--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/gstreamer_core/gst/gstquery.h Thu Dec 17 08:53:32 2009 +0200
@@ -0,0 +1,383 @@
+/* GStreamer
+ * Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
+ * 2000 Wim Taymans <wim.taymans@chello.be>
+ * 2005 Wim Taymans <wim@fluendo.com>
+ *
+ * gstquery.h: GstQuery API declaration
+ *
+ * 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_QUERY_H__
+#define __GST_QUERY_H__
+
+#include <glib.h>
+
+#include <gst/gstiterator.h>
+#include <gst/gstminiobject.h>
+#include <gst/gststructure.h>
+#include <gst/gstformat.h>
+
+G_BEGIN_DECLS
+
+/**
+ * GstQueryType:
+ * @GST_QUERY_NONE: invalid query type
+ * @GST_QUERY_POSITION: current position in stream
+ * @GST_QUERY_DURATION: total duration of the stream
+ * @GST_QUERY_LATENCY: latency of stream
+ * @GST_QUERY_JITTER: current jitter of stream
+ * @GST_QUERY_RATE: current rate of the stream
+ * @GST_QUERY_SEEKING: seeking capabilities
+ * @GST_QUERY_SEGMENT: segment start/stop positions
+ * @GST_QUERY_CONVERT: convert values between formats
+ * @GST_QUERY_FORMATS: query supported formats for convert
+ *
+ * Standard predefined Query types
+ */
+/* NOTE: don't forget to update the table in gstquery.c when changing
+ * this enum */
+typedef enum {
+ GST_QUERY_NONE = 0,
+ GST_QUERY_POSITION,
+ GST_QUERY_DURATION,
+ GST_QUERY_LATENCY,
+ GST_QUERY_JITTER, /* not in draft-query, necessary? */
+ GST_QUERY_RATE,
+ GST_QUERY_SEEKING,
+ GST_QUERY_SEGMENT,
+ GST_QUERY_CONVERT,
+ GST_QUERY_FORMATS
+} GstQueryType;
+
+typedef struct _GstQueryTypeDefinition GstQueryTypeDefinition;
+typedef struct _GstQuery GstQuery;
+typedef struct _GstQueryClass GstQueryClass;
+
+/**
+ * GstQueryTypeDefinition:
+ * @value: the unique id of the Query type
+ * @nick: a short nick
+ * @description: a longer description of the query type
+ * @quark: the quark for the nick
+ *
+ * A Query Type definition
+ */
+struct _GstQueryTypeDefinition
+{
+ GstQueryType value;
+ gchar *nick;
+ gchar *description;
+ GQuark quark;
+};
+
+#define GST_TYPE_QUERY (gst_query_get_type())
+#define GST_IS_QUERY(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_QUERY))
+#define GST_IS_QUERY_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_QUERY))
+#define GST_QUERY_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_QUERY, GstQueryClass))
+#define GST_QUERY(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_QUERY, GstQuery))
+#define GST_QUERY_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_QUERY, GstQueryClass))
+
+/**
+ * GST_QUERY_TYPE:
+ * @query: the query to query
+ *
+ * Get the #GstQueryType of the query.
+ */
+#define GST_QUERY_TYPE(query) (((GstQuery*)(query))->type)
+
+/**
+ * GST_QUERY_TYPE_NAME:
+ * @query: the query to query
+ *
+ * Get a constant string representation of the #GstQueryType of the query.
+ *
+ * Since: 0.10.4
+ */
+#define GST_QUERY_TYPE_NAME(query) (gst_query_type_get_name(GST_QUERY_TYPE(query)))
+
+
+/**
+ * GstQuery:
+ * @mini_object: The parent #GstMiniObject type
+ * @type: the #GstQueryType
+ * @structure: the #GstStructure containing the query details.
+ *
+ * The #GstQuery structure.
+ */
+struct _GstQuery
+{
+ GstMiniObject mini_object;
+
+ /*< public > *//* with COW */
+ GstQueryType type;
+
+ GstStructure *structure;
+
+ /*< private > */
+ gpointer _gst_reserved;
+};
+
+struct _GstQueryClass {
+ GstMiniObjectClass mini_object_class;
+
+ /*< private > */
+ gpointer _gst_reserved[GST_PADDING];
+};
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+
+const gchar* gst_query_type_get_name (GstQueryType query);
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+GQuark gst_query_type_to_quark (GstQueryType query);
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+
+GType gst_query_get_type (void);
+
+/* register a new query */
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+GstQueryType gst_query_type_register (const gchar *nick,
+ const gchar *description);
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+GstQueryType gst_query_type_get_by_nick (const gchar *nick);
+
+/* check if a query is in an array of querys */
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+gboolean gst_query_types_contains (const GstQueryType *types,
+ GstQueryType type);
+
+/* query for query details */
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+
+G_CONST_RETURN GstQueryTypeDefinition*
+ gst_query_type_get_details (GstQueryType type);
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+GstIterator* gst_query_type_iterate_definitions (void);
+
+/* refcounting */
+/**
+ * gst_query_ref:
+ * @q: a #GstQuery to increase the refcount of.
