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103 lines
2.9 KiB
C
103 lines
2.9 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., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, 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
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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
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* @GST_FORMAT_PERCENT: percentage of stream
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*
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* Standard predefined formats
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*/
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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, /* samples for raw audio, frames/fields for raw video */
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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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*
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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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gchar *nick;
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gchar *description;
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};
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void _gst_format_initialize (void);
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/* register a new format */
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GstFormat gst_format_register (const gchar *nick,
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const gchar *description);
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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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gboolean gst_formats_contains (const GstFormat *formats, GstFormat format);
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/* query for format details */
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G_CONST_RETURN GstFormatDefinition*
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gst_format_get_details (GstFormat format);
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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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