begin : Wed Dec 17 2003
copyright : (C) 2003 by Jason Wood
email : jasonwood@blueyonder.co.uk
+ * Copyright (C) 2010 by Jean-Baptiste Mardelle (jb@kdenlive.org) *
***************************************************************************/
/***************************************************************************
* (at your option) any later version. *
* *
***************************************************************************/
+
+/*
+
+ Timecode calculation code for reference
+ If we ever use Quicktime timecode with 50.94 Drop frame, keep in mind that there is a bug inthe Quicktime code
+
+//CONVERT A FRAME NUMBER TO DROP FRAME TIMECODE
+//Code by David Heidelberger, adapted from Andrew Duncan
+//Given an int called framenumber and a double called framerate
+//Framerate should be 29.97, 59.94, or 23.976, otherwise the calculations will be off.
+
+int d;
+int m;
+
+int dropFrames = round(framerate * .066666); //Number of frames to drop on the minute marks is the nearest integer to 6% of the framerate
+int framesPerHour = round(framerate*60*60); //Number of frames in an hour
+int framesPer24Hours = framesPerHour*24; //Number of frames in a day - timecode rolls over after 24 hours
+int framesPer10Minutes = round(framerate * 60 * 10); //Number of frames per ten minutes
+int framesPerMinute = round(framerate)*60)- dropFrames; //Number of frames per minute is the round of the framerate * 60 minus the number of dropped frames
+
+if (framenumber<0) //Negative time. Add 24 hours.
+{
+ framenumber=framesPer24Hours+framenumber;
+}
+
+//If framenumber is greater than 24 hrs, next operation will rollover clock
+framenumber = framenumber % framesPer24Hours; //% is the modulus operator, which returns a remainder. a % b = the remainder of a/b
+
+d = framenumber\framesPer10Minutes; // \ means integer division, which is a/b without a remainder. Some languages you could use floor(a/b)
+m = framenumber % framesPer10Minutes;
+
+if (m>1)
+{
+ framenumber=framenumber + (dropFrames*9*d) + dropFrames*((m-dropFrames)\framesPerMinute);
+}
+else
+{
+ framenumber = framenumber + dropFrames*9*d;
+}
+
+int frRound = round(framerate);
+int frames = framenumber % frRound;
+int seconds = (framenumber \ frRound) % 60;
+int minutes = ((framenumber \ frRound) \ 60) % 60;
+int hours = (((framenumber \ frRound) \ 60) \ 60);
+
+
+------------------------------------------------------------------------------------
+
+//CONVERT DROP FRAME TIMECODE TO A FRAME NUMBER
+//Code by David Heidelberger, adapted from Andrew Duncan
+//Given ints called hours, minutes, seconds, frames, and a double called framerate
+
+int dropFrames = round(framerate*.066666); //Number of drop frames is 6% of framerate rounded to nearest integer
+int timeBase = round(framerate); //We don’t need the exact framerate anymore, we just need it rounded to nearest integer
+
+int hourFrames = timeBase*60*60; //Number of frames per hour (non-drop)
+int minuteFrames = timeBase*60; //Number of frames per minute (non-drop)
+int totalMinutes = (60*hours) + minutes; //Total number of minuts
+int frameNumber = ((hourFrames * hours) + (minuteFrames * minutes) + (timeBase * seconds) + frames) - (dropFrames * (totalMinutes - (totalMinutes \ 10)));
+return frameNumber;
+
+*/
+
+
#include <QValidator>
#include <KDebug>
void Timecode::setFormat(double framesPerSecond, bool dropFrame, Formats format)
{
m_displayedFramesPerSecond = (int)(framesPerSecond + 0.5);
- m_dropFrame = dropFrame;
+ m_dropFrameTimecode = dropFrame;
m_format = format;
m_realFps = framesPerSecond;
- m_dropFrames = round(m_realFps * .066666); //Number of frames to drop on the minute marks is the nearest integer to 6% of the framerate
+ if (dropFrame) {
+ m_dropFrames = round(m_realFps * .066666); //Number of frames to drop on the minute marks is the nearest integer to 6% of the framerate
+ m_framesPer10Minutes = round(m_realFps * 600); //Number of frames per ten minutes
+ }
QRegExp regExp;
- if (m_dropFrame)
+ if (m_dropFrameTimecode)
regExp.setPattern("^\\d{2}:\\d{2}:\\d{2};\\d{2}$");
else
regExp.setPattern("^\\d{2}:\\d{2}:\\d{2}:\\d{2}$");
