2 Copyright (C) 2016-2021 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/>.
21 #include "dcp_content_type.h"
26 #include "video_content.h"
27 #include "text_content.h"
28 #include "audio_processor.h"
30 #include "font_data.h"
32 #include "audio_analysis.h"
33 #include "compose.hpp"
39 #include <dcp/raw_convert.h>
41 #include <dcp/reel_closed_caption_asset.h>
42 #include <dcp/reel_subtitle_asset.h>
43 #include <boost/algorithm/string.hpp>
49 using std::make_shared;
53 using std::shared_ptr;
57 using boost::optional;
59 using namespace dcpomatic;
60 #if BOOST_VERSION >= 106100
61 using namespace boost::placeholders;
65 /* When checking to see if things are too big, we'll say they are if they
66 * are more than the target size minus this "slack."
68 #define SIZE_SLACK 4096
71 /* When writing hints:
72 * - put quotation marks around the name of a GUI tab that you are referring to (e.g. "DCP" or "DCP→Video" tab)
76 Hints::Hints (weak_ptr<const Film> film)
77 : WeakConstFilm (film)
78 , _writer (new Writer(film, weak_ptr<Job>(), true))
80 , _overlap_ccap (false)
81 , _too_many_ccap_lines (false)
82 , _early_subtitle (false)
83 , _short_subtitle (false)
84 , _subtitles_too_close (false)
85 , _too_many_subtitle_lines (false)
86 , _long_subtitle (false)
95 _thread = boost::thread (bind(&Hints::thread, this));
100 boost::this_thread::disable_interruption dis;
104 _thread.interrupt ();
111 Hints::check_few_audio_channels ()
113 if (film()->audio_channels() < 6) {
114 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."));
120 Hints::check_upmixers ()
122 auto ap = film()->audio_processor();
123 if (ap && (ap->id() == "stereo-5.1-upmix-a" || ap->id() == "stereo-5.1-upmix-b")) {
124 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 Hints::check_incorrect_container ()
132 int narrower_than_scope = 0;
134 for (auto i: film()->content()) {
136 Ratio const * r = Ratio::nearest_from_ratio(i->video->scaled_size(film()->frame_size()).ratio());
137 if (r && r->id() == "239") {
139 } else if (r && r->id() != "239" && r->id() != "235" && r->id() != "190") {
140 ++narrower_than_scope;
145 string const film_container = film()->container()->id();
147 if (scope && !narrower_than_scope && film_container == "185") {
148 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."));
151 if (!scope && narrower_than_scope && film_container == "239") {
152 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."));
158 Hints::check_unusual_container ()
160 auto const film_container = film()->container()->id();
161 if (film_container != "185" && film_container != "239" && film_container != "190") {
162 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"));
168 Hints::check_high_j2k_bandwidth ()
170 if (film()->j2k_bandwidth() >= 245000000) {
171 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."));
177 Hints::check_frame_rate ()
180 switch (f->video_frame_rate()) {
186 /* You might want to go to 24 */
187 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);
190 base += _("If you do use 25fps you should change your DCP standard to SMPTE.");
196 /* 30fps: we can't really offer any decent solutions */
197 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."));
202 /* You almost certainly want to go to half frame rate */
203 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."), f->video_frame_rate(), f->video_frame_rate() / 2));
210 Hints::check_speed_up ()
212 optional<double> lowest_speed_up;
213 optional<double> highest_speed_up;
214 for (auto i: film()->content()) {
215 double spu = film()->active_frame_rate_change(i->position()).speed_up;
216 if (!lowest_speed_up || spu < *lowest_speed_up) {
217 lowest_speed_up = spu;
219 if (!highest_speed_up || spu > *highest_speed_up) {
220 highest_speed_up = spu;
224 double worst_speed_up = 1;
225 if (highest_speed_up) {
226 worst_speed_up = *highest_speed_up;
228 if (lowest_speed_up) {
229 worst_speed_up = max (worst_speed_up, 1 / *lowest_speed_up);
232 if (worst_speed_up > 25.5/24.0) {
233 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."));
240 Hints::check_interop ()
242 if (film()->interop()) {
