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>
57 DCPOMATIC_DISABLE_WARNINGS
59 #include <libavfilter/avfilter.h>
60 #include <libavformat/avformat.h>
61 #include <libavcodec/avcodec.h>
63 DCPOMATIC_ENABLE_WARNINGS
64 #include <curl/curl.h>
66 #include <pangomm/init.h>
67 #include <unicode/utypes.h>
68 #include <unicode/unistr.h>
69 #include <unicode/translit.h>
70 #include <boost/algorithm/string.hpp>
71 #include <boost/range/algorithm/replace_if.hpp>
72 #include <boost/thread.hpp>
73 #include <boost/filesystem.hpp>
74 DCPOMATIC_DISABLE_WARNINGS
75 #include <boost/locale.hpp>
76 DCPOMATIC_ENABLE_WARNINGS
77 #ifdef DCPOMATIC_WINDOWS
78 #include <boost/locale.hpp>
87 #ifdef DCPOMATIC_POSIX
108 using std::bad_alloc;
109 using std::set_terminate;
110 using std::make_pair;
111 using std::shared_ptr;
112 using std::make_shared;
114 using boost::optional;
115 using boost::lexical_cast;
116 using boost::bad_lexical_cast;
117 using boost::scoped_array;
119 using dcp::raw_convert;
120 using dcp::locale_convert;
121 using namespace dcpomatic;
123 /** Path to our executable, required by the stacktrace stuff and filled
124 * in during App::onInit().
127 bool is_batch_converter = false;
128 static boost::thread::id ui_thread;
129 static boost::filesystem::path backtrace_file;
131 /** Convert some number of seconds to a string representation
132 * in hours, minutes and seconds.
135 * @return String of the form H:M:S (where H is hours, M
136 * is minutes and S is seconds).
139 seconds_to_hms (int s)
147 snprintf (buffer, sizeof(buffer), "%d:%02d:%02d", h, m, s);
152 time_to_hmsf (DCPTime time, Frame rate)
154 Frame f = time.frames_round (rate);
163 snprintf (buffer, sizeof(buffer), "%d:%02d:%02d.%d", h, m, s, static_cast<int>(f));
167 /** @param s Number of seconds.
168 * @return String containing an approximate description of s (e.g. "about 2 hours")
171 seconds_to_approximate_hms (int s)
181 bool minutes = h < 6 && m > 0;
182 bool seconds = h == 0 && m < 10 && s > 0;
184 if (m > 30 && !minutes) {
185 /* round up the hours */
188 if (s > 30 && !seconds) {
189 /* round up the minutes */
199 /// TRANSLATORS: h here is an abbreviation for hours
200 ap += locale_convert<string>(h) + _("h");
202 if (minutes || seconds) {
208 /// TRANSLATORS: m here is an abbreviation for minutes
209 ap += locale_convert<string>(m) + _("m");
218 /// TRANSLATORS: s here is an abbreviation for seconds
219 ap += locale_convert<string>(s) + _("s");
226 seconds (struct timeval t)
228 return t.tv_sec + (double (t.tv_usec) / 1e6);
231 #ifdef DCPOMATIC_WINDOWS
233 /** Resolve symbol name and source location given the path to the executable */
235 addr2line (void const * const addr)
237 char addr2line_cmd[512] = { 0 };
238 sprintf (addr2line_cmd, "addr2line -f -p -e %.256s %p > %s", program_name.c_str(), addr, backtrace_file.string().c_str());
239 return system(addr2line_cmd);
242 DCPOMATIC_DISABLE_WARNINGS
243 /** This is called when C signals occur on Windows (e.g. SIGSEGV)
244 * (NOT C++ exceptions!). We write a backtrace to backtrace_file by dark means.
