2 Copyright (C) 2016-2019 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/>.
25 #include "video_content.h"
26 #include "text_content.h"
27 #include "audio_processor.h"
30 #include "audio_analysis.h"
31 #include "compose.hpp"
35 #include <dcp/raw_convert.h>
36 #include <boost/foreach.hpp>
37 #include <boost/algorithm/string.hpp>
48 using boost::shared_ptr;
49 using boost::weak_ptr;
50 using boost::optional;
52 #if BOOST_VERSION >= 106100
53 using namespace boost::placeholders;
56 Hints::Hints (weak_ptr<const Film> film)
60 , _overlap_ccap (false)
61 , _too_many_ccap_lines (false)
70 _thread = new boost::thread (bind(&Hints::thread, this));
81 boost::mutex::scoped_lock lm (_mutex);
84 _thread->interrupt ();
96 shared_ptr<const Film> film = _film.lock ();
101 ContentList content = film->content ();
103 bool big_font_files = false;
104 if (film->interop ()) {
105 BOOST_FOREACH (shared_ptr<Content> i, content) {
106 BOOST_FOREACH (shared_ptr<TextContent> j, i->text) {
107 BOOST_FOREACH (shared_ptr<Font> k, j->fonts()) {
108 optional<boost::filesystem::path> const p = k->file ();
109 if (p && boost::filesystem::file_size(p.get()) >= (640 * 1024)) {
110 big_font_files = true;
117 if (big_font_files) {
118 hint (_("You have specified a font file which is larger than 640kB. This is very likely to cause problems on playback."));
121 if (film->audio_channels() < 6) {
122 hint (_("Your DCP has fewer than 6 audio channels. This may cause problems on some projectors."));
125 AudioProcessor const * ap = film->audio_processor();
126 if (ap && (ap->id() == "stereo-5.1-upmix-a" || ap->id() == "stereo-5.1-upmix-b")) {
127 hint (_("You are using DCP-o-matic's stereo-to-5.1 upmixer. This is experimental and may result in poor-quality audio. If you continue, you should listen to the resulting DCP in a cinema to make sure that it sounds good."));
130 int narrower_than_scope = 0;
132 BOOST_FOREACH (shared_ptr<const Content> i, content) {
134 Ratio const * r = i->video->scale().ratio ();
135 if (r && r->id() == "239") {
137 } else if (r && r->id() != "239" && r->id() != "190") {
138 ++narrower_than_scope;
143 string const film_container = film->container()->id();
145 if (scope && !narrower_than_scope && film_container == "185") {
146 hint (_("All of your content is in Scope (2.39:1) but your DCP's container is Flat (1.85:1). This will letter-box your content inside a Flat (1.85:1) frame. You may prefer to set your DCP's container to Scope (2.39:1) in the \"DCP\" tab."));
149 if (!scope && narrower_than_scope && film_container == "239") {
150 hint (_("All of your content is 2.35:1 or narrower but your DCP's container is Scope (2.39:1). This will pillar-box your content. You may prefer to set your DCP's container to have the same ratio as your content."));
153 if (film_container != "185" && film_container != "239" && film_container != "190") {
154 hint (_("Your DCP uses an unusual container ratio. This may cause problems on some projectors. If possible, use Flat or Scope for the DCP container ratio"));
157 if (film->j2k_bandwidth() >= 245000000) {
158 hint (_("A few projectors have problems playing back very high bit-rate DCPs. It is a good idea to drop the JPEG2000 bandwidth down to about 200Mbit/s; this is unlikely to have any visible effect on the image."));
161 switch (film->video_frame_rate()) {
167 /* You might want to go to 24 */
168 string base = String::compose(_("You are set up for a DCP at a frame rate of %1 fps. This frame rate is not supported by all projectors. You may want to consider changing your frame rate to %2 fps."), 25, 24);
169 if (film->interop()) {
171 base += _("If you do use 25fps you should change your DCP standard to SMPTE.");
177 /* 30fps: we can't really offer any decent solutions */
178 hint (_("You are set up for a DCP frame rate of 30fps, which is not supported by all projectors. Be aware that you may have compatibility problems."));
183 /* You almost certainly want to go to half frame rate */
184 hint (String::compose(_("You are set up for a DCP at a frame rate of %1 fps. This frame rate is not supported by all projectors. You are advised to change the DCP frame rate to %2 fps."), film->video_frame_rate(), film->video_frame_rate() / 2));
