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gst/: splitted gsttypefind into gsttypefind, gsttypefindfactory

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Original commit message from CVS:
* gst/Makefile.am:
* gst/elements/gstbufferstore.h:
* gst/elements/gsttypefindelement.c:
* gst/elements/gsttypefindelement.h:
* gst/gst.h:
* gst/gsttypefind.c:
* gst/gsttypefind.h:
* gst/gsttypefindfactory.c: (gst_type_find_factory_get_type),
(gst_type_find_factory_class_init), (gst_type_find_factory_init),
(gst_type_find_factory_dispose),
(gst_type_find_factory_unload_thyself),
(gst_type_find_load_plugin), (gst_type_find_factory_get_list),
(gst_type_find_factory_get_caps),
(gst_type_find_factory_get_extensions),
(gst_type_find_factory_call_function):
* gst/gsttypefindfactory.h:
* gst/registries/gstlibxmlregistry.c:
* gst/registries/gstxmlregistry.c:
splitted gsttypefind into gsttypefind, gsttypefindfactory
This commit is contained in:
Stefan Kost 2005-09-07 12:35:23 +00:00
parent c477a458d7
commit 628f773e65
15 changed files with 383 additions and 287 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

22
ChangeLog
View file

@ -1,3 +1,25 @@
2005-09-07 Stefan Kost <ensonic@users.sf.net>
* gst/Makefile.am:
* gst/elements/gstbufferstore.h:
* gst/elements/gsttypefindelement.c:
* gst/elements/gsttypefindelement.h:
* gst/gst.h:
* gst/gsttypefind.c:
* gst/gsttypefind.h:
* gst/gsttypefindfactory.c: (gst_type_find_factory_get_type),
(gst_type_find_factory_class_init), (gst_type_find_factory_init),
(gst_type_find_factory_dispose),
(gst_type_find_factory_unload_thyself),
(gst_type_find_load_plugin), (gst_type_find_factory_get_list),
(gst_type_find_factory_get_caps),
(gst_type_find_factory_get_extensions),
(gst_type_find_factory_call_function):
* gst/gsttypefindfactory.h:
* gst/registries/gstlibxmlregistry.c:
* gst/registries/gstxmlregistry.c:
splitted gsttypefind into gsttypefind, gsttypefindfactory
2005-09-07 Andy Wingo <wingo@pobox.com> 2005-09-07 Andy Wingo <wingo@pobox.com>
* gst/base/gstbasesink.c (gst_base_sink_activate_pull): Fix a race * gst/base/gstbasesink.c (gst_base_sink_activate_pull): Fix a race

2
gst/Makefile.am
View file

@ -115,6 +115,7 @@ libgstreamer_@GST_MAJORMINOR@_la_SOURCES = \
$(GST_TRACE_SRC) \ $(GST_TRACE_SRC) \
gsttrashstack.c \ gsttrashstack.c \
gsttypefind.c \ gsttypefind.c \
gsttypefindfactory.c \
$(GST_URI_SRC) \ $(GST_URI_SRC) \
gsturitype.c \ gsturitype.c \
gstutils.c \ gstutils.c \
@ -191,6 +192,7 @@ gst_headers = \
gsttrace.h \ gsttrace.h \
gsttrashstack.h \ gsttrashstack.h \
gsttypefind.h \ gsttypefind.h \
gsttypefindfactory.h \
gsturi.h \ gsturi.h \
gsturitype.h \ gsturitype.h \
gstutils.h \ gstutils.h \

2
gst/elements/gstbufferstore.h
View file

@ -1,7 +1,7 @@
/* GStreamer /* GStreamer
* Copyright (C) 2003 Benjamin Otte <in7y118@public.uni-hamburg.de> * Copyright (C) 2003 Benjamin Otte <in7y118@public.uni-hamburg.de>
* *
* gsttypefind.h: keep an easily accessible list of all buffers * gstbufferstore.h: keep an easily accessible list of all buffers
* *
* This library is free software; you can redistribute it and/or * This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public * modify it under the terms of the GNU Library General Public

2
gst/elements/gsttypefindelement.c
View file

@ -1,7 +1,7 @@
/* GStreamer /* GStreamer
* Copyright (C) 2003 Benjamin Otte <in7y118@public.uni-hamburg.de> * Copyright (C) 2003 Benjamin Otte <in7y118@public.uni-hamburg.de>
* *
* gsttypefind.c: element that detects type of stream * gsttypefindelement.c: element that detects type of stream
* *
* This library is free software; you can redistribute it and/or * This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public * modify it under the terms of the GNU Library General Public

