*/
/** @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/thumbs_job.h"
#include "lib/job_manager.h"
-#include "lib/film_state.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 "film_viewer.h"
#include "wx_util.h"
+#include "video_decoder.h"
-using namespace std;
-using namespace boost;
+using std::string;
+using std::pair;
+using std::max;
+using std::cout;
+using std::list;
+using boost::shared_ptr;
+using libdcp::Size;
-class ThumbPanel : public wxPanel
+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")))
+ , _got_frame (false)
+ , _out_width (0)
+ , _out_height (0)
+ , _panel_width (0)
+ , _panel_height (0)
+ , _clear_required (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) {
- wxPaintDC dc (this);
- return;
- }
-
- if (_frame_rebuild_needed) {
- _image.reset (new wxImage (std_to_wx (_film->thumb_file (_index))));
-
- _subtitles.clear ();
- list<pair<Position, string> > s = _film->thumb_subtitles (_index);
- for (list<pair<Position, string> >::iterator i = s.begin(); i != s.end(); ++i) {
- _subtitles.push_back (SubtitleView (i->first, std_to_wx (i->second)));
- }
-
- _frame_rebuild_needed = false;
+ _panel->SetDoubleBuffered (true);
+#if wxMAJOR_VERSION == 2 && wxMINOR_VERSION >= 9
+ _panel->SetBackgroundStyle (wxBG_STYLE_PAINT);
+#endif
+
+ _v_sizer = new wxBoxSizer (wxVERTICAL);
+ SetSizer (_v_sizer);
- compose ();
- _composition_needed = false;
- }
+ _v_sizer->Add (_panel, 1, wxEXPAND);
- if (_composition_needed) {
- compose ();
- _composition_needed = false;
- }
+ wxBoxSizer* h_sizer = new wxBoxSizer (wxHORIZONTAL);
+ h_sizer->Add (_play_button, 0, wxEXPAND);
+ h_sizer->Add (_slider, 1, wxEXPAND);
- wxPaintDC dc (this);
- if (_bitmap) {
- dc.DrawBitmap (*_bitmap, 0, 0, false);
- }
+ _v_sizer->Add (h_sizer, 0, wxEXPAND);
- if (_film->with_subtitles ()) {
- for (list<SubtitleView>::iterator i = _subtitles.begin(); i != _subtitles.end(); ++i) {
- dc.DrawBitmap (*i->bitmap, i->transformed_position.x, i->transformed_position.y, true);
- }
- }
- }
+ _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);
- /** Handle a size event */
- void size_event (wxSizeEvent &)
- {
- if (!_image) {
- return;
- }
+ set_film (f);
- recompose ();
- }
+ JobManager::instance()->ActiveJobsChanged.connect (
+ bind (&FilmViewer::active_jobs_changed, this, _1)
+ );
+}
- /** @param n Thumbnail index */
- void set (int n)
+void
+FilmViewer::film_changed (Film::Property p)
+{
+ switch (p) {
+ case Film::FORMAT:
+ calculate_sizes ();
+ update_from_raw ();
+ break;
+ case Film::CONTENT:
{
- _index = n;
- _frame_rebuild_needed = true;
- Refresh ();
+ DecodeOptions o;
+ o.decode_audio = false;
+ o.decode_subtitles = true;
+ o.video_sync = false;
+ _decoders = decoder_factory (_film, o, 0);
+ _decoders.video->Video.connect (bind (&FilmViewer::process_video, this, _1, _2, _3));
+ _decoders.video->OutputChanged.connect (boost::bind (&FilmViewer::decoder_changed, this));
+ _decoders.video->set_subtitle_stream (_film->subtitle_stream());
+ calculate_sizes ();
+ get_frame ();
+ _panel->Refresh ();
+ _slider->Show (_film->content_type() == VIDEO);
+ _play_button->Show (_film->content_type() == VIDEO);
+ _v_sizer->Layout ();
+ break;
}
-
- void set_film (Film* f)
- {
- _film = f;
- if (!_film) {
- clear ();
- _frame_rebuild_needed = true;
- Refresh ();
- } else {
- _frame_rebuild_needed = true;
- Refresh ();
- }
+ case Film::WITH_SUBTITLES:
+ case Film::SUBTITLE_OFFSET:
+ case Film::SUBTITLE_SCALE:
+ case Film::SCALER:
+ update_from_raw ();
+ break;
+ case Film::SUBTITLE_STREAM:
+ _decoders.video->set_subtitle_stream (_film->subtitle_stream ());
+ break;
+ default:
+ break;
}
+}
- /** Clear our thumbnail image */
- void clear ()
- {
- _bitmap.reset ();
- _image.reset ();
- _subtitles.clear ();
+void
+FilmViewer::set_film (shared_ptr<Film> f)
+{
+ if (_film == f) {
+ return;
}
+
+ _film = f;
- void recompose ()
- {
- _composition_needed = true;
- Refresh ();
