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.
28 #include "exceptions.h"
29 #include "dcp_content_type.h"
31 #include "cinema_sound_processor.h"
36 #include "video_content.h"
39 #include "audio_processor.h"
41 #include "compose.hpp"
42 #include "audio_buffers.h"
43 #include "string_text.h"
45 #include "render_text.h"
46 #include "ffmpeg_image_proxy.h"
48 #include "text_decoder.h"
49 #include "job_manager.h"
51 #include <dcp/decrypted_kdm.h>
52 #include <dcp/locale_convert.h>
54 #include <dcp/raw_convert.h>
55 #include <dcp/picture_asset.h>
56 #include <dcp/sound_asset.h>
57 #include <dcp/subtitle_asset.h>
58 #include <dcp/atmos_asset.h>
59 DCPOMATIC_DISABLE_WARNINGS
61 #include <libavfilter/avfilter.h>
62 #include <libavformat/avformat.h>
63 #include <libavcodec/avcodec.h>
65 DCPOMATIC_ENABLE_WARNINGS
66 #include <curl/curl.h>
68 #include <pangomm/init.h>
69 #include <unicode/utypes.h>
70 #include <unicode/unistr.h>
71 #include <unicode/translit.h>
72 #include <boost/algorithm/string.hpp>
73 #include <boost/range/algorithm/replace_if.hpp>
74 #include <boost/thread.hpp>
75 #include <boost/filesystem.hpp>
76 DCPOMATIC_DISABLE_WARNINGS
77 #include <boost/locale.hpp>
78 DCPOMATIC_ENABLE_WARNINGS
79 #ifdef DCPOMATIC_WINDOWS
80 #include <boost/locale.hpp>
89 #ifdef DCPOMATIC_POSIX
110 using std::bad_alloc;
111 using std::set_terminate;
112 using std::make_pair;
113 using std::shared_ptr;
114 using std::make_shared;
116 using boost::optional;
117 using boost::lexical_cast;
118 using boost::bad_lexical_cast;
119 using boost::scoped_array;
121 using dcp::raw_convert;
122 using dcp::locale_convert;
123 using namespace dcpomatic;
125 /** Path to our executable, required by the stacktrace stuff and filled
126 * in during App::onInit().
129 bool is_batch_converter = false;
130 static boost::thread::id ui_thread;
131 static boost::filesystem::path backtrace_file;
133 /** Convert some number of seconds to a string representation
134 * in hours, minutes and seconds.
137 * @return String of the form H:M:S (where H is hours, M
138 * is minutes and S is seconds).
141 seconds_to_hms (int s)
149 snprintf (buffer, sizeof(buffer), "%d:%02d:%02d", h, m, s);
154 time_to_hmsf (DCPTime time, Frame rate)
156 Frame f = time.frames_round (rate);
165 snprintf (buffer, sizeof(buffer), "%d:%02d:%02d.%d", h, m, s, static_cast<int>(f));
169 /** @param s Number of seconds.
170 * @return String containing an approximate description of s (e.g. "about 2 hours")
173 seconds_to_approximate_hms (int s)
183 bool minutes = h < 6 && m > 0;
184 bool seconds = h == 0 && m < 10 && s > 0;
186 if (m > 30 && !minutes) {
187 /* round up the hours */
190 if (s > 30 && !seconds) {
191 /* round up the minutes */
201 /// TRANSLATORS: h here is an abbreviation for hours
202 ap += locale_convert<string>(h) + _("h");
204 if (minutes || seconds) {
210 /// TRANSLATORS: m here is an abbreviation for minutes
211 ap += locale_convert<string>(m) + _("m");
220 /// TRANSLATORS: s here is an abbreviation for seconds
221 ap += locale_convert<string>(s) + _("s");
228 seconds (struct timeval t)
230 return t.tv_sec + (double (t.tv_usec) / 1e6);
233 #ifdef DCPOMATIC_WINDOWS
235 /** Resolve symbol name and source location given the path to the executable */
237 addr2line (void const * const addr)
239 char addr2line_cmd[512] = { 0 };
240 sprintf (addr2line_cmd, "addr2line -f -p -e %.256s %p > %s", program_name.c_str(), addr, backtrace_file.string().c_str());
241 return system(addr2line_cmd);
244 DCPOMATIC_DISABLE_WARNINGS
245 /** This is called when C signals occur on Windows (e.g. SIGSEGV)
246 * (NOT C++ exceptions!). We write a backtrace to backtrace_file by dark means.
