mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-27 02:30:35 +00:00
282 lines
9 KiB
C
282 lines
9 KiB
C
/* GStreamer
|
|
* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
|
|
* 2000 Wim Taymans <wim.taymans@chello.be>
|
|
*
|
|
* gstindex.h: Header for GstIndex, base class to handle efficient
|
|
* storage or caching of seeking information.
|
|
*
|
|
* 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_INDEX_H__
|
|
#define __GST_INDEX_H__
|
|
|
|
#include <gst/gstobject.h>
|
|
#include <gst/gstformat.h>
|
|
#include <gst/gstpluginfeature.h>
|
|
|
|
G_BEGIN_DECLS
|
|
|
|
#define GST_TYPE_INDEX (gst_index_get_type ())
|
|
#define GST_INDEX(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_INDEX, GstIndex))
|
|
#define GST_IS_INDEX(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_INDEX))
|
|
#define GST_INDEX_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_INDEX, GstIndexClass))
|
|
#define GST_IS_INDEX_CLASS(klass) (GST_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_INDEX))
|
|
#define GST_INDEX_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_INDEX, GstIndexClass))
|
|
|
|
#define GST_TYPE_INDEX_ENTRY (gst_index_entry_get_type())
|
|
|
|
typedef struct _GstIndexEntry GstIndexEntry;
|
|
typedef struct _GstIndexGroup GstIndexGroup;
|
|
typedef struct _GstIndex GstIndex;
|
|
typedef struct _GstIndexClass GstIndexClass;
|
|
|
|
typedef enum {
|
|
GST_INDEX_UNKNOWN,
|
|
GST_INDEX_CERTAIN,
|
|
GST_INDEX_FUZZY
|
|
} GstIndexCertainty;
|
|
|
|
typedef enum {
|
|
GST_INDEX_ENTRY_ID,
|
|
GST_INDEX_ENTRY_ASSOCIATION,
|
|
GST_INDEX_ENTRY_OBJECT,
|
|
GST_INDEX_ENTRY_FORMAT
|
|
} GstIndexEntryType;
|
|
|
|
typedef enum {
|
|
GST_INDEX_LOOKUP_EXACT,
|
|
GST_INDEX_LOOKUP_BEFORE,
|
|
GST_INDEX_LOOKUP_AFTER
|
|
} GstIndexLookupMethod;
|
|
|
|
#define GST_INDEX_NASSOCS(entry) ((entry)->data.assoc.nassocs)
|
|
#define GST_INDEX_ASSOC_FLAGS(entry) ((entry)->data.assoc.flags)
|
|
#define GST_INDEX_ASSOC_FORMAT(entry,i) ((entry)->data.assoc.assocs[(i)].format)
|
|
#define GST_INDEX_ASSOC_VALUE(entry,i) ((entry)->data.assoc.assocs[(i)].value)
|
|
|
|
typedef struct _GstIndexAssociation GstIndexAssociation;
|
|
|
|
struct _GstIndexAssociation {
|
|
GstFormat format;
|
|
gint64 value;
|
|
};
|
|
|
|
typedef enum {
|
|
GST_ASSOCIATION_FLAG_NONE = 0,
|
|
GST_ASSOCIATION_FLAG_KEY_UNIT = (1 << 0),
|
|
GST_ASSOCIATION_FLAG_DELTA_UNIT = (1 << 1),
|
|
|
|
/* new flags should start here */
|
|
GST_ASSOCIATION_FLAG_LAST = (1 << 8)
|
|
} GstAssocFlags;
|
|
|
|
#define GST_INDEX_FORMAT_FORMAT(entry) ((entry)->data.format.format)
|
|
#define GST_INDEX_FORMAT_KEY(entry) ((entry)->data.format.key)
|
|
|
|
#define GST_INDEX_ID_INVALID (-1)
|
|
|
|
#define GST_INDEX_ID_DESCRIPTION(entry) ((entry)->data.id.description)
|
|
|
|
struct _GstIndexEntry {
|
|
GstIndexEntryType type;
|
|
gint id;
|
|
|
|
union {
|
|
struct {
|
|
gchar *description;
|
|
} id;
|
|
