2 * Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
3 * 2000 Wim Taymans <wim.taymans@chello.be>
5 * gstformat.h: Header for GstFormat types used in queries and
8 * This library is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Library General Public
10 * License as published by the Free Software Foundation; either
11 * version 2 of the License, or (at your option) any later version.
13 * This library is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Library General Public License for more details.
18 * You should have received a copy of the GNU Library General Public
19 * License along with this library; if not, write to the
20 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
21 * Boston, MA 02111-1307, USA.
25 #ifndef __GST_FORMAT_H__
26 #define __GST_FORMAT_H__
30 #include <gst/gstiterator.h>
36 * @GST_FORMAT_UNDEFINED: undefined format
37 * @GST_FORMAT_DEFAULT: the default format of the pad/element
38 * @GST_FORMAT_BYTES: bytes
39 * @GST_FORMAT_TIME: time in nanoseconds
40 * @GST_FORMAT_BUFFERS: buffers
41 * @GST_FORMAT_PERCENT: percentage of stream
43 * Standard predefined formats
46 GST_FORMAT_UNDEFINED = 0, /* must be first in list */
47 GST_FORMAT_DEFAULT = 1, /* samples for raw audio, frames/fields for raw video */
50 GST_FORMAT_BUFFERS = 4,
51 GST_FORMAT_PERCENT = 5
54 /* a percentage is always relative to 1000000 */
56 * GST_FORMAT_PERCENT_MAX:
58 * The PERCENT format is between 0 and this value
60 #define GST_FORMAT_PERCENT_MAX G_GINT64_CONSTANT (1000000)
62 * GST_FORMAT_PERCENT_SCALE:
64 * The value used to scale down the reported PERCENT format value to
67 #define GST_FORMAT_PERCENT_SCALE G_GINT64_CONSTANT (10000)
69 typedef struct _GstFormatDefinition GstFormatDefinition;
72 * GstFormatDefinition:
73 * @value: The unique id of this format
74 * @nick: A short nick of the format
75 * @description: A longer description of the format
79 struct _GstFormatDefinition
86 void _gst_format_initialize (void);
88 /* register a new format */
89 GstFormat gst_format_register (const gchar *nick,
90 const gchar *description);
91 GstFormat gst_format_get_by_nick (const gchar *nick);
93 /* check if a format is in an array of formats */
94 gboolean gst_formats_contains (const GstFormat *formats, GstFormat format);
96 /* query for format details */
97 G_CONST_RETURN GstFormatDefinition*
98 gst_format_get_details (GstFormat format);
99 GstIterator* gst_format_iterate_definitions (void);
103 #endif /* __GST_FORMAT_H__ */