author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Fri, 22 Jan 2010 09:59:59 +0200 | |
changeset 2 | 5505e8908944 |
parent 0 | 0e761a78d257 |
child 7 | 567bb019e3e3 |
permissions | -rw-r--r-- |
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/* 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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* 2005 Wim Taymans <wim@fluendo.com> |
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* |
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* gstquery.h: GstQuery API declaration |
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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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#ifndef __GST_QUERY_H__ |
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#define __GST_QUERY_H__ |
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#include <glib.h> |
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#include <gst/gstiterator.h> |
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#include <gst/gstminiobject.h> |
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#include <gst/gststructure.h> |
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#include <gst/gstformat.h> |
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G_BEGIN_DECLS |
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/** |
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* GstQueryType: |
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* @GST_QUERY_NONE: invalid query type |
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* @GST_QUERY_POSITION: current position in stream |
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* @GST_QUERY_DURATION: total duration of the stream |
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* @GST_QUERY_LATENCY: latency of stream |
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* @GST_QUERY_JITTER: current jitter of stream |
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* @GST_QUERY_RATE: current rate of the stream |
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* @GST_QUERY_SEEKING: seeking capabilities |
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* @GST_QUERY_SEGMENT: segment start/stop positions |
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* @GST_QUERY_CONVERT: convert values between formats |
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* @GST_QUERY_FORMATS: query supported formats for convert |
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* |
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* Standard predefined Query types |
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*/ |
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/* NOTE: don't forget to update the table in gstquery.c when changing |
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* this enum */ |
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typedef enum { |
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GST_QUERY_NONE = 0, |
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GST_QUERY_POSITION, |
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GST_QUERY_DURATION, |
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GST_QUERY_LATENCY, |
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GST_QUERY_JITTER, /* not in draft-query, necessary? */ |
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GST_QUERY_RATE, |
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GST_QUERY_SEEKING, |
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GST_QUERY_SEGMENT, |
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GST_QUERY_CONVERT, |
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GST_QUERY_FORMATS |
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} GstQueryType; |
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typedef struct _GstQueryTypeDefinition GstQueryTypeDefinition; |
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typedef struct _GstQuery GstQuery; |
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typedef struct _GstQueryClass GstQueryClass; |
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/** |
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* GstQueryTypeDefinition: |
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* @value: the unique id of the Query type |
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* @nick: a short nick |
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* @description: a longer description of the query type |
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* @quark: the quark for the nick |
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* |
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* A Query Type definition |
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*/ |
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struct _GstQueryTypeDefinition |
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{ |
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GstQueryType value; |
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gchar *nick; |
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gchar *description; |
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GQuark quark; |
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}; |
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#define GST_TYPE_QUERY (gst_query_get_type()) |
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#define GST_IS_QUERY(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_QUERY)) |
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#define GST_IS_QUERY_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_QUERY)) |
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#define GST_QUERY_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_QUERY, GstQueryClass)) |
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#define GST_QUERY(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_QUERY, GstQuery)) |
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#define GST_QUERY_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_QUERY, GstQueryClass)) |
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/** |
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* GST_QUERY_TYPE: |
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* @query: the query to query |
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* |
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* Get the #GstQueryType of the query. |
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*/ |
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#define GST_QUERY_TYPE(query) (((GstQuery*)(query))->type) |
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/** |
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* GST_QUERY_TYPE_NAME: |
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* @query: the query to query |
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* |
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* Get a constant string representation of the #GstQueryType of the query. |
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* |
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* Since: 0.10.4 |
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*/ |
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#define GST_QUERY_TYPE_NAME(query) (gst_query_type_get_name(GST_QUERY_TYPE(query))) |
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/** |
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* GstQuery: |
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* @mini_object: The parent #GstMiniObject type |
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* @type: the #GstQueryType |
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* @structure: the #GstStructure containing the query details. |
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* |
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* The #GstQuery structure. |
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*/ |
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struct _GstQuery |
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{ |
