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.
26 #include "exceptions.h"
27 #include "dcp_content_type.h"
29 #include "cinema_sound_processor.h"
34 #include "video_content.h"
37 #include "audio_processor.h"
39 #include "compose.hpp"
40 #include "audio_buffers.h"
41 #include "string_text.h"
43 #include "render_text.h"
44 #include "ffmpeg_image_proxy.h"
46 #include "text_decoder.h"
47 #include "job_manager.h"
49 #include <dcp/decrypted_kdm.h>
50 #include <dcp/locale_convert.h>
52 #include <dcp/raw_convert.h>
53 #include <dcp/picture_asset.h>
54 #include <dcp/sound_asset.h>
55 #include <dcp/subtitle_asset.h>
56 #include <dcp/atmos_asset.h>
58 #include <libavfilter/avfilter.h>
59 #include <libavformat/avformat.h>
60 #include <libavcodec/avcodec.h>
62 #include <curl/curl.h>
64 #include <pangomm/init.h>
65 #include <boost/algorithm/string.hpp>
66 #include <boost/range/algorithm/replace_if.hpp>
67 #include <boost/thread.hpp>
68 #include <boost/filesystem.hpp>
69 DCPOMATIC_DISABLE_WARNINGS
70 #include <boost/locale.hpp>
71 DCPOMATIC_ENABLE_WARNINGS
72 #ifdef DCPOMATIC_WINDOWS
73 #include <boost/locale.hpp>
82 #ifdef DCPOMATIC_POSIX
103 using std::bad_alloc;
104 using std::set_terminate;
105 using std::make_pair;
106 using std::shared_ptr;
107 using std::make_shared;
109 using boost::optional;
110 using boost::lexical_cast;
111 using boost::bad_lexical_cast;
112 using boost::scoped_array;
114 using dcp::raw_convert;
115 using dcp::locale_convert;
116 using namespace dcpomatic;
118 /** Path to our executable, required by the stacktrace stuff and filled
119 * in during App::onInit().
122 bool is_batch_converter = false;
123 static boost::thread::id ui_thread;
124 static boost::filesystem::path backtrace_file;
126 /** Convert some number of seconds to a string representation
127 * in hours, minutes and seconds.
130 * @return String of the form H:M:S (where H is hours, M
131 * is minutes and S is seconds).
134 seconds_to_hms (int s)
142 snprintf (buffer, sizeof(buffer), "%d:%02d:%02d", h, m, s);
147 time_to_hmsf (DCPTime time, Frame rate)
149 Frame f = time.frames_round (rate);
158 snprintf (buffer, sizeof(buffer), "%d:%02d:%02d.%d", h, m, s, static_cast<int>(f));
162 /** @param s Number of seconds.
163 * @return String containing an approximate description of s (e.g. "about 2 hours")
166 seconds_to_approximate_hms (int s)
176 bool minutes = h < 6 && m > 0;
177 bool seconds = h == 0 && m < 10 && s > 0;
179 if (m > 30 && !minutes) {
180 /* round up the hours */
183 if (s > 30 && !seconds) {
184 /* round up the minutes */
194 /// TRANSLATORS: h here is an abbreviation for hours
195 ap += locale_convert<string>(h) + _("h");
197 if (minutes || seconds) {
203 /// TRANSLATORS: m here is an abbreviation for minutes
204 ap += locale_convert<string>(m) + _("m");
213 /// TRANSLATORS: s here is an abbreviation for seconds
214 ap += locale_convert<string>(s) + _("s");
221 seconds (struct timeval t)
223 return t.tv_sec + (double (t.tv_usec) / 1e6);
226 #ifdef DCPOMATIC_WINDOWS
228 /** Resolve symbol name and source location given the path to the executable */
230 addr2line (void const * const addr)
232 char addr2line_cmd[512] = { 0 };
233 sprintf (addr2line_cmd, "addr2line -f -p -e %.256s %p > %s", program_name.c_str(), addr, backtrace_file.string().c_str());
234 return system(addr2line_cmd);
237 DCPOMATIC_DISABLE_WARNINGS
238 /** This is called when C signals occur on Windows (e.g. SIGSEGV)
239 * (NOT C++ exceptions!). We write a backtrace to backtrace_file by dark means.
