navigation: Extend the navigation interface

Add support for a set of standard commands that can be queried and executed to
support applications like DVD. Add query construction and parsing functions.
Add new messages that can be sent on the bus to provide notifications related
to commands, multiangle changes, and button highlight activity.
Add some helper functions to parse the existing GstNavigation events that
elements might receive.
Document it all and add unit tests.
This commit is contained in:
Jan Schmidt 2009-03-31 00:54:30 +01:00
parent c2a56e3115
commit 033e654172
7 changed files with 1318 additions and 4 deletions

View file

@ -506,16 +506,50 @@ gst_mixer_track_get_type
<INCLUDE>gst/interfaces/navigation.h</INCLUDE>
GstNavigation
GstNavigationInterface
GstNavigationCommand
GstNavigationMessageType
GstNavigationQueryType
gst_navigation_send_event
gst_navigation_send_key_event
gst_navigation_send_mouse_event
gst_navigation_send_command
gst_navigation_message_get_type
gst_navigation_message_new_angles_changed
gst_navigation_message_new_commands_changed
gst_navigation_message_new_mouse_over
gst_navigation_message_parse_mouse_over
gst_navigation_query_new_angles
gst_navigation_query_get_type
gst_navigation_query_new_commands
gst_navigation_query_parse_angles
gst_navigation_query_parse_commands_length
gst_navigation_query_parse_commands_nth
gst_navigation_query_set_angles
gst_navigation_query_set_commands
gst_navigation_query_set_commandsv
GST_NAVIGATION_COMMAND_DVD_ANGLE_MENU
GST_NAVIGATION_COMMAND_DVD_AUDIO_MENU
GST_NAVIGATION_COMMAND_DVD_CHAPTER_MENU
GST_NAVIGATION_COMMAND_DVD_MENU
GST_NAVIGATION_COMMAND_DVD_ROOT_MENU
GST_NAVIGATION_COMMAND_DVD_SUBPICTURE_MENU
GST_NAVIGATION_COMMAND_DVD_TITLE_MENU
<SUBSECTION Standard>
GST_TYPE_NAVIGATION
GST_NAVIGATION
GST_NAVIGATION_GET_IFACE
GST_TYPE_NAVIGATION_COMMAND
GST_TYPE_NAVIGATION_MESSAGE_TYPE
GST_TYPE_NAVIGATION_QUERY_TYPE
GST_IS_NAVIGATION
gst_navigation_get_type
gst_navigation_message_type_get_type
gst_navigation_query_type_get_type
gst_navigation_command_get_type
</SECTION>
<SECTION>

View file

@ -24,9 +24,14 @@
#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"
GType
gst_navigation_get_type (void)
{
@ -71,21 +76,714 @@ gst_navigation_send_event (GstNavigation * navigation, GstStructure * 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.
*/
void
gst_navigation_send_key_event (GstNavigation * navigation, const char *event,
const char *key)
{
gst_navigation_send_event (navigation,
gst_structure_new ("application/x-gst-navigation", "event", G_TYPE_STRING,
gst_structure_new (GST_NAVIGATION_EVENT_NAME, "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.
*
*/
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 ("application/x-gst-navigation", "event", G_TYPE_STRING,
gst_structure_new (GST_NAVIGATION_EVENT_NAME, "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
*/
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
*/
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
*/
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
*/
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
*/
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_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
*/
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
*/
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
*/
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
*/
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
*/
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
*/
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
*/
gboolean
gst_navigation_message_parse_mouse_over (GstMessage * message,
gboolean * active)
{
g_return_val_if_fail (GST_NAVIGATION_MESSAGE_HAS_TYPE (message, MOUSE_OVER),
FALSE);
if (active) {
const GstStructure *s = gst_message_get_structure (message);
g_return_val_if_fail (gst_structure_get_boolean (s, "active", active),
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
*/
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
*/
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
*/
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
*/
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
*/
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
*/
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
*/
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
*/
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", command),
FALSE);
}
return TRUE;
}

