diff options
Diffstat (limited to 'gst-libs/gst/audio/audioclock.c')
| -rw-r--r-- | gst-libs/gst/audio/audioclock.c | 205 |
1 files changed, 0 insertions, 205 deletions
diff --git a/gst-libs/gst/audio/audioclock.c b/gst-libs/gst/audio/audioclock.c deleted file mode 100644 index 65d2694f..00000000 --- a/gst-libs/gst/audio/audioclock.c +++ /dev/null @@ -1,205 +0,0 @@ -/* GStreamer - * Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu> - * 2000 Wim Taymans <wtay@chello.be> - * - * audioclock.c: Clock for use by audio plugins - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Library General Public - * License as published by the Free Software Foundation; either - * version 2 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 - * Library General Public License for more details. - * - * You should have received a copy of the GNU Library General Public - * License along with this library; if not, write to the - * Free Software Foundation, Inc., 59 Temple Place - Suite 330, - * Boston, MA 02111-1307, USA. - */ - -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif - -#include "audioclock.h" - -static void gst_audio_clock_class_init (GstAudioClockClass * klass); -static void gst_audio_clock_init (GstAudioClock * clock); - -static GstClockTime gst_audio_clock_get_internal_time (GstClock * clock); -static GstClockEntryStatus gst_audio_clock_id_wait_async (GstClock * clock, - GstClockEntry * entry); -static void gst_audio_clock_id_unschedule (GstClock * clock, - GstClockEntry * entry); - -static GstSystemClockClass *parent_class = NULL; - -/* static guint gst_audio_clock_signals[LAST_SIGNAL] = { 0 }; */ - -GType -gst_audio_clock_get_type (void) -{ - static GType clock_type = 0; - - if (!clock_type) { - static const GTypeInfo clock_info = { - sizeof (GstAudioClockClass), - NULL, - NULL, - (GClassInitFunc) gst_audio_clock_class_init, - NULL, - NULL, - sizeof (GstAudioClock), - 4, - (GInstanceInitFunc) gst_audio_clock_init, - NULL - }; - - clock_type = g_type_register_static (GST_TYPE_SYSTEM_CLOCK, "GstAudioClock", - &clock_info, 0); - } - return clock_type; -} - - -static void -gst_audio_clock_class_init (GstAudioClockClass * klass) -{ - GObjectClass *gobject_class; - GstObjectClass *gstobject_class; - GstClockClass *gstclock_class; - - gobject_class = (GObjectClass *) klass; - gstobject_class = (GstObjectClass *) klass; - gstclock_class = (GstClockClass *) klass; - - parent_class = g_type_class_ref (GST_TYPE_SYSTEM_CLOCK); - - gstclock_class->get_internal_time = gst_audio_clock_get_internal_time; - gstclock_class->wait_async = gst_audio_clock_id_wait_async; - gstclock_class->unschedule = gst_audio_clock_id_unschedule; -} - -static void -gst_audio_clock_init (GstAudioClock * clock) -{ - gst_object_set_name (GST_OBJECT (clock), "GstAudioClock"); - - clock->prev1 = 0; - clock->prev2 = 0; -} - -GstClock * -gst_audio_clock_new (gchar * name, GstAudioClockGetTimeFunc func, - gpointer user_data) -{ - GstAudioClock *aclock = - GST_AUDIO_CLOCK (g_object_new (GST_TYPE_AUDIO_CLOCK, NULL)); - - aclock->func = func; - aclock->user_data = user_data; - aclock->adjust = 0; - - return (GstClock *) aclock; -} - -void -gst_audio_clock_set_active (GstAudioClock * aclock, gboolean active) -{ - GstClockTime audio_time, system_time; - GstClock *clock; - GTimeVal timeval; - - g_return_if_fail (GST_IS_AUDIO_CLOCK (aclock)); - clock = GST_CLOCK (aclock); - - if (active == aclock->active) { - /* Nothing to do. */ - return; - } - - audio_time = aclock->func (clock, aclock->user_data); - - g_get_current_time (&timeval); - system_time = GST_TIMEVAL_TO_TIME (timeval); - - /* Set the new adjust value in such a way that there's no abrupt - discontinuity, i.e. if gst_audio_clock_get_internal_time is - invoked right before and right after (de)activating the clock, - the values returned will be close to each other, and the second - value will be greater than or equal than the first. */ - if (active) { - aclock->adjust = aclock->adjust + system_time - audio_time; - } else { - aclock->adjust = aclock->adjust + audio_time - system_time; - } - - aclock->active = active; -} - -static GstClockTime -gst_audio_clock_get_internal_time (GstClock * clock) -{ - GstAudioClock *aclock = GST_AUDIO_CLOCK (clock); - - if (aclock->active) { - return aclock->func (clock, aclock->user_data) + aclock->adjust; - } else { - GTimeVal timeval; - - g_get_current_time (&timeval); - return GST_TIMEVAL_TO_TIME (timeval) + aclock->adjust; - } -} - -void -gst_audio_clock_update_time (GstAudioClock * aclock, GstClockTime time) -{ - /* I don't know of a purpose in updating these; perhaps they can be removed */ - aclock->prev2 = aclock->prev1; - aclock->prev1 = time; - - /* FIXME: the wait_async subsystem should be made threadsafe, but I don't want - * to lock and unlock a mutex on every iteration... */ - while (aclock->async_entries) { - GstClockEntry *entry = (GstClockEntry *) aclock->async_entries->data; - - if (entry->time > time) - break; - - entry->func ((GstClock *) aclock, time, entry, entry->user_data); - - aclock->async_entries = g_slist_delete_link (aclock->async_entries, - aclock->async_entries); - /* do I need to free the entry? */ - } -} - -static gint -compare_clock_entries (GstClockEntry * entry1, GstClockEntry * entry2) -{ - return entry1->time - entry2->time; -} - -static GstClockEntryStatus -gst_audio_clock_id_wait_async (GstClock * clock, GstClockEntry * entry) -{ - GstAudioClock *aclock = (GstAudioClock *) clock; - - aclock->async_entries = g_slist_insert_sorted (aclock->async_entries, - entry, (GCompareFunc) compare_clock_entries); - - /* is this the proper return val? */ - return GST_CLOCK_EARLY; -} - -static void -gst_audio_clock_id_unschedule (GstClock * clock, GstClockEntry * entry) -{ - GstAudioClock *aclock = (GstAudioClock *) clock; - - aclock->async_entries = g_slist_remove (aclock->async_entries, entry); -} |