forked from mia/Aegisub
534 lines
11 KiB
C++
534 lines
11 KiB
C++
// Copyright (c) 2005, Rodrigo Braz Monteiro
|
|
// All rights reserved.
|
|
//
|
|
// Redistribution and use in source and binary forms, with or without
|
|
// modification, are permitted provided that the following conditions are met:
|
|
//
|
|
// * Redistributions of source code must retain the above copyright notice,
|
|
// this list of conditions and the following disclaimer.
|
|
// * Redistributions in binary form must reproduce the above copyright notice,
|
|
// this list of conditions and the following disclaimer in the documentation
|
|
// and/or other materials provided with the distribution.
|
|
// * Neither the name of the Aegisub Group nor the names of its contributors
|
|
// may be used to endorse or promote products derived from this software
|
|
// without specific prior written permission.
|
|
//
|
|
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
|
|
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
// POSSIBILITY OF SUCH DAMAGE.
|
|
//
|
|
// Aegisub Project http://www.aegisub.org/
|
|
//
|
|
// $Id$
|
|
|
|
/// @file ass_time.cpp
|
|
/// @brief Class for managing timestamps in subtitles
|
|
/// @ingroup subs_storage
|
|
///
|
|
|
|
|
|
////////////
|
|
// Includes
|
|
#include "config.h"
|
|
|
|
#ifndef AGI_PRE
|
|
#include <math.h>
|
|
|
|
#include <algorithm>
|
|
#include <fstream>
|
|
|
|
#include <wx/regex.h>
|
|
#endif
|
|
|
|
#include "ass_time.h"
|
|
#include "utils.h"
|
|
#include "vfr.h"
|
|
|
|
|
|
/// @brief AssTime constructors AssTime //////////////////////
|
|
///
|
|
AssTime::AssTime () {
|
|
time = 0;
|
|
}
|
|
|
|
|
|
|
|
/// @brief Note that this function is atomic, it won't touch the values if it's invalid. --------------- Parses from ASS
|
|
/// @param text
|
|
/// @return
|
|
///
|
|
void AssTime::ParseASS (const wxString text) {
|
|
// Prepare
|
|
size_t pos = 0;
|
|
size_t end = 0;
|
|
long th=0,tm=0,tms=0;
|
|
|
|
// Count the number of colons
|
|
size_t len = text.Length();
|
|
int colons = 0;
|
|
for (pos=0;pos<len;pos++) if (text[pos] == _T(':')) colons++;
|
|
pos = 0;
|
|
|
|
// Set start so that there are only two colons at most
|
|
if (colons > 2) {
|
|
for (pos=0;pos<len;pos++) {
|
|
if (text[pos] == _T(':')) {
|
|
colons--;
|
|
if (colons == 2) break;
|
|
}
|
|
}
|
|
pos++;
|
|
end = pos;
|
|
}
|
|
|
|
try {
|
|
// Hours
|
|
if (colons == 2) {
|
|
while (text[end++] != _T(':')) {};
|
|
th = AegiStringToInt(text,pos,end);
|
|
pos = end;
|
|
}
|
|
|
|
// Minutes
|
|
if (colons >= 1) {
|
|
while (text[end++] != _T(':')) {};
|
|
tm = AegiStringToInt(text,pos,end);
|
|
pos = end;
|
|
}
|
|
|
|
// Miliseconds (includes seconds)
|
|
end = text.Length();
|
|
tms = AegiStringToFix(text,3,pos,end);
|
|
}
|
|
|
|
// Something went wrong, don't change anything
|
|
catch (...) {
|
|
return;
|
|
}
|
|
|
|
// OK, set values
|
|
