public override string ToString()
{
StringBuilder xml = new StringBuilder();
xml.Append(base.ToString());
xml.Append(MovieFragmentHeaderBox.ToString());
xml.Append(TrackFragmentBox.ToString());
xml.Append("</box>");
return(xml.ToString());
}
/// <summary>
/// AddSampleStream
/// This is the inverse of GetSampleStream above.
/// Given a list of samples, assemble the TrackFragmentBox for this fragment.
/// </summary>
/// <param name="streamLocations"></param>
/// <param name="trackTimeScale"></param>
/// <param name="currMdatOffset"></param>
public void AddSampleStream(List <StreamDataBlockInfo> streamLocations, uint trackTimeScale, ref ulong currMdatOffset)
{
// the time scale for every ISMV video fragment is 10,000,000
this._timeScale = trackTimeScale;
_currentOffsetInBytes = 0UL;
TrackFragmentBox tfrag = this.MovieFragmentBox.TrackFragmentBox;
TrackFragmentHeaderBox tfhd = tfrag.TrackFragmentHeaderBox;
// now we know the file offset to the data bits, so this is where we set the base data offset
tfhd.BaseDataOffset = currMdatOffset;
uint defaultSampleDuration = tfhd.DefaultSampleDuration;
uint defaultSampleSize = 0; // tfhd.DefaultSampleSize; <-- don't use default sample size
uint defaultSampleFlags = tfhd.DefaultSampleFlags;
TrackFragmentRunBox fragRunBox = tfrag.TrackFragmentRunBox;
IndependentAndDisposableSamplesBox stdpBox = tfrag.IndependentAndDisposableSamplesBox;
uint trackID = tfhd.TrackId;
uint trunFlags = fragRunBox.Flags;
if (((trunFlags & (uint)TrackFragmentRunBoxFlags.SampleDurationPresent) == 0) != (defaultSampleDuration > 0))
{
throw new Exception("Fragment: Trun flag sample duration present inconsistent with TrackFragmentHeaderBox data");
}
if (((trunFlags & (uint)TrackFragmentRunBoxFlags.SampleSizePresent) == 0) != (defaultSampleSize > 0))
{
throw new Exception("Fragment: Trun flag sample size present inconsistent with TrackFragmentHeaderBox data");
}
if (((trunFlags & (uint)TrackFragmentRunBoxFlags.SampleFlagsPresent) == 0) != (defaultSampleFlags != 0))
{
throw new Exception("Fragment: Trun flag sample flags present inconsistent with TrackFragmentHeaderBox data");
}
foreach (StreamDataBlockInfo data in streamLocations)
{
if ((defaultSampleSize > 0) && (data.SliceSize != defaultSampleSize))
{
throw new Exception("Samples do not have the same size in input stream when they're supposed to");
}
fragRunBox.AddOneSample(data, trackTimeScale, defaultSampleSize, defaultSampleFlags, ref currMdatOffset);
stdpBox.AddOneSample(data);
}
// after we write all the data bits, we should know the size of the mdata box
if (currMdatOffset < tfhd.BaseDataOffset)
{
throw new Exception("Fragment: fragment mdat box size calculation error");
}
this.MediaDataBox.Size += (ulong)(currMdatOffset - tfhd.BaseDataOffset);
}
