/// <summary>
/// Construct a <see cref="AudioTrack" /> reading information from
/// provided file data.
/// Parsing will be done reading from _file at position references by
/// parent element's data section.
/// </summary>
/// <param name="_file"><see cref="File" /> instance to read from.</param>
/// <param name="element">Parent <see cref="EBMLreader" />.</param>
public AudioTrack(File _file, EBMLreader element)
: base(_file, element)
{
MatroskaID matroska_id;
// Here we handle the unknown elements we know, and store the rest
foreach (var elem in base.UnknownElements)
{
matroska_id = elem.ID;
switch (matroska_id)
{
case MatroskaID.TrackAudio:
{
ulong i = 0;
while (i < elem.DataSize)
{
var child = new EBMLreader(_file, elem.DataOffset + i);
matroska_id = child.ID;
switch (matroska_id)
{
case MatroskaID.AudioChannels:
channels = child.ReadULong();
break;
case MatroskaID.AudioBitDepth:
depth = child.ReadULong();
break;
case MatroskaID.AudioSamplingFreq:
rate = child.ReadDouble();
break;
default:
UnknownElements.Add(child);
break;
}
i += child.Size;
}
break;
}
default:
UnknownElements.Add(elem);
break;
}
}
}
private void ReadCreateSegmentInfo(EBMLreader element, EBMLelement ebml_sinfo)
{
ulong i = 0;
while (i < element.DataSize)
{
var child = new EBMLreader(element, element.DataOffset + i);
var matroska_id = child.ID;
switch (matroska_id)
{
case MatroskaID.Duration:
duration_unscaled = child.ReadDouble();
if (time_scale > 0)
{
duration = TimeSpan.FromMilliseconds(duration_unscaled * time_scale / 1000000);
}
break;
case MatroskaID.TimeCodeScale:
time_scale = child.ReadULong();
if (duration_unscaled > 0)
{
duration = TimeSpan.FromMilliseconds(duration_unscaled * time_scale / 1000000);
}
break;
case MatroskaID.Title:
break;
}
i += child.Size;
}
}
/// <summary>
/// Constructs a <see cref="VideoTrack" /> parsing from provided
/// file data.
/// Parsing will be done reading from _file at position references by
/// parent element's data section.
/// </summary>
/// <param name="_file"><see cref="File" /> instance to read from.</param>
/// <param name="element">Parent <see cref="EBMLreader" />.</param>
public VideoTrack(File _file, EBMLreader element)
: base(_file, element)
{
MatroskaID matroska_id;
// Here we handle the unknown elements we know, and store the rest
foreach (var elem in base.UnknownElements)
{
matroska_id = elem.ID;
switch (matroska_id)
{
case MatroskaID.TrackVideo:
{
ulong i = 0;
while (i < elem.DataSize)
{
var child = new EBMLreader(_file, elem.DataOffset + i);
matroska_id = child.ID;
switch (matroska_id)
{
case MatroskaID.VideoDisplayWidth:
disp_width = child.ReadULong();
break;
case MatroskaID.VideoDisplayHeight:
disp_height = child.ReadULong();
break;
case MatroskaID.VideoPixelWidth:
width = child.ReadULong();
break;
case MatroskaID.VideoPixelHeight:
height = child.ReadULong();
break;
case MatroskaID.VideoFrameRate:
framerate = child.ReadDouble();
break;
case MatroskaID.VideoFlagInterlaced:
interlaced = child.ReadBool();
break;
case MatroskaID.VideoAspectRatioType:
ratio_type = (VideoAspectRatioType)child.ReadULong();
break;
case MatroskaID.VideoColourSpace:
fourcc = child.ReadBytes();
break;
default:
UnknownElements.Add(child);
break;
}
i += child.Size;
}
break;
}
case MatroskaID.TrackDefaultDuration:
var tmp = elem.ReadULong();
framerate = 1000000000.0 / tmp;
break;
default:
UnknownElements.Add(elem);
break;
}
}
}