245 * Adapted from code here: http://spin.atomicobject.com/2013/01/13/exceptions-stack-traces-c/
248 exception_handler(struct _EXCEPTION_POINTERS * info)
250 auto f = fopen_boost (backtrace_file, "w");
251 fprintf (f, "C-style exception %d\n", info->ExceptionRecord->ExceptionCode);
254 if (info->ExceptionRecord->ExceptionCode != EXCEPTION_STACK_OVERFLOW) {
255 CONTEXT* context = info->ContextRecord;
256 SymInitialize (GetCurrentProcess (), 0, true);
258 STACKFRAME frame = { 0 };
260 /* setup initial stack frame */
262 frame.AddrPC.Offset = context->Rip;
263 frame.AddrStack.Offset = context->Rsp;
264 frame.AddrFrame.Offset = context->Rbp;
266 frame.AddrPC.Offset = context->Eip;
267 frame.AddrStack.Offset = context->Esp;
268 frame.AddrFrame.Offset = context->Ebp;
270 frame.AddrPC.Mode = AddrModeFlat;
271 frame.AddrStack.Mode = AddrModeFlat;
272 frame.AddrFrame.Mode = AddrModeFlat;
276 IMAGE_FILE_MACHINE_I386,
277 GetCurrentProcess (),
282 SymFunctionTableAccess,
287 addr2line((void *) frame.AddrPC.Offset);
291 addr2line ((void *) info->ContextRecord->Rip);
293 addr2line ((void *) info->ContextRecord->Eip);
297 return EXCEPTION_CONTINUE_SEARCH;
299 DCPOMATIC_ENABLE_WARNINGS
303 set_backtrace_file (boost::filesystem::path p)
308 /** This is called when there is an unhandled exception. Any
309 * backtrace in this function is useless on Windows as the stack has
310 * already been unwound from the throw; we have the gdb wrap hack to
317 static bool tried_throw = false;
318 // try once to re-throw currently active exception
324 catch (const std::exception &e) {
325 std::cerr << __FUNCTION__ << " caught unhandled exception. what(): "
326 << e.what() << std::endl;
329 std::cerr << __FUNCTION__ << " caught unknown/unhandled exception."
337 dcpomatic_setup_path_encoding ()
339 #ifdef DCPOMATIC_WINDOWS
340 /* Dark voodoo which, I think, gets boost::filesystem::path to
341 correctly convert UTF-8 strings to paths, and also paths
342 back to UTF-8 strings (on path::string()).
344 After this, constructing boost::filesystem::paths from strings
345 converts from UTF-8 to UTF-16 inside the path. Then
346 path::string().c_str() gives UTF-8 and
347 path::c_str() gives UTF-16.
349 This is all Windows-only. AFAICT Linux/OS X use UTF-8 everywhere,
350 so things are much simpler.
352 std::locale::global (boost::locale::generator().generate (""));
353 boost::filesystem::path::imbue (std::locale ());
357 /** Call the required functions to set up DCP-o-matic's static arrays, etc.
358 * Must be called from the UI thread, if there is one.
363 #ifdef DCPOMATIC_WINDOWS
364 boost::filesystem::path p = g_get_user_config_dir ();
365 p /= "backtrace.txt";
366 set_backtrace_file (p);
367 SetUnhandledExceptionFilter(exception_handler);
370 DCPOMATIC_DISABLE_WARNINGS
372 avfilter_register_all ();
373 DCPOMATIC_ENABLE_WARNINGS
376 /* Add our library directory to the libltdl search path so that
377 xmlsec can find xmlsec1-openssl.
