231 |
||
232 |
switch (prop_id) { |
|
233 |
case PROP_CLOCK_TYPE: |
|
234 |
g_value_set_enum (value, sysclock->priv->clock_type); |
|
235 |
break; |
|
236 |
default: |
|
237 |
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); |
|
238 |
break; |
|
239 |
} |
|
240 |
} |
|
241 |
||
0
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|
242 |
/** |
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|
243 |
* gst_system_clock_obtain: |
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244 |
* |
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|
245 |
* Get a handle to the default system clock. The refcount of the |
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|
246 |
* clock will be increased so you need to unref the clock after |
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247 |
* usage. |
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248 |
* |
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249 |
* Returns: the default clock. |
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250 |
* |
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251 |
* MT safe. |
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252 |
*/ |
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|
253 |
#ifdef __SYMBIAN32__ |
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|
254 |
EXPORT_C |
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255 |
#endif |
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256 |
|
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257 |
GstClock * |
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258 |
gst_system_clock_obtain (void) |
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259 |
{ |
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GstClock *clock; |
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261 |
|
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262 |
g_static_mutex_lock (&_gst_sysclock_mutex); |
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263 |
clock = _the_system_clock; |
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264 |
|
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265 |
if (clock == NULL) { |
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266 |
GST_CAT_DEBUG (GST_CAT_CLOCK, "creating new static system clock"); |
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|
267 |
clock = g_object_new (GST_TYPE_SYSTEM_CLOCK, |
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|
268 |
"name", "GstSystemClock", NULL); |
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|
269 |
|
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|
270 |
/* we created the global clock; take ownership so |
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|
271 |
* we can hand out instances later */ |
16 | 272 |
gst_object_ref_sink (clock); |
0
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273 |
|
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|
274 |
_the_system_clock = clock; |
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275 |
g_static_mutex_unlock (&_gst_sysclock_mutex); |
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|
276 |
} else { |
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parents:
diff
changeset
|
277 |
g_static_mutex_unlock (&_gst_sysclock_mutex); |
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parents:
diff
changeset
|
278 |
GST_CAT_DEBUG (GST_CAT_CLOCK, "returning static system clock"); |
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diff
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|
279 |
} |
0e761a78d257
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parents:
diff
changeset
|
280 |
|
0e761a78d257
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diff
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|
281 |
/* we ref it since we are a clock factory. */ |
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parents:
diff
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|
282 |
gst_object_ref (clock); |
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diff
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|
283 |
return clock; |
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diff
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|
284 |
} |
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diff
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|
285 |
|
16 | 286 |
static void |
287 |
gst_system_clock_remove_wakeup (GstSystemClock * sysclock) |
|
288 |
{ |
|
289 |
g_return_if_fail (sysclock->priv->wakeup_count > 0); |
|
290 |
||
291 |
sysclock->priv->wakeup_count--; |
|
292 |
if (sysclock->priv->wakeup_count == 0) { |
|
293 |
/* read the control socket byte when we removed the last wakeup count */ |
|
294 |
GST_CAT_DEBUG (GST_CAT_CLOCK, "reading control"); |
|
295 |
while (!gst_poll_read_control (sysclock->priv->timer)) { |
|
296 |
g_warning ("gstsystemclock: read control failed, trying again\n"); |
