David Robillard
ca28b2460a
git-svn-id: svn://localhost/ardour2/branches/3.0@4699 d708f5d6-7413-0410-9779-e7cbd77b26cf
704 lines
21 KiB
C++
704 lines
21 KiB
C++
/*
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Copyright (C) 2003 Paul Davis
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#ifndef __ardour_gtk_imageframe_socket_handler_h__
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#define __ardour_gtk_imageframe_socket_handler_h__
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#include <string>
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#include <list>
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#include "ardour_image_compositor_socket.h"
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class TimeAxisViewItem ;
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class ImageFrameView ;
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class MarkerView ;
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class ImageFrameTimeAxisGroup ;
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class Editor ;
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/**
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* ImageFrameSocketHandler defines the handler between Ardour and an Image Compositor
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* As this is purely visual, we do all processing within the main gtk loop via
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* message passing through a socket.
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*
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*/
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class ImageFrameSocketHandler : public sigc::trackable
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{
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public:
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/**
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* Constructs a new ImageFrameSocketHandler to handle communication between Ardour and the Image Compositor
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*
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* @param ed the PublicEditor
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*/
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ImageFrameSocketHandler(PublicEditor& ed) ;
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/**
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* Descructor
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* this will shutdown the socket if open
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*/
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virtual ~ImageFrameSocketHandler() ;
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/**
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* Returns the instance of the ImageFrameSocketHandler
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* the instance should first be created with createInstance
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*
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* @return the instance of the ImageFrameSocketHandler
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*/
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static ImageFrameSocketHandler* get_instance() ;
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/**
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* call back to handle doing the processing work
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* This method is added to the gdk main loop and called when there is data
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* upon the socket.
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*
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*/
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static void image_socket_callback(void *arg, int32_t fd, GdkInputCondition cond) ;
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/**
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* Attempt to connect to the image compositor on the specified host and port
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*
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* @param hostIp the ip address of the image compositor host
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* @param port the oprt number to attemp the connection on
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* @return true if the connection was a succees
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* false otherwise
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*/
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bool connect(const char * hostIp, int32_t port) ;
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/**
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* Closes the connection to th Image Compositor
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*
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*/
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void close_connection() ;
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/**
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* Returns true if this ImagFrameSocketHandler is currently connected to rthe image compositor
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*
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* @return true if connected to the image compositor
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*/
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bool is_connected() ;
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/**
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* Sets the tag used to describe this input within gtk
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* this is returned when gdk_input_add is called and is required to remove the input
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*
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* @param tag the gdk input tag of this input
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*/
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void set_gdk_input_tag(int tag) ;
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/**
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* Returns the gdk input tag of this input
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*
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* @return the gdk input tag of this input
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* @see setGdkInputTag
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*/
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int get_gdk_input_tag() ;
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/**
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* Returns the socket file descriptor
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*
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* @return the Sockt file descriptor
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*/
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int get_socket_descriptor() ;
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//---------------------------------------------------------------------------------------//
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// Handle Sending messages to the Image Compositor
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//----------------------------
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// ImageFrameTimeAxis Messages
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/**
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* Sends a message stating that the named image frame time axis has been removed
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*
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* @param track_id the unique id of the removed image frame time axis
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* @param src the identity of the object that initiated the change
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*/
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void send_imageframe_time_axis_removed(const string & track_id, void* src) ;
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/**
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* Sends a message indicating that an ImageFrameTimeAxis has been renamed
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*
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* @param new_id the new name, or Id, of the track
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* @param old_id the old name, or Id, of the track
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* @param src the identity of the object that initiated the change
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* @param time_axis the time axis that has changed
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*/
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void send_imageframe_time_axis_renamed(const string & new_id, const string & old_id, void* src, ImageFrameTimeAxis* time_axis) ;
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//------------------------
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// MarkerTimeAxis Messages
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/**
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* Sends a message stating that the named marker time axis has been removed
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*
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* @param track_id the unique id of the removed image frame time axis
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* @param src the identity of the object that initiated the change
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*/
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void send_marker_time_axis_removed(const string & track_id, void* src) ;
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/**
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* Sends a message indicating that an MarkerTimeAxis has been renamed
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*
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* @param new_id the new name, or Id, of the track
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* @param old_id the old name, or Id, of the track
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* @param src the identity of the object that initiated the change
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* @param time_axis the time axis that has changed
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*/
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void send_marker_time_axis_renamed(const string & new_id, const string & old_id, void* src, MarkerTimeAxis* time_axis) ;
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//---------------------------------
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// ImageFrameTimeAxisGroup Messages
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/**
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* Sends a message stating that the group has been removed
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*
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* @param group_id the unique id of the removed image frame time axis
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* @param src the identity of the object that initiated the change
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* @param group the group that has changed
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*/
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void send_imageframe_time_axis_group_removed(const string & group_id, void* src, ImageFrameTimeAxisGroup* group) ;
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/**
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* Send a message indicating that an ImageFrameTimeAxisGroup has been renamed
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*
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* @param new_id the new name, or Id, of the group
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* @param old_id the old name, or Id, of the group
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* @param src the identity of the object that initiated the change
