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c2f41a8906
Original commit message from CVS: Next big merge. Added GstBus for mainloop integration. Added GstMessage for sending notifications on the bus. Added GstTask as an abstraction for pipeline entry points. Removed GstThread. Removed Schedulers. Simplified GstQueue for multithreaded core. Made _link threadsafe, removed old capsnego. Added STREAM_LOCK and PREROLL_LOCK in GstPad. Added pad blocking functions. Reworked scheduling functions in GstPad to prepare for scheduling updates soon. Moved events out of data stream. Simplified GstEvent types. Added return values to push/pull. Removed clocking from GstElement. Added prototypes for state change function for next merge. Removed iterate from bins and state change management. Fixed some elements, disabled others for now. Fixed -inspect and -launch. Added check for GstBus.
109 lines
3.3 KiB
C
109 lines
3.3 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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* gstdata.h: Header for GstData objects (used for data passing)
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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_DATA_H__
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#define __GST_DATA_H__
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#include <glib-object.h>
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#include <gst/gstatomic.h>
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#include <gst/gsttypes.h>
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G_BEGIN_DECLS
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/* type */
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#define GST_DATA(data) ((GstData*)(data))
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#define GST_DATA_TYPE(data) (GST_DATA(data)->type)
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/* flags */
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#define GST_DATA_FLAGS(data) (GST_DATA(data)->flags)
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#define GST_DATA_FLAG_SHIFT(flag) (1<<(flag))
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#define GST_DATA_FLAG_IS_SET(data,flag) (GST_DATA_FLAGS(data) & (1<<(flag)))
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#define GST_DATA_FLAG_SET(data,flag) G_STMT_START{ (GST_DATA_FLAGS(data) |= (1<<(flag))); }G_STMT_END
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#define GST_DATA_FLAG_UNSET(data,flag) G_STMT_START{ (GST_DATA_FLAGS(data) &= ~(1<<(flag))); }G_STMT_END
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/* Macros for the GType */
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#define GST_TYPE_DATA (gst_data_get_type ())
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typedef struct _GstData GstData;
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typedef void (*GstDataFreeFunction) (GstData *data);
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typedef GstData* (*GstDataCopyFunction) (const GstData *data);
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typedef enum
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{
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GST_DATA_READONLY = 1,
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/* insert more */
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GST_DATA_FLAG_LAST = 8
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} GstDataFlags;
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/* refcount */
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#define GST_DATA_REFCOUNT(data) ((GST_DATA(data))->refcount)
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#define GST_DATA_REFCOUNT_VALUE(data) (gst_atomic_int_read (&(GST_DATA(data))->refcount))
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/* copy/free functions */
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#define GST_DATA_COPY_FUNC(data) (GST_DATA(data)->copy)
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#define GST_DATA_FREE_FUNC(data) (GST_DATA(data)->free)
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struct _GstData {
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GType type;
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/*< public >*/ /* with COW */
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/* refcounting */
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GstAtomicInt refcount;
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guint16 flags;
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/*< protected >*/
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/* utility function pointers, can override default */
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GstDataFreeFunction free; /* free the data */
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GstDataCopyFunction copy; /* copy the data */
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/*< private >*/
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gpointer _gst_reserved[GST_PADDING];
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};
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/* function used by subclasses only */
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void gst_data_init (GstData *data, GType type, guint16 flags,
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GstDataFreeFunction free,
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GstDataCopyFunction copy);
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void gst_data_dispose (GstData *data);
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void gst_data_copy_into (const GstData *data, GstData *target);
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/* basic operations on data */
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GstData* gst_data_copy (const GstData *data);
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gboolean gst_data_is_writable (GstData *data);
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GstData* gst_data_copy_on_write (GstData *data);
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/* reference counting */
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GstData* gst_data_ref (GstData* data);
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GstData* gst_data_ref_by_count (GstData* data, gint count);
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void gst_data_unref (GstData* data);
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/* GType for GstData */
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GType gst_data_get_type (void);
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G_END_DECLS
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#endif /* __GST_DATA_H__ */
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