time = tms + tm*60000 + th*3600000;
|
|
}
|
|
|
|
|
|
|
|
/// @brief Parses from SRT
|
|
/// @param _text
|
|
///
|
|
void AssTime::ParseSRT (const wxString _text) {
|
|
// Prepare
|
|
wxString text = _text;
|
|
text.Trim(false);
|
|
text.Trim(true);
|
|
long tempv;
|
|
wxString temp;
|
|
int ms,s,m,h;
|
|
|
|
// Parse
|
|
temp = text.Mid(0,2);
|
|
temp.ToLong(&tempv);
|
|
h = tempv;
|
|
temp = text.Mid(3,2);
|
|
temp.ToLong(&tempv);
|
|
m = tempv;
|
|
temp = text.Mid(6,2);
|
|
temp.ToLong(&tempv);
|
|
s = tempv;
|
|
temp = text.Mid(9,3);
|
|
temp.ToLong(&tempv);
|
|
ms = tempv;
|
|
|
|
// Set value
|
|
time = ms + s*1000 + m*60000 + h*3600000;
|
|
}
|
|
|
|
|
|
|
|
/// @brief AssTime conversion to/from miliseconds
|
|
/// @return
|
|
///
|
|
int AssTime::GetMS () const {
|
|
if (!UseMSPrecision) return time/10*10;
|
|
else return time;
|
|
}
|
|
|
|
|
|
/// @brief DOCME
|
|
/// @param _ms
|
|
///
|
|
void AssTime::SetMS (int _ms) {
|
|
time = _ms;
|
|
}
|
|
|
|
|
|
|
|
/// @brief ASS Formated
|
|
/// @param msPrecision
|
|
/// @return
|
|
///
|
|
wxString AssTime::GetASSFormated (bool msPrecision) {
|
|
int h,m,s,ms;
|
|
int _ms = time;
|
|
|
|
// Centisecond precision
|
|
msPrecision = msPrecision || UseMSPrecision;
|
|
if (!msPrecision) _ms = _ms/10*10;
|
|
|
|
// Reset
|
|
h = m = s = ms = 0;
|
|
if (_ms < 0) _ms = 0;
|
|
|
|
// Hours
|
|
while (_ms >= 3600000) {
|
|
_ms -= 3600000;
|
|
h++;
|
|
}
|
|
|
|
// Ass overflow
|
|
if (h > 9) {
|
|
h = 9;
|
|
m = 59;
|
|
s = 59;
|
|
ms = 999;
|
|
}
|
|
|
|
// Minutes
|
|
while (_ms >= 60000) {
|
|
_ms -= 60000;
|
|
m++;
|
|
}
|
|
|
|
// Seconds
|
|
while (_ms >= 1000) {
|
|
_ms -= 1000;
|
|
s++;
|
|
}
|
|
ms = _ms;
|
|
|
|
if (msPrecision) return wxString::Format(_T("%01i:%02i:%02i.%03i"),h,m,s,ms);
|
|
else return wxString::Format(_T("%01i:%02i:%02i.%02i"),h,m,s,ms/10);
|
|
}
|
|
|
|
|
|
|
|
/// @brief SRT Formated
|
|
/// @return
|
|
///
|
|
wxString AssTime::GetSRTFormated () {
|
|
int h,m,s,ms;
|
|
int _ms = time;
|
|
|
|
// Centisecond precision
|
|
if (!UseMSPrecision) _ms = _ms/10*10;
|
|
|
|
// Reset
|
|
h = m = s = ms = 0;
|
|
if (_ms < 0) _ms = 0;
|
|
|
|
// Hours
|
|
while (_ms >= 3600000) {
|
|
_ms -= 3600000;
|
|
h++;
|
|
}
|
|
|
|
// Ass overflow
|
|
if (h > 9) {
|
|
h = 9;
|
|
m = 59;
|
|
s = 59;
|
|
ms = 999;
|
|
}
|
|
|
|
// Minutes
|
|
while (_ms >= 60000) {
|
|
_ms -= 60000;
|
|
m++;
|
|
}
|
|
|
|
// Seconds
|
|
while (_ms >= 1000) {
|
|
_ms -= 1000;
|
|
s++;
|
|
}
|
|
ms = _ms;
|
|
|
|
wxString result = wxString::Format(_T("%02i:%02i:%02i,%03i"),h,m,s,ms);
|
|
return result;
|
|
}
|
|
|
|
|
|
|
|
/// @brief AssTime comparison
|
|
/// @param t1
|
|
/// @param t2
|
|
/// @return
|
|
///
|
|
bool operator < (AssTime &t1, AssTime &t2) {
|
|
return (t1.GetMS() < t2.GetMS());
|
|
}
|
|
|
|
|
|
/// @brief DOCME
|
|
/// @param t1
|
|
/// @param t2
|
|
/// @return
|
|
///
|
|
