ReadMetadata([NotNull] Stream stream)
{
var directories = new List <Directory>();
Action <AtomCallbackArgs> trakHandler = a =>
{
switch (a.TypeString)
{
case "tkhd":
{
var directory = new QuickTimeTrackHeaderDirectory();
directory.Set(QuickTimeTrackHeaderDirectory.TagVersion, a.Reader.GetByte());
directory.Set(QuickTimeTrackHeaderDirectory.TagFlags, a.Reader.GetBytes(3));
directory.Set(QuickTimeTrackHeaderDirectory.TagCreated, _epoch.AddTicks(TimeSpan.TicksPerSecond * a.Reader.GetUInt32()));
directory.Set(QuickTimeTrackHeaderDirectory.TagModified, _epoch.AddTicks(TimeSpan.TicksPerSecond * a.Reader.GetUInt32()));
directory.Set(QuickTimeTrackHeaderDirectory.TagTrackId, a.Reader.GetUInt32());
a.Reader.Skip(4L);
directory.Set(QuickTimeTrackHeaderDirectory.TagDuration, a.Reader.GetUInt32());
a.Reader.Skip(8L);
directory.Set(QuickTimeTrackHeaderDirectory.TagLayer, a.Reader.GetUInt16());
directory.Set(QuickTimeTrackHeaderDirectory.TagAlternateGroup, a.Reader.GetUInt16());
directory.Set(QuickTimeTrackHeaderDirectory.TagVolume, a.Reader.Get16BitFixedPoint());
a.Reader.Skip(2L);
a.Reader.GetBytes(36);
directory.Set(QuickTimeTrackHeaderDirectory.TagWidth, a.Reader.Get32BitFixedPoint());
directory.Set(QuickTimeTrackHeaderDirectory.TagHeight, a.Reader.Get32BitFixedPoint());
directories.Add(directory);
break;
}
}
};
var moovHandler = (Action <AtomCallbackArgs>)(a =>
{
switch (a.TypeString)
{
case "mvhd":
{
var directory = new QuickTimeMovieHeaderDirectory();
directory.Set(QuickTimeMovieHeaderDirectory.TagVersion, a.Reader.GetByte());
directory.Set(QuickTimeMovieHeaderDirectory.TagFlags, a.Reader.GetBytes(3));
directory.Set(QuickTimeMovieHeaderDirectory.TagCreated, _epoch.AddTicks(TimeSpan.TicksPerSecond * a.Reader.GetUInt32()));
directory.Set(QuickTimeMovieHeaderDirectory.TagModified, _epoch.AddTicks(TimeSpan.TicksPerSecond * a.Reader.GetUInt32()));
var timeScale = a.Reader.GetUInt32();
directory.Set(QuickTimeMovieHeaderDirectory.TagTimeScale, timeScale);
directory.Set(QuickTimeMovieHeaderDirectory.TagDuration, TimeSpan.FromSeconds(a.Reader.GetUInt32() / (double)timeScale));
directory.Set(QuickTimeMovieHeaderDirectory.TagPreferredRate, a.Reader.Get32BitFixedPoint());
directory.Set(QuickTimeMovieHeaderDirectory.TagPreferredVolume, a.Reader.Get16BitFixedPoint());
a.Reader.Skip(10);
directory.Set(QuickTimeMovieHeaderDirectory.TagMatrix, a.Reader.GetBytes(36));
directory.Set(QuickTimeMovieHeaderDirectory.TagPreviewTime, a.Reader.GetUInt32());
directory.Set(QuickTimeMovieHeaderDirectory.TagPreviewDuration, a.Reader.GetUInt32());
directory.Set(QuickTimeMovieHeaderDirectory.TagPosterTime, a.Reader.GetUInt32());
directory.Set(QuickTimeMovieHeaderDirectory.TagSelectionTime, a.Reader.GetUInt32());
directory.Set(QuickTimeMovieHeaderDirectory.TagSelectionDuration, a.Reader.GetUInt32());
directory.Set(QuickTimeMovieHeaderDirectory.TagCurrentTime, a.Reader.GetUInt32());