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GstMiniObject mini_object; |
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/*< public > *//* with COW */ |
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GstQueryType type; |
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GstStructure *structure; |
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/*< private > */ |
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gpointer _gst_reserved; |
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}; |
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struct _GstQueryClass { |
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GstMiniObjectClass mini_object_class; |
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/*< private > */ |
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gpointer _gst_reserved[GST_PADDING]; |
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}; |
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#ifdef __SYMBIAN32__ |
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IMPORT_C |
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#endif |
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const gchar* gst_query_type_get_name (GstQueryType query); |
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#ifdef __SYMBIAN32__ |
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IMPORT_C |
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#endif |
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GQuark gst_query_type_to_quark (GstQueryType query); |
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#ifdef __SYMBIAN32__ |
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IMPORT_C |
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#endif |
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GType gst_query_get_type (void); |
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/* register a new query */ |
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#ifdef __SYMBIAN32__ |
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IMPORT_C |
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#endif |
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GstQueryType gst_query_type_register (const gchar *nick, |
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const gchar *description); |
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#ifdef __SYMBIAN32__ |
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IMPORT_C |
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#endif |
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GstQueryType gst_query_type_get_by_nick (const gchar *nick); |
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/* check if a query is in an array of querys */ |
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#ifdef __SYMBIAN32__ |
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IMPORT_C |
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#endif |
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gboolean gst_query_types_contains (const GstQueryType *types, |
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GstQueryType type); |
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/* query for query details */ |
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#ifdef __SYMBIAN32__ |
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IMPORT_C |
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#endif |
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G_CONST_RETURN GstQueryTypeDefinition* |
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gst_query_type_get_details (GstQueryType type); |
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#ifdef __SYMBIAN32__ |
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IMPORT_C |
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#endif |
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GstIterator* gst_query_type_iterate_definitions (void); |
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/* refcounting */ |
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/** |
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* gst_query_ref: |
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* @q: a #GstQuery to increase the refcount of. |
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* |
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* Increases the refcount of the given query by one. |
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*/ |
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#define gst_query_ref(q) GST_QUERY (gst_mini_object_ref (GST_MINI_OBJECT (q))) |
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/** |
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* gst_query_unref: |
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* @q: a #GstQuery to decrease the refcount of. |
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* |
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* Decreases the refcount of the query. If the refcount reaches 0, the query |
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* will be freed. |
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*/ |
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#define gst_query_unref(q) gst_mini_object_unref (GST_MINI_OBJECT (q)) |
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/* copy query */ |
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/** |
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* gst_query_copy: |
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* @q: a #GstQuery to copy. |
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* |
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* Copies the given query using the copy function of the parent #GstData |
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* structure. |
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*/ |
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#define gst_query_copy(q) GST_QUERY (gst_mini_object_copy (GST_MINI_OBJECT (q))) |
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/** |
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* gst_query_make_writable: |
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* @q: a #GstQuery to make writable |
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* |
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* Makes a writable query from the given query. |
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*/ |
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#define gst_query_make_writable(q) GST_QUERY (gst_mini_object_make_writable (GST_MINI_OBJECT (q))) |
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/* position query */ |
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#ifdef __SYMBIAN32__ |
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IMPORT_C |
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#endif |
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GstQuery* gst_query_new_position (GstFormat format); |
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#ifdef __SYMBIAN32__ |
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IMPORT_C |
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#endif |
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void gst_query_set_position (GstQuery *query, GstFormat format, gint64 cur); |
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#ifdef __SYMBIAN32__ |
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IMPORT_C |
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#endif |
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void gst_query_parse_position (GstQuery *query, GstFormat *format, gint64 *cur); |
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/* duration query */ |
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#ifdef __SYMBIAN32__ |
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IMPORT_C |
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#endif |
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GstQuery* gst_query_new_duration (GstFormat format); |
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#ifdef __SYMBIAN32__ |
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IMPORT_C |
