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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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74ca793b0a
Original commit message from CVS: Clock fixes. Added async callbacks and clock unscheduling. Threading fixes. Fixed race condition in GstTask and possible deadlock in _pad_get_caps(). Made various subsystems (query, format,..) threadsafe. Lots of cleanups and documentation.
249 lines
5.6 KiB
C
249 lines
5.6 KiB
C
/* GStreamer
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* Copyright (C) 2004 Wim Taymans <wim@fluendo.com>
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*
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* gstmessage.c: GstMessage 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 <string.h> /* memcpy */
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#include "gst_private.h"
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#include "gstdata_private.h"
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#include "gstinfo.h"
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#include "gstmemchunk.h"
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#include "gstmessage.h"
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#include "gsttag.h"
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#ifndef GST_DISABLE_TRACE
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/* #define GST_WITH_ALLOC_TRACE */
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#include "gsttrace.h"
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static GstAllocTrace *_message_trace;
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#endif
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static GstMemChunk *chunk;
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/* #define MEMPROF */
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GType _gst_message_type;
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void
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_gst_message_initialize (void)
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{
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/* register the type */
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_gst_message_type = g_boxed_type_register_static ("GstMessage",
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(GBoxedCopyFunc) gst_data_copy, (GBoxedFreeFunc) gst_data_unref);
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#ifndef GST_DISABLE_TRACE
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_message_trace = gst_alloc_trace_register (GST_MESSAGE_TRACE_NAME);
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#endif
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chunk = gst_mem_chunk_new ("GstMessageChunk", sizeof (GstMessage),
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sizeof (GstMessage) * 50, 0);
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}
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static GstMessage *
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_gst_message_copy (GstMessage * message)
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{
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GstMessage *copy;
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GST_CAT_INFO (GST_CAT_MESSAGE, "copy message %p", message);
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copy = gst_mem_chunk_alloc (chunk);
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#ifndef GST_DISABLE_TRACE
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gst_alloc_trace_new (_message_trace, copy);
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#endif
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memcpy (copy, message, sizeof (GstMessage));
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if (GST_MESSAGE_SRC (copy)) {
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gst_object_ref (GST_MESSAGE_SRC (copy));
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}
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/* FIXME copy/ref additional fields */
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switch (GST_MESSAGE_TYPE (message)) {
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case GST_MESSAGE_TAG:
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copy->message_data.structure.structure =
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gst_tag_list_copy ((GstTagList *) message->message_data.structure.
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structure);
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break;
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default:
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break;
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}
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return copy;
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}
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static void
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_gst_message_free (GstMessage * message)
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{
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GST_CAT_INFO (GST_CAT_MESSAGE, "freeing message %p", message);
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if (GST_MESSAGE_SRC (message)) {
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gst_object_unref (GST_MESSAGE_SRC (message));
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}
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if (message->lock) {
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GST_MESSAGE_LOCK (message);
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GST_MESSAGE_SIGNAL (message);
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GST_MESSAGE_UNLOCK (message);
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}
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switch (GST_MESSAGE_TYPE (message)) {
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case GST_MESSAGE_ERROR:
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case GST_MESSAGE_WARNING:
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g_error_free (GST_MESSAGE_ERROR_GERROR (message));
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g_free (GST_MESSAGE_ERROR_DEBUG (message));
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break;
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case GST_MESSAGE_TAG:
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if (GST_IS_TAG_LIST (message->message_data.tag.list)) {
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gst_tag_list_free (message->message_data.tag.list);
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} else {
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g_warning ("tag message %p didn't contain a valid tag list!", message);
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GST_ERROR ("tag message %p didn't contain a valid tag list!", message);
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}
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break;
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default:
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break;
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}
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_GST_DATA_DISPOSE (GST_DATA (message));
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#ifndef GST_DISABLE_TRACE
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gst_alloc_trace_free (_message_trace, message);
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#endif
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gst_mem_chunk_free (chunk, message);
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}
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GType
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gst_message_get_type (void)
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{
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return _gst_message_type;
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}
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/**
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* gst_message_new:
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* @type: The type of the new message
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*
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* Allocate a new message of the given type.
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*
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* Returns: A new message.
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*
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* MT safe.
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*/
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GstMessage *
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gst_message_new (GstMessageType type, GstObject * src)
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{
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GstMessage *message;
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message = gst_mem_chunk_alloc0 (chunk);
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#ifndef GST_DISABLE_TRACE
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gst_alloc_trace_new (_message_trace, message);
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#endif
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GST_CAT_INFO (GST_CAT_MESSAGE, "creating new message %p %d", message, type);
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_GST_DATA_INIT (GST_DATA (message),
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_gst_message_type,
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0,
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(GstDataFreeFunction) _gst_message_free,
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(GstDataCopyFunction) _gst_message_copy);
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GST_MESSAGE_TYPE (message) = type;
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GST_MESSAGE_TIMESTAMP (message) = G_GINT64_CONSTANT (0);
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gst_object_ref (src);
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GST_MESSAGE_SRC (message) = src;
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return message;
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}
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/**
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* gst_message_new_eos:
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*
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* Create a new eos message.
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*
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* Returns: The new eos message.
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*
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* MT safe.
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*/
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GstMessage *
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gst_message_new_eos (GstObject * src)
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{
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GstMessage *message;
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message = gst_message_new (GST_MESSAGE_EOS, src);
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return message;
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}
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/**
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* gst_message_new_error:
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*
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* Create a new error message.
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*
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* Returns: The new error message.
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*
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* MT safe.
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*/
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GstMessage *
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gst_message_new_error (GstObject * src, GError * error, gchar * debug)
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{
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GstMessage *message;
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message = gst_message_new (GST_MESSAGE_ERROR, src);
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GST_MESSAGE_ERROR_GERROR (message) = error;
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GST_MESSAGE_ERROR_DEBUG (message) = debug;
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return message;
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}
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/**
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* gst_message_new_warning:
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*
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* Create a new warning message.
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*
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* Returns: The new warning message.
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*
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* MT safe.
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*/
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GstMessage *
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gst_message_new_warning (GstObject * src, GError * error, gchar * debug)
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{
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GstMessage *message;
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message = gst_message_new (GST_MESSAGE_WARNING, src);
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GST_MESSAGE_WARNING_GERROR (message) = error;
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GST_MESSAGE_WARNING_DEBUG (message) = debug;
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return message;
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}
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/**
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* gst_message_new_tag:
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*
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* Create a new tag message.
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*
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* Returns: The new tag message.
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*
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* MT safe.
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*/
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GstMessage *
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gst_message_new_tag (GstObject * src, GstTagList * tag_list)
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{
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GstMessage *message;
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message = gst_message_new (GST_MESSAGE_TAG, src);
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GST_MESSAGE_TAG_LIST (message) = tag_list;
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return message;
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}
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