|
297 |
} |
|
298 |
GST_CLOCK_BROADCAST (sysclock); |
|
299 |
} |
|
300 |
GST_CAT_DEBUG (GST_CAT_CLOCK, "wakeup count %d", |
|
301 |
sysclock->priv->wakeup_count); |
|
302 |
} |
|
303 |
||
304 |
static void |
|
305 |
gst_system_clock_add_wakeup (GstSystemClock * sysclock) |
|
306 |
{ |
|
307 |
/* only write the control socket for the first wakeup */ |
|
308 |
if (sysclock->priv->wakeup_count == 0) { |
|
309 |
GST_CAT_DEBUG (GST_CAT_CLOCK, "writing control"); |
|
310 |
while (!gst_poll_write_control (sysclock->priv->timer)) { |
|
311 |
g_warning |
|
312 |
("gstsystemclock: write control failed in wakeup_async, trying again : %d:%s\n", |
|
313 |
errno, g_strerror (errno)); |
|
314 |
} |
|
315 |
} |
|
316 |
sysclock->priv->wakeup_count++; |
|
317 |
GST_CAT_DEBUG (GST_CAT_CLOCK, "wakeup count %d", |
|
318 |
sysclock->priv->wakeup_count); |
|
319 |
} |
|
320 |
||
321 |
static void |
|
322 |
gst_system_clock_wait_wakeup (GstSystemClock * sysclock) |
|
323 |
{ |
|
324 |
while (sysclock->priv->wakeup_count > 0) { |
|
325 |
GST_CLOCK_WAIT (sysclock); |
|
326 |
} |
|
327 |
} |
|
328 |
||
0
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Revision: 200949
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diff
changeset
|
329 |
/* this thread reads the sorted clock entries from the queue. |
0e761a78d257
Revision: 200949
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parents:
diff
changeset
|
330 |
* |
0e761a78d257
Revision: 200949
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parents:
diff
changeset
|
331 |
* It waits on each of them and fires the callback when the timeout occurs. |
0e761a78d257
Revision: 200949
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parents:
diff
changeset
|
332 |
* |
0e761a78d257
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parents:
diff
changeset
|
333 |
* When an entry in the queue was canceled before we wait for it, it is |
0e761a78d257
Revision: 200949
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parents:
diff
changeset
|
334 |
* simply skipped. |
0e761a78d257
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parents:
diff
changeset
|
335 |
* |
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parents:
diff
changeset
|
336 |
* When waiting for an entry, it can become canceled, in that case we don't |
0e761a78d257
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parents:
diff
changeset
|
337 |
* call the callback but move to the next item in the queue. |
0e761a78d257
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parents:
diff
changeset
|
338 |
* |
0e761a78d257
Revision: 200949
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parents:
diff
changeset
|
339 |
* MT safe. |
0e761a78d257
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parents:
diff
changeset
|
340 |
*/ |
0e761a78d257
Revision: 200949
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parents:
diff
changeset
|
341 |
static void |
0e761a78d257
Revision: 200949
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parents:
diff
changeset
|
342 |
gst_system_clock_async_thread (GstClock * clock) |
0e761a78d257
Revision: 200949
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parents:
diff
changeset
|
343 |
{ |
16 | 344 |
GstSystemClock *sysclock = GST_SYSTEM_CLOCK_CAST (clock); |
0
0e761a78d257
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parents:
diff
changeset
|
345 |
|
0e761a78d257
Revision: 200949
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parents:
diff
changeset
|
346 |
GST_CAT_DEBUG (GST_CAT_CLOCK, "enter system clock thread"); |
0e761a78d257
Revision: 200949
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parents:
diff
changeset
|
347 |
GST_OBJECT_LOCK (clock); |
0e761a78d257
Revision: 200949
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parents:
diff
changeset
|
348 |
/* signal spinup */ |
0e761a78d257
Revision: 200949
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parents:
diff
changeset
|
349 |
GST_CLOCK_BROADCAST (clock); |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
350 |
/* now enter our (almost) infinite loop */ |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
351 |
while (!sysclock->stopping) { |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
352 |
GstClockEntry *entry; |
0e761a78d257
Revision: 200949
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parents:
diff
changeset
|
353 |
GstClockTime requested; |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
354 |
GstClockReturn res; |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
355 |
|
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
356 |
/* check if something to be done */ |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
357 |
while (clock->entries == NULL) { |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
358 |
GST_CAT_DEBUG (GST_CAT_CLOCK, "no clock entries, waiting.."); |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
