Merge master.
[dcpomatic.git] / src / wx / film_viewer.cc
index 1cf45fd4e47a568b22ae3af5c94aceb6a069535f..cba19c07c2ba6d093d6e420d33f13f4803bc47e0 100644 (file)
 #include "lib/format.h"
 #include "lib/util.h"
 #include "lib/job_manager.h"
-#include "lib/options.h"
 #include "lib/subtitle.h"
 #include "lib/image.h"
 #include "lib/scaler.h"
+#include "lib/exceptions.h"
+#include "lib/examine_content_job.h"
+#include "lib/filter.h"
+#include "lib/player.h"
+#include "lib/video_content.h"
+#include "lib/ffmpeg_content.h"
+#include "lib/imagemagick_content.h"
 #include "film_viewer.h"
 #include "wx_util.h"
 #include "video_decoder.h"
@@ -40,38 +46,49 @@ using std::string;
 using std::pair;
 using std::max;
 using std::cout;
+using std::list;
 using boost::shared_ptr;
+using boost::dynamic_pointer_cast;
+using boost::weak_ptr;
+using libdcp::Size;
 
 FilmViewer::FilmViewer (shared_ptr<Film> f, wxWindow* p)
        : wxPanel (p)
        , _panel (new wxPanel (this))
        , _slider (new wxSlider (this, wxID_ANY, 0, 0, 4096))
-       , _play_button (new wxToggleButton (this, wxID_ANY, wxT ("Play")))
-       , _out_width (0)
-       , _out_height (0)
-       , _panel_width (0)
-       , _panel_height (0)
+       , _play_button (new wxToggleButton (this, wxID_ANY, _("Play")))
+       , _display_frame_x (0)
+       , _got_frame (false)
 {
-       wxBoxSizer* v_sizer = new wxBoxSizer (wxVERTICAL);
-       SetSizer (v_sizer);
+       _panel->SetDoubleBuffered (true);
+#if wxMAJOR_VERSION == 2 && wxMINOR_VERSION >= 9
+       _panel->SetBackgroundStyle (wxBG_STYLE_PAINT);
+#endif 
+       
+       _v_sizer = new wxBoxSizer (wxVERTICAL);
+       SetSizer (_v_sizer);
 
-       v_sizer->Add (_panel, 1, wxEXPAND);
+       _v_sizer->Add (_panel, 1, wxEXPAND);
 
        wxBoxSizer* h_sizer = new wxBoxSizer (wxHORIZONTAL);
        h_sizer->Add (_play_button, 0, wxEXPAND);
        h_sizer->Add (_slider, 1, wxEXPAND);
 
-       v_sizer->Add (h_sizer, 0, wxEXPAND);
+       _v_sizer->Add (h_sizer, 0, wxEXPAND | wxALL, 6);
+
+       _panel->Connect (wxID_ANY, wxEVT_PAINT, wxPaintEventHandler (FilmViewer::paint_panel), 0, this);
+       _panel->Connect (wxID_ANY, wxEVT_SIZE, wxSizeEventHandler (FilmViewer::panel_sized), 0, this);
+       _slider->Connect (wxID_ANY, wxEVT_SCROLL_THUMBTRACK, wxScrollEventHandler (FilmViewer::slider_moved), 0, this);
+       _slider->Connect (wxID_ANY, wxEVT_SCROLL_PAGEUP, wxScrollEventHandler (FilmViewer::slider_moved), 0, this);
+       _slider->Connect (wxID_ANY, wxEVT_SCROLL_PAGEDOWN, wxScrollEventHandler (FilmViewer::slider_moved), 0, this);
+       _play_button->Connect (wxID_ANY, wxEVT_COMMAND_TOGGLEBUTTON_CLICKED, wxCommandEventHandler (FilmViewer::play_clicked), 0, this);
+       _timer.Connect (wxID_ANY, wxEVT_TIMER, wxTimerEventHandler (FilmViewer::timer), 0, this);
 
-       _panel->Bind (wxEVT_PAINT, &FilmViewer::paint_panel, this);
-       _panel->Bind (wxEVT_SIZE, &FilmViewer::panel_sized, this);
-       _slider->Bind (wxEVT_SCROLL_THUMBTRACK, &FilmViewer::slider_moved, this);
-       _slider->Bind (wxEVT_SCROLL_PAGEUP, &FilmViewer::slider_moved, this);
-       _slider->Bind (wxEVT_SCROLL_PAGEDOWN, &FilmViewer::slider_moved, this);
-       _play_button->Bind (wxEVT_COMMAND_TOGGLEBUTTON_CLICKED, &FilmViewer::play_clicked, this);
-       _timer.Bind (wxEVT_TIMER, &FilmViewer::timer, this);
+       set_film (f);
 
