video_image_frame.h

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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_image_frame_h__
#define __ardour_video_image_frame_h__

#include <string>
#include <glib.h>

#include <sigc++/signal.h>
#include <pthread.h>

#include "ardour/ardour.h"
#include "pbd/signals.h"

#include "canvas/container.h"
#include "canvas/pixbuf.h"
#include "canvas/image.h"

namespace ARDOUR {
        class TempoSection;
        class MeterSection;
}

class PublicEditor;

class VideoImageFrame : public sigc::trackable
{
        public:
        VideoImageFrame (PublicEditor&, ArdourCanvas::Container&, int, int, std::string, std::string);
        virtual ~VideoImageFrame ();

        void set_position (framepos_t);
        void set_videoframe (framepos_t, int rightend = -1);
        framepos_t get_video_frame_number() {return video_frame_number;}

        int get_height () {return clip_height;}
        int get_width ()  {return clip_width;}
        int get_rightend() { return rightend;}
        framepos_t get_req_frame () {return req_video_frame_number;}
        std::string get_video_server_url () {return video_server_url;}
        std::string get_video_filename ()   {return video_filename;}

        void http_download_done (char *);
        PBD::Signal0<void> ImgChanged;

        protected:

        PublicEditor& editor;
        ArdourCanvas::Container *_parent;
        ArdourCanvas::Image *image;
        boost::shared_ptr<ArdourCanvas::Image::Data> img;

        int clip_width;
        int clip_height;
        int rightend;

        std::string video_server_url;
        std::string video_filename;

        double        unit_position;
        framepos_t   sample_position;
        framepos_t   video_frame_number;

        void reposition ();
        void exposeimg ();

        void fill_frame (const uint8_t r, const uint8_t g, const uint8_t b);
        void draw_line ();
        void draw_x ();
        void cut_rightend ();


        void http_get(framepos_t fn);
        void http_get_again(framepos_t fn);

        framepos_t req_video_frame_number;
        framepos_t want_video_frame_number;
        bool        queued_request;

        pthread_mutex_t request_lock;
        pthread_mutex_t queue_lock;

        pthread_t      thread_id_tt;
        bool           thread_active;

};

#endif /* __ardour_video_image_frame_h__ */