View file

@ -49,13 +49,207 @@ typedef struct _GstNavigationInterface {
GType gst_navigation_get_type (void);
/* virtual class function wrappers */
void gst_navigation_send_event (GstNavigation *navigation, GstStructure *structure);
/* Navigation commands */
/**
* GstNavigationCommand:
* @GST_NAVIGATION_COMMAND_INVALID: An invalid command entry
* @GST_NAVIGATION_COMMAND_MENU1: Execute navigation menu command 1. For DVD,
* this enters the DVD root menu, or exits back to the title from the menu.
* @GST_NAVIGATION_COMMAND_MENU2: Execute navigation menu command 2. For DVD,
* this jumps to the DVD title menu.
* @GST_NAVIGATION_COMMAND_MENU3: Execute navigation menu command 3. For DVD,
* this jumps into the DVD root menu.
* @GST_NAVIGATION_COMMAND_MENU4: Execute navigation menu command 4. For DVD,
* this jumps to the Subpicture menu.
* @GST_NAVIGATION_COMMAND_MENU5: Execute navigation menu command 5. For DVD,
* the jumps to the audio menu.
* @GST_NAVIGATION_COMMAND_MENU6: Execute navigation menu command 6. For DVD,
* this jumps to the angles menu.
* @GST_NAVIGATION_COMMAND_MENU7: Execute navigation menu command 7. For DVD,
* this jumps to the chapter menu.
* @GST_NAVIGATION_COMMAND_LEFT: Select the next button to the left in a menu,
* if such a button exists.
* @GST_NAVIGATION_COMMAND_RIGHT: Select the next button to the right in a menu,
* if such a button exists.
* @GST_NAVIGATION_COMMAND_UP: Select the button above the current one in a
* menu, if such a button exists.
* @GST_NAVIGATION_COMMAND_DOWN: Select the button below the current one in a
* menu, if such a button exists.
* @GST_NAVIGATION_COMMAND_ACTIVATE: Activate (click) the currently selected
* button in a menu, if such a button exists.
* @GST_NAVIGATION_COMMAND_PREV_ANGLE: Switch to the previous angle in a
* multiangle feature.
* @GST_NAVIGATION_COMMAND_NEXT_ANGLE: Switch to the next angle in a multiangle
* feature.
*
* A set of commands that may be issued to an element providing the
* #GstNavigation interface. The available commands can be queried via
* the gst_navigation_query_new_commands() query.
*
* For convenience in handling DVD navigation, the MENU commands are aliased as:
* GST_NAVIGATION_COMMAND_DVD_MENU = @GST_NAVIGATION_COMMAND_MENU1
* GST_NAVIGATION_COMMAND_DVD_TITLE_MENU = @GST_NAVIGATION_COMMAND_MENU2
* GST_NAVIGATION_COMMAND_DVD_ROOT_MENU = @GST_NAVIGATION_COMMAND_MENU3
* GST_NAVIGATION_COMMAND_DVD_SUBPICTURE_MENU = @GST_NAVIGATION_COMMAND_MENU4
* GST_NAVIGATION_COMMAND_DVD_AUDIO_MENU = @GST_NAVIGATION_COMMAND_MENU5
* GST_NAVIGATION_COMMAND_DVD_ANGLE_MENU = @GST_NAVIGATION_COMMAND_MENU6
* GST_NAVIGATION_COMMAND_DVD_CHAPTER_MENU = @GST_NAVIGATION_COMMAND_MENU7
*
* Since: 0.10.23
*/
typedef enum {
GST_NAVIGATION_COMMAND_INVALID = 0,
GST_NAVIGATION_COMMAND_MENU1 = 1,
GST_NAVIGATION_COMMAND_MENU2 = 2,
GST_NAVIGATION_COMMAND_MENU3 = 3,
GST_NAVIGATION_COMMAND_MENU4 = 4,
