//----------------------------------------------------------------------------------------------------------------------
internal void ResetPlayableFrames()
{
DestroyPlayableFrames();
//Recalculate the number of frames and create the marker's ground truth data
int numFrames = TimelineUtility.CalculateNumFrames(m_clipOwner);
m_playableFrames = new List <SISPlayableFrame>(numFrames);
UpdatePlayableFramesSize(numFrames);
}
//----------------------------------------------------------------------------------------------------------------------
//Resize PlayableFrames and used the previous values
internal void RefreshPlayableFrames()
{
//Clip doesn't have parent. Might be because the clip is being moved
if (null == m_clipOwner.parentTrack)
{
return;
}
int numIdealNumPlayableFrames = TimelineUtility.CalculateNumFrames(m_clipOwner);
//Change the size of m_playableFrames and reinitialize if necessary
int prevNumPlayableFrames = m_playableFrames.Count;
if (numIdealNumPlayableFrames != prevNumPlayableFrames)
{
//Change the size of m_playableFrames and reinitialize if necessary
List <bool> prevUsedFrames = new List <bool>(prevNumPlayableFrames);
foreach (SISPlayableFrame frame in m_playableFrames)
{
prevUsedFrames.Add(null == frame || frame.IsUsed()); //if frame ==null, just regard as used.
}
UpdatePlayableFramesSize(numIdealNumPlayableFrames);
//Reinitialize
if (prevNumPlayableFrames > 0)
{
for (int i = 0; i < numIdealNumPlayableFrames; ++i)
{
int prevIndex = (int)(((float)(i) / numIdealNumPlayableFrames) * prevNumPlayableFrames);
m_playableFrames[i].SetUsed(prevUsedFrames[prevIndex]);
}
}
}
//Refresh all markers
double timePerFrame = TimelineUtility.CalculateTimePerFrame(m_clipOwner);
int numPlayableFrames = m_playableFrames.Count;
for (int i = 0; i < numPlayableFrames; ++i)
{
m_playableFrames[i].SetIndexAndLocalTime(i, i * timePerFrame);
m_playableFrames[i].Refresh(m_frameMarkersVisibility);
}
}
//----------------------------------------------------------------------------------------------------------------------
private void UpdatePlayableFramesSize(int reqPlayableFramesSize)
{
Assert.IsNotNull(m_clipOwner);
double timePerFrame = TimelineUtility.CalculateTimePerFrame(m_clipOwner);
//Resize m_playableFrames
if (m_playableFrames.Count < reqPlayableFramesSize)
{
int numNewPlayableFrames = (reqPlayableFramesSize - m_playableFrames.Count);
List <SISPlayableFrame> newPlayableFrames = new List <SISPlayableFrame>(numNewPlayableFrames);
for (int i = m_playableFrames.Count; i < reqPlayableFramesSize; ++i)
{
newPlayableFrames.Add(CreatePlayableFrame(this, i, timePerFrame));
}
m_playableFrames.AddRange(newPlayableFrames);
}
if (m_playableFrames.Count > reqPlayableFramesSize)
{
int numLastPlayableFrames = m_playableFrames.Count;
for (int i = reqPlayableFramesSize; i < numLastPlayableFrames; ++i)
{
SISPlayableFrame curFrame = m_playableFrames[i];
curFrame?.Destroy();
}
m_playableFrames.RemoveRange(reqPlayableFramesSize, numLastPlayableFrames - reqPlayableFramesSize);
}
Assert.IsTrue(m_playableFrames.Count == reqPlayableFramesSize);
for (int i = 0; i < reqPlayableFramesSize; ++i)
{
SISPlayableFrame curPlayableFrame = m_playableFrames[i];
Assert.IsNotNull(curPlayableFrame);
m_playableFrames[i].SetIndexAndLocalTime(i, timePerFrame * i);
}
}