359 |
/* wait for work to do */ |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
360 |
GST_CLOCK_WAIT (clock); |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
361 |
GST_CAT_DEBUG (GST_CAT_CLOCK, "got signal"); |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
362 |
/* clock was stopping, exit */ |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
363 |
if (sysclock->stopping) |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
364 |
goto exit; |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
365 |
} |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
366 |
|
16 | 367 |
/* see if we have a pending wakeup because the order of the list |
368 |
* changed. */ |
|
369 |
if (sysclock->priv->async_wakeup) { |
|
370 |
GST_CAT_DEBUG (GST_CAT_CLOCK, "clear async wakeup"); |
|
371 |
gst_system_clock_remove_wakeup (sysclock); |
|
372 |
sysclock->priv->async_wakeup = FALSE; |
|
373 |
} |
|
374 |
||
0
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
375 |
/* pick the next entry */ |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
376 |
entry = clock->entries->data; |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
377 |
/* if it was unscheduled, just move on to the next entry */ |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
378 |
if (entry->status == GST_CLOCK_UNSCHEDULED) { |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
379 |
GST_CAT_DEBUG (GST_CAT_CLOCK, "entry %p was unscheduled", entry); |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
380 |
goto next_entry; |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
381 |
} |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
382 |
|
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
383 |
requested = entry->time; |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
384 |
|
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
385 |
/* now wait for the entry, we already hold the lock */ |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
386 |
res = |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
387 |
gst_system_clock_id_wait_jitter_unlocked (clock, (GstClockID) entry, |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
388 |
NULL, FALSE); |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
389 |
|
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
390 |
switch (res) { |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
391 |
case GST_CLOCK_UNSCHEDULED: |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
392 |
/* entry was unscheduled, move to the next */ |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
393 |
GST_CAT_DEBUG (GST_CAT_CLOCK, "async entry %p unscheduled", entry); |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
394 |
goto next_entry; |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
395 |
case GST_CLOCK_OK: |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
396 |
case GST_CLOCK_EARLY: |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
397 |
{ |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
398 |
/* entry timed out normally, fire the callback and move to the next |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
399 |
* entry */ |
16 | 400 |
GST_CAT_DEBUG (GST_CAT_CLOCK, "async entry %p timed out", entry); |
0
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
401 |
if (entry->func) { |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
402 |
/* unlock before firing the callback */ |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
403 |
GST_OBJECT_UNLOCK (clock); |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
404 |
entry->func (clock, entry->time, (GstClockID) entry, |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
405 |
entry->user_data); |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
406 |
GST_OBJECT_LOCK (clock); |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
407 |
} |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
408 |
if (entry->type == GST_CLOCK_ENTRY_PERIODIC) { |
16 | 409 |
GST_CAT_DEBUG (GST_CAT_CLOCK, "updating periodic entry %p", entry); |
0
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
410 |
/* adjust time now */ |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
411 |
entry->time = requested + entry->interval; |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
412 |
/* and resort the list now */ |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
413 |
clock->entries = |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
414 |
g_list_sort (clock->entries, gst_clock_id_compare_func); |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
415 |
/* and restart */ |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
416 |
continue; |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
417 |
} else { |
16 | 418 |
GST_CAT_DEBUG (GST_CAT_CLOCK, "moving to next entry"); |
0
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
