X-Git-Url: https://git.carlh.net/gitweb/?a=blobdiff_plain;f=src%2Fwx%2Ffilm_viewer.cc;h=f8373d3fdc1f31655d9bea599396c24c4c880a1c;hb=d62877ae6c4e316e43f4052e4b9ba673610012cf;hp=e2642321289b4af91574d9082ee84b08e6f5c138;hpb=bd8fa9a370f1739952c83107352baa08c79d095e;p=dcpomatic.git

diff --git a/src/wx/film_viewer.cc b/src/wx/film_viewer.cc
index e26423212..f8373d3fd 100644
--- a/src/wx/film_viewer.cc
+++ b/src/wx/film_viewer.cc
@@ -18,305 +18,416 @@
 */
 
 /** @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/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"
-
-using namespace std;
-using namespace boost;
-
-class ThumbPanel : public wxPanel
+#include "video_decoder.h"
+
+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 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, _("Play")))
+	, _display_frame_x (0)
+	, _got_frame (false)
 {
-public:
-	ThumbPanel (wxPanel* parent, Film* film)
-		: wxPanel (parent)
-		, _film (film)
-		, _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;
-		}
+	_panel->SetDoubleBuffered (true);
+#if wxMAJOR_VERSION == 2 && wxMINOR_VERSION >= 9
+	_panel->SetBackgroundStyle (wxBG_STYLE_PAINT);
+#endif	
+	
+	_v_sizer = new wxBoxSizer (wxVERTICAL);
+	SetSizer (_v_sizer);
 
-		if (_frame_rebuild_needed) {
-			_image.reset (new wxImage (std_to_wx (_film->thumb_file (_index))));
+	_v_sizer->Add (_panel, 1, wxEXPAND);
 
-			_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)));
-			}
+	wxBoxSizer* h_sizer = new wxBoxSizer (wxHORIZONTAL);
+	h_sizer->Add (_play_button, 0, wxEXPAND);
+	h_sizer->Add (_slider, 1, wxEXPAND);
 
-			_frame_rebuild_needed = false;
-			compose ();
-		}
+	_v_sizer->Add (h_sizer, 0, wxEXPAND | wxALL, 6);
 
-		if (_composition_needed) {
-			compose ();
-		}
+	_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);
 
-		wxPaintDC dc (this);
-		if (_bitmap) {
-			dc.DrawBitmap (*_bitmap, 0, 0, false);
-		}
+	set_film (f);
 
-		if (_film->with_subtitles() && _subtitle) {
-			dc.DrawBitmap (*_subtitle->bitmap, _subtitle->transformed_area.x, _subtitle->transformed_area.y, true);
-		}
-	}
+	JobManager::instance()->ActiveJobsChanged.connect (
+		bind (&FilmViewer::active_jobs_changed, this, _1)
+		);
+}
 
-	/** Handle a size event */
-	void size_event (wxSizeEvent &)
+void
+FilmViewer::film_changed (Film::Property p)
+{
+	switch (p) {
+	case Film::FORMAT:
+		calculate_sizes ();
+		update_from_raw ();
+		break;
+	case Film::CONTENT:
 	{
-		if (!_image) {
-			return;
-		}
-
-		recompose ();
+		calculate_sizes ();
+		get_frame ();
+		_panel->Refresh ();
+		_v_sizer->Layout ();
+		break;
 	}
-
-	/** @param n Thumbnail index */
-	void set (int n)
-	{
-		_index = n;
-		_frame_rebuild_needed = true;
-		Refresh ();
+	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;
 	}
+}
 
-	void set_film (Film* f)
-	{
-		_film = f;
-		if (!_film) {
-			clear ();
-			_frame_rebuild_needed = true;
-			Refresh ();
-		} else {
-			_frame_rebuild_needed = true;
-			Refresh ();
-		}
+void
+FilmViewer::set_film (shared_ptr<Film> f)
+{
+	if (_film == f) {
+		return;
 	}
 
-	/** Clear our thumbnail image */
-	void clear ()
-	{
-		_bitmap.reset ();
-		_image.reset ();
-		_subtitle.reset ();
+	_film = f;
+
+	if (!_film) {
+		return;
 	}
 
