2 Copyright (C) 2012-2021 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 /** @file src/lib/util.cc
22 * @brief Some utility functions and classes.
29 #include "audio_buffers.h"
30 #include "audio_processor.h"
31 #include "cinema_sound_processor.h"
32 #include "compose.hpp"
34 #include "constants.h"
36 #include "dcp_content_type.h"
37 #include "dcpomatic_log.h"
39 #include "exceptions.h"
40 #include "ffmpeg_image_proxy.h"
45 #include "job_manager.h"
48 #include "render_text.h"
49 #include "string_text.h"
50 #include "text_decoder.h"
52 #include "video_content.h"
53 #include <dcp/atmos_asset.h>
54 #include <dcp/decrypted_kdm.h>
56 #include <dcp/filesystem.h>
57 #include <dcp/locale_convert.h>
58 #include <dcp/picture_asset.h>
59 #include <dcp/raw_convert.h>
60 #include <dcp/scope_guard.h>
61 #include <dcp/sound_asset.h>
62 #include <dcp/subtitle_asset.h>
64 #include <dcp/warnings.h>
65 LIBDCP_DISABLE_WARNINGS
67 #include <libavfilter/avfilter.h>
68 #include <libavformat/avformat.h>
69 #include <libavcodec/avcodec.h>
71 LIBDCP_ENABLE_WARNINGS
72 #include <curl/curl.h>
74 #include <pangomm/init.h>
75 #include <unicode/utypes.h>
76 #include <unicode/unistr.h>
77 #include <unicode/translit.h>
78 #include <unicode/brkiter.h>
79 #include <boost/algorithm/string.hpp>
80 #include <boost/range/algorithm/replace_if.hpp>
81 #include <boost/thread.hpp>
82 #include <boost/filesystem.hpp>
83 LIBDCP_DISABLE_WARNINGS
84 #include <boost/locale.hpp>
85 LIBDCP_ENABLE_WARNINGS
86 #ifdef DCPOMATIC_WINDOWS
95 #ifdef DCPOMATIC_POSIX
103 using std::bad_alloc;
108 using std::make_pair;
109 using std::make_shared;
114 using std::set_terminate;
115 using std::shared_ptr;
120 using boost::optional;
121 using boost::lexical_cast;
122 using boost::bad_lexical_cast;
123 using boost::scoped_array;
125 using dcp::raw_convert;
126 using dcp::locale_convert;
127 using namespace dcpomatic;
130 /** Path to our executable, required by the stacktrace stuff and filled
131 * in during App::onInit().
134 bool is_batch_converter = false;
135 static boost::thread::id ui_thread;
136 static boost::filesystem::path backtrace_file;
138 /** Convert some number of seconds to a string representation
139 * in hours, minutes and seconds.
142 * @return String of the form H:M:S (where H is hours, M
143 * is minutes and S is seconds).
146 seconds_to_hms (int s)
154 snprintf (buffer, sizeof(buffer), "%d:%02d:%02d", h, m, s);
159 time_to_hmsf (DCPTime time, Frame rate)
161 Frame f = time.frames_round (rate);
170 snprintf (buffer, sizeof(buffer), "%d:%02d:%02d.%d", h, m, s, static_cast<int>(f));
174 /** @param s Number of seconds.
175 * @return String containing an approximate description of s (e.g. "about 2 hours")
178 seconds_to_approximate_hms (int s)
188 bool minutes = h < 6 && m > 0;
189 bool seconds = h == 0 && m < 10 && s > 0;
191 if (m > 30 && !minutes) {
192 /* round up the hours */
195 if (s > 30 && !seconds) {
196 /* round up the minutes */
206 /// TRANSLATORS: h here is an abbreviation for hours
207 ap += locale_convert<string>(h) + _("h");
209 if (minutes || seconds) {
215 /// TRANSLATORS: m here is an abbreviation for minutes
216 ap += locale_convert<string>(m) + _("m");
225 /// TRANSLATORS: s here is an abbreviation for seconds
226 ap += locale_convert<string>(s) + _("s");
233 seconds (struct timeval t)
235 return t.tv_sec + (double (t.tv_usec) / 1e6);
238 #ifdef DCPOMATIC_WINDOWS
240 /** Resolve symbol name and source location given the path to the executable */
242 addr2line (void const * const addr)
244 char addr2line_cmd[512] = { 0 };
245 sprintf (addr2line_cmd, "addr2line -f -p -e %.256s %p > %s", program_name.c_str(), addr, backtrace_file.string().c_str());
246 return system(addr2line_cmd);
249 LIBDCP_DISABLE_WARNINGS
250 /** This is called when C signals occur on Windows (e.g. SIGSEGV)
251 * (NOT C++ exceptions!). We write a backtrace to backtrace_file by dark means.