419 |
goto next_entry; |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
420 |
} |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
421 |
} |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
422 |
case GST_CLOCK_BUSY: |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
423 |
/* somebody unlocked the entry but is was not canceled, This means that |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
424 |
* either a new entry was added in front of the queue or some other entry |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
425 |
* was canceled. Whatever it is, pick the head entry of the list and |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
426 |
* continue waiting. */ |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
427 |
GST_CAT_DEBUG (GST_CAT_CLOCK, "async entry %p needs restart", entry); |
16 | 428 |
|
429 |
/* we set the entry back to the OK state. This is needed so that the |
|
430 |
* _unschedule() code can see if an entry is currently being waited |
|
431 |
* on (when its state is BUSY). */ |
|
432 |
entry->status = GST_CLOCK_OK; |
|
0
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
433 |
continue; |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
434 |
default: |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
435 |
GST_CAT_DEBUG (GST_CAT_CLOCK, |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
436 |
"strange result %d waiting for %p, skipping", res, entry); |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
437 |
g_warning ("%s: strange result %d waiting for %p, skipping", |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
438 |
GST_OBJECT_NAME (clock), res, entry); |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
439 |
goto next_entry; |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
440 |
} |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
441 |
next_entry: |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
442 |
/* we remove the current entry and unref it */ |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
443 |
clock->entries = g_list_remove (clock->entries, entry); |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
444 |
gst_clock_id_unref ((GstClockID) entry); |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
445 |
} |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
446 |
exit: |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
447 |
/* signal exit */ |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
448 |
GST_CLOCK_BROADCAST (clock); |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
449 |
GST_OBJECT_UNLOCK (clock); |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
450 |
GST_CAT_DEBUG (GST_CAT_CLOCK, "exit system clock thread"); |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
451 |
} |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
452 |
|
16 | 453 |
#ifdef HAVE_POSIX_TIMERS |
454 |
static inline clockid_t |
|
455 |
clock_type_to_posix_id (GstClockType clock_type) |
|
456 |
{ |
|
457 |
#ifdef HAVE_MONOTONIC_CLOCK |
|
458 |
if (clock_type == GST_CLOCK_TYPE_MONOTONIC) |
|
459 |
return CLOCK_MONOTONIC; |
|
460 |
else |
|
461 |
#endif |
|
462 |
return CLOCK_REALTIME; |
|
463 |
} |
|
464 |
#endif |
|
465 |
||
0
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
466 |
/* MT safe */ |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
467 |
static GstClockTime |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
468 |
gst_system_clock_get_internal_time (GstClock * clock) |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
469 |
{ |
16 | 470 |
#ifdef HAVE_POSIX_TIMERS |
471 |
GstSystemClock *sysclock = GST_SYSTEM_CLOCK_CAST (clock); |
|
472 |
clockid_t ptype; |
|
473 |
struct timespec ts; |
|
474 |
||
475 |
ptype = clock_type_to_posix_id (sysclock->priv->clock_type); |
|
476 |
||
477 |
if (G_UNLIKELY (clock_gettime (ptype, &ts))) |
|
478 |
return GST_CLOCK_TIME_NONE; |
|
479 |
||
480 |
return GST_TIMESPEC_TO_TIME (ts); |
|
481 |
#else |
|
0
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
482 |
GTimeVal timeval; |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
483 |
|
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
484 |
g_get_current_time (&timeval); |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
485 |
|
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
486 |
return GST_TIMEVAL_TO_TIME (timeval); |
16 | 487 |
#endif |
0
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
488 |
} |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
489 |
|
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
490 |
static guint64 |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
491 |
gst_system_clock_get_resolution (GstClock * clock) |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
492 |
{ |
16 | 493 |
#ifdef HAVE_POSIX_TIMERS |
494 |
GstSystemClock *sysclock = GST_SYSTEM_CLOCK_CAST (clock); |
|