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* @param group the group that has changed
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*/
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void send_imageframe_time_axis_group_renamed(const string & new_id, const string & old_id, void* src, ImageFrameTimeAxisGroup* group) ;
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//---------------------------------
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// ImageFrameView Messages
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/**
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* Send an Image Frame View Item position changed message
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*
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* @param pos the new position value
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* @param src the identity of the object that initiated the change
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* @param item the time axis item whos position has changed
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*/
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void send_imageframe_view_position_change(nframes_t pos, void* src, ImageFrameView* item) ;
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/**
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* Send a Image Frame View item duration changed message
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*
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* @param dur the the new duration value
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* @param src the identity of the object that initiated the change
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* @param item the item which has had a duration change
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*/
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void send_imageframe_view_duration_change(nframes_t dur, void* src, ImageFrameView* item) ;
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/**
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* Send a message indicating that an ImageFrameView has been renamed
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*
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* @param item the ImageFrameView which has been renamed
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* @param src the identity of the object that initiated the change
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* @param item the renamed item
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*/
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void send_imageframe_view_renamed(const string & new_id, const string & old_id, void* src, ImageFrameView* item) ;
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/**
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* Send a message indicating that an ImageFrameView item has been removed message
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*
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* @param item_id the id of the item that was removed
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* @param src the identity of the object that initiated the change
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* @param item the removed item
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*/
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void send_imageframe_view_removed(const string & item_id, void* src, ImageFrameView* item) ;
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//---------------------------------
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// MarkerView Messages
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/**
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* Send a Marker View Item position changed message
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*
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* @param pos the new position value
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* @param src the identity of the object that initiated the change
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* @param item the time axis item whos position has changed
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*/
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void send_marker_view_position_change(nframes_t pos, void* src, MarkerView* item) ;
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/**
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* Send a Marker View item duration changed message
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*
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* @param dur the new duration value
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* @param src the identity of the object that initiated the change
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* @param item the time axis item whos position has changed
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*/
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void send_marker_view_duration_change(nframes_t dur, void* src, MarkerView* item) ;
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/**
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* Send a message indicating that a MarkerView has been renamed
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*
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* @param new_id the new_id of the object
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* @param old_id the old_id of the object
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* @param src the identity of the object that initiated the change
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* @param item the MarkerView which has been renamed
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*/
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void send_marker_view_renamed(const string & new_id, const string & old_id, void* src, MarkerView* item) ;
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/**
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* Send a message indicating that a MarkerView item has been removed message
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*
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* @param item_id the id of the item that was removed
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* @param src the identity of the object that initiated the change
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* @param item the MarkerView which has been removed
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*/
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void send_marker_view_removed(const string & item_id, void* src, MarkerView* item) ;
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//---------------------------------------------------------------------------------------//
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// Emitted Signals
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/** Emitted if the socket connection is shutdown at the other end */
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sigc::signal<void> CompositorSocketShutdown ;
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/** Emitted as a generic error is captured from the socket connection to the animatic compositor */
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sigc::signal<void> CompositorSocketError ;
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protected:
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private:
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/* I dont like friends :-( */
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friend class Editor;
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/**
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* Create an new instance of the ImageFrameSocketHandler, if one does not already exist
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*
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* @param ed the Ardour PublicEditor
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*/
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static ImageFrameSocketHandler* create_instance(PublicEditor& ed) ;
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//---------------------------------------------------------------------------------------//
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// Message breakdown ie avoid a big if...then...else
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/**
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* Handle insert item requests
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*
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* @param msg the received message
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*/
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void handle_insert_message(const char* msg) ;
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/**
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* Handle remove item requests
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*
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* @param msg the received message
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*/
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void handle_remove_message(const char* msg) ;
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/**
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* Handle rename item requests
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*
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* @param msg the received message
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*/
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void handle_rename_message(const char* msg) ;
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/**
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* Handle a request for session information
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*
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* @param msg the received message
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*/
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void handle_request_data(const char* msg) ;
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/**
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* Handle the update of a particular item
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*
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* @param msg the received message
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*/
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void handle_item_update_message(const char* msg) ;
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/**
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* Handle the selection of an Item
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*
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* @param msg the received message
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*/
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void handle_item_selected(const char* msg) ;
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/**
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* Handle s session action message
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*
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* @param msg the received message
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*/
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void handle_session_action(const char* msg) ;
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//---------------------------------------------------------------------------------------//
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// handlers for specific insert procedures
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/**
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* Handle the insertion of a new ImaegFrameTimeAxis
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*
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* @param msg the received message
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*/
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void handle_insert_imageframe_time_axis(const char* msg) ;
