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 G_BEGIN_DECLS typedef enum
32 GST_FORMAT_UNDEFINED = 0, /* must be first in list */
33 GST_FORMAT_DEFAULT = 1, /* samples for audio, frames/fields for video */
36 GST_FORMAT_BUFFERS = 4,
37 GST_FORMAT_PERCENT = 5
40 /* a percentage is always relative to 1000000 */
41 #define GST_FORMAT_PERCENT_MAX G_GINT64_CONSTANT (1000000)
42 #define GST_FORMAT_PERCENT_SCALE G_GINT64_CONSTANT (10000)
44 typedef struct _GstFormatDefinition GstFormatDefinition;
46 struct _GstFormatDefinition
53 #ifdef G_HAVE_ISO_VARARGS
54 #define GST_FORMATS_FUNCTION(type, functionname, ...) \
55 static const GstFormat* \
56 functionname (type object) \
58 static const GstFormat formats[] = { \
64 #elif defined(G_HAVE_GNUC_VARARGS)
65 #define GST_FORMATS_FUNCTION(type, functionname, a...) \
66 static const GstFormat* \
67 functionname (type object) \
69 static const GstFormat formats[] = { \
77 void _gst_format_initialize (void);
79 /* register a new format */
80 GstFormat gst_format_register (const gchar * nick, const gchar * description);
81 GstFormat gst_format_get_by_nick (const gchar * nick);
83 /* check if a format is in an array of formats */
84 gboolean gst_formats_contains (const GstFormat * formats, GstFormat format);
86 /* query for format details */
87 G_CONST_RETURN GstFormatDefinition *gst_format_get_details (GstFormat format);
88 G_CONST_RETURN GList *gst_format_get_definitions (void);
91 #endif /* __GST_FORMAT_H__ */