--- a/gst_plugins_base/gst-libs/gst/interfaces/navigation.c Tue Aug 31 15:30:33 2010 +0300
+++ b/gst_plugins_base/gst-libs/gst/interfaces/navigation.c Wed Sep 01 12:16:41 2010 +0100
@@ -1,8 +1,7 @@
/* GStreamer Navigation
* Copyright (C) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
- * Copyright (C) 2007-2009 Jan Schmidt <thaytan@noraisin.net>
*
- * navigation.c: navigation event virtual class function wrappers
+ * navigation.c: navigation design virtual class function wrappers
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
@@ -20,62 +19,18 @@
* Boston, MA 02111-1307, USA.
*/
-/**
- * SECTION:gstnavigation
- * @short_description: Interface for creating, sending and parsing navigation
- * events.
- *
- * The Navigation interface is used for creating and injecting navigation related
- * events such as mouse button presses, cursor motion and key presses. The associated
- * library also provides methods for parsing received events, and for sending and
- * receiving navigation related bus events. One main usecase is DVD menu navigation.
- *
- * The main parts of the API are:
- * <itemizedlist>
- * <listitem>
- * <para>
- * The GstNavigation interface, implemented by elements which provide an application
- * with the ability to create and inject navigation events into the pipeline.
- * </para>
- * </listitem>
- * <listitem>
- * <para>
- * GstNavigation event handling API. GstNavigation events are created in response to
- * calls on a GstNavigation interface implementation, and sent in the pipeline. Upstream
- * elements can use the navigation event API functions to parse the contents of received
- * messages.
- * </para>
- * </listitem>
- * <listitem>
- * <para>
- * GstNavigation message handling API. GstNavigation messages may be sent on the message
- * bus to inform applications of navigation related changes in the pipeline, such as the
- * mouse moving over a clickable region, or the set of available angles changing.
- * </para><para>
- * The GstNavigation message functions provide functions for creating and parsing
- * custom bus messages for signalling GstNavigation changes.
- * </para>
- * </listitem>
- * </itemizedlist>
- */
-
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gst/interfaces/navigation.h>
-#include <gst/interfaces/interfaces-enumtypes.h>
static void gst_navigation_class_init (GstNavigationInterface * iface);
-
-#define GST_NAVIGATION_MESSAGE_NAME "GstNavigationMessage"
-#define GST_NAVIGATION_QUERY_NAME "GstNavigationQuery"
-#define GST_NAVIGATION_EVENT_NAME "application/x-gst-navigation"
-
#ifdef __SYMBIAN32__
EXPORT_C
#endif
+
GType
gst_navigation_get_type (void)
{
@@ -123,807 +78,30 @@
iface->send_event (navigation, structure);
}
}
-
-/**
- * gst_navigation_send_mouse_event:
- * @navigation: The navigation interface instance
- * @event: The type of the key event. Recognised values are "key-press" and
- * "key-release"
- * @key: Character representation of the key. This is typically as produced
- * by XKeysymToString.
- */
#ifdef __SYMBIAN32__
EXPORT_C
#endif
+
void
gst_navigation_send_key_event (GstNavigation * navigation, const char *event,
const char *key)
{
gst_navigation_send_event (navigation,
- gst_structure_new (GST_NAVIGATION_EVENT_NAME, "event", G_TYPE_STRING,
+ gst_structure_new ("application/x-gst-navigation", "event", G_TYPE_STRING,
event, "key", G_TYPE_STRING, key, NULL));
}
-
-/**
- * gst_navigation_send_mouse_event:
- * @navigation: The navigation interface instance
- * @event: The type of mouse event, as a text string. Recognised values are
- * "mouse-button-press", "mouse-button-release" and "mouse-move".
- * @button: The button number of the button being pressed or released. Pass 0
- * for mouse-move events.
- * @x: The x coordinate of the mouse event.
- * @y: The y coordinate of the mouse event.
- *
- * Sends a mouse event to the navigation interface. Mouse event coordinates
- * are sent relative to the display space of the related output area. This is
- * usually the size in pixels of the window associated with the element
- * implementing the #GstNavigation interface.
