Aegisub/libaegisub/ass/time.cpp
2019-09-22 17:12:05 -07:00

117 lines
3.4 KiB
C++

// Copyright (c) 2014, Thomas Goyne <plorkyeran@aegisub.org>
//
// Permission to use, copy, modify, and distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice appear in all copies.
//
// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
//
// Aegisub Project http://www.aegisub.org/
#include <libaegisub/ass/time.h>
#include <libaegisub/ass/smpte.h>
#include <libaegisub/format.h>
#include <libaegisub/split.h>
#include <libaegisub/util.h>
#include <algorithm>
namespace agi {
Time::Time(int time) : time(util::mid(0, time, 10 * 60 * 60 * 1000 - 6)) { }
Time::Time(std::string const& text) {
int after_decimal = -1;
int current = 0;
for (char c : text) {
if (c == ':') {
time = time * 60 + current;
current = 0;
}
else if (c == '.' || c == ',') {
time = (time * 60 + current) * 1000;
current = 0;
after_decimal = 100;
}
else if (c < '0' || c > '9')
continue;
else if (after_decimal < 0) {
current *= 10;
current += c - '0';
}
else {
time += (c - '0') * after_decimal;
after_decimal /= 10;
}
}
// Never saw a decimal, so convert now to ms
if (after_decimal < 0)
time = (time * 60 + current) * 1000;
// Limit to the valid range
time = util::mid(0, time, 10 * 60 * 60 * 1000 - 6);
}
std::string Time::GetAssFormatted(bool msPrecision) const {
int ass_time = msPrecision ? time : int(*this);
std::string ret(10 + msPrecision, ':');
ret[0] = '0' + ass_time / 3600000;
ret[2] = '0' + (ass_time % (60 * 60 * 1000)) / (60 * 1000 * 10);
ret[3] = '0' + (ass_time % (10 * 60 * 1000)) / (60 * 1000);
ret[5] = '0' + (ass_time % (60 * 1000)) / (1000 * 10);
ret[6] = '0' + (ass_time % (10 * 1000)) / 1000;
ret[7] = '.';
ret[8] = '0' + (ass_time % 1000) / 100;
ret[9] = '0' + (ass_time % 100) / 10;
if (msPrecision)
ret[10] = '0' + ass_time % 10;
return ret;
}
std::string Time::GetSrtFormatted() const {
std::string ret(12, ':');
ret[0] = '0';
ret[1] = '0' + time / 3600000;
ret[3] = '0' + (time % (60 * 60 * 1000)) / (60 * 1000 * 10);
ret[4] = '0' + (time % (10 * 60 * 1000)) / (60 * 1000);
ret[6] = '0' + (time % (60 * 1000)) / (1000 * 10);
ret[7] = '0' + (time % (10 * 1000)) / 1000;
ret[8] = ',';
ret[9] = '0' + (time % 1000) / 100;
ret[10] = '0' + (time % 100) / 10;
ret[11] = '0' + time % 10;
return ret;
}
SmpteFormatter::SmpteFormatter(vfr::Framerate fps, char sep)
: fps(std::move(fps))
, sep(sep)
{
}
std::string SmpteFormatter::ToSMPTE(Time time) const {
int h=0, m=0, s=0, f=0;
fps.SmpteAtTime(time, &h, &m, &s, &f);
return format("%02d%c%02d%c%02d%c%02d", h, sep, m, sep, s, sep, f);
}
Time SmpteFormatter::FromSMPTE(std::string const& str) const {
std::vector<std::string> toks;
Split(toks, str, sep);
if (toks.size() != 4) return 0;
int h, m, s, f;
util::try_parse(toks[0], &h);
util::try_parse(toks[1], &m);
util::try_parse(toks[2], &s);
util::try_parse(toks[3], &f);
return fps.TimeAtSmpte(h, m, s, f);
}
}