/// <summary>
/// Convert MatFileType enumeration member to string representation
/// </summary>
/// <param name="type">MatFileType enumeration member</param>
/// <returns>String representing the Matlab's inner element type</returns>
/// <remarks>This function is obsolete. You may directly use the enumeration's functionality instead.</remarks>
public static String typeToString(MatFileType type)
{
String s;
switch (type)
{
case MatFileType.miUNKNOWN:
s = "unknown";
break;
case MatFileType.miINT8:
s = "int8";
break;
case MatFileType.miUINT8:
s = "uint8";
break;
case MatFileType.miINT16:
s = "int16";
break;
case MatFileType.miUINT16:
s = "uint16";
break;
case MatFileType.miINT32:
s = "int32";
break;
case MatFileType.miUINT32:
s = "uint32";
break;
case MatFileType.miSINGLE:
s = "single";
break;
case MatFileType.miDOUBLE:
s = "double";
break;
case MatFileType.miINT64:
s = "int64";
break;
case MatFileType.miUINT64:
s = "uint64";
break;
case MatFileType.miMATRIX:
s = "matrix";
break;
case MatFileType.miCOMPRESSED:
s = "compressed";
break;
case MatFileType.miUTF8:
s = "uft8";
break;
case MatFileType.miUTF16:
s = "utf16";
break;
case MatFileType.miUTF32:
s = "utf32";
break;
default:
s = "unknown";
break;
}
return s;
}
/// <summary>
/// read array of supported matlab data types
/// </summary>
/// <param name="br">binary reader, opened and correctly positioned</param>
/// <param name="storageType">actual storage type</param>
/// <param name="realData">output: on return, the array read</param>
/// <param name="len">input: number of bytes to read, on return: number of elements in array</param>
/// <param name="paddBytes">padding border, the stream will be read to the next border of length 'paddBytes'.</param>
private static void readElementGeneric(BinaryReader br, MatFileType storageType, out System.Array realData, ref Int32 len, int paddBytes) {
Int32 readInt = len;
switch (storageType) {
case MatFileType.miINT8:
realData = System.Array.CreateInstance(typeof(byte), readInt / sizeOf(storageType));
len = realData.Length;
realData = br.ReadBytes(len);
while (len % paddBytes != 0) {
br.ReadByte();
len++;
}
break;
case MatFileType.miUINT8:
realData = System.Array.CreateInstance(typeof(char), readInt / sizeOf(storageType));
len = realData.Length;
realData = br.ReadChars(len);
while (len % paddBytes != 0) {
br.ReadByte();
len++;
}
break;
case MatFileType.miINT16:
realData = System.Array.CreateInstance(typeof(short), readInt / sizeOf(storageType));
len = realData.Length;
for (int i = 0; i < len; i++) {
realData.SetValue(br.ReadInt16(), i);
}
while ((len * sizeOf(storageType) % paddBytes) != 0) {
len++;
br.ReadInt16();
}
break;
case MatFileType.miUINT16:
realData = System.Array.CreateInstance(typeof(UInt16), readInt / sizeOf(storageType));
len = realData.Length;
for (int i = 0; i < len; i++) {
realData.SetValue(br.ReadUInt16(), i);
}
while ((len * sizeOf(storageType) % paddBytes) != 0) {
len++;
br.ReadUInt16();
}
break;
case MatFileType.miINT32:
realData = System.Array.CreateInstance(typeof(Int32), readInt / sizeOf(storageType));
len = realData.Length;
for (int i = 0; i < len; i++) {
realData.SetValue(br.ReadInt32(), i);
}
while ((len * sizeOf(storageType) % paddBytes) != 0) {
len++;
br.ReadInt32();
}
break;
case MatFileType.miUINT32:
realData = System.Array.CreateInstance(typeof(UInt32), readInt / sizeOf(storageType));