- *
- */
#ifdef __SYMBIAN32__
EXPORT_C
#endif
+
void
gst_navigation_send_mouse_event (GstNavigation * navigation, const char *event,
int button, double x, double y)
{
gst_navigation_send_event (navigation,
- gst_structure_new (GST_NAVIGATION_EVENT_NAME, "event", G_TYPE_STRING,
+ gst_structure_new ("application/x-gst-navigation", "event", G_TYPE_STRING,
event, "button", G_TYPE_INT, button, "pointer_x", G_TYPE_DOUBLE, x,
"pointer_y", G_TYPE_DOUBLE, y, NULL));
}
-
-/**
- * gst_navigation_send_command:
- * @navigation: The navigation interface instance
- * @command: The command to issue
- *
- * Sends the indicated command to the navigation interface.
- *
- * Since: 0.10.23
- */
-#ifdef __SYMBIAN32__
-EXPORT_C
-#endif
-
-void
-gst_navigation_send_command (GstNavigation * navigation,
- GstNavigationCommand command)
-{
- gst_navigation_send_event (navigation,
- gst_structure_new (GST_NAVIGATION_EVENT_NAME, "event", G_TYPE_STRING,
- "command", "command-code", G_TYPE_UINT, (guint) command, NULL));
-}
-
-/* Navigation Queries */
-
-#define GST_NAVIGATION_QUERY_HAS_TYPE(query,query_type) \
-(gst_navigation_query_get_type (query) == GST_NAVIGATION_QUERY_ ## query_type)
-
-/**
- * gst_navigation_query_get_type:
- * @query: The query to inspect
- *
- * Inspect a #GstQuery and return the #GstNavigationQueryType associated with
- * it if it is a #GstNavigation query.
- *
- * Returns: The #GstNavigationQueryType of the query, or
- * #GST_NAVIGATION_QUERY_INVALID
- * Since: 0.10.23
- */
-#ifdef __SYMBIAN32__
-EXPORT_C
-#endif
-
-GstNavigationQueryType
-gst_navigation_query_get_type (GstQuery * query)
-{
- const GstStructure *s;
- const gchar *q_type;
-
- if (query == NULL || GST_QUERY_TYPE (query) != GST_QUERY_CUSTOM)
- return GST_NAVIGATION_QUERY_INVALID;
-
- s = gst_query_get_structure (query);
- if (s == NULL || !gst_structure_has_name (s, GST_NAVIGATION_QUERY_NAME))
- return GST_NAVIGATION_QUERY_INVALID;
-
- q_type = gst_structure_get_string (s, "type");
- if (q_type == NULL)
- return GST_NAVIGATION_QUERY_INVALID;
-
- if (g_str_equal (q_type, "commands"))
- return GST_NAVIGATION_QUERY_COMMANDS;
- else if (g_str_equal (q_type, "angles"))
- return GST_NAVIGATION_QUERY_ANGLES;
-
- return GST_NAVIGATION_QUERY_INVALID;
-}
-
-/**
- * gst_navigation_query_new_commands:
- *
- * Create a new #GstNavigation commands query. When executed, it will
- * query the pipeline for the set of currently available commands.
- *
- * Returns: The new query.
- * Since: 0.10.23
- */
-#ifdef __SYMBIAN32__
-EXPORT_C
-#endif
-
-GstQuery *
-gst_navigation_query_new_commands (void)
-{
- GstQuery *query;
- GstStructure *structure;
-
- structure = gst_structure_new (GST_NAVIGATION_QUERY_NAME,
- "type", G_TYPE_STRING, "commands", NULL);
- query = gst_query_new_application (GST_QUERY_CUSTOM, structure);
-
- return query;
-}
-
-static void
-gst_query_list_add_command (GValue * list, GstNavigationCommand val)
-{
- GValue item = { 0, };
-
- g_value_init (&item, GST_TYPE_NAVIGATION_COMMAND);
- g_value_set_enum (&item, val);
- gst_value_list_append_value (list, &item);
- g_value_unset (&item);
-}
-
-/**
- * gst_navigation_query_set_commands:
- * @query: a #GstQuery
- * @n_cmds: the number of commands to set.
- * @...: A list of @GstNavigationCommand values, @n_cmds entries long.
- *
- * Set the #GstNavigation command query result fields in @query. The number
- * of commands passed must be equal to @n_commands.
- *
- * Since: 0.10.23
- */
-#ifdef __SYMBIAN32__
-EXPORT_C
-#endif
-
-void
-gst_navigation_query_set_commands (GstQuery * query, gint n_cmds, ...)