379 auto lib = directory_containing_executable().parent_path();
381 setenv ("LTDL_LIBRARY_PATH", lib.c_str (), 1);
384 set_terminate (terminate);
386 #ifdef DCPOMATIC_WINDOWS
387 putenv ("PANGOCAIRO_BACKEND=fontconfig");
388 putenv (String::compose("FONTCONFIG_PATH=%1", resources_path().string()).c_str());
392 setenv ("PANGOCAIRO_BACKEND", "fontconfig", 1);
393 setenv ("FONTCONFIG_PATH", resources_path().string().c_str(), 1);
397 dcp::init (tags_path());
399 #if defined(DCPOMATIC_WINDOWS) || defined(DCPOMATIC_OSX)
400 /* Render something to fontconfig to create its cache */
401 list<StringText> subs;
402 dcp::SubtitleString ss(
403 optional<string>(), false, false, false, dcp::Colour(), 42, 1, dcp::Time(), dcp::Time(), 0, dcp::HAlign::CENTER, 0, dcp::VAlign::CENTER, dcp::Direction::LTR,
404 "Hello dolly", dcp::Effect::NONE, dcp::Colour(), dcp::Time(), dcp::Time()
406 subs.push_back (StringText(ss, 0));
407 render_text (subs, list<shared_ptr<Font>>(), dcp::Size(640, 480), DCPTime(), 24);
410 Ratio::setup_ratios ();
411 PresetColourConversion::setup_colour_conversion_presets ();
412 DCPContentType::setup_dcp_content_types ();
413 Filter::setup_filters ();
414 CinemaSoundProcessor::setup_cinema_sound_processors ();
415 AudioProcessor::setup_audio_processors ();
417 curl_global_init (CURL_GLOBAL_ALL);
419 ui_thread = boost::this_thread::get_id ();
422 #ifdef DCPOMATIC_WINDOWS
423 boost::filesystem::path
427 GetModuleFileName (0, buffer, 512 * sizeof(wchar_t));
428 boost::filesystem::path p (buffer);
429 p = p.parent_path ();
430 p = p.parent_path ();
437 boost::filesystem::path
440 return "DCP-o-matic 2.app/Contents/Resources";
445 dcpomatic_setup_gettext_i18n (string lang)
447 #ifdef DCPOMATIC_LINUX
451 if (!lang.empty ()) {
452 /* Override our environment language. Note that the caller must not
453 free the string passed into putenv().
455 string s = String::compose ("LANGUAGE=%1", lang);
456 putenv (strdup (s.c_str ()));
457 s = String::compose ("LANG=%1", lang);
458 putenv (strdup (s.c_str ()));
459 s = String::compose ("LC_ALL=%1", lang);
460 putenv (strdup (s.c_str ()));
463 setlocale (LC_ALL, "");
464 textdomain ("libdcpomatic2");
466 #if defined(DCPOMATIC_WINDOWS) || defined(DCPOMATIC_OSX)
467 bindtextdomain ("libdcpomatic2", mo_path().string().c_str());
468 bind_textdomain_codeset ("libdcpomatic2", "UTF8");
471 #ifdef DCPOMATIC_LINUX
472 bindtextdomain ("libdcpomatic2", LINUX_LOCALE_PREFIX);
476 /** Compute a digest of the first and last `size' bytes of a set of files. */
478 digest_head_tail (vector<boost::filesystem::path> files, boost::uintmax_t size)
480 boost::scoped_array<char> buffer (new char[size]);
484 boost::uintmax_t to_do = size;
485 char* p = buffer.get ();
487 while (i < int64_t (files.size()) && to_do > 0) {
488 auto f = fopen_boost (files[i], "rb");
490 throw OpenFileError (files[i].string(), errno, OpenFileError::READ);
493 boost::uintmax_t this_time = min (to_do, boost::filesystem::file_size (files[i]));
494 checked_fread (p, this_time, f, files[i]);
501 digester.add (buffer.get(), size - to_do);
506 i = files.size() - 1;
507 while (i >= 0 && to_do > 0) {
508 auto f = fopen_boost (files[i], "rb");
510 throw OpenFileError (files[i].string(), errno, OpenFileError::READ);
513 boost::uintmax_t this_time = min (to_do, boost::filesystem::file_size (files[i]));
514 dcpomatic_fseek (f, -this_time, SEEK_END);
515 checked_fread (p, this_time, f, files[i]);
522 digester.add (buffer.get(), size - to_do);
524 return digester.get ();
527 /** Round a number up to the nearest multiple of another number.