252 * Adapted from code here: http://spin.atomicobject.com/2013/01/13/exceptions-stack-traces-c/
255 exception_handler(struct _EXCEPTION_POINTERS * info)
257 dcp::File f(backtrace_file, "w");
259 fprintf(f.get(), "C-style exception %d\n", info->ExceptionRecord->ExceptionCode);
263 if (info->ExceptionRecord->ExceptionCode != EXCEPTION_STACK_OVERFLOW) {
264 CONTEXT* context = info->ContextRecord;
265 SymInitialize (GetCurrentProcess (), 0, true);
267 STACKFRAME frame = { 0 };
269 /* setup initial stack frame */
271 frame.AddrPC.Offset = context->Rip;
272 frame.AddrStack.Offset = context->Rsp;
273 frame.AddrFrame.Offset = context->Rbp;
275 frame.AddrPC.Offset = context->Eip;
276 frame.AddrStack.Offset = context->Esp;
277 frame.AddrFrame.Offset = context->Ebp;
279 frame.AddrPC.Mode = AddrModeFlat;
280 frame.AddrStack.Mode = AddrModeFlat;
281 frame.AddrFrame.Mode = AddrModeFlat;
285 IMAGE_FILE_MACHINE_I386,
286 GetCurrentProcess (),
291 SymFunctionTableAccess,
296 addr2line((void *) frame.AddrPC.Offset);
300 addr2line ((void *) info->ContextRecord->Rip);
302 addr2line ((void *) info->ContextRecord->Eip);
306 return EXCEPTION_CONTINUE_SEARCH;
308 LIBDCP_ENABLE_WARNINGS
312 set_backtrace_file (boost::filesystem::path p)
317 /** This is called when there is an unhandled exception. Any
318 * backtrace in this function is useless on Windows as the stack has
319 * already been unwound from the throw; we have the gdb wrap hack to
326 static bool tried_throw = false;
327 // try once to re-throw currently active exception
333 catch (const std::exception &e) {
334 std::cerr << __FUNCTION__ << " caught unhandled exception. what(): "
335 << e.what() << std::endl;
338 std::cerr << __FUNCTION__ << " caught unknown/unhandled exception."
346 dcpomatic_setup_path_encoding ()
348 #ifdef DCPOMATIC_WINDOWS
349 /* Dark voodoo which, I think, gets boost::filesystem::path to
350 correctly convert UTF-8 strings to paths, and also paths
351 back to UTF-8 strings (on path::string()).
353 After this, constructing boost::filesystem::paths from strings
354 converts from UTF-8 to UTF-16 inside the path. Then
355 path::string().c_str() gives UTF-8 and
356 path::c_str() gives UTF-16.
358 This is all Windows-only. AFAICT Linux/OS X use UTF-8 everywhere,
359 so things are much simpler.
361 std::locale::global (boost::locale::generator().generate (""));
362 boost::filesystem::path::imbue (std::locale ());
367 class LogSink : public Kumu::ILogSink
371 LogSink (LogSink const&) = delete;
372 LogSink& operator= (LogSink const&) = delete;
374 void WriteEntry(const Kumu::LogEntry& entry) override {
375 Kumu::AutoMutex L(m_lock);
376 WriteEntryToListeners(entry);
377 if (entry.TestFilter(m_filter)) {
379 entry.CreateStringWithOptions(buffer, m_options);
380 LOG_GENERAL("asdcplib: %1", buffer);
387 capture_asdcp_logs ()
389 static LogSink log_sink;
390 Kumu::SetDefaultLogSink(&log_sink);
396 ffmpeg_log_callback(void* ptr, int level, const char* fmt, va_list vl)
398 if (level > AV_LOG_WARNING) {
403 static int prefix = 0;
404 av_log_format_line(ptr, level, fmt, vl, line, sizeof (line), &prefix);
406 boost::algorithm::trim(str);
407 dcpomatic_log->log(String::compose("FFmpeg: %1", str), LogEntry::TYPE_GENERAL);
412 capture_ffmpeg_logs()
414 av_log_set_callback(ffmpeg_log_callback);
418 /** Call the required functions to set up DCP-o-matic's static arrays, etc.