2
gst/elements/gsttypefindelement.h
View file

@ -1,7 +1,7 @@
/* GStreamer /* GStreamer
* Copyright (C) 2003 Benjamin Otte <in7y118@public.uni-hamburg.de> * Copyright (C) 2003 Benjamin Otte <in7y118@public.uni-hamburg.de>
* *
* gsttypefind.h: element that detects type of stream * gsttypefindelement.h: element that detects type of stream
* *
* This library is free software; you can redistribute it and/or * This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public * modify it under the terms of the GNU Library General Public

1
gst/gst.h
View file

@ -58,6 +58,7 @@
#include <gst/gsttask.h> #include <gst/gsttask.h>
#include <gst/gsttrace.h> #include <gst/gsttrace.h>
#include <gst/gsttypefind.h> #include <gst/gsttypefind.h>
#include <gst/gsttypefindfactory.h>
#include <gst/gsturi.h> #include <gst/gsturi.h>
#include <gst/gsturitype.h> #include <gst/gsturitype.h>
#include <gst/gstutils.h> #include <gst/gstutils.h>

238
gst/gsttypefind.c
View file

@ -1,7 +1,7 @@
/* GStreamer /* GStreamer
* Copyright (C) 2003 Benjamin Otte <in7y118@public.uni-hamburg.de> * Copyright (C) 2003 Benjamin Otte <in7y118@public.uni-hamburg.de>
* *
* gsttypefind.h: typefinding subsystem * gsttypefind.c: typefinding subsystem
* *
* This library is free software; you can redistribute it and/or * This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public * modify it under the terms of the GNU Library General Public
@ -23,248 +23,16 @@
* @short_description: Stream type detection * @short_description: Stream type detection
* *
*/ */
/**
* SECTION:gsttypefindfactory
* @short_description: Information about registered typefind functions
*
* These functions allow querying informations about registered typefind
* functions. How to create and register these functions is described in
* the section <link linkend="gstreamer-Writing-typefind-functions">
* "Writing typefind functions"</link>.
*
* <example>
* <title>how to write a simple typefinder</title>
* <programlisting>
* typedef struct {
* guint8 *data;
* guint size;
* guint probability;
* GstCaps *data;
* } MyTypeFind;
* static void
* my_peek (gpointer data, gint64 offset, guint size)
* {
* MyTypeFind *find = (MyTypeFind *) data;
* if (offset &gt;= 0 &amp;&amp; offset + size &lt;= find->size) {
* return find->data + offset;
* }
* return NULL;
* }
* static void
* my_suggest (gpointer data, guint probability, GstCaps *caps)
* {
* MyTypeFind *find = (MyTypeFind *) data;
* if (probability &gt; find->probability) {
* find->probability = probability;
* gst_caps_replace (&amp;find->caps, caps);
* }
* }
* static GstCaps *
* find_type (guint8 *data, guint size)
* {
* GList *walk, *type_list;
* MyTypeFind find = {data, size, 0, NULL};
* GstTypeFind gst_find = {my_peek, my_suggest, &amp;find, };
*
* walk = type_list = gst_type_find_factory_get_list ();
* while (walk) {
* GstTypeFindFactory *factory = GST_TYPE_FIND_FACTORY (walk->data);
* walk = g_list_next (walk)
* gst_type_find_factory_call_function (factory, &amp;gst_find);
* }
* g_list_free (type_list);
* return find.caps;
* };
* </programlisting>
* </example>
*
* The above example shows how to write a very simple typefinder that identifies
* the given data. You can get quite a bit more complicated than that though.
*/
#include "gst_private.h" #include "gst_private.h"
#include "gstinfo.h" #include "gstinfo.h"
#include "gsttypefind.h" #include "gsttypefind.h"
#include "gsttypefindfactory.h"
#include "gstregistrypool.h" #include "gstregistrypool.h"
GST_DEBUG_CATEGORY_STATIC (gst_type_find_debug); GST_DEBUG_CATEGORY_EXTERN (gst_type_find_debug);
#define GST_CAT_DEFAULT gst_type_find_debug #define GST_CAT_DEFAULT gst_type_find_debug
static void gst_type_find_factory_class_init (gpointer g_class,
gpointer class_data);
static void gst_type_find_factory_init (GTypeInstance * instance,
gpointer g_class);
static void gst_type_find_factory_dispose (GObject * object);
static void gst_type_find_factory_unload_thyself (GstPluginFeature * feature);
static void gst_type_find_load_plugin (GstTypeFind * find, gpointer data);
static GstPluginFeatureClass *parent_class = NULL;
GType
gst_type_find_factory_get_type (void)
{
static GType typefind_type = 0;
if (!typefind_type) {