240 * Adapted from code here: http://spin.atomicobject.com/2013/01/13/exceptions-stack-traces-c/
243 exception_handler(struct _EXCEPTION_POINTERS * info)
245 auto f = fopen_boost (backtrace_file, "w");
246 fprintf (f, "C-style exception %d\n", info->ExceptionRecord->ExceptionCode);
249 if (info->ExceptionRecord->ExceptionCode != EXCEPTION_STACK_OVERFLOW) {
250 CONTEXT* context = info->ContextRecord;
251 SymInitialize (GetCurrentProcess (), 0, true);
253 STACKFRAME frame = { 0 };
255 /* setup initial stack frame */
257 frame.AddrPC.Offset = context->Rip;
258 frame.AddrStack.Offset = context->Rsp;
259 frame.AddrFrame.Offset = context->Rbp;
261 frame.AddrPC.Offset = context->Eip;
262 frame.AddrStack.Offset = context->Esp;
263 frame.AddrFrame.Offset = context->Ebp;
265 frame.AddrPC.Mode = AddrModeFlat;
266 frame.AddrStack.Mode = AddrModeFlat;
267 frame.AddrFrame.Mode = AddrModeFlat;
271 IMAGE_FILE_MACHINE_I386,
272 GetCurrentProcess (),
277 SymFunctionTableAccess,
282 addr2line((void *) frame.AddrPC.Offset);
286 addr2line ((void *) info->ContextRecord->Rip);
288 addr2line ((void *) info->ContextRecord->Eip);
292 return EXCEPTION_CONTINUE_SEARCH;
294 DCPOMATIC_ENABLE_WARNINGS
298 set_backtrace_file (boost::filesystem::path p)
303 /** This is called when there is an unhandled exception. Any
304 * backtrace in this function is useless on Windows as the stack has
305 * already been unwound from the throw; we have the gdb wrap hack to
312 static bool tried_throw = false;
313 // try once to re-throw currently active exception
319 catch (const std::exception &e) {
320 std::cerr << __FUNCTION__ << " caught unhandled exception. what(): "
321 << e.what() << std::endl;
324 std::cerr << __FUNCTION__ << " caught unknown/unhandled exception."
332 dcpomatic_setup_path_encoding ()
334 #ifdef DCPOMATIC_WINDOWS
335 /* Dark voodoo which, I think, gets boost::filesystem::path to
336 correctly convert UTF-8 strings to paths, and also paths
337 back to UTF-8 strings (on path::string()).
339 After this, constructing boost::filesystem::paths from strings
340 converts from UTF-8 to UTF-16 inside the path. Then
341 path::string().c_str() gives UTF-8 and
342 path::c_str() gives UTF-16.
344 This is all Windows-only. AFAICT Linux/OS X use UTF-8 everywhere,
345 so things are much simpler.
347 std::locale::global (boost::locale::generator().generate (""));
348 boost::filesystem::path::imbue (std::locale ());
352 /** Call the required functions to set up DCP-o-matic's static arrays, etc.
353 * Must be called from the UI thread, if there is one.
358 #ifdef DCPOMATIC_WINDOWS
359 boost::filesystem::path p = g_get_user_config_dir ();
360 p /= "backtrace.txt";
361 set_backtrace_file (p);
362 SetUnhandledExceptionFilter(exception_handler);
365 DCPOMATIC_DISABLE_WARNINGS
367 avfilter_register_all ();
368 DCPOMATIC_ENABLE_WARNINGS
371 /* Add our library directory to the libltdl search path so that
372 xmlsec can find xmlsec1-openssl.