directory.Set(QuickTimeMovieHeaderDirectory.TagNextTrackId, a.Reader.GetUInt32());
directories.Add(directory);
break;
}
case "trak":
{
QuickTimeReader.ProcessAtoms(stream, trakHandler, a.BytesLeft);
break;
}
// case "clip":
// {
// QuickTimeReader.ProcessAtoms(stream, clipHandler, a.BytesLeft);
// break;
// }
// case "prfl":
// {
// a.Reader.Skip(4L);
// var partId = a.Reader.GetUInt32();
// var featureCode = a.Reader.GetUInt32();
// var featureValue = string.Join(" ", a.Reader.GetBytes(4).Select(v => v.ToString("X2")).ToArray());
// Debug.WriteLine($"PartId={partId} FeatureCode={featureCode} FeatureValue={featureValue}");
// break;
// }
}
});
Action <AtomCallbackArgs> handler = a =>
{
switch (a.TypeString)
{
case "moov":
{
QuickTimeReader.ProcessAtoms(stream, moovHandler, a.BytesLeft);
break;
}
case "ftyp":
{
var directory = new QuickTimeFileTypeDirectory();
directory.Set(QuickTimeFileTypeDirectory.TagMajorBrand, a.Reader.Get4ccString());
directory.Set(QuickTimeFileTypeDirectory.TagMinorVersion, a.Reader.GetUInt32());
var compatibleBrands = new List <string>();
while (a.BytesLeft >= 4)
{
compatibleBrands.Add(a.Reader.Get4ccString());
}
directory.Set(QuickTimeFileTypeDirectory.TagCompatibleBrands, compatibleBrands);
directories.Add(directory);
break;
}
}
};
QuickTimeReader.ProcessAtoms(stream, handler);
return(directories);
}
void MoovHandler(AtomCallbackArgs a)
{
switch (a.TypeString)
{
case "mvhd":
{
var directory = new QuickTimeMovieHeaderDirectory();
directory.Set(QuickTimeMovieHeaderDirectory.TagVersion, a.Reader.GetByte());
directory.Set(QuickTimeMovieHeaderDirectory.TagFlags, a.Reader.GetBytes(3));
directory.Set(QuickTimeMovieHeaderDirectory.TagCreated, _epoch.AddTicks(TimeSpan.TicksPerSecond * a.Reader.GetUInt32()));
directory.Set(QuickTimeMovieHeaderDirectory.TagModified, _epoch.AddTicks(TimeSpan.TicksPerSecond * a.Reader.GetUInt32()));
var timeScale = a.Reader.GetUInt32();
directory.Set(QuickTimeMovieHeaderDirectory.TagTimeScale, timeScale);
directory.Set(QuickTimeMovieHeaderDirectory.TagDuration, TimeSpan.FromSeconds(a.Reader.GetUInt32() / (double)timeScale));
directory.Set(QuickTimeMovieHeaderDirectory.TagPreferredRate, a.Reader.Get32BitFixedPoint());
directory.Set(QuickTimeMovieHeaderDirectory.TagPreferredVolume, a.Reader.Get16BitFixedPoint());
a.Reader.Skip(10);
directory.Set(QuickTimeMovieHeaderDirectory.TagMatrix, a.Reader.GetBytes(36));
directory.Set(QuickTimeMovieHeaderDirectory.TagPreviewTime, a.Reader.GetUInt32());
directory.Set(QuickTimeMovieHeaderDirectory.TagPreviewDuration, a.Reader.GetUInt32());
directory.Set(QuickTimeMovieHeaderDirectory.TagPosterTime, a.Reader.GetUInt32());
directory.Set(QuickTimeMovieHeaderDirectory.TagSelectionTime, a.Reader.GetUInt32());
directory.Set(QuickTimeMovieHeaderDirectory.TagSelectionDuration, a.Reader.GetUInt32());
directory.Set(QuickTimeMovieHeaderDirectory.TagCurrentTime, a.Reader.GetUInt32());
directory.Set(QuickTimeMovieHeaderDirectory.TagNextTrackId, a.Reader.GetUInt32());