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#endif |
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void gst_query_set_duration (GstQuery *query, GstFormat format, gint64 duration); |
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#ifdef __SYMBIAN32__ |
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IMPORT_C |
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#endif |
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void gst_query_parse_duration (GstQuery *query, GstFormat *format, gint64 *duration); |
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/* latency query */ |
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#ifdef __SYMBIAN32__ |
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IMPORT_C |
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#endif |
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GstQuery* gst_query_new_latency (void); |
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#ifdef __SYMBIAN32__ |
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IMPORT_C |
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#endif |
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void gst_query_set_latency (GstQuery *query, gboolean live, GstClockTime min_latency, |
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GstClockTime max_latency); |
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#ifdef __SYMBIAN32__ |
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IMPORT_C |
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#endif |
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void gst_query_parse_latency (GstQuery *query, gboolean *live, GstClockTime *min_latency, |
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GstClockTime *max_latency); |
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/* convert query */ |
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#ifdef __SYMBIAN32__ |
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IMPORT_C |
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#endif |
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GstQuery* gst_query_new_convert (GstFormat src_format, gint64 value, GstFormat dest_format); |
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#ifdef __SYMBIAN32__ |
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IMPORT_C |
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#endif |
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void gst_query_set_convert (GstQuery *query, GstFormat src_format, gint64 src_value, |
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GstFormat dest_format, gint64 dest_value); |
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#ifdef __SYMBIAN32__ |
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IMPORT_C |
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#endif |
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void gst_query_parse_convert (GstQuery *query, GstFormat *src_format, gint64 *src_value, |
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GstFormat *dest_format, gint64 *dest_value); |
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/* segment query */ |
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#ifdef __SYMBIAN32__ |
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IMPORT_C |
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#endif |
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GstQuery* gst_query_new_segment (GstFormat format); |
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#ifdef __SYMBIAN32__ |
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#endif |
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void gst_query_set_segment (GstQuery *query, gdouble rate, GstFormat format, |
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gint64 start_value, gint64 stop_value); |
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#ifdef __SYMBIAN32__ |
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IMPORT_C |
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#endif |
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void gst_query_parse_segment (GstQuery *query, gdouble *rate, GstFormat *format, |
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gint64 *start_value, gint64 *stop_value); |
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/* application specific query */ |
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#ifdef __SYMBIAN32__ |
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IMPORT_C |
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#endif |
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GstQuery * gst_query_new_application (GstQueryType type, |
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GstStructure *structure); |
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#ifdef __SYMBIAN32__ |
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IMPORT_C |
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#endif |
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GstStructure * gst_query_get_structure (GstQuery *query); |
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/* seeking query */ |
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#ifdef __SYMBIAN32__ |
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IMPORT_C |
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#endif |
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GstQuery* gst_query_new_seeking (GstFormat format); |
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#ifdef __SYMBIAN32__ |
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IMPORT_C |
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#endif |
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void gst_query_set_seeking (GstQuery *query, GstFormat format, |
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gboolean seekable, |
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gint64 segment_start, |
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gint64 segment_end); |
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#ifdef __SYMBIAN32__ |
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IMPORT_C |
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#endif |
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void gst_query_parse_seeking (GstQuery *query, GstFormat *format, |
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gboolean *seekable, |
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gint64 *segment_start, |
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gint64 *segment_end); |
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/* formats query */ |
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#ifdef __SYMBIAN32__ |
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IMPORT_C |
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#endif |
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GstQuery* gst_query_new_formats (void); |
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#ifdef __SYMBIAN32__ |
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IMPORT_C |
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#endif |
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void gst_query_set_formats (GstQuery *query, gint n_formats, ...); |
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#endif |
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void gst_query_set_formatsv (GstQuery *query, gint n_formats, GstFormat *formats); |
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IMPORT_C |
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#endif |
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void gst_query_parse_formats_length (GstQuery *query, guint *n_formats); |
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IMPORT_C |
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#endif |
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void gst_query_parse_formats_nth (GstQuery *query, guint nth, GstFormat *format); |
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G_END_DECLS |
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#endif /* __GST_QUERY_H__ */ |
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