247 * Adapted from code here: http://spin.atomicobject.com/2013/01/13/exceptions-stack-traces-c/
250 exception_handler(struct _EXCEPTION_POINTERS * info)
252 auto f = fopen_boost (backtrace_file, "w");
253 fprintf (f, "C-style exception %d\n", info->ExceptionRecord->ExceptionCode);
256 if (info->ExceptionRecord->ExceptionCode != EXCEPTION_STACK_OVERFLOW) {
257 CONTEXT* context = info->ContextRecord;
258 SymInitialize (GetCurrentProcess (), 0, true);
260 STACKFRAME frame = { 0 };
262 /* setup initial stack frame */
264 frame.AddrPC.Offset = context->Rip;
265 frame.AddrStack.Offset = context->Rsp;
266 frame.AddrFrame.Offset = context->Rbp;
268 frame.AddrPC.Offset = context->Eip;
269 frame.AddrStack.Offset = context->Esp;
270 frame.AddrFrame.Offset = context->Ebp;
272 frame.AddrPC.Mode = AddrModeFlat;
273 frame.AddrStack.Mode = AddrModeFlat;
274 frame.AddrFrame.Mode = AddrModeFlat;
278 IMAGE_FILE_MACHINE_I386,
279 GetCurrentProcess (),
284 SymFunctionTableAccess,
289 addr2line((void *) frame.AddrPC.Offset);
293 addr2line ((void *) info->ContextRecord->Rip);
295 addr2line ((void *) info->ContextRecord->Eip);
299 return EXCEPTION_CONTINUE_SEARCH;
301 DCPOMATIC_ENABLE_WARNINGS
305 set_backtrace_file (boost::filesystem::path p)
310 /** This is called when there is an unhandled exception. Any
311 * backtrace in this function is useless on Windows as the stack has
312 * already been unwound from the throw; we have the gdb wrap hack to
319 static bool tried_throw = false;
320 // try once to re-throw currently active exception
326 catch (const std::exception &e) {
327 std::cerr << __FUNCTION__ << " caught unhandled exception. what(): "
328 << e.what() << std::endl;
331 std::cerr << __FUNCTION__ << " caught unknown/unhandled exception."
339 dcpomatic_setup_path_encoding ()
341 #ifdef DCPOMATIC_WINDOWS
342 /* Dark voodoo which, I think, gets boost::filesystem::path to
343 correctly convert UTF-8 strings to paths, and also paths
344 back to UTF-8 strings (on path::string()).
346 After this, constructing boost::filesystem::paths from strings
347 converts from UTF-8 to UTF-16 inside the path. Then
348 path::string().c_str() gives UTF-8 and
349 path::c_str() gives UTF-16.
351 This is all Windows-only. AFAICT Linux/OS X use UTF-8 everywhere,
352 so things are much simpler.
354 std::locale::global (boost::locale::generator().generate (""));
355 boost::filesystem::path::imbue (std::locale ());
359 /** Call the required functions to set up DCP-o-matic's static arrays, etc.
360 * Must be called from the UI thread, if there is one.
365 #ifdef DCPOMATIC_WINDOWS
366 boost::filesystem::path p = g_get_user_config_dir ();
367 p /= "backtrace.txt";
368 set_backtrace_file (p);
369 SetUnhandledExceptionFilter(exception_handler);
372 #ifdef DCPOMATIC_HAVE_AVREGISTER
373 DCPOMATIC_DISABLE_WARNINGS
375 avfilter_register_all ();
376 DCPOMATIC_ENABLE_WARNINGS
380 /* Add our library directory to the libltdl search path so that
381 xmlsec can find xmlsec1-openssl.