188 optional<double> lowest_speed_up;
189 optional<double> highest_speed_up;
190 BOOST_FOREACH (shared_ptr<const Content> i, content) {
191 double spu = film->active_frame_rate_change(i->position()).speed_up;
192 if (!lowest_speed_up || spu < *lowest_speed_up) {
193 lowest_speed_up = spu;
195 if (!highest_speed_up || spu > *highest_speed_up) {
196 highest_speed_up = spu;
200 double worst_speed_up = 1;
201 if (highest_speed_up) {
202 worst_speed_up = *highest_speed_up;
204 if (lowest_speed_up) {
205 worst_speed_up = max (worst_speed_up, 1 / *lowest_speed_up);
208 if (worst_speed_up > 25.5/24.0) {
209 hint (_("There is a large difference between the frame rate of your DCP and that of some of your content. This will cause your audio to play back at a much lower or higher pitch than it should. You are advised to set your DCP frame rate to one closer to your content, provided that your target projection systems support your chosen DCP rate."));
213 BOOST_FOREACH (shared_ptr<const Content> i, content) {
214 if (boost::algorithm::starts_with (i->path(0).filename().string(), "VTS_")) {
220 hint (String::compose (_("You have %1 files that look like they are VOB files from DVD. You should join them to ensure smooth joins between the files."), vob));
224 BOOST_FOREACH (shared_ptr<const Content> i, content) {
225 if (i->video && i->video->frame_type() != VIDEO_FRAME_TYPE_2D) {
230 if (three_d > 0 && !film->three_d()) {
231 hint (_("You are using 3D content but your DCP is set to 2D. Set the DCP to 3D if you want to play it back on a 3D system (e.g. Real-D, MasterImage etc.)"));
234 boost::filesystem::path path = film->audio_analysis_path (film->playlist ());
235 if (boost::filesystem::exists (path)) {
237 shared_ptr<AudioAnalysis> an (new AudioAnalysis (path));
241 vector<AudioAnalysis::PeakTime> sample_peak = an->sample_peak ();
242 vector<float> true_peak = an->true_peak ();
244 for (size_t i = 0; i < sample_peak.size(); ++i) {
245 float const peak = max (sample_peak[i].peak, true_peak.empty() ? 0 : true_peak[i]);
246 float const peak_dB = 20 * log10 (peak) + an->gain_correction (film->playlist ());
248 ch += dcp::raw_convert<string> (short_audio_channel_name (i)) + ", ";
252 ch = ch.substr (0, ch.length() - 2);
255 hint (String::compose (
256 _("Your audio level is very high (on %1). You should reduce the gain of your audio content."),
261 } catch (OldFormatError& e) {
262 /* The audio analysis is too old to load in; just skip this hint as if
263 it had never been run.
268 emit (bind(boost::ref(Progress), _("Examining closed captions")));
270 shared_ptr<Player> player (new Player (film, film->playlist ()));
271 player->set_ignore_video ();
272 player->set_ignore_audio ();
273 player->Text.connect (bind(&Hints::text, this, _1, _2, _4));
275 struct timeval last_pulse;
276 gettimeofday (&last_pulse, 0);
278 while (!player->pass()) {
281 gettimeofday (&now, 0);
282 if ((seconds(now) - seconds(last_pulse)) > 1) {
284 boost::mutex::scoped_lock lm (_mutex);
289 emit (bind (boost::ref(Pulse)));
294 emit (bind(boost::ref(Finished)));
298 Hints::hint (string h)
300 emit(bind(boost::ref(Hint), h));
304 Hints::text (PlayerText text, TextType type, DCPTimePeriod period)
306 if (type != TEXT_CLOSED_CAPTION) {
310 int lines = text.string.size();
311 BOOST_FOREACH (StringText i, text.string) {
312 if (utf8_strlen(i.text()) > CLOSED_CAPTION_LENGTH) {
316 hint (String::compose(_("Some of your closed captions have lines longer than %1 characters, so they will probably be word-wrapped."), CLOSED_CAPTION_LENGTH));
321 if (!_too_many_ccap_lines && lines > CLOSED_CAPTION_LINES) {
322 hint (String::compose(_("Some of your closed captions span more than %1 lines, so they will be truncated."), CLOSED_CAPTION_LINES));
323 _too_many_ccap_lines = true;
326 shared_ptr<const Film> film = _film.lock ();
327 DCPOMATIC_ASSERT (film);
329 /* XXX: maybe overlapping closed captions (i.e. different languages) are OK with Interop? */
330 if (film->interop() && !_overlap_ccap && _last && _last->overlap(period)) {
331 _overlap_ccap = true;
332 hint (_("You have overlapping closed captions, which are not allowed in Interop DCPs. Change your DCP standard to SMPTE."));