374 auto lib = directory_containing_executable().parent_path();
376 setenv ("LTDL_LIBRARY_PATH", lib.c_str (), 1);
379 set_terminate (terminate);
381 #ifdef DCPOMATIC_WINDOWS
382 putenv ("PANGOCAIRO_BACKEND=fontconfig");
383 putenv (String::compose("FONTCONFIG_PATH=%1", resources_path().string()).c_str());
387 setenv ("PANGOCAIRO_BACKEND", "fontconfig", 1);
388 setenv ("FONTCONFIG_PATH", resources_path().string().c_str(), 1);
392 dcp::init (tags_path());
394 #if defined(DCPOMATIC_WINDOWS) || defined(DCPOMATIC_OSX)
395 /* Render something to fontconfig to create its cache */
396 list<StringText> subs;
397 dcp::SubtitleString ss(
398 optional<string>(), false, false, false, dcp::Colour(), 42, 1, dcp::Time(), dcp::Time(), 0, dcp::HAlign::CENTER, 0, dcp::VAlign::CENTER, dcp::Direction::LTR,
399 "Hello dolly", dcp::Effect::NONE, dcp::Colour(), dcp::Time(), dcp::Time()
401 subs.push_back (StringText(ss, 0));
402 render_text (subs, list<shared_ptr<Font>>(), dcp::Size(640, 480), DCPTime(), 24);
405 Ratio::setup_ratios ();
406 PresetColourConversion::setup_colour_conversion_presets ();
407 DCPContentType::setup_dcp_content_types ();
408 Filter::setup_filters ();
409 CinemaSoundProcessor::setup_cinema_sound_processors ();
410 AudioProcessor::setup_audio_processors ();
412 curl_global_init (CURL_GLOBAL_ALL);
414 ui_thread = boost::this_thread::get_id ();
417 #ifdef DCPOMATIC_WINDOWS
418 boost::filesystem::path
422 GetModuleFileName (0, buffer, 512 * sizeof(wchar_t));
423 boost::filesystem::path p (buffer);
424 p = p.parent_path ();
425 p = p.parent_path ();
432 boost::filesystem::path
435 return "DCP-o-matic 2.app/Contents/Resources";
440 dcpomatic_setup_gettext_i18n (string lang)
442 #ifdef DCPOMATIC_LINUX
446 if (!lang.empty ()) {
447 /* Override our environment language. Note that the caller must not
448 free the string passed into putenv().
450 string s = String::compose ("LANGUAGE=%1", lang);
451 putenv (strdup (s.c_str ()));
452 s = String::compose ("LANG=%1", lang);
453 putenv (strdup (s.c_str ()));
454 s = String::compose ("LC_ALL=%1", lang);
455 putenv (strdup (s.c_str ()));
458 setlocale (LC_ALL, "");
459 textdomain ("libdcpomatic2");
461 #if defined(DCPOMATIC_WINDOWS) || defined(DCPOMATIC_OSX)
462 bindtextdomain ("libdcpomatic2", mo_path().string().c_str());
463 bind_textdomain_codeset ("libdcpomatic2", "UTF8");
466 #ifdef DCPOMATIC_LINUX
467 bindtextdomain ("libdcpomatic2", LINUX_LOCALE_PREFIX);
471 /** Compute a digest of the first and last `size' bytes of a set of files. */
473 digest_head_tail (vector<boost::filesystem::path> files, boost::uintmax_t size)
475 boost::scoped_array<char> buffer (new char[size]);
479 boost::uintmax_t to_do = size;
480 char* p = buffer.get ();
482 while (i < int64_t (files.size()) && to_do > 0) {
483 auto f = fopen_boost (files[i], "rb");
485 throw OpenFileError (files[i].string(), errno, OpenFileError::READ);
488 boost::uintmax_t this_time = min (to_do, boost::filesystem::file_size (files[i]));
489 checked_fread (p, this_time, f, files[i]);
496 digester.add (buffer.get(), size - to_do);
501 i = files.size() - 1;
502 while (i >= 0 && to_do > 0) {
503 auto f = fopen_boost (files[i], "rb");
505 throw OpenFileError (files[i].string(), errno, OpenFileError::READ);
508 boost::uintmax_t this_time = min (to_do, boost::filesystem::file_size (files[i]));
509 dcpomatic_fseek (f, -this_time, SEEK_END);
510 checked_fread (p, this_time, f, files[i]);
517 digester.add (buffer.get(), size - to_do);
519 return digester.get ();
522 /** Round a number up to the nearest multiple of another number.
524 * @param stride Array of numbers to round, indexed by c.
525 * @param t Multiple to round to.
526 * @return Rounded number.
529 stride_round_up (int c, int const * stride, int t)
531 int const a = stride[c] + (t - 1);
535 /** Trip an assert if the caller is not in the UI thread */
539 DCPOMATIC_ASSERT (boost::this_thread::get_id() == ui_thread);
543 audio_channel_name (int c)
545 DCPOMATIC_ASSERT (MAX_DCP_AUDIO_CHANNELS == 16);
547 /// TRANSLATORS: these are the names of audio channels; Lfe (sub) is the low-frequency
548 /// enhancement channel (sub-woofer).
549 string const channels[] = {
556 _("Hearing impaired"),
557 _("Visually impaired"),
560 _("Left rear surround"),
561 _("Right rear surround"),
563 _("D-BOX secondary"),
572 short_audio_channel_name (int c)
574 DCPOMATIC_ASSERT (MAX_DCP_AUDIO_CHANNELS == 16);
576 /// TRANSLATORS: these are short names of audio channels; Lfe is the low-frequency
577 /// enhancement channel (sub-woofer). HI is the hearing-impaired audio track and
578 /// VI is the visually-impaired audio track (audio describe). DBP is the D-BOX
579 /// primary channel and DBS is the D-BOX secondary channel.
