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element: rework GstElementDetails

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Clean up the GstElement structure
Replace GstElementDetails with metadata
This commit is contained in:
Wim Taymans 2010-12-07 15:33:04 +01:00
parent a0ed044de8
commit 920ef127ce
15 changed files with 180 additions and 386 deletions
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2
gst/Makefile.am
View file

@ -198,7 +198,7 @@ noinst_HEADERS = \
glib-compat-private.h \
gst-i18n-lib.h \
gst-i18n-app.h \
gstelementdetails.h \
gstelementmetadata.h \
gstpluginloader.h \
gstquark.h \
gstregistrybinary.h \

1
gst/gst.h
View file

@ -40,6 +40,7 @@
#include <gst/gstdatetime.h>
#include <gst/gstdebugutils.h>
#include <gst/gstelement.h>
#include <gst/gstelementmetadata.h>
#include <gst/gsterror.h>
#include <gst/gstevent.h>
#include <gst/gstghostpad.h>

2
gst/gstbin.c
View file

@ -311,7 +311,7 @@ gst_bin_base_init (gpointer g_class)
{
GstElementClass *gstelement_class = GST_ELEMENT_CLASS (g_class);
gst_element_class_set_details_simple (gstelement_class, "Generic bin",
gst_element_class_set_metadata (gstelement_class, "Generic bin",
"Generic/Bin",
"Simple container object",
"Erik Walthinsen <omega@cse.ogi.edu>,"

11
gst/gstcompat.h
View file

@ -34,6 +34,17 @@
G_BEGIN_DECLS
/* added to ease the transition to 0.11 */
#define gst_element_class_set_details_simple gst_element_class_set_metadata
#define gst_element_factory_get_longname(f) gst_element_factory_get_metadata(f, GST_ELEMENT_METADATA_LONGNAME)
#define gst_element_factory_get_klass(f) gst_element_factory_get_metadata(f, GST_ELEMENT_METADATA_KLASS)
#define gst_element_factory_get_description(f) gst_element_factory_get_metadata(f, GST_ELEMENT_METADATA_DESCRIPTION)
#define gst_element_factory_get_author(f) gst_element_factory_get_metadata(f, GST_ELEMENT_METADATA_AUTHOR)
#define gst_element_factory_get_documentation_uri(f) gst_element_factory_get_metadata(f, GST_ELEMENT_METADATA_DOC_URI)
#define gst_element_factory_get_icon_name(f) gst_element_factory_get_metadata(f, GST_ELEMENT_METADATA_ICON_NAME)
#ifndef GST_DISABLE_DEPRECATED
#endif /* not GST_DISABLE_DEPRECATED */

