1 /***************************************************************************
4 begin : Wed Dec 17 2003
5 copyright : (C) 2003 by Jason Wood
6 email : jasonwood@blueyonder.co.uk
7 * Copyright (C) 2010 by Jean-Baptiste Mardelle (jb@kdenlive.org) *
8 ***************************************************************************/
10 /***************************************************************************
12 * This program is free software; you can redistribute it and/or modify *
13 * it under the terms of the GNU General Public License as published by *
14 * the Free Software Foundation; either version 2 of the License, or *
15 * (at your option) any later version. *
17 ***************************************************************************/
21 Timecode calculation code for reference
22 If we ever use Quicktime timecode with 50.94 Drop frame, keep in mind that there is a bug inthe Quicktime code
24 //CONVERT A FRAME NUMBER TO DROP FRAME TIMECODE
25 //Code by David Heidelberger, adapted from Andrew Duncan
26 //Given an int called framenumber and a double called framerate
27 //Framerate should be 29.97, 59.94, or 23.976, otherwise the calculations will be off.
32 int dropFrames = round(framerate * .066666); //Number of frames to drop on the minute marks is the nearest integer to 6% of the framerate
33 int framesPerHour = round(framerate*60*60); //Number of frames in an hour
34 int framesPer24Hours = framesPerHour*24; //Number of frames in a day - timecode rolls over after 24 hours
35 int framesPer10Minutes = round(framerate * 60 * 10); //Number of frames per ten minutes
36 int framesPerMinute = round(framerate)*60)- dropFrames; //Number of frames per minute is the round of the framerate * 60 minus the number of dropped frames
38 if (framenumber<0) //Negative time. Add 24 hours.
40 framenumber=framesPer24Hours+framenumber;
43 //If framenumber is greater than 24 hrs, next operation will rollover clock
44 framenumber = framenumber % framesPer24Hours; //% is the modulus operator, which returns a remainder. a % b = the remainder of a/b
46 d = framenumber\framesPer10Minutes; // \ means integer division, which is a/b without a remainder. Some languages you could use floor(a/b)
47 m = framenumber % framesPer10Minutes;
51 framenumber=framenumber + (dropFrames*9*d) + dropFrames*((m-dropFrames)\framesPerMinute);
55 framenumber = framenumber + dropFrames*9*d;
58 int frRound = round(framerate);
59 int frames = framenumber % frRound;
60 int seconds = (framenumber \ frRound) % 60;
61 int minutes = ((framenumber \ frRound) \ 60) % 60;
62 int hours = (((framenumber \ frRound) \ 60) \ 60);
65 ------------------------------------------------------------------------------------
67 //CONVERT DROP FRAME TIMECODE TO A FRAME NUMBER
68 //Code by David Heidelberger, adapted from Andrew Duncan
69 //Given ints called hours, minutes, seconds, frames, and a double called framerate
71 int dropFrames = round(framerate*.066666); //Number of drop frames is 6% of framerate rounded to nearest integer
72 int timeBase = round(framerate); //We don’t need the exact framerate anymore, we just need it rounded to nearest integer
74 int hourFrames = timeBase*60*60; //Number of frames per hour (non-drop)
75 int minuteFrames = timeBase*60; //Number of frames per minute (non-drop)
76 int totalMinutes = (60*hours) + minutes; //Total number of minuts
77 int frameNumber = ((hourFrames * hours) + (minuteFrames * minutes) + (timeBase * seconds) + frames) - (dropFrames * (totalMinutes - (totalMinutes \ 10)));
89 Timecode::Timecode(Formats format, double framesPerSecond)
91 setFormat(framesPerSecond, format);
