gstreamer/gst/gstelementfactory.h

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/* GStreamer
* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
* 2000,2004 Wim Taymans <wim@fluendo.com>
*
* gstelement.h: Header for GstElement
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifndef __GST_ELEMENT_FACTORY_H__
#define __GST_ELEMENT_FACTORY_H__
typedef struct _GstElementFactory GstElementFactory;
typedef struct _GstElementFactoryClass GstElementFactoryClass;
#include <gst/gstconfig.h>
#include <gst/gstelement.h>
#include <gst/gstobject.h>
#include <gst/gstplugin.h>
#include <gst/gstpluginfeature.h>
#include <gst/gstiterator.h>
G_BEGIN_DECLS
/* FIXME 0.11: Move GstElementDetails into a private header and use it internally
* in GstElementFactory, GstElementClass and the registry
*/
typedef struct _GstElementDetails GstElementDetails;
/**
* GstElementDetails:
* @longname: long, english name
* @klass: string describing the type of element, as an unordered list
* separated with slashes ('/'). See draft-klass.txt of the design docs
* for more details and common types
* @description: what the element is about
* @author: who wrote this thing?
*
* This struct defines the public information about a #GstElement. It contains
* meta-data about the element that is mostly for the benefit of editors.
*
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* The @klass member can be used by applications to filter elements based
* on functionality.
*/
/* FIXME: need translatable stuff in here (how handle in registry)?
* can't we use _N("long name") in element implementations and use _(longname)
* in gst_element_factory_get_longname()
*/
struct _GstElementDetails
{
/*< public > */
gchar *longname;
gchar *klass;
gchar *description;
gchar *author;
/*< private >*/
gpointer _gst_reserved[GST_PADDING];
};
/**
* GST_ELEMENT_DETAILS:
* @longname: long, english name
* @klass: string describing the type of element, as an unordered list
* separated with slashes ('/'). See draft-klass.txt of the design docs
* for more details and common types
* @description: what the element is about
* @author: who wrote this element
*
* Macro to initialize #GstElementDetails.
*/
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#define GST_ELEMENT_DETAILS(longname,klass,description,author) \
And correct even more valid sparse warnings. Original commit message from CVS: * gst/gstelementfactory.h: * tests/check/elements/fakesink.c: * tests/check/elements/fakesrc.c: (setup_fakesrc): * tests/check/elements/fdsrc.c: (setup_fdsrc): * tests/check/elements/filesink.c: (setup_filesink): * tests/check/elements/filesrc.c: (setup_filesrc): * tests/check/elements/identity.c: (setup_identity): * tests/check/elements/tee.c: * tests/check/generic/sinks.c: * tests/check/generic/states.c: (setup), (teardown): * tests/check/gst/gst.c: * tests/check/gst/gstabi.c: * tests/check/gst/gstbin.c: * tests/check/gst/gstbus.c: (pull_messages): * tests/check/gst/gstcaps.c: * tests/check/gst/gstelement.c: * tests/check/gst/gstevent.c: * tests/check/gst/gstghostpad.c: * tests/check/gst/gstiterator.c: * tests/check/gst/gstmessage.c: * tests/check/gst/gstminiobject.c: (my_foo_init): * tests/check/gst/gstobject.c: (thread_name_object), (gst_object_suite): * tests/check/gst/gstpad.c: * tests/check/gst/gstplugin.c: * tests/check/gst/gstpoll.c: * tests/check/gst/gstquery.c: * tests/check/gst/gstsegment.c: * tests/check/gst/gststructure.c: * tests/check/gst/gstsystemclock.c: * tests/check/gst/gsttask.c: * tests/check/gst/gstutils.c: * tests/check/gst/gstvalue.c: * tests/check/gst/struct_hppa.h: * tests/check/gst/struct_i386.h: * tests/check/gst/struct_ppc32.h: * tests/check/gst/struct_ppc64.h: * tests/check/gst/struct_x86_64.h: * tests/check/libs/adapter.c: (create_and_fill_adapter): * tests/check/libs/basesrc.c: * tests/check/libs/controller.c: (GST_START_TEST): * tests/check/libs/gdp.c: * tests/check/libs/gstnetclientclock.c: * tests/check/libs/gstnettimeprovider.c: * tests/check/libs/libsabi.c: * tests/check/libs/struct_hppa.h: * tests/check/libs/struct_i386.h: * tests/check/libs/struct_ppc32.h: * tests/check/libs/struct_ppc64.h: * tests/check/libs/struct_x86_64.h: * tests/check/pipelines/cleanup.c: * tests/check/pipelines/simple-launch-lines.c: * tests/check/pipelines/stress.c: And correct even more valid sparse warnings. * win32/common/libgstreamer.def: Add gst_poll_fd_init to the list of symbols.
