/// <summary>Read in an MTrk chunk from the stream.</summary>
/// <param name="inputStream">The stream from which to read the MTrk chunk.</param>
/// <returns>The MTrk chunk read.</returns>
public static MTrkChunkHeader Read(Stream inputStream)
{
// Validate input
if (inputStream == null)
{
throw new ArgumentNullException("inputStream");
}
if (!inputStream.CanRead)
{
throw new ArgumentException("Stream must be readable.", "inputStream");
}
// Read in a header from the stream and validate it
ChunkHeader header = ChunkHeader.Read(inputStream);
ValidateHeader(header);
// Read in the data (amount specified in the header)
byte [] data = new byte[header.Length];
if (inputStream.Read(data, 0, data.Length) != data.Length)
{
throw new InvalidOperationException("Not enough data in stream to read MTrk chunk.");
}
// Return the new chunk
return(new MTrkChunkHeader(data));
}
/// <summary>Read in an MThd chunk from the stream.</summary>
/// <param name="inputStream">The stream from which to read the MThd chunk.</param>
/// <returns>The MThd chunk read.</returns>
public static MThdChunkHeader Read(Stream inputStream)
{
// Validate input
if (inputStream == null)
{
throw new ArgumentNullException("inputStream");
}
if (!inputStream.CanRead)
{
throw new ArgumentException("Stream must be readable.", "inputStream");
}
// Read in a header from the stream and validate it
ChunkHeader header = ChunkHeader.Read(inputStream);
ValidateHeader(header);
// Read in the format
int format = 0;
for (int i = 0; i < 2; i++)
{
int val = inputStream.ReadByte();
if (val < 0)
{
throw new InvalidOperationException("The stream is invalid.");
}
format <<= 8;
format |= val;
}
// Read in the number of tracks
int numTracks = 0;
for (int i = 0; i < 2; i++)
{
int val = inputStream.ReadByte();
if (val < 0)
{
throw new InvalidOperationException("The stream is invalid.");
}
numTracks <<= 8;
numTracks |= val;
}
// Read in the division
int division = 0;
for (int i = 0; i < 2; i++)
{
int val = inputStream.ReadByte();
if (val < 0)
{
throw new InvalidOperationException("The stream is invalid.");
}
division <<= 8;
division |= val;
}
// Create a new MThd header and return it
return(new MThdChunkHeader(format, numTracks, division));
}