-{
- va_list ap;
- GValue list = { 0, };
- GstStructure *structure;
- gint i;
-
- g_return_if_fail (GST_NAVIGATION_QUERY_HAS_TYPE (query, COMMANDS));
-
- g_value_init (&list, GST_TYPE_LIST);
-
- va_start (ap, n_cmds);
- for (i = 0; i < n_cmds; i++) {
- GstNavigationCommand val = va_arg (ap, GstNavigationCommand);
- gst_query_list_add_command (&list, val);
- }
- va_end (ap);
-
- structure = gst_query_get_structure (query);
- gst_structure_set_value (structure, "commands", &list);
-
- g_value_unset (&list);
-}
-
-/**
- * gst_navigation_query_set_commandsv:
- * @query: a #GstQuery
- * @n_cmds: the number of commands to set.
- * @cmds: An array containing @n_cmds @GstNavigationCommand values.
- *
- * Set the #GstNavigation command query result fields in @query. The number
- * of commands passed must be equal to @n_commands.
- *
- * Since: 0.10.23
- */
-#ifdef __SYMBIAN32__
-EXPORT_C
-#endif
-
-void
-gst_navigation_query_set_commandsv (GstQuery * query, gint n_cmds,
- GstNavigationCommand * cmds)
-{
- GValue list = { 0, };
- GstStructure *structure;
- gint i;
-
- g_return_if_fail (GST_NAVIGATION_QUERY_HAS_TYPE (query, COMMANDS));
-
- g_value_init (&list, GST_TYPE_LIST);
- for (i = 0; i < n_cmds; i++) {
- gst_query_list_add_command (&list, cmds[i]);
- }
- structure = gst_query_get_structure (query);
- gst_structure_set_value (structure, "commands", &list);
-
- g_value_unset (&list);
-}
-
-/**
- * gst_navigation_query_parse_commands_length:
- * @query: a #GstQuery
- * @n_cmds: the number of commands in this query.
- *
- * Parse the number of commands in the #GstNavigation commands @query.
- *
- * Returns: %TRUE if the query could be successfully parsed. %FALSE if not.
- * Since: 0.10.23
- */
-#ifdef __SYMBIAN32__
-EXPORT_C
-#endif
-
-gboolean
-gst_navigation_query_parse_commands_length (GstQuery * query, guint * n_cmds)
-{
- GstStructure *structure;
- const GValue *list;
-
- g_return_val_if_fail (GST_NAVIGATION_QUERY_HAS_TYPE (query, COMMANDS), FALSE);
-
- if (n_cmds == NULL)
- return TRUE;
-
- structure = gst_query_get_structure (query);
- list = gst_structure_get_value (structure, "commands");
- if (list == NULL)
- *n_cmds = 0;
- else
- *n_cmds = gst_value_list_get_size (list);
-
- return TRUE;
-}
-
-/**
- * gst_navigation_query_parse_commands_nth:
- * @query: a #GstQuery
- * @nth: the nth command to retrieve.
- * @cmd: a pointer to store the nth command into.
- *
- * Parse the #GstNavigation command query and retrieve the @nth command from
- * it into @cmd. If the list contains less elements than @nth, @cmd will be
- * set to #GST_NAVIGATION_COMMAND_INVALID.
- *
- * Returns: %TRUE if the query could be successfully parsed. %FALSE if not.
- * Since: 0.10.23
- */
-#ifdef __SYMBIAN32__
-EXPORT_C
-#endif
-
-gboolean
-gst_navigation_query_parse_commands_nth (GstQuery * query, guint nth,
- GstNavigationCommand * cmd)
-{
- GstStructure *structure;
- const GValue *list;
-
- g_return_val_if_fail (GST_NAVIGATION_QUERY_HAS_TYPE (query, COMMANDS), FALSE);
-
- if (cmd == NULL)
- return TRUE;
-
- structure = gst_query_get_structure (query);
- list = gst_structure_get_value (structure, "commands");
- if (list == NULL) {
- *cmd = GST_NAVIGATION_COMMAND_INVALID;
- } else {
- if (nth < gst_value_list_get_size (list)) {
- *cmd = (GstNavigationCommand)
- g_value_get_enum (gst_value_list_get_value (list, nth));
- } else
- *cmd = GST_NAVIGATION_COMMAND_INVALID;
- }
-
- return TRUE;
-}
-
-/**
- * gst_navigation_query_new_angles:
- *
- * Create a new #GstNavigation angles query. When executed, it will
- * query the pipeline for the set of currently available angles, which may be
- * greater than one in a multiangle video.
