public static TimeSpan LTCTimecodeToTimeSpan(this string timeCode, TSMPTEFrameRate rate = TSMPTEFrameRate.SMPTERate25fps)
{
if (!validateLTC.IsMatch(timeCode))
throw new FormatException("Bad LTC timecode format");
int frames = Int32.Parse(timeCode.Substring(0, 2));
int seconds = Int32.Parse(timeCode.Substring(2, 2));
int minutes = Int32.Parse(timeCode.Substring(4, 2));
int hours = Int32.Parse(timeCode.Substring(6));
int days = hours / 24;
hours = hours % 24;
if ((hours > 24) || (minutes >= 60) || (seconds >= 60) || (frames >= (int)rate))
throw new FormatException("LTC Timecode out of range");
return new TimeSpan(days, hours, minutes, seconds, frames * 1000 / (int)rate);
}
public static bool IsValidSMPTETimecode(this string timeCode, TSMPTEFrameRate rate = TSMPTEFrameRate.SMPTERate25fps)
{
string[] times = timeCode.Split(':');
if (times.Length < 4 || times.Length > 5)
return false;
int index = -1;
int days = 0;
int hours, minutes, seconds, frames;
if (!((times.Length == 5 && int.TryParse(times[++index], out days) || times.Length == 4)
&& int.TryParse(times[++index], out hours)
&& int.TryParse(times[++index], out minutes)
&& int.TryParse(times[++index], out seconds)
&& int.TryParse(times[++index], out frames)))
return false;
if ((days != 0 && hours < 0)
|| (Math.Abs(hours) >= 24)
|| minutes >= 60 || minutes < 0 || seconds >= 60 || seconds < 0 || frames >= (int)rate || frames < 0)
return false;
return true;
}
public static TimeSpan SMPTETimecodeToTimeSpan(this string timeCode, TSMPTEFrameRate rate = TSMPTEFrameRate.SMPTERate25fps)
{
string[] times = timeCode.Split(':');
if (times.Length < 4 || times.Length > 5)
throw new FormatException("Bad SMPTE timecode format");
int index = -1;
int days = 0;
int hours, minutes, seconds, frames;
if (!((times.Length == 5 && int.TryParse(times[++index], out days) || times.Length == 4)
&& int.TryParse(times[++index], out hours)
&& int.TryParse(times[++index], out minutes)
&& int.TryParse(times[++index], out seconds)
&& int.TryParse(times[++index], out frames)))
throw new FormatException("Bad SMPTE timecode content");
if ((days != 0 && hours < 0)
|| (Math.Abs(hours) >= 24)
|| minutes >= 60 || minutes < 0 || seconds >= 60 || seconds < 0 || frames >= (int)rate || frames < 0)
throw new FormatException("SMPTE Timecode out of range");
if (days < 0)
return - new TimeSpan(Math.Abs(days), hours, minutes, seconds, frames * 1000 / (int)rate);
if (hours < 0) // was raised exception if days <> 0 and hours < 0
return - new TimeSpan(0, Math.Abs(hours), minutes, seconds, frames * 1000 / (int)rate);
return new TimeSpan(days, hours, minutes, seconds, frames * 1000 / (int)rate);
}
public static TimeSpan SMPTEFramesToTimeSpan(this long totalFrames, TSMPTEFrameRate rate = TSMPTEFrameRate.SMPTERate25fps)
{
return TimeSpan.FromTicks(totalFrames * TimeSpan.TicksPerSecond / (long)rate);
}
public static string ToSMPTETimecodeString(this TimeSpan t, TSMPTEFrameRate rate = TSMPTEFrameRate.SMPTERate25fps)
{
int framesPerSecond = (int) rate;
bool minus = t < TimeSpan.Zero;
TimeSpan value = minus ? -t : t;
int days = value.Days;
int hours = value.Hours;
int minutes = value.Minutes;
int seconds = value.Seconds;
int frames = value.Milliseconds * framesPerSecond / 1000;
if (days > 0)
return string.Format("{0}{1}:{2:D2}:{3:D2}:{4:D2}:{5:D2}", minus ? "-" : "", days, hours, minutes, seconds, frames);
else
return string.Format("{0}{1:D2}:{2:D2}:{3:D2}:{4:D2}", minus ? "-" : "", hours, minutes, seconds, frames);
}
public static long ToSMPTEFrames(this TimeSpan t, TSMPTEFrameRate rate = TSMPTEFrameRate.SMPTERate25fps)
{
return t.Ticks * (long)rate / TimeSpan.TicksPerSecond;
}