-	void recompose ()
-	{
-		_composition_needed = true;
-		Refresh ();
+	_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_changed (Film::CONTENT);
+	film_changed (Film::FORMAT);
+	film_changed (Film::WITH_SUBTITLES);
+	film_changed (Film::SUBTITLE_OFFSET);
+	film_changed (Film::SUBTITLE_SCALE);
+}
+
+void
+FilmViewer::update_from_decoder ()
+{
+	if (!_player || _player->seek_to_last ()) {
+		return;
 	}
 
-	DECLARE_EVENT_TABLE ();
+	get_frame ();
+	_panel->Refresh ();
+	_panel->Update ();
+}
+
+void
+FilmViewer::timer (wxTimerEvent &)
+{
+	if (!_player) {
+		return;
+	}
+	
+	_panel->Refresh ();
+	_panel->Update ();
 
-private:
+	get_frame ();
 
-	void compose ()
-	{
-		_composition_needed = false;
-		
-		if (!_film || !_image) {
-			return;
+	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);
 		}
+	}
+}
 
-		/* Size of the view */
-		int vw, vh;
-		GetSize (&vw, &vh);
 
-		Crop const fc = _film->crop ();
+void
+FilmViewer::paint_panel (wxPaintEvent &)
+{
+	wxPaintDC dc (_panel);
 
-		/* Cropped rectangle */
-		Rect cropped_area (
-			fc.left,
-			fc.top,
-			_image->GetWidth() - (fc.left + fc.right),
-			_image->GetHeight() - (fc.top + fc.bottom)
-			);
+	if (!_display_frame || !_film || !_out_size.width || !_out_size.height) {
+		dc.Clear ();
+		return;
+	}
 
-		/* Target ratio */
-		float const target = _film->format() ? _film->format()->ratio_as_float (_film) : 1.78;
+	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);
+	}
 
-		_transformed_image = _image->GetSubImage (wxRect (cropped_area.x, cropped_area.y, cropped_area.width, cropped_area.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);
 
-		float x_scale = 1;
-		float y_scale = 1;
+	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 ((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;
-		}
+	if (_film_size.width < _panel_size.width) {
+		wxPen p (GetBackgroundColour ());
+		wxBrush b (GetBackgroundColour ());
+		dc.SetPen (p);
+		dc.SetBrush (b);
+		dc.DrawRectangle (_film_size.width, 0, _panel_size.width - _film_size.width, _panel_size.height);
+	}
 
-		_bitmap.reset (new wxBitmap (_transformed_image));
+	if (_film_size.height < _panel_size.height) {
+		wxPen p (GetBackgroundColour ());
+		wxBrush b (GetBackgroundColour ());
+		dc.SetPen (p);
+		dc.SetBrush (b);
+		dc.DrawRectangle (0, _film_size.height, _panel_size.width, _panel_size.height - _film_size.height);
+	}		
+}
 
-		if (_subtitle) {
 
-			_subtitle->transformed_area = subtitle_transformed_area (
-				x_scale, y_scale, _subtitle->base_area,	_film->subtitle_offset(), _film->subtitle_scale()
-				);
+void
+FilmViewer::slider_moved (wxScrollEvent &)
+{
+	if (!_film || !_player) {
+		return;
+	}
 
-			_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));
-		}
+	if (_player->seek (_slider->GetValue() * _film->video_length() / (4096 * _film->video_frame_rate()))) {
+		return;
 	}
+	
+	get_frame ();
+	_panel->Refresh ();
+	_panel->Update ();
+}
 
-	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;
+void
+FilmViewer::panel_sized (wxSizeEvent& ev)
+{
+	_panel_size.width = ev.GetSize().GetWidth();
+	_panel_size.height = ev.GetSize().GetHeight();
+	calculate_sizes ();
+	update_from_raw ();
+}
 
-	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 ();
-		}
+void
+FilmViewer::update_from_raw ()
+{
+	if (!_raw_frame) {
+		return;
+	}
 
-		Rect base_area;
-		Rect transformed_area;
-		wxImage base_image;
-		wxImage transformed_image;
-		shared_ptr<wxBitmap> bitmap;
-	};
+	raw_to_display ();
+	
+	_panel->Refresh ();
+	_panel->Update ();
+}
 