+ if (!_film) {
+ return;
}
- DECLARE_EVENT_TABLE ();
-
-private:
-
- void compose ()
- {
- if (!_film || !_image) {
- return;
- }
-
- /* Size of the view */
- int vw, vh;
- GetSize (&vw, &vh);
-
- /* Cropped rectangle */
- Rectangle cropped_area (
- _film->crop().left,
- _film->crop().top,
- _image->GetWidth() - (_film->crop().left + _film->crop().right),
- _image->GetHeight() - (_film->crop().top + _film->crop().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.w, cropped_area.h));
+ _film->Changed.connect (boost::bind (&FilmViewer::film_changed, this, _1));
- float x_scale = 1;
- float y_scale = 1;
+ 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);
+ film_changed (Film::SUBTITLE_STREAM);
+}
- 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.w;
- y_scale = float (vh) / cropped_area.h;
- } 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.w;
- y_scale = (vw / target) / cropped_area.h;
- }
+void
+FilmViewer::decoder_changed ()
+{
+ if (_decoders.video->seek_to_last ()) {
+ return;
+ }
- _bitmap.reset (new wxBitmap (_transformed_image));
+ get_frame ();
+ _panel->Refresh ();
+ _panel->Update ();
+}
- for (list<SubtitleView>::iterator i = _subtitles.begin(); i != _subtitles.end(); ++i) {
+void
+FilmViewer::timer (wxTimerEvent &)
+{
+ if (!_film) {
+ return;
+ }
+
+ _panel->Refresh ();
+ _panel->Update ();
- SubtitleTransform tx = subtitle_transform (
- _image->GetWidth(), _image->GetHeight(),
- x_scale, y_scale,
- i->base_position, i->base_image.GetWidth(), i->base_image.GetHeight(),
- _film->state_copy()
- );
+ get_frame ();
- i->transformed_image = i->base_image.GetSubImage (wxRect (tx.crop.x, tx.crop.y, tx.crop.w, tx.crop.h));
- i->transformed_image.Rescale (tx.transformed.w, tx.transformed.h, wxIMAGE_QUALITY_HIGH);
- i->transformed_position = Position (tx.transformed.x, tx.transformed.y);
- i->bitmap.reset (new wxBitmap (i->transformed_image));
+ if (_film->length()) {
+ int const new_slider_position = 4096 * _decoders.video->last_source_time() / (_film->length().get() / _film->frames_per_second());
+ if (new_slider_position != _slider->GetValue()) {
+ _slider->SetValue (new_slider_position);
}
}
+}
- 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_position (p)
- , base_image (i)
- {}
-
- Position base_position;
- Position transformed_position;
- wxImage base_image;
- wxImage transformed_image;
- shared_ptr<wxBitmap> bitmap;
- };
-
- list<SubtitleView> _subtitles;
-};
-
-BEGIN_EVENT_TABLE (ThumbPanel, wxPanel)
-EVT_PAINT (ThumbPanel::paint_event)
-EVT_SIZE (ThumbPanel::size_event)
-END_EVENT_TABLE ()
-
-FilmViewer::FilmViewer (Film* f, wxWindow* p)
- : wxPanel (p)
- , _film (0)
+void
+FilmViewer::paint_panel (wxPaintEvent &)
{
- _sizer = new wxBoxSizer (wxVERTICAL);
- SetSizer (_sizer);
-
- _thumb_panel = new ThumbPanel (this, f);
- _sizer->Add (_thumb_panel, 1, wxEXPAND);
+ wxPaintDC dc (_panel);
- int const max = f ? f->num_thumbs() - 1 : 0;
- _slider = new wxSlider (this, wxID_ANY, 0, 0, max);
- _sizer->Add (_slider, 0, wxEXPAND | wxLEFT | wxRIGHT);
- set_thumbnail (0);
+ if (_clear_required) {
+ dc.Clear ();
+ _clear_required = false;
+ }
- _slider->Connect (wxID_ANY, wxEVT_COMMAND_SLIDER_UPDATED, wxCommandEventHandler (FilmViewer::slider_changed), 0, this);
+ if (!_display_frame || !_film || !_out_width || !_out_height) {
+ dc.Clear ();
+ return;
+ }
+
+ wxImage frame (_out_width, _out_height, _display_frame->data()[0], true);
+ wxBitmap frame_bitmap (frame);
+ dc.DrawBitmap (frame_bitmap, 0, 0);
- set_film (_film);
+ 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);
+ }
}
+
void
-FilmViewer::set_thumbnail (int n)
+FilmViewer::slider_moved (wxScrollEvent &)
{
- if (_film == 0 || _film->num_thumbs() <= n) {
+ if (!_film || !_film->length()) {
return;
}
-
- _thumb_panel->set (n);
+
+ if (_decoders.video->seek (_slider->GetValue() * _film->length().get() / (4096 * _film->frames_per_second()))) {
+ return;
+ }
+