383 auto lib = directory_containing_executable().parent_path();
385 setenv ("LTDL_LIBRARY_PATH", lib.c_str (), 1);
388 set_terminate (terminate);
390 #ifdef DCPOMATIC_WINDOWS
391 putenv ("PANGOCAIRO_BACKEND=fontconfig");
392 putenv (String::compose("FONTCONFIG_PATH=%1", resources_path().string()).c_str());
396 setenv ("PANGOCAIRO_BACKEND", "fontconfig", 1);
397 setenv ("FONTCONFIG_PATH", resources_path().string().c_str(), 1);
401 dcp::init (tags_path());
403 #if defined(DCPOMATIC_WINDOWS) || defined(DCPOMATIC_OSX)
404 /* Render something to fontconfig to create its cache */
405 list<StringText> subs;
406 dcp::SubtitleString ss(
407 optional<string>(), false, false, false, dcp::Colour(), 42, 1, dcp::Time(), dcp::Time(), 0, dcp::HAlign::CENTER, 0, dcp::VAlign::CENTER, dcp::Direction::LTR,
408 "Hello dolly", dcp::Effect::NONE, dcp::Colour(), dcp::Time(), dcp::Time()
410 subs.push_back (StringText(ss, 0));
411 render_text (subs, list<shared_ptr<Font>>(), dcp::Size(640, 480), DCPTime(), 24);
414 Ratio::setup_ratios ();
415 PresetColourConversion::setup_colour_conversion_presets ();
416 DCPContentType::setup_dcp_content_types ();
417 Filter::setup_filters ();
418 CinemaSoundProcessor::setup_cinema_sound_processors ();
419 AudioProcessor::setup_audio_processors ();
421 curl_global_init (CURL_GLOBAL_ALL);
423 ui_thread = boost::this_thread::get_id ();
426 #ifdef DCPOMATIC_WINDOWS
427 boost::filesystem::path
431 GetModuleFileName (0, buffer, 512 * sizeof(wchar_t));
432 boost::filesystem::path p (buffer);
433 p = p.parent_path ();
434 p = p.parent_path ();
441 boost::filesystem::path
444 return "DCP-o-matic 2.app/Contents/Resources";
449 dcpomatic_setup_gettext_i18n (string lang)
451 #ifdef DCPOMATIC_LINUX
455 if (!lang.empty ()) {
456 /* Override our environment language. Note that the caller must not
457 free the string passed into putenv().
459 string s = String::compose ("LANGUAGE=%1", lang);
460 putenv (strdup (s.c_str ()));
461 s = String::compose ("LANG=%1", lang);
462 putenv (strdup (s.c_str ()));
463 s = String::compose ("LC_ALL=%1", lang);
464 putenv (strdup (s.c_str ()));
467 setlocale (LC_ALL, "");
468 textdomain ("libdcpomatic2");
470 #if defined(DCPOMATIC_WINDOWS) || defined(DCPOMATIC_OSX)
471 bindtextdomain ("libdcpomatic2", mo_path().string().c_str());
472 bind_textdomain_codeset ("libdcpomatic2", "UTF8");
475 #ifdef DCPOMATIC_LINUX
476 bindtextdomain ("libdcpomatic2", LINUX_LOCALE_PREFIX);
480 /** Compute a digest of the first and last `size' bytes of a set of files. */
482 digest_head_tail (vector<boost::filesystem::path> files, boost::uintmax_t size)
484 boost::scoped_array<char> buffer (new char[size]);
488 boost::uintmax_t to_do = size;
489 char* p = buffer.get ();
491 while (i < int64_t (files.size()) && to_do > 0) {
492 auto f = fopen_boost (files[i], "rb");
494 throw OpenFileError (files[i].string(), errno, OpenFileError::READ);
497 boost::uintmax_t this_time = min (to_do, boost::filesystem::file_size (files[i]));
498 checked_fread (p, this_time, f, files[i]);
505 digester.add (buffer.get(), size - to_do);
510 i = files.size() - 1;
511 while (i >= 0 && to_do > 0) {
512 auto f = fopen_boost (files[i], "rb");
514 throw OpenFileError (files[i].string(), errno, OpenFileError::READ);
517 boost::uintmax_t this_time = min (to_do, boost::filesystem::file_size (files[i]));
518 dcpomatic_fseek (f, -this_time, SEEK_END);
519 checked_fread (p, this_time, f, files[i]);
526 digester.add (buffer.get(), size - to_do);
528 return digester.get ();
531 /** Round a number up to the nearest multiple of another number.