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{ longname, klass, description, author, {NULL} }
/**
* GST_IS_ELEMENT_DETAILS:
* @details: the #GstElementDetails to check
*
* Tests if element details are initialized.
*/
/* FIXME: what about adding '&& (*__gst_reserved==NULL)' */
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#define GST_IS_ELEMENT_DETAILS(details) ( \
(details) && ((details)->longname != NULL) && ((details)->klass != NULL) \
&& ((details)->description != NULL) && ((details)->author != NULL))
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#define GST_TYPE_ELEMENT_FACTORY (gst_element_factory_get_type())
#define GST_ELEMENT_FACTORY(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_ELEMENT_FACTORY,\
GstElementFactory))
#define GST_ELEMENT_FACTORY_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_ELEMENT_FACTORY,\
GstElementFactoryClass))
#define GST_IS_ELEMENT_FACTORY(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_ELEMENT_FACTORY))
#define GST_IS_ELEMENT_FACTORY_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_ELEMENT_FACTORY))
#define GST_ELEMENT_FACTORY_CAST(obj) ((GstElementFactory *)(obj))
/**
* GstElementFactory:
*
* The opaque #GstElementFactory data structure.
*/
struct _GstElementFactory {
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GstPluginFeature parent;
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GType type; /* unique GType of element or 0 if not loaded */
/* FIXME-0.11: deprecate this in favour of meta_data */
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GstElementDetails details;
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GList * staticpadtemplates;
guint numpadtemplates;
/* URI interface stuff */
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guint uri_type;
gchar ** uri_protocols;
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GList * interfaces; /* interfaces this element implements */
/*< private >*/
/* FIXME-0.11: move up and replace details */
gpointer meta_data;
gpointer _gst_reserved[GST_PADDING - 1];
};
struct _GstElementFactoryClass {
GstPluginFeatureClass parent_class;
gpointer _gst_reserved[GST_PADDING];
};
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GType gst_element_factory_get_type (void);
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GstElementFactory * gst_element_factory_find (const gchar *name);
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GType gst_element_factory_get_element_type (GstElementFactory *factory);
G_CONST_RETURN gchar * gst_element_factory_get_longname (GstElementFactory *factory);
G_CONST_RETURN gchar * gst_element_factory_get_klass (GstElementFactory *factory);
G_CONST_RETURN gchar * gst_element_factory_get_description (GstElementFactory *factory);
G_CONST_RETURN gchar * gst_element_factory_get_author (GstElementFactory *factory);
G_CONST_RETURN gchar * gst_element_factory_get_documentation_uri (GstElementFactory *factory);
G_CONST_RETURN gchar * gst_element_factory_get_icon_name (GstElementFactory *factory);
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guint gst_element_factory_get_num_pad_templates (GstElementFactory *factory);
G_CONST_RETURN GList * gst_element_factory_get_static_pad_templates (GstElementFactory *factory);
gint gst_element_factory_get_uri_type (GstElementFactory *factory);
gchar ** gst_element_factory_get_uri_protocols (GstElementFactory *factory);
gboolean gst_element_factory_has_interface (GstElementFactory *factory,
const gchar *interfacename);
