mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-24 09:10:36 +00:00
147 lines
6.1 KiB
C
147 lines
6.1 KiB
C
/* GStreamer
|
|
* Copyright (C) 2004 Wim Taymans <wim@fluendo.com>
|
|
*
|
|
* gstmessage.h: Header for GstMessage subsystem
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#ifndef __GST_MESSAGE_H__
|
|
#define __GST_MESSAGE_H__
|
|
|
|
#include <gst/gsttypes.h>
|
|
#include <gst/gstminiobject.h>
|
|
#include <gst/gstobject.h>
|
|
#include <gst/gsttag.h>
|
|
#include <gst/gststructure.h>
|
|
|
|
G_BEGIN_DECLS
|
|
|
|
/**
|
|
* GstMessageType:
|
|
* @GST_MESSAGE_UNKNOWN: an undefined message
|
|
* @GST_MESSAGE_EOS: end-of-stream reached in a pipeline
|
|
* @GST_MESSAGE_ERROR: an error occured
|
|
* @GST_MESSAGE_WARNING: a warning occured.
|
|
* @GST_MESSAGE_INFO: an info message occured
|
|
* @GST_MESSAGE_TAG: a tag was found.
|
|
* @GST_MESSAGE_BUFFERING: the pipeline is buffering
|
|
* @GST_MESSAGE_STATE_CHANGED: a state change happened
|
|
* @GST_MESSAGE_STEP_DONE: a framestep finished.
|
|
* @GST_MESSAGE_NEW_CLOCK: a new clock was selected in the pipeline
|
|
* @GST_MESSAGE_STRUCTURE_CHANGE: the structure of the pipeline changed.
|
|
* @GST_MESSAGE_STREAM_STATUS: status about a stream, emitted when it starts,
|
|
* stops, errors, etc..
|
|
* @GST_MESSAGE_APPLICATION: message posted by the application, possibly
|
|
* via an application-specific element.
|
|
* @GST_MESSAGE_ANY: mask for all of the above messages.
|
|
*/
|
|
typedef enum
|
|
{
|
|
GST_MESSAGE_UNKNOWN = 0,
|
|
GST_MESSAGE_EOS = (1 << 0),
|
|
GST_MESSAGE_ERROR = (1 << 1),
|
|
GST_MESSAGE_WARNING = (1 << 2),
|
|
GST_MESSAGE_INFO = (1 << 3),
|
|
GST_MESSAGE_TAG = (1 << 4),
|
|
GST_MESSAGE_BUFFERING = (1 << 5),
|
|
GST_MESSAGE_STATE_CHANGED = (1 << 6),
|
|
GST_MESSAGE_STEP_DONE = (1 << 7),
|
|
GST_MESSAGE_NEW_CLOCK = (1 << 8),
|
|
GST_MESSAGE_STRUCTURE_CHANGE = (1 << 9),
|
|
GST_MESSAGE_STREAM_STATUS = (1 << 10),
|
|
GST_MESSAGE_APPLICATION = (1 << 11),
|
|
GST_MESSAGE_ANY = 0xffffffff
|
|
} GstMessageType;
|
|
|
|
#define GST_MESSAGE_TRACE_NAME "GstMessage"
|
|
|
|
typedef struct _GstMessage GstMessage;
|
|
typedef struct _GstMessageClass GstMessageClass;
|
|
|
|
#define GST_TYPE_MESSAGE (gst_message_get_type())
|
|
#define GST_IS_MESSAGE(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_MESSAGE))
|
|
#define GST_IS_MESSAGE_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_MESSAGE))
|
|
#define GST_MESSAGE_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_MESSAGE, GstMessageClass))
|
|
#define GST_MESSAGE(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_MESSAGE, GstMessage))
|
|
#define GST_MESSAGE_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_MESSAGE, GstMessageClass))
|
|
|
|
/* the lock is used to handle the synchronous handling of messages,
|
|
* the emiting thread is block until the handling thread processed
|
|
* the message using this mutex/cond pair */
|
|
#define GST_MESSAGE_GET_LOCK(message) (GST_MESSAGE(message)->lock)
|
|
#define GST_MESSAGE_LOCK(message) g_mutex_lock(GST_MESSAGE_GET_LOCK(message))
|
|
#define GST_MESSAGE_UNLOCK(message) g_mutex_unlock(GST_MESSAGE_GET_LOCK(message))
|
|
#define GST_MESSAGE_COND(message) (GST_MESSAGE(message)->cond)
|
|
#define GST_MESSAGE_WAIT(message) g_cond_wait(GST_MESSAGE_COND(message),GST_MESSAGE_GET_LOCK(message))
|
|
#define GST_MESSAGE_SIGNAL(message) g_cond_signal(GST_MESSAGE_COND(message))
|
|
|
|
#define GST_MESSAGE_TYPE(message) (GST_MESSAGE(message)->type)
|
|
#define GST_MESSAGE_TIMESTAMP(message) (GST_MESSAGE(message)->timestamp)
|
|
#define GST_MESSAGE_SRC(message) (GST_MESSAGE(message)->src)
|
|
|
|
struct _GstMessage
|
|
{
|
|
GstMiniObject mini_object;
|
|
|
|
/*< public > *//* with MESSAGE_LOCK */
|
|
GMutex *lock; /* lock and cond for async delivery */
|
|
GCond *cond;
|
|
|
|
/*< public > *//* with COW */
|
|
GstMessageType type;
|
|
guint64 timestamp;
|
|
GstObject *src;
|
|
|
|
GstStructure *structure;
|
|
|
|
/*< private > */
|
|
gpointer _gst_reserved[GST_PADDING];
|
|
};
|
|
|
|
struct _GstMessageClass {
|
|
GstMiniObjectClass mini_object_class;
|
|
};
|
|
|
|
void _gst_message_initialize (void);
|
|
|
|
GType gst_message_get_type (void);
|
|
|
|
/* refcounting */
|
|
#define gst_message_ref(msg) GST_MESSAGE (gst_mini_object_ref (GST_MINI_OBJECT (msg)))
|
|
#define gst_message_unref(msg) gst_mini_object_unref (GST_MINI_OBJECT (msg))
|
|
/* copy message */
|
|
#define gst_message_copy(msg) GST_MESSAGE (gst_mini_object_copy (GST_MINI_OBJECT (msg)))
|
|
#define gst_message_make_writable(msg) GST_MESSAGE (gst_mini_object_make_writable (GST_MINI_OBJECT (msg)))
|
|
|
|
GstMessage * gst_message_new_eos (GstObject * src);
|
|
GstMessage * gst_message_new_error (GstObject * src, GError * error, gchar * debug);
|
|
GstMessage * gst_message_new_warning (GstObject * src, GError * error, gchar * debug);
|
|
GstMessage * gst_message_new_tag (GstObject * src, GstTagList * tag_list);
|
|
GstMessage * gst_message_new_state_changed (GstObject * src, GstElementState old_state,
|
|
GstElementState new_state);
|
|
GstMessage * gst_message_new_application (GstStructure *structure);
|
|
|
|
void gst_message_parse_error (GstMessage *message, GError **gerror, gchar **debug);
|
|
void gst_message_parse_warning (GstMessage *message, GError **gerror, gchar **debug);
|
|
void gst_message_parse_tag (GstMessage *message, GstTagList **tag_list);
|
|
void gst_message_parse_state_changed (GstMessage *message, GstElementState *old_state,
|
|
GstElementState *new_state);
|
|
const GstStructure * gst_message_get_structure (GstMessage *message);
|
|
|
|
|
|
G_END_DECLS
|
|
#endif /* __GST_MESSAGE_H__ */
|