529 * @param stride Array of numbers to round, indexed by c.
530 * @param t Multiple to round to.
531 * @return Rounded number.
534 stride_round_up (int c, int const * stride, int t)
536 int const a = stride[c] + (t - 1);
540 /** Trip an assert if the caller is not in the UI thread */
544 DCPOMATIC_ASSERT (boost::this_thread::get_id() == ui_thread);
548 audio_channel_name (int c)
550 DCPOMATIC_ASSERT (MAX_DCP_AUDIO_CHANNELS == 16);
552 /// TRANSLATORS: these are the names of audio channels; Lfe (sub) is the low-frequency
553 /// enhancement channel (sub-woofer).
554 string const channels[] = {
561 _("Hearing impaired"),
562 _("Visually impaired"),
565 _("Left rear surround"),
566 _("Right rear surround"),
568 _("D-BOX secondary"),
577 short_audio_channel_name (int c)
579 DCPOMATIC_ASSERT (MAX_DCP_AUDIO_CHANNELS == 16);
581 /// TRANSLATORS: these are short names of audio channels; Lfe is the low-frequency
582 /// enhancement channel (sub-woofer). HI is the hearing-impaired audio track and
583 /// VI is the visually-impaired audio track (audio describe). DBP is the D-BOX
584 /// primary channel and DBS is the D-BOX secondary channel.
585 string const channels[] = {
609 valid_image_file (boost::filesystem::path f)
611 if (boost::starts_with (f.leaf().string(), "._")) {
615 auto ext = f.extension().string();
616 transform (ext.begin(), ext.end(), ext.begin(), ::tolower);
618 ext == ".tif" || ext == ".tiff" || ext == ".jpg" || ext == ".jpeg" ||
619 ext == ".png" || ext == ".bmp" || ext == ".tga" || ext == ".dpx" ||
620 ext == ".j2c" || ext == ".j2k" || ext == ".jp2" || ext == ".exr" ||
621 ext == ".jpf" || ext == ".psd"
626 valid_sound_file (boost::filesystem::path f)
628 if (boost::starts_with (f.leaf().string(), "._")) {
632 auto ext = f.extension().string();
633 transform (ext.begin(), ext.end(), ext.begin(), ::tolower);
634 return (ext == ".wav" || ext == ".mp3" || ext == ".aif" || ext == ".aiff");
638 valid_j2k_file (boost::filesystem::path f)
640 auto ext = f.extension().string();
641 transform (ext.begin(), ext.end(), ext.begin(), ::tolower);
642 return (ext == ".j2k" || ext == ".j2c" || ext == ".jp2");
646 tidy_for_filename (string f)
648 boost::replace_if (f, boost::is_any_of ("\\/:"), '_');
653 fit_ratio_within (float ratio, dcp::Size full_frame)
655 if (ratio < full_frame.ratio ()) {
656 return dcp::Size (lrintf (full_frame.height * ratio), full_frame.height);
659 return dcp::Size (full_frame.width, lrintf (full_frame.width / ratio));
663 wrapped_av_malloc (size_t s)
665 auto p = av_malloc (s);
673 split_get_request (string url)
676 AWAITING_QUESTION_MARK,
679 } state = AWAITING_QUESTION_MARK;
681 map<string, string> r;
684 for (size_t i = 0; i < url.length(); ++i) {
686 case AWAITING_QUESTION_MARK:
701 r.insert (make_pair (k, v));
711 if (state == VALUE) {