99
gst/gstelement.c
View file

@ -82,7 +82,7 @@
#include <gobject/gvaluecollector.h>
#include "gstelement.h"
#include "gstelementdetails.h"
#include "gstelementmetadata.h"
#include "gstenumtypes.h"
#include "gstbus.h"
#include "gstmarshal.h"
@ -233,7 +233,7 @@ gst_element_base_class_init (gpointer g_class)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
/* FIXME 0.11: Copy the element details and instead of clearing the
/* FIXME 0.11: Instead of clearing the
* pad template list copy the list and increase the refcount of
* the pad templates by one.
*
@ -242,8 +242,7 @@ gst_element_base_class_init (gpointer g_class)
* of doing things.
* See http://bugzilla.gnome.org/show_bug.cgi?id=491501
*/
memset (&element_class->details, 0, sizeof (GstElementDetails));
element_class->meta_data = NULL;
element_class->metadata = gst_structure_empty_new ("metadata");
element_class->padtemplates = NULL;
/* set the factory, see gst_element_register() */
@ -261,11 +260,8 @@ gst_element_base_class_finalize (gpointer g_class)
g_list_foreach (klass->padtemplates, (GFunc) gst_object_unref, NULL);
g_list_free (klass->padtemplates);
__gst_element_details_clear (&klass->details);
if (klass->meta_data) {
gst_structure_free (klass->meta_data);
klass->meta_data = NULL;
}
gst_structure_free (klass->metadata);
}
static void
@ -1158,60 +1154,29 @@ gst_element_class_add_pad_template (GstElementClass * klass,
klass->numpadtemplates++;
}
static void
gst_element_class_add_meta_data (GstElementClass * klass,
/**
* gst_element_class_add_metadata:
* @klass: class to set metadata for
* @key: the key to set
* @value: the value to set
*
* Set @key with @value as metadata in @klass.
*/
void
gst_element_class_add_metadata (GstElementClass * klass,
const gchar * key, const gchar * value)
{
if (!klass->meta_data) {
/* FIXME: use a quark for "metadata" */
klass->meta_data = gst_structure_empty_new ("metadata");
}
g_return_if_fail (GST_IS_ELEMENT_CLASS (klass));
g_return_if_fail (key != NULL);
g_return_if_fail (value != NULL);
gst_structure_set ((GstStructure *) klass->meta_data,
gst_structure_set ((GstStructure *) klass->metadata,
key, G_TYPE_STRING, value, NULL);
}
/**
* gst_element_class_set_documentation_uri:
* @klass: class to set details for
* @uri: uri of element documentation
*
* Set uri pointing to user documentation. Applications can use this to show
* help for e.g. effects to users.
*
* Since: 0.10.31
*/
void
gst_element_class_set_documentation_uri (GstElementClass * klass,
const gchar * uri)
{
g_return_if_fail (GST_IS_ELEMENT_CLASS (klass));
gst_element_class_add_meta_data (klass, "doc-uri", uri);
}
/**
* gst_element_class_set_icon_name:
* @klass: class to set details for
* @name: name of an icon
*
* Elements that bridge to certain other products can include an icon of that
* used product. Application can show the icon in menus/selectors to help
* identifying specific elements.
*
* Since: 0.10.31
*/
void
gst_element_class_set_icon_name (GstElementClass * klass, const gchar * name)
{
g_return_if_fail (GST_IS_ELEMENT_CLASS (klass));
gst_element_class_add_meta_data (klass, "icon-name", name);
}
/**
* gst_element_class_set_details_simple:
* @klass: class to set details for
* gst_element_class_set_metadata:
* @klass: class to set metadata for
* @longname: The long English name of the element. E.g. "File Sink"
* @classification: String describing the type of element, as an unordered list
* separated with slashes ('/'). See draft-klass.txt of the design docs
@ -1219,29 +1184,23 @@ gst_element_class_set_icon_name (GstElementClass * klass, const gchar * name)
* @description: Sentence describing the purpose of the element.
* E.g: "Write stream to a file"
* @author: Name and contact details of the author(s). Use \n to separate
* multiple author details. E.g: "Joe Bloggs &lt;joe.blogs at foo.com&gt;"
* multiple author metadata. E.g: "Joe Bloggs &lt;joe.blogs at foo.com&gt;"
*
* Sets the detailed information for a #GstElementClass. Simpler version of
* gst_element_class_set_details() that generates less linker overhead.
* Sets the detailed information for a #GstElementClass.
* <note>This function is for use in _base_init functions only.</note>
*
* The detail parameter strings are copied into the #GstElementDetails for
* the element class.
*
* Since: 0.10.14
*/
void
gst_element_class_set_details_simple (GstElementClass * klass,
gst_element_class_set_metadata (GstElementClass * klass,
const gchar * longname, const gchar * classification,
const gchar * description, const gchar * author)
{
const GstElementDetails details =
GST_ELEMENT_DETAILS ((gchar *) longname, (gchar *) classification,
(gchar *) description, (gchar *) author);
g_return_if_fail (GST_IS_ELEMENT_CLASS (klass));
__gst_element_details_copy (&klass->details, &details);
gst_structure_set ((GstStructure *) klass->metadata,
GST_ELEMENT_METADATA_LONGNAME, G_TYPE_STRING, longname,
GST_ELEMENT_METADATA_KLASS, G_TYPE_STRING, classification,
GST_ELEMENT_METADATA_DESCRIPTION, G_TYPE_STRING, description,
GST_ELEMENT_METADATA_AUTHOR, G_TYPE_STRING, author, NULL);
}
/**