bool operator > (AssTime &t1, AssTime &t2) {
|
|
return (t1.GetMS() > t2.GetMS());
|
|
}
|
|
|
|
|
|
/// @brief DOCME
|
|
/// @param t1
|
|
/// @param t2
|
|
/// @return
|
|
///
|
|
bool operator <= (AssTime &t1, AssTime &t2) {
|
|
return (t1.GetMS() <= t2.GetMS());
|
|
}
|
|
|
|
|
|
/// @brief DOCME
|
|
/// @param t1
|
|
/// @param t2
|
|
/// @return
|
|
///
|
|
bool operator >= (AssTime &t1, AssTime &t2) {
|
|
return (t1.GetMS() >= t2.GetMS());
|
|
}
|
|
|
|
|
|
/// @brief DOCME
|
|
/// @param t1
|
|
/// @param t2
|
|
/// @return
|
|
///
|
|
bool operator == (AssTime &t1, AssTime &t2) {
|
|
return (t1.GetMS() == t2.GetMS());
|
|
}
|
|
|
|
|
|
/// @brief DOCME
|
|
/// @param t1
|
|
/// @param t2
|
|
/// @return
|
|
///
|
|
bool operator != (AssTime &t1, AssTime &t2) {
|
|
return (t1.GetMS() != t2.GetMS());
|
|
}
|
|
|
|
|
|
|
|
/// DOCME
|
|
bool AssTime::UseMSPrecision = false;
|
|
|
|
|
|
|
|
/// @brief Get
|
|
/// @return
|
|
///
|
|
int AssTime::GetTimeHours() { return time / 3600000; }
|
|
|
|
/// @brief DOCME
|
|
/// @return
|
|
///
|
|
int AssTime::GetTimeMinutes() { return (time % 3600000)/60000; }
|
|
|
|
/// @brief DOCME
|
|
/// @return
|
|
///
|
|
int AssTime::GetTimeSeconds() { return (time % 60000)/1000; }
|
|
|
|
/// @brief DOCME
|
|
/// @return
|
|
///
|
|
int AssTime::GetTimeMiliseconds() { return (time % 1000); }
|
|
|
|
/// @brief DOCME
|
|
/// @return
|
|
///
|
|
int AssTime::GetTimeCentiseconds() { return (time % 1000)/10; }
|
|
|
|
|
|
|
|
|
|
|
|
/// @brief Constructor
|
|
/// @param separator
|
|
/// @param numerator
|
|
/// @param denominator
|
|
/// @param dropframe
|
|
///
|
|
FractionalTime::FractionalTime (wxString separator, int numerator, int denominator, bool dropframe) {
|
|
drop = dropframe;
|
|
if (drop) {
|
|
// no dropframe for any other framerates
|
|
num = 30000;
|
|
den = 1001;
|
|
} else {
|
|
num = numerator;
|
|
den = denominator;
|
|
}
|
|
sep = separator;
|
|
|
|
// fractions < 1 are not welcome here
|
|
if ((num <= 0 || den <= 0) || (num < den))
|
|
throw _T("FractionalTime: nonsensical enumerator or denominator");
|
|
if (sep.IsEmpty())
|
|
throw _T("FractionalTime: no separator specified");
|
|
}
|
|
|
|
|
|
/// @brief Destructor
|
|
///
|
|
FractionalTime::~FractionalTime () {
|
|
sep.Clear();
|
|
}
|
|
|
|
|
|
/// @brief SMPTE text string to milliseconds conversion
|
|
/// @param _text
|
|
/// @return
|
|
///
|
|
int FractionalTime::ToMillisecs (wxString _text) {
|
|
wxString text = _text;
|
|
wxString re_str = _T("");
|
|
text.Trim(false);
|
|
text.Trim(true);
|
|
long h=0,m=0,s=0,f=0;
|
|
|
|
// hour minute second fraction
|
|
re_str << _T("(\\d+)") << sep << _T("(\\d+)") << sep << _T("(\\d+)") << sep << _T("(\\d+)");
|
|
|
|
wxRegEx re(re_str, wxRE_ADVANCED);
|
|
if (!re.IsValid())
|
|
throw _T("FractionalTime: regex failure");
|
|
if (!re.Matches(text))
|
|
return 0; // FIXME: throw here too?
