Basic ffmpeg film viewer.
[dcpomatic.git] / src / wx / film_viewer.cc
index a821323586dd2cce1c5e29b275aac541667bca7f..edeb8fd3f9e9d2f040fd5e94360fe317717d4485 100644 (file)
 */
 
 /** @file  src/film_viewer.cc
- *  @brief A wx widget to view `thumbnails' of a Film.
+ *  @brief A wx widget to view a preview of a Film.
  */
 
 #include <iostream>
 #include <iomanip>
+#include <wx/tglbtn.h>
 #include "lib/film.h"
 #include "lib/format.h"
 #include "lib/util.h"
 #include "lib/subtitle.h"
 #include "film_viewer.h"
 #include "wx_util.h"
+#include "ffmpeg_player.h"
 
 using std::string;
 using std::pair;
 using std::max;
 using boost::shared_ptr;
 
-class ThumbPanel : public wxPanel
-{
-public:
-       ThumbPanel (wxPanel* parent, shared_ptr<Film> film)
-               : wxPanel (parent)
-               , _film (film)
-               , _index (0)
-               , _frame_rebuild_needed (false)
-               , _composition_needed (false)
-       {}
-
-       /** Handle a paint event */
-       void paint_event (wxPaintEvent& ev)
-       {
-               if (!_film || _film->thumbs().size() == 0) {
-                       wxPaintDC dc (this);
-                       return;
-               }
-
-               if (_frame_rebuild_needed) {
-                       _image.reset (new wxImage (std_to_wx (_film->thumb_file (_index))));
-
-                       _subtitle.reset ();
-                       pair<Position, string> s = _film->thumb_subtitle (_index);
-                       if (!s.second.empty ()) {
-                               _subtitle.reset (new SubtitleView (s.first, std_to_wx (s.second)));
-                       }
-
-                       _frame_rebuild_needed = false;
-                       compose ();
-               }
-
-               if (_composition_needed) {
-                       compose ();
-               }
-
-               wxPaintDC dc (this);
-               if (_bitmap) {
-                       dc.DrawBitmap (*_bitmap, 0, 0, false);
-               }
-
-               if (_film->with_subtitles() && _subtitle) {
-                       dc.DrawBitmap (*_subtitle->bitmap, _subtitle->transformed_area.x, _subtitle->transformed_area.y, true);
-               }
-       }
-
-       /** Handle a size event */
-       void size_event (wxSizeEvent &)
-       {
-               if (!_image) {
-                       return;
-               }
-
-               recompose ();
-       }
-
-       /** @param n Thumbnail index */
-       void set (int n)
-       {
-               _index = n;
-               _frame_rebuild_needed = true;
-               Refresh ();
-       }
-
-       void set_film (shared_ptr<Film> f)
-       {
-               _film = f;
-               if (!_film) {
-                       clear ();
-                       _frame_rebuild_needed = true;
-                       Refresh ();
-               } else {
-                       _frame_rebuild_needed = true;
-                       Refresh ();
-               }
-       }
-
-       /** Clear our thumbnail image */
-       void clear ()
-       {
-               _bitmap.reset ();
-               _image.reset ();
-               _subtitle.reset ();
-       }
-
-       void recompose ()
-       {
-               _composition_needed = true;
-               Refresh ();
-       }
-
-       DECLARE_EVENT_TABLE ();
-
-private:
-
-       void compose ()
-       {
-               _composition_needed = false;
-               
-               if (!_film || !_image) {
-                       return;
-               }
-
-               /* Size of the view */
-               int vw, vh;
-               GetSize (&vw, &vh);
-
-               Crop const fc = _film->crop ();
-
-               /* Cropped rectangle */
-               Rect cropped_area (
-                       fc.left,
-                       fc.top,
-                       _image->GetWidth() - (fc.left + fc.right),
-                       _image->GetHeight() - (fc.top + fc.bottom)
-                       );
-
-               /* Target ratio */
-               float const target = _film->format() ? _film->format()->ratio_as_float (_film) : 1.78;
-
-               _transformed_image = _image->GetSubImage (wxRect (cropped_area.x, cropped_area.y, cropped_area.width, cropped_area.height));
-
-               float x_scale = 1;
-               float y_scale = 1;
-
-               if ((float (vw) / vh) > target) {
-                       /* view is longer (horizontally) than the ratio; fit height */
-                       _transformed_image.Rescale (vh * target, vh, wxIMAGE_QUALITY_HIGH);
-                       x_scale = vh * target / cropped_area.width;
-                       y_scale = float (vh) / cropped_area.height;
-               } else {
-                       /* view is shorter (horizontally) than the ratio; fit width */
-                       _transformed_image.Rescale (vw, vw / target, wxIMAGE_QUALITY_HIGH);
-                       x_scale = float (vw) / cropped_area.width;
-                       y_scale = (vw / target) / cropped_area.height;
-               }
-
-               _bitmap.reset (new wxBitmap (_transformed_image));
-
-               if (_subtitle) {
-
-                       _subtitle->transformed_area = subtitle_transformed_area (
-                               x_scale, y_scale, _subtitle->base_area, _film->subtitle_offset(), _film->subtitle_scale()
-                               );
-
-                       _subtitle->transformed_image = _subtitle->base_image;
-                       _subtitle->transformed_image.Rescale (_subtitle->transformed_area.width, _subtitle->transformed_area.height, wxIMAGE_QUALITY_HIGH);
-                       _subtitle->transformed_area.x -= rint (_film->crop().left * x_scale);
-                       _subtitle->transformed_area.y -= rint (_film->crop().top * y_scale);
-                       _subtitle->bitmap.reset (new wxBitmap (_subtitle->transformed_image));
-               }
-       }
-
-       shared_ptr<Film> _film;
-       shared_ptr<wxImage> _image;
-       wxImage _transformed_image;
-       /** currently-displayed thumbnail index */
-       int _index;
-       shared_ptr<wxBitmap> _bitmap;
-       bool _frame_rebuild_needed;
-       bool _composition_needed;
-
-       struct SubtitleView
-       {
-               SubtitleView (Position p, wxString const & i)
-                       : base_image (i)
-               {
-                       base_area.x = p.x;
-                       base_area.y = p.y;
-                       base_area.width = base_image.GetWidth ();
-                       base_area.height = base_image.GetHeight ();
-               }
-
-               Rect base_area;
-               Rect transformed_area;
-               wxImage base_image;
-               wxImage transformed_image;
-               shared_ptr<wxBitmap> bitmap;
-       };
-
-       shared_ptr<SubtitleView> _subtitle;
-};
-
-BEGIN_EVENT_TABLE (ThumbPanel, wxPanel)
-EVT_PAINT (ThumbPanel::paint_event)
-EVT_SIZE (ThumbPanel::size_event)
-END_EVENT_TABLE ()
-
 FilmViewer::FilmViewer (shared_ptr<Film> f, wxWindow* p)
        : wxPanel (p)
+       , _player (new FFmpegPlayer (this))
 {
-       _sizer = new wxBoxSizer (wxVERTICAL);
-       SetSizer (_sizer);
-       
-       _thumb_panel = new ThumbPanel (this, f);
-       _sizer->Add (_thumb_panel, 1, wxEXPAND);
+       wxBoxSizer* v_sizer = new wxBoxSizer (wxVERTICAL);
+       SetSizer (v_sizer);
 