495 |
clockid_t ptype; |
|
496 |
struct timespec ts; |
|
497 |
||
498 |
ptype = clock_type_to_posix_id (sysclock->priv->clock_type); |
|
499 |
||
500 |
if (G_UNLIKELY (clock_getres (ptype, &ts))) |
|
501 |
return GST_CLOCK_TIME_NONE; |
|
502 |
||
503 |
return GST_TIMESPEC_TO_TIME (ts); |
|
504 |
#else |
|
0
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
505 |
return 1 * GST_USECOND; |
16 | 506 |
#endif |
0
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
507 |
} |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
508 |
|
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
509 |
/* synchronously wait on the given GstClockEntry. |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
510 |
* |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
511 |
* We do this by blocking on the global clock GCond variable with |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
512 |
* the requested time as a timeout. This allows us to unblock the |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
513 |
* entry by signaling the GCond variable. |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
514 |
* |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
515 |
* Note that signaling the global GCond unlocks all waiting entries. So |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
516 |
* we need to check if an unlocked entry has changed when it unlocks. |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
517 |
* |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
518 |
* Entries that arrive too late are simply not waited on and a |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
519 |
* GST_CLOCK_EARLY result is returned. |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
520 |
* |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
521 |
* should be called with LOCK held. |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
522 |
* |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
523 |
* MT safe. |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
524 |
*/ |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
525 |
static GstClockReturn |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
526 |
gst_system_clock_id_wait_jitter_unlocked (GstClock * clock, |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
527 |
GstClockEntry * entry, GstClockTimeDiff * jitter, gboolean restart) |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
528 |
{ |
16 | 529 |
GstSystemClock *sysclock = GST_SYSTEM_CLOCK_CAST (clock); |
530 |
GstClockTime entryt, real, now; |
|
0
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
531 |
GstClockTimeDiff diff; |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
532 |
|
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
533 |
/* need to call the overridden method because we want to sync against the time |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
534 |
* of the clock, whatever the subclass uses as a clock. */ |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
535 |
real = GST_CLOCK_GET_CLASS (clock)->get_internal_time (clock); |
16 | 536 |
now = gst_clock_adjust_unlocked (clock, real); |
537 |
||
538 |
/* get the time of the entry */ |
|
0
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
539 |
entryt = GST_CLOCK_ENTRY_TIME (entry); |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
540 |
|
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
541 |
if (jitter) { |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
542 |
*jitter = GST_CLOCK_DIFF (entryt, now); |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
543 |
} |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
544 |
/* the diff of the entry with the clock is the amount of time we have to |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
545 |
* wait */ |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
546 |
diff = entryt - now; |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
547 |
|
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
548 |
GST_CAT_DEBUG (GST_CAT_CLOCK, "entry %p" |
16 | 549 |
" time %" GST_TIME_FORMAT |
0
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
550 |
" now %" GST_TIME_FORMAT |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
551 |
" real %" GST_TIME_FORMAT |
16 | 552 |
" diff (time-now) %" G_GINT64_FORMAT, |
0
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
553 |
entry, |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
554 |
GST_TIME_ARGS (entryt), GST_TIME_ARGS (now), GST_TIME_ARGS (real), diff); |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
555 |
|
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
556 |
if (diff > 0) { |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
557 |
#ifdef WAIT_DEBUGGING |
16 | 558 |
GstClockTime final; |
0
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
559 |
#endif |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