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GstElement* gst_element_factory_create (GstElementFactory *factory,
const gchar *name);
GstElement* gst_element_factory_make (const gchar *factoryname, const gchar *name);
Makefile.am: Add check-exports target and run it as part of 'make check' (see #499140 and #493983). Original commit message from CVS: * Makefile.am: Add check-exports target and run it as part of 'make check' (see #499140 and #493983). * gst/gst_private.h: * gst/gstelementfactory.h: * gst/gstghostpad.c: (gst_proxy_pad_class_init): * gst/gstinfo.c: (_priv_gst_in_valgrind), (_gst_debug_init), (_priv_gst_in_valgrind): * gst/gstinfo.h: (GstLogFunction): * gst/gsttypefind.c: (type_find_debug), (GST_CAT_DEFAULT), (gst_type_find_register): * gst/gsttypefindfactory.c: (type_find_debug), (GST_CAT_DEFAULT), (gst_type_find_factory_get_type): * libs/gst/controller/gstcontroller.c: (GST_CAT_DEFAULT), (GST_CAT_DEFAULT), (parent_class), (priv_gst_controller_key), (gst_controller_new_valist), (gst_controller_new_list), (_gst_controller_dispose), (_gst_controller_class_init): * libs/gst/controller/gstcontrolsource.c: (GST_CAT_DEFAULT): * libs/gst/controller/gsthelper.c: (GST_CAT_DEFAULT), (GST_CAT_DEFAULT), (gst_object_uncontrol_properties), (gst_object_get_controller), (gst_object_set_controller), (gst_object_suggest_next_sync), (gst_object_sync_values), (gst_object_set_control_source), (gst_object_get_control_source), (gst_object_get_value_arrays), (gst_object_get_value_array), (gst_object_get_control_rate), (gst_object_set_control_rate): * libs/gst/controller/gstinterpolation.c: (GST_CAT_DEFAULT): * libs/gst/controller/lib.c: (GST_CAT_DEFAULT): Make some functions that should be static static; rename some private symbols so that they don't get exported; add some FIXME comments so we can move accidentally exported functions into our private section in 0.11. * win32/common/libgstreamer.def: Add gst_utils_get_timestamp().
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/* FIXME 0.11: move these two into our private headers */
void __gst_element_factory_add_static_pad_template (GstElementFactory *elementfactory,
GstStaticPadTemplate *templ);
void __gst_element_factory_add_interface (GstElementFactory *elementfactory,
const gchar *interfacename);
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gboolean gst_element_register (GstPlugin *plugin, const gchar *name,
guint rank, GType type);
/* Factory list functions */
/**
* GstFactoryListType:
* @GST_ELEMENT_FACTORY_TYPE_DECODER: Decoder elements
* @GST_ELEMENT_FACTORY_TYPE_ENCODER: Encoder elements
* @GST_ELEMENT_FACTORY_TYPE_SINK: Sink elements
* @GST_ELEMENT_FACTORY_TYPE_SRC: Source elements
* @GST_ELEMENT_FACTORY_TYPE_MUXER: Muxer elements
* @GST_ELEMENT_FACTORY_TYPE_DEMUXER: Demuxer elements
* @GST_ELEMENT_FACTORY_TYPE_PARSER: Parser elements
* @GST_ELEMENT_FACTORY_TYPE_PAYLOADER: Payloader elements
* @GST_ELEMENT_FACTORY_TYPE_DEPAYLOADER: Depayloader elements
* @GST_ELEMENT_FACTORY_TYPE_MAX_ELEMENTS: Private, do not use
* @GST_ELEMENT_FACTORY_TYPE_MEDIA_VIDEO: Elements handling video media types
* @GST_ELEMENT_FACTORY_TYPE_MEDIA_AUDIO: Elements handling audio media types
* @GST_ELEMENT_FACTORY_TYPE_MEDIA_IMAGE: Elements handling image media types
* @GST_ELEMENT_FACTORY_TYPE_MEDIA_SUBTITLE: Elements handling subtitle media types
* @GST_ELEMENT_FACTORY_TYPE_MEDIA_METADATA: Elements handling metadata media types
*
* The type of #GstElementFactory to filter.
