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"
30 #include <dcp/warnings.h>
31 LIBDCP_DISABLE_WARNINGS
33 LIBDCP_ENABLE_WARNINGS
34 #include <boost/bind/bind.hpp>
38 using std::shared_ptr;
40 using boost::optional;
41 #if BOOST_VERSION >= 106100
42 using namespace boost::placeholders;
44 using namespace dcpomatic;
47 SimpleVideoView::SimpleVideoView (FilmViewer* viewer, wxWindow* parent)
50 _panel = new wxPanel (parent);
53 _panel->SetDoubleBuffered (true);
56 _panel->SetBackgroundStyle (wxBG_STYLE_PAINT);
57 _panel->SetBackgroundColour (*wxBLACK);
59 _panel->Bind (wxEVT_PAINT, boost::bind (&SimpleVideoView::paint, this));
60 _panel->Bind (wxEVT_SIZE, boost::bind(boost::ref(Sized)));
62 _timer.Bind (wxEVT_TIMER, boost::bind(&SimpleVideoView::timer, this));
67 SimpleVideoView::paint ()
69 _state_timer.set("paint-panel");
70 wxPaintDC dc (_panel);
71 auto scale = 1 / dpi_scale_factor (_panel);
72 dc.SetLogicalScale (scale, scale);
74 auto const panel_size = _panel->GetSize ();
75 auto pad = pad_colour();
83 DCPOMATIC_ASSERT (_image->alignment() == Image::Alignment::COMPACT);
84 out_size = _image->size();
85 wxImage frame (out_size.width, out_size.height, _image->data()[0], true);
86 wxBitmap frame_bitmap (frame);
87 dc.DrawBitmap (frame_bitmap, 0, max(0, (panel_size.GetHeight() - out_size.height) / 2));
90 if (out_size.width < panel_size.GetWidth()) {
95 dc.DrawRectangle (out_size.width, 0, panel_size.GetWidth() - out_size.width, panel_size.GetHeight());
98 if (out_size.height < panel_size.GetHeight()) {
103 int const gap = (panel_size.GetHeight() - out_size.height) / 2;
104 dc.DrawRectangle (0, 0, panel_size.GetWidth(), gap);
105 dc.DrawRectangle (0, gap + out_size.height + 1, panel_size.GetWidth(), gap + 1);
108 if (_viewer->outline_content()) {
109 wxPen p (outline_content_colour(), 2);
111 dc.SetBrush (*wxTRANSPARENT_BRUSH);
112 dc.DrawRectangle (_inter_position.x, _inter_position.y + (panel_size.GetHeight() - out_size.height) / 2, _inter_size.width, _inter_size.height);
115 auto subs = _viewer->outline_subtitles();
117 wxPen p (outline_subtitles_colour(), 2);
119 dc.SetBrush (*wxTRANSPARENT_BRUSH);
120 dc.DrawRectangle (subs->x * out_size.width, subs->y * out_size.height, subs->width * out_size.width, subs->height * out_size.height);
123 if (_viewer->crop_guess()) {
124 wxPen p (crop_guess_colour(), 2);
126 dc.SetBrush (*wxTRANSPARENT_BRUSH);
127 auto const crop_guess = _viewer->crop_guess().get();
129 _inter_position.x + _inter_size.width * crop_guess.x,
130 _inter_position.y + _inter_size.height * crop_guess.y,
131 _inter_size.width * crop_guess.width,
132 _inter_size.height * crop_guess.height
136 _state_timer.unset();
141 SimpleVideoView::refresh_panel ()
143 _state_timer.set ("refresh-panel");
146 _state_timer.unset ();
151 SimpleVideoView::timer ()
153 if (!_viewer->playing()) {
157 display_next_frame (false);
158 auto const next = position() + _viewer->one_video_frame();
160 if (next >= length()) {
161 _viewer->finished ();
165 LOG_DEBUG_VIDEO_VIEW("%1 -> %2; delay %3", next.seconds(), _viewer->time().seconds(), max((next.seconds() - _viewer->time().seconds()) * 1000, 1.0));
166 _timer.Start (max(1, time_until_next_frame().get_value_or(0)), wxTIMER_ONE_SHOT);
168 if (_viewer->butler()) {
169 _viewer->butler()->rethrow ();
175 SimpleVideoView::start ()
182 /** Try to get a frame from the butler and display it.
183 * @param non_blocking true to return false quickly if no video is available quickly (i.e. we are waiting for the butler).
184 * false to ask the butler to block until it has video (unless it is suspended).
185 * @return true on success, false if we did nothing because it would have taken too long.
187 VideoView::NextFrameResult
188 SimpleVideoView::display_next_frame (bool non_blocking)
190 auto const r = get_next_frame (non_blocking);
198 _viewer->butler()->rethrow ();
199 } catch (DecodeError& e) {
200 error_dialog (get(), e.what());
208 SimpleVideoView::update ()
210 if (!player_video().first) {
216 if (_viewer->playing() && (_viewer->time() - player_video().second) > one_video_frame()) {
217 /* Too late; just drop this frame before we try to get its image (which will be the time-consuming
218 part if this frame is J2K).
224 /* In an ideal world, what we would do here is:
226 * 1. convert to XYZ exactly as we do in the DCP creation path.
227 * 2. convert back to RGB for the preview display, compensating
228 * for the monitor etc. etc.
230 * but this is inefficient if the source is RGB. Since we don't
231 * (currently) care too much about the precise accuracy of the preview's
232 * colour mapping (and we care more about its speed) we try to short-
233 * circuit this "ideal" situation in some cases.
235 * The content's specified colour conversion indicates the colourspace
236 * which the content is in (according to the user).
238 * PlayerVideo::image (bound to PlayerVideo::force) will take the source
239 * image and convert it (from whatever the user has said it is) to RGB.
242 _state_timer.set ("get image");
244 _image = player_video().first->image(boost::bind(&PlayerVideo::force, AV_PIX_FMT_RGB24), VideoRange::FULL, true);
246 _state_timer.set ("ImageChanged");
247 _viewer->image_changed (player_video().first);
248 _state_timer.unset ();
250 _inter_position = player_video().first->inter_position ();
251 _inter_size = player_video().first->inter_size ();