GST_NAVIGATION_COMMAND_MENU5 = 5,
GST_NAVIGATION_COMMAND_MENU6 = 6,
GST_NAVIGATION_COMMAND_MENU7 = 7,
GST_NAVIGATION_COMMAND_LEFT = 20,
GST_NAVIGATION_COMMAND_RIGHT = 21,
GST_NAVIGATION_COMMAND_UP = 22,
GST_NAVIGATION_COMMAND_DOWN = 23,
GST_NAVIGATION_COMMAND_ACTIVATE = 24,
GST_NAVIGATION_COMMAND_PREV_ANGLE = 30,
GST_NAVIGATION_COMMAND_NEXT_ANGLE = 31
} GstNavigationCommand;
/* Some aliases for the menu command types */
#define GST_NAVIGATION_COMMAND_DVD_MENU GST_NAVIGATION_COMMAND_MENU1
#define GST_NAVIGATION_COMMAND_DVD_TITLE_MENU GST_NAVIGATION_COMMAND_MENU2
#define GST_NAVIGATION_COMMAND_DVD_ROOT_MENU GST_NAVIGATION_COMMAND_MENU3
#define GST_NAVIGATION_COMMAND_DVD_SUBPICTURE_MENU GST_NAVIGATION_COMMAND_MENU4
#define GST_NAVIGATION_COMMAND_DVD_AUDIO_MENU GST_NAVIGATION_COMMAND_MENU5
#define GST_NAVIGATION_COMMAND_DVD_ANGLE_MENU GST_NAVIGATION_COMMAND_MENU6
#define GST_NAVIGATION_COMMAND_DVD_CHAPTER_MENU GST_NAVIGATION_COMMAND_MENU7
/* Queries */
typedef enum
{
GST_NAVIGATION_QUERY_INVALID = 0,
GST_NAVIGATION_QUERY_COMMANDS = 1,
GST_NAVIGATION_QUERY_ANGLES = 2
} GstNavigationQueryType;
GstNavigationQueryType gst_navigation_query_get_type (GstQuery *query);
GstQuery *gst_navigation_query_new_commands (void);
void gst_navigation_query_set_commands (GstQuery *query, gint n_cmds, ...);
void gst_navigation_query_set_commandsv (GstQuery *query, gint n_cmds,
GstNavigationCommand *cmds);
gboolean gst_navigation_query_parse_commands_length (GstQuery *query,
guint *n_cmds);
gboolean gst_navigation_query_parse_commands_nth (GstQuery *query, guint nth,
GstNavigationCommand *cmd);
GstQuery *gst_navigation_query_new_angles (void);
void gst_navigation_query_set_angles (GstQuery *query, guint cur_angle,
guint n_angles);
gboolean gst_navigation_query_parse_angles (GstQuery *query, guint *cur_angle,
guint *n_angles);
/* Element messages */
/**
* GstNavigationMessageType:
* @GST_NAVIGATION_MESSAGE_INVALID: Returned from
* gst_navigation_message_get_type() when the passed message is not a
* navigation message.
* @GST_NAVIGATION_MESSAGE_MOUSE_OVER: Sent when the mouse moves over or leaves a
* clickable region of the output, such as a DVD menu button.
* @GST_NAVIGATION_MESSAGE_COMMANDS_CHANGED: Sent when the set of available commands
* changes and should re-queried by interested applications.
* @GST_NAVIGATION_MESSAGE_ANGLES_CHANGED: Sent when display angles in a multi-angle
* feature (such as a multiangle DVD) change - either angles have appeared or
* disappeared.
*
* A set of notifications that may be received on the bus when navigation
* related status changes.
*
* Since: 0.10.23
*/
typedef enum {
GST_NAVIGATION_MESSAGE_INVALID,
GST_NAVIGATION_MESSAGE_MOUSE_OVER,
GST_NAVIGATION_MESSAGE_COMMANDS_CHANGED,
GST_NAVIGATION_MESSAGE_ANGLES_CHANGED
} GstNavigationMessageType;
GstNavigationMessageType gst_navigation_message_get_type (GstMessage *message);
GstMessage *gst_navigation_message_new_mouse_over (GstObject *src,
