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8983cce9f6
We need different export decorators for the different libs. For now no actual change though, just rename before the release, and add prelude headers to define the new decorator to GST_EXPORT.
127 lines
3.6 KiB
C
127 lines
3.6 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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* gstformat.h: Header for GstFormat types used in queries and
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* seeking.
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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., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef __GST_FORMAT_H__
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#define __GST_FORMAT_H__
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#include <glib.h>
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#include <gst/gstiterator.h>
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G_BEGIN_DECLS
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/**
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* GstFormat:
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* @GST_FORMAT_UNDEFINED: undefined format
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* @GST_FORMAT_DEFAULT: the default format of the pad/element. This can be
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* samples for raw audio, frames/fields for raw video (some, but not all,
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* elements support this; use @GST_FORMAT_TIME if you don't have a good
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* reason to query for samples/frames)
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* @GST_FORMAT_BYTES: bytes
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* @GST_FORMAT_TIME: time in nanoseconds
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* @GST_FORMAT_BUFFERS: buffers (few, if any, elements implement this as of
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* May 2009)
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* @GST_FORMAT_PERCENT: percentage of stream (few, if any, elements implement
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* this as of May 2009)
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*
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* Standard predefined formats
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*/
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/* NOTE: don't forget to update the table in gstformat.c when changing
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* this enum */
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typedef enum {
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GST_FORMAT_UNDEFINED = 0, /* must be first in list */
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GST_FORMAT_DEFAULT = 1,
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GST_FORMAT_BYTES = 2,
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GST_FORMAT_TIME = 3,
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GST_FORMAT_BUFFERS = 4,
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GST_FORMAT_PERCENT = 5
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} GstFormat;
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/* a percentage is always relative to 1000000 */
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/**
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* GST_FORMAT_PERCENT_MAX:
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*
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* The PERCENT format is between 0 and this value
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*/
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#define GST_FORMAT_PERCENT_MAX G_GINT64_CONSTANT (1000000)
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/**
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* GST_FORMAT_PERCENT_SCALE:
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*
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* The value used to scale down the reported PERCENT format value to
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* its real value.
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*/
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#define GST_FORMAT_PERCENT_SCALE G_GINT64_CONSTANT (10000)
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typedef struct _GstFormatDefinition GstFormatDefinition;
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/**
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* GstFormatDefinition:
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* @value: The unique id of this format
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* @nick: A short nick of the format
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* @description: A longer description of the format
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* @quark: A quark for the nick
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*
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* A format definition
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*/
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struct _GstFormatDefinition
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{
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GstFormat value;
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const gchar *nick;
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const gchar *description;
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GQuark quark;
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};
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GST_API
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const gchar* gst_format_get_name (GstFormat format);
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GST_API
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GQuark gst_format_to_quark (GstFormat format);
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/* register a new format */
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GST_API
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GstFormat gst_format_register (const gchar *nick,
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const gchar *description);
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GST_API
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GstFormat gst_format_get_by_nick (const gchar *nick);
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/* check if a format is in an array of formats */
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GST_API
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gboolean gst_formats_contains (const GstFormat *formats, GstFormat format);
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/* query for format details */
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GST_API
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const GstFormatDefinition*
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gst_format_get_details (GstFormat format);
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GST_API
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GstIterator* gst_format_iterate_definitions (void);
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G_END_DECLS
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#endif /* __GST_FORMAT_H__ */
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