357 lines
14 KiB
C#
357 lines
14 KiB
C#
|
using System;
|
||
|
|
using System.Globalization;
|
||
|
|
using System.Text.RegularExpressions;
|
||
|
|
#if TIMELINE_FRAMEACCURATE
|
||
|
|
using UnityEngine.Playables;
|
||
|
|
#endif
|
||
|
|
|
||
|
|
namespace UnityEngine.Timeline
|
||
|
|
{
|
||
|
|
/// <summary>
|
||
|
|
/// The standard frame rates supported when locking Timeline playback to frames.
|
||
|
|
/// The frame rate is expressed in frames per second (fps).
|
||
|
|
/// </summary>
|
||
|
|
public enum StandardFrameRates
|
||
|
|
{
|
||
|
|
/// <summary>
|
||
|
|
/// Represents a frame rate of 24 fps. This is the common frame rate for film.
|
||
|
|
/// </summary>
|
||
|
|
Fps24,
|
||
|
|
/// <summary>
|
||
|
|
/// Represents a drop frame rate of 23.97 fps. This is the common frame rate for NTSC film broadcast.
|
||
|
|
/// </summary>
|
||
|
|
Fps23_97,
|
||
|
|
/// <summary>
|
||
|
|
/// Represents a frame rate of 25 fps. This is commonly used for non-interlaced PAL television broadcast.
|
||
|
|
/// </summary>
|
||
|
|
Fps25,
|
||
|
|
/// <summary>
|
||
|
|
/// Represents a frame rate of 30 fps. This is commonly used for HD footage.
|
||
|
|
/// </summary>
|
||
|
|
Fps30,
|
||
|
|
/// <summary>
|
||
|
|
/// Represents a drop frame rate of 29.97 fps. This is commonly used for NTSC television broadcast.
|
||
|
|
/// </summary>
|
||
|
|
Fps29_97,
|
||
|
|
/// <summary>
|
||
|
|
/// Represents a frame rate of 50 fps. This is commonly used for interlaced PAL television broadcast.
|
||
|
|
/// </summary>
|
||
|
|
Fps50,
|
||
|
|
/// <summary>
|
||
|
|
/// Represents a frame rate of 60 fps. This is commonly used for games.
|
||
|
|
/// </summary>
|
||
|
|
Fps60,
|
||
|
|
/// <summary>
|
||
|
|
/// Represents a drop frame rate of 59.94 fps. This is commonly used for interlaced NTSC television broadcast.
|
||
|
|
/// </summary>
|
||
|
|
Fps59_94
|
||
|
|
}
|
||
|
|
|
||
|
|
// Sequence specific utilities for time manipulation
|
||
|
|
static class TimeUtility
|
||
|
|
{
|
||
|
|
// chosen because it will cause no rounding errors between time/frames for frames values up to at least 10 million
|
||
|
|
public static readonly double kTimeEpsilon = 1e-14;
|
||
|
|
public static readonly double kFrameRateEpsilon = 1e-6;
|
||
|
|
public static readonly double k_MaxTimelineDurationInSeconds = 9e6; //104 days of running time
|
||
|
|
public static readonly double kFrameRateRounding = 1e-2;
|
||
|
|
|
||
|
|
|
||
|
|
static void ValidateFrameRate(double frameRate)
|
||
|
|
{
|
||
|
|
if (frameRate <= kTimeEpsilon)
|
||
|
|
throw new ArgumentException("frame rate cannot be 0 or negative");
|
||
|
|
}
|
||
|
|
|
||
|
|
public static int ToFrames(double time, double frameRate)
|
||
|
|
{
|
||
|
|
ValidateFrameRate(frameRate);
|
||
|
|
time = Math.Min(Math.Max(time, -k_MaxTimelineDurationInSeconds), k_MaxTimelineDurationInSeconds);
|
||
|
|
// this matches OnFrameBoundary
|
||
|
|
double tolerance = GetEpsilon(time, frameRate);
|
||
|
|
if (time < 0)
|