- *
- * Returns: The new query.
- * Since: 0.10.23
- */
-#ifdef __SYMBIAN32__
-EXPORT_C
-#endif
-
-GstQuery *
-gst_navigation_query_new_angles (void)
-{
- GstQuery *query;
- GstStructure *structure;
-
- structure = gst_structure_new (GST_NAVIGATION_QUERY_NAME,
- "type", G_TYPE_STRING, "angles", NULL);
- query = gst_query_new_application (GST_QUERY_CUSTOM, structure);
-
- return query;
-}
-
-/**
- * gst_navigation_query_set_angles:
- * @query: a #GstQuery
- * @cur_angle: the current viewing angle to set.
- * @n_angles: the number of viewing angles to set.
- *
- * Set the #GstNavigation angles query result field in @query.
- *
- * Since: 0.10.23
- */
-#ifdef __SYMBIAN32__
-EXPORT_C
-#endif
-
-void
-gst_navigation_query_set_angles (GstQuery * query, guint cur_angle,
- guint n_angles)
-{
- GstStructure *structure;
-
- g_return_if_fail (GST_NAVIGATION_QUERY_HAS_TYPE (query, ANGLES));
-
- structure = gst_query_get_structure (query);
- gst_structure_set (structure,
- "angle", G_TYPE_UINT, cur_angle, "angles", G_TYPE_UINT, n_angles, NULL);
-}
-
-/**
- * gst_navigation_query_parse_angles:
- * @query: a #GstQuery
- * @cur_angle: Pointer to a #guint into which to store the currently selected
- * angle value from the query, or NULL
- * @n_angles: Pointer to a #guint into which to store the number of angles
- * value from the query, or NULL
- *
- * Parse the current angle number in the #GstNavigation angles @query into the
- * #guint pointed to by the @cur_angle variable, and the number of available
- * angles into the #guint pointed to by the @n_angles variable.
- *
- * Returns: %TRUE if the query could be successfully parsed. %FALSE if not.
- * Since: 0.10.23
- */
-#ifdef __SYMBIAN32__
-EXPORT_C
-#endif
-
-gboolean
-gst_navigation_query_parse_angles (GstQuery * query, guint * cur_angle,
- guint * n_angles)
-{
- GstStructure *structure;
-
- g_return_val_if_fail (GST_NAVIGATION_QUERY_HAS_TYPE (query, ANGLES), FALSE);
-
- structure = gst_query_get_structure (query);
-
- if (cur_angle)
- g_return_val_if_fail (gst_structure_get_uint (structure,
- "angle", cur_angle), FALSE);
-
- if (n_angles)
- g_return_val_if_fail (gst_structure_get_uint (structure,
- "angles", n_angles), FALSE);
-
- return TRUE;
-}
-
-/* Navigation Messages */
-
-#define GST_NAVIGATION_MESSAGE_HAS_TYPE(msg,msg_type) \
-(gst_navigation_message_get_type (msg) == GST_NAVIGATION_MESSAGE_ ## msg_type)
-
-/**
- * gst_navigation_message_get_type:
- * @message: A #GstMessage to inspect.
- *
- * Check a bus message to see if it is a #GstNavigation event, and return
- * the #GstNavigationMessageType identifying the type of the message if so.
- *
- * Returns: The type of the #GstNavigationMessage, or
- * #GST_NAVIGATION_MESSAGE_INVALID if the message is not a #GstNavigation
- * notification.
