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gst-libs/gst/tag/: API: add GstTagDemux base class for simple tag demuxers.
Original commit message from CVS: * gst-libs/gst/tag/Makefile.am: * gst-libs/gst/tag/gsttagdemux.c: * gst-libs/gst/tag/gsttagdemux.h: API: add GstTagDemux base class for simple tag demuxers. * docs/libs/gst-plugins-base-libs-docs.sgml: * docs/libs/gst-plugins-base-libs-sections.txt: Add GstTagDemux to docs.
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Tim-Philipp Müller
parent
6e51063659
commit
f277cd8801
11
ChangeLog
11
ChangeLog
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@ -1,3 +1,14 @@
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2007-10-06 Tim-Philipp Müller <tim at centricular dot net>
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* gst-libs/gst/tag/Makefile.am:
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* gst-libs/gst/tag/gsttagdemux.c:
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* gst-libs/gst/tag/gsttagdemux.h:
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API: add GstTagDemux base class for simple tag demuxers.
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* docs/libs/gst-plugins-base-libs-docs.sgml:
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* docs/libs/gst-plugins-base-libs-sections.txt:
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Add GstTagDemux to docs.
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2007-10-05 Sebastian Dröge <slomo@circular-chaos.org>
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* gst-libs/gst/rtp/gstrtpbuffer.c:
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@ -64,6 +64,7 @@
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<!ENTITY GstTag SYSTEM "xml/gsttag.xml">
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<!ENTITY GstTagVorbis SYSTEM "xml/gsttagvorbis.xml">
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<!ENTITY GstTagID3 SYSTEM "xml/gsttagid3.xml">
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<!ENTITY GstTagDemux SYSTEM "xml/gsttagdemux.xml">
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<!-- utils -->
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<!ENTITY GstPBUtils SYSTEM "xml/gstpbutils.xml">
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<!ENTITY GstPBUtilsDescriptions SYSTEM "xml/gstpbutilsdescriptions.xml">
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@ -240,6 +241,7 @@
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&GstTag;
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&GstTagVorbis;
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&GstTagID3;
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&GstTagDemux;
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</chapter>
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<chapter id="gstreamer-base-utils">
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@ -1348,6 +1348,14 @@ gst_tag_from_id3_user_tag
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gst_tag_to_id3_tag
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</SECTION>
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<SECTION>
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<FILE>gsttagdemux</FILE>
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<INCLUDE>gst/tag/gsttagdemux.h</INCLUDE>
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GstTagDemux
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GstTagDemuxClass
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GstTagDemuxResult
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</SECTION>
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# base utils
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<SECTION>
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@ -2,13 +2,13 @@ libgsttagincludedir = \
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$(includedir)/gstreamer-@GST_MAJORMINOR@/gst/tag
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libgsttaginclude_HEADERS = \
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tag.h
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tag.h gsttagdemux.h
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lib_LTLIBRARIES = libgsttag-@GST_MAJORMINOR@.la
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libgsttag_@GST_MAJORMINOR@_la_SOURCES = gstvorbistag.c gstid3tag.c tags.c
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libgsttag_@GST_MAJORMINOR@_la_CFLAGS = $(GST_PLUGINS_BASE_CFLAGS) $(GST_CFLAGS)
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libgsttag_@GST_MAJORMINOR@_la_LIBADD = $(GST_LIBS)
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libgsttag_@GST_MAJORMINOR@_la_SOURCES = gstvorbistag.c gstid3tag.c tags.c gsttagdemux.c
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libgsttag_@GST_MAJORMINOR@_la_CFLAGS = $(GST_BASE_CFLAGS) $(GST_PLUGINS_BASE_CFLAGS) $(GST_CFLAGS)
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libgsttag_@GST_MAJORMINOR@_la_LIBADD = $(GST_BASE_LIBS) $(GST_LIBS)
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libgsttag_@GST_MAJORMINOR@_la_LDFLAGS = $(GST_LIB_LDFLAGS) $(GST_ALL_LDFLAGS) $(GST_LT_LDFLAGS)
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noinst_HEADERS = gsttageditingprivate.h
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1453
gst-libs/gst/tag/gsttagdemux.c
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1453
gst-libs/gst/tag/gsttagdemux.c
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File diff suppressed because it is too large
Load diff
140
gst-libs/gst/tag/gsttagdemux.h
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140
gst-libs/gst/tag/gsttagdemux.h
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@ -0,0 +1,140 @@
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/* 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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* Since: 0.10.15
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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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/**
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* GstTagDemux:
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*
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* Opaque #GstTagDemux structure.
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*
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* Since: 0.10.15
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*/
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struct _GstTagDemux
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{
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GstElement element;
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/*< private >*/
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GstTagDemuxPrivate *priv;
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gpointer reserved[GST_PADDING];
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};
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/**
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* GstTagDemuxClass:
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* @parent_class: the parent class.
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* @min_start_size: minimum size required to identify a tag at the start and
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* determine its total size. Set to 0 if not interested in start tags.
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* Subclasses should set this in their class_init function.
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* @min_end_size: minimum size required to identify a tag at the end and
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* determine its total size. Set to 0 if not interested in end tags.
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* Subclasses should set this in their class_init function.
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* @identify_tag: identify tag and determine the size required to parse the
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* tag. Buffer may be larger than the specified minimum size.
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* Subclassed MUST override this vfunc in their class_init function.
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* @parse_tag: parse the tag. Buffer will be exactly of the size determined by
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* the identify_tag vfunc before. The parse_tag vfunc may change the size
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* stored in *tag_size and return GST_TAG_DEMUX_RESULT_AGAIN to request a
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* larger or smaller buffer. It is also permitted to adjust the tag_size to a
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* smaller value and then return GST_TAG_DEMUX_RESULT_OK in one go.
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* Subclassed MUST override the parse_tag vfunc in their class_init function.
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* @merge_tags: merge start and end tags. Subclasses may want to override this
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* vfunc to allow prioritising of start or end tag according to user
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* preference. Note that both start_tags and end_tags may be NULL. By default
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* start tags are prefered over end tags.
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*
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* The #GstTagDemuxClass structure. See documentation at beginning of section
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* for details about what subclasses need to override and do.
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*
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* Since: 0.10.15
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*/
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struct _GstTagDemuxClass
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{
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GstElementClass parent_class;
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/* minimum size required to identify a tag at the start and determine
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* its total size */
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guint min_start_size;
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/* minimum size required to identify a tag at the end and determine
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* its total size */
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guint min_end_size;
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/* vtable */
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/* identify tag and determine the size required to parse the tag */
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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 once it is identified and its size is known */
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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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/* merge start and end tags (optional) */
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GstTagList * (*merge_tags) (GstTagDemux * demux,
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const GstTagList * start_tags,
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const GstTagList * end_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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