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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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4368fad117
Original commit message from CVS: added GST_STR_FOURCC, which takes strings like "YUY2" instead of 'Y','U','Y','2'. better, I think <g>
100 lines
3.4 KiB
C
100 lines
3.4 KiB
C
/* GStreamer
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* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
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* 2000 Wim Taymans <wtay@chello.be>
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*
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* gstprops.h: Header for properties 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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#ifndef __GST_PROPS_H__
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#define __GST_PROPS_H__
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#include <glib.h>
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#include <parser.h> // NOTE: this is xml-config's fault
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// Include compatability defines: if libxml hasn't already defined these,
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// we have an old version 1.x
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#ifndef xmlChildrenNode
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#define xmlChildrenNode childs
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#define xmlRootNode root
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#endif
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typedef struct _GstProps GstProps;
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typedef enum {
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GST_PROPS_END_ID = 0,
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GST_PROPS_LIST_ID,
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GST_PROPS_INT_ID,
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GST_PROPS_INT_RANGE_ID,
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GST_PROPS_FLOAT_ID,
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GST_PROPS_FLOAT_RANGE_ID,
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GST_PROPS_FOURCC_ID,
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GST_PROPS_BOOL_ID,
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GST_PROPS_STRING_ID,
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GST_PROPS_LAST_ID = GST_PROPS_END_ID + 16,
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} GstPropsId;
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#define GST_MAKE_FOURCC(a,b,c,d) ((a)|(b)<<8|(c)<<16|(d)<<24)
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#define GST_STR_FOURCC(f) (((f)[0])|((f)[1]<<8)|((f)[2]<<16)|((f)[3]<<24))
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#define GST_PROPS_LIST(a...) GST_PROPS_LIST_ID,##a,NULL
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#define GST_PROPS_INT(a) GST_PROPS_INT_ID,(a)
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#define GST_PROPS_INT_RANGE(a,b) GST_PROPS_INT_RANGE_ID,(a),(b)
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#define GST_PROPS_FLOAT(a) GST_PROPS_FLOAT_ID,(a)
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#define GST_PROPS_FLOAT_RANGE(a,b) GST_PROPS_FLOAT_RANGE_ID,(a),(b)
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#define GST_PROPS_FOURCC(a) GST_PROPS_FOURCC_ID,(a)
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#define GST_PROPS_BOOLEAN(a) GST_PROPS_BOOL_ID,(a)
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#define GST_PROPS_STRING(a) GST_PROPS_STRING_ID,(a)
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struct _GstProps {
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gint refcount;
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GMutex *lock;
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GList *properties; /* real properties for this property */
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};
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/* initialize the subsystem */
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void _gst_props_initialize (void);
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GstProps* gst_props_new (const gchar *firstname, ...);
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GstProps* gst_props_newv (const gchar *firstname, va_list var_args);
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void gst_props_unref (GstProps *props);
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void gst_props_ref (GstProps *props);
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void gst_props_destroy (GstProps *props);
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GstProps* gst_props_copy (GstProps *props);
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GstProps* gst_props_copy_on_write (GstProps *props);
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GstProps* gst_props_merge (GstProps *props, GstProps *tomerge);
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gboolean gst_props_check_compatibility (GstProps *fromprops, GstProps *toprops);
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GstProps* gst_props_set (GstProps *props, const gchar *name, ...);
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gint gst_props_get_int (GstProps *props, const gchar *name);
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gulong gst_props_get_fourcc_int (GstProps *props, const gchar *name);
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gboolean gst_props_get_boolean (GstProps *props, const gchar *name);
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const gchar* gst_props_get_string (GstProps *props, const gchar *name);
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xmlNodePtr gst_props_save_thyself (GstProps *props, xmlNodePtr parent);
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GstProps* gst_props_load_thyself (xmlNodePtr parent);
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#endif /* __GST_PROPS_H__ */
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