| /* GStreamer Navigation |
| * Copyright (C) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net> |
| * Copyright (C) 2003 David A. Schleef <ds@schleef.org> |
| * |
| * navigation.h: navigation interface design |
| * |
| * 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., 51 Franklin St, Fifth Floor, |
| * Boston, MA 02110-1301, USA. |
| */ |
| |
| #ifndef __GST_NAVIGATION_H__ |
| #define __GST_NAVIGATION_H__ |
| |
| #include <gst/gst.h> |
| |
| G_BEGIN_DECLS |
| |
| #define GST_TYPE_NAVIGATION \ |
| (gst_navigation_get_type ()) |
| #define GST_NAVIGATION(obj) \ |
| (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_NAVIGATION, GstNavigation)) |
| #define GST_IS_NAVIGATION(obj) \ |
| (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_NAVIGATION)) |
| #define GST_NAVIGATION_GET_INTERFACE(obj) \ |
| (G_TYPE_INSTANCE_GET_INTERFACE ((obj), GST_TYPE_NAVIGATION, GstNavigationInterface)) |
| |
| typedef struct _GstNavigation GstNavigation; |
| typedef struct _GstNavigationInterface GstNavigationInterface; |
| |
| /** |
| * GstNavigationInterface: |
| * @iface: the parent interface |
| * @send_event: sending a navigation event |
| * |
| * Navigation interface. |
| */ |
| struct _GstNavigationInterface { |
| GTypeInterface iface; |
| |
| /* virtual functions */ |
| void (*send_event) (GstNavigation *navigation, GstStructure *structure); |
| }; |
| |
| GType gst_navigation_get_type (void); |
| |
| /* 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 |
| */ |
| 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 */ |
| /** |
| * GstNavigationQueryType: |
| * @GST_NAVIGATION_QUERY_INVALID: invalid query |
| * @GST_NAVIGATION_QUERY_COMMANDS: command query |
| * @GST_NAVIGATION_QUERY_ANGLES: viewing angle query |
| * |
| * Tyoes of navigation interface 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. |
| * @GST_NAVIGATION_MESSAGE_EVENT: Sent when a navigation event was not handled |
| * by any element in the pipeline (Since 1.6) |
| * |
| * A set of notifications that may be received on the bus when navigation |
| * related status changes. |
| */ |
| typedef enum { |
| GST_NAVIGATION_MESSAGE_INVALID, |
| GST_NAVIGATION_MESSAGE_MOUSE_OVER, |
| GST_NAVIGATION_MESSAGE_COMMANDS_CHANGED, |
| GST_NAVIGATION_MESSAGE_ANGLES_CHANGED, |
| GST_NAVIGATION_MESSAGE_EVENT |
| } 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); |
| |
| GstMessage * gst_navigation_message_new_event (GstObject *src, |
| GstEvent *event); |
| gboolean gst_navigation_message_parse_event (GstMessage *message, |
| GstEvent ** event); |
| /* 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. |
| */ |
| 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 |
| |
| #endif /* __GST_NAVIGATION_H__ */ |
