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;
}
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_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
*/
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_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
*/
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
*/
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_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
*/
gboolean
gst_navigation_query_parse_angles (GstQuery * query, guint * cur_angle,
guint * n_angles)
{
GstStructure *structure;
gboolean ret = TRUE;
g_return_val_if_fail (GST_NAVIGATION_QUERY_HAS_TYPE (query, ANGLES), FALSE);
structure = gst_query_get_structure (query);
if (cur_angle)
ret &= gst_structure_get_uint (structure, "angle", cur_angle);
if (n_angles)
ret &= gst_structure_get_uint (structure, "angles", n_angles);
WARN_IF_FAIL (ret, "Couldn't extract details from angles query");
return ret;
}
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;
}
