/***************** OpcodeTrimBounds ****************/
public OpcodeTrimBounds(TiffBinaryReader parameters, UInt32 param_max_bytes, ref Int32 bytes_used)
{
if (param_max_bytes < 16)
{
throw new RawDecoderException("Not enough data to read parameters, only " + param_max_bytes + " bytes left.");
}
mTop = parameters.ReadUInt16();
mLeft = parameters.ReadUInt16();
mBottom = parameters.ReadUInt16();
mRight = parameters.ReadUInt16();
bytes_used = 16;
}
/***************** OpcodeMapTable ****************/
public OpcodeMapTable(TiffBinaryReader parameters, ulong param_max_bytes, ref Int32 bytes_used, uint offset)
{
if (param_max_bytes < 36)
{
throw new RawDecoderException("Not enough data to read parameters, only " + param_max_bytes + " bytes left.");
}
uint h1 = parameters.ReadUInt32();
uint w1 = parameters.ReadUInt32();
uint h2 = parameters.ReadUInt32();
uint w2 = parameters.ReadUInt32();
aoi.SetAbsolute(w1, h1, w2, h2);
firstPlane = parameters.ReadUInt32();
planes = parameters.ReadUInt32();
rowPitch = parameters.ReadUInt32();
colPitch = parameters.ReadUInt32();
if (planes == 0)
{
throw new RawDecoderException("Zero planes");
}
if (rowPitch == 0 || colPitch == 0)
{
throw new RawDecoderException("Invalid Pitch");
}
int tablesize = (int)parameters.ReadUInt32();
bytes_used = 36;
if (tablesize <= 0)
{
throw new RawDecoderException("Table size must be positive");
}
if (tablesize > 65536)
{
throw new RawDecoderException("A map with more than 65536 entries not allowed");
}
if (param_max_bytes < 36 + ((UInt64)tablesize * 2))
{
throw new RawDecoderException("Not enough data to read parameters, only " + param_max_bytes + " bytes left.");
}
for (int i = 0; i <= 65535; i++)
{
int location = Math.Min(tablesize - 1, i);
parameters.BaseStream.Position = 36 + 2 * location + offset;
Lookup[i] = parameters.ReadUInt16();
}
bytes_used += tablesize * 2;
flags = (int)Flags.MultiThreaded | (int)Flags.PureLookup;
}