- *
- * Since: 0.10.23
- */
-#ifdef __SYMBIAN32__
-EXPORT_C
-#endif
-
-GstNavigationMessageType
-gst_navigation_message_get_type (GstMessage * message)
-{
- const GstStructure *s;
- const gchar *m_type;
-
- if (message == NULL || GST_MESSAGE_TYPE (message) != GST_MESSAGE_ELEMENT)
- return GST_NAVIGATION_MESSAGE_INVALID;
-
- s = gst_message_get_structure (message);
- if (s == NULL || !gst_structure_has_name (s, GST_NAVIGATION_MESSAGE_NAME))
- return GST_NAVIGATION_MESSAGE_INVALID;
-
- m_type = gst_structure_get_string (s, "type");
- if (m_type == NULL)
- return GST_NAVIGATION_MESSAGE_INVALID;
-
- if (g_str_equal (m_type, "mouse-over"))
- return GST_NAVIGATION_MESSAGE_MOUSE_OVER;
- else if (g_str_equal (m_type, "commands-changed"))
- return GST_NAVIGATION_MESSAGE_COMMANDS_CHANGED;
- else if (g_str_equal (m_type, "angles-changed"))
- return GST_NAVIGATION_MESSAGE_ANGLES_CHANGED;
-
- return GST_NAVIGATION_MESSAGE_INVALID;
-}
-
-/**
- * gst_navigation_message_new_mouse_over:
- * @src: A #GstObject to set as source of the new message.
- * @active: %TRUE if the mouse has entered a clickable area of the display.
- * %FALSE if it over a non-clickable area.
- *
- * Creates a new #GstNavigation message with type
- * #GST_NAVIGATION_MESSAGE_MOUSE_OVER.
- *
- * Returns: The new #GstMessage.
- * Since: 0.10.23
- */
-#ifdef __SYMBIAN32__
-EXPORT_C
-#endif
-
-GstMessage *
-gst_navigation_message_new_mouse_over (GstObject * src, gboolean active)
-{
- GstStructure *s;
- GstMessage *m;
-
- s = gst_structure_new (GST_NAVIGATION_MESSAGE_NAME,
- "type", G_TYPE_STRING, "mouse-over", "active", G_TYPE_BOOLEAN, active,
- NULL);
-
- m = gst_message_new_custom (GST_MESSAGE_ELEMENT, src, s);
-
- return m;
-}
-
-/**
- * gst_navigation_message_parse_mouse_over:
- * @message: A #GstMessage to inspect.
- * @active: A pointer to a gboolean to receive the active/inactive state,
- * or NULL.
- *
- * Parse a #GstNavigation message of type #GST_NAVIGATION_MESSAGE_MOUSE_OVER
- * and extract the active/inactive flag. If the mouse over event is marked
- * active, it indicates that the mouse is over a clickable area.
- *
- * Returns: %TRUE if the message could be successfully parsed. %FALSE if not.
- * Since: 0.10.23
- */
-#ifdef __SYMBIAN32__
-EXPORT_C
-#endif
-
-gboolean
-gst_navigation_message_parse_mouse_over (GstMessage * message,
- gboolean * active)
-{
- if (!GST_NAVIGATION_MESSAGE_HAS_TYPE (message, MOUSE_OVER))
- return FALSE;
-
- if (active) {
- const GstStructure *s = gst_message_get_structure (message);
- if (gst_structure_get_boolean (s, "active", active) == FALSE)
- return FALSE;
- }
-
- return TRUE;
-}
-
-/**
- * gst_navigation_message_new_commands_changed:
- * @src: A #GstObject to set as source of the new message.
- *
- * Creates a new #GstNavigation message with type
- * #GST_NAVIGATION_MESSAGE_COMMANDS_CHANGED
- *
- * Returns: The new #GstMessage.
- * Since: 0.10.23
- */
-#ifdef __SYMBIAN32__
-EXPORT_C
-#endif
-
-GstMessage *
-gst_navigation_message_new_commands_changed (GstObject * src)
-{
- GstStructure *s;
- GstMessage *m;
-
- s = gst_structure_new (GST_NAVIGATION_MESSAGE_NAME,
- "type", G_TYPE_STRING, "commands-changed", NULL);
-
- m = gst_message_new_custom (GST_MESSAGE_ELEMENT, src, s);
-
- return m;
-}
-
-/**
- * gst_navigation_message_new_angles_changed:
- * @src: A #GstObject to set as source of the new message.
- * @cur_angle: The currently selected angle.
- * @n_angles: The number of viewing angles now available.
- *
- * Creates a new #GstNavigation message with type
- * #GST_NAVIGATION_MESSAGE_ANGLES_CHANGED for notifying an application
- * that the current angle, or current number of angles available in a
- * multiangle video has changed.
- *
- * Returns: The new #GstMessage.