double Timecode::fps() const
{
- return m_realFps; //m_displayedFramesPerSecond;
+ return m_realFps;
}
bool Timecode::df() const
{
- return m_dropFrame;
+ return m_dropFrameTimecode;
}
const QValidator *Timecode::validator() const
QString Timecode::reformatSeparators(QString duration) const
{
- if (m_dropFrame)
+ if (m_dropFrameTimecode)
return duration.replace(8, 1, ';');
return duration.replace(8, 1, ':');
}
int Timecode::getFrameCount(const QString duration) const
{
- if (m_dropFrame) {
+ if (m_dropFrameTimecode) {
//CONVERT DROP FRAME TIMECODE TO A FRAME NUMBER
//Code by David Heidelberger, adapted from Andrew Duncan
}
int totalMinutes = (60 * hours) + minutes; //Total number of minutes
- int frameNumber = ((m_displayedFramesPerSecond * 60 * 60 * hours) + (m_displayedFramesPerSecond * 60 * minutes) + (m_displayedFramesPerSecond * seconds) + frames) - (m_dropFrames * (totalMinutes - floor(totalMinutes / 10)));
+ int frameNumber = ((m_displayedFramesPerSecond * 3600 * hours) + (m_displayedFramesPerSecond * 60 * minutes) + (m_displayedFramesPerSecond * seconds) + frames) - (m_dropFrames * (totalMinutes - floor(totalMinutes / 10)));
return frameNumber;
-
-
- //Calculate the frame count
- int dropRate = (int)((ceil(m_displayedFramesPerSecond) / 30) * 2);
- frames += ((hours * 60 + minutes) * 60 + seconds) * m_displayedFramesPerSecond;
- frames -= dropRate * ((hours * 60 + minutes) - (floor((hours * 60 + minutes) / 10)));
- return frames;
}
return (int)((duration.section(':', 0, 0).toInt()*3600.0 + duration.section(':', 1, 1).toInt()*60.0 + duration.section(':', 2, 2).toInt()) * m_realFps + duration.section(':', 3, 3).toInt());
}
const QString Timecode::getTimecodeHH_MM_SS_FF(const GenTime & time) const
{
- if (m_dropFrame)
+ if (m_dropFrameTimecode)
return getTimecodeDropFrame(time);
return getTimecodeHH_MM_SS_FF((int) time.frames(m_realFps));
const QString Timecode::getTimecodeHH_MM_SS_FF(int frames) const
{
- if (m_dropFrame) {
+ if (m_dropFrameTimecode) {
return getTimecodeDropFrame(frames);
}
int seconds = frames / m_displayedFramesPerSecond;
text.append(QString::number(minutes).rightJustified(2, '0', false));
text.append(':');
text.append(QString::number(seconds).rightJustified(2, '0', false));
- if (m_dropFrame)
+ if (m_dropFrameTimecode)
text.append(';');
else
text.append(':');
//Given an int called framenumber and a double called framerate
//Framerate should be 29.97, 59.94, or 23.976, otherwise the calculations will be off.
- int d;
- int m;
-
- //int framesPerHour = round(m_realFps * 60 * 60); //Number of frames in an hour
- //int framesPer24Hours = framesPerHour * 24; //Number of frames in a day - timecode rolls over after 24 hours
- int framesPer10Minutes = round(m_realFps * 60 * 10); //Number of frames per ten minutes
- //int framesPerMinute = round(framerate)*60)- dropFrames; //Number of frames per minute is the round of the framerate * 60 minus the number of dropped frames
-
- /*
- * The 2 check below should not be necessary in Kdenlive
- if (framenumber<0) //Negative time. Add 24 hours.
- {
- framenumber=framesPer24Hours+framenumber;
- }
-
- //If framenumber is greater than 24 hrs, next operation will rollover clock
- framenumber = framenumber % framesPer24Hours; //% is the modulus operator, which returns a remainder. a % b = the remainder of a/b
- */
-
- d = floor(framenumber / framesPer10Minutes); // \ means integer division, which is a/b without a remainder. Some languages you could use floor(a/b)
- m = framenumber % framesPer10Minutes;
+ int d = floor(framenumber / m_framesPer10Minutes);
+ int m = framenumber % m_framesPer10Minutes;
if (m > 1) {
framenumber = framenumber + (m_dropFrames * 9 * d) + m_dropFrames * (floor((m - m_dropFrames) / (round(m_realFps * 60) - m_dropFrames)));
int minutes = (int) floor(floor(framenumber / m_displayedFramesPerSecond) / 60) % 60;
int hours = floor(floor(floor(framenumber / m_displayedFramesPerSecond) / 60) / 60);
-
QString text;
text.append(QString::number(hours).rightJustified(2, '0', false));
text.append(':');
projects / kdenlive / commitdiff