/// <summary>
/// Constructs and initializes a new instance of <see
/// cref="AppleTag" /> for a specified ISO user data box.
/// </summary>
/// <param name="box">
/// A <see cref="IsoUserDataBox" /> from which the tag is to
/// be read.
/// </param>
public AppleTag(IsoUserDataBox box)
{
if (box == null)
{
throw new ArgumentNullException("box");
}
meta_box = box.GetChild(BoxType.Meta) as IsoMetaBox;
if (meta_box == null)
{
meta_box = new IsoMetaBox("mdir", null);
box.AddChild(meta_box);
}
ilst_box = meta_box.GetChild(BoxType.Ilst)
as AppleItemListBox;
if (ilst_box == null)
{
ilst_box = new AppleItemListBox();
meta_box.AddChild(ilst_box);
}
}
/// <summary>
/// Reads the file with a specified read style.
/// </summary>
/// <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>
private void Read(ReadStyle propertiesStyle)
{
// TODO: Support Id3v2 boxes!!!
tag = new CombinedTag();
Mode = AccessMode.Read;
try {
FileParser parser = new FileParser(this);
if (propertiesStyle == ReadStyle.None)
{
parser.ParseTag();
}
else
{
parser.ParseTagAndProperties();
}
InvariantStartPosition = parser.MdatStartPosition;
InvariantEndPosition = parser.MdatEndPosition;
udta_box = parser.UserDataBox;
if (udta_box != null && udta_box.GetChild(BoxType.Meta)
!= null && udta_box.GetChild(BoxType.Meta
).GetChild(BoxType.Ilst) != null)
{
TagTypesOnDisk |= TagTypes.Apple;
}
if (udta_box == null)
{
udta_box = new IsoUserDataBox();
}
apple_tag = new AppleTag(udta_box);
tag.SetTags(apple_tag);
// If we're not reading properties, we're done.
if (propertiesStyle == ReadStyle.None)
{
Mode = AccessMode.Closed;
return;
}
// Get the movie header box.
IsoMovieHeaderBox mvhd_box = parser.MovieHeaderBox;
if (mvhd_box == null)
{
Mode = AccessMode.Closed;
throw new CorruptFileException(
"mvhd box not found.");
}
IsoAudioSampleEntry audio_sample_entry =
parser.AudioSampleEntry;
IsoVisualSampleEntry visual_sample_entry =
parser.VisualSampleEntry;
// Read the properties.
properties = new Properties(mvhd_box.Duration,
audio_sample_entry, visual_sample_entry);
} finally {
Mode = AccessMode.Closed;
}
}
/// <summary>
/// Reads the file with a specified read style.
/// </summary>
/// <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>
private void Read (ReadStyle propertiesStyle)
{
// TODO: Support Id3v2 boxes!!!
tag = new CombinedTag ();
Mode = AccessMode.Read;
try {
FileParser parser = new FileParser (this);
if (propertiesStyle == ReadStyle.None)
parser.ParseTag ();
else
parser.ParseTagAndProperties ();
InvariantStartPosition = parser.MdatStartPosition;
InvariantEndPosition = parser.MdatEndPosition;
udta_box = parser.UserDataBox;
if (udta_box != null && udta_box.GetChild (BoxType.Meta)
!= null && udta_box.GetChild (BoxType.Meta
).GetChild (BoxType.Ilst) != null)
TagTypesOnDisk |= TagTypes.Apple;
if (udta_box == null)
udta_box = new IsoUserDataBox ();
apple_tag = new AppleTag (udta_box);
tag.SetTags (apple_tag);
// If we're not reading properties, we're done.
if (propertiesStyle == ReadStyle.None) {
Mode = AccessMode.Closed;
return;
}
// Get the movie header box.
IsoMovieHeaderBox mvhd_box = parser.MovieHeaderBox;
if(mvhd_box == null) {
Mode = AccessMode.Closed;
throw new CorruptFileException (
"mvhd box not found.");
}
IsoAudioSampleEntry audio_sample_entry =
parser.AudioSampleEntry;
IsoVisualSampleEntry visual_sample_entry =
parser.VisualSampleEntry;
// Read the properties.
properties = new Properties (mvhd_box.Duration,
audio_sample_entry, visual_sample_entry);
} finally {
Mode = AccessMode.Closed;
}
}