37
gst/gstelement.h
View file

@ -131,7 +131,7 @@ typedef enum {
*
* Since: 0.10.13
*/
#define GST_STATE_TARGET(elem) (GST_ELEMENT_CAST(elem)->abidata.ABI.target_state)
#define GST_STATE_TARGET(elem) (GST_ELEMENT_CAST(elem)->target_state)
/**
* GST_STATE_RETURN:
@ -391,7 +391,7 @@ typedef enum
*
* Since: 0.10.24
*/
#define GST_ELEMENT_START_TIME(elem) (GST_ELEMENT_CAST(elem)->abidata.ABI.start_time)
#define GST_ELEMENT_START_TIME(elem) (GST_ELEMENT_CAST(elem)->start_time)
/**
* GST_ELEMENT_ERROR:
@ -513,6 +513,7 @@ G_STMT_START { \
* @state_cond: Used to signal completion of a state change
* @state_cookie: Used to detect concurrent execution of
* gst_element_set_state() and gst_element_get_state()
* @target_state: the target state of an element as set by the application
* @current_state: the current state of an element
* @next_state: the next state of an element, can be #GST_STATE_VOID_PENDING if
* the element is in the correct state.
@ -526,6 +527,7 @@ G_STMT_START { \
* @base_time: the time of the clock right before the element is set to
* PLAYING. Subtracting @base_time from the current clock time in the PLAYING
* state will yield the running_time against the clock.
* @start_time: the running_time of the last PAUSED state
* @numpads: number of pads of the element, includes both source and sink pads.
* @pads: list of pads
* @numsrcpads: number of source pads of the element.
@ -546,6 +548,7 @@ struct _GstElement
/* element state */
GCond *state_cond;
guint32 state_cookie;
GstState target_state;
GstState current_state;
GstState next_state;
GstState pending_state;
@ -556,6 +559,7 @@ struct _GstElement
/* allocated clock */
GstClock *clock;
GstClockTimeDiff base_time; /* NULL/READY: 0 - PAUSED: current time - PLAYING: difference to clock */
GstClockTime start_time;
/* element pads, these lists can only be iterated while holding
* the LOCK or checking the cookie after each LOCK. */
@ -568,22 +572,13 @@ struct _GstElement
guint32 pads_cookie;
/*< private >*/
union {
struct {
/* state set by application */
GstState target_state;
/* running time of the last PAUSED state */
GstClockTime start_time;
} ABI;
/* adding + 0 to mark ABI change to be undone later */
gpointer _gst_reserved[GST_PADDING + 0];
} abidata;
gpointer _gst_reserved[GST_PADDING];
};
/**
* GstElementClass:
* @parent_class: the parent class structure
* @details: #GstElementDetails for elements of this class
* @metadata: metadata for elements of this class
* @elementfactory: the #GstElementFactory that creates these elements
* @padtemplates: a #GList of #GstPadTemplate
* @numpadtemplates: the number of padtemplates
@ -610,9 +605,8 @@ struct _GstElementClass
GstObjectClass parent_class;
/*< public >*/
/* the element details */
/* FIXME-0.11: deprecate this in favour of meta_data */
GstElementDetails details;
/* the element metadata */
gpointer metadata;
/* factory that the element was created from */
GstElementFactory *elementfactory;
@ -659,10 +653,8 @@ struct _GstElementClass
gboolean (*query) (GstElement *element, GstQuery *query);
/*< private >*/
/* FIXME-0.11: move up and replace details */
gpointer meta_data;
gpointer _gst_reserved[GST_PADDING-1];
gpointer _gst_reserved[GST_PADDING];
};
/* element class pad templates */
@ -671,13 +663,14 @@ GstPadTemplate* gst_element_class_get_pad_template (GstElementClass
GList* gst_element_class_get_pad_template_list (GstElementClass *element_class);
/* element class meta data */
void gst_element_class_set_documentation_uri (GstElementClass * klass, const gchar *uri);
void gst_element_class_set_icon_name (GstElementClass * klass, const gchar *name);
void gst_element_class_set_details_simple (GstElementClass *klass,
void gst_element_class_set_metadata (GstElementClass *klass,
const gchar *longname,
const gchar *classification,
const gchar *description,
const gchar *author);
void gst_element_class_add_metadata (GstElementClass * klass,
const gchar * key, const gchar * value);
/* element instance */
GType gst_element_get_type (void);