-	shared_ptr<SubtitleView> _subtitle;
-};
+void
+FilmViewer::raw_to_display ()
+{
+	if (!_raw_frame || _out_size.width < 64 || _out_size.height < 64 || !_film) {
+		return;
+	}
 
-BEGIN_EVENT_TABLE (ThumbPanel, wxPanel)
-EVT_PAINT (ThumbPanel::paint_event)
-EVT_SIZE (ThumbPanel::size_event)
-END_EVENT_TABLE ()
+	shared_ptr<Image> input = _raw_frame;
 
-FilmViewer::FilmViewer (Film* f, wxWindow* p)
-	: wxPanel (p)
-	, _film (0)
-{
-	_sizer = new wxBoxSizer (wxVERTICAL);
-	SetSizer (_sizer);
+	pair<string, string> const s = Filter::ffmpeg_strings (_film->filters());
+	if (!s.second.empty ()) {
+		input = input->post_process (s.second, true);
+	}
 	
-	_thumb_panel = new ThumbPanel (this, f);
-	_sizer->Add (_thumb_panel, 1, wxEXPAND);
+	/* 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);
 
-	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);
+	if (_raw_sub) {
 
-	_slider->Connect (wxID_ANY, wxEVT_COMMAND_SLIDER_UPDATED, wxCommandEventHandler (FilmViewer::slider_changed), 0, this);
+		/* Our output is already cropped by the decoder, so we need to account for that
+		   when working out the scale that we are applying.
+		*/
 
-	set_film (_film);
-}
+		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::set_thumbnail (int n)
+FilmViewer::calculate_sizes ()
 {
-	if (_film == 0 || int (_film->thumbs().size()) <= n) {
+	if (!_film || !_player) {
 		return;
 	}
 
-	_thumb_panel->set (n);
+	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_size.width = _panel_size.width;
+		_out_size.height = _out_size.width / film_ratio;
+	} else {
+		/* 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;
+	}
 }
 
 void
-FilmViewer::slider_changed (wxCommandEvent &)
+FilmViewer::play_clicked (wxCommandEvent &)
 {
-	set_thumbnail (_slider->GetValue ());
+	check_play_state ();
 }
 
 void
-FilmViewer::film_changed (Film::Property p)
+FilmViewer::check_play_state ()
 {
-	ensure_ui_thread ();
+	if (!_film) {
+		return;
+	}
 	
-	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 ();
-		break;
-	case Film::CROP:
-	case Film::FORMAT:
-	case Film::WITH_SUBTITLES:
-	case Film::SUBTITLE_OFFSET:
-	case Film::SUBTITLE_SCALE:
-		_thumb_panel->recompose ();
-		break;
-	default:
-		break;
+	if (_play_button->GetValue()) {
+		_timer.Start (1000 / _film->video_frame_rate());
+	} else {
+		_timer.Stop ();
 	}
 }
 
 void
-FilmViewer::set_film (Film* f)
+FilmViewer::process_video (shared_ptr<Image> image, bool, shared_ptr<Subtitle> sub)
 {
-	if (_film == f) {
-		return;
-	}
-	
-	_film = f;
-	_thumb_panel->set_film (_film);
+	_raw_frame = image;
+	_raw_sub = sub;
 
-	if (!_film) {
-		return;
-	}
+	raw_to_display ();
 
-	_film->Changed.connect (sigc::mem_fun (*this, &FilmViewer::film_changed));
-	film_changed (Film::CROP);
-	film_changed (Film::THUMBS);
-	setup_visibility ();
+	_got_frame = true;
 }
 
+/** Get a new _raw_frame from the decoder and then do
+ *  raw_to_display ().
+ */
 void
-FilmViewer::setup_visibility ()
+FilmViewer::get_frame ()
 {
-	if (!_film) {
+	/* Clear our raw frame in case we don't get a new one */
+	_raw_frame.reset ();
+
+	if (!_player) {
+		_display_frame.reset ();
 		return;
 	}
 
-	ContentType const c = _film->content_type ();
-	_slider->Show (c == VIDEO);
+	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);
+}
+