/// <summary>
/// Constructs a <see cref="Track" /> 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 Track(File _file, EBMLreader element)
{
ulong i = 0;
while (i < element.DataSize)
{
EBMLreader child = new EBMLreader(_file, element.DataOffset + i);
MatroskaID matroska_id = child.ID;
switch (matroska_id)
{
case MatroskaID.TrackNumber:
track_number = child.ReadULong();
break;
case MatroskaID.TrackUID:
_UID = child.ReadULong();
break;
case MatroskaID.CodecID:
track_codec_id = child.ReadString();
break;
case MatroskaID.CodecName:
track_codec_name = child.ReadString();
break;
case MatroskaID.TrackName:
track_name = child.ReadString();
break;
case MatroskaID.TrackLanguage:
track_language = child.ReadString();
break;
case MatroskaID.TrackFlagEnabled:
track_enabled = child.ReadBool();
break;
case MatroskaID.TrackFlagDefault:
track_default = child.ReadBool();
break;
case MatroskaID.CodecPrivate:
codec_data = child.ReadBytes();
break;
default:
unknown_elems.Add(child);
break;
}
i += child.Size;
}
}
/// <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 (EBMLreader elem in base.UnknownElements)
{
matroska_id = (MatroskaID)elem.ID;
switch (matroska_id)
{
case MatroskaID.TrackAudio:
{
ulong i = 0;
while (i < elem.DataSize)
{
EBMLreader child = new EBMLreader(_file, elem.DataOffset + i);
matroska_id = (MatroskaID)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:
unknown_elems.Add(child);
break;
}
i += child.Size;
}
break;
}
default:
unknown_elems.Add(elem);
break;
}
}
}
/// <summary>
/// Constructs a root <see cref="EBMLreader" /> instance, by reading from
/// the provided file position.
/// </summary>
/// <param name="_file"><see cref="File" /> File instance to read from.</param>
/// <param name="position">Position in the file to start reading from.</param>
public EBMLreader(Matroska.File _file, ulong position)
{
// Keep a reference to the file
file = _file;
parent = null;
// Initialize attributes
offset = position;
data_offset = position;
ebml_id = 0;
ebml_size = 0;
// Actually read the EBML on the file
Read(true);
}
/// <summary>
/// Create a new abstract <see cref="EBMLreader" /> with arbitrary attributes,
/// without reading its information on the file.
/// </summary>
/// <param name="parent">The <see cref="EBMLreader" /> that contains the instance to be described.</param>
/// <param name="position">Position in the file.</param>
/// <param name="ebmlid">EBML ID of the element</param>
/// <param name="size">Total size of the EBML, in bytes</param>
public EBMLreader(EBMLreader parent, ulong position, MatroskaID ebmlid, ulong size = 0)
{
// Keep a reference to the file
if (parent != null)
{
file = parent.file;
}
this.parent = parent;
// Initialize attributes
offset = position;
data_offset = offset;
ebml_id = (uint)ebmlid;
ebml_size = size;
}
/// <summary>
/// Constructs a <see cref="SubtitleTrack" /> 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 SubtitleTrack(File _file, EBMLreader element)
: base(_file, element)
{
// Here we handle the unknown elements we know, and store the rest
foreach (EBMLreader elem in base.UnknownElements)
{
MatroskaID matroska_id = (MatroskaID)elem.ID;
switch (matroska_id)
{
default:
unknown_elems.Add(elem);
break;
}
}
}
/// <summary>
/// Constructs a child <see cref="EBMLreader" /> reading the data from the
/// EBML parent at the provided file position.
/// </summary>
/// <param name="parent">The <see cref="EBMLreader" /> that contains the instance to be created.</param>
/// <param name="position">Position in the file to start reading from.</param>
public EBMLreader(EBMLreader parent, ulong position)
{
if (parent == null)
{
throw new ArgumentNullException("file");
}
// Keep a reference to the file
file = parent.file;
this.parent = parent;
// Initialize attributes
offset = position;
data_offset = position;
ebml_id = 0;
ebml_size = 0;
// Actually read the EBML on the file
Read(true);
}
/// <summary>
/// Constructs a child <see cref="EBMLreader" /> reading the data from the
/// EBML parent at the provided file position.
/// </summary>
/// <param name="parent">The <see cref="EBMLreader" /> that contains the instance to be created.</param>
/// <param name="position">Position in the file to start reading from.</param>
public EBMLreader(EBMLreader parent, ulong position)
{
if (parent == null)
{
throw new ArgumentNullException(nameof(parent));
}
// Keep a reference to the file
file = parent.file;
Parent = parent;
// Initialize attributes
offset = position;
DataOffset = position;
ebml_id = 0;
DataSize = 0;
// Actually read the EBML on the file
Read(true);
}
/// <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 (EBMLreader elem in base.UnknownElements)
{
matroska_id = (MatroskaID)elem.ID;
switch (matroska_id)
{
case MatroskaID.TrackVideo:
{
ulong i = 0;
while (i < elem.DataSize)
{
EBMLreader child = new EBMLreader(_file, elem.DataOffset + i);
matroska_id = (MatroskaID)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:
unknown_elems.Add(child);
break;
}
i += child.Size;
}
break;
}
case MatroskaID.TrackDefaultDuration:
ulong tmp = elem.ReadULong();
framerate = 1000000000.0 / (double)tmp;
break;
default:
unknown_elems.Add(elem);
break;
}
}
}
