mirror of https://github.com/odrling/Aegisub
118 lines
3.2 KiB
C++
118 lines
3.2 KiB
C++
// Copyright (c) 2014, Thomas Goyne <plorkyeran@aegisub.org>
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//
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// Permission to use, copy, modify, and distribute this software for any
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// purpose with or without fee is hereby granted, provided that the above
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// copyright notice and this permission notice appear in all copies.
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//
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// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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//
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// Aegisub Project http://www.aegisub.org/
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#include <libaegisub/ass/time.h>
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#include <libaegisub/ass/smpte.h>
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#include <libaegisub/format.h>
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#include <libaegisub/split.h>
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#include <libaegisub/util.h>
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#include <algorithm>
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// classic VSFilter internally uses a signed 32-bit int to denote milliseconds.
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// To avoid this limit to < 596h (-6 to avoid rounding up to 596h in centisecond precision)
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static const int MAX_TIME = 596 * 60 * 60 * 1000 - 6;
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static void decompose_time(int ms_time, int& h, int& m, int& s, int& ms) {
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h = ms_time / 3600000;
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ms_time -= h * 3600000;
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m = ms_time / 60000;
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ms_time -= m * 60000;
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s = ms_time / 1000;
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ms = ms_time - s * 1000;
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}
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namespace agi {
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Time::Time(int time) : time(util::mid(0, time, MAX_TIME)) { }
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Time::Time(std::string const& text) {
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int after_decimal = -1;
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int current = 0;
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for (char c : text) {
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if (c == ':') {
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time = time * 60 + current;
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current = 0;
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}
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else if (c == '.' || c == ',') {
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time = (time * 60 + current) * 1000;
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current = 0;
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after_decimal = 100;
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}
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else if (c < '0' || c > '9')
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continue;
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else if (after_decimal < 0) {
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current *= 10;
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current += c - '0';
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}
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else {
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time += (c - '0') * after_decimal;
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after_decimal /= 10;
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}
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}
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// Never saw a decimal, so convert now to ms
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if (after_decimal < 0)
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time = (time * 60 + current) * 1000;
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// Limit to the valid range
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time = util::mid(0, time, MAX_TIME);
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}
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std::string Time::GetAssFormatted(bool msPrecision) const {
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int ass_time = msPrecision ? time : int(*this);
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int h, m, s, ms;
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decompose_time(ass_time, h, m, s, ms);
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if (!msPrecision)
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return format("%d:%02d:%02d.%02d", h, m, s, ms / 10);
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else
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return format("%d:%02d:%02d.%03d", h, m, s, ms);
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}
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std::string Time::GetSrtFormatted() const {
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int h, m, s, ms;
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decompose_time(time, h, m, s, ms);
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return format("%02d:%02d:%02d,%03d", h, m, s, ms);
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}
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SmpteFormatter::SmpteFormatter(vfr::Framerate fps, char sep)
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: fps(std::move(fps))
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, sep(sep)
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{
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}
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std::string SmpteFormatter::ToSMPTE(Time time) const {
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int h=0, m=0, s=0, f=0;
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fps.SmpteAtTime(time, &h, &m, &s, &f);
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return format("%02d%c%02d%c%02d%c%02d", h, sep, m, sep, s, sep, f);
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}
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Time SmpteFormatter::FromSMPTE(std::string const& str) const {
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std::vector<std::string> toks;
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Split(toks, str, sep);
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if (toks.size() != 4) return 0;
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int h, m, s, f;
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util::try_parse(toks[0], &h);
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util::try_parse(toks[1], &m);
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util::try_parse(toks[2], &s);
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util::try_parse(toks[3], &f);
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return fps.TimeAtSmpte(h, m, s, f);
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}
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}
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