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/**
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* Handle the insertion of a new MarkerTimeAxis
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*
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* @param msg the received message
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*/
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void handle_insert_marker_time_axis(const char* msg) ;
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/**
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* Handle the insertion of a time axis group (a scene)
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*
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* @param msg the received message
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*/
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void handle_insert_imageframe_group(const char* msg) ;
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/**
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* Handle the insertion of a new ImageFrameItem
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*
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* @param msg the received message
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*/
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void handle_insert_imageframe_view(const char* msg) ;
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/**
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* Handle the insertion of a new MarkerItem
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*
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* @param msg the received message
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*/
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void handle_insert_marker_view(const char* msg) ;
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//---------------------------------------------------------------------------------------//
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// handlers for specific removal procedures
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/**
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* Handle the removal of an ImageTimeAxis
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*
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* @param msg the received message
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*/
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void handle_remove_imageframe_time_axis(const char* msg) ;
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/**
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* Handle the removal of an MarkerTimeAxis
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*
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* @param msg the received message
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*/
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void handle_remove_marker_time_axis(const char* msg) ;
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/**
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* Handle the removal of an ImageFrameTimeAxisGroup
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*
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* @param msg the received message
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*/
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void handle_remove_imageframe_time_axis_group(const char* msg) ;
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/**
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* Handle the removal of an ImageFrameItem
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*
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* @param msg the received message
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*/
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void handle_remove_imageframe_view(const char* msg) ;
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/**
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* Handle the removal of an MarkerItem
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*
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* @param msg the received message
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*/
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void handle_remove_marker_view(const char* msg) ;
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//---------------------------------------------------------------------------------------//
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// handlers for the specific rename procedures
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/**
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* Handle the renaming of an ImageTimeAxis
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*
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* @param msg the received message
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*/
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void handle_rename_imageframe_time_axis(const char* msg) ;
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/**
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* Handle the renaming of an MarkerTimeAxis
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*
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* @param msg the received message
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*/
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void handle_rename_marker_time_axis(const char* msg) ;
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/**
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* Handle the renaming of an ImageFrameItem
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*
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* @param msg the received message
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*/
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void handle_rename_imageframe_time_axis_group(const char* msg) ;
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/**
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* Handle the renaming of an ImageFrameItem
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*
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* @param msg the received message
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*/
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void handle_rename_imageframe_view(const char* msg) ;
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/**
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* Handle the renaming of an Marker
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*
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* @param msg the received message
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*/
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void handle_rename_marker_view(const char* msg) ;
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//---------------------------------------------------------------------------------------//
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// handlers for data request
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/**
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* Handle a request for the sessnio naem fo the current session
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* We return a failure state if no session is open
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*
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* @param msg the received message
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*/
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void handle_session_name_request(const char* msg) ;
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//---------------------------------------------------------------------------------------//
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// handlers for specific item update changes
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/**
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* Handle ImageFrameView positional changes
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*
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* @param msg the received message
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*/
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void handle_imageframe_view_position_update(const char* msg) ;
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/**
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* Handle ImageFrameView Duration changes
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*
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* @param msg the received message
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*/
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void handle_imageframe_view_duration_update(const char* msg) ;
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/**
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* Handle ImageFrameView Position Lock Constraint changes
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*
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* @param msg the received message
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*/
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void handle_imageframe_position_lock_update(const char* msg) ;
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/**
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* Handle ImageFrameView Maximum Duration changes
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*
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* @param msg the received message
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*/
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void handle_imageframe_view_max_duration_update(const char* msg) ;
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/**
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* Handle image frame max duration enable constraint changes
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*
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* @param msg the received message
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*/
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void handle_imageframe_view_max_duration_enable_update(const char* msg) ;
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/**
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* Handle ImageFrameView Minimum Duration changes
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*
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* @param msg the received message
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*/
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void handle_imageframe_view_min_duration_update(const char* msg) ;
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/**
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* Handle image frame min duration enable constraint changes
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*
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* @param msg the received message
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*/
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void handle_imageframe_view_min_duration_enable_update(const char* msg) ;
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/**
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* Handle MarkerView position changes
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*
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* @param msg the received message
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*/
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void handle_marker_view_position_update(const char* msg) ;
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/**
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* Handle MarkerView duration changes
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*
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* @param msg the received message
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*/
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void handle_marker_view_duration_update(const char* msg) ;
