/// <summary>
/// Constructs and initializes a new instance of <see
/// cref="AviHeaderList" /> by reading the contents of a raw
/// RIFF list from a specified position in a <see
/// cref="TagLib.File"/>.
/// </summary>
/// <param name="file">
/// A <see cref="TagLib.File" /> object containing the file
/// from which the contents of the new instance is to be
/// read.
/// </param>
/// <param name="position">
/// A <see cref="long" /> value specify at what position to
/// read the list.
/// </param>
/// <param name="length">
/// A <see cref="int" /> value specifying the number of bytes
/// to read.
/// </param>
/// <exception cref="ArgumentNullException">
/// <paramref name="file" /> is <see langword="null" />.
/// </exception>
/// <exception cref="ArgumentOutOfRangeException">
/// <paramref name="position" /> is less than zero or greater
/// than the size of the file.
/// </exception>
/// <exception cref="CorruptFileException">
/// The list does not contain an AVI header or the AVI header
/// is the wrong length.
/// </exception>
public AviHeaderList(TagLib.File file, long position,
int length)
{
if (file == null)
{
throw new ArgumentNullException("file");
}
if (length < 0)
{
throw new ArgumentOutOfRangeException(
"length");
}
if (position < 0 || position > file.Length - length)
{
throw new ArgumentOutOfRangeException(
"position");
}
List list = new List(file, position, length);
if (!list.ContainsKey("avih"))
{
throw new CorruptFileException(
"Avi header not found.");
}
ByteVector header_data = list ["avih"][0];
if (header_data.Count != 0x38)
{
throw new CorruptFileException(
"Invalid header length.");
}
header = new AviHeader(header_data, 0);
foreach (ByteVector list_data in list["LIST"])
{
if (list_data.StartsWith("strl"))
{
codecs.Add(AviStream
.ParseStreamList(list_data)
.Codec);
}
}
}