struct {
|
|
gint nassocs;
|
|
GstIndexAssociation
|
|
*assocs;
|
|
GstAssocFlags flags;
|
|
} assoc;
|
|
struct {
|
|
gchar *key;
|
|
GType type;
|
|
gpointer object;
|
|
} object;
|
|
struct {
|
|
GstFormat format;
|
|
gchar *key;
|
|
} format;
|
|
} data;
|
|
};
|
|
|
|
struct _GstIndexGroup {
|
|
/* unique ID of group in index */
|
|
gint groupnum;
|
|
|
|
/* list of entries */
|
|
GList *entries;
|
|
|
|
/* the certainty level of the group */
|
|
GstIndexCertainty certainty;
|
|
|
|
/* peer group that contains more certain entries */
|
|
gint peergroup;
|
|
};
|
|
|
|
typedef gboolean (*GstIndexFilter) (GstIndex *index,
|
|
GstIndexEntry *entry);
|
|
|
|
typedef enum {
|
|
GST_INDEX_RESOLVER_CUSTOM,
|
|
GST_INDEX_RESOLVER_GTYPE,
|
|
GST_INDEX_RESOLVER_PATH
|
|
} GstIndexResolverMethod;
|
|
|
|
typedef gboolean (*GstIndexResolver) (GstIndex *index,
|
|
GstObject *writer,
|
|
gchar **writer_string,
|
|
gpointer user_data);
|
|
typedef enum {
|
|
GST_INDEX_WRITABLE = GST_OBJECT_FLAG_LAST,
|
|
GST_INDEX_READABLE,
|
|
|
|
GST_INDEX_FLAG_LAST = GST_OBJECT_FLAG_LAST + 8
|
|
} GstIndexFlags;
|
|
|
|
#define GST_INDEX_IS_READABLE(obj) (GST_FLAG_IS_SET (obj, GST_INDEX_READABLE))
|
|
#define GST_INDEX_IS_WRITABLE(obj) (GST_FLAG_IS_SET (obj, GST_INDEX_WRITABLE))
|
|
|
|
struct _GstIndex {
|
|
GstObject object;
|
|
|
|
GList *groups;
|
|
GstIndexGroup *curgroup;
|
|
gint maxgroup;
|
|
|
|
GstIndexResolverMethod method;
|
|
GstIndexResolver resolver;
|
|
gpointer resolver_user_data;
|
|
|
|
GstIndexFilter filter;
|
|
gpointer filter_user_data;
|
|
|
|
GHashTable *writers;
|
|
gint last_id;
|
|
|
|
gpointer _gst_reserved[GST_PADDING];
|
|
};
|
|
|
|
struct _GstIndexClass {
|
|
GstObjectClass parent_class;
|
|
|
|
gboolean (*get_writer_id) (GstIndex *index, gint *writer_id, gchar *writer_string);
|
|
|
|
void (*commit) (GstIndex *index, gint id);
|
|
|
|
/* abstract methods */
|
|
void (*add_entry) (GstIndex *index, GstIndexEntry *entry);
|
|
|
|
GstIndexEntry* (*get_assoc_entry) (GstIndex *index, gint id,
|
|
GstIndexLookupMethod method, GstAssocFlags flags,
|
|
GstFormat format, gint64 value,
|
|
GCompareDataFunc func,
|
|
gpointer user_data);
|
|
/* signals */
|
|
void (*entry_added) (GstIndex *index, GstIndexEntry *entry);
|
|
|
|
gpointer _gst_reserved[GST_PADDING];
|
|
};
|
|
|
|
GType gst_index_get_type (void);
|
|
GstIndex* gst_index_new (void);
|
|
void gst_index_commit (GstIndex *index, gint id);
|
|
|
|
gint gst_index_get_group (GstIndex *index);
|
|
gint gst_index_new_group (GstIndex *index);
|
|
gboolean gst_index_set_group (GstIndex *index, gint groupnum);
|
|
|
|
void gst_index_set_certainty (GstIndex *index,
|
|
GstIndexCertainty certainty);
|
|
GstIndexCertainty gst_index_get_certainty (GstIndex *index);
|
|
|
|
void gst_index_set_filter (GstIndex *index,
|
|
GstIndexFilter filter, gpointer user_data);
|
|
void gst_index_set_resolver (GstIndex *index,
