mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-01 14:11:15 +00:00
e1dc60524e
Implement GstDynamicTypeFactory as a new registry feature. GstDynamicTypeFactory provides a way of registering a GType into the registry, such that it will be registered as a dynamic type when the registry is loaded, and then automatically loaded if the type is needed during caps parsing. This allows using non-core types in pad templates, by loading a registry feature to create the GType on the fly. https://bugzilla.gnome.org/show_bug.cgi?id=750079
191 lines
4.8 KiB
C
191 lines
4.8 KiB
C
/* GStreamer
|
|
* Copyright (C) 2006 Josep Torra <josep@fluendo.com>
|
|
* Copyright (C) 2006 Mathieu Garcia <matthieu@fluendo.com>
|
|
* Copyright (C) 2006 Stefan Kost <ensonic@sonicpulse.de>
|
|
*
|
|
* gstregistrybinary.h: Header for registry handling
|
|
*
|
|
* 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., 51 Franklin St, Fifth Floor,
|
|
* Boston, MA 02110-1301, USA.
|
|
*/
|
|
#ifndef __GST_REGISTRYCHUNKS_H__
|
|
#define __GST_REGISTRYCHUNKS_H__
|
|
|
|
#include <gst/gstpad.h>
|
|
#include <gst/gstregistry.h>
|
|
|
|
/*
|
|
* we reference strings directly from the plugins and in this case set CONST to
|
|
* avoid freeing them. If g_free() should be used, the MALLOC flag is set,
|
|
* otherwise g_slice_free1() will be used!
|
|
*/
|
|
enum {
|
|
GST_REGISTRY_CHUNK_FLAG_NONE = 0,
|
|
GST_REGISTRY_CHUNK_FLAG_CONST = 1,
|
|
GST_REGISTRY_CHUNK_FLAG_MALLOC = 2,
|
|
};
|
|
|
|
/*
|
|
* GstRegistryChunk:
|
|
*
|
|
* Header for binary blobs
|
|
*/
|
|
typedef struct _GstRegistryChunk
|
|
{
|
|
gpointer data;
|
|
guint size;
|
|
guint flags;
|
|
gboolean align;
|
|
} GstRegistryChunk;
|
|
|
|
typedef struct _GstRegistryChunkGlobalHeader
|
|
{
|
|
guint32 filter_env_hash;
|
|
} GstRegistryChunkGlobalHeader;
|
|
|
|
/*
|
|
* GstRegistryChunkPluginElement:
|
|
*
|
|
* @n_deps: Says how many dependency structures follows.
|
|
*
|
|
* @nfeatures: says how many binary plugin feature structures we will have
|
|
* right after the structure itself.
|
|
*
|
|
* A structure containing (staticely) every information needed for a plugin
|
|
*/
|
|
|
|
typedef struct _GstRegistryChunkPluginElement
|
|
{
|
|
gulong file_size;
|
|
gulong file_mtime;
|
|
|
|
guint n_deps;
|
|
|
|
guint nfeatures;
|
|
} GstRegistryChunkPluginElement;
|
|
|
|
/* GstRegistryChunkDep:
|
|
*/
|
|
typedef struct _GstRegistryChunkDep
|
|
{
|
|
guint flags;
|
|
guint n_env_vars;
|
|
guint n_paths;
|
|
guint n_names;
|
|
|
|
guint env_hash;
|
|
guint stat_hash;
|
|
} GstRegistryChunkDep;
|
|
|
|
/*
|
|
* GstRegistryChunkPluginFeature:
|
|
* @rank: rank of the feature
|
|
*
|
|
* A structure containing the plugin features
|
|
*/
|
|
typedef struct _GstRegistryChunkPluginFeature
|
|
{
|
|
gulong rank;
|
|
} GstRegistryChunkPluginFeature;
|
|
|
|
/*
|
|
* GstRegistryChunkElementFactory:
|
|
* @npadtemplates: stores the number of GstRegistryChunkPadTemplate structures
|
|
* following the structure
|
|
* @ninterfaces: stores the number of interface names following the structure
|
|
* @nuriprotocols: stores the number of protocol strings following the structure
|
|
*
|
|
* A structure containing the element factory fields
|
|
*/
|
|
typedef struct _GstRegistryChunkElementFactory
|
|
{
|
|
GstRegistryChunkPluginFeature plugin_feature;
|
|
|
|
guint npadtemplates;
|
|
guint ninterfaces;
|
|
guint nuriprotocols;
|
|
} GstRegistryChunkElementFactory;
|
|
|
|
/*
|
|
* GstRegistryChunkTypeFindFactory:
|
|
* @nextensions: stores the number of typefind extensions
|
|
*
|
|
* A structure containing the type find factory fields
|
|
*/
|
|
typedef struct _GstRegistryChunkTypeFindFactory
|
|
{
|
|
GstRegistryChunkPluginFeature plugin_feature;
|
|
|
|
guint nextensions;
|
|
} GstRegistryChunkTypeFindFactory;
|
|
|
|
/*
|
|
* GstRegistryChunkDeviceProviderFactory:
|
|
*
|
|
* A structure containing the device provider factory fields
|
|
*/
|
|
typedef struct _GstRegistryChunkDeviceProviderFactory
|
|
{
|
|
GstRegistryChunkPluginFeature plugin_feature;
|
|
|
|
} GstRegistryChunkDeviceProviderFactory;
|
|
|
|
/*
|
|
* GstRegistryChunkDynamicTypeFactory:
|
|
*
|
|
* A structure containing the dynamic type factory flags field
|
|
*/
|
|
typedef struct _GstRegistryChunkDynamicTypeFactory
|
|
{
|
|
GstRegistryChunkPluginFeature plugin_feature;
|
|
|
|
guint type_flags;
|
|
} GstRegistryChunkDynamicTypeFactory;
|
|
|
|
/*
|
|
* GstRegistryChunkPadTemplate:
|
|
*
|
|
* A structure containing the static pad templates of a plugin feature
|
|
*/
|
|
typedef struct _GstRegistryChunkPadTemplate
|
|
{
|
|
guint direction; /* Either 0:"sink" or 1:"src" */
|
|
GstPadPresence presence;
|
|
} GstRegistryChunkPadTemplate;
|
|
|
|
G_BEGIN_DECLS
|
|
|
|
gboolean
|
|
_priv_gst_registry_chunks_save_plugin (GList ** list, GstRegistry * registry,
|
|
GstPlugin * plugin);
|
|
|
|
gboolean
|
|
_priv_gst_registry_chunks_load_plugin (GstRegistry * registry, gchar ** in,
|
|
gchar *end, GstPlugin **out_plugin);
|
|
|
|
void
|
|
_priv_gst_registry_chunks_save_global_header (GList ** list,
|
|
GstRegistry * registry, guint32 filter_env_hash);
|
|
|
|
gboolean
|
|
_priv_gst_registry_chunks_load_global_header (GstRegistry * registry,
|
|
gchar ** in, gchar *end, guint32 * filter_env_hash);
|
|
|
|
void
|
|
_priv_gst_registry_chunk_free (GstRegistryChunk *chunk);
|
|
|
|
G_END_DECLS
|
|
|
|
#endif /* __GST_REGISTRYCHUNKS_H__ */
|