|
|
|
|
re.GetMatch(text,1).ToLong(&h);
|
|
re.GetMatch(text,2).ToLong(&m);
|
|
re.GetMatch(text,3).ToLong(&s);
|
|
re.GetMatch(text,4).ToLong(&f);
|
|
|
|
int msecs_f = 0;
|
|
int fn = 0;
|
|
// dropframe? do silly things
|
|
if (drop) {
|
|
fn += h * frames_per_period * 6;
|
|
fn += (m % 10) * frames_per_period;
|
|
|
|
if (m > 0) {
|
|
fn += 1800;
|
|
m--;
|
|
|
|
fn += m * 1798; // two timestamps dropped per minute after the first
|
|
fn += s * 30 + f - 2;
|
|
}
|
|
else { // minute is evenly divisible by 10, keep first two timestamps
|
|
fn += s * 30;
|
|
fn += f;
|
|
}
|
|
|
|
msecs_f = (fn * num) / den;
|
|
}
|
|
// no dropframe, may or may not sync with wallclock time
|
|
// (see comment in FromMillisecs for an explanation of why it's done like this)
|
|
else {
|
|
int fps_approx = floor((double(num)/double(den))+0.5);
|
|
fn += h * 3600 * fps_approx;
|
|
fn += m * 60 * fps_approx;
|
|
fn += s * fps_approx;
|
|
fn += f;
|
|
|
|
msecs_f = (fn * num) / den;
|
|
}
|
|
|
|
return msecs_f;
|
|
}
|
|
|
|
|
|
/// @brief SMPTE text string to AssTime conversion
|
|
/// @param _text
|
|
/// @return
|
|
///
|
|
AssTime FractionalTime::ToAssTime (wxString _text) {
|
|
AssTime time;
|
|
time.SetMS((int)ToMillisecs(_text));
|
|
return time;
|
|
}
|
|
|
|
|
|
/// @brief AssTime to SMPTE text string conversion
|
|
/// @param time
|
|
/// @return
|
|
///
|
|
wxString FractionalTime::FromAssTime(AssTime time) {
|
|
return FromMillisecs(time.GetMS());
|
|
}
|
|
|
|
|
|
/// @brief Milliseconds to SMPTE text string conversion
|
|
/// @param msec
|
|
///
|
|
wxString FractionalTime::FromMillisecs(int64_t msec) {
|
|
int h=0, m=0, s=0, f=0; // hours, minutes, seconds, fractions
|
|
int fn = (msec*(int64_t)num) / (1000*den); // frame number
|
|
|
|
// return 00:00:00:00
|
|
if (msec <= 0)
|
|
goto RETURN;
|
|
|
|
// dropframe?
|
|
if (drop) {
|
|
fn += 2 * (fn / (30 * 60)) - 2 * (fn / (30 * 60 * 10));
|
|
h = fn / (30 * 60 * 60);
|
|
m = (fn / (30 * 60)) % 60;
|
|
s = (fn / 30) % 60;
|
|
f = fn % 30;
|
|
}
|
|
// no dropframe; h/m/s may or may not sync to wallclock time
|
|
else {
|
|
/*
|
|
This is truly the dumbest shit. What we're trying to ensure here
|
|
is that non-integer framerates are desynced from the wallclock
|
|
time by a correct amount of time. For example, in the
|
|
NTSC-without-dropframe case, 3600*num/den would be 107892
|
|
(when truncated to int), which is quite a good approximation of
|
|
how a long an hour is when counted in 30000/1001 frames per second.
|
|
Unfortunately, that's not what we want, since frame numbers will
|
|
still range from 00 to 29, meaning that we're really getting _30_
|
|
frames per second and not 29.97 and the full hour will be off by
|
|
almost 4 seconds (108000 frames versus 107892).
|
|
|
|
DEATH TO SMPTE
|
|
*/
|
|
int fps_approx = floor((double(num)/double(den))+0.5);
|
|
int frames_per_h = 3600*fps_approx;
|
|
int frames_per_m = 60*fps_approx;
|
|
int frames_per_s = fps_approx;
|
|
while (fn >= frames_per_h) {
|
|
h++; fn -= frames_per_h;
|
|
}
|
|
while (fn >= frames_per_m) {
|
|
m++; fn -= frames_per_m;
|
|
}
|
|
while (fn >= frames_per_s) {
|
|
s++; fn -= frames_per_s;
|
|
}
|
|
f = fn;
|
|
}
|
|
|
|
RETURN:
|
|
return wxString::Format(_T("%02i") + sep + _T("%02i") + sep + _T("%02i") + sep + _T("%02i"),h,m,s,f);
|
|
}
|
|
|
|
|