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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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f5affde61c
Original commit message from CVS: - Reclaim cothread state even if the cothread was never activated after the free. - fix the bin state change when there are no more children. - use a real method to signal the parent bin of a state change. - move the state change policy in the scheduler. - remove the unused and ridiculous state change event - don't free the cothread state when the element is disabled. only free it when the element is removed from the scheduler.
157 lines
3.7 KiB
C
157 lines
3.7 KiB
C
/* GStreamer
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* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
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* 2000 Wim Taymans <wim.taymans@chello.be>
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*
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* gstevent.h: Header for GstEvent subsystem
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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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#include "gst/gstinfo.h"
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#include "gst/gstevent.h"
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GType _gst_event_type;
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static GMemChunk *_gst_event_chunk;
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static GMutex *_gst_event_chunk_lock;
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void
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_gst_event_initialize (void)
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{
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gint eventsize = sizeof(GstEvent);
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static const GTypeInfo event_info = {
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0,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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0,
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0,
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NULL,
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NULL,
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};
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/* round up to the nearest 32 bytes for cache-line and other efficiencies */
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eventsize = (((eventsize-1) / 32) + 1) * 32;
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_gst_event_chunk = g_mem_chunk_new ("GstEvent", eventsize,
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eventsize * 32, G_ALLOC_AND_FREE);
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_gst_event_chunk_lock = g_mutex_new ();
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/* register the type */
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_gst_event_type = g_type_register_static (G_TYPE_INT, "GstEvent", &event_info, 0);
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}
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/**
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* gst_event_new:
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* @type: The type of the new event
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*
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* Allocate a new event of the given type.
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*
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* Returns: A new event.
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*/
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GstEvent*
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gst_event_new (GstEventType type)
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{
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GstEvent *event;
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g_mutex_lock (_gst_event_chunk_lock);
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event = g_mem_chunk_alloc (_gst_event_chunk);
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g_mutex_unlock (_gst_event_chunk_lock);
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GST_INFO (GST_CAT_EVENT, "creating new event %p", event);
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GST_DATA_TYPE (event) = _gst_event_type;
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GST_EVENT_TYPE (event) = type;
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GST_EVENT_TIMESTAMP (event) = 0LL;
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GST_EVENT_SRC (event) = NULL;
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return event;
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}
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/**
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* gst_event_free:
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* @event: The event to free
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*
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* Free the given element.
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*/
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void
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gst_event_free (GstEvent* event)
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{
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g_mutex_lock (_gst_event_chunk_lock);
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if (GST_EVENT_SRC (event)) {
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gst_object_unref (GST_EVENT_SRC (event));
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}
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switch (GST_EVENT_TYPE (event)) {
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case GST_EVENT_INFO:
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gst_props_unref (GST_EVENT_INFO_PROPS (event));
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break;
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default:
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break;
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}
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g_mem_chunk_free (_gst_event_chunk, event);
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g_mutex_unlock (_gst_event_chunk_lock);
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}
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/**
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* gst_event_new_seek:
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* @type: The type of the seek event
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* @offset: The offset of the seek
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* @flush: A boolean indicating a flush has to be performed as well
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*
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* Allocate a new seek event with the given parameters.
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*
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* Returns: A new seek event.
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*/
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GstEvent*
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gst_event_new_seek (GstSeekType type, guint64 offset, gboolean flush)
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{
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GstEvent *event;
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event = gst_event_new (GST_EVENT_SEEK);
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GST_EVENT_SEEK_TYPE (event) = type;
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GST_EVENT_SEEK_OFFSET (event) = offset;
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GST_EVENT_SEEK_FLUSH (event) = flush;
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return event;
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}
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/**
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* gst_event_new_info:
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* @props: The GstProps for this info event
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*
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* Allocate a new info event with the given props.
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*
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* Returns: A new info event.
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*/
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GstEvent*
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gst_event_new_info (const gchar *firstname, ...)
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{
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GstEvent *event;
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va_list var_args;
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event = gst_event_new (GST_EVENT_INFO);
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va_start (var_args, firstname);
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GST_EVENT_INFO_PROPS (event) = gst_props_newv (firstname, var_args);
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va_end (var_args);
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return event;
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}
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