243 hint (_("In general it is now advisable to make SMPTE DCPs unless you have a particular reason to use Interop. You are advised to set your DCP to use the SMPTE standard in the \"DCP\" tab."));
249 Hints::check_big_font_files ()
251 bool big_font_files = false;
252 if (film()->interop ()) {
253 for (auto i: film()->content()) {
254 for (auto j: i->text) {
255 for (auto k: j->fonts()) {
256 optional<boost::filesystem::path> const p = k->file ();
257 if (p && boost::filesystem::file_size(p.get()) >= (MAX_FONT_FILE_SIZE - SIZE_SLACK)) {
258 big_font_files = true;
265 if (big_font_files) {
266 hint (_("You have specified a font file which is larger than 640kB. This is very likely to cause problems on playback."));
275 for (auto i: film()->content()) {
276 if (boost::algorithm::starts_with (i->path(0).filename().string(), "VTS_")) {
282 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));
288 Hints::check_3d_in_2d ()
291 for (auto i: film()->content()) {
292 if (i->video && i->video->frame_type() != VideoFrameType::TWO_D) {
297 if (three_d > 0 && !film()->three_d()) {
298 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.)"));
304 Hints::check_loudness ()
306 auto path = film()->audio_analysis_path(film()->playlist());
307 if (boost::filesystem::exists (path)) {
309 auto an = make_shared<AudioAnalysis>(path);
313 auto sample_peak = an->sample_peak ();
314 auto true_peak = an->true_peak ();
316 for (size_t i = 0; i < sample_peak.size(); ++i) {
317 float const peak = max (sample_peak[i].peak, true_peak.empty() ? 0 : true_peak[i]);
318 float const peak_dB = linear_to_db(peak) + an->gain_correction(film()->playlist());
320 ch += dcp::raw_convert<string> (short_audio_channel_name (i)) + ", ";
324 ch = ch.substr (0, ch.length() - 2);
327 hint (String::compose (
328 _("Your audio level is very high (on %1). You should reduce the gain of your audio content."),
333 } catch (OldFormatError& e) {
334 /* The audio analysis is too old to load in; just skip this hint as if
335 it had never been run.
344 subtitle_mxf_too_big (shared_ptr<dcp::SubtitleAsset> asset)
346 return asset && asset->file() && boost::filesystem::file_size(*asset->file()) >= (MAX_TEXT_MXF_SIZE - SIZE_SLACK);
351 Hints::check_out_of_range_markers ()
353 auto const length = film()->length();
354 for (auto const& i: film()->markers()) {
355 if (i.second >= length) {
356 hint (_("At least one marker comes after the end of the project and will be ignored."));
365 auto film = _film.lock ();
370 auto content = film->content ();
373 check_big_font_files ();
374 check_few_audio_channels ();
376 check_incorrect_container ();
377 check_unusual_container ();
378 check_high_j2k_bandwidth ();
384 check_ffec_and_ffmc_in_smpte_feature ();
385 check_out_of_range_markers ();
387 emit (bind(boost::ref(Progress), _("Examining closed captions")));
389 auto player = make_shared<Player>(film);
390 player->set_ignore_video ();
391 player->set_ignore_audio ();
392 player->Text.connect (bind(&Hints::text, this, _1, _2, _3, _4));
394 struct timeval last_pulse;
395 gettimeofday (&last_pulse, 0);
398 while (!player->pass()) {
401 gettimeofday (&now, 0);
402 if ((seconds(now) - seconds(last_pulse)) > 1) {
406 emit (bind (boost::ref(Pulse)));
414 _writer->write (player->get_subtitle_fonts());
416 bool ccap_xml_too_big = false;
417 bool ccap_mxf_too_big = false;
418 bool subs_mxf_too_big = false;
420 boost::filesystem::path dcp_dir = film->dir("hints") / dcpomatic::get_process_id();
421 boost::filesystem::remove_all (dcp_dir);
424 _writer->finish (film->dir("hints") / dcpomatic::get_process_id());
427 emit (bind(boost::ref(Finished)));
431 dcp::DCP dcp (dcp_dir);
433 DCPOMATIC_ASSERT (dcp.cpls().size() == 1);
434 for (auto reel: dcp.cpls()[0]->reels()) {
435 for (auto ccap: reel->closed_captions()) {
436 if (ccap->asset() && ccap->asset()->xml_as_string().length() > static_cast<size_t>(MAX_CLOSED_CAPTION_XML_SIZE - SIZE_SLACK) && !ccap_xml_too_big) {
438 "At least one of your closed caption files' XML part is larger than " MAX_CLOSED_CAPTION_XML_SIZE_TEXT
439 ". You should divide the DCP into shorter reels."