533 * @param stride Array of numbers to round, indexed by c.
534 * @param t Multiple to round to.
535 * @return Rounded number.
538 stride_round_up (int c, int const * stride, int t)
540 int const a = stride[c] + (t - 1);
544 /** Trip an assert if the caller is not in the UI thread */
548 DCPOMATIC_ASSERT (boost::this_thread::get_id() == ui_thread);
552 audio_channel_name (int c)
554 DCPOMATIC_ASSERT (MAX_DCP_AUDIO_CHANNELS == 16);
556 /// TRANSLATORS: these are the names of audio channels; Lfe (sub) is the low-frequency
557 /// enhancement channel (sub-woofer).
558 string const channels[] = {
565 _("Hearing impaired"),
566 _("Visually impaired"),
569 _("Left rear surround"),
570 _("Right rear surround"),
572 _("D-BOX secondary"),
581 short_audio_channel_name (int c)
583 DCPOMATIC_ASSERT (MAX_DCP_AUDIO_CHANNELS == 16);
585 /// TRANSLATORS: these are short names of audio channels; Lfe is the low-frequency
586 /// enhancement channel (sub-woofer). HI is the hearing-impaired audio track and
587 /// VI is the visually-impaired audio track (audio describe). DBP is the D-BOX
588 /// primary channel and DBS is the D-BOX secondary channel.
589 string const channels[] = {
613 valid_image_file (boost::filesystem::path f)
615 if (boost::starts_with (f.leaf().string(), "._")) {
619 auto ext = f.extension().string();
620 transform (ext.begin(), ext.end(), ext.begin(), ::tolower);
622 ext == ".tif" || ext == ".tiff" || ext == ".jpg" || ext == ".jpeg" ||
623 ext == ".png" || ext == ".bmp" || ext == ".tga" || ext == ".dpx" ||
624 ext == ".j2c" || ext == ".j2k" || ext == ".jp2" || ext == ".exr" ||
625 ext == ".jpf" || ext == ".psd"
630 valid_sound_file (boost::filesystem::path f)
632 if (boost::starts_with (f.leaf().string(), "._")) {
636 auto ext = f.extension().string();
637 transform (ext.begin(), ext.end(), ext.begin(), ::tolower);
638 return (ext == ".wav" || ext == ".mp3" || ext == ".aif" || ext == ".aiff");
642 valid_j2k_file (boost::filesystem::path f)
644 auto ext = f.extension().string();
645 transform (ext.begin(), ext.end(), ext.begin(), ::tolower);
646 return (ext == ".j2k" || ext == ".j2c" || ext == ".jp2");
650 tidy_for_filename (string f)
652 boost::replace_if (f, boost::is_any_of ("\\/:"), '_');
657 fit_ratio_within (float ratio, dcp::Size full_frame)
659 if (ratio < full_frame.ratio ()) {
660 return dcp::Size (lrintf (full_frame.height * ratio), full_frame.height);
663 return dcp::Size (full_frame.width, lrintf (full_frame.width / ratio));
667 wrapped_av_malloc (size_t s)
669 auto p = av_malloc (s);
677 split_get_request (string url)
680 AWAITING_QUESTION_MARK,
683 } state = AWAITING_QUESTION_MARK;
685 map<string, string> r;
688 for (size_t i = 0; i < url.length(); ++i) {
690 case AWAITING_QUESTION_MARK:
705 r.insert (make_pair (k, v));
715 if (state == VALUE) {