580 string const channels[] = {
604 valid_image_file (boost::filesystem::path f)
606 if (boost::starts_with (f.leaf().string(), "._")) {
610 auto ext = f.extension().string();
611 transform (ext.begin(), ext.end(), ext.begin(), ::tolower);
613 ext == ".tif" || ext == ".tiff" || ext == ".jpg" || ext == ".jpeg" ||
614 ext == ".png" || ext == ".bmp" || ext == ".tga" || ext == ".dpx" ||
615 ext == ".j2c" || ext == ".j2k" || ext == ".jp2" || ext == ".exr" ||
621 valid_sound_file (boost::filesystem::path f)
623 if (boost::starts_with (f.leaf().string(), "._")) {
627 auto ext = f.extension().string();
628 transform (ext.begin(), ext.end(), ext.begin(), ::tolower);
629 return (ext == ".wav" || ext == ".mp3" || ext == ".aif" || ext == ".aiff");
633 valid_j2k_file (boost::filesystem::path f)
635 auto ext = f.extension().string();
636 transform (ext.begin(), ext.end(), ext.begin(), ::tolower);
637 return (ext == ".j2k" || ext == ".j2c" || ext == ".jp2");
641 tidy_for_filename (string f)
643 boost::replace_if (f, boost::is_any_of ("\\/:"), '_');
648 fit_ratio_within (float ratio, dcp::Size full_frame)
650 if (ratio < full_frame.ratio ()) {
651 return dcp::Size (lrintf (full_frame.height * ratio), full_frame.height);
654 return dcp::Size (full_frame.width, lrintf (full_frame.width / ratio));
658 wrapped_av_malloc (size_t s)
660 auto p = av_malloc (s);
668 split_get_request (string url)
671 AWAITING_QUESTION_MARK,
674 } state = AWAITING_QUESTION_MARK;
676 map<string, string> r;
679 for (size_t i = 0; i < url.length(); ++i) {
681 case AWAITING_QUESTION_MARK:
696 r.insert (make_pair (k, v));
706 if (state == VALUE) {
707 r.insert (make_pair (k, v));
714 video_asset_filename (shared_ptr<dcp::PictureAsset> asset, int reel_index, int reel_count, optional<string> summary)
716 dcp::NameFormat::Map values;
718 values['r'] = raw_convert<string> (reel_index + 1);
719 values['n'] = raw_convert<string> (reel_count);
721 values['c'] = careful_string_filter (summary.get());
723 return Config::instance()->dcp_asset_filename_format().get(values, "_" + asset->id() + ".mxf");
727 audio_asset_filename (shared_ptr<dcp::SoundAsset> asset, int reel_index, int reel_count, optional<string> summary)
729 dcp::NameFormat::Map values;
731 values['r'] = raw_convert<string> (reel_index + 1);
732 values['n'] = raw_convert<string> (reel_count);
734 values['c'] = careful_string_filter (summary.get());
736 return Config::instance()->dcp_asset_filename_format().get(values, "_" + asset->id() + ".mxf");
741 atmos_asset_filename (shared_ptr<dcp::AtmosAsset> asset, int reel_index, int reel_count, optional<string> summary)
743 dcp::NameFormat::Map values;
744 values['t'] = "atmos";
745 values['r'] = raw_convert<string> (reel_index + 1);
746 values['n'] = raw_convert<string> (reel_count);
748 values['c'] = careful_string_filter (summary.get());
750 return Config::instance()->dcp_asset_filename_format().get(values, "_" + asset->id() + ".mxf");
755 relaxed_string_to_float (string s)
758 boost::algorithm::replace_all (s, ",", ".");
759 return lexical_cast<float> (s);
760 } catch (bad_lexical_cast &) {
761 boost::algorithm::replace_all (s, ".", ",");
762 return lexical_cast<float> (s);
767 careful_string_filter (string s)
769 /* Filter out `bad' characters which `may' cause problems with some systems (either for DCP name or filename).
770 There's no apparent list of what really is allowed, so this is a guess.
771 Safety first and all that.
774 wstring ws = boost::locale::conv::utf_to_utf<wchar_t>(s);
777 string const allowed = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz-_%.+";
778 for (size_t i = 0; i < ws.size(); ++i) {
782 /* Remove some accents */
783 if (wstring(L"áà â").find(c) != string::npos) {
786 if (wstring(L"éèêë").find(c) != string::npos) {
789 if (wstring(L"ö").find(c) != string::npos) {
792 if (wstring(L"ü").find(c) != string::npos) {
796 if (allowed.find(c) != string::npos) {
801 return boost::locale::conv::utf_to_utf<char>(out);
804 /** @param mapped List of mapped audio channels from a Film.