*
* All @GstFactoryListType up to @GST_ELEMENT_FACTORY_TYPE_MAX_ELEMENTS are exclusive.
*
* If one or more of the MEDIA types are specified, then only elements
* matching the specified media types will be selected.
*
* Since: 0.10.31
*/
typedef guint64 GstElementFactoryListType;
#define GST_ELEMENT_FACTORY_TYPE_DECODER (G_GUINT64_CONSTANT (1) << 0)
#define GST_ELEMENT_FACTORY_TYPE_ENCODER (G_GUINT64_CONSTANT (1) << 1)
#define GST_ELEMENT_FACTORY_TYPE_SINK (G_GUINT64_CONSTANT (1) << 2)
#define GST_ELEMENT_FACTORY_TYPE_SRC (G_GUINT64_CONSTANT (1) << 3)
#define GST_ELEMENT_FACTORY_TYPE_MUXER (G_GUINT64_CONSTANT (1) << 4)
#define GST_ELEMENT_FACTORY_TYPE_DEMUXER (G_GUINT64_CONSTANT (1) << 5)
#define GST_ELEMENT_FACTORY_TYPE_PARSER (G_GUINT64_CONSTANT (1) << 6)
#define GST_ELEMENT_FACTORY_TYPE_PAYLOADER (G_GUINT64_CONSTANT (1) << 7)
#define GST_ELEMENT_FACTORY_TYPE_DEPAYLOADER (G_GUINT64_CONSTANT (1) << 8)
#define GST_ELEMENT_FACTORY_TYPE_FORMATTER (G_GUINT64_CONSTANT (1) << 9)
#define GST_ELEMENT_FACTORY_TYPE_MAX_ELEMENTS (G_GUINT64_CONSTANT (1) << 48)
#define GST_ELEMENT_FACTORY_TYPE_MEDIA_VIDEO (G_GUINT64_CONSTANT (1) << 49)
#define GST_ELEMENT_FACTORY_TYPE_MEDIA_AUDIO (G_GUINT64_CONSTANT (1) << 50)
#define GST_ELEMENT_FACTORY_TYPE_MEDIA_IMAGE (G_GUINT64_CONSTANT (1) << 51)
#define GST_ELEMENT_FACTORY_TYPE_MEDIA_SUBTITLE (G_GUINT64_CONSTANT (1) << 52)
#define GST_ELEMENT_FACTORY_TYPE_MEDIA_METADATA (G_GUINT64_CONSTANT (1) << 53)
/**
* GST_ELEMENT_FACTORY_TYPE_ANY:
*
* Elements of any of the defined GST_ELEMENT_FACTORY_LIST types
*
* Since: 0.10.31
*/
#define GST_ELEMENT_FACTORY_TYPE_ANY G_GUINT64_CONSTANT ((1 << 49) - 1)
/**
* GST_ELEMENT_FACTORY_TYPE_MEDIA_ANY:
*
* Elements matching any of the defined GST_ELEMENT_FACTORY_TYPE_MEDIA types
*
* Note: Do not use this if you wish to not filter against any of the defined
* media types. If you wish to do this, simply don't specify any
* GST_ELEMENT_FACTORY_TYPE_MEDIA flag.
