195 lines
6.4 KiB
C
195 lines
6.4 KiB
C
/* GStreamer
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* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
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* 2000 Wim Taymans <wim.taymans@chello.be>
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*
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* gstregistry.h: Header for registry handling
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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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/* SUGGESTIONS AND TODO :
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** ====================
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** - Use a compressed registry, but would induce performance loss
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** - Encrypt the registry, for security purpose, but would also reduce performances
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** - Also have a non-mmap based cache reading (work with file descriptors)
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*/
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#ifndef __GST_REGISTRYBINARY_H__
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#define __GST_REGISTRYBINARY_H__
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <stdio.h>
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#include <errno.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <dirent.h>
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#include <fcntl.h>
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#include <sys/mman.h>
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#include <gst/gst_private.h>
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#include <gst/gstelement.h>
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#include <gst/gsttypefind.h>
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#include <gst/gsttypefindfactory.h>
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#include <gst/gsturi.h>
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#include <gst/gstinfo.h>
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#include <gst/gstenumtypes.h>
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#include <gst/gstregistry.h>
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#include <gst/gstpadtemplate.h>
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#include "glib-compat-private.h"
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#include <glib/gstdio.h>
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/* A magic, written at the beginning of the file */
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#define GST_MAGIC_BINARY_REGISTRY_STR "\xc0\xde\xf0\x0d"
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#define GST_MAGIC_BINARY_REGISTRY_LEN (4)
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#define GST_MAGIC_BINARY_VERSION_LEN (64)
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typedef struct _GstBinaryRegistryMagic
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{
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char magic[GST_MAGIC_BINARY_REGISTRY_LEN];
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char version[GST_MAGIC_BINARY_VERSION_LEN];
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} GstBinaryRegistryMagic;
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/* Used to store pointers to write */
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typedef struct _GstBinaryChunck
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{
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void *data;
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unsigned int size;
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} GstBinaryChunck;
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/* A structure containing (staticely) every information needed for a plugin
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**
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** Notes :
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** "nfeatures" is used to say how many GstBinaryPluginFeature structures we will have
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** right after the structure itself.
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*/
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/* Various lenght defines for our GstBinaryPluginElement structure
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** Note : We could eventually use smaller size
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*/
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#define GST_BINARY_REGISTRY_NAME_LEN (256)
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#define GST_BINARY_REGISTRY_DESCRIPTION_LEN (1024)
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#define GST_BINARY_REGISTRY_VERSION_LEN (64)
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#define GST_BINARY_REGISTRY_LICENSE_LEN (256)
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#define GST_BINARY_REGISTRY_SOURCE_LEN (256)
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#define GST_BINARY_REGISTRY_PACKAGE_LEN (1024)
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#define GST_BINARY_REGISTRY_ORIGIN_LEN (1024)
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typedef struct _GstBinaryPluginElement
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{
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char name[GST_BINARY_REGISTRY_NAME_LEN];
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char description[GST_BINARY_REGISTRY_DESCRIPTION_LEN];
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char filename[_POSIX_PATH_MAX];
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char version[GST_BINARY_REGISTRY_VERSION_LEN];
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char license[GST_BINARY_REGISTRY_LICENSE_LEN];
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char source[GST_BINARY_REGISTRY_SOURCE_LEN];
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char package[GST_BINARY_REGISTRY_PACKAGE_LEN];
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char origin[GST_BINARY_REGISTRY_ORIGIN_LEN];
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unsigned long size;
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unsigned long m32p;
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unsigned int nfeatures;
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} GstBinaryPluginElement;
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/* A structure containing the plugin features
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**
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** Note :
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** "npadtemplates" is used to store the number of GstBinaryPadTemplate structures following the structure itself.
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** "ninterfaces" is used to store the number of GstBinaryInterface structures following the structure itself.
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** "nuritypes" is used to store the number of GstBinaryUriType structures following the structure itself.
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*/
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#define GST_BINARY_REGISTRY_TYPENAME_TYPENAME_LEN (256)
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#define GST_BINARY_REGISTRY_TYPENAME_NAME_LEN (256)
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#define GST_BINARY_REGISTRY_TYPENAME_LONGNAME_LEN (1024)
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#define GST_BINARY_REGISTRY_TYPENAME_CLASS_LEN (512)
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#define GST_BINARY_REGISTRY_TYPENAME_DESCRIPTION_LEN (1024)
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#define GST_BINARY_REGISTRY_TYPENAME_AUTHOR_LEN (256)
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typedef struct _GstBinaryPluginFeature
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{
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char typename[GST_BINARY_REGISTRY_TYPENAME_TYPENAME_LEN];
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char name[GST_BINARY_REGISTRY_TYPENAME_NAME_LEN];
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unsigned long rank;
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char longname[GST_BINARY_REGISTRY_TYPENAME_LONGNAME_LEN];
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char class[GST_BINARY_REGISTRY_TYPENAME_CLASS_LEN];
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char description[GST_BINARY_REGISTRY_TYPENAME_DESCRIPTION_LEN];
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char author[GST_BINARY_REGISTRY_TYPENAME_AUTHOR_LEN];
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unsigned int npadtemplates;
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unsigned int ninterfaces;
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unsigned int nuritypes;
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} GstBinaryPluginFeature;
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/*
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** A structure containing the static pad templates of a plugin feature
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*/
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#define GST_BINARY_REGISTRY_PADTEMPLATE_NAME_LEN (256)
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#define GST_BINARY_REGISTRY_PADTEMPLATE_CAP_LEN (1024)
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typedef struct _GstBinaryPadTemplate
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{
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char name[GST_BINARY_REGISTRY_PADTEMPLATE_NAME_LEN];
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char cap[GST_BINARY_REGISTRY_PADTEMPLATE_CAP_LEN];
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int direction; /* Either 0:"sink" or 1:"src" */
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GstPadPresence presence;
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} GstBinaryPadTemplate;
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/*
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** A very simple structure defining the plugin feature interface string
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*/
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#define GST_BINARY_REGISTRY_INTERFACE_INTERFACE_LEN (512)
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typedef struct _GstBinaryInterface
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{
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char interface[GST_BINARY_REGISTRY_INTERFACE_INTERFACE_LEN];
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unsigned long size;
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} GstBinaryInterface;
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/* Uri Type */
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typedef struct _GstBinaryUriType
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{
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GstURIType type;
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unsigned long nuriprotocols;
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} GstBinaryUriType;
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/*
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** Function prototypes
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*/
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/* Local prototypes */
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inline static gboolean gst_registry_binary_write(GstRegistry *registry, const void *mem, const ssize_t size);
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inline static gboolean gst_registry_binary_initialize_magic(GstBinaryRegistryMagic *m);
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static gboolean gst_registry_binary_fill_feature(GList **list, GstPluginFeature *, GstBinaryPluginFeature *, const char *);
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static gboolean gst_registry_binary_save_plugin(GList **list, GstRegistry *registry, GstPlugin *plugin);
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static gchar *gst_registry_binary_check_magic(gchar *in);
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static GstPluginFeature *gst_registry_binary_load_feature(GstBinaryPluginFeature *);
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static unsigned long gst_registry_binary_get_binary_plugin(GstRegistry *registry, gchar *in);
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/* Exportable */
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gboolean gst_registry_binary_write_cache(GstRegistry *registry, const char *location);
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gboolean gst_registry_binary_read_cache(GstRegistry *registry, const char *location);
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#endif /* !__GST_REGISTRYBINARY_H__ */
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