69
gst/gstelementdetails.h
View file

@ -1,69 +0,0 @@
/* 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_DETAILS_H__
#define __GST_ELEMENT_DETAILS_H__
G_BEGIN_DECLS
static inline void
__gst_element_details_clear (GstElementDetails * dp)
{
g_free (dp->longname);
g_free (dp->klass);
g_free (dp->description);
g_free (dp->author);
memset (dp, 0, sizeof (GstElementDetails));
}
#define VALIDATE_SET(__dest, __src, __entry) \
G_STMT_START { \
if (g_utf8_validate (__src->__entry, -1, NULL)) { \
__dest->__entry = g_strdup (__src->__entry); \
} else { \
g_warning ("Invalid UTF-8 in " G_STRINGIFY (__entry) ": %s", \
__src->__entry); \
__dest->__entry = g_strdup ("[ERROR: invalid UTF-8]"); \
} \
} G_STMT_END
static inline void
__gst_element_details_set (GstElementDetails * dest,
const GstElementDetails * src)
{
VALIDATE_SET (dest, src, longname);
VALIDATE_SET (dest, src, klass);
VALIDATE_SET (dest, src, description);
VALIDATE_SET (dest, src, author);
}
static inline void
__gst_element_details_copy (GstElementDetails * dest,
const GstElementDetails * src)
{
__gst_element_details_clear (dest);
__gst_element_details_set (dest, src);
}
G_END_DECLS
#endif /* __GST_ELEMENT_DETAILS_H__ */