static const GTypeInfo typefind_info = {
sizeof (GstTypeFindFactoryClass),
NULL,
NULL,
gst_type_find_factory_class_init,
NULL,
NULL,
sizeof (GstTypeFindFactory),
0,
gst_type_find_factory_init,
NULL
};
typefind_type = g_type_register_static (GST_TYPE_PLUGIN_FEATURE,
"GstTypeFindFactory", &typefind_info, 0);
GST_DEBUG_CATEGORY_INIT (gst_type_find_debug, "GST_TYPEFIND",
GST_DEBUG_FG_GREEN, "typefinding subsystem");
}
return typefind_type;
}
static void
gst_type_find_factory_class_init (gpointer g_class, gpointer class_data)
{
GstPluginFeatureClass *gstpluginfeature_class =
GST_PLUGIN_FEATURE_CLASS (g_class);
GObjectClass *object_class = G_OBJECT_CLASS (g_class);
parent_class = g_type_class_peek_parent (g_class);
object_class->dispose = gst_type_find_factory_dispose;
gstpluginfeature_class->unload_thyself =
GST_DEBUG_FUNCPTR (gst_type_find_factory_unload_thyself);
}
static void
gst_type_find_factory_init (GTypeInstance * instance, gpointer g_class)
{
GstTypeFindFactory *factory = GST_TYPE_FIND_FACTORY (instance);
factory->user_data = factory;
factory->function = gst_type_find_load_plugin;
}
static void
gst_type_find_factory_dispose (GObject * object)
{
GstTypeFindFactory *factory = GST_TYPE_FIND_FACTORY (object);
if (factory->caps) {
gst_caps_unref (factory->caps);
factory->caps = NULL;
}
if (factory->extensions) {
g_strfreev (factory->extensions);
factory->extensions = NULL;
}
}
static void
gst_type_find_factory_unload_thyself (GstPluginFeature * feature)
{
GstTypeFindFactory *factory = GST_TYPE_FIND_FACTORY (feature);
factory->function = gst_type_find_load_plugin;
factory->user_data = factory;
}
static void
gst_type_find_load_plugin (GstTypeFind * find, gpointer data)
{
GstTypeFindFactory *factory = GST_TYPE_FIND_FACTORY (data);
GST_DEBUG_OBJECT (factory, "need to load typefind function %s",
GST_PLUGIN_FEATURE_NAME (factory));
if (gst_plugin_feature_ensure_loaded (GST_PLUGIN_FEATURE (factory))) {
if (factory->function == gst_type_find_load_plugin) {
/* looks like we didn't get a real typefind function */
g_warning ("could not load valid typefind function for feature '%s'\n",
GST_PLUGIN_FEATURE_NAME (factory));
} else {
g_assert (factory->function);
gst_type_find_factory_call_function (factory, find);
}
}
}
/**
* gst_type_find_factory_get_list:
*
* Gets the list of all registered typefind factories. You must free the
* list using g_list_free.
*
* Returns: the list of all registered typefind factories
*/
GList *
gst_type_find_factory_get_list (void)
{
return gst_registry_pool_feature_list (GST_TYPE_TYPE_FIND_FACTORY);
}
/**
* gst_type_find_factory_get_caps:
* @factory: a factory
*
* Gets the caps associated with a typefind factory.
*
* Returns: the #GstCaps associated with this factory
*/
const GstCaps *
gst_type_find_factory_get_caps (const GstTypeFindFactory * factory)
{
g_return_val_if_fail (GST_IS_TYPE_FIND_FACTORY (factory), NULL);
return factory->caps;
}
/**
* gst_type_find_factory_get_extensions:
* @factory: a factory
*
* Gets the extensions associated with a typefind factory. The returned
* array should not be changed. If you need to change stuff in it, you should
* copy it using g_stdupv(). This function may return NULL to indicate
* a 0-length list.
*
* Returns: a NULL-terminated array of extensions associated with this factory
*/
gchar **
gst_type_find_factory_get_extensions (const GstTypeFindFactory * factory)
{
g_return_val_if_fail (GST_IS_TYPE_FIND_FACTORY (factory), NULL);
return factory->extensions;
}
/**
* gst_type_find_factory_call_function:
* @factory: a factory
* @find: a properly setup #GstTypeFind entry. The get_data and suggest_type
* members must be set.
*
* Calls the typefinding function associated with this factory.
*/
void
gst_type_find_factory_call_function (const GstTypeFindFactory * factory,
GstTypeFind * find)
{
g_return_if_fail (GST_IS_TYPE_FIND_FACTORY (factory));
g_return_if_fail (find != NULL);
g_return_if_fail (find->peek != NULL);
g_return_if_fail (find->suggest != NULL);
/* should never happen */
g_assert (factory->function != NULL);
factory->function (find, factory->user_data);
}
/** /**
* gst_type_find_register: * gst_type_find_register:
* @plugin: the GstPlugin to register with * @plugin: the GstPlugin to register with

