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/*
Copyright (C) 2010 Paul Davis
Author: Robin Gareus <robin@gareus.org>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef __ardour_video_timeline_h__
#define __ardour_video_timeline_h__
#include <string>
#include <sigc++/signal.h>
#include "ardour/ardour.h"
#include "ardour/session.h"
#include "ardour/session_handle.h"
#include "video_image_frame.h"
#include "video_monitor.h"
#include "pbd/signals.h"
#include "canvas/container.h"
namespace ARDOUR {
class Session;
}
class PublicEditor;
/** @class VideoTimeLine
* @brief video-timline controller and display
*
* The video-timeline can be displayed in a canvas-group. Given a filename
* it queries the video-server about file-information and
* creates \ref VideoImageFrame as neccesary (which
* query the server for image-data).
*
* This class contains the algorithm to position the single frames
* on the timeline according to current-zoom level and video-file
* attributes. see \ref update_video_timeline()
*
* The VideoTimeLine class includes functionality to launch a video-monitor
* corresponding to its currently diplayed file.
*/
class VideoTimeLine : public sigc::trackable, public ARDOUR::SessionHandlePtr, public PBD::ScopedConnectionList, public PBD::StatefulDestructible
{
public:
VideoTimeLine (PublicEditor*, ArdourCanvas::Container*, int);
virtual ~VideoTimeLine ();
void set_session (ARDOUR::Session *s);
void update_video_timeline ();
void set_height (int);
void save_undo (void);
XMLNode& get_state ();
int set_state (const XMLNode&, int version);
bool video_file_info (std::string, bool);
double get_video_file_fps () { return video_file_fps; }
void set_update_session_fps (bool v=true) { auto_set_session_fps = v; }
void set_offset_locked (bool v);
void toggle_offset_locked ();
bool is_offset_locked () { return video_offset_lock; }
void open_video_monitor ();
void close_video_monitor ();
void control_video_monitor (int, int);
void terminated_video_monitor ();
void manual_seek_video_monitor (framepos_t pos);
void parameter_changed (std::string const & p);
void set_video_server_url (std::string);
void set_video_server_docroot (std::string);
bool found_xjadeo () { return ((_xjadeo_bin.empty())?false:true); }
bool check_server ();
bool check_server_docroot ();
void flush_local_cache ();
void vmon_update ();
void flush_cache ();
void save_session ();
void close_session ();
void sync_session_state (); /* video-monitor does not actively report window/pos changes, query it */
float get_apv(); /* audio samples per video frame; */
ARDOUR::framecnt_t get_duration () { return video_duration;}
ARDOUR::frameoffset_t get_offset () { return video_offset;}
ARDOUR::frameoffset_t quantify_frames_to_apv (ARDOUR::frameoffset_t offset) { return rint(offset/get_apv())*get_apv(); }
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
protected:
PublicEditor *editor;
ArdourCanvas::Container *videotl_group;
int bar_height;
std::string _xjadeo_bin;
void find_xjadeo ();
ARDOUR::frameoffset_t video_start_offset; /**< unit: audio-samples - video-file */
ARDOUR::frameoffset_t video_offset; /**< unit: audio-samples - session */
ARDOUR::frameoffset_t video_offset_p; /**< used for undo from editor_drag.cc */
framepos_t video_duration; /**< unit: audio-samples */
std::string video_filename;
bool local_file;
double video_aspect_ratio;
double video_file_fps;
bool auto_set_session_fps;
bool video_offset_lock;
std::string video_server_url;
std::string server_docroot;
void xjadeo_readversion (std::string d, size_t s);
std::string xjadeo_version;
typedef std::list<VideoImageFrame*> VideoFrames;
VideoFrames video_frames;
VideoImageFrame *get_video_frame (framepos_t vfn, int cut=0, int rightend = -1);
bool flush_frames;
void remove_frames ();
std::string translated_filename ();
VideoMonitor *vmonitor;
bool reopen_vmonitor;
PBD::Signal0<void> VtlUpdate;
PBD::Signal1<void,std::string> GuiUpdate;
void gui_update (const std::string &);
PBD::ScopedConnection sessionsave;
};
#endif /* __ardour_video_timeline_h__ */
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