- * Since: 0.10.23
- */
-#ifdef __SYMBIAN32__
-EXPORT_C
-#endif
-
-GstMessage *
-gst_navigation_message_new_angles_changed (GstObject * src, guint cur_angle,
- guint n_angles)
-{
- GstStructure *s;
- GstMessage *m;
-
- s = gst_structure_new (GST_NAVIGATION_MESSAGE_NAME,
- "type", G_TYPE_STRING, "angles-changed",
- "angle", G_TYPE_UINT, cur_angle, "angles", G_TYPE_UINT, n_angles, NULL);
-
- m = gst_message_new_custom (GST_MESSAGE_ELEMENT, src, s);
-
- return m;
-}
-
-/**
- * gst_navigation_message_parse_angles_changed:
- * @message: A #GstMessage to inspect.
- * @cur_angle: A pointer to a #guint to receive the new current angle number,
- * or NULL
- * @n_angles: A pointer to a #guint to receive the new angle count, or NULL.
- *
- * Parse a #GstNavigation message of type GST_NAVIGATION_MESSAGE_ANGLES_CHANGED
- * and extract the @cur_angle and @n_angles parameters.
- *
- * Returns: %TRUE if the message could be successfully parsed. %FALSE if not.
- * Since: 0.10.23
- */
-#ifdef __SYMBIAN32__
-EXPORT_C
-#endif
-
-gboolean
-gst_navigation_message_parse_angles_changed (GstMessage * message,
- guint * cur_angle, guint * n_angles)
-{
- const GstStructure *s;
-
- g_return_val_if_fail (GST_NAVIGATION_MESSAGE_HAS_TYPE (message,
- ANGLES_CHANGED), FALSE);
-
- s = gst_message_get_structure (message);
- if (cur_angle)
- g_return_val_if_fail (gst_structure_get_uint (s, "angle", cur_angle),
- FALSE);
-
- if (n_angles)
- g_return_val_if_fail (gst_structure_get_uint (s, "angles", n_angles),
- FALSE);
-
- return TRUE;
-}
-
-#define GST_NAVIGATION_EVENT_HAS_TYPE(event,event_type) \
-(gst_navigation_event_get_type (event) == GST_NAVIGATION_EVENT_ ## event_type)
-
-/**
- * gst_navigation_event_get_type:
- * @event: A #GstEvent to inspect.
- *
- * Inspect a #GstEvent and return the #GstNavigationEventType of the event, or
- * #GST_NAVIGATION_EVENT_INVALID if the event is not a #GstNavigation event.
- *
- * Since: 0.10.23
- */
-#ifdef __SYMBIAN32__
-EXPORT_C
-#endif
-
-GstNavigationEventType
-gst_navigation_event_get_type (GstEvent * event)
-{
- const GstStructure *s;
- const gchar *e_type;
-
- if (event == NULL || GST_EVENT_TYPE (event) != GST_EVENT_NAVIGATION)
- return GST_NAVIGATION_EVENT_INVALID;
-
- s = gst_event_get_structure (event);
- if (s == NULL || !gst_structure_has_name (s, GST_NAVIGATION_EVENT_NAME))
- return GST_NAVIGATION_EVENT_INVALID;
-
- e_type = gst_structure_get_string (s, "event");
- if (e_type == NULL)
- return GST_NAVIGATION_EVENT_INVALID;
-
- if (g_str_equal (e_type, "mouse-button-press"))
- return GST_NAVIGATION_EVENT_MOUSE_BUTTON_PRESS;
- else if (g_str_equal (e_type, "mouse-button-release"))
- return GST_NAVIGATION_EVENT_MOUSE_BUTTON_RELEASE;
- else if (g_str_equal (e_type, "mouse-move"))
- return GST_NAVIGATION_EVENT_MOUSE_MOVE;
- else if (g_str_equal (e_type, "key-press"))
- return GST_NAVIGATION_EVENT_KEY_PRESS;
- else if (g_str_equal (e_type, "key-release"))
- return GST_NAVIGATION_EVENT_KEY_RELEASE;
- else if (g_str_equal (e_type, "command"))
- return GST_NAVIGATION_EVENT_COMMAND;
-
- return GST_NAVIGATION_EVENT_INVALID;
-}
-
-/**
- * gst_navigation_event_parse_key_event:
- * @event: A #GstEvent to inspect.
- * @key: A pointer to a location to receive the string identifying the key
- * press. The returned string is owned by the event, and valid only until the
- * event is unreffed.