*
* Since: 0.10.31
*/
#define GST_ELEMENT_FACTORY_TYPE_MEDIA_ANY (~G_GUINT64_CONSTANT (0) << 48)
/**
* GST_ELEMENT_FACTORY_TYPE_VIDEO_ENCODER:
*
* All encoders handling video or image media types
*
* Since: 0.10.31
*/
#define GST_ELEMENT_FACTORY_TYPE_VIDEO_ENCODER (GST_ELEMENT_FACTORY_TYPE_ENCODER | GST_ELEMENT_FACTORY_TYPE_MEDIA_VIDEO | GST_ELEMENT_FACTORY_TYPE_MEDIA_IMAGE)
/**
* GST_ELEMENT_FACTORY_TYPE_AUDIO_ENCODER:
*
* All encoders handling audio media types
*
* Since: 0.10.31
*/
#define GST_ELEMENT_FACTORY_TYPE_AUDIO_ENCODER (GST_ELEMENT_FACTORY_TYPE_ENCODER | GST_ELEMENT_FACTORY_TYPE_MEDIA_AUDIO)
/**
* GST_ELEMENT_FACTORY_TYPE_AUDIOVIDEO_SINKS:
*
* All sinks handling audio, video or image media types
*
* Since: 0.10.31
*/
#define GST_ELEMENT_FACTORY_TYPE_AUDIOVIDEO_SINKS (GST_ELEMENT_FACTORY_TYPE_SINK | GST_ELEMENT_FACTORY_TYPE_MEDIA_AUDIO | GST_ELEMENT_FACTORY_TYPE_MEDIA_VIDEO | GST_ELEMENT_FACTORY_TYPE_MEDIA_IMAGE)
/**
* GST_ELEMENT_FACTORY_TYPE_DECODABLE:
*
* All elements used to 'decode' streams (decoders, demuxers, parsers, depayloaders)
*
* Since: 0.10.31
*/
#define GST_ELEMENT_FACTORY_TYPE_DECODABLE \
(GST_ELEMENT_FACTORY_TYPE_DECODER | GST_ELEMENT_FACTORY_TYPE_DEMUXER | GST_ELEMENT_FACTORY_TYPE_DEPAYLOADER | GST_ELEMENT_FACTORY_TYPE_PARSER)
/* Element klass defines */
#define GST_ELEMENT_FACTORY_KLASS_DECODER "Decoder"
#define GST_ELEMENT_FACTORY_KLASS_ENCODER "Encoder"
#define GST_ELEMENT_FACTORY_KLASS_SINK "Sink"
#define GST_ELEMENT_FACTORY_KLASS_SRC "Source"
#define GST_ELEMENT_FACTORY_KLASS_MUXER "Muxer"
#define GST_ELEMENT_FACTORY_KLASS_DEMUXER "Demuxer"
#define GST_ELEMENT_FACTORY_KLASS_PARSER "Parser"
#define GST_ELEMENT_FACTORY_KLASS_PAYLOADER "Payloader"
#define GST_ELEMENT_FACTORY_KLASS_DEPAYLOADER "Depayloader"
#define GST_ELEMENT_FACTORY_KLASS_FORMATTER "Formatter"
#define GST_ELEMENT_FACTORY_KLASS_MEDIA_VIDEO "Video"
#define GST_ELEMENT_FACTORY_KLASS_MEDIA_AUDIO "Audio"
#define GST_ELEMENT_FACTORY_KLASS_MEDIA_IMAGE "Image"
#define GST_ELEMENT_FACTORY_KLASS_MEDIA_SUBTITLE "Subtitle"
#define GST_ELEMENT_FACTORY_KLASS_MEDIA_METADATA "Metadata"
gboolean gst_element_factory_list_is_type (GstElementFactory *factory,
GstElementFactoryListType type);
GList * gst_element_factory_list_get_elements (GstElementFactoryListType type,
GstRank minrank);
GList * gst_element_factory_list_filter (GList *list, const GstCaps *caps,
GstPadDirection direction,
gboolean subsetonly);
G_END_DECLS
#endif /* __GST_ELEMENT_FACTORY_H__ */