#include <wx/wx.h>
#include "lib/film.h"
-#include "lib/decoder_factory.h"
class wxToggleButton;
class FFmpegPlayer;
/** @class FilmViewer
* @brief A wx widget to view a preview of a Film.
+ *
+ * The film takes the following path through the viewer:
+ *
+ * 1. get_frame() asks our _player to decode some data. If it does, process_video()
+ * will be called.
+ *
+ * 2. process_video() takes the image and subtitle from the decoder (_raw_frame and _raw_sub)
+ * and calls raw_to_display().
+ *
+ * 3. raw_to_display() copies _raw_frame to _display_frame, processing it and scaling it.
+ *
+ * 4. calling _panel->Refresh() and _panel->Update() results in paint_panel() being called;
+ * this creates frame_bitmap from _display_frame and blits it to the display. It also
+ * blits the subtitle, if required.
+ *
+ * update_from_decoder() asks the player to re-emit its current frame on the next pass(), and then
+ * starts from step #1.
+ *
+ * update_from_raw() starts at step #3, then calls _panel->Refresh and _panel->Update.
*/
class FilmViewer : public wxPanel
{
void calculate_sizes ();
void check_play_state ();
void update_from_raw ();
- void decoder_changed ();
+ void update_from_decoder ();
void raw_to_display ();
void get_frame ();
void active_jobs_changed (bool);
boost::shared_ptr<Film> _film;
+ boost::shared_ptr<Player> _player;
- wxBoxSizer* _v_sizer;
+ wxSizer* _v_sizer;
wxPanel* _panel;
wxSlider* _slider;
wxToggleButton* _play_button;
wxTimer _timer;
- Decoders _decoders;
boost::shared_ptr<Image> _raw_frame;
boost::shared_ptr<Subtitle> _raw_sub;
boost::shared_ptr<Image> _display_frame;
+ int _display_frame_x;
boost::shared_ptr<RGBPlusAlphaImage> _display_sub;
Position _display_sub_position;
bool _got_frame;
- int _out_width;
- int _out_height;
- int _panel_width;
- int _panel_height;
-
- bool _clear_required;
+ /** Size of our output (including padding if we have any) */
+ libdcp::Size _out_size;
+ /** Size that we will make our film (equal to _out_size unless we have padding) */
+ libdcp::Size _film_size;
+ /** Size of the panel that we have available */
+ libdcp::Size _panel_size;
};