560 |
|
16 | 561 |
while (entry->status != GST_CLOCK_UNSCHEDULED) { |
562 |
gint pollret; |
|
563 |
||
564 |
/* mark the entry as busy */ |
|
565 |
entry->status = GST_CLOCK_BUSY; |
|
566 |
GST_OBJECT_UNLOCK (clock); |
|
567 |
||
568 |
/* now wait on the entry, it either times out or the fd is written. */ |
|
569 |
pollret = gst_poll_wait (sysclock->priv->timer, diff); |
|
570 |
||
571 |
/* another thread can read the fd before we get the lock */ |
|
572 |
GST_OBJECT_LOCK (clock); |
|
573 |
if (entry->status == GST_CLOCK_UNSCHEDULED) { |
|
574 |
GST_CAT_DEBUG (GST_CAT_CLOCK, "entry %p unlocked", entry); |
|
575 |
gst_system_clock_remove_wakeup (sysclock); |
|
576 |
} else { |
|
577 |
if (pollret != 0) { |
|
578 |
/* some other id got unlocked */ |
|
579 |
if (!restart) { |
|
580 |
/* this can happen if the entry got unlocked because of an async |
|
581 |
* entry was added to the head of the async queue. */ |
|
582 |
GST_CAT_DEBUG (GST_CAT_CLOCK, "wakeup waiting for entry %p", entry); |
|
583 |
break; |
|
584 |
} |
|
585 |
||
586 |
/* mark ourselves as EARLY, we release the lock and we could be |
|
587 |
* unscheduled ourselves but we don't want the unscheduling thread |
|
588 |
* to write on the control socket (it does that when an entry has a |
|
589 |
* BUSY status). */ |
|
590 |
entry->status = GST_CLOCK_EARLY; |
|
0
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
591 |
|
16 | 592 |
/* wait till all the entries got woken up */ |
593 |
gst_system_clock_wait_wakeup (sysclock); |
|
594 |
||
595 |
/* we released the lock in the wait, recheck our status, we don't need |
|
596 |
* to remove the wakeup count because we marked the entry as EARLY |
|
597 |
* before releasing the object lock. */ |
|
598 |
if (entry->status == GST_CLOCK_UNSCHEDULED) { |
|
599 |
GST_CAT_DEBUG (GST_CAT_CLOCK, "entry %p got unscheduled", entry); |
|
600 |
break; |
|
601 |
} |
|
602 |
||
603 |
GST_CAT_DEBUG (GST_CAT_CLOCK, "entry %p needs to be restarted", |
|
604 |
entry); |
|
605 |
} else { |
|
606 |
GST_CAT_DEBUG (GST_CAT_CLOCK, "entry %p unlocked after timeout", |
|
607 |
entry); |
|
608 |
} |
|
609 |
||
610 |
/* reschedule if gst_poll_wait returned early or we have to reschedule after |
|
611 |
* an unlock*/ |
|
612 |
real = GST_CLOCK_GET_CLASS (clock)->get_internal_time (clock); |
|
613 |
now = gst_clock_adjust_unlocked (clock, real); |
|
614 |
diff = entryt - now; |
|
615 |
||
616 |
if (diff <= 0) { |
|
617 |
/* timeout, this is fine, we can report success now */ |
|
618 |
entry->status = GST_CLOCK_OK; |
|
619 |
||
620 |
GST_CAT_DEBUG (GST_CAT_CLOCK, |
|
621 |
"entry %p finished, diff %" G_GINT64_FORMAT, entry, diff); |
|
0
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
622 |
|
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
623 |
#ifdef WAIT_DEBUGGING |
16 | 624 |
final = gst_system_clock_get_internal_time (clock); |
625 |
GST_CAT_DEBUG (GST_CAT_CLOCK, "Waited for %" G_GINT64_FORMAT |
|
626 |
" got %" G_GINT64_FORMAT " diff %" G_GINT64_FORMAT |
|
627 |
" %g target-offset %" G_GINT64_FORMAT " %g", entryt, now, |
|
628 |
now - entryt, |
|
629 |
(double) (GstClockTimeDiff) (now - entryt) / GST_SECOND, |
|
630 |
(final - target), |
|
631 |
((double) (GstClockTimeDiff) (final - target)) / GST_SECOND); |
|
0
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
632 |
#endif |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
633 |
break; |
16 | 634 |
} else { |
635 |
GST_CAT_DEBUG (GST_CAT_CLOCK, |
|
636 |
"entry %p restart, diff %" G_GINT64_FORMAT, entry, diff); |
|
637 |
} |
|
0
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
638 |
} |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
639 |
} |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
640 |
} else if (diff == 0) { |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
641 |
entry->status = GST_CLOCK_OK; |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
642 |
} else { |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
643 |
entry->status = GST_CLOCK_EARLY; |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
644 |
} |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
645 |
return entry->status; |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
646 |
} |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
647 |
|
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
648 |
static GstClockReturn |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
649 |
gst_system_clock_id_wait_jitter (GstClock * clock, GstClockEntry * entry, |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
650 |
GstClockTimeDiff * jitter) |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
651 |
{ |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
652 |
GstClockReturn ret; |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
653 |
|
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
654 |
GST_OBJECT_LOCK (clock); |
16 | 655 |