98 void Timecode::setFormat(double framesPerSecond, Formats format)
100 m_displayedFramesPerSecond = (int)(framesPerSecond + 0.5);
101 m_dropFrameTimecode = (framesPerSecond / 1.00 != (int)framesPerSecond) ;
103 m_realFps = framesPerSecond;
104 if (m_dropFrameTimecode) {
105 m_dropFrames = round(m_realFps * .066666); //Number of frames to drop on the minute marks is the nearest integer to 6% of the framerate
106 m_framesPer10Minutes = round(m_realFps * 600); //Number of frames per ten minutes
110 double Timecode::fps() const
115 bool Timecode::df() const
117 return m_dropFrameTimecode;
120 const QString Timecode::mask(GenTime t) const
123 if (m_dropFrameTimecode) return "#99:99:99,99";
124 else return "#99:99:99:99";
126 if (m_dropFrameTimecode) return "99:99:99,99";
127 else return "99:99:99:99";
130 QString Timecode::reformatSeparators(QString duration) const
132 if (m_dropFrameTimecode)
133 return duration.replace(8, 1, ',');
134 return duration.replace(8, 1, ':');
137 int Timecode::getDisplayFrameCount(const QString &duration, bool frameDisplay) const
139 if (frameDisplay) return duration.toInt();
140 return getFrameCount(duration);
143 int Timecode::getFrameCount(const QString &duration) const
145 int hours, minutes, seconds, frames;
147 if (duration.at(0) == '-') {
149 hours = duration.mid(1, 2).toInt();
151 else hours = duration.left(2).toInt();
152 minutes = duration.mid(3 + offset, 2).toInt();
153 seconds = duration.mid(6 + offset, 2).toInt();
154 frames = duration.right(2).toInt();
155 if (m_dropFrameTimecode) {
156 //CONVERT DROP FRAME TIMECODE TO A FRAME NUMBER
157 //Code by David Heidelberger, adapted from Andrew Duncan
158 //Given ints called hours, minutes, seconds, frames, and a double called framerate
160 int totalMinutes = (60 * hours) + minutes; //Total number of minutes
161 int frameNumber = ((m_displayedFramesPerSecond * 3600 * hours) + (m_displayedFramesPerSecond * 60 * minutes) + (m_displayedFramesPerSecond * seconds) + frames) - (m_dropFrames * (totalMinutes - floor(totalMinutes / 10)));
164 return (int)(hours * 3600.0 + minutes * 60.0 + seconds * m_realFps + frames);
167 QString Timecode::getDisplayTimecode(const GenTime & time, bool frameDisplay) const
169 if (frameDisplay) return QString::number((int) time.frames(m_realFps));
170 return getTimecode(time);
173 QString Timecode::getTimecode(const GenTime & time) const
177 return getTimecodeHH_MM_SS_FF(time);
180 return getTimecodeHH_MM_SS_HH(time);
183 return getTimecodeFrames(time);
186 return getTimecodeSeconds(time);
190 "Unknown timecode format specified, defaulting to HH_MM_SS_FF"
192 return getTimecodeHH_MM_SS_FF(time);
196 const QString Timecode::getDisplayTimecodeFromFrames(int frames, bool frameDisplay) const
198 if (frameDisplay) return QString::number(frames);
199 return getTimecodeHH_MM_SS_FF(frames);
202 const QString Timecode::getTimecodeFromFrames(int frames) const
204 return getTimecodeHH_MM_SS_FF(frames);
209 QString Timecode::getStringTimecode(int frames, const double &fps)
211 // Returns the timecode in an hh:mm:ss format
213 bool negative = false;
216 frames = qAbs(frames);
219 int seconds = (int)(frames / fps);
220 int minutes = seconds / 60;
221 seconds = seconds % 60;
222 int hours = minutes / 60;
223 minutes = minutes % 60;
227 text.append(QString::number(hours).rightJustified(2, '0', false));
229 text.append(QString::number(minutes).rightJustified(2, '0', false));
231 text.append(QString::number(seconds).rightJustified(2, '0', false));
237 QString Timecode::getEasyTimecode(const GenTime & time, const double &fps)
239 // Returns the timecode in an easily read display, like 3 min. 5 sec.
