2 Copyright (C) 2019-2021 Carl Hetherington <cth@carlh.net>
4 This file is part of DCP-o-matic.
6 DCP-o-matic is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 DCP-o-matic is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with DCP-o-matic. If not, see <http://www.gnu.org/licenses/>.
22 #include "closed_captions_dialog.h"
23 #include "film_viewer.h"
24 #include "simple_video_view.h"
26 #include "lib/butler.h"
27 #include "lib/dcpomatic_log.h"
28 #include "lib/image.h"
31 #include <boost/bind/bind.hpp>
35 using std::shared_ptr;
38 using boost::optional;
39 #if BOOST_VERSION >= 106100
40 using namespace boost::placeholders;
42 using namespace dcpomatic;
45 SimpleVideoView::SimpleVideoView (FilmViewer* viewer, wxWindow* parent)
48 _panel = new wxPanel (parent);
51 _panel->SetDoubleBuffered (true);
54 _panel->SetBackgroundStyle (wxBG_STYLE_PAINT);
55 _panel->SetBackgroundColour (*wxBLACK);
57 _panel->Bind (wxEVT_PAINT, boost::bind (&SimpleVideoView::paint, this));
58 _panel->Bind (wxEVT_SIZE, boost::bind(boost::ref(Sized)));
60 _timer.Bind (wxEVT_TIMER, boost::bind(&SimpleVideoView::timer, this));
65 SimpleVideoView::paint ()
67 _state_timer.set("paint-panel");
68 wxPaintDC dc (_panel);
69 auto scale = 1 / dpi_scale_factor (_panel);
70 dc.SetLogicalScale (scale, scale);
72 auto const panel_size = _panel->GetSize ();
78 DCPOMATIC_ASSERT (_image->alignment() == Image::Alignment::COMPACT);
79 out_size = _image->size();
80 wxImage frame (out_size.width, out_size.height, _image->data()[0], true);
81 wxBitmap frame_bitmap (frame);
82 dc.DrawBitmap (frame_bitmap, 0, max(0, (panel_size.GetHeight() - out_size.height) / 2));
85 auto pad = pad_colour();
87 if (out_size.width < panel_size.GetWidth()) {
92 dc.DrawRectangle (out_size.width, 0, panel_size.GetWidth() - out_size.width, panel_size.GetHeight());
95 if (out_size.height < panel_size.GetHeight()) {
100 int const gap = (panel_size.GetHeight() - out_size.height) / 2;
101 dc.DrawRectangle (0, 0, panel_size.GetWidth(), gap);
102 dc.DrawRectangle (0, gap + out_size.height + 1, panel_size.GetWidth(), gap + 1);
105 if (_viewer->outline_content()) {
106 wxPen p (outline_content_colour(), 2);
108 dc.SetBrush (*wxTRANSPARENT_BRUSH);
109 dc.DrawRectangle (_inter_position.x, _inter_position.y + (panel_size.GetHeight() - out_size.height) / 2, _inter_size.width, _inter_size.height);
112 auto subs = _viewer->outline_subtitles();
114 wxPen p (outline_subtitles_colour(), 2);
116 dc.SetBrush (*wxTRANSPARENT_BRUSH);
117 dc.DrawRectangle (subs->x * out_size.width, subs->y * out_size.height, subs->width * out_size.width, subs->height * out_size.height);
120 _state_timer.unset();
125 SimpleVideoView::refresh_panel ()
127 _state_timer.set ("refresh-panel");
130 _state_timer.unset ();
135 SimpleVideoView::timer ()
137 if (!_viewer->playing()) {
141 display_next_frame (false);
142 auto const next = position() + _viewer->one_video_frame();
144 if (next >= length()) {
145 _viewer->finished ();
149 LOG_DEBUG_VIDEO_VIEW("%1 -> %2; delay %3", next.seconds(), _viewer->time().seconds(), max((next.seconds() - _viewer->time().seconds()) * 1000, 1.0));
150 _timer.Start (max(1, time_until_next_frame().get_value_or(0)), wxTIMER_ONE_SHOT);
152 if (_viewer->butler()) {
153 _viewer->butler()->rethrow ();
159 SimpleVideoView::start ()
166 /** Try to get a frame from the butler and display it.
167 * @param non_blocking true to return false quickly if no video is available quickly (i.e. we are waiting for the butler).
168 * false to ask the butler to block until it has video (unless it is suspended).
169 * @return true on success, false if we did nothing because it would have taken too long.
171 VideoView::NextFrameResult
172 SimpleVideoView::display_next_frame (bool non_blocking)
174 auto const r = get_next_frame (non_blocking);
182 _viewer->butler()->rethrow ();
183 } catch (DecodeError& e) {
184 error_dialog (get(), e.what());
192 SimpleVideoView::update ()
194 if (!player_video().first) {
200 if (_viewer->playing() && (_viewer->time() - player_video().second) > one_video_frame()) {
201 /* Too late; just drop this frame before we try to get its image (which will be the time-consuming
202 part if this frame is J2K).
208 /* In an ideal world, what we would do here is:
210 * 1. convert to XYZ exactly as we do in the DCP creation path.
211 * 2. convert back to RGB for the preview display, compensating
212 * for the monitor etc. etc.
214 * but this is inefficient if the source is RGB. Since we don't
215 * (currently) care too much about the precise accuracy of the preview's
216 * colour mapping (and we care more about its speed) we try to short-
217 * circuit this "ideal" situation in some cases.
219 * The content's specified colour conversion indicates the colourspace
220 * which the content is in (according to the user).
222 * PlayerVideo::image (bound to PlayerVideo::force) will take the source
223 * image and convert it (from whatever the user has said it is) to RGB.
226 _state_timer.set ("get image");
228 _image = player_video().first->image(bind(&PlayerVideo::force, AV_PIX_FMT_RGB24), VideoRange::FULL, true);
230 _state_timer.set ("ImageChanged");
231 _viewer->image_changed (player_video().first);
232 _state_timer.unset ();
234 _inter_position = player_video().first->inter_position ();
235 _inter_size = player_video().first->inter_size ();