if (G_UNLIKELY (entry->status == GST_CLOCK_UNSCHEDULED)) |
656 |
goto was_unscheduled; |
|
657 |
||
0
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
658 |
ret = gst_system_clock_id_wait_jitter_unlocked (clock, entry, jitter, TRUE); |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
659 |
GST_OBJECT_UNLOCK (clock); |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
660 |
|
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
661 |
return ret; |
16 | 662 |
|
663 |
/* ERRORS */ |
|
664 |
was_unscheduled: |
|
665 |
{ |
|
666 |
GST_OBJECT_UNLOCK (clock); |
|
667 |
return GST_CLOCK_UNSCHEDULED; |
|
668 |
} |
|
0
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
669 |
} |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
670 |
|
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
671 |
/* Start the async clock thread. Must be called with the object lock |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
672 |
* held */ |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
673 |
static gboolean |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
674 |
gst_system_clock_start_async (GstSystemClock * clock) |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
675 |
{ |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
676 |
GError *error = NULL; |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
677 |
|
16 | 678 |
if (G_LIKELY (clock->thread != NULL)) |
0
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
679 |
return TRUE; /* Thread already running. Nothing to do */ |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
680 |
|
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
681 |
clock->thread = g_thread_create ((GThreadFunc) gst_system_clock_async_thread, |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
682 |
clock, TRUE, &error); |
16 | 683 |
if (G_UNLIKELY (error)) |
0
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
684 |
goto no_thread; |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
685 |
|
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
686 |
/* wait for it to spin up */ |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
687 |
GST_CLOCK_WAIT (clock); |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
688 |
|
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
689 |
return TRUE; |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
690 |
|
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
691 |
/* ERRORS */ |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
692 |
no_thread: |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
693 |
{ |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
694 |
g_warning ("could not create async clock thread: %s", error->message); |
16 | 695 |
g_error_free (error); |
0
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
696 |
} |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
697 |
return FALSE; |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
698 |
} |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
699 |
|
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
700 |
/* Add an entry to the list of pending async waits. The entry is inserted |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
701 |
* in sorted order. If we inserted the entry at the head of the list, we |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
702 |
* need to signal the thread as it might either be waiting on it or waiting |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
703 |
* for a new entry. |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
704 |
* |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
705 |
* MT safe. |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
706 |
*/ |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
707 |
static GstClockReturn |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
708 |
gst_system_clock_id_wait_async (GstClock * clock, GstClockEntry * entry) |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
709 |
{ |
16 | 710 |
GstSystemClock *sysclock; |
711 |
GstClockEntry *head; |
|
712 |
||
713 |
sysclock = GST_SYSTEM_CLOCK_CAST (clock); |
|
714 |
||
0
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
715 |
GST_CAT_DEBUG (GST_CAT_CLOCK, "adding async entry %p", entry); |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
716 |
|
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
717 |
GST_OBJECT_LOCK (clock); |
16 | 718 |
/* Start the clock async thread if needed */ |
719 |
if (G_UNLIKELY (!gst_system_clock_start_async (sysclock))) |
|
720 |
goto thread_error; |
|
0
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
721 |
|
16 | 722 |
if (G_UNLIKELY (entry->status == GST_CLOCK_UNSCHEDULED)) |
723 |
goto was_unscheduled; |
|
724 |
||
725 |
if (clock->entries) |
|
726 |
head = clock->entries->data; |
|
727 |
else |
|
728 |
head = NULL; |
|
0
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
729 |
|