51
gst/gsttypefind.h
View file

@ -29,16 +29,7 @@
G_BEGIN_DECLS G_BEGIN_DECLS
#define GST_TYPE_TYPE_FIND_FACTORY (gst_type_find_factory_get_type())
#define GST_TYPE_FIND_FACTORY(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_TYPE_FIND_FACTORY, GstTypeFindFactory))
#define GST_IS_TYPE_FIND_FACTORY(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_TYPE_FIND_FACTORY))
#define GST_TYPE_FIND_FACTORY_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_TYPE_FIND_FACTORY, GstTypeFindFactoryClass))
#define GST_IS_TYPE_FIND_FACTORY_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_TYPE_FIND_FACTORY))
#define GST_TYPE_FIND_FACTORY_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_TYPE_FIND_FACTORY, GstTypeFindFactoryClass))
typedef struct _GstTypeFind GstTypeFind; typedef struct _GstTypeFind GstTypeFind;
typedef struct _GstTypeFindFactory GstTypeFindFactory;
typedef struct _GstTypeFindFactoryClass GstTypeFindFactoryClass;
typedef void (* GstTypeFindFunction) (GstTypeFind *find, gpointer data); typedef void (* GstTypeFindFunction) (GstTypeFind *find, gpointer data);
@ -50,6 +41,11 @@ typedef enum {
GST_TYPE_FIND_MAXIMUM = 100 GST_TYPE_FIND_MAXIMUM = 100
} GstTypeFindProbability; } GstTypeFindProbability;
/**
* GstTypeFind:
*
* Object that stores typefind callbacks.
*/
struct _GstTypeFind { struct _GstTypeFind {
/* private to the caller of the typefind function */ /* private to the caller of the typefind function */
guint8 * (* peek) (gpointer data, guint8 * (* peek) (gpointer data,
@ -68,31 +64,6 @@ struct _GstTypeFind {
gpointer _gst_reserved[GST_PADDING]; gpointer _gst_reserved[GST_PADDING];
}; };
/**
* GstTypeFindFactory:
*
* Object that stores information about a typefind function.
*/
struct _GstTypeFindFactory {
GstPluginFeature feature;
/* <private> */
GstTypeFindFunction function;
gchar ** extensions;
GstCaps * caps; /* FIXME: not yet saved in registry */
gpointer user_data;
gpointer _gst_reserved[GST_PADDING];
};
struct _GstTypeFindFactoryClass {
GstPluginFeatureClass parent;
/* <private> */
gpointer _gst_reserved[GST_PADDING];
};
/* typefind function interface */ /* typefind function interface */
guint8 * gst_type_find_peek (GstTypeFind * find, guint8 * gst_type_find_peek (GstTypeFind * find,
gint64 offset, gint64 offset,
@ -111,18 +82,6 @@ gboolean gst_type_find_register (GstPlugin * plugin,
const GstCaps * possible_caps, const GstCaps * possible_caps,
gpointer data); gpointer data);
/* typefinding interface */
GType gst_type_find_factory_get_type (void);
GList * gst_type_find_factory_get_list (void);
gchar ** gst_type_find_factory_get_extensions (const GstTypeFindFactory *factory);
const GstCaps * gst_type_find_factory_get_caps (const GstTypeFindFactory *factory);
void gst_type_find_factory_call_function (const GstTypeFindFactory *factory,
GstTypeFind *find);
G_END_DECLS G_END_DECLS
#endif /* __GST_TYPE_FIND_H__ */ #endif /* __GST_TYPE_FIND_H__ */