gboolean active);
gboolean gst_navigation_message_parse_mouse_over (GstMessage *message,
gboolean *active);
GstMessage *gst_navigation_message_new_commands_changed (GstObject *src);
GstMessage *gst_navigation_message_new_angles_changed (GstObject *src,
guint cur_angle,
guint n_angles);
gboolean gst_navigation_message_parse_angles_changed (GstMessage *message,
guint *cur_angle,
guint *n_angles);
/* event parsing functions */
/**
* GstNavigationEventType:
* @GST_NAVIGATION_EVENT_INVALID: Returned from
* gst_navigation_event_get_type() when the passed event is not a navigation event.
* @GST_NAVIGATION_EVENT_KEY_PRESS: A key press event. Use
* gst_navigation_event_parse_key_event() to extract the details from the event.
* @GST_NAVIGATION_EVENT_KEY_RELEASE: A key release event. Use
* gst_navigation_event_parse_key_event() to extract the details from the event.
* @GST_NAVIGATION_EVENT_MOUSE_BUTTON_PRESS: A mouse button press event. Use
* gst_navigation_event_parse_mouse_button_event() to extract the details from the
* event.
* @GST_NAVIGATION_EVENT_MOUSE_BUTTON_RELEASE: A mouse button release event. Use
* gst_navigation_event_parse_mouse_button_event() to extract the details from the
* event.
* @GST_NAVIGATION_EVENT_MOUSE_MOVE: A mouse movement event. Use
* gst_navigation_event_parse_mouse_move_event() to extract the details from the
* event.
* @GST_NAVIGATION_EVENT_COMMAND: A navigation command event. Use
* gst_navigation_event_parse_command() to extract the details from the event.
*
* Enum values for the various events that an element implementing the
* GstNavigation interface might send up the pipeline.
*
* Since: 0.10.23
*/
typedef enum {
GST_NAVIGATION_EVENT_INVALID = 0,
GST_NAVIGATION_EVENT_KEY_PRESS = 1,
GST_NAVIGATION_EVENT_KEY_RELEASE = 2,
GST_NAVIGATION_EVENT_MOUSE_BUTTON_PRESS = 3,
GST_NAVIGATION_EVENT_MOUSE_BUTTON_RELEASE = 4,
GST_NAVIGATION_EVENT_MOUSE_MOVE = 5,
GST_NAVIGATION_EVENT_COMMAND = 6
} GstNavigationEventType;
GstNavigationEventType gst_navigation_event_get_type (GstEvent *event);
gboolean gst_navigation_event_parse_key_event (GstEvent *event,
const gchar **key);
gboolean gst_navigation_event_parse_mouse_button_event (GstEvent *event,
gint *button, gdouble *x, gdouble *y);
gboolean gst_navigation_event_parse_mouse_move_event (GstEvent *event,
gdouble *x, gdouble *y);
gboolean gst_navigation_event_parse_command (GstEvent *event,
GstNavigationCommand *command);
/* interface virtual function wrappers */
void gst_navigation_send_event (GstNavigation *navigation,
GstStructure *structure);
void gst_navigation_send_key_event (GstNavigation *navigation,
const char *event, const char *key);
void gst_navigation_send_mouse_event (GstNavigation *navigation,
const char *event, int button, double x, double y);
void gst_navigation_send_command (GstNavigation *navigation,
GstNavigationCommand command);
G_END_DECLS