+ get_frame ();
+ _panel->Refresh ();
+ _panel->Update ();
}
void
-FilmViewer::slider_changed (wxCommandEvent &)
+FilmViewer::panel_sized (wxSizeEvent& ev)
{
- set_thumbnail (_slider->GetValue ());
+ _panel_width = ev.GetSize().GetWidth();
+ _panel_height = ev.GetSize().GetHeight();
+ calculate_sizes ();
+ update_from_raw ();
}
void
-FilmViewer::film_changed (Film::Property p)
+FilmViewer::update_from_raw ()
{
- switch (p) {
- case Film::THUMBS:
- if (_film && _film->num_thumbs() > 1) {
- _slider->SetRange (0, _film->num_thumbs () - 1);
- } else {
- _thumb_panel->clear ();
- _slider->SetRange (0, 1);
- }
-
- _slider->SetValue (0);
- set_thumbnail (0);
- break;
- case Film::CONTENT:
- setup_visibility ();
- _film->examine_content ();
- update_thumbs ();
- 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 (!_raw_frame) {
+ return;
}
+
+ raw_to_display ();
+
+ _panel->Refresh ();
+ _panel->Update ();
}
void
-FilmViewer::set_film (Film* f)
+FilmViewer::raw_to_display ()
{
- if (_film == f) {
+ if (!_raw_frame || _out_width < 64 || _out_height < 64 || !_film) {
return;
}
-
- _film = f;
- _thumb_panel->set_film (_film);
+ Size old_size;
+ if (_display_frame) {
+ old_size = _display_frame->size();
+ }
+
+ /* Get a compacted image as we have to feed it to wxWidgets */
+ _display_frame = _raw_frame->scale_and_convert_to_rgb (Size (_out_width, _out_height), 0, _film->scaler(), false);
+
+ if (old_size != _display_frame->size()) {
+ _clear_required = true;
+ }
+
+ if (_raw_sub) {
+ Rect tx = subtitle_transformed_area (
+ float (_out_width) / _film->size().width,
+ float (_out_height) / _film->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();
+ } else {
+ _display_sub.reset ();
+ }
+}
+
+void
+FilmViewer::calculate_sizes ()
+{
if (!_film) {
return;
}
+
+ 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 (panel_ratio < film_ratio) {
+ /* panel is less widscreen than the film; clamp width */
+ _out_width = _panel_width;
+ _out_height = _out_width / film_ratio;
+ } else {
+ /* panel is more widescreen than the film; clamp heignt */
+ _out_height = _panel_height;
+ _out_width = _out_height * film_ratio;
+ }
+}
- _film->Changed.connect (sigc::mem_fun (*this, &FilmViewer::film_changed));
- film_changed (Film::CROP);
- film_changed (Film::THUMBS);
- setup_visibility ();
+void
+FilmViewer::play_clicked (wxCommandEvent &)
+{
+ check_play_state ();
}
void
-FilmViewer::update_thumbs ()
+FilmViewer::check_play_state ()
{
if (!_film) {
return;
}
+
+ if (_play_button->GetValue()) {
+ _timer.Start (1000 / _film->frames_per_second());
+ } else {
+ _timer.Stop ();
+ }
+}
- _film->update_thumbs_pre_gui ();
+void
+FilmViewer::process_video (shared_ptr<Image> image, bool, shared_ptr<Subtitle> sub)
+{
+ _raw_frame = image;
+ _raw_sub = sub;
- shared_ptr<const FilmState> s = _film->state_copy ();
- shared_ptr<Options> o (new Options (s->dir ("thumbs"), ".png", ""));
- o->out_size = _film->size ();
- o->apply_crop = false;
- o->decode_audio = false;
- o->decode_video_frequency = 128;
-
- shared_ptr<Job> j (new ThumbsJob (s, o, _film->log(), shared_ptr<Job> ()));
- j->Finished.connect (sigc::mem_fun (_film, &Film::update_thumbs_post_gui));
- JobManager::instance()->add (j);
+ raw_to_display ();
+
+ _got_frame = true;
}
void
-FilmViewer::setup_visibility ()
+FilmViewer::get_frame ()
{
- if (!_film) {
- return;
+ /* Clear our raw frame in case we don't get a new one */
+ _raw_frame.reset ();
+
+ try {
+ _got_frame = false;
+ while (!_got_frame) {
+ if (_decoders.video->pass ()) {
+ /* We didn't get a frame before the decoder gave up,
+ so clear our display frame.
+ */
+ _display_frame.reset ();
+ break;
+ }
+ }
+ } catch (DecodeError& e) {
+ error_dialog (this, String::compose ("Could not decode video for view (%1)", e.what()));
}
+}
- ContentType const c = _film->content_type ();
- _slider->Show (c == VIDEO);
+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);
}
+