2 Copyright (C) 2016 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 "subtitle_content.h"
29 #include "audio_analysis.h"
30 #include "compose.hpp"
31 #include <boost/foreach.hpp>
32 #include <boost/algorithm/string.hpp>
39 using boost::shared_ptr;
40 using boost::optional;
43 get_hints (shared_ptr<const Film> film)
47 ContentList content = film->content ();
49 bool big_font_files = false;
50 if (film->interop ()) {
51 BOOST_FOREACH (shared_ptr<Content> i, content) {
53 BOOST_FOREACH (shared_ptr<Font> j, i->subtitle->fonts ()) {
54 for (int k = 0; k < FontFiles::VARIANTS; ++k) {
55 optional<boost::filesystem::path> const p = j->file (static_cast<FontFiles::Variant> (k));
56 if (p && boost::filesystem::file_size (p.get()) >= (640 * 1024)) {
57 big_font_files = true;
66 hints.push_back (_("You have specified a font file which is larger than 640kB. This is very likely to cause problems on playback."));
69 if (film->audio_channels() < 6) {
70 hints.push_back (_("Your DCP has fewer than 6 audio channels. This may cause problems on some projectors."));
73 int flat_or_narrower = 0;
75 BOOST_FOREACH (shared_ptr<const Content> i, content) {
77 Ratio const * r = i->video->scale().ratio ();
78 if (r && r->id() == "239") {
80 } else if (r && r->id() != "239" && r->id() != "full-frame") {
86 if (scope && !flat_or_narrower && film->container()->id() == "185") {
87 hints.push_back (_("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."));
90 if (!scope && flat_or_narrower && film->container()->id() == "239") {
91 hints.push_back (_("All of your content is at 1.85:1 or narrower but your DCP's container is Scope (2.39:1). This will pillar-box your content inside a Flat (1.85:1) frame. You may prefer to set your DCP's container to Flat (1.85:1) in the \"DCP\" tab."));
94 if (film->video_frame_rate() != 24 && film->video_frame_rate() != 48) {
95 hints.push_back (String::compose (_("Your DCP frame rate (%1 fps) may cause problems in a few (mostly older) projectors. Use 24 or 48 frames per second to be on the safe side."), film->video_frame_rate()));
98 if (film->j2k_bandwidth() >= 245000000) {
99 hints.push_back (_("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."));
102 if (film->interop() && film->video_frame_rate() != 24 && film->video_frame_rate() != 48) {
103 hints.push_back (_("You are set up for an Interop DCP at a frame rate which is not officially supported. You are advised to make a SMPTE DCP instead."));
107 BOOST_FOREACH (shared_ptr<const Content> i, content) {
108 if (boost::algorithm::starts_with (i->path(0).filename().string(), "VTS_")) {
114 hints.push_back (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));
118 BOOST_FOREACH (shared_ptr<const Content> i, content) {
119 if (i->video && i->video->frame_type() != VIDEO_FRAME_TYPE_2D) {
124 if (three_d > 0 && !film->three_d()) {
125 hints.push_back (_("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.)"));
128 boost::filesystem::path path = film->audio_analysis_path (film->playlist ());
129 if (boost::filesystem::exists (path)) {
130 shared_ptr<AudioAnalysis> an (new AudioAnalysis (path));
131 if (an->sample_peak() || an->true_peak()) {
132 float const peak = max (an->sample_peak().get_value_or(0), an->true_peak().get_value_or(0));
133 float const peak_dB = 20 * log10 (peak) + an->gain_correction (film->playlist ());
134 if (peak_dB > -3 && peak_dB < -0.5) {
135 hints.push_back (_("Your audio level is very high. You should reduce the gain of your audio content."));
136 } else if (peak_dB > -0.5) {
137 hints.push_back (_("Your audio level is very close to clipping. You should reduce the gain of your audio content."));