+ *
+ * Increases the refcount of the given query by one.
+ */
+#define gst_query_ref(q) GST_QUERY (gst_mini_object_ref (GST_MINI_OBJECT (q)))
+/**
+ * gst_query_unref:
+ * @q: a #GstQuery to decrease the refcount of.
+ *
+ * Decreases the refcount of the query. If the refcount reaches 0, the query
+ * will be freed.
+ */
+#define gst_query_unref(q) gst_mini_object_unref (GST_MINI_OBJECT (q))
+
+/* copy query */
+/**
+ * gst_query_copy:
+ * @q: a #GstQuery to copy.
+ *
+ * Copies the given query using the copy function of the parent #GstData
+ * structure.
+ */
+#define gst_query_copy(q) GST_QUERY (gst_mini_object_copy (GST_MINI_OBJECT (q)))
+/**
+ * gst_query_make_writable:
+ * @q: a #GstQuery to make writable
+ *
+ * Makes a writable query from the given query.
+ */
+#define gst_query_make_writable(q) GST_QUERY (gst_mini_object_make_writable (GST_MINI_OBJECT (q)))
+
+/* position query */
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+GstQuery* gst_query_new_position (GstFormat format);
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+void gst_query_set_position (GstQuery *query, GstFormat format, gint64 cur);
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+void gst_query_parse_position (GstQuery *query, GstFormat *format, gint64 *cur);
+
+/* duration query */
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+GstQuery* gst_query_new_duration (GstFormat format);
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+void gst_query_set_duration (GstQuery *query, GstFormat format, gint64 duration);
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+void gst_query_parse_duration (GstQuery *query, GstFormat *format, gint64 *duration);
+
+/* latency query */
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+GstQuery* gst_query_new_latency (void);
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+void gst_query_set_latency (GstQuery *query, gboolean live, GstClockTime min_latency,
+ GstClockTime max_latency);
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+void gst_query_parse_latency (GstQuery *query, gboolean *live, GstClockTime *min_latency,
+ GstClockTime *max_latency);
+
+/* convert query */
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+GstQuery* gst_query_new_convert (GstFormat src_format, gint64 value, GstFormat dest_format);
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+void gst_query_set_convert (GstQuery *query, GstFormat src_format, gint64 src_value,
+ GstFormat dest_format, gint64 dest_value);
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+void gst_query_parse_convert (GstQuery *query, GstFormat *src_format, gint64 *src_value,
+ GstFormat *dest_format, gint64 *dest_value);
+/* segment query */
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+GstQuery* gst_query_new_segment (GstFormat format);
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+void gst_query_set_segment (GstQuery *query, gdouble rate, GstFormat format,
+ gint64 start_value, gint64 stop_value);
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+void gst_query_parse_segment (GstQuery *query, gdouble *rate, GstFormat *format,
+ gint64 *start_value, gint64 *stop_value);
+
+/* application specific query */
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+GstQuery * gst_query_new_application (GstQueryType type,
+ GstStructure *structure);
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+GstStructure * gst_query_get_structure (GstQuery *query);
+
+/* seeking query */
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+GstQuery* gst_query_new_seeking (GstFormat format);
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+void gst_query_set_seeking (GstQuery *query, GstFormat format,
+ gboolean seekable,
+ gint64 segment_start,
+ gint64 segment_end);
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+void gst_query_parse_seeking (GstQuery *query, GstFormat *format,
+ gboolean *seekable,
+ gint64 *segment_start,
+ gint64 *segment_end);
+/* formats query */
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+GstQuery* gst_query_new_formats (void);
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+void gst_query_set_formats (GstQuery *query, gint n_formats, ...);
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+void gst_query_set_formatsv (GstQuery *query, gint n_formats, GstFormat *formats);
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+void gst_query_parse_formats_length (GstQuery *query, guint *n_formats);
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+void gst_query_parse_formats_nth (GstQuery *query, guint nth, GstFormat *format);
+
+G_END_DECLS
+
+#endif /* __GST_QUERY_H__ */
+