2004-12-08 18:05:14 +00:00
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/* 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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More MT fixes, added design document describing refcounting policies used in GStreamer and locking involved.
Original commit message from CVS:
* docs/design/part-MT-refcounting.txt:
* docs/design/part-conventions.txt:
* gst/gstbin.c: (gst_bin_set_index), (gst_bin_set_clock),
(gst_bin_add_func), (gst_bin_remove_func),
(gst_bin_iterate_elements), (gst_bin_change_state),
(gst_bin_dispose), (gst_bin_get_by_name_recurse_up):
* gst/gstcaps.c:
* gst/gstelement.c: (gst_element_add_pad),
(gst_element_remove_pad), (pad_compare_name),
(gst_element_get_static_pad), (gst_element_get_request_pad),
(gst_element_get_pad), (gst_element_iterate_pads),
(gst_element_class_get_pad_template_list),
(gst_element_class_get_pad_template), (gst_element_get_random_pad),
(gst_element_get_event_masks), (gst_element_send_event),
(gst_element_seek), (gst_element_get_query_types),
(gst_element_query), (gst_element_get_formats),
(gst_element_convert), (gst_element_post_message),
(gst_element_set_locked_state), (gst_element_get_state),
(gst_element_set_state), (gst_element_pads_activate),
(gst_element_dispose), (gst_element_set_manager_func),
(gst_element_get_manager):
* gst/gstelement.h:
* gst/gstiterator.c: (gst_iterator_new), (gst_list_iterator_next),
(gst_list_iterator_resync), (gst_list_iterator_free),
(gst_iterator_new_list):
* gst/gstiterator.h:
* gst/gstmessage.c: (_gst_message_copy):
* gst/gstobject.c: (gst_object_class_init), (gst_object_init),
(gst_object_ref), (gst_object_unref), (gst_object_sink),
(gst_object_replace), (gst_object_dispose),
(gst_object_dispatch_properties_changed), (gst_object_set_name),
(gst_object_set_parent), (gst_object_get_parent),
(gst_object_unparent), (gst_object_check_uniqueness),
(gst_object_get_path_string):
* gst/gstobject.h:
* gst/gstpad.c: (gst_pad_dispose), (gst_pad_set_active),
(gst_pad_is_active), (gst_pad_set_blocked_async),
(gst_pad_is_blocked), (gst_pad_unlink), (gst_pad_is_linked),
(gst_pad_link_prepare_filtered), (gst_pad_link_filtered),
(gst_pad_get_real_parent), (gst_pad_relink_filtered),
(gst_pad_get_peer), (gst_pad_realize), (gst_pad_get_allowed_caps),
(gst_pad_alloc_buffer), (gst_pad_push), (gst_pad_pull),
(gst_pad_pull_range), (gst_pad_push_event):
* gst/gstpad.h:
* gst/gstpipeline.c: (gst_pipeline_init), (gst_pipeline_dispose),
(is_eos), (pipeline_bus_handler):
* gst/gstutils.c: (gst_element_get_compatible_pad_filtered),
(gst_element_link_pads_filtered), (gst_element_unlink):
* gst/parse/grammar.y:
* tools/gst-compprep.c: (main):
* tools/gst-inspect.c: (print_pad_info):
* tools/gst-launch.c: (main):
* tools/gst-xmlinspect.c: (print_element_info):
More MT fixes, added design document describing refcounting
policies used in GStreamer and locking involved.
Fixed unsafe ghostpad dereffing.
Removed old unsafe methods.
2004-12-13 11:33:55 +00:00
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GST_CAT_INFO (GST_CAT_MESSAGE, "copy message %p", message);
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2004-12-08 18:05:14 +00:00
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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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More MT fixes, added design document describing refcounting policies used in GStreamer and locking involved.
Original commit message from CVS:
* docs/design/part-MT-refcounting.txt:
* docs/design/part-conventions.txt:
* gst/gstbin.c: (gst_bin_set_index), (gst_bin_set_clock),
(gst_bin_add_func), (gst_bin_remove_func),
(gst_bin_iterate_elements), (gst_bin_change_state),
(gst_bin_dispose), (gst_bin_get_by_name_recurse_up):
* gst/gstcaps.c:
* gst/gstelement.c: (gst_element_add_pad),
(gst_element_remove_pad), (pad_compare_name),
(gst_element_get_static_pad), (gst_element_get_request_pad),
(gst_element_get_pad), (gst_element_iterate_pads),
(gst_element_class_get_pad_template_list),
(gst_element_class_get_pad_template), (gst_element_get_random_pad),
(gst_element_get_event_masks), (gst_element_send_event),
(gst_element_seek), (gst_element_get_query_types),
(gst_element_query), (gst_element_get_formats),
(gst_element_convert), (gst_element_post_message),
(gst_element_set_locked_state), (gst_element_get_state),
(gst_element_set_state), (gst_element_pads_activate),
(gst_element_dispose), (gst_element_set_manager_func),
(gst_element_get_manager):
* gst/gstelement.h:
* gst/gstiterator.c: (gst_iterator_new), (gst_list_iterator_next),
(gst_list_iterator_resync), (gst_list_iterator_free),
(gst_iterator_new_list):
* gst/gstiterator.h:
* gst/gstmessage.c: (_gst_message_copy):
* gst/gstobject.c: (gst_object_class_init), (gst_object_init),
(gst_object_ref), (gst_object_unref), (gst_object_sink),
(gst_object_replace), (gst_object_dispose),
(gst_object_dispatch_properties_changed), (gst_object_set_name),
(gst_object_set_parent), (gst_object_get_parent),
(gst_object_unparent), (gst_object_check_uniqueness),
(gst_object_get_path_string):
* gst/gstobject.h:
* gst/gstpad.c: (gst_pad_dispose), (gst_pad_set_active),
(gst_pad_is_active), (gst_pad_set_blocked_async),
(gst_pad_is_blocked), (gst_pad_unlink), (gst_pad_is_linked),
(gst_pad_link_prepare_filtered), (gst_pad_link_filtered),
(gst_pad_get_real_parent), (gst_pad_relink_filtered),
(gst_pad_get_peer), (gst_pad_realize), (gst_pad_get_allowed_caps),
(gst_pad_alloc_buffer), (gst_pad_push), (gst_pad_pull),
(gst_pad_pull_range), (gst_pad_push_event):
* gst/gstpad.h:
* gst/gstpipeline.c: (gst_pipeline_init), (gst_pipeline_dispose),
(is_eos), (pipeline_bus_handler):
* gst/gstutils.c: (gst_element_get_compatible_pad_filtered),
(gst_element_link_pads_filtered), (gst_element_unlink):
* gst/parse/grammar.y:
* tools/gst-compprep.c: (main):
* tools/gst-inspect.c: (print_pad_info):
* tools/gst-launch.c: (main):
* tools/gst-xmlinspect.c: (print_element_info):
More MT fixes, added design document describing refcounting
policies used in GStreamer and locking involved.