712 r.insert (make_pair (k, v));
719 video_asset_filename (shared_ptr<dcp::PictureAsset> asset, int reel_index, int reel_count, optional<string> summary)
721 dcp::NameFormat::Map values;
723 values['r'] = raw_convert<string> (reel_index + 1);
724 values['n'] = raw_convert<string> (reel_count);
726 values['c'] = careful_string_filter (summary.get());
728 return Config::instance()->dcp_asset_filename_format().get(values, "_" + asset->id() + ".mxf");
732 audio_asset_filename (shared_ptr<dcp::SoundAsset> asset, int reel_index, int reel_count, optional<string> summary)
734 dcp::NameFormat::Map values;
736 values['r'] = raw_convert<string> (reel_index + 1);
737 values['n'] = raw_convert<string> (reel_count);
739 values['c'] = careful_string_filter (summary.get());
741 return Config::instance()->dcp_asset_filename_format().get(values, "_" + asset->id() + ".mxf");
746 atmos_asset_filename (shared_ptr<dcp::AtmosAsset> asset, int reel_index, int reel_count, optional<string> summary)
748 dcp::NameFormat::Map values;
749 values['t'] = "atmos";
750 values['r'] = raw_convert<string> (reel_index + 1);
751 values['n'] = raw_convert<string> (reel_count);
753 values['c'] = careful_string_filter (summary.get());
755 return Config::instance()->dcp_asset_filename_format().get(values, "_" + asset->id() + ".mxf");
760 relaxed_string_to_float (string s)
763 boost::algorithm::replace_all (s, ",", ".");
764 return lexical_cast<float> (s);
765 } catch (bad_lexical_cast &) {
766 boost::algorithm::replace_all (s, ".", ",");
767 return lexical_cast<float> (s);
772 careful_string_filter (string s)
774 /* Filter out `bad' characters which `may' cause problems with some systems (either for DCP name or filename).
775 There's no apparent list of what really is allowed, so this is a guess.
776 Safety first and all that.
779 /* First transliterate using libicu to try to remove accents in a "nice" way */
780 auto icu_utf16 = icu::UnicodeString::fromUTF8(icu::StringPiece(s));
781 auto status = U_ZERO_ERROR;
782 auto transliterator = icu::Transliterator::createInstance("NFD; [:M:] Remove; NFC", UTRANS_FORWARD, status);
783 transliterator->transliterate(icu_utf16);
785 icu_utf16.toUTF8String(s);
787 /* Then remove anything that's not in a very limited character set */
788 wstring ws = boost::locale::conv::utf_to_utf<wchar_t>(s);
790 string const allowed = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz-_%.+";
791 for (size_t i = 0; i < ws.size(); ++i) {
793 if (allowed.find(c) != string::npos) {
798 return boost::locale::conv::utf_to_utf<char>(out);
801 /** @param mapped List of mapped audio channels from a Film.
802 * @param channels Total number of channels in the Film.
803 * @return First: number of non-LFE soundtrack channels (L/R/C/Ls/Rs/Lc/Rc/Bsl/Bsr), second: number of LFE channels.