directories.Add(directory);
break;
}
case "uuid":
{
var CR3 = new byte[] { 0x85, 0xc0, 0xb6, 0x87, 0x82, 0x0f, 0x11, 0xe0, 0x81, 0x11, 0xf4, 0xce, 0x46, 0x2b, 0x6a, 0x48 };
var uuid = a.Reader.GetBytes(CR3.Length);
if (CR3.RegionEquals(0, CR3.Length, uuid))
{
QuickTimeReader.ProcessAtoms(stream, UuidHandler, a.BytesLeft);
}
break;
}
case "trak":
{
QuickTimeReader.ProcessAtoms(stream, TrakHandler, a.BytesLeft);
break;
}
// case "clip":
// {
// QuickTimeReader.ProcessAtoms(stream, clipHandler, a.BytesLeft);
// break;
// }
// case "prfl":
// {
// a.Reader.Skip(4L);
// var partId = a.Reader.GetUInt32();
// var featureCode = a.Reader.GetUInt32();
// var featureValue = string.Join(" ", a.Reader.GetBytes(4).Select(v => v.ToString("X2")).ToArray());
// Debug.WriteLine($"PartId={partId} FeatureCode={featureCode} FeatureValue={featureValue}");
// break;
// }
}
}
public static DirectoryList ReadMetadata([NotNull] Stream stream)
{
var directories = new List <Directory>();
void TrakHandler(AtomCallbackArgs a)
{
switch (a.TypeString)
{
case "tkhd":
{
var directory = new QuickTimeTrackHeaderDirectory();
directory.Set(QuickTimeTrackHeaderDirectory.TagVersion, a.Reader.GetByte());
directory.Set(QuickTimeTrackHeaderDirectory.TagFlags, a.Reader.GetBytes(3));
directory.Set(QuickTimeTrackHeaderDirectory.TagCreated, _epoch.AddTicks(TimeSpan.TicksPerSecond * a.Reader.GetUInt32()));
directory.Set(QuickTimeTrackHeaderDirectory.TagModified, _epoch.AddTicks(TimeSpan.TicksPerSecond * a.Reader.GetUInt32()));
directory.Set(QuickTimeTrackHeaderDirectory.TagTrackId, a.Reader.GetUInt32());
a.Reader.Skip(4L);
directory.Set(QuickTimeTrackHeaderDirectory.TagDuration, a.Reader.GetUInt32());
a.Reader.Skip(8L);
directory.Set(QuickTimeTrackHeaderDirectory.TagLayer, a.Reader.GetUInt16());
directory.Set(QuickTimeTrackHeaderDirectory.TagAlternateGroup, a.Reader.GetUInt16());
directory.Set(QuickTimeTrackHeaderDirectory.TagVolume, a.Reader.Get16BitFixedPoint());
a.Reader.Skip(2L);
directory.Set(QuickTimeTrackHeaderDirectory.TagMatrix, a.Reader.GetMatrix());
directory.Set(QuickTimeTrackHeaderDirectory.TagWidth, a.Reader.Get32BitFixedPoint());
directory.Set(QuickTimeTrackHeaderDirectory.TagHeight, a.Reader.Get32BitFixedPoint());
SetRotation(directory);
directories.Add(directory);
break;
}
}
}
void SetRotation(QuickTimeTrackHeaderDirectory directory)
{
var width = directory.GetInt32(QuickTimeTrackHeaderDirectory.TagWidth);
var height = directory.GetInt32(QuickTimeTrackHeaderDirectory.TagHeight);
if (width == 0 || height == 0 || directory.GetObject(QuickTimeTrackHeaderDirectory.TagRotation) != null)
{
return;
}
if (directory.GetObject(QuickTimeTrackHeaderDirectory.TagMatrix) is float[] matrix && matrix.Length > 5)
{
var x = matrix[1] + matrix[4];
var y = matrix[0] + matrix[3];
var theta = Math.Atan2(x, y);
var degree = ((180 / Math.PI) * theta) - 45;
if (degree < 0)
{
degree += 360;
}