419 * Must be called from the UI thread, if there is one.
424 #ifdef DCPOMATIC_WINDOWS
425 boost::filesystem::path p = g_get_user_config_dir ();
426 p /= "backtrace.txt";
427 set_backtrace_file (p);
428 SetUnhandledExceptionFilter(exception_handler);
431 #ifdef DCPOMATIC_GROK
432 /* This makes grok support work with CUDA 12.2 */
433 setenv("CUDA_MODULE_LOADING", "EAGER", 1);
436 #ifdef DCPOMATIC_HAVE_AVREGISTER
437 LIBDCP_DISABLE_WARNINGS
439 avfilter_register_all ();
440 LIBDCP_ENABLE_WARNINGS
444 /* Add our library directory to the libltdl search path so that
445 xmlsec can find xmlsec1-openssl.
447 auto lib = directory_containing_executable().parent_path();
449 setenv ("LTDL_LIBRARY_PATH", lib.c_str (), 1);
452 set_terminate (terminate);
454 #ifdef DCPOMATIC_WINDOWS
455 putenv ("PANGOCAIRO_BACKEND=fontconfig");
456 if (dcp::filesystem::exists(resources_path() / "fonts.conf")) {
457 /* The actual application after installation */
458 putenv(String::compose("FONTCONFIG_PATH=%1", resources_path().string()).c_str());
460 /* The place where fonts.conf is during tests */
461 putenv("FONTCONFIG_PATH=build\\fonts");
466 setenv ("PANGOCAIRO_BACKEND", "fontconfig", 1);
467 setenv ("FONTCONFIG_PATH", resources_path().string().c_str(), 1);
471 dcp::init (libdcp_resources_path());
473 #if defined(DCPOMATIC_WINDOWS) || defined(DCPOMATIC_OSX)
474 /* Render something to fontconfig to create its cache */
475 vector<StringText> subs;
476 dcp::SubtitleString ss(
477 optional<string>(), false, false, false, dcp::Colour(), 42, 1, dcp::Time(), dcp::Time(), 0, dcp::HAlign::CENTER, 0, dcp::VAlign::CENTER, 0, dcp::Direction::LTR,
478 "Hello dolly", dcp::Effect::NONE, dcp::Colour(), dcp::Time(), dcp::Time(), 0, std::vector<dcp::Ruby>()
480 subs.push_back(StringText(ss, 0, make_shared<dcpomatic::Font>("foo"), dcp::SubtitleStandard::SMPTE_2014));
481 render_text (subs, dcp::Size(640, 480), DCPTime(), 24);
484 Ratio::setup_ratios ();
485 PresetColourConversion::setup_colour_conversion_presets ();
486 DCPContentType::setup_dcp_content_types ();
487 Filter::setup_filters ();
488 CinemaSoundProcessor::setup_cinema_sound_processors ();
489 AudioProcessor::setup_audio_processors ();
491 curl_global_init (CURL_GLOBAL_ALL);
493 ui_thread = boost::this_thread::get_id ();
495 capture_asdcp_logs ();
496 capture_ffmpeg_logs();
499 #ifdef DCPOMATIC_WINDOWS
500 boost::filesystem::path
504 GetModuleFileName (0, buffer, 512 * sizeof(wchar_t));
505 boost::filesystem::path p (buffer);
506 p = p.parent_path ();
507 p = p.parent_path ();
514 boost::filesystem::path
517 return "DCP-o-matic 2.app/Contents/Resources";
522 dcpomatic_setup_gettext_i18n (string lang)
524 #ifdef DCPOMATIC_LINUX
528 if (!lang.empty ()) {
529 /* Override our environment language. Note that the caller must not
530 free the string passed into putenv().