Fixed unsafe ghostpad dereffing.
Removed old unsafe methods.
2004-12-13 11:33:55 +00:00
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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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2004-12-08 18:05:14 +00:00
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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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2005-01-06 18:17:12 +00:00
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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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2004-12-08 18:05:14 +00:00
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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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2004-12-13 14:49:11 +00:00
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case GST_MESSAGE_WARNING:
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g_error_free (GST_MESSAGE_ERROR_GERROR (message));
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2004-12-08 18:05:14 +00:00
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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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2005-01-06 18:17:12 +00:00
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*
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* MT safe.
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2004-12-08 18:05:14 +00:00
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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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2005-01-06 18:17:12 +00:00
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*
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* MT safe.
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2004-12-08 18:05:14 +00:00
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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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2005-01-06 18:17:12 +00:00
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*
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* MT safe.
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2004-12-08 18:05:14 +00:00
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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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2004-12-13 14:49:11 +00:00
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GST_MESSAGE_ERROR_GERROR (message) = error;
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2004-12-08 18:05:14 +00:00
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GST_MESSAGE_ERROR_DEBUG (message) = debug;
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return message;
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}
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2004-12-13 14:49:11 +00:00
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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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2005-01-06 18:17:12 +00:00
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*
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* MT safe.
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2004-12-13 14:49:11 +00:00
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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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2004-12-08 18:05:14 +00:00
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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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2005-01-06 18:17:12 +00:00
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*
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* MT safe.
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2004-12-08 18:05:14 +00:00
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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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gst/gstmessage.h (GstMessageType): Turned into flags. Added
Original commit message from CVS:
2005-02-21 Andy Wingo <wingo@pobox.com>
* gst/gstmessage.h (GstMessageType): Turned into flags. Added
GST_MESSAGE_ANY as an OR of all flags.
(GST_MESSAGE_PARSE_STATE_CHANGED): New terrible macro. Will be
made into a function soon.
(GstMessage): Add a state_changed structure to the union. The
union will die soon in favor of a single GstStructure tho.
(gst_message_new_state_changed): New API.
* gst/gstmessage.c (gst_message_new_state_changed): New API.
* tools/gst-launch.c (check_intr): Set the state of the pipeline
to PAUSED here; the poll will catch the state change.
(event_loop): New function, polls the pipeline bus for events. Can
block until eos/error/state change, or just handle the pending
events.
(main): Changed to use event_loop instead of running a main loop.
* gst/gstbus.h (gst_bus_poll): Added.
(gst_bus_peek): Return non-const; the message is refcounted
anyway.
* gst/gstbus.c (gst_bus_init): Replace the GAsyncQueue with a
GQueue+mutex to allow for _peek. (The wake-up functionality
provided by GAsyncQueue is already done by our socketpair.) All
queue users changed to lock, operate, and unlock.
(gst_bus_post): Check the retval of write(2) and handle errno.
(gst_bus_peek): Implemented.
(gst_bus_pop, gst_bus_peek, bus_callback): Because the socketpair
is used to wake up the GSource, read off the character in the
GSource handler and not in pop/peek. This is because a peek will
require a pop in the future, and you can't read off the char
twice. Deal with errno in the read.
(bus_callback): Interpret the handler return value as whether or
not to pop the message from the bus.
(poll_handler, poll_timeout, gst_bus_poll): New API. gst_bus_poll
is meant to replace the while(gst_bin_iterate()) idiom.
2005-02-21 11:54:55 +00:00
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/**
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* gst_message_new_state_change:
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*
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* Create a state change message.
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*
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* Returns: The new state change 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_state_changed (GstObject * src, GstElementState old,
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GstElementState new)
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{
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GstMessage *message;
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message = gst_message_new (GST_MESSAGE_STATE_CHANGED, src);
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message->message_data.state_changed.old = old;
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message->message_data.state_changed.new = new;
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return message;
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}
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