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"
29 #include "lib/video_filter_graph.h"
30 #include "lib/video_filter_graph_set.h"
32 #include <dcp/warnings.h>
33 LIBDCP_DISABLE_WARNINGS
35 LIBDCP_ENABLE_WARNINGS
36 #include <boost/bind/bind.hpp>
40 using std::shared_ptr;
42 using boost::optional;
43 #if BOOST_VERSION >= 106100
44 using namespace boost::placeholders;
46 using namespace dcpomatic;
49 SimpleVideoView::SimpleVideoView (FilmViewer* viewer, wxWindow* parent)
51 , _rec2020_filter("convert", "convert", "", "colorspace=all=bt709:iall=bt2020")
52 , _rec2020_filter_graph({ _rec2020_filter }, dcp::Fraction(24, 1))
54 _panel = new wxPanel (parent);
57 _panel->SetDoubleBuffered (true);
60 _panel->SetBackgroundStyle (wxBG_STYLE_PAINT);
61 _panel->SetBackgroundColour (*wxBLACK);
63 _panel->Bind (wxEVT_PAINT, boost::bind (&SimpleVideoView::paint, this));
64 _panel->Bind (wxEVT_SIZE, boost::bind(boost::ref(Sized)));
66 _timer.Bind (wxEVT_TIMER, boost::bind(&SimpleVideoView::timer, this));
71 SimpleVideoView::paint ()
73 _state_timer.set("paint-panel");
74 wxPaintDC dc (_panel);
75 auto scale = 1 / dpi_scale_factor (_panel);
76 dc.SetLogicalScale (scale, scale);
78 auto const panel_size = _panel->GetSize ();
79 auto pad = pad_colour();
87 DCPOMATIC_ASSERT (_image->alignment() == Image::Alignment::COMPACT);
88 out_size = _image->size();
89 wxImage frame (out_size.width, out_size.height, _image->data()[0], true);
90 wxBitmap frame_bitmap (frame);
91 dc.DrawBitmap (frame_bitmap, 0, max(0, (panel_size.GetHeight() - out_size.height) / 2));
94 if (out_size.width < panel_size.GetWidth()) {
99 dc.DrawRectangle (out_size.width, 0, panel_size.GetWidth() - out_size.width, panel_size.GetHeight());
102 if (out_size.height < panel_size.GetHeight()) {
107 int const gap = (panel_size.GetHeight() - out_size.height) / 2;
108 dc.DrawRectangle (0, 0, panel_size.GetWidth(), gap);
109 dc.DrawRectangle (0, gap + out_size.height + 1, panel_size.GetWidth(), gap + 1);
112 if (_viewer->outline_content()) {
113 wxPen p (outline_content_colour(), 2);
115 dc.SetBrush (*wxTRANSPARENT_BRUSH);
116 dc.DrawRectangle (_inter_position.x, _inter_position.y + (panel_size.GetHeight() - out_size.height) / 2, _inter_size.width, _inter_size.height);
119 auto subs = _viewer->outline_subtitles();
121 wxPen p (outline_subtitles_colour(), 2);
123 dc.SetBrush (*wxTRANSPARENT_BRUSH);
124 dc.DrawRectangle (subs->x * out_size.width, subs->y * out_size.height, subs->width * out_size.width, subs->height * out_size.height);
127 if (_viewer->crop_guess()) {
128 wxPen p (crop_guess_colour(), 2);
130 dc.SetBrush (*wxTRANSPARENT_BRUSH);
131 auto const crop_guess = _viewer->crop_guess().get();
133 _inter_position.x + _inter_size.width * crop_guess.x,
134 _inter_position.y + _inter_size.height * crop_guess.y,
135 _inter_size.width * crop_guess.width,
136 _inter_size.height * crop_guess.height
140 _state_timer.unset();
145 SimpleVideoView::refresh_panel ()
147 _state_timer.set ("refresh-panel");
150 _state_timer.unset ();
155 SimpleVideoView::timer ()
157 if (!_viewer->playing()) {
161 display_next_frame (false);
162 auto const next = position() + _viewer->one_video_frame();
164 if (next >= length()) {
165 _viewer->finished ();
169 LOG_DEBUG_VIDEO_VIEW("%1 -> %2; delay %3", next.seconds(), _viewer->time().seconds(), max((next.seconds() - _viewer->time().seconds()) * 1000, 1.0));
170 _timer.Start (max(1, time_until_next_frame().get_value_or(0)), wxTIMER_ONE_SHOT);
172 if (_viewer->butler()) {
174 _viewer->butler()->rethrow();
175 } catch (dcp::FileError& e) {
176 error_dialog(_panel, _("Could not play content"), std_to_wx(e.what()));
183 SimpleVideoView::start ()
190 /** Try to get a frame from the butler and display it.
191 * @param non_blocking true to return false quickly if no video is available quickly (i.e. we are waiting for the butler).
192 * false to ask the butler to block until it has video (unless it is suspended).
193 * @return true on success, false if we did nothing because it would have taken too long.
195 VideoView::NextFrameResult
196 SimpleVideoView::display_next_frame (bool non_blocking)
198 auto const r = get_next_frame (non_blocking);
206 _viewer->butler()->rethrow ();
207 } catch (DecodeError& e) {
208 error_dialog (get(), e.what());
216 SimpleVideoView::update ()
218 if (!player_video().first) {
224 if (_viewer->playing() && (_viewer->time() - player_video().second) > one_video_frame()) {
225 /* Too late; just drop this frame before we try to get its image (which will be the time-consuming
226 part if this frame is J2K).
232 /* In an ideal world, what we would do here is:
234 * 1. convert to XYZ exactly as we do in the DCP creation path.
235 * 2. convert back to RGB for the preview display, compensating
236 * for the monitor etc. etc.
238 * but this is inefficient if the source is RGB. Since we don't
239 * (currently) care too much about the precise accuracy of the preview's
240 * colour mapping (and we care more about its speed) we try to short-
241 * circuit this "ideal" situation in some cases.
243 * The content's specified colour conversion indicates the colourspace
244 * which the content is in (according to the user).
246 * PlayerVideo::image (bound to PlayerVideo::force) will take the source
247 * image and convert it (from whatever the user has said it is) to RGB.
250 _state_timer.set ("get image");
252 auto const pv = player_video();
253 _image = pv.first->image(boost::bind(&PlayerVideo::force, AV_PIX_FMT_RGB24), VideoRange::FULL, true);
254 if (pv.first->colour_conversion() && pv.first->colour_conversion()->about_equal(dcp::ColourConversion::rec2020_to_xyz(), 1e-6)) {
255 _image = Image::ensure_alignment(_rec2020_filter_graph.get(_image->size(), _image->pixel_format())->process(_image).front(), Image::Alignment::COMPACT);
258 _state_timer.set ("ImageChanged");
259 _viewer->image_changed (player_video().first);
260 _state_timer.unset ();
262 _inter_position = player_video().first->inter_position ();
263 _inter_size = player_video().first->inter_size ();