/// <summary> Construct this tag from its constituant parts</summary>
/// <param name="signature">tag id
/// </param>
/// <param name="data">array of bytes
/// </param>
/// <param name="offset">to data in the data array
/// </param>
/// <param name="length">of data in the data array
/// </param>
protected internal ICCCurveType(int signature, byte[] data, int offset, int length) : base(signature, data, offset, offset + 2 * ICCProfile.int_size)
{
type = ICCProfile.getInt(data, offset);
reserved = ICCProfile.getInt(data, offset + ICCProfile.int_size);
nEntries = ICCProfile.getInt(data, offset + 2 * ICCProfile.int_size);
entry_Renamed_Field = new int[nEntries];
for (int i = 0; i < nEntries; ++i)
{
entry_Renamed_Field[i] = ICCProfile.getShort(data, offset + 3 * ICCProfile.int_size + i * ICCProfile.short_size) & 0xFFFF;
}
}
/// <summary>Analyze the box content. </summary>
internal void readBox()
{
byte[] bfr = new byte[14];
in_Renamed.seek(dataStart);
in_Renamed.readFully(bfr, 0, 14);
height = ICCProfile.getInt(bfr, 0);
width = ICCProfile.getInt(bfr, 4);
nc = ICCProfile.getShort(bfr, 8);
bpc = (short)(bfr[10] & 0x00ff);
c = (short)(bfr[11] & 0x00ff);
unk = bfr[12] == 0 ? true : false;
ipr = bfr[13] == 1 ? true : false;
}
/// <summary>Analyze the box content. </summary>
private void readBox()
{
byte[] bfr = new byte[8];
in_Renamed.seek(dataStart);
in_Renamed.readFully(bfr, 0, 2);
ndefs = ICCProfile.getShort(bfr, 0) & 0x0000ffff;
int offset = dataStart + 2;
in_Renamed.seek(offset);
for (int i = 0; i < ndefs; ++i)
{
in_Renamed.readFully(bfr, 0, 6);
int channel = ICCProfile.getShort(bfr, 0);
int[] channel_def = new int[3];
channel_def[0] = getCn(bfr);
channel_def[1] = getTyp(bfr);
channel_def[2] = getAsoc(bfr);
definitions[(System.Int32)channel_def[0]] = channel_def;
}
}
/// <summary>Return the associated channel from the record.</summary>
private int getAsoc(byte[] bfr)
{
return(ICCProfile.getShort(bfr, 4));
}
/// <summary>Return the channel type from the record.</summary>
private int getTyp(byte[] bfr)
{
return(ICCProfile.getShort(bfr, 2));
}
/// <summary>Return the channel from the record.</summary>
private int getCn(byte[] bfr)
{
return(ICCProfile.getShort(bfr, 0));
}
/// <summary>Analyze the box content. </summary>
internal void readBox()
{
byte[] bfr = new byte[4];
int i, j, b, m;
//int entry;
// Read the number of palette entries and columns per entry.
in_Renamed.seek((int)dataStart);
in_Renamed.readFully(bfr, 0, 3);
nentries = ICCProfile.getShort(bfr, 0) & 0x0000ffff;
ncolumns = bfr[2] & 0x0000ffff;
// Read the bitdepths for each column
bitdepth = new short[ncolumns];
bfr = new byte[ncolumns];
in_Renamed.readFully(bfr, 0, ncolumns);
for (i = 0; i < ncolumns; ++i)
{
bitdepth[i] = (short)(bfr[i] & 0x00fff);
}
entries = new int[nentries * ncolumns][];
bfr = new byte[2];
for (i = 0; i < nentries; ++i)
{
entries[i] = new int[ncolumns];
for (j = 0; j < ncolumns; ++j)
{
int bd = getBitDepth(j);
bool signed = isSigned(j);
switch (getEntrySize(j))
{
case 1: // 8 bit entries
in_Renamed.readFully(bfr, 0, 1);
b = bfr[0];
break;
case 2: // 16 bits
in_Renamed.readFully(bfr, 0, 2);
b = ICCProfile.getShort(bfr, 0);
break;
default:
throw new ColorSpaceException("palettes greater than 16 bits deep not supported");
}
if (signed)
{
// Do sign extension if high bit is set.
if ((b & (1 << (bd - 1))) == 0)
{
// high bit not set.
m = (1 << bd) - 1;
entries[i][j] = m & b;
}
else
{
// high bit set.
// CONVERSION PROBLEM?
m = unchecked ((int)(0xffffffff << bd));
entries[i][j] = m | b;
}
}
else
{
// Clear all high bits.
m = (1 << bd) - 1;
entries[i][j] = m & b;
}
}
}
}
/* Return the component mapped to the channel. */
public int getCMP(int channel)
{
byte[] mapping = (byte[])map[channel];
return(ICCProfile.getShort(mapping, 0) & 0x0000ffff);
}
private int getCMP(byte[] mapping)
{
return(ICCProfile.getShort(mapping, 0) & 0x0000ffff);
}