||
|
|
{
|
||
|
|
return (int)Math.Ceiling(time * frameRate - tolerance);
|
||
|
|
}
|
||
|
|
return (int)Math.Floor(time * frameRate + tolerance);
|
||
|
|
}
|
||
|
|
|
||
|
|
public static double ToExactFrames(double time, double frameRate)
|
||
|
|
{
|
||
|
|
ValidateFrameRate(frameRate);
|
||
|
|
return time * frameRate;
|
||
|
|
}
|
||
|
|
|
||
|
|
public static double FromFrames(int frames, double frameRate)
|
||
|
|
{
|
||
|
|
ValidateFrameRate(frameRate);
|
||
|
|
return (frames / frameRate);
|
||
|
|
}
|
||
|
|
|
||
|
|
public static double FromFrames(double frames, double frameRate)
|
||
|
|
{
|
||
|
|
ValidateFrameRate(frameRate);
|
||
|
|
return frames / frameRate;
|
||
|
|
}
|
||
|
|
|
||
|
|
public static bool OnFrameBoundary(double time, double frameRate)
|
||
|
|
{
|
||
|
|
return OnFrameBoundary(time, frameRate, GetEpsilon(time, frameRate));
|
||
|
|
}
|
||
|
|
|
||
|
|
public static double GetEpsilon(double time, double frameRate)
|
||
|
|
{
|
||
|
|
return Math.Max(Math.Abs(time), 1) * frameRate * kTimeEpsilon;
|
||
|
|
}
|
||
|
|
|
||
|
|
public static bool OnFrameBoundary(double time, double frameRate, double epsilon)
|
||
|
|
{
|
||
|
|
ValidateFrameRate(frameRate);
|
||
|
|
|
||
|
|
double exact = ToExactFrames(time, frameRate);
|
||
|
|
double rounded = Math.Round(exact);
|
||
|
|
|
||
|
|
return Math.Abs(exact - rounded) < epsilon;
|
||
|
|
}
|
||
|
|
|
||
|
|
public static double RoundToFrame(double time, double frameRate)
|
||
|
|
{
|
||
|
|
ValidateFrameRate(frameRate);
|
||
|
|
|
||
|
|
var frameBefore = (int)Math.Floor(time * frameRate) / frameRate;
|
||
|
|
var frameAfter = (int)Math.Ceiling(time * frameRate) / frameRate;
|
||
|
|
|
||
|
|
return Math.Abs(time - frameBefore) < Math.Abs(time - frameAfter) ? frameBefore : frameAfter;
|
||
|
|
}
|
||
|
|
|
||
|
|
public static string TimeAsFrames(double timeValue, double frameRate, string format = "F2")
|
||
|
|
{
|
||
|
|
if (OnFrameBoundary(timeValue, frameRate)) // make integral values when on time borders
|
||
|
|
return ToFrames(timeValue, frameRate).ToString();
|
||
|
|
return ToExactFrames(timeValue, frameRate).ToString(format);
|
||
|
|
}
|
||
|
|
|
||
|
|
public static string TimeAsTimeCode(double timeValue, double frameRate, string format = "F2")
|
||
|
|
{
|
||
|
|
ValidateFrameRate(frameRate);
|
||
|
|
|
||
|
|
int intTime = (int)Math.Abs(timeValue);
|
||
|
|
|
||
|
|
int hours = intTime / 3600;
|
||
|
|
int minutes = (intTime % 3600) / 60;
|
||
|
|
int seconds = intTime % 60;
|
||
|
|
|
||
|
|
string result;
|
||
|
|
string sign = timeValue < 0 ? "-" : string.Empty;
|
||
|
|
if (hours > 0)
|
||
|
|
result = hours + ":" + minutes.ToString("D2") + ":" + seconds.ToString("D2");
|
||
|
|
else if (minutes > 0)
|
||
|
|
result = minutes + ":" + seconds.ToString("D2");
|
||
|
|
else
|
||
|
|
result = seconds.ToString();
|
||
|
|
|
||
|
|
int frameDigits = (int)Math.Floor(Math.Log10(frameRate) + 1);
|
||
|
|
|
||
|
|
// Add partial digits on the frame if needed.