240 int frames = (int) time.frames(fps);
242 bool negative = false;
245 frames = qAbs(frames);
248 int seconds = (int)(frames / fps);
249 frames = frames - ((int)(fps * seconds));
251 int minutes = seconds / 60;
252 seconds = seconds % 60;
253 int hours = minutes / 60;
254 minutes = minutes % 60;
262 text.append(QString::number(hours).rightJustified(2, '0', false));
263 text.append(' ' + i18n("hour") + ' ');
266 if (minutes != 0 || trim) {
268 text.append(QString::number(minutes));
270 text.append(QString::number(minutes).rightJustified(2, '0', false));
271 text.append(' ' + i18n("min.") + ' ');
274 if (seconds != 0 || trim) {
276 text.append(QString::number(seconds));
278 text.append(QString::number(seconds).rightJustified(2, '0', false));
279 text.append(' ' + i18n("sec."));
283 text.append(QString::number(frames));
284 text.append(' ' + i18n("frames"));
291 const QString Timecode::getTimecodeHH_MM_SS_FF(const GenTime & time) const
293 if (m_dropFrameTimecode) {
294 return getTimecodeDropFrame(time);
296 return getTimecodeHH_MM_SS_FF((int) time.frames(m_realFps));
299 const QString Timecode::getTimecodeHH_MM_SS_FF(int frames) const
301 if (m_dropFrameTimecode) {
302 return getTimecodeDropFrame(frames);
305 bool negative = false;
308 frames = qAbs(frames);
311 int seconds = frames / m_displayedFramesPerSecond;
312 frames = frames % m_displayedFramesPerSecond;
314 int minutes = seconds / 60;
315 seconds = seconds % 60;
316 int hours = minutes / 60;
317 minutes = minutes % 60;
322 text.append(QString::number(hours).rightJustified(2, '0', false));
324 text.append(QString::number(minutes).rightJustified(2, '0', false));
326 text.append(QString::number(seconds).rightJustified(2, '0', false));
328 text.append(QString::number(frames).rightJustified(2, '0', false));
333 const QString Timecode::getTimecodeHH_MM_SS_HH(const GenTime & time) const
335 int hundredths = (int)(time.seconds() * 100);
337 bool negative = false;
338 if (hundredths < 0) {
340 hundredths = qAbs(hundredths);
343 int seconds = hundredths / 100;
344 hundredths = hundredths % 100;
345 int minutes = seconds / 60;
346 seconds = seconds % 60;
347 int hours = minutes / 60;
348 minutes = minutes % 60;
353 text.append(QString::number(hours).rightJustified(2, '0', false));
355 text.append(QString::number(minutes).rightJustified(2, '0', false));
357 text.append(QString::number(seconds).rightJustified(2, '0', false));
358 if (m_dropFrameTimecode)
362 text.append(QString::number(hundredths).rightJustified(2, '0', false));
367 const QString Timecode::getTimecodeFrames(const GenTime & time) const
369 return QString::number((int) time.frames(m_realFps));
372 const QString Timecode::getTimecodeSeconds(const GenTime & time) const
375 return locale.toString(time.seconds());
378 const QString Timecode::getTimecodeDropFrame(const GenTime & time) const
380 return getTimecodeDropFrame((int)time.frames(m_realFps));
383 const QString Timecode::getTimecodeDropFrame(int framenumber) const
385 //CONVERT A FRAME NUMBER TO DROP FRAME TIMECODE
386 //Based on code by David Heidelberger, adapted from Andrew Duncan
387 //Given an int called framenumber and a double called framerate
388 //Framerate should be 29.97, 59.94, or 23.976, otherwise the calculations will be off.
390 bool negative = false;
391 if (framenumber < 0) {
393 framenumber = qAbs(framenumber);
396 int d = floor(framenumber / m_framesPer10Minutes);
397 int m = framenumber % m_framesPer10Minutes;
399 if (m > m_dropFrames) {
400 framenumber += (m_dropFrames * 9 * d) + m_dropFrames * (floor((m - m_dropFrames) / (round(m_realFps * 60) - m_dropFrames)));
402 framenumber += m_dropFrames * 9 * d;
405 int frames = framenumber % m_displayedFramesPerSecond;
406 int seconds = (int) floor(framenumber / m_displayedFramesPerSecond) % 60;
407 int minutes = (int) floor(floor(framenumber / m_displayedFramesPerSecond) / 60) % 60;
408 int hours = floor(floor(floor(framenumber / m_displayedFramesPerSecond) / 60) / 60);
413 text.append(QString::number(hours).rightJustified(2, '0', false));
415 text.append(QString::number(minutes).rightJustified(2, '0', false));
417 text.append(QString::number(seconds).rightJustified(2, '0', false));
419 text.append(QString::number(frames).rightJustified(2, '0', false));