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97 lines
3 KiB
C
97 lines
3 KiB
C
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/* GStreamer
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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* <2005> Wim Taymans <wim@fluendo.com>
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*
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* gsttask.h: Streaming tasks
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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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#ifndef __GST_TASK_H__
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#define __GST_TASK_H__
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#include <gst/gstobject.h>
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G_BEGIN_DECLS
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typedef void (*GstTaskFunction) (void *data);
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/* --- standard type macros --- */
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#define GST_TYPE_TASK (gst_task_get_type ())
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#define GST_TASK(task) (G_TYPE_CHECK_INSTANCE_CAST ((task), GST_TYPE_TASK, GstTask))
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#define GST_IS_TASK(task) (G_TYPE_CHECK_INSTANCE_TYPE ((task), GST_TYPE_TASK))
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#define GST_TASK_CLASS(tclass) (G_TYPE_CHECK_CLASS_CAST ((tclass), GST_TYPE_TASK, GstTaskClass))
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#define GST_IS_TASK_CLASS(tclass) (G_TYPE_CHECK_CLASS_TYPE ((tclass), GST_TYPE_TASK))
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#define GST_TASK_GET_CLASS(task) (G_TYPE_INSTANCE_GET_CLASS ((task), GST_TYPE_TASK, GstTaskClass))
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#define GST_TASK_CAST(task) ((GstTask*)(task))
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typedef struct _GstTask GstTask;
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typedef struct _GstTaskClass GstTaskClass;
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typedef enum {
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GST_TASK_STARTED,
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GST_TASK_STOPPED,
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GST_TASK_PAUSED,
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} GstTaskState;
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#define GST_TASK_STATE(task) (GST_TASK_CAST(task)->state)
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#define GST_TASK_GET_COND(task) (GST_TASK_CAST(task)->cond)
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#define GST_TASK_WAIT(task) g_cond_wait(GST_TASK_GET_COND (task), GST_GET_LOCK (task))
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#define GST_TASK_SIGNAL(task) g_cond_signal(GST_TASK_GET_COND (task))
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#define GST_TASK_BROADCAST(task) g_cond_breadcast(GST_TASK_GET_COND (task))
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struct _GstTask {
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GstObject object;
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/*< public >*/ /* with TASK_LOCK */
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GstTaskState state;
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GCond *cond;
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GstTaskFunction func;
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gpointer data;
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/*< private >*/
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gpointer _gst_reserved[GST_PADDING];
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};
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struct _GstTaskClass {
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GstObjectClass parent_class;
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/*< protected >*/
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gboolean (*start) (GstTask *task);
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gboolean (*stop) (GstTask *task);
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gboolean (*pause) (GstTask *task);
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/*< private >*/
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gpointer _gst_reserved[GST_PADDING];
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};
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GType gst_task_get_type (void);
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GstTask* gst_task_create (GstTaskFunction func, gpointer data);
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GstTaskState gst_task_get_state (GstTask *task);
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gboolean gst_task_start (GstTask *task);
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gboolean gst_task_stop (GstTask *task);
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gboolean gst_task_pause (GstTask *task);
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G_END_DECLS
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#endif /* __GST_TASK_H__ */
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