131
gst/gstelementfactory.c
View file

@ -60,7 +60,7 @@
#include "gst_private.h"
#include "gstelement.h"
#include "gstelementdetails.h"
#include "gstelementmetadata.h"
#include "gstinfo.h"
#include "gsturi.h"
#include "gstregistry.h"
@ -150,10 +150,9 @@ gst_element_factory_cleanup (GstElementFactory * factory)
{
GList *item;
__gst_element_details_clear (&factory->details);
if (factory->meta_data) {
gst_structure_free ((GstStructure *) factory->meta_data);
factory->meta_data = NULL;
if (factory->metadata) {
gst_structure_free ((GstStructure *) factory->metadata);
factory->metadata = NULL;
}
if (factory->type) {
factory->type = G_TYPE_INVALID;
@ -247,17 +246,16 @@ gst_element_register (GstPlugin * plugin, const gchar * name, guint rank,
/* provide info needed during class structure setup */
g_type_set_qdata (type, _gst_elementclass_factory, factory);
klass = GST_ELEMENT_CLASS (g_type_class_ref (type));
#if 0
/* FIXME */
if ((klass->details.longname == NULL) ||
(klass->details.klass == NULL) || (klass->details.author == NULL))
goto detailserror;
#endif
factory->type = type;
__gst_element_details_copy (&factory->details, &klass->details);
if (klass->meta_data) {
factory->meta_data = gst_structure_copy ((GstStructure *) klass->meta_data);
} else {
factory->meta_data = NULL;
}
factory->metadata = gst_structure_copy ((GstStructure *) klass->metadata);
for (item = klass->padtemplates; item; item = item->next) {
GstPadTemplate *templ = item->data;
GstStaticPadTemplate *newt;
@ -324,6 +322,7 @@ urierror:
return FALSE;
}
#if 0
detailserror:
{
GST_WARNING_OBJECT (factory,
@ -331,6 +330,7 @@ detailserror:
gst_element_factory_cleanup (factory);
return FALSE;
}
#endif
}
/**
@ -498,113 +498,11 @@ gst_element_factory_get_element_type (GstElementFactory * factory)
return factory->type;
}
/**
* gst_element_factory_get_longname:
* @factory: a #GstElementFactory
*
* Gets the longname for this factory
*
* Returns: the longname
*/
G_CONST_RETURN gchar *
gst_element_factory_get_longname (GstElementFactory * factory)
{
g_return_val_if_fail (GST_IS_ELEMENT_FACTORY (factory), NULL);
return factory->details.longname;
}
/**
* gst_element_factory_get_klass:
* @factory: a #GstElementFactory
*
* Gets the class for this factory.
*
* Returns: the class
*/
G_CONST_RETURN gchar *
gst_element_factory_get_klass (GstElementFactory * factory)
{
g_return_val_if_fail (GST_IS_ELEMENT_FACTORY (factory), NULL);
return factory->details.klass;
}
/**
* gst_element_factory_get_description:
* @factory: a #GstElementFactory
*
* Gets the description for this factory.
*
* Returns: the description
*/
G_CONST_RETURN gchar *
gst_element_factory_get_description (GstElementFactory * factory)
{
g_return_val_if_fail (GST_IS_ELEMENT_FACTORY (factory), NULL);
return factory->details.description;
}
/**
* gst_element_factory_get_author:
* @factory: a #GstElementFactory
*
* Gets the author for this factory.
*
* Returns: the author
*/
G_CONST_RETURN gchar *
gst_element_factory_get_author (GstElementFactory * factory)
{
g_return_val_if_fail (GST_IS_ELEMENT_FACTORY (factory), NULL);
return factory->details.author;
}
static G_CONST_RETURN gchar *
gst_element_factory_get_meta_data (GstElementFactory * factory,
gst_element_factory_get_metadata (GstElementFactory * factory,
const gchar * key)
{
if (!factory->meta_data)
return NULL;
/* FIXME: do we want to support other types? */
return gst_structure_get_string ((GstStructure *) factory->meta_data, key);
}
/**
* gst_element_factory_get_documentation_uri:
* @factory: a #GstElementFactory
*
* Gets documentation uri for this factory if set.
*
* Since: 0.10.31
*
* Returns: the documentation uri
*/
G_CONST_RETURN gchar *
gst_element_factory_get_documentation_uri (GstElementFactory * factory)
{
g_return_val_if_fail (GST_IS_ELEMENT_FACTORY (factory), NULL);
return gst_element_factory_get_meta_data (factory, "doc-uri");
}
/**
* gst_element_factory_get_documentation_uri:
* @factory: a #GstElementFactory
*
* Gets icon name for this factory if set.
*
* Since: 0.10.31
*
* Returns: the icon name
*/
G_CONST_RETURN gchar *
gst_element_factory_get_icon_name (GstElementFactory * factory)
{
g_return_val_if_fail (GST_IS_ELEMENT_FACTORY (factory), NULL);
return gst_element_factory_get_meta_data (factory, "icon-name");
return gst_structure_get_string ((GstStructure *) factory->metadata, key);
}
/**
@ -749,7 +647,8 @@ gst_element_factory_list_is_type (GstElementFactory * factory,
gboolean res = FALSE;
const gchar *klass;
klass = gst_element_factory_get_klass (factory);
klass =
gst_element_factory_get_metadata (factory, GST_ELEMENT_METADATA_KLASS);
/* Filter by element type first, as soon as it matches
* one type, we skip all other tests */

80
gst/gstelementfactory.h
View file

@ -36,68 +36,6 @@ typedef struct _GstElementFactoryClass GstElementFactoryClass;
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.
*
* 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.
*/
#define GST_ELEMENT_DETAILS(longname,klass,description,author) \
{ 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)' */
#define GST_IS_ELEMENT_DETAILS(details) ( \
(details) && ((details)->longname != NULL) && ((details)->klass != NULL) \
&& ((details)->description != NULL) && ((details)->author != NULL))
#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))
@ -117,8 +55,7 @@ struct _GstElementFactory {
GType type; /* unique GType of element or 0 if not loaded */
/* FIXME-0.11: deprecate this in favour of meta_data */
GstElementDetails details;
gpointer metadata;
GList * staticpadtemplates; /* GstStaticPadTemplate list */
guint numpadtemplates;
@ -130,9 +67,7 @@ struct _GstElementFactory {
GList * interfaces; /* interface type names this element implements */
/*< private >*/
/* FIXME-0.11: move up and replace details */
gpointer meta_data;
gpointer _gst_reserved[GST_PADDING - 1];
gpointer _gst_reserved[GST_PADDING];
};
struct _GstElementFactoryClass {
@ -146,16 +81,15 @@ GType gst_element_factory_get_type (void);
GstElementFactory * gst_element_factory_find (const gchar *name);
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);
G_CONST_RETURN gchar * gst_element_factory_get_metadata (GstElementFactory *factoryi, const gchar *key);
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);

