145 lines
4.8 KiB
C++
145 lines
4.8 KiB
C++
/*
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Copyright (C) 2010 Paul Davis
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Author: Robin Gareus <robin@gareus.org>
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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_video_timeline_h__
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#define __ardour_video_timeline_h__
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#include <string>
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#include <sigc++/signal.h>
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#include "ardour/ardour.h"
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#include "ardour/session.h"
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#include "ardour/session_handle.h"
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#include "video_image_frame.h"
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#include "video_monitor.h"
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#include "pbd/signals.h"
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#include "canvas/group.h"
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namespace ARDOUR {
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class Session;
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}
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class PublicEditor;
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/** @class VideoTimeLine
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* @brief video-timline controller and display
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*
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* The video-timeline can be displayed in a canvas-group. Given a filename
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* it queries the video-server about file-information and
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* creates \ref VideoImageFrame as neccesary (which
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* query the server for image-data).
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*
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* This class contains the algorithm to position the single frames
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* on the timeline according to current-zoom level and video-file
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* attributes. see \ref update_video_timeline()
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*
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* The VideoTimeLine class includes functionality to launch a video-monitor
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* corresponding to its currently diplayed file.
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*/
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class VideoTimeLine : public sigc::trackable, public ARDOUR::SessionHandlePtr, public PBD::ScopedConnectionList, public PBD::StatefulDestructible
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{
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public:
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VideoTimeLine (PublicEditor*, ArdourCanvas::Group*, int);
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virtual ~VideoTimeLine ();
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void set_session (ARDOUR::Session *s);
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void update_video_timeline ();
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void set_height (int);
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void save_undo (void);
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XMLNode& get_state ();
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int set_state (const XMLNode&, int version);
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bool video_file_info (std::string, bool);
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double get_video_file_fps () { return video_file_fps; }
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void set_update_session_fps (bool v=true) { auto_set_session_fps = v; }
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void set_offset_locked (bool v);
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void toggle_offset_locked ();
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bool is_offset_locked () { return video_offset_lock; }
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void open_video_monitor ();
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void close_video_monitor ();
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void control_video_monitor (int, int);
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void terminated_video_monitor ();
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void manual_seek_video_monitor (framepos_t pos);
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void parameter_changed (std::string const & p);
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void set_video_server_url (std::string);
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void set_video_server_docroot (std::string);
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bool found_xjadeo () { return ((_xjadeo_bin.empty())?false:true); }
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bool check_server ();
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bool check_server_docroot ();
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void flush_local_cache ();
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void vmon_update ();
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void flush_cache ();
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void save_session ();
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void close_session ();
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void sync_session_state (); /* video-monitor does not actively report window/pos changes, query it */
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float get_apv(); /* audio samples per video frame; */
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ARDOUR::framecnt_t get_duration () { return video_duration;}
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ARDOUR::frameoffset_t get_offset () { return video_offset;}
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ARDOUR::frameoffset_t quantify_frames_to_apv (ARDOUR::frameoffset_t offset) { return floor(offset/get_apv())*get_apv(); }
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void set_offset (ARDOUR::frameoffset_t offset) { video_offset = quantify_frames_to_apv(offset); } // this function does not update video_offset_p, call save_undo() to finalize changes to this! - this fn is currently only used from editor_drag.cc
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protected:
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PublicEditor *editor;
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ArdourCanvas::Group *videotl_group;
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int bar_height;
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std::string _xjadeo_bin;
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void find_xjadeo ();
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ARDOUR::frameoffset_t video_start_offset; /**< unit: audio-samples - video-file */
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ARDOUR::frameoffset_t video_offset; /**< unit: audio-samples - session */
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ARDOUR::frameoffset_t video_offset_p; /**< used for undo from editor_drag.cc */
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framepos_t video_duration; /**< unit: audio-samples */
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std::string video_filename;
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bool local_file;
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double video_aspect_ratio;
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double video_file_fps;
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bool auto_set_session_fps;
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bool video_offset_lock;
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std::string video_server_url;
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std::string server_docroot;
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typedef std::list<VideoImageFrame*> VideoFrames;
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VideoFrames video_frames;
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VideoImageFrame *get_video_frame (framepos_t vfn, int cut=0, int rightend = -1);
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bool flush_frames;
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void remove_frames ();
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std::string translated_filename ();
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VideoMonitor *vmonitor;
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bool reopen_vmonitor;
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PBD::Signal0<void> VtlUpdate;
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PBD::Signal1<void,std::string> GuiUpdate;
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void gui_update (const std::string &);
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PBD::ScopedConnection sessionsave;
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};
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#endif /* __ardour_video_timeline_h__ */
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