View file

@ -112,6 +112,7 @@ check_PROGRAMS = \
libs/cddabasesrc \
libs/fft \
libs/mixer \
libs/navigation \
libs/netbuffer \
libs/pbutils \
libs/rtp \
@ -181,6 +182,16 @@ libs_mixer_LDADD = \
$(GST_BASE_LIBS) \
$(LDADD)
libs_navigation_CFLAGS = \
$(GST_PLUGINS_BASE_CFLAGS) \
$(GST_BASE_CFLAGS) \
$(AM_CFLAGS)
libs_navigation_LDADD = \
$(top_builddir)/gst-libs/gst/interfaces/libgstinterfaces-@GST_MAJORMINOR@.la \
$(GST_BASE_LIBS) \
$(LDADD)
libs_netbuffer_CFLAGS = \
$(GST_PLUGINS_BASE_CFLAGS) \
$(AM_CFLAGS)

View file

@ -3,6 +3,7 @@ audio
cddabasesrc
fft
mixer
navigation
netbuffer
pbutils
rtp

View file

@ -0,0 +1,351 @@
/* GStreamer
*
* unit tests for the navigation interface library
*
* Copyright (C) 2009 Jan Schmidt <thaytan@noraisin.net>
*
* 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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gst/check/gstcheck.h>
#include <gst/interfaces/navigation.h>
#include <string.h>
#define TEST_ELEMENT_TYPE (test_element_get_type())
typedef struct TestElement TestElement;
typedef struct TestElementClass TestElementClass;
struct TestElement
{
GstElement parent;
GstNavigationEventType sent_type;
const gchar *sent_key;
gdouble sent_x, sent_y;
gint sent_button;
GstNavigationCommand sent_command;
};
struct TestElementClass
{
GstElementClass parent_class;
};
static void init_interface (GType type);
static void gst_implements_interface_init (GstImplementsInterfaceClass * klass);
static void nav_send_event (GstNavigation * navigation,
GstStructure * structure);
GST_BOILERPLATE_FULL (TestElement, test_element, GstElement, GST_TYPE_ELEMENT,
init_interface);
static void
test_element_navigation_interface_init (GstNavigationInterface * klass)
{
klass->send_event = nav_send_event;
}
static void
init_interface (GType type)
{
static const GInterfaceInfo navigation_iface_info = {
(GInterfaceInitFunc) test_element_navigation_interface_init,
NULL,
NULL,
};
static const GInterfaceInfo implements_iface_info = {
(GInterfaceInitFunc) gst_implements_interface_init,
NULL,
NULL,
};
g_type_add_interface_static (type, GST_TYPE_IMPLEMENTS_INTERFACE,
&implements_iface_info);
g_type_add_interface_static (type, GST_TYPE_NAVIGATION,
&navigation_iface_info);
}
static void
test_element_base_init (gpointer klass)
{
}
static void
test_element_class_init (TestElementClass * klass)
{
}
static gboolean
test_element_interface_supported (GstImplementsInterface * ifacE,
GType interface_type)
{
if (interface_type == GST_TYPE_NAVIGATION)
return TRUE;
return FALSE;
}
static void
gst_implements_interface_init (GstImplementsInterfaceClass * klass)
{
klass->supported = test_element_interface_supported;
}
static void
test_element_init (TestElement * this, TestElementClass * klass)
{
}
static void
nav_send_event (GstNavigation * navigation, GstStructure * structure)
{
GstEvent *event = gst_event_new_navigation (structure);
GstNavigationEventType etype = gst_navigation_event_get_type (event);
TestElement *self = (TestElement *) (navigation);
fail_if (etype == GST_NAVIGATION_EVENT_INVALID,
"Received navigation event could not be parsed");
fail_unless (etype == self->sent_type,
"Received navigation event did not match sent");
switch (etype) {
case GST_NAVIGATION_EVENT_KEY_PRESS:
case GST_NAVIGATION_EVENT_KEY_RELEASE:{
const gchar *key;
fail_unless (gst_navigation_event_parse_key_event (event, &key));
fail_unless (strcmp (key, self->sent_key) == 0);
break;
}
case GST_NAVIGATION_EVENT_MOUSE_BUTTON_PRESS:
case GST_NAVIGATION_EVENT_MOUSE_BUTTON_RELEASE:{