|
||
|
|
// we are testing the original value (not the truncated), because the truncation can cause rounding errors leading
|
||
|
|
// to invalid strings for items on frame boundaries
|
||
|
|
string frames = (ToFrames(timeValue, frameRate) - ToFrames(intTime, frameRate)).ToString().PadLeft(frameDigits, '0');
|
||
|
|
if (!OnFrameBoundary(timeValue, frameRate))
|
||
|
|
{
|
||
|
|
string decimals = ToExactFrames(timeValue, frameRate).ToString(format);
|
||
|
|
int decPlace = decimals.IndexOf('.');
|
||
|
|
if (decPlace >= 0)
|
||
|
|
frames += " [" + decimals.Substring(decPlace) + "]";
|
||
|
|
}
|
||
|
|
|
||
|
|
return sign + result + ":" + frames;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Given a time code string, return the time in seconds
|
||
|
|
// 1.5 -> 1.5 seconds
|
||
|
|
// 1:1.5 -> 1 minute, 1.5 seconds
|
||
|
|
// 1:1[.5] -> 1 second, 1.5 frames
|
||
|
|
// 2:3:4 -> 2 minutes, 3 seconds, 4 frames
|
||
|
|
// 1[.6] -> 1.6 frames
|
||
|
|
public static double ParseTimeCode(string timeCode, double frameRate, double defaultValue)
|
||
|
|
{
|
||
|
|
timeCode = RemoveChar(timeCode, c => char.IsWhiteSpace(c));
|
||
|
|
string[] sections = timeCode.Split(':');
|
||
|
|
if (sections.Length == 0 || sections.Length > 4)
|
||
|
|
return defaultValue;
|
||
|
|
|
||
|
|
int hours = 0;
|
||
|
|
int minutes = 0;
|
||
|
|
double seconds = 0;
|
||
|
|
double frames = 0;
|
||
|
|
|
||
|
|
try
|
||
|
|
{
|
||
|
|
// depending on the format of the last numbers
|
||
|
|
// seconds format
|
||
|
|
string lastSection = sections[sections.Length - 1];
|
||
|
|
if (Regex.Match(lastSection, @"^\d+\.\d+$").Success)
|
||
|
|
{
|
||
|
|
seconds = double.Parse(lastSection);
|
||
|
|
if (sections.Length > 3) return defaultValue;
|
||
|
|
if (sections.Length > 1) minutes = int.Parse(sections[sections.Length - 2]);
|
||
|
|
if (sections.Length > 2) hours = int.Parse(sections[sections.Length - 3]);
|
||
|
|
}
|
||
|
|
// frame formats
|
||
|
|
else
|
||
|
|
{
|
||
|
|
if (Regex.Match(lastSection, @"^\d+\[\.\d+\]$").Success)
|
||
|
|
{
|
||
|
|
string stripped = RemoveChar(lastSection, c => c == '[' || c == ']');
|
||
|
|
frames = double.Parse(stripped);
|
||
|
|
}
|
||
|
|
else if (Regex.Match(lastSection, @"^\d*$").Success)
|
||
|
|
{
|
||
|
|
frames = int.Parse(lastSection);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
return defaultValue;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (sections.Length > 1) seconds = int.Parse(sections[sections.Length - 2]);
|
||
|
|
if (sections.Length > 2) minutes = int.Parse(sections[sections.Length - 3]);
|
||
|
|
if (sections.Length > 3) hours = int.Parse(sections[sections.Length - 4]);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
catch (FormatException)
|
||
|
|
{
|
||
|
|
return defaultValue;
|
||
|
|
}
|
||
|
|
|
||
|
|
return frames / frameRate + seconds + minutes * 60 + hours * 3600;
|
||
|
|
}
|
||
|
|
|
||
|
|
public static double ParseTimeSeconds(string timeCode, double frameRate, double defaultValue)
|
||
|
|
{
|
||
|
|
timeCode = RemoveChar(timeCode, c => char.IsWhiteSpace(c));
|
||
|
|
string[] sections = timeCode.Split(':');
|
||
|
|
if (sections.Length == 0 || sections.Length > 4)
|
||
|
|
return defaultValue;
|
||
|
|
|
||
|
|
int hours = 0;
|
||
|
|
int minutes = 0;
|
||
|
|
double seconds = 0;
|
||
|
|
|
||
|
|
try
|
||
|
|
{
|
||
|
|
// depending on the format of the last numbers
|
||
|
|
// seconds format
|
||
|
|
string lastSection = sections[sections.Length - 1];
|
||
|
|
{
|
||
|
|
if (!double.TryParse(lastSection, NumberStyles.Integer, CultureInfo.InvariantCulture, out seconds))
|
||
|
|
if (Regex.Match(lastSection, @"^\d+\.\d+$").Success)
|
||
|
|