77
gst/gstelementmetadata.h Normal file
View file

@ -0,0 +1,77 @@
/* GStreamer
* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
* 2000,2004 Wim Taymans <wim@fluendo.com>
*
* gstelementmetadata.h: Metadata for GstElement classes
*
* 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_METADATA_H__
#define __GST_ELEMENT_METADATA_H__
G_BEGIN_DECLS
/**
* GST_ELEMENT_METADATA_LONGNAME:
*
* The long English name of the element. E.g. "File Sink"
*/
#define GST_ELEMENT_METADATA_LONGNAME "long-name"
/**
* GST_ELEMENT_METADATA_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. E.g: "Sink/File"
*/
#define GST_ELEMENT_METADATA_KLASS "klass"
/**
* GST_ELEMENT_METADATA_DESCRIPTION:
*
* Sentence describing the purpose of the element.
* E.g: "Write stream to a file"
*/
#define GST_ELEMENT_METADATA_DESCRIPTION "description"
/**
* GST_ELEMENT_METADATA_AUTHOR:
*
* Name and contact details of the author(s). Use \n to separate
* multiple author details.
* E.g: "Joe Bloggs &lt;joe.blogs at foo.com&gt;"
*/
#define GST_ELEMENT_METADATA_AUTHOR "author"
/**
* GST_ELEMENT_METADATA_DOC_URI:
*
* Set uri pointing to user documentation. Applications can use this to show
* help for e.g. effects to users.
*/
#define GST_ELEMENT_METADATA_DOC_URI "doc-uri"
/**
* GST_ELEMENT_METADATA_ICON_NAME:
*
* Elements that bridge to certain other products can include an icon of that
* used product. Application can show the icon in menus/selectors to help
* identifying specific elements.
*/
#define GST_ELEMENT_METADATA_ICON_NAME "icon-name"
G_END_DECLS
#endif /* __GST_ELEMENT_METADATA_H__ */

2
gst/gstpipeline.c
View file

@ -153,7 +153,7 @@ gst_pipeline_base_init (gpointer g_class)
{
GstElementClass *gstelement_class = GST_ELEMENT_CLASS (g_class);
gst_element_class_set_details_simple (gstelement_class, "Pipeline object",
gst_element_class_set_metadata (gstelement_class, "Pipeline object",
"Generic/Bin",
"Complete pipeline object",
"Erik Walthinsen <omega@cse.ogi.edu>, Wim Taymans <wim@fluendo.com>");

25
gst/gstregistrychunks.c
View file

@ -284,17 +284,9 @@ gst_registry_chunks_save_feature (GList ** list, GstPluginFeature * feature)
}
}
/* pack element factory strings */
gst_registry_chunks_save_const_string (list, factory->details.author);
gst_registry_chunks_save_const_string (list, factory->details.description);
gst_registry_chunks_save_const_string (list, factory->details.klass);
gst_registry_chunks_save_const_string (list, factory->details.longname);
if (factory->meta_data) {
gst_registry_chunks_save_string (list,
gst_structure_to_string (factory->meta_data));
} else {
gst_registry_chunks_save_const_string (list, "");
}
/* pack element metadata strings */
gst_registry_chunks_save_string (list,
gst_structure_to_string (factory->metadata));
} else if (GST_IS_TYPE_FIND_FACTORY (feature)) {
GstRegistryChunkTypeFindFactory *tff;
GstTypeFindFactory *factory = GST_TYPE_FIND_FACTORY (feature);
@ -585,21 +577,16 @@ gst_registry_chunks_load_feature (GstRegistry * registry, gchar ** in,
/* unpack element factory strings */
unpack_string_nocopy (*in, meta_data_str, end, fail);
if (meta_data_str && *meta_data_str) {
factory->meta_data = gst_structure_from_string (meta_data_str, NULL);
if (!factory->meta_data) {
factory->metadata = gst_structure_from_string (meta_data_str, NULL);
if (!factory->metadata) {
GST_ERROR
("Error when trying to deserialize structure for metadata '%s'",
meta_data_str);
goto fail;
}
}
unpack_string (*in, factory->details.longname, end, fail);
unpack_string (*in, factory->details.klass, end, fail);
unpack_string (*in, factory->details.description, end, fail);
unpack_string (*in, factory->details.author, end, fail);
n = ef->npadtemplates;
GST_DEBUG ("Element factory : '%s' with npadtemplates=%d",
factory->details.longname, n);
GST_DEBUG ("Element factory : npadtemplates=%d", n);
/* load pad templates */
for (i = 0; i < n; i++) {