805 * @param channels Total number of channels in the Film.
806 * @return First: number of non-LFE soundtrack channels (L/R/C/Ls/Rs/Lc/Rc/Bsl/Bsr), second: number of LFE channels.
809 audio_channel_types (list<int> mapped, int channels)
814 for (auto i: mapped) {
816 /* This channel is mapped but is not included in the DCP */
820 switch (static_cast<dcp::Channel>(i)) {
821 case dcp::Channel::LFE:
824 case dcp::Channel::LEFT:
825 case dcp::Channel::RIGHT:
826 case dcp::Channel::CENTRE:
827 case dcp::Channel::LS:
828 case dcp::Channel::RS:
829 case dcp::Channel::BSL:
830 case dcp::Channel::BSR:
833 case dcp::Channel::HI:
834 case dcp::Channel::VI:
835 case dcp::Channel::MOTION_DATA:
836 case dcp::Channel::SYNC_SIGNAL:
837 case dcp::Channel::SIGN_LANGUAGE:
838 case dcp::Channel::CHANNEL_COUNT:
843 return make_pair (non_lfe, lfe);
846 shared_ptr<AudioBuffers>
847 remap (shared_ptr<const AudioBuffers> input, int output_channels, AudioMapping map)
849 auto mapped = make_shared<AudioBuffers>(output_channels, input->frames());
850 mapped->make_silent ();
852 int to_do = min (map.input_channels(), input->channels());
854 for (int i = 0; i < to_do; ++i) {
855 for (int j = 0; j < mapped->channels(); ++j) {
856 if (map.get(i, j) > 0) {
857 mapped->accumulate_channel(
871 increment_eyes (Eyes e)
873 if (e == EYES_LEFT) {
881 checked_fwrite (void const * ptr, size_t size, FILE* stream, boost::filesystem::path path)
883 size_t N = fwrite (ptr, 1, size, stream);
885 if (ferror(stream)) {
887 throw FileError (String::compose("fwrite error %1", errno), path);
890 throw FileError ("Unexpected short write", path);
896 checked_fread (void* ptr, size_t size, FILE* stream, boost::filesystem::path path)
898 size_t N = fread (ptr, 1, size, stream);
900 if (ferror(stream)) {
902 throw FileError (String::compose("fread error %1", errno), path);
905 throw FileError ("Unexpected short read", path);
911 utf8_strlen (string s)
913 size_t const len = s.length ();
915 for (size_t i = 0; i < len; ++i) {
916 unsigned char c = s[i];
917 if ((c & 0xe0) == 0xc0) {
919 } else if ((c & 0xf0) == 0xe0) {
921 } else if ((c & 0xf8) == 0xf0) {
930 day_of_week_to_string (boost::gregorian::greg_weekday d)
932 switch (d.as_enum()) {
933 case boost::date_time::Sunday:
935 case boost::date_time::Monday:
937 case boost::date_time::Tuesday:
939 case boost::date_time::Wednesday:
940 return _("Wednesday");
941 case boost::date_time::Thursday:
942 return _("Thursday");
943 case boost::date_time::Friday:
945 case boost::date_time::Saturday:
946 return _("Saturday");
949 return d.as_long_string ();
952 /** @param size Size of picture that the subtitle will be overlaid onto */
954 emit_subtitle_image (ContentTimePeriod period, dcp::SubtitleImage sub, dcp::Size size, shared_ptr<TextDecoder> decoder)
956 /* XXX: this is rather inefficient; decoding the image just to get its size */
957 FFmpegImageProxy proxy (sub.png_image(), VideoRange::FULL);
958 auto image = proxy.image().image;
959 /* set up rect with height and width */
960 dcpomatic::Rect<double> rect(0, 0, image->size().width / double(size.width), image->size().height / double(size.height));
962 /* add in position */
964 switch (sub.h_align()) {
965 case dcp::HAlign::LEFT:
966 rect.x += sub.h_position();
968 case dcp::HAlign::CENTER:
969 rect.x += 0.5 + sub.h_position() - rect.width / 2;
971 case dcp::HAlign::RIGHT:
972 rect.x += 1 - sub.h_position() - rect.width;
976 switch (sub.v_align()) {
977 case dcp::VAlign::TOP:
978 rect.y += sub.v_position();
980 case dcp::VAlign::CENTER:
981 rect.y += 0.5 + sub.v_position() - rect.height / 2;
983 case dcp::VAlign::BOTTOM:
984 rect.y += 1 - sub.v_position() - rect.height;