532 string s = String::compose ("LANGUAGE=%1", lang);
533 putenv (strdup (s.c_str ()));
534 s = String::compose ("LANG=%1", lang);
535 putenv (strdup (s.c_str ()));
536 s = String::compose ("LC_ALL=%1", lang);
537 putenv (strdup (s.c_str ()));
540 setlocale (LC_ALL, "");
541 textdomain ("libdcpomatic2");
543 #if defined(DCPOMATIC_WINDOWS) || defined(DCPOMATIC_OSX)
544 bindtextdomain ("libdcpomatic2", mo_path().string().c_str());
545 bind_textdomain_codeset ("libdcpomatic2", "UTF8");
548 #ifdef DCPOMATIC_LINUX
549 bindtextdomain ("libdcpomatic2", LINUX_LOCALE_PREFIX);
553 /** Compute a digest of the first and last `size' bytes of a set of files. */
555 digest_head_tail (vector<boost::filesystem::path> files, boost::uintmax_t size)
557 boost::scoped_array<char> buffer (new char[size]);
561 boost::uintmax_t to_do = size;
562 char* p = buffer.get ();
564 while (i < int64_t (files.size()) && to_do > 0) {
565 dcp::File f(files[i], "rb");
567 throw OpenFileError (files[i].string(), errno, OpenFileError::READ);
570 auto this_time = min(to_do, dcp::filesystem::file_size(files[i]));
571 f.checked_read(p, this_time);
577 digester.add (buffer.get(), size - to_do);
582 i = files.size() - 1;
583 while (i >= 0 && to_do > 0) {
584 dcp::File f(files[i], "rb");
586 throw OpenFileError (files[i].string(), errno, OpenFileError::READ);
589 auto this_time = min(to_do, dcp::filesystem::file_size(files[i]));
590 f.seek(-this_time, SEEK_END);
591 f.checked_read(p, this_time);
597 digester.add (buffer.get(), size - to_do);
599 return digester.get ();
604 simple_digest (vector<boost::filesystem::path> paths)
606 DCP_ASSERT(!paths.empty());
607 return digest_head_tail(paths, 1000000) + raw_convert<string>(dcp::filesystem::file_size(paths.front()));
611 /** Trip an assert if the caller is not in the UI thread */
615 DCPOMATIC_ASSERT (boost::this_thread::get_id() == ui_thread);
619 audio_channel_name (int c)
621 DCPOMATIC_ASSERT (MAX_DCP_AUDIO_CHANNELS == 16);
623 /// TRANSLATORS: these are the names of audio channels; Lfe (sub) is the low-frequency
624 /// enhancement channel (sub-woofer).
625 string const channels[] = {
632 _("Hearing impaired"),
633 _("Visually impaired"),
636 _("Left rear surround"),
637 _("Right rear surround"),
639 _("D-BOX secondary"),
648 short_audio_channel_name (int c)
650 DCPOMATIC_ASSERT (MAX_DCP_AUDIO_CHANNELS == 16);
652 /// TRANSLATORS: these are short names of audio channels; Lfe is the low-frequency
653 /// enhancement channel (sub-woofer). HI is the hearing-impaired audio track and
654 /// VI is the visually-impaired audio track (audio describe). DBP is the D-BOX
655 /// primary channel and DBS is the D-BOX secondary channel.