716 r.insert (make_pair (k, v));
723 video_asset_filename (shared_ptr<dcp::PictureAsset> asset, int reel_index, int reel_count, optional<string> summary)
725 dcp::NameFormat::Map values;
727 values['r'] = raw_convert<string> (reel_index + 1);
728 values['n'] = raw_convert<string> (reel_count);
730 values['c'] = careful_string_filter (summary.get());
732 return Config::instance()->dcp_asset_filename_format().get(values, "_" + asset->id() + ".mxf");
736 audio_asset_filename (shared_ptr<dcp::SoundAsset> asset, int reel_index, int reel_count, optional<string> summary)
738 dcp::NameFormat::Map values;
740 values['r'] = raw_convert<string> (reel_index + 1);
741 values['n'] = raw_convert<string> (reel_count);
743 values['c'] = careful_string_filter (summary.get());
745 return Config::instance()->dcp_asset_filename_format().get(values, "_" + asset->id() + ".mxf");
750 atmos_asset_filename (shared_ptr<dcp::AtmosAsset> asset, int reel_index, int reel_count, optional<string> summary)
752 dcp::NameFormat::Map values;
753 values['t'] = "atmos";
754 values['r'] = raw_convert<string> (reel_index + 1);
755 values['n'] = raw_convert<string> (reel_count);
757 values['c'] = careful_string_filter (summary.get());
759 return Config::instance()->dcp_asset_filename_format().get(values, "_" + asset->id() + ".mxf");
764 relaxed_string_to_float (string s)
767 boost::algorithm::replace_all (s, ",", ".");
768 return lexical_cast<float> (s);
769 } catch (bad_lexical_cast &) {
770 boost::algorithm::replace_all (s, ".", ",");
771 return lexical_cast<float> (s);
776 careful_string_filter (string s)
778 /* Filter out `bad' characters which `may' cause problems with some systems (either for DCP name or filename).
779 There's no apparent list of what really is allowed, so this is a guess.
780 Safety first and all that.
783 /* First transliterate using libicu to try to remove accents in a "nice" way */
784 auto icu_utf16 = icu::UnicodeString::fromUTF8(icu::StringPiece(s));
785 auto status = U_ZERO_ERROR;
786 auto transliterator = icu::Transliterator::createInstance("NFD; [:M:] Remove; NFC", UTRANS_FORWARD, status);
787 transliterator->transliterate(icu_utf16);
789 icu_utf16.toUTF8String(s);
791 /* Then remove anything that's not in a very limited character set */
792 wstring ws = boost::locale::conv::utf_to_utf<wchar_t>(s);
794 string const allowed = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz-_%.+";
795 for (size_t i = 0; i < ws.size(); ++i) {
797 if (allowed.find(c) != string::npos) {
802 return boost::locale::conv::utf_to_utf<char>(out);
805 /** @param mapped List of mapped audio channels from a Film.
806 * @param channels Total number of channels in the Film.
807 * @return First: number of non-LFE soundtrack channels (L/R/C/Ls/Rs/Lc/Rc/Bsl/Bsr), second: number of LFE channels.
