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681e4d01c8
Original commit message from CVS: * gst/gstregistrybinary.c: (gst_registry_binary_write_chunk), (gst_registry_binary_initialize_magic), (gst_registry_binary_write_cache), (gst_registry_binary_check_magic): * gst/gstregistrybinary.h: Don't write and check a CRC for the binary registry file. It's guaranteed that the registry is completely written (it's first written to a temporary file and then moved) and if the registry was corrupted by some hardware failure we would have bigger problems. Bump binary registry version to 0.10.21.1 for this as it's an incompatible change and to ensure that the registry gets rebuild after the update. This saves some milliseconds for reading/writing the registry. Fixes bug #560399.
175 lines
4.3 KiB
C
175 lines
4.3 KiB
C
/* GStreamer
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* Copyright (C) 2006 Josep Torra <josep@fluendo.com>
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* Copyright (C) 2006 Mathieu Garcia <matthieu@fluendo.com>
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* Copyright (C) 2006 Stefan Kost <ensonic@sonicpulse.de>
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*
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* gstregistrybinary.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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*/
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#ifndef __GST_REGISTRYBINARY_H__
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#define __GST_REGISTRYBINARY_H__
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#include <gst/gstpad.h>
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#include <gst/gstregistry.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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/*
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* GST_MAGIC_BINARY_REGISTRY_STR:
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*
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* A tag, written at the beginning of the file
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*/
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#define GST_MAGIC_BINARY_REGISTRY_STR "\xc0\xde\xf0\x0d"
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/*
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* GST_MAGIC_BINARY_REGISTRY_LEN:
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*
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* length of the header tag.
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*/
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#define GST_MAGIC_BINARY_REGISTRY_LEN (4)
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/*
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* GST_MAGIC_BINARY_VERSION_STR:
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*
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* The current version of the binary registry format.
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* This _must_ be updated whenever the registry format changes,
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* we currently use the core version where this change happened.
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*/
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#define GST_MAGIC_BINARY_VERSION_STR ("0.10.21.1")
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/*
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* GST_MAGIC_BINARY_VERSION_LEN:
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*
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* length of the version string.
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*/
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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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gchar magic[GST_MAGIC_BINARY_REGISTRY_LEN];
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gchar version[GST_MAGIC_BINARY_VERSION_LEN];
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} GstBinaryRegistryMagic;
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/*
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* we reference strings directly from the plugins and in this case set CONST to
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* avoid freeing them
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*/
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enum {
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GST_BINARY_REGISTRY_FLAG_NONE = 0,
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GST_BINARY_REGISTRY_FLAG_CONST = 1
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};
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/*
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* GstBinaryChunk:
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*
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* Header for binary blobs
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*/
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typedef struct _GstBinaryChunk
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{
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gpointer data;
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guint size;
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guint flags;
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gboolean align;
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} GstBinaryChunk;
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/*
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* GstBinaryPluginElement:
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*
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* @nfeatures: says how many binary plugin feature structures we will have
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* right after the structure itself.
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*
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* A structure containing (staticely) every information needed for a plugin
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*/
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typedef struct _GstBinaryPluginElement
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{
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gulong file_size;
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gulong file_mtime;
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guint nfeatures;
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} GstBinaryPluginElement;
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/*
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* GstBinaryPluginFeature:
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* @rank: rank of the feature
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*
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* A structure containing the plugin features
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*/
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typedef struct _GstBinaryPluginFeature
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{
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gulong rank;
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} GstBinaryPluginFeature;
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/*
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* GstBinaryElementFactory:
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* @npadtemplates: stores the number of GstBinaryPadTemplate structures
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* following the structure
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* @ninterfaces: stores the number of interface names following the structure
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* @nuriprotocols: stores the number of protocol strings following the structure
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*
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* A structure containing the element factory fields
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*/
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typedef struct _GstBinaryElementFactory
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{
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GstBinaryPluginFeature plugin_feature;
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guint npadtemplates;
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guint ninterfaces;
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guint nuriprotocols;
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} GstBinaryElementFactory;
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/*
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* GstBinaryTypeFindFactory:
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* @nextensions: stores the number of typefind extensions
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*
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* A structure containing the element factory fields
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*/
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typedef struct _GstBinaryTypeFindFactory
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{
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GstBinaryPluginFeature plugin_feature;
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guint nextensions;
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} GstBinaryTypeFindFactory;
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/*
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* GstBinaryPadTemplate:
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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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typedef struct _GstBinaryPadTemplate
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{
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guint direction; /* Either 0:"sink" or 1:"src" */
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GstPadPresence presence;
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} GstBinaryPadTemplate;
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/* Function prototypes */
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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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