656 string const channels[] = {
680 valid_image_file (boost::filesystem::path f)
682 if (boost::starts_with(f.filename().string(), "._")) {
686 auto ext = f.extension().string();
687 transform (ext.begin(), ext.end(), ext.begin(), ::tolower);
689 ext == ".tif" || ext == ".tiff" || ext == ".jpg" || ext == ".jpeg" ||
690 ext == ".png" || ext == ".bmp" || ext == ".tga" || ext == ".dpx" ||
691 ext == ".j2c" || ext == ".j2k" || ext == ".jp2" || ext == ".exr" ||
692 ext == ".jpf" || ext == ".psd"
697 valid_sound_file (boost::filesystem::path f)
699 if (boost::starts_with(f.filename().string(), "._")) {
703 auto ext = f.extension().string();
704 transform (ext.begin(), ext.end(), ext.begin(), ::tolower);
705 return (ext == ".wav" || ext == ".mp3" || ext == ".aif" || ext == ".aiff");
709 valid_j2k_file (boost::filesystem::path f)
711 auto ext = f.extension().string();
712 transform (ext.begin(), ext.end(), ext.begin(), ::tolower);
713 return (ext == ".j2k" || ext == ".j2c" || ext == ".jp2");
717 tidy_for_filename (string f)
719 boost::replace_if (f, boost::is_any_of ("\\/:"), '_');
724 fit_ratio_within (float ratio, dcp::Size full_frame)
726 if (ratio < full_frame.ratio ()) {
727 return dcp::Size (lrintf (full_frame.height * ratio), full_frame.height);
730 return dcp::Size (full_frame.width, lrintf (full_frame.width / ratio));
735 asset_filename (shared_ptr<dcp::Asset> asset, string type, int reel_index, int reel_count, optional<string> summary, string extension)
737 dcp::NameFormat::Map values;
739 values['r'] = raw_convert<string>(reel_index + 1);
740 values['n'] = raw_convert<string>(reel_count);
742 values['c'] = summary.get();
744 return careful_string_filter(Config::instance()->dcp_asset_filename_format().get(values, "_" + asset->id() + extension));
749 video_asset_filename (shared_ptr<dcp::PictureAsset> asset, int reel_index, int reel_count, optional<string> summary)
751 return asset_filename(asset, "j2c", reel_index, reel_count, summary, ".mxf");
756 audio_asset_filename (shared_ptr<dcp::SoundAsset> asset, int reel_index, int reel_count, optional<string> summary)
758 return asset_filename(asset, "pcm", reel_index, reel_count, summary, ".mxf");
763 subtitle_asset_filename (shared_ptr<dcp::SubtitleAsset> asset, int reel_index, int reel_count, optional<string> summary, string extension)
765 return asset_filename(asset, "sub", reel_index, reel_count, summary, extension);
770 atmos_asset_filename (shared_ptr<dcp::AtmosAsset> asset, int reel_index, int reel_count, optional<string> summary)
772 return asset_filename(asset, "atmos", reel_index, reel_count, summary, ".mxf");
777 careful_string_filter (string s)
779 /* Filter out `bad' characters which `may' cause problems with some systems (either for DCP name or filename).
780 There's no apparent list of what really is allowed, so this is a guess.
781 Safety first and all that.
784 /* First transliterate using libicu to try to remove accents in a "nice" way */
785 auto transliterated = icu::UnicodeString::fromUTF8(icu::StringPiece(s));
786 auto status = U_ZERO_ERROR;
787 auto transliterator = icu::Transliterator::createInstance("NFD; [:M:] Remove; NFC", UTRANS_FORWARD, status);
788 transliterator->transliterate(transliterated);
790 /* Some things are missed by ICU's transliterator */
791 std::map<wchar_t, wchar_t> replacements = {
796 icu::UnicodeString transliterated_more;
797 for (int i = 0; i < transliterated.length(); ++i) {
798 auto replacement = replacements.find(transliterated[i]);
799 if (replacement != replacements.end()) {
800 transliterated_more += replacement->second;
802 transliterated_more += transliterated[i];
806 /* Then remove anything that's not in a very limited character set */
808 wstring const allowed = L"0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz-_.+";
809 for (int i = 0; i < transliterated_more.length(); ++i) {
810 wchar_t c = transliterated_more[i];
811 if (allowed.find(c) != string::npos) {
816 return boost::locale::conv::utf_to_utf<char>(out);
819 /** @param mapped List of mapped audio channels from a Film.
820 * @param channels Total number of channels in the Film.
821 * @return First: number of non-LFE soundtrack channels (L/R/C/Ls/Rs/Lc/Rc/Bsl/Bsr), second: number of LFE channels.