262
gst/gsttypefindfactory.c Normal file
View file

@ -0,0 +1,262 @@
/* GStreamer
* Copyright (C) 2003 Benjamin Otte <in7y118@public.uni-hamburg.de>
*
* gsttypefindfactory.c: typefinding subsystem
*
* 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.
*/
/**
* SECTION:gsttypefindfactory
* @short_description: Information about registered typefind functions
*
* These functions allow querying informations about registered typefind
* functions. How to create and register these functions is described in
* the section <link linkend="gstreamer-Writing-typefind-functions">
* "Writing typefind functions"</link>.
*
* <example>
* <title>how to write a simple typefinder</title>
* <programlisting>
* typedef struct {
* guint8 *data;
* guint size;
* guint probability;
* GstCaps *data;
* } MyTypeFind;
* static void
* my_peek (gpointer data, gint64 offset, guint size)
* {
* MyTypeFind *find = (MyTypeFind *) data;
* if (offset &gt;= 0 &amp;&amp; offset + size &lt;= find->size) {
* return find->data + offset;
* }
* return NULL;
* }
* static void
* my_suggest (gpointer data, guint probability, GstCaps *caps)
* {
* MyTypeFind *find = (MyTypeFind *) data;
* if (probability &gt; find->probability) {
* find->probability = probability;
* gst_caps_replace (&amp;find->caps, caps);
* }
* }
* static GstCaps *
* find_type (guint8 *data, guint size)
* {
* GList *walk, *type_list;
* MyTypeFind find = {data, size, 0, NULL};
* GstTypeFind gst_find = {my_peek, my_suggest, &amp;find, };
*
* walk = type_list = gst_type_find_factory_get_list ();
* while (walk) {
* GstTypeFindFactory *factory = GST_TYPE_FIND_FACTORY (walk->data);
* walk = g_list_next (walk)
* gst_type_find_factory_call_function (factory, &amp;gst_find);
* }
* g_list_free (type_list);
* return find.caps;
* };
* </programlisting>
* </example>
*
* The above example shows how to write a very simple typefinder that identifies
* the given data. You can get quite a bit more complicated than that though.
*/
#include "gst_private.h"
#include "gstinfo.h"
#include "gsttypefind.h"
#include "gsttypefindfactory.h"
#include "gstregistrypool.h"
GST_DEBUG_CATEGORY (gst_type_find_debug);
#define GST_CAT_DEFAULT gst_type_find_debug
static void gst_type_find_factory_class_init (gpointer g_class,
gpointer class_data);
static void gst_type_find_factory_init (GTypeInstance * instance,
gpointer g_class);
static void gst_type_find_factory_dispose (GObject * object);
static void gst_type_find_factory_unload_thyself (GstPluginFeature * feature);
static void gst_type_find_load_plugin (GstTypeFind * find, gpointer data);
static GstPluginFeatureClass *parent_class = NULL;
GType
gst_type_find_factory_get_type (void)
{
static GType typefind_type = 0;
if (!typefind_type) {
static const GTypeInfo typefind_info = {
sizeof (GstTypeFindFactoryClass),
NULL,
NULL,
gst_type_find_factory_class_init,
NULL,
NULL,
sizeof (GstTypeFindFactory),
0,
gst_type_find_factory_init,
NULL
};
typefind_type = g_type_register_static (GST_TYPE_PLUGIN_FEATURE,
"GstTypeFindFactory", &typefind_info, 0);
GST_DEBUG_CATEGORY_INIT (gst_type_find_debug, "GST_TYPEFIND",
GST_DEBUG_FG_GREEN, "typefinding subsystem");
}
return typefind_type;
}
static void
gst_type_find_factory_class_init (gpointer g_class, gpointer class_data)
{
GstPluginFeatureClass *gstpluginfeature_class =
GST_PLUGIN_FEATURE_CLASS (g_class);
GObjectClass *object_class = G_OBJECT_CLASS (g_class);
parent_class = g_type_class_peek_parent (g_class);
object_class->dispose = gst_type_find_factory_dispose;
gstpluginfeature_class->unload_thyself =
GST_DEBUG_FUNCPTR (gst_type_find_factory_unload_thyself);
}
static void
gst_type_find_factory_init (GTypeInstance * instance, gpointer g_class)
{
GstTypeFindFactory *factory = GST_TYPE_FIND_FACTORY (instance);
factory->user_data = factory;
factory->function = gst_type_find_load_plugin;
}
static void
gst_type_find_factory_dispose (GObject * object)
{
GstTypeFindFactory *factory = GST_TYPE_FIND_FACTORY (object);
if (factory->caps) {
gst_caps_unref (factory->caps);
factory->caps = NULL;
}
if (factory->extensions) {
g_strfreev (factory->extensions);
factory->extensions = NULL;
}
}
static void
gst_type_find_factory_unload_thyself (GstPluginFeature * feature)
{
GstTypeFindFactory *factory = GST_TYPE_FIND_FACTORY (feature);
factory->function = gst_type_find_load_plugin;
factory->user_data = factory;
}
static void
gst_type_find_load_plugin (GstTypeFind * find, gpointer data)
{
GstTypeFindFactory *factory = GST_TYPE_FIND_FACTORY (data);
GST_DEBUG_OBJECT (factory, "need to load typefind function %s",
GST_PLUGIN_FEATURE_NAME (factory));
if (gst_plugin_feature_ensure_loaded (GST_PLUGIN_FEATURE (factory))) {
if (factory->function == gst_type_find_load_plugin) {
/* looks like we didn't get a real typefind function */
g_warning ("could not load valid typefind function for feature '%s'\n",
GST_PLUGIN_FEATURE_NAME (factory));
} else {
g_assert (factory->function);
gst_type_find_factory_call_function (factory, find);
}
}
}
/**
* gst_type_find_factory_get_list:
*
* Gets the list of all registered typefind factories. You must free the
* list using g_list_free.
*
* Returns: the list of all registered typefind factories
*/
GList *
gst_type_find_factory_get_list (void)
{
return gst_registry_pool_feature_list (GST_TYPE_TYPE_FIND_FACTORY);
}
/**
* gst_type_find_factory_get_caps:
* @factory: a factory
*
* Gets the caps associated with a typefind factory.
*
* Returns: the #GstCaps associated with this factory
*/
const GstCaps *
gst_type_find_factory_get_caps (const GstTypeFindFactory * factory)
{
g_return_val_if_fail (GST_IS_TYPE_FIND_FACTORY (factory), NULL);
return factory->caps;
}
/**
* gst_type_find_factory_get_extensions:
* @factory: a factory
*
* Gets the extensions associated with a typefind factory. The returned
* array should not be changed. If you need to change stuff in it, you should
* copy it using g_stdupv(). This function may return NULL to indicate
* a 0-length list.
*
* Returns: a NULL-terminated array of extensions associated with this factory
*/
gchar **
gst_type_find_factory_get_extensions (const GstTypeFindFactory * factory)
{
g_return_val_if_fail (GST_IS_TYPE_FIND_FACTORY (factory), NULL);
return factory->extensions;
}
/**
* gst_type_find_factory_call_function:
* @factory: a factory
* @find: a properly setup #GstTypeFind entry. The get_data and suggest_type
* members must be set.
*
* Calls the typefinding function associated with this factory.
*/
void
gst_type_find_factory_call_function (const GstTypeFindFactory * factory,
GstTypeFind * find)
{
g_return_if_fail (GST_IS_TYPE_FIND_FACTORY (factory));
g_return_if_fail (find != NULL);
g_return_if_fail (find->peek != NULL);
g_return_if_fail (find->suggest != NULL);
/* should never happen */
g_assert (factory->function != NULL);
factory->function (find, factory->user_data);
}