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
730 |
/* need to take a ref */ |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
731 |
gst_clock_id_ref ((GstClockID) entry); |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
732 |
/* insert the entry in sorted order */ |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
733 |
clock->entries = g_list_insert_sorted (clock->entries, entry, |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
734 |
gst_clock_id_compare_func); |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
735 |
|
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
736 |
/* only need to send the signal if the entry was added to the |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
737 |
* front, else the thread is just waiting for another entry and |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
738 |
* will get to this entry automatically. */ |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
739 |
if (clock->entries->data == entry) { |
16 | 740 |
GST_CAT_DEBUG (GST_CAT_CLOCK, "async entry added to head"); |
741 |
if (head == NULL) { |
|
742 |
/* the list was empty before, signal the cond so that the async thread can |
|
743 |
* start taking a look at the queue */ |
|
744 |
GST_CAT_DEBUG (GST_CAT_CLOCK, "first entry, sending signal"); |
|
745 |
GST_CLOCK_BROADCAST (clock); |
|
746 |
} else { |
|
747 |
if (head->status == GST_CLOCK_BUSY) { |
|
748 |
/* the async thread was waiting for an entry, unlock the wait so that it |
|
749 |
* looks at the new head entry instead, we only need to do this once */ |
|
750 |
if (!sysclock->priv->async_wakeup) { |
|
751 |
GST_CAT_DEBUG (GST_CAT_CLOCK, "wakeup async thread"); |
|
752 |
sysclock->priv->async_wakeup = TRUE; |
|
753 |
gst_system_clock_add_wakeup (sysclock); |
|
754 |
} |
|
755 |
} |
|
756 |
} |
|
0
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
757 |
} |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
758 |
GST_OBJECT_UNLOCK (clock); |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
759 |
|
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
760 |
return GST_CLOCK_OK; |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
761 |
|
16 | 762 |
/* ERRORS */ |
0
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
763 |
thread_error: |
16 | 764 |
{ |
765 |
/* Could not start the async clock thread */ |
|
766 |
GST_OBJECT_UNLOCK (clock); |
|
767 |
return GST_CLOCK_ERROR; |
|
768 |
} |
|
769 |
was_unscheduled: |
|
770 |
{ |
|
771 |
GST_OBJECT_UNLOCK (clock); |
|
772 |
return GST_CLOCK_UNSCHEDULED; |
|
773 |
} |
|
0
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
774 |
} |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
775 |
|
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
776 |
/* unschedule an entry. This will set the state of the entry to GST_CLOCK_UNSCHEDULED |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
777 |
* and will signal any thread waiting for entries to recheck their entry. |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
778 |
* We cannot really decide if the signal is needed or not because the entry |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
779 |
* could be waited on in async or sync mode. |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
780 |
* |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
781 |
* MT safe. |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
782 |
*/ |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
783 |
static void |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
784 |
gst_system_clock_id_unschedule (GstClock * clock, GstClockEntry * entry) |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
785 |
{ |
16 | 786 |
GstSystemClock *sysclock; |
787 |
||
788 |
sysclock = GST_SYSTEM_CLOCK_CAST (clock); |
|
789 |
||
0
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
790 |
GST_CAT_DEBUG (GST_CAT_CLOCK, "unscheduling entry %p", entry); |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
791 |
|
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
792 |
GST_OBJECT_LOCK (clock); |
16 | 793 |
if (entry->status == GST_CLOCK_BUSY) { |
794 |
/* the entry was being busy, wake up all entries so that they recheck their |
|
795 |
* status. We cannot wake up just one entry because allocating such a |
|
796 |
* datastructure for each entry would be too heavy and unlocking an entry |
|
797 |
* is usually done when shutting down or some other exceptional case. */ |
|
798 |
GST_CAT_DEBUG (GST_CAT_CLOCK, "entry was BUSY, doing wakeup"); |
|
799 |
gst_system_clock_add_wakeup (sysclock); |
|
800 |
} |
|
801 |
/* when it leaves the poll, it'll detect the unscheduled */ |
|
0
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
802 |
entry->status = GST_CLOCK_UNSCHEDULED; |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
803 |
GST_OBJECT_UNLOCK (clock); |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
804 |
} |