806 audio_channel_types (list<int> mapped, int channels)
811 for (auto i: mapped) {
813 /* This channel is mapped but is not included in the DCP */
817 switch (static_cast<dcp::Channel>(i)) {
818 case dcp::Channel::LFE:
821 case dcp::Channel::LEFT:
822 case dcp::Channel::RIGHT:
823 case dcp::Channel::CENTRE:
824 case dcp::Channel::LS:
825 case dcp::Channel::RS:
826 case dcp::Channel::BSL:
827 case dcp::Channel::BSR:
830 case dcp::Channel::HI:
831 case dcp::Channel::VI:
832 case dcp::Channel::MOTION_DATA:
833 case dcp::Channel::SYNC_SIGNAL:
834 case dcp::Channel::SIGN_LANGUAGE:
835 case dcp::Channel::CHANNEL_COUNT:
840 return make_pair (non_lfe, lfe);
843 shared_ptr<AudioBuffers>
844 remap (shared_ptr<const AudioBuffers> input, int output_channels, AudioMapping map)
846 auto mapped = make_shared<AudioBuffers>(output_channels, input->frames());
847 mapped->make_silent ();
849 int to_do = min (map.input_channels(), input->channels());
851 for (int i = 0; i < to_do; ++i) {
852 for (int j = 0; j < mapped->channels(); ++j) {
853 if (map.get(i, j) > 0) {
854 mapped->accumulate_channel(
868 increment_eyes (Eyes e)
870 if (e == Eyes::LEFT) {
878 checked_fwrite (void const * ptr, size_t size, FILE* stream, boost::filesystem::path path)
880 size_t N = fwrite (ptr, 1, size, stream);
882 if (ferror(stream)) {
884 throw FileError (String::compose("fwrite error %1", errno), path);
887 throw FileError ("Unexpected short write", path);
893 checked_fread (void* ptr, size_t size, FILE* stream, boost::filesystem::path path)
895 size_t N = fread (ptr, 1, size, stream);
897 if (ferror(stream)) {
899 throw FileError (String::compose("fread error %1", errno), path);
902 throw FileError ("Unexpected short read", path);
908 utf8_strlen (string s)
910 size_t const len = s.length ();
912 for (size_t i = 0; i < len; ++i) {
913 unsigned char c = s[i];
914 if ((c & 0xe0) == 0xc0) {
916 } else if ((c & 0xf0) == 0xe0) {
918 } else if ((c & 0xf8) == 0xf0) {
927 day_of_week_to_string (boost::gregorian::greg_weekday d)
929 switch (d.as_enum()) {
930 case boost::date_time::Sunday:
932 case boost::date_time::Monday:
934 case boost::date_time::Tuesday:
936 case boost::date_time::Wednesday:
937 return _("Wednesday");
938 case boost::date_time::Thursday:
939 return _("Thursday");
940 case boost::date_time::Friday:
942 case boost::date_time::Saturday:
943 return _("Saturday");
946 return d.as_long_string ();
949 /** @param size Size of picture that the subtitle will be overlaid onto */
951 emit_subtitle_image (ContentTimePeriod period, dcp::SubtitleImage sub, dcp::Size size, shared_ptr<TextDecoder> decoder)
953 /* XXX: this is rather inefficient; decoding the image just to get its size */
954 FFmpegImageProxy proxy (sub.png_image(), VideoRange::FULL);
955 auto image = proxy.image().image;
956 /* set up rect with height and width */
957 dcpomatic::Rect<double> rect(0, 0, image->size().width / double(size.width), image->size().height / double(size.height));
959 /* add in position */
961 switch (sub.h_align()) {
962 case dcp::HAlign::LEFT:
963 rect.x += sub.h_position();
965 case dcp::HAlign::CENTER:
966 rect.x += 0.5 + sub.h_position() - rect.width / 2;
968 case dcp::HAlign::RIGHT:
969 rect.x += 1 - sub.h_position() - rect.width;
973 switch (sub.v_align()) {
974 case dcp::VAlign::TOP:
975 rect.y += sub.v_position();
977 case dcp::VAlign::CENTER:
978 rect.y += 0.5 + sub.v_position() - rect.height / 2;
980 case dcp::VAlign::BOTTOM:
981 rect.y += 1 - sub.v_position() - rect.height;
985 decoder->emit_bitmap (period, image, rect);
989 show_jobs_on_console (bool progress)
995 dcpomatic_sleep_seconds (5);
997 auto jobs = JobManager::instance()->get();
999 if (!first && progress) {
1000 for (size_t i = 0; i < jobs.size(); ++i) {
