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Original commit message from CVS: * configure.ac: * docs/plugins/Makefile.am: * docs/plugins/gst-plugins-good-plugins-docs.sgml: * docs/plugins/gst-plugins-good-plugins-sections.txt: * docs/plugins/gst-plugins-good-plugins.hierarchy: * docs/plugins/inspect/plugin-apetag.xml: * gst/apetag/Makefile.am: * gst/apetag/gstapedemux.c: * gst/apetag/gstapedemux.h: * gst/apetag/gsttagdemux.c: * gst/apetag/gsttagdemux.h: Add APE tag demuxer (#325649).
106 lines
3.8 KiB
C
106 lines
3.8 KiB
C
/* GStreamer Base Class for Tag Demuxing
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* Copyright (C) 2005 Jan Schmidt <thaytan@mad.scientist.com>
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* Copyright (C) 2006 Tim-Philipp Müller <tim centricular net>
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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_TAG_DEMUX_H__
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#define __GST_TAG_DEMUX_H__
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#include <gst/gst.h>
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G_BEGIN_DECLS
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#define GST_TYPE_TAG_DEMUX (gst_tag_demux_get_type())
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#define GST_TAG_DEMUX(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_TAG_DEMUX,GstTagDemux))
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#define GST_TAG_DEMUX_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_TAG_DEMUX,GstTagDemuxClass))
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#define GST_IS_TAG_DEMUX(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_TAG_DEMUX))
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#define GST_IS_TAG_DEMUX_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_TAG_DEMUX))
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typedef struct _GstTagDemux GstTagDemux;
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typedef struct _GstTagDemuxClass GstTagDemuxClass;
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typedef struct _GstTagDemuxPrivate GstTagDemuxPrivate;
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/**
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* GstTagDemuxResult:
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* @GST_TAG_DEMUX_RESULT_BROKEN_TAG: cannot parse tag, just skip it
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* @GST_TAG_DEMUX_RESULT_AGAIN : call again with less or more data
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* @GST_TAG_DEMUX_RESULT_OK : parsed tag successfully
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*
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* Result values from the parse_tag virtual function.
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*/
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typedef enum {
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GST_TAG_DEMUX_RESULT_BROKEN_TAG,
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GST_TAG_DEMUX_RESULT_AGAIN,
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GST_TAG_DEMUX_RESULT_OK
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} GstTagDemuxResult;
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struct _GstTagDemux
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{
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GstElement element;
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/* Minimum size required to identify a tag at the start and
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* determine its total size (0 = not interested in start) */
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guint min_start_size;
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/* Minimum size required to identify a tag at the end and
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* determine its total size (0 = not interested in end) */
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guint min_end_size;
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/* Prefer start tags over end tags (default: yes) */
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gboolean prefer_start_tag;
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/*< private >*/
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gpointer reserved[GST_PADDING];
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GstTagDemuxPrivate *priv;
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};
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/* Note: subclass must also add a sink pad template in its base_init */
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struct _GstTagDemuxClass
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{
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GstElementClass parent_class;
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/* vtable */
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/* Identify tag and determine the size required to parse the tag. Buffer
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* may be larger than the specified minimum size. */
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gboolean (*identify_tag) (GstTagDemux * demux,
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GstBuffer * buffer,
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gboolean start_tag,
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guint * tag_size);
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/* Parse the tag. Buffer should be exactly the size determined by
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* identify_tag() before. parse_tag() may change tag_size and return
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* GST_TAG_DEMUX_RESULT_AGAIN to request a larger or smaller buffer.
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* parse_tag() is also permitted to adjust tag_size to a smaller value
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* and return GST_TAG_DEMUX_RESULT_OK. */
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GstTagDemuxResult (*parse_tag) (GstTagDemux * demux,
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GstBuffer * buffer,
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gboolean start_tag,
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guint * tag_size,
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GstTagList ** tags);
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/*< private >*/
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gpointer reserved[GST_PADDING];
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};
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GType gst_tag_demux_get_type (void);
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G_END_DECLS
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#endif /* __GST_TAG_DEMUX_H__ */
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