gint button;
gdouble x, y;
fail_unless (gst_navigation_event_parse_mouse_button_event (event,
&button, &x, &y));
fail_unless (button == self->sent_button);
fail_unless (x == self->sent_x);
fail_unless (y == self->sent_y);
break;
}
case GST_NAVIGATION_EVENT_MOUSE_MOVE:{
gdouble x, y;
fail_unless (gst_navigation_event_parse_mouse_move_event (event, &x, &y));
fail_unless (x == self->sent_x);
fail_unless (y == self->sent_y);
break;
}
case GST_NAVIGATION_EVENT_COMMAND:{
GstNavigationCommand cmd;
fail_unless (gst_navigation_event_parse_command (event, &cmd));
fail_unless (cmd == self->sent_command);
}
default:
break;
}
gst_event_unref (event);
}
GST_START_TEST (test_events)
{
/* Create an empty GstElement that has a GstNavigation interface and then
* send some navigation events and validate them */
TestElement *test_element =
(TestElement *) g_object_new (TEST_ELEMENT_TYPE, NULL);
GstNavigationCommand cmds[] = {
GST_NAVIGATION_COMMAND_MENU1, GST_NAVIGATION_COMMAND_MENU2,
GST_NAVIGATION_COMMAND_MENU3, GST_NAVIGATION_COMMAND_MENU4,
GST_NAVIGATION_COMMAND_MENU5, GST_NAVIGATION_COMMAND_MENU6,
GST_NAVIGATION_COMMAND_MENU7, GST_NAVIGATION_COMMAND_LEFT,
GST_NAVIGATION_COMMAND_RIGHT, GST_NAVIGATION_COMMAND_UP,
GST_NAVIGATION_COMMAND_DOWN, GST_NAVIGATION_COMMAND_ACTIVATE,
GST_NAVIGATION_COMMAND_PREV_ANGLE, GST_NAVIGATION_COMMAND_NEXT_ANGLE
};
gint i;
test_element->sent_type = GST_NAVIGATION_EVENT_KEY_PRESS;
test_element->sent_key = "1";
gst_navigation_send_key_event (GST_NAVIGATION (test_element), "key-press",
"1");
test_element->sent_type = GST_NAVIGATION_EVENT_KEY_RELEASE;
test_element->sent_key = "2";
gst_navigation_send_key_event (GST_NAVIGATION (test_element), "key-release",
"2");
test_element->sent_type = GST_NAVIGATION_EVENT_MOUSE_MOVE;
test_element->sent_x = 50;
test_element->sent_y = 100;
gst_navigation_send_mouse_event (GST_NAVIGATION (test_element), "mouse-move",
0, 50, 100);
test_element->sent_type = GST_NAVIGATION_EVENT_MOUSE_BUTTON_PRESS;
test_element->sent_x = 10;
test_element->sent_y = 20;
test_element->sent_button = 1;
gst_navigation_send_mouse_event (GST_NAVIGATION (test_element),
"mouse-button-press", 1, 10, 20);
for (i = 0; i < G_N_ELEMENTS (cmds); i++) {
test_element->sent_type = GST_NAVIGATION_EVENT_COMMAND;
test_element->sent_command = cmds[i];
gst_navigation_send_command (GST_NAVIGATION (test_element), cmds[i]);
}
gst_object_unref (test_element);
}
GST_END_TEST;
GST_START_TEST (test_messages)
{
GstMessage *m;
/* GST_NAVIGATION_MESSAGE_MOUSE_OVER */
{
gboolean active;
m = gst_navigation_message_new_mouse_over (NULL, TRUE);
fail_if (m == NULL);
fail_unless (gst_navigation_message_get_type (m) ==
GST_NAVIGATION_MESSAGE_MOUSE_OVER);
fail_unless (GST_MESSAGE_SRC (m) == NULL);
fail_unless (gst_navigation_message_parse_mouse_over (m, &active));
fail_unless (active == TRUE);
gst_message_unref (m);
m = gst_navigation_message_new_mouse_over (NULL, FALSE);
fail_if (m == NULL);
fail_unless (GST_MESSAGE_SRC (m) == NULL);
fail_unless (gst_navigation_message_get_type (m) ==
GST_NAVIGATION_MESSAGE_MOUSE_OVER);
fail_unless (gst_navigation_message_parse_mouse_over (m, &active));
fail_unless (active == FALSE);
gst_message_unref (m);
}
/* GST_NAVIGATION_MESSAGE_COMMANDS_CHANGED */
{
m = gst_navigation_message_new_commands_changed (NULL);
fail_if (m == NULL);
fail_unless (GST_MESSAGE_SRC (m) == NULL);
fail_unless (gst_navigation_message_get_type (m) ==
GST_NAVIGATION_MESSAGE_COMMANDS_CHANGED);
gst_message_unref (m);
}