441 ccap_xml_too_big = true;
443 if (subtitle_mxf_too_big(ccap->asset()) && !ccap_mxf_too_big) {
445 "At least one of your closed caption files is larger than " MAX_TEXT_MXF_SIZE_TEXT
446 " in total. You should divide the DCP into shorter reels."
448 ccap_mxf_too_big = true;
451 if (reel->main_subtitle() && subtitle_mxf_too_big(reel->main_subtitle()->asset()) && !subs_mxf_too_big) {
453 "At least one of your subtitle files is larger than " MAX_TEXT_MXF_SIZE_TEXT " in total. "
454 "You should divide the DCP into shorter reels."
456 subs_mxf_too_big = true;
459 boost::filesystem::remove_all (dcp_dir);
461 emit (bind(boost::ref(Finished)));
465 Hints::hint (string h)
467 emit(bind(boost::ref(Hint), h));
471 Hints::text (PlayerText text, TextType type, optional<DCPTextTrack> track, DCPTimePeriod period)
473 _writer->write (text, type, track, period);
476 case TextType::CLOSED_CAPTION:
477 closed_caption (text, period);
479 case TextType::OPEN_SUBTITLE:
480 open_subtitle (text, period);
489 Hints::closed_caption (PlayerText text, DCPTimePeriod period)
491 int lines = text.string.size();
492 for (auto i: text.string) {
493 if (utf8_strlen(i.text()) > MAX_CLOSED_CAPTION_LENGTH) {
499 "At least one of your closed caption lines has more than %1 characters. "
500 "It is advisable to make each line %1 characters at most in length.",
501 MAX_CLOSED_CAPTION_LENGTH,
502 MAX_CLOSED_CAPTION_LENGTH)
508 if (!_too_many_ccap_lines && lines > MAX_CLOSED_CAPTION_LINES) {
509 hint (String::compose(_("Some of your closed captions span more than %1 lines, so they will be truncated."), MAX_CLOSED_CAPTION_LINES));
510 _too_many_ccap_lines = true;
513 /* XXX: maybe overlapping closed captions (i.e. different languages) are OK with Interop? */
514 if (film()->interop() && !_overlap_ccap && _last_ccap && _last_ccap->overlap(period)) {
515 _overlap_ccap = true;
516 hint (_("You have overlapping closed captions, which are not allowed in Interop DCPs. Change your DCP standard to SMPTE."));
524 Hints::open_subtitle (PlayerText text, DCPTimePeriod period)
526 if (period.from < DCPTime::from_seconds(4) && !_early_subtitle) {
527 _early_subtitle = true;
528 hint (_("It is advisable to put your first subtitle at least 4 seconds after the start of the DCP to make sure it is seen."));
531 int const vfr = film()->video_frame_rate ();
533 if (period.duration().frames_round(vfr) < 15 && !_short_subtitle) {
534 _short_subtitle = true;
535 hint (_("At least one of your subtitles lasts less than 15 frames. It is advisable to make each subtitle at least 15 frames long."));
538 if (_last_subtitle && DCPTime(period.from - _last_subtitle->to).frames_round(vfr) < 2 && !_subtitles_too_close) {
539 _subtitles_too_close = true;
540 hint (_("At least one of your subtitles starts less than 2 frames after the previous one. It is advisable to make the gap between subtitles at least 2 frames."));
543 if (text.string.size() > 3 && !_too_many_subtitle_lines) {
544 _too_many_subtitle_lines = true;
545 hint (_("At least one of your subtitles has more than 3 lines. It is advisable to use no more than 3 lines."));
548 size_t longest_line = 0;
549 for (auto const& i: text.string) {
550 longest_line = max (longest_line, i.text().length());
553 if (longest_line > 52 && !_long_subtitle) {
554 _long_subtitle = true;
555 hint (_("At least one of your subtitle lines has more than 52 characters. It is advisable to make each line 52 characters at most in length."));
558 _last_subtitle = period;
563 Hints::check_ffec_and_ffmc_in_smpte_feature ()
566 if (!f->interop() && f->dcp_content_type()->libdcp_kind() == dcp::ContentKind::FEATURE && (!f->marker(dcp::Marker::FFEC) || !f->marker(dcp::Marker::FFMC))) {
567 hint (_("SMPTE DCPs with the type FTR (feature) should have markers for the first frame of end credits (FFEC) and the first frame of moving credits (FFMC). You should add these markers using the 'Markers' button in the \"DCP\" tab."));