824 audio_channel_types (list<int> mapped, int channels)
829 for (auto i: mapped) {
831 /* This channel is mapped but is not included in the DCP */
835 switch (static_cast<dcp::Channel>(i)) {
836 case dcp::Channel::LFE:
839 case dcp::Channel::LEFT:
840 case dcp::Channel::RIGHT:
841 case dcp::Channel::CENTRE:
842 case dcp::Channel::LS:
843 case dcp::Channel::RS:
844 case dcp::Channel::BSL:
845 case dcp::Channel::BSR:
848 case dcp::Channel::HI:
849 case dcp::Channel::VI:
850 case dcp::Channel::MOTION_DATA:
851 case dcp::Channel::SYNC_SIGNAL:
852 case dcp::Channel::SIGN_LANGUAGE:
853 case dcp::Channel::CHANNEL_COUNT:
858 return make_pair (non_lfe, lfe);
861 shared_ptr<AudioBuffers>
862 remap (shared_ptr<const AudioBuffers> input, int output_channels, AudioMapping map)
864 auto mapped = make_shared<AudioBuffers>(output_channels, input->frames());
865 mapped->make_silent ();
867 int to_do = min (map.input_channels(), input->channels());
869 for (int i = 0; i < to_do; ++i) {
870 for (int j = 0; j < mapped->channels(); ++j) {
871 if (map.get(i, j) > 0) {
872 mapped->accumulate_channel(
887 utf8_strlen (string s)
889 size_t const len = s.length ();
891 for (size_t i = 0; i < len; ++i) {
892 unsigned char c = s[i];
893 if ((c & 0xe0) == 0xc0) {
895 } else if ((c & 0xf0) == 0xe0) {
897 } else if ((c & 0xf8) == 0xf0) {
906 /** @param size Size of picture that the subtitle will be overlaid onto */
908 emit_subtitle_image (ContentTimePeriod period, dcp::SubtitleImage sub, dcp::Size size, shared_ptr<TextDecoder> decoder)
910 /* XXX: this is rather inefficient; decoding the image just to get its size */
911 FFmpegImageProxy proxy (sub.png_image());
912 auto image = proxy.image(Image::Alignment::PADDED).image;
913 /* set up rect with height and width */
914 dcpomatic::Rect<double> rect(0, 0, image->size().width / double(size.width), image->size().height / double(size.height));
916 /* add in position */
918 switch (sub.h_align()) {
919 case dcp::HAlign::LEFT:
920 rect.x += sub.h_position();
922 case dcp::HAlign::CENTER:
923 rect.x += 0.5 + sub.h_position() - rect.width / 2;
925 case dcp::HAlign::RIGHT:
926 rect.x += 1 - sub.h_position() - rect.width;
930 switch (sub.v_align()) {
931 case dcp::VAlign::TOP:
932 rect.y += sub.v_position();
934 case dcp::VAlign::CENTER:
935 rect.y += 0.5 + sub.v_position() - rect.height / 2;
937 case dcp::VAlign::BOTTOM:
938 rect.y += 1 - sub.v_position() - rect.height;
942 decoder->emit_bitmap (period, image, rect);
946 /** XXX: could use mmap? */
948 copy_in_bits (boost::filesystem::path from, boost::filesystem::path to, std::function<void (float)> progress)
950 dcp::File f(from, "rb");
952 throw OpenFileError (from, errno, OpenFileError::READ);
954 dcp::File t(to, "wb");
956 throw OpenFileError (to, errno, OpenFileError::WRITE);
959 /* on the order of a second's worth of copying */
960 boost::uintmax_t const chunk = 20 * 1024 * 1024;
962 std::vector<uint8_t> buffer(chunk);
964 auto const total = dcp::filesystem::file_size(from);
965 boost::uintmax_t remaining = total;
968 boost::uintmax_t this_time = min (chunk, remaining);
969 size_t N = f.read(buffer.data(), 1, chunk);
971 throw ReadFileError (from, errno);
974 N = t.write(buffer.data(), 1, this_time);
976 throw WriteFileError (to, errno);
979 progress (1 - float(remaining) / total);
980 remaining -= this_time;
986 scale_for_display (dcp::Size s, dcp::Size display_container, dcp::Size film_container, PixelQuanta quanta)
988 /* Now scale it down if the display container is smaller than the film container */
989 if (display_container != film_container) {
990 float const scale = min (