-       set_film (_film);
+       JobManager::instance()->ActiveJobsChanged.connect (
+               bind (&FilmViewer::active_jobs_changed, this, _1)
+               );
 }
 
 void
@@ -84,14 +101,24 @@ FilmViewer::film_changed (Film::Property p)
                break;
        case Film::CONTENT:
        {
-               shared_ptr<DecodeOptions> o (new DecodeOptions);
-               o->decode_audio = false;
-               o->video_sync = false;
-               _decoders = decoder_factory (_film, o, 0);
-               _decoders.video->Video.connect (bind (&FilmViewer::process_video, this, _1, _2));
-               _decoders.video->OutputChanged.connect (boost::bind (&FilmViewer::decoder_changed, this));
+               calculate_sizes ();
+               get_frame ();
+               _panel->Refresh ();
+               _v_sizer->Layout ();
                break;
        }
+       case Film::WITH_SUBTITLES:
+       case Film::SUBTITLE_OFFSET:
+       case Film::SUBTITLE_SCALE:
+               raw_to_display ();
+               _panel->Refresh ();
+               _panel->Update ();
+               break;
+       case Film::SCALER:
+       case Film::FILTERS:
+       case Film::CROP:
+               update_from_decoder ();
+               break;
        default:
                break;
        }
@@ -103,39 +130,63 @@ FilmViewer::set_film (shared_ptr<Film> f)
        if (_film == f) {
                return;
        }
-       
+
        _film = f;
 
+       _raw_frame.reset ();
+       _display_frame.reset ();
+       _panel->Refresh ();
+       _panel->Update ();
+
        if (!_film) {
                return;
        }
 
+       _player = f->player ();
+       _player->disable_audio ();
+       _player->disable_video_sync ();
+       /* Don't disable subtitles here as we may need them, and it's nice to be able to turn them
+          on and off without needing obtain a new Player.
+       */
+       
+       _player->Video.connect (bind (&FilmViewer::process_video, this, _1, _2, _3));
+       
        _film->Changed.connect (boost::bind (&FilmViewer::film_changed, this, _1));
+       _film->ContentChanged.connect (boost::bind (&FilmViewer::film_content_changed, this, _1, _2));
 
        film_changed (Film::CONTENT);
-       film_changed (Film::CROP);
        film_changed (Film::FORMAT);
+       film_changed (Film::WITH_SUBTITLES);
+       film_changed (Film::SUBTITLE_OFFSET);
+       film_changed (Film::SUBTITLE_SCALE);
 }
 
 void
-FilmViewer::decoder_changed ()
+FilmViewer::update_from_decoder ()
 {
-       seek_and_update (_decoders.video->last_source_frame ());
+       if (!_player || _player->seek (_player->last_video_time ())) {
+               return;
+       }
+
+       get_frame ();
+       _panel->Refresh ();
+       _panel->Update ();
 }
 
 void
-FilmViewer::timer (wxTimerEvent& ev)
+FilmViewer::timer (wxTimerEvent &)
 {
+       if (!_player) {
+               return;
+       }
+       
        _panel->Refresh ();
        _panel->Update ();
 
-       shared_ptr<Image> last = _display;
-       while (last == _display) {
-               _decoders.video->pass ();
-       }
+       get_frame ();
 
-       if (_film->length()) {
-               int const new_slider_position = 4096 * _decoders.video->last_source_frame() / _film->length().get();
+       if (_film->video_length()) {
+               int const new_slider_position = 4096 * _player->last_video_time() / (_film->video_length() / _film->video_frame_rate());
                if (new_slider_position != _slider->GetValue()) {
                        _slider->SetValue (new_slider_position);
                }
@@ -144,36 +195,62 @@ FilmViewer::timer (wxTimerEvent& ev)
 
 
 void
-FilmViewer::paint_panel (wxPaintEvent& ev)
+FilmViewer::paint_panel (wxPaintEvent &)
 {
        wxPaintDC dc (_panel);
-       if (!_display) {
+
+       if (!_display_frame || !_film || !_out_size.width || !_out_size.height) {
+               dc.Clear ();
                return;
        }
 
-       wxImage i (_out_width, _out_height, _display->data()[0], true);
-       wxBitmap b (i);
-       dc.DrawBitmap (b, 0, 0);
-}
+       if (_display_frame_x) {
+               dc.SetPen(*wxBLACK_PEN);
+               dc.SetBrush(*wxBLACK_BRUSH);
+               dc.DrawRectangle (0, 0, _display_frame_x, _film_size.height);
+               dc.DrawRectangle (_display_frame_x + _film_size.width, 0, _display_frame_x, _film_size.height);
+       }
 
