X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;f=src%2Fdcp_time.cc;h=0bd0a4096c96d47f5e0d74421ceeeabf1f31dbc0;hb=2c1faeb15715794525f48110c2b8a9df96b387c1;hp=8101bed1e38b164983a19afa3a987bb53aa7e259;hpb=2ae92dcc97765deb2845dd07a338858aeb375cb3;p=libdcp.git diff --git a/src/dcp_time.cc b/src/dcp_time.cc index 8101bed1..0bd0a409 100644 --- a/src/dcp_time.cc +++ b/src/dcp_time.cc @@ -1,53 +1,71 @@ /* - Copyright (C) 2012-2015 Carl Hetherington + Copyright (C) 2012-2021 Carl Hetherington - This program is free software; you can redistribute it and/or modify + This file is part of libdcp. + + libdcp is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. - This program is distributed in the hope that it will be useful, + libdcp is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - + along with libdcp. If not, see . + + In addition, as a special exception, the copyright holders give + permission to link the code of portions of this program with the + OpenSSL library under certain conditions as described in each + individual source file, and distribute linked combinations + including the two. + + You must obey the GNU General Public License in all respects + for all of the code used other than OpenSSL. If you modify + file(s) with this exception, you may extend this exception to your + version of the file(s), but you are not obligated to do so. If you + do not wish to do so, delete this exception statement from your + version. If you delete this exception statement from all source + files in the program, then also delete it here. */ + /** @file src/dcp_time.cc - * @brief Time class. + * @brief Time class */ + #include "raw_convert.h" #include "dcp_time.h" #include "exceptions.h" +#include "compose.hpp" +#include "dcp_assert.h" #include +#include #include #include #include + using namespace std; using namespace boost; using namespace dcp; -Time::Time (int frame, int frames_per_second, int tcr_) + +Time::Time (int frame, double frames_per_second, int tcr_) { set (double (frame) / frames_per_second, tcr_); } -/** Construct a Time with a timecode rate of 24 and using the supplied - * number of seconds. - * - * @param seconds A number of seconds. - */ -Time::Time (double seconds) + +Time::Time (double seconds, int tcr_) { - set (seconds, 24); + set (seconds, tcr_); } + /** Construct a Time with specified timecode rate and using the supplied * number of seconds. * @@ -77,46 +95,104 @@ Time::set (double seconds, int tcr_) } } -/** @param time String of the form HH:MM:SS:EE[E] */ -Time::Time (string time, int tcr_) - : tcr (tcr_) + +Time::Time (string time, optional tcr_) { vector b; split (b, time, is_any_of (":")); - if (b.size() != 4) { - boost::throw_exception (DCPReadError ("unrecognised time specification")); + + if (b.size() < 3 || b[0].empty() || b[1].empty() || b[0].length() > 2 || b[1].length() > 2) { + boost::throw_exception (ReadError (String::compose ("unrecognised time specification %1", time))); } - h = raw_convert (b[0]); - m = raw_convert (b[1]); - s = raw_convert (b[2]); - e = raw_convert (b[3]); + if (!tcr_) { + /* Interop */ + if (b.size() == 3) { + /* HH:MM:SS.s[s[s]] */ + vector bs; + split (bs, b[2], is_any_of (".")); + if (bs.size() != 2) { + boost::throw_exception (ReadError (String::compose ("unrecognised time specification %1", time))); + } + + h = raw_convert (b[0]); + m = raw_convert (b[1]); + if (bs[0].empty() || bs[0].length() > 2) { + boost::throw_exception (ReadError (String::compose ("unrecognised time specification %1; %2 has bad length", time, bs[0]))); + } + s = raw_convert (bs[0]); + if (bs[1].empty() || bs[1].length() > 3) { + boost::throw_exception (ReadError (String::compose ("unrecognised time specification %1; %2 has bad length", time, bs[1]))); + } + e = raw_convert (bs[1]); + tcr = 1000; + } else if (b.size() == 4) { + /* HH:MM:SS:EE[E] */ + h = raw_convert (b[0]); + m = raw_convert (b[1]); + if (b[2].empty() || b[2].length() > 2) { + boost::throw_exception (ReadError (String::compose ("unrecognised time specification %1; %2 has bad length", time, b[2]))); + } + s = raw_convert (b[2]); + if (b[3].empty() || b[3].length() > 3) { + boost::throw_exception (ReadError (String::compose ("unrecognised time specification %1; %2 has bad length", time, b[3]))); + } + e = raw_convert (b[3]); + tcr = 250; + } else { + boost::throw_exception (ReadError (String::compose ("unrecognised time specification %1", time))); + } + + } else { + /* SMPTE: HH:MM:SS:EE */ + split (b, time, is_any_of (":")); + if (b.size() != 4) { + boost::throw_exception (ReadError (String::compose ("unrecognised time specification %1; does not have 4 parts", time))); + } + + h = raw_convert (b[0]); + m = raw_convert (b[1]); + if (b[2].empty() || b[2].length() > 2) { + boost::throw_exception (ReadError (String::compose ("unrecognised time specification %1; %2 has bad length", time, b[2]))); + } + s = raw_convert (b[2]); + if (b[3].empty() || b[3].length() > 2) { + boost::throw_exception (ReadError (String::compose ("unrecognised time specification %1; %2 has bad length", time, b[3]))); + } + e = raw_convert (b[3]); + tcr = tcr_.get(); + } } + bool dcp::operator== (Time const & a, Time const & b) { return (a.h == b.h && a.m == b.m && a.s == b.s && (a.e * b.tcr) == (b.e * a.tcr)); } + bool dcp::operator!= (Time const & a, Time const & b) { return !(a == b); } + bool dcp::operator<= (Time const & a, Time const & b) { return a < b || a == b; } + bool dcp::operator>= (Time const & a, Time const & b) { return a > b || a == b; } + bool dcp::operator< (Time const & a, Time const & b) { @@ -132,13 +208,10 @@ dcp::operator< (Time const & a, Time const & b) return a.s < b.s; } - if ((a.e * b.tcr) != (b.e * a.tcr)) { - return (a.e * b.tcr) < (b.e * a.tcr); - } - - return true; + return (a.e * b.tcr) < (b.e * a.tcr); } + bool dcp::operator> (Time const & a, Time const & b) { @@ -154,13 +227,10 @@ dcp::operator> (Time const & a, Time const & b) return a.s > b.s; } - if ((a.e * b.tcr) != (b.e * a.tcr)) { - return (a.e * b.tcr) > (b.e * a.tcr); - } - - return true; + return (a.e * b.tcr) > (b.e * a.tcr); } + ostream & dcp::operator<< (ostream& s, Time const & t) { @@ -168,6 +238,7 @@ dcp::operator<< (ostream& s, Time const & t) return s; } + dcp::Time dcp::operator+ (Time a, Time b) { @@ -205,6 +276,7 @@ dcp::operator+ (Time a, Time b) return r; } + dcp::Time dcp::operator- (Time a, Time b) { @@ -242,6 +314,7 @@ dcp::operator- (Time a, Time b) return r; } + float dcp::operator/ (Time a, Time const & b) { @@ -250,40 +323,62 @@ dcp::operator/ (Time a, Time const & b) return float (at) / bt; } -/** @return A string of the form h:m:s:e padded as in 00:00:00:000 */ + string -Time::as_string () const +Time::as_string (Standard standard) const { - stringstream str; - str << setw(2) << setfill('0') << h << ":" - << setw(2) << setfill('0') << m << ":" - << setw(2) << setfill('0') << s << ":" - << setw(3) << setfill('0') << e; - return str.str (); + char buffer[64]; + + if (standard == Standard::SMPTE) { + snprintf (buffer, sizeof(buffer), "%02d:%02d:%02d:%02d", h, m, s, e); + } else { + snprintf (buffer, sizeof(buffer), "%02d:%02d:%02d:%03d", h, m, s, e); + } + + return buffer; } -/** @param tcr_ Timecode rate with which the return value should be counted. - * @return the total number of editable units that this time consists of at the specified timecode rate. - * For example, as_editable_units (24) returns the total time in frames at 24fps. - */ + int64_t -Time::as_editable_units (int tcr_) const +Time::as_editable_units_floor (int tcr_) const { - return (int64_t(e) * float (tcr_ / tcr)) + int64_t(s) * tcr_ + int64_t(m) * 60 * tcr_ + int64_t(h) * 60 * 60 * tcr_; + return floor(int64_t(e) * double(tcr_) / tcr) + int64_t(s) * tcr_ + int64_t(m) * 60 * tcr_ + int64_t(h) * 60 * 60 * tcr_; } -/** @return the total number of seconds that this time consists of */ + +int64_t +Time::as_editable_units_ceil (int tcr_) const +{ + return ceil(int64_t(e) * double(tcr_) / tcr) + int64_t(s) * tcr_ + int64_t(m) * 60 * tcr_ + int64_t(h) * 60 * 60 * tcr_; +} + + double Time::as_seconds () const { return h * 3600 + m * 60 + s + double(e) / tcr; } -/** @param tcr_ New timecode rate. - * @return A new Time which is this time at the spcified new timecode rate. - */ + Time Time::rebase (int tcr_) const { - return Time (h, m, s, rint (float (e) * tcr_ / tcr), tcr_); + long int e_ = lrintf (float (e) * tcr_ / tcr); + int s_ = s; + if (e_ >= tcr_) { + e_ -= tcr_; + ++s_; + } + int m_ = m; + if (s_ >= 60) { + s_ -= 60; + ++m_; + } + int h_ = h; + if (m_ >= 60) { + m_ -= 60; + ++h_; + } + + return Time (h_, m_, s_, e_, tcr_); }