/// <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="EBMLElement" />.</param>
public VideoTrack (File _file, EBMLElement element)
: base (_file, element)
{
MatroskaID matroska_id;
// Here we handle the unknown elements we know, and store the rest
foreach (EBMLElement elem in base.UnknownElements) {
matroska_id = (MatroskaID) elem.ID;
if (matroska_id == MatroskaID.MatroskaTrackVideo) {
ulong i = 0;
while (i < elem.DataSize) {
EBMLElement child = new EBMLElement (_file, elem.DataOffset + i);
matroska_id = (MatroskaID) child.ID;
switch (matroska_id) {
case MatroskaID.MatroskaVideoDisplayWidth:
disp_width = child.ReadUInt ();
break;
case MatroskaID.MatroskaVideoDisplayHeight:
disp_height = child.ReadUInt ();
break;
case MatroskaID.MatroskaVideoPixelWidth:
width = child.ReadUInt ();
break;
case MatroskaID.MatroskaVideoPixelHeight:
height = child.ReadUInt ();
break;
case MatroskaID.MatroskaVideoFrameRate:
framerate = child.ReadDouble ();
break;
case MatroskaID.MatroskaVideoFlagInterlaced:
interlaced = child.ReadBool ();
break;
case MatroskaID.MatroskaVideoAspectRatioType:
ratio_type = (VideoAspectRatioType) child.ReadUInt ();
break;
case MatroskaID.MatroskaVideoColourSpace:
fourcc = child.ReadBytes ();
break;
default:
unknown_elems.Add (child);
break;
}
i += child.Size;
}
}
else if (matroska_id == MatroskaID.MatroskaTrackDefaultDuration) {
uint tmp = elem.ReadUInt ();
framerate = 1000000000.0 / (double) tmp;
}
else {
unknown_elems.Add (elem);
}
}
}
/// <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="EBMLElement" />.</param>
public SubtitleTrack (File _file, EBMLElement element)
: base (_file, element)
{
// Here we handle the unknown elements we know, and store the rest
foreach (EBMLElement elem in base.UnknownElements) {
MatroskaID matroska_id = (MatroskaID) elem.ID;
switch (matroska_id) {
default:
unknown_elems.Add (elem);
break;
}
}
}
/// <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="EBMLElement" />.</param>
public Track (File _file, EBMLElement element)
{
ulong i = 0;
while (i < element.DataSize) {
EBMLElement child = new EBMLElement (_file, element.DataOffset + i);
MatroskaID matroska_id = (MatroskaID) child.ID;
switch (matroska_id) {
case MatroskaID.MatroskaTrackNumber:
track_number = child.ReadUInt ();
break;
case MatroskaID.MatroskaTrackUID:
track_uid = child.ReadUInt ();
break;
case MatroskaID.MatroskaCodecID:
track_codec_id = child.ReadString ();
break;
case MatroskaID.MatroskaCodecName:
track_codec_name = child.ReadString ();
break;
case MatroskaID.MatroskaTrackName:
track_name = child.ReadString ();
break;
case MatroskaID.MatroskaTrackLanguage:
track_language = child.ReadString ();
break;
case MatroskaID.MatroskaTrackFlagEnabled:
track_enabled = child.ReadBool ();
break;
case MatroskaID.MatroskaTrackFlagDefault:
track_default = child.ReadBool ();
break;
case MatroskaID.MatroskaCodecPrivate:
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="EBMLElement" />.</param>
public AudioTrack (File _file, EBMLElement element)
: base (_file, element)
{
MatroskaID matroska_id;
// Here we handle the unknown elements we know, and store the rest
foreach (EBMLElement elem in base.UnknownElements) {
matroska_id = (MatroskaID) elem.ID;
if (matroska_id == MatroskaID.MatroskaTrackAudio) {
ulong i = 0;
while (i < elem.DataSize) {
EBMLElement child = new EBMLElement (_file, elem.DataOffset + i);
matroska_id = (MatroskaID) child.ID;
switch (matroska_id) {
case MatroskaID.MatroskaAudioChannels:
channels = child.ReadUInt ();
break;
case MatroskaID.MatroskaAudioBitDepth:
depth = child.ReadUInt ();
break;
case MatroskaID.MatroskaAudioSamplingFreq:
rate = child.ReadDouble ();
break;
default:
unknown_elems.Add (child);
break;
}
i += child.Size;
}
}
else {
unknown_elems.Add (elem);
}
}
}
/// <summary>
/// Constructs and initializes a new instance of <see
/// cref="File" /> for a specified file abstraction with an
/// average read style.
/// </summary>
/// <param name="abstraction">
/// A <see cref="IFileAbstraction" /> object to use when
/// reading from and writing to the file.
/// </param>
/// <exception cref="ArgumentNullException">
/// <paramref name="abstraction" /> is <see langword="null"
/// />.
/// </exception>
public File (File.IFileAbstraction abstraction)
: this (abstraction, ReadStyle.Average)
{
}
/// <summary>
/// Constructs and initializes a new instance of <see
/// cref="File" /> for a specified file abstraction and
/// specified read style.
/// </summary>
/// <param name="abstraction">
/// A <see cref="IFileAbstraction" /> object to use when
/// reading from and writing to the file.
/// </param>
/// <param name="propertiesStyle">
/// A <see cref="ReadStyle" /> value specifying at what level
/// of accuracy to read the media properties, or <see
/// cref="ReadStyle.None" /> to ignore the properties.
/// </param>
/// <exception cref="ArgumentNullException">
/// <paramref name="abstraction" /> is <see langword="null"
/// />.
/// </exception>
public File (File.IFileAbstraction abstraction,
ReadStyle propertiesStyle)
: base (abstraction)
{
Mode = AccessMode.Read;
try {
Read (propertiesStyle);
TagTypesOnDisk = TagTypes;
}
finally {
Mode = AccessMode.Closed;
}
List<ICodec> codecs = new List<ICodec> ();
foreach (Track track in tracks) {
codecs.Add (track);
}
properties = new Properties (duration, codecs);
}