-       int const m = max ((size_t) 1, f ? f->thumbs().size() - 1 : 0);
-       _slider = new wxSlider (this, wxID_ANY, 0, 0, m);
-       _sizer->Add (_slider, 0, wxEXPAND | wxLEFT | wxRIGHT);
-       set_thumbnail (0);
+       v_sizer->Add (_player->panel(), 1, wxEXPAND);
 
-       _slider->Connect (wxID_ANY, wxEVT_COMMAND_SLIDER_UPDATED, wxCommandEventHandler (FilmViewer::slider_changed), 0, this);
+       wxBoxSizer* h_sizer = new wxBoxSizer (wxHORIZONTAL);
+       h_sizer->Add (_player->play_button(), 0, wxEXPAND);
+       h_sizer->Add (_player->slider(), 1, wxEXPAND);
 
-       set_film (_film);
-}
+       v_sizer->Add (h_sizer, 0, wxEXPAND);
 
-void
-FilmViewer::set_thumbnail (int n)
-{
-       if (_film == 0 || int (_film->thumbs().size()) <= n) {
-               return;
-       }
-
-       _thumb_panel->set (n);
-}
-
-void
-FilmViewer::slider_changed (wxCommandEvent &)
-{
-       set_thumbnail (_slider->GetValue ());
+       set_film (_film);
 }
 
 void
@@ -266,27 +63,27 @@ FilmViewer::film_changed (Film::Property p)
        ensure_ui_thread ();
        
        switch (p) {
-       case Film::THUMBS:
-               if (_film && _film->thumbs().size() > 1) {
-                       _slider->SetRange (0, _film->thumbs().size() - 1);
-               } else {
-                       _thumb_panel->clear ();
-                       _slider->SetRange (0, 1);
-               }
                
-               _slider->SetValue (0);
-               set_thumbnail (0);
-               break;
        case Film::CONTENT:
-               setup_visibility ();
+               _player->set_file (_film->content_path ());
                break;
+               
        case Film::CROP:
+       {
+               Crop c = _film->crop ();
+               _player->set_left_crop (c.left);
+               _player->set_right_crop (c.right);
+               _player->set_top_crop (c.top);
+               _player->set_bottom_crop (c.bottom);
+       }
+       break;
+
        case Film::FORMAT:
-       case Film::WITH_SUBTITLES:
-       case Film::SUBTITLE_OFFSET:
-       case Film::SUBTITLE_SCALE:
-               _thumb_panel->recompose ();
+               if (_film->format()) {
+                       _player->set_ratio (_film->format()->ratio_as_float(_film));
+               }
                break;
+               
        default:
                break;
        }
@@ -300,25 +97,13 @@ FilmViewer::set_film (shared_ptr<Film> f)
        }
        
        _film = f;
-       _thumb_panel->set_film (_film);
 
        if (!_film) {
                return;
        }
 
        _film->Changed.connect (bind (&FilmViewer::film_changed, this, _1));
+       film_changed (Film::CONTENT);
        film_changed (Film::CROP);
-       film_changed (Film::THUMBS);
-       setup_visibility ();
-}
-
-void
-FilmViewer::setup_visibility ()
-{
-       if (!_film) {
-               return;
-       }
-
-       ContentType const c = _film->content_type ();
-       _slider->Show (c == VIDEO);
+       film_changed (Film::FORMAT);
 }