1001 cout << "\033[1A\033[2K";
1008 for (auto i: jobs) {
1011 if (!i->sub_name().empty()) {
1012 cout << "; " << i->sub_name();
1016 if (i->progress ()) {
1017 cout << i->status() << " \n";
1019 cout << ": Running \n";
1023 if (!progress && i->finished_in_error()) {
1024 /* We won't see this error if we haven't been showing progress,
1027 cout << i->status() << "\n";
1030 if (i->finished_in_error()) {
1035 if (!JobManager::instance()->work_to_do()) {
1043 /** XXX: could use mmap? */
1045 copy_in_bits (boost::filesystem::path from, boost::filesystem::path to, std::function<void (float)> progress)
1047 auto f = fopen_boost (from, "rb");
1049 throw OpenFileError (from, errno, OpenFileError::READ);
1051 auto t = fopen_boost (to, "wb");
1054 throw OpenFileError (to, errno, OpenFileError::WRITE);
1057 /* on the order of a second's worth of copying */
1058 boost::uintmax_t const chunk = 20 * 1024 * 1024;
1060 auto buffer = static_cast<uint8_t*> (malloc(chunk));
1062 throw std::bad_alloc ();
1065 boost::uintmax_t const total = boost::filesystem::file_size (from);
1066 boost::uintmax_t remaining = total;
1069 boost::uintmax_t this_time = min (chunk, remaining);
1070 size_t N = fread (buffer, 1, chunk, f);
1071 if (N < this_time) {
1075 throw ReadFileError (from, errno);
1078 N = fwrite (buffer, 1, this_time, t);
1079 if (N < this_time) {
1083 throw WriteFileError (to, errno);
1086 progress (1 - float(remaining) / total);
1087 remaining -= this_time;
1096 db_to_linear (double db)
1098 return pow(10, db / 20);
1102 linear_to_db (double linear)
1104 return 20 * log10(linear);
1109 scale_for_display (dcp::Size s, dcp::Size display_container, dcp::Size film_container)
1111 /* Now scale it down if the display container is smaller than the film container */
1112 if (display_container != film_container) {
1113 float const scale = min (
1114 float (display_container.width) / film_container.width,
1115 float (display_container.height) / film_container.height
1118 s.width = lrintf (s.width * scale);
1119 s.height = lrintf (s.height * scale);
1127 decrypt_kdm_with_helpful_error (dcp::EncryptedKDM kdm)
1130 return dcp::DecryptedKDM (kdm, Config::instance()->decryption_chain()->key().get());
1131 } catch (dcp::KDMDecryptionError& e) {
1132 /* Try to flesh out the error a bit */
1133 auto const kdm_subject_name = kdm.recipient_x509_subject_name();
1134 bool on_chain = false;
1135 auto dc = Config::instance()->decryption_chain();
1136 for (auto i: dc->root_to_leaf()) {
1137 if (i.subject() == kdm_subject_name) {
1142 throw KDMError (_("This KDM was not made for DCP-o-matic's decryption certificate."), e.what());
1143 } else if (kdm_subject_name != dc->leaf().subject()) {
1144 throw KDMError (_("This KDM was made for DCP-o-matic but not for its leaf certificate."), e.what());
1152 boost::filesystem::path
1153 default_font_file ()
1155 boost::filesystem::path liberation_normal;
1157 liberation_normal = resources_path() / "LiberationSans-Regular.ttf";
1158 if (!boost::filesystem::exists (liberation_normal)) {
1159 /* Hack for unit tests */
1160 liberation_normal = resources_path() / "fonts" / "LiberationSans-Regular.ttf";
1162 } catch (boost::filesystem::filesystem_error& e) {
1166 if (!boost::filesystem::exists(liberation_normal)) {
1167 liberation_normal = "/usr/share/fonts/truetype/liberation/LiberationSans-Regular.ttf";
1170 return liberation_normal;
1177 transform (s.begin(), s.end(), s.begin(), ::toupper);
1182 /* Set to 1 to print the IDs of some of our threads to stdout on creation */
1183 #define DCPOMATIC_DEBUG_THREADS 0
1185 #if DCPOMATIC_DEBUG_THREADS
1187 start_of_thread (string name)
1189 std::cout << "THREAD:" << name << ":" << std::hex << pthread_self() << "\n";
1193 start_of_thread (string)