810 audio_channel_types (list<int> mapped, int channels)
815 for (auto i: mapped) {
817 /* This channel is mapped but is not included in the DCP */
821 switch (static_cast<dcp::Channel>(i)) {
822 case dcp::Channel::LFE:
825 case dcp::Channel::LEFT:
826 case dcp::Channel::RIGHT:
827 case dcp::Channel::CENTRE:
828 case dcp::Channel::LS:
829 case dcp::Channel::RS:
830 case dcp::Channel::BSL:
831 case dcp::Channel::BSR:
834 case dcp::Channel::HI:
835 case dcp::Channel::VI:
836 case dcp::Channel::MOTION_DATA:
837 case dcp::Channel::SYNC_SIGNAL:
838 case dcp::Channel::SIGN_LANGUAGE:
839 case dcp::Channel::CHANNEL_COUNT:
844 return make_pair (non_lfe, lfe);
847 shared_ptr<AudioBuffers>
848 remap (shared_ptr<const AudioBuffers> input, int output_channels, AudioMapping map)
850 auto mapped = make_shared<AudioBuffers>(output_channels, input->frames());
851 mapped->make_silent ();
853 int to_do = min (map.input_channels(), input->channels());
855 for (int i = 0; i < to_do; ++i) {
856 for (int j = 0; j < mapped->channels(); ++j) {
857 if (map.get(i, j) > 0) {
858 mapped->accumulate_channel(
872 increment_eyes (Eyes e)
874 if (e == Eyes::LEFT) {
882 checked_fwrite (void const * ptr, size_t size, FILE* stream, boost::filesystem::path path)
884 size_t N = fwrite (ptr, 1, size, stream);
886 if (ferror(stream)) {
888 throw FileError (String::compose("fwrite error %1", errno), path);
891 throw FileError ("Unexpected short write", path);
897 checked_fread (void* ptr, size_t size, FILE* stream, boost::filesystem::path path)
899 size_t N = fread (ptr, 1, size, stream);
901 if (ferror(stream)) {
903 throw FileError (String::compose("fread error %1", errno), path);
906 throw FileError ("Unexpected short read", path);
912 utf8_strlen (string s)
914 size_t const len = s.length ();
916 for (size_t i = 0; i < len; ++i) {
917 unsigned char c = s[i];
918 if ((c & 0xe0) == 0xc0) {
920 } else if ((c & 0xf0) == 0xe0) {
922 } else if ((c & 0xf8) == 0xf0) {
931 day_of_week_to_string (boost::gregorian::greg_weekday d)
933 switch (d.as_enum()) {
934 case boost::date_time::Sunday:
936 case boost::date_time::Monday:
938 case boost::date_time::Tuesday:
940 case boost::date_time::Wednesday:
941 return _("Wednesday");
942 case boost::date_time::Thursday:
943 return _("Thursday");
944 case boost::date_time::Friday:
946 case boost::date_time::Saturday:
947 return _("Saturday");
950 return d.as_long_string ();
953 /** @param size Size of picture that the subtitle will be overlaid onto */
955 emit_subtitle_image (ContentTimePeriod period, dcp::SubtitleImage sub, dcp::Size size, shared_ptr<TextDecoder> decoder)
957 /* XXX: this is rather inefficient; decoding the image just to get its size */
958 FFmpegImageProxy proxy (sub.png_image());
959 auto image = proxy.image().image;
960 /* set up rect with height and width */
961 dcpomatic::Rect<double> rect(0, 0, image->size().width / double(size.width), image->size().height / double(size.height));
963 /* add in position */
965 switch (sub.h_align()) {
966 case dcp::HAlign::LEFT:
967 rect.x += sub.h_position();
969 case dcp::HAlign::CENTER:
970 rect.x += 0.5 + sub.h_position() - rect.width / 2;
972 case dcp::HAlign::RIGHT:
973 rect.x += 1 - sub.h_position() - rect.width;
977 switch (sub.v_align()) {
978 case dcp::VAlign::TOP:
979 rect.y += sub.v_position();
981 case dcp::VAlign::CENTER:
982 rect.y += 0.5 + sub.v_position() - rect.height / 2;
984 case dcp::VAlign::BOTTOM:
985 rect.y += 1 - sub.v_position() - rect.height;
989 decoder->emit_bitmap (period, image, rect);
993 show_jobs_on_console (bool progress)
999 dcpomatic_sleep_seconds (5);
1001 auto jobs = JobManager::instance()->get();
1003 if (!first && progress) {
1004 for (size_t i = 0; i < jobs.size(); ++i) {