988 decoder->emit_bitmap (period, image, rect);
992 show_jobs_on_console (bool progress)
998 dcpomatic_sleep_seconds (5);
1000 auto jobs = JobManager::instance()->get();
1002 if (!first && progress) {
1003 for (size_t i = 0; i < jobs.size(); ++i) {
1004 cout << "\033[1A\033[2K";
1011 for (auto i: jobs) {
1014 if (!i->sub_name().empty()) {
1015 cout << "; " << i->sub_name();
1019 if (i->progress ()) {
1020 cout << i->status() << " \n";
1022 cout << ": Running \n";
1026 if (!progress && i->finished_in_error()) {
1027 /* We won't see this error if we haven't been showing progress,
1030 cout << i->status() << "\n";
1033 if (i->finished_in_error()) {
1038 if (!JobManager::instance()->work_to_do()) {
1046 /** XXX: could use mmap? */
1048 copy_in_bits (boost::filesystem::path from, boost::filesystem::path to, boost::function<void (float)> progress)
1050 auto f = fopen_boost (from, "rb");
1052 throw OpenFileError (from, errno, OpenFileError::READ);
1054 auto t = fopen_boost (to, "wb");
1057 throw OpenFileError (to, errno, OpenFileError::WRITE);
1060 /* on the order of a second's worth of copying */
1061 boost::uintmax_t const chunk = 20 * 1024 * 1024;
1063 auto buffer = static_cast<uint8_t*> (malloc(chunk));
1065 throw std::bad_alloc ();
1068 boost::uintmax_t const total = boost::filesystem::file_size (from);
1069 boost::uintmax_t remaining = total;
1072 boost::uintmax_t this_time = min (chunk, remaining);
1073 size_t N = fread (buffer, 1, chunk, f);
1074 if (N < this_time) {
1078 throw ReadFileError (from, errno);
1081 N = fwrite (buffer, 1, this_time, t);
1082 if (N < this_time) {
1086 throw WriteFileError (to, errno);
1089 progress (1 - float(remaining) / total);
1090 remaining -= this_time;
1099 db_to_linear (double db)
1101 return pow(10, db / 20);
1105 linear_to_db (double linear)
1107 return 20 * log10(linear);
1112 scale_for_display (dcp::Size s, dcp::Size display_container, dcp::Size film_container)
1114 /* Now scale it down if the display container is smaller than the film container */
1115 if (display_container != film_container) {
1116 float const scale = min (
1117 float (display_container.width) / film_container.width,
1118 float (display_container.height) / film_container.height
1121 s.width = lrintf (s.width * scale);
1122 s.height = lrintf (s.height * scale);
1130 decrypt_kdm_with_helpful_error (dcp::EncryptedKDM kdm)
1133 return dcp::DecryptedKDM (kdm, Config::instance()->decryption_chain()->key().get());
1134 } catch (dcp::KDMDecryptionError& e) {
1135 /* Try to flesh out the error a bit */
1136 auto const kdm_subject_name = kdm.recipient_x509_subject_name();
1137 bool on_chain = false;
1138 auto dc = Config::instance()->decryption_chain();
1139 for (auto i: dc->root_to_leaf()) {
1140 if (i.subject() == kdm_subject_name) {
1145 throw KDMError (_("This KDM was not made for DCP-o-matic's decryption certificate."), e.what());
1146 } else if (kdm_subject_name != dc->leaf().subject()) {
1147 throw KDMError (_("This KDM was made for DCP-o-matic but not for its leaf certificate."), e.what());
1155 boost::filesystem::path
1156 default_font_file ()
1158 boost::filesystem::path liberation_normal;
1160 liberation_normal = resources_path() / "LiberationSans-Regular.ttf";
1161 if (!boost::filesystem::exists (liberation_normal)) {
1162 /* Hack for unit tests */
1163 liberation_normal = resources_path() / "fonts" / "LiberationSans-Regular.ttf";
1165 } catch (boost::filesystem::filesystem_error& e) {
1169 if (!boost::filesystem::exists(liberation_normal)) {
1170 liberation_normal = "/usr/share/fonts/truetype/liberation/LiberationSans-Regular.ttf";
1173 return liberation_normal;