public void Decode()
{
UsedIndexes = new List <int>();
_currentLine = 0;
_currentColumn = 0;
var bitStreamManager = new BitStreamManager(_imageData.Data);
_resultBitmap = new Bitmap(_width, _height);
//if (_pictureData.ImageData.Length == 0
// || (_pictureData.ImageData.Length == 1 && _pictureData.ImageData[0] == 0)) return; //Algumas imagens são vazias!!
/*
* Each line start with a 16le storing the size of the encoded line (without the size header itself) followed by the RLE data.
* lines
* encoded size : 16le
* line data : size bytes
*/
bool finishDecode = false;
while (!finishDecode)
{
uint lineSize = bitStreamManager.ReadUInt16();
int streamPosition = bitStreamManager.Position;
while ((bitStreamManager.Position - streamPosition) < (lineSize * 8))
{
bool repeatSameColor = bitStreamManager.ReadBit();
int count = bitStreamManager.ReadValue(7) + 1;
if (count > _width)
{
count = _width;
}
if (repeatSameColor)
{
byte colorIndex = bitStreamManager.ReadByte();
var color = GetColor(colorIndex);
for (int j = 0; j < count; j++)
{
DrawNextPixel(color);
}
}
else
{
for (int j = 0; j < count; j++)
{
byte colorIndex = bitStreamManager.ReadByte();
var color = GetColor(colorIndex);
DrawNextPixel(color);
}
}
if ((_currentColumn == 0 && _currentLine == _imageData.Height) || bitStreamManager.EndOfStream)
{
finishDecode = true;
}
}
}
UsedIndexes.Sort();
}