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 using namespace dcpomatic;
54 Hints::Hints (weak_ptr<const Film> film)
57 , _overlap_ccap (false)
58 , _too_many_ccap_lines (false)
67 _thread = boost::thread (bind(&Hints::thread, this));
72 boost::this_thread::disable_interruption dis;
84 shared_ptr<const Film> film = _film.lock ();
89 ContentList content = film->content ();
91 bool big_font_files = false;
92 if (film->interop ()) {
93 BOOST_FOREACH (shared_ptr<Content> i, content) {
94 BOOST_FOREACH (shared_ptr<TextContent> j, i->text) {
95 BOOST_FOREACH (shared_ptr<Font> k, j->fonts()) {
96 optional<boost::filesystem::path> const p = k->file ();
97 if (p && boost::filesystem::file_size(p.get()) >= (640 * 1024)) {
98 big_font_files = true;
105 if (big_font_files) {
106 hint (_("You have specified a font file which is larger than 640kB. This is very likely to cause problems on playback."));
109 if (film->audio_channels() < 6) {
110 hint (_("Your DCP has fewer than 6 audio channels. This may cause problems on some projectors. You may want to set the DCP to have 6 channels. It does not matter if your content has fewer channels, as DCP-o-matic will fill the extras with silence."));
113 AudioProcessor const * ap = film->audio_processor();
114 if (ap && (ap->id() == "stereo-5.1-upmix-a" || ap->id() == "stereo-5.1-upmix-b")) {
115 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."));
118 int narrower_than_scope = 0;
120 BOOST_FOREACH (shared_ptr<const Content> i, content) {
122 Ratio const * r = Ratio::nearest_from_ratio(i->video->scaled_size(film->frame_size()).ratio());
123 if (r && r->id() == "239") {
125 } else if (r && r->id() != "239" && r->id() != "235" && r->id() != "190") {
126 ++narrower_than_scope;
131 string const film_container = film->container()->id();
133 if (scope && !narrower_than_scope && film_container == "185") {
134 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."));
137 if (!scope && narrower_than_scope && film_container == "239") {
138 hint (_("All of your content narrower than 1.90:1 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."));
141 if (film_container != "185" && film_container != "239" && film_container != "190") {
142 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"));
145 if (film->j2k_bandwidth() >= 245000000) {
146 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."));
149 switch (film->video_frame_rate()) {
155 /* You might want to go to 24 */
156 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);
157 if (film->interop()) {
159 base += _("If you do use 25fps you should change your DCP standard to SMPTE.");
165 /* 30fps: we can't really offer any decent solutions */
166 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."));
171 /* You almost certainly want to go to half frame rate */
172 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));
176 optional<double> lowest_speed_up;
177 optional<double> highest_speed_up;
178 BOOST_FOREACH (shared_ptr<const Content> i, content) {
179 double spu = film->active_frame_rate_change(i->position()).speed_up;
180 if (!lowest_speed_up || spu < *lowest_speed_up) {
181 lowest_speed_up = spu;
183 if (!highest_speed_up || spu > *highest_speed_up) {
184 highest_speed_up = spu;
188 double worst_speed_up = 1;
189 if (highest_speed_up) {
190 worst_speed_up = *highest_speed_up;
192 if (lowest_speed_up) {
193 worst_speed_up = max (worst_speed_up, 1 / *lowest_speed_up);
196 if (worst_speed_up > 25.5/24.0) {
197 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."));
201 BOOST_FOREACH (shared_ptr<const Content> i, content) {
202 if (boost::algorithm::starts_with (i->path(0).filename().string(), "VTS_")) {
208 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));
212 BOOST_FOREACH (shared_ptr<const Content> i, content) {
213 if (i->video && i->video->frame_type() != VIDEO_FRAME_TYPE_2D) {
218 if (three_d > 0 && !film->three_d()) {
219 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.)"));
222 boost::filesystem::path path = film->audio_analysis_path (film->playlist ());
223 if (boost::filesystem::exists (path)) {
225 shared_ptr<AudioAnalysis> an (new AudioAnalysis (path));
229 vector<AudioAnalysis::PeakTime> sample_peak = an->sample_peak ();
230 vector<float> true_peak = an->true_peak ();
232 for (size_t i = 0; i < sample_peak.size(); ++i) {
233 float const peak = max (sample_peak[i].peak, true_peak.empty() ? 0 : true_peak[i]);
234 float const peak_dB = linear_to_db(peak) + an->gain_correction(film->playlist());
236 ch += dcp::raw_convert<string> (short_audio_channel_name (i)) + ", ";
240 ch = ch.substr (0, ch.length() - 2);
243 hint (String::compose (
244 _("Your audio level is very high (on %1). You should reduce the gain of your audio content."),
249 } catch (OldFormatError& e) {
250 /* The audio analysis is too old to load in; just skip this hint as if
251 it had never been run.
256 emit (bind(boost::ref(Progress), _("Examining closed captions")));
258 shared_ptr<Player> player (new Player(film));
259 player->set_ignore_video ();
260 player->set_ignore_audio ();
261 player->Text.connect (bind(&Hints::text, this, _1, _2, _4));
263 struct timeval last_pulse;
264 gettimeofday (&last_pulse, 0);
267 while (!player->pass()) {
270 gettimeofday (&now, 0);
271 if ((seconds(now) - seconds(last_pulse)) > 1) {
275 emit (bind (boost::ref(Pulse)));
283 emit (bind(boost::ref(Finished)));
287 Hints::hint (string h)
289 emit(bind(boost::ref(Hint), h));
293 Hints::text (PlayerText text, TextType type, DCPTimePeriod period)
295 if (type != TEXT_CLOSED_CAPTION) {
299 int lines = text.string.size();
300 BOOST_FOREACH (StringText i, text.string) {
301 if (utf8_strlen(i.text()) > CLOSED_CAPTION_LENGTH) {
305 hint (String::compose(_("Some of your closed captions have lines longer than %1 characters, so they will probably be word-wrapped."), CLOSED_CAPTION_LENGTH));
310 if (!_too_many_ccap_lines && lines > CLOSED_CAPTION_LINES) {
311 hint (String::compose(_("Some of your closed captions span more than %1 lines, so they will be truncated."), CLOSED_CAPTION_LINES));
312 _too_many_ccap_lines = true;
315 shared_ptr<const Film> film = _film.lock ();
316 DCPOMATIC_ASSERT (film);
318 /* XXX: maybe overlapping closed captions (i.e. different languages) are OK with Interop? */
319 if (film->interop() && !_overlap_ccap && _last && _last->overlap(period)) {
320 _overlap_ccap = true;
321 hint (_("You have overlapping closed captions, which are not allowed in Interop DCPs. Change your DCP standard to SMPTE."));