- *
- * Since: 0.10.23
- */
-#ifdef __SYMBIAN32__
-EXPORT_C
-#endif
-
-gboolean
-gst_navigation_event_parse_key_event (GstEvent * event, const gchar ** key)
-{
- GstNavigationEventType e_type;
- const GstStructure *s;
-
- e_type = gst_navigation_event_get_type (event);
- g_return_val_if_fail (e_type == GST_NAVIGATION_EVENT_KEY_PRESS ||
- e_type == GST_NAVIGATION_EVENT_KEY_RELEASE, FALSE);
-
- if (key) {
- s = gst_event_get_structure (event);
- *key = gst_structure_get_string (s, "key");
- if (*key == NULL)
- return FALSE;
- }
-
- return TRUE;
-}
-
-/**
- * gst_navigation_event_parse_mouse_button_event:
- * @event: A #GstEvent to inspect.
- * @button: Pointer to a gint that will receive the button number associated
- * with the event.
- * @x: Pointer to a gdouble to receive the x coordinate of the mouse button
- * event.
- * @y: Pointer to a gdouble to receive the y coordinate of the mouse button
- * event.
- *
- * Retrieve the details of either a #GstNavigation mouse button press event or
- * a mouse button release event. Determine which type the event is using
- * gst_navigation_event_get_type() to retrieve the #GstNavigationEventType.
- *
- * Since: 0.10.23
- */
-#ifdef __SYMBIAN32__
-EXPORT_C
-#endif
-
-gboolean
-gst_navigation_event_parse_mouse_button_event (GstEvent * event, gint * button,
- gdouble * x, gdouble * y)
-{
- GstNavigationEventType e_type;
- const GstStructure *s;
-
- e_type = gst_navigation_event_get_type (event);
- g_return_val_if_fail (e_type == GST_NAVIGATION_EVENT_MOUSE_BUTTON_PRESS ||
- e_type == GST_NAVIGATION_EVENT_MOUSE_BUTTON_RELEASE, FALSE);
-
- s = gst_event_get_structure (event);
- if (x)
- g_return_val_if_fail (gst_structure_get_double (s, "pointer_x", x), FALSE);
- if (y)
- g_return_val_if_fail (gst_structure_get_double (s, "pointer_y", y), FALSE);
- if (button)
- g_return_val_if_fail (gst_structure_get_int (s, "button", button), FALSE);
-
- return TRUE;
-}
-
-/**
- * gst_navigation_event_parse_mouse_move_event:
- * @event: A #GstEvent to inspect.
- * @x: Pointer to a gdouble to receive the x coordinate of the mouse movement.
- * @y: Pointer to a gdouble to receive the y coordinate of the mouse movement.
- *
- * Inspect a #GstNavigation mouse movement event and extract the coordinates
- * of the event.
- *
- * Since: 0.10.23
- */
-#ifdef __SYMBIAN32__
-EXPORT_C
-#endif
-
-gboolean
-gst_navigation_event_parse_mouse_move_event (GstEvent * event, gdouble * x,
- gdouble * y)
-{
- const GstStructure *s;
-
- g_return_val_if_fail (GST_NAVIGATION_EVENT_HAS_TYPE (event, MOUSE_MOVE),
- FALSE);
-
- s = gst_event_get_structure (event);
- if (x)
- g_return_val_if_fail (gst_structure_get_double (s, "pointer_x", x), FALSE);
- if (y)
- g_return_val_if_fail (gst_structure_get_double (s, "pointer_y", y), FALSE);
-
- return TRUE;
-}
-
-/**
- * gst_navigation_event_parse_command:
- * @event: A #GstEvent to inspect.
- * @command: Pointer to GstNavigationCommand to receive the type of the
- * navigation event.
- *
- * Inspect a #GstNavigation command event and retrieve the enum value of the
- * associated command.
- *
- * Since: 0.10.23
- */
-#ifdef __SYMBIAN32__
-EXPORT_C
-#endif
-
-gboolean
-gst_navigation_event_parse_command (GstEvent * event,
- GstNavigationCommand * command)
-{
- const GstStructure *s;
- g_return_val_if_fail (GST_NAVIGATION_EVENT_HAS_TYPE (event, COMMAND), FALSE);
-
- if (command) {
- s = gst_event_get_structure (event);
- g_return_val_if_fail (gst_structure_get_uint (s, "command-code", (guint*)command),
- FALSE);
- }
-
- return TRUE;
-}