|
|
GstIndexResolver resolver, gpointer user_data);
|
|
|
|
gboolean gst_index_get_writer_id (GstIndex *index, GstObject *writer, gint *id);
|
|
|
|
GstIndexEntry* gst_index_add_format (GstIndex *index, gint id, GstFormat format);
|
|
GstIndexEntry* gst_index_add_association (GstIndex *index, gint id, GstAssocFlags flags,
|
|
GstFormat format, gint64 value, ...);
|
|
GstIndexEntry* gst_index_add_object (GstIndex *index, gint id, gchar *key,
|
|
GType type, gpointer object);
|
|
GstIndexEntry* gst_index_add_id (GstIndex *index, gint id,
|
|
gchar *description);
|
|
|
|
GstIndexEntry* gst_index_get_assoc_entry (GstIndex *index, gint id,
|
|
GstIndexLookupMethod method, GstAssocFlags flags,
|
|
GstFormat format, gint64 value);
|
|
GstIndexEntry* gst_index_get_assoc_entry_full (GstIndex *index, gint id,
|
|
GstIndexLookupMethod method, GstAssocFlags flags,
|
|
GstFormat format, gint64 value,
|
|
GCompareDataFunc func,
|
|
gpointer user_data);
|
|
|
|
/* working with index entries */
|
|
GType gst_index_entry_get_type (void);
|
|
GstIndexEntry * gst_index_entry_copy (GstIndexEntry *entry);
|
|
void gst_index_entry_free (GstIndexEntry *entry);
|
|
gboolean gst_index_entry_assoc_map (GstIndexEntry *entry,
|
|
GstFormat format, gint64 *value);
|
|
/*
|
|
* creating indexs
|
|
*
|
|
*/
|
|
#define GST_TYPE_INDEX_FACTORY (gst_index_factory_get_type())
|
|
#define GST_INDEX_FACTORY(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_INDEX_FACTORY, GstIndexFactory))
|
|
#define GST_IS_INDEX_FACTORY(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_INDEX_FACTORY))
|
|
#define GST_INDEX_FACTORY_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_INDEX_FACTORY, GstIndexFactoryClass))
|
|
#define GST_IS_INDEX_FACTORY_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_INDEX_FACTORY))
|
|
#define GST_INDEX_FACTORY_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_INDEX_FACTORY, GstIndexFactoryClass))
|
|
|
|
typedef struct _GstIndexFactory GstIndexFactory;
|
|
typedef struct _GstIndexFactoryClass GstIndexFactoryClass;
|
|
|
|
struct _GstIndexFactory {
|
|
GstPluginFeature feature;
|
|
|
|
gchar *longdesc; /* long description of the index (well, don't overdo it..) */
|
|
GType type; /* unique GType of the index */
|
|
|
|
gpointer _gst_reserved[GST_PADDING];
|
|
};
|
|
|
|
struct _GstIndexFactoryClass {
|
|
GstPluginFeatureClass parent;
|
|
|
|
gpointer _gst_reserved[GST_PADDING];
|
|
};
|
|
|
|
GType gst_index_factory_get_type (void);
|
|
|
|
GstIndexFactory* gst_index_factory_new (const gchar *name,
|
|
const gchar *longdesc, GType type);
|
|
void gst_index_factory_destroy (GstIndexFactory *factory);
|
|
|
|
GstIndexFactory* gst_index_factory_find (const gchar *name);
|
|
|
|
GstIndex* gst_index_factory_create (GstIndexFactory *factory);
|
|
GstIndex* gst_index_factory_make (const gchar *name);
|
|
|
|
G_END_DECLS
|
|
|
|
#endif /* __GST_INDEX_H__ */
|