1
tests/check/gst/struct_x86_64.h
View file

@ -14,7 +14,6 @@ static GstCheckABIStruct list[] = {
{"GstElementClass", sizeof (GstElementClass), 488} ,
{"GstElementFactory", sizeof (GstElementFactory), 280} ,
{"GstElementFactoryClass", sizeof (GstElementFactoryClass), 304} ,
{"GstElementDetails", sizeof (GstElementDetails), 64} ,
{"GstEvent", sizeof (GstEvent), 64} ,
{"GstEventClass", sizeof (GstEventClass), 64} ,
{"GstFormatDefinition", sizeof (GstFormatDefinition), 32} ,

12
tools/gst-inspect.c
View file

@ -199,7 +199,7 @@ get_rank_name (char *s, gint rank)
}
static gboolean
print_factory_details_meta_data (GQuark field_id, const GValue * value,
print_factory_details_metadata (GQuark field_id, const GValue * value,
gpointer user_data)
{
gchar *val = g_strdup_value_contents (value);
@ -218,17 +218,11 @@ print_factory_details_info (GstElementFactory * factory)
char s[20];
n_print ("Factory Details:\n");
n_print (" Long name:\t%s\n", factory->details.longname);
n_print (" Class:\t%s\n", factory->details.klass);
n_print (" Description:\t%s\n", factory->details.description);
n_print (" Author(s):\t%s\n", factory->details.author);
n_print (" Rank:\t\t%s (%d)\n",
get_rank_name (s, GST_PLUGIN_FEATURE (factory)->rank),
GST_PLUGIN_FEATURE (factory)->rank);
if (factory->meta_data != NULL) {
gst_structure_foreach ((GstStructure *) factory->meta_data,
print_factory_details_meta_data, NULL);
}
gst_structure_foreach ((GstStructure *) factory->metadata,
print_factory_details_metadata, NULL);
n_print ("\n");
}

17
tools/gst-xmlinspect.c
View file

@ -434,6 +434,17 @@ print_element_signals (GstElement * element, gint pfx)
}
}
static gboolean
put_factory_metadata (GQuark field_id, const GValue * value, gpointer user_data)
{
const gchar *key = g_quark_to_string (field_id);
const gchar *val = g_value_get_string (value);
PUT_ESCAPED (2, key, val);
return TRUE;
}
static gint
print_element_info (GstElementFactory * factory)
{
@ -457,10 +468,8 @@ print_element_info (GstElementFactory * factory)
gstelement_class = GST_ELEMENT_CLASS (G_OBJECT_GET_CLASS (element));
PUT_START_TAG (1, "details");
PUT_ESCAPED (2, "long-name", factory->details.longname);
PUT_ESCAPED (2, "class", factory->details.klass);
PUT_ESCAPED (2, "description", factory->details.description);
PUT_ESCAPED (2, "authors", factory->details.author);
gst_structure_foreach ((GstStructure *) factory->metadata,
put_factory_metadata, NULL);
PUT_END_TAG (1, "details");
output_hierarchy (G_OBJECT_TYPE (element), 0, &maxlevel);