80
gst/gsttypefindfactory.h Normal file
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@ -0,0 +1,80 @@
/* GStreamer
* Copyright (C) 2003 Benjamin Otte <in7y118@public.uni-hamburg.de>
*
* gsttypefindfactory.h: typefinding subsystem
*
* 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_TYPE_FIND_FACTORY_H__
#define __GST_TYPE_FIND_FACTORY_H__
#include <gst/gstcaps.h>
#include <gst/gstplugin.h>
#include <gst/gstpluginfeature.h>
#include <gst/gsttypefind.h>
G_BEGIN_DECLS
#define GST_TYPE_TYPE_FIND_FACTORY (gst_type_find_factory_get_type())
#define GST_TYPE_FIND_FACTORY(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_TYPE_FIND_FACTORY, GstTypeFindFactory))
#define GST_IS_TYPE_FIND_FACTORY(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_TYPE_FIND_FACTORY))
#define GST_TYPE_FIND_FACTORY_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_TYPE_FIND_FACTORY, GstTypeFindFactoryClass))
#define GST_IS_TYPE_FIND_FACTORY_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_TYPE_FIND_FACTORY))
#define GST_TYPE_FIND_FACTORY_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_TYPE_FIND_FACTORY, GstTypeFindFactoryClass))
typedef struct _GstTypeFindFactory GstTypeFindFactory;
typedef struct _GstTypeFindFactoryClass GstTypeFindFactoryClass;
/**
* GstTypeFindFactory:
*
* Object that stores information about a typefind function.
*/
struct _GstTypeFindFactory {
GstPluginFeature feature;
/* <private> */
GstTypeFindFunction function;
gchar ** extensions;
GstCaps * caps; /* FIXME: not yet saved in registry */
gpointer user_data;
gpointer _gst_reserved[GST_PADDING];
};
struct _GstTypeFindFactoryClass {
GstPluginFeatureClass parent;
/* <private> */
gpointer _gst_reserved[GST_PADDING];
};
/* typefinding interface */
GType gst_type_find_factory_get_type (void);
GList * gst_type_find_factory_get_list (void);
gchar ** gst_type_find_factory_get_extensions (const GstTypeFindFactory *factory);
const GstCaps * gst_type_find_factory_get_caps (const GstTypeFindFactory *factory);
void gst_type_find_factory_call_function (const GstTypeFindFactory *factory,
GstTypeFind *find);
G_END_DECLS
#endif /* __GST_TYPE_FIND_FACTORY_H__ */