/* GST_NAVIGATION_MESSAGE_ANGLES_CHANGED */
{
guint angle, angles;
m = gst_navigation_message_new_angles_changed (NULL, 1, 5);
fail_if (m == NULL);
fail_unless (GST_MESSAGE_SRC (m) == NULL);
fail_unless (gst_navigation_message_get_type (m) ==
GST_NAVIGATION_MESSAGE_ANGLES_CHANGED);
fail_unless (gst_navigation_message_parse_angles_changed (m, &angle,
&angles));
fail_unless (angle == 1);
fail_unless (angles == 5);
gst_message_unref (m);
}
}
GST_END_TEST;
GST_START_TEST (test_queries)
{
GstQuery *q;
/* GST_NAVIGATION_QUERY_COMMANDS */
{
guint n;
GstNavigationCommand cmd;
q = gst_navigation_query_new_commands ();
fail_unless (q != NULL);
fail_unless (gst_navigation_query_get_type (q) ==
GST_NAVIGATION_QUERY_COMMANDS);
gst_navigation_query_set_commands (q, 3, GST_NAVIGATION_COMMAND_LEFT,
GST_NAVIGATION_COMMAND_MENU1, GST_NAVIGATION_COMMAND_MENU5);
fail_unless (gst_navigation_query_parse_commands_length (q, &n));
fail_unless (n == 3);
fail_unless (gst_navigation_query_parse_commands_nth (q, 1, &cmd));
fail_unless (cmd == GST_NAVIGATION_COMMAND_MENU1);
fail_unless (gst_navigation_query_parse_commands_length (q, NULL));
fail_unless (gst_navigation_query_parse_commands_nth (q, 2, NULL));
gst_query_unref (q);
}
/* GST_NAVIGATION_QUERY_ANGLES */
{
guint angle, angles;
q = gst_navigation_query_new_angles ();
fail_unless (q != NULL);
fail_unless (gst_navigation_query_get_type (q) ==
GST_NAVIGATION_QUERY_ANGLES);
gst_navigation_query_set_angles (q, 4, 8);
fail_unless (gst_navigation_query_parse_angles (q, &angle, &angles));
fail_unless (angle == 4);
fail_unless (angles == 8);
fail_unless (gst_navigation_query_parse_angles (q, NULL, &angles));
fail_unless (gst_navigation_query_parse_angles (q, &angle, NULL));
fail_unless (gst_navigation_query_parse_angles (q, NULL, NULL));
gst_query_unref (q);
}
}
GST_END_TEST;
static Suite *
navigation_suite (void)
{
Suite *s = suite_create ("navigation interface");
TCase *tc_chain = tcase_create ("notifications");
suite_add_tcase (s, tc_chain);
tcase_add_test (tc_chain, test_events);
tcase_add_test (tc_chain, test_messages);
tcase_add_test (tc_chain, test_queries);
return s;
}
int
main (int argc, char **argv)
{
int nf;
Suite *s = navigation_suite ();
SRunner *sr = srunner_create (s);
gst_check_init (&argc, &argv);
srunner_run_all (sr, CK_NORMAL);
nf = srunner_ntests_failed (sr);
srunner_free (sr);
return nf;
}

View file

@ -34,7 +34,32 @@ EXPORTS
gst_mixer_track_get_type
gst_mixer_type_get_type
gst_mixer_volume_changed
gst_navigation_command_get_type
gst_navigation_event_get_type
gst_navigation_event_parse_command
gst_navigation_event_parse_key_event
gst_navigation_event_parse_mouse_button_event
gst_navigation_event_parse_mouse_move_event
gst_navigation_event_type_get_type
gst_navigation_get_type
gst_navigation_message_get_type
gst_navigation_message_new_angles_changed
gst_navigation_message_new_commands_changed
gst_navigation_message_new_mouse_over
gst_navigation_message_parse_angles_changed
gst_navigation_message_parse_mouse_over
gst_navigation_message_type_get_type
gst_navigation_query_get_type
gst_navigation_query_new_angles
gst_navigation_query_new_commands
gst_navigation_query_parse_angles
gst_navigation_query_parse_commands_length
gst_navigation_query_parse_commands_nth
gst_navigation_query_set_angles
gst_navigation_query_set_commands
gst_navigation_query_set_commandsv
gst_navigation_query_type_get_type
gst_navigation_send_command
gst_navigation_send_event
gst_navigation_send_key_event
gst_navigation_send_mouse_event