seconds = double.Parse(lastSection);
|
||
|
|
else
|
||
|
|
return defaultValue;
|
||
|
|
|
||
|
|
if (!double.TryParse(lastSection, NumberStyles.Float, CultureInfo.InvariantCulture, out seconds))
|
||
|
|
return defaultValue;
|
||
|
|
|
||
|
|
if (sections.Length > 3) return defaultValue;
|
||
|
|
if (sections.Length > 1) minutes = int.Parse(sections[sections.Length - 2]);
|
||
|
|
if (sections.Length > 2) hours = int.Parse(sections[sections.Length - 3]);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
catch (FormatException)
|
||
|
|
{
|
||
|
|
return defaultValue;
|
||
|
|
}
|
||
|
|
|
||
|
|
return seconds + minutes * 60 + hours * 3600;
|
||
|
|
}
|
||
|
|
|
||
|
|
// fixes rounding errors from using single precision for length
|
||
|
|
public static double GetAnimationClipLength(AnimationClip clip)
|
||
|
|
{
|
||
|
|
if (clip == null || clip.empty)
|
||
|
|
return 0;
|
||
|
|
|
||
|
|
double length = clip.length;
|
||
|
|
if (clip.frameRate > 0)
|
||
|
|
{
|
||
|
|
double frames = Mathf.Round(clip.length * clip.frameRate);
|
||
|
|
length = frames / clip.frameRate;
|
||
|
|
}
|
||
|
|
return length;
|
||
|
|
}
|
||
|
|
|
||
|
|
static string RemoveChar(string str, Func<char, bool> charToRemoveFunc)
|
||
|
|
{
|
||
|
|
var len = str.Length;
|
||
|
|
var src = str.ToCharArray();
|
||
|
|
var dstIdx = 0;
|
||
|
|
for (var i = 0; i < len; i++)
|
||
|
|
{
|
||
|
|
if (!charToRemoveFunc(src[i]))
|
||
|
|
src[dstIdx++] = src[i];
|
||
|
|
}
|
||
|
|
return new string(src, 0, dstIdx);
|
||
|
|
}
|
||
|
|
|
||
|
|
public static FrameRate GetClosestFrameRate(double frameRate)
|
||
|
|
{
|
||
|
|
ValidateFrameRate(frameRate);
|
||
|
|
var actualFrameRate = FrameRate.DoubleToFrameRate(frameRate);
|
||
|
|
return Math.Abs(frameRate - actualFrameRate.rate) < kFrameRateRounding ? actualFrameRate : new FrameRate();
|
||
|
|
}
|
||
|
|
|
||
|
|
public static FrameRate ToFrameRate(StandardFrameRates enumValue)
|
||
|
|
{
|
||
|
|
switch (enumValue)
|
||
|
|
{
|
||
|
|
case StandardFrameRates.Fps23_97:
|
||
|
|
return FrameRate.k_23_976Fps;
|
||
|
|
case StandardFrameRates.Fps24:
|
||
|
|
return FrameRate.k_24Fps;
|
||
|
|
case StandardFrameRates.Fps25:
|
||
|
|
return FrameRate.k_25Fps;
|
||
|
|
case StandardFrameRates.Fps29_97:
|
||
|
|
return FrameRate.k_29_97Fps;
|
||
|
|
case StandardFrameRates.Fps30:
|
||
|
|
return FrameRate.k_30Fps;
|
||
|
|
case StandardFrameRates.Fps50:
|
||
|
|
return FrameRate.k_50Fps;
|
||
|
|
case StandardFrameRates.Fps59_94:
|
||
|
|
return FrameRate.k_59_94Fps;
|
||
|
|
case StandardFrameRates.Fps60:
|
||
|
|
return FrameRate.k_60Fps;
|
||
|
|
default:
|
||
|
|
return new FrameRate();
|
||
|
|
}
|
||
|
|
;
|
||
|
|
}
|
||
|
|
|
||
|
|
internal static bool ToStandardFrameRate(FrameRate rate, out StandardFrameRates standard)
|
||
|
|
{
|
||
|
|
if (rate == FrameRate.k_23_976Fps)
|
||
|
|
standard = StandardFrameRates.Fps23_97;
|
||
|
|
else if (rate == FrameRate.k_24Fps)
|
||
|
|
standard = StandardFrameRates.Fps24;
|
||
|
|
else if (rate == FrameRate.k_25Fps)
|
||
|
|
standard = StandardFrameRates.Fps25;
|
||
|
|
else if (rate == FrameRate.k_30Fps)
|
||
|
|
standard = StandardFrameRates.Fps30;
|
||
|
|
else if (rate == FrameRate.k_29_97Fps)
|
||
|
|
standard = StandardFrameRates.Fps29_97;
|
||
|
|
else if (rate == FrameRate.k_50Fps)
|
||
|
|
standard = StandardFrameRates.Fps50;
|
||
|
|
else if (rate == FrameRate.k_59_94Fps)
|
||
|
|
standard = StandardFrameRates.Fps59_94;
|
||
|
|
else if (rate == FrameRate.k_60Fps)
|
||
|
|
standard = StandardFrameRates.Fps60;
|
||
|
|
else
|
||
|
|
{
|
||
|
|
standard = (StandardFrameRates)Enum.GetValues(typeof(StandardFrameRates)).Length;
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|