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/**
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* Handle MarkerView Position Lock Constraint changes
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*
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* @param msg the received message
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*/
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void handle_marker_view_position_lock_update(const char* msg) ;
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/**
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* Handle MarkerView maximum duration changes
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*
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* @param msg the received message
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*/
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void handle_marker_view_max_duration_update(const char* msg) ;
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/**
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* Handle MarkerView minimum duration changes
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*
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* @param msg the received message
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*/
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void handle_marker_view_min_duration_update(const char* msg) ;
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//---------------------------------------------------------------------------------------//
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// handlers for Session Actions
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/**
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* Handle the opening of a named audio session
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*
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* @param msg the received message
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*/
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void handle_open_session(const char* msg) ;
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/**
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* Handle the closing of a named audio session
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*
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* @param msg the received message
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*/
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void handle_closed_session(const char* msg) ;
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//---------------------------------------------------------------------------------------//
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// handlers for the shutdown of the Image Compositor
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/**
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* Handle the shutdown message from the image compositor
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*
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* @param msg the received message
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*/
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void handle_shutdown(const char* msg) ;
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//---------------------------------------------------------------------------------------//
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// convenince methods to break up messages
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/**
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* Returns part of the received message as a std::string
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*
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* @param start the start character
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* @param num_chars the number of characters to read
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* @param the message to break apart
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* @return the sub string of the message
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*/
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std::string get_message_part(int start, int32_t num_chars, const char* msg) ;
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/**
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* break up am image item description message
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* we break the mesage up into the parent Image Track id and size,
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* the parent group id and size, and the image id and size
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*
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* @param track_id
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* @param track_id_size
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* @param scene_id
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* @param scene_id_size
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* @param item_id
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* @param item_id_size
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*/
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void decompose_imageframe_item_desc(const char* msg, int& position, std::string& track_id, int& track_id_size, std::string& scene_id, int& scene_id_size, std::string& item_id, int& item_id_size) ;
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/**
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* Compose a description of the specified image frame view
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* The description consists of the parent track name size and name,
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* the parent group name size and name, and the item name size and name
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*
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* @param ifv the item to compose a description of
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* @param buffer the buffer to write the description
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*/
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void compose_imageframe_item_desc(ImageFrameView* ifv, std::ostringstream& buffer) ;
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/**
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* Compose a description of the specified marker view
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* The description consists of the parent track name size and name,
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* and the item name size and name
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*
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* @param mv the item to compose a description of
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* @param buffer the buffer to write the description
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*/
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void compose_marker_item_desc(MarkerView* mv, std::ostringstream& buffer) ;
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/**
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* Returns the ImageFrameView from the specified description
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* The errcode parameter is used to indicate the item which caused
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* an error on failure of this method
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* 0 = suces
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* 1 = the track item was not found
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* 2 = the group item was not found
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* 3 = the imageframe item was not found
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*
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* @paran track_id the track on which the item is placed
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* @param group_id the group in which the item is a member
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* @param item_id the id of the item
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* @param int32_t reference used for error codes on failure
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* @param errmsg populated with a description of the error on failure
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* @return the described item on success, 0 otherwise
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*/
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ImageFrameView* get_imageframe_view_from_desc(const string & track_id, const string & group_ud, const string & item_id, int& errcode, std::string& errmsg) ;
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//---------------------------------------------------------------------------------------//
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// Convenince Message Send Methods
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/**
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* Sends a message throught the socket
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*
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* @param msg the message to send
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* @return the return value of the socket call
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*/
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int send_message(const string & msg) ;
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/**
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* Reads a message from the Socket
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*
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* @param msg a string to populate with the received message
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* @return the return value from the socket call
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*/
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int read_message(std::string& msg) ;
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/**
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* Convenience method to compose and send a success messasge back to the Image Compositor
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*
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*/
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void send_return_success() ;
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/**
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* Convenience method to compose and send a failure messasge back to the Image Compositor
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*
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* @param msg the failure message
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*/
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void send_return_failure(const std::string& msg) ;
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//---------------------------------------------------------------------------------------//
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// Memebr Data
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/** Our instance of the socket handler, singleton */
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static ImageFrameSocketHandler* _instance ;
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/** The Ardour PublicEditor */
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PublicEditor& thePublicEditor ;
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/** the socket file descriptor */
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int theArdourToCompositorSocket ;
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/** This stores the 'tag' returned from gdk_input_add, which is required for removing the input */
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int theGdkInputTag ;
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} ; /* class ImageFrameSocketHandler */
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#endif /* __ardour_gtk_imageframe_socket_handler_h__ */
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