1
gst/registries/gstlibxmlregistry.c
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@ -54,6 +54,7 @@
#include <gst/gst_private.h> #include <gst/gst_private.h>
#include <gst/gstelement.h> #include <gst/gstelement.h>
#include <gst/gsttypefind.h> #include <gst/gsttypefind.h>
#include <gst/gsttypefindfactory.h>
#include <gst/gsturi.h> #include <gst/gsturi.h>
#include <gst/gstinfo.h> #include <gst/gstinfo.h>
#include <gst/gstenumtypes.h> #include <gst/gstenumtypes.h>

1
gst/registries/gstxmlregistry.c
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@ -54,6 +54,7 @@
#include <gst/gst_private.h> #include <gst/gst_private.h>
#include <gst/gstelement.h> #include <gst/gstelement.h>
#include <gst/gsttypefind.h> #include <gst/gsttypefind.h>
#include <gst/gsttypefindfactory.h>
#include <gst/gsturi.h> #include <gst/gsturi.h>
#include <gst/gstinfo.h> #include <gst/gstinfo.h>

2
plugins/elements/gstbufferstore.h
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@ -1,7 +1,7 @@
/* GStreamer /* GStreamer
* Copyright (C) 2003 Benjamin Otte <in7y118@public.uni-hamburg.de> * Copyright (C) 2003 Benjamin Otte <in7y118@public.uni-hamburg.de>
* *
* gsttypefind.h: keep an easily accessible list of all buffers * gstbufferstore.h: keep an easily accessible list of all buffers
* *
* This library is free software; you can redistribute it and/or * This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public * modify it under the terms of the GNU Library General Public

2
plugins/elements/gsttypefindelement.c
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@ -1,7 +1,7 @@
/* GStreamer /* GStreamer
* Copyright (C) 2003 Benjamin Otte <in7y118@public.uni-hamburg.de> * Copyright (C) 2003 Benjamin Otte <in7y118@public.uni-hamburg.de>
* *
* gsttypefind.c: element that detects type of stream * gsttypefindelement.c: element that detects type of stream
* *
* This library is free software; you can redistribute it and/or * This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public * modify it under the terms of the GNU Library General Public

2
plugins/elements/gsttypefindelement.h
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@ -1,7 +1,7 @@
/* GStreamer /* GStreamer
* Copyright (C) 2003 Benjamin Otte <in7y118@public.uni-hamburg.de> * Copyright (C) 2003 Benjamin Otte <in7y118@public.uni-hamburg.de>
* *
* gsttypefind.h: element that detects type of stream * gsttypefindelement.h: element that detects type of stream
* *
* This library is free software; you can redistribute it and/or * This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public * modify it under the terms of the GNU Library General Public