*/
/** @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")))
+ , _display_frame_x (0)
+ , _got_frame (false)
+ , _clear_required (false)
{
-public:
- ThumbPanel (wxPanel* parent, Film* film)
- : wxPanel (parent)
- , _film (film)
- , _image (0)
- , _bitmap (0)
- {
- }
+ _panel->SetDoubleBuffered (true);
+#if wxMAJOR_VERSION == 2 && wxMINOR_VERSION >= 9
+ _panel->SetBackgroundStyle (wxBG_STYLE_PAINT);
+#endif
+
+ _v_sizer = new wxBoxSizer (wxVERTICAL);
+ SetSizer (_v_sizer);
- void paint_event (wxPaintEvent& ev)
- {
- if (_current_image != _pending_image) {
- delete _image;
- _image = new wxImage (std_to_wx (_pending_image));
- _current_image = _pending_image;
- setup ();
- }
+ _v_sizer->Add (_panel, 1, wxEXPAND);
- if (_current_crop != _pending_crop) {
- _current_crop = _pending_crop;
- setup ();
- }
+ 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);
- void size_event (wxSizeEvent &)
- {
- if (!_image) {
- return;
- }
+ _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);
- setup ();
- Refresh ();
- }
+ set_film (f);
- void set (string f)
- {
- _pending_image = f;
- Refresh ();
- }
+ JobManager::instance()->ActiveJobsChanged.connect (
+ bind (&FilmViewer::active_jobs_changed, this, _1)
+ );
+}
- void set_crop (Crop c)
+void
+FilmViewer::film_changed (Film::Property p)
+{
+ switch (p) {
+ case Film::FORMAT:
+ calculate_sizes ();
+ update_from_raw ();
+ break;
+ case Film::CONTENT:
{
- _pending_crop = c;
- 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;
+ }
+ 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;
}
+}
- void set_film (Film* f)
- {
- _film = f;
- if (!_film) {
- clear ();
- Refresh ();
- } else {
- setup ();
- Refresh ();
- }
+void
+FilmViewer::set_film (shared_ptr<Film> f)
+{
+ if (_film == f) {
+ return;
}
+
+ _film = f;
- void clear ()
- {
- delete _bitmap;
- _bitmap = 0;
- delete _image;
- _image = 0;
+ if (!_film) {
+ return;
}
- void refresh ()
- {
- setup ();
- Refresh ();
+ _film->Changed.connect (boost::bind (&FilmViewer::film_changed, this, _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);
+}
+
+void
+FilmViewer::decoder_changed ()
+{
+ if (_decoders.video->seek_to_last ()) {
+ return;
}
- DECLARE_EVENT_TABLE ();
+ get_frame ();
+ _panel->Refresh ();
+ _panel->Update ();
+}
-private:
+void
+FilmViewer::timer (wxTimerEvent &)
+{
+ if (!_film) {
+ return;
+ }
+
+ _panel->Refresh ();
+ _panel->Update ();
- void setup ()
- {
- if (!_film || !_image) {
- return;
- }
-
- int vw, vh;
- GetSize (&vw, &vh);
-
- float const target = _film->format() ? _film->format()->ratio_as_float () : 1.78;
-
- _cropped_image = _image->GetSubImage (
- wxRect (
- _current_crop.left,
- _current_crop.top,
- _image->GetWidth() - (_current_crop.left + _current_crop.right),
- _image->GetHeight() - (_current_crop.top + _current_crop.bottom)
- )
- );
+ get_frame ();
- if ((float (vw) / vh) > target) {
- /* view is longer (horizontally) than the ratio; fit height */
- _cropped_image.Rescale (vh * target, vh, wxIMAGE_QUALITY_HIGH);
- } else {
- /* view is shorter (horizontally) than the ratio; fit width */
- _cropped_image.Rescale (vw, vw / target, wxIMAGE_QUALITY_HIGH);
+ 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);
}
-
- delete _bitmap;
- _bitmap = new wxBitmap (_cropped_image);
}
+}
- Film* _film;
- wxImage* _image;
- std::string _current_image;
- std::string _pending_image;
- wxImage _cropped_image;
- wxBitmap* _bitmap;
- Crop _current_crop;
- Crop _pending_crop;
-};
-
-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 (f)
+
+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_size.width || !_out_size.height) {
+ dc.Clear ();
+ return;
+ }
+
+ 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 * 2 + _film_size.width, _film_size.height);
+ }
- set_film (_film);
+ 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);
+
+ 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 (_film->thumb_file(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_size.width = ev.GetSize().GetWidth();
+ _panel_size.height = ev.GetSize().GetHeight();
+ calculate_sizes ();
+ update_from_raw ();
}
void
-FilmViewer::film_changed (Film::Property p)
+FilmViewer::update_from_raw ()
{
- if (p == Film::CROP) {
- _thumb_panel->set_crop (_film->crop ());
- } else if (p == 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);
- _thumb_panel->refresh ();
- } else if (p == Film::FORMAT) {
- _thumb_panel->refresh ();
- } else if (p == Film::CONTENT) {
- setup_visibility ();
- _film->examine_content ();
- update_thumbs ();
+ if (!_raw_frame) {
+ return;
}
+
+ raw_to_display ();
+
+ _panel->Refresh ();
+ _panel->Update ();
}
void
-FilmViewer::set_film (Film* f)
+FilmViewer::raw_to_display ()
{
- _film = f;
- _thumb_panel->set_film (_film);
+ if (!_raw_frame || _out_size.width < 64 || _out_size.height < 64 || !_film) {
+ return;
+ }
+
+ libdcp::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 (_film_size, 0, _film->scaler(), false);
+
+ if (old_size != _display_frame->size()) {
+ _clear_required = true;
+ }
+ if (_raw_sub) {
+ Rect tx = subtitle_transformed_area (
+ float (_film_size.width) / _film->size().width,
+ float (_film_size.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();
+ _display_sub_position.x += _display_frame_x;
+ } else {
+ _display_sub.reset ();
+ }
+}
+
+void
+FilmViewer::calculate_sizes ()
+{
if (!_film) {
return;
}
- _film->Changed.connect (sigc::mem_fun (*this, &FilmViewer::film_changed));
- film_changed (Film::THUMBS);
- _thumb_panel->refresh ();
- setup_visibility ();
+ 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::update_thumbs ()
+FilmViewer::play_clicked (wxCommandEvent &)
+{
+ check_play_state ();
+}
+
+void
+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"), ".tiff", ""));
- 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 ()));
- 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);
}
+
projects / dcpomatic.git / blobdiff