+       wxImage frame (_film_size.width, _film_size.height, _display_frame->data()[0], true);
+       wxBitmap frame_bitmap (frame);
+       dc.DrawBitmap (frame_bitmap, _display_frame_x, 0);
 
-void
-FilmViewer::slider_moved (wxCommandEvent& ev)
-{
-       if (_film->length()) {
-               seek_and_update (_slider->GetValue() * _film->length().get() / 4096);
+       if (_film->with_subtitles() && _display_sub) {
+               wxImage sub (_display_sub->size().width, _display_sub->size().height, _display_sub->data()[0], _display_sub->alpha(), true);
+               wxBitmap sub_bitmap (sub);
+               dc.DrawBitmap (sub_bitmap, _display_sub_position.x, _display_sub_position.y);
+       }
+
+       if (_out_size.width < _panel_size.width) {
+               wxPen p (GetBackgroundColour ());
+               wxBrush b (GetBackgroundColour ());
+               dc.SetPen (p);
+               dc.SetBrush (b);
+               dc.DrawRectangle (_out_size.width, 0, _panel_size.width - _out_size.width, _panel_size.height);
        }
+
+       if (_out_size.height < _panel_size.height) {
+               wxPen p (GetBackgroundColour ());
+               wxBrush b (GetBackgroundColour ());
+               dc.SetPen (p);
+               dc.SetBrush (b);
+               dc.DrawRectangle (0, _out_size.height, _panel_size.width, _panel_size.height - _out_size.height);
+       }               
 }
 
+
 void
-FilmViewer::seek_and_update (SourceFrame f)
+FilmViewer::slider_moved (wxScrollEvent &)
 {
-       _decoders.video->seek (f);
-       
-       shared_ptr<Image> last = _display;
-       while (last == _display) {
-               _decoders.video->pass ();
+       if (!_film || !_player) {
+               return;
        }
+
+       if (_player->seek (_slider->GetValue() * _film->video_length() / (4096 * _film->video_frame_rate()))) {
+               return;
+       }
+       
+       get_frame ();
        _panel->Refresh ();
        _panel->Update ();
 }
@@ -181,8 +258,8 @@ FilmViewer::seek_and_update (SourceFrame f)
 void
 FilmViewer::panel_sized (wxSizeEvent& ev)
 {
-       _panel_width = ev.GetSize().GetWidth();
-       _panel_height = ev.GetSize().GetHeight();
+       _panel_size.width = ev.GetSize().GetWidth();
+       _panel_size.height = ev.GetSize().GetHeight();
        calculate_sizes ();
        update_from_raw ();
 }
@@ -190,31 +267,91 @@ FilmViewer::panel_sized (wxSizeEvent& ev)
 void
 FilmViewer::update_from_raw ()
 {
-       if (!_raw) {
+       if (!_raw_frame) {
                return;
        }
 
-       if (_out_width && _out_height) {
-               _display = _raw->scale_and_convert_to_rgb (Size (_out_width, _out_height), 0, Scaler::from_id ("bicubic"));
-       }
+       raw_to_display ();
        