directory.Set(QuickTimeTrackHeaderDirectory.TagRotation, degree);
}
}
void MoovHandler(AtomCallbackArgs a)
{
switch (a.TypeString)
{
case "mvhd":
{
var directory = new QuickTimeMovieHeaderDirectory();
directory.Set(QuickTimeMovieHeaderDirectory.TagVersion, a.Reader.GetByte());
directory.Set(QuickTimeMovieHeaderDirectory.TagFlags, a.Reader.GetBytes(3));
directory.Set(QuickTimeMovieHeaderDirectory.TagCreated, _epoch.AddTicks(TimeSpan.TicksPerSecond * a.Reader.GetUInt32()));
directory.Set(QuickTimeMovieHeaderDirectory.TagModified, _epoch.AddTicks(TimeSpan.TicksPerSecond * a.Reader.GetUInt32()));
var timeScale = a.Reader.GetUInt32();
directory.Set(QuickTimeMovieHeaderDirectory.TagTimeScale, timeScale);
directory.Set(QuickTimeMovieHeaderDirectory.TagDuration, TimeSpan.FromSeconds(a.Reader.GetUInt32() / (double)timeScale));
directory.Set(QuickTimeMovieHeaderDirectory.TagPreferredRate, a.Reader.Get32BitFixedPoint());
directory.Set(QuickTimeMovieHeaderDirectory.TagPreferredVolume, a.Reader.Get16BitFixedPoint());
a.Reader.Skip(10);
directory.Set(QuickTimeMovieHeaderDirectory.TagMatrix, a.Reader.GetBytes(36));
directory.Set(QuickTimeMovieHeaderDirectory.TagPreviewTime, a.Reader.GetUInt32());
directory.Set(QuickTimeMovieHeaderDirectory.TagPreviewDuration, a.Reader.GetUInt32());
directory.Set(QuickTimeMovieHeaderDirectory.TagPosterTime, a.Reader.GetUInt32());
directory.Set(QuickTimeMovieHeaderDirectory.TagSelectionTime, a.Reader.GetUInt32());
directory.Set(QuickTimeMovieHeaderDirectory.TagSelectionDuration, a.Reader.GetUInt32());
directory.Set(QuickTimeMovieHeaderDirectory.TagCurrentTime, a.Reader.GetUInt32());
directory.Set(QuickTimeMovieHeaderDirectory.TagNextTrackId, a.Reader.GetUInt32());
directories.Add(directory);
break;
}
case "trak":
{
QuickTimeReader.ProcessAtoms(stream, TrakHandler, a.BytesLeft);
break;
}
// case "clip":
// {
// QuickTimeReader.ProcessAtoms(stream, clipHandler, a.BytesLeft);
// break;
// }
// case "prfl":
// {
// a.Reader.Skip(4L);
// var partId = a.Reader.GetUInt32();
// var featureCode = a.Reader.GetUInt32();
// var featureValue = string.Join(" ", a.Reader.GetBytes(4).Select(v => v.ToString("X2")).ToArray());
// Debug.WriteLine($"PartId={partId} FeatureCode={featureCode} FeatureValue={featureValue}");
// break;
// }
}
}
void Handler(AtomCallbackArgs a)
{
switch (a.TypeString)
{
case "moov":
{
QuickTimeReader.ProcessAtoms(stream, MoovHandler, a.BytesLeft);
break;
}
case "ftyp":
{
var directory = new QuickTimeFileTypeDirectory();
directory.Set(QuickTimeFileTypeDirectory.TagMajorBrand, a.Reader.Get4ccString());
directory.Set(QuickTimeFileTypeDirectory.TagMinorVersion, a.Reader.GetUInt32());
var compatibleBrands = new List <string>();
while (a.BytesLeft >= 4)
{
compatibleBrands.Add(a.Reader.Get4ccString());
}
directory.Set(QuickTimeFileTypeDirectory.TagCompatibleBrands, compatibleBrands);
directories.Add(directory);
break;
}
}
}
QuickTimeReader.ProcessAtoms(stream, Handler);
return(directories);
}