len = realData.Length;
for (int i = 0; i < len; i++) {
realData.SetValue(br.ReadUInt32(), i);
}
while ((len * sizeOf(storageType) % paddBytes) != 0) {
len++;
br.ReadUInt32();
}
break;
case MatFileType.miSINGLE:
realData = System.Array.CreateInstance(typeof(float), readInt / sizeOf(storageType));
len = realData.Length;
for (int i = 0; i < len; i++) {
realData.SetValue(br.ReadSingle(), i);
}
while ((len * sizeOf(storageType) % paddBytes) != 0) {
len++;
br.ReadSingle();
}
break;
case MatFileType.miDOUBLE:
realData = System.Array.CreateInstance(typeof(double), readInt / sizeOf(storageType));
len = realData.Length;
for (int i = 0; i < len; i++) {
realData.SetValue(br.ReadDouble(), i);
}
while ((len * sizeOf(storageType) % paddBytes) != 0) {
len++;
br.ReadDouble();
}
break;
case MatFileType.miINT64:
realData = System.Array.CreateInstance(typeof(Int64), readInt / sizeOf(storageType));
len = realData.Length;
for (int i = 0; i < len; i++) {
realData.SetValue(br.ReadInt64(), i);
}
while ((len * sizeOf(storageType) % paddBytes) != 0) {
len++;
br.ReadInt64();
}
break;
case MatFileType.miUINT64:
realData = System.Array.CreateInstance(typeof(UInt64), readInt / sizeOf(storageType));
len = realData.Length;
for (int i = 0; i < len; i++) {
realData.SetValue(br.ReadUInt64(), i);
}
while ((len * sizeOf(storageType) % paddBytes) != 0) {
len++;
br.ReadInt64();
}
break;
case MatFileType.miMATRIX:
throw new NotSupportedException("matrix data type not expected as inner datatype!");
case MatFileType.miCOMPRESSED:
throw new NotSupportedException("Compressed matrix are not supported (yet)! ");
case MatFileType.miUTF8:
realData = System.Array.CreateInstance(typeof(UTF8Encoding), readInt / sizeOf(storageType));
len = realData.Length;
for (int i = 0; i < len; i++) {
realData.SetValue(br.ReadUInt16(), i);
}
while ((len * sizeOf(storageType) % paddBytes) != 0) {
len++;
br.ReadInt16();
}
break;
case MatFileType.miUTF16:
throw new NotSupportedException("UTF16 data type not supported (yet)!");
case MatFileType.miUTF32:
realData = System.Array.CreateInstance(typeof(UTF32Encoding), readInt / sizeOf(storageType));
len = realData.Length;
for (int i = 0; i < len; i++) {
realData.SetValue(br.ReadChars(2), i);
}
while ((len * sizeOf(storageType) % paddBytes) != 0) {
len++;
br.ReadChars(2);
}
break;
default:
throw new Exception("Unknown element data type found! Cancelling...");
}
}
/// <summary>
/// size of single elements stored in Matlab's *.mat files
/// </summary>
/// <param name="type">one of Matlab's inner element types</param>
/// <returns>size in bytes </returns>
private static int sizeOf(MatFileType type)
{
switch ( type )
{
case MatFileType.miINT8:
return miSIZE_INT8;
case MatFileType.miUINT8:
return miSIZE_UINT8;
case MatFileType.miINT16:
return miSIZE_INT16;
case MatFileType.miUINT16:
return miSIZE_UINT16;
case MatFileType.miINT32:
return miSIZE_INT32;
case MatFileType.miUINT32:
return miSIZE_UINT32;
case MatFileType.miDOUBLE:
return miSIZE_DOUBLE;
case MatFileType.miSINGLE:
return miSIZE_SINGLE;
case MatFileType.miUTF32:
return miSIZE_UTF32;
default:
return 1;
}
}
private static void readElementGeneric(BinaryReader br, MatFileType storageType, out System.Array realData, ref Int32 len) {
readElementGeneric (br,storageType,out realData, ref len, 8);
}