        _panel->Refresh ();
        _panel->Update ();
 }
 
+void
+FilmViewer::raw_to_display ()
+{
+       if (!_raw_frame || _out_size.width < 64 || _out_size.height < 64 || !_film) {
+               return;
+       }
+
+       shared_ptr<Image> input = _raw_frame;
+
+       pair<string, string> const s = Filter::ffmpeg_strings (_film->filters());
+       if (!s.second.empty ()) {
+               input = input->post_process (s.second, true);
+       }
+       
+       /* Get a compacted image as we have to feed it to wxWidgets */
+       _display_frame = input->scale_and_convert_to_rgb (_film_size, 0, _film->scaler(), false);
+
+       if (_raw_sub) {
+
+               /* Our output is already cropped by the decoder, so we need to account for that
+                  when working out the scale that we are applying.
+               */
+
+               Size const cropped_size = _film->cropped_size (_film->video_size ());
+
+               Rect tx = subtitle_transformed_area (
+                       float (_film_size.width) / cropped_size.width,
+                       float (_film_size.height) / cropped_size.height,
+                       _raw_sub->area(), _film->subtitle_offset(), _film->subtitle_scale()
+                       );
+               
+               _display_sub.reset (new RGBPlusAlphaImage (_raw_sub->image()->scale (tx.size(), _film->scaler(), false)));
+               _display_sub_position = tx.position();
+               _display_sub_position.x += _display_frame_x;
+       } else {
+               _display_sub.reset ();
+       }
+}      
+
 void
 FilmViewer::calculate_sizes ()
 {
-       float const panel_ratio = static_cast<float> (_panel_width) / _panel_height;
-       float const film_ratio = _film->format() ? _film->format()->ratio_as_float(_film) : 1.78;
+       if (!_film || !_player) {
+               return;
+       }
+
+       Format const * format = _film->format ();
+       
+       float const panel_ratio = static_cast<float> (_panel_size.width) / _panel_size.height;
+       float const film_ratio = format ? format->container_ratio_as_float () : 1.78;
+                       
        if (panel_ratio < film_ratio) {
                /* panel is less widscreen than the film; clamp width */
-               _out_width = _panel_width;
-               _out_height = _out_width / film_ratio;
+               _out_size.width = _panel_size.width;
+               _out_size.height = _out_size.width / film_ratio;
        } else {
-               /* panel is more widescreen than the film; clamp heignt */
-               _out_height = _panel_height;
-               _out_width = _out_height * film_ratio;
+               /* panel is more widescreen than the film; clamp height */
+               _out_size.height = _panel_size.height;
+               _out_size.width = _out_size.height * film_ratio;
+       }
+
+       /* Work out how much padding there is in terms of our display; this will be the x position
+          of our _display_frame.
+       */
+       _display_frame_x = 0;
+       if (format) {
+               _display_frame_x = static_cast<float> (format->dcp_padding (_film)) * _out_size.width / format->dcp_size().width;
+       }
+
+       _film_size = _out_size;
+       _film_size.width -= _display_frame_x * 2;
+
+       /* Catch silly values */
+       if (_out_size.width < 64) {
+               _out_size.width = 64;
        }
 }
 
@@ -227,18 +364,86 @@ FilmViewer::play_clicked (wxCommandEvent &)
 void
 FilmViewer::check_play_state ()
 {
+       if (!_film) {
+               return;
+       }
+       
        if (_play_button->GetValue()) {
-               _timer.Start (1000 / _film->frames_per_second());
+               _timer.Start (1000 / _film->video_frame_rate());
        } else {
                _timer.Stop ();
        }
 }
 
 void
-FilmViewer::process_video (shared_ptr<Image> image, shared_ptr<Subtitle> sub)
+FilmViewer::process_video (shared_ptr<Image> image, bool, shared_ptr<Subtitle> sub)
+{
+       _raw_frame = image;
+       _raw_sub = sub;
+
+       raw_to_display ();
+
+       _got_frame = true;
+}
+
+/** Get a new _raw_frame from the decoder and then do
+ *  raw_to_display ().
+ */
+void
+FilmViewer::get_frame ()
+{
+       /* Clear our raw frame in case we don't get a new one */
+       _raw_frame.reset ();
+
+       if (!_player) {
+               _display_frame.reset ();
+               return;
+       }
+
+       try {
+               _got_frame = false;
+               while (!_got_frame) {
+                       if (_player->pass ()) {
+                               /* We didn't get a frame before the decoder gave up,
+                                  so clear our display frame.
+                               */
+                               _display_frame.reset ();
+                               break;
+                       }
+               }
+       } catch (DecodeError& e) {
+               _play_button->SetValue (false);
+               check_play_state ();
+               error_dialog (this, wxString::Format (_("Could not decode video for view (%s)"), std_to_wx(e.what()).data()));
+       }
+}
+
+void
+FilmViewer::active_jobs_changed (bool a)
+{
+       if (a) {
+               list<shared_ptr<Job> > jobs = JobManager::instance()->get ();
+               list<shared_ptr<Job> >::iterator i = jobs.begin ();             
+               while (i != jobs.end() && boost::dynamic_pointer_cast<ExamineContentJob> (*i) == 0) {
+                       ++i;
+               }
+               
+               if (i == jobs.end() || (*i)->finished()) {
+                       /* no examine content job running, so we're ok to use the viewer */
+                       a = false;
+               }
+       }
+                       
+       _slider->Enable (!a);
+       _play_button->Enable (!a);
+}
+
+void
+FilmViewer::film_content_changed (weak_ptr<Content>, int p)
 {
-       _raw = image;
-       if (_out_width && _out_height) {
-               _display = _raw->scale_and_convert_to_rgb (Size (_out_width, _out_height), 0, Scaler::from_id ("bicubic"));
+       if (p == VideoContentProperty::VIDEO_LENGTH) {
+               /* Force an update to our frame */
+               wxScrollEvent ev;
+               slider_moved (ev);
        }
 }