1005 cout << "\033[1A\033[2K";
1012 for (auto i: jobs) {
1015 if (!i->sub_name().empty()) {
1016 cout << "; " << i->sub_name();
1020 if (i->progress ()) {
1021 cout << i->status() << " \n";
1023 cout << ": Running \n";
1027 if (!progress && i->finished_in_error()) {
1028 /* We won't see this error if we haven't been showing progress,
1031 cout << i->status() << "\n";
1034 if (i->finished_in_error()) {
1039 if (!JobManager::instance()->work_to_do()) {
1047 /** XXX: could use mmap? */
1049 copy_in_bits (boost::filesystem::path from, boost::filesystem::path to, std::function<void (float)> progress)
1051 auto f = fopen_boost (from, "rb");
1053 throw OpenFileError (from, errno, OpenFileError::READ);
1055 auto t = fopen_boost (to, "wb");
1058 throw OpenFileError (to, errno, OpenFileError::WRITE);
1061 /* on the order of a second's worth of copying */
1062 boost::uintmax_t const chunk = 20 * 1024 * 1024;
1064 auto buffer = static_cast<uint8_t*> (malloc(chunk));
1066 throw std::bad_alloc ();
1069 boost::uintmax_t const total = boost::filesystem::file_size (from);
1070 boost::uintmax_t remaining = total;
1073 boost::uintmax_t this_time = min (chunk, remaining);
1074 size_t N = fread (buffer, 1, chunk, f);
1075 if (N < this_time) {
1079 throw ReadFileError (from, errno);
1082 N = fwrite (buffer, 1, this_time, t);
1083 if (N < this_time) {
1087 throw WriteFileError (to, errno);
1090 progress (1 - float(remaining) / total);
1091 remaining -= this_time;
1100 db_to_linear (double db)
1102 return pow(10, db / 20);
1106 linear_to_db (double linear)
1108 return 20 * log10(linear);
1113 scale_for_display (dcp::Size s, dcp::Size display_container, dcp::Size film_container)
1115 /* Now scale it down if the display container is smaller than the film container */
1116 if (display_container != film_container) {
1117 float const scale = min (
1118 float (display_container.width) / film_container.width,
1119 float (display_container.height) / film_container.height
1122 s.width = lrintf (s.width * scale);
1123 s.height = lrintf (s.height * scale);
1131 decrypt_kdm_with_helpful_error (dcp::EncryptedKDM kdm)
1134 return dcp::DecryptedKDM (kdm, Config::instance()->decryption_chain()->key().get());
1135 } catch (dcp::KDMDecryptionError& e) {
1136 /* Try to flesh out the error a bit */
1137 auto const kdm_subject_name = kdm.recipient_x509_subject_name();
1138 bool on_chain = false;
1139 auto dc = Config::instance()->decryption_chain();
1140 for (auto i: dc->root_to_leaf()) {
1141 if (i.subject() == kdm_subject_name) {
1146 throw KDMError (_("This KDM was not made for DCP-o-matic's decryption certificate."), e.what());
1147 } else if (kdm_subject_name != dc->leaf().subject()) {
1148 throw KDMError (_("This KDM was made for DCP-o-matic but not for its leaf certificate."), e.what());
1156 boost::filesystem::path
1157 default_font_file ()
1159 boost::filesystem::path liberation_normal;
1161 liberation_normal = resources_path() / "LiberationSans-Regular.ttf";
1162 if (!boost::filesystem::exists (liberation_normal)) {
1163 /* Hack for unit tests */
1164 liberation_normal = resources_path() / "fonts" / "LiberationSans-Regular.ttf";
1166 } catch (boost::filesystem::filesystem_error& e) {
1170 if (!boost::filesystem::exists(liberation_normal)) {
1171 liberation_normal = "/usr/share/fonts/truetype/liberation/LiberationSans-Regular.ttf";
1174 return liberation_normal;
1181 transform (s.begin(), s.end(), s.begin(), ::toupper);
1186 /* Set to 1 to print the IDs of some of our threads to stdout on creation */
1187 #define DCPOMATIC_DEBUG_THREADS 0
1189 #if DCPOMATIC_DEBUG_THREADS
1191 start_of_thread (string name)
1193 std::cout << "THREAD:" << name << ":" << std::hex << pthread_self() << "\n";
1197 start_of_thread (string)