+/*
+ Copyright (C) 2012 Carl Hetherington <cth@carlh.net>
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+/** @file src/film_viewer.cc
+ * @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 "film_viewer.h"
+#include "wx_util.h"
+#include "video_decoder.h"
-using namespace std;
+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, _("Play")))
+ , _display_frame_x (0)
+ , _got_frame (false)
+ , _clear_required (false)
{
-public:
- ThumbPanel (wxFrame* parent)
- : wxPanel (parent)
- , _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);
+
+ _v_sizer->Add (_panel, 1, wxEXPAND);
- void paint_event (wxPaintEvent& ev)
+ 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 | 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);
+
+ set_film (f);
+
+ JobManager::instance()->ActiveJobsChanged.connect (
+ bind (&FilmViewer::active_jobs_changed, this, _1)
+ );
+}
+
+void
+FilmViewer::film_changed (Film::Property p)
+{
+ switch (p) {
+ case Film::FORMAT:
+ calculate_sizes ();
+ update_from_raw ();
+ break;
+ case Film::CONTENT:
{
- if (!_bitmap) {
+ DecodeOptions o;
+ o.decode_audio = false;
+ o.decode_subtitles = true;
+ o.video_sync = false;
+
+ try {
+ _decoders = decoder_factory (_film, o);
+ } catch (StringError& e) {
+ error_dialog (this, wxString::Format (_("Could not open content file (%s)"), e.what()));
return;
}
+
+ if (_decoders.video == 0) {
+ break;
+ }
+ _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:
+ case Film::FILTERS:
+ update_from_raw ();
+ break;
+ case Film::SUBTITLE_STREAM:
+ if (_decoders.video) {
+ _decoders.video->set_subtitle_stream (_film->subtitle_stream ());
+ }
+ break;
+ default:
+ break;
+ }
+}
+
+void
+FilmViewer::set_film (shared_ptr<Film> f)
+{
+ if (_film == f) {
+ return;
+ }
+
+ _film = f;
+
+ if (!_film) {
+ return;
+ }
+
+ _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);
+ film_changed (Film::SUBTITLE_STREAM);
+}
+
+void
+FilmViewer::decoder_changed ()
+{
+ if (_decoders.video == 0 || _decoders.video->seek_to_last ()) {
+ return;
+ }
+
+ get_frame ();
+ _panel->Refresh ();
+ _panel->Update ();
+}
+
+void
+FilmViewer::timer (wxTimerEvent &)
+{
+ if (!_film || !_decoders.video) {
+ return;
+ }
+
+ _panel->Refresh ();
+ _panel->Update ();
+
+ get_frame ();
+
+ if (_film->length()) {
+ int const new_slider_position = 4096 * _decoders.video->last_source_time() / (_film->length().get() / _film->source_frame_rate());
+ if (new_slider_position != _slider->GetValue()) {
+ _slider->SetValue (new_slider_position);
+ }
+ }
+}
+
+
+void
+FilmViewer::paint_panel (wxPaintEvent &)
+{
+ wxPaintDC dc (_panel);
+
+ if (_clear_required) {
+ dc.Clear ();
+ _clear_required = false;
+ }
+
+ 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, _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);
+
+ 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);
+ }
+}
- cout << "RENDER\n";
+
+void
+FilmViewer::slider_moved (wxScrollEvent &)
+{
+ if (!_film || !_film->length() || !_decoders.video) {
+ return;
+ }
+
+ if (_decoders.video->seek (_slider->GetValue() * _film->length().get() / (4096 * _film->source_frame_rate()))) {
+ return;
+ }
+
+ get_frame ();
+ _panel->Refresh ();
+ _panel->Update ();
+}
+
+void
+FilmViewer::panel_sized (wxSizeEvent& ev)
+{
+ _panel_size.width = ev.GetSize().GetWidth();
+ _panel_size.height = ev.GetSize().GetHeight();
+ calculate_sizes ();
+ update_from_raw ();
+}
+
+void
+FilmViewer::update_from_raw ()
+{
+ if (!_raw_frame) {
+ return;
+ }
+
+ 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;
+ }
+
+ libdcp::Size old_size;
+ if (_display_frame) {
+ old_size = _display_frame->size();
+ }
+
+ boost::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 (old_size != _display_frame->size()) {
+ _clear_required = true;
+ }
+
+ 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->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()
+ );
- wxPaintDC dc (this);
- dc.DrawBitmap (*_bitmap, 0, 0, false);
+ _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 set_bitmap (wxBitmap* bitmap)
- {
- _bitmap = bitmap;
+void
+FilmViewer::calculate_sizes ()
+{
+ if (!_film) {
+ return;
}
- DECLARE_EVENT_TABLE ();
+ 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;
+ }
-private:
- wxBitmap* _bitmap;
-};
+ /* 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;
+ }
-BEGIN_EVENT_TABLE (ThumbPanel, wxPanel)
-EVT_PAINT (ThumbPanel::paint_event)
-END_EVENT_TABLE ()
+ _film_size = _out_size;
+ _film_size.width -= _display_frame_x * 2;
-FilmViewer::FilmViewer (Film* f, wxFrame* p)
- : _film (f)
- , _image (0)
- , _scaled_image (0)
- , _bitmap (0)
+ /* Catch silly values */
+ if (_out_size.width < 64) {
+ _out_size.width = 64;
+ }
+}
+
+void
+FilmViewer::play_clicked (wxCommandEvent &)
{
- _thumb_panel = new ThumbPanel (p);
- _thumb_panel->Show (true);
- int x, y;
- _thumb_panel->GetSize (&x, &y);
- cout << x << " " << y << "\n";
+ check_play_state ();
}
void
-FilmViewer::load_thumbnail (int n)
+FilmViewer::check_play_state ()
{
- if (_film == 0 && _film->num_thumbs() <= n) {
+ if (!_film) {
return;
}
+
+ if (_play_button->GetValue()) {
+ _timer.Start (1000 / _film->source_frame_rate());
+ } else {
+ _timer.Stop ();
+ }
+}
+
+void
+FilmViewer::process_video (shared_ptr<Image> image, bool, shared_ptr<Subtitle> sub)
+{
+ _raw_frame = image;
+ _raw_sub = sub;
- _image = new wxImage (wxString (_film->thumb_file(n).c_str (), wxConvUTF8));
- _scaled_image = new wxImage (_image->Scale (512, 512));
- _bitmap = new wxBitmap (*_scaled_image);
- _thumb_panel->set_bitmap (_bitmap);
+ raw_to_display ();
+
+ _got_frame = true;
+}
+
+void
+FilmViewer::get_frame ()
+{
+ /* Clear our raw frame in case we don't get a new one */
+ _raw_frame.reset ();
+
+ if (_decoders.video == 0) {
+ _display_frame.reset ();
+ return;
+ }
+
+ 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) {
+ _play_button->SetValue (false);
+ check_play_state ();
+ error_dialog (this, wxString::Format (_("Could not decode video for view (%s)"), e.what()));
+ }
}
-wxPanel *
-FilmViewer::get_widget ()
+void
+FilmViewer::active_jobs_changed (bool a)
{
- return _thumb_panel;
+ 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