991 float (display_container.width) / film_container.width,
992 float (display_container.height) / film_container.height
995 s.width = lrintf (s.width * scale);
996 s.height = lrintf (s.height * scale);
997 s = quanta.round (s);
1005 decrypt_kdm_with_helpful_error (dcp::EncryptedKDM kdm)
1008 return dcp::DecryptedKDM (kdm, Config::instance()->decryption_chain()->key().get());
1009 } catch (dcp::KDMDecryptionError& e) {
1010 /* Try to flesh out the error a bit */
1011 auto const kdm_subject_name = kdm.recipient_x509_subject_name();
1012 bool on_chain = false;
1013 auto dc = Config::instance()->decryption_chain();
1014 for (auto i: dc->root_to_leaf()) {
1015 if (i.subject() == kdm_subject_name) {
1020 throw KDMError (_("This KDM was not made for DCP-o-matic's decryption certificate."), e.what());
1021 } else if (kdm_subject_name != dc->leaf().subject()) {
1022 throw KDMError (_("This KDM was made for DCP-o-matic but not for its leaf certificate."), e.what());
1030 boost::filesystem::path
1031 default_font_file ()
1033 boost::filesystem::path liberation_normal;
1035 liberation_normal = resources_path() / "LiberationSans-Regular.ttf";
1036 if (!dcp::filesystem::exists(liberation_normal)) {
1037 /* Hack for unit tests */
1038 liberation_normal = resources_path() / "fonts" / "LiberationSans-Regular.ttf";
1040 } catch (boost::filesystem::filesystem_error& e) {
1044 if (!dcp::filesystem::exists(liberation_normal)) {
1045 liberation_normal = "/usr/share/fonts/truetype/liberation/LiberationSans-Regular.ttf";
1047 if (!dcp::filesystem::exists(liberation_normal)) {
1048 liberation_normal = "/usr/share/fonts/liberation-sans/LiberationSans-Regular.ttf";
1051 return liberation_normal;
1055 /* Set to 1 to print the IDs of some of our threads to stdout on creation */
1056 #define DCPOMATIC_DEBUG_THREADS 0
1058 #if DCPOMATIC_DEBUG_THREADS
1060 start_of_thread (string name)
1062 std::cout << "THREAD:" << name << ":" << std::hex << pthread_self() << "\n";
1066 start_of_thread (string)
1074 error_details(boost::system::error_code ec)
1076 return String::compose("%1:%2:%3", ec.category().name(), ec.value(), ec.message());
1081 contains_assetmap(boost::filesystem::path dir)
1083 return dcp::filesystem::is_regular_file(dir / "ASSETMAP") || dcp::filesystem::is_regular_file(dir / "ASSETMAP.xml");
1088 word_wrap(string input, int columns)
1091 UErrorCode status = U_ZERO_ERROR;
1092 auto iter = icu::BreakIterator::createLineInstance(locale, status);
1093 dcp::ScopeGuard sg = [iter]() { delete iter; };
1094 if (U_FAILURE(status)) {
1098 auto input_icu = icu::UnicodeString::fromUTF8(icu::StringPiece(input));
1099 iter->setText(input_icu);
1103 while (position < input_icu.length()) {
1104 int end_of_line = iter->preceding(position + columns + 1);
1105 icu::UnicodeString line;
1106 if (end_of_line <= position) {
1107 /* There's no good line-break position; just break in the middle of a word */
1108 line = input_icu.tempSubString(position, columns);
1109 position += columns;
1111 line = input_icu.tempSubString(position, end_of_line - position);
1112 position = end_of_line;
1114 line.toUTF8String(output);
1123 #ifdef DCPOMATIC_GROK
1125 setup_grok_library_path()
1127 static std::string old_path;
1128 if (old_path.empty()) {
1129 auto const old = getenv("LD_LIRARY_PATH");
1134 auto const grok = Config::instance()->grok();
1135 if (!grok || grok->binary_location.empty()) {
1136 setenv("LD_LIRARY_PATH", old_path.c_str(), 1);
1140 std::string new_path = old_path;
1141 if (!new_path.empty()) {
1144 new_path += grok->binary_location.